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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /third_party/python/PyYAML
parentInitial commit. (diff)
downloadfirefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz
firefox-26a029d407be480d791972afb5975cf62c9360a6.zip
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'third_party/python/PyYAML')
-rw-r--r--third_party/python/PyYAML/CHANGES271
-rw-r--r--third_party/python/PyYAML/LICENSE20
-rw-r--r--third_party/python/PyYAML/MANIFEST.in7
-rw-r--r--third_party/python/PyYAML/Makefile51
-rw-r--r--third_party/python/PyYAML/PKG-INFO46
-rw-r--r--third_party/python/PyYAML/README.md53
-rw-r--r--third_party/python/PyYAML/examples/pygments-lexer/example.yaml302
-rw-r--r--third_party/python/PyYAML/examples/pygments-lexer/yaml.py431
-rw-r--r--third_party/python/PyYAML/examples/yaml-highlight/yaml_hl.cfg115
-rwxr-xr-xthird_party/python/PyYAML/examples/yaml-highlight/yaml_hl.py114
-rw-r--r--third_party/python/PyYAML/lib/PyYAML.egg-info/PKG-INFO46
-rw-r--r--third_party/python/PyYAML/lib/PyYAML.egg-info/SOURCES.txt634
-rw-r--r--third_party/python/PyYAML/lib/PyYAML.egg-info/dependency_links.txt1
-rw-r--r--third_party/python/PyYAML/lib/PyYAML.egg-info/top_level.txt2
-rw-r--r--third_party/python/PyYAML/lib/_yaml/__init__.py33
-rw-r--r--third_party/python/PyYAML/lib/yaml/__init__.py390
-rw-r--r--third_party/python/PyYAML/lib/yaml/composer.py139
-rw-r--r--third_party/python/PyYAML/lib/yaml/constructor.py748
-rw-r--r--third_party/python/PyYAML/lib/yaml/cyaml.py101
-rw-r--r--third_party/python/PyYAML/lib/yaml/dumper.py62
-rw-r--r--third_party/python/PyYAML/lib/yaml/emitter.py1137
-rw-r--r--third_party/python/PyYAML/lib/yaml/error.py75
-rw-r--r--third_party/python/PyYAML/lib/yaml/events.py86
-rw-r--r--third_party/python/PyYAML/lib/yaml/loader.py63
-rw-r--r--third_party/python/PyYAML/lib/yaml/nodes.py49
-rw-r--r--third_party/python/PyYAML/lib/yaml/parser.py589
-rw-r--r--third_party/python/PyYAML/lib/yaml/reader.py185
-rw-r--r--third_party/python/PyYAML/lib/yaml/representer.py389
-rw-r--r--third_party/python/PyYAML/lib/yaml/resolver.py227
-rw-r--r--third_party/python/PyYAML/lib/yaml/scanner.py1435
-rw-r--r--third_party/python/PyYAML/lib/yaml/serializer.py111
-rw-r--r--third_party/python/PyYAML/lib/yaml/tokens.py104
-rw-r--r--third_party/python/PyYAML/pyproject.toml3
-rw-r--r--third_party/python/PyYAML/setup.cfg4
-rw-r--r--third_party/python/PyYAML/setup.py314
-rw-r--r--third_party/python/PyYAML/yaml/__init__.pxd0
-rw-r--r--third_party/python/PyYAML/yaml/_yaml.h13
-rw-r--r--third_party/python/PyYAML/yaml/_yaml.pxd258
-rw-r--r--third_party/python/PyYAML/yaml/_yaml.pyx1396
39 files changed, 10004 insertions, 0 deletions
diff --git a/third_party/python/PyYAML/CHANGES b/third_party/python/PyYAML/CHANGES
new file mode 100644
index 0000000000..27e11bfaf7
--- /dev/null
+++ b/third_party/python/PyYAML/CHANGES
@@ -0,0 +1,271 @@
+
+For a complete changelog, see:
+
+* https://github.com/yaml/pyyaml/commits/
+* https://bitbucket.org/xi/pyyaml/commits/
+
+6.0.1 (2023-07-18)
+
+* https://github.com/yaml/pyyaml/pull/702 -- pin Cython build dep to < 3.0
+
+6.0 (2021-10-13)
+
+* https://github.com/yaml/pyyaml/pull/327 -- Change README format to Markdown
+* https://github.com/yaml/pyyaml/pull/483 -- Add a test for YAML 1.1 types
+* https://github.com/yaml/pyyaml/pull/497 -- fix float resolver to ignore `.` and `._`
+* https://github.com/yaml/pyyaml/pull/550 -- drop Python 2.7
+* https://github.com/yaml/pyyaml/pull/553 -- Fix spelling of “hexadecimal”
+* https://github.com/yaml/pyyaml/pull/556 -- fix representation of Enum subclasses
+* https://github.com/yaml/pyyaml/pull/557 -- fix libyaml extension compiler warnings
+* https://github.com/yaml/pyyaml/pull/560 -- fix ResourceWarning on leaked file descriptors
+* https://github.com/yaml/pyyaml/pull/561 -- always require `Loader` arg to `yaml.load()`
+* https://github.com/yaml/pyyaml/pull/564 -- remove remaining direct distutils usage
+
+5.4.1 (2021-01-20)
+
+* https://github.com/yaml/pyyaml/pull/480 -- Fix stub compat with older pyyaml versions that may unwittingly load it
+
+5.4 (2021-01-19)
+
+* https://github.com/yaml/pyyaml/pull/407 -- Build modernization, remove distutils, fix metadata, build wheels, CI to GHA
+* https://github.com/yaml/pyyaml/pull/472 -- Fix for CVE-2020-14343, moves arbitrary python tags to UnsafeLoader
+* https://github.com/yaml/pyyaml/pull/441 -- Fix memory leak in implicit resolver setup
+* https://github.com/yaml/pyyaml/pull/392 -- Fix py2 copy support for timezone objects
+* https://github.com/yaml/pyyaml/pull/378 -- Fix compatibility with Jython
+
+5.3.1 (2020-03-18)
+
+* https://github.com/yaml/pyyaml/pull/386 -- Prevents arbitrary code execution during python/object/new constructor
+
+5.3 (2020-01-06)
+
+* https://github.com/yaml/pyyaml/pull/290 -- Use `is` instead of equality for comparing with `None`
+* https://github.com/yaml/pyyaml/pull/270 -- Fix typos and stylistic nit
+* https://github.com/yaml/pyyaml/pull/309 -- Fix up small typo
+* https://github.com/yaml/pyyaml/pull/161 -- Fix handling of __slots__
+* https://github.com/yaml/pyyaml/pull/358 -- Allow calling add_multi_constructor with None
+* https://github.com/yaml/pyyaml/pull/285 -- Add use of safe_load() function in README
+* https://github.com/yaml/pyyaml/pull/351 -- Fix reader for Unicode code points over 0xFFFF
+* https://github.com/yaml/pyyaml/pull/360 -- Enable certain unicode tests when maxunicode not > 0xffff
+* https://github.com/yaml/pyyaml/pull/359 -- Use full_load in yaml-highlight example
+* https://github.com/yaml/pyyaml/pull/244 -- Document that PyYAML is implemented with Cython
+* https://github.com/yaml/pyyaml/pull/329 -- Fix for Python 3.10
+* https://github.com/yaml/pyyaml/pull/310 -- Increase size of index, line, and column fields
+* https://github.com/yaml/pyyaml/pull/260 -- Remove some unused imports
+* https://github.com/yaml/pyyaml/pull/163 -- Create timezone-aware datetimes when parsed as such
+* https://github.com/yaml/pyyaml/pull/363 -- Add tests for timezone
+
+5.2 (2019-12-02)
+------------------
+
+* Repair incompatibilities introduced with 5.1. The default Loader was changed,
+ but several methods like add_constructor still used the old default
+ https://github.com/yaml/pyyaml/pull/279 -- A more flexible fix for custom tag constructors
+ https://github.com/yaml/pyyaml/pull/287 -- Change default loader for yaml.add_constructor
+ https://github.com/yaml/pyyaml/pull/305 -- Change default loader for add_implicit_resolver, add_path_resolver
+* Make FullLoader safer by removing python/object/apply from the default FullLoader
+ https://github.com/yaml/pyyaml/pull/347 -- Move constructor for object/apply to UnsafeConstructor
+* Fix bug introduced in 5.1 where quoting went wrong on systems with sys.maxunicode <= 0xffff
+ https://github.com/yaml/pyyaml/pull/276 -- Fix logic for quoting special characters
+* Other PRs:
+ https://github.com/yaml/pyyaml/pull/280 -- Update CHANGES for 5.1
+
+5.1.2 (2019-07-30)
+------------------
+
+* Re-release of 5.1 with regenerated Cython sources to build properly for Python 3.8b2+
+
+5.1.1 (2019-06-05)
+------------------
+
+* Re-release of 5.1 with regenerated Cython sources to build properly for Python 3.8b1
+
+5.1 (2019-03-13)
+----------------
+
+* https://github.com/yaml/pyyaml/pull/35 -- Some modernization of the test running
+* https://github.com/yaml/pyyaml/pull/42 -- Install tox in a virtualenv
+* https://github.com/yaml/pyyaml/pull/45 -- Allow colon in a plain scalar in a flow context
+* https://github.com/yaml/pyyaml/pull/48 -- Fix typos
+* https://github.com/yaml/pyyaml/pull/55 -- Improve RepresenterError creation
+* https://github.com/yaml/pyyaml/pull/59 -- Resolves #57, update readme issues link
+* https://github.com/yaml/pyyaml/pull/60 -- Document and test Python 3.6 support
+* https://github.com/yaml/pyyaml/pull/61 -- Use Travis CI built in pip cache support
+* https://github.com/yaml/pyyaml/pull/62 -- Remove tox workaround for Travis CI
+* https://github.com/yaml/pyyaml/pull/63 -- Adding support to Unicode characters over codepoint 0xffff
+* https://github.com/yaml/pyyaml/pull/75 -- add 3.12 changelog
+* https://github.com/yaml/pyyaml/pull/76 -- Fallback to Pure Python if Compilation fails
+* https://github.com/yaml/pyyaml/pull/84 -- Drop unsupported Python 3.3
+* https://github.com/yaml/pyyaml/pull/102 -- Include license file in the generated wheel package
+* https://github.com/yaml/pyyaml/pull/105 -- Removed Python 2.6 & 3.3 support
+* https://github.com/yaml/pyyaml/pull/111 -- Remove commented out Psyco code
+* https://github.com/yaml/pyyaml/pull/129 -- Remove call to `ord` in lib3 emitter code
+* https://github.com/yaml/pyyaml/pull/149 -- Test on Python 3.7-dev
+* https://github.com/yaml/pyyaml/pull/158 -- Support escaped slash in double quotes "\/"
+* https://github.com/yaml/pyyaml/pull/175 -- Updated link to pypi in release announcement
+* https://github.com/yaml/pyyaml/pull/181 -- Import Hashable from collections.abc
+* https://github.com/yaml/pyyaml/pull/194 -- Reverting https://github.com/yaml/pyyaml/pull/74
+* https://github.com/yaml/pyyaml/pull/195 -- Build libyaml on travis
+* https://github.com/yaml/pyyaml/pull/196 -- Force cython when building sdist
+* https://github.com/yaml/pyyaml/pull/254 -- Allow to turn off sorting keys in Dumper (2)
+* https://github.com/yaml/pyyaml/pull/256 -- Make default_flow_style=False
+* https://github.com/yaml/pyyaml/pull/257 -- Deprecate yaml.load and add FullLoader and UnsafeLoader classes
+* https://github.com/yaml/pyyaml/pull/261 -- Skip certain unicode tests when maxunicode not > 0xffff
+* https://github.com/yaml/pyyaml/pull/263 -- Windows Appveyor build
+
+3.13 (2018-07-05)
+-----------------
+
+* Resolved issues around PyYAML working in Python 3.7.
+
+3.12 (2016-08-28)
+-----------------
+
+* Wheel packages for Windows binaries.
+* Adding an implicit resolver to a derived loader should not affect the base loader.
+* Uniform representation for OrderedDict? across different versions of Python.
+* Fixed comparison to None warning.
+
+3.11 (2014-03-26)
+-----------------
+
+* Source and binary distributions are rebuilt against the latest
+ versions of Cython and LibYAML.
+
+3.10 (2011-05-30)
+-----------------
+
+* Do not try to build LibYAML bindings on platforms other than CPython
+ (Thank to olt(at)bogosoft(dot)com).
+* Clear cyclic references in the parser and the emitter
+ (Thank to kristjan(at)ccpgames(dot)com).
+* Dropped support for Python 2.3 and 2.4.
+
+3.09 (2009-08-31)
+-----------------
+
+* Fixed an obscure scanner error not reported when there is
+ no line break at the end of the stream (Thank to Ingy).
+* Fixed use of uninitialized memory when emitting anchors with
+ LibYAML bindings (Thank to cegner(at)yahoo-inc(dot)com).
+* Fixed emitting incorrect BOM characters for UTF-16 (Thank to
+ Valentin Nechayev)
+* Fixed the emitter for folded scalars not respecting the preferred
+ line width (Thank to Ingy).
+* Fixed a subtle ordering issue with emitting '%TAG' directives
+ (Thank to Andrey Somov).
+* Fixed performance regression with LibYAML bindings.
+
+
+3.08 (2008-12-31)
+-----------------
+
+* Python 3 support (Thank to Erick Tryzelaar).
+* Use Cython instead of Pyrex to build LibYAML bindings.
+* Refactored support for unicode and byte input/output streams.
+
+
+3.07 (2008-12-29)
+-----------------
+
+* The emitter learned to use an optional indentation indicator
+ for block scalar; thus scalars with leading whitespaces
+ could now be represented in a literal or folded style.
+* The test suite is now included in the source distribution.
+ To run the tests, type 'python setup.py test'.
+* Refactored the test suite: dropped unittest in favor of
+ a custom test appliance.
+* Fixed the path resolver in CDumper.
+* Forced an explicit document end indicator when there is
+ a possibility of parsing ambiguity.
+* More setup.py improvements: the package should be usable
+ when any combination of setuptools, Pyrex and LibYAML
+ is installed.
+* Windows binary packages are built against LibYAML-0.1.2.
+* Minor typos and corrections (Thank to Ingy dot Net
+ and Andrey Somov).
+
+
+3.06 (2008-10-03)
+-----------------
+
+* setup.py checks whether LibYAML is installed and if so, builds
+ and installs LibYAML bindings. To force or disable installation
+ of LibYAML bindings, use '--with-libyaml' or '--without-libyaml'
+ respectively.
+* The source distribution includes compiled Pyrex sources so
+ building LibYAML bindings no longer requires Pyrex installed.
+* 'yaml.load()' raises an exception if the input stream contains
+ more than one YAML document.
+* Fixed exceptions produced by LibYAML bindings.
+* Fixed a dot '.' character being recognized as !!float.
+* Fixed Python 2.3 compatibility issue in constructing !!timestamp values.
+* Windows binary packages are built against the LibYAML stable branch.
+* Added attributes 'yaml.__version__' and 'yaml.__with_libyaml__'.
+
+
+3.05 (2007-05-13)
+-----------------
+
+* Windows binary packages were built with LibYAML trunk.
+* Fixed a bug that prevent processing a live stream of YAML documents in
+ timely manner (Thanks edward(at)sweetbytes(dot)net).
+* Fixed a bug when the path in add_path_resolver contains boolean values
+ (Thanks jstroud(at)mbi(dot)ucla(dot)edu).
+* Fixed loss of microsecond precision in timestamps
+ (Thanks edemaine(at)mit(dot)edu).
+* Fixed loading an empty YAML stream.
+* Allowed immutable subclasses of YAMLObject.
+* Made the encoding of the unicode->str conversion explicit so that
+ the conversion does not depend on the default Python encoding.
+* Forced emitting float values in a YAML compatible form.
+
+
+3.04 (2006-08-20)
+-----------------
+
+* Include experimental LibYAML bindings.
+* Fully support recursive structures.
+* Sort dictionary keys. Mapping node values are now represented
+ as lists of pairs instead of dictionaries. No longer check
+ for duplicate mapping keys as it didn't work correctly anyway.
+* Fix invalid output of single-quoted scalars in cases when a single
+ quote is not escaped when preceded by whitespaces or line breaks.
+* To make porting easier, rewrite Parser not using generators.
+* Fix handling of unexpected block mapping values.
+* Fix a bug in Representer.represent_object: copy_reg.dispatch_table
+ was not correctly handled.
+* Fix a bug when a block scalar is incorrectly emitted in the simple
+ key context.
+* Hold references to the objects being represented.
+* Make Representer not try to guess !!pairs when a list is represented.
+* Fix timestamp constructing and representing.
+* Fix the 'N' plain scalar being incorrectly recognized as !!bool.
+
+
+3.03 (2006-06-19)
+-----------------
+
+* Fix Python 2.5 compatibility issues.
+* Fix numerous bugs in the float handling.
+* Fix scanning some ill-formed documents.
+* Other minor fixes.
+
+
+3.02 (2006-05-15)
+-----------------
+
+* Fix win32 installer. Apparently bdist_wininst does not work well
+ under Linux.
+* Fix a bug in add_path_resolver.
+* Add the yaml-highlight example. Try to run on a color terminal:
+ `python yaml_hl.py <any_document.yaml`.
+
+
+3.01 (2006-05-07)
+-----------------
+
+* Initial release. The version number reflects the codename
+ of the project (PyYAML 3000) and differentiates it from
+ the abandoned PyYaml module.
+
diff --git a/third_party/python/PyYAML/LICENSE b/third_party/python/PyYAML/LICENSE
new file mode 100644
index 0000000000..2f1b8e15e5
--- /dev/null
+++ b/third_party/python/PyYAML/LICENSE
@@ -0,0 +1,20 @@
+Copyright (c) 2017-2021 Ingy döt Net
+Copyright (c) 2006-2016 Kirill Simonov
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/third_party/python/PyYAML/MANIFEST.in b/third_party/python/PyYAML/MANIFEST.in
new file mode 100644
index 0000000000..3ab0c4f460
--- /dev/null
+++ b/third_party/python/PyYAML/MANIFEST.in
@@ -0,0 +1,7 @@
+include CHANGES README LICENSE Makefile pyproject.toml setup.py
+recursive-include lib/yaml *.py
+recursive-include lib/_yaml *.py
+recursive-include examples *.py *.cfg *.yaml
+recursive-include tests/data *
+recursive-include tests/lib *.py
+recursive-include yaml *
diff --git a/third_party/python/PyYAML/Makefile b/third_party/python/PyYAML/Makefile
new file mode 100644
index 0000000000..34a1d40110
--- /dev/null
+++ b/third_party/python/PyYAML/Makefile
@@ -0,0 +1,51 @@
+
+.PHONY: build dist
+
+PYTHON=/usr/bin/python3
+TEST=
+PARAMETERS=
+
+build:
+ ${PYTHON} setup.py build ${PARAMETERS}
+
+buildext:
+ ${PYTHON} setup.py --with-libyaml build ${PARAMETERS}
+
+force:
+ ${PYTHON} setup.py build -f ${PARAMETERS}
+
+forceext:
+ ${PYTHON} setup.py --with-libyaml build -f ${PARAMETERS}
+
+install:
+ ${PYTHON} setup.py install ${PARAMETERS}
+
+installext:
+ ${PYTHON} setup.py --with-libyaml install ${PARAMETERS}
+
+test: build
+ ${PYTHON} tests/lib/test_build.py ${TEST}
+
+testext: buildext
+ ${PYTHON} tests/lib/test_build_ext.py ${TEST}
+
+testall:
+ ${PYTHON} setup.py test
+
+dist:
+ @# No longer uploading a zip file to pypi
+ @# ${PYTHON} setup.py --with-libyaml sdist --formats=zip,gztar
+ ${PYTHON} setup.py --with-libyaml sdist --formats=gztar
+
+windist:
+ ${PYTHON} setup.py --with-libyaml bdist_wininst
+
+clean:
+ ${PYTHON} setup.py --with-libyaml clean -a
+ rm -fr \
+ dist/ \
+ lib/PyYAML.egg-info/ \
+ lib/yaml/__pycache__/ \
+ tests/lib/__pycache__/ \
+ yaml/_yaml.c \
+
diff --git a/third_party/python/PyYAML/PKG-INFO b/third_party/python/PyYAML/PKG-INFO
new file mode 100644
index 0000000000..c8905983e3
--- /dev/null
+++ b/third_party/python/PyYAML/PKG-INFO
@@ -0,0 +1,46 @@
+Metadata-Version: 2.1
+Name: PyYAML
+Version: 6.0.1
+Summary: YAML parser and emitter for Python
+Home-page: https://pyyaml.org/
+Download-URL: https://pypi.org/project/PyYAML/
+Author: Kirill Simonov
+Author-email: xi@resolvent.net
+License: MIT
+Project-URL: Bug Tracker, https://github.com/yaml/pyyaml/issues
+Project-URL: CI, https://github.com/yaml/pyyaml/actions
+Project-URL: Documentation, https://pyyaml.org/wiki/PyYAMLDocumentation
+Project-URL: Mailing lists, http://lists.sourceforge.net/lists/listinfo/yaml-core
+Project-URL: Source Code, https://github.com/yaml/pyyaml
+Platform: Any
+Classifier: Development Status :: 5 - Production/Stable
+Classifier: Intended Audience :: Developers
+Classifier: License :: OSI Approved :: MIT License
+Classifier: Operating System :: OS Independent
+Classifier: Programming Language :: Cython
+Classifier: Programming Language :: Python
+Classifier: Programming Language :: Python :: 3
+Classifier: Programming Language :: Python :: 3.6
+Classifier: Programming Language :: Python :: 3.7
+Classifier: Programming Language :: Python :: 3.8
+Classifier: Programming Language :: Python :: 3.9
+Classifier: Programming Language :: Python :: 3.10
+Classifier: Programming Language :: Python :: 3.11
+Classifier: Programming Language :: Python :: Implementation :: CPython
+Classifier: Programming Language :: Python :: Implementation :: PyPy
+Classifier: Topic :: Software Development :: Libraries :: Python Modules
+Classifier: Topic :: Text Processing :: Markup
+Requires-Python: >=3.6
+License-File: LICENSE
+
+YAML is a data serialization format designed for human readability
+and interaction with scripting languages. PyYAML is a YAML parser
+and emitter for Python.
+
+PyYAML features a complete YAML 1.1 parser, Unicode support, pickle
+support, capable extension API, and sensible error messages. PyYAML
+supports standard YAML tags and provides Python-specific tags that
+allow to represent an arbitrary Python object.
+
+PyYAML is applicable for a broad range of tasks from complex
+configuration files to object serialization and persistence.
diff --git a/third_party/python/PyYAML/README.md b/third_party/python/PyYAML/README.md
new file mode 100644
index 0000000000..7d01da248f
--- /dev/null
+++ b/third_party/python/PyYAML/README.md
@@ -0,0 +1,53 @@
+PyYAML
+======
+
+A full-featured YAML processing framework for Python
+
+## Installation
+
+To install, type `python setup.py install`.
+
+By default, the `setup.py` script checks whether LibYAML is installed and if
+so, builds and installs LibYAML bindings.
+To skip the check and force installation of LibYAML bindings, use the option
+`--with-libyaml`: `python setup.py --with-libyaml install`.
+To disable the check and skip building and installing LibYAML bindings, use
+`--without-libyaml`: `python setup.py --without-libyaml install`.
+
+When LibYAML bindings are installed, you may use fast LibYAML-based parser and
+emitter as follows:
+
+ >>> yaml.load(stream, Loader=yaml.CLoader)
+ >>> yaml.dump(data, Dumper=yaml.CDumper)
+
+If you don't trust the input YAML stream, you should use:
+
+ >>> yaml.safe_load(stream)
+
+## Testing
+
+PyYAML includes a comprehensive test suite.
+To run the tests, type `python setup.py test`.
+
+## Further Information
+
+* For more information, check the
+ [PyYAML homepage](https://github.com/yaml/pyyaml).
+
+* [PyYAML tutorial and reference](http://pyyaml.org/wiki/PyYAMLDocumentation).
+
+* Discuss PyYAML with the maintainers on
+ Matrix at https://matrix.to/#/#pyyaml:yaml.io or
+ IRC #pyyaml irc.libera.chat
+
+* Submit bug reports and feature requests to the
+ [PyYAML bug tracker](https://github.com/yaml/pyyaml/issues).
+
+## License
+
+The PyYAML module was written by Kirill Simonov <xi@resolvent.net>.
+It is currently maintained by the YAML and Python communities.
+
+PyYAML is released under the MIT license.
+
+See the file LICENSE for more details.
diff --git a/third_party/python/PyYAML/examples/pygments-lexer/example.yaml b/third_party/python/PyYAML/examples/pygments-lexer/example.yaml
new file mode 100644
index 0000000000..9c0ed9d082
--- /dev/null
+++ b/third_party/python/PyYAML/examples/pygments-lexer/example.yaml
@@ -0,0 +1,302 @@
+
+#
+# Examples from the Preview section of the YAML specification
+# (http://yaml.org/spec/1.2/#Preview)
+#
+
+# Sequence of scalars
+---
+- Mark McGwire
+- Sammy Sosa
+- Ken Griffey
+
+# Mapping scalars to scalars
+---
+hr: 65 # Home runs
+avg: 0.278 # Batting average
+rbi: 147 # Runs Batted In
+
+# Mapping scalars to sequences
+---
+american:
+ - Boston Red Sox
+ - Detroit Tigers
+ - New York Yankees
+national:
+ - New York Mets
+ - Chicago Cubs
+ - Atlanta Braves
+
+# Sequence of mappings
+---
+-
+ name: Mark McGwire
+ hr: 65
+ avg: 0.278
+-
+ name: Sammy Sosa
+ hr: 63
+ avg: 0.288
+
+# Sequence of sequences
+---
+- [name , hr, avg ]
+- [Mark McGwire, 65, 0.278]
+- [Sammy Sosa , 63, 0.288]
+
+# Mapping of mappings
+---
+Mark McGwire: {hr: 65, avg: 0.278}
+Sammy Sosa: {
+ hr: 63,
+ avg: 0.288
+ }
+
+# Two documents in a stream
+--- # Ranking of 1998 home runs
+- Mark McGwire
+- Sammy Sosa
+- Ken Griffey
+--- # Team ranking
+- Chicago Cubs
+- St Louis Cardinals
+
+# Documents with the end indicator
+---
+time: 20:03:20
+player: Sammy Sosa
+action: strike (miss)
+...
+---
+time: 20:03:47
+player: Sammy Sosa
+action: grand slam
+...
+
+# Comments
+---
+hr: # 1998 hr ranking
+ - Mark McGwire
+ - Sammy Sosa
+rbi:
+ # 1998 rbi ranking
+ - Sammy Sosa
+ - Ken Griffey
+
+# Anchors and aliases
+---
+hr:
+ - Mark McGwire
+ # Following node labeled SS
+ - &SS Sammy Sosa
+rbi:
+ - *SS # Subsequent occurrence
+ - Ken Griffey
+
+# Mapping between sequences
+---
+? - Detroit Tigers
+ - Chicago cubs
+:
+ - 2001-07-23
+? [ New York Yankees,
+ Atlanta Braves ]
+: [ 2001-07-02, 2001-08-12,
+ 2001-08-14 ]
+
+# Inline nested mapping
+---
+# products purchased
+- item : Super Hoop
+ quantity: 1
+- item : Basketball
+ quantity: 4
+- item : Big Shoes
+ quantity: 1
+
+# Literal scalars
+--- | # ASCII art
+ \//||\/||
+ // || ||__
+
+# Folded scalars
+--- >
+ Mark McGwire's
+ year was crippled
+ by a knee injury.
+
+# Preserved indented block in a folded scalar
+---
+>
+ Sammy Sosa completed another
+ fine season with great stats.
+
+ 63 Home Runs
+ 0.288 Batting Average
+
+ What a year!
+
+# Indentation determines scope
+---
+name: Mark McGwire
+accomplishment: >
+ Mark set a major league
+ home run record in 1998.
+stats: |
+ 65 Home Runs
+ 0.278 Batting Average
+
+# Quoted scalars
+---
+unicode: "Sosa did fine.\u263A"
+control: "\b1998\t1999\t2000\n"
+hex esc: "\x0d\x0a is \r\n"
+single: '"Howdy!" he cried.'
+quoted: ' # not a ''comment''.'
+tie-fighter: '|\-*-/|'
+
+# Multi-line flow scalars
+---
+plain:
+ This unquoted scalar
+ spans many lines.
+quoted: "So does this
+ quoted scalar.\n"
+
+# Integers
+---
+canonical: 12345
+decimal: +12_345
+sexagesimal: 3:25:45
+octal: 014
+hexadecimal: 0xC
+
+# Floating point
+---
+canonical: 1.23015e+3
+exponential: 12.3015e+02
+sexagesimal: 20:30.15
+fixed: 1_230.15
+negative infinity: -.inf
+not a number: .NaN
+
+# Miscellaneous
+---
+null: ~
+true: boolean
+false: boolean
+string: '12345'
+
+# Timestamps
+---
+canonical: 2001-12-15T02:59:43.1Z
+iso8601: 2001-12-14t21:59:43.10-05:00
+spaced: 2001-12-14 21:59:43.10 -5
+date: 2002-12-14
+
+# Various explicit tags
+---
+not-date: !!str 2002-04-28
+picture: !!binary |
+ R0lGODlhDAAMAIQAAP//9/X
+ 17unp5WZmZgAAAOfn515eXv
+ Pz7Y6OjuDg4J+fn5OTk6enp
+ 56enmleECcgggoBADs=
+application specific tag: !something |
+ The semantics of the tag
+ above may be different for
+ different documents.
+
+# Global tags
+%TAG ! tag:clarkevans.com,2002:
+--- !shape
+ # Use the ! handle for presenting
+ # tag:clarkevans.com,2002:circle
+- !circle
+ center: &ORIGIN {x: 73, y: 129}
+ radius: 7
+- !line
+ start: *ORIGIN
+ finish: { x: 89, y: 102 }
+- !label
+ start: *ORIGIN
+ color: 0xFFEEBB
+ text: Pretty vector drawing.
+
+# Unordered sets
+--- !!set
+# sets are represented as a
+# mapping where each key is
+# associated with the empty string
+? Mark McGwire
+? Sammy Sosa
+? Ken Griff
+
+# Ordered mappings
+--- !!omap
+# ordered maps are represented as
+# a sequence of mappings, with
+# each mapping having one key
+- Mark McGwire: 65
+- Sammy Sosa: 63
+- Ken Griffy: 58
+
+# Full length example
+--- !<tag:clarkevans.com,2002:invoice>
+invoice: 34843
+date : 2001-01-23
+bill-to: &id001
+ given : Chris
+ family : Dumars
+ address:
+ lines: |
+ 458 Walkman Dr.
+ Suite #292
+ city : Royal Oak
+ state : MI
+ postal : 48046
+ship-to: *id001
+product:
+ - sku : BL394D
+ quantity : 4
+ description : Basketball
+ price : 450.00
+ - sku : BL4438H
+ quantity : 1
+ description : Super Hoop
+ price : 2392.00
+tax : 251.42
+total: 4443.52
+comments:
+ Late afternoon is best.
+ Backup contact is Nancy
+ Billsmer @ 338-4338.
+
+# Another full-length example
+---
+Time: 2001-11-23 15:01:42 -5
+User: ed
+Warning:
+ This is an error message
+ for the log file
+---
+Time: 2001-11-23 15:02:31 -5
+User: ed
+Warning:
+ A slightly different error
+ message.
+---
+Date: 2001-11-23 15:03:17 -5
+User: ed
+Fatal:
+ Unknown variable "bar"
+Stack:
+ - file: TopClass.py
+ line: 23
+ code: |
+ x = MoreObject("345\n")
+ - file: MoreClass.py
+ line: 58
+ code: |-
+ foo = bar
+
diff --git a/third_party/python/PyYAML/examples/pygments-lexer/yaml.py b/third_party/python/PyYAML/examples/pygments-lexer/yaml.py
new file mode 100644
index 0000000000..1a1bbdeb3a
--- /dev/null
+++ b/third_party/python/PyYAML/examples/pygments-lexer/yaml.py
@@ -0,0 +1,431 @@
+
+"""
+yaml.py
+
+Lexer for YAML, a human-friendly data serialization language
+(http://yaml.org/).
+
+Written by Kirill Simonov <xi@resolvent.net>.
+
+License: Whatever suitable for inclusion into the Pygments package.
+"""
+
+from pygments.lexer import \
+ ExtendedRegexLexer, LexerContext, include, bygroups
+from pygments.token import \
+ Text, Comment, Punctuation, Name, Literal
+
+__all__ = ['YAMLLexer']
+
+
+class YAMLLexerContext(LexerContext):
+ """Indentation context for the YAML lexer."""
+
+ def __init__(self, *args, **kwds):
+ super(YAMLLexerContext, self).__init__(*args, **kwds)
+ self.indent_stack = []
+ self.indent = -1
+ self.next_indent = 0
+ self.block_scalar_indent = None
+
+
+def something(TokenClass):
+ """Do not produce empty tokens."""
+ def callback(lexer, match, context):
+ text = match.group()
+ if not text:
+ return
+ yield match.start(), TokenClass, text
+ context.pos = match.end()
+ return callback
+
+def reset_indent(TokenClass):
+ """Reset the indentation levels."""
+ def callback(lexer, match, context):
+ text = match.group()
+ context.indent_stack = []
+ context.indent = -1
+ context.next_indent = 0
+ context.block_scalar_indent = None
+ yield match.start(), TokenClass, text
+ context.pos = match.end()
+ return callback
+
+def save_indent(TokenClass, start=False):
+ """Save a possible indentation level."""
+ def callback(lexer, match, context):
+ text = match.group()
+ extra = ''
+ if start:
+ context.next_indent = len(text)
+ if context.next_indent < context.indent:
+ while context.next_indent < context.indent:
+ context.indent = context.indent_stack.pop()
+ if context.next_indent > context.indent:
+ extra = text[context.indent:]
+ text = text[:context.indent]
+ else:
+ context.next_indent += len(text)
+ if text:
+ yield match.start(), TokenClass, text
+ if extra:
+ yield match.start()+len(text), TokenClass.Error, extra
+ context.pos = match.end()
+ return callback
+
+def set_indent(TokenClass, implicit=False):
+ """Set the previously saved indentation level."""
+ def callback(lexer, match, context):
+ text = match.group()
+ if context.indent < context.next_indent:
+ context.indent_stack.append(context.indent)
+ context.indent = context.next_indent
+ if not implicit:
+ context.next_indent += len(text)
+ yield match.start(), TokenClass, text
+ context.pos = match.end()
+ return callback
+
+def set_block_scalar_indent(TokenClass):
+ """Set an explicit indentation level for a block scalar."""
+ def callback(lexer, match, context):
+ text = match.group()
+ context.block_scalar_indent = None
+ if not text:
+ return
+ increment = match.group(1)
+ if increment:
+ current_indent = max(context.indent, 0)
+ increment = int(increment)
+ context.block_scalar_indent = current_indent + increment
+ if text:
+ yield match.start(), TokenClass, text
+ context.pos = match.end()
+ return callback
+
+def parse_block_scalar_empty_line(IndentTokenClass, ContentTokenClass):
+ """Process an empty line in a block scalar."""
+ def callback(lexer, match, context):
+ text = match.group()
+ if (context.block_scalar_indent is None or
+ len(text) <= context.block_scalar_indent):
+ if text:
+ yield match.start(), IndentTokenClass, text
+ else:
+ indentation = text[:context.block_scalar_indent]
+ content = text[context.block_scalar_indent:]
+ yield match.start(), IndentTokenClass, indentation
+ yield (match.start()+context.block_scalar_indent,
+ ContentTokenClass, content)
+ context.pos = match.end()
+ return callback
+
+def parse_block_scalar_indent(TokenClass):
+ """Process indentation spaces in a block scalar."""
+ def callback(lexer, match, context):
+ text = match.group()
+ if context.block_scalar_indent is None:
+ if len(text) <= max(context.indent, 0):
+ context.stack.pop()
+ context.stack.pop()
+ return
+ context.block_scalar_indent = len(text)
+ else:
+ if len(text) < context.block_scalar_indent:
+ context.stack.pop()
+ context.stack.pop()
+ return
+ if text:
+ yield match.start(), TokenClass, text
+ context.pos = match.end()
+ return callback
+
+def parse_plain_scalar_indent(TokenClass):
+ """Process indentation spaces in a plain scalar."""
+ def callback(lexer, match, context):
+ text = match.group()
+ if len(text) <= context.indent:
+ context.stack.pop()
+ context.stack.pop()
+ return
+ if text:
+ yield match.start(), TokenClass, text
+ context.pos = match.end()
+ return callback
+
+
+class YAMLLexer(ExtendedRegexLexer):
+ """Lexer for the YAML language."""
+
+ name = 'YAML'
+ aliases = ['yaml']
+ filenames = ['*.yaml', '*.yml']
+ mimetypes = ['text/x-yaml']
+
+ tokens = {
+
+ # the root rules
+ 'root': [
+ # ignored whitespaces
+ (r'[ ]+(?=#|$)', Text.Blank),
+ # line breaks
+ (r'\n+', Text.Break),
+ # a comment
+ (r'#[^\n]*', Comment.Single),
+ # the '%YAML' directive
+ (r'^%YAML(?=[ ]|$)', reset_indent(Name.Directive),
+ 'yaml-directive'),
+ # the %TAG directive
+ (r'^%TAG(?=[ ]|$)', reset_indent(Name.Directive),
+ 'tag-directive'),
+ # document start and document end indicators
+ (r'^(?:---|\.\.\.)(?=[ ]|$)',
+ reset_indent(Punctuation.Document), 'block-line'),
+ # indentation spaces
+ (r'[ ]*(?![ \t\n\r\f\v]|$)',
+ save_indent(Text.Indent, start=True),
+ ('block-line', 'indentation')),
+ ],
+
+ # trailing whitespaces after directives or a block scalar indicator
+ 'ignored-line': [
+ # ignored whitespaces
+ (r'[ ]+(?=#|$)', Text.Blank),
+ # a comment
+ (r'#[^\n]*', Comment.Single),
+ # line break
+ (r'\n', Text.Break, '#pop:2'),
+ ],
+
+ # the %YAML directive
+ 'yaml-directive': [
+ # the version number
+ (r'([ ]+)([0-9]+\.[0-9]+)',
+ bygroups(Text.Blank, Literal.Version), 'ignored-line'),
+ ],
+
+ # the %YAG directive
+ 'tag-directive': [
+ # a tag handle and the corresponding prefix
+ (r'([ ]+)(!|![0-9A-Za-z_-]*!)'
+ r'([ ]+)(!|!?[0-9A-Za-z;/?:@&=+$,_.!~*\'()\[\]%-]+)',
+ bygroups(Text.Blank, Name.Type, Text.Blank, Name.Type),
+ 'ignored-line'),
+ ],
+
+ # block scalar indicators and indentation spaces
+ 'indentation': [
+ # trailing whitespaces are ignored
+ (r'[ ]*$', something(Text.Blank), '#pop:2'),
+ # whitespaces preceding block collection indicators
+ (r'[ ]+(?=[?:-](?:[ ]|$))', save_indent(Text.Indent)),
+ # block collection indicators
+ (r'[?:-](?=[ ]|$)', set_indent(Punctuation.Indicator)),
+ # the beginning a block line
+ (r'[ ]*', save_indent(Text.Indent), '#pop'),
+ ],
+
+ # an indented line in the block context
+ 'block-line': [
+ # the line end
+ (r'[ ]*(?=#|$)', something(Text.Blank), '#pop'),
+ # whitespaces separating tokens
+ (r'[ ]+', Text.Blank),
+ # tags, anchors and aliases,
+ include('descriptors'),
+ # block collections and scalars
+ include('block-nodes'),
+ # flow collections and quoted scalars
+ include('flow-nodes'),
+ # a plain scalar
+ (r'(?=[^ \t\n\r\f\v?:,\[\]{}#&*!|>\'"%@`-]|[?:-][^ \t\n\r\f\v])',
+ something(Literal.Scalar.Plain),
+ 'plain-scalar-in-block-context'),
+ ],
+
+ # tags, anchors, aliases
+ 'descriptors' : [
+ # a full-form tag
+ (r'!<[0-9A-Za-z;/?:@&=+$,_.!~*\'()\[\]%-]+>', Name.Type),
+ # a tag in the form '!', '!suffix' or '!handle!suffix'
+ (r'!(?:[0-9A-Za-z_-]+)?'
+ r'(?:![0-9A-Za-z;/?:@&=+$,_.!~*\'()\[\]%-]+)?', Name.Type),
+ # an anchor
+ (r'&[0-9A-Za-z_-]+', Name.Anchor),
+ # an alias
+ (r'\*[0-9A-Za-z_-]+', Name.Alias),
+ ],
+
+ # block collections and scalars
+ 'block-nodes': [
+ # implicit key
+ (r':(?=[ ]|$)', set_indent(Punctuation.Indicator, implicit=True)),
+ # literal and folded scalars
+ (r'[|>]', Punctuation.Indicator,
+ ('block-scalar-content', 'block-scalar-header')),
+ ],
+
+ # flow collections and quoted scalars
+ 'flow-nodes': [
+ # a flow sequence
+ (r'\[', Punctuation.Indicator, 'flow-sequence'),
+ # a flow mapping
+ (r'\{', Punctuation.Indicator, 'flow-mapping'),
+ # a single-quoted scalar
+ (r'\'', Literal.Scalar.Flow.Quote, 'single-quoted-scalar'),
+ # a double-quoted scalar
+ (r'\"', Literal.Scalar.Flow.Quote, 'double-quoted-scalar'),
+ ],
+
+ # the content of a flow collection
+ 'flow-collection': [
+ # whitespaces
+ (r'[ ]+', Text.Blank),
+ # line breaks
+ (r'\n+', Text.Break),
+ # a comment
+ (r'#[^\n]*', Comment.Single),
+ # simple indicators
+ (r'[?:,]', Punctuation.Indicator),
+ # tags, anchors and aliases
+ include('descriptors'),
+ # nested collections and quoted scalars
+ include('flow-nodes'),
+ # a plain scalar
+ (r'(?=[^ \t\n\r\f\v?:,\[\]{}#&*!|>\'"%@`])',
+ something(Literal.Scalar.Plain),
+ 'plain-scalar-in-flow-context'),
+ ],
+
+ # a flow sequence indicated by '[' and ']'
+ 'flow-sequence': [
+ # include flow collection rules
+ include('flow-collection'),
+ # the closing indicator
+ (r'\]', Punctuation.Indicator, '#pop'),
+ ],
+
+ # a flow mapping indicated by '{' and '}'
+ 'flow-mapping': [
+ # include flow collection rules
+ include('flow-collection'),
+ # the closing indicator
+ (r'\}', Punctuation.Indicator, '#pop'),
+ ],
+
+ # block scalar lines
+ 'block-scalar-content': [
+ # line break
+ (r'\n', Text.Break),
+ # empty line
+ (r'^[ ]+$',
+ parse_block_scalar_empty_line(Text.Indent,
+ Literal.Scalar.Block)),
+ # indentation spaces (we may leave the state here)
+ (r'^[ ]*', parse_block_scalar_indent(Text.Indent)),
+ # line content
+ (r'[^\n\r\f\v]+', Literal.Scalar.Block),
+ ],
+
+ # the content of a literal or folded scalar
+ 'block-scalar-header': [
+ # indentation indicator followed by chomping flag
+ (r'([1-9])?[+-]?(?=[ ]|$)',
+ set_block_scalar_indent(Punctuation.Indicator),
+ 'ignored-line'),
+ # chomping flag followed by indentation indicator
+ (r'[+-]?([1-9])?(?=[ ]|$)',
+ set_block_scalar_indent(Punctuation.Indicator),
+ 'ignored-line'),
+ ],
+
+ # ignored and regular whitespaces in quoted scalars
+ 'quoted-scalar-whitespaces': [
+ # leading and trailing whitespaces are ignored
+ (r'^[ ]+|[ ]+$', Text.Blank),
+ # line breaks are ignored
+ (r'\n+', Text.Break),
+ # other whitespaces are a part of the value
+ (r'[ ]+', Literal.Scalar.Flow),
+ ],
+
+ # single-quoted scalars
+ 'single-quoted-scalar': [
+ # include whitespace and line break rules
+ include('quoted-scalar-whitespaces'),
+ # escaping of the quote character
+ (r'\'\'', Literal.Scalar.Flow.Escape),
+ # regular non-whitespace characters
+ (r'[^ \t\n\r\f\v\']+', Literal.Scalar.Flow),
+ # the closing quote
+ (r'\'', Literal.Scalar.Flow.Quote, '#pop'),
+ ],
+
+ # double-quoted scalars
+ 'double-quoted-scalar': [
+ # include whitespace and line break rules
+ include('quoted-scalar-whitespaces'),
+ # escaping of special characters
+ (r'\\[0abt\tn\nvfre "\\N_LP]', Literal.Scalar.Flow.Escape),
+ # escape codes
+ (r'\\(?:x[0-9A-Fa-f]{2}|u[0-9A-Fa-f]{4}|U[0-9A-Fa-f]{8})',
+ Literal.Scalar.Flow.Escape),
+ # regular non-whitespace characters
+ (r'[^ \t\n\r\f\v\"\\]+', Literal.Scalar.Flow),
+ # the closing quote
+ (r'"', Literal.Scalar.Flow.Quote, '#pop'),
+ ],
+
+ # the beginning of a new line while scanning a plain scalar
+ 'plain-scalar-in-block-context-new-line': [
+ # empty lines
+ (r'^[ ]+$', Text.Blank),
+ # line breaks
+ (r'\n+', Text.Break),
+ # document start and document end indicators
+ (r'^(?=---|\.\.\.)', something(Punctuation.Document), '#pop:3'),
+ # indentation spaces (we may leave the block line state here)
+ (r'^[ ]*', parse_plain_scalar_indent(Text.Indent), '#pop'),
+ ],
+
+ # a plain scalar in the block context
+ 'plain-scalar-in-block-context': [
+ # the scalar ends with the ':' indicator
+ (r'[ ]*(?=:[ ]|:$)', something(Text.Blank), '#pop'),
+ # the scalar ends with whitespaces followed by a comment
+ (r'[ ]+(?=#)', Text.Blank, '#pop'),
+ # trailing whitespaces are ignored
+ (r'[ ]+$', Text.Blank),
+ # line breaks are ignored
+ (r'\n+', Text.Break, 'plain-scalar-in-block-context-new-line'),
+ # other whitespaces are a part of the value
+ (r'[ ]+', Literal.Scalar.Plain),
+ # regular non-whitespace characters
+ (r'(?::(?![ \t\n\r\f\v])|[^ \t\n\r\f\v:])+',
+ Literal.Scalar.Plain),
+ ],
+
+ # a plain scalar is the flow context
+ 'plain-scalar-in-flow-context': [
+ # the scalar ends with an indicator character
+ (r'[ ]*(?=[,:?\[\]{}])', something(Text.Blank), '#pop'),
+ # the scalar ends with a comment
+ (r'[ ]+(?=#)', Text.Blank, '#pop'),
+ # leading and trailing whitespaces are ignored
+ (r'^[ ]+|[ ]+$', Text.Blank),
+ # line breaks are ignored
+ (r'\n+', Text.Break),
+ # other whitespaces are a part of the value
+ (r'[ ]+', Literal.Scalar.Plain),
+ # regular non-whitespace characters
+ (r'[^ \t\n\r\f\v,:?\[\]{}]+', Literal.Scalar.Plain),
+ ],
+
+ }
+
+ def get_tokens_unprocessed(self, text=None, context=None):
+ if context is None:
+ context = YAMLLexerContext(text, 0)
+ return super(YAMLLexer, self).get_tokens_unprocessed(text, context)
+
+
diff --git a/third_party/python/PyYAML/examples/yaml-highlight/yaml_hl.cfg b/third_party/python/PyYAML/examples/yaml-highlight/yaml_hl.cfg
new file mode 100644
index 0000000000..69bb847764
--- /dev/null
+++ b/third_party/python/PyYAML/examples/yaml-highlight/yaml_hl.cfg
@@ -0,0 +1,115 @@
+%YAML 1.1
+---
+
+ascii:
+
+ header: "\e[0;1;30;40m"
+
+ footer: "\e[0m"
+
+ tokens:
+ stream-start:
+ stream-end:
+ directive: { start: "\e[35m", end: "\e[0;1;30;40m" }
+ document-start: { start: "\e[35m", end: "\e[0;1;30;40m" }
+ document-end: { start: "\e[35m", end: "\e[0;1;30;40m" }
+ block-sequence-start:
+ block-mapping-start:
+ block-end:
+ flow-sequence-start: { start: "\e[33m", end: "\e[0;1;30;40m" }
+ flow-mapping-start: { start: "\e[33m", end: "\e[0;1;30;40m" }
+ flow-sequence-end: { start: "\e[33m", end: "\e[0;1;30;40m" }
+ flow-mapping-end: { start: "\e[33m", end: "\e[0;1;30;40m" }
+ key: { start: "\e[33m", end: "\e[0;1;30;40m" }
+ value: { start: "\e[33m", end: "\e[0;1;30;40m" }
+ block-entry: { start: "\e[33m", end: "\e[0;1;30;40m" }
+ flow-entry: { start: "\e[33m", end: "\e[0;1;30;40m" }
+ alias: { start: "\e[32m", end: "\e[0;1;30;40m" }
+ anchor: { start: "\e[32m", end: "\e[0;1;30;40m" }
+ tag: { start: "\e[32m", end: "\e[0;1;30;40m" }
+ scalar: { start: "\e[36m", end: "\e[0;1;30;40m" }
+
+ replaces:
+ - "\r\n": "\n"
+ - "\r": "\n"
+ - "\n": "\n"
+ - "\x85": "\n"
+ - "\u2028": "\n"
+ - "\u2029": "\n"
+
+html: &html
+
+ tokens:
+ stream-start:
+ stream-end:
+ directive: { start: <code class="directive_token">, end: </code> }
+ document-start: { start: <code class="document_start_token">, end: </code> }
+ document-end: { start: <code class="document_end_token">, end: </code> }
+ block-sequence-start:
+ block-mapping-start:
+ block-end:
+ flow-sequence-start: { start: <code class="delimiter_token">, end: </code> }
+ flow-mapping-start: { start: <code class="delimiter_token">, end: </code> }
+ flow-sequence-end: { start: <code class="delimiter_token">, end: </code> }
+ flow-mapping-end: { start: <code class="delimiter_token">, end: </code> }
+ key: { start: <code class="delimiter_token">, end: </code> }
+ value: { start: <code class="delimiter_token">, end: </code> }
+ block-entry: { start: <code class="delimiter_token">, end: </code> }
+ flow-entry: { start: <code class="delimiter_token">, end: </code> }
+ alias: { start: <code class="anchor_token">, end: </code> }
+ anchor: { start: <code class="anchor_token">, end: </code> }
+ tag: { start: <code class="tag_token">, end: </code> }
+ scalar: { start: <code class="scalar_token">, end: </code> }
+
+ events:
+ stream-start: { start: <pre class="yaml_stream"> }
+ stream-end: { end: </pre> }
+ document-start: { start: <span class="document"> }
+ document-end: { end: </span> }
+ sequence-start: { start: <span class="sequence"> }
+ sequence-end: { end: </span> }
+ mapping-start: { start: <span class="mapping"> }
+ mapping-end: { end: </span> }
+ scalar: { start: <span class="scalar">, end: </span> }
+
+ replaces:
+ - "\r\n": "\n"
+ - "\r": "\n"
+ - "\n": "\n"
+ - "\x85": "\n"
+ - "\u2028": "\n"
+ - "\u2029": "\n"
+ - "&": "&amp;"
+ - "<": "&lt;"
+ - ">": "&gt;"
+
+html-page:
+
+ header: |
+ <html>
+ <head>
+ <title>A YAML stream</title>
+ <style type="text/css">
+ .document { background: #FFF }
+ .sequence { background: #EEF }
+ .mapping { background: #EFE }
+ .scalar { background: #FEE }
+ .directive_token { color: #C0C }
+ .document_start_token { color: #C0C; font-weight: bold }
+ .document_end_token { color: #C0C; font-weight: bold }
+ .delimiter_token { color: #600; font-weight: bold }
+ .anchor_token { color: #090 }
+ .tag_token { color: #090 }
+ .scalar_token { color: #000 }
+ .yaml_stream { color: #999 }
+ </style>
+ <body>
+
+ footer: |
+ </body>
+ </html>
+
+ <<: *html
+
+
+# vim: ft=yaml
diff --git a/third_party/python/PyYAML/examples/yaml-highlight/yaml_hl.py b/third_party/python/PyYAML/examples/yaml-highlight/yaml_hl.py
new file mode 100755
index 0000000000..96e0ae7b1b
--- /dev/null
+++ b/third_party/python/PyYAML/examples/yaml-highlight/yaml_hl.py
@@ -0,0 +1,114 @@
+#!/usr/bin/python
+
+import yaml, codecs, sys, os.path, optparse
+
+class Style:
+
+ def __init__(self, header=None, footer=None,
+ tokens=None, events=None, replaces=None):
+ self.header = header
+ self.footer = footer
+ self.replaces = replaces
+ self.substitutions = {}
+ for domain, Class in [(tokens, 'Token'), (events, 'Event')]:
+ if not domain:
+ continue
+ for key in domain:
+ name = ''.join([part.capitalize() for part in key.split('-')])
+ cls = getattr(yaml, '%s%s' % (name, Class))
+ value = domain[key]
+ if not value:
+ continue
+ start = value.get('start')
+ end = value.get('end')
+ if start:
+ self.substitutions[cls, -1] = start
+ if end:
+ self.substitutions[cls, +1] = end
+
+ def __setstate__(self, state):
+ self.__init__(**state)
+
+yaml.add_path_resolver(u'tag:yaml.org,2002:python/object:__main__.Style',
+ [None], dict)
+yaml.add_path_resolver(u'tag:yaml.org,2002:pairs',
+ [None, u'replaces'], list)
+
+class YAMLHighlight:
+
+ def __init__(self, options):
+ config = yaml.full_load(file(options.config, 'rb').read())
+ self.style = config[options.style]
+ if options.input:
+ self.input = file(options.input, 'rb')
+ else:
+ self.input = sys.stdin
+ if options.output:
+ self.output = file(options.output, 'wb')
+ else:
+ self.output = sys.stdout
+
+ def highlight(self):
+ input = self.input.read()
+ if input.startswith(codecs.BOM_UTF16_LE):
+ input = unicode(input, 'utf-16-le')
+ elif input.startswith(codecs.BOM_UTF16_BE):
+ input = unicode(input, 'utf-16-be')
+ else:
+ input = unicode(input, 'utf-8')
+ substitutions = self.style.substitutions
+ tokens = yaml.scan(input)
+ events = yaml.parse(input)
+ markers = []
+ number = 0
+ for token in tokens:
+ number += 1
+ if token.start_mark.index != token.end_mark.index:
+ cls = token.__class__
+ if (cls, -1) in substitutions:
+ markers.append([token.start_mark.index, +2, number, substitutions[cls, -1]])
+ if (cls, +1) in substitutions:
+ markers.append([token.end_mark.index, -2, number, substitutions[cls, +1]])
+ number = 0
+ for event in events:
+ number += 1
+ cls = event.__class__
+ if (cls, -1) in substitutions:
+ markers.append([event.start_mark.index, +1, number, substitutions[cls, -1]])
+ if (cls, +1) in substitutions:
+ markers.append([event.end_mark.index, -1, number, substitutions[cls, +1]])
+ markers.sort()
+ markers.reverse()
+ chunks = []
+ position = len(input)
+ for index, weight1, weight2, substitution in markers:
+ if index < position:
+ chunk = input[index:position]
+ for substring, replacement in self.style.replaces:
+ chunk = chunk.replace(substring, replacement)
+ chunks.append(chunk)
+ position = index
+ chunks.append(substitution)
+ chunks.reverse()
+ result = u''.join(chunks)
+ if self.style.header:
+ self.output.write(self.style.header)
+ self.output.write(result.encode('utf-8'))
+ if self.style.footer:
+ self.output.write(self.style.footer)
+
+if __name__ == '__main__':
+ parser = optparse.OptionParser()
+ parser.add_option('-s', '--style', dest='style', default='ascii',
+ help="specify the highlighting style", metavar='STYLE')
+ parser.add_option('-c', '--config', dest='config',
+ default=os.path.join(os.path.dirname(sys.argv[0]), 'yaml_hl.cfg'),
+ help="set an alternative configuration file", metavar='CONFIG')
+ parser.add_option('-i', '--input', dest='input', default=None,
+ help="set the input file (default: stdin)", metavar='FILE')
+ parser.add_option('-o', '--output', dest='output', default=None,
+ help="set the output file (default: stdout)", metavar='FILE')
+ (options, args) = parser.parse_args()
+ hl = YAMLHighlight(options)
+ hl.highlight()
+
diff --git a/third_party/python/PyYAML/lib/PyYAML.egg-info/PKG-INFO b/third_party/python/PyYAML/lib/PyYAML.egg-info/PKG-INFO
new file mode 100644
index 0000000000..c8905983e3
--- /dev/null
+++ b/third_party/python/PyYAML/lib/PyYAML.egg-info/PKG-INFO
@@ -0,0 +1,46 @@
+Metadata-Version: 2.1
+Name: PyYAML
+Version: 6.0.1
+Summary: YAML parser and emitter for Python
+Home-page: https://pyyaml.org/
+Download-URL: https://pypi.org/project/PyYAML/
+Author: Kirill Simonov
+Author-email: xi@resolvent.net
+License: MIT
+Project-URL: Bug Tracker, https://github.com/yaml/pyyaml/issues
+Project-URL: CI, https://github.com/yaml/pyyaml/actions
+Project-URL: Documentation, https://pyyaml.org/wiki/PyYAMLDocumentation
+Project-URL: Mailing lists, http://lists.sourceforge.net/lists/listinfo/yaml-core
+Project-URL: Source Code, https://github.com/yaml/pyyaml
+Platform: Any
+Classifier: Development Status :: 5 - Production/Stable
+Classifier: Intended Audience :: Developers
+Classifier: License :: OSI Approved :: MIT License
+Classifier: Operating System :: OS Independent
+Classifier: Programming Language :: Cython
+Classifier: Programming Language :: Python
+Classifier: Programming Language :: Python :: 3
+Classifier: Programming Language :: Python :: 3.6
+Classifier: Programming Language :: Python :: 3.7
+Classifier: Programming Language :: Python :: 3.8
+Classifier: Programming Language :: Python :: 3.9
+Classifier: Programming Language :: Python :: 3.10
+Classifier: Programming Language :: Python :: 3.11
+Classifier: Programming Language :: Python :: Implementation :: CPython
+Classifier: Programming Language :: Python :: Implementation :: PyPy
+Classifier: Topic :: Software Development :: Libraries :: Python Modules
+Classifier: Topic :: Text Processing :: Markup
+Requires-Python: >=3.6
+License-File: LICENSE
+
+YAML is a data serialization format designed for human readability
+and interaction with scripting languages. PyYAML is a YAML parser
+and emitter for Python.
+
+PyYAML features a complete YAML 1.1 parser, Unicode support, pickle
+support, capable extension API, and sensible error messages. PyYAML
+supports standard YAML tags and provides Python-specific tags that
+allow to represent an arbitrary Python object.
+
+PyYAML is applicable for a broad range of tasks from complex
+configuration files to object serialization and persistence.
diff --git a/third_party/python/PyYAML/lib/PyYAML.egg-info/SOURCES.txt b/third_party/python/PyYAML/lib/PyYAML.egg-info/SOURCES.txt
new file mode 100644
index 0000000000..d67072d4bf
--- /dev/null
+++ b/third_party/python/PyYAML/lib/PyYAML.egg-info/SOURCES.txt
@@ -0,0 +1,634 @@
+CHANGES
+LICENSE
+MANIFEST.in
+Makefile
+README.md
+pyproject.toml
+setup.py
+examples/pygments-lexer/example.yaml
+examples/pygments-lexer/yaml.py
+examples/yaml-highlight/yaml_hl.cfg
+examples/yaml-highlight/yaml_hl.py
+lib/PyYAML.egg-info/PKG-INFO
+lib/PyYAML.egg-info/SOURCES.txt
+lib/PyYAML.egg-info/dependency_links.txt
+lib/PyYAML.egg-info/top_level.txt
+lib/_yaml/__init__.py
+lib/yaml/__init__.py
+lib/yaml/composer.py
+lib/yaml/constructor.py
+lib/yaml/cyaml.py
+lib/yaml/dumper.py
+lib/yaml/emitter.py
+lib/yaml/error.py
+lib/yaml/events.py
+lib/yaml/loader.py
+lib/yaml/nodes.py
+lib/yaml/parser.py
+lib/yaml/reader.py
+lib/yaml/representer.py
+lib/yaml/resolver.py
+lib/yaml/scanner.py
+lib/yaml/serializer.py
+lib/yaml/tokens.py
+tests/data/a-nasty-libyaml-bug.loader-error
+tests/data/aliases-cdumper-bug.code
+tests/data/aliases.events
+tests/data/bool.data
+tests/data/bool.detect
+tests/data/construct-binary-py2.code
+tests/data/construct-binary-py2.data
+tests/data/construct-binary-py3.code
+tests/data/construct-binary-py3.data
+tests/data/construct-bool.code
+tests/data/construct-bool.data
+tests/data/construct-custom.code
+tests/data/construct-custom.data
+tests/data/construct-float.code
+tests/data/construct-float.data
+tests/data/construct-int.code
+tests/data/construct-int.data
+tests/data/construct-map.code
+tests/data/construct-map.data
+tests/data/construct-merge.code
+tests/data/construct-merge.data
+tests/data/construct-null.code
+tests/data/construct-null.data
+tests/data/construct-omap.code
+tests/data/construct-omap.data
+tests/data/construct-pairs.code
+tests/data/construct-pairs.data
+tests/data/construct-python-bool.code
+tests/data/construct-python-bool.data
+tests/data/construct-python-bytes-py3.code
+tests/data/construct-python-bytes-py3.data
+tests/data/construct-python-complex.code
+tests/data/construct-python-complex.data
+tests/data/construct-python-float.code
+tests/data/construct-python-float.data
+tests/data/construct-python-int.code
+tests/data/construct-python-int.data
+tests/data/construct-python-long-short-py2.code
+tests/data/construct-python-long-short-py2.data
+tests/data/construct-python-long-short-py3.code
+tests/data/construct-python-long-short-py3.data
+tests/data/construct-python-name-module.code
+tests/data/construct-python-name-module.data
+tests/data/construct-python-none.code
+tests/data/construct-python-none.data
+tests/data/construct-python-object.code
+tests/data/construct-python-object.data
+tests/data/construct-python-str-ascii.code
+tests/data/construct-python-str-ascii.data
+tests/data/construct-python-str-utf8-py2.code
+tests/data/construct-python-str-utf8-py2.data
+tests/data/construct-python-str-utf8-py3.code
+tests/data/construct-python-str-utf8-py3.data
+tests/data/construct-python-tuple-list-dict.code
+tests/data/construct-python-tuple-list-dict.data
+tests/data/construct-python-unicode-ascii-py2.code
+tests/data/construct-python-unicode-ascii-py2.data
+tests/data/construct-python-unicode-ascii-py3.code
+tests/data/construct-python-unicode-ascii-py3.data
+tests/data/construct-python-unicode-utf8-py2.code
+tests/data/construct-python-unicode-utf8-py2.data
+tests/data/construct-python-unicode-utf8-py3.code
+tests/data/construct-python-unicode-utf8-py3.data
+tests/data/construct-seq.code
+tests/data/construct-seq.data
+tests/data/construct-set.code
+tests/data/construct-set.data
+tests/data/construct-str-ascii.code
+tests/data/construct-str-ascii.data
+tests/data/construct-str-utf8-py2.code
+tests/data/construct-str-utf8-py2.data
+tests/data/construct-str-utf8-py3.code
+tests/data/construct-str-utf8-py3.data
+tests/data/construct-str.code
+tests/data/construct-str.data
+tests/data/construct-timestamp.code
+tests/data/construct-timestamp.data
+tests/data/construct-value.code
+tests/data/construct-value.data
+tests/data/document-separator-in-quoted-scalar.loader-error
+tests/data/documents.events
+tests/data/duplicate-anchor-1.loader-error
+tests/data/duplicate-anchor-2.loader-error
+tests/data/duplicate-key.former-loader-error.code
+tests/data/duplicate-key.former-loader-error.data
+tests/data/duplicate-mapping-key.former-loader-error.code
+tests/data/duplicate-mapping-key.former-loader-error.data
+tests/data/duplicate-merge-key.former-loader-error.code
+tests/data/duplicate-merge-key.former-loader-error.data
+tests/data/duplicate-tag-directive.loader-error
+tests/data/duplicate-value-key.former-loader-error.code
+tests/data/duplicate-value-key.former-loader-error.data
+tests/data/duplicate-yaml-directive.loader-error
+tests/data/emit-block-scalar-in-simple-key-context-bug.canonical
+tests/data/emit-block-scalar-in-simple-key-context-bug.data
+tests/data/emitting-unacceptable-unicode-character-bug-py3.code
+tests/data/emitting-unacceptable-unicode-character-bug-py3.data
+tests/data/emitting-unacceptable-unicode-character-bug-py3.skip-ext
+tests/data/emitting-unacceptable-unicode-character-bug.code
+tests/data/emitting-unacceptable-unicode-character-bug.data
+tests/data/emitting-unacceptable-unicode-character-bug.skip-ext
+tests/data/emoticons.unicode
+tests/data/emoticons2.unicode
+tests/data/empty-anchor.emitter-error
+tests/data/empty-document-bug.canonical
+tests/data/empty-document-bug.data
+tests/data/empty-document-bug.empty
+tests/data/empty-documents.single-loader-error
+tests/data/empty-python-module.loader-error
+tests/data/empty-python-name.loader-error
+tests/data/empty-tag-handle.emitter-error
+tests/data/empty-tag-prefix.emitter-error
+tests/data/empty-tag.emitter-error
+tests/data/expected-document-end.emitter-error
+tests/data/expected-document-start.emitter-error
+tests/data/expected-mapping.loader-error
+tests/data/expected-node-1.emitter-error
+tests/data/expected-node-2.emitter-error
+tests/data/expected-nothing.emitter-error
+tests/data/expected-scalar.loader-error
+tests/data/expected-sequence.loader-error
+tests/data/expected-stream-start.emitter-error
+tests/data/explicit-document.single-loader-error
+tests/data/fetch-complex-value-bug.loader-error
+tests/data/float-representer-2.3-bug.code
+tests/data/float-representer-2.3-bug.data
+tests/data/float.data
+tests/data/float.detect
+tests/data/forbidden-entry.loader-error
+tests/data/forbidden-key.loader-error
+tests/data/forbidden-value.loader-error
+tests/data/implicit-document.single-loader-error
+tests/data/int.data
+tests/data/int.detect
+tests/data/invalid-anchor-1.loader-error
+tests/data/invalid-anchor-2.loader-error
+tests/data/invalid-anchor.emitter-error
+tests/data/invalid-base64-data-2.loader-error
+tests/data/invalid-base64-data.loader-error
+tests/data/invalid-block-scalar-indicator.loader-error
+tests/data/invalid-character.loader-error
+tests/data/invalid-character.stream-error
+tests/data/invalid-directive-line.loader-error
+tests/data/invalid-directive-name-1.loader-error
+tests/data/invalid-directive-name-2.loader-error
+tests/data/invalid-escape-character.loader-error
+tests/data/invalid-escape-numbers.loader-error
+tests/data/invalid-indentation-indicator-1.loader-error
+tests/data/invalid-indentation-indicator-2.loader-error
+tests/data/invalid-item-without-trailing-break.loader-error
+tests/data/invalid-merge-1.loader-error
+tests/data/invalid-merge-2.loader-error
+tests/data/invalid-omap-1.loader-error
+tests/data/invalid-omap-2.loader-error
+tests/data/invalid-omap-3.loader-error
+tests/data/invalid-pairs-1.loader-error
+tests/data/invalid-pairs-2.loader-error
+tests/data/invalid-pairs-3.loader-error
+tests/data/invalid-python-bytes-2-py3.loader-error
+tests/data/invalid-python-bytes-py3.loader-error
+tests/data/invalid-python-module-kind.loader-error
+tests/data/invalid-python-module-value.loader-error
+tests/data/invalid-python-module.loader-error
+tests/data/invalid-python-name-kind.loader-error
+tests/data/invalid-python-name-module.loader-error
+tests/data/invalid-python-name-object.loader-error
+tests/data/invalid-python-name-value.loader-error
+tests/data/invalid-simple-key.loader-error
+tests/data/invalid-single-quote-bug.code
+tests/data/invalid-single-quote-bug.data
+tests/data/invalid-starting-character.loader-error
+tests/data/invalid-tag-1.loader-error
+tests/data/invalid-tag-2.loader-error
+tests/data/invalid-tag-directive-handle.loader-error
+tests/data/invalid-tag-directive-prefix.loader-error
+tests/data/invalid-tag-handle-1.emitter-error
+tests/data/invalid-tag-handle-1.loader-error
+tests/data/invalid-tag-handle-2.emitter-error
+tests/data/invalid-tag-handle-2.loader-error
+tests/data/invalid-uri-escapes-1.loader-error
+tests/data/invalid-uri-escapes-2.loader-error
+tests/data/invalid-uri-escapes-3.loader-error
+tests/data/invalid-uri.loader-error
+tests/data/invalid-utf8-byte.loader-error
+tests/data/invalid-utf8-byte.stream-error
+tests/data/invalid-yaml-directive-version-1.loader-error
+tests/data/invalid-yaml-directive-version-2.loader-error
+tests/data/invalid-yaml-directive-version-3.loader-error
+tests/data/invalid-yaml-directive-version-4.loader-error
+tests/data/invalid-yaml-directive-version-5.loader-error
+tests/data/invalid-yaml-directive-version-6.loader-error
+tests/data/invalid-yaml-version.loader-error
+tests/data/latin.unicode
+tests/data/mapping.sort
+tests/data/mapping.sorted
+tests/data/mappings.events
+tests/data/merge.data
+tests/data/merge.detect
+tests/data/more-floats.code
+tests/data/more-floats.data
+tests/data/multi-constructor.code
+tests/data/multi-constructor.multi
+tests/data/myfullloader.subclass_blacklist
+tests/data/negative-float-bug.code
+tests/data/negative-float-bug.data
+tests/data/no-alias-anchor.emitter-error
+tests/data/no-alias-anchor.skip-ext
+tests/data/no-block-collection-end.loader-error
+tests/data/no-block-mapping-end-2.loader-error
+tests/data/no-block-mapping-end.loader-error
+tests/data/no-document-start.loader-error
+tests/data/no-flow-mapping-end.loader-error
+tests/data/no-flow-sequence-end.loader-error
+tests/data/no-node-1.loader-error
+tests/data/no-node-2.loader-error
+tests/data/no-tag.emitter-error
+tests/data/null.data
+tests/data/null.detect
+tests/data/odd-utf16.stream-error
+tests/data/overwrite-state-new-constructor.loader-error
+tests/data/recursive-anchor.former-loader-error
+tests/data/recursive-dict.recursive
+tests/data/recursive-list.recursive
+tests/data/recursive-set.recursive
+tests/data/recursive-state.recursive
+tests/data/recursive-tuple.recursive
+tests/data/recursive.former-dumper-error
+tests/data/remove-possible-simple-key-bug.loader-error
+tests/data/resolver.data
+tests/data/resolver.path
+tests/data/run-parser-crash-bug.data
+tests/data/scalars.events
+tests/data/scan-document-end-bug.canonical
+tests/data/scan-document-end-bug.data
+tests/data/scan-line-break-bug.canonical
+tests/data/scan-line-break-bug.data
+tests/data/sequences.events
+tests/data/serializer-is-already-opened.dumper-error
+tests/data/serializer-is-closed-1.dumper-error
+tests/data/serializer-is-closed-2.dumper-error
+tests/data/serializer-is-not-opened-1.dumper-error
+tests/data/serializer-is-not-opened-2.dumper-error
+tests/data/single-dot-is-not-float-bug.code
+tests/data/single-dot-is-not-float-bug.data
+tests/data/sloppy-indentation.canonical
+tests/data/sloppy-indentation.data
+tests/data/spec-02-01.data
+tests/data/spec-02-01.structure
+tests/data/spec-02-01.tokens
+tests/data/spec-02-02.data
+tests/data/spec-02-02.structure
+tests/data/spec-02-02.tokens
+tests/data/spec-02-03.data
+tests/data/spec-02-03.structure
+tests/data/spec-02-03.tokens
+tests/data/spec-02-04.data
+tests/data/spec-02-04.structure
+tests/data/spec-02-04.tokens
+tests/data/spec-02-05.data
+tests/data/spec-02-05.structure
+tests/data/spec-02-05.tokens
+tests/data/spec-02-06.data
+tests/data/spec-02-06.structure
+tests/data/spec-02-06.tokens
+tests/data/spec-02-07.data
+tests/data/spec-02-07.structure
+tests/data/spec-02-07.tokens
+tests/data/spec-02-08.data
+tests/data/spec-02-08.structure
+tests/data/spec-02-08.tokens
+tests/data/spec-02-09.data
+tests/data/spec-02-09.structure
+tests/data/spec-02-09.tokens
+tests/data/spec-02-10.data
+tests/data/spec-02-10.structure
+tests/data/spec-02-10.tokens
+tests/data/spec-02-11.data
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+tests/data/tags.events
+tests/data/test_mark.marks
+tests/data/timestamp-bugs.code
+tests/data/timestamp-bugs.data
+tests/data/timestamp.data
+tests/data/timestamp.detect
+tests/data/unacceptable-key.loader-error
+tests/data/unclosed-bracket.loader-error
+tests/data/unclosed-quoted-scalar.loader-error
+tests/data/undefined-anchor.loader-error
+tests/data/undefined-constructor.loader-error
+tests/data/undefined-tag-handle.loader-error
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+tests/data/unsupported-version.emitter-error
+tests/data/utf16be.code
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+tests/data/utf8-implicit.code
+tests/data/utf8-implicit.data
+tests/data/utf8.code
+tests/data/utf8.data
+tests/data/value.data
+tests/data/value.detect
+tests/data/yaml.data
+tests/data/yaml.detect
+tests/data/yaml11.schema
+tests/data/yaml11.schema-skip
+tests/lib/canonical.py
+tests/lib/test_all.py
+tests/lib/test_appliance.py
+tests/lib/test_build.py
+tests/lib/test_build_ext.py
+tests/lib/test_canonical.py
+tests/lib/test_constructor.py
+tests/lib/test_dump_load.py
+tests/lib/test_emitter.py
+tests/lib/test_errors.py
+tests/lib/test_input_output.py
+tests/lib/test_mark.py
+tests/lib/test_multi_constructor.py
+tests/lib/test_reader.py
+tests/lib/test_recursive.py
+tests/lib/test_representer.py
+tests/lib/test_resolver.py
+tests/lib/test_schema.py
+tests/lib/test_sort_keys.py
+tests/lib/test_structure.py
+tests/lib/test_tokens.py
+tests/lib/test_yaml.py
+tests/lib/test_yaml_ext.py
+yaml/__init__.pxd
+yaml/_yaml.h
+yaml/_yaml.pxd
+yaml/_yaml.pyx \ No newline at end of file
diff --git a/third_party/python/PyYAML/lib/PyYAML.egg-info/dependency_links.txt b/third_party/python/PyYAML/lib/PyYAML.egg-info/dependency_links.txt
new file mode 100644
index 0000000000..8b13789179
--- /dev/null
+++ b/third_party/python/PyYAML/lib/PyYAML.egg-info/dependency_links.txt
@@ -0,0 +1 @@
+
diff --git a/third_party/python/PyYAML/lib/PyYAML.egg-info/top_level.txt b/third_party/python/PyYAML/lib/PyYAML.egg-info/top_level.txt
new file mode 100644
index 0000000000..e6475e911f
--- /dev/null
+++ b/third_party/python/PyYAML/lib/PyYAML.egg-info/top_level.txt
@@ -0,0 +1,2 @@
+_yaml
+yaml
diff --git a/third_party/python/PyYAML/lib/_yaml/__init__.py b/third_party/python/PyYAML/lib/_yaml/__init__.py
new file mode 100644
index 0000000000..7baa8c4b68
--- /dev/null
+++ b/third_party/python/PyYAML/lib/_yaml/__init__.py
@@ -0,0 +1,33 @@
+# This is a stub package designed to roughly emulate the _yaml
+# extension module, which previously existed as a standalone module
+# and has been moved into the `yaml` package namespace.
+# It does not perfectly mimic its old counterpart, but should get
+# close enough for anyone who's relying on it even when they shouldn't.
+import yaml
+
+# in some circumstances, the yaml module we imoprted may be from a different version, so we need
+# to tread carefully when poking at it here (it may not have the attributes we expect)
+if not getattr(yaml, '__with_libyaml__', False):
+ from sys import version_info
+
+ exc = ModuleNotFoundError if version_info >= (3, 6) else ImportError
+ raise exc("No module named '_yaml'")
+else:
+ from yaml._yaml import *
+ import warnings
+ warnings.warn(
+ 'The _yaml extension module is now located at yaml._yaml'
+ ' and its location is subject to change. To use the'
+ ' LibYAML-based parser and emitter, import from `yaml`:'
+ ' `from yaml import CLoader as Loader, CDumper as Dumper`.',
+ DeprecationWarning
+ )
+ del warnings
+ # Don't `del yaml` here because yaml is actually an existing
+ # namespace member of _yaml.
+
+__name__ = '_yaml'
+# If the module is top-level (i.e. not a part of any specific package)
+# then the attribute should be set to ''.
+# https://docs.python.org/3.8/library/types.html
+__package__ = ''
diff --git a/third_party/python/PyYAML/lib/yaml/__init__.py b/third_party/python/PyYAML/lib/yaml/__init__.py
new file mode 100644
index 0000000000..8249361947
--- /dev/null
+++ b/third_party/python/PyYAML/lib/yaml/__init__.py
@@ -0,0 +1,390 @@
+
+from .error import *
+
+from .tokens import *
+from .events import *
+from .nodes import *
+
+from .loader import *
+from .dumper import *
+
+__version__ = '6.0.1'
+try:
+ from .cyaml import *
+ __with_libyaml__ = True
+except ImportError:
+ __with_libyaml__ = False
+
+import io
+
+#------------------------------------------------------------------------------
+# XXX "Warnings control" is now deprecated. Leaving in the API function to not
+# break code that uses it.
+#------------------------------------------------------------------------------
+def warnings(settings=None):
+ if settings is None:
+ return {}
+
+#------------------------------------------------------------------------------
+def scan(stream, Loader=Loader):
+ """
+ Scan a YAML stream and produce scanning tokens.
+ """
+ loader = Loader(stream)
+ try:
+ while loader.check_token():
+ yield loader.get_token()
+ finally:
+ loader.dispose()
+
+def parse(stream, Loader=Loader):
+ """
+ Parse a YAML stream and produce parsing events.
+ """
+ loader = Loader(stream)
+ try:
+ while loader.check_event():
+ yield loader.get_event()
+ finally:
+ loader.dispose()
+
+def compose(stream, Loader=Loader):
+ """
+ Parse the first YAML document in a stream
+ and produce the corresponding representation tree.
+ """
+ loader = Loader(stream)
+ try:
+ return loader.get_single_node()
+ finally:
+ loader.dispose()
+
+def compose_all(stream, Loader=Loader):
+ """
+ Parse all YAML documents in a stream
+ and produce corresponding representation trees.
+ """
+ loader = Loader(stream)
+ try:
+ while loader.check_node():
+ yield loader.get_node()
+ finally:
+ loader.dispose()
+
+def load(stream, Loader):
+ """
+ Parse the first YAML document in a stream
+ and produce the corresponding Python object.
+ """
+ loader = Loader(stream)
+ try:
+ return loader.get_single_data()
+ finally:
+ loader.dispose()
+
+def load_all(stream, Loader):
+ """
+ Parse all YAML documents in a stream
+ and produce corresponding Python objects.
+ """
+ loader = Loader(stream)
+ try:
+ while loader.check_data():
+ yield loader.get_data()
+ finally:
+ loader.dispose()
+
+def full_load(stream):
+ """
+ Parse the first YAML document in a stream
+ and produce the corresponding Python object.
+
+ Resolve all tags except those known to be
+ unsafe on untrusted input.
+ """
+ return load(stream, FullLoader)
+
+def full_load_all(stream):
+ """
+ Parse all YAML documents in a stream
+ and produce corresponding Python objects.
+
+ Resolve all tags except those known to be
+ unsafe on untrusted input.
+ """
+ return load_all(stream, FullLoader)
+
+def safe_load(stream):
+ """
+ Parse the first YAML document in a stream
+ and produce the corresponding Python object.
+
+ Resolve only basic YAML tags. This is known
+ to be safe for untrusted input.
+ """
+ return load(stream, SafeLoader)
+
+def safe_load_all(stream):
+ """
+ Parse all YAML documents in a stream
+ and produce corresponding Python objects.
+
+ Resolve only basic YAML tags. This is known
+ to be safe for untrusted input.
+ """
+ return load_all(stream, SafeLoader)
+
+def unsafe_load(stream):
+ """
+ Parse the first YAML document in a stream
+ and produce the corresponding Python object.
+
+ Resolve all tags, even those known to be
+ unsafe on untrusted input.
+ """
+ return load(stream, UnsafeLoader)
+
+def unsafe_load_all(stream):
+ """
+ Parse all YAML documents in a stream
+ and produce corresponding Python objects.
+
+ Resolve all tags, even those known to be
+ unsafe on untrusted input.
+ """
+ return load_all(stream, UnsafeLoader)
+
+def emit(events, stream=None, Dumper=Dumper,
+ canonical=None, indent=None, width=None,
+ allow_unicode=None, line_break=None):
+ """
+ Emit YAML parsing events into a stream.
+ If stream is None, return the produced string instead.
+ """
+ getvalue = None
+ if stream is None:
+ stream = io.StringIO()
+ getvalue = stream.getvalue
+ dumper = Dumper(stream, canonical=canonical, indent=indent, width=width,
+ allow_unicode=allow_unicode, line_break=line_break)
+ try:
+ for event in events:
+ dumper.emit(event)
+ finally:
+ dumper.dispose()
+ if getvalue:
+ return getvalue()
+
+def serialize_all(nodes, stream=None, Dumper=Dumper,
+ canonical=None, indent=None, width=None,
+ allow_unicode=None, line_break=None,
+ encoding=None, explicit_start=None, explicit_end=None,
+ version=None, tags=None):
+ """
+ Serialize a sequence of representation trees into a YAML stream.
+ If stream is None, return the produced string instead.
+ """
+ getvalue = None
+ if stream is None:
+ if encoding is None:
+ stream = io.StringIO()
+ else:
+ stream = io.BytesIO()
+ getvalue = stream.getvalue
+ dumper = Dumper(stream, canonical=canonical, indent=indent, width=width,
+ allow_unicode=allow_unicode, line_break=line_break,
+ encoding=encoding, version=version, tags=tags,
+ explicit_start=explicit_start, explicit_end=explicit_end)
+ try:
+ dumper.open()
+ for node in nodes:
+ dumper.serialize(node)
+ dumper.close()
+ finally:
+ dumper.dispose()
+ if getvalue:
+ return getvalue()
+
+def serialize(node, stream=None, Dumper=Dumper, **kwds):
+ """
+ Serialize a representation tree into a YAML stream.
+ If stream is None, return the produced string instead.
+ """
+ return serialize_all([node], stream, Dumper=Dumper, **kwds)
+
+def dump_all(documents, stream=None, Dumper=Dumper,
+ default_style=None, default_flow_style=False,
+ canonical=None, indent=None, width=None,
+ allow_unicode=None, line_break=None,
+ encoding=None, explicit_start=None, explicit_end=None,
+ version=None, tags=None, sort_keys=True):
+ """
+ Serialize a sequence of Python objects into a YAML stream.
+ If stream is None, return the produced string instead.
+ """
+ getvalue = None
+ if stream is None:
+ if encoding is None:
+ stream = io.StringIO()
+ else:
+ stream = io.BytesIO()
+ getvalue = stream.getvalue
+ dumper = Dumper(stream, default_style=default_style,
+ default_flow_style=default_flow_style,
+ canonical=canonical, indent=indent, width=width,
+ allow_unicode=allow_unicode, line_break=line_break,
+ encoding=encoding, version=version, tags=tags,
+ explicit_start=explicit_start, explicit_end=explicit_end, sort_keys=sort_keys)
+ try:
+ dumper.open()
+ for data in documents:
+ dumper.represent(data)
+ dumper.close()
+ finally:
+ dumper.dispose()
+ if getvalue:
+ return getvalue()
+
+def dump(data, stream=None, Dumper=Dumper, **kwds):
+ """
+ Serialize a Python object into a YAML stream.
+ If stream is None, return the produced string instead.
+ """
+ return dump_all([data], stream, Dumper=Dumper, **kwds)
+
+def safe_dump_all(documents, stream=None, **kwds):
+ """
+ Serialize a sequence of Python objects into a YAML stream.
+ Produce only basic YAML tags.
+ If stream is None, return the produced string instead.
+ """
+ return dump_all(documents, stream, Dumper=SafeDumper, **kwds)
+
+def safe_dump(data, stream=None, **kwds):
+ """
+ Serialize a Python object into a YAML stream.
+ Produce only basic YAML tags.
+ If stream is None, return the produced string instead.
+ """
+ return dump_all([data], stream, Dumper=SafeDumper, **kwds)
+
+def add_implicit_resolver(tag, regexp, first=None,
+ Loader=None, Dumper=Dumper):
+ """
+ Add an implicit scalar detector.
+ If an implicit scalar value matches the given regexp,
+ the corresponding tag is assigned to the scalar.
+ first is a sequence of possible initial characters or None.
+ """
+ if Loader is None:
+ loader.Loader.add_implicit_resolver(tag, regexp, first)
+ loader.FullLoader.add_implicit_resolver(tag, regexp, first)
+ loader.UnsafeLoader.add_implicit_resolver(tag, regexp, first)
+ else:
+ Loader.add_implicit_resolver(tag, regexp, first)
+ Dumper.add_implicit_resolver(tag, regexp, first)
+
+def add_path_resolver(tag, path, kind=None, Loader=None, Dumper=Dumper):
+ """
+ Add a path based resolver for the given tag.
+ A path is a list of keys that forms a path
+ to a node in the representation tree.
+ Keys can be string values, integers, or None.
+ """
+ if Loader is None:
+ loader.Loader.add_path_resolver(tag, path, kind)
+ loader.FullLoader.add_path_resolver(tag, path, kind)
+ loader.UnsafeLoader.add_path_resolver(tag, path, kind)
+ else:
+ Loader.add_path_resolver(tag, path, kind)
+ Dumper.add_path_resolver(tag, path, kind)
+
+def add_constructor(tag, constructor, Loader=None):
+ """
+ Add a constructor for the given tag.
+ Constructor is a function that accepts a Loader instance
+ and a node object and produces the corresponding Python object.
+ """
+ if Loader is None:
+ loader.Loader.add_constructor(tag, constructor)
+ loader.FullLoader.add_constructor(tag, constructor)
+ loader.UnsafeLoader.add_constructor(tag, constructor)
+ else:
+ Loader.add_constructor(tag, constructor)
+
+def add_multi_constructor(tag_prefix, multi_constructor, Loader=None):
+ """
+ Add a multi-constructor for the given tag prefix.
+ Multi-constructor is called for a node if its tag starts with tag_prefix.
+ Multi-constructor accepts a Loader instance, a tag suffix,
+ and a node object and produces the corresponding Python object.
+ """
+ if Loader is None:
+ loader.Loader.add_multi_constructor(tag_prefix, multi_constructor)
+ loader.FullLoader.add_multi_constructor(tag_prefix, multi_constructor)
+ loader.UnsafeLoader.add_multi_constructor(tag_prefix, multi_constructor)
+ else:
+ Loader.add_multi_constructor(tag_prefix, multi_constructor)
+
+def add_representer(data_type, representer, Dumper=Dumper):
+ """
+ Add a representer for the given type.
+ Representer is a function accepting a Dumper instance
+ and an instance of the given data type
+ and producing the corresponding representation node.
+ """
+ Dumper.add_representer(data_type, representer)
+
+def add_multi_representer(data_type, multi_representer, Dumper=Dumper):
+ """
+ Add a representer for the given type.
+ Multi-representer is a function accepting a Dumper instance
+ and an instance of the given data type or subtype
+ and producing the corresponding representation node.
+ """
+ Dumper.add_multi_representer(data_type, multi_representer)
+
+class YAMLObjectMetaclass(type):
+ """
+ The metaclass for YAMLObject.
+ """
+ def __init__(cls, name, bases, kwds):
+ super(YAMLObjectMetaclass, cls).__init__(name, bases, kwds)
+ if 'yaml_tag' in kwds and kwds['yaml_tag'] is not None:
+ if isinstance(cls.yaml_loader, list):
+ for loader in cls.yaml_loader:
+ loader.add_constructor(cls.yaml_tag, cls.from_yaml)
+ else:
+ cls.yaml_loader.add_constructor(cls.yaml_tag, cls.from_yaml)
+
+ cls.yaml_dumper.add_representer(cls, cls.to_yaml)
+
+class YAMLObject(metaclass=YAMLObjectMetaclass):
+ """
+ An object that can dump itself to a YAML stream
+ and load itself from a YAML stream.
+ """
+
+ __slots__ = () # no direct instantiation, so allow immutable subclasses
+
+ yaml_loader = [Loader, FullLoader, UnsafeLoader]
+ yaml_dumper = Dumper
+
+ yaml_tag = None
+ yaml_flow_style = None
+
+ @classmethod
+ def from_yaml(cls, loader, node):
+ """
+ Convert a representation node to a Python object.
+ """
+ return loader.construct_yaml_object(node, cls)
+
+ @classmethod
+ def to_yaml(cls, dumper, data):
+ """
+ Convert a Python object to a representation node.
+ """
+ return dumper.represent_yaml_object(cls.yaml_tag, data, cls,
+ flow_style=cls.yaml_flow_style)
+
diff --git a/third_party/python/PyYAML/lib/yaml/composer.py b/third_party/python/PyYAML/lib/yaml/composer.py
new file mode 100644
index 0000000000..6d15cb40e3
--- /dev/null
+++ b/third_party/python/PyYAML/lib/yaml/composer.py
@@ -0,0 +1,139 @@
+
+__all__ = ['Composer', 'ComposerError']
+
+from .error import MarkedYAMLError
+from .events import *
+from .nodes import *
+
+class ComposerError(MarkedYAMLError):
+ pass
+
+class Composer:
+
+ def __init__(self):
+ self.anchors = {}
+
+ def check_node(self):
+ # Drop the STREAM-START event.
+ if self.check_event(StreamStartEvent):
+ self.get_event()
+
+ # If there are more documents available?
+ return not self.check_event(StreamEndEvent)
+
+ def get_node(self):
+ # Get the root node of the next document.
+ if not self.check_event(StreamEndEvent):
+ return self.compose_document()
+
+ def get_single_node(self):
+ # Drop the STREAM-START event.
+ self.get_event()
+
+ # Compose a document if the stream is not empty.
+ document = None
+ if not self.check_event(StreamEndEvent):
+ document = self.compose_document()
+
+ # Ensure that the stream contains no more documents.
+ if not self.check_event(StreamEndEvent):
+ event = self.get_event()
+ raise ComposerError("expected a single document in the stream",
+ document.start_mark, "but found another document",
+ event.start_mark)
+
+ # Drop the STREAM-END event.
+ self.get_event()
+
+ return document
+
+ def compose_document(self):
+ # Drop the DOCUMENT-START event.
+ self.get_event()
+
+ # Compose the root node.
+ node = self.compose_node(None, None)
+
+ # Drop the DOCUMENT-END event.
+ self.get_event()
+
+ self.anchors = {}
+ return node
+
+ def compose_node(self, parent, index):
+ if self.check_event(AliasEvent):
+ event = self.get_event()
+ anchor = event.anchor
+ if anchor not in self.anchors:
+ raise ComposerError(None, None, "found undefined alias %r"
+ % anchor, event.start_mark)
+ return self.anchors[anchor]
+ event = self.peek_event()
+ anchor = event.anchor
+ if anchor is not None:
+ if anchor in self.anchors:
+ raise ComposerError("found duplicate anchor %r; first occurrence"
+ % anchor, self.anchors[anchor].start_mark,
+ "second occurrence", event.start_mark)
+ self.descend_resolver(parent, index)
+ if self.check_event(ScalarEvent):
+ node = self.compose_scalar_node(anchor)
+ elif self.check_event(SequenceStartEvent):
+ node = self.compose_sequence_node(anchor)
+ elif self.check_event(MappingStartEvent):
+ node = self.compose_mapping_node(anchor)
+ self.ascend_resolver()
+ return node
+
+ def compose_scalar_node(self, anchor):
+ event = self.get_event()
+ tag = event.tag
+ if tag is None or tag == '!':
+ tag = self.resolve(ScalarNode, event.value, event.implicit)
+ node = ScalarNode(tag, event.value,
+ event.start_mark, event.end_mark, style=event.style)
+ if anchor is not None:
+ self.anchors[anchor] = node
+ return node
+
+ def compose_sequence_node(self, anchor):
+ start_event = self.get_event()
+ tag = start_event.tag
+ if tag is None or tag == '!':
+ tag = self.resolve(SequenceNode, None, start_event.implicit)
+ node = SequenceNode(tag, [],
+ start_event.start_mark, None,
+ flow_style=start_event.flow_style)
+ if anchor is not None:
+ self.anchors[anchor] = node
+ index = 0
+ while not self.check_event(SequenceEndEvent):
+ node.value.append(self.compose_node(node, index))
+ index += 1
+ end_event = self.get_event()
+ node.end_mark = end_event.end_mark
+ return node
+
+ def compose_mapping_node(self, anchor):
+ start_event = self.get_event()
+ tag = start_event.tag
+ if tag is None or tag == '!':
+ tag = self.resolve(MappingNode, None, start_event.implicit)
+ node = MappingNode(tag, [],
+ start_event.start_mark, None,
+ flow_style=start_event.flow_style)
+ if anchor is not None:
+ self.anchors[anchor] = node
+ while not self.check_event(MappingEndEvent):
+ #key_event = self.peek_event()
+ item_key = self.compose_node(node, None)
+ #if item_key in node.value:
+ # raise ComposerError("while composing a mapping", start_event.start_mark,
+ # "found duplicate key", key_event.start_mark)
+ item_value = self.compose_node(node, item_key)
+ #node.value[item_key] = item_value
+ node.value.append((item_key, item_value))
+ end_event = self.get_event()
+ node.end_mark = end_event.end_mark
+ return node
+
diff --git a/third_party/python/PyYAML/lib/yaml/constructor.py b/third_party/python/PyYAML/lib/yaml/constructor.py
new file mode 100644
index 0000000000..619acd3070
--- /dev/null
+++ b/third_party/python/PyYAML/lib/yaml/constructor.py
@@ -0,0 +1,748 @@
+
+__all__ = [
+ 'BaseConstructor',
+ 'SafeConstructor',
+ 'FullConstructor',
+ 'UnsafeConstructor',
+ 'Constructor',
+ 'ConstructorError'
+]
+
+from .error import *
+from .nodes import *
+
+import collections.abc, datetime, base64, binascii, re, sys, types
+
+class ConstructorError(MarkedYAMLError):
+ pass
+
+class BaseConstructor:
+
+ yaml_constructors = {}
+ yaml_multi_constructors = {}
+
+ def __init__(self):
+ self.constructed_objects = {}
+ self.recursive_objects = {}
+ self.state_generators = []
+ self.deep_construct = False
+
+ def check_data(self):
+ # If there are more documents available?
+ return self.check_node()
+
+ def check_state_key(self, key):
+ """Block special attributes/methods from being set in a newly created
+ object, to prevent user-controlled methods from being called during
+ deserialization"""
+ if self.get_state_keys_blacklist_regexp().match(key):
+ raise ConstructorError(None, None,
+ "blacklisted key '%s' in instance state found" % (key,), None)
+
+ def get_data(self):
+ # Construct and return the next document.
+ if self.check_node():
+ return self.construct_document(self.get_node())
+
+ def get_single_data(self):
+ # Ensure that the stream contains a single document and construct it.
+ node = self.get_single_node()
+ if node is not None:
+ return self.construct_document(node)
+ return None
+
+ def construct_document(self, node):
+ data = self.construct_object(node)
+ while self.state_generators:
+ state_generators = self.state_generators
+ self.state_generators = []
+ for generator in state_generators:
+ for dummy in generator:
+ pass
+ self.constructed_objects = {}
+ self.recursive_objects = {}
+ self.deep_construct = False
+ return data
+
+ def construct_object(self, node, deep=False):
+ if node in self.constructed_objects:
+ return self.constructed_objects[node]
+ if deep:
+ old_deep = self.deep_construct
+ self.deep_construct = True
+ if node in self.recursive_objects:
+ raise ConstructorError(None, None,
+ "found unconstructable recursive node", node.start_mark)
+ self.recursive_objects[node] = None
+ constructor = None
+ tag_suffix = None
+ if node.tag in self.yaml_constructors:
+ constructor = self.yaml_constructors[node.tag]
+ else:
+ for tag_prefix in self.yaml_multi_constructors:
+ if tag_prefix is not None and node.tag.startswith(tag_prefix):
+ tag_suffix = node.tag[len(tag_prefix):]
+ constructor = self.yaml_multi_constructors[tag_prefix]
+ break
+ else:
+ if None in self.yaml_multi_constructors:
+ tag_suffix = node.tag
+ constructor = self.yaml_multi_constructors[None]
+ elif None in self.yaml_constructors:
+ constructor = self.yaml_constructors[None]
+ elif isinstance(node, ScalarNode):
+ constructor = self.__class__.construct_scalar
+ elif isinstance(node, SequenceNode):
+ constructor = self.__class__.construct_sequence
+ elif isinstance(node, MappingNode):
+ constructor = self.__class__.construct_mapping
+ if tag_suffix is None:
+ data = constructor(self, node)
+ else:
+ data = constructor(self, tag_suffix, node)
+ if isinstance(data, types.GeneratorType):
+ generator = data
+ data = next(generator)
+ if self.deep_construct:
+ for dummy in generator:
+ pass
+ else:
+ self.state_generators.append(generator)
+ self.constructed_objects[node] = data
+ del self.recursive_objects[node]
+ if deep:
+ self.deep_construct = old_deep
+ return data
+
+ def construct_scalar(self, node):
+ if not isinstance(node, ScalarNode):
+ raise ConstructorError(None, None,
+ "expected a scalar node, but found %s" % node.id,
+ node.start_mark)
+ return node.value
+
+ def construct_sequence(self, node, deep=False):
+ if not isinstance(node, SequenceNode):
+ raise ConstructorError(None, None,
+ "expected a sequence node, but found %s" % node.id,
+ node.start_mark)
+ return [self.construct_object(child, deep=deep)
+ for child in node.value]
+
+ def construct_mapping(self, node, deep=False):
+ if not isinstance(node, MappingNode):
+ raise ConstructorError(None, None,
+ "expected a mapping node, but found %s" % node.id,
+ node.start_mark)
+ mapping = {}
+ for key_node, value_node in node.value:
+ key = self.construct_object(key_node, deep=deep)
+ if not isinstance(key, collections.abc.Hashable):
+ raise ConstructorError("while constructing a mapping", node.start_mark,
+ "found unhashable key", key_node.start_mark)
+ value = self.construct_object(value_node, deep=deep)
+ mapping[key] = value
+ return mapping
+
+ def construct_pairs(self, node, deep=False):
+ if not isinstance(node, MappingNode):
+ raise ConstructorError(None, None,
+ "expected a mapping node, but found %s" % node.id,
+ node.start_mark)
+ pairs = []
+ for key_node, value_node in node.value:
+ key = self.construct_object(key_node, deep=deep)
+ value = self.construct_object(value_node, deep=deep)
+ pairs.append((key, value))
+ return pairs
+
+ @classmethod
+ def add_constructor(cls, tag, constructor):
+ if not 'yaml_constructors' in cls.__dict__:
+ cls.yaml_constructors = cls.yaml_constructors.copy()
+ cls.yaml_constructors[tag] = constructor
+
+ @classmethod
+ def add_multi_constructor(cls, tag_prefix, multi_constructor):
+ if not 'yaml_multi_constructors' in cls.__dict__:
+ cls.yaml_multi_constructors = cls.yaml_multi_constructors.copy()
+ cls.yaml_multi_constructors[tag_prefix] = multi_constructor
+
+class SafeConstructor(BaseConstructor):
+
+ def construct_scalar(self, node):
+ if isinstance(node, MappingNode):
+ for key_node, value_node in node.value:
+ if key_node.tag == 'tag:yaml.org,2002:value':
+ return self.construct_scalar(value_node)
+ return super().construct_scalar(node)
+
+ def flatten_mapping(self, node):
+ merge = []
+ index = 0
+ while index < len(node.value):
+ key_node, value_node = node.value[index]
+ if key_node.tag == 'tag:yaml.org,2002:merge':
+ del node.value[index]
+ if isinstance(value_node, MappingNode):
+ self.flatten_mapping(value_node)
+ merge.extend(value_node.value)
+ elif isinstance(value_node, SequenceNode):
+ submerge = []
+ for subnode in value_node.value:
+ if not isinstance(subnode, MappingNode):
+ raise ConstructorError("while constructing a mapping",
+ node.start_mark,
+ "expected a mapping for merging, but found %s"
+ % subnode.id, subnode.start_mark)
+ self.flatten_mapping(subnode)
+ submerge.append(subnode.value)
+ submerge.reverse()
+ for value in submerge:
+ merge.extend(value)
+ else:
+ raise ConstructorError("while constructing a mapping", node.start_mark,
+ "expected a mapping or list of mappings for merging, but found %s"
+ % value_node.id, value_node.start_mark)
+ elif key_node.tag == 'tag:yaml.org,2002:value':
+ key_node.tag = 'tag:yaml.org,2002:str'
+ index += 1
+ else:
+ index += 1
+ if merge:
+ node.value = merge + node.value
+
+ def construct_mapping(self, node, deep=False):
+ if isinstance(node, MappingNode):
+ self.flatten_mapping(node)
+ return super().construct_mapping(node, deep=deep)
+
+ def construct_yaml_null(self, node):
+ self.construct_scalar(node)
+ return None
+
+ bool_values = {
+ 'yes': True,
+ 'no': False,
+ 'true': True,
+ 'false': False,
+ 'on': True,
+ 'off': False,
+ }
+
+ def construct_yaml_bool(self, node):
+ value = self.construct_scalar(node)
+ return self.bool_values[value.lower()]
+
+ def construct_yaml_int(self, node):
+ value = self.construct_scalar(node)
+ value = value.replace('_', '')
+ sign = +1
+ if value[0] == '-':
+ sign = -1
+ if value[0] in '+-':
+ value = value[1:]
+ if value == '0':
+ return 0
+ elif value.startswith('0b'):
+ return sign*int(value[2:], 2)
+ elif value.startswith('0x'):
+ return sign*int(value[2:], 16)
+ elif value[0] == '0':
+ return sign*int(value, 8)
+ elif ':' in value:
+ digits = [int(part) for part in value.split(':')]
+ digits.reverse()
+ base = 1
+ value = 0
+ for digit in digits:
+ value += digit*base
+ base *= 60
+ return sign*value
+ else:
+ return sign*int(value)
+
+ inf_value = 1e300
+ while inf_value != inf_value*inf_value:
+ inf_value *= inf_value
+ nan_value = -inf_value/inf_value # Trying to make a quiet NaN (like C99).
+
+ def construct_yaml_float(self, node):
+ value = self.construct_scalar(node)
+ value = value.replace('_', '').lower()
+ sign = +1
+ if value[0] == '-':
+ sign = -1
+ if value[0] in '+-':
+ value = value[1:]
+ if value == '.inf':
+ return sign*self.inf_value
+ elif value == '.nan':
+ return self.nan_value
+ elif ':' in value:
+ digits = [float(part) for part in value.split(':')]
+ digits.reverse()
+ base = 1
+ value = 0.0
+ for digit in digits:
+ value += digit*base
+ base *= 60
+ return sign*value
+ else:
+ return sign*float(value)
+
+ def construct_yaml_binary(self, node):
+ try:
+ value = self.construct_scalar(node).encode('ascii')
+ except UnicodeEncodeError as exc:
+ raise ConstructorError(None, None,
+ "failed to convert base64 data into ascii: %s" % exc,
+ node.start_mark)
+ try:
+ if hasattr(base64, 'decodebytes'):
+ return base64.decodebytes(value)
+ else:
+ return base64.decodestring(value)
+ except binascii.Error as exc:
+ raise ConstructorError(None, None,
+ "failed to decode base64 data: %s" % exc, node.start_mark)
+
+ timestamp_regexp = re.compile(
+ r'''^(?P<year>[0-9][0-9][0-9][0-9])
+ -(?P<month>[0-9][0-9]?)
+ -(?P<day>[0-9][0-9]?)
+ (?:(?:[Tt]|[ \t]+)
+ (?P<hour>[0-9][0-9]?)
+ :(?P<minute>[0-9][0-9])
+ :(?P<second>[0-9][0-9])
+ (?:\.(?P<fraction>[0-9]*))?
+ (?:[ \t]*(?P<tz>Z|(?P<tz_sign>[-+])(?P<tz_hour>[0-9][0-9]?)
+ (?::(?P<tz_minute>[0-9][0-9]))?))?)?$''', re.X)
+
+ def construct_yaml_timestamp(self, node):
+ value = self.construct_scalar(node)
+ match = self.timestamp_regexp.match(node.value)
+ values = match.groupdict()
+ year = int(values['year'])
+ month = int(values['month'])
+ day = int(values['day'])
+ if not values['hour']:
+ return datetime.date(year, month, day)
+ hour = int(values['hour'])
+ minute = int(values['minute'])
+ second = int(values['second'])
+ fraction = 0
+ tzinfo = None
+ if values['fraction']:
+ fraction = values['fraction'][:6]
+ while len(fraction) < 6:
+ fraction += '0'
+ fraction = int(fraction)
+ if values['tz_sign']:
+ tz_hour = int(values['tz_hour'])
+ tz_minute = int(values['tz_minute'] or 0)
+ delta = datetime.timedelta(hours=tz_hour, minutes=tz_minute)
+ if values['tz_sign'] == '-':
+ delta = -delta
+ tzinfo = datetime.timezone(delta)
+ elif values['tz']:
+ tzinfo = datetime.timezone.utc
+ return datetime.datetime(year, month, day, hour, minute, second, fraction,
+ tzinfo=tzinfo)
+
+ def construct_yaml_omap(self, node):
+ # Note: we do not check for duplicate keys, because it's too
+ # CPU-expensive.
+ omap = []
+ yield omap
+ if not isinstance(node, SequenceNode):
+ raise ConstructorError("while constructing an ordered map", node.start_mark,
+ "expected a sequence, but found %s" % node.id, node.start_mark)
+ for subnode in node.value:
+ if not isinstance(subnode, MappingNode):
+ raise ConstructorError("while constructing an ordered map", node.start_mark,
+ "expected a mapping of length 1, but found %s" % subnode.id,
+ subnode.start_mark)
+ if len(subnode.value) != 1:
+ raise ConstructorError("while constructing an ordered map", node.start_mark,
+ "expected a single mapping item, but found %d items" % len(subnode.value),
+ subnode.start_mark)
+ key_node, value_node = subnode.value[0]
+ key = self.construct_object(key_node)
+ value = self.construct_object(value_node)
+ omap.append((key, value))
+
+ def construct_yaml_pairs(self, node):
+ # Note: the same code as `construct_yaml_omap`.
+ pairs = []
+ yield pairs
+ if not isinstance(node, SequenceNode):
+ raise ConstructorError("while constructing pairs", node.start_mark,
+ "expected a sequence, but found %s" % node.id, node.start_mark)
+ for subnode in node.value:
+ if not isinstance(subnode, MappingNode):
+ raise ConstructorError("while constructing pairs", node.start_mark,
+ "expected a mapping of length 1, but found %s" % subnode.id,
+ subnode.start_mark)
+ if len(subnode.value) != 1:
+ raise ConstructorError("while constructing pairs", node.start_mark,
+ "expected a single mapping item, but found %d items" % len(subnode.value),
+ subnode.start_mark)
+ key_node, value_node = subnode.value[0]
+ key = self.construct_object(key_node)
+ value = self.construct_object(value_node)
+ pairs.append((key, value))
+
+ def construct_yaml_set(self, node):
+ data = set()
+ yield data
+ value = self.construct_mapping(node)
+ data.update(value)
+
+ def construct_yaml_str(self, node):
+ return self.construct_scalar(node)
+
+ def construct_yaml_seq(self, node):
+ data = []
+ yield data
+ data.extend(self.construct_sequence(node))
+
+ def construct_yaml_map(self, node):
+ data = {}
+ yield data
+ value = self.construct_mapping(node)
+ data.update(value)
+
+ def construct_yaml_object(self, node, cls):
+ data = cls.__new__(cls)
+ yield data
+ if hasattr(data, '__setstate__'):
+ state = self.construct_mapping(node, deep=True)
+ data.__setstate__(state)
+ else:
+ state = self.construct_mapping(node)
+ data.__dict__.update(state)
+
+ def construct_undefined(self, node):
+ raise ConstructorError(None, None,
+ "could not determine a constructor for the tag %r" % node.tag,
+ node.start_mark)
+
+SafeConstructor.add_constructor(
+ 'tag:yaml.org,2002:null',
+ SafeConstructor.construct_yaml_null)
+
+SafeConstructor.add_constructor(
+ 'tag:yaml.org,2002:bool',
+ SafeConstructor.construct_yaml_bool)
+
+SafeConstructor.add_constructor(
+ 'tag:yaml.org,2002:int',
+ SafeConstructor.construct_yaml_int)
+
+SafeConstructor.add_constructor(
+ 'tag:yaml.org,2002:float',
+ SafeConstructor.construct_yaml_float)
+
+SafeConstructor.add_constructor(
+ 'tag:yaml.org,2002:binary',
+ SafeConstructor.construct_yaml_binary)
+
+SafeConstructor.add_constructor(
+ 'tag:yaml.org,2002:timestamp',
+ SafeConstructor.construct_yaml_timestamp)
+
+SafeConstructor.add_constructor(
+ 'tag:yaml.org,2002:omap',
+ SafeConstructor.construct_yaml_omap)
+
+SafeConstructor.add_constructor(
+ 'tag:yaml.org,2002:pairs',
+ SafeConstructor.construct_yaml_pairs)
+
+SafeConstructor.add_constructor(
+ 'tag:yaml.org,2002:set',
+ SafeConstructor.construct_yaml_set)
+
+SafeConstructor.add_constructor(
+ 'tag:yaml.org,2002:str',
+ SafeConstructor.construct_yaml_str)
+
+SafeConstructor.add_constructor(
+ 'tag:yaml.org,2002:seq',
+ SafeConstructor.construct_yaml_seq)
+
+SafeConstructor.add_constructor(
+ 'tag:yaml.org,2002:map',
+ SafeConstructor.construct_yaml_map)
+
+SafeConstructor.add_constructor(None,
+ SafeConstructor.construct_undefined)
+
+class FullConstructor(SafeConstructor):
+ # 'extend' is blacklisted because it is used by
+ # construct_python_object_apply to add `listitems` to a newly generate
+ # python instance
+ def get_state_keys_blacklist(self):
+ return ['^extend$', '^__.*__$']
+
+ def get_state_keys_blacklist_regexp(self):
+ if not hasattr(self, 'state_keys_blacklist_regexp'):
+ self.state_keys_blacklist_regexp = re.compile('(' + '|'.join(self.get_state_keys_blacklist()) + ')')
+ return self.state_keys_blacklist_regexp
+
+ def construct_python_str(self, node):
+ return self.construct_scalar(node)
+
+ def construct_python_unicode(self, node):
+ return self.construct_scalar(node)
+
+ def construct_python_bytes(self, node):
+ try:
+ value = self.construct_scalar(node).encode('ascii')
+ except UnicodeEncodeError as exc:
+ raise ConstructorError(None, None,
+ "failed to convert base64 data into ascii: %s" % exc,
+ node.start_mark)
+ try:
+ if hasattr(base64, 'decodebytes'):
+ return base64.decodebytes(value)
+ else:
+ return base64.decodestring(value)
+ except binascii.Error as exc:
+ raise ConstructorError(None, None,
+ "failed to decode base64 data: %s" % exc, node.start_mark)
+
+ def construct_python_long(self, node):
+ return self.construct_yaml_int(node)
+
+ def construct_python_complex(self, node):
+ return complex(self.construct_scalar(node))
+
+ def construct_python_tuple(self, node):
+ return tuple(self.construct_sequence(node))
+
+ def find_python_module(self, name, mark, unsafe=False):
+ if not name:
+ raise ConstructorError("while constructing a Python module", mark,
+ "expected non-empty name appended to the tag", mark)
+ if unsafe:
+ try:
+ __import__(name)
+ except ImportError as exc:
+ raise ConstructorError("while constructing a Python module", mark,
+ "cannot find module %r (%s)" % (name, exc), mark)
+ if name not in sys.modules:
+ raise ConstructorError("while constructing a Python module", mark,
+ "module %r is not imported" % name, mark)
+ return sys.modules[name]
+
+ def find_python_name(self, name, mark, unsafe=False):
+ if not name:
+ raise ConstructorError("while constructing a Python object", mark,
+ "expected non-empty name appended to the tag", mark)
+ if '.' in name:
+ module_name, object_name = name.rsplit('.', 1)
+ else:
+ module_name = 'builtins'
+ object_name = name
+ if unsafe:
+ try:
+ __import__(module_name)
+ except ImportError as exc:
+ raise ConstructorError("while constructing a Python object", mark,
+ "cannot find module %r (%s)" % (module_name, exc), mark)
+ if module_name not in sys.modules:
+ raise ConstructorError("while constructing a Python object", mark,
+ "module %r is not imported" % module_name, mark)
+ module = sys.modules[module_name]
+ if not hasattr(module, object_name):
+ raise ConstructorError("while constructing a Python object", mark,
+ "cannot find %r in the module %r"
+ % (object_name, module.__name__), mark)
+ return getattr(module, object_name)
+
+ def construct_python_name(self, suffix, node):
+ value = self.construct_scalar(node)
+ if value:
+ raise ConstructorError("while constructing a Python name", node.start_mark,
+ "expected the empty value, but found %r" % value, node.start_mark)
+ return self.find_python_name(suffix, node.start_mark)
+
+ def construct_python_module(self, suffix, node):
+ value = self.construct_scalar(node)
+ if value:
+ raise ConstructorError("while constructing a Python module", node.start_mark,
+ "expected the empty value, but found %r" % value, node.start_mark)
+ return self.find_python_module(suffix, node.start_mark)
+
+ def make_python_instance(self, suffix, node,
+ args=None, kwds=None, newobj=False, unsafe=False):
+ if not args:
+ args = []
+ if not kwds:
+ kwds = {}
+ cls = self.find_python_name(suffix, node.start_mark)
+ if not (unsafe or isinstance(cls, type)):
+ raise ConstructorError("while constructing a Python instance", node.start_mark,
+ "expected a class, but found %r" % type(cls),
+ node.start_mark)
+ if newobj and isinstance(cls, type):
+ return cls.__new__(cls, *args, **kwds)
+ else:
+ return cls(*args, **kwds)
+
+ def set_python_instance_state(self, instance, state, unsafe=False):
+ if hasattr(instance, '__setstate__'):
+ instance.__setstate__(state)
+ else:
+ slotstate = {}
+ if isinstance(state, tuple) and len(state) == 2:
+ state, slotstate = state
+ if hasattr(instance, '__dict__'):
+ if not unsafe and state:
+ for key in state.keys():
+ self.check_state_key(key)
+ instance.__dict__.update(state)
+ elif state:
+ slotstate.update(state)
+ for key, value in slotstate.items():
+ if not unsafe:
+ self.check_state_key(key)
+ setattr(instance, key, value)
+
+ def construct_python_object(self, suffix, node):
+ # Format:
+ # !!python/object:module.name { ... state ... }
+ instance = self.make_python_instance(suffix, node, newobj=True)
+ yield instance
+ deep = hasattr(instance, '__setstate__')
+ state = self.construct_mapping(node, deep=deep)
+ self.set_python_instance_state(instance, state)
+
+ def construct_python_object_apply(self, suffix, node, newobj=False):
+ # Format:
+ # !!python/object/apply # (or !!python/object/new)
+ # args: [ ... arguments ... ]
+ # kwds: { ... keywords ... }
+ # state: ... state ...
+ # listitems: [ ... listitems ... ]
+ # dictitems: { ... dictitems ... }
+ # or short format:
+ # !!python/object/apply [ ... arguments ... ]
+ # The difference between !!python/object/apply and !!python/object/new
+ # is how an object is created, check make_python_instance for details.
+ if isinstance(node, SequenceNode):
+ args = self.construct_sequence(node, deep=True)
+ kwds = {}
+ state = {}
+ listitems = []
+ dictitems = {}
+ else:
+ value = self.construct_mapping(node, deep=True)
+ args = value.get('args', [])
+ kwds = value.get('kwds', {})
+ state = value.get('state', {})
+ listitems = value.get('listitems', [])
+ dictitems = value.get('dictitems', {})
+ instance = self.make_python_instance(suffix, node, args, kwds, newobj)
+ if state:
+ self.set_python_instance_state(instance, state)
+ if listitems:
+ instance.extend(listitems)
+ if dictitems:
+ for key in dictitems:
+ instance[key] = dictitems[key]
+ return instance
+
+ def construct_python_object_new(self, suffix, node):
+ return self.construct_python_object_apply(suffix, node, newobj=True)
+
+FullConstructor.add_constructor(
+ 'tag:yaml.org,2002:python/none',
+ FullConstructor.construct_yaml_null)
+
+FullConstructor.add_constructor(
+ 'tag:yaml.org,2002:python/bool',
+ FullConstructor.construct_yaml_bool)
+
+FullConstructor.add_constructor(
+ 'tag:yaml.org,2002:python/str',
+ FullConstructor.construct_python_str)
+
+FullConstructor.add_constructor(
+ 'tag:yaml.org,2002:python/unicode',
+ FullConstructor.construct_python_unicode)
+
+FullConstructor.add_constructor(
+ 'tag:yaml.org,2002:python/bytes',
+ FullConstructor.construct_python_bytes)
+
+FullConstructor.add_constructor(
+ 'tag:yaml.org,2002:python/int',
+ FullConstructor.construct_yaml_int)
+
+FullConstructor.add_constructor(
+ 'tag:yaml.org,2002:python/long',
+ FullConstructor.construct_python_long)
+
+FullConstructor.add_constructor(
+ 'tag:yaml.org,2002:python/float',
+ FullConstructor.construct_yaml_float)
+
+FullConstructor.add_constructor(
+ 'tag:yaml.org,2002:python/complex',
+ FullConstructor.construct_python_complex)
+
+FullConstructor.add_constructor(
+ 'tag:yaml.org,2002:python/list',
+ FullConstructor.construct_yaml_seq)
+
+FullConstructor.add_constructor(
+ 'tag:yaml.org,2002:python/tuple',
+ FullConstructor.construct_python_tuple)
+
+FullConstructor.add_constructor(
+ 'tag:yaml.org,2002:python/dict',
+ FullConstructor.construct_yaml_map)
+
+FullConstructor.add_multi_constructor(
+ 'tag:yaml.org,2002:python/name:',
+ FullConstructor.construct_python_name)
+
+class UnsafeConstructor(FullConstructor):
+
+ def find_python_module(self, name, mark):
+ return super(UnsafeConstructor, self).find_python_module(name, mark, unsafe=True)
+
+ def find_python_name(self, name, mark):
+ return super(UnsafeConstructor, self).find_python_name(name, mark, unsafe=True)
+
+ def make_python_instance(self, suffix, node, args=None, kwds=None, newobj=False):
+ return super(UnsafeConstructor, self).make_python_instance(
+ suffix, node, args, kwds, newobj, unsafe=True)
+
+ def set_python_instance_state(self, instance, state):
+ return super(UnsafeConstructor, self).set_python_instance_state(
+ instance, state, unsafe=True)
+
+UnsafeConstructor.add_multi_constructor(
+ 'tag:yaml.org,2002:python/module:',
+ UnsafeConstructor.construct_python_module)
+
+UnsafeConstructor.add_multi_constructor(
+ 'tag:yaml.org,2002:python/object:',
+ UnsafeConstructor.construct_python_object)
+
+UnsafeConstructor.add_multi_constructor(
+ 'tag:yaml.org,2002:python/object/new:',
+ UnsafeConstructor.construct_python_object_new)
+
+UnsafeConstructor.add_multi_constructor(
+ 'tag:yaml.org,2002:python/object/apply:',
+ UnsafeConstructor.construct_python_object_apply)
+
+# Constructor is same as UnsafeConstructor. Need to leave this in place in case
+# people have extended it directly.
+class Constructor(UnsafeConstructor):
+ pass
diff --git a/third_party/python/PyYAML/lib/yaml/cyaml.py b/third_party/python/PyYAML/lib/yaml/cyaml.py
new file mode 100644
index 0000000000..0c21345879
--- /dev/null
+++ b/third_party/python/PyYAML/lib/yaml/cyaml.py
@@ -0,0 +1,101 @@
+
+__all__ = [
+ 'CBaseLoader', 'CSafeLoader', 'CFullLoader', 'CUnsafeLoader', 'CLoader',
+ 'CBaseDumper', 'CSafeDumper', 'CDumper'
+]
+
+from yaml._yaml import CParser, CEmitter
+
+from .constructor import *
+
+from .serializer import *
+from .representer import *
+
+from .resolver import *
+
+class CBaseLoader(CParser, BaseConstructor, BaseResolver):
+
+ def __init__(self, stream):
+ CParser.__init__(self, stream)
+ BaseConstructor.__init__(self)
+ BaseResolver.__init__(self)
+
+class CSafeLoader(CParser, SafeConstructor, Resolver):
+
+ def __init__(self, stream):
+ CParser.__init__(self, stream)
+ SafeConstructor.__init__(self)
+ Resolver.__init__(self)
+
+class CFullLoader(CParser, FullConstructor, Resolver):
+
+ def __init__(self, stream):
+ CParser.__init__(self, stream)
+ FullConstructor.__init__(self)
+ Resolver.__init__(self)
+
+class CUnsafeLoader(CParser, UnsafeConstructor, Resolver):
+
+ def __init__(self, stream):
+ CParser.__init__(self, stream)
+ UnsafeConstructor.__init__(self)
+ Resolver.__init__(self)
+
+class CLoader(CParser, Constructor, Resolver):
+
+ def __init__(self, stream):
+ CParser.__init__(self, stream)
+ Constructor.__init__(self)
+ Resolver.__init__(self)
+
+class CBaseDumper(CEmitter, BaseRepresenter, BaseResolver):
+
+ def __init__(self, stream,
+ default_style=None, default_flow_style=False,
+ canonical=None, indent=None, width=None,
+ allow_unicode=None, line_break=None,
+ encoding=None, explicit_start=None, explicit_end=None,
+ version=None, tags=None, sort_keys=True):
+ CEmitter.__init__(self, stream, canonical=canonical,
+ indent=indent, width=width, encoding=encoding,
+ allow_unicode=allow_unicode, line_break=line_break,
+ explicit_start=explicit_start, explicit_end=explicit_end,
+ version=version, tags=tags)
+ Representer.__init__(self, default_style=default_style,
+ default_flow_style=default_flow_style, sort_keys=sort_keys)
+ Resolver.__init__(self)
+
+class CSafeDumper(CEmitter, SafeRepresenter, Resolver):
+
+ def __init__(self, stream,
+ default_style=None, default_flow_style=False,
+ canonical=None, indent=None, width=None,
+ allow_unicode=None, line_break=None,
+ encoding=None, explicit_start=None, explicit_end=None,
+ version=None, tags=None, sort_keys=True):
+ CEmitter.__init__(self, stream, canonical=canonical,
+ indent=indent, width=width, encoding=encoding,
+ allow_unicode=allow_unicode, line_break=line_break,
+ explicit_start=explicit_start, explicit_end=explicit_end,
+ version=version, tags=tags)
+ SafeRepresenter.__init__(self, default_style=default_style,
+ default_flow_style=default_flow_style, sort_keys=sort_keys)
+ Resolver.__init__(self)
+
+class CDumper(CEmitter, Serializer, Representer, Resolver):
+
+ def __init__(self, stream,
+ default_style=None, default_flow_style=False,
+ canonical=None, indent=None, width=None,
+ allow_unicode=None, line_break=None,
+ encoding=None, explicit_start=None, explicit_end=None,
+ version=None, tags=None, sort_keys=True):
+ CEmitter.__init__(self, stream, canonical=canonical,
+ indent=indent, width=width, encoding=encoding,
+ allow_unicode=allow_unicode, line_break=line_break,
+ explicit_start=explicit_start, explicit_end=explicit_end,
+ version=version, tags=tags)
+ Representer.__init__(self, default_style=default_style,
+ default_flow_style=default_flow_style, sort_keys=sort_keys)
+ Resolver.__init__(self)
+
diff --git a/third_party/python/PyYAML/lib/yaml/dumper.py b/third_party/python/PyYAML/lib/yaml/dumper.py
new file mode 100644
index 0000000000..6aadba551f
--- /dev/null
+++ b/third_party/python/PyYAML/lib/yaml/dumper.py
@@ -0,0 +1,62 @@
+
+__all__ = ['BaseDumper', 'SafeDumper', 'Dumper']
+
+from .emitter import *
+from .serializer import *
+from .representer import *
+from .resolver import *
+
+class BaseDumper(Emitter, Serializer, BaseRepresenter, BaseResolver):
+
+ def __init__(self, stream,
+ default_style=None, default_flow_style=False,
+ canonical=None, indent=None, width=None,
+ allow_unicode=None, line_break=None,
+ encoding=None, explicit_start=None, explicit_end=None,
+ version=None, tags=None, sort_keys=True):
+ Emitter.__init__(self, stream, canonical=canonical,
+ indent=indent, width=width,
+ allow_unicode=allow_unicode, line_break=line_break)
+ Serializer.__init__(self, encoding=encoding,
+ explicit_start=explicit_start, explicit_end=explicit_end,
+ version=version, tags=tags)
+ Representer.__init__(self, default_style=default_style,
+ default_flow_style=default_flow_style, sort_keys=sort_keys)
+ Resolver.__init__(self)
+
+class SafeDumper(Emitter, Serializer, SafeRepresenter, Resolver):
+
+ def __init__(self, stream,
+ default_style=None, default_flow_style=False,
+ canonical=None, indent=None, width=None,
+ allow_unicode=None, line_break=None,
+ encoding=None, explicit_start=None, explicit_end=None,
+ version=None, tags=None, sort_keys=True):
+ Emitter.__init__(self, stream, canonical=canonical,
+ indent=indent, width=width,
+ allow_unicode=allow_unicode, line_break=line_break)
+ Serializer.__init__(self, encoding=encoding,
+ explicit_start=explicit_start, explicit_end=explicit_end,
+ version=version, tags=tags)
+ SafeRepresenter.__init__(self, default_style=default_style,
+ default_flow_style=default_flow_style, sort_keys=sort_keys)
+ Resolver.__init__(self)
+
+class Dumper(Emitter, Serializer, Representer, Resolver):
+
+ def __init__(self, stream,
+ default_style=None, default_flow_style=False,
+ canonical=None, indent=None, width=None,
+ allow_unicode=None, line_break=None,
+ encoding=None, explicit_start=None, explicit_end=None,
+ version=None, tags=None, sort_keys=True):
+ Emitter.__init__(self, stream, canonical=canonical,
+ indent=indent, width=width,
+ allow_unicode=allow_unicode, line_break=line_break)
+ Serializer.__init__(self, encoding=encoding,
+ explicit_start=explicit_start, explicit_end=explicit_end,
+ version=version, tags=tags)
+ Representer.__init__(self, default_style=default_style,
+ default_flow_style=default_flow_style, sort_keys=sort_keys)
+ Resolver.__init__(self)
+
diff --git a/third_party/python/PyYAML/lib/yaml/emitter.py b/third_party/python/PyYAML/lib/yaml/emitter.py
new file mode 100644
index 0000000000..a664d01116
--- /dev/null
+++ b/third_party/python/PyYAML/lib/yaml/emitter.py
@@ -0,0 +1,1137 @@
+
+# Emitter expects events obeying the following grammar:
+# stream ::= STREAM-START document* STREAM-END
+# document ::= DOCUMENT-START node DOCUMENT-END
+# node ::= SCALAR | sequence | mapping
+# sequence ::= SEQUENCE-START node* SEQUENCE-END
+# mapping ::= MAPPING-START (node node)* MAPPING-END
+
+__all__ = ['Emitter', 'EmitterError']
+
+from .error import YAMLError
+from .events import *
+
+class EmitterError(YAMLError):
+ pass
+
+class ScalarAnalysis:
+ def __init__(self, scalar, empty, multiline,
+ allow_flow_plain, allow_block_plain,
+ allow_single_quoted, allow_double_quoted,
+ allow_block):
+ self.scalar = scalar
+ self.empty = empty
+ self.multiline = multiline
+ self.allow_flow_plain = allow_flow_plain
+ self.allow_block_plain = allow_block_plain
+ self.allow_single_quoted = allow_single_quoted
+ self.allow_double_quoted = allow_double_quoted
+ self.allow_block = allow_block
+
+class Emitter:
+
+ DEFAULT_TAG_PREFIXES = {
+ '!' : '!',
+ 'tag:yaml.org,2002:' : '!!',
+ }
+
+ def __init__(self, stream, canonical=None, indent=None, width=None,
+ allow_unicode=None, line_break=None):
+
+ # The stream should have the methods `write` and possibly `flush`.
+ self.stream = stream
+
+ # Encoding can be overridden by STREAM-START.
+ self.encoding = None
+
+ # Emitter is a state machine with a stack of states to handle nested
+ # structures.
+ self.states = []
+ self.state = self.expect_stream_start
+
+ # Current event and the event queue.
+ self.events = []
+ self.event = None
+
+ # The current indentation level and the stack of previous indents.
+ self.indents = []
+ self.indent = None
+
+ # Flow level.
+ self.flow_level = 0
+
+ # Contexts.
+ self.root_context = False
+ self.sequence_context = False
+ self.mapping_context = False
+ self.simple_key_context = False
+
+ # Characteristics of the last emitted character:
+ # - current position.
+ # - is it a whitespace?
+ # - is it an indention character
+ # (indentation space, '-', '?', or ':')?
+ self.line = 0
+ self.column = 0
+ self.whitespace = True
+ self.indention = True
+
+ # Whether the document requires an explicit document indicator
+ self.open_ended = False
+
+ # Formatting details.
+ self.canonical = canonical
+ self.allow_unicode = allow_unicode
+ self.best_indent = 2
+ if indent and 1 < indent < 10:
+ self.best_indent = indent
+ self.best_width = 80
+ if width and width > self.best_indent*2:
+ self.best_width = width
+ self.best_line_break = '\n'
+ if line_break in ['\r', '\n', '\r\n']:
+ self.best_line_break = line_break
+
+ # Tag prefixes.
+ self.tag_prefixes = None
+
+ # Prepared anchor and tag.
+ self.prepared_anchor = None
+ self.prepared_tag = None
+
+ # Scalar analysis and style.
+ self.analysis = None
+ self.style = None
+
+ def dispose(self):
+ # Reset the state attributes (to clear self-references)
+ self.states = []
+ self.state = None
+
+ def emit(self, event):
+ self.events.append(event)
+ while not self.need_more_events():
+ self.event = self.events.pop(0)
+ self.state()
+ self.event = None
+
+ # In some cases, we wait for a few next events before emitting.
+
+ def need_more_events(self):
+ if not self.events:
+ return True
+ event = self.events[0]
+ if isinstance(event, DocumentStartEvent):
+ return self.need_events(1)
+ elif isinstance(event, SequenceStartEvent):
+ return self.need_events(2)
+ elif isinstance(event, MappingStartEvent):
+ return self.need_events(3)
+ else:
+ return False
+
+ def need_events(self, count):
+ level = 0
+ for event in self.events[1:]:
+ if isinstance(event, (DocumentStartEvent, CollectionStartEvent)):
+ level += 1
+ elif isinstance(event, (DocumentEndEvent, CollectionEndEvent)):
+ level -= 1
+ elif isinstance(event, StreamEndEvent):
+ level = -1
+ if level < 0:
+ return False
+ return (len(self.events) < count+1)
+
+ def increase_indent(self, flow=False, indentless=False):
+ self.indents.append(self.indent)
+ if self.indent is None:
+ if flow:
+ self.indent = self.best_indent
+ else:
+ self.indent = 0
+ elif not indentless:
+ self.indent += self.best_indent
+
+ # States.
+
+ # Stream handlers.
+
+ def expect_stream_start(self):
+ if isinstance(self.event, StreamStartEvent):
+ if self.event.encoding and not hasattr(self.stream, 'encoding'):
+ self.encoding = self.event.encoding
+ self.write_stream_start()
+ self.state = self.expect_first_document_start
+ else:
+ raise EmitterError("expected StreamStartEvent, but got %s"
+ % self.event)
+
+ def expect_nothing(self):
+ raise EmitterError("expected nothing, but got %s" % self.event)
+
+ # Document handlers.
+
+ def expect_first_document_start(self):
+ return self.expect_document_start(first=True)
+
+ def expect_document_start(self, first=False):
+ if isinstance(self.event, DocumentStartEvent):
+ if (self.event.version or self.event.tags) and self.open_ended:
+ self.write_indicator('...', True)
+ self.write_indent()
+ if self.event.version:
+ version_text = self.prepare_version(self.event.version)
+ self.write_version_directive(version_text)
+ self.tag_prefixes = self.DEFAULT_TAG_PREFIXES.copy()
+ if self.event.tags:
+ handles = sorted(self.event.tags.keys())
+ for handle in handles:
+ prefix = self.event.tags[handle]
+ self.tag_prefixes[prefix] = handle
+ handle_text = self.prepare_tag_handle(handle)
+ prefix_text = self.prepare_tag_prefix(prefix)
+ self.write_tag_directive(handle_text, prefix_text)
+ implicit = (first and not self.event.explicit and not self.canonical
+ and not self.event.version and not self.event.tags
+ and not self.check_empty_document())
+ if not implicit:
+ self.write_indent()
+ self.write_indicator('---', True)
+ if self.canonical:
+ self.write_indent()
+ self.state = self.expect_document_root
+ elif isinstance(self.event, StreamEndEvent):
+ if self.open_ended:
+ self.write_indicator('...', True)
+ self.write_indent()
+ self.write_stream_end()
+ self.state = self.expect_nothing
+ else:
+ raise EmitterError("expected DocumentStartEvent, but got %s"
+ % self.event)
+
+ def expect_document_end(self):
+ if isinstance(self.event, DocumentEndEvent):
+ self.write_indent()
+ if self.event.explicit:
+ self.write_indicator('...', True)
+ self.write_indent()
+ self.flush_stream()
+ self.state = self.expect_document_start
+ else:
+ raise EmitterError("expected DocumentEndEvent, but got %s"
+ % self.event)
+
+ def expect_document_root(self):
+ self.states.append(self.expect_document_end)
+ self.expect_node(root=True)
+
+ # Node handlers.
+
+ def expect_node(self, root=False, sequence=False, mapping=False,
+ simple_key=False):
+ self.root_context = root
+ self.sequence_context = sequence
+ self.mapping_context = mapping
+ self.simple_key_context = simple_key
+ if isinstance(self.event, AliasEvent):
+ self.expect_alias()
+ elif isinstance(self.event, (ScalarEvent, CollectionStartEvent)):
+ self.process_anchor('&')
+ self.process_tag()
+ if isinstance(self.event, ScalarEvent):
+ self.expect_scalar()
+ elif isinstance(self.event, SequenceStartEvent):
+ if self.flow_level or self.canonical or self.event.flow_style \
+ or self.check_empty_sequence():
+ self.expect_flow_sequence()
+ else:
+ self.expect_block_sequence()
+ elif isinstance(self.event, MappingStartEvent):
+ if self.flow_level or self.canonical or self.event.flow_style \
+ or self.check_empty_mapping():
+ self.expect_flow_mapping()
+ else:
+ self.expect_block_mapping()
+ else:
+ raise EmitterError("expected NodeEvent, but got %s" % self.event)
+
+ def expect_alias(self):
+ if self.event.anchor is None:
+ raise EmitterError("anchor is not specified for alias")
+ self.process_anchor('*')
+ self.state = self.states.pop()
+
+ def expect_scalar(self):
+ self.increase_indent(flow=True)
+ self.process_scalar()
+ self.indent = self.indents.pop()
+ self.state = self.states.pop()
+
+ # Flow sequence handlers.
+
+ def expect_flow_sequence(self):
+ self.write_indicator('[', True, whitespace=True)
+ self.flow_level += 1
+ self.increase_indent(flow=True)
+ self.state = self.expect_first_flow_sequence_item
+
+ def expect_first_flow_sequence_item(self):
+ if isinstance(self.event, SequenceEndEvent):
+ self.indent = self.indents.pop()
+ self.flow_level -= 1
+ self.write_indicator(']', False)
+ self.state = self.states.pop()
+ else:
+ if self.canonical or self.column > self.best_width:
+ self.write_indent()
+ self.states.append(self.expect_flow_sequence_item)
+ self.expect_node(sequence=True)
+
+ def expect_flow_sequence_item(self):
+ if isinstance(self.event, SequenceEndEvent):
+ self.indent = self.indents.pop()
+ self.flow_level -= 1
+ if self.canonical:
+ self.write_indicator(',', False)
+ self.write_indent()
+ self.write_indicator(']', False)
+ self.state = self.states.pop()
+ else:
+ self.write_indicator(',', False)
+ if self.canonical or self.column > self.best_width:
+ self.write_indent()
+ self.states.append(self.expect_flow_sequence_item)
+ self.expect_node(sequence=True)
+
+ # Flow mapping handlers.
+
+ def expect_flow_mapping(self):
+ self.write_indicator('{', True, whitespace=True)
+ self.flow_level += 1
+ self.increase_indent(flow=True)
+ self.state = self.expect_first_flow_mapping_key
+
+ def expect_first_flow_mapping_key(self):
+ if isinstance(self.event, MappingEndEvent):
+ self.indent = self.indents.pop()
+ self.flow_level -= 1
+ self.write_indicator('}', False)
+ self.state = self.states.pop()
+ else:
+ if self.canonical or self.column > self.best_width:
+ self.write_indent()
+ if not self.canonical and self.check_simple_key():
+ self.states.append(self.expect_flow_mapping_simple_value)
+ self.expect_node(mapping=True, simple_key=True)
+ else:
+ self.write_indicator('?', True)
+ self.states.append(self.expect_flow_mapping_value)
+ self.expect_node(mapping=True)
+
+ def expect_flow_mapping_key(self):
+ if isinstance(self.event, MappingEndEvent):
+ self.indent = self.indents.pop()
+ self.flow_level -= 1
+ if self.canonical:
+ self.write_indicator(',', False)
+ self.write_indent()
+ self.write_indicator('}', False)
+ self.state = self.states.pop()
+ else:
+ self.write_indicator(',', False)
+ if self.canonical or self.column > self.best_width:
+ self.write_indent()
+ if not self.canonical and self.check_simple_key():
+ self.states.append(self.expect_flow_mapping_simple_value)
+ self.expect_node(mapping=True, simple_key=True)
+ else:
+ self.write_indicator('?', True)
+ self.states.append(self.expect_flow_mapping_value)
+ self.expect_node(mapping=True)
+
+ def expect_flow_mapping_simple_value(self):
+ self.write_indicator(':', False)
+ self.states.append(self.expect_flow_mapping_key)
+ self.expect_node(mapping=True)
+
+ def expect_flow_mapping_value(self):
+ if self.canonical or self.column > self.best_width:
+ self.write_indent()
+ self.write_indicator(':', True)
+ self.states.append(self.expect_flow_mapping_key)
+ self.expect_node(mapping=True)
+
+ # Block sequence handlers.
+
+ def expect_block_sequence(self):
+ indentless = (self.mapping_context and not self.indention)
+ self.increase_indent(flow=False, indentless=indentless)
+ self.state = self.expect_first_block_sequence_item
+
+ def expect_first_block_sequence_item(self):
+ return self.expect_block_sequence_item(first=True)
+
+ def expect_block_sequence_item(self, first=False):
+ if not first and isinstance(self.event, SequenceEndEvent):
+ self.indent = self.indents.pop()
+ self.state = self.states.pop()
+ else:
+ self.write_indent()
+ self.write_indicator('-', True, indention=True)
+ self.states.append(self.expect_block_sequence_item)
+ self.expect_node(sequence=True)
+
+ # Block mapping handlers.
+
+ def expect_block_mapping(self):
+ self.increase_indent(flow=False)
+ self.state = self.expect_first_block_mapping_key
+
+ def expect_first_block_mapping_key(self):
+ return self.expect_block_mapping_key(first=True)
+
+ def expect_block_mapping_key(self, first=False):
+ if not first and isinstance(self.event, MappingEndEvent):
+ self.indent = self.indents.pop()
+ self.state = self.states.pop()
+ else:
+ self.write_indent()
+ if self.check_simple_key():
+ self.states.append(self.expect_block_mapping_simple_value)
+ self.expect_node(mapping=True, simple_key=True)
+ else:
+ self.write_indicator('?', True, indention=True)
+ self.states.append(self.expect_block_mapping_value)
+ self.expect_node(mapping=True)
+
+ def expect_block_mapping_simple_value(self):
+ self.write_indicator(':', False)
+ self.states.append(self.expect_block_mapping_key)
+ self.expect_node(mapping=True)
+
+ def expect_block_mapping_value(self):
+ self.write_indent()
+ self.write_indicator(':', True, indention=True)
+ self.states.append(self.expect_block_mapping_key)
+ self.expect_node(mapping=True)
+
+ # Checkers.
+
+ def check_empty_sequence(self):
+ return (isinstance(self.event, SequenceStartEvent) and self.events
+ and isinstance(self.events[0], SequenceEndEvent))
+
+ def check_empty_mapping(self):
+ return (isinstance(self.event, MappingStartEvent) and self.events
+ and isinstance(self.events[0], MappingEndEvent))
+
+ def check_empty_document(self):
+ if not isinstance(self.event, DocumentStartEvent) or not self.events:
+ return False
+ event = self.events[0]
+ return (isinstance(event, ScalarEvent) and event.anchor is None
+ and event.tag is None and event.implicit and event.value == '')
+
+ def check_simple_key(self):
+ length = 0
+ if isinstance(self.event, NodeEvent) and self.event.anchor is not None:
+ if self.prepared_anchor is None:
+ self.prepared_anchor = self.prepare_anchor(self.event.anchor)
+ length += len(self.prepared_anchor)
+ if isinstance(self.event, (ScalarEvent, CollectionStartEvent)) \
+ and self.event.tag is not None:
+ if self.prepared_tag is None:
+ self.prepared_tag = self.prepare_tag(self.event.tag)
+ length += len(self.prepared_tag)
+ if isinstance(self.event, ScalarEvent):
+ if self.analysis is None:
+ self.analysis = self.analyze_scalar(self.event.value)
+ length += len(self.analysis.scalar)
+ return (length < 128 and (isinstance(self.event, AliasEvent)
+ or (isinstance(self.event, ScalarEvent)
+ and not self.analysis.empty and not self.analysis.multiline)
+ or self.check_empty_sequence() or self.check_empty_mapping()))
+
+ # Anchor, Tag, and Scalar processors.
+
+ def process_anchor(self, indicator):
+ if self.event.anchor is None:
+ self.prepared_anchor = None
+ return
+ if self.prepared_anchor is None:
+ self.prepared_anchor = self.prepare_anchor(self.event.anchor)
+ if self.prepared_anchor:
+ self.write_indicator(indicator+self.prepared_anchor, True)
+ self.prepared_anchor = None
+
+ def process_tag(self):
+ tag = self.event.tag
+ if isinstance(self.event, ScalarEvent):
+ if self.style is None:
+ self.style = self.choose_scalar_style()
+ if ((not self.canonical or tag is None) and
+ ((self.style == '' and self.event.implicit[0])
+ or (self.style != '' and self.event.implicit[1]))):
+ self.prepared_tag = None
+ return
+ if self.event.implicit[0] and tag is None:
+ tag = '!'
+ self.prepared_tag = None
+ else:
+ if (not self.canonical or tag is None) and self.event.implicit:
+ self.prepared_tag = None
+ return
+ if tag is None:
+ raise EmitterError("tag is not specified")
+ if self.prepared_tag is None:
+ self.prepared_tag = self.prepare_tag(tag)
+ if self.prepared_tag:
+ self.write_indicator(self.prepared_tag, True)
+ self.prepared_tag = None
+
+ def choose_scalar_style(self):
+ if self.analysis is None:
+ self.analysis = self.analyze_scalar(self.event.value)
+ if self.event.style == '"' or self.canonical:
+ return '"'
+ if not self.event.style and self.event.implicit[0]:
+ if (not (self.simple_key_context and
+ (self.analysis.empty or self.analysis.multiline))
+ and (self.flow_level and self.analysis.allow_flow_plain
+ or (not self.flow_level and self.analysis.allow_block_plain))):
+ return ''
+ if self.event.style and self.event.style in '|>':
+ if (not self.flow_level and not self.simple_key_context
+ and self.analysis.allow_block):
+ return self.event.style
+ if not self.event.style or self.event.style == '\'':
+ if (self.analysis.allow_single_quoted and
+ not (self.simple_key_context and self.analysis.multiline)):
+ return '\''
+ return '"'
+
+ def process_scalar(self):
+ if self.analysis is None:
+ self.analysis = self.analyze_scalar(self.event.value)
+ if self.style is None:
+ self.style = self.choose_scalar_style()
+ split = (not self.simple_key_context)
+ #if self.analysis.multiline and split \
+ # and (not self.style or self.style in '\'\"'):
+ # self.write_indent()
+ if self.style == '"':
+ self.write_double_quoted(self.analysis.scalar, split)
+ elif self.style == '\'':
+ self.write_single_quoted(self.analysis.scalar, split)
+ elif self.style == '>':
+ self.write_folded(self.analysis.scalar)
+ elif self.style == '|':
+ self.write_literal(self.analysis.scalar)
+ else:
+ self.write_plain(self.analysis.scalar, split)
+ self.analysis = None
+ self.style = None
+
+ # Analyzers.
+
+ def prepare_version(self, version):
+ major, minor = version
+ if major != 1:
+ raise EmitterError("unsupported YAML version: %d.%d" % (major, minor))
+ return '%d.%d' % (major, minor)
+
+ def prepare_tag_handle(self, handle):
+ if not handle:
+ raise EmitterError("tag handle must not be empty")
+ if handle[0] != '!' or handle[-1] != '!':
+ raise EmitterError("tag handle must start and end with '!': %r" % handle)
+ for ch in handle[1:-1]:
+ if not ('0' <= ch <= '9' or 'A' <= ch <= 'Z' or 'a' <= ch <= 'z' \
+ or ch in '-_'):
+ raise EmitterError("invalid character %r in the tag handle: %r"
+ % (ch, handle))
+ return handle
+
+ def prepare_tag_prefix(self, prefix):
+ if not prefix:
+ raise EmitterError("tag prefix must not be empty")
+ chunks = []
+ start = end = 0
+ if prefix[0] == '!':
+ end = 1
+ while end < len(prefix):
+ ch = prefix[end]
+ if '0' <= ch <= '9' or 'A' <= ch <= 'Z' or 'a' <= ch <= 'z' \
+ or ch in '-;/?!:@&=+$,_.~*\'()[]':
+ end += 1
+ else:
+ if start < end:
+ chunks.append(prefix[start:end])
+ start = end = end+1
+ data = ch.encode('utf-8')
+ for ch in data:
+ chunks.append('%%%02X' % ord(ch))
+ if start < end:
+ chunks.append(prefix[start:end])
+ return ''.join(chunks)
+
+ def prepare_tag(self, tag):
+ if not tag:
+ raise EmitterError("tag must not be empty")
+ if tag == '!':
+ return tag
+ handle = None
+ suffix = tag
+ prefixes = sorted(self.tag_prefixes.keys())
+ for prefix in prefixes:
+ if tag.startswith(prefix) \
+ and (prefix == '!' or len(prefix) < len(tag)):
+ handle = self.tag_prefixes[prefix]
+ suffix = tag[len(prefix):]
+ chunks = []
+ start = end = 0
+ while end < len(suffix):
+ ch = suffix[end]
+ if '0' <= ch <= '9' or 'A' <= ch <= 'Z' or 'a' <= ch <= 'z' \
+ or ch in '-;/?:@&=+$,_.~*\'()[]' \
+ or (ch == '!' and handle != '!'):
+ end += 1
+ else:
+ if start < end:
+ chunks.append(suffix[start:end])
+ start = end = end+1
+ data = ch.encode('utf-8')
+ for ch in data:
+ chunks.append('%%%02X' % ch)
+ if start < end:
+ chunks.append(suffix[start:end])
+ suffix_text = ''.join(chunks)
+ if handle:
+ return '%s%s' % (handle, suffix_text)
+ else:
+ return '!<%s>' % suffix_text
+
+ def prepare_anchor(self, anchor):
+ if not anchor:
+ raise EmitterError("anchor must not be empty")
+ for ch in anchor:
+ if not ('0' <= ch <= '9' or 'A' <= ch <= 'Z' or 'a' <= ch <= 'z' \
+ or ch in '-_'):
+ raise EmitterError("invalid character %r in the anchor: %r"
+ % (ch, anchor))
+ return anchor
+
+ def analyze_scalar(self, scalar):
+
+ # Empty scalar is a special case.
+ if not scalar:
+ return ScalarAnalysis(scalar=scalar, empty=True, multiline=False,
+ allow_flow_plain=False, allow_block_plain=True,
+ allow_single_quoted=True, allow_double_quoted=True,
+ allow_block=False)
+
+ # Indicators and special characters.
+ block_indicators = False
+ flow_indicators = False
+ line_breaks = False
+ special_characters = False
+
+ # Important whitespace combinations.
+ leading_space = False
+ leading_break = False
+ trailing_space = False
+ trailing_break = False
+ break_space = False
+ space_break = False
+
+ # Check document indicators.
+ if scalar.startswith('---') or scalar.startswith('...'):
+ block_indicators = True
+ flow_indicators = True
+
+ # First character or preceded by a whitespace.
+ preceded_by_whitespace = True
+
+ # Last character or followed by a whitespace.
+ followed_by_whitespace = (len(scalar) == 1 or
+ scalar[1] in '\0 \t\r\n\x85\u2028\u2029')
+
+ # The previous character is a space.
+ previous_space = False
+
+ # The previous character is a break.
+ previous_break = False
+
+ index = 0
+ while index < len(scalar):
+ ch = scalar[index]
+
+ # Check for indicators.
+ if index == 0:
+ # Leading indicators are special characters.
+ if ch in '#,[]{}&*!|>\'\"%@`':
+ flow_indicators = True
+ block_indicators = True
+ if ch in '?:':
+ flow_indicators = True
+ if followed_by_whitespace:
+ block_indicators = True
+ if ch == '-' and followed_by_whitespace:
+ flow_indicators = True
+ block_indicators = True
+ else:
+ # Some indicators cannot appear within a scalar as well.
+ if ch in ',?[]{}':
+ flow_indicators = True
+ if ch == ':':
+ flow_indicators = True
+ if followed_by_whitespace:
+ block_indicators = True
+ if ch == '#' and preceded_by_whitespace:
+ flow_indicators = True
+ block_indicators = True
+
+ # Check for line breaks, special, and unicode characters.
+ if ch in '\n\x85\u2028\u2029':
+ line_breaks = True
+ if not (ch == '\n' or '\x20' <= ch <= '\x7E'):
+ if (ch == '\x85' or '\xA0' <= ch <= '\uD7FF'
+ or '\uE000' <= ch <= '\uFFFD'
+ or '\U00010000' <= ch < '\U0010ffff') and ch != '\uFEFF':
+ unicode_characters = True
+ if not self.allow_unicode:
+ special_characters = True
+ else:
+ special_characters = True
+
+ # Detect important whitespace combinations.
+ if ch == ' ':
+ if index == 0:
+ leading_space = True
+ if index == len(scalar)-1:
+ trailing_space = True
+ if previous_break:
+ break_space = True
+ previous_space = True
+ previous_break = False
+ elif ch in '\n\x85\u2028\u2029':
+ if index == 0:
+ leading_break = True
+ if index == len(scalar)-1:
+ trailing_break = True
+ if previous_space:
+ space_break = True
+ previous_space = False
+ previous_break = True
+ else:
+ previous_space = False
+ previous_break = False
+
+ # Prepare for the next character.
+ index += 1
+ preceded_by_whitespace = (ch in '\0 \t\r\n\x85\u2028\u2029')
+ followed_by_whitespace = (index+1 >= len(scalar) or
+ scalar[index+1] in '\0 \t\r\n\x85\u2028\u2029')
+
+ # Let's decide what styles are allowed.
+ allow_flow_plain = True
+ allow_block_plain = True
+ allow_single_quoted = True
+ allow_double_quoted = True
+ allow_block = True
+
+ # Leading and trailing whitespaces are bad for plain scalars.
+ if (leading_space or leading_break
+ or trailing_space or trailing_break):
+ allow_flow_plain = allow_block_plain = False
+
+ # We do not permit trailing spaces for block scalars.
+ if trailing_space:
+ allow_block = False
+
+ # Spaces at the beginning of a new line are only acceptable for block
+ # scalars.
+ if break_space:
+ allow_flow_plain = allow_block_plain = allow_single_quoted = False
+
+ # Spaces followed by breaks, as well as special character are only
+ # allowed for double quoted scalars.
+ if space_break or special_characters:
+ allow_flow_plain = allow_block_plain = \
+ allow_single_quoted = allow_block = False
+
+ # Although the plain scalar writer supports breaks, we never emit
+ # multiline plain scalars.
+ if line_breaks:
+ allow_flow_plain = allow_block_plain = False
+
+ # Flow indicators are forbidden for flow plain scalars.
+ if flow_indicators:
+ allow_flow_plain = False
+
+ # Block indicators are forbidden for block plain scalars.
+ if block_indicators:
+ allow_block_plain = False
+
+ return ScalarAnalysis(scalar=scalar,
+ empty=False, multiline=line_breaks,
+ allow_flow_plain=allow_flow_plain,
+ allow_block_plain=allow_block_plain,
+ allow_single_quoted=allow_single_quoted,
+ allow_double_quoted=allow_double_quoted,
+ allow_block=allow_block)
+
+ # Writers.
+
+ def flush_stream(self):
+ if hasattr(self.stream, 'flush'):
+ self.stream.flush()
+
+ def write_stream_start(self):
+ # Write BOM if needed.
+ if self.encoding and self.encoding.startswith('utf-16'):
+ self.stream.write('\uFEFF'.encode(self.encoding))
+
+ def write_stream_end(self):
+ self.flush_stream()
+
+ def write_indicator(self, indicator, need_whitespace,
+ whitespace=False, indention=False):
+ if self.whitespace or not need_whitespace:
+ data = indicator
+ else:
+ data = ' '+indicator
+ self.whitespace = whitespace
+ self.indention = self.indention and indention
+ self.column += len(data)
+ self.open_ended = False
+ if self.encoding:
+ data = data.encode(self.encoding)
+ self.stream.write(data)
+
+ def write_indent(self):
+ indent = self.indent or 0
+ if not self.indention or self.column > indent \
+ or (self.column == indent and not self.whitespace):
+ self.write_line_break()
+ if self.column < indent:
+ self.whitespace = True
+ data = ' '*(indent-self.column)
+ self.column = indent
+ if self.encoding:
+ data = data.encode(self.encoding)
+ self.stream.write(data)
+
+ def write_line_break(self, data=None):
+ if data is None:
+ data = self.best_line_break
+ self.whitespace = True
+ self.indention = True
+ self.line += 1
+ self.column = 0
+ if self.encoding:
+ data = data.encode(self.encoding)
+ self.stream.write(data)
+
+ def write_version_directive(self, version_text):
+ data = '%%YAML %s' % version_text
+ if self.encoding:
+ data = data.encode(self.encoding)
+ self.stream.write(data)
+ self.write_line_break()
+
+ def write_tag_directive(self, handle_text, prefix_text):
+ data = '%%TAG %s %s' % (handle_text, prefix_text)
+ if self.encoding:
+ data = data.encode(self.encoding)
+ self.stream.write(data)
+ self.write_line_break()
+
+ # Scalar streams.
+
+ def write_single_quoted(self, text, split=True):
+ self.write_indicator('\'', True)
+ spaces = False
+ breaks = False
+ start = end = 0
+ while end <= len(text):
+ ch = None
+ if end < len(text):
+ ch = text[end]
+ if spaces:
+ if ch is None or ch != ' ':
+ if start+1 == end and self.column > self.best_width and split \
+ and start != 0 and end != len(text):
+ self.write_indent()
+ else:
+ data = text[start:end]
+ self.column += len(data)
+ if self.encoding:
+ data = data.encode(self.encoding)
+ self.stream.write(data)
+ start = end
+ elif breaks:
+ if ch is None or ch not in '\n\x85\u2028\u2029':
+ if text[start] == '\n':
+ self.write_line_break()
+ for br in text[start:end]:
+ if br == '\n':
+ self.write_line_break()
+ else:
+ self.write_line_break(br)
+ self.write_indent()
+ start = end
+ else:
+ if ch is None or ch in ' \n\x85\u2028\u2029' or ch == '\'':
+ if start < end:
+ data = text[start:end]
+ self.column += len(data)
+ if self.encoding:
+ data = data.encode(self.encoding)
+ self.stream.write(data)
+ start = end
+ if ch == '\'':
+ data = '\'\''
+ self.column += 2
+ if self.encoding:
+ data = data.encode(self.encoding)
+ self.stream.write(data)
+ start = end + 1
+ if ch is not None:
+ spaces = (ch == ' ')
+ breaks = (ch in '\n\x85\u2028\u2029')
+ end += 1
+ self.write_indicator('\'', False)
+
+ ESCAPE_REPLACEMENTS = {
+ '\0': '0',
+ '\x07': 'a',
+ '\x08': 'b',
+ '\x09': 't',
+ '\x0A': 'n',
+ '\x0B': 'v',
+ '\x0C': 'f',
+ '\x0D': 'r',
+ '\x1B': 'e',
+ '\"': '\"',
+ '\\': '\\',
+ '\x85': 'N',
+ '\xA0': '_',
+ '\u2028': 'L',
+ '\u2029': 'P',
+ }
+
+ def write_double_quoted(self, text, split=True):
+ self.write_indicator('"', True)
+ start = end = 0
+ while end <= len(text):
+ ch = None
+ if end < len(text):
+ ch = text[end]
+ if ch is None or ch in '"\\\x85\u2028\u2029\uFEFF' \
+ or not ('\x20' <= ch <= '\x7E'
+ or (self.allow_unicode
+ and ('\xA0' <= ch <= '\uD7FF'
+ or '\uE000' <= ch <= '\uFFFD'))):
+ if start < end:
+ data = text[start:end]
+ self.column += len(data)
+ if self.encoding:
+ data = data.encode(self.encoding)
+ self.stream.write(data)
+ start = end
+ if ch is not None:
+ if ch in self.ESCAPE_REPLACEMENTS:
+ data = '\\'+self.ESCAPE_REPLACEMENTS[ch]
+ elif ch <= '\xFF':
+ data = '\\x%02X' % ord(ch)
+ elif ch <= '\uFFFF':
+ data = '\\u%04X' % ord(ch)
+ else:
+ data = '\\U%08X' % ord(ch)
+ self.column += len(data)
+ if self.encoding:
+ data = data.encode(self.encoding)
+ self.stream.write(data)
+ start = end+1
+ if 0 < end < len(text)-1 and (ch == ' ' or start >= end) \
+ and self.column+(end-start) > self.best_width and split:
+ data = text[start:end]+'\\'
+ if start < end:
+ start = end
+ self.column += len(data)
+ if self.encoding:
+ data = data.encode(self.encoding)
+ self.stream.write(data)
+ self.write_indent()
+ self.whitespace = False
+ self.indention = False
+ if text[start] == ' ':
+ data = '\\'
+ self.column += len(data)
+ if self.encoding:
+ data = data.encode(self.encoding)
+ self.stream.write(data)
+ end += 1
+ self.write_indicator('"', False)
+
+ def determine_block_hints(self, text):
+ hints = ''
+ if text:
+ if text[0] in ' \n\x85\u2028\u2029':
+ hints += str(self.best_indent)
+ if text[-1] not in '\n\x85\u2028\u2029':
+ hints += '-'
+ elif len(text) == 1 or text[-2] in '\n\x85\u2028\u2029':
+ hints += '+'
+ return hints
+
+ def write_folded(self, text):
+ hints = self.determine_block_hints(text)
+ self.write_indicator('>'+hints, True)
+ if hints[-1:] == '+':
+ self.open_ended = True
+ self.write_line_break()
+ leading_space = True
+ spaces = False
+ breaks = True
+ start = end = 0
+ while end <= len(text):
+ ch = None
+ if end < len(text):
+ ch = text[end]
+ if breaks:
+ if ch is None or ch not in '\n\x85\u2028\u2029':
+ if not leading_space and ch is not None and ch != ' ' \
+ and text[start] == '\n':
+ self.write_line_break()
+ leading_space = (ch == ' ')
+ for br in text[start:end]:
+ if br == '\n':
+ self.write_line_break()
+ else:
+ self.write_line_break(br)
+ if ch is not None:
+ self.write_indent()
+ start = end
+ elif spaces:
+ if ch != ' ':
+ if start+1 == end and self.column > self.best_width:
+ self.write_indent()
+ else:
+ data = text[start:end]
+ self.column += len(data)
+ if self.encoding:
+ data = data.encode(self.encoding)
+ self.stream.write(data)
+ start = end
+ else:
+ if ch is None or ch in ' \n\x85\u2028\u2029':
+ data = text[start:end]
+ self.column += len(data)
+ if self.encoding:
+ data = data.encode(self.encoding)
+ self.stream.write(data)
+ if ch is None:
+ self.write_line_break()
+ start = end
+ if ch is not None:
+ breaks = (ch in '\n\x85\u2028\u2029')
+ spaces = (ch == ' ')
+ end += 1
+
+ def write_literal(self, text):
+ hints = self.determine_block_hints(text)
+ self.write_indicator('|'+hints, True)
+ if hints[-1:] == '+':
+ self.open_ended = True
+ self.write_line_break()
+ breaks = True
+ start = end = 0
+ while end <= len(text):
+ ch = None
+ if end < len(text):
+ ch = text[end]
+ if breaks:
+ if ch is None or ch not in '\n\x85\u2028\u2029':
+ for br in text[start:end]:
+ if br == '\n':
+ self.write_line_break()
+ else:
+ self.write_line_break(br)
+ if ch is not None:
+ self.write_indent()
+ start = end
+ else:
+ if ch is None or ch in '\n\x85\u2028\u2029':
+ data = text[start:end]
+ if self.encoding:
+ data = data.encode(self.encoding)
+ self.stream.write(data)
+ if ch is None:
+ self.write_line_break()
+ start = end
+ if ch is not None:
+ breaks = (ch in '\n\x85\u2028\u2029')
+ end += 1
+
+ def write_plain(self, text, split=True):
+ if self.root_context:
+ self.open_ended = True
+ if not text:
+ return
+ if not self.whitespace:
+ data = ' '
+ self.column += len(data)
+ if self.encoding:
+ data = data.encode(self.encoding)
+ self.stream.write(data)
+ self.whitespace = False
+ self.indention = False
+ spaces = False
+ breaks = False
+ start = end = 0
+ while end <= len(text):
+ ch = None
+ if end < len(text):
+ ch = text[end]
+ if spaces:
+ if ch != ' ':
+ if start+1 == end and self.column > self.best_width and split:
+ self.write_indent()
+ self.whitespace = False
+ self.indention = False
+ else:
+ data = text[start:end]
+ self.column += len(data)
+ if self.encoding:
+ data = data.encode(self.encoding)
+ self.stream.write(data)
+ start = end
+ elif breaks:
+ if ch not in '\n\x85\u2028\u2029':
+ if text[start] == '\n':
+ self.write_line_break()
+ for br in text[start:end]:
+ if br == '\n':
+ self.write_line_break()
+ else:
+ self.write_line_break(br)
+ self.write_indent()
+ self.whitespace = False
+ self.indention = False
+ start = end
+ else:
+ if ch is None or ch in ' \n\x85\u2028\u2029':
+ data = text[start:end]
+ self.column += len(data)
+ if self.encoding:
+ data = data.encode(self.encoding)
+ self.stream.write(data)
+ start = end
+ if ch is not None:
+ spaces = (ch == ' ')
+ breaks = (ch in '\n\x85\u2028\u2029')
+ end += 1
diff --git a/third_party/python/PyYAML/lib/yaml/error.py b/third_party/python/PyYAML/lib/yaml/error.py
new file mode 100644
index 0000000000..b796b4dc51
--- /dev/null
+++ b/third_party/python/PyYAML/lib/yaml/error.py
@@ -0,0 +1,75 @@
+
+__all__ = ['Mark', 'YAMLError', 'MarkedYAMLError']
+
+class Mark:
+
+ def __init__(self, name, index, line, column, buffer, pointer):
+ self.name = name
+ self.index = index
+ self.line = line
+ self.column = column
+ self.buffer = buffer
+ self.pointer = pointer
+
+ def get_snippet(self, indent=4, max_length=75):
+ if self.buffer is None:
+ return None
+ head = ''
+ start = self.pointer
+ while start > 0 and self.buffer[start-1] not in '\0\r\n\x85\u2028\u2029':
+ start -= 1
+ if self.pointer-start > max_length/2-1:
+ head = ' ... '
+ start += 5
+ break
+ tail = ''
+ end = self.pointer
+ while end < len(self.buffer) and self.buffer[end] not in '\0\r\n\x85\u2028\u2029':
+ end += 1
+ if end-self.pointer > max_length/2-1:
+ tail = ' ... '
+ end -= 5
+ break
+ snippet = self.buffer[start:end]
+ return ' '*indent + head + snippet + tail + '\n' \
+ + ' '*(indent+self.pointer-start+len(head)) + '^'
+
+ def __str__(self):
+ snippet = self.get_snippet()
+ where = " in \"%s\", line %d, column %d" \
+ % (self.name, self.line+1, self.column+1)
+ if snippet is not None:
+ where += ":\n"+snippet
+ return where
+
+class YAMLError(Exception):
+ pass
+
+class MarkedYAMLError(YAMLError):
+
+ def __init__(self, context=None, context_mark=None,
+ problem=None, problem_mark=None, note=None):
+ self.context = context
+ self.context_mark = context_mark
+ self.problem = problem
+ self.problem_mark = problem_mark
+ self.note = note
+
+ def __str__(self):
+ lines = []
+ if self.context is not None:
+ lines.append(self.context)
+ if self.context_mark is not None \
+ and (self.problem is None or self.problem_mark is None
+ or self.context_mark.name != self.problem_mark.name
+ or self.context_mark.line != self.problem_mark.line
+ or self.context_mark.column != self.problem_mark.column):
+ lines.append(str(self.context_mark))
+ if self.problem is not None:
+ lines.append(self.problem)
+ if self.problem_mark is not None:
+ lines.append(str(self.problem_mark))
+ if self.note is not None:
+ lines.append(self.note)
+ return '\n'.join(lines)
+
diff --git a/third_party/python/PyYAML/lib/yaml/events.py b/third_party/python/PyYAML/lib/yaml/events.py
new file mode 100644
index 0000000000..f79ad389cb
--- /dev/null
+++ b/third_party/python/PyYAML/lib/yaml/events.py
@@ -0,0 +1,86 @@
+
+# Abstract classes.
+
+class Event(object):
+ def __init__(self, start_mark=None, end_mark=None):
+ self.start_mark = start_mark
+ self.end_mark = end_mark
+ def __repr__(self):
+ attributes = [key for key in ['anchor', 'tag', 'implicit', 'value']
+ if hasattr(self, key)]
+ arguments = ', '.join(['%s=%r' % (key, getattr(self, key))
+ for key in attributes])
+ return '%s(%s)' % (self.__class__.__name__, arguments)
+
+class NodeEvent(Event):
+ def __init__(self, anchor, start_mark=None, end_mark=None):
+ self.anchor = anchor
+ self.start_mark = start_mark
+ self.end_mark = end_mark
+
+class CollectionStartEvent(NodeEvent):
+ def __init__(self, anchor, tag, implicit, start_mark=None, end_mark=None,
+ flow_style=None):
+ self.anchor = anchor
+ self.tag = tag
+ self.implicit = implicit
+ self.start_mark = start_mark
+ self.end_mark = end_mark
+ self.flow_style = flow_style
+
+class CollectionEndEvent(Event):
+ pass
+
+# Implementations.
+
+class StreamStartEvent(Event):
+ def __init__(self, start_mark=None, end_mark=None, encoding=None):
+ self.start_mark = start_mark
+ self.end_mark = end_mark
+ self.encoding = encoding
+
+class StreamEndEvent(Event):
+ pass
+
+class DocumentStartEvent(Event):
+ def __init__(self, start_mark=None, end_mark=None,
+ explicit=None, version=None, tags=None):
+ self.start_mark = start_mark
+ self.end_mark = end_mark
+ self.explicit = explicit
+ self.version = version
+ self.tags = tags
+
+class DocumentEndEvent(Event):
+ def __init__(self, start_mark=None, end_mark=None,
+ explicit=None):
+ self.start_mark = start_mark
+ self.end_mark = end_mark
+ self.explicit = explicit
+
+class AliasEvent(NodeEvent):
+ pass
+
+class ScalarEvent(NodeEvent):
+ def __init__(self, anchor, tag, implicit, value,
+ start_mark=None, end_mark=None, style=None):
+ self.anchor = anchor
+ self.tag = tag
+ self.implicit = implicit
+ self.value = value
+ self.start_mark = start_mark
+ self.end_mark = end_mark
+ self.style = style
+
+class SequenceStartEvent(CollectionStartEvent):
+ pass
+
+class SequenceEndEvent(CollectionEndEvent):
+ pass
+
+class MappingStartEvent(CollectionStartEvent):
+ pass
+
+class MappingEndEvent(CollectionEndEvent):
+ pass
+
diff --git a/third_party/python/PyYAML/lib/yaml/loader.py b/third_party/python/PyYAML/lib/yaml/loader.py
new file mode 100644
index 0000000000..e90c11224c
--- /dev/null
+++ b/third_party/python/PyYAML/lib/yaml/loader.py
@@ -0,0 +1,63 @@
+
+__all__ = ['BaseLoader', 'FullLoader', 'SafeLoader', 'Loader', 'UnsafeLoader']
+
+from .reader import *
+from .scanner import *
+from .parser import *
+from .composer import *
+from .constructor import *
+from .resolver import *
+
+class BaseLoader(Reader, Scanner, Parser, Composer, BaseConstructor, BaseResolver):
+
+ def __init__(self, stream):
+ Reader.__init__(self, stream)
+ Scanner.__init__(self)
+ Parser.__init__(self)
+ Composer.__init__(self)
+ BaseConstructor.__init__(self)
+ BaseResolver.__init__(self)
+
+class FullLoader(Reader, Scanner, Parser, Composer, FullConstructor, Resolver):
+
+ def __init__(self, stream):
+ Reader.__init__(self, stream)
+ Scanner.__init__(self)
+ Parser.__init__(self)
+ Composer.__init__(self)
+ FullConstructor.__init__(self)
+ Resolver.__init__(self)
+
+class SafeLoader(Reader, Scanner, Parser, Composer, SafeConstructor, Resolver):
+
+ def __init__(self, stream):
+ Reader.__init__(self, stream)
+ Scanner.__init__(self)
+ Parser.__init__(self)
+ Composer.__init__(self)
+ SafeConstructor.__init__(self)
+ Resolver.__init__(self)
+
+class Loader(Reader, Scanner, Parser, Composer, Constructor, Resolver):
+
+ def __init__(self, stream):
+ Reader.__init__(self, stream)
+ Scanner.__init__(self)
+ Parser.__init__(self)
+ Composer.__init__(self)
+ Constructor.__init__(self)
+ Resolver.__init__(self)
+
+# UnsafeLoader is the same as Loader (which is and was always unsafe on
+# untrusted input). Use of either Loader or UnsafeLoader should be rare, since
+# FullLoad should be able to load almost all YAML safely. Loader is left intact
+# to ensure backwards compatibility.
+class UnsafeLoader(Reader, Scanner, Parser, Composer, Constructor, Resolver):
+
+ def __init__(self, stream):
+ Reader.__init__(self, stream)
+ Scanner.__init__(self)
+ Parser.__init__(self)
+ Composer.__init__(self)
+ Constructor.__init__(self)
+ Resolver.__init__(self)
diff --git a/third_party/python/PyYAML/lib/yaml/nodes.py b/third_party/python/PyYAML/lib/yaml/nodes.py
new file mode 100644
index 0000000000..c4f070c41e
--- /dev/null
+++ b/third_party/python/PyYAML/lib/yaml/nodes.py
@@ -0,0 +1,49 @@
+
+class Node(object):
+ def __init__(self, tag, value, start_mark, end_mark):
+ self.tag = tag
+ self.value = value
+ self.start_mark = start_mark
+ self.end_mark = end_mark
+ def __repr__(self):
+ value = self.value
+ #if isinstance(value, list):
+ # if len(value) == 0:
+ # value = '<empty>'
+ # elif len(value) == 1:
+ # value = '<1 item>'
+ # else:
+ # value = '<%d items>' % len(value)
+ #else:
+ # if len(value) > 75:
+ # value = repr(value[:70]+u' ... ')
+ # else:
+ # value = repr(value)
+ value = repr(value)
+ return '%s(tag=%r, value=%s)' % (self.__class__.__name__, self.tag, value)
+
+class ScalarNode(Node):
+ id = 'scalar'
+ def __init__(self, tag, value,
+ start_mark=None, end_mark=None, style=None):
+ self.tag = tag
+ self.value = value
+ self.start_mark = start_mark
+ self.end_mark = end_mark
+ self.style = style
+
+class CollectionNode(Node):
+ def __init__(self, tag, value,
+ start_mark=None, end_mark=None, flow_style=None):
+ self.tag = tag
+ self.value = value
+ self.start_mark = start_mark
+ self.end_mark = end_mark
+ self.flow_style = flow_style
+
+class SequenceNode(CollectionNode):
+ id = 'sequence'
+
+class MappingNode(CollectionNode):
+ id = 'mapping'
+
diff --git a/third_party/python/PyYAML/lib/yaml/parser.py b/third_party/python/PyYAML/lib/yaml/parser.py
new file mode 100644
index 0000000000..13a5995d29
--- /dev/null
+++ b/third_party/python/PyYAML/lib/yaml/parser.py
@@ -0,0 +1,589 @@
+
+# The following YAML grammar is LL(1) and is parsed by a recursive descent
+# parser.
+#
+# stream ::= STREAM-START implicit_document? explicit_document* STREAM-END
+# implicit_document ::= block_node DOCUMENT-END*
+# explicit_document ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END*
+# block_node_or_indentless_sequence ::=
+# ALIAS
+# | properties (block_content | indentless_block_sequence)?
+# | block_content
+# | indentless_block_sequence
+# block_node ::= ALIAS
+# | properties block_content?
+# | block_content
+# flow_node ::= ALIAS
+# | properties flow_content?
+# | flow_content
+# properties ::= TAG ANCHOR? | ANCHOR TAG?
+# block_content ::= block_collection | flow_collection | SCALAR
+# flow_content ::= flow_collection | SCALAR
+# block_collection ::= block_sequence | block_mapping
+# flow_collection ::= flow_sequence | flow_mapping
+# block_sequence ::= BLOCK-SEQUENCE-START (BLOCK-ENTRY block_node?)* BLOCK-END
+# indentless_sequence ::= (BLOCK-ENTRY block_node?)+
+# block_mapping ::= BLOCK-MAPPING_START
+# ((KEY block_node_or_indentless_sequence?)?
+# (VALUE block_node_or_indentless_sequence?)?)*
+# BLOCK-END
+# flow_sequence ::= FLOW-SEQUENCE-START
+# (flow_sequence_entry FLOW-ENTRY)*
+# flow_sequence_entry?
+# FLOW-SEQUENCE-END
+# flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)?
+# flow_mapping ::= FLOW-MAPPING-START
+# (flow_mapping_entry FLOW-ENTRY)*
+# flow_mapping_entry?
+# FLOW-MAPPING-END
+# flow_mapping_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)?
+#
+# FIRST sets:
+#
+# stream: { STREAM-START }
+# explicit_document: { DIRECTIVE DOCUMENT-START }
+# implicit_document: FIRST(block_node)
+# block_node: { ALIAS TAG ANCHOR SCALAR BLOCK-SEQUENCE-START BLOCK-MAPPING-START FLOW-SEQUENCE-START FLOW-MAPPING-START }
+# flow_node: { ALIAS ANCHOR TAG SCALAR FLOW-SEQUENCE-START FLOW-MAPPING-START }
+# block_content: { BLOCK-SEQUENCE-START BLOCK-MAPPING-START FLOW-SEQUENCE-START FLOW-MAPPING-START SCALAR }
+# flow_content: { FLOW-SEQUENCE-START FLOW-MAPPING-START SCALAR }
+# block_collection: { BLOCK-SEQUENCE-START BLOCK-MAPPING-START }
+# flow_collection: { FLOW-SEQUENCE-START FLOW-MAPPING-START }
+# block_sequence: { BLOCK-SEQUENCE-START }
+# block_mapping: { BLOCK-MAPPING-START }
+# block_node_or_indentless_sequence: { ALIAS ANCHOR TAG SCALAR BLOCK-SEQUENCE-START BLOCK-MAPPING-START FLOW-SEQUENCE-START FLOW-MAPPING-START BLOCK-ENTRY }
+# indentless_sequence: { ENTRY }
+# flow_collection: { FLOW-SEQUENCE-START FLOW-MAPPING-START }
+# flow_sequence: { FLOW-SEQUENCE-START }
+# flow_mapping: { FLOW-MAPPING-START }
+# flow_sequence_entry: { ALIAS ANCHOR TAG SCALAR FLOW-SEQUENCE-START FLOW-MAPPING-START KEY }
+# flow_mapping_entry: { ALIAS ANCHOR TAG SCALAR FLOW-SEQUENCE-START FLOW-MAPPING-START KEY }
+
+__all__ = ['Parser', 'ParserError']
+
+from .error import MarkedYAMLError
+from .tokens import *
+from .events import *
+from .scanner import *
+
+class ParserError(MarkedYAMLError):
+ pass
+
+class Parser:
+ # Since writing a recursive-descendant parser is a straightforward task, we
+ # do not give many comments here.
+
+ DEFAULT_TAGS = {
+ '!': '!',
+ '!!': 'tag:yaml.org,2002:',
+ }
+
+ def __init__(self):
+ self.current_event = None
+ self.yaml_version = None
+ self.tag_handles = {}
+ self.states = []
+ self.marks = []
+ self.state = self.parse_stream_start
+
+ def dispose(self):
+ # Reset the state attributes (to clear self-references)
+ self.states = []
+ self.state = None
+
+ def check_event(self, *choices):
+ # Check the type of the next event.
+ if self.current_event is None:
+ if self.state:
+ self.current_event = self.state()
+ if self.current_event is not None:
+ if not choices:
+ return True
+ for choice in choices:
+ if isinstance(self.current_event, choice):
+ return True
+ return False
+
+ def peek_event(self):
+ # Get the next event.
+ if self.current_event is None:
+ if self.state:
+ self.current_event = self.state()
+ return self.current_event
+
+ def get_event(self):
+ # Get the next event and proceed further.
+ if self.current_event is None:
+ if self.state:
+ self.current_event = self.state()
+ value = self.current_event
+ self.current_event = None
+ return value
+
+ # stream ::= STREAM-START implicit_document? explicit_document* STREAM-END
+ # implicit_document ::= block_node DOCUMENT-END*
+ # explicit_document ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END*
+
+ def parse_stream_start(self):
+
+ # Parse the stream start.
+ token = self.get_token()
+ event = StreamStartEvent(token.start_mark, token.end_mark,
+ encoding=token.encoding)
+
+ # Prepare the next state.
+ self.state = self.parse_implicit_document_start
+
+ return event
+
+ def parse_implicit_document_start(self):
+
+ # Parse an implicit document.
+ if not self.check_token(DirectiveToken, DocumentStartToken,
+ StreamEndToken):
+ self.tag_handles = self.DEFAULT_TAGS
+ token = self.peek_token()
+ start_mark = end_mark = token.start_mark
+ event = DocumentStartEvent(start_mark, end_mark,
+ explicit=False)
+
+ # Prepare the next state.
+ self.states.append(self.parse_document_end)
+ self.state = self.parse_block_node
+
+ return event
+
+ else:
+ return self.parse_document_start()
+
+ def parse_document_start(self):
+
+ # Parse any extra document end indicators.
+ while self.check_token(DocumentEndToken):
+ self.get_token()
+
+ # Parse an explicit document.
+ if not self.check_token(StreamEndToken):
+ token = self.peek_token()
+ start_mark = token.start_mark
+ version, tags = self.process_directives()
+ if not self.check_token(DocumentStartToken):
+ raise ParserError(None, None,
+ "expected '<document start>', but found %r"
+ % self.peek_token().id,
+ self.peek_token().start_mark)
+ token = self.get_token()
+ end_mark = token.end_mark
+ event = DocumentStartEvent(start_mark, end_mark,
+ explicit=True, version=version, tags=tags)
+ self.states.append(self.parse_document_end)
+ self.state = self.parse_document_content
+ else:
+ # Parse the end of the stream.
+ token = self.get_token()
+ event = StreamEndEvent(token.start_mark, token.end_mark)
+ assert not self.states
+ assert not self.marks
+ self.state = None
+ return event
+
+ def parse_document_end(self):
+
+ # Parse the document end.
+ token = self.peek_token()
+ start_mark = end_mark = token.start_mark
+ explicit = False
+ if self.check_token(DocumentEndToken):
+ token = self.get_token()
+ end_mark = token.end_mark
+ explicit = True
+ event = DocumentEndEvent(start_mark, end_mark,
+ explicit=explicit)
+
+ # Prepare the next state.
+ self.state = self.parse_document_start
+
+ return event
+
+ def parse_document_content(self):
+ if self.check_token(DirectiveToken,
+ DocumentStartToken, DocumentEndToken, StreamEndToken):
+ event = self.process_empty_scalar(self.peek_token().start_mark)
+ self.state = self.states.pop()
+ return event
+ else:
+ return self.parse_block_node()
+
+ def process_directives(self):
+ self.yaml_version = None
+ self.tag_handles = {}
+ while self.check_token(DirectiveToken):
+ token = self.get_token()
+ if token.name == 'YAML':
+ if self.yaml_version is not None:
+ raise ParserError(None, None,
+ "found duplicate YAML directive", token.start_mark)
+ major, minor = token.value
+ if major != 1:
+ raise ParserError(None, None,
+ "found incompatible YAML document (version 1.* is required)",
+ token.start_mark)
+ self.yaml_version = token.value
+ elif token.name == 'TAG':
+ handle, prefix = token.value
+ if handle in self.tag_handles:
+ raise ParserError(None, None,
+ "duplicate tag handle %r" % handle,
+ token.start_mark)
+ self.tag_handles[handle] = prefix
+ if self.tag_handles:
+ value = self.yaml_version, self.tag_handles.copy()
+ else:
+ value = self.yaml_version, None
+ for key in self.DEFAULT_TAGS:
+ if key not in self.tag_handles:
+ self.tag_handles[key] = self.DEFAULT_TAGS[key]
+ return value
+
+ # block_node_or_indentless_sequence ::= ALIAS
+ # | properties (block_content | indentless_block_sequence)?
+ # | block_content
+ # | indentless_block_sequence
+ # block_node ::= ALIAS
+ # | properties block_content?
+ # | block_content
+ # flow_node ::= ALIAS
+ # | properties flow_content?
+ # | flow_content
+ # properties ::= TAG ANCHOR? | ANCHOR TAG?
+ # block_content ::= block_collection | flow_collection | SCALAR
+ # flow_content ::= flow_collection | SCALAR
+ # block_collection ::= block_sequence | block_mapping
+ # flow_collection ::= flow_sequence | flow_mapping
+
+ def parse_block_node(self):
+ return self.parse_node(block=True)
+
+ def parse_flow_node(self):
+ return self.parse_node()
+
+ def parse_block_node_or_indentless_sequence(self):
+ return self.parse_node(block=True, indentless_sequence=True)
+
+ def parse_node(self, block=False, indentless_sequence=False):
+ if self.check_token(AliasToken):
+ token = self.get_token()
+ event = AliasEvent(token.value, token.start_mark, token.end_mark)
+ self.state = self.states.pop()
+ else:
+ anchor = None
+ tag = None
+ start_mark = end_mark = tag_mark = None
+ if self.check_token(AnchorToken):
+ token = self.get_token()
+ start_mark = token.start_mark
+ end_mark = token.end_mark
+ anchor = token.value
+ if self.check_token(TagToken):
+ token = self.get_token()
+ tag_mark = token.start_mark
+ end_mark = token.end_mark
+ tag = token.value
+ elif self.check_token(TagToken):
+ token = self.get_token()
+ start_mark = tag_mark = token.start_mark
+ end_mark = token.end_mark
+ tag = token.value
+ if self.check_token(AnchorToken):
+ token = self.get_token()
+ end_mark = token.end_mark
+ anchor = token.value
+ if tag is not None:
+ handle, suffix = tag
+ if handle is not None:
+ if handle not in self.tag_handles:
+ raise ParserError("while parsing a node", start_mark,
+ "found undefined tag handle %r" % handle,
+ tag_mark)
+ tag = self.tag_handles[handle]+suffix
+ else:
+ tag = suffix
+ #if tag == '!':
+ # raise ParserError("while parsing a node", start_mark,
+ # "found non-specific tag '!'", tag_mark,
+ # "Please check 'http://pyyaml.org/wiki/YAMLNonSpecificTag' and share your opinion.")
+ if start_mark is None:
+ start_mark = end_mark = self.peek_token().start_mark
+ event = None
+ implicit = (tag is None or tag == '!')
+ if indentless_sequence and self.check_token(BlockEntryToken):
+ end_mark = self.peek_token().end_mark
+ event = SequenceStartEvent(anchor, tag, implicit,
+ start_mark, end_mark)
+ self.state = self.parse_indentless_sequence_entry
+ else:
+ if self.check_token(ScalarToken):
+ token = self.get_token()
+ end_mark = token.end_mark
+ if (token.plain and tag is None) or tag == '!':
+ implicit = (True, False)
+ elif tag is None:
+ implicit = (False, True)
+ else:
+ implicit = (False, False)
+ event = ScalarEvent(anchor, tag, implicit, token.value,
+ start_mark, end_mark, style=token.style)
+ self.state = self.states.pop()
+ elif self.check_token(FlowSequenceStartToken):
+ end_mark = self.peek_token().end_mark
+ event = SequenceStartEvent(anchor, tag, implicit,
+ start_mark, end_mark, flow_style=True)
+ self.state = self.parse_flow_sequence_first_entry
+ elif self.check_token(FlowMappingStartToken):
+ end_mark = self.peek_token().end_mark
+ event = MappingStartEvent(anchor, tag, implicit,
+ start_mark, end_mark, flow_style=True)
+ self.state = self.parse_flow_mapping_first_key
+ elif block and self.check_token(BlockSequenceStartToken):
+ end_mark = self.peek_token().start_mark
+ event = SequenceStartEvent(anchor, tag, implicit,
+ start_mark, end_mark, flow_style=False)
+ self.state = self.parse_block_sequence_first_entry
+ elif block and self.check_token(BlockMappingStartToken):
+ end_mark = self.peek_token().start_mark
+ event = MappingStartEvent(anchor, tag, implicit,
+ start_mark, end_mark, flow_style=False)
+ self.state = self.parse_block_mapping_first_key
+ elif anchor is not None or tag is not None:
+ # Empty scalars are allowed even if a tag or an anchor is
+ # specified.
+ event = ScalarEvent(anchor, tag, (implicit, False), '',
+ start_mark, end_mark)
+ self.state = self.states.pop()
+ else:
+ if block:
+ node = 'block'
+ else:
+ node = 'flow'
+ token = self.peek_token()
+ raise ParserError("while parsing a %s node" % node, start_mark,
+ "expected the node content, but found %r" % token.id,
+ token.start_mark)
+ return event
+
+ # block_sequence ::= BLOCK-SEQUENCE-START (BLOCK-ENTRY block_node?)* BLOCK-END
+
+ def parse_block_sequence_first_entry(self):
+ token = self.get_token()
+ self.marks.append(token.start_mark)
+ return self.parse_block_sequence_entry()
+
+ def parse_block_sequence_entry(self):
+ if self.check_token(BlockEntryToken):
+ token = self.get_token()
+ if not self.check_token(BlockEntryToken, BlockEndToken):
+ self.states.append(self.parse_block_sequence_entry)
+ return self.parse_block_node()
+ else:
+ self.state = self.parse_block_sequence_entry
+ return self.process_empty_scalar(token.end_mark)
+ if not self.check_token(BlockEndToken):
+ token = self.peek_token()
+ raise ParserError("while parsing a block collection", self.marks[-1],
+ "expected <block end>, but found %r" % token.id, token.start_mark)
+ token = self.get_token()
+ event = SequenceEndEvent(token.start_mark, token.end_mark)
+ self.state = self.states.pop()
+ self.marks.pop()
+ return event
+
+ # indentless_sequence ::= (BLOCK-ENTRY block_node?)+
+
+ def parse_indentless_sequence_entry(self):
+ if self.check_token(BlockEntryToken):
+ token = self.get_token()
+ if not self.check_token(BlockEntryToken,
+ KeyToken, ValueToken, BlockEndToken):
+ self.states.append(self.parse_indentless_sequence_entry)
+ return self.parse_block_node()
+ else:
+ self.state = self.parse_indentless_sequence_entry
+ return self.process_empty_scalar(token.end_mark)
+ token = self.peek_token()
+ event = SequenceEndEvent(token.start_mark, token.start_mark)
+ self.state = self.states.pop()
+ return event
+
+ # block_mapping ::= BLOCK-MAPPING_START
+ # ((KEY block_node_or_indentless_sequence?)?
+ # (VALUE block_node_or_indentless_sequence?)?)*
+ # BLOCK-END
+
+ def parse_block_mapping_first_key(self):
+ token = self.get_token()
+ self.marks.append(token.start_mark)
+ return self.parse_block_mapping_key()
+
+ def parse_block_mapping_key(self):
+ if self.check_token(KeyToken):
+ token = self.get_token()
+ if not self.check_token(KeyToken, ValueToken, BlockEndToken):
+ self.states.append(self.parse_block_mapping_value)
+ return self.parse_block_node_or_indentless_sequence()
+ else:
+ self.state = self.parse_block_mapping_value
+ return self.process_empty_scalar(token.end_mark)
+ if not self.check_token(BlockEndToken):
+ token = self.peek_token()
+ raise ParserError("while parsing a block mapping", self.marks[-1],
+ "expected <block end>, but found %r" % token.id, token.start_mark)
+ token = self.get_token()
+ event = MappingEndEvent(token.start_mark, token.end_mark)
+ self.state = self.states.pop()
+ self.marks.pop()
+ return event
+
+ def parse_block_mapping_value(self):
+ if self.check_token(ValueToken):
+ token = self.get_token()
+ if not self.check_token(KeyToken, ValueToken, BlockEndToken):
+ self.states.append(self.parse_block_mapping_key)
+ return self.parse_block_node_or_indentless_sequence()
+ else:
+ self.state = self.parse_block_mapping_key
+ return self.process_empty_scalar(token.end_mark)
+ else:
+ self.state = self.parse_block_mapping_key
+ token = self.peek_token()
+ return self.process_empty_scalar(token.start_mark)
+
+ # flow_sequence ::= FLOW-SEQUENCE-START
+ # (flow_sequence_entry FLOW-ENTRY)*
+ # flow_sequence_entry?
+ # FLOW-SEQUENCE-END
+ # flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)?
+ #
+ # Note that while production rules for both flow_sequence_entry and
+ # flow_mapping_entry are equal, their interpretations are different.
+ # For `flow_sequence_entry`, the part `KEY flow_node? (VALUE flow_node?)?`
+ # generate an inline mapping (set syntax).
+
+ def parse_flow_sequence_first_entry(self):
+ token = self.get_token()
+ self.marks.append(token.start_mark)
+ return self.parse_flow_sequence_entry(first=True)
+
+ def parse_flow_sequence_entry(self, first=False):
+ if not self.check_token(FlowSequenceEndToken):
+ if not first:
+ if self.check_token(FlowEntryToken):
+ self.get_token()
+ else:
+ token = self.peek_token()
+ raise ParserError("while parsing a flow sequence", self.marks[-1],
+ "expected ',' or ']', but got %r" % token.id, token.start_mark)
+
+ if self.check_token(KeyToken):
+ token = self.peek_token()
+ event = MappingStartEvent(None, None, True,
+ token.start_mark, token.end_mark,
+ flow_style=True)
+ self.state = self.parse_flow_sequence_entry_mapping_key
+ return event
+ elif not self.check_token(FlowSequenceEndToken):
+ self.states.append(self.parse_flow_sequence_entry)
+ return self.parse_flow_node()
+ token = self.get_token()
+ event = SequenceEndEvent(token.start_mark, token.end_mark)
+ self.state = self.states.pop()
+ self.marks.pop()
+ return event
+
+ def parse_flow_sequence_entry_mapping_key(self):
+ token = self.get_token()
+ if not self.check_token(ValueToken,
+ FlowEntryToken, FlowSequenceEndToken):
+ self.states.append(self.parse_flow_sequence_entry_mapping_value)
+ return self.parse_flow_node()
+ else:
+ self.state = self.parse_flow_sequence_entry_mapping_value
+ return self.process_empty_scalar(token.end_mark)
+
+ def parse_flow_sequence_entry_mapping_value(self):
+ if self.check_token(ValueToken):
+ token = self.get_token()
+ if not self.check_token(FlowEntryToken, FlowSequenceEndToken):
+ self.states.append(self.parse_flow_sequence_entry_mapping_end)
+ return self.parse_flow_node()
+ else:
+ self.state = self.parse_flow_sequence_entry_mapping_end
+ return self.process_empty_scalar(token.end_mark)
+ else:
+ self.state = self.parse_flow_sequence_entry_mapping_end
+ token = self.peek_token()
+ return self.process_empty_scalar(token.start_mark)
+
+ def parse_flow_sequence_entry_mapping_end(self):
+ self.state = self.parse_flow_sequence_entry
+ token = self.peek_token()
+ return MappingEndEvent(token.start_mark, token.start_mark)
+
+ # flow_mapping ::= FLOW-MAPPING-START
+ # (flow_mapping_entry FLOW-ENTRY)*
+ # flow_mapping_entry?
+ # FLOW-MAPPING-END
+ # flow_mapping_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)?
+
+ def parse_flow_mapping_first_key(self):
+ token = self.get_token()
+ self.marks.append(token.start_mark)
+ return self.parse_flow_mapping_key(first=True)
+
+ def parse_flow_mapping_key(self, first=False):
+ if not self.check_token(FlowMappingEndToken):
+ if not first:
+ if self.check_token(FlowEntryToken):
+ self.get_token()
+ else:
+ token = self.peek_token()
+ raise ParserError("while parsing a flow mapping", self.marks[-1],
+ "expected ',' or '}', but got %r" % token.id, token.start_mark)
+ if self.check_token(KeyToken):
+ token = self.get_token()
+ if not self.check_token(ValueToken,
+ FlowEntryToken, FlowMappingEndToken):
+ self.states.append(self.parse_flow_mapping_value)
+ return self.parse_flow_node()
+ else:
+ self.state = self.parse_flow_mapping_value
+ return self.process_empty_scalar(token.end_mark)
+ elif not self.check_token(FlowMappingEndToken):
+ self.states.append(self.parse_flow_mapping_empty_value)
+ return self.parse_flow_node()
+ token = self.get_token()
+ event = MappingEndEvent(token.start_mark, token.end_mark)
+ self.state = self.states.pop()
+ self.marks.pop()
+ return event
+
+ def parse_flow_mapping_value(self):
+ if self.check_token(ValueToken):
+ token = self.get_token()
+ if not self.check_token(FlowEntryToken, FlowMappingEndToken):
+ self.states.append(self.parse_flow_mapping_key)
+ return self.parse_flow_node()
+ else:
+ self.state = self.parse_flow_mapping_key
+ return self.process_empty_scalar(token.end_mark)
+ else:
+ self.state = self.parse_flow_mapping_key
+ token = self.peek_token()
+ return self.process_empty_scalar(token.start_mark)
+
+ def parse_flow_mapping_empty_value(self):
+ self.state = self.parse_flow_mapping_key
+ return self.process_empty_scalar(self.peek_token().start_mark)
+
+ def process_empty_scalar(self, mark):
+ return ScalarEvent(None, None, (True, False), '', mark, mark)
+
diff --git a/third_party/python/PyYAML/lib/yaml/reader.py b/third_party/python/PyYAML/lib/yaml/reader.py
new file mode 100644
index 0000000000..774b0219b5
--- /dev/null
+++ b/third_party/python/PyYAML/lib/yaml/reader.py
@@ -0,0 +1,185 @@
+# This module contains abstractions for the input stream. You don't have to
+# looks further, there are no pretty code.
+#
+# We define two classes here.
+#
+# Mark(source, line, column)
+# It's just a record and its only use is producing nice error messages.
+# Parser does not use it for any other purposes.
+#
+# Reader(source, data)
+# Reader determines the encoding of `data` and converts it to unicode.
+# Reader provides the following methods and attributes:
+# reader.peek(length=1) - return the next `length` characters
+# reader.forward(length=1) - move the current position to `length` characters.
+# reader.index - the number of the current character.
+# reader.line, stream.column - the line and the column of the current character.
+
+__all__ = ['Reader', 'ReaderError']
+
+from .error import YAMLError, Mark
+
+import codecs, re
+
+class ReaderError(YAMLError):
+
+ def __init__(self, name, position, character, encoding, reason):
+ self.name = name
+ self.character = character
+ self.position = position
+ self.encoding = encoding
+ self.reason = reason
+
+ def __str__(self):
+ if isinstance(self.character, bytes):
+ return "'%s' codec can't decode byte #x%02x: %s\n" \
+ " in \"%s\", position %d" \
+ % (self.encoding, ord(self.character), self.reason,
+ self.name, self.position)
+ else:
+ return "unacceptable character #x%04x: %s\n" \
+ " in \"%s\", position %d" \
+ % (self.character, self.reason,
+ self.name, self.position)
+
+class Reader(object):
+ # Reader:
+ # - determines the data encoding and converts it to a unicode string,
+ # - checks if characters are in allowed range,
+ # - adds '\0' to the end.
+
+ # Reader accepts
+ # - a `bytes` object,
+ # - a `str` object,
+ # - a file-like object with its `read` method returning `str`,
+ # - a file-like object with its `read` method returning `unicode`.
+
+ # Yeah, it's ugly and slow.
+
+ def __init__(self, stream):
+ self.name = None
+ self.stream = None
+ self.stream_pointer = 0
+ self.eof = True
+ self.buffer = ''
+ self.pointer = 0
+ self.raw_buffer = None
+ self.raw_decode = None
+ self.encoding = None
+ self.index = 0
+ self.line = 0
+ self.column = 0
+ if isinstance(stream, str):
+ self.name = "<unicode string>"
+ self.check_printable(stream)
+ self.buffer = stream+'\0'
+ elif isinstance(stream, bytes):
+ self.name = "<byte string>"
+ self.raw_buffer = stream
+ self.determine_encoding()
+ else:
+ self.stream = stream
+ self.name = getattr(stream, 'name', "<file>")
+ self.eof = False
+ self.raw_buffer = None
+ self.determine_encoding()
+
+ def peek(self, index=0):
+ try:
+ return self.buffer[self.pointer+index]
+ except IndexError:
+ self.update(index+1)
+ return self.buffer[self.pointer+index]
+
+ def prefix(self, length=1):
+ if self.pointer+length >= len(self.buffer):
+ self.update(length)
+ return self.buffer[self.pointer:self.pointer+length]
+
+ def forward(self, length=1):
+ if self.pointer+length+1 >= len(self.buffer):
+ self.update(length+1)
+ while length:
+ ch = self.buffer[self.pointer]
+ self.pointer += 1
+ self.index += 1
+ if ch in '\n\x85\u2028\u2029' \
+ or (ch == '\r' and self.buffer[self.pointer] != '\n'):
+ self.line += 1
+ self.column = 0
+ elif ch != '\uFEFF':
+ self.column += 1
+ length -= 1
+
+ def get_mark(self):
+ if self.stream is None:
+ return Mark(self.name, self.index, self.line, self.column,
+ self.buffer, self.pointer)
+ else:
+ return Mark(self.name, self.index, self.line, self.column,
+ None, None)
+
+ def determine_encoding(self):
+ while not self.eof and (self.raw_buffer is None or len(self.raw_buffer) < 2):
+ self.update_raw()
+ if isinstance(self.raw_buffer, bytes):
+ if self.raw_buffer.startswith(codecs.BOM_UTF16_LE):
+ self.raw_decode = codecs.utf_16_le_decode
+ self.encoding = 'utf-16-le'
+ elif self.raw_buffer.startswith(codecs.BOM_UTF16_BE):
+ self.raw_decode = codecs.utf_16_be_decode
+ self.encoding = 'utf-16-be'
+ else:
+ self.raw_decode = codecs.utf_8_decode
+ self.encoding = 'utf-8'
+ self.update(1)
+
+ NON_PRINTABLE = re.compile('[^\x09\x0A\x0D\x20-\x7E\x85\xA0-\uD7FF\uE000-\uFFFD\U00010000-\U0010ffff]')
+ def check_printable(self, data):
+ match = self.NON_PRINTABLE.search(data)
+ if match:
+ character = match.group()
+ position = self.index+(len(self.buffer)-self.pointer)+match.start()
+ raise ReaderError(self.name, position, ord(character),
+ 'unicode', "special characters are not allowed")
+
+ def update(self, length):
+ if self.raw_buffer is None:
+ return
+ self.buffer = self.buffer[self.pointer:]
+ self.pointer = 0
+ while len(self.buffer) < length:
+ if not self.eof:
+ self.update_raw()
+ if self.raw_decode is not None:
+ try:
+ data, converted = self.raw_decode(self.raw_buffer,
+ 'strict', self.eof)
+ except UnicodeDecodeError as exc:
+ character = self.raw_buffer[exc.start]
+ if self.stream is not None:
+ position = self.stream_pointer-len(self.raw_buffer)+exc.start
+ else:
+ position = exc.start
+ raise ReaderError(self.name, position, character,
+ exc.encoding, exc.reason)
+ else:
+ data = self.raw_buffer
+ converted = len(data)
+ self.check_printable(data)
+ self.buffer += data
+ self.raw_buffer = self.raw_buffer[converted:]
+ if self.eof:
+ self.buffer += '\0'
+ self.raw_buffer = None
+ break
+
+ def update_raw(self, size=4096):
+ data = self.stream.read(size)
+ if self.raw_buffer is None:
+ self.raw_buffer = data
+ else:
+ self.raw_buffer += data
+ self.stream_pointer += len(data)
+ if not data:
+ self.eof = True
diff --git a/third_party/python/PyYAML/lib/yaml/representer.py b/third_party/python/PyYAML/lib/yaml/representer.py
new file mode 100644
index 0000000000..808ca06dfb
--- /dev/null
+++ b/third_party/python/PyYAML/lib/yaml/representer.py
@@ -0,0 +1,389 @@
+
+__all__ = ['BaseRepresenter', 'SafeRepresenter', 'Representer',
+ 'RepresenterError']
+
+from .error import *
+from .nodes import *
+
+import datetime, copyreg, types, base64, collections
+
+class RepresenterError(YAMLError):
+ pass
+
+class BaseRepresenter:
+
+ yaml_representers = {}
+ yaml_multi_representers = {}
+
+ def __init__(self, default_style=None, default_flow_style=False, sort_keys=True):
+ self.default_style = default_style
+ self.sort_keys = sort_keys
+ self.default_flow_style = default_flow_style
+ self.represented_objects = {}
+ self.object_keeper = []
+ self.alias_key = None
+
+ def represent(self, data):
+ node = self.represent_data(data)
+ self.serialize(node)
+ self.represented_objects = {}
+ self.object_keeper = []
+ self.alias_key = None
+
+ def represent_data(self, data):
+ if self.ignore_aliases(data):
+ self.alias_key = None
+ else:
+ self.alias_key = id(data)
+ if self.alias_key is not None:
+ if self.alias_key in self.represented_objects:
+ node = self.represented_objects[self.alias_key]
+ #if node is None:
+ # raise RepresenterError("recursive objects are not allowed: %r" % data)
+ return node
+ #self.represented_objects[alias_key] = None
+ self.object_keeper.append(data)
+ data_types = type(data).__mro__
+ if data_types[0] in self.yaml_representers:
+ node = self.yaml_representers[data_types[0]](self, data)
+ else:
+ for data_type in data_types:
+ if data_type in self.yaml_multi_representers:
+ node = self.yaml_multi_representers[data_type](self, data)
+ break
+ else:
+ if None in self.yaml_multi_representers:
+ node = self.yaml_multi_representers[None](self, data)
+ elif None in self.yaml_representers:
+ node = self.yaml_representers[None](self, data)
+ else:
+ node = ScalarNode(None, str(data))
+ #if alias_key is not None:
+ # self.represented_objects[alias_key] = node
+ return node
+
+ @classmethod
+ def add_representer(cls, data_type, representer):
+ if not 'yaml_representers' in cls.__dict__:
+ cls.yaml_representers = cls.yaml_representers.copy()
+ cls.yaml_representers[data_type] = representer
+
+ @classmethod
+ def add_multi_representer(cls, data_type, representer):
+ if not 'yaml_multi_representers' in cls.__dict__:
+ cls.yaml_multi_representers = cls.yaml_multi_representers.copy()
+ cls.yaml_multi_representers[data_type] = representer
+
+ def represent_scalar(self, tag, value, style=None):
+ if style is None:
+ style = self.default_style
+ node = ScalarNode(tag, value, style=style)
+ if self.alias_key is not None:
+ self.represented_objects[self.alias_key] = node
+ return node
+
+ def represent_sequence(self, tag, sequence, flow_style=None):
+ value = []
+ node = SequenceNode(tag, value, flow_style=flow_style)
+ if self.alias_key is not None:
+ self.represented_objects[self.alias_key] = node
+ best_style = True
+ for item in sequence:
+ node_item = self.represent_data(item)
+ if not (isinstance(node_item, ScalarNode) and not node_item.style):
+ best_style = False
+ value.append(node_item)
+ if flow_style is None:
+ if self.default_flow_style is not None:
+ node.flow_style = self.default_flow_style
+ else:
+ node.flow_style = best_style
+ return node
+
+ def represent_mapping(self, tag, mapping, flow_style=None):
+ value = []
+ node = MappingNode(tag, value, flow_style=flow_style)
+ if self.alias_key is not None:
+ self.represented_objects[self.alias_key] = node
+ best_style = True
+ if hasattr(mapping, 'items'):
+ mapping = list(mapping.items())
+ if self.sort_keys:
+ try:
+ mapping = sorted(mapping)
+ except TypeError:
+ pass
+ for item_key, item_value in mapping:
+ node_key = self.represent_data(item_key)
+ node_value = self.represent_data(item_value)
+ if not (isinstance(node_key, ScalarNode) and not node_key.style):
+ best_style = False
+ if not (isinstance(node_value, ScalarNode) and not node_value.style):
+ best_style = False
+ value.append((node_key, node_value))
+ if flow_style is None:
+ if self.default_flow_style is not None:
+ node.flow_style = self.default_flow_style
+ else:
+ node.flow_style = best_style
+ return node
+
+ def ignore_aliases(self, data):
+ return False
+
+class SafeRepresenter(BaseRepresenter):
+
+ def ignore_aliases(self, data):
+ if data is None:
+ return True
+ if isinstance(data, tuple) and data == ():
+ return True
+ if isinstance(data, (str, bytes, bool, int, float)):
+ return True
+
+ def represent_none(self, data):
+ return self.represent_scalar('tag:yaml.org,2002:null', 'null')
+
+ def represent_str(self, data):
+ return self.represent_scalar('tag:yaml.org,2002:str', data)
+
+ def represent_binary(self, data):
+ if hasattr(base64, 'encodebytes'):
+ data = base64.encodebytes(data).decode('ascii')
+ else:
+ data = base64.encodestring(data).decode('ascii')
+ return self.represent_scalar('tag:yaml.org,2002:binary', data, style='|')
+
+ def represent_bool(self, data):
+ if data:
+ value = 'true'
+ else:
+ value = 'false'
+ return self.represent_scalar('tag:yaml.org,2002:bool', value)
+
+ def represent_int(self, data):
+ return self.represent_scalar('tag:yaml.org,2002:int', str(data))
+
+ inf_value = 1e300
+ while repr(inf_value) != repr(inf_value*inf_value):
+ inf_value *= inf_value
+
+ def represent_float(self, data):
+ if data != data or (data == 0.0 and data == 1.0):
+ value = '.nan'
+ elif data == self.inf_value:
+ value = '.inf'
+ elif data == -self.inf_value:
+ value = '-.inf'
+ else:
+ value = repr(data).lower()
+ # Note that in some cases `repr(data)` represents a float number
+ # without the decimal parts. For instance:
+ # >>> repr(1e17)
+ # '1e17'
+ # Unfortunately, this is not a valid float representation according
+ # to the definition of the `!!float` tag. We fix this by adding
+ # '.0' before the 'e' symbol.
+ if '.' not in value and 'e' in value:
+ value = value.replace('e', '.0e', 1)
+ return self.represent_scalar('tag:yaml.org,2002:float', value)
+
+ def represent_list(self, data):
+ #pairs = (len(data) > 0 and isinstance(data, list))
+ #if pairs:
+ # for item in data:
+ # if not isinstance(item, tuple) or len(item) != 2:
+ # pairs = False
+ # break
+ #if not pairs:
+ return self.represent_sequence('tag:yaml.org,2002:seq', data)
+ #value = []
+ #for item_key, item_value in data:
+ # value.append(self.represent_mapping(u'tag:yaml.org,2002:map',
+ # [(item_key, item_value)]))
+ #return SequenceNode(u'tag:yaml.org,2002:pairs', value)
+
+ def represent_dict(self, data):
+ return self.represent_mapping('tag:yaml.org,2002:map', data)
+
+ def represent_set(self, data):
+ value = {}
+ for key in data:
+ value[key] = None
+ return self.represent_mapping('tag:yaml.org,2002:set', value)
+
+ def represent_date(self, data):
+ value = data.isoformat()
+ return self.represent_scalar('tag:yaml.org,2002:timestamp', value)
+
+ def represent_datetime(self, data):
+ value = data.isoformat(' ')
+ return self.represent_scalar('tag:yaml.org,2002:timestamp', value)
+
+ def represent_yaml_object(self, tag, data, cls, flow_style=None):
+ if hasattr(data, '__getstate__'):
+ state = data.__getstate__()
+ else:
+ state = data.__dict__.copy()
+ return self.represent_mapping(tag, state, flow_style=flow_style)
+
+ def represent_undefined(self, data):
+ raise RepresenterError("cannot represent an object", data)
+
+SafeRepresenter.add_representer(type(None),
+ SafeRepresenter.represent_none)
+
+SafeRepresenter.add_representer(str,
+ SafeRepresenter.represent_str)
+
+SafeRepresenter.add_representer(bytes,
+ SafeRepresenter.represent_binary)
+
+SafeRepresenter.add_representer(bool,
+ SafeRepresenter.represent_bool)
+
+SafeRepresenter.add_representer(int,
+ SafeRepresenter.represent_int)
+
+SafeRepresenter.add_representer(float,
+ SafeRepresenter.represent_float)
+
+SafeRepresenter.add_representer(list,
+ SafeRepresenter.represent_list)
+
+SafeRepresenter.add_representer(tuple,
+ SafeRepresenter.represent_list)
+
+SafeRepresenter.add_representer(dict,
+ SafeRepresenter.represent_dict)
+
+SafeRepresenter.add_representer(set,
+ SafeRepresenter.represent_set)
+
+SafeRepresenter.add_representer(datetime.date,
+ SafeRepresenter.represent_date)
+
+SafeRepresenter.add_representer(datetime.datetime,
+ SafeRepresenter.represent_datetime)
+
+SafeRepresenter.add_representer(None,
+ SafeRepresenter.represent_undefined)
+
+class Representer(SafeRepresenter):
+
+ def represent_complex(self, data):
+ if data.imag == 0.0:
+ data = '%r' % data.real
+ elif data.real == 0.0:
+ data = '%rj' % data.imag
+ elif data.imag > 0:
+ data = '%r+%rj' % (data.real, data.imag)
+ else:
+ data = '%r%rj' % (data.real, data.imag)
+ return self.represent_scalar('tag:yaml.org,2002:python/complex', data)
+
+ def represent_tuple(self, data):
+ return self.represent_sequence('tag:yaml.org,2002:python/tuple', data)
+
+ def represent_name(self, data):
+ name = '%s.%s' % (data.__module__, data.__name__)
+ return self.represent_scalar('tag:yaml.org,2002:python/name:'+name, '')
+
+ def represent_module(self, data):
+ return self.represent_scalar(
+ 'tag:yaml.org,2002:python/module:'+data.__name__, '')
+
+ def represent_object(self, data):
+ # We use __reduce__ API to save the data. data.__reduce__ returns
+ # a tuple of length 2-5:
+ # (function, args, state, listitems, dictitems)
+
+ # For reconstructing, we calls function(*args), then set its state,
+ # listitems, and dictitems if they are not None.
+
+ # A special case is when function.__name__ == '__newobj__'. In this
+ # case we create the object with args[0].__new__(*args).
+
+ # Another special case is when __reduce__ returns a string - we don't
+ # support it.
+
+ # We produce a !!python/object, !!python/object/new or
+ # !!python/object/apply node.
+
+ cls = type(data)
+ if cls in copyreg.dispatch_table:
+ reduce = copyreg.dispatch_table[cls](data)
+ elif hasattr(data, '__reduce_ex__'):
+ reduce = data.__reduce_ex__(2)
+ elif hasattr(data, '__reduce__'):
+ reduce = data.__reduce__()
+ else:
+ raise RepresenterError("cannot represent an object", data)
+ reduce = (list(reduce)+[None]*5)[:5]
+ function, args, state, listitems, dictitems = reduce
+ args = list(args)
+ if state is None:
+ state = {}
+ if listitems is not None:
+ listitems = list(listitems)
+ if dictitems is not None:
+ dictitems = dict(dictitems)
+ if function.__name__ == '__newobj__':
+ function = args[0]
+ args = args[1:]
+ tag = 'tag:yaml.org,2002:python/object/new:'
+ newobj = True
+ else:
+ tag = 'tag:yaml.org,2002:python/object/apply:'
+ newobj = False
+ function_name = '%s.%s' % (function.__module__, function.__name__)
+ if not args and not listitems and not dictitems \
+ and isinstance(state, dict) and newobj:
+ return self.represent_mapping(
+ 'tag:yaml.org,2002:python/object:'+function_name, state)
+ if not listitems and not dictitems \
+ and isinstance(state, dict) and not state:
+ return self.represent_sequence(tag+function_name, args)
+ value = {}
+ if args:
+ value['args'] = args
+ if state or not isinstance(state, dict):
+ value['state'] = state
+ if listitems:
+ value['listitems'] = listitems
+ if dictitems:
+ value['dictitems'] = dictitems
+ return self.represent_mapping(tag+function_name, value)
+
+ def represent_ordered_dict(self, data):
+ # Provide uniform representation across different Python versions.
+ data_type = type(data)
+ tag = 'tag:yaml.org,2002:python/object/apply:%s.%s' \
+ % (data_type.__module__, data_type.__name__)
+ items = [[key, value] for key, value in data.items()]
+ return self.represent_sequence(tag, [items])
+
+Representer.add_representer(complex,
+ Representer.represent_complex)
+
+Representer.add_representer(tuple,
+ Representer.represent_tuple)
+
+Representer.add_multi_representer(type,
+ Representer.represent_name)
+
+Representer.add_representer(collections.OrderedDict,
+ Representer.represent_ordered_dict)
+
+Representer.add_representer(types.FunctionType,
+ Representer.represent_name)
+
+Representer.add_representer(types.BuiltinFunctionType,
+ Representer.represent_name)
+
+Representer.add_representer(types.ModuleType,
+ Representer.represent_module)
+
+Representer.add_multi_representer(object,
+ Representer.represent_object)
+
diff --git a/third_party/python/PyYAML/lib/yaml/resolver.py b/third_party/python/PyYAML/lib/yaml/resolver.py
new file mode 100644
index 0000000000..3522bdaaf6
--- /dev/null
+++ b/third_party/python/PyYAML/lib/yaml/resolver.py
@@ -0,0 +1,227 @@
+
+__all__ = ['BaseResolver', 'Resolver']
+
+from .error import *
+from .nodes import *
+
+import re
+
+class ResolverError(YAMLError):
+ pass
+
+class BaseResolver:
+
+ DEFAULT_SCALAR_TAG = 'tag:yaml.org,2002:str'
+ DEFAULT_SEQUENCE_TAG = 'tag:yaml.org,2002:seq'
+ DEFAULT_MAPPING_TAG = 'tag:yaml.org,2002:map'
+
+ yaml_implicit_resolvers = {}
+ yaml_path_resolvers = {}
+
+ def __init__(self):
+ self.resolver_exact_paths = []
+ self.resolver_prefix_paths = []
+
+ @classmethod
+ def add_implicit_resolver(cls, tag, regexp, first):
+ if not 'yaml_implicit_resolvers' in cls.__dict__:
+ implicit_resolvers = {}
+ for key in cls.yaml_implicit_resolvers:
+ implicit_resolvers[key] = cls.yaml_implicit_resolvers[key][:]
+ cls.yaml_implicit_resolvers = implicit_resolvers
+ if first is None:
+ first = [None]
+ for ch in first:
+ cls.yaml_implicit_resolvers.setdefault(ch, []).append((tag, regexp))
+
+ @classmethod
+ def add_path_resolver(cls, tag, path, kind=None):
+ # Note: `add_path_resolver` is experimental. The API could be changed.
+ # `new_path` is a pattern that is matched against the path from the
+ # root to the node that is being considered. `node_path` elements are
+ # tuples `(node_check, index_check)`. `node_check` is a node class:
+ # `ScalarNode`, `SequenceNode`, `MappingNode` or `None`. `None`
+ # matches any kind of a node. `index_check` could be `None`, a boolean
+ # value, a string value, or a number. `None` and `False` match against
+ # any _value_ of sequence and mapping nodes. `True` matches against
+ # any _key_ of a mapping node. A string `index_check` matches against
+ # a mapping value that corresponds to a scalar key which content is
+ # equal to the `index_check` value. An integer `index_check` matches
+ # against a sequence value with the index equal to `index_check`.
+ if not 'yaml_path_resolvers' in cls.__dict__:
+ cls.yaml_path_resolvers = cls.yaml_path_resolvers.copy()
+ new_path = []
+ for element in path:
+ if isinstance(element, (list, tuple)):
+ if len(element) == 2:
+ node_check, index_check = element
+ elif len(element) == 1:
+ node_check = element[0]
+ index_check = True
+ else:
+ raise ResolverError("Invalid path element: %s" % element)
+ else:
+ node_check = None
+ index_check = element
+ if node_check is str:
+ node_check = ScalarNode
+ elif node_check is list:
+ node_check = SequenceNode
+ elif node_check is dict:
+ node_check = MappingNode
+ elif node_check not in [ScalarNode, SequenceNode, MappingNode] \
+ and not isinstance(node_check, str) \
+ and node_check is not None:
+ raise ResolverError("Invalid node checker: %s" % node_check)
+ if not isinstance(index_check, (str, int)) \
+ and index_check is not None:
+ raise ResolverError("Invalid index checker: %s" % index_check)
+ new_path.append((node_check, index_check))
+ if kind is str:
+ kind = ScalarNode
+ elif kind is list:
+ kind = SequenceNode
+ elif kind is dict:
+ kind = MappingNode
+ elif kind not in [ScalarNode, SequenceNode, MappingNode] \
+ and kind is not None:
+ raise ResolverError("Invalid node kind: %s" % kind)
+ cls.yaml_path_resolvers[tuple(new_path), kind] = tag
+
+ def descend_resolver(self, current_node, current_index):
+ if not self.yaml_path_resolvers:
+ return
+ exact_paths = {}
+ prefix_paths = []
+ if current_node:
+ depth = len(self.resolver_prefix_paths)
+ for path, kind in self.resolver_prefix_paths[-1]:
+ if self.check_resolver_prefix(depth, path, kind,
+ current_node, current_index):
+ if len(path) > depth:
+ prefix_paths.append((path, kind))
+ else:
+ exact_paths[kind] = self.yaml_path_resolvers[path, kind]
+ else:
+ for path, kind in self.yaml_path_resolvers:
+ if not path:
+ exact_paths[kind] = self.yaml_path_resolvers[path, kind]
+ else:
+ prefix_paths.append((path, kind))
+ self.resolver_exact_paths.append(exact_paths)
+ self.resolver_prefix_paths.append(prefix_paths)
+
+ def ascend_resolver(self):
+ if not self.yaml_path_resolvers:
+ return
+ self.resolver_exact_paths.pop()
+ self.resolver_prefix_paths.pop()
+
+ def check_resolver_prefix(self, depth, path, kind,
+ current_node, current_index):
+ node_check, index_check = path[depth-1]
+ if isinstance(node_check, str):
+ if current_node.tag != node_check:
+ return
+ elif node_check is not None:
+ if not isinstance(current_node, node_check):
+ return
+ if index_check is True and current_index is not None:
+ return
+ if (index_check is False or index_check is None) \
+ and current_index is None:
+ return
+ if isinstance(index_check, str):
+ if not (isinstance(current_index, ScalarNode)
+ and index_check == current_index.value):
+ return
+ elif isinstance(index_check, int) and not isinstance(index_check, bool):
+ if index_check != current_index:
+ return
+ return True
+
+ def resolve(self, kind, value, implicit):
+ if kind is ScalarNode and implicit[0]:
+ if value == '':
+ resolvers = self.yaml_implicit_resolvers.get('', [])
+ else:
+ resolvers = self.yaml_implicit_resolvers.get(value[0], [])
+ wildcard_resolvers = self.yaml_implicit_resolvers.get(None, [])
+ for tag, regexp in resolvers + wildcard_resolvers:
+ if regexp.match(value):
+ return tag
+ implicit = implicit[1]
+ if self.yaml_path_resolvers:
+ exact_paths = self.resolver_exact_paths[-1]
+ if kind in exact_paths:
+ return exact_paths[kind]
+ if None in exact_paths:
+ return exact_paths[None]
+ if kind is ScalarNode:
+ return self.DEFAULT_SCALAR_TAG
+ elif kind is SequenceNode:
+ return self.DEFAULT_SEQUENCE_TAG
+ elif kind is MappingNode:
+ return self.DEFAULT_MAPPING_TAG
+
+class Resolver(BaseResolver):
+ pass
+
+Resolver.add_implicit_resolver(
+ 'tag:yaml.org,2002:bool',
+ re.compile(r'''^(?:yes|Yes|YES|no|No|NO
+ |true|True|TRUE|false|False|FALSE
+ |on|On|ON|off|Off|OFF)$''', re.X),
+ list('yYnNtTfFoO'))
+
+Resolver.add_implicit_resolver(
+ 'tag:yaml.org,2002:float',
+ re.compile(r'''^(?:[-+]?(?:[0-9][0-9_]*)\.[0-9_]*(?:[eE][-+][0-9]+)?
+ |\.[0-9][0-9_]*(?:[eE][-+][0-9]+)?
+ |[-+]?[0-9][0-9_]*(?::[0-5]?[0-9])+\.[0-9_]*
+ |[-+]?\.(?:inf|Inf|INF)
+ |\.(?:nan|NaN|NAN))$''', re.X),
+ list('-+0123456789.'))
+
+Resolver.add_implicit_resolver(
+ 'tag:yaml.org,2002:int',
+ re.compile(r'''^(?:[-+]?0b[0-1_]+
+ |[-+]?0[0-7_]+
+ |[-+]?(?:0|[1-9][0-9_]*)
+ |[-+]?0x[0-9a-fA-F_]+
+ |[-+]?[1-9][0-9_]*(?::[0-5]?[0-9])+)$''', re.X),
+ list('-+0123456789'))
+
+Resolver.add_implicit_resolver(
+ 'tag:yaml.org,2002:merge',
+ re.compile(r'^(?:<<)$'),
+ ['<'])
+
+Resolver.add_implicit_resolver(
+ 'tag:yaml.org,2002:null',
+ re.compile(r'''^(?: ~
+ |null|Null|NULL
+ | )$''', re.X),
+ ['~', 'n', 'N', ''])
+
+Resolver.add_implicit_resolver(
+ 'tag:yaml.org,2002:timestamp',
+ re.compile(r'''^(?:[0-9][0-9][0-9][0-9]-[0-9][0-9]-[0-9][0-9]
+ |[0-9][0-9][0-9][0-9] -[0-9][0-9]? -[0-9][0-9]?
+ (?:[Tt]|[ \t]+)[0-9][0-9]?
+ :[0-9][0-9] :[0-9][0-9] (?:\.[0-9]*)?
+ (?:[ \t]*(?:Z|[-+][0-9][0-9]?(?::[0-9][0-9])?))?)$''', re.X),
+ list('0123456789'))
+
+Resolver.add_implicit_resolver(
+ 'tag:yaml.org,2002:value',
+ re.compile(r'^(?:=)$'),
+ ['='])
+
+# The following resolver is only for documentation purposes. It cannot work
+# because plain scalars cannot start with '!', '&', or '*'.
+Resolver.add_implicit_resolver(
+ 'tag:yaml.org,2002:yaml',
+ re.compile(r'^(?:!|&|\*)$'),
+ list('!&*'))
+
diff --git a/third_party/python/PyYAML/lib/yaml/scanner.py b/third_party/python/PyYAML/lib/yaml/scanner.py
new file mode 100644
index 0000000000..de925b07f1
--- /dev/null
+++ b/third_party/python/PyYAML/lib/yaml/scanner.py
@@ -0,0 +1,1435 @@
+
+# Scanner produces tokens of the following types:
+# STREAM-START
+# STREAM-END
+# DIRECTIVE(name, value)
+# DOCUMENT-START
+# DOCUMENT-END
+# BLOCK-SEQUENCE-START
+# BLOCK-MAPPING-START
+# BLOCK-END
+# FLOW-SEQUENCE-START
+# FLOW-MAPPING-START
+# FLOW-SEQUENCE-END
+# FLOW-MAPPING-END
+# BLOCK-ENTRY
+# FLOW-ENTRY
+# KEY
+# VALUE
+# ALIAS(value)
+# ANCHOR(value)
+# TAG(value)
+# SCALAR(value, plain, style)
+#
+# Read comments in the Scanner code for more details.
+#
+
+__all__ = ['Scanner', 'ScannerError']
+
+from .error import MarkedYAMLError
+from .tokens import *
+
+class ScannerError(MarkedYAMLError):
+ pass
+
+class SimpleKey:
+ # See below simple keys treatment.
+
+ def __init__(self, token_number, required, index, line, column, mark):
+ self.token_number = token_number
+ self.required = required
+ self.index = index
+ self.line = line
+ self.column = column
+ self.mark = mark
+
+class Scanner:
+
+ def __init__(self):
+ """Initialize the scanner."""
+ # It is assumed that Scanner and Reader will have a common descendant.
+ # Reader do the dirty work of checking for BOM and converting the
+ # input data to Unicode. It also adds NUL to the end.
+ #
+ # Reader supports the following methods
+ # self.peek(i=0) # peek the next i-th character
+ # self.prefix(l=1) # peek the next l characters
+ # self.forward(l=1) # read the next l characters and move the pointer.
+
+ # Had we reached the end of the stream?
+ self.done = False
+
+ # The number of unclosed '{' and '['. `flow_level == 0` means block
+ # context.
+ self.flow_level = 0
+
+ # List of processed tokens that are not yet emitted.
+ self.tokens = []
+
+ # Add the STREAM-START token.
+ self.fetch_stream_start()
+
+ # Number of tokens that were emitted through the `get_token` method.
+ self.tokens_taken = 0
+
+ # The current indentation level.
+ self.indent = -1
+
+ # Past indentation levels.
+ self.indents = []
+
+ # Variables related to simple keys treatment.
+
+ # A simple key is a key that is not denoted by the '?' indicator.
+ # Example of simple keys:
+ # ---
+ # block simple key: value
+ # ? not a simple key:
+ # : { flow simple key: value }
+ # We emit the KEY token before all keys, so when we find a potential
+ # simple key, we try to locate the corresponding ':' indicator.
+ # Simple keys should be limited to a single line and 1024 characters.
+
+ # Can a simple key start at the current position? A simple key may
+ # start:
+ # - at the beginning of the line, not counting indentation spaces
+ # (in block context),
+ # - after '{', '[', ',' (in the flow context),
+ # - after '?', ':', '-' (in the block context).
+ # In the block context, this flag also signifies if a block collection
+ # may start at the current position.
+ self.allow_simple_key = True
+
+ # Keep track of possible simple keys. This is a dictionary. The key
+ # is `flow_level`; there can be no more that one possible simple key
+ # for each level. The value is a SimpleKey record:
+ # (token_number, required, index, line, column, mark)
+ # A simple key may start with ALIAS, ANCHOR, TAG, SCALAR(flow),
+ # '[', or '{' tokens.
+ self.possible_simple_keys = {}
+
+ # Public methods.
+
+ def check_token(self, *choices):
+ # Check if the next token is one of the given types.
+ while self.need_more_tokens():
+ self.fetch_more_tokens()
+ if self.tokens:
+ if not choices:
+ return True
+ for choice in choices:
+ if isinstance(self.tokens[0], choice):
+ return True
+ return False
+
+ def peek_token(self):
+ # Return the next token, but do not delete if from the queue.
+ # Return None if no more tokens.
+ while self.need_more_tokens():
+ self.fetch_more_tokens()
+ if self.tokens:
+ return self.tokens[0]
+ else:
+ return None
+
+ def get_token(self):
+ # Return the next token.
+ while self.need_more_tokens():
+ self.fetch_more_tokens()
+ if self.tokens:
+ self.tokens_taken += 1
+ return self.tokens.pop(0)
+
+ # Private methods.
+
+ def need_more_tokens(self):
+ if self.done:
+ return False
+ if not self.tokens:
+ return True
+ # The current token may be a potential simple key, so we
+ # need to look further.
+ self.stale_possible_simple_keys()
+ if self.next_possible_simple_key() == self.tokens_taken:
+ return True
+
+ def fetch_more_tokens(self):
+
+ # Eat whitespaces and comments until we reach the next token.
+ self.scan_to_next_token()
+
+ # Remove obsolete possible simple keys.
+ self.stale_possible_simple_keys()
+
+ # Compare the current indentation and column. It may add some tokens
+ # and decrease the current indentation level.
+ self.unwind_indent(self.column)
+
+ # Peek the next character.
+ ch = self.peek()
+
+ # Is it the end of stream?
+ if ch == '\0':
+ return self.fetch_stream_end()
+
+ # Is it a directive?
+ if ch == '%' and self.check_directive():
+ return self.fetch_directive()
+
+ # Is it the document start?
+ if ch == '-' and self.check_document_start():
+ return self.fetch_document_start()
+
+ # Is it the document end?
+ if ch == '.' and self.check_document_end():
+ return self.fetch_document_end()
+
+ # TODO: support for BOM within a stream.
+ #if ch == '\uFEFF':
+ # return self.fetch_bom() <-- issue BOMToken
+
+ # Note: the order of the following checks is NOT significant.
+
+ # Is it the flow sequence start indicator?
+ if ch == '[':
+ return self.fetch_flow_sequence_start()
+
+ # Is it the flow mapping start indicator?
+ if ch == '{':
+ return self.fetch_flow_mapping_start()
+
+ # Is it the flow sequence end indicator?
+ if ch == ']':
+ return self.fetch_flow_sequence_end()
+
+ # Is it the flow mapping end indicator?
+ if ch == '}':
+ return self.fetch_flow_mapping_end()
+
+ # Is it the flow entry indicator?
+ if ch == ',':
+ return self.fetch_flow_entry()
+
+ # Is it the block entry indicator?
+ if ch == '-' and self.check_block_entry():
+ return self.fetch_block_entry()
+
+ # Is it the key indicator?
+ if ch == '?' and self.check_key():
+ return self.fetch_key()
+
+ # Is it the value indicator?
+ if ch == ':' and self.check_value():
+ return self.fetch_value()
+
+ # Is it an alias?
+ if ch == '*':
+ return self.fetch_alias()
+
+ # Is it an anchor?
+ if ch == '&':
+ return self.fetch_anchor()
+
+ # Is it a tag?
+ if ch == '!':
+ return self.fetch_tag()
+
+ # Is it a literal scalar?
+ if ch == '|' and not self.flow_level:
+ return self.fetch_literal()
+
+ # Is it a folded scalar?
+ if ch == '>' and not self.flow_level:
+ return self.fetch_folded()
+
+ # Is it a single quoted scalar?
+ if ch == '\'':
+ return self.fetch_single()
+
+ # Is it a double quoted scalar?
+ if ch == '\"':
+ return self.fetch_double()
+
+ # It must be a plain scalar then.
+ if self.check_plain():
+ return self.fetch_plain()
+
+ # No? It's an error. Let's produce a nice error message.
+ raise ScannerError("while scanning for the next token", None,
+ "found character %r that cannot start any token" % ch,
+ self.get_mark())
+
+ # Simple keys treatment.
+
+ def next_possible_simple_key(self):
+ # Return the number of the nearest possible simple key. Actually we
+ # don't need to loop through the whole dictionary. We may replace it
+ # with the following code:
+ # if not self.possible_simple_keys:
+ # return None
+ # return self.possible_simple_keys[
+ # min(self.possible_simple_keys.keys())].token_number
+ min_token_number = None
+ for level in self.possible_simple_keys:
+ key = self.possible_simple_keys[level]
+ if min_token_number is None or key.token_number < min_token_number:
+ min_token_number = key.token_number
+ return min_token_number
+
+ def stale_possible_simple_keys(self):
+ # Remove entries that are no longer possible simple keys. According to
+ # the YAML specification, simple keys
+ # - should be limited to a single line,
+ # - should be no longer than 1024 characters.
+ # Disabling this procedure will allow simple keys of any length and
+ # height (may cause problems if indentation is broken though).
+ for level in list(self.possible_simple_keys):
+ key = self.possible_simple_keys[level]
+ if key.line != self.line \
+ or self.index-key.index > 1024:
+ if key.required:
+ raise ScannerError("while scanning a simple key", key.mark,
+ "could not find expected ':'", self.get_mark())
+ del self.possible_simple_keys[level]
+
+ def save_possible_simple_key(self):
+ # The next token may start a simple key. We check if it's possible
+ # and save its position. This function is called for
+ # ALIAS, ANCHOR, TAG, SCALAR(flow), '[', and '{'.
+
+ # Check if a simple key is required at the current position.
+ required = not self.flow_level and self.indent == self.column
+
+ # The next token might be a simple key. Let's save it's number and
+ # position.
+ if self.allow_simple_key:
+ self.remove_possible_simple_key()
+ token_number = self.tokens_taken+len(self.tokens)
+ key = SimpleKey(token_number, required,
+ self.index, self.line, self.column, self.get_mark())
+ self.possible_simple_keys[self.flow_level] = key
+
+ def remove_possible_simple_key(self):
+ # Remove the saved possible key position at the current flow level.
+ if self.flow_level in self.possible_simple_keys:
+ key = self.possible_simple_keys[self.flow_level]
+
+ if key.required:
+ raise ScannerError("while scanning a simple key", key.mark,
+ "could not find expected ':'", self.get_mark())
+
+ del self.possible_simple_keys[self.flow_level]
+
+ # Indentation functions.
+
+ def unwind_indent(self, column):
+
+ ## In flow context, tokens should respect indentation.
+ ## Actually the condition should be `self.indent >= column` according to
+ ## the spec. But this condition will prohibit intuitively correct
+ ## constructions such as
+ ## key : {
+ ## }
+ #if self.flow_level and self.indent > column:
+ # raise ScannerError(None, None,
+ # "invalid indentation or unclosed '[' or '{'",
+ # self.get_mark())
+
+ # In the flow context, indentation is ignored. We make the scanner less
+ # restrictive then specification requires.
+ if self.flow_level:
+ return
+
+ # In block context, we may need to issue the BLOCK-END tokens.
+ while self.indent > column:
+ mark = self.get_mark()
+ self.indent = self.indents.pop()
+ self.tokens.append(BlockEndToken(mark, mark))
+
+ def add_indent(self, column):
+ # Check if we need to increase indentation.
+ if self.indent < column:
+ self.indents.append(self.indent)
+ self.indent = column
+ return True
+ return False
+
+ # Fetchers.
+
+ def fetch_stream_start(self):
+ # We always add STREAM-START as the first token and STREAM-END as the
+ # last token.
+
+ # Read the token.
+ mark = self.get_mark()
+
+ # Add STREAM-START.
+ self.tokens.append(StreamStartToken(mark, mark,
+ encoding=self.encoding))
+
+
+ def fetch_stream_end(self):
+
+ # Set the current indentation to -1.
+ self.unwind_indent(-1)
+
+ # Reset simple keys.
+ self.remove_possible_simple_key()
+ self.allow_simple_key = False
+ self.possible_simple_keys = {}
+
+ # Read the token.
+ mark = self.get_mark()
+
+ # Add STREAM-END.
+ self.tokens.append(StreamEndToken(mark, mark))
+
+ # The steam is finished.
+ self.done = True
+
+ def fetch_directive(self):
+
+ # Set the current indentation to -1.
+ self.unwind_indent(-1)
+
+ # Reset simple keys.
+ self.remove_possible_simple_key()
+ self.allow_simple_key = False
+
+ # Scan and add DIRECTIVE.
+ self.tokens.append(self.scan_directive())
+
+ def fetch_document_start(self):
+ self.fetch_document_indicator(DocumentStartToken)
+
+ def fetch_document_end(self):
+ self.fetch_document_indicator(DocumentEndToken)
+
+ def fetch_document_indicator(self, TokenClass):
+
+ # Set the current indentation to -1.
+ self.unwind_indent(-1)
+
+ # Reset simple keys. Note that there could not be a block collection
+ # after '---'.
+ self.remove_possible_simple_key()
+ self.allow_simple_key = False
+
+ # Add DOCUMENT-START or DOCUMENT-END.
+ start_mark = self.get_mark()
+ self.forward(3)
+ end_mark = self.get_mark()
+ self.tokens.append(TokenClass(start_mark, end_mark))
+
+ def fetch_flow_sequence_start(self):
+ self.fetch_flow_collection_start(FlowSequenceStartToken)
+
+ def fetch_flow_mapping_start(self):
+ self.fetch_flow_collection_start(FlowMappingStartToken)
+
+ def fetch_flow_collection_start(self, TokenClass):
+
+ # '[' and '{' may start a simple key.
+ self.save_possible_simple_key()
+
+ # Increase the flow level.
+ self.flow_level += 1
+
+ # Simple keys are allowed after '[' and '{'.
+ self.allow_simple_key = True
+
+ # Add FLOW-SEQUENCE-START or FLOW-MAPPING-START.
+ start_mark = self.get_mark()
+ self.forward()
+ end_mark = self.get_mark()
+ self.tokens.append(TokenClass(start_mark, end_mark))
+
+ def fetch_flow_sequence_end(self):
+ self.fetch_flow_collection_end(FlowSequenceEndToken)
+
+ def fetch_flow_mapping_end(self):
+ self.fetch_flow_collection_end(FlowMappingEndToken)
+
+ def fetch_flow_collection_end(self, TokenClass):
+
+ # Reset possible simple key on the current level.
+ self.remove_possible_simple_key()
+
+ # Decrease the flow level.
+ self.flow_level -= 1
+
+ # No simple keys after ']' or '}'.
+ self.allow_simple_key = False
+
+ # Add FLOW-SEQUENCE-END or FLOW-MAPPING-END.
+ start_mark = self.get_mark()
+ self.forward()
+ end_mark = self.get_mark()
+ self.tokens.append(TokenClass(start_mark, end_mark))
+
+ def fetch_flow_entry(self):
+
+ # Simple keys are allowed after ','.
+ self.allow_simple_key = True
+
+ # Reset possible simple key on the current level.
+ self.remove_possible_simple_key()
+
+ # Add FLOW-ENTRY.
+ start_mark = self.get_mark()
+ self.forward()
+ end_mark = self.get_mark()
+ self.tokens.append(FlowEntryToken(start_mark, end_mark))
+
+ def fetch_block_entry(self):
+
+ # Block context needs additional checks.
+ if not self.flow_level:
+
+ # Are we allowed to start a new entry?
+ if not self.allow_simple_key:
+ raise ScannerError(None, None,
+ "sequence entries are not allowed here",
+ self.get_mark())
+
+ # We may need to add BLOCK-SEQUENCE-START.
+ if self.add_indent(self.column):
+ mark = self.get_mark()
+ self.tokens.append(BlockSequenceStartToken(mark, mark))
+
+ # It's an error for the block entry to occur in the flow context,
+ # but we let the parser detect this.
+ else:
+ pass
+
+ # Simple keys are allowed after '-'.
+ self.allow_simple_key = True
+
+ # Reset possible simple key on the current level.
+ self.remove_possible_simple_key()
+
+ # Add BLOCK-ENTRY.
+ start_mark = self.get_mark()
+ self.forward()
+ end_mark = self.get_mark()
+ self.tokens.append(BlockEntryToken(start_mark, end_mark))
+
+ def fetch_key(self):
+
+ # Block context needs additional checks.
+ if not self.flow_level:
+
+ # Are we allowed to start a key (not necessary a simple)?
+ if not self.allow_simple_key:
+ raise ScannerError(None, None,
+ "mapping keys are not allowed here",
+ self.get_mark())
+
+ # We may need to add BLOCK-MAPPING-START.
+ if self.add_indent(self.column):
+ mark = self.get_mark()
+ self.tokens.append(BlockMappingStartToken(mark, mark))
+
+ # Simple keys are allowed after '?' in the block context.
+ self.allow_simple_key = not self.flow_level
+
+ # Reset possible simple key on the current level.
+ self.remove_possible_simple_key()
+
+ # Add KEY.
+ start_mark = self.get_mark()
+ self.forward()
+ end_mark = self.get_mark()
+ self.tokens.append(KeyToken(start_mark, end_mark))
+
+ def fetch_value(self):
+
+ # Do we determine a simple key?
+ if self.flow_level in self.possible_simple_keys:
+
+ # Add KEY.
+ key = self.possible_simple_keys[self.flow_level]
+ del self.possible_simple_keys[self.flow_level]
+ self.tokens.insert(key.token_number-self.tokens_taken,
+ KeyToken(key.mark, key.mark))
+
+ # If this key starts a new block mapping, we need to add
+ # BLOCK-MAPPING-START.
+ if not self.flow_level:
+ if self.add_indent(key.column):
+ self.tokens.insert(key.token_number-self.tokens_taken,
+ BlockMappingStartToken(key.mark, key.mark))
+
+ # There cannot be two simple keys one after another.
+ self.allow_simple_key = False
+
+ # It must be a part of a complex key.
+ else:
+
+ # Block context needs additional checks.
+ # (Do we really need them? They will be caught by the parser
+ # anyway.)
+ if not self.flow_level:
+
+ # We are allowed to start a complex value if and only if
+ # we can start a simple key.
+ if not self.allow_simple_key:
+ raise ScannerError(None, None,
+ "mapping values are not allowed here",
+ self.get_mark())
+
+ # If this value starts a new block mapping, we need to add
+ # BLOCK-MAPPING-START. It will be detected as an error later by
+ # the parser.
+ if not self.flow_level:
+ if self.add_indent(self.column):
+ mark = self.get_mark()
+ self.tokens.append(BlockMappingStartToken(mark, mark))
+
+ # Simple keys are allowed after ':' in the block context.
+ self.allow_simple_key = not self.flow_level
+
+ # Reset possible simple key on the current level.
+ self.remove_possible_simple_key()
+
+ # Add VALUE.
+ start_mark = self.get_mark()
+ self.forward()
+ end_mark = self.get_mark()
+ self.tokens.append(ValueToken(start_mark, end_mark))
+
+ def fetch_alias(self):
+
+ # ALIAS could be a simple key.
+ self.save_possible_simple_key()
+
+ # No simple keys after ALIAS.
+ self.allow_simple_key = False
+
+ # Scan and add ALIAS.
+ self.tokens.append(self.scan_anchor(AliasToken))
+
+ def fetch_anchor(self):
+
+ # ANCHOR could start a simple key.
+ self.save_possible_simple_key()
+
+ # No simple keys after ANCHOR.
+ self.allow_simple_key = False
+
+ # Scan and add ANCHOR.
+ self.tokens.append(self.scan_anchor(AnchorToken))
+
+ def fetch_tag(self):
+
+ # TAG could start a simple key.
+ self.save_possible_simple_key()
+
+ # No simple keys after TAG.
+ self.allow_simple_key = False
+
+ # Scan and add TAG.
+ self.tokens.append(self.scan_tag())
+
+ def fetch_literal(self):
+ self.fetch_block_scalar(style='|')
+
+ def fetch_folded(self):
+ self.fetch_block_scalar(style='>')
+
+ def fetch_block_scalar(self, style):
+
+ # A simple key may follow a block scalar.
+ self.allow_simple_key = True
+
+ # Reset possible simple key on the current level.
+ self.remove_possible_simple_key()
+
+ # Scan and add SCALAR.
+ self.tokens.append(self.scan_block_scalar(style))
+
+ def fetch_single(self):
+ self.fetch_flow_scalar(style='\'')
+
+ def fetch_double(self):
+ self.fetch_flow_scalar(style='"')
+
+ def fetch_flow_scalar(self, style):
+
+ # A flow scalar could be a simple key.
+ self.save_possible_simple_key()
+
+ # No simple keys after flow scalars.
+ self.allow_simple_key = False
+
+ # Scan and add SCALAR.
+ self.tokens.append(self.scan_flow_scalar(style))
+
+ def fetch_plain(self):
+
+ # A plain scalar could be a simple key.
+ self.save_possible_simple_key()
+
+ # No simple keys after plain scalars. But note that `scan_plain` will
+ # change this flag if the scan is finished at the beginning of the
+ # line.
+ self.allow_simple_key = False
+
+ # Scan and add SCALAR. May change `allow_simple_key`.
+ self.tokens.append(self.scan_plain())
+
+ # Checkers.
+
+ def check_directive(self):
+
+ # DIRECTIVE: ^ '%' ...
+ # The '%' indicator is already checked.
+ if self.column == 0:
+ return True
+
+ def check_document_start(self):
+
+ # DOCUMENT-START: ^ '---' (' '|'\n')
+ if self.column == 0:
+ if self.prefix(3) == '---' \
+ and self.peek(3) in '\0 \t\r\n\x85\u2028\u2029':
+ return True
+
+ def check_document_end(self):
+
+ # DOCUMENT-END: ^ '...' (' '|'\n')
+ if self.column == 0:
+ if self.prefix(3) == '...' \
+ and self.peek(3) in '\0 \t\r\n\x85\u2028\u2029':
+ return True
+
+ def check_block_entry(self):
+
+ # BLOCK-ENTRY: '-' (' '|'\n')
+ return self.peek(1) in '\0 \t\r\n\x85\u2028\u2029'
+
+ def check_key(self):
+
+ # KEY(flow context): '?'
+ if self.flow_level:
+ return True
+
+ # KEY(block context): '?' (' '|'\n')
+ else:
+ return self.peek(1) in '\0 \t\r\n\x85\u2028\u2029'
+
+ def check_value(self):
+
+ # VALUE(flow context): ':'
+ if self.flow_level:
+ return True
+
+ # VALUE(block context): ':' (' '|'\n')
+ else:
+ return self.peek(1) in '\0 \t\r\n\x85\u2028\u2029'
+
+ def check_plain(self):
+
+ # A plain scalar may start with any non-space character except:
+ # '-', '?', ':', ',', '[', ']', '{', '}',
+ # '#', '&', '*', '!', '|', '>', '\'', '\"',
+ # '%', '@', '`'.
+ #
+ # It may also start with
+ # '-', '?', ':'
+ # if it is followed by a non-space character.
+ #
+ # Note that we limit the last rule to the block context (except the
+ # '-' character) because we want the flow context to be space
+ # independent.
+ ch = self.peek()
+ return ch not in '\0 \t\r\n\x85\u2028\u2029-?:,[]{}#&*!|>\'\"%@`' \
+ or (self.peek(1) not in '\0 \t\r\n\x85\u2028\u2029'
+ and (ch == '-' or (not self.flow_level and ch in '?:')))
+
+ # Scanners.
+
+ def scan_to_next_token(self):
+ # We ignore spaces, line breaks and comments.
+ # If we find a line break in the block context, we set the flag
+ # `allow_simple_key` on.
+ # The byte order mark is stripped if it's the first character in the
+ # stream. We do not yet support BOM inside the stream as the
+ # specification requires. Any such mark will be considered as a part
+ # of the document.
+ #
+ # TODO: We need to make tab handling rules more sane. A good rule is
+ # Tabs cannot precede tokens
+ # BLOCK-SEQUENCE-START, BLOCK-MAPPING-START, BLOCK-END,
+ # KEY(block), VALUE(block), BLOCK-ENTRY
+ # So the checking code is
+ # if <TAB>:
+ # self.allow_simple_keys = False
+ # We also need to add the check for `allow_simple_keys == True` to
+ # `unwind_indent` before issuing BLOCK-END.
+ # Scanners for block, flow, and plain scalars need to be modified.
+
+ if self.index == 0 and self.peek() == '\uFEFF':
+ self.forward()
+ found = False
+ while not found:
+ while self.peek() == ' ':
+ self.forward()
+ if self.peek() == '#':
+ while self.peek() not in '\0\r\n\x85\u2028\u2029':
+ self.forward()
+ if self.scan_line_break():
+ if not self.flow_level:
+ self.allow_simple_key = True
+ else:
+ found = True
+
+ def scan_directive(self):
+ # See the specification for details.
+ start_mark = self.get_mark()
+ self.forward()
+ name = self.scan_directive_name(start_mark)
+ value = None
+ if name == 'YAML':
+ value = self.scan_yaml_directive_value(start_mark)
+ end_mark = self.get_mark()
+ elif name == 'TAG':
+ value = self.scan_tag_directive_value(start_mark)
+ end_mark = self.get_mark()
+ else:
+ end_mark = self.get_mark()
+ while self.peek() not in '\0\r\n\x85\u2028\u2029':
+ self.forward()
+ self.scan_directive_ignored_line(start_mark)
+ return DirectiveToken(name, value, start_mark, end_mark)
+
+ def scan_directive_name(self, start_mark):
+ # See the specification for details.
+ length = 0
+ ch = self.peek(length)
+ while '0' <= ch <= '9' or 'A' <= ch <= 'Z' or 'a' <= ch <= 'z' \
+ or ch in '-_':
+ length += 1
+ ch = self.peek(length)
+ if not length:
+ raise ScannerError("while scanning a directive", start_mark,
+ "expected alphabetic or numeric character, but found %r"
+ % ch, self.get_mark())
+ value = self.prefix(length)
+ self.forward(length)
+ ch = self.peek()
+ if ch not in '\0 \r\n\x85\u2028\u2029':
+ raise ScannerError("while scanning a directive", start_mark,
+ "expected alphabetic or numeric character, but found %r"
+ % ch, self.get_mark())
+ return value
+
+ def scan_yaml_directive_value(self, start_mark):
+ # See the specification for details.
+ while self.peek() == ' ':
+ self.forward()
+ major = self.scan_yaml_directive_number(start_mark)
+ if self.peek() != '.':
+ raise ScannerError("while scanning a directive", start_mark,
+ "expected a digit or '.', but found %r" % self.peek(),
+ self.get_mark())
+ self.forward()
+ minor = self.scan_yaml_directive_number(start_mark)
+ if self.peek() not in '\0 \r\n\x85\u2028\u2029':
+ raise ScannerError("while scanning a directive", start_mark,
+ "expected a digit or ' ', but found %r" % self.peek(),
+ self.get_mark())
+ return (major, minor)
+
+ def scan_yaml_directive_number(self, start_mark):
+ # See the specification for details.
+ ch = self.peek()
+ if not ('0' <= ch <= '9'):
+ raise ScannerError("while scanning a directive", start_mark,
+ "expected a digit, but found %r" % ch, self.get_mark())
+ length = 0
+ while '0' <= self.peek(length) <= '9':
+ length += 1
+ value = int(self.prefix(length))
+ self.forward(length)
+ return value
+
+ def scan_tag_directive_value(self, start_mark):
+ # See the specification for details.
+ while self.peek() == ' ':
+ self.forward()
+ handle = self.scan_tag_directive_handle(start_mark)
+ while self.peek() == ' ':
+ self.forward()
+ prefix = self.scan_tag_directive_prefix(start_mark)
+ return (handle, prefix)
+
+ def scan_tag_directive_handle(self, start_mark):
+ # See the specification for details.
+ value = self.scan_tag_handle('directive', start_mark)
+ ch = self.peek()
+ if ch != ' ':
+ raise ScannerError("while scanning a directive", start_mark,
+ "expected ' ', but found %r" % ch, self.get_mark())
+ return value
+
+ def scan_tag_directive_prefix(self, start_mark):
+ # See the specification for details.
+ value = self.scan_tag_uri('directive', start_mark)
+ ch = self.peek()
+ if ch not in '\0 \r\n\x85\u2028\u2029':
+ raise ScannerError("while scanning a directive", start_mark,
+ "expected ' ', but found %r" % ch, self.get_mark())
+ return value
+
+ def scan_directive_ignored_line(self, start_mark):
+ # See the specification for details.
+ while self.peek() == ' ':
+ self.forward()
+ if self.peek() == '#':
+ while self.peek() not in '\0\r\n\x85\u2028\u2029':
+ self.forward()
+ ch = self.peek()
+ if ch not in '\0\r\n\x85\u2028\u2029':
+ raise ScannerError("while scanning a directive", start_mark,
+ "expected a comment or a line break, but found %r"
+ % ch, self.get_mark())
+ self.scan_line_break()
+
+ def scan_anchor(self, TokenClass):
+ # The specification does not restrict characters for anchors and
+ # aliases. This may lead to problems, for instance, the document:
+ # [ *alias, value ]
+ # can be interpreted in two ways, as
+ # [ "value" ]
+ # and
+ # [ *alias , "value" ]
+ # Therefore we restrict aliases to numbers and ASCII letters.
+ start_mark = self.get_mark()
+ indicator = self.peek()
+ if indicator == '*':
+ name = 'alias'
+ else:
+ name = 'anchor'
+ self.forward()
+ length = 0
+ ch = self.peek(length)
+ while '0' <= ch <= '9' or 'A' <= ch <= 'Z' or 'a' <= ch <= 'z' \
+ or ch in '-_':
+ length += 1
+ ch = self.peek(length)
+ if not length:
+ raise ScannerError("while scanning an %s" % name, start_mark,
+ "expected alphabetic or numeric character, but found %r"
+ % ch, self.get_mark())
+ value = self.prefix(length)
+ self.forward(length)
+ ch = self.peek()
+ if ch not in '\0 \t\r\n\x85\u2028\u2029?:,]}%@`':
+ raise ScannerError("while scanning an %s" % name, start_mark,
+ "expected alphabetic or numeric character, but found %r"
+ % ch, self.get_mark())
+ end_mark = self.get_mark()
+ return TokenClass(value, start_mark, end_mark)
+
+ def scan_tag(self):
+ # See the specification for details.
+ start_mark = self.get_mark()
+ ch = self.peek(1)
+ if ch == '<':
+ handle = None
+ self.forward(2)
+ suffix = self.scan_tag_uri('tag', start_mark)
+ if self.peek() != '>':
+ raise ScannerError("while parsing a tag", start_mark,
+ "expected '>', but found %r" % self.peek(),
+ self.get_mark())
+ self.forward()
+ elif ch in '\0 \t\r\n\x85\u2028\u2029':
+ handle = None
+ suffix = '!'
+ self.forward()
+ else:
+ length = 1
+ use_handle = False
+ while ch not in '\0 \r\n\x85\u2028\u2029':
+ if ch == '!':
+ use_handle = True
+ break
+ length += 1
+ ch = self.peek(length)
+ handle = '!'
+ if use_handle:
+ handle = self.scan_tag_handle('tag', start_mark)
+ else:
+ handle = '!'
+ self.forward()
+ suffix = self.scan_tag_uri('tag', start_mark)
+ ch = self.peek()
+ if ch not in '\0 \r\n\x85\u2028\u2029':
+ raise ScannerError("while scanning a tag", start_mark,
+ "expected ' ', but found %r" % ch, self.get_mark())
+ value = (handle, suffix)
+ end_mark = self.get_mark()
+ return TagToken(value, start_mark, end_mark)
+
+ def scan_block_scalar(self, style):
+ # See the specification for details.
+
+ if style == '>':
+ folded = True
+ else:
+ folded = False
+
+ chunks = []
+ start_mark = self.get_mark()
+
+ # Scan the header.
+ self.forward()
+ chomping, increment = self.scan_block_scalar_indicators(start_mark)
+ self.scan_block_scalar_ignored_line(start_mark)
+
+ # Determine the indentation level and go to the first non-empty line.
+ min_indent = self.indent+1
+ if min_indent < 1:
+ min_indent = 1
+ if increment is None:
+ breaks, max_indent, end_mark = self.scan_block_scalar_indentation()
+ indent = max(min_indent, max_indent)
+ else:
+ indent = min_indent+increment-1
+ breaks, end_mark = self.scan_block_scalar_breaks(indent)
+ line_break = ''
+
+ # Scan the inner part of the block scalar.
+ while self.column == indent and self.peek() != '\0':
+ chunks.extend(breaks)
+ leading_non_space = self.peek() not in ' \t'
+ length = 0
+ while self.peek(length) not in '\0\r\n\x85\u2028\u2029':
+ length += 1
+ chunks.append(self.prefix(length))
+ self.forward(length)
+ line_break = self.scan_line_break()
+ breaks, end_mark = self.scan_block_scalar_breaks(indent)
+ if self.column == indent and self.peek() != '\0':
+
+ # Unfortunately, folding rules are ambiguous.
+ #
+ # This is the folding according to the specification:
+
+ if folded and line_break == '\n' \
+ and leading_non_space and self.peek() not in ' \t':
+ if not breaks:
+ chunks.append(' ')
+ else:
+ chunks.append(line_break)
+
+ # This is Clark Evans's interpretation (also in the spec
+ # examples):
+ #
+ #if folded and line_break == '\n':
+ # if not breaks:
+ # if self.peek() not in ' \t':
+ # chunks.append(' ')
+ # else:
+ # chunks.append(line_break)
+ #else:
+ # chunks.append(line_break)
+ else:
+ break
+
+ # Chomp the tail.
+ if chomping is not False:
+ chunks.append(line_break)
+ if chomping is True:
+ chunks.extend(breaks)
+
+ # We are done.
+ return ScalarToken(''.join(chunks), False, start_mark, end_mark,
+ style)
+
+ def scan_block_scalar_indicators(self, start_mark):
+ # See the specification for details.
+ chomping = None
+ increment = None
+ ch = self.peek()
+ if ch in '+-':
+ if ch == '+':
+ chomping = True
+ else:
+ chomping = False
+ self.forward()
+ ch = self.peek()
+ if ch in '0123456789':
+ increment = int(ch)
+ if increment == 0:
+ raise ScannerError("while scanning a block scalar", start_mark,
+ "expected indentation indicator in the range 1-9, but found 0",
+ self.get_mark())
+ self.forward()
+ elif ch in '0123456789':
+ increment = int(ch)
+ if increment == 0:
+ raise ScannerError("while scanning a block scalar", start_mark,
+ "expected indentation indicator in the range 1-9, but found 0",
+ self.get_mark())
+ self.forward()
+ ch = self.peek()
+ if ch in '+-':
+ if ch == '+':
+ chomping = True
+ else:
+ chomping = False
+ self.forward()
+ ch = self.peek()
+ if ch not in '\0 \r\n\x85\u2028\u2029':
+ raise ScannerError("while scanning a block scalar", start_mark,
+ "expected chomping or indentation indicators, but found %r"
+ % ch, self.get_mark())
+ return chomping, increment
+
+ def scan_block_scalar_ignored_line(self, start_mark):
+ # See the specification for details.
+ while self.peek() == ' ':
+ self.forward()
+ if self.peek() == '#':
+ while self.peek() not in '\0\r\n\x85\u2028\u2029':
+ self.forward()
+ ch = self.peek()
+ if ch not in '\0\r\n\x85\u2028\u2029':
+ raise ScannerError("while scanning a block scalar", start_mark,
+ "expected a comment or a line break, but found %r" % ch,
+ self.get_mark())
+ self.scan_line_break()
+
+ def scan_block_scalar_indentation(self):
+ # See the specification for details.
+ chunks = []
+ max_indent = 0
+ end_mark = self.get_mark()
+ while self.peek() in ' \r\n\x85\u2028\u2029':
+ if self.peek() != ' ':
+ chunks.append(self.scan_line_break())
+ end_mark = self.get_mark()
+ else:
+ self.forward()
+ if self.column > max_indent:
+ max_indent = self.column
+ return chunks, max_indent, end_mark
+
+ def scan_block_scalar_breaks(self, indent):
+ # See the specification for details.
+ chunks = []
+ end_mark = self.get_mark()
+ while self.column < indent and self.peek() == ' ':
+ self.forward()
+ while self.peek() in '\r\n\x85\u2028\u2029':
+ chunks.append(self.scan_line_break())
+ end_mark = self.get_mark()
+ while self.column < indent and self.peek() == ' ':
+ self.forward()
+ return chunks, end_mark
+
+ def scan_flow_scalar(self, style):
+ # See the specification for details.
+ # Note that we loose indentation rules for quoted scalars. Quoted
+ # scalars don't need to adhere indentation because " and ' clearly
+ # mark the beginning and the end of them. Therefore we are less
+ # restrictive then the specification requires. We only need to check
+ # that document separators are not included in scalars.
+ if style == '"':
+ double = True
+ else:
+ double = False
+ chunks = []
+ start_mark = self.get_mark()
+ quote = self.peek()
+ self.forward()
+ chunks.extend(self.scan_flow_scalar_non_spaces(double, start_mark))
+ while self.peek() != quote:
+ chunks.extend(self.scan_flow_scalar_spaces(double, start_mark))
+ chunks.extend(self.scan_flow_scalar_non_spaces(double, start_mark))
+ self.forward()
+ end_mark = self.get_mark()
+ return ScalarToken(''.join(chunks), False, start_mark, end_mark,
+ style)
+
+ ESCAPE_REPLACEMENTS = {
+ '0': '\0',
+ 'a': '\x07',
+ 'b': '\x08',
+ 't': '\x09',
+ '\t': '\x09',
+ 'n': '\x0A',
+ 'v': '\x0B',
+ 'f': '\x0C',
+ 'r': '\x0D',
+ 'e': '\x1B',
+ ' ': '\x20',
+ '\"': '\"',
+ '\\': '\\',
+ '/': '/',
+ 'N': '\x85',
+ '_': '\xA0',
+ 'L': '\u2028',
+ 'P': '\u2029',
+ }
+
+ ESCAPE_CODES = {
+ 'x': 2,
+ 'u': 4,
+ 'U': 8,
+ }
+
+ def scan_flow_scalar_non_spaces(self, double, start_mark):
+ # See the specification for details.
+ chunks = []
+ while True:
+ length = 0
+ while self.peek(length) not in '\'\"\\\0 \t\r\n\x85\u2028\u2029':
+ length += 1
+ if length:
+ chunks.append(self.prefix(length))
+ self.forward(length)
+ ch = self.peek()
+ if not double and ch == '\'' and self.peek(1) == '\'':
+ chunks.append('\'')
+ self.forward(2)
+ elif (double and ch == '\'') or (not double and ch in '\"\\'):
+ chunks.append(ch)
+ self.forward()
+ elif double and ch == '\\':
+ self.forward()
+ ch = self.peek()
+ if ch in self.ESCAPE_REPLACEMENTS:
+ chunks.append(self.ESCAPE_REPLACEMENTS[ch])
+ self.forward()
+ elif ch in self.ESCAPE_CODES:
+ length = self.ESCAPE_CODES[ch]
+ self.forward()
+ for k in range(length):
+ if self.peek(k) not in '0123456789ABCDEFabcdef':
+ raise ScannerError("while scanning a double-quoted scalar", start_mark,
+ "expected escape sequence of %d hexadecimal numbers, but found %r" %
+ (length, self.peek(k)), self.get_mark())
+ code = int(self.prefix(length), 16)
+ chunks.append(chr(code))
+ self.forward(length)
+ elif ch in '\r\n\x85\u2028\u2029':
+ self.scan_line_break()
+ chunks.extend(self.scan_flow_scalar_breaks(double, start_mark))
+ else:
+ raise ScannerError("while scanning a double-quoted scalar", start_mark,
+ "found unknown escape character %r" % ch, self.get_mark())
+ else:
+ return chunks
+
+ def scan_flow_scalar_spaces(self, double, start_mark):
+ # See the specification for details.
+ chunks = []
+ length = 0
+ while self.peek(length) in ' \t':
+ length += 1
+ whitespaces = self.prefix(length)
+ self.forward(length)
+ ch = self.peek()
+ if ch == '\0':
+ raise ScannerError("while scanning a quoted scalar", start_mark,
+ "found unexpected end of stream", self.get_mark())
+ elif ch in '\r\n\x85\u2028\u2029':
+ line_break = self.scan_line_break()
+ breaks = self.scan_flow_scalar_breaks(double, start_mark)
+ if line_break != '\n':
+ chunks.append(line_break)
+ elif not breaks:
+ chunks.append(' ')
+ chunks.extend(breaks)
+ else:
+ chunks.append(whitespaces)
+ return chunks
+
+ def scan_flow_scalar_breaks(self, double, start_mark):
+ # See the specification for details.
+ chunks = []
+ while True:
+ # Instead of checking indentation, we check for document
+ # separators.
+ prefix = self.prefix(3)
+ if (prefix == '---' or prefix == '...') \
+ and self.peek(3) in '\0 \t\r\n\x85\u2028\u2029':
+ raise ScannerError("while scanning a quoted scalar", start_mark,
+ "found unexpected document separator", self.get_mark())
+ while self.peek() in ' \t':
+ self.forward()
+ if self.peek() in '\r\n\x85\u2028\u2029':
+ chunks.append(self.scan_line_break())
+ else:
+ return chunks
+
+ def scan_plain(self):
+ # See the specification for details.
+ # We add an additional restriction for the flow context:
+ # plain scalars in the flow context cannot contain ',' or '?'.
+ # We also keep track of the `allow_simple_key` flag here.
+ # Indentation rules are loosed for the flow context.
+ chunks = []
+ start_mark = self.get_mark()
+ end_mark = start_mark
+ indent = self.indent+1
+ # We allow zero indentation for scalars, but then we need to check for
+ # document separators at the beginning of the line.
+ #if indent == 0:
+ # indent = 1
+ spaces = []
+ while True:
+ length = 0
+ if self.peek() == '#':
+ break
+ while True:
+ ch = self.peek(length)
+ if ch in '\0 \t\r\n\x85\u2028\u2029' \
+ or (ch == ':' and
+ self.peek(length+1) in '\0 \t\r\n\x85\u2028\u2029'
+ + (u',[]{}' if self.flow_level else u''))\
+ or (self.flow_level and ch in ',?[]{}'):
+ break
+ length += 1
+ if length == 0:
+ break
+ self.allow_simple_key = False
+ chunks.extend(spaces)
+ chunks.append(self.prefix(length))
+ self.forward(length)
+ end_mark = self.get_mark()
+ spaces = self.scan_plain_spaces(indent, start_mark)
+ if not spaces or self.peek() == '#' \
+ or (not self.flow_level and self.column < indent):
+ break
+ return ScalarToken(''.join(chunks), True, start_mark, end_mark)
+
+ def scan_plain_spaces(self, indent, start_mark):
+ # See the specification for details.
+ # The specification is really confusing about tabs in plain scalars.
+ # We just forbid them completely. Do not use tabs in YAML!
+ chunks = []
+ length = 0
+ while self.peek(length) in ' ':
+ length += 1
+ whitespaces = self.prefix(length)
+ self.forward(length)
+ ch = self.peek()
+ if ch in '\r\n\x85\u2028\u2029':
+ line_break = self.scan_line_break()
+ self.allow_simple_key = True
+ prefix = self.prefix(3)
+ if (prefix == '---' or prefix == '...') \
+ and self.peek(3) in '\0 \t\r\n\x85\u2028\u2029':
+ return
+ breaks = []
+ while self.peek() in ' \r\n\x85\u2028\u2029':
+ if self.peek() == ' ':
+ self.forward()
+ else:
+ breaks.append(self.scan_line_break())
+ prefix = self.prefix(3)
+ if (prefix == '---' or prefix == '...') \
+ and self.peek(3) in '\0 \t\r\n\x85\u2028\u2029':
+ return
+ if line_break != '\n':
+ chunks.append(line_break)
+ elif not breaks:
+ chunks.append(' ')
+ chunks.extend(breaks)
+ elif whitespaces:
+ chunks.append(whitespaces)
+ return chunks
+
+ def scan_tag_handle(self, name, start_mark):
+ # See the specification for details.
+ # For some strange reasons, the specification does not allow '_' in
+ # tag handles. I have allowed it anyway.
+ ch = self.peek()
+ if ch != '!':
+ raise ScannerError("while scanning a %s" % name, start_mark,
+ "expected '!', but found %r" % ch, self.get_mark())
+ length = 1
+ ch = self.peek(length)
+ if ch != ' ':
+ while '0' <= ch <= '9' or 'A' <= ch <= 'Z' or 'a' <= ch <= 'z' \
+ or ch in '-_':
+ length += 1
+ ch = self.peek(length)
+ if ch != '!':
+ self.forward(length)
+ raise ScannerError("while scanning a %s" % name, start_mark,
+ "expected '!', but found %r" % ch, self.get_mark())
+ length += 1
+ value = self.prefix(length)
+ self.forward(length)
+ return value
+
+ def scan_tag_uri(self, name, start_mark):
+ # See the specification for details.
+ # Note: we do not check if URI is well-formed.
+ chunks = []
+ length = 0
+ ch = self.peek(length)
+ while '0' <= ch <= '9' or 'A' <= ch <= 'Z' or 'a' <= ch <= 'z' \
+ or ch in '-;/?:@&=+$,_.!~*\'()[]%':
+ if ch == '%':
+ chunks.append(self.prefix(length))
+ self.forward(length)
+ length = 0
+ chunks.append(self.scan_uri_escapes(name, start_mark))
+ else:
+ length += 1
+ ch = self.peek(length)
+ if length:
+ chunks.append(self.prefix(length))
+ self.forward(length)
+ length = 0
+ if not chunks:
+ raise ScannerError("while parsing a %s" % name, start_mark,
+ "expected URI, but found %r" % ch, self.get_mark())
+ return ''.join(chunks)
+
+ def scan_uri_escapes(self, name, start_mark):
+ # See the specification for details.
+ codes = []
+ mark = self.get_mark()
+ while self.peek() == '%':
+ self.forward()
+ for k in range(2):
+ if self.peek(k) not in '0123456789ABCDEFabcdef':
+ raise ScannerError("while scanning a %s" % name, start_mark,
+ "expected URI escape sequence of 2 hexadecimal numbers, but found %r"
+ % self.peek(k), self.get_mark())
+ codes.append(int(self.prefix(2), 16))
+ self.forward(2)
+ try:
+ value = bytes(codes).decode('utf-8')
+ except UnicodeDecodeError as exc:
+ raise ScannerError("while scanning a %s" % name, start_mark, str(exc), mark)
+ return value
+
+ def scan_line_break(self):
+ # Transforms:
+ # '\r\n' : '\n'
+ # '\r' : '\n'
+ # '\n' : '\n'
+ # '\x85' : '\n'
+ # '\u2028' : '\u2028'
+ # '\u2029 : '\u2029'
+ # default : ''
+ ch = self.peek()
+ if ch in '\r\n\x85':
+ if self.prefix(2) == '\r\n':
+ self.forward(2)
+ else:
+ self.forward()
+ return '\n'
+ elif ch in '\u2028\u2029':
+ self.forward()
+ return ch
+ return ''
diff --git a/third_party/python/PyYAML/lib/yaml/serializer.py b/third_party/python/PyYAML/lib/yaml/serializer.py
new file mode 100644
index 0000000000..fe911e67ae
--- /dev/null
+++ b/third_party/python/PyYAML/lib/yaml/serializer.py
@@ -0,0 +1,111 @@
+
+__all__ = ['Serializer', 'SerializerError']
+
+from .error import YAMLError
+from .events import *
+from .nodes import *
+
+class SerializerError(YAMLError):
+ pass
+
+class Serializer:
+
+ ANCHOR_TEMPLATE = 'id%03d'
+
+ def __init__(self, encoding=None,
+ explicit_start=None, explicit_end=None, version=None, tags=None):
+ self.use_encoding = encoding
+ self.use_explicit_start = explicit_start
+ self.use_explicit_end = explicit_end
+ self.use_version = version
+ self.use_tags = tags
+ self.serialized_nodes = {}
+ self.anchors = {}
+ self.last_anchor_id = 0
+ self.closed = None
+
+ def open(self):
+ if self.closed is None:
+ self.emit(StreamStartEvent(encoding=self.use_encoding))
+ self.closed = False
+ elif self.closed:
+ raise SerializerError("serializer is closed")
+ else:
+ raise SerializerError("serializer is already opened")
+
+ def close(self):
+ if self.closed is None:
+ raise SerializerError("serializer is not opened")
+ elif not self.closed:
+ self.emit(StreamEndEvent())
+ self.closed = True
+
+ #def __del__(self):
+ # self.close()
+
+ def serialize(self, node):
+ if self.closed is None:
+ raise SerializerError("serializer is not opened")
+ elif self.closed:
+ raise SerializerError("serializer is closed")
+ self.emit(DocumentStartEvent(explicit=self.use_explicit_start,
+ version=self.use_version, tags=self.use_tags))
+ self.anchor_node(node)
+ self.serialize_node(node, None, None)
+ self.emit(DocumentEndEvent(explicit=self.use_explicit_end))
+ self.serialized_nodes = {}
+ self.anchors = {}
+ self.last_anchor_id = 0
+
+ def anchor_node(self, node):
+ if node in self.anchors:
+ if self.anchors[node] is None:
+ self.anchors[node] = self.generate_anchor(node)
+ else:
+ self.anchors[node] = None
+ if isinstance(node, SequenceNode):
+ for item in node.value:
+ self.anchor_node(item)
+ elif isinstance(node, MappingNode):
+ for key, value in node.value:
+ self.anchor_node(key)
+ self.anchor_node(value)
+
+ def generate_anchor(self, node):
+ self.last_anchor_id += 1
+ return self.ANCHOR_TEMPLATE % self.last_anchor_id
+
+ def serialize_node(self, node, parent, index):
+ alias = self.anchors[node]
+ if node in self.serialized_nodes:
+ self.emit(AliasEvent(alias))
+ else:
+ self.serialized_nodes[node] = True
+ self.descend_resolver(parent, index)
+ if isinstance(node, ScalarNode):
+ detected_tag = self.resolve(ScalarNode, node.value, (True, False))
+ default_tag = self.resolve(ScalarNode, node.value, (False, True))
+ implicit = (node.tag == detected_tag), (node.tag == default_tag)
+ self.emit(ScalarEvent(alias, node.tag, implicit, node.value,
+ style=node.style))
+ elif isinstance(node, SequenceNode):
+ implicit = (node.tag
+ == self.resolve(SequenceNode, node.value, True))
+ self.emit(SequenceStartEvent(alias, node.tag, implicit,
+ flow_style=node.flow_style))
+ index = 0
+ for item in node.value:
+ self.serialize_node(item, node, index)
+ index += 1
+ self.emit(SequenceEndEvent())
+ elif isinstance(node, MappingNode):
+ implicit = (node.tag
+ == self.resolve(MappingNode, node.value, True))
+ self.emit(MappingStartEvent(alias, node.tag, implicit,
+ flow_style=node.flow_style))
+ for key, value in node.value:
+ self.serialize_node(key, node, None)
+ self.serialize_node(value, node, key)
+ self.emit(MappingEndEvent())
+ self.ascend_resolver()
+
diff --git a/third_party/python/PyYAML/lib/yaml/tokens.py b/third_party/python/PyYAML/lib/yaml/tokens.py
new file mode 100644
index 0000000000..4d0b48a394
--- /dev/null
+++ b/third_party/python/PyYAML/lib/yaml/tokens.py
@@ -0,0 +1,104 @@
+
+class Token(object):
+ def __init__(self, start_mark, end_mark):
+ self.start_mark = start_mark
+ self.end_mark = end_mark
+ def __repr__(self):
+ attributes = [key for key in self.__dict__
+ if not key.endswith('_mark')]
+ attributes.sort()
+ arguments = ', '.join(['%s=%r' % (key, getattr(self, key))
+ for key in attributes])
+ return '%s(%s)' % (self.__class__.__name__, arguments)
+
+#class BOMToken(Token):
+# id = '<byte order mark>'
+
+class DirectiveToken(Token):
+ id = '<directive>'
+ def __init__(self, name, value, start_mark, end_mark):
+ self.name = name
+ self.value = value
+ self.start_mark = start_mark
+ self.end_mark = end_mark
+
+class DocumentStartToken(Token):
+ id = '<document start>'
+
+class DocumentEndToken(Token):
+ id = '<document end>'
+
+class StreamStartToken(Token):
+ id = '<stream start>'
+ def __init__(self, start_mark=None, end_mark=None,
+ encoding=None):
+ self.start_mark = start_mark
+ self.end_mark = end_mark
+ self.encoding = encoding
+
+class StreamEndToken(Token):
+ id = '<stream end>'
+
+class BlockSequenceStartToken(Token):
+ id = '<block sequence start>'
+
+class BlockMappingStartToken(Token):
+ id = '<block mapping start>'
+
+class BlockEndToken(Token):
+ id = '<block end>'
+
+class FlowSequenceStartToken(Token):
+ id = '['
+
+class FlowMappingStartToken(Token):
+ id = '{'
+
+class FlowSequenceEndToken(Token):
+ id = ']'
+
+class FlowMappingEndToken(Token):
+ id = '}'
+
+class KeyToken(Token):
+ id = '?'
+
+class ValueToken(Token):
+ id = ':'
+
+class BlockEntryToken(Token):
+ id = '-'
+
+class FlowEntryToken(Token):
+ id = ','
+
+class AliasToken(Token):
+ id = '<alias>'
+ def __init__(self, value, start_mark, end_mark):
+ self.value = value
+ self.start_mark = start_mark
+ self.end_mark = end_mark
+
+class AnchorToken(Token):
+ id = '<anchor>'
+ def __init__(self, value, start_mark, end_mark):
+ self.value = value
+ self.start_mark = start_mark
+ self.end_mark = end_mark
+
+class TagToken(Token):
+ id = '<tag>'
+ def __init__(self, value, start_mark, end_mark):
+ self.value = value
+ self.start_mark = start_mark
+ self.end_mark = end_mark
+
+class ScalarToken(Token):
+ id = '<scalar>'
+ def __init__(self, value, plain, start_mark, end_mark, style=None):
+ self.value = value
+ self.plain = plain
+ self.start_mark = start_mark
+ self.end_mark = end_mark
+ self.style = style
+
diff --git a/third_party/python/PyYAML/pyproject.toml b/third_party/python/PyYAML/pyproject.toml
new file mode 100644
index 0000000000..4bc04c0dad
--- /dev/null
+++ b/third_party/python/PyYAML/pyproject.toml
@@ -0,0 +1,3 @@
+[build-system]
+requires = ["setuptools", "wheel", "Cython<3.0"]
+build-backend = "setuptools.build_meta"
diff --git a/third_party/python/PyYAML/setup.cfg b/third_party/python/PyYAML/setup.cfg
new file mode 100644
index 0000000000..8bfd5a12f8
--- /dev/null
+++ b/third_party/python/PyYAML/setup.cfg
@@ -0,0 +1,4 @@
+[egg_info]
+tag_build =
+tag_date = 0
+
diff --git a/third_party/python/PyYAML/setup.py b/third_party/python/PyYAML/setup.py
new file mode 100644
index 0000000000..65b0ea0e06
--- /dev/null
+++ b/third_party/python/PyYAML/setup.py
@@ -0,0 +1,314 @@
+
+NAME = 'PyYAML'
+VERSION = '6.0.1'
+DESCRIPTION = "YAML parser and emitter for Python"
+LONG_DESCRIPTION = """\
+YAML is a data serialization format designed for human readability
+and interaction with scripting languages. PyYAML is a YAML parser
+and emitter for Python.
+
+PyYAML features a complete YAML 1.1 parser, Unicode support, pickle
+support, capable extension API, and sensible error messages. PyYAML
+supports standard YAML tags and provides Python-specific tags that
+allow to represent an arbitrary Python object.
+
+PyYAML is applicable for a broad range of tasks from complex
+configuration files to object serialization and persistence."""
+AUTHOR = "Kirill Simonov"
+AUTHOR_EMAIL = 'xi@resolvent.net'
+LICENSE = "MIT"
+PLATFORMS = "Any"
+URL = "https://pyyaml.org/"
+DOWNLOAD_URL = "https://pypi.org/project/PyYAML/"
+CLASSIFIERS = [
+ "Development Status :: 5 - Production/Stable",
+ "Intended Audience :: Developers",
+ "License :: OSI Approved :: MIT License",
+ "Operating System :: OS Independent",
+ "Programming Language :: Cython",
+ "Programming Language :: Python",
+ "Programming Language :: Python :: 3",
+ "Programming Language :: Python :: 3.6",
+ "Programming Language :: Python :: 3.7",
+ "Programming Language :: Python :: 3.8",
+ "Programming Language :: Python :: 3.9",
+ "Programming Language :: Python :: 3.10",
+ "Programming Language :: Python :: 3.11",
+ "Programming Language :: Python :: Implementation :: CPython",
+ "Programming Language :: Python :: Implementation :: PyPy",
+ "Topic :: Software Development :: Libraries :: Python Modules",
+ "Topic :: Text Processing :: Markup",
+]
+PROJECT_URLS = {
+ 'Bug Tracker': 'https://github.com/yaml/pyyaml/issues',
+ 'CI': 'https://github.com/yaml/pyyaml/actions',
+ 'Documentation': 'https://pyyaml.org/wiki/PyYAMLDocumentation',
+ 'Mailing lists': 'http://lists.sourceforge.net/lists/listinfo/yaml-core',
+ 'Source Code': 'https://github.com/yaml/pyyaml',
+}
+
+LIBYAML_CHECK = """
+#include <yaml.h>
+
+int main(void) {
+ yaml_parser_t parser;
+ yaml_emitter_t emitter;
+
+ yaml_parser_initialize(&parser);
+ yaml_parser_delete(&parser);
+
+ yaml_emitter_initialize(&emitter);
+ yaml_emitter_delete(&emitter);
+
+ return 0;
+}
+"""
+
+
+import sys, os, os.path, pathlib, platform, shutil, tempfile, warnings
+
+# for newer setuptools, enable the embedded distutils before importing setuptools/distutils to avoid warnings
+os.environ['SETUPTOOLS_USE_DISTUTILS'] = 'local'
+
+from setuptools import setup, Command, Distribution as _Distribution, Extension as _Extension
+from setuptools.command.build_ext import build_ext as _build_ext
+# NB: distutils imports must remain below setuptools to ensure we use the embedded version
+from distutils import log
+from distutils.errors import DistutilsError, CompileError, LinkError, DistutilsPlatformError
+
+with_cython = False
+if 'sdist' in sys.argv or os.environ.get('PYYAML_FORCE_CYTHON') == '1':
+ # we need cython here
+ with_cython = True
+try:
+ from Cython.Distutils.extension import Extension as _Extension
+ from Cython.Distutils import build_ext as _build_ext
+ with_cython = True
+except ImportError:
+ if with_cython:
+ raise
+
+try:
+ from wheel.bdist_wheel import bdist_wheel
+except ImportError:
+ bdist_wheel = None
+
+
+# on Windows, disable wheel generation warning noise
+windows_ignore_warnings = [
+"Unknown distribution option: 'python_requires'",
+"Config variable 'Py_DEBUG' is unset",
+"Config variable 'WITH_PYMALLOC' is unset",
+"Config variable 'Py_UNICODE_SIZE' is unset",
+"Cython directive 'language_level' not set"
+]
+
+if platform.system() == 'Windows':
+ for w in windows_ignore_warnings:
+ warnings.filterwarnings('ignore', w)
+
+
+class Distribution(_Distribution):
+ def __init__(self, attrs=None):
+ _Distribution.__init__(self, attrs)
+ if not self.ext_modules:
+ return
+ for idx in range(len(self.ext_modules)-1, -1, -1):
+ ext = self.ext_modules[idx]
+ if not isinstance(ext, Extension):
+ continue
+ setattr(self, ext.attr_name, None)
+ self.global_options = [
+ (ext.option_name, None,
+ "include %s (default if %s is available)"
+ % (ext.feature_description, ext.feature_name)),
+ (ext.neg_option_name, None,
+ "exclude %s" % ext.feature_description),
+ ] + self.global_options
+ self.negative_opt = self.negative_opt.copy()
+ self.negative_opt[ext.neg_option_name] = ext.option_name
+
+ def has_ext_modules(self):
+ if not self.ext_modules:
+ return False
+ for ext in self.ext_modules:
+ with_ext = self.ext_status(ext)
+ if with_ext is None or with_ext:
+ return True
+ return False
+
+ def ext_status(self, ext):
+ implementation = platform.python_implementation()
+ if implementation not in ['CPython', 'PyPy']:
+ return False
+ if isinstance(ext, Extension):
+ # the "build by default" behavior is implemented by this returning None
+ with_ext = getattr(self, ext.attr_name) or os.environ.get('PYYAML_FORCE_{0}'.format(ext.feature_name.upper()))
+ try:
+ with_ext = int(with_ext) # attempt coerce envvar to int
+ except TypeError:
+ pass
+ return with_ext
+ else:
+ return True
+
+
+class Extension(_Extension):
+
+ def __init__(self, name, sources, feature_name, feature_description,
+ feature_check, **kwds):
+ if not with_cython:
+ for filename in sources[:]:
+ base, ext = os.path.splitext(filename)
+ if ext == '.pyx':
+ sources.remove(filename)
+ sources.append('%s.c' % base)
+ _Extension.__init__(self, name, sources, **kwds)
+ self.feature_name = feature_name
+ self.feature_description = feature_description
+ self.feature_check = feature_check
+ self.attr_name = 'with_' + feature_name.replace('-', '_')
+ self.option_name = 'with-' + feature_name
+ self.neg_option_name = 'without-' + feature_name
+
+
+class build_ext(_build_ext):
+
+ def run(self):
+ optional = True
+ disabled = True
+ for ext in self.extensions:
+ with_ext = self.distribution.ext_status(ext)
+ if with_ext is None:
+ disabled = False
+ elif with_ext:
+ optional = False
+ disabled = False
+ break
+ if disabled:
+ return
+ try:
+ _build_ext.run(self)
+ except DistutilsPlatformError:
+ exc = sys.exc_info()[1]
+ if optional:
+ log.warn(str(exc))
+ log.warn("skipping build_ext")
+ else:
+ raise
+
+ def get_source_files(self):
+ self.check_extensions_list(self.extensions)
+ filenames = []
+ for ext in self.extensions:
+ if with_cython:
+ self.cython_sources(ext.sources, ext)
+ for filename in ext.sources:
+ filenames.append(filename)
+ base = os.path.splitext(filename)[0]
+ for ext in ['c', 'h', 'pyx', 'pxd']:
+ filename = '%s.%s' % (base, ext)
+ if filename not in filenames and os.path.isfile(filename):
+ filenames.append(filename)
+ return filenames
+
+ def get_outputs(self):
+ self.check_extensions_list(self.extensions)
+ outputs = []
+ for ext in self.extensions:
+ fullname = self.get_ext_fullname(ext.name)
+ filename = os.path.join(self.build_lib,
+ self.get_ext_filename(fullname))
+ if os.path.isfile(filename):
+ outputs.append(filename)
+ return outputs
+
+ def build_extensions(self):
+ self.check_extensions_list(self.extensions)
+ for ext in self.extensions:
+ with_ext = self.distribution.ext_status(ext)
+ if with_ext is not None and not with_ext:
+ continue
+ if with_cython:
+ ext.sources = self.cython_sources(ext.sources, ext)
+ try:
+ self.build_extension(ext)
+ except (CompileError, LinkError):
+ if with_ext is not None:
+ raise
+ log.warn("Error compiling module, falling back to pure Python")
+
+
+class test(Command):
+
+ user_options = []
+
+ def initialize_options(self):
+ pass
+
+ def finalize_options(self):
+ pass
+
+ def run(self):
+ build_cmd = self.get_finalized_command('build')
+ build_cmd.run()
+
+ # running the tests this way can pollute the post-MANIFEST build sources
+ # (see https://github.com/yaml/pyyaml/issues/527#issuecomment-921058344)
+ # until we remove the test command, run tests from an ephemeral copy of the intermediate build sources
+ tempdir = tempfile.TemporaryDirectory(prefix='test_pyyaml')
+
+ try:
+ # have to create a subdir since we don't get dir_exists_ok on copytree until 3.8
+ temp_test_path = pathlib.Path(tempdir.name) / 'pyyaml'
+ shutil.copytree(build_cmd.build_lib, temp_test_path)
+ sys.path.insert(0, str(temp_test_path))
+ sys.path.insert(0, 'tests/lib')
+
+ import test_all
+ if not test_all.main([]):
+ raise DistutilsError("Tests failed")
+ finally:
+ try:
+ # this can fail under Windows; best-effort cleanup
+ tempdir.cleanup()
+ except Exception:
+ pass
+
+
+cmdclass = {
+ 'build_ext': build_ext,
+ 'test': test,
+}
+if bdist_wheel:
+ cmdclass['bdist_wheel'] = bdist_wheel
+
+
+if __name__ == '__main__':
+
+ setup(
+ name=NAME,
+ version=VERSION,
+ description=DESCRIPTION,
+ long_description=LONG_DESCRIPTION,
+ author=AUTHOR,
+ author_email=AUTHOR_EMAIL,
+ license=LICENSE,
+ platforms=PLATFORMS,
+ url=URL,
+ download_url=DOWNLOAD_URL,
+ classifiers=CLASSIFIERS,
+ project_urls=PROJECT_URLS,
+
+ package_dir={'': 'lib'},
+ packages=['yaml', '_yaml'],
+ ext_modules=[
+ Extension('yaml._yaml', ['yaml/_yaml.pyx'],
+ 'libyaml', "LibYAML bindings", LIBYAML_CHECK,
+ libraries=['yaml']),
+ ],
+
+ distclass=Distribution,
+ cmdclass=cmdclass,
+ python_requires='>=3.6',
+ )
diff --git a/third_party/python/PyYAML/yaml/__init__.pxd b/third_party/python/PyYAML/yaml/__init__.pxd
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/third_party/python/PyYAML/yaml/__init__.pxd
diff --git a/third_party/python/PyYAML/yaml/_yaml.h b/third_party/python/PyYAML/yaml/_yaml.h
new file mode 100644
index 0000000000..e3984c4da3
--- /dev/null
+++ b/third_party/python/PyYAML/yaml/_yaml.h
@@ -0,0 +1,13 @@
+
+#include <yaml.h>
+
+#define PyUnicode_FromYamlString(s) PyUnicode_FromString((const char *)(void *)(s))
+#define PyBytes_AS_Yaml_STRING(s) ((yaml_char_t *)PyBytes_AS_STRING(s))
+
+#ifdef _MSC_VER /* MS Visual C++ 6.0 */
+#if _MSC_VER == 1200
+
+#define PyLong_FromUnsignedLongLong(z) PyInt_FromLong(i)
+
+#endif
+#endif
diff --git a/third_party/python/PyYAML/yaml/_yaml.pxd b/third_party/python/PyYAML/yaml/_yaml.pxd
new file mode 100644
index 0000000000..713244d80b
--- /dev/null
+++ b/third_party/python/PyYAML/yaml/_yaml.pxd
@@ -0,0 +1,258 @@
+
+cdef extern from "_yaml.h":
+
+ void malloc(int l)
+ void memcpy(void *d, void *s, int l)
+ int strlen(char *s)
+ int PyString_CheckExact(object o)
+ int PyUnicode_CheckExact(object o)
+ char *PyString_AS_STRING(object o)
+ object PyUnicode_FromString(char *u)
+ object PyUnicode_DecodeUTF8(char *u, int s, char *e)
+ object PyUnicode_AsUTF8String(object o)
+ int PY_MAJOR_VERSION
+
+ ctypedef unsigned char yaml_char_t
+
+ object PyUnicode_FromYamlString(void *u)
+ yaml_char_t *PyBytes_AS_Yaml_STRING(object o)
+ const char *PyBytes_AS_STRING(object o)
+ int PyBytes_CheckExact(object o)
+ int PyBytes_GET_SIZE(object o)
+ object PyBytes_FromStringAndSize(char *v, int l)
+
+ ctypedef enum:
+ SIZEOF_VOID_P
+ ctypedef enum yaml_encoding_t:
+ YAML_ANY_ENCODING
+ YAML_UTF8_ENCODING
+ YAML_UTF16LE_ENCODING
+ YAML_UTF16BE_ENCODING
+ ctypedef enum yaml_break_t:
+ YAML_ANY_BREAK
+ YAML_CR_BREAK
+ YAML_LN_BREAK
+ YAML_CRLN_BREAK
+ ctypedef enum yaml_error_type_t:
+ YAML_NO_ERROR
+ YAML_MEMORY_ERROR
+ YAML_READER_ERROR
+ YAML_SCANNER_ERROR
+ YAML_PARSER_ERROR
+ YAML_WRITER_ERROR
+ YAML_EMITTER_ERROR
+ ctypedef enum yaml_scalar_style_t:
+ YAML_ANY_SCALAR_STYLE
+ YAML_PLAIN_SCALAR_STYLE
+ YAML_SINGLE_QUOTED_SCALAR_STYLE
+ YAML_DOUBLE_QUOTED_SCALAR_STYLE
+ YAML_LITERAL_SCALAR_STYLE
+ YAML_FOLDED_SCALAR_STYLE
+ ctypedef enum yaml_sequence_style_t:
+ YAML_ANY_SEQUENCE_STYLE
+ YAML_BLOCK_SEQUENCE_STYLE
+ YAML_FLOW_SEQUENCE_STYLE
+ ctypedef enum yaml_mapping_style_t:
+ YAML_ANY_MAPPING_STYLE
+ YAML_BLOCK_MAPPING_STYLE
+ YAML_FLOW_MAPPING_STYLE
+ ctypedef enum yaml_token_type_t:
+ YAML_NO_TOKEN
+ YAML_STREAM_START_TOKEN
+ YAML_STREAM_END_TOKEN
+ YAML_VERSION_DIRECTIVE_TOKEN
+ YAML_TAG_DIRECTIVE_TOKEN
+ YAML_DOCUMENT_START_TOKEN
+ YAML_DOCUMENT_END_TOKEN
+ YAML_BLOCK_SEQUENCE_START_TOKEN
+ YAML_BLOCK_MAPPING_START_TOKEN
+ YAML_BLOCK_END_TOKEN
+ YAML_FLOW_SEQUENCE_START_TOKEN
+ YAML_FLOW_SEQUENCE_END_TOKEN
+ YAML_FLOW_MAPPING_START_TOKEN
+ YAML_FLOW_MAPPING_END_TOKEN
+ YAML_BLOCK_ENTRY_TOKEN
+ YAML_FLOW_ENTRY_TOKEN
+ YAML_KEY_TOKEN
+ YAML_VALUE_TOKEN
+ YAML_ALIAS_TOKEN
+ YAML_ANCHOR_TOKEN
+ YAML_TAG_TOKEN
+ YAML_SCALAR_TOKEN
+ ctypedef enum yaml_event_type_t:
+ YAML_NO_EVENT
+ YAML_STREAM_START_EVENT
+ YAML_STREAM_END_EVENT
+ YAML_DOCUMENT_START_EVENT
+ YAML_DOCUMENT_END_EVENT
+ YAML_ALIAS_EVENT
+ YAML_SCALAR_EVENT
+ YAML_SEQUENCE_START_EVENT
+ YAML_SEQUENCE_END_EVENT
+ YAML_MAPPING_START_EVENT
+ YAML_MAPPING_END_EVENT
+
+ ctypedef int yaml_read_handler_t(void *data, unsigned char *buffer,
+ size_t size, size_t *size_read) except 0
+
+ ctypedef int yaml_write_handler_t(void *data, unsigned char *buffer,
+ size_t size) except 0
+
+ ctypedef struct yaml_mark_t:
+ size_t index
+ size_t line
+ size_t column
+ ctypedef struct yaml_version_directive_t:
+ int major
+ int minor
+ ctypedef struct yaml_tag_directive_t:
+ yaml_char_t *handle
+ yaml_char_t *prefix
+
+ ctypedef struct _yaml_token_stream_start_data_t:
+ yaml_encoding_t encoding
+ ctypedef struct _yaml_token_alias_data_t:
+ char *value
+ ctypedef struct _yaml_token_anchor_data_t:
+ char *value
+ ctypedef struct _yaml_token_tag_data_t:
+ char *handle
+ char *suffix
+ ctypedef struct _yaml_token_scalar_data_t:
+ char *value
+ size_t length
+ yaml_scalar_style_t style
+ ctypedef struct _yaml_token_version_directive_data_t:
+ int major
+ int minor
+ ctypedef struct _yaml_token_tag_directive_data_t:
+ char *handle
+ char *prefix
+ ctypedef union _yaml_token_data_t:
+ _yaml_token_stream_start_data_t stream_start
+ _yaml_token_alias_data_t alias
+ _yaml_token_anchor_data_t anchor
+ _yaml_token_tag_data_t tag
+ _yaml_token_scalar_data_t scalar
+ _yaml_token_version_directive_data_t version_directive
+ _yaml_token_tag_directive_data_t tag_directive
+ ctypedef struct yaml_token_t:
+ yaml_token_type_t type
+ _yaml_token_data_t data
+ yaml_mark_t start_mark
+ yaml_mark_t end_mark
+
+ ctypedef struct _yaml_event_stream_start_data_t:
+ yaml_encoding_t encoding
+ ctypedef struct _yaml_event_document_start_data_tag_directives_t:
+ yaml_tag_directive_t *start
+ yaml_tag_directive_t *end
+ ctypedef struct _yaml_event_document_start_data_t:
+ yaml_version_directive_t *version_directive
+ _yaml_event_document_start_data_tag_directives_t tag_directives
+ int implicit
+ ctypedef struct _yaml_event_document_end_data_t:
+ int implicit
+ ctypedef struct _yaml_event_alias_data_t:
+ char *anchor
+ ctypedef struct _yaml_event_scalar_data_t:
+ char *anchor
+ char *tag
+ char *value
+ size_t length
+ int plain_implicit
+ int quoted_implicit
+ yaml_scalar_style_t style
+ ctypedef struct _yaml_event_sequence_start_data_t:
+ char *anchor
+ char *tag
+ int implicit
+ yaml_sequence_style_t style
+ ctypedef struct _yaml_event_mapping_start_data_t:
+ char *anchor
+ char *tag
+ int implicit
+ yaml_mapping_style_t style
+ ctypedef union _yaml_event_data_t:
+ _yaml_event_stream_start_data_t stream_start
+ _yaml_event_document_start_data_t document_start
+ _yaml_event_document_end_data_t document_end
+ _yaml_event_alias_data_t alias
+ _yaml_event_scalar_data_t scalar
+ _yaml_event_sequence_start_data_t sequence_start
+ _yaml_event_mapping_start_data_t mapping_start
+ ctypedef struct yaml_event_t:
+ yaml_event_type_t type
+ _yaml_event_data_t data
+ yaml_mark_t start_mark
+ yaml_mark_t end_mark
+
+ ctypedef struct yaml_parser_t:
+ yaml_error_type_t error
+ char *problem
+ size_t problem_offset
+ int problem_value
+ yaml_mark_t problem_mark
+ char *context
+ yaml_mark_t context_mark
+
+ ctypedef struct yaml_emitter_t:
+ yaml_error_type_t error
+ char *problem
+
+ char *yaml_get_version_string()
+ void yaml_get_version(int *major, int *minor, int *patch)
+
+ void yaml_token_delete(yaml_token_t *token)
+
+ int yaml_stream_start_event_initialize(yaml_event_t *event,
+ yaml_encoding_t encoding)
+ int yaml_stream_end_event_initialize(yaml_event_t *event)
+ int yaml_document_start_event_initialize(yaml_event_t *event,
+ yaml_version_directive_t *version_directive,
+ yaml_tag_directive_t *tag_directives_start,
+ yaml_tag_directive_t *tag_directives_end,
+ int implicit)
+ int yaml_document_end_event_initialize(yaml_event_t *event,
+ int implicit)
+ int yaml_alias_event_initialize(yaml_event_t *event, yaml_char_t *anchor)
+ int yaml_scalar_event_initialize(yaml_event_t *event,
+ yaml_char_t *anchor, yaml_char_t *tag, yaml_char_t *value, int length,
+ int plain_implicit, int quoted_implicit,
+ yaml_scalar_style_t style)
+ int yaml_sequence_start_event_initialize(yaml_event_t *event,
+ yaml_char_t *anchor, yaml_char_t *tag, int implicit, yaml_sequence_style_t style)
+ int yaml_sequence_end_event_initialize(yaml_event_t *event)
+ int yaml_mapping_start_event_initialize(yaml_event_t *event,
+ yaml_char_t *anchor, yaml_char_t *tag, int implicit, yaml_mapping_style_t style)
+ int yaml_mapping_end_event_initialize(yaml_event_t *event)
+ void yaml_event_delete(yaml_event_t *event)
+
+ int yaml_parser_initialize(yaml_parser_t *parser)
+ void yaml_parser_delete(yaml_parser_t *parser)
+ void yaml_parser_set_input_string(yaml_parser_t *parser,
+ const unsigned char *input, size_t size)
+ void yaml_parser_set_input(yaml_parser_t *parser,
+ yaml_read_handler_t *handler, void *data)
+ void yaml_parser_set_encoding(yaml_parser_t *parser,
+ yaml_encoding_t encoding)
+ int yaml_parser_scan(yaml_parser_t *parser, yaml_token_t *token) except *
+ int yaml_parser_parse(yaml_parser_t *parser, yaml_event_t *event) except *
+
+ int yaml_emitter_initialize(yaml_emitter_t *emitter)
+ void yaml_emitter_delete(yaml_emitter_t *emitter)
+ void yaml_emitter_set_output_string(yaml_emitter_t *emitter,
+ char *output, size_t size, size_t *size_written)
+ void yaml_emitter_set_output(yaml_emitter_t *emitter,
+ yaml_write_handler_t *handler, void *data)
+ void yaml_emitter_set_encoding(yaml_emitter_t *emitter,
+ yaml_encoding_t encoding)
+ void yaml_emitter_set_canonical(yaml_emitter_t *emitter, int canonical)
+ void yaml_emitter_set_indent(yaml_emitter_t *emitter, int indent)
+ void yaml_emitter_set_width(yaml_emitter_t *emitter, int width)
+ void yaml_emitter_set_unicode(yaml_emitter_t *emitter, int unicode)
+ void yaml_emitter_set_break(yaml_emitter_t *emitter,
+ yaml_break_t line_break)
+ int yaml_emitter_emit(yaml_emitter_t *emitter, yaml_event_t *event) except *
+ int yaml_emitter_flush(yaml_emitter_t *emitter)
+
diff --git a/third_party/python/PyYAML/yaml/_yaml.pyx b/third_party/python/PyYAML/yaml/_yaml.pyx
new file mode 100644
index 0000000000..e3e93e2cef
--- /dev/null
+++ b/third_party/python/PyYAML/yaml/_yaml.pyx
@@ -0,0 +1,1396 @@
+
+import yaml
+
+def get_version_string():
+ cdef const char *value
+ value = yaml_get_version_string()
+ return PyUnicode_FromString(value)
+
+def get_version():
+ cdef int major, minor, patch
+ yaml_get_version(&major, &minor, &patch)
+ return (major, minor, patch)
+
+#Mark = yaml.error.Mark
+YAMLError = yaml.error.YAMLError
+ReaderError = yaml.reader.ReaderError
+ScannerError = yaml.scanner.ScannerError
+ParserError = yaml.parser.ParserError
+ComposerError = yaml.composer.ComposerError
+ConstructorError = yaml.constructor.ConstructorError
+EmitterError = yaml.emitter.EmitterError
+SerializerError = yaml.serializer.SerializerError
+RepresenterError = yaml.representer.RepresenterError
+
+StreamStartToken = yaml.tokens.StreamStartToken
+StreamEndToken = yaml.tokens.StreamEndToken
+DirectiveToken = yaml.tokens.DirectiveToken
+DocumentStartToken = yaml.tokens.DocumentStartToken
+DocumentEndToken = yaml.tokens.DocumentEndToken
+BlockSequenceStartToken = yaml.tokens.BlockSequenceStartToken
+BlockMappingStartToken = yaml.tokens.BlockMappingStartToken
+BlockEndToken = yaml.tokens.BlockEndToken
+FlowSequenceStartToken = yaml.tokens.FlowSequenceStartToken
+FlowMappingStartToken = yaml.tokens.FlowMappingStartToken
+FlowSequenceEndToken = yaml.tokens.FlowSequenceEndToken
+FlowMappingEndToken = yaml.tokens.FlowMappingEndToken
+KeyToken = yaml.tokens.KeyToken
+ValueToken = yaml.tokens.ValueToken
+BlockEntryToken = yaml.tokens.BlockEntryToken
+FlowEntryToken = yaml.tokens.FlowEntryToken
+AliasToken = yaml.tokens.AliasToken
+AnchorToken = yaml.tokens.AnchorToken
+TagToken = yaml.tokens.TagToken
+ScalarToken = yaml.tokens.ScalarToken
+
+StreamStartEvent = yaml.events.StreamStartEvent
+StreamEndEvent = yaml.events.StreamEndEvent
+DocumentStartEvent = yaml.events.DocumentStartEvent
+DocumentEndEvent = yaml.events.DocumentEndEvent
+AliasEvent = yaml.events.AliasEvent
+ScalarEvent = yaml.events.ScalarEvent
+SequenceStartEvent = yaml.events.SequenceStartEvent
+SequenceEndEvent = yaml.events.SequenceEndEvent
+MappingStartEvent = yaml.events.MappingStartEvent
+MappingEndEvent = yaml.events.MappingEndEvent
+
+ScalarNode = yaml.nodes.ScalarNode
+SequenceNode = yaml.nodes.SequenceNode
+MappingNode = yaml.nodes.MappingNode
+
+cdef class Mark:
+ cdef readonly object name
+ cdef readonly size_t index
+ cdef readonly size_t line
+ cdef readonly size_t column
+ cdef readonly buffer
+ cdef readonly pointer
+
+ def __init__(self, object name, size_t index, size_t line, size_t column,
+ object buffer, object pointer):
+ self.name = name
+ self.index = index
+ self.line = line
+ self.column = column
+ self.buffer = buffer
+ self.pointer = pointer
+
+ def get_snippet(self):
+ return None
+
+ def __str__(self):
+ where = " in \"%s\", line %d, column %d" \
+ % (self.name, self.line+1, self.column+1)
+ return where
+
+#class YAMLError(Exception):
+# pass
+#
+#class MarkedYAMLError(YAMLError):
+#
+# def __init__(self, context=None, context_mark=None,
+# problem=None, problem_mark=None, note=None):
+# self.context = context
+# self.context_mark = context_mark
+# self.problem = problem
+# self.problem_mark = problem_mark
+# self.note = note
+#
+# def __str__(self):
+# lines = []
+# if self.context is not None:
+# lines.append(self.context)
+# if self.context_mark is not None \
+# and (self.problem is None or self.problem_mark is None
+# or self.context_mark.name != self.problem_mark.name
+# or self.context_mark.line != self.problem_mark.line
+# or self.context_mark.column != self.problem_mark.column):
+# lines.append(str(self.context_mark))
+# if self.problem is not None:
+# lines.append(self.problem)
+# if self.problem_mark is not None:
+# lines.append(str(self.problem_mark))
+# if self.note is not None:
+# lines.append(self.note)
+# return '\n'.join(lines)
+#
+#class ReaderError(YAMLError):
+#
+# def __init__(self, name, position, character, encoding, reason):
+# self.name = name
+# self.character = character
+# self.position = position
+# self.encoding = encoding
+# self.reason = reason
+#
+# def __str__(self):
+# if isinstance(self.character, str):
+# return "'%s' codec can't decode byte #x%02x: %s\n" \
+# " in \"%s\", position %d" \
+# % (self.encoding, ord(self.character), self.reason,
+# self.name, self.position)
+# else:
+# return "unacceptable character #x%04x: %s\n" \
+# " in \"%s\", position %d" \
+# % (ord(self.character), self.reason,
+# self.name, self.position)
+#
+#class ScannerError(MarkedYAMLError):
+# pass
+#
+#class ParserError(MarkedYAMLError):
+# pass
+#
+#class EmitterError(YAMLError):
+# pass
+#
+#cdef class Token:
+# cdef readonly Mark start_mark
+# cdef readonly Mark end_mark
+# def __init__(self, Mark start_mark, Mark end_mark):
+# self.start_mark = start_mark
+# self.end_mark = end_mark
+#
+#cdef class StreamStartToken(Token):
+# cdef readonly object encoding
+# def __init__(self, Mark start_mark, Mark end_mark, encoding):
+# self.start_mark = start_mark
+# self.end_mark = end_mark
+# self.encoding = encoding
+#
+#cdef class StreamEndToken(Token):
+# pass
+#
+#cdef class DirectiveToken(Token):
+# cdef readonly object name
+# cdef readonly object value
+# def __init__(self, name, value, Mark start_mark, Mark end_mark):
+# self.name = name
+# self.value = value
+# self.start_mark = start_mark
+# self.end_mark = end_mark
+#
+#cdef class DocumentStartToken(Token):
+# pass
+#
+#cdef class DocumentEndToken(Token):
+# pass
+#
+#cdef class BlockSequenceStartToken(Token):
+# pass
+#
+#cdef class BlockMappingStartToken(Token):
+# pass
+#
+#cdef class BlockEndToken(Token):
+# pass
+#
+#cdef class FlowSequenceStartToken(Token):
+# pass
+#
+#cdef class FlowMappingStartToken(Token):
+# pass
+#
+#cdef class FlowSequenceEndToken(Token):
+# pass
+#
+#cdef class FlowMappingEndToken(Token):
+# pass
+#
+#cdef class KeyToken(Token):
+# pass
+#
+#cdef class ValueToken(Token):
+# pass
+#
+#cdef class BlockEntryToken(Token):
+# pass
+#
+#cdef class FlowEntryToken(Token):
+# pass
+#
+#cdef class AliasToken(Token):
+# cdef readonly object value
+# def __init__(self, value, Mark start_mark, Mark end_mark):
+# self.value = value
+# self.start_mark = start_mark
+# self.end_mark = end_mark
+#
+#cdef class AnchorToken(Token):
+# cdef readonly object value
+# def __init__(self, value, Mark start_mark, Mark end_mark):
+# self.value = value
+# self.start_mark = start_mark
+# self.end_mark = end_mark
+#
+#cdef class TagToken(Token):
+# cdef readonly object value
+# def __init__(self, value, Mark start_mark, Mark end_mark):
+# self.value = value
+# self.start_mark = start_mark
+# self.end_mark = end_mark
+#
+#cdef class ScalarToken(Token):
+# cdef readonly object value
+# cdef readonly object plain
+# cdef readonly object style
+# def __init__(self, value, plain, Mark start_mark, Mark end_mark, style=None):
+# self.value = value
+# self.plain = plain
+# self.start_mark = start_mark
+# self.end_mark = end_mark
+# self.style = style
+
+cdef class CParser:
+
+ cdef yaml_parser_t parser
+ cdef yaml_event_t parsed_event
+
+ cdef object stream
+ cdef object stream_name
+ cdef object current_token
+ cdef object current_event
+ cdef object anchors
+ cdef object stream_cache
+ cdef int stream_cache_len
+ cdef int stream_cache_pos
+ cdef int unicode_source
+
+ def __init__(self, stream):
+ cdef is_readable
+ if yaml_parser_initialize(&self.parser) == 0:
+ raise MemoryError
+ self.parsed_event.type = YAML_NO_EVENT
+ is_readable = 1
+ try:
+ stream.read
+ except AttributeError:
+ is_readable = 0
+ self.unicode_source = 0
+ if is_readable:
+ self.stream = stream
+ try:
+ self.stream_name = stream.name
+ except AttributeError:
+ self.stream_name = u'<file>'
+ self.stream_cache = None
+ self.stream_cache_len = 0
+ self.stream_cache_pos = 0
+ yaml_parser_set_input(&self.parser, input_handler, <void *>self)
+ else:
+ if PyUnicode_CheckExact(stream) != 0:
+ stream = PyUnicode_AsUTF8String(stream)
+ self.stream_name = u'<unicode string>'
+ self.unicode_source = 1
+ else:
+ self.stream_name = u'<byte string>'
+ if PyBytes_CheckExact(stream) == 0:
+ raise TypeError(u"a string or stream input is required")
+ self.stream = stream
+ yaml_parser_set_input_string(&self.parser, PyBytes_AS_Yaml_STRING(stream), PyBytes_GET_SIZE(stream))
+ self.current_token = None
+ self.current_event = None
+ self.anchors = {}
+
+ def __dealloc__(self):
+ yaml_parser_delete(&self.parser)
+ yaml_event_delete(&self.parsed_event)
+
+ def dispose(self):
+ pass
+
+ cdef object _parser_error(self):
+ if self.parser.error == YAML_MEMORY_ERROR:
+ return MemoryError
+ elif self.parser.error == YAML_READER_ERROR:
+ return ReaderError(self.stream_name, self.parser.problem_offset,
+ self.parser.problem_value, u'?', PyUnicode_FromString(self.parser.problem))
+ elif self.parser.error == YAML_SCANNER_ERROR \
+ or self.parser.error == YAML_PARSER_ERROR:
+ context_mark = None
+ problem_mark = None
+ if self.parser.context != NULL:
+ context_mark = Mark(self.stream_name,
+ self.parser.context_mark.index,
+ self.parser.context_mark.line,
+ self.parser.context_mark.column, None, None)
+ if self.parser.problem != NULL:
+ problem_mark = Mark(self.stream_name,
+ self.parser.problem_mark.index,
+ self.parser.problem_mark.line,
+ self.parser.problem_mark.column, None, None)
+ context = None
+ if self.parser.context != NULL:
+ context = PyUnicode_FromString(self.parser.context)
+ problem = PyUnicode_FromString(self.parser.problem)
+ if self.parser.error == YAML_SCANNER_ERROR:
+ return ScannerError(context, context_mark, problem, problem_mark)
+ else:
+ return ParserError(context, context_mark, problem, problem_mark)
+ raise ValueError(u"no parser error")
+
+ def raw_scan(self):
+ cdef yaml_token_t token
+ cdef int done
+ cdef int count
+ count = 0
+ done = 0
+ while done == 0:
+ if yaml_parser_scan(&self.parser, &token) == 0:
+ error = self._parser_error()
+ raise error
+ if token.type == YAML_NO_TOKEN:
+ done = 1
+ else:
+ count = count+1
+ yaml_token_delete(&token)
+ return count
+
+ cdef object _scan(self):
+ cdef yaml_token_t token
+ if yaml_parser_scan(&self.parser, &token) == 0:
+ error = self._parser_error()
+ raise error
+ token_object = self._token_to_object(&token)
+ yaml_token_delete(&token)
+ return token_object
+
+ cdef object _token_to_object(self, yaml_token_t *token):
+ start_mark = Mark(self.stream_name,
+ token.start_mark.index,
+ token.start_mark.line,
+ token.start_mark.column,
+ None, None)
+ end_mark = Mark(self.stream_name,
+ token.end_mark.index,
+ token.end_mark.line,
+ token.end_mark.column,
+ None, None)
+ if token.type == YAML_NO_TOKEN:
+ return None
+ elif token.type == YAML_STREAM_START_TOKEN:
+ encoding = None
+ if token.data.stream_start.encoding == YAML_UTF8_ENCODING:
+ if self.unicode_source == 0:
+ encoding = u"utf-8"
+ elif token.data.stream_start.encoding == YAML_UTF16LE_ENCODING:
+ encoding = u"utf-16-le"
+ elif token.data.stream_start.encoding == YAML_UTF16BE_ENCODING:
+ encoding = u"utf-16-be"
+ return StreamStartToken(start_mark, end_mark, encoding)
+ elif token.type == YAML_STREAM_END_TOKEN:
+ return StreamEndToken(start_mark, end_mark)
+ elif token.type == YAML_VERSION_DIRECTIVE_TOKEN:
+ return DirectiveToken(u"YAML",
+ (token.data.version_directive.major,
+ token.data.version_directive.minor),
+ start_mark, end_mark)
+ elif token.type == YAML_TAG_DIRECTIVE_TOKEN:
+ handle = PyUnicode_FromYamlString(token.data.tag_directive.handle)
+ prefix = PyUnicode_FromYamlString(token.data.tag_directive.prefix)
+ return DirectiveToken(u"TAG", (handle, prefix),
+ start_mark, end_mark)
+ elif token.type == YAML_DOCUMENT_START_TOKEN:
+ return DocumentStartToken(start_mark, end_mark)
+ elif token.type == YAML_DOCUMENT_END_TOKEN:
+ return DocumentEndToken(start_mark, end_mark)
+ elif token.type == YAML_BLOCK_SEQUENCE_START_TOKEN:
+ return BlockSequenceStartToken(start_mark, end_mark)
+ elif token.type == YAML_BLOCK_MAPPING_START_TOKEN:
+ return BlockMappingStartToken(start_mark, end_mark)
+ elif token.type == YAML_BLOCK_END_TOKEN:
+ return BlockEndToken(start_mark, end_mark)
+ elif token.type == YAML_FLOW_SEQUENCE_START_TOKEN:
+ return FlowSequenceStartToken(start_mark, end_mark)
+ elif token.type == YAML_FLOW_SEQUENCE_END_TOKEN:
+ return FlowSequenceEndToken(start_mark, end_mark)
+ elif token.type == YAML_FLOW_MAPPING_START_TOKEN:
+ return FlowMappingStartToken(start_mark, end_mark)
+ elif token.type == YAML_FLOW_MAPPING_END_TOKEN:
+ return FlowMappingEndToken(start_mark, end_mark)
+ elif token.type == YAML_BLOCK_ENTRY_TOKEN:
+ return BlockEntryToken(start_mark, end_mark)
+ elif token.type == YAML_FLOW_ENTRY_TOKEN:
+ return FlowEntryToken(start_mark, end_mark)
+ elif token.type == YAML_KEY_TOKEN:
+ return KeyToken(start_mark, end_mark)
+ elif token.type == YAML_VALUE_TOKEN:
+ return ValueToken(start_mark, end_mark)
+ elif token.type == YAML_ALIAS_TOKEN:
+ value = PyUnicode_FromYamlString(token.data.alias.value)
+ return AliasToken(value, start_mark, end_mark)
+ elif token.type == YAML_ANCHOR_TOKEN:
+ value = PyUnicode_FromYamlString(token.data.anchor.value)
+ return AnchorToken(value, start_mark, end_mark)
+ elif token.type == YAML_TAG_TOKEN:
+ handle = PyUnicode_FromYamlString(token.data.tag.handle)
+ suffix = PyUnicode_FromYamlString(token.data.tag.suffix)
+ if not handle:
+ handle = None
+ return TagToken((handle, suffix), start_mark, end_mark)
+ elif token.type == YAML_SCALAR_TOKEN:
+ value = PyUnicode_DecodeUTF8(<char *>token.data.scalar.value,
+ token.data.scalar.length, 'strict')
+ plain = False
+ style = None
+ if token.data.scalar.style == YAML_PLAIN_SCALAR_STYLE:
+ plain = True
+ style = u''
+ elif token.data.scalar.style == YAML_SINGLE_QUOTED_SCALAR_STYLE:
+ style = u'\''
+ elif token.data.scalar.style == YAML_DOUBLE_QUOTED_SCALAR_STYLE:
+ style = u'"'
+ elif token.data.scalar.style == YAML_LITERAL_SCALAR_STYLE:
+ style = u'|'
+ elif token.data.scalar.style == YAML_FOLDED_SCALAR_STYLE:
+ style = u'>'
+ return ScalarToken(value, plain,
+ start_mark, end_mark, style)
+ else:
+ raise ValueError(u"unknown token type")
+
+ def get_token(self):
+ if self.current_token is not None:
+ value = self.current_token
+ self.current_token = None
+ else:
+ value = self._scan()
+ return value
+
+ def peek_token(self):
+ if self.current_token is None:
+ self.current_token = self._scan()
+ return self.current_token
+
+ def check_token(self, *choices):
+ if self.current_token is None:
+ self.current_token = self._scan()
+ if self.current_token is None:
+ return False
+ if not choices:
+ return True
+ token_class = self.current_token.__class__
+ for choice in choices:
+ if token_class is choice:
+ return True
+ return False
+
+ def raw_parse(self):
+ cdef yaml_event_t event
+ cdef int done
+ cdef int count
+ count = 0
+ done = 0
+ while done == 0:
+ if yaml_parser_parse(&self.parser, &event) == 0:
+ error = self._parser_error()
+ raise error
+ if event.type == YAML_NO_EVENT:
+ done = 1
+ else:
+ count = count+1
+ yaml_event_delete(&event)
+ return count
+
+ cdef object _parse(self):
+ cdef yaml_event_t event
+ if yaml_parser_parse(&self.parser, &event) == 0:
+ error = self._parser_error()
+ raise error
+ event_object = self._event_to_object(&event)
+ yaml_event_delete(&event)
+ return event_object
+
+ cdef object _event_to_object(self, yaml_event_t *event):
+ cdef yaml_tag_directive_t *tag_directive
+ start_mark = Mark(self.stream_name,
+ event.start_mark.index,
+ event.start_mark.line,
+ event.start_mark.column,
+ None, None)
+ end_mark = Mark(self.stream_name,
+ event.end_mark.index,
+ event.end_mark.line,
+ event.end_mark.column,
+ None, None)
+ if event.type == YAML_NO_EVENT:
+ return None
+ elif event.type == YAML_STREAM_START_EVENT:
+ encoding = None
+ if event.data.stream_start.encoding == YAML_UTF8_ENCODING:
+ if self.unicode_source == 0:
+ encoding = u"utf-8"
+ elif event.data.stream_start.encoding == YAML_UTF16LE_ENCODING:
+ encoding = u"utf-16-le"
+ elif event.data.stream_start.encoding == YAML_UTF16BE_ENCODING:
+ encoding = u"utf-16-be"
+ return StreamStartEvent(start_mark, end_mark, encoding)
+ elif event.type == YAML_STREAM_END_EVENT:
+ return StreamEndEvent(start_mark, end_mark)
+ elif event.type == YAML_DOCUMENT_START_EVENT:
+ explicit = False
+ if event.data.document_start.implicit == 0:
+ explicit = True
+ version = None
+ if event.data.document_start.version_directive != NULL:
+ version = (event.data.document_start.version_directive.major,
+ event.data.document_start.version_directive.minor)
+ tags = None
+ if event.data.document_start.tag_directives.start != NULL:
+ tags = {}
+ tag_directive = event.data.document_start.tag_directives.start
+ while tag_directive != event.data.document_start.tag_directives.end:
+ handle = PyUnicode_FromYamlString(tag_directive.handle)
+ prefix = PyUnicode_FromYamlString(tag_directive.prefix)
+ tags[handle] = prefix
+ tag_directive = tag_directive+1
+ return DocumentStartEvent(start_mark, end_mark,
+ explicit, version, tags)
+ elif event.type == YAML_DOCUMENT_END_EVENT:
+ explicit = False
+ if event.data.document_end.implicit == 0:
+ explicit = True
+ return DocumentEndEvent(start_mark, end_mark, explicit)
+ elif event.type == YAML_ALIAS_EVENT:
+ anchor = PyUnicode_FromYamlString(event.data.alias.anchor)
+ return AliasEvent(anchor, start_mark, end_mark)
+ elif event.type == YAML_SCALAR_EVENT:
+ anchor = None
+ if event.data.scalar.anchor != NULL:
+ anchor = PyUnicode_FromYamlString(event.data.scalar.anchor)
+ tag = None
+ if event.data.scalar.tag != NULL:
+ tag = PyUnicode_FromYamlString(event.data.scalar.tag)
+ value = PyUnicode_DecodeUTF8(<char *>event.data.scalar.value,
+ event.data.scalar.length, 'strict')
+ plain_implicit = False
+ if event.data.scalar.plain_implicit == 1:
+ plain_implicit = True
+ quoted_implicit = False
+ if event.data.scalar.quoted_implicit == 1:
+ quoted_implicit = True
+ style = None
+ if event.data.scalar.style == YAML_PLAIN_SCALAR_STYLE:
+ style = u''
+ elif event.data.scalar.style == YAML_SINGLE_QUOTED_SCALAR_STYLE:
+ style = u'\''
+ elif event.data.scalar.style == YAML_DOUBLE_QUOTED_SCALAR_STYLE:
+ style = u'"'
+ elif event.data.scalar.style == YAML_LITERAL_SCALAR_STYLE:
+ style = u'|'
+ elif event.data.scalar.style == YAML_FOLDED_SCALAR_STYLE:
+ style = u'>'
+ return ScalarEvent(anchor, tag,
+ (plain_implicit, quoted_implicit),
+ value, start_mark, end_mark, style)
+ elif event.type == YAML_SEQUENCE_START_EVENT:
+ anchor = None
+ if event.data.sequence_start.anchor != NULL:
+ anchor = PyUnicode_FromYamlString(event.data.sequence_start.anchor)
+ tag = None
+ if event.data.sequence_start.tag != NULL:
+ tag = PyUnicode_FromYamlString(event.data.sequence_start.tag)
+ implicit = False
+ if event.data.sequence_start.implicit == 1:
+ implicit = True
+ flow_style = None
+ if event.data.sequence_start.style == YAML_FLOW_SEQUENCE_STYLE:
+ flow_style = True
+ elif event.data.sequence_start.style == YAML_BLOCK_SEQUENCE_STYLE:
+ flow_style = False
+ return SequenceStartEvent(anchor, tag, implicit,
+ start_mark, end_mark, flow_style)
+ elif event.type == YAML_MAPPING_START_EVENT:
+ anchor = None
+ if event.data.mapping_start.anchor != NULL:
+ anchor = PyUnicode_FromYamlString(event.data.mapping_start.anchor)
+ tag = None
+ if event.data.mapping_start.tag != NULL:
+ tag = PyUnicode_FromYamlString(event.data.mapping_start.tag)
+ implicit = False
+ if event.data.mapping_start.implicit == 1:
+ implicit = True
+ flow_style = None
+ if event.data.mapping_start.style == YAML_FLOW_MAPPING_STYLE:
+ flow_style = True
+ elif event.data.mapping_start.style == YAML_BLOCK_MAPPING_STYLE:
+ flow_style = False
+ return MappingStartEvent(anchor, tag, implicit,
+ start_mark, end_mark, flow_style)
+ elif event.type == YAML_SEQUENCE_END_EVENT:
+ return SequenceEndEvent(start_mark, end_mark)
+ elif event.type == YAML_MAPPING_END_EVENT:
+ return MappingEndEvent(start_mark, end_mark)
+ else:
+ raise ValueError(u"unknown event type")
+
+ def get_event(self):
+ if self.current_event is not None:
+ value = self.current_event
+ self.current_event = None
+ else:
+ value = self._parse()
+ return value
+
+ def peek_event(self):
+ if self.current_event is None:
+ self.current_event = self._parse()
+ return self.current_event
+
+ def check_event(self, *choices):
+ if self.current_event is None:
+ self.current_event = self._parse()
+ if self.current_event is None:
+ return False
+ if not choices:
+ return True
+ event_class = self.current_event.__class__
+ for choice in choices:
+ if event_class is choice:
+ return True
+ return False
+
+ def check_node(self):
+ self._parse_next_event()
+ if self.parsed_event.type == YAML_STREAM_START_EVENT:
+ yaml_event_delete(&self.parsed_event)
+ self._parse_next_event()
+ if self.parsed_event.type != YAML_STREAM_END_EVENT:
+ return True
+ return False
+
+ def get_node(self):
+ self._parse_next_event()
+ if self.parsed_event.type != YAML_STREAM_END_EVENT:
+ return self._compose_document()
+
+ def get_single_node(self):
+ self._parse_next_event()
+ yaml_event_delete(&self.parsed_event)
+ self._parse_next_event()
+ document = None
+ if self.parsed_event.type != YAML_STREAM_END_EVENT:
+ document = self._compose_document()
+ self._parse_next_event()
+ if self.parsed_event.type != YAML_STREAM_END_EVENT:
+ mark = Mark(self.stream_name,
+ self.parsed_event.start_mark.index,
+ self.parsed_event.start_mark.line,
+ self.parsed_event.start_mark.column,
+ None, None)
+ raise ComposerError(u"expected a single document in the stream",
+ document.start_mark, u"but found another document", mark)
+ return document
+
+ cdef object _compose_document(self):
+ yaml_event_delete(&self.parsed_event)
+ node = self._compose_node(None, None)
+ self._parse_next_event()
+ yaml_event_delete(&self.parsed_event)
+ self.anchors = {}
+ return node
+
+ cdef object _compose_node(self, object parent, object index):
+ self._parse_next_event()
+ if self.parsed_event.type == YAML_ALIAS_EVENT:
+ anchor = PyUnicode_FromYamlString(self.parsed_event.data.alias.anchor)
+ if anchor not in self.anchors:
+ mark = Mark(self.stream_name,
+ self.parsed_event.start_mark.index,
+ self.parsed_event.start_mark.line,
+ self.parsed_event.start_mark.column,
+ None, None)
+ raise ComposerError(None, None, u"found undefined alias", mark)
+ yaml_event_delete(&self.parsed_event)
+ return self.anchors[anchor]
+ anchor = None
+ if self.parsed_event.type == YAML_SCALAR_EVENT \
+ and self.parsed_event.data.scalar.anchor != NULL:
+ anchor = PyUnicode_FromYamlString(self.parsed_event.data.scalar.anchor)
+ elif self.parsed_event.type == YAML_SEQUENCE_START_EVENT \
+ and self.parsed_event.data.sequence_start.anchor != NULL:
+ anchor = PyUnicode_FromYamlString(self.parsed_event.data.sequence_start.anchor)
+ elif self.parsed_event.type == YAML_MAPPING_START_EVENT \
+ and self.parsed_event.data.mapping_start.anchor != NULL:
+ anchor = PyUnicode_FromYamlString(self.parsed_event.data.mapping_start.anchor)
+ if anchor is not None:
+ if anchor in self.anchors:
+ mark = Mark(self.stream_name,
+ self.parsed_event.start_mark.index,
+ self.parsed_event.start_mark.line,
+ self.parsed_event.start_mark.column,
+ None, None)
+ raise ComposerError(u"found duplicate anchor; first occurrence",
+ self.anchors[anchor].start_mark, u"second occurrence", mark)
+ self.descend_resolver(parent, index)
+ if self.parsed_event.type == YAML_SCALAR_EVENT:
+ node = self._compose_scalar_node(anchor)
+ elif self.parsed_event.type == YAML_SEQUENCE_START_EVENT:
+ node = self._compose_sequence_node(anchor)
+ elif self.parsed_event.type == YAML_MAPPING_START_EVENT:
+ node = self._compose_mapping_node(anchor)
+ self.ascend_resolver()
+ return node
+
+ cdef _compose_scalar_node(self, object anchor):
+ start_mark = Mark(self.stream_name,
+ self.parsed_event.start_mark.index,
+ self.parsed_event.start_mark.line,
+ self.parsed_event.start_mark.column,
+ None, None)
+ end_mark = Mark(self.stream_name,
+ self.parsed_event.end_mark.index,
+ self.parsed_event.end_mark.line,
+ self.parsed_event.end_mark.column,
+ None, None)
+ value = PyUnicode_DecodeUTF8(<char *>self.parsed_event.data.scalar.value,
+ self.parsed_event.data.scalar.length, 'strict')
+ plain_implicit = False
+ if self.parsed_event.data.scalar.plain_implicit == 1:
+ plain_implicit = True
+ quoted_implicit = False
+ if self.parsed_event.data.scalar.quoted_implicit == 1:
+ quoted_implicit = True
+ if self.parsed_event.data.scalar.tag == NULL \
+ or (self.parsed_event.data.scalar.tag[0] == c'!'
+ and self.parsed_event.data.scalar.tag[1] == c'\0'):
+ tag = self.resolve(ScalarNode, value, (plain_implicit, quoted_implicit))
+ else:
+ tag = PyUnicode_FromYamlString(self.parsed_event.data.scalar.tag)
+ style = None
+ if self.parsed_event.data.scalar.style == YAML_PLAIN_SCALAR_STYLE:
+ style = u''
+ elif self.parsed_event.data.scalar.style == YAML_SINGLE_QUOTED_SCALAR_STYLE:
+ style = u'\''
+ elif self.parsed_event.data.scalar.style == YAML_DOUBLE_QUOTED_SCALAR_STYLE:
+ style = u'"'
+ elif self.parsed_event.data.scalar.style == YAML_LITERAL_SCALAR_STYLE:
+ style = u'|'
+ elif self.parsed_event.data.scalar.style == YAML_FOLDED_SCALAR_STYLE:
+ style = u'>'
+ node = ScalarNode(tag, value, start_mark, end_mark, style)
+ if anchor is not None:
+ self.anchors[anchor] = node
+ yaml_event_delete(&self.parsed_event)
+ return node
+
+ cdef _compose_sequence_node(self, object anchor):
+ cdef int index
+ start_mark = Mark(self.stream_name,
+ self.parsed_event.start_mark.index,
+ self.parsed_event.start_mark.line,
+ self.parsed_event.start_mark.column,
+ None, None)
+ implicit = False
+ if self.parsed_event.data.sequence_start.implicit == 1:
+ implicit = True
+ if self.parsed_event.data.sequence_start.tag == NULL \
+ or (self.parsed_event.data.sequence_start.tag[0] == c'!'
+ and self.parsed_event.data.sequence_start.tag[1] == c'\0'):
+ tag = self.resolve(SequenceNode, None, implicit)
+ else:
+ tag = PyUnicode_FromYamlString(self.parsed_event.data.sequence_start.tag)
+ flow_style = None
+ if self.parsed_event.data.sequence_start.style == YAML_FLOW_SEQUENCE_STYLE:
+ flow_style = True
+ elif self.parsed_event.data.sequence_start.style == YAML_BLOCK_SEQUENCE_STYLE:
+ flow_style = False
+ value = []
+ node = SequenceNode(tag, value, start_mark, None, flow_style)
+ if anchor is not None:
+ self.anchors[anchor] = node
+ yaml_event_delete(&self.parsed_event)
+ index = 0
+ self._parse_next_event()
+ while self.parsed_event.type != YAML_SEQUENCE_END_EVENT:
+ value.append(self._compose_node(node, index))
+ index = index+1
+ self._parse_next_event()
+ node.end_mark = Mark(self.stream_name,
+ self.parsed_event.end_mark.index,
+ self.parsed_event.end_mark.line,
+ self.parsed_event.end_mark.column,
+ None, None)
+ yaml_event_delete(&self.parsed_event)
+ return node
+
+ cdef _compose_mapping_node(self, object anchor):
+ start_mark = Mark(self.stream_name,
+ self.parsed_event.start_mark.index,
+ self.parsed_event.start_mark.line,
+ self.parsed_event.start_mark.column,
+ None, None)
+ implicit = False
+ if self.parsed_event.data.mapping_start.implicit == 1:
+ implicit = True
+ if self.parsed_event.data.mapping_start.tag == NULL \
+ or (self.parsed_event.data.mapping_start.tag[0] == c'!'
+ and self.parsed_event.data.mapping_start.tag[1] == c'\0'):
+ tag = self.resolve(MappingNode, None, implicit)
+ else:
+ tag = PyUnicode_FromYamlString(self.parsed_event.data.mapping_start.tag)
+ flow_style = None
+ if self.parsed_event.data.mapping_start.style == YAML_FLOW_MAPPING_STYLE:
+ flow_style = True
+ elif self.parsed_event.data.mapping_start.style == YAML_BLOCK_MAPPING_STYLE:
+ flow_style = False
+ value = []
+ node = MappingNode(tag, value, start_mark, None, flow_style)
+ if anchor is not None:
+ self.anchors[anchor] = node
+ yaml_event_delete(&self.parsed_event)
+ self._parse_next_event()
+ while self.parsed_event.type != YAML_MAPPING_END_EVENT:
+ item_key = self._compose_node(node, None)
+ item_value = self._compose_node(node, item_key)
+ value.append((item_key, item_value))
+ self._parse_next_event()
+ node.end_mark = Mark(self.stream_name,
+ self.parsed_event.end_mark.index,
+ self.parsed_event.end_mark.line,
+ self.parsed_event.end_mark.column,
+ None, None)
+ yaml_event_delete(&self.parsed_event)
+ return node
+
+ cdef int _parse_next_event(self) except 0:
+ if self.parsed_event.type == YAML_NO_EVENT:
+ if yaml_parser_parse(&self.parser, &self.parsed_event) == 0:
+ error = self._parser_error()
+ raise error
+ return 1
+
+cdef int input_handler(void *data, unsigned char *buffer, size_t size, size_t *read) except 0:
+ cdef CParser parser
+ parser = <CParser>data
+ if parser.stream_cache is None:
+ value = parser.stream.read(size)
+ if PyUnicode_CheckExact(value) != 0:
+ value = PyUnicode_AsUTF8String(value)
+ parser.unicode_source = 1
+ if PyBytes_CheckExact(value) == 0:
+ raise TypeError(u"a string value is expected")
+ parser.stream_cache = value
+ parser.stream_cache_pos = 0
+ parser.stream_cache_len = PyBytes_GET_SIZE(value)
+ if (parser.stream_cache_len - parser.stream_cache_pos) < <int>size:
+ size = parser.stream_cache_len - parser.stream_cache_pos
+ if size > 0:
+ memcpy(buffer, PyBytes_AS_STRING(parser.stream_cache)
+ + parser.stream_cache_pos, size)
+ read[0] = size
+ parser.stream_cache_pos += size
+ if parser.stream_cache_pos == parser.stream_cache_len:
+ parser.stream_cache = None
+ return 1
+
+cdef class CEmitter:
+
+ cdef yaml_emitter_t emitter
+
+ cdef object stream
+
+ cdef int document_start_implicit
+ cdef int document_end_implicit
+ cdef object use_version
+ cdef object use_tags
+
+ cdef object serialized_nodes
+ cdef object anchors
+ cdef int last_alias_id
+ cdef int closed
+ cdef int dump_unicode
+ cdef object use_encoding
+
+ def __init__(self, stream, canonical=None, indent=None, width=None,
+ allow_unicode=None, line_break=None, encoding=None,
+ explicit_start=None, explicit_end=None, version=None, tags=None):
+ if yaml_emitter_initialize(&self.emitter) == 0:
+ raise MemoryError
+ self.stream = stream
+ self.dump_unicode = 0
+ if hasattr(stream, u'encoding'):
+ self.dump_unicode = 1
+ self.use_encoding = encoding
+ yaml_emitter_set_output(&self.emitter, output_handler, <void *>self)
+ if canonical:
+ yaml_emitter_set_canonical(&self.emitter, 1)
+ if indent is not None:
+ yaml_emitter_set_indent(&self.emitter, indent)
+ if width is not None:
+ yaml_emitter_set_width(&self.emitter, width)
+ if allow_unicode:
+ yaml_emitter_set_unicode(&self.emitter, 1)
+ if line_break is not None:
+ if line_break == '\r':
+ yaml_emitter_set_break(&self.emitter, YAML_CR_BREAK)
+ elif line_break == '\n':
+ yaml_emitter_set_break(&self.emitter, YAML_LN_BREAK)
+ elif line_break == '\r\n':
+ yaml_emitter_set_break(&self.emitter, YAML_CRLN_BREAK)
+ self.document_start_implicit = 1
+ if explicit_start:
+ self.document_start_implicit = 0
+ self.document_end_implicit = 1
+ if explicit_end:
+ self.document_end_implicit = 0
+ self.use_version = version
+ self.use_tags = tags
+ self.serialized_nodes = {}
+ self.anchors = {}
+ self.last_alias_id = 0
+ self.closed = -1
+
+ def __dealloc__(self):
+ yaml_emitter_delete(&self.emitter)
+
+ def dispose(self):
+ pass
+
+ cdef object _emitter_error(self):
+ if self.emitter.error == YAML_MEMORY_ERROR:
+ return MemoryError
+ elif self.emitter.error == YAML_EMITTER_ERROR:
+ problem = PyUnicode_FromString(self.emitter.problem)
+ return EmitterError(problem)
+ raise ValueError(u"no emitter error")
+
+ cdef int _object_to_event(self, object event_object, yaml_event_t *event) except 0:
+ cdef yaml_encoding_t encoding
+ cdef yaml_version_directive_t version_directive_value
+ cdef yaml_version_directive_t *version_directive
+ cdef yaml_tag_directive_t tag_directives_value[128]
+ cdef yaml_tag_directive_t *tag_directives_start
+ cdef yaml_tag_directive_t *tag_directives_end
+ cdef int implicit
+ cdef int plain_implicit
+ cdef int quoted_implicit
+ cdef yaml_char_t *anchor
+ cdef yaml_char_t *tag
+ cdef yaml_char_t *value
+ cdef int length
+ cdef yaml_scalar_style_t scalar_style
+ cdef yaml_sequence_style_t sequence_style
+ cdef yaml_mapping_style_t mapping_style
+ event_class = event_object.__class__
+ if event_class is StreamStartEvent:
+ encoding = YAML_UTF8_ENCODING
+ if event_object.encoding == u'utf-16-le' or event_object.encoding == 'utf-16-le':
+ encoding = YAML_UTF16LE_ENCODING
+ elif event_object.encoding == u'utf-16-be' or event_object.encoding == 'utf-16-be':
+ encoding = YAML_UTF16BE_ENCODING
+ if event_object.encoding is None:
+ self.dump_unicode = 1
+ if self.dump_unicode == 1:
+ encoding = YAML_UTF8_ENCODING
+ yaml_stream_start_event_initialize(event, encoding)
+ elif event_class is StreamEndEvent:
+ yaml_stream_end_event_initialize(event)
+ elif event_class is DocumentStartEvent:
+ version_directive = NULL
+ if event_object.version:
+ version_directive_value.major = event_object.version[0]
+ version_directive_value.minor = event_object.version[1]
+ version_directive = &version_directive_value
+ tag_directives_start = NULL
+ tag_directives_end = NULL
+ if event_object.tags:
+ if len(event_object.tags) > 128:
+ raise ValueError(u"too many tags")
+ tag_directives_start = tag_directives_value
+ tag_directives_end = tag_directives_value
+ cache = []
+ for handle in event_object.tags:
+ prefix = event_object.tags[handle]
+ if PyUnicode_CheckExact(handle):
+ handle = PyUnicode_AsUTF8String(handle)
+ cache.append(handle)
+ if not PyBytes_CheckExact(handle):
+ raise TypeError(u"tag handle must be a string")
+ tag_directives_end.handle = PyBytes_AS_Yaml_STRING(handle)
+ if PyUnicode_CheckExact(prefix):
+ prefix = PyUnicode_AsUTF8String(prefix)
+ cache.append(prefix)
+ if not PyBytes_CheckExact(prefix):
+ raise TypeError(u"tag prefix must be a string")
+ tag_directives_end.prefix = PyBytes_AS_Yaml_STRING(prefix)
+ tag_directives_end = tag_directives_end+1
+ implicit = 1
+ if event_object.explicit:
+ implicit = 0
+ if yaml_document_start_event_initialize(event, version_directive,
+ tag_directives_start, tag_directives_end, implicit) == 0:
+ raise MemoryError
+ elif event_class is DocumentEndEvent:
+ implicit = 1
+ if event_object.explicit:
+ implicit = 0
+ yaml_document_end_event_initialize(event, implicit)
+ elif event_class is AliasEvent:
+ anchor = NULL
+ anchor_object = event_object.anchor
+ if PyUnicode_CheckExact(anchor_object):
+ anchor_object = PyUnicode_AsUTF8String(anchor_object)
+ if not PyBytes_CheckExact(anchor_object):
+ raise TypeError(u"anchor must be a string")
+ anchor = PyBytes_AS_Yaml_STRING(anchor_object)
+ if yaml_alias_event_initialize(event, anchor) == 0:
+ raise MemoryError
+ elif event_class is ScalarEvent:
+ anchor = NULL
+ anchor_object = event_object.anchor
+ if anchor_object is not None:
+ if PyUnicode_CheckExact(anchor_object):
+ anchor_object = PyUnicode_AsUTF8String(anchor_object)
+ if not PyBytes_CheckExact(anchor_object):
+ raise TypeError(u"anchor must be a string")
+ anchor = PyBytes_AS_Yaml_STRING(anchor_object)
+ tag = NULL
+ tag_object = event_object.tag
+ if tag_object is not None:
+ if PyUnicode_CheckExact(tag_object):
+ tag_object = PyUnicode_AsUTF8String(tag_object)
+ if not PyBytes_CheckExact(tag_object):
+ raise TypeError(u"tag must be a string")
+ tag = PyBytes_AS_Yaml_STRING(tag_object)
+ value_object = event_object.value
+ if PyUnicode_CheckExact(value_object):
+ value_object = PyUnicode_AsUTF8String(value_object)
+ if not PyBytes_CheckExact(value_object):
+ raise TypeError(u"value must be a string")
+ value = PyBytes_AS_Yaml_STRING(value_object)
+ length = PyBytes_GET_SIZE(value_object)
+ plain_implicit = 0
+ quoted_implicit = 0
+ if event_object.implicit is not None:
+ plain_implicit = event_object.implicit[0]
+ quoted_implicit = event_object.implicit[1]
+ style_object = event_object.style
+ scalar_style = YAML_PLAIN_SCALAR_STYLE
+ if style_object == "'" or style_object == u"'":
+ scalar_style = YAML_SINGLE_QUOTED_SCALAR_STYLE
+ elif style_object == "\"" or style_object == u"\"":
+ scalar_style = YAML_DOUBLE_QUOTED_SCALAR_STYLE
+ elif style_object == "|" or style_object == u"|":
+ scalar_style = YAML_LITERAL_SCALAR_STYLE
+ elif style_object == ">" or style_object == u">":
+ scalar_style = YAML_FOLDED_SCALAR_STYLE
+ if yaml_scalar_event_initialize(event, anchor, tag, value, length,
+ plain_implicit, quoted_implicit, scalar_style) == 0:
+ raise MemoryError
+ elif event_class is SequenceStartEvent:
+ anchor = NULL
+ anchor_object = event_object.anchor
+ if anchor_object is not None:
+ if PyUnicode_CheckExact(anchor_object):
+ anchor_object = PyUnicode_AsUTF8String(anchor_object)
+ if not PyBytes_CheckExact(anchor_object):
+ raise TypeError(u"anchor must be a string")
+ anchor = PyBytes_AS_Yaml_STRING(anchor_object)
+ tag = NULL
+ tag_object = event_object.tag
+ if tag_object is not None:
+ if PyUnicode_CheckExact(tag_object):
+ tag_object = PyUnicode_AsUTF8String(tag_object)
+ if not PyBytes_CheckExact(tag_object):
+ raise TypeError(u"tag must be a string")
+ tag = PyBytes_AS_Yaml_STRING(tag_object)
+ implicit = 0
+ if event_object.implicit:
+ implicit = 1
+ sequence_style = YAML_BLOCK_SEQUENCE_STYLE
+ if event_object.flow_style:
+ sequence_style = YAML_FLOW_SEQUENCE_STYLE
+ if yaml_sequence_start_event_initialize(event, anchor, tag,
+ implicit, sequence_style) == 0:
+ raise MemoryError
+ elif event_class is MappingStartEvent:
+ anchor = NULL
+ anchor_object = event_object.anchor
+ if anchor_object is not None:
+ if PyUnicode_CheckExact(anchor_object):
+ anchor_object = PyUnicode_AsUTF8String(anchor_object)
+ if not PyBytes_CheckExact(anchor_object):
+ raise TypeError(u"anchor must be a string")
+ anchor = PyBytes_AS_Yaml_STRING(anchor_object)
+ tag = NULL
+ tag_object = event_object.tag
+ if tag_object is not None:
+ if PyUnicode_CheckExact(tag_object):
+ tag_object = PyUnicode_AsUTF8String(tag_object)
+ if not PyBytes_CheckExact(tag_object):
+ raise TypeError(u"tag must be a string")
+ tag = PyBytes_AS_Yaml_STRING(tag_object)
+ implicit = 0
+ if event_object.implicit:
+ implicit = 1
+ mapping_style = YAML_BLOCK_MAPPING_STYLE
+ if event_object.flow_style:
+ mapping_style = YAML_FLOW_MAPPING_STYLE
+ if yaml_mapping_start_event_initialize(event, anchor, tag,
+ implicit, mapping_style) == 0:
+ raise MemoryError
+ elif event_class is SequenceEndEvent:
+ yaml_sequence_end_event_initialize(event)
+ elif event_class is MappingEndEvent:
+ yaml_mapping_end_event_initialize(event)
+ else:
+ raise TypeError(u"invalid event %s" % event_object)
+ return 1
+
+ def emit(self, event_object):
+ cdef yaml_event_t event
+ self._object_to_event(event_object, &event)
+ if yaml_emitter_emit(&self.emitter, &event) == 0:
+ error = self._emitter_error()
+ raise error
+
+ def open(self):
+ cdef yaml_event_t event
+ cdef yaml_encoding_t encoding
+ if self.closed == -1:
+ if self.use_encoding == u'utf-16-le' or self.use_encoding == 'utf-16-le':
+ encoding = YAML_UTF16LE_ENCODING
+ elif self.use_encoding == u'utf-16-be' or self.use_encoding == 'utf-16-be':
+ encoding = YAML_UTF16BE_ENCODING
+ else:
+ encoding = YAML_UTF8_ENCODING
+ if self.use_encoding is None:
+ self.dump_unicode = 1
+ if self.dump_unicode == 1:
+ encoding = YAML_UTF8_ENCODING
+ yaml_stream_start_event_initialize(&event, encoding)
+ if yaml_emitter_emit(&self.emitter, &event) == 0:
+ error = self._emitter_error()
+ raise error
+ self.closed = 0
+ elif self.closed == 1:
+ raise SerializerError(u"serializer is closed")
+ else:
+ raise SerializerError(u"serializer is already opened")
+
+ def close(self):
+ cdef yaml_event_t event
+ if self.closed == -1:
+ raise SerializerError(u"serializer is not opened")
+ elif self.closed == 0:
+ yaml_stream_end_event_initialize(&event)
+ if yaml_emitter_emit(&self.emitter, &event) == 0:
+ error = self._emitter_error()
+ raise error
+ self.closed = 1
+
+ def serialize(self, node):
+ cdef yaml_event_t event
+ cdef yaml_version_directive_t version_directive_value
+ cdef yaml_version_directive_t *version_directive
+ cdef yaml_tag_directive_t tag_directives_value[128]
+ cdef yaml_tag_directive_t *tag_directives_start
+ cdef yaml_tag_directive_t *tag_directives_end
+ if self.closed == -1:
+ raise SerializerError(u"serializer is not opened")
+ elif self.closed == 1:
+ raise SerializerError(u"serializer is closed")
+ cache = []
+ version_directive = NULL
+ if self.use_version:
+ version_directive_value.major = self.use_version[0]
+ version_directive_value.minor = self.use_version[1]
+ version_directive = &version_directive_value
+ tag_directives_start = NULL
+ tag_directives_end = NULL
+ if self.use_tags:
+ if len(self.use_tags) > 128:
+ raise ValueError(u"too many tags")
+ tag_directives_start = tag_directives_value
+ tag_directives_end = tag_directives_value
+ for handle in self.use_tags:
+ prefix = self.use_tags[handle]
+ if PyUnicode_CheckExact(handle):
+ handle = PyUnicode_AsUTF8String(handle)
+ cache.append(handle)
+ if not PyBytes_CheckExact(handle):
+ raise TypeError(u"tag handle must be a string")
+ tag_directives_end.handle = PyBytes_AS_Yaml_STRING(handle)
+ if PyUnicode_CheckExact(prefix):
+ prefix = PyUnicode_AsUTF8String(prefix)
+ cache.append(prefix)
+ if not PyBytes_CheckExact(prefix):
+ raise TypeError(u"tag prefix must be a string")
+ tag_directives_end.prefix = PyBytes_AS_Yaml_STRING(prefix)
+ tag_directives_end = tag_directives_end+1
+ if yaml_document_start_event_initialize(&event, version_directive,
+ tag_directives_start, tag_directives_end,
+ self.document_start_implicit) == 0:
+ raise MemoryError
+ if yaml_emitter_emit(&self.emitter, &event) == 0:
+ error = self._emitter_error()
+ raise error
+ self._anchor_node(node)
+ self._serialize_node(node, None, None)
+ yaml_document_end_event_initialize(&event, self.document_end_implicit)
+ if yaml_emitter_emit(&self.emitter, &event) == 0:
+ error = self._emitter_error()
+ raise error
+ self.serialized_nodes = {}
+ self.anchors = {}
+ self.last_alias_id = 0
+
+ cdef int _anchor_node(self, object node) except 0:
+ if node in self.anchors:
+ if self.anchors[node] is None:
+ self.last_alias_id = self.last_alias_id+1
+ self.anchors[node] = u"id%03d" % self.last_alias_id
+ else:
+ self.anchors[node] = None
+ node_class = node.__class__
+ if node_class is SequenceNode:
+ for item in node.value:
+ self._anchor_node(item)
+ elif node_class is MappingNode:
+ for key, value in node.value:
+ self._anchor_node(key)
+ self._anchor_node(value)
+ return 1
+
+ cdef int _serialize_node(self, object node, object parent, object index) except 0:
+ cdef yaml_event_t event
+ cdef int implicit
+ cdef int plain_implicit
+ cdef int quoted_implicit
+ cdef yaml_char_t *anchor
+ cdef yaml_char_t *tag
+ cdef yaml_char_t *value
+ cdef int length
+ cdef int item_index
+ cdef yaml_scalar_style_t scalar_style
+ cdef yaml_sequence_style_t sequence_style
+ cdef yaml_mapping_style_t mapping_style
+ anchor_object = self.anchors[node]
+ anchor = NULL
+ if anchor_object is not None:
+ if PyUnicode_CheckExact(anchor_object):
+ anchor_object = PyUnicode_AsUTF8String(anchor_object)
+ if not PyBytes_CheckExact(anchor_object):
+ raise TypeError(u"anchor must be a string")
+ anchor = PyBytes_AS_Yaml_STRING(anchor_object)
+ if node in self.serialized_nodes:
+ if yaml_alias_event_initialize(&event, anchor) == 0:
+ raise MemoryError
+ if yaml_emitter_emit(&self.emitter, &event) == 0:
+ error = self._emitter_error()
+ raise error
+ else:
+ node_class = node.__class__
+ self.serialized_nodes[node] = True
+ self.descend_resolver(parent, index)
+ if node_class is ScalarNode:
+ plain_implicit = 0
+ quoted_implicit = 0
+ tag_object = node.tag
+ if self.resolve(ScalarNode, node.value, (True, False)) == tag_object:
+ plain_implicit = 1
+ if self.resolve(ScalarNode, node.value, (False, True)) == tag_object:
+ quoted_implicit = 1
+ tag = NULL
+ if tag_object is not None:
+ if PyUnicode_CheckExact(tag_object):
+ tag_object = PyUnicode_AsUTF8String(tag_object)
+ if not PyBytes_CheckExact(tag_object):
+ raise TypeError(u"tag must be a string")
+ tag = PyBytes_AS_Yaml_STRING(tag_object)
+ value_object = node.value
+ if PyUnicode_CheckExact(value_object):
+ value_object = PyUnicode_AsUTF8String(value_object)
+ if not PyBytes_CheckExact(value_object):
+ raise TypeError(u"value must be a string")
+ value = PyBytes_AS_Yaml_STRING(value_object)
+ length = PyBytes_GET_SIZE(value_object)
+ style_object = node.style
+ scalar_style = YAML_PLAIN_SCALAR_STYLE
+ if style_object == "'" or style_object == u"'":
+ scalar_style = YAML_SINGLE_QUOTED_SCALAR_STYLE
+ elif style_object == "\"" or style_object == u"\"":
+ scalar_style = YAML_DOUBLE_QUOTED_SCALAR_STYLE
+ elif style_object == "|" or style_object == u"|":
+ scalar_style = YAML_LITERAL_SCALAR_STYLE
+ elif style_object == ">" or style_object == u">":
+ scalar_style = YAML_FOLDED_SCALAR_STYLE
+ if yaml_scalar_event_initialize(&event, anchor, tag, value, length,
+ plain_implicit, quoted_implicit, scalar_style) == 0:
+ raise MemoryError
+ if yaml_emitter_emit(&self.emitter, &event) == 0:
+ error = self._emitter_error()
+ raise error
+ elif node_class is SequenceNode:
+ implicit = 0
+ tag_object = node.tag
+ if self.resolve(SequenceNode, node.value, True) == tag_object:
+ implicit = 1
+ tag = NULL
+ if tag_object is not None:
+ if PyUnicode_CheckExact(tag_object):
+ tag_object = PyUnicode_AsUTF8String(tag_object)
+ if not PyBytes_CheckExact(tag_object):
+ raise TypeError(u"tag must be a string")
+ tag = PyBytes_AS_Yaml_STRING(tag_object)
+ sequence_style = YAML_BLOCK_SEQUENCE_STYLE
+ if node.flow_style:
+ sequence_style = YAML_FLOW_SEQUENCE_STYLE
+ if yaml_sequence_start_event_initialize(&event, anchor, tag,
+ implicit, sequence_style) == 0:
+ raise MemoryError
+ if yaml_emitter_emit(&self.emitter, &event) == 0:
+ error = self._emitter_error()
+ raise error
+ item_index = 0
+ for item in node.value:
+ self._serialize_node(item, node, item_index)
+ item_index = item_index+1
+ yaml_sequence_end_event_initialize(&event)
+ if yaml_emitter_emit(&self.emitter, &event) == 0:
+ error = self._emitter_error()
+ raise error
+ elif node_class is MappingNode:
+ implicit = 0
+ tag_object = node.tag
+ if self.resolve(MappingNode, node.value, True) == tag_object:
+ implicit = 1
+ tag = NULL
+ if tag_object is not None:
+ if PyUnicode_CheckExact(tag_object):
+ tag_object = PyUnicode_AsUTF8String(tag_object)
+ if not PyBytes_CheckExact(tag_object):
+ raise TypeError(u"tag must be a string")
+ tag = PyBytes_AS_Yaml_STRING(tag_object)
+ mapping_style = YAML_BLOCK_MAPPING_STYLE
+ if node.flow_style:
+ mapping_style = YAML_FLOW_MAPPING_STYLE
+ if yaml_mapping_start_event_initialize(&event, anchor, tag,
+ implicit, mapping_style) == 0:
+ raise MemoryError
+ if yaml_emitter_emit(&self.emitter, &event) == 0:
+ error = self._emitter_error()
+ raise error
+ for item_key, item_value in node.value:
+ self._serialize_node(item_key, node, None)
+ self._serialize_node(item_value, node, item_key)
+ yaml_mapping_end_event_initialize(&event)
+ if yaml_emitter_emit(&self.emitter, &event) == 0:
+ error = self._emitter_error()
+ raise error
+ self.ascend_resolver()
+ return 1
+
+cdef int output_handler(void *data, unsigned char *bufferu, size_t size) except 0:
+ cdef CEmitter emitter
+ cdef char *buffer
+ buffer = <char *>bufferu
+ emitter = <CEmitter>data
+ if emitter.dump_unicode == 0:
+ value = PyBytes_FromStringAndSize(buffer, size)
+ else:
+ value = PyUnicode_DecodeUTF8(buffer, size, 'strict')
+ emitter.stream.write(value)
+ return 1
+