diff options
Diffstat (limited to 'third_party/python/Mako/mako')
26 files changed, 8259 insertions, 0 deletions
diff --git a/third_party/python/Mako/mako/__init__.py b/third_party/python/Mako/mako/__init__.py new file mode 100644 index 0000000000..16d187c0ce --- /dev/null +++ b/third_party/python/Mako/mako/__init__.py @@ -0,0 +1,8 @@ +# mako/__init__.py +# Copyright 2006-2020 the Mako authors and contributors <see AUTHORS file> +# +# This module is part of Mako and is released under +# the MIT License: http://www.opensource.org/licenses/mit-license.php + + +__version__ = '1.1.2' diff --git a/third_party/python/Mako/mako/_ast_util.py b/third_party/python/Mako/mako/_ast_util.py new file mode 100644 index 0000000000..bdcdbf6913 --- /dev/null +++ b/third_party/python/Mako/mako/_ast_util.py @@ -0,0 +1,716 @@ +# mako/_ast_util.py +# Copyright 2006-2020 the Mako authors and contributors <see AUTHORS file> +# +# This module is part of Mako and is released under +# the MIT License: http://www.opensource.org/licenses/mit-license.php + +""" + ast + ~~~ + + This is a stripped down version of Armin Ronacher's ast module. + + :copyright: Copyright 2008 by Armin Ronacher. + :license: Python License. +""" + + +from _ast import Add +from _ast import And +from _ast import AST +from _ast import BitAnd +from _ast import BitOr +from _ast import BitXor +from _ast import Div +from _ast import Eq +from _ast import FloorDiv +from _ast import Gt +from _ast import GtE +from _ast import If +from _ast import In +from _ast import Invert +from _ast import Is +from _ast import IsNot +from _ast import LShift +from _ast import Lt +from _ast import LtE +from _ast import Mod +from _ast import Mult +from _ast import Name +from _ast import Not +from _ast import NotEq +from _ast import NotIn +from _ast import Or +from _ast import PyCF_ONLY_AST +from _ast import RShift +from _ast import Sub +from _ast import UAdd +from _ast import USub + +from mako.compat import arg_stringname + +BOOLOP_SYMBOLS = {And: "and", Or: "or"} + +BINOP_SYMBOLS = { + Add: "+", + Sub: "-", + Mult: "*", + Div: "/", + FloorDiv: "//", + Mod: "%", + LShift: "<<", + RShift: ">>", + BitOr: "|", + BitAnd: "&", + BitXor: "^", +} + +CMPOP_SYMBOLS = { + Eq: "==", + Gt: ">", + GtE: ">=", + In: "in", + Is: "is", + IsNot: "is not", + Lt: "<", + LtE: "<=", + NotEq: "!=", + NotIn: "not in", +} + +UNARYOP_SYMBOLS = {Invert: "~", Not: "not", UAdd: "+", USub: "-"} + +ALL_SYMBOLS = {} +ALL_SYMBOLS.update(BOOLOP_SYMBOLS) +ALL_SYMBOLS.update(BINOP_SYMBOLS) +ALL_SYMBOLS.update(CMPOP_SYMBOLS) +ALL_SYMBOLS.update(UNARYOP_SYMBOLS) + + +def parse(expr, filename="<unknown>", mode="exec"): + """Parse an expression into an AST node.""" + return compile(expr, filename, mode, PyCF_ONLY_AST) + + +def iter_fields(node): + """Iterate over all fields of a node, only yielding existing fields.""" + # CPython 2.5 compat + if not hasattr(node, "_fields") or not node._fields: + return + for field in node._fields: + try: + yield field, getattr(node, field) + except AttributeError: + pass + + +class NodeVisitor(object): + + """ + Walks the abstract syntax tree and call visitor functions for every node + found. The visitor functions may return values which will be forwarded + by the `visit` method. + + Per default the visitor functions for the nodes are ``'visit_'`` + + class name of the node. So a `TryFinally` node visit function would + be `visit_TryFinally`. This behavior can be changed by overriding + the `get_visitor` function. If no visitor function exists for a node + (return value `None`) the `generic_visit` visitor is used instead. + + Don't use the `NodeVisitor` if you want to apply changes to nodes during + traversing. For this a special visitor exists (`NodeTransformer`) that + allows modifications. + """ + + def get_visitor(self, node): + """ + Return the visitor function for this node or `None` if no visitor + exists for this node. In that case the generic visit function is + used instead. + """ + method = "visit_" + node.__class__.__name__ + return getattr(self, method, None) + + def visit(self, node): + """Visit a node.""" + f = self.get_visitor(node) + if f is not None: + return f(node) + return self.generic_visit(node) + + def generic_visit(self, node): + """Called if no explicit visitor function exists for a node.""" + for field, value in iter_fields(node): + if isinstance(value, list): + for item in value: + if isinstance(item, AST): + self.visit(item) + elif isinstance(value, AST): + self.visit(value) + + +class NodeTransformer(NodeVisitor): + + """ + Walks the abstract syntax tree and allows modifications of nodes. + + The `NodeTransformer` will walk the AST and use the return value of the + visitor functions to replace or remove the old node. If the return + value of the visitor function is `None` the node will be removed + from the previous location otherwise it's replaced with the return + value. The return value may be the original node in which case no + replacement takes place. + + Here an example transformer that rewrites all `foo` to `data['foo']`:: + + class RewriteName(NodeTransformer): + + def visit_Name(self, node): + return copy_location(Subscript( + value=Name(id='data', ctx=Load()), + slice=Index(value=Str(s=node.id)), + ctx=node.ctx + ), node) + + Keep in mind that if the node you're operating on has child nodes + you must either transform the child nodes yourself or call the generic + visit function for the node first. + + Nodes that were part of a collection of statements (that applies to + all statement nodes) may also return a list of nodes rather than just + a single node. + + Usually you use the transformer like this:: + + node = YourTransformer().visit(node) + """ + + def generic_visit(self, node): + for field, old_value in iter_fields(node): + old_value = getattr(node, field, None) + if isinstance(old_value, list): + new_values = [] + for value in old_value: + if isinstance(value, AST): + value = self.visit(value) + if value is None: + continue + elif not isinstance(value, AST): + new_values.extend(value) + continue + new_values.append(value) + old_value[:] = new_values + elif isinstance(old_value, AST): + new_node = self.visit(old_value) + if new_node is None: + delattr(node, field) + else: + setattr(node, field, new_node) + return node + + +class SourceGenerator(NodeVisitor): + + """ + This visitor is able to transform a well formed syntax tree into python + sourcecode. For more details have a look at the docstring of the + `node_to_source` function. + """ + + def __init__(self, indent_with): + self.result = [] + self.indent_with = indent_with + self.indentation = 0 + self.new_lines = 0 + + def write(self, x): + if self.new_lines: + if self.result: + self.result.append("\n" * self.new_lines) + self.result.append(self.indent_with * self.indentation) + self.new_lines = 0 + self.result.append(x) + + def newline(self, n=1): + self.new_lines = max(self.new_lines, n) + + def body(self, statements): + self.new_line = True + self.indentation += 1 + for stmt in statements: + self.visit(stmt) + self.indentation -= 1 + + def body_or_else(self, node): + self.body(node.body) + if node.orelse: + self.newline() + self.write("else:") + self.body(node.orelse) + + def signature(self, node): + want_comma = [] + + def write_comma(): + if want_comma: + self.write(", ") + else: + want_comma.append(True) + + padding = [None] * (len(node.args) - len(node.defaults)) + for arg, default in zip(node.args, padding + node.defaults): + write_comma() + self.visit(arg) + if default is not None: + self.write("=") + self.visit(default) + if node.vararg is not None: + write_comma() + self.write("*" + arg_stringname(node.vararg)) + if node.kwarg is not None: + write_comma() + self.write("**" + arg_stringname(node.kwarg)) + + def decorators(self, node): + for decorator in node.decorator_list: + self.newline() + self.write("@") + self.visit(decorator) + + # Statements + + def visit_Assign(self, node): + self.newline() + for idx, target in enumerate(node.targets): + if idx: + self.write(", ") + self.visit(target) + self.write(" = ") + self.visit(node.value) + + def visit_AugAssign(self, node): + self.newline() + self.visit(node.target) + self.write(BINOP_SYMBOLS[type(node.op)] + "=") + self.visit(node.value) + + def visit_ImportFrom(self, node): + self.newline() + self.write("from %s%s import " % ("." * node.level, node.module)) + for idx, item in enumerate(node.names): + if idx: + self.write(", ") + self.write(item) + + def visit_Import(self, node): + self.newline() + for item in node.names: + self.write("import ") + self.visit(item) + + def visit_Expr(self, node): + self.newline() + self.generic_visit(node) + + def visit_FunctionDef(self, node): + self.newline(n=2) + self.decorators(node) + self.newline() + self.write("def %s(" % node.name) + self.signature(node.args) + self.write("):") + self.body(node.body) + + def visit_ClassDef(self, node): + have_args = [] + + def paren_or_comma(): + if have_args: + self.write(", ") + else: + have_args.append(True) + self.write("(") + + self.newline(n=3) + self.decorators(node) + self.newline() + self.write("class %s" % node.name) + for base in node.bases: + paren_or_comma() + self.visit(base) + # XXX: the if here is used to keep this module compatible + # with python 2.6. + if hasattr(node, "keywords"): + for keyword in node.keywords: + paren_or_comma() + self.write(keyword.arg + "=") + self.visit(keyword.value) + if getattr(node, "starargs", None): + paren_or_comma() + self.write("*") + self.visit(node.starargs) + if getattr(node, "kwargs", None): + paren_or_comma() + self.write("**") + self.visit(node.kwargs) + self.write(have_args and "):" or ":") + self.body(node.body) + + def visit_If(self, node): + self.newline() + self.write("if ") + self.visit(node.test) + self.write(":") + self.body(node.body) + while True: + else_ = node.orelse + if len(else_) == 1 and isinstance(else_[0], If): + node = else_[0] + self.newline() + self.write("elif ") + self.visit(node.test) + self.write(":") + self.body(node.body) + else: + self.newline() + self.write("else:") + self.body(else_) + break + + def visit_For(self, node): + self.newline() + self.write("for ") + self.visit(node.target) + self.write(" in ") + self.visit(node.iter) + self.write(":") + self.body_or_else(node) + + def visit_While(self, node): + self.newline() + self.write("while ") + self.visit(node.test) + self.write(":") + self.body_or_else(node) + + def visit_With(self, node): + self.newline() + self.write("with ") + self.visit(node.context_expr) + if node.optional_vars is not None: + self.write(" as ") + self.visit(node.optional_vars) + self.write(":") + self.body(node.body) + + def visit_Pass(self, node): + self.newline() + self.write("pass") + + def visit_Print(self, node): + # XXX: python 2.6 only + self.newline() + self.write("print ") + want_comma = False + if node.dest is not None: + self.write(" >> ") + self.visit(node.dest) + want_comma = True + for value in node.values: + if want_comma: + self.write(", ") + self.visit(value) + want_comma = True + if not node.nl: + self.write(",") + + def visit_Delete(self, node): + self.newline() + self.write("del ") + for idx, target in enumerate(node): + if idx: + self.write(", ") + self.visit(target) + + def visit_TryExcept(self, node): + self.newline() + self.write("try:") + self.body(node.body) + for handler in node.handlers: + self.visit(handler) + + def visit_TryFinally(self, node): + self.newline() + self.write("try:") + self.body(node.body) + self.newline() + self.write("finally:") + self.body(node.finalbody) + + def visit_Global(self, node): + self.newline() + self.write("global " + ", ".join(node.names)) + + def visit_Nonlocal(self, node): + self.newline() + self.write("nonlocal " + ", ".join(node.names)) + + def visit_Return(self, node): + self.newline() + self.write("return ") + self.visit(node.value) + + def visit_Break(self, node): + self.newline() + self.write("break") + + def visit_Continue(self, node): + self.newline() + self.write("continue") + + def visit_Raise(self, node): + # XXX: Python 2.6 / 3.0 compatibility + self.newline() + self.write("raise") + if hasattr(node, "exc") and node.exc is not None: + self.write(" ") + self.visit(node.exc) + if node.cause is not None: + self.write(" from ") + self.visit(node.cause) + elif hasattr(node, "type") and node.type is not None: + self.visit(node.type) + if node.inst is not None: + self.write(", ") + self.visit(node.inst) + if node.tback is not None: + self.write(", ") + self.visit(node.tback) + + # Expressions + + def visit_Attribute(self, node): + self.visit(node.value) + self.write("." + node.attr) + + def visit_Call(self, node): + want_comma = [] + + def write_comma(): + if want_comma: + self.write(", ") + else: + want_comma.append(True) + + self.visit(node.func) + self.write("(") + for arg in node.args: + write_comma() + self.visit(arg) + for keyword in node.keywords: + write_comma() + self.write(keyword.arg + "=") + self.visit(keyword.value) + if getattr(node, "starargs", None): + write_comma() + self.write("*") + self.visit(node.starargs) + if getattr(node, "kwargs", None): + write_comma() + self.write("**") + self.visit(node.kwargs) + self.write(")") + + def visit_Name(self, node): + self.write(node.id) + + def visit_NameConstant(self, node): + self.write(str(node.value)) + + def visit_arg(self, node): + self.write(node.arg) + + def visit_Str(self, node): + self.write(repr(node.s)) + + def visit_Bytes(self, node): + self.write(repr(node.s)) + + def visit_Num(self, node): + self.write(repr(node.n)) + + # newly needed in Python 3.8 + def visit_Constant(self, node): + self.write(repr(node.value)) + + def visit_Tuple(self, node): + self.write("(") + idx = -1 + for idx, item in enumerate(node.elts): + if idx: + self.write(", ") + self.visit(item) + self.write(idx and ")" or ",)") + + def sequence_visit(left, right): + def visit(self, node): + self.write(left) + for idx, item in enumerate(node.elts): + if idx: + self.write(", ") + self.visit(item) + self.write(right) + + return visit + + visit_List = sequence_visit("[", "]") + visit_Set = sequence_visit("{", "}") + del sequence_visit + + def visit_Dict(self, node): + self.write("{") + for idx, (key, value) in enumerate(zip(node.keys, node.values)): + if idx: + self.write(", ") + self.visit(key) + self.write(": ") + self.visit(value) + self.write("}") + + def visit_BinOp(self, node): + self.write("(") + self.visit(node.left) + self.write(" %s " % BINOP_SYMBOLS[type(node.op)]) + self.visit(node.right) + self.write(")") + + def visit_BoolOp(self, node): + self.write("(") + for idx, value in enumerate(node.values): + if idx: + self.write(" %s " % BOOLOP_SYMBOLS[type(node.op)]) + self.visit(value) + self.write(")") + + def visit_Compare(self, node): + self.write("(") + self.visit(node.left) + for op, right in zip(node.ops, node.comparators): + self.write(" %s " % CMPOP_SYMBOLS[type(op)]) + self.visit(right) + self.write(")") + + def visit_UnaryOp(self, node): + self.write("(") + op = UNARYOP_SYMBOLS[type(node.op)] + self.write(op) + if op == "not": + self.write(" ") + self.visit(node.operand) + self.write(")") + + def visit_Subscript(self, node): + self.visit(node.value) + self.write("[") + self.visit(node.slice) + self.write("]") + + def visit_Slice(self, node): + if node.lower is not None: + self.visit(node.lower) + self.write(":") + if node.upper is not None: + self.visit(node.upper) + if node.step is not None: + self.write(":") + if not (isinstance(node.step, Name) and node.step.id == "None"): + self.visit(node.step) + + def visit_ExtSlice(self, node): + for idx, item in node.dims: + if idx: + self.write(", ") + self.visit(item) + + def visit_Yield(self, node): + self.write("yield ") + self.visit(node.value) + + def visit_Lambda(self, node): + self.write("lambda ") + self.signature(node.args) + self.write(": ") + self.visit(node.body) + + def visit_Ellipsis(self, node): + self.write("Ellipsis") + + def generator_visit(left, right): + def visit(self, node): + self.write(left) + self.visit(node.elt) + for comprehension in node.generators: + self.visit(comprehension) + self.write(right) + + return visit + + visit_ListComp = generator_visit("[", "]") + visit_GeneratorExp = generator_visit("(", ")") + visit_SetComp = generator_visit("{", "}") + del generator_visit + + def visit_DictComp(self, node): + self.write("{") + self.visit(node.key) + self.write(": ") + self.visit(node.value) + for comprehension in node.generators: + self.visit(comprehension) + self.write("}") + + def visit_IfExp(self, node): + self.visit(node.body) + self.write(" if ") + self.visit(node.test) + self.write(" else ") + self.visit(node.orelse) + + def visit_Starred(self, node): + self.write("*") + self.visit(node.value) + + def visit_Repr(self, node): + # XXX: python 2.6 only + self.write("`") + self.visit(node.value) + self.write("`") + + # Helper Nodes + + def visit_alias(self, node): + self.write(node.name) + if node.asname is not None: + self.write(" as " + node.asname) + + def visit_comprehension(self, node): + self.write(" for ") + self.visit(node.target) + self.write(" in ") + self.visit(node.iter) + if node.ifs: + for if_ in node.ifs: + self.write(" if ") + self.visit(if_) + + def visit_excepthandler(self, node): + self.newline() + self.write("except") + if node.type is not None: + self.write(" ") + self.visit(node.type) + if node.name is not None: + self.write(" as ") + self.visit(node.name) + self.write(":") + self.body(node.body) diff --git a/third_party/python/Mako/mako/ast.py b/third_party/python/Mako/mako/ast.py new file mode 100644 index 0000000000..cfae28062c --- /dev/null +++ b/third_party/python/Mako/mako/ast.py @@ -0,0 +1,205 @@ +# mako/ast.py +# Copyright 2006-2020 the Mako authors and contributors <see AUTHORS file> +# +# This module is part of Mako and is released under +# the MIT License: http://www.opensource.org/licenses/mit-license.php + +"""utilities for analyzing expressions and blocks of Python +code, as well as generating Python from AST nodes""" + +import re + +from mako import compat +from mako import exceptions +from mako import pyparser + + +class PythonCode(object): + + """represents information about a string containing Python code""" + + def __init__(self, code, **exception_kwargs): + self.code = code + + # represents all identifiers which are assigned to at some point in + # the code + self.declared_identifiers = set() + + # represents all identifiers which are referenced before their + # assignment, if any + self.undeclared_identifiers = set() + + # note that an identifier can be in both the undeclared and declared + # lists. + + # using AST to parse instead of using code.co_varnames, + # code.co_names has several advantages: + # - we can locate an identifier as "undeclared" even if + # its declared later in the same block of code + # - AST is less likely to break with version changes + # (for example, the behavior of co_names changed a little bit + # in python version 2.5) + if isinstance(code, compat.string_types): + expr = pyparser.parse(code.lstrip(), "exec", **exception_kwargs) + else: + expr = code + + f = pyparser.FindIdentifiers(self, **exception_kwargs) + f.visit(expr) + + +class ArgumentList(object): + + """parses a fragment of code as a comma-separated list of expressions""" + + def __init__(self, code, **exception_kwargs): + self.codeargs = [] + self.args = [] + self.declared_identifiers = set() + self.undeclared_identifiers = set() + if isinstance(code, compat.string_types): + if re.match(r"\S", code) and not re.match(r",\s*$", code): + # if theres text and no trailing comma, insure its parsed + # as a tuple by adding a trailing comma + code += "," + expr = pyparser.parse(code, "exec", **exception_kwargs) + else: + expr = code + + f = pyparser.FindTuple(self, PythonCode, **exception_kwargs) + f.visit(expr) + + +class PythonFragment(PythonCode): + + """extends PythonCode to provide identifier lookups in partial control + statements + + e.g.:: + + for x in 5: + elif y==9: + except (MyException, e): + + """ + + def __init__(self, code, **exception_kwargs): + m = re.match(r"^(\w+)(?:\s+(.*?))?:\s*(#|$)", code.strip(), re.S) + if not m: + raise exceptions.CompileException( + "Fragment '%s' is not a partial control statement" % code, + **exception_kwargs + ) + if m.group(3): + code = code[: m.start(3)] + (keyword, expr) = m.group(1, 2) + if keyword in ["for", "if", "while"]: + code = code + "pass" + elif keyword == "try": + code = code + "pass\nexcept:pass" + elif keyword == "elif" or keyword == "else": + code = "if False:pass\n" + code + "pass" + elif keyword == "except": + code = "try:pass\n" + code + "pass" + elif keyword == "with": + code = code + "pass" + else: + raise exceptions.CompileException( + "Unsupported control keyword: '%s'" % keyword, + **exception_kwargs + ) + super(PythonFragment, self).__init__(code, **exception_kwargs) + + +class FunctionDecl(object): + + """function declaration""" + + def __init__(self, code, allow_kwargs=True, **exception_kwargs): + self.code = code + expr = pyparser.parse(code, "exec", **exception_kwargs) + + f = pyparser.ParseFunc(self, **exception_kwargs) + f.visit(expr) + if not hasattr(self, "funcname"): + raise exceptions.CompileException( + "Code '%s' is not a function declaration" % code, + **exception_kwargs + ) + if not allow_kwargs and self.kwargs: + raise exceptions.CompileException( + "'**%s' keyword argument not allowed here" + % self.kwargnames[-1], + **exception_kwargs + ) + + def get_argument_expressions(self, as_call=False): + """Return the argument declarations of this FunctionDecl as a printable + list. + + By default the return value is appropriate for writing in a ``def``; + set `as_call` to true to build arguments to be passed to the function + instead (assuming locals with the same names as the arguments exist). + """ + + namedecls = [] + + # Build in reverse order, since defaults and slurpy args come last + argnames = self.argnames[::-1] + kwargnames = self.kwargnames[::-1] + defaults = self.defaults[::-1] + kwdefaults = self.kwdefaults[::-1] + + # Named arguments + if self.kwargs: + namedecls.append("**" + kwargnames.pop(0)) + + for name in kwargnames: + # Keyword-only arguments must always be used by name, so even if + # this is a call, print out `foo=foo` + if as_call: + namedecls.append("%s=%s" % (name, name)) + elif kwdefaults: + default = kwdefaults.pop(0) + if default is None: + # The AST always gives kwargs a default, since you can do + # `def foo(*, a=1, b, c=3)` + namedecls.append(name) + else: + namedecls.append( + "%s=%s" + % (name, pyparser.ExpressionGenerator(default).value()) + ) + else: + namedecls.append(name) + + # Positional arguments + if self.varargs: + namedecls.append("*" + argnames.pop(0)) + + for name in argnames: + if as_call or not defaults: + namedecls.append(name) + else: + default = defaults.pop(0) + namedecls.append( + "%s=%s" + % (name, pyparser.ExpressionGenerator(default).value()) + ) + + namedecls.reverse() + return namedecls + + @property + def allargnames(self): + return tuple(self.argnames) + tuple(self.kwargnames) + + +class FunctionArgs(FunctionDecl): + + """the argument portion of a function declaration""" + + def __init__(self, code, **kwargs): + super(FunctionArgs, self).__init__( + "def ANON(%s):pass" % code, **kwargs + ) diff --git a/third_party/python/Mako/mako/cache.py b/third_party/python/Mako/mako/cache.py new file mode 100644 index 0000000000..26aa93ee38 --- /dev/null +++ b/third_party/python/Mako/mako/cache.py @@ -0,0 +1,240 @@ +# mako/cache.py +# Copyright 2006-2020 the Mako authors and contributors <see AUTHORS file> +# +# This module is part of Mako and is released under +# the MIT License: http://www.opensource.org/licenses/mit-license.php + +from mako import compat +from mako import util + +_cache_plugins = util.PluginLoader("mako.cache") + +register_plugin = _cache_plugins.register +register_plugin("beaker", "mako.ext.beaker_cache", "BeakerCacheImpl") + + +class Cache(object): + + """Represents a data content cache made available to the module + space of a specific :class:`.Template` object. + + .. versionadded:: 0.6 + :class:`.Cache` by itself is mostly a + container for a :class:`.CacheImpl` object, which implements + a fixed API to provide caching services; specific subclasses exist to + implement different + caching strategies. Mako includes a backend that works with + the Beaker caching system. Beaker itself then supports + a number of backends (i.e. file, memory, memcached, etc.) + + The construction of a :class:`.Cache` is part of the mechanics + of a :class:`.Template`, and programmatic access to this + cache is typically via the :attr:`.Template.cache` attribute. + + """ + + impl = None + """Provide the :class:`.CacheImpl` in use by this :class:`.Cache`. + + This accessor allows a :class:`.CacheImpl` with additional + methods beyond that of :class:`.Cache` to be used programmatically. + + """ + + id = None + """Return the 'id' that identifies this cache. + + This is a value that should be globally unique to the + :class:`.Template` associated with this cache, and can + be used by a caching system to name a local container + for data specific to this template. + + """ + + starttime = None + """Epochal time value for when the owning :class:`.Template` was + first compiled. + + A cache implementation may wish to invalidate data earlier than + this timestamp; this has the effect of the cache for a specific + :class:`.Template` starting clean any time the :class:`.Template` + is recompiled, such as when the original template file changed on + the filesystem. + + """ + + def __init__(self, template, *args): + # check for a stale template calling the + # constructor + if isinstance(template, compat.string_types) and args: + return + self.template = template + self.id = template.module.__name__ + self.starttime = template.module._modified_time + self._def_regions = {} + self.impl = self._load_impl(self.template.cache_impl) + + def _load_impl(self, name): + return _cache_plugins.load(name)(self) + + def get_or_create(self, key, creation_function, **kw): + """Retrieve a value from the cache, using the given creation function + to generate a new value.""" + + return self._ctx_get_or_create(key, creation_function, None, **kw) + + def _ctx_get_or_create(self, key, creation_function, context, **kw): + """Retrieve a value from the cache, using the given creation function + to generate a new value.""" + + if not self.template.cache_enabled: + return creation_function() + + return self.impl.get_or_create( + key, creation_function, **self._get_cache_kw(kw, context) + ) + + def set(self, key, value, **kw): + r"""Place a value in the cache. + + :param key: the value's key. + :param value: the value. + :param \**kw: cache configuration arguments. + + """ + + self.impl.set(key, value, **self._get_cache_kw(kw, None)) + + put = set + """A synonym for :meth:`.Cache.set`. + + This is here for backwards compatibility. + + """ + + def get(self, key, **kw): + r"""Retrieve a value from the cache. + + :param key: the value's key. + :param \**kw: cache configuration arguments. The + backend is configured using these arguments upon first request. + Subsequent requests that use the same series of configuration + values will use that same backend. + + """ + return self.impl.get(key, **self._get_cache_kw(kw, None)) + + def invalidate(self, key, **kw): + r"""Invalidate a value in the cache. + + :param key: the value's key. + :param \**kw: cache configuration arguments. The + backend is configured using these arguments upon first request. + Subsequent requests that use the same series of configuration + values will use that same backend. + + """ + self.impl.invalidate(key, **self._get_cache_kw(kw, None)) + + def invalidate_body(self): + """Invalidate the cached content of the "body" method for this + template. + + """ + self.invalidate("render_body", __M_defname="render_body") + + def invalidate_def(self, name): + """Invalidate the cached content of a particular ``<%def>`` within this + template. + + """ + + self.invalidate("render_%s" % name, __M_defname="render_%s" % name) + + def invalidate_closure(self, name): + """Invalidate a nested ``<%def>`` within this template. + + Caching of nested defs is a blunt tool as there is no + management of scope -- nested defs that use cache tags + need to have names unique of all other nested defs in the + template, else their content will be overwritten by + each other. + + """ + + self.invalidate(name, __M_defname=name) + + def _get_cache_kw(self, kw, context): + defname = kw.pop("__M_defname", None) + if not defname: + tmpl_kw = self.template.cache_args.copy() + tmpl_kw.update(kw) + elif defname in self._def_regions: + tmpl_kw = self._def_regions[defname] + else: + tmpl_kw = self.template.cache_args.copy() + tmpl_kw.update(kw) + self._def_regions[defname] = tmpl_kw + if context and self.impl.pass_context: + tmpl_kw = tmpl_kw.copy() + tmpl_kw.setdefault("context", context) + return tmpl_kw + + +class CacheImpl(object): + + """Provide a cache implementation for use by :class:`.Cache`.""" + + def __init__(self, cache): + self.cache = cache + + pass_context = False + """If ``True``, the :class:`.Context` will be passed to + :meth:`get_or_create <.CacheImpl.get_or_create>` as the name ``'context'``. + """ + + def get_or_create(self, key, creation_function, **kw): + r"""Retrieve a value from the cache, using the given creation function + to generate a new value. + + This function *must* return a value, either from + the cache, or via the given creation function. + If the creation function is called, the newly + created value should be populated into the cache + under the given key before being returned. + + :param key: the value's key. + :param creation_function: function that when called generates + a new value. + :param \**kw: cache configuration arguments. + + """ + raise NotImplementedError() + + def set(self, key, value, **kw): + r"""Place a value in the cache. + + :param key: the value's key. + :param value: the value. + :param \**kw: cache configuration arguments. + + """ + raise NotImplementedError() + + def get(self, key, **kw): + r"""Retrieve a value from the cache. + + :param key: the value's key. + :param \**kw: cache configuration arguments. + + """ + raise NotImplementedError() + + def invalidate(self, key, **kw): + r"""Invalidate a value in the cache. + + :param key: the value's key. + :param \**kw: cache configuration arguments. + + """ + raise NotImplementedError() diff --git a/third_party/python/Mako/mako/cmd.py b/third_party/python/Mako/mako/cmd.py new file mode 100644 index 0000000000..c0f2c754ec --- /dev/null +++ b/third_party/python/Mako/mako/cmd.py @@ -0,0 +1,103 @@ +# mako/cmd.py +# Copyright 2006-2020 the Mako authors and contributors <see AUTHORS file> +# +# This module is part of Mako and is released under +# the MIT License: http://www.opensource.org/licenses/mit-license.php +from argparse import ArgumentParser +import io +from os.path import dirname +from os.path import isfile +import sys + +from mako import exceptions +from mako.lookup import TemplateLookup +from mako.template import Template + + +def varsplit(var): + if "=" not in var: + return (var, "") + return var.split("=", 1) + + +def _exit(): + sys.stderr.write(exceptions.text_error_template().render()) + sys.exit(1) + + +def cmdline(argv=None): + + parser = ArgumentParser() + parser.add_argument( + "--var", + default=[], + action="append", + help="variable (can be used multiple times, use name=value)", + ) + parser.add_argument( + "--template-dir", + default=[], + action="append", + help="Directory to use for template lookup (multiple " + "directories may be provided). If not given then if the " + "template is read from stdin, the value defaults to be " + "the current directory, otherwise it defaults to be the " + "parent directory of the file provided.", + ) + parser.add_argument( + "--output-encoding", default=None, help="force output encoding" + ) + parser.add_argument( + "--output-file", + default=None, + help="Write to file upon successful render instead of stdout", + ) + parser.add_argument("input", nargs="?", default="-") + + options = parser.parse_args(argv) + + output_encoding = options.output_encoding + output_file = options.output_file + + if options.input == "-": + lookup_dirs = options.template_dir or ["."] + lookup = TemplateLookup(lookup_dirs) + try: + template = Template( + sys.stdin.read(), + lookup=lookup, + output_encoding=output_encoding, + ) + except: + _exit() + else: + filename = options.input + if not isfile(filename): + raise SystemExit("error: can't find %s" % filename) + lookup_dirs = options.template_dir or [dirname(filename)] + lookup = TemplateLookup(lookup_dirs) + try: + template = Template( + filename=filename, + lookup=lookup, + output_encoding=output_encoding, + ) + except: + _exit() + + kw = dict([varsplit(var) for var in options.var]) + try: + rendered = template.render(**kw) + except: + _exit() + else: + if output_file: + io.open(output_file, "wt", encoding=output_encoding).write( + rendered + ) + else: + sys.stdout.write(rendered) + + +if __name__ == "__main__": + cmdline() diff --git a/third_party/python/Mako/mako/codegen.py b/third_party/python/Mako/mako/codegen.py new file mode 100644 index 0000000000..a9ae55b847 --- /dev/null +++ b/third_party/python/Mako/mako/codegen.py @@ -0,0 +1,1318 @@ +# mako/codegen.py +# Copyright 2006-2020 the Mako authors and contributors <see AUTHORS file> +# +# This module is part of Mako and is released under +# the MIT License: http://www.opensource.org/licenses/mit-license.php + +"""provides functionality for rendering a parsetree constructing into module +source code.""" + +import json +import re +import time + +from mako import ast +from mako import compat +from mako import exceptions +from mako import filters +from mako import parsetree +from mako import util +from mako.pygen import PythonPrinter + + +MAGIC_NUMBER = 10 + +# names which are hardwired into the +# template and are not accessed via the +# context itself +TOPLEVEL_DECLARED = set(["UNDEFINED", "STOP_RENDERING"]) +RESERVED_NAMES = set(["context", "loop"]).union(TOPLEVEL_DECLARED) + + +def compile( # noqa + node, + uri, + filename=None, + default_filters=None, + buffer_filters=None, + imports=None, + future_imports=None, + source_encoding=None, + generate_magic_comment=True, + disable_unicode=False, + strict_undefined=False, + enable_loop=True, + reserved_names=frozenset(), +): + """Generate module source code given a parsetree node, + uri, and optional source filename""" + + # if on Py2K, push the "source_encoding" string to be + # a bytestring itself, as we will be embedding it into + # the generated source and we don't want to coerce the + # result into a unicode object, in "disable_unicode" mode + if not compat.py3k and isinstance(source_encoding, compat.text_type): + source_encoding = source_encoding.encode(source_encoding) + + buf = util.FastEncodingBuffer() + + printer = PythonPrinter(buf) + _GenerateRenderMethod( + printer, + _CompileContext( + uri, + filename, + default_filters, + buffer_filters, + imports, + future_imports, + source_encoding, + generate_magic_comment, + disable_unicode, + strict_undefined, + enable_loop, + reserved_names, + ), + node, + ) + return buf.getvalue() + + +class _CompileContext(object): + def __init__( + self, + uri, + filename, + default_filters, + buffer_filters, + imports, + future_imports, + source_encoding, + generate_magic_comment, + disable_unicode, + strict_undefined, + enable_loop, + reserved_names, + ): + self.uri = uri + self.filename = filename + self.default_filters = default_filters + self.buffer_filters = buffer_filters + self.imports = imports + self.future_imports = future_imports + self.source_encoding = source_encoding + self.generate_magic_comment = generate_magic_comment + self.disable_unicode = disable_unicode + self.strict_undefined = strict_undefined + self.enable_loop = enable_loop + self.reserved_names = reserved_names + + +class _GenerateRenderMethod(object): + + """A template visitor object which generates the + full module source for a template. + + """ + + def __init__(self, printer, compiler, node): + self.printer = printer + self.compiler = compiler + self.node = node + self.identifier_stack = [None] + self.in_def = isinstance(node, (parsetree.DefTag, parsetree.BlockTag)) + + if self.in_def: + name = "render_%s" % node.funcname + args = node.get_argument_expressions() + filtered = len(node.filter_args.args) > 0 + buffered = eval(node.attributes.get("buffered", "False")) + cached = eval(node.attributes.get("cached", "False")) + defs = None + pagetag = None + if node.is_block and not node.is_anonymous: + args += ["**pageargs"] + else: + defs = self.write_toplevel() + pagetag = self.compiler.pagetag + name = "render_body" + if pagetag is not None: + args = pagetag.body_decl.get_argument_expressions() + if not pagetag.body_decl.kwargs: + args += ["**pageargs"] + cached = eval(pagetag.attributes.get("cached", "False")) + self.compiler.enable_loop = self.compiler.enable_loop or eval( + pagetag.attributes.get("enable_loop", "False") + ) + else: + args = ["**pageargs"] + cached = False + buffered = filtered = False + if args is None: + args = ["context"] + else: + args = [a for a in ["context"] + args] + + self.write_render_callable( + pagetag or node, name, args, buffered, filtered, cached + ) + + if defs is not None: + for node in defs: + _GenerateRenderMethod(printer, compiler, node) + + if not self.in_def: + self.write_metadata_struct() + + def write_metadata_struct(self): + self.printer.source_map[self.printer.lineno] = max( + self.printer.source_map + ) + struct = { + "filename": self.compiler.filename, + "uri": self.compiler.uri, + "source_encoding": self.compiler.source_encoding, + "line_map": self.printer.source_map, + } + self.printer.writelines( + '"""', + "__M_BEGIN_METADATA", + json.dumps(struct), + "__M_END_METADATA\n" '"""', + ) + + @property + def identifiers(self): + return self.identifier_stack[-1] + + def write_toplevel(self): + """Traverse a template structure for module-level directives and + generate the start of module-level code. + + """ + inherit = [] + namespaces = {} + module_code = [] + + self.compiler.pagetag = None + + class FindTopLevel(object): + def visitInheritTag(s, node): + inherit.append(node) + + def visitNamespaceTag(s, node): + namespaces[node.name] = node + + def visitPageTag(s, node): + self.compiler.pagetag = node + + def visitCode(s, node): + if node.ismodule: + module_code.append(node) + + f = FindTopLevel() + for n in self.node.nodes: + n.accept_visitor(f) + + self.compiler.namespaces = namespaces + + module_ident = set() + for n in module_code: + module_ident = module_ident.union(n.declared_identifiers()) + + module_identifiers = _Identifiers(self.compiler) + module_identifiers.declared = module_ident + + # module-level names, python code + if ( + self.compiler.generate_magic_comment + and self.compiler.source_encoding + ): + self.printer.writeline( + "# -*- coding:%s -*-" % self.compiler.source_encoding + ) + + if self.compiler.future_imports: + self.printer.writeline( + "from __future__ import %s" + % (", ".join(self.compiler.future_imports),) + ) + self.printer.writeline("from mako import runtime, filters, cache") + self.printer.writeline("UNDEFINED = runtime.UNDEFINED") + self.printer.writeline("STOP_RENDERING = runtime.STOP_RENDERING") + self.printer.writeline("__M_dict_builtin = dict") + self.printer.writeline("__M_locals_builtin = locals") + self.printer.writeline("_magic_number = %r" % MAGIC_NUMBER) + self.printer.writeline("_modified_time = %r" % time.time()) + self.printer.writeline("_enable_loop = %r" % self.compiler.enable_loop) + self.printer.writeline( + "_template_filename = %r" % self.compiler.filename + ) + self.printer.writeline("_template_uri = %r" % self.compiler.uri) + self.printer.writeline( + "_source_encoding = %r" % self.compiler.source_encoding + ) + if self.compiler.imports: + buf = "" + for imp in self.compiler.imports: + buf += imp + "\n" + self.printer.writeline(imp) + impcode = ast.PythonCode( + buf, + source="", + lineno=0, + pos=0, + filename="template defined imports", + ) + else: + impcode = None + + main_identifiers = module_identifiers.branch(self.node) + mit = module_identifiers.topleveldefs + module_identifiers.topleveldefs = mit.union( + main_identifiers.topleveldefs + ) + module_identifiers.declared.update(TOPLEVEL_DECLARED) + if impcode: + module_identifiers.declared.update(impcode.declared_identifiers) + + self.compiler.identifiers = module_identifiers + self.printer.writeline( + "_exports = %r" + % [n.name for n in main_identifiers.topleveldefs.values()] + ) + self.printer.write_blanks(2) + + if len(module_code): + self.write_module_code(module_code) + + if len(inherit): + self.write_namespaces(namespaces) + self.write_inherit(inherit[-1]) + elif len(namespaces): + self.write_namespaces(namespaces) + + return list(main_identifiers.topleveldefs.values()) + + def write_render_callable( + self, node, name, args, buffered, filtered, cached + ): + """write a top-level render callable. + + this could be the main render() method or that of a top-level def.""" + + if self.in_def: + decorator = node.decorator + if decorator: + self.printer.writeline( + "@runtime._decorate_toplevel(%s)" % decorator + ) + + self.printer.start_source(node.lineno) + self.printer.writelines( + "def %s(%s):" % (name, ",".join(args)), + # push new frame, assign current frame to __M_caller + "__M_caller = context.caller_stack._push_frame()", + "try:", + ) + if buffered or filtered or cached: + self.printer.writeline("context._push_buffer()") + + self.identifier_stack.append( + self.compiler.identifiers.branch(self.node) + ) + if (not self.in_def or self.node.is_block) and "**pageargs" in args: + self.identifier_stack[-1].argument_declared.add("pageargs") + + if not self.in_def and ( + len(self.identifiers.locally_assigned) > 0 + or len(self.identifiers.argument_declared) > 0 + ): + self.printer.writeline( + "__M_locals = __M_dict_builtin(%s)" + % ",".join( + [ + "%s=%s" % (x, x) + for x in self.identifiers.argument_declared + ] + ) + ) + + self.write_variable_declares(self.identifiers, toplevel=True) + + for n in self.node.nodes: + n.accept_visitor(self) + + self.write_def_finish(self.node, buffered, filtered, cached) + self.printer.writeline(None) + self.printer.write_blanks(2) + if cached: + self.write_cache_decorator( + node, name, args, buffered, self.identifiers, toplevel=True + ) + + def write_module_code(self, module_code): + """write module-level template code, i.e. that which + is enclosed in <%! %> tags in the template.""" + for n in module_code: + self.printer.write_indented_block(n.text, starting_lineno=n.lineno) + + def write_inherit(self, node): + """write the module-level inheritance-determination callable.""" + + self.printer.writelines( + "def _mako_inherit(template, context):", + "_mako_generate_namespaces(context)", + "return runtime._inherit_from(context, %s, _template_uri)" + % (node.parsed_attributes["file"]), + None, + ) + + def write_namespaces(self, namespaces): + """write the module-level namespace-generating callable.""" + self.printer.writelines( + "def _mako_get_namespace(context, name):", + "try:", + "return context.namespaces[(__name__, name)]", + "except KeyError:", + "_mako_generate_namespaces(context)", + "return context.namespaces[(__name__, name)]", + None, + None, + ) + self.printer.writeline("def _mako_generate_namespaces(context):") + + for node in namespaces.values(): + if "import" in node.attributes: + self.compiler.has_ns_imports = True + self.printer.start_source(node.lineno) + if len(node.nodes): + self.printer.writeline("def make_namespace():") + export = [] + identifiers = self.compiler.identifiers.branch(node) + self.in_def = True + + class NSDefVisitor(object): + def visitDefTag(s, node): + s.visitDefOrBase(node) + + def visitBlockTag(s, node): + s.visitDefOrBase(node) + + def visitDefOrBase(s, node): + if node.is_anonymous: + raise exceptions.CompileException( + "Can't put anonymous blocks inside " + "<%namespace>", + **node.exception_kwargs + ) + self.write_inline_def(node, identifiers, nested=False) + export.append(node.funcname) + + vis = NSDefVisitor() + for n in node.nodes: + n.accept_visitor(vis) + self.printer.writeline("return [%s]" % (",".join(export))) + self.printer.writeline(None) + self.in_def = False + callable_name = "make_namespace()" + else: + callable_name = "None" + + if "file" in node.parsed_attributes: + self.printer.writeline( + "ns = runtime.TemplateNamespace(%r," + " context._clean_inheritance_tokens()," + " templateuri=%s, callables=%s, " + " calling_uri=_template_uri)" + % ( + node.name, + node.parsed_attributes.get("file", "None"), + callable_name, + ) + ) + elif "module" in node.parsed_attributes: + self.printer.writeline( + "ns = runtime.ModuleNamespace(%r," + " context._clean_inheritance_tokens()," + " callables=%s, calling_uri=_template_uri," + " module=%s)" + % ( + node.name, + callable_name, + node.parsed_attributes.get("module", "None"), + ) + ) + else: + self.printer.writeline( + "ns = runtime.Namespace(%r," + " context._clean_inheritance_tokens()," + " callables=%s, calling_uri=_template_uri)" + % (node.name, callable_name) + ) + if eval(node.attributes.get("inheritable", "False")): + self.printer.writeline("context['self'].%s = ns" % (node.name)) + + self.printer.writeline( + "context.namespaces[(__name__, %s)] = ns" % repr(node.name) + ) + self.printer.write_blanks(1) + if not len(namespaces): + self.printer.writeline("pass") + self.printer.writeline(None) + + def write_variable_declares(self, identifiers, toplevel=False, limit=None): + """write variable declarations at the top of a function. + + the variable declarations are in the form of callable + definitions for defs and/or name lookup within the + function's context argument. the names declared are based + on the names that are referenced in the function body, + which don't otherwise have any explicit assignment + operation. names that are assigned within the body are + assumed to be locally-scoped variables and are not + separately declared. + + for def callable definitions, if the def is a top-level + callable then a 'stub' callable is generated which wraps + the current Context into a closure. if the def is not + top-level, it is fully rendered as a local closure. + + """ + + # collection of all defs available to us in this scope + comp_idents = dict([(c.funcname, c) for c in identifiers.defs]) + to_write = set() + + # write "context.get()" for all variables we are going to + # need that arent in the namespace yet + to_write = to_write.union(identifiers.undeclared) + + # write closure functions for closures that we define + # right here + to_write = to_write.union( + [c.funcname for c in identifiers.closuredefs.values()] + ) + + # remove identifiers that are declared in the argument + # signature of the callable + to_write = to_write.difference(identifiers.argument_declared) + + # remove identifiers that we are going to assign to. + # in this way we mimic Python's behavior, + # i.e. assignment to a variable within a block + # means that variable is now a "locally declared" var, + # which cannot be referenced beforehand. + to_write = to_write.difference(identifiers.locally_declared) + + if self.compiler.enable_loop: + has_loop = "loop" in to_write + to_write.discard("loop") + else: + has_loop = False + + # if a limiting set was sent, constraint to those items in that list + # (this is used for the caching decorator) + if limit is not None: + to_write = to_write.intersection(limit) + + if toplevel and getattr(self.compiler, "has_ns_imports", False): + self.printer.writeline("_import_ns = {}") + self.compiler.has_imports = True + for ident, ns in self.compiler.namespaces.items(): + if "import" in ns.attributes: + self.printer.writeline( + "_mako_get_namespace(context, %r)." + "_populate(_import_ns, %r)" + % ( + ident, + re.split(r"\s*,\s*", ns.attributes["import"]), + ) + ) + + if has_loop: + self.printer.writeline("loop = __M_loop = runtime.LoopStack()") + + for ident in to_write: + if ident in comp_idents: + comp = comp_idents[ident] + if comp.is_block: + if not comp.is_anonymous: + self.write_def_decl(comp, identifiers) + else: + self.write_inline_def(comp, identifiers, nested=True) + else: + if comp.is_root(): + self.write_def_decl(comp, identifiers) + else: + self.write_inline_def(comp, identifiers, nested=True) + + elif ident in self.compiler.namespaces: + self.printer.writeline( + "%s = _mako_get_namespace(context, %r)" % (ident, ident) + ) + else: + if getattr(self.compiler, "has_ns_imports", False): + if self.compiler.strict_undefined: + self.printer.writelines( + "%s = _import_ns.get(%r, UNDEFINED)" + % (ident, ident), + "if %s is UNDEFINED:" % ident, + "try:", + "%s = context[%r]" % (ident, ident), + "except KeyError:", + "raise NameError(\"'%s' is not defined\")" % ident, + None, + None, + ) + else: + self.printer.writeline( + "%s = _import_ns.get" + "(%r, context.get(%r, UNDEFINED))" + % (ident, ident, ident) + ) + else: + if self.compiler.strict_undefined: + self.printer.writelines( + "try:", + "%s = context[%r]" % (ident, ident), + "except KeyError:", + "raise NameError(\"'%s' is not defined\")" % ident, + None, + ) + else: + self.printer.writeline( + "%s = context.get(%r, UNDEFINED)" % (ident, ident) + ) + + self.printer.writeline("__M_writer = context.writer()") + + def write_def_decl(self, node, identifiers): + """write a locally-available callable referencing a top-level def""" + funcname = node.funcname + namedecls = node.get_argument_expressions() + nameargs = node.get_argument_expressions(as_call=True) + + if not self.in_def and ( + len(self.identifiers.locally_assigned) > 0 + or len(self.identifiers.argument_declared) > 0 + ): + nameargs.insert(0, "context._locals(__M_locals)") + else: + nameargs.insert(0, "context") + self.printer.writeline("def %s(%s):" % (funcname, ",".join(namedecls))) + self.printer.writeline( + "return render_%s(%s)" % (funcname, ",".join(nameargs)) + ) + self.printer.writeline(None) + + def write_inline_def(self, node, identifiers, nested): + """write a locally-available def callable inside an enclosing def.""" + + namedecls = node.get_argument_expressions() + + decorator = node.decorator + if decorator: + self.printer.writeline( + "@runtime._decorate_inline(context, %s)" % decorator + ) + self.printer.writeline( + "def %s(%s):" % (node.funcname, ",".join(namedecls)) + ) + filtered = len(node.filter_args.args) > 0 + buffered = eval(node.attributes.get("buffered", "False")) + cached = eval(node.attributes.get("cached", "False")) + self.printer.writelines( + # push new frame, assign current frame to __M_caller + "__M_caller = context.caller_stack._push_frame()", + "try:", + ) + if buffered or filtered or cached: + self.printer.writelines("context._push_buffer()") + + identifiers = identifiers.branch(node, nested=nested) + + self.write_variable_declares(identifiers) + + self.identifier_stack.append(identifiers) + for n in node.nodes: + n.accept_visitor(self) + self.identifier_stack.pop() + + self.write_def_finish(node, buffered, filtered, cached) + self.printer.writeline(None) + if cached: + self.write_cache_decorator( + node, + node.funcname, + namedecls, + False, + identifiers, + inline=True, + toplevel=False, + ) + + def write_def_finish( + self, node, buffered, filtered, cached, callstack=True + ): + """write the end section of a rendering function, either outermost or + inline. + + this takes into account if the rendering function was filtered, + buffered, etc. and closes the corresponding try: block if any, and + writes code to retrieve captured content, apply filters, send proper + return value.""" + + if not buffered and not cached and not filtered: + self.printer.writeline("return ''") + if callstack: + self.printer.writelines( + "finally:", "context.caller_stack._pop_frame()", None + ) + + if buffered or filtered or cached: + if buffered or cached: + # in a caching scenario, don't try to get a writer + # from the context after popping; assume the caching + # implemenation might be using a context with no + # extra buffers + self.printer.writelines( + "finally:", "__M_buf = context._pop_buffer()" + ) + else: + self.printer.writelines( + "finally:", + "__M_buf, __M_writer = context._pop_buffer_and_writer()", + ) + + if callstack: + self.printer.writeline("context.caller_stack._pop_frame()") + + s = "__M_buf.getvalue()" + if filtered: + s = self.create_filter_callable( + node.filter_args.args, s, False + ) + self.printer.writeline(None) + if buffered and not cached: + s = self.create_filter_callable( + self.compiler.buffer_filters, s, False + ) + if buffered or cached: + self.printer.writeline("return %s" % s) + else: + self.printer.writelines("__M_writer(%s)" % s, "return ''") + + def write_cache_decorator( + self, + node_or_pagetag, + name, + args, + buffered, + identifiers, + inline=False, + toplevel=False, + ): + """write a post-function decorator to replace a rendering + callable with a cached version of itself.""" + + self.printer.writeline("__M_%s = %s" % (name, name)) + cachekey = node_or_pagetag.parsed_attributes.get( + "cache_key", repr(name) + ) + + cache_args = {} + if self.compiler.pagetag is not None: + cache_args.update( + (pa[6:], self.compiler.pagetag.parsed_attributes[pa]) + for pa in self.compiler.pagetag.parsed_attributes + if pa.startswith("cache_") and pa != "cache_key" + ) + cache_args.update( + (pa[6:], node_or_pagetag.parsed_attributes[pa]) + for pa in node_or_pagetag.parsed_attributes + if pa.startswith("cache_") and pa != "cache_key" + ) + if "timeout" in cache_args: + cache_args["timeout"] = int(eval(cache_args["timeout"])) + + self.printer.writeline("def %s(%s):" % (name, ",".join(args))) + + # form "arg1, arg2, arg3=arg3, arg4=arg4", etc. + pass_args = [ + "%s=%s" % ((a.split("=")[0],) * 2) if "=" in a else a for a in args + ] + + self.write_variable_declares( + identifiers, + toplevel=toplevel, + limit=node_or_pagetag.undeclared_identifiers(), + ) + if buffered: + s = ( + "context.get('local')." + "cache._ctx_get_or_create(" + "%s, lambda:__M_%s(%s), context, %s__M_defname=%r)" + % ( + cachekey, + name, + ",".join(pass_args), + "".join( + ["%s=%s, " % (k, v) for k, v in cache_args.items()] + ), + name, + ) + ) + # apply buffer_filters + s = self.create_filter_callable( + self.compiler.buffer_filters, s, False + ) + self.printer.writelines("return " + s, None) + else: + self.printer.writelines( + "__M_writer(context.get('local')." + "cache._ctx_get_or_create(" + "%s, lambda:__M_%s(%s), context, %s__M_defname=%r))" + % ( + cachekey, + name, + ",".join(pass_args), + "".join( + ["%s=%s, " % (k, v) for k, v in cache_args.items()] + ), + name, + ), + "return ''", + None, + ) + + def create_filter_callable(self, args, target, is_expression): + """write a filter-applying expression based on the filters + present in the given filter names, adjusting for the global + 'default' filter aliases as needed.""" + + def locate_encode(name): + if re.match(r"decode\..+", name): + return "filters." + name + elif self.compiler.disable_unicode: + return filters.NON_UNICODE_ESCAPES.get(name, name) + else: + return filters.DEFAULT_ESCAPES.get(name, name) + + if "n" not in args: + if is_expression: + if self.compiler.pagetag: + args = self.compiler.pagetag.filter_args.args + args + if self.compiler.default_filters and "n" not in args: + args = self.compiler.default_filters + args + for e in args: + # if filter given as a function, get just the identifier portion + if e == "n": + continue + m = re.match(r"(.+?)(\(.*\))", e) + if m: + ident, fargs = m.group(1, 2) + f = locate_encode(ident) + e = f + fargs + else: + e = locate_encode(e) + assert e is not None + target = "%s(%s)" % (e, target) + return target + + def visitExpression(self, node): + self.printer.start_source(node.lineno) + if ( + len(node.escapes) + or ( + self.compiler.pagetag is not None + and len(self.compiler.pagetag.filter_args.args) + ) + or len(self.compiler.default_filters) + ): + + s = self.create_filter_callable( + node.escapes_code.args, "%s" % node.text, True + ) + self.printer.writeline("__M_writer(%s)" % s) + else: + self.printer.writeline("__M_writer(%s)" % node.text) + + def visitControlLine(self, node): + if node.isend: + self.printer.writeline(None) + if node.has_loop_context: + self.printer.writeline("finally:") + self.printer.writeline("loop = __M_loop._exit()") + self.printer.writeline(None) + else: + self.printer.start_source(node.lineno) + if self.compiler.enable_loop and node.keyword == "for": + text = mangle_mako_loop(node, self.printer) + else: + text = node.text + self.printer.writeline(text) + children = node.get_children() + # this covers the three situations where we want to insert a pass: + # 1) a ternary control line with no children, + # 2) a primary control line with nothing but its own ternary + # and end control lines, and + # 3) any control line with no content other than comments + if not children or ( + compat.all( + isinstance(c, (parsetree.Comment, parsetree.ControlLine)) + for c in children + ) + and compat.all( + (node.is_ternary(c.keyword) or c.isend) + for c in children + if isinstance(c, parsetree.ControlLine) + ) + ): + self.printer.writeline("pass") + + def visitText(self, node): + self.printer.start_source(node.lineno) + self.printer.writeline("__M_writer(%s)" % repr(node.content)) + + def visitTextTag(self, node): + filtered = len(node.filter_args.args) > 0 + if filtered: + self.printer.writelines( + "__M_writer = context._push_writer()", "try:" + ) + for n in node.nodes: + n.accept_visitor(self) + if filtered: + self.printer.writelines( + "finally:", + "__M_buf, __M_writer = context._pop_buffer_and_writer()", + "__M_writer(%s)" + % self.create_filter_callable( + node.filter_args.args, "__M_buf.getvalue()", False + ), + None, + ) + + def visitCode(self, node): + if not node.ismodule: + self.printer.write_indented_block( + node.text, starting_lineno=node.lineno + ) + + if not self.in_def and len(self.identifiers.locally_assigned) > 0: + # if we are the "template" def, fudge locally + # declared/modified variables into the "__M_locals" dictionary, + # which is used for def calls within the same template, + # to simulate "enclosing scope" + self.printer.writeline( + "__M_locals_builtin_stored = __M_locals_builtin()" + ) + self.printer.writeline( + "__M_locals.update(__M_dict_builtin([(__M_key," + " __M_locals_builtin_stored[__M_key]) for __M_key in" + " [%s] if __M_key in __M_locals_builtin_stored]))" + % ",".join([repr(x) for x in node.declared_identifiers()]) + ) + + def visitIncludeTag(self, node): + self.printer.start_source(node.lineno) + args = node.attributes.get("args") + if args: + self.printer.writeline( + "runtime._include_file(context, %s, _template_uri, %s)" + % (node.parsed_attributes["file"], args) + ) + else: + self.printer.writeline( + "runtime._include_file(context, %s, _template_uri)" + % (node.parsed_attributes["file"]) + ) + + def visitNamespaceTag(self, node): + pass + + def visitDefTag(self, node): + pass + + def visitBlockTag(self, node): + if node.is_anonymous: + self.printer.writeline("%s()" % node.funcname) + else: + nameargs = node.get_argument_expressions(as_call=True) + nameargs += ["**pageargs"] + self.printer.writeline( + "if 'parent' not in context._data or " + "not hasattr(context._data['parent'], '%s'):" % node.funcname + ) + self.printer.writeline( + "context['self'].%s(%s)" % (node.funcname, ",".join(nameargs)) + ) + self.printer.writeline("\n") + + def visitCallNamespaceTag(self, node): + # TODO: we can put namespace-specific checks here, such + # as ensure the given namespace will be imported, + # pre-import the namespace, etc. + self.visitCallTag(node) + + def visitCallTag(self, node): + self.printer.writeline("def ccall(caller):") + export = ["body"] + callable_identifiers = self.identifiers.branch(node, nested=True) + body_identifiers = callable_identifiers.branch(node, nested=False) + # we want the 'caller' passed to ccall to be used + # for the body() function, but for other non-body() + # <%def>s within <%call> we want the current caller + # off the call stack (if any) + body_identifiers.add_declared("caller") + + self.identifier_stack.append(body_identifiers) + + class DefVisitor(object): + def visitDefTag(s, node): + s.visitDefOrBase(node) + + def visitBlockTag(s, node): + s.visitDefOrBase(node) + + def visitDefOrBase(s, node): + self.write_inline_def(node, callable_identifiers, nested=False) + if not node.is_anonymous: + export.append(node.funcname) + # remove defs that are within the <%call> from the + # "closuredefs" defined in the body, so they dont render twice + if node.funcname in body_identifiers.closuredefs: + del body_identifiers.closuredefs[node.funcname] + + vis = DefVisitor() + for n in node.nodes: + n.accept_visitor(vis) + self.identifier_stack.pop() + + bodyargs = node.body_decl.get_argument_expressions() + self.printer.writeline("def body(%s):" % ",".join(bodyargs)) + + # TODO: figure out best way to specify + # buffering/nonbuffering (at call time would be better) + buffered = False + if buffered: + self.printer.writelines("context._push_buffer()", "try:") + self.write_variable_declares(body_identifiers) + self.identifier_stack.append(body_identifiers) + + for n in node.nodes: + n.accept_visitor(self) + self.identifier_stack.pop() + + self.write_def_finish(node, buffered, False, False, callstack=False) + self.printer.writelines(None, "return [%s]" % (",".join(export)), None) + + self.printer.writelines( + # push on caller for nested call + "context.caller_stack.nextcaller = " + "runtime.Namespace('caller', context, " + "callables=ccall(__M_caller))", + "try:", + ) + self.printer.start_source(node.lineno) + self.printer.writelines( + "__M_writer(%s)" + % self.create_filter_callable([], node.expression, True), + "finally:", + "context.caller_stack.nextcaller = None", + None, + ) + + +class _Identifiers(object): + + """tracks the status of identifier names as template code is rendered.""" + + def __init__(self, compiler, node=None, parent=None, nested=False): + if parent is not None: + # if we are the branch created in write_namespaces(), + # we don't share any context from the main body(). + if isinstance(node, parsetree.NamespaceTag): + self.declared = set() + self.topleveldefs = util.SetLikeDict() + else: + # things that have already been declared + # in an enclosing namespace (i.e. names we can just use) + self.declared = ( + set(parent.declared) + .union([c.name for c in parent.closuredefs.values()]) + .union(parent.locally_declared) + .union(parent.argument_declared) + ) + + # if these identifiers correspond to a "nested" + # scope, it means whatever the parent identifiers + # had as undeclared will have been declared by that parent, + # and therefore we have them in our scope. + if nested: + self.declared = self.declared.union(parent.undeclared) + + # top level defs that are available + self.topleveldefs = util.SetLikeDict(**parent.topleveldefs) + else: + self.declared = set() + self.topleveldefs = util.SetLikeDict() + + self.compiler = compiler + + # things within this level that are referenced before they + # are declared (e.g. assigned to) + self.undeclared = set() + + # things that are declared locally. some of these things + # could be in the "undeclared" list as well if they are + # referenced before declared + self.locally_declared = set() + + # assignments made in explicit python blocks. + # these will be propagated to + # the context of local def calls. + self.locally_assigned = set() + + # things that are declared in the argument + # signature of the def callable + self.argument_declared = set() + + # closure defs that are defined in this level + self.closuredefs = util.SetLikeDict() + + self.node = node + + if node is not None: + node.accept_visitor(self) + + illegal_names = self.compiler.reserved_names.intersection( + self.locally_declared + ) + if illegal_names: + raise exceptions.NameConflictError( + "Reserved words declared in template: %s" + % ", ".join(illegal_names) + ) + + def branch(self, node, **kwargs): + """create a new Identifiers for a new Node, with + this Identifiers as the parent.""" + + return _Identifiers(self.compiler, node, self, **kwargs) + + @property + def defs(self): + return set(self.topleveldefs.union(self.closuredefs).values()) + + def __repr__(self): + return ( + "Identifiers(declared=%r, locally_declared=%r, " + "undeclared=%r, topleveldefs=%r, closuredefs=%r, " + "argumentdeclared=%r)" + % ( + list(self.declared), + list(self.locally_declared), + list(self.undeclared), + [c.name for c in self.topleveldefs.values()], + [c.name for c in self.closuredefs.values()], + self.argument_declared, + ) + ) + + def check_declared(self, node): + """update the state of this Identifiers with the undeclared + and declared identifiers of the given node.""" + + for ident in node.undeclared_identifiers(): + if ident != "context" and ident not in self.declared.union( + self.locally_declared + ): + self.undeclared.add(ident) + for ident in node.declared_identifiers(): + self.locally_declared.add(ident) + + def add_declared(self, ident): + self.declared.add(ident) + if ident in self.undeclared: + self.undeclared.remove(ident) + + def visitExpression(self, node): + self.check_declared(node) + + def visitControlLine(self, node): + self.check_declared(node) + + def visitCode(self, node): + if not node.ismodule: + self.check_declared(node) + self.locally_assigned = self.locally_assigned.union( + node.declared_identifiers() + ) + + def visitNamespaceTag(self, node): + # only traverse into the sub-elements of a + # <%namespace> tag if we are the branch created in + # write_namespaces() + if self.node is node: + for n in node.nodes: + n.accept_visitor(self) + + def _check_name_exists(self, collection, node): + existing = collection.get(node.funcname) + collection[node.funcname] = node + if ( + existing is not None + and existing is not node + and (node.is_block or existing.is_block) + ): + raise exceptions.CompileException( + "%%def or %%block named '%s' already " + "exists in this template." % node.funcname, + **node.exception_kwargs + ) + + def visitDefTag(self, node): + if node.is_root() and not node.is_anonymous: + self._check_name_exists(self.topleveldefs, node) + elif node is not self.node: + self._check_name_exists(self.closuredefs, node) + + for ident in node.undeclared_identifiers(): + if ident != "context" and ident not in self.declared.union( + self.locally_declared + ): + self.undeclared.add(ident) + + # visit defs only one level deep + if node is self.node: + for ident in node.declared_identifiers(): + self.argument_declared.add(ident) + + for n in node.nodes: + n.accept_visitor(self) + + def visitBlockTag(self, node): + if node is not self.node and not node.is_anonymous: + + if isinstance(self.node, parsetree.DefTag): + raise exceptions.CompileException( + "Named block '%s' not allowed inside of def '%s'" + % (node.name, self.node.name), + **node.exception_kwargs + ) + elif isinstance( + self.node, (parsetree.CallTag, parsetree.CallNamespaceTag) + ): + raise exceptions.CompileException( + "Named block '%s' not allowed inside of <%%call> tag" + % (node.name,), + **node.exception_kwargs + ) + + for ident in node.undeclared_identifiers(): + if ident != "context" and ident not in self.declared.union( + self.locally_declared + ): + self.undeclared.add(ident) + + if not node.is_anonymous: + self._check_name_exists(self.topleveldefs, node) + self.undeclared.add(node.funcname) + elif node is not self.node: + self._check_name_exists(self.closuredefs, node) + for ident in node.declared_identifiers(): + self.argument_declared.add(ident) + for n in node.nodes: + n.accept_visitor(self) + + def visitTextTag(self, node): + for ident in node.undeclared_identifiers(): + if ident != "context" and ident not in self.declared.union( + self.locally_declared + ): + self.undeclared.add(ident) + + def visitIncludeTag(self, node): + self.check_declared(node) + + def visitPageTag(self, node): + for ident in node.declared_identifiers(): + self.argument_declared.add(ident) + self.check_declared(node) + + def visitCallNamespaceTag(self, node): + self.visitCallTag(node) + + def visitCallTag(self, node): + if node is self.node: + for ident in node.undeclared_identifiers(): + if ident != "context" and ident not in self.declared.union( + self.locally_declared + ): + self.undeclared.add(ident) + for ident in node.declared_identifiers(): + self.argument_declared.add(ident) + for n in node.nodes: + n.accept_visitor(self) + else: + for ident in node.undeclared_identifiers(): + if ident != "context" and ident not in self.declared.union( + self.locally_declared + ): + self.undeclared.add(ident) + + +_FOR_LOOP = re.compile( + r"^for\s+((?:\(?)\s*[A-Za-z_][A-Za-z_0-9]*" + r"(?:\s*,\s*(?:[A-Za-z_][A-Za-z0-9_]*),??)*\s*(?:\)?))\s+in\s+(.*):" +) + + +def mangle_mako_loop(node, printer): + """converts a for loop into a context manager wrapped around a for loop + when access to the `loop` variable has been detected in the for loop body + """ + loop_variable = LoopVariable() + node.accept_visitor(loop_variable) + if loop_variable.detected: + node.nodes[-1].has_loop_context = True + match = _FOR_LOOP.match(node.text) + if match: + printer.writelines( + "loop = __M_loop._enter(%s)" % match.group(2), + "try:" + # 'with __M_loop(%s) as loop:' % match.group(2) + ) + text = "for %s in loop:" % match.group(1) + else: + raise SyntaxError("Couldn't apply loop context: %s" % node.text) + else: + text = node.text + return text + + +class LoopVariable(object): + + """A node visitor which looks for the name 'loop' within undeclared + identifiers.""" + + def __init__(self): + self.detected = False + + def _loop_reference_detected(self, node): + if "loop" in node.undeclared_identifiers(): + self.detected = True + else: + for n in node.get_children(): + n.accept_visitor(self) + + def visitControlLine(self, node): + self._loop_reference_detected(node) + + def visitCode(self, node): + self._loop_reference_detected(node) + + def visitExpression(self, node): + self._loop_reference_detected(node) diff --git a/third_party/python/Mako/mako/compat.py b/third_party/python/Mako/mako/compat.py new file mode 100644 index 0000000000..9aac98cb5b --- /dev/null +++ b/third_party/python/Mako/mako/compat.py @@ -0,0 +1,166 @@ +# mako/compat.py +# Copyright 2006-2020 the Mako authors and contributors <see AUTHORS file> +# +# This module is part of Mako and is released under +# the MIT License: http://www.opensource.org/licenses/mit-license.php + +import collections +import inspect +import sys + +py3k = sys.version_info >= (3, 0) +py2k = sys.version_info < (3,) +py27 = sys.version_info >= (2, 7) +jython = sys.platform.startswith("java") +win32 = sys.platform.startswith("win") +pypy = hasattr(sys, "pypy_version_info") + +ArgSpec = collections.namedtuple( + "ArgSpec", ["args", "varargs", "keywords", "defaults"] +) + + +def inspect_getargspec(func): + """getargspec based on fully vendored getfullargspec from Python 3.3.""" + + if inspect.ismethod(func): + func = func.__func__ + if not inspect.isfunction(func): + raise TypeError("{!r} is not a Python function".format(func)) + + co = func.__code__ + if not inspect.iscode(co): + raise TypeError("{!r} is not a code object".format(co)) + + nargs = co.co_argcount + names = co.co_varnames + nkwargs = co.co_kwonlyargcount if py3k else 0 + args = list(names[:nargs]) + + nargs += nkwargs + varargs = None + if co.co_flags & inspect.CO_VARARGS: + varargs = co.co_varnames[nargs] + nargs = nargs + 1 + varkw = None + if co.co_flags & inspect.CO_VARKEYWORDS: + varkw = co.co_varnames[nargs] + + return ArgSpec(args, varargs, varkw, func.__defaults__) + + +if py3k: + from io import StringIO + import builtins as compat_builtins + from urllib.parse import quote_plus, unquote_plus + from html.entities import codepoint2name, name2codepoint + + string_types = (str,) + binary_type = bytes + text_type = str + + from io import BytesIO as byte_buffer + + def u(s): + return s + + def b(s): + return s.encode("latin-1") + + def octal(lit): + return eval("0o" + lit) + + +else: + import __builtin__ as compat_builtins # noqa + + try: + from cStringIO import StringIO + except: + from StringIO import StringIO + + byte_buffer = StringIO + + from urllib import quote_plus, unquote_plus # noqa + from htmlentitydefs import codepoint2name, name2codepoint # noqa + + string_types = (basestring,) # noqa + binary_type = str + text_type = unicode # noqa + + def u(s): + return unicode(s, "utf-8") # noqa + + def b(s): + return s + + def octal(lit): + return eval("0" + lit) + + +if py3k: + from importlib import machinery + + def load_module(module_id, path): + return machinery.SourceFileLoader(module_id, path).load_module() + + +else: + import imp + + def load_module(module_id, path): + fp = open(path, "rb") + try: + return imp.load_source(module_id, path, fp) + finally: + fp.close() + + +if py3k: + + def reraise(tp, value, tb=None, cause=None): + if cause is not None: + value.__cause__ = cause + if value.__traceback__ is not tb: + raise value.with_traceback(tb) + raise value + + +else: + exec( + "def reraise(tp, value, tb=None, cause=None):\n" + " raise tp, value, tb\n" + ) + + +def exception_as(): + return sys.exc_info()[1] + + +all = all # noqa + + +def exception_name(exc): + return exc.__class__.__name__ + + +################################################ +# cross-compatible metaclass implementation +# Copyright (c) 2010-2012 Benjamin Peterson +def with_metaclass(meta, base=object): + """Create a base class with a metaclass.""" + return meta("%sBase" % meta.__name__, (base,), {}) + + +################################################ + + +def arg_stringname(func_arg): + """Gets the string name of a kwarg or vararg + In Python3.4 a function's args are + of _ast.arg type not _ast.name + """ + if hasattr(func_arg, "arg"): + return func_arg.arg + else: + return str(func_arg) diff --git a/third_party/python/Mako/mako/exceptions.py b/third_party/python/Mako/mako/exceptions.py new file mode 100644 index 0000000000..ea7b20dbdd --- /dev/null +++ b/third_party/python/Mako/mako/exceptions.py @@ -0,0 +1,430 @@ +# mako/exceptions.py +# Copyright 2006-2020 the Mako authors and contributors <see AUTHORS file> +# +# This module is part of Mako and is released under +# the MIT License: http://www.opensource.org/licenses/mit-license.php + +"""exception classes""" + +import sys +import traceback + +from mako import compat +from mako import util + + +class MakoException(Exception): + pass + + +class RuntimeException(MakoException): + pass + + +def _format_filepos(lineno, pos, filename): + if filename is None: + return " at line: %d char: %d" % (lineno, pos) + else: + return " in file '%s' at line: %d char: %d" % (filename, lineno, pos) + + +class CompileException(MakoException): + def __init__(self, message, source, lineno, pos, filename): + MakoException.__init__( + self, message + _format_filepos(lineno, pos, filename) + ) + self.lineno = lineno + self.pos = pos + self.filename = filename + self.source = source + + +class SyntaxException(MakoException): + def __init__(self, message, source, lineno, pos, filename): + MakoException.__init__( + self, message + _format_filepos(lineno, pos, filename) + ) + self.lineno = lineno + self.pos = pos + self.filename = filename + self.source = source + + +class UnsupportedError(MakoException): + + """raised when a retired feature is used.""" + + +class NameConflictError(MakoException): + + """raised when a reserved word is used inappropriately""" + + +class TemplateLookupException(MakoException): + pass + + +class TopLevelLookupException(TemplateLookupException): + pass + + +class RichTraceback(object): + + """Pull the current exception from the ``sys`` traceback and extracts + Mako-specific template information. + + See the usage examples in :ref:`handling_exceptions`. + + """ + + def __init__(self, error=None, traceback=None): + self.source, self.lineno = "", 0 + + if error is None or traceback is None: + t, value, tback = sys.exc_info() + + if error is None: + error = value or t + + if traceback is None: + traceback = tback + + self.error = error + self.records = self._init(traceback) + + if isinstance(self.error, (CompileException, SyntaxException)): + self.source = self.error.source + self.lineno = self.error.lineno + self._has_source = True + + self._init_message() + + @property + def errorname(self): + return compat.exception_name(self.error) + + def _init_message(self): + """Find a unicode representation of self.error""" + try: + self.message = compat.text_type(self.error) + except UnicodeError: + try: + self.message = str(self.error) + except UnicodeEncodeError: + # Fallback to args as neither unicode nor + # str(Exception(u'\xe6')) work in Python < 2.6 + self.message = self.error.args[0] + if not isinstance(self.message, compat.text_type): + self.message = compat.text_type(self.message, "ascii", "replace") + + def _get_reformatted_records(self, records): + for rec in records: + if rec[6] is not None: + yield (rec[4], rec[5], rec[2], rec[6]) + else: + yield tuple(rec[0:4]) + + @property + def traceback(self): + """Return a list of 4-tuple traceback records (i.e. normal python + format) with template-corresponding lines remapped to the originating + template. + + """ + return list(self._get_reformatted_records(self.records)) + + @property + def reverse_records(self): + return reversed(self.records) + + @property + def reverse_traceback(self): + """Return the same data as traceback, except in reverse order. + """ + + return list(self._get_reformatted_records(self.reverse_records)) + + def _init(self, trcback): + """format a traceback from sys.exc_info() into 7-item tuples, + containing the regular four traceback tuple items, plus the original + template filename, the line number adjusted relative to the template + source, and code line from that line number of the template.""" + + import mako.template + + mods = {} + rawrecords = traceback.extract_tb(trcback) + new_trcback = [] + for filename, lineno, function, line in rawrecords: + if not line: + line = "" + try: + (line_map, template_lines, template_filename) = mods[filename] + except KeyError: + try: + info = mako.template._get_module_info(filename) + module_source = info.code + template_source = info.source + template_filename = ( + info.template_filename or info.template_uri or filename + ) + except KeyError: + # A normal .py file (not a Template) + if not compat.py3k: + try: + fp = open(filename, "rb") + encoding = util.parse_encoding(fp) + fp.close() + except IOError: + encoding = None + if encoding: + line = line.decode(encoding) + else: + line = line.decode("ascii", "replace") + new_trcback.append( + ( + filename, + lineno, + function, + line, + None, + None, + None, + None, + ) + ) + continue + + template_ln = 1 + + mtm = mako.template.ModuleInfo + source_map = mtm.get_module_source_metadata( + module_source, full_line_map=True + ) + line_map = source_map["full_line_map"] + + template_lines = [ + line_ for line_ in template_source.split("\n") + ] + mods[filename] = (line_map, template_lines, template_filename) + + template_ln = line_map[lineno - 1] + + if template_ln <= len(template_lines): + template_line = template_lines[template_ln - 1] + else: + template_line = None + new_trcback.append( + ( + filename, + lineno, + function, + line, + template_filename, + template_ln, + template_line, + template_source, + ) + ) + if not self.source: + for l in range(len(new_trcback) - 1, 0, -1): + if new_trcback[l][5]: + self.source = new_trcback[l][7] + self.lineno = new_trcback[l][5] + break + else: + if new_trcback: + try: + # A normal .py file (not a Template) + fp = open(new_trcback[-1][0], "rb") + encoding = util.parse_encoding(fp) + if compat.py3k and not encoding: + encoding = "utf-8" + fp.seek(0) + self.source = fp.read() + fp.close() + if encoding: + self.source = self.source.decode(encoding) + except IOError: + self.source = "" + self.lineno = new_trcback[-1][1] + return new_trcback + + +def text_error_template(lookup=None): + """Provides a template that renders a stack trace in a similar format to + the Python interpreter, substituting source template filenames, line + numbers and code for that of the originating source template, as + applicable. + + """ + import mako.template + + return mako.template.Template( + r""" +<%page args="error=None, traceback=None"/> +<%! + from mako.exceptions import RichTraceback +%>\ +<% + tback = RichTraceback(error=error, traceback=traceback) +%>\ +Traceback (most recent call last): +% for (filename, lineno, function, line) in tback.traceback: + File "${filename}", line ${lineno}, in ${function or '?'} + ${line | trim} +% endfor +${tback.errorname}: ${tback.message} +""" + ) + + +def _install_pygments(): + global syntax_highlight, pygments_html_formatter + from mako.ext.pygmentplugin import syntax_highlight # noqa + from mako.ext.pygmentplugin import pygments_html_formatter # noqa + + +def _install_fallback(): + global syntax_highlight, pygments_html_formatter + from mako.filters import html_escape + + pygments_html_formatter = None + + def syntax_highlight(filename="", language=None): + return html_escape + + +def _install_highlighting(): + try: + _install_pygments() + except ImportError: + _install_fallback() + + +_install_highlighting() + + +def html_error_template(): + """Provides a template that renders a stack trace in an HTML format, + providing an excerpt of code as well as substituting source template + filenames, line numbers and code for that of the originating source + template, as applicable. + + The template's default ``encoding_errors`` value is + ``'htmlentityreplace'``. The template has two options. With the + ``full`` option disabled, only a section of an HTML document is + returned. With the ``css`` option disabled, the default stylesheet + won't be included. + + """ + import mako.template + + return mako.template.Template( + r""" +<%! + from mako.exceptions import RichTraceback, syntax_highlight,\ + pygments_html_formatter +%> +<%page args="full=True, css=True, error=None, traceback=None"/> +% if full: +<html> +<head> + <title>Mako Runtime Error</title> +% endif +% if css: + <style> + body { font-family:verdana; margin:10px 30px 10px 30px;} + .stacktrace { margin:5px 5px 5px 5px; } + .highlight { padding:0px 10px 0px 10px; background-color:#9F9FDF; } + .nonhighlight { padding:0px; background-color:#DFDFDF; } + .sample { padding:10px; margin:10px 10px 10px 10px; + font-family:monospace; } + .sampleline { padding:0px 10px 0px 10px; } + .sourceline { margin:5px 5px 10px 5px; font-family:monospace;} + .location { font-size:80%; } + .highlight { white-space:pre; } + .sampleline { white-space:pre; } + + % if pygments_html_formatter: + ${pygments_html_formatter.get_style_defs()} + .linenos { min-width: 2.5em; text-align: right; } + pre { margin: 0; } + .syntax-highlighted { padding: 0 10px; } + .syntax-highlightedtable { border-spacing: 1px; } + .nonhighlight { border-top: 1px solid #DFDFDF; + border-bottom: 1px solid #DFDFDF; } + .stacktrace .nonhighlight { margin: 5px 15px 10px; } + .sourceline { margin: 0 0; font-family:monospace; } + .code { background-color: #F8F8F8; width: 100%; } + .error .code { background-color: #FFBDBD; } + .error .syntax-highlighted { background-color: #FFBDBD; } + % endif + + </style> +% endif +% if full: +</head> +<body> +% endif + +<h2>Error !</h2> +<% + tback = RichTraceback(error=error, traceback=traceback) + src = tback.source + line = tback.lineno + if src: + lines = src.split('\n') + else: + lines = None +%> +<h3>${tback.errorname}: ${tback.message|h}</h3> + +% if lines: + <div class="sample"> + <div class="nonhighlight"> +% for index in range(max(0, line-4),min(len(lines), line+5)): + <% + if pygments_html_formatter: + pygments_html_formatter.linenostart = index + 1 + %> + % if index + 1 == line: + <% + if pygments_html_formatter: + old_cssclass = pygments_html_formatter.cssclass + pygments_html_formatter.cssclass = 'error ' + old_cssclass + %> + ${lines[index] | syntax_highlight(language='mako')} + <% + if pygments_html_formatter: + pygments_html_formatter.cssclass = old_cssclass + %> + % else: + ${lines[index] | syntax_highlight(language='mako')} + % endif +% endfor + </div> + </div> +% endif + +<div class="stacktrace"> +% for (filename, lineno, function, line) in tback.reverse_traceback: + <div class="location">${filename}, line ${lineno}:</div> + <div class="nonhighlight"> + <% + if pygments_html_formatter: + pygments_html_formatter.linenostart = lineno + %> + <div class="sourceline">${line | syntax_highlight(filename)}</div> + </div> +% endfor +</div> + +% if full: +</body> +</html> +% endif +""", + output_encoding=sys.getdefaultencoding(), + encoding_errors="htmlentityreplace", + ) diff --git a/third_party/python/Mako/mako/ext/__init__.py b/third_party/python/Mako/mako/ext/__init__.py new file mode 100644 index 0000000000..e69de29bb2 --- /dev/null +++ b/third_party/python/Mako/mako/ext/__init__.py diff --git a/third_party/python/Mako/mako/ext/autohandler.py b/third_party/python/Mako/mako/ext/autohandler.py new file mode 100644 index 0000000000..8b1324ef00 --- /dev/null +++ b/third_party/python/Mako/mako/ext/autohandler.py @@ -0,0 +1,70 @@ +# ext/autohandler.py +# Copyright 2006-2020 the Mako authors and contributors <see AUTHORS file> +# +# This module is part of Mako and is released under +# the MIT License: http://www.opensource.org/licenses/mit-license.php + +"""adds autohandler functionality to Mako templates. + +requires that the TemplateLookup class is used with templates. + +usage:: + + <%! + from mako.ext.autohandler import autohandler + %> + <%inherit file="${autohandler(template, context)}"/> + + +or with custom autohandler filename:: + + <%! + from mako.ext.autohandler import autohandler + %> + <%inherit file="${autohandler(template, context, name='somefilename')}"/> + +""" + +import os +import posixpath +import re + + +def autohandler(template, context, name="autohandler"): + lookup = context.lookup + _template_uri = template.module._template_uri + if not lookup.filesystem_checks: + try: + return lookup._uri_cache[(autohandler, _template_uri, name)] + except KeyError: + pass + + tokens = re.findall(r"([^/]+)", posixpath.dirname(_template_uri)) + [name] + while len(tokens): + path = "/" + "/".join(tokens) + if path != _template_uri and _file_exists(lookup, path): + if not lookup.filesystem_checks: + return lookup._uri_cache.setdefault( + (autohandler, _template_uri, name), path + ) + else: + return path + if len(tokens) == 1: + break + tokens[-2:] = [name] + + if not lookup.filesystem_checks: + return lookup._uri_cache.setdefault( + (autohandler, _template_uri, name), None + ) + else: + return None + + +def _file_exists(lookup, path): + psub = re.sub(r"^/", "", path) + for d in lookup.directories: + if os.path.exists(d + "/" + psub): + return True + else: + return False diff --git a/third_party/python/Mako/mako/ext/babelplugin.py b/third_party/python/Mako/mako/ext/babelplugin.py new file mode 100644 index 0000000000..76bbc5b03f --- /dev/null +++ b/third_party/python/Mako/mako/ext/babelplugin.py @@ -0,0 +1,58 @@ +# ext/babelplugin.py +# Copyright 2006-2020 the Mako authors and contributors <see AUTHORS file> +# +# This module is part of Mako and is released under +# the MIT License: http://www.opensource.org/licenses/mit-license.php + +"""gettext message extraction via Babel: http://babel.edgewall.org/""" +from babel.messages.extract import extract_python + +from mako.ext.extract import MessageExtractor + + +class BabelMakoExtractor(MessageExtractor): + def __init__(self, keywords, comment_tags, options): + self.keywords = keywords + self.options = options + self.config = { + "comment-tags": u" ".join(comment_tags), + "encoding": options.get( + "input_encoding", options.get("encoding", None) + ), + } + super(BabelMakoExtractor, self).__init__() + + def __call__(self, fileobj): + return self.process_file(fileobj) + + def process_python(self, code, code_lineno, translator_strings): + comment_tags = self.config["comment-tags"] + for ( + lineno, + funcname, + messages, + python_translator_comments, + ) in extract_python(code, self.keywords, comment_tags, self.options): + yield ( + code_lineno + (lineno - 1), + funcname, + messages, + translator_strings + python_translator_comments, + ) + + +def extract(fileobj, keywords, comment_tags, options): + """Extract messages from Mako templates. + + :param fileobj: the file-like object the messages should be extracted from + :param keywords: a list of keywords (i.e. function names) that should be + recognized as translation functions + :param comment_tags: a list of translator tags to search for and include + in the results + :param options: a dictionary of additional options (optional) + :return: an iterator over ``(lineno, funcname, message, comments)`` tuples + :rtype: ``iterator`` + """ + extractor = BabelMakoExtractor(keywords, comment_tags, options) + for message in extractor(fileobj): + yield message diff --git a/third_party/python/Mako/mako/ext/beaker_cache.py b/third_party/python/Mako/mako/ext/beaker_cache.py new file mode 100644 index 0000000000..f65ce43ae8 --- /dev/null +++ b/third_party/python/Mako/mako/ext/beaker_cache.py @@ -0,0 +1,82 @@ +# ext/beaker_cache.py +# Copyright 2006-2020 the Mako authors and contributors <see AUTHORS file> +# +# This module is part of Mako and is released under +# the MIT License: http://www.opensource.org/licenses/mit-license.php + +"""Provide a :class:`.CacheImpl` for the Beaker caching system.""" + +from mako import exceptions +from mako.cache import CacheImpl + +try: + from beaker import cache as beaker_cache +except: + has_beaker = False +else: + has_beaker = True + +_beaker_cache = None + + +class BeakerCacheImpl(CacheImpl): + + """A :class:`.CacheImpl` provided for the Beaker caching system. + + This plugin is used by default, based on the default + value of ``'beaker'`` for the ``cache_impl`` parameter of the + :class:`.Template` or :class:`.TemplateLookup` classes. + + """ + + def __init__(self, cache): + if not has_beaker: + raise exceptions.RuntimeException( + "Can't initialize Beaker plugin; Beaker is not installed." + ) + global _beaker_cache + if _beaker_cache is None: + if "manager" in cache.template.cache_args: + _beaker_cache = cache.template.cache_args["manager"] + else: + _beaker_cache = beaker_cache.CacheManager() + super(BeakerCacheImpl, self).__init__(cache) + + def _get_cache(self, **kw): + expiretime = kw.pop("timeout", None) + if "dir" in kw: + kw["data_dir"] = kw.pop("dir") + elif self.cache.template.module_directory: + kw["data_dir"] = self.cache.template.module_directory + + if "manager" in kw: + kw.pop("manager") + + if kw.get("type") == "memcached": + kw["type"] = "ext:memcached" + + if "region" in kw: + region = kw.pop("region") + cache = _beaker_cache.get_cache_region(self.cache.id, region, **kw) + else: + cache = _beaker_cache.get_cache(self.cache.id, **kw) + cache_args = {"starttime": self.cache.starttime} + if expiretime: + cache_args["expiretime"] = expiretime + return cache, cache_args + + def get_or_create(self, key, creation_function, **kw): + cache, kw = self._get_cache(**kw) + return cache.get(key, createfunc=creation_function, **kw) + + def put(self, key, value, **kw): + cache, kw = self._get_cache(**kw) + cache.put(key, value, **kw) + + def get(self, key, **kw): + cache, kw = self._get_cache(**kw) + return cache.get(key, **kw) + + def invalidate(self, key, **kw): + cache, kw = self._get_cache(**kw) + cache.remove_value(key, **kw) diff --git a/third_party/python/Mako/mako/ext/extract.py b/third_party/python/Mako/mako/ext/extract.py new file mode 100644 index 0000000000..ad2348a523 --- /dev/null +++ b/third_party/python/Mako/mako/ext/extract.py @@ -0,0 +1,125 @@ +# ext/extract.py +# Copyright 2006-2020 the Mako authors and contributors <see AUTHORS file> +# +# This module is part of Mako and is released under +# the MIT License: http://www.opensource.org/licenses/mit-license.php + +import re + +from mako import compat +from mako import lexer +from mako import parsetree + + +class MessageExtractor(object): + def process_file(self, fileobj): + template_node = lexer.Lexer( + fileobj.read(), input_encoding=self.config["encoding"] + ).parse() + for extracted in self.extract_nodes(template_node.get_children()): + yield extracted + + def extract_nodes(self, nodes): + translator_comments = [] + in_translator_comments = False + input_encoding = self.config["encoding"] or "ascii" + comment_tags = list( + filter(None, re.split(r"\s+", self.config["comment-tags"])) + ) + + for node in nodes: + child_nodes = None + if ( + in_translator_comments + and isinstance(node, parsetree.Text) + and not node.content.strip() + ): + # Ignore whitespace within translator comments + continue + + if isinstance(node, parsetree.Comment): + value = node.text.strip() + if in_translator_comments: + translator_comments.extend( + self._split_comment(node.lineno, value) + ) + continue + for comment_tag in comment_tags: + if value.startswith(comment_tag): + in_translator_comments = True + translator_comments.extend( + self._split_comment(node.lineno, value) + ) + continue + + if isinstance(node, parsetree.DefTag): + code = node.function_decl.code + child_nodes = node.nodes + elif isinstance(node, parsetree.BlockTag): + code = node.body_decl.code + child_nodes = node.nodes + elif isinstance(node, parsetree.CallTag): + code = node.code.code + child_nodes = node.nodes + elif isinstance(node, parsetree.PageTag): + code = node.body_decl.code + elif isinstance(node, parsetree.CallNamespaceTag): + code = node.expression + child_nodes = node.nodes + elif isinstance(node, parsetree.ControlLine): + if node.isend: + in_translator_comments = False + continue + code = node.text + elif isinstance(node, parsetree.Code): + in_translator_comments = False + code = node.code.code + elif isinstance(node, parsetree.Expression): + code = node.code.code + else: + continue + + # Comments don't apply unless they immediately precede the message + if ( + translator_comments + and translator_comments[-1][0] < node.lineno - 1 + ): + translator_comments = [] + + translator_strings = [ + comment[1] for comment in translator_comments + ] + + if isinstance(code, compat.text_type): + code = code.encode(input_encoding, "backslashreplace") + + used_translator_comments = False + # We add extra newline to work around a pybabel bug + # (see python-babel/babel#274, parse_encoding dies if the first + # input string of the input is non-ascii) + # Also, because we added it, we have to subtract one from + # node.lineno + code = compat.byte_buffer(compat.b("\n") + code) + + for message in self.process_python( + code, node.lineno - 1, translator_strings + ): + yield message + used_translator_comments = True + + if used_translator_comments: + translator_comments = [] + in_translator_comments = False + + if child_nodes: + for extracted in self.extract_nodes(child_nodes): + yield extracted + + @staticmethod + def _split_comment(lineno, comment): + """Return the multiline comment at lineno split into a list of + comment line numbers and the accompanying comment line""" + return [ + (lineno + index, line) + for index, line in enumerate(comment.splitlines()) + ] diff --git a/third_party/python/Mako/mako/ext/linguaplugin.py b/third_party/python/Mako/mako/ext/linguaplugin.py new file mode 100644 index 0000000000..0f6d165a2f --- /dev/null +++ b/third_party/python/Mako/mako/ext/linguaplugin.py @@ -0,0 +1,57 @@ +# ext/linguaplugin.py +# Copyright 2006-2020 the Mako authors and contributors <see AUTHORS file> +# +# This module is part of Mako and is released under +# the MIT License: http://www.opensource.org/licenses/mit-license.php + +import io + +from lingua.extractors import Extractor +from lingua.extractors import get_extractor +from lingua.extractors import Message + +from mako import compat +from mako.ext.extract import MessageExtractor + + +class LinguaMakoExtractor(Extractor, MessageExtractor): + + """Mako templates""" + + extensions = [".mako"] + default_config = {"encoding": "utf-8", "comment-tags": ""} + + def __call__(self, filename, options, fileobj=None): + self.options = options + self.filename = filename + self.python_extractor = get_extractor("x.py") + if fileobj is None: + fileobj = open(filename, "rb") + return self.process_file(fileobj) + + def process_python(self, code, code_lineno, translator_strings): + source = code.getvalue().strip() + if source.endswith(compat.b(":")): + if source in ( + compat.b("try:"), + compat.b("else:"), + ) or source.startswith(compat.b("except")): + source = compat.b("") # Ignore try/except and else + elif source.startswith(compat.b("elif")): + source = source[2:] # Replace "elif" with "if" + source += compat.b("pass") + code = io.BytesIO(source) + for msg in self.python_extractor( + self.filename, self.options, code, code_lineno - 1 + ): + if translator_strings: + msg = Message( + msg.msgctxt, + msg.msgid, + msg.msgid_plural, + msg.flags, + compat.u(" ").join(translator_strings + [msg.comment]), + msg.tcomment, + msg.location, + ) + yield msg diff --git a/third_party/python/Mako/mako/ext/preprocessors.py b/third_party/python/Mako/mako/ext/preprocessors.py new file mode 100644 index 0000000000..9cc0621482 --- /dev/null +++ b/third_party/python/Mako/mako/ext/preprocessors.py @@ -0,0 +1,20 @@ +# ext/preprocessors.py +# Copyright 2006-2020 the Mako authors and contributors <see AUTHORS file> +# +# This module is part of Mako and is released under +# the MIT License: http://www.opensource.org/licenses/mit-license.php + +"""preprocessing functions, used with the 'preprocessor' +argument on Template, TemplateLookup""" + +import re + + +def convert_comments(text): + """preprocess old style comments. + + example: + + from mako.ext.preprocessors import convert_comments + t = Template(..., preprocessor=convert_comments)""" + return re.sub(r"(?<=\n)\s*#[^#]", "##", text) diff --git a/third_party/python/Mako/mako/ext/pygmentplugin.py b/third_party/python/Mako/mako/ext/pygmentplugin.py new file mode 100644 index 0000000000..943a67a49c --- /dev/null +++ b/third_party/python/Mako/mako/ext/pygmentplugin.py @@ -0,0 +1,157 @@ +# ext/pygmentplugin.py +# Copyright 2006-2020 the Mako authors and contributors <see AUTHORS file> +# +# This module is part of Mako and is released under +# the MIT License: http://www.opensource.org/licenses/mit-license.php + +from pygments import highlight +from pygments.formatters.html import HtmlFormatter +from pygments.lexer import bygroups +from pygments.lexer import DelegatingLexer +from pygments.lexer import include +from pygments.lexer import RegexLexer +from pygments.lexer import using +from pygments.lexers.agile import Python3Lexer +from pygments.lexers.agile import PythonLexer +from pygments.lexers.web import CssLexer +from pygments.lexers.web import HtmlLexer +from pygments.lexers.web import JavascriptLexer +from pygments.lexers.web import XmlLexer +from pygments.token import Comment +from pygments.token import Keyword +from pygments.token import Name +from pygments.token import Operator +from pygments.token import Other +from pygments.token import String +from pygments.token import Text + +from mako import compat + + +class MakoLexer(RegexLexer): + name = "Mako" + aliases = ["mako"] + filenames = ["*.mao"] + + tokens = { + "root": [ + ( + r"(\s*)(\%)(\s*end(?:\w+))(\n|\Z)", + bygroups(Text, Comment.Preproc, Keyword, Other), + ), + ( + r"(\s*)(\%(?!%))([^\n]*)(\n|\Z)", + bygroups(Text, Comment.Preproc, using(PythonLexer), Other), + ), + ( + r"(\s*)(##[^\n]*)(\n|\Z)", + bygroups(Text, Comment.Preproc, Other), + ), + (r"""(?s)<%doc>.*?</%doc>""", Comment.Preproc), + ( + r"(<%)([\w\.\:]+)", + bygroups(Comment.Preproc, Name.Builtin), + "tag", + ), + ( + r"(</%)([\w\.\:]+)(>)", + bygroups(Comment.Preproc, Name.Builtin, Comment.Preproc), + ), + (r"<%(?=([\w\.\:]+))", Comment.Preproc, "ondeftags"), + ( + r"(?s)(<%(?:!?))(.*?)(%>)", + bygroups(Comment.Preproc, using(PythonLexer), Comment.Preproc), + ), + ( + r"(\$\{)(.*?)(\})", + bygroups(Comment.Preproc, using(PythonLexer), Comment.Preproc), + ), + ( + r"""(?sx) + (.+?) # anything, followed by: + (?: + (?<=\n)(?=%(?!%)|\#\#) | # an eval or comment line + (?=\#\*) | # multiline comment + (?=</?%) | # a python block + # call start or end + (?=\$\{) | # a substitution + (?<=\n)(?=\s*%) | + # - don't consume + (\\\n) | # an escaped newline + \Z # end of string + ) + """, + bygroups(Other, Operator), + ), + (r"\s+", Text), + ], + "ondeftags": [ + (r"<%", Comment.Preproc), + (r"(?<=<%)(include|inherit|namespace|page)", Name.Builtin), + include("tag"), + ], + "tag": [ + (r'((?:\w+)\s*=)\s*(".*?")', bygroups(Name.Attribute, String)), + (r"/?\s*>", Comment.Preproc, "#pop"), + (r"\s+", Text), + ], + "attr": [ + ('".*?"', String, "#pop"), + ("'.*?'", String, "#pop"), + (r"[^\s>]+", String, "#pop"), + ], + } + + +class MakoHtmlLexer(DelegatingLexer): + name = "HTML+Mako" + aliases = ["html+mako"] + + def __init__(self, **options): + super(MakoHtmlLexer, self).__init__(HtmlLexer, MakoLexer, **options) + + +class MakoXmlLexer(DelegatingLexer): + name = "XML+Mako" + aliases = ["xml+mako"] + + def __init__(self, **options): + super(MakoXmlLexer, self).__init__(XmlLexer, MakoLexer, **options) + + +class MakoJavascriptLexer(DelegatingLexer): + name = "JavaScript+Mako" + aliases = ["js+mako", "javascript+mako"] + + def __init__(self, **options): + super(MakoJavascriptLexer, self).__init__( + JavascriptLexer, MakoLexer, **options + ) + + +class MakoCssLexer(DelegatingLexer): + name = "CSS+Mako" + aliases = ["css+mako"] + + def __init__(self, **options): + super(MakoCssLexer, self).__init__(CssLexer, MakoLexer, **options) + + +pygments_html_formatter = HtmlFormatter( + cssclass="syntax-highlighted", linenos=True +) + + +def syntax_highlight(filename="", language=None): + mako_lexer = MakoLexer() + if compat.py3k: + python_lexer = Python3Lexer() + else: + python_lexer = PythonLexer() + if filename.startswith("memory:") or language == "mako": + return lambda string: highlight( + string, mako_lexer, pygments_html_formatter + ) + return lambda string: highlight( + string, python_lexer, pygments_html_formatter + ) diff --git a/third_party/python/Mako/mako/ext/turbogears.py b/third_party/python/Mako/mako/ext/turbogears.py new file mode 100644 index 0000000000..722a6b4b40 --- /dev/null +++ b/third_party/python/Mako/mako/ext/turbogears.py @@ -0,0 +1,61 @@ +# ext/turbogears.py +# Copyright 2006-2020 the Mako authors and contributors <see AUTHORS file> +# +# This module is part of Mako and is released under +# the MIT License: http://www.opensource.org/licenses/mit-license.php + +from mako import compat +from mako.lookup import TemplateLookup +from mako.template import Template + + +class TGPlugin(object): + + """TurboGears compatible Template Plugin.""" + + def __init__(self, extra_vars_func=None, options=None, extension="mak"): + self.extra_vars_func = extra_vars_func + self.extension = extension + if not options: + options = {} + + # Pull the options out and initialize the lookup + lookup_options = {} + for k, v in options.items(): + if k.startswith("mako."): + lookup_options[k[5:]] = v + elif k in ["directories", "filesystem_checks", "module_directory"]: + lookup_options[k] = v + self.lookup = TemplateLookup(**lookup_options) + + self.tmpl_options = {} + # transfer lookup args to template args, based on those available + # in getargspec + for kw in compat.inspect_getargspec(Template.__init__)[0]: + if kw in lookup_options: + self.tmpl_options[kw] = lookup_options[kw] + + def load_template(self, templatename, template_string=None): + """Loads a template from a file or a string""" + if template_string is not None: + return Template(template_string, **self.tmpl_options) + # Translate TG dot notation to normal / template path + if "/" not in templatename: + templatename = ( + "/" + templatename.replace(".", "/") + "." + self.extension + ) + + # Lookup template + return self.lookup.get_template(templatename) + + def render( + self, info, format="html", fragment=False, template=None # noqa + ): + if isinstance(template, compat.string_types): + template = self.load_template(template) + + # Load extra vars func if provided + if self.extra_vars_func: + info.update(self.extra_vars_func()) + + return template.render(**info) diff --git a/third_party/python/Mako/mako/filters.py b/third_party/python/Mako/mako/filters.py new file mode 100644 index 0000000000..0ae33ff486 --- /dev/null +++ b/third_party/python/Mako/mako/filters.py @@ -0,0 +1,219 @@ +# mako/filters.py +# Copyright 2006-2020 the Mako authors and contributors <see AUTHORS file> +# +# This module is part of Mako and is released under +# the MIT License: http://www.opensource.org/licenses/mit-license.php + + +import codecs +import re + +from mako import compat +from mako.compat import codepoint2name +from mako.compat import name2codepoint +from mako.compat import quote_plus +from mako.compat import unquote_plus + +xml_escapes = { + "&": "&", + ">": ">", + "<": "<", + '"': """, # also " in html-only + "'": "'", # also ' in html-only +} + +# XXX: " is valid in HTML and XML +# ' is not valid HTML, but is valid XML + + +def legacy_html_escape(s): + """legacy HTML escape for non-unicode mode.""" + s = s.replace("&", "&") + s = s.replace(">", ">") + s = s.replace("<", "<") + s = s.replace('"', """) + s = s.replace("'", "'") + return s + + +try: + import markupsafe + + html_escape = markupsafe.escape +except ImportError: + html_escape = legacy_html_escape + + +def xml_escape(string): + return re.sub(r'([&<"\'>])', lambda m: xml_escapes[m.group()], string) + + +def url_escape(string): + # convert into a list of octets + string = string.encode("utf8") + return quote_plus(string) + + +def legacy_url_escape(string): + # convert into a list of octets + return quote_plus(string) + + +def url_unescape(string): + text = unquote_plus(string) + if not is_ascii_str(text): + text = text.decode("utf8") + return text + + +def trim(string): + return string.strip() + + +class Decode(object): + def __getattr__(self, key): + def decode(x): + if isinstance(x, compat.text_type): + return x + elif not isinstance(x, compat.binary_type): + return decode(str(x)) + else: + return compat.text_type(x, encoding=key) + + return decode + + +decode = Decode() + + +_ASCII_re = re.compile(r"\A[\x00-\x7f]*\Z") + + +def is_ascii_str(text): + return isinstance(text, str) and _ASCII_re.match(text) + + +################################################################ + + +class XMLEntityEscaper(object): + def __init__(self, codepoint2name, name2codepoint): + self.codepoint2entity = dict( + [ + (c, compat.text_type("&%s;" % n)) + for c, n in codepoint2name.items() + ] + ) + self.name2codepoint = name2codepoint + + def escape_entities(self, text): + """Replace characters with their character entity references. + + Only characters corresponding to a named entity are replaced. + """ + return compat.text_type(text).translate(self.codepoint2entity) + + def __escape(self, m): + codepoint = ord(m.group()) + try: + return self.codepoint2entity[codepoint] + except (KeyError, IndexError): + return "&#x%X;" % codepoint + + __escapable = re.compile(r'["&<>]|[^\x00-\x7f]') + + def escape(self, text): + """Replace characters with their character references. + + Replace characters by their named entity references. + Non-ASCII characters, if they do not have a named entity reference, + are replaced by numerical character references. + + The return value is guaranteed to be ASCII. + """ + return self.__escapable.sub( + self.__escape, compat.text_type(text) + ).encode("ascii") + + # XXX: This regexp will not match all valid XML entity names__. + # (It punts on details involving involving CombiningChars and Extenders.) + # + # .. __: http://www.w3.org/TR/2000/REC-xml-20001006#NT-EntityRef + __characterrefs = re.compile( + r"""& (?: + \#(\d+) + | \#x([\da-f]+) + | ( (?!\d) [:\w] [-.:\w]+ ) + ) ;""", + re.X | re.UNICODE, + ) + + def __unescape(self, m): + dval, hval, name = m.groups() + if dval: + codepoint = int(dval) + elif hval: + codepoint = int(hval, 16) + else: + codepoint = self.name2codepoint.get(name, 0xFFFD) + # U+FFFD = "REPLACEMENT CHARACTER" + if codepoint < 128: + return chr(codepoint) + return chr(codepoint) + + def unescape(self, text): + """Unescape character references. + + All character references (both entity references and numerical + character references) are unescaped. + """ + return self.__characterrefs.sub(self.__unescape, text) + + +_html_entities_escaper = XMLEntityEscaper(codepoint2name, name2codepoint) + +html_entities_escape = _html_entities_escaper.escape_entities +html_entities_unescape = _html_entities_escaper.unescape + + +def htmlentityreplace_errors(ex): + """An encoding error handler. + + This python codecs error handler replaces unencodable + characters with HTML entities, or, if no HTML entity exists for + the character, XML character references:: + + >>> u'The cost was \u20ac12.'.encode('latin1', 'htmlentityreplace') + 'The cost was €12.' + """ + if isinstance(ex, UnicodeEncodeError): + # Handle encoding errors + bad_text = ex.object[ex.start : ex.end] + text = _html_entities_escaper.escape(bad_text) + return (compat.text_type(text), ex.end) + raise ex + + +codecs.register_error("htmlentityreplace", htmlentityreplace_errors) + + +# TODO: options to make this dynamic per-compilation will be added in a later +# release +DEFAULT_ESCAPES = { + "x": "filters.xml_escape", + "h": "filters.html_escape", + "u": "filters.url_escape", + "trim": "filters.trim", + "entity": "filters.html_entities_escape", + "unicode": "unicode", + "decode": "decode", + "str": "str", + "n": "n", +} + +if compat.py3k: + DEFAULT_ESCAPES.update({"unicode": "str"}) + +NON_UNICODE_ESCAPES = DEFAULT_ESCAPES.copy() +NON_UNICODE_ESCAPES["h"] = "filters.legacy_html_escape" +NON_UNICODE_ESCAPES["u"] = "filters.legacy_url_escape" diff --git a/third_party/python/Mako/mako/lexer.py b/third_party/python/Mako/mako/lexer.py new file mode 100644 index 0000000000..a02b57f8a1 --- /dev/null +++ b/third_party/python/Mako/mako/lexer.py @@ -0,0 +1,490 @@ +# mako/lexer.py +# Copyright 2006-2020 the Mako authors and contributors <see AUTHORS file> +# +# This module is part of Mako and is released under +# the MIT License: http://www.opensource.org/licenses/mit-license.php + +"""provides the Lexer class for parsing template strings into parse trees.""" + +import codecs +import re + +from mako import compat +from mako import exceptions +from mako import parsetree +from mako.pygen import adjust_whitespace + +_regexp_cache = {} + + +class Lexer(object): + def __init__( + self, + text, + filename=None, + disable_unicode=False, + input_encoding=None, + preprocessor=None, + ): + self.text = text + self.filename = filename + self.template = parsetree.TemplateNode(self.filename) + self.matched_lineno = 1 + self.matched_charpos = 0 + self.lineno = 1 + self.match_position = 0 + self.tag = [] + self.control_line = [] + self.ternary_stack = [] + self.disable_unicode = disable_unicode + self.encoding = input_encoding + + if compat.py3k and disable_unicode: + raise exceptions.UnsupportedError( + "Mako for Python 3 does not " "support disabling Unicode" + ) + + if preprocessor is None: + self.preprocessor = [] + elif not hasattr(preprocessor, "__iter__"): + self.preprocessor = [preprocessor] + else: + self.preprocessor = preprocessor + + @property + def exception_kwargs(self): + return { + "source": self.text, + "lineno": self.matched_lineno, + "pos": self.matched_charpos, + "filename": self.filename, + } + + def match(self, regexp, flags=None): + """compile the given regexp, cache the reg, and call match_reg().""" + + try: + reg = _regexp_cache[(regexp, flags)] + except KeyError: + if flags: + reg = re.compile(regexp, flags) + else: + reg = re.compile(regexp) + _regexp_cache[(regexp, flags)] = reg + + return self.match_reg(reg) + + def match_reg(self, reg): + """match the given regular expression object to the current text + position. + + if a match occurs, update the current text and line position. + + """ + + mp = self.match_position + + match = reg.match(self.text, self.match_position) + if match: + (start, end) = match.span() + if end == start: + self.match_position = end + 1 + else: + self.match_position = end + self.matched_lineno = self.lineno + lines = re.findall(r"\n", self.text[mp : self.match_position]) + cp = mp - 1 + while cp >= 0 and cp < self.textlength and self.text[cp] != "\n": + cp -= 1 + self.matched_charpos = mp - cp + self.lineno += len(lines) + # print "MATCHED:", match.group(0), "LINE START:", + # self.matched_lineno, "LINE END:", self.lineno + # print "MATCH:", regexp, "\n", self.text[mp : mp + 15], \ + # (match and "TRUE" or "FALSE") + return match + + def parse_until_text(self, watch_nesting, *text): + startpos = self.match_position + text_re = r"|".join(text) + brace_level = 0 + paren_level = 0 + bracket_level = 0 + while True: + match = self.match(r"#.*\n") + if match: + continue + match = self.match( + r"(\"\"\"|\'\'\'|\"|\')[^\\]*?(\\.[^\\]*?)*\1", re.S + ) + if match: + continue + match = self.match(r"(%s)" % text_re) + if match and not ( + watch_nesting + and (brace_level > 0 or paren_level > 0 or bracket_level > 0) + ): + return ( + self.text[ + startpos : self.match_position - len(match.group(1)) + ], + match.group(1), + ) + elif not match: + match = self.match(r"(.*?)(?=\"|\'|#|%s)" % text_re, re.S) + if match: + brace_level += match.group(1).count("{") + brace_level -= match.group(1).count("}") + paren_level += match.group(1).count("(") + paren_level -= match.group(1).count(")") + bracket_level += match.group(1).count("[") + bracket_level -= match.group(1).count("]") + continue + raise exceptions.SyntaxException( + "Expected: %s" % ",".join(text), **self.exception_kwargs + ) + + def append_node(self, nodecls, *args, **kwargs): + kwargs.setdefault("source", self.text) + kwargs.setdefault("lineno", self.matched_lineno) + kwargs.setdefault("pos", self.matched_charpos) + kwargs["filename"] = self.filename + node = nodecls(*args, **kwargs) + if len(self.tag): + self.tag[-1].nodes.append(node) + else: + self.template.nodes.append(node) + # build a set of child nodes for the control line + # (used for loop variable detection) + # also build a set of child nodes on ternary control lines + # (used for determining if a pass needs to be auto-inserted + if self.control_line: + control_frame = self.control_line[-1] + control_frame.nodes.append(node) + if not ( + isinstance(node, parsetree.ControlLine) + and control_frame.is_ternary(node.keyword) + ): + if self.ternary_stack and self.ternary_stack[-1]: + self.ternary_stack[-1][-1].nodes.append(node) + if isinstance(node, parsetree.Tag): + if len(self.tag): + node.parent = self.tag[-1] + self.tag.append(node) + elif isinstance(node, parsetree.ControlLine): + if node.isend: + self.control_line.pop() + self.ternary_stack.pop() + elif node.is_primary: + self.control_line.append(node) + self.ternary_stack.append([]) + elif self.control_line and self.control_line[-1].is_ternary( + node.keyword + ): + self.ternary_stack[-1].append(node) + elif self.control_line and not self.control_line[-1].is_ternary( + node.keyword + ): + raise exceptions.SyntaxException( + "Keyword '%s' not a legal ternary for keyword '%s'" + % (node.keyword, self.control_line[-1].keyword), + **self.exception_kwargs + ) + + _coding_re = re.compile(r"#.*coding[:=]\s*([-\w.]+).*\r?\n") + + def decode_raw_stream(self, text, decode_raw, known_encoding, filename): + """given string/unicode or bytes/string, determine encoding + from magic encoding comment, return body as unicode + or raw if decode_raw=False + + """ + if isinstance(text, compat.text_type): + m = self._coding_re.match(text) + encoding = m and m.group(1) or known_encoding or "ascii" + return encoding, text + + if text.startswith(codecs.BOM_UTF8): + text = text[len(codecs.BOM_UTF8) :] + parsed_encoding = "utf-8" + m = self._coding_re.match(text.decode("utf-8", "ignore")) + if m is not None and m.group(1) != "utf-8": + raise exceptions.CompileException( + "Found utf-8 BOM in file, with conflicting " + "magic encoding comment of '%s'" % m.group(1), + text.decode("utf-8", "ignore"), + 0, + 0, + filename, + ) + else: + m = self._coding_re.match(text.decode("utf-8", "ignore")) + if m: + parsed_encoding = m.group(1) + else: + parsed_encoding = known_encoding or "ascii" + + if decode_raw: + try: + text = text.decode(parsed_encoding) + except UnicodeDecodeError: + raise exceptions.CompileException( + "Unicode decode operation of encoding '%s' failed" + % parsed_encoding, + text.decode("utf-8", "ignore"), + 0, + 0, + filename, + ) + + return parsed_encoding, text + + def parse(self): + self.encoding, self.text = self.decode_raw_stream( + self.text, not self.disable_unicode, self.encoding, self.filename + ) + + for preproc in self.preprocessor: + self.text = preproc(self.text) + + # push the match marker past the + # encoding comment. + self.match_reg(self._coding_re) + + self.textlength = len(self.text) + + while True: + if self.match_position > self.textlength: + break + + if self.match_end(): + break + if self.match_expression(): + continue + if self.match_control_line(): + continue + if self.match_comment(): + continue + if self.match_tag_start(): + continue + if self.match_tag_end(): + continue + if self.match_python_block(): + continue + if self.match_text(): + continue + + if self.match_position > self.textlength: + break + raise exceptions.CompileException("assertion failed") + + if len(self.tag): + raise exceptions.SyntaxException( + "Unclosed tag: <%%%s>" % self.tag[-1].keyword, + **self.exception_kwargs + ) + if len(self.control_line): + raise exceptions.SyntaxException( + "Unterminated control keyword: '%s'" + % self.control_line[-1].keyword, + self.text, + self.control_line[-1].lineno, + self.control_line[-1].pos, + self.filename, + ) + return self.template + + def match_tag_start(self): + match = self.match( + r""" + \<% # opening tag + + ([\w\.\:]+) # keyword + + ((?:\s+\w+|\s*=\s*|".*?"|'.*?')*) # attrname, = \ + # sign, string expression + + \s* # more whitespace + + (/)?> # closing + + """, + re.I | re.S | re.X, + ) + + if match: + keyword, attr, isend = match.groups() + self.keyword = keyword + attributes = {} + if attr: + for att in re.findall( + r"\s*(\w+)\s*=\s*(?:'([^']*)'|\"([^\"]*)\")", attr + ): + key, val1, val2 = att + text = val1 or val2 + text = text.replace("\r\n", "\n") + attributes[key] = text + self.append_node(parsetree.Tag, keyword, attributes) + if isend: + self.tag.pop() + else: + if keyword == "text": + match = self.match(r"(.*?)(?=\</%text>)", re.S) + if not match: + raise exceptions.SyntaxException( + "Unclosed tag: <%%%s>" % self.tag[-1].keyword, + **self.exception_kwargs + ) + self.append_node(parsetree.Text, match.group(1)) + return self.match_tag_end() + return True + else: + return False + + def match_tag_end(self): + match = self.match(r"\</%[\t ]*(.+?)[\t ]*>") + if match: + if not len(self.tag): + raise exceptions.SyntaxException( + "Closing tag without opening tag: </%%%s>" + % match.group(1), + **self.exception_kwargs + ) + elif self.tag[-1].keyword != match.group(1): + raise exceptions.SyntaxException( + "Closing tag </%%%s> does not match tag: <%%%s>" + % (match.group(1), self.tag[-1].keyword), + **self.exception_kwargs + ) + self.tag.pop() + return True + else: + return False + + def match_end(self): + match = self.match(r"\Z", re.S) + if match: + string = match.group() + if string: + return string + else: + return True + else: + return False + + def match_text(self): + match = self.match( + r""" + (.*?) # anything, followed by: + ( + (?<=\n)(?=[ \t]*(?=%|\#\#)) # an eval or line-based + # comment preceded by a + # consumed newline and whitespace + | + (?=\${) # an expression + | + (?=</?[%&]) # a substitution or block or call start or end + # - don't consume + | + (\\\r?\n) # an escaped newline - throw away + | + \Z # end of string + )""", + re.X | re.S, + ) + + if match: + text = match.group(1) + if text: + self.append_node(parsetree.Text, text) + return True + else: + return False + + def match_python_block(self): + match = self.match(r"<%(!)?") + if match: + line, pos = self.matched_lineno, self.matched_charpos + text, end = self.parse_until_text(False, r"%>") + # the trailing newline helps + # compiler.parse() not complain about indentation + text = adjust_whitespace(text) + "\n" + self.append_node( + parsetree.Code, + text, + match.group(1) == "!", + lineno=line, + pos=pos, + ) + return True + else: + return False + + def match_expression(self): + match = self.match(r"\${") + if match: + line, pos = self.matched_lineno, self.matched_charpos + text, end = self.parse_until_text(True, r"\|", r"}") + if end == "|": + escapes, end = self.parse_until_text(True, r"}") + else: + escapes = "" + text = text.replace("\r\n", "\n") + self.append_node( + parsetree.Expression, + text, + escapes.strip(), + lineno=line, + pos=pos, + ) + return True + else: + return False + + def match_control_line(self): + match = self.match( + r"(?<=^)[\t ]*(%(?!%)|##)[\t ]*((?:(?:\\r?\n)|[^\r\n])*)" + r"(?:\r?\n|\Z)", + re.M, + ) + if match: + operator = match.group(1) + text = match.group(2) + if operator == "%": + m2 = re.match(r"(end)?(\w+)\s*(.*)", text) + if not m2: + raise exceptions.SyntaxException( + "Invalid control line: '%s'" % text, + **self.exception_kwargs + ) + isend, keyword = m2.group(1, 2) + isend = isend is not None + + if isend: + if not len(self.control_line): + raise exceptions.SyntaxException( + "No starting keyword '%s' for '%s'" + % (keyword, text), + **self.exception_kwargs + ) + elif self.control_line[-1].keyword != keyword: + raise exceptions.SyntaxException( + "Keyword '%s' doesn't match keyword '%s'" + % (text, self.control_line[-1].keyword), + **self.exception_kwargs + ) + self.append_node(parsetree.ControlLine, keyword, isend, text) + else: + self.append_node(parsetree.Comment, text) + return True + else: + return False + + def match_comment(self): + """matches the multiline version of a comment""" + match = self.match(r"<%doc>(.*?)</%doc>", re.S) + if match: + self.append_node(parsetree.Comment, match.group(1)) + return True + else: + return False diff --git a/third_party/python/Mako/mako/lookup.py b/third_party/python/Mako/mako/lookup.py new file mode 100644 index 0000000000..476326d4d2 --- /dev/null +++ b/third_party/python/Mako/mako/lookup.py @@ -0,0 +1,372 @@ +# mako/lookup.py +# Copyright 2006-2020 the Mako authors and contributors <see AUTHORS file> +# +# This module is part of Mako and is released under +# the MIT License: http://www.opensource.org/licenses/mit-license.php + +import os +import posixpath +import re +import stat + +from mako import exceptions +from mako import util +from mako.template import Template + +try: + import threading +except: + import dummy_threading as threading + + +class TemplateCollection(object): + + """Represent a collection of :class:`.Template` objects, + identifiable via URI. + + A :class:`.TemplateCollection` is linked to the usage of + all template tags that address other templates, such + as ``<%include>``, ``<%namespace>``, and ``<%inherit>``. + The ``file`` attribute of each of those tags refers + to a string URI that is passed to that :class:`.Template` + object's :class:`.TemplateCollection` for resolution. + + :class:`.TemplateCollection` is an abstract class, + with the usual default implementation being :class:`.TemplateLookup`. + + """ + + def has_template(self, uri): + """Return ``True`` if this :class:`.TemplateLookup` is + capable of returning a :class:`.Template` object for the + given ``uri``. + + :param uri: String URI of the template to be resolved. + + """ + try: + self.get_template(uri) + return True + except exceptions.TemplateLookupException: + return False + + def get_template(self, uri, relativeto=None): + """Return a :class:`.Template` object corresponding to the given + ``uri``. + + The default implementation raises + :class:`.NotImplementedError`. Implementations should + raise :class:`.TemplateLookupException` if the given ``uri`` + cannot be resolved. + + :param uri: String URI of the template to be resolved. + :param relativeto: if present, the given ``uri`` is assumed to + be relative to this URI. + + """ + raise NotImplementedError() + + def filename_to_uri(self, uri, filename): + """Convert the given ``filename`` to a URI relative to + this :class:`.TemplateCollection`.""" + + return uri + + def adjust_uri(self, uri, filename): + """Adjust the given ``uri`` based on the calling ``filename``. + + When this method is called from the runtime, the + ``filename`` parameter is taken directly to the ``filename`` + attribute of the calling template. Therefore a custom + :class:`.TemplateCollection` subclass can place any string + identifier desired in the ``filename`` parameter of the + :class:`.Template` objects it constructs and have them come back + here. + + """ + return uri + + +class TemplateLookup(TemplateCollection): + + """Represent a collection of templates that locates template source files + from the local filesystem. + + The primary argument is the ``directories`` argument, the list of + directories to search: + + .. sourcecode:: python + + lookup = TemplateLookup(["/path/to/templates"]) + some_template = lookup.get_template("/index.html") + + The :class:`.TemplateLookup` can also be given :class:`.Template` objects + programatically using :meth:`.put_string` or :meth:`.put_template`: + + .. sourcecode:: python + + lookup = TemplateLookup() + lookup.put_string("base.html", ''' + <html><body>${self.next()}</body></html> + ''') + lookup.put_string("hello.html", ''' + <%include file='base.html'/> + + Hello, world ! + ''') + + + :param directories: A list of directory names which will be + searched for a particular template URI. The URI is appended + to each directory and the filesystem checked. + + :param collection_size: Approximate size of the collection used + to store templates. If left at its default of ``-1``, the size + is unbounded, and a plain Python dictionary is used to + relate URI strings to :class:`.Template` instances. + Otherwise, a least-recently-used cache object is used which + will maintain the size of the collection approximately to + the number given. + + :param filesystem_checks: When at its default value of ``True``, + each call to :meth:`.TemplateLookup.get_template()` will + compare the filesystem last modified time to the time in + which an existing :class:`.Template` object was created. + This allows the :class:`.TemplateLookup` to regenerate a + new :class:`.Template` whenever the original source has + been updated. Set this to ``False`` for a very minor + performance increase. + + :param modulename_callable: A callable which, when present, + is passed the path of the source file as well as the + requested URI, and then returns the full path of the + generated Python module file. This is used to inject + alternate schemes for Python module location. If left at + its default of ``None``, the built in system of generation + based on ``module_directory`` plus ``uri`` is used. + + All other keyword parameters available for + :class:`.Template` are mirrored here. When new + :class:`.Template` objects are created, the keywords + established with this :class:`.TemplateLookup` are passed on + to each new :class:`.Template`. + + """ + + def __init__( + self, + directories=None, + module_directory=None, + filesystem_checks=True, + collection_size=-1, + format_exceptions=False, + error_handler=None, + disable_unicode=False, + bytestring_passthrough=False, + output_encoding=None, + encoding_errors="strict", + cache_args=None, + cache_impl="beaker", + cache_enabled=True, + cache_type=None, + cache_dir=None, + cache_url=None, + modulename_callable=None, + module_writer=None, + default_filters=None, + buffer_filters=(), + strict_undefined=False, + imports=None, + future_imports=None, + enable_loop=True, + input_encoding=None, + preprocessor=None, + lexer_cls=None, + include_error_handler=None, + ): + + self.directories = [ + posixpath.normpath(d) for d in util.to_list(directories, ()) + ] + self.module_directory = module_directory + self.modulename_callable = modulename_callable + self.filesystem_checks = filesystem_checks + self.collection_size = collection_size + + if cache_args is None: + cache_args = {} + # transfer deprecated cache_* args + if cache_dir: + cache_args.setdefault("dir", cache_dir) + if cache_url: + cache_args.setdefault("url", cache_url) + if cache_type: + cache_args.setdefault("type", cache_type) + + self.template_args = { + "format_exceptions": format_exceptions, + "error_handler": error_handler, + "include_error_handler": include_error_handler, + "disable_unicode": disable_unicode, + "bytestring_passthrough": bytestring_passthrough, + "output_encoding": output_encoding, + "cache_impl": cache_impl, + "encoding_errors": encoding_errors, + "input_encoding": input_encoding, + "module_directory": module_directory, + "module_writer": module_writer, + "cache_args": cache_args, + "cache_enabled": cache_enabled, + "default_filters": default_filters, + "buffer_filters": buffer_filters, + "strict_undefined": strict_undefined, + "imports": imports, + "future_imports": future_imports, + "enable_loop": enable_loop, + "preprocessor": preprocessor, + "lexer_cls": lexer_cls, + } + + if collection_size == -1: + self._collection = {} + self._uri_cache = {} + else: + self._collection = util.LRUCache(collection_size) + self._uri_cache = util.LRUCache(collection_size) + self._mutex = threading.Lock() + + def get_template(self, uri): + """Return a :class:`.Template` object corresponding to the given + ``uri``. + + .. note:: The ``relativeto`` argument is not supported here at + the moment. + + """ + + try: + if self.filesystem_checks: + return self._check(uri, self._collection[uri]) + else: + return self._collection[uri] + except KeyError: + u = re.sub(r"^\/+", "", uri) + for dir_ in self.directories: + # make sure the path seperators are posix - os.altsep is empty + # on POSIX and cannot be used. + dir_ = dir_.replace(os.path.sep, posixpath.sep) + srcfile = posixpath.normpath(posixpath.join(dir_, u)) + if os.path.isfile(srcfile): + return self._load(srcfile, uri) + else: + raise exceptions.TopLevelLookupException( + "Cant locate template for uri %r" % uri + ) + + def adjust_uri(self, uri, relativeto): + """Adjust the given ``uri`` based on the given relative URI.""" + + key = (uri, relativeto) + if key in self._uri_cache: + return self._uri_cache[key] + + if uri[0] != "/": + if relativeto is not None: + v = self._uri_cache[key] = posixpath.join( + posixpath.dirname(relativeto), uri + ) + else: + v = self._uri_cache[key] = "/" + uri + else: + v = self._uri_cache[key] = uri + return v + + def filename_to_uri(self, filename): + """Convert the given ``filename`` to a URI relative to + this :class:`.TemplateCollection`.""" + + try: + return self._uri_cache[filename] + except KeyError: + value = self._relativeize(filename) + self._uri_cache[filename] = value + return value + + def _relativeize(self, filename): + """Return the portion of a filename that is 'relative' + to the directories in this lookup. + + """ + + filename = posixpath.normpath(filename) + for dir_ in self.directories: + if filename[0 : len(dir_)] == dir_: + return filename[len(dir_) :] + else: + return None + + def _load(self, filename, uri): + self._mutex.acquire() + try: + try: + # try returning from collection one + # more time in case concurrent thread already loaded + return self._collection[uri] + except KeyError: + pass + try: + if self.modulename_callable is not None: + module_filename = self.modulename_callable(filename, uri) + else: + module_filename = None + self._collection[uri] = template = Template( + uri=uri, + filename=posixpath.normpath(filename), + lookup=self, + module_filename=module_filename, + **self.template_args + ) + return template + except: + # if compilation fails etc, ensure + # template is removed from collection, + # re-raise + self._collection.pop(uri, None) + raise + finally: + self._mutex.release() + + def _check(self, uri, template): + if template.filename is None: + return template + + try: + template_stat = os.stat(template.filename) + if template.module._modified_time < template_stat[stat.ST_MTIME]: + self._collection.pop(uri, None) + return self._load(template.filename, uri) + else: + return template + except OSError: + self._collection.pop(uri, None) + raise exceptions.TemplateLookupException( + "Cant locate template for uri %r" % uri + ) + + def put_string(self, uri, text): + """Place a new :class:`.Template` object into this + :class:`.TemplateLookup`, based on the given string of + ``text``. + + """ + self._collection[uri] = Template( + text, lookup=self, uri=uri, **self.template_args + ) + + def put_template(self, uri, template): + """Place a new :class:`.Template` object into this + :class:`.TemplateLookup`, based on the given + :class:`.Template` object. + + """ + self._collection[uri] = template diff --git a/third_party/python/Mako/mako/parsetree.py b/third_party/python/Mako/mako/parsetree.py new file mode 100644 index 0000000000..801e48a7f4 --- /dev/null +++ b/third_party/python/Mako/mako/parsetree.py @@ -0,0 +1,665 @@ +# mako/parsetree.py +# Copyright 2006-2020 the Mako authors and contributors <see AUTHORS file> +# +# This module is part of Mako and is released under +# the MIT License: http://www.opensource.org/licenses/mit-license.php + +"""defines the parse tree components for Mako templates.""" + +import re + +from mako import ast +from mako import compat +from mako import exceptions +from mako import filters +from mako import util + + +class Node(object): + + """base class for a Node in the parse tree.""" + + def __init__(self, source, lineno, pos, filename): + self.source = source + self.lineno = lineno + self.pos = pos + self.filename = filename + + @property + def exception_kwargs(self): + return { + "source": self.source, + "lineno": self.lineno, + "pos": self.pos, + "filename": self.filename, + } + + def get_children(self): + return [] + + def accept_visitor(self, visitor): + def traverse(node): + for n in node.get_children(): + n.accept_visitor(visitor) + + method = getattr(visitor, "visit" + self.__class__.__name__, traverse) + method(self) + + +class TemplateNode(Node): + + """a 'container' node that stores the overall collection of nodes.""" + + def __init__(self, filename): + super(TemplateNode, self).__init__("", 0, 0, filename) + self.nodes = [] + self.page_attributes = {} + + def get_children(self): + return self.nodes + + def __repr__(self): + return "TemplateNode(%s, %r)" % ( + util.sorted_dict_repr(self.page_attributes), + self.nodes, + ) + + +class ControlLine(Node): + + """defines a control line, a line-oriented python line or end tag. + + e.g.:: + + % if foo: + (markup) + % endif + + """ + + has_loop_context = False + + def __init__(self, keyword, isend, text, **kwargs): + super(ControlLine, self).__init__(**kwargs) + self.text = text + self.keyword = keyword + self.isend = isend + self.is_primary = keyword in ["for", "if", "while", "try", "with"] + self.nodes = [] + if self.isend: + self._declared_identifiers = [] + self._undeclared_identifiers = [] + else: + code = ast.PythonFragment(text, **self.exception_kwargs) + self._declared_identifiers = code.declared_identifiers + self._undeclared_identifiers = code.undeclared_identifiers + + def get_children(self): + return self.nodes + + def declared_identifiers(self): + return self._declared_identifiers + + def undeclared_identifiers(self): + return self._undeclared_identifiers + + def is_ternary(self, keyword): + """return true if the given keyword is a ternary keyword + for this ControlLine""" + + return keyword in { + "if": set(["else", "elif"]), + "try": set(["except", "finally"]), + "for": set(["else"]), + }.get(self.keyword, []) + + def __repr__(self): + return "ControlLine(%r, %r, %r, %r)" % ( + self.keyword, + self.text, + self.isend, + (self.lineno, self.pos), + ) + + +class Text(Node): + + """defines plain text in the template.""" + + def __init__(self, content, **kwargs): + super(Text, self).__init__(**kwargs) + self.content = content + + def __repr__(self): + return "Text(%r, %r)" % (self.content, (self.lineno, self.pos)) + + +class Code(Node): + + """defines a Python code block, either inline or module level. + + e.g.:: + + inline: + <% + x = 12 + %> + + module level: + <%! + import logger + %> + + """ + + def __init__(self, text, ismodule, **kwargs): + super(Code, self).__init__(**kwargs) + self.text = text + self.ismodule = ismodule + self.code = ast.PythonCode(text, **self.exception_kwargs) + + def declared_identifiers(self): + return self.code.declared_identifiers + + def undeclared_identifiers(self): + return self.code.undeclared_identifiers + + def __repr__(self): + return "Code(%r, %r, %r)" % ( + self.text, + self.ismodule, + (self.lineno, self.pos), + ) + + +class Comment(Node): + + """defines a comment line. + + # this is a comment + + """ + + def __init__(self, text, **kwargs): + super(Comment, self).__init__(**kwargs) + self.text = text + + def __repr__(self): + return "Comment(%r, %r)" % (self.text, (self.lineno, self.pos)) + + +class Expression(Node): + + """defines an inline expression. + + ${x+y} + + """ + + def __init__(self, text, escapes, **kwargs): + super(Expression, self).__init__(**kwargs) + self.text = text + self.escapes = escapes + self.escapes_code = ast.ArgumentList(escapes, **self.exception_kwargs) + self.code = ast.PythonCode(text, **self.exception_kwargs) + + def declared_identifiers(self): + return [] + + def undeclared_identifiers(self): + # TODO: make the "filter" shortcut list configurable at parse/gen time + return self.code.undeclared_identifiers.union( + self.escapes_code.undeclared_identifiers.difference( + set(filters.DEFAULT_ESCAPES.keys()) + ) + ).difference(self.code.declared_identifiers) + + def __repr__(self): + return "Expression(%r, %r, %r)" % ( + self.text, + self.escapes_code.args, + (self.lineno, self.pos), + ) + + +class _TagMeta(type): + + """metaclass to allow Tag to produce a subclass according to + its keyword""" + + _classmap = {} + + def __init__(cls, clsname, bases, dict_): + if getattr(cls, "__keyword__", None) is not None: + cls._classmap[cls.__keyword__] = cls + super(_TagMeta, cls).__init__(clsname, bases, dict_) + + def __call__(cls, keyword, attributes, **kwargs): + if ":" in keyword: + ns, defname = keyword.split(":") + return type.__call__( + CallNamespaceTag, ns, defname, attributes, **kwargs + ) + + try: + cls = _TagMeta._classmap[keyword] + except KeyError: + raise exceptions.CompileException( + "No such tag: '%s'" % keyword, + source=kwargs["source"], + lineno=kwargs["lineno"], + pos=kwargs["pos"], + filename=kwargs["filename"], + ) + return type.__call__(cls, keyword, attributes, **kwargs) + + +class Tag(compat.with_metaclass(_TagMeta, Node)): + """abstract base class for tags. + + e.g.:: + + <%sometag/> + + <%someothertag> + stuff + </%someothertag> + + """ + + __keyword__ = None + + def __init__( + self, + keyword, + attributes, + expressions, + nonexpressions, + required, + **kwargs + ): + r"""construct a new Tag instance. + + this constructor not called directly, and is only called + by subclasses. + + :param keyword: the tag keyword + + :param attributes: raw dictionary of attribute key/value pairs + + :param expressions: a set of identifiers that are legal attributes, + which can also contain embedded expressions + + :param nonexpressions: a set of identifiers that are legal + attributes, which cannot contain embedded expressions + + :param \**kwargs: + other arguments passed to the Node superclass (lineno, pos) + + """ + super(Tag, self).__init__(**kwargs) + self.keyword = keyword + self.attributes = attributes + self._parse_attributes(expressions, nonexpressions) + missing = [r for r in required if r not in self.parsed_attributes] + if len(missing): + raise exceptions.CompileException( + "Missing attribute(s): %s" + % ",".join([repr(m) for m in missing]), + **self.exception_kwargs + ) + self.parent = None + self.nodes = [] + + def is_root(self): + return self.parent is None + + def get_children(self): + return self.nodes + + def _parse_attributes(self, expressions, nonexpressions): + undeclared_identifiers = set() + self.parsed_attributes = {} + for key in self.attributes: + if key in expressions: + expr = [] + for x in re.compile(r"(\${.+?})", re.S).split( + self.attributes[key] + ): + m = re.compile(r"^\${(.+?)}$", re.S).match(x) + if m: + code = ast.PythonCode( + m.group(1).rstrip(), **self.exception_kwargs + ) + # we aren't discarding "declared_identifiers" here, + # which we do so that list comprehension-declared + # variables aren't counted. As yet can't find a + # condition that requires it here. + undeclared_identifiers = undeclared_identifiers.union( + code.undeclared_identifiers + ) + expr.append("(%s)" % m.group(1)) + else: + if x: + expr.append(repr(x)) + self.parsed_attributes[key] = " + ".join(expr) or repr("") + elif key in nonexpressions: + if re.search(r"\${.+?}", self.attributes[key]): + raise exceptions.CompileException( + "Attibute '%s' in tag '%s' does not allow embedded " + "expressions" % (key, self.keyword), + **self.exception_kwargs + ) + self.parsed_attributes[key] = repr(self.attributes[key]) + else: + raise exceptions.CompileException( + "Invalid attribute for tag '%s': '%s'" + % (self.keyword, key), + **self.exception_kwargs + ) + self.expression_undeclared_identifiers = undeclared_identifiers + + def declared_identifiers(self): + return [] + + def undeclared_identifiers(self): + return self.expression_undeclared_identifiers + + def __repr__(self): + return "%s(%r, %s, %r, %r)" % ( + self.__class__.__name__, + self.keyword, + util.sorted_dict_repr(self.attributes), + (self.lineno, self.pos), + self.nodes, + ) + + +class IncludeTag(Tag): + __keyword__ = "include" + + def __init__(self, keyword, attributes, **kwargs): + super(IncludeTag, self).__init__( + keyword, + attributes, + ("file", "import", "args"), + (), + ("file",), + **kwargs + ) + self.page_args = ast.PythonCode( + "__DUMMY(%s)" % attributes.get("args", ""), **self.exception_kwargs + ) + + def declared_identifiers(self): + return [] + + def undeclared_identifiers(self): + identifiers = self.page_args.undeclared_identifiers.difference( + set(["__DUMMY"]) + ).difference(self.page_args.declared_identifiers) + return identifiers.union( + super(IncludeTag, self).undeclared_identifiers() + ) + + +class NamespaceTag(Tag): + __keyword__ = "namespace" + + def __init__(self, keyword, attributes, **kwargs): + super(NamespaceTag, self).__init__( + keyword, + attributes, + ("file",), + ("name", "inheritable", "import", "module"), + (), + **kwargs + ) + + self.name = attributes.get("name", "__anon_%s" % hex(abs(id(self)))) + if "name" not in attributes and "import" not in attributes: + raise exceptions.CompileException( + "'name' and/or 'import' attributes are required " + "for <%namespace>", + **self.exception_kwargs + ) + if "file" in attributes and "module" in attributes: + raise exceptions.CompileException( + "<%namespace> may only have one of 'file' or 'module'", + **self.exception_kwargs + ) + + def declared_identifiers(self): + return [] + + +class TextTag(Tag): + __keyword__ = "text" + + def __init__(self, keyword, attributes, **kwargs): + super(TextTag, self).__init__( + keyword, attributes, (), ("filter"), (), **kwargs + ) + self.filter_args = ast.ArgumentList( + attributes.get("filter", ""), **self.exception_kwargs + ) + + def undeclared_identifiers(self): + return self.filter_args.undeclared_identifiers.difference( + filters.DEFAULT_ESCAPES.keys() + ).union(self.expression_undeclared_identifiers) + + +class DefTag(Tag): + __keyword__ = "def" + + def __init__(self, keyword, attributes, **kwargs): + expressions = ["buffered", "cached"] + [ + c for c in attributes if c.startswith("cache_") + ] + + super(DefTag, self).__init__( + keyword, + attributes, + expressions, + ("name", "filter", "decorator"), + ("name",), + **kwargs + ) + name = attributes["name"] + if re.match(r"^[\w_]+$", name): + raise exceptions.CompileException( + "Missing parenthesis in %def", **self.exception_kwargs + ) + self.function_decl = ast.FunctionDecl( + "def " + name + ":pass", **self.exception_kwargs + ) + self.name = self.function_decl.funcname + self.decorator = attributes.get("decorator", "") + self.filter_args = ast.ArgumentList( + attributes.get("filter", ""), **self.exception_kwargs + ) + + is_anonymous = False + is_block = False + + @property + def funcname(self): + return self.function_decl.funcname + + def get_argument_expressions(self, **kw): + return self.function_decl.get_argument_expressions(**kw) + + def declared_identifiers(self): + return self.function_decl.allargnames + + def undeclared_identifiers(self): + res = [] + for c in self.function_decl.defaults: + res += list( + ast.PythonCode( + c, **self.exception_kwargs + ).undeclared_identifiers + ) + return ( + set(res) + .union( + self.filter_args.undeclared_identifiers.difference( + filters.DEFAULT_ESCAPES.keys() + ) + ) + .union(self.expression_undeclared_identifiers) + .difference(self.function_decl.allargnames) + ) + + +class BlockTag(Tag): + __keyword__ = "block" + + def __init__(self, keyword, attributes, **kwargs): + expressions = ["buffered", "cached", "args"] + [ + c for c in attributes if c.startswith("cache_") + ] + + super(BlockTag, self).__init__( + keyword, + attributes, + expressions, + ("name", "filter", "decorator"), + (), + **kwargs + ) + name = attributes.get("name") + if name and not re.match(r"^[\w_]+$", name): + raise exceptions.CompileException( + "%block may not specify an argument signature", + **self.exception_kwargs + ) + if not name and attributes.get("args", None): + raise exceptions.CompileException( + "Only named %blocks may specify args", **self.exception_kwargs + ) + self.body_decl = ast.FunctionArgs( + attributes.get("args", ""), **self.exception_kwargs + ) + + self.name = name + self.decorator = attributes.get("decorator", "") + self.filter_args = ast.ArgumentList( + attributes.get("filter", ""), **self.exception_kwargs + ) + + is_block = True + + @property + def is_anonymous(self): + return self.name is None + + @property + def funcname(self): + return self.name or "__M_anon_%d" % (self.lineno,) + + def get_argument_expressions(self, **kw): + return self.body_decl.get_argument_expressions(**kw) + + def declared_identifiers(self): + return self.body_decl.allargnames + + def undeclared_identifiers(self): + return ( + self.filter_args.undeclared_identifiers.difference( + filters.DEFAULT_ESCAPES.keys() + ) + ).union(self.expression_undeclared_identifiers) + + +class CallTag(Tag): + __keyword__ = "call" + + def __init__(self, keyword, attributes, **kwargs): + super(CallTag, self).__init__( + keyword, attributes, ("args"), ("expr",), ("expr",), **kwargs + ) + self.expression = attributes["expr"] + self.code = ast.PythonCode(self.expression, **self.exception_kwargs) + self.body_decl = ast.FunctionArgs( + attributes.get("args", ""), **self.exception_kwargs + ) + + def declared_identifiers(self): + return self.code.declared_identifiers.union(self.body_decl.allargnames) + + def undeclared_identifiers(self): + return self.code.undeclared_identifiers.difference( + self.code.declared_identifiers + ) + + +class CallNamespaceTag(Tag): + def __init__(self, namespace, defname, attributes, **kwargs): + super(CallNamespaceTag, self).__init__( + namespace + ":" + defname, + attributes, + tuple(attributes.keys()) + ("args",), + (), + (), + **kwargs + ) + + self.expression = "%s.%s(%s)" % ( + namespace, + defname, + ",".join( + [ + "%s=%s" % (k, v) + for k, v in self.parsed_attributes.items() + if k != "args" + ] + ), + ) + self.code = ast.PythonCode(self.expression, **self.exception_kwargs) + self.body_decl = ast.FunctionArgs( + attributes.get("args", ""), **self.exception_kwargs + ) + + def declared_identifiers(self): + return self.code.declared_identifiers.union(self.body_decl.allargnames) + + def undeclared_identifiers(self): + return self.code.undeclared_identifiers.difference( + self.code.declared_identifiers + ) + + +class InheritTag(Tag): + __keyword__ = "inherit" + + def __init__(self, keyword, attributes, **kwargs): + super(InheritTag, self).__init__( + keyword, attributes, ("file",), (), ("file",), **kwargs + ) + + +class PageTag(Tag): + __keyword__ = "page" + + def __init__(self, keyword, attributes, **kwargs): + expressions = [ + "cached", + "args", + "expression_filter", + "enable_loop", + ] + [c for c in attributes if c.startswith("cache_")] + + super(PageTag, self).__init__( + keyword, attributes, expressions, (), (), **kwargs + ) + self.body_decl = ast.FunctionArgs( + attributes.get("args", ""), **self.exception_kwargs + ) + self.filter_args = ast.ArgumentList( + attributes.get("expression_filter", ""), **self.exception_kwargs + ) + + def declared_identifiers(self): + return self.body_decl.allargnames diff --git a/third_party/python/Mako/mako/pygen.py b/third_party/python/Mako/mako/pygen.py new file mode 100644 index 0000000000..947721f1a5 --- /dev/null +++ b/third_party/python/Mako/mako/pygen.py @@ -0,0 +1,305 @@ +# mako/pygen.py +# Copyright 2006-2020 the Mako authors and contributors <see AUTHORS file> +# +# This module is part of Mako and is released under +# the MIT License: http://www.opensource.org/licenses/mit-license.php + +"""utilities for generating and formatting literal Python code.""" + +import re + +from mako import exceptions + + +class PythonPrinter(object): + def __init__(self, stream): + # indentation counter + self.indent = 0 + + # a stack storing information about why we incremented + # the indentation counter, to help us determine if we + # should decrement it + self.indent_detail = [] + + # the string of whitespace multiplied by the indent + # counter to produce a line + self.indentstring = " " + + # the stream we are writing to + self.stream = stream + + # current line number + self.lineno = 1 + + # a list of lines that represents a buffered "block" of code, + # which can be later printed relative to an indent level + self.line_buffer = [] + + self.in_indent_lines = False + + self._reset_multi_line_flags() + + # mapping of generated python lines to template + # source lines + self.source_map = {} + + def _update_lineno(self, num): + self.lineno += num + + def start_source(self, lineno): + if self.lineno not in self.source_map: + self.source_map[self.lineno] = lineno + + def write_blanks(self, num): + self.stream.write("\n" * num) + self._update_lineno(num) + + def write_indented_block(self, block, starting_lineno=None): + """print a line or lines of python which already contain indentation. + + The indentation of the total block of lines will be adjusted to that of + the current indent level.""" + self.in_indent_lines = False + for i, l in enumerate(re.split(r"\r?\n", block)): + self.line_buffer.append(l) + if starting_lineno is not None: + self.start_source(starting_lineno + i) + self._update_lineno(1) + + def writelines(self, *lines): + """print a series of lines of python.""" + for line in lines: + self.writeline(line) + + def writeline(self, line): + """print a line of python, indenting it according to the current + indent level. + + this also adjusts the indentation counter according to the + content of the line. + + """ + + if not self.in_indent_lines: + self._flush_adjusted_lines() + self.in_indent_lines = True + + if ( + line is None + or re.match(r"^\s*#", line) + or re.match(r"^\s*$", line) + ): + hastext = False + else: + hastext = True + + is_comment = line and len(line) and line[0] == "#" + + # see if this line should decrease the indentation level + if not is_comment and (not hastext or self._is_unindentor(line)): + + if self.indent > 0: + self.indent -= 1 + # if the indent_detail stack is empty, the user + # probably put extra closures - the resulting + # module wont compile. + if len(self.indent_detail) == 0: + raise exceptions.SyntaxException( + "Too many whitespace closures" + ) + self.indent_detail.pop() + + if line is None: + return + + # write the line + self.stream.write(self._indent_line(line) + "\n") + self._update_lineno(len(line.split("\n"))) + + # see if this line should increase the indentation level. + # note that a line can both decrase (before printing) and + # then increase (after printing) the indentation level. + + if re.search(r":[ \t]*(?:#.*)?$", line): + # increment indentation count, and also + # keep track of what the keyword was that indented us, + # if it is a python compound statement keyword + # where we might have to look for an "unindent" keyword + match = re.match(r"^\s*(if|try|elif|while|for|with)", line) + if match: + # its a "compound" keyword, so we will check for "unindentors" + indentor = match.group(1) + self.indent += 1 + self.indent_detail.append(indentor) + else: + indentor = None + # its not a "compound" keyword. but lets also + # test for valid Python keywords that might be indenting us, + # else assume its a non-indenting line + m2 = re.match( + r"^\s*(def|class|else|elif|except|finally)", line + ) + if m2: + self.indent += 1 + self.indent_detail.append(indentor) + + def close(self): + """close this printer, flushing any remaining lines.""" + self._flush_adjusted_lines() + + def _is_unindentor(self, line): + """return true if the given line is an 'unindentor', + relative to the last 'indent' event received. + + """ + + # no indentation detail has been pushed on; return False + if len(self.indent_detail) == 0: + return False + + indentor = self.indent_detail[-1] + + # the last indent keyword we grabbed is not a + # compound statement keyword; return False + if indentor is None: + return False + + # if the current line doesnt have one of the "unindentor" keywords, + # return False + match = re.match(r"^\s*(else|elif|except|finally).*\:", line) + if not match: + return False + + # whitespace matches up, we have a compound indentor, + # and this line has an unindentor, this + # is probably good enough + return True + + # should we decide that its not good enough, heres + # more stuff to check. + # keyword = match.group(1) + + # match the original indent keyword + # for crit in [ + # (r'if|elif', r'else|elif'), + # (r'try', r'except|finally|else'), + # (r'while|for', r'else'), + # ]: + # if re.match(crit[0], indentor) and re.match(crit[1], keyword): + # return True + + # return False + + def _indent_line(self, line, stripspace=""): + """indent the given line according to the current indent level. + + stripspace is a string of space that will be truncated from the + start of the line before indenting.""" + + return re.sub( + r"^%s" % stripspace, self.indentstring * self.indent, line + ) + + def _reset_multi_line_flags(self): + """reset the flags which would indicate we are in a backslashed + or triple-quoted section.""" + + self.backslashed, self.triplequoted = False, False + + def _in_multi_line(self, line): + """return true if the given line is part of a multi-line block, + via backslash or triple-quote.""" + + # we are only looking for explicitly joined lines here, not + # implicit ones (i.e. brackets, braces etc.). this is just to + # guard against the possibility of modifying the space inside of + # a literal multiline string with unfortunately placed + # whitespace + + current_state = self.backslashed or self.triplequoted + + if re.search(r"\\$", line): + self.backslashed = True + else: + self.backslashed = False + + triples = len(re.findall(r"\"\"\"|\'\'\'", line)) + if triples == 1 or triples % 2 != 0: + self.triplequoted = not self.triplequoted + + return current_state + + def _flush_adjusted_lines(self): + stripspace = None + self._reset_multi_line_flags() + + for entry in self.line_buffer: + if self._in_multi_line(entry): + self.stream.write(entry + "\n") + else: + entry = entry.expandtabs() + if stripspace is None and re.search(r"^[ \t]*[^# \t]", entry): + stripspace = re.match(r"^([ \t]*)", entry).group(1) + self.stream.write(self._indent_line(entry, stripspace) + "\n") + + self.line_buffer = [] + self._reset_multi_line_flags() + + +def adjust_whitespace(text): + """remove the left-whitespace margin of a block of Python code.""" + + state = [False, False] + (backslashed, triplequoted) = (0, 1) + + def in_multi_line(line): + start_state = state[backslashed] or state[triplequoted] + + if re.search(r"\\$", line): + state[backslashed] = True + else: + state[backslashed] = False + + def match(reg, t): + m = re.match(reg, t) + if m: + return m, t[len(m.group(0)) :] + else: + return None, t + + while line: + if state[triplequoted]: + m, line = match(r"%s" % state[triplequoted], line) + if m: + state[triplequoted] = False + else: + m, line = match(r".*?(?=%s|$)" % state[triplequoted], line) + else: + m, line = match(r"#", line) + if m: + return start_state + + m, line = match(r"\"\"\"|\'\'\'", line) + if m: + state[triplequoted] = m.group(0) + continue + + m, line = match(r".*?(?=\"\"\"|\'\'\'|#|$)", line) + + return start_state + + def _indent_line(line, stripspace=""): + return re.sub(r"^%s" % stripspace, "", line) + + lines = [] + stripspace = None + + for line in re.split(r"\r?\n", text): + if in_multi_line(line): + lines.append(line) + else: + line = line.expandtabs() + if stripspace is None and re.search(r"^[ \t]*[^# \t]", line): + stripspace = re.match(r"^([ \t]*)", line).group(1) + lines.append(_indent_line(line, stripspace)) + return "\n".join(lines) diff --git a/third_party/python/Mako/mako/pyparser.py b/third_party/python/Mako/mako/pyparser.py new file mode 100644 index 0000000000..b16672d60c --- /dev/null +++ b/third_party/python/Mako/mako/pyparser.py @@ -0,0 +1,242 @@ +# mako/pyparser.py +# Copyright 2006-2020 the Mako authors and contributors <see AUTHORS file> +# +# This module is part of Mako and is released under +# the MIT License: http://www.opensource.org/licenses/mit-license.php + +"""Handles parsing of Python code. + +Parsing to AST is done via _ast on Python > 2.5, otherwise the compiler +module is used. +""" + +import operator + +import _ast + +from mako import _ast_util +from mako import compat +from mako import exceptions +from mako import util +from mako.compat import arg_stringname + +if compat.py3k: + # words that cannot be assigned to (notably + # smaller than the total keys in __builtins__) + reserved = set(["True", "False", "None", "print"]) + + # the "id" attribute on a function node + arg_id = operator.attrgetter("arg") +else: + # words that cannot be assigned to (notably + # smaller than the total keys in __builtins__) + reserved = set(["True", "False", "None"]) + + # the "id" attribute on a function node + arg_id = operator.attrgetter("id") + +util.restore__ast(_ast) + + +def parse(code, mode="exec", **exception_kwargs): + """Parse an expression into AST""" + + try: + return _ast_util.parse(code, "<unknown>", mode) + except Exception: + raise exceptions.SyntaxException( + "(%s) %s (%r)" + % ( + compat.exception_as().__class__.__name__, + compat.exception_as(), + code[0:50], + ), + **exception_kwargs + ) + + +class FindIdentifiers(_ast_util.NodeVisitor): + def __init__(self, listener, **exception_kwargs): + self.in_function = False + self.in_assign_targets = False + self.local_ident_stack = set() + self.listener = listener + self.exception_kwargs = exception_kwargs + + def _add_declared(self, name): + if not self.in_function: + self.listener.declared_identifiers.add(name) + else: + self.local_ident_stack.add(name) + + def visit_ClassDef(self, node): + self._add_declared(node.name) + + def visit_Assign(self, node): + + # flip around the visiting of Assign so the expression gets + # evaluated first, in the case of a clause like "x=x+5" (x + # is undeclared) + + self.visit(node.value) + in_a = self.in_assign_targets + self.in_assign_targets = True + for n in node.targets: + self.visit(n) + self.in_assign_targets = in_a + + if compat.py3k: + + # ExceptHandler is in Python 2, but this block only works in + # Python 3 (and is required there) + + def visit_ExceptHandler(self, node): + if node.name is not None: + self._add_declared(node.name) + if node.type is not None: + self.visit(node.type) + for statement in node.body: + self.visit(statement) + + def visit_Lambda(self, node, *args): + self._visit_function(node, True) + + def visit_FunctionDef(self, node): + self._add_declared(node.name) + self._visit_function(node, False) + + def _expand_tuples(self, args): + for arg in args: + if isinstance(arg, _ast.Tuple): + for n in arg.elts: + yield n + else: + yield arg + + def _visit_function(self, node, islambda): + + # push function state onto stack. dont log any more + # identifiers as "declared" until outside of the function, + # but keep logging identifiers as "undeclared". track + # argument names in each function header so they arent + # counted as "undeclared" + + inf = self.in_function + self.in_function = True + + local_ident_stack = self.local_ident_stack + self.local_ident_stack = local_ident_stack.union( + [arg_id(arg) for arg in self._expand_tuples(node.args.args)] + ) + if islambda: + self.visit(node.body) + else: + for n in node.body: + self.visit(n) + self.in_function = inf + self.local_ident_stack = local_ident_stack + + def visit_For(self, node): + + # flip around visit + + self.visit(node.iter) + self.visit(node.target) + for statement in node.body: + self.visit(statement) + for statement in node.orelse: + self.visit(statement) + + def visit_Name(self, node): + if isinstance(node.ctx, _ast.Store): + # this is eqiuvalent to visit_AssName in + # compiler + self._add_declared(node.id) + elif ( + node.id not in reserved + and node.id not in self.listener.declared_identifiers + and node.id not in self.local_ident_stack + ): + self.listener.undeclared_identifiers.add(node.id) + + def visit_Import(self, node): + for name in node.names: + if name.asname is not None: + self._add_declared(name.asname) + else: + self._add_declared(name.name.split(".")[0]) + + def visit_ImportFrom(self, node): + for name in node.names: + if name.asname is not None: + self._add_declared(name.asname) + else: + if name.name == "*": + raise exceptions.CompileException( + "'import *' is not supported, since all identifier " + "names must be explicitly declared. Please use the " + "form 'from <modulename> import <name1>, <name2>, " + "...' instead.", + **self.exception_kwargs + ) + self._add_declared(name.name) + + +class FindTuple(_ast_util.NodeVisitor): + def __init__(self, listener, code_factory, **exception_kwargs): + self.listener = listener + self.exception_kwargs = exception_kwargs + self.code_factory = code_factory + + def visit_Tuple(self, node): + for n in node.elts: + p = self.code_factory(n, **self.exception_kwargs) + self.listener.codeargs.append(p) + self.listener.args.append(ExpressionGenerator(n).value()) + ldi = self.listener.declared_identifiers + self.listener.declared_identifiers = ldi.union( + p.declared_identifiers + ) + lui = self.listener.undeclared_identifiers + self.listener.undeclared_identifiers = lui.union( + p.undeclared_identifiers + ) + + +class ParseFunc(_ast_util.NodeVisitor): + def __init__(self, listener, **exception_kwargs): + self.listener = listener + self.exception_kwargs = exception_kwargs + + def visit_FunctionDef(self, node): + self.listener.funcname = node.name + + argnames = [arg_id(arg) for arg in node.args.args] + if node.args.vararg: + argnames.append(arg_stringname(node.args.vararg)) + + if compat.py2k: + # kw-only args don't exist in Python 2 + kwargnames = [] + else: + kwargnames = [arg_id(arg) for arg in node.args.kwonlyargs] + if node.args.kwarg: + kwargnames.append(arg_stringname(node.args.kwarg)) + self.listener.argnames = argnames + self.listener.defaults = node.args.defaults # ast + self.listener.kwargnames = kwargnames + if compat.py2k: + self.listener.kwdefaults = [] + else: + self.listener.kwdefaults = node.args.kw_defaults + self.listener.varargs = node.args.vararg + self.listener.kwargs = node.args.kwarg + + +class ExpressionGenerator(object): + def __init__(self, astnode): + self.generator = _ast_util.SourceGenerator(" " * 4) + self.generator.visit(astnode) + + def value(self): + return "".join(self.generator.result) diff --git a/third_party/python/Mako/mako/runtime.py b/third_party/python/Mako/mako/runtime.py new file mode 100644 index 0000000000..465908e6d8 --- /dev/null +++ b/third_party/python/Mako/mako/runtime.py @@ -0,0 +1,970 @@ +# mako/runtime.py +# Copyright 2006-2020 the Mako authors and contributors <see AUTHORS file> +# +# This module is part of Mako and is released under +# the MIT License: http://www.opensource.org/licenses/mit-license.php + +"""provides runtime services for templates, including Context, +Namespace, and various helper functions.""" + +import functools +import sys + +from mako import compat +from mako import exceptions +from mako import util +from mako.compat import compat_builtins + + +class Context(object): + + """Provides runtime namespace, output buffer, and various + callstacks for templates. + + See :ref:`runtime_toplevel` for detail on the usage of + :class:`.Context`. + + """ + + def __init__(self, buffer, **data): + self._buffer_stack = [buffer] + + self._data = data + + self._kwargs = data.copy() + self._with_template = None + self._outputting_as_unicode = None + self.namespaces = {} + + # "capture" function which proxies to the + # generic "capture" function + self._data["capture"] = functools.partial(capture, self) + + # "caller" stack used by def calls with content + self.caller_stack = self._data["caller"] = CallerStack() + + def _set_with_template(self, t): + self._with_template = t + illegal_names = t.reserved_names.intersection(self._data) + if illegal_names: + raise exceptions.NameConflictError( + "Reserved words passed to render(): %s" + % ", ".join(illegal_names) + ) + + @property + def lookup(self): + """Return the :class:`.TemplateLookup` associated + with this :class:`.Context`. + + """ + return self._with_template.lookup + + @property + def kwargs(self): + """Return the dictionary of top level keyword arguments associated + with this :class:`.Context`. + + This dictionary only includes the top-level arguments passed to + :meth:`.Template.render`. It does not include names produced within + the template execution such as local variable names or special names + such as ``self``, ``next``, etc. + + The purpose of this dictionary is primarily for the case that + a :class:`.Template` accepts arguments via its ``<%page>`` tag, + which are normally expected to be passed via :meth:`.Template.render`, + except the template is being called in an inheritance context, + using the ``body()`` method. :attr:`.Context.kwargs` can then be + used to propagate these arguments to the inheriting template:: + + ${next.body(**context.kwargs)} + + """ + return self._kwargs.copy() + + def push_caller(self, caller): + """Push a ``caller`` callable onto the callstack for + this :class:`.Context`.""" + + self.caller_stack.append(caller) + + def pop_caller(self): + """Pop a ``caller`` callable onto the callstack for this + :class:`.Context`.""" + + del self.caller_stack[-1] + + def keys(self): + """Return a list of all names established in this :class:`.Context`.""" + + return list(self._data.keys()) + + def __getitem__(self, key): + if key in self._data: + return self._data[key] + else: + return compat_builtins.__dict__[key] + + def _push_writer(self): + """push a capturing buffer onto this Context and return + the new writer function.""" + + buf = util.FastEncodingBuffer() + self._buffer_stack.append(buf) + return buf.write + + def _pop_buffer_and_writer(self): + """pop the most recent capturing buffer from this Context + and return the current writer after the pop. + + """ + + buf = self._buffer_stack.pop() + return buf, self._buffer_stack[-1].write + + def _push_buffer(self): + """push a capturing buffer onto this Context.""" + + self._push_writer() + + def _pop_buffer(self): + """pop the most recent capturing buffer from this Context.""" + + return self._buffer_stack.pop() + + def get(self, key, default=None): + """Return a value from this :class:`.Context`.""" + + return self._data.get(key, compat_builtins.__dict__.get(key, default)) + + def write(self, string): + """Write a string to this :class:`.Context` object's + underlying output buffer.""" + + self._buffer_stack[-1].write(string) + + def writer(self): + """Return the current writer function.""" + + return self._buffer_stack[-1].write + + def _copy(self): + c = Context.__new__(Context) + c._buffer_stack = self._buffer_stack + c._data = self._data.copy() + c._kwargs = self._kwargs + c._with_template = self._with_template + c._outputting_as_unicode = self._outputting_as_unicode + c.namespaces = self.namespaces + c.caller_stack = self.caller_stack + return c + + def _locals(self, d): + """Create a new :class:`.Context` with a copy of this + :class:`.Context`'s current state, + updated with the given dictionary. + + The :attr:`.Context.kwargs` collection remains + unaffected. + + + """ + + if not d: + return self + c = self._copy() + c._data.update(d) + return c + + def _clean_inheritance_tokens(self): + """create a new copy of this :class:`.Context`. with + tokens related to inheritance state removed.""" + + c = self._copy() + x = c._data + x.pop("self", None) + x.pop("parent", None) + x.pop("next", None) + return c + + +class CallerStack(list): + def __init__(self): + self.nextcaller = None + + def __nonzero__(self): + return self.__bool__() + + def __bool__(self): + return len(self) and self._get_caller() and True or False + + def _get_caller(self): + # this method can be removed once + # codegen MAGIC_NUMBER moves past 7 + return self[-1] + + def __getattr__(self, key): + return getattr(self._get_caller(), key) + + def _push_frame(self): + frame = self.nextcaller or None + self.append(frame) + self.nextcaller = None + return frame + + def _pop_frame(self): + self.nextcaller = self.pop() + + +class Undefined(object): + + """Represents an undefined value in a template. + + All template modules have a constant value + ``UNDEFINED`` present which is an instance of this + object. + + """ + + def __str__(self): + raise NameError("Undefined") + + def __nonzero__(self): + return self.__bool__() + + def __bool__(self): + return False + + +UNDEFINED = Undefined() +STOP_RENDERING = "" + + +class LoopStack(object): + + """a stack for LoopContexts that implements the context manager protocol + to automatically pop off the top of the stack on context exit + """ + + def __init__(self): + self.stack = [] + + def _enter(self, iterable): + self._push(iterable) + return self._top + + def _exit(self): + self._pop() + return self._top + + @property + def _top(self): + if self.stack: + return self.stack[-1] + else: + return self + + def _pop(self): + return self.stack.pop() + + def _push(self, iterable): + new = LoopContext(iterable) + if self.stack: + new.parent = self.stack[-1] + return self.stack.append(new) + + def __getattr__(self, key): + raise exceptions.RuntimeException("No loop context is established") + + def __iter__(self): + return iter(self._top) + + +class LoopContext(object): + + """A magic loop variable. + Automatically accessible in any ``% for`` block. + + See the section :ref:`loop_context` for usage + notes. + + :attr:`parent` -> :class:`.LoopContext` or ``None`` + The parent loop, if one exists. + :attr:`index` -> `int` + The 0-based iteration count. + :attr:`reverse_index` -> `int` + The number of iterations remaining. + :attr:`first` -> `bool` + ``True`` on the first iteration, ``False`` otherwise. + :attr:`last` -> `bool` + ``True`` on the last iteration, ``False`` otherwise. + :attr:`even` -> `bool` + ``True`` when ``index`` is even. + :attr:`odd` -> `bool` + ``True`` when ``index`` is odd. + """ + + def __init__(self, iterable): + self._iterable = iterable + self.index = 0 + self.parent = None + + def __iter__(self): + for i in self._iterable: + yield i + self.index += 1 + + @util.memoized_instancemethod + def __len__(self): + return len(self._iterable) + + @property + def reverse_index(self): + return len(self) - self.index - 1 + + @property + def first(self): + return self.index == 0 + + @property + def last(self): + return self.index == len(self) - 1 + + @property + def even(self): + return not self.odd + + @property + def odd(self): + return bool(self.index % 2) + + def cycle(self, *values): + """Cycle through values as the loop progresses. + """ + if not values: + raise ValueError("You must provide values to cycle through") + return values[self.index % len(values)] + + +class _NSAttr(object): + def __init__(self, parent): + self.__parent = parent + + def __getattr__(self, key): + ns = self.__parent + while ns: + if hasattr(ns.module, key): + return getattr(ns.module, key) + else: + ns = ns.inherits + raise AttributeError(key) + + +class Namespace(object): + + """Provides access to collections of rendering methods, which + can be local, from other templates, or from imported modules. + + To access a particular rendering method referenced by a + :class:`.Namespace`, use plain attribute access: + + .. sourcecode:: mako + + ${some_namespace.foo(x, y, z)} + + :class:`.Namespace` also contains several built-in attributes + described here. + + """ + + def __init__( + self, + name, + context, + callables=None, + inherits=None, + populate_self=True, + calling_uri=None, + ): + self.name = name + self.context = context + self.inherits = inherits + if callables is not None: + self.callables = dict([(c.__name__, c) for c in callables]) + + callables = () + + module = None + """The Python module referenced by this :class:`.Namespace`. + + If the namespace references a :class:`.Template`, then + this module is the equivalent of ``template.module``, + i.e. the generated module for the template. + + """ + + template = None + """The :class:`.Template` object referenced by this + :class:`.Namespace`, if any. + + """ + + context = None + """The :class:`.Context` object for this :class:`.Namespace`. + + Namespaces are often created with copies of contexts that + contain slightly different data, particularly in inheritance + scenarios. Using the :class:`.Context` off of a :class:`.Namespace` one + can traverse an entire chain of templates that inherit from + one-another. + + """ + + filename = None + """The path of the filesystem file used for this + :class:`.Namespace`'s module or template. + + If this is a pure module-based + :class:`.Namespace`, this evaluates to ``module.__file__``. If a + template-based namespace, it evaluates to the original + template file location. + + """ + + uri = None + """The URI for this :class:`.Namespace`'s template. + + I.e. whatever was sent to :meth:`.TemplateLookup.get_template()`. + + This is the equivalent of :attr:`.Template.uri`. + + """ + + _templateuri = None + + @util.memoized_property + def attr(self): + """Access module level attributes by name. + + This accessor allows templates to supply "scalar" + attributes which are particularly handy in inheritance + relationships. + + .. seealso:: + + :ref:`inheritance_attr` + + :ref:`namespace_attr_for_includes` + + """ + return _NSAttr(self) + + def get_namespace(self, uri): + """Return a :class:`.Namespace` corresponding to the given ``uri``. + + If the given ``uri`` is a relative URI (i.e. it does not + contain a leading slash ``/``), the ``uri`` is adjusted to + be relative to the ``uri`` of the namespace itself. This + method is therefore mostly useful off of the built-in + ``local`` namespace, described in :ref:`namespace_local`. + + In + most cases, a template wouldn't need this function, and + should instead use the ``<%namespace>`` tag to load + namespaces. However, since all ``<%namespace>`` tags are + evaluated before the body of a template ever runs, + this method can be used to locate namespaces using + expressions that were generated within the body code of + the template, or to conditionally use a particular + namespace. + + """ + key = (self, uri) + if key in self.context.namespaces: + return self.context.namespaces[key] + else: + ns = TemplateNamespace( + uri, + self.context._copy(), + templateuri=uri, + calling_uri=self._templateuri, + ) + self.context.namespaces[key] = ns + return ns + + def get_template(self, uri): + """Return a :class:`.Template` from the given ``uri``. + + The ``uri`` resolution is relative to the ``uri`` of this + :class:`.Namespace` object's :class:`.Template`. + + """ + return _lookup_template(self.context, uri, self._templateuri) + + def get_cached(self, key, **kwargs): + """Return a value from the :class:`.Cache` referenced by this + :class:`.Namespace` object's :class:`.Template`. + + The advantage to this method versus direct access to the + :class:`.Cache` is that the configuration parameters + declared in ``<%page>`` take effect here, thereby calling + up the same configured backend as that configured + by ``<%page>``. + + """ + + return self.cache.get(key, **kwargs) + + @property + def cache(self): + """Return the :class:`.Cache` object referenced + by this :class:`.Namespace` object's + :class:`.Template`. + + """ + return self.template.cache + + def include_file(self, uri, **kwargs): + """Include a file at the given ``uri``.""" + + _include_file(self.context, uri, self._templateuri, **kwargs) + + def _populate(self, d, l): + for ident in l: + if ident == "*": + for (k, v) in self._get_star(): + d[k] = v + else: + d[ident] = getattr(self, ident) + + def _get_star(self): + if self.callables: + for key in self.callables: + yield (key, self.callables[key]) + + def __getattr__(self, key): + if key in self.callables: + val = self.callables[key] + elif self.inherits: + val = getattr(self.inherits, key) + else: + raise AttributeError( + "Namespace '%s' has no member '%s'" % (self.name, key) + ) + setattr(self, key, val) + return val + + +class TemplateNamespace(Namespace): + + """A :class:`.Namespace` specific to a :class:`.Template` instance.""" + + def __init__( + self, + name, + context, + template=None, + templateuri=None, + callables=None, + inherits=None, + populate_self=True, + calling_uri=None, + ): + self.name = name + self.context = context + self.inherits = inherits + if callables is not None: + self.callables = dict([(c.__name__, c) for c in callables]) + + if templateuri is not None: + self.template = _lookup_template(context, templateuri, calling_uri) + self._templateuri = self.template.module._template_uri + elif template is not None: + self.template = template + self._templateuri = template.module._template_uri + else: + raise TypeError("'template' argument is required.") + + if populate_self: + lclcallable, lclcontext = _populate_self_namespace( + context, self.template, self_ns=self + ) + + @property + def module(self): + """The Python module referenced by this :class:`.Namespace`. + + If the namespace references a :class:`.Template`, then + this module is the equivalent of ``template.module``, + i.e. the generated module for the template. + + """ + return self.template.module + + @property + def filename(self): + """The path of the filesystem file used for this + :class:`.Namespace`'s module or template. + """ + return self.template.filename + + @property + def uri(self): + """The URI for this :class:`.Namespace`'s template. + + I.e. whatever was sent to :meth:`.TemplateLookup.get_template()`. + + This is the equivalent of :attr:`.Template.uri`. + + """ + return self.template.uri + + def _get_star(self): + if self.callables: + for key in self.callables: + yield (key, self.callables[key]) + + def get(key): + callable_ = self.template._get_def_callable(key) + return functools.partial(callable_, self.context) + + for k in self.template.module._exports: + yield (k, get(k)) + + def __getattr__(self, key): + if key in self.callables: + val = self.callables[key] + elif self.template.has_def(key): + callable_ = self.template._get_def_callable(key) + val = functools.partial(callable_, self.context) + elif self.inherits: + val = getattr(self.inherits, key) + + else: + raise AttributeError( + "Namespace '%s' has no member '%s'" % (self.name, key) + ) + setattr(self, key, val) + return val + + +class ModuleNamespace(Namespace): + + """A :class:`.Namespace` specific to a Python module instance.""" + + def __init__( + self, + name, + context, + module, + callables=None, + inherits=None, + populate_self=True, + calling_uri=None, + ): + self.name = name + self.context = context + self.inherits = inherits + if callables is not None: + self.callables = dict([(c.__name__, c) for c in callables]) + + mod = __import__(module) + for token in module.split(".")[1:]: + mod = getattr(mod, token) + self.module = mod + + @property + def filename(self): + """The path of the filesystem file used for this + :class:`.Namespace`'s module or template. + """ + return self.module.__file__ + + def _get_star(self): + if self.callables: + for key in self.callables: + yield (key, self.callables[key]) + for key in dir(self.module): + if key[0] != "_": + callable_ = getattr(self.module, key) + if callable(callable_): + yield key, functools.partial(callable_, self.context) + + def __getattr__(self, key): + if key in self.callables: + val = self.callables[key] + elif hasattr(self.module, key): + callable_ = getattr(self.module, key) + val = functools.partial(callable_, self.context) + elif self.inherits: + val = getattr(self.inherits, key) + else: + raise AttributeError( + "Namespace '%s' has no member '%s'" % (self.name, key) + ) + setattr(self, key, val) + return val + + +def supports_caller(func): + """Apply a caller_stack compatibility decorator to a plain + Python function. + + See the example in :ref:`namespaces_python_modules`. + + """ + + def wrap_stackframe(context, *args, **kwargs): + context.caller_stack._push_frame() + try: + return func(context, *args, **kwargs) + finally: + context.caller_stack._pop_frame() + + return wrap_stackframe + + +def capture(context, callable_, *args, **kwargs): + """Execute the given template def, capturing the output into + a buffer. + + See the example in :ref:`namespaces_python_modules`. + + """ + + if not callable(callable_): + raise exceptions.RuntimeException( + "capture() function expects a callable as " + "its argument (i.e. capture(func, *args, **kwargs))" + ) + context._push_buffer() + try: + callable_(*args, **kwargs) + finally: + buf = context._pop_buffer() + return buf.getvalue() + + +def _decorate_toplevel(fn): + def decorate_render(render_fn): + def go(context, *args, **kw): + def y(*args, **kw): + return render_fn(context, *args, **kw) + + try: + y.__name__ = render_fn.__name__[7:] + except TypeError: + # < Python 2.4 + pass + return fn(y)(context, *args, **kw) + + return go + + return decorate_render + + +def _decorate_inline(context, fn): + def decorate_render(render_fn): + dec = fn(render_fn) + + def go(*args, **kw): + return dec(context, *args, **kw) + + return go + + return decorate_render + + +def _include_file(context, uri, calling_uri, **kwargs): + """locate the template from the given uri and include it in + the current output.""" + + template = _lookup_template(context, uri, calling_uri) + (callable_, ctx) = _populate_self_namespace( + context._clean_inheritance_tokens(), template + ) + kwargs = _kwargs_for_include(callable_, context._data, **kwargs) + if template.include_error_handler: + try: + callable_(ctx, **kwargs) + except Exception: + result = template.include_error_handler(ctx, compat.exception_as()) + if not result: + compat.reraise(*sys.exc_info()) + else: + callable_(ctx, **kwargs) + + +def _inherit_from(context, uri, calling_uri): + """called by the _inherit method in template modules to set + up the inheritance chain at the start of a template's + execution.""" + + if uri is None: + return None + template = _lookup_template(context, uri, calling_uri) + self_ns = context["self"] + ih = self_ns + while ih.inherits is not None: + ih = ih.inherits + lclcontext = context._locals({"next": ih}) + ih.inherits = TemplateNamespace( + "self:%s" % template.uri, + lclcontext, + template=template, + populate_self=False, + ) + context._data["parent"] = lclcontext._data["local"] = ih.inherits + callable_ = getattr(template.module, "_mako_inherit", None) + if callable_ is not None: + ret = callable_(template, lclcontext) + if ret: + return ret + + gen_ns = getattr(template.module, "_mako_generate_namespaces", None) + if gen_ns is not None: + gen_ns(context) + return (template.callable_, lclcontext) + + +def _lookup_template(context, uri, relativeto): + lookup = context._with_template.lookup + if lookup is None: + raise exceptions.TemplateLookupException( + "Template '%s' has no TemplateLookup associated" + % context._with_template.uri + ) + uri = lookup.adjust_uri(uri, relativeto) + try: + return lookup.get_template(uri) + except exceptions.TopLevelLookupException: + raise exceptions.TemplateLookupException(str(compat.exception_as())) + + +def _populate_self_namespace(context, template, self_ns=None): + if self_ns is None: + self_ns = TemplateNamespace( + "self:%s" % template.uri, + context, + template=template, + populate_self=False, + ) + context._data["self"] = context._data["local"] = self_ns + if hasattr(template.module, "_mako_inherit"): + ret = template.module._mako_inherit(template, context) + if ret: + return ret + return (template.callable_, context) + + +def _render(template, callable_, args, data, as_unicode=False): + """create a Context and return the string + output of the given template and template callable.""" + + if as_unicode: + buf = util.FastEncodingBuffer(as_unicode=True) + elif template.bytestring_passthrough: + buf = compat.StringIO() + else: + buf = util.FastEncodingBuffer( + as_unicode=as_unicode, + encoding=template.output_encoding, + errors=template.encoding_errors, + ) + context = Context(buf, **data) + context._outputting_as_unicode = as_unicode + context._set_with_template(template) + + _render_context( + template, + callable_, + context, + *args, + **_kwargs_for_callable(callable_, data) + ) + return context._pop_buffer().getvalue() + + +def _kwargs_for_callable(callable_, data): + argspec = compat.inspect_getargspec(callable_) + # for normal pages, **pageargs is usually present + if argspec[2]: + return data + + # for rendering defs from the top level, figure out the args + namedargs = argspec[0] + [v for v in argspec[1:3] if v is not None] + kwargs = {} + for arg in namedargs: + if arg != "context" and arg in data and arg not in kwargs: + kwargs[arg] = data[arg] + return kwargs + + +def _kwargs_for_include(callable_, data, **kwargs): + argspec = compat.inspect_getargspec(callable_) + namedargs = argspec[0] + [v for v in argspec[1:3] if v is not None] + for arg in namedargs: + if arg != "context" and arg in data and arg not in kwargs: + kwargs[arg] = data[arg] + return kwargs + + +def _render_context(tmpl, callable_, context, *args, **kwargs): + import mako.template as template + + # create polymorphic 'self' namespace for this + # template with possibly updated context + if not isinstance(tmpl, template.DefTemplate): + # if main render method, call from the base of the inheritance stack + (inherit, lclcontext) = _populate_self_namespace(context, tmpl) + _exec_template(inherit, lclcontext, args=args, kwargs=kwargs) + else: + # otherwise, call the actual rendering method specified + (inherit, lclcontext) = _populate_self_namespace(context, tmpl.parent) + _exec_template(callable_, context, args=args, kwargs=kwargs) + + +def _exec_template(callable_, context, args=None, kwargs=None): + """execute a rendering callable given the callable, a + Context, and optional explicit arguments + + the contextual Template will be located if it exists, and + the error handling options specified on that Template will + be interpreted here. + """ + template = context._with_template + if template is not None and ( + template.format_exceptions or template.error_handler + ): + try: + callable_(context, *args, **kwargs) + except Exception: + _render_error(template, context, compat.exception_as()) + except: + e = sys.exc_info()[0] + _render_error(template, context, e) + else: + callable_(context, *args, **kwargs) + + +def _render_error(template, context, error): + if template.error_handler: + result = template.error_handler(context, error) + if not result: + compat.reraise(*sys.exc_info()) + else: + error_template = exceptions.html_error_template() + if context._outputting_as_unicode: + context._buffer_stack[:] = [ + util.FastEncodingBuffer(as_unicode=True) + ] + else: + context._buffer_stack[:] = [ + util.FastEncodingBuffer( + error_template.output_encoding, + error_template.encoding_errors, + ) + ] + + context._set_with_template(error_template) + error_template.render_context(context, error=error) diff --git a/third_party/python/Mako/mako/template.py b/third_party/python/Mako/mako/template.py new file mode 100644 index 0000000000..3fd08714b8 --- /dev/null +++ b/third_party/python/Mako/mako/template.py @@ -0,0 +1,780 @@ +# mako/template.py +# Copyright 2006-2020 the Mako authors and contributors <see AUTHORS file> +# +# This module is part of Mako and is released under +# the MIT License: http://www.opensource.org/licenses/mit-license.php + +"""Provides the Template class, a facade for parsing, generating and executing +template strings, as well as template runtime operations.""" + +import json +import os +import re +import shutil +import stat +import sys +import tempfile +import types +import weakref + +from mako import cache +from mako import codegen +from mako import compat +from mako import exceptions +from mako import runtime +from mako import util +from mako.lexer import Lexer + + +class Template(object): + + r"""Represents a compiled template. + + :class:`.Template` includes a reference to the original + template source (via the :attr:`.source` attribute) + as well as the source code of the + generated Python module (i.e. the :attr:`.code` attribute), + as well as a reference to an actual Python module. + + :class:`.Template` is constructed using either a literal string + representing the template text, or a filename representing a filesystem + path to a source file. + + :param text: textual template source. This argument is mutually + exclusive versus the ``filename`` parameter. + + :param filename: filename of the source template. This argument is + mutually exclusive versus the ``text`` parameter. + + :param buffer_filters: string list of filters to be applied + to the output of ``%def``\ s which are buffered, cached, or otherwise + filtered, after all filters + defined with the ``%def`` itself have been applied. Allows the + creation of default expression filters that let the output + of return-valued ``%def``\ s "opt out" of that filtering via + passing special attributes or objects. + + :param bytestring_passthrough: When ``True``, and ``output_encoding`` is + set to ``None``, and :meth:`.Template.render` is used to render, + the `StringIO` or `cStringIO` buffer will be used instead of the + default "fast" buffer. This allows raw bytestrings in the + output stream, such as in expressions, to pass straight + through to the buffer. This flag is forced + to ``True`` if ``disable_unicode`` is also configured. + + .. versionadded:: 0.4 + Added to provide the same behavior as that of the previous series. + + :param cache_args: Dictionary of cache configuration arguments that + will be passed to the :class:`.CacheImpl`. See :ref:`caching_toplevel`. + + :param cache_dir: + + .. deprecated:: 0.6 + Use the ``'dir'`` argument in the ``cache_args`` dictionary. + See :ref:`caching_toplevel`. + + :param cache_enabled: Boolean flag which enables caching of this + template. See :ref:`caching_toplevel`. + + :param cache_impl: String name of a :class:`.CacheImpl` caching + implementation to use. Defaults to ``'beaker'``. + + :param cache_type: + + .. deprecated:: 0.6 + Use the ``'type'`` argument in the ``cache_args`` dictionary. + See :ref:`caching_toplevel`. + + :param cache_url: + + .. deprecated:: 0.6 + Use the ``'url'`` argument in the ``cache_args`` dictionary. + See :ref:`caching_toplevel`. + + :param default_filters: List of string filter names that will + be applied to all expressions. See :ref:`filtering_default_filters`. + + :param disable_unicode: Disables all awareness of Python Unicode + objects. See :ref:`unicode_disabled`. + + :param enable_loop: When ``True``, enable the ``loop`` context variable. + This can be set to ``False`` to support templates that may + be making usage of the name "``loop``". Individual templates can + re-enable the "loop" context by placing the directive + ``enable_loop="True"`` inside the ``<%page>`` tag -- see + :ref:`migrating_loop`. + + :param encoding_errors: Error parameter passed to ``encode()`` when + string encoding is performed. See :ref:`usage_unicode`. + + :param error_handler: Python callable which is called whenever + compile or runtime exceptions occur. The callable is passed + the current context as well as the exception. If the + callable returns ``True``, the exception is considered to + be handled, else it is re-raised after the function + completes. Is used to provide custom error-rendering + functions. + + .. seealso:: + + :paramref:`.Template.include_error_handler` - include-specific + error handler function + + :param format_exceptions: if ``True``, exceptions which occur during + the render phase of this template will be caught and + formatted into an HTML error page, which then becomes the + rendered result of the :meth:`.render` call. Otherwise, + runtime exceptions are propagated outwards. + + :param imports: String list of Python statements, typically individual + "import" lines, which will be placed into the module level + preamble of all generated Python modules. See the example + in :ref:`filtering_default_filters`. + + :param future_imports: String list of names to import from `__future__`. + These will be concatenated into a comma-separated string and inserted + into the beginning of the template, e.g. ``futures_imports=['FOO', + 'BAR']`` results in ``from __future__ import FOO, BAR``. If you're + interested in using features like the new division operator, you must + use future_imports to convey that to the renderer, as otherwise the + import will not appear as the first executed statement in the generated + code and will therefore not have the desired effect. + + :param include_error_handler: An error handler that runs when this template + is included within another one via the ``<%include>`` tag, and raises an + error. Compare to the :paramref:`.Template.error_handler` option. + + .. versionadded:: 1.0.6 + + .. seealso:: + + :paramref:`.Template.error_handler` - top-level error handler function + + :param input_encoding: Encoding of the template's source code. Can + be used in lieu of the coding comment. See + :ref:`usage_unicode` as well as :ref:`unicode_toplevel` for + details on source encoding. + + :param lookup: a :class:`.TemplateLookup` instance that will be used + for all file lookups via the ``<%namespace>``, + ``<%include>``, and ``<%inherit>`` tags. See + :ref:`usage_templatelookup`. + + :param module_directory: Filesystem location where generated + Python module files will be placed. + + :param module_filename: Overrides the filename of the generated + Python module file. For advanced usage only. + + :param module_writer: A callable which overrides how the Python + module is written entirely. The callable is passed the + encoded source content of the module and the destination + path to be written to. The default behavior of module writing + uses a tempfile in conjunction with a file move in order + to make the operation atomic. So a user-defined module + writing function that mimics the default behavior would be: + + .. sourcecode:: python + + import tempfile + import os + import shutil + + def module_writer(source, outputpath): + (dest, name) = \\ + tempfile.mkstemp( + dir=os.path.dirname(outputpath) + ) + + os.write(dest, source) + os.close(dest) + shutil.move(name, outputpath) + + from mako.template import Template + mytemplate = Template( + filename="index.html", + module_directory="/path/to/modules", + module_writer=module_writer + ) + + The function is provided for unusual configurations where + certain platform-specific permissions or other special + steps are needed. + + :param output_encoding: The encoding to use when :meth:`.render` + is called. + See :ref:`usage_unicode` as well as :ref:`unicode_toplevel`. + + :param preprocessor: Python callable which will be passed + the full template source before it is parsed. The return + result of the callable will be used as the template source + code. + + :param lexer_cls: A :class:`.Lexer` class used to parse + the template. The :class:`.Lexer` class is used by + default. + + .. versionadded:: 0.7.4 + + :param strict_undefined: Replaces the automatic usage of + ``UNDEFINED`` for any undeclared variables not located in + the :class:`.Context` with an immediate raise of + ``NameError``. The advantage is immediate reporting of + missing variables which include the name. + + .. versionadded:: 0.3.6 + + :param uri: string URI or other identifier for this template. + If not provided, the ``uri`` is generated from the filesystem + path, or from the in-memory identity of a non-file-based + template. The primary usage of the ``uri`` is to provide a key + within :class:`.TemplateLookup`, as well as to generate the + file path of the generated Python module file, if + ``module_directory`` is specified. + + """ + + lexer_cls = Lexer + + def __init__( + self, + text=None, + filename=None, + uri=None, + format_exceptions=False, + error_handler=None, + lookup=None, + output_encoding=None, + encoding_errors="strict", + module_directory=None, + cache_args=None, + cache_impl="beaker", + cache_enabled=True, + cache_type=None, + cache_dir=None, + cache_url=None, + module_filename=None, + input_encoding=None, + disable_unicode=False, + module_writer=None, + bytestring_passthrough=False, + default_filters=None, + buffer_filters=(), + strict_undefined=False, + imports=None, + future_imports=None, + enable_loop=True, + preprocessor=None, + lexer_cls=None, + include_error_handler=None, + ): + if uri: + self.module_id = re.sub(r"\W", "_", uri) + self.uri = uri + elif filename: + self.module_id = re.sub(r"\W", "_", filename) + drive, path = os.path.splitdrive(filename) + path = os.path.normpath(path).replace(os.path.sep, "/") + self.uri = path + else: + self.module_id = "memory:" + hex(id(self)) + self.uri = self.module_id + + u_norm = self.uri + if u_norm.startswith("/"): + u_norm = u_norm[1:] + u_norm = os.path.normpath(u_norm) + if u_norm.startswith(".."): + raise exceptions.TemplateLookupException( + 'Template uri "%s" is invalid - ' + "it cannot be relative outside " + "of the root path." % self.uri + ) + + self.input_encoding = input_encoding + self.output_encoding = output_encoding + self.encoding_errors = encoding_errors + self.disable_unicode = disable_unicode + self.bytestring_passthrough = bytestring_passthrough or disable_unicode + self.enable_loop = enable_loop + self.strict_undefined = strict_undefined + self.module_writer = module_writer + + if compat.py3k and disable_unicode: + raise exceptions.UnsupportedError( + "Mako for Python 3 does not " "support disabling Unicode" + ) + elif output_encoding and disable_unicode: + raise exceptions.UnsupportedError( + "output_encoding must be set to " + "None when disable_unicode is used." + ) + if default_filters is None: + if compat.py3k or self.disable_unicode: + self.default_filters = ["str"] + else: + self.default_filters = ["unicode"] + else: + self.default_filters = default_filters + self.buffer_filters = buffer_filters + + self.imports = imports + self.future_imports = future_imports + self.preprocessor = preprocessor + + if lexer_cls is not None: + self.lexer_cls = lexer_cls + + # if plain text, compile code in memory only + if text is not None: + (code, module) = _compile_text(self, text, filename) + self._code = code + self._source = text + ModuleInfo(module, None, self, filename, code, text, uri) + elif filename is not None: + # if template filename and a module directory, load + # a filesystem-based module file, generating if needed + if module_filename is not None: + path = module_filename + elif module_directory is not None: + path = os.path.abspath( + os.path.join( + os.path.normpath(module_directory), u_norm + ".py" + ) + ) + else: + path = None + module = self._compile_from_file(path, filename) + else: + raise exceptions.RuntimeException( + "Template requires text or filename" + ) + + self.module = module + self.filename = filename + self.callable_ = self.module.render_body + self.format_exceptions = format_exceptions + self.error_handler = error_handler + self.include_error_handler = include_error_handler + self.lookup = lookup + + self.module_directory = module_directory + + self._setup_cache_args( + cache_impl, + cache_enabled, + cache_args, + cache_type, + cache_dir, + cache_url, + ) + + @util.memoized_property + def reserved_names(self): + if self.enable_loop: + return codegen.RESERVED_NAMES + else: + return codegen.RESERVED_NAMES.difference(["loop"]) + + def _setup_cache_args( + self, + cache_impl, + cache_enabled, + cache_args, + cache_type, + cache_dir, + cache_url, + ): + self.cache_impl = cache_impl + self.cache_enabled = cache_enabled + if cache_args: + self.cache_args = cache_args + else: + self.cache_args = {} + + # transfer deprecated cache_* args + if cache_type: + self.cache_args["type"] = cache_type + if cache_dir: + self.cache_args["dir"] = cache_dir + if cache_url: + self.cache_args["url"] = cache_url + + def _compile_from_file(self, path, filename): + if path is not None: + util.verify_directory(os.path.dirname(path)) + filemtime = os.stat(filename)[stat.ST_MTIME] + if ( + not os.path.exists(path) + or os.stat(path)[stat.ST_MTIME] < filemtime + ): + data = util.read_file(filename) + _compile_module_file( + self, data, filename, path, self.module_writer + ) + module = compat.load_module(self.module_id, path) + del sys.modules[self.module_id] + if module._magic_number != codegen.MAGIC_NUMBER: + data = util.read_file(filename) + _compile_module_file( + self, data, filename, path, self.module_writer + ) + module = compat.load_module(self.module_id, path) + del sys.modules[self.module_id] + ModuleInfo(module, path, self, filename, None, None, None) + else: + # template filename and no module directory, compile code + # in memory + data = util.read_file(filename) + code, module = _compile_text(self, data, filename) + self._source = None + self._code = code + ModuleInfo(module, None, self, filename, code, None, None) + return module + + @property + def source(self): + """Return the template source code for this :class:`.Template`.""" + + return _get_module_info_from_callable(self.callable_).source + + @property + def code(self): + """Return the module source code for this :class:`.Template`.""" + + return _get_module_info_from_callable(self.callable_).code + + @util.memoized_property + def cache(self): + return cache.Cache(self) + + @property + def cache_dir(self): + return self.cache_args["dir"] + + @property + def cache_url(self): + return self.cache_args["url"] + + @property + def cache_type(self): + return self.cache_args["type"] + + def render(self, *args, **data): + """Render the output of this template as a string. + + If the template specifies an output encoding, the string + will be encoded accordingly, else the output is raw (raw + output uses `cStringIO` and can't handle multibyte + characters). A :class:`.Context` object is created corresponding + to the given data. Arguments that are explicitly declared + by this template's internal rendering method are also + pulled from the given ``*args``, ``**data`` members. + + """ + return runtime._render(self, self.callable_, args, data) + + def render_unicode(self, *args, **data): + """Render the output of this template as a unicode object.""" + + return runtime._render( + self, self.callable_, args, data, as_unicode=True + ) + + def render_context(self, context, *args, **kwargs): + """Render this :class:`.Template` with the given context. + + The data is written to the context's buffer. + + """ + if getattr(context, "_with_template", None) is None: + context._set_with_template(self) + runtime._render_context(self, self.callable_, context, *args, **kwargs) + + def has_def(self, name): + return hasattr(self.module, "render_%s" % name) + + def get_def(self, name): + """Return a def of this template as a :class:`.DefTemplate`.""" + + return DefTemplate(self, getattr(self.module, "render_%s" % name)) + + def list_defs(self): + """return a list of defs in the template. + + .. versionadded:: 1.0.4 + + """ + return [i[7:] for i in dir(self.module) if i[:7] == "render_"] + + def _get_def_callable(self, name): + return getattr(self.module, "render_%s" % name) + + @property + def last_modified(self): + return self.module._modified_time + + +class ModuleTemplate(Template): + + """A Template which is constructed given an existing Python module. + + e.g.:: + + t = Template("this is a template") + f = file("mymodule.py", "w") + f.write(t.code) + f.close() + + import mymodule + + t = ModuleTemplate(mymodule) + print(t.render()) + + """ + + def __init__( + self, + module, + module_filename=None, + template=None, + template_filename=None, + module_source=None, + template_source=None, + output_encoding=None, + encoding_errors="strict", + disable_unicode=False, + bytestring_passthrough=False, + format_exceptions=False, + error_handler=None, + lookup=None, + cache_args=None, + cache_impl="beaker", + cache_enabled=True, + cache_type=None, + cache_dir=None, + cache_url=None, + include_error_handler=None, + ): + self.module_id = re.sub(r"\W", "_", module._template_uri) + self.uri = module._template_uri + self.input_encoding = module._source_encoding + self.output_encoding = output_encoding + self.encoding_errors = encoding_errors + self.disable_unicode = disable_unicode + self.bytestring_passthrough = bytestring_passthrough or disable_unicode + self.enable_loop = module._enable_loop + + if compat.py3k and disable_unicode: + raise exceptions.UnsupportedError( + "Mako for Python 3 does not " "support disabling Unicode" + ) + elif output_encoding and disable_unicode: + raise exceptions.UnsupportedError( + "output_encoding must be set to " + "None when disable_unicode is used." + ) + + self.module = module + self.filename = template_filename + ModuleInfo( + module, + module_filename, + self, + template_filename, + module_source, + template_source, + module._template_uri, + ) + + self.callable_ = self.module.render_body + self.format_exceptions = format_exceptions + self.error_handler = error_handler + self.include_error_handler = include_error_handler + self.lookup = lookup + self._setup_cache_args( + cache_impl, + cache_enabled, + cache_args, + cache_type, + cache_dir, + cache_url, + ) + + +class DefTemplate(Template): + + """A :class:`.Template` which represents a callable def in a parent + template.""" + + def __init__(self, parent, callable_): + self.parent = parent + self.callable_ = callable_ + self.output_encoding = parent.output_encoding + self.module = parent.module + self.encoding_errors = parent.encoding_errors + self.format_exceptions = parent.format_exceptions + self.error_handler = parent.error_handler + self.include_error_handler = parent.include_error_handler + self.enable_loop = parent.enable_loop + self.lookup = parent.lookup + self.bytestring_passthrough = parent.bytestring_passthrough + + def get_def(self, name): + return self.parent.get_def(name) + + +class ModuleInfo(object): + + """Stores information about a module currently loaded into + memory, provides reverse lookups of template source, module + source code based on a module's identifier. + + """ + + _modules = weakref.WeakValueDictionary() + + def __init__( + self, + module, + module_filename, + template, + template_filename, + module_source, + template_source, + template_uri, + ): + self.module = module + self.module_filename = module_filename + self.template_filename = template_filename + self.module_source = module_source + self.template_source = template_source + self.template_uri = template_uri + self._modules[module.__name__] = template._mmarker = self + if module_filename: + self._modules[module_filename] = self + + @classmethod + def get_module_source_metadata(cls, module_source, full_line_map=False): + source_map = re.search( + r"__M_BEGIN_METADATA(.+?)__M_END_METADATA", module_source, re.S + ).group(1) + source_map = json.loads(source_map) + source_map["line_map"] = dict( + (int(k), int(v)) for k, v in source_map["line_map"].items() + ) + if full_line_map: + f_line_map = source_map["full_line_map"] = [] + line_map = source_map["line_map"] + + curr_templ_line = 1 + for mod_line in range(1, max(line_map)): + if mod_line in line_map: + curr_templ_line = line_map[mod_line] + f_line_map.append(curr_templ_line) + return source_map + + @property + def code(self): + if self.module_source is not None: + return self.module_source + else: + return util.read_python_file(self.module_filename) + + @property + def source(self): + if self.template_source is not None: + if self.module._source_encoding and not isinstance( + self.template_source, compat.text_type + ): + return self.template_source.decode( + self.module._source_encoding + ) + else: + return self.template_source + else: + data = util.read_file(self.template_filename) + if self.module._source_encoding: + return data.decode(self.module._source_encoding) + else: + return data + + +def _compile(template, text, filename, generate_magic_comment): + lexer = template.lexer_cls( + text, + filename, + disable_unicode=template.disable_unicode, + input_encoding=template.input_encoding, + preprocessor=template.preprocessor, + ) + node = lexer.parse() + source = codegen.compile( + node, + template.uri, + filename, + default_filters=template.default_filters, + buffer_filters=template.buffer_filters, + imports=template.imports, + future_imports=template.future_imports, + source_encoding=lexer.encoding, + generate_magic_comment=generate_magic_comment, + disable_unicode=template.disable_unicode, + strict_undefined=template.strict_undefined, + enable_loop=template.enable_loop, + reserved_names=template.reserved_names, + ) + return source, lexer + + +def _compile_text(template, text, filename): + identifier = template.module_id + source, lexer = _compile( + template, + text, + filename, + generate_magic_comment=template.disable_unicode, + ) + + cid = identifier + if not compat.py3k and isinstance(cid, compat.text_type): + cid = cid.encode() + module = types.ModuleType(cid) + code = compile(source, cid, "exec") + + # this exec() works for 2.4->3.3. + exec(code, module.__dict__, module.__dict__) + return (source, module) + + +def _compile_module_file(template, text, filename, outputpath, module_writer): + source, lexer = _compile( + template, text, filename, generate_magic_comment=True + ) + + if isinstance(source, compat.text_type): + source = source.encode(lexer.encoding or "ascii") + + if module_writer: + module_writer(source, outputpath) + else: + # make tempfiles in the same location as the ultimate + # location. this ensures they're on the same filesystem, + # avoiding synchronization issues. + (dest, name) = tempfile.mkstemp(dir=os.path.dirname(outputpath)) + + os.write(dest, source) + os.close(dest) + shutil.move(name, outputpath) + + +def _get_module_info_from_callable(callable_): + if compat.py3k: + return _get_module_info(callable_.__globals__["__name__"]) + else: + return _get_module_info(callable_.func_globals["__name__"]) + + +def _get_module_info(filename): + return ModuleInfo._modules[filename] diff --git a/third_party/python/Mako/mako/util.py b/third_party/python/Mako/mako/util.py new file mode 100644 index 0000000000..16e3c72658 --- /dev/null +++ b/third_party/python/Mako/mako/util.py @@ -0,0 +1,400 @@ +# mako/util.py +# Copyright 2006-2020 the Mako authors and contributors <see AUTHORS file> +# +# This module is part of Mako and is released under +# the MIT License: http://www.opensource.org/licenses/mit-license.php +from __future__ import absolute_import + +from ast import parse +import codecs +import collections +import operator +import os +import re +import timeit + +from mako import compat + + +def update_wrapper(decorated, fn): + decorated.__wrapped__ = fn + decorated.__name__ = fn.__name__ + return decorated + + +class PluginLoader(object): + def __init__(self, group): + self.group = group + self.impls = {} + + def load(self, name): + if name in self.impls: + return self.impls[name]() + else: + import pkg_resources + + for impl in pkg_resources.iter_entry_points(self.group, name): + self.impls[name] = impl.load + return impl.load() + else: + from mako import exceptions + + raise exceptions.RuntimeException( + "Can't load plugin %s %s" % (self.group, name) + ) + + def register(self, name, modulepath, objname): + def load(): + mod = __import__(modulepath) + for token in modulepath.split(".")[1:]: + mod = getattr(mod, token) + return getattr(mod, objname) + + self.impls[name] = load + + +def verify_directory(dir_): + """create and/or verify a filesystem directory.""" + + tries = 0 + + while not os.path.exists(dir_): + try: + tries += 1 + os.makedirs(dir_, compat.octal("0775")) + except: + if tries > 5: + raise + + +def to_list(x, default=None): + if x is None: + return default + if not isinstance(x, (list, tuple)): + return [x] + else: + return x + + +class memoized_property(object): + + """A read-only @property that is only evaluated once.""" + + def __init__(self, fget, doc=None): + self.fget = fget + self.__doc__ = doc or fget.__doc__ + self.__name__ = fget.__name__ + + def __get__(self, obj, cls): + if obj is None: + return self + obj.__dict__[self.__name__] = result = self.fget(obj) + return result + + +class memoized_instancemethod(object): + + """Decorate a method memoize its return value. + + Best applied to no-arg methods: memoization is not sensitive to + argument values, and will always return the same value even when + called with different arguments. + + """ + + def __init__(self, fget, doc=None): + self.fget = fget + self.__doc__ = doc or fget.__doc__ + self.__name__ = fget.__name__ + + def __get__(self, obj, cls): + if obj is None: + return self + + def oneshot(*args, **kw): + result = self.fget(obj, *args, **kw) + + def memo(*a, **kw): + return result + + memo.__name__ = self.__name__ + memo.__doc__ = self.__doc__ + obj.__dict__[self.__name__] = memo + return result + + oneshot.__name__ = self.__name__ + oneshot.__doc__ = self.__doc__ + return oneshot + + +class SetLikeDict(dict): + + """a dictionary that has some setlike methods on it""" + + def union(self, other): + """produce a 'union' of this dict and another (at the key level). + + values in the second dict take precedence over that of the first""" + x = SetLikeDict(**self) + x.update(other) + return x + + +class FastEncodingBuffer(object): + + """a very rudimentary buffer that is faster than StringIO, + but doesn't crash on unicode data like cStringIO.""" + + def __init__(self, encoding=None, errors="strict", as_unicode=False): + self.data = collections.deque() + self.encoding = encoding + if as_unicode: + self.delim = compat.u("") + else: + self.delim = "" + self.as_unicode = as_unicode + self.errors = errors + self.write = self.data.append + + def truncate(self): + self.data = collections.deque() + self.write = self.data.append + + def getvalue(self): + if self.encoding: + return self.delim.join(self.data).encode( + self.encoding, self.errors + ) + else: + return self.delim.join(self.data) + + +class LRUCache(dict): + + """A dictionary-like object that stores a limited number of items, + discarding lesser used items periodically. + + this is a rewrite of LRUCache from Myghty to use a periodic timestamp-based + paradigm so that synchronization is not really needed. the size management + is inexact. + """ + + class _Item(object): + def __init__(self, key, value): + self.key = key + self.value = value + self.timestamp = timeit.default_timer() + + def __repr__(self): + return repr(self.value) + + def __init__(self, capacity, threshold=0.5): + self.capacity = capacity + self.threshold = threshold + + def __getitem__(self, key): + item = dict.__getitem__(self, key) + item.timestamp = timeit.default_timer() + return item.value + + def values(self): + return [i.value for i in dict.values(self)] + + def setdefault(self, key, value): + if key in self: + return self[key] + else: + self[key] = value + return value + + def __setitem__(self, key, value): + item = dict.get(self, key) + if item is None: + item = self._Item(key, value) + dict.__setitem__(self, key, item) + else: + item.value = value + self._manage_size() + + def _manage_size(self): + while len(self) > self.capacity + self.capacity * self.threshold: + bytime = sorted( + dict.values(self), + key=operator.attrgetter("timestamp"), + reverse=True, + ) + for item in bytime[self.capacity :]: + try: + del self[item.key] + except KeyError: + # if we couldn't find a key, most likely some other thread + # broke in on us. loop around and try again + break + + +# Regexp to match python magic encoding line +_PYTHON_MAGIC_COMMENT_re = re.compile( + r"[ \t\f]* \# .* coding[=:][ \t]*([-\w.]+)", re.VERBOSE +) + + +def parse_encoding(fp): + """Deduce the encoding of a Python source file (binary mode) from magic + comment. + + It does this in the same way as the `Python interpreter`__ + + .. __: http://docs.python.org/ref/encodings.html + + The ``fp`` argument should be a seekable file object in binary mode. + """ + pos = fp.tell() + fp.seek(0) + try: + line1 = fp.readline() + has_bom = line1.startswith(codecs.BOM_UTF8) + if has_bom: + line1 = line1[len(codecs.BOM_UTF8) :] + + m = _PYTHON_MAGIC_COMMENT_re.match(line1.decode("ascii", "ignore")) + if not m: + try: + parse(line1.decode("ascii", "ignore")) + except (ImportError, SyntaxError): + # Either it's a real syntax error, in which case the source + # is not valid python source, or line2 is a continuation of + # line1, in which case we don't want to scan line2 for a magic + # comment. + pass + else: + line2 = fp.readline() + m = _PYTHON_MAGIC_COMMENT_re.match( + line2.decode("ascii", "ignore") + ) + + if has_bom: + if m: + raise SyntaxError( + "python refuses to compile code with both a UTF8" + " byte-order-mark and a magic encoding comment" + ) + return "utf_8" + elif m: + return m.group(1) + else: + return None + finally: + fp.seek(pos) + + +def sorted_dict_repr(d): + """repr() a dictionary with the keys in order. + + Used by the lexer unit test to compare parse trees based on strings. + + """ + keys = list(d.keys()) + keys.sort() + return "{" + ", ".join(["%r: %r" % (k, d[k]) for k in keys]) + "}" + + +def restore__ast(_ast): + """Attempt to restore the required classes to the _ast module if it + appears to be missing them + """ + if hasattr(_ast, "AST"): + return + _ast.PyCF_ONLY_AST = 2 << 9 + m = compile( + """\ +def foo(): pass +class Bar(object): pass +if False: pass +baz = 'mako' +1 + 2 - 3 * 4 / 5 +6 // 7 % 8 << 9 >> 10 +11 & 12 ^ 13 | 14 +15 and 16 or 17 +-baz + (not +18) - ~17 +baz and 'foo' or 'bar' +(mako is baz == baz) is not baz != mako +mako > baz < mako >= baz <= mako +mako in baz not in mako""", + "<unknown>", + "exec", + _ast.PyCF_ONLY_AST, + ) + _ast.Module = type(m) + + for cls in _ast.Module.__mro__: + if cls.__name__ == "mod": + _ast.mod = cls + elif cls.__name__ == "AST": + _ast.AST = cls + + _ast.FunctionDef = type(m.body[0]) + _ast.ClassDef = type(m.body[1]) + _ast.If = type(m.body[2]) + + _ast.Name = type(m.body[3].targets[0]) + _ast.Store = type(m.body[3].targets[0].ctx) + _ast.Str = type(m.body[3].value) + + _ast.Sub = type(m.body[4].value.op) + _ast.Add = type(m.body[4].value.left.op) + _ast.Div = type(m.body[4].value.right.op) + _ast.Mult = type(m.body[4].value.right.left.op) + + _ast.RShift = type(m.body[5].value.op) + _ast.LShift = type(m.body[5].value.left.op) + _ast.Mod = type(m.body[5].value.left.left.op) + _ast.FloorDiv = type(m.body[5].value.left.left.left.op) + + _ast.BitOr = type(m.body[6].value.op) + _ast.BitXor = type(m.body[6].value.left.op) + _ast.BitAnd = type(m.body[6].value.left.left.op) + + _ast.Or = type(m.body[7].value.op) + _ast.And = type(m.body[7].value.values[0].op) + + _ast.Invert = type(m.body[8].value.right.op) + _ast.Not = type(m.body[8].value.left.right.op) + _ast.UAdd = type(m.body[8].value.left.right.operand.op) + _ast.USub = type(m.body[8].value.left.left.op) + + _ast.Or = type(m.body[9].value.op) + _ast.And = type(m.body[9].value.values[0].op) + + _ast.IsNot = type(m.body[10].value.ops[0]) + _ast.NotEq = type(m.body[10].value.ops[1]) + _ast.Is = type(m.body[10].value.left.ops[0]) + _ast.Eq = type(m.body[10].value.left.ops[1]) + + _ast.Gt = type(m.body[11].value.ops[0]) + _ast.Lt = type(m.body[11].value.ops[1]) + _ast.GtE = type(m.body[11].value.ops[2]) + _ast.LtE = type(m.body[11].value.ops[3]) + + _ast.In = type(m.body[12].value.ops[0]) + _ast.NotIn = type(m.body[12].value.ops[1]) + + +def read_file(path, mode="rb"): + fp = open(path, mode) + try: + data = fp.read() + return data + finally: + fp.close() + + +def read_python_file(path): + fp = open(path, "rb") + try: + encoding = parse_encoding(fp) + data = fp.read() + if encoding: + data = data.decode(encoding) + return data + finally: + fp.close() |