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diff --git a/runtime/syntax/python.vim b/runtime/syntax/python.vim new file mode 100644 index 0000000..7aa82f1 --- /dev/null +++ b/runtime/syntax/python.vim @@ -0,0 +1,340 @@ +" Vim syntax file +" Language: Python +" Maintainer: Zvezdan Petkovic <zpetkovic@acm.org> +" Last Change: 2023 Feb 28 +" Credits: Neil Schemenauer <nas@python.ca> +" Dmitry Vasiliev +" +" This version is a major rewrite by Zvezdan Petkovic. +" +" - introduced highlighting of doctests +" - updated keywords, built-ins, and exceptions +" - corrected regular expressions for +" +" * functions +" * decorators +" * strings +" * escapes +" * numbers +" * space error +" +" - corrected synchronization +" - more highlighting is ON by default, except +" - space error highlighting is OFF by default +" +" Optional highlighting can be controlled using these variables. +" +" let python_no_builtin_highlight = 1 +" let python_no_doctest_code_highlight = 1 +" let python_no_doctest_highlight = 1 +" let python_no_exception_highlight = 1 +" let python_no_number_highlight = 1 +" let python_space_error_highlight = 1 +" +" All the options above can be switched on together. +" +" let python_highlight_all = 1 +" +" The use of Python 2 compatible syntax highlighting can be enforced. +" The straddling code (Python 2 and 3 compatible), up to Python 3.5, +" will be also supported. +" +" let python_use_python2_syntax = 1 +" +" This option will exclude all modern Python 3.6 or higher features. +" + +" quit when a syntax file was already loaded. +if exists("b:current_syntax") + finish +endif + +" Use of Python 2 and 3.5 or lower requested. +if exists("python_use_python2_syntax") + runtime! syntax/python2.vim + finish +endif + +" We need nocompatible mode in order to continue lines with backslashes. +" Original setting will be restored. +let s:cpo_save = &cpo +set cpo&vim + +if exists("python_no_doctest_highlight") + let python_no_doctest_code_highlight = 1 +endif + +if exists("python_highlight_all") + if exists("python_no_builtin_highlight") + unlet python_no_builtin_highlight + endif + if exists("python_no_doctest_code_highlight") + unlet python_no_doctest_code_highlight + endif + if exists("python_no_doctest_highlight") + unlet python_no_doctest_highlight + endif + if exists("python_no_exception_highlight") + unlet python_no_exception_highlight + endif + if exists("python_no_number_highlight") + unlet python_no_number_highlight + endif + let python_space_error_highlight = 1 +endif + +" Keep Python keywords in alphabetical order inside groups for easy +" comparison with the table in the 'Python Language Reference' +" https://docs.python.org/reference/lexical_analysis.html#keywords. +" Groups are in the order presented in NAMING CONVENTIONS in syntax.txt. +" Exceptions come last at the end of each group (class and def below). +" +" The list can be checked using: +" +" python3 -c 'import keyword, pprint; pprint.pprint(keyword.kwlist + keyword.softkwlist, compact=True)' +" +syn keyword pythonStatement False None True +syn keyword pythonStatement as assert break continue del global +syn keyword pythonStatement lambda nonlocal pass return with yield +syn keyword pythonStatement class def nextgroup=pythonFunction skipwhite +syn keyword pythonConditional elif else if +syn keyword pythonRepeat for while +syn keyword pythonOperator and in is not or +syn keyword pythonException except finally raise try +syn keyword pythonInclude from import +syn keyword pythonAsync async await + +" Soft keywords +" These keywords do not mean anything unless used in the right context. +" See https://docs.python.org/3/reference/lexical_analysis.html#soft-keywords +" for more on this. +syn match pythonConditional "^\s*\zscase\%(\s\+.*:.*$\)\@=" +syn match pythonConditional "^\s*\zsmatch\%(\s\+.*:\s*\%(#.*\)\=$\)\@=" + +" Decorators +" A dot must be allowed because of @MyClass.myfunc decorators. +syn match pythonDecorator "@" display contained +syn match pythonDecoratorName "@\s*\h\%(\w\|\.\)*" display contains=pythonDecorator + +" Python 3.5 introduced the use of the same symbol for matrix multiplication: +" https://www.python.org/dev/peps/pep-0465/. We now have to exclude the +" symbol from highlighting when used in that context. +" Single line multiplication. +syn match pythonMatrixMultiply + \ "\%(\w\|[])]\)\s*@" + \ contains=ALLBUT,pythonDecoratorName,pythonDecorator,pythonFunction,pythonDoctestValue + \ transparent +" Multiplication continued on the next line after backslash. +syn match pythonMatrixMultiply + \ "[^\\]\\\s*\n\%(\s*\.\.\.\s\)\=\s\+@" + \ contains=ALLBUT,pythonDecoratorName,pythonDecorator,pythonFunction,pythonDoctestValue + \ transparent +" Multiplication in a parenthesized expression over multiple lines with @ at +" the start of each continued line; very similar to decorators and complex. +syn match pythonMatrixMultiply + \ "^\s*\%(\%(>>>\|\.\.\.\)\s\+\)\=\zs\%(\h\|\%(\h\|[[(]\).\{-}\%(\w\|[])]\)\)\s*\n\%(\s*\.\.\.\s\)\=\s\+@\%(.\{-}\n\%(\s*\.\.\.\s\)\=\s\+@\)*" + \ contains=ALLBUT,pythonDecoratorName,pythonDecorator,pythonFunction,pythonDoctestValue + \ transparent + +syn match pythonFunction "\h\w*" display contained + +syn match pythonComment "#.*$" contains=pythonTodo,@Spell +syn keyword pythonTodo FIXME NOTE NOTES TODO XXX contained + +" Triple-quoted strings can contain doctests. +syn region pythonString matchgroup=pythonQuotes + \ start=+[uU]\=\z(['"]\)+ end="\z1" skip="\\\\\|\\\z1" + \ contains=pythonEscape,@Spell +syn region pythonString matchgroup=pythonTripleQuotes + \ start=+[uU]\=\z('''\|"""\)+ end="\z1" keepend + \ contains=pythonEscape,pythonSpaceError,pythonDoctest,@Spell +syn region pythonRawString matchgroup=pythonQuotes + \ start=+[uU]\=[rR]\z(['"]\)+ end="\z1" skip="\\\\\|\\\z1" + \ contains=@Spell +syn region pythonRawString matchgroup=pythonTripleQuotes + \ start=+[uU]\=[rR]\z('''\|"""\)+ end="\z1" keepend + \ contains=pythonSpaceError,pythonDoctest,@Spell + +syn match pythonEscape +\\[abfnrtv'"\\]+ contained +syn match pythonEscape "\\\o\{1,3}" contained +syn match pythonEscape "\\x\x\{2}" contained +syn match pythonEscape "\%(\\u\x\{4}\|\\U\x\{8}\)" contained +" Python allows case-insensitive Unicode IDs: http://www.unicode.org/charts/ +syn match pythonEscape "\\N{\a\+\%(\s\a\+\)*}" contained +syn match pythonEscape "\\$" + +" It is very important to understand all details before changing the +" regular expressions below or their order. +" The word boundaries are *not* the floating-point number boundaries +" because of a possible leading or trailing decimal point. +" The expressions below ensure that all valid number literals are +" highlighted, and invalid number literals are not. For example, +" +" - a decimal point in '4.' at the end of a line is highlighted, +" - a second dot in 1.0.0 is not highlighted, +" - 08 is not highlighted, +" - 08e0 or 08j are highlighted, +" +" and so on, as specified in the 'Python Language Reference'. +" https://docs.python.org/reference/lexical_analysis.html#numeric-literals +if !exists("python_no_number_highlight") + " numbers (including complex) + syn match pythonNumber "\<0[oO]\%(_\=\o\)\+\>" + syn match pythonNumber "\<0[xX]\%(_\=\x\)\+\>" + syn match pythonNumber "\<0[bB]\%(_\=[01]\)\+\>" + syn match pythonNumber "\<\%([1-9]\%(_\=\d\)*\|0\+\%(_\=0\)*\)\>" + syn match pythonNumber "\<\d\%(_\=\d\)*[jJ]\>" + syn match pythonNumber "\<\d\%(_\=\d\)*[eE][+-]\=\d\%(_\=\d\)*[jJ]\=\>" + syn match pythonNumber + \ "\<\d\%(_\=\d\)*\.\%([eE][+-]\=\d\%(_\=\d\)*\)\=[jJ]\=\%(\W\|$\)\@=" + syn match pythonNumber + \ "\%(^\|\W\)\zs\%(\d\%(_\=\d\)*\)\=\.\d\%(_\=\d\)*\%([eE][+-]\=\d\%(_\=\d\)*\)\=[jJ]\=\>" +endif + +" Group the built-ins in the order in the 'Python Library Reference' for +" easier comparison. +" https://docs.python.org/library/constants.html +" http://docs.python.org/library/functions.html +" Python built-in functions are in alphabetical order. +" +" The list can be checked using: +" +" python3 -c 'import builtins, pprint; pprint.pprint(dir(builtins), compact=True)' +" +" The constants added by the `site` module are not listed below because they +" should not be used in programs, only in interactive interpreter. +" Similarly for some other attributes and functions `__`-enclosed from the +" output of the above command. +" +if !exists("python_no_builtin_highlight") + " built-in constants + " 'False', 'True', and 'None' are also reserved words in Python 3 + syn keyword pythonBuiltin False True None + syn keyword pythonBuiltin NotImplemented Ellipsis __debug__ + " constants added by the `site` module + syn keyword pythonBuiltin quit exit copyright credits license + " built-in functions + syn keyword pythonBuiltin abs all any ascii bin bool breakpoint bytearray + syn keyword pythonBuiltin bytes callable chr classmethod compile complex + syn keyword pythonBuiltin delattr dict dir divmod enumerate eval exec + syn keyword pythonBuiltin filter float format frozenset getattr globals + syn keyword pythonBuiltin hasattr hash help hex id input int isinstance + syn keyword pythonBuiltin issubclass iter len list locals map max + syn keyword pythonBuiltin memoryview min next object oct open ord pow + syn keyword pythonBuiltin print property range repr reversed round set + syn keyword pythonBuiltin setattr slice sorted staticmethod str sum super + syn keyword pythonBuiltin tuple type vars zip __import__ + " avoid highlighting attributes as builtins + syn match pythonAttribute /\.\h\w*/hs=s+1 + \ contains=ALLBUT,pythonBuiltin,pythonFunction,pythonAsync + \ transparent +endif + +" From the 'Python Library Reference' class hierarchy at the bottom. +" http://docs.python.org/library/exceptions.html +if !exists("python_no_exception_highlight") + " builtin base exceptions (used mostly as base classes for other exceptions) + syn keyword pythonExceptions BaseException Exception + syn keyword pythonExceptions ArithmeticError BufferError LookupError + " builtin exceptions (actually raised) + syn keyword pythonExceptions AssertionError AttributeError EOFError + syn keyword pythonExceptions FloatingPointError GeneratorExit ImportError + syn keyword pythonExceptions IndentationError IndexError KeyError + syn keyword pythonExceptions KeyboardInterrupt MemoryError + syn keyword pythonExceptions ModuleNotFoundError NameError + syn keyword pythonExceptions NotImplementedError OSError OverflowError + syn keyword pythonExceptions RecursionError ReferenceError RuntimeError + syn keyword pythonExceptions StopAsyncIteration StopIteration SyntaxError + syn keyword pythonExceptions SystemError SystemExit TabError TypeError + syn keyword pythonExceptions UnboundLocalError UnicodeDecodeError + syn keyword pythonExceptions UnicodeEncodeError UnicodeError + syn keyword pythonExceptions UnicodeTranslateError ValueError + syn keyword pythonExceptions ZeroDivisionError + " builtin exception aliases for OSError + syn keyword pythonExceptions EnvironmentError IOError WindowsError + " builtin OS exceptions in Python 3 + syn keyword pythonExceptions BlockingIOError BrokenPipeError + syn keyword pythonExceptions ChildProcessError ConnectionAbortedError + syn keyword pythonExceptions ConnectionError ConnectionRefusedError + syn keyword pythonExceptions ConnectionResetError FileExistsError + syn keyword pythonExceptions FileNotFoundError InterruptedError + syn keyword pythonExceptions IsADirectoryError NotADirectoryError + syn keyword pythonExceptions PermissionError ProcessLookupError TimeoutError + " builtin warnings + syn keyword pythonExceptions BytesWarning DeprecationWarning FutureWarning + syn keyword pythonExceptions ImportWarning PendingDeprecationWarning + syn keyword pythonExceptions ResourceWarning RuntimeWarning + syn keyword pythonExceptions SyntaxWarning UnicodeWarning + syn keyword pythonExceptions UserWarning Warning +endif + +if exists("python_space_error_highlight") + " trailing whitespace + syn match pythonSpaceError display excludenl "\s\+$" + " mixed tabs and spaces + syn match pythonSpaceError display " \+\t" + syn match pythonSpaceError display "\t\+ " +endif + +" Do not spell doctests inside strings. +" Notice that the end of a string, either ''', or """, will end the contained +" doctest too. Thus, we do *not* need to have it as an end pattern. +if !exists("python_no_doctest_highlight") + if !exists("python_no_doctest_code_highlight") + syn region pythonDoctest + \ start="^\s*>>>\s" end="^\s*$" + \ contained contains=ALLBUT,pythonDoctest,pythonFunction,@Spell + syn region pythonDoctestValue + \ start=+^\s*\%(>>>\s\|\.\.\.\s\|"""\|'''\)\@!\S\++ end="$" + \ contained + else + syn region pythonDoctest + \ start="^\s*>>>" end="^\s*$" + \ contained contains=@NoSpell + endif +endif + +" Sync at the beginning of class, function, or method definition. +syn sync match pythonSync grouphere NONE "^\%(def\|class\)\s\+\h\w*\s*[(:]" + +" The default highlight links. Can be overridden later. +hi def link pythonStatement Statement +hi def link pythonConditional Conditional +hi def link pythonRepeat Repeat +hi def link pythonOperator Operator +hi def link pythonException Exception +hi def link pythonInclude Include +hi def link pythonAsync Statement +hi def link pythonDecorator Define +hi def link pythonDecoratorName Function +hi def link pythonFunction Function +hi def link pythonComment Comment +hi def link pythonTodo Todo +hi def link pythonString String +hi def link pythonRawString String +hi def link pythonQuotes String +hi def link pythonTripleQuotes pythonQuotes +hi def link pythonEscape Special +if !exists("python_no_number_highlight") + hi def link pythonNumber Number +endif +if !exists("python_no_builtin_highlight") + hi def link pythonBuiltin Function +endif +if !exists("python_no_exception_highlight") + hi def link pythonExceptions Structure +endif +if exists("python_space_error_highlight") + hi def link pythonSpaceError Error +endif +if !exists("python_no_doctest_highlight") + hi def link pythonDoctest Special + hi def link pythonDoctestValue Define +endif + +let b:current_syntax = "python" + +let &cpo = s:cpo_save +unlet s:cpo_save + +" vim:set sw=2 sts=2 ts=8 noet: |