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152 lines
4.7 KiB
Python
152 lines
4.7 KiB
Python
"""
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pygments.lexers.j
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~~~~~~~~~~~~~~~~~
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Lexer for the J programming language.
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:copyright: Copyright 2006-2024 by the Pygments team, see AUTHORS.
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:license: BSD, see LICENSE for details.
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"""
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from pygments.lexer import RegexLexer, words, include, bygroups
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from pygments.token import Comment, Keyword, Name, Number, Operator, \
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Punctuation, String, Whitespace
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__all__ = ['JLexer']
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class JLexer(RegexLexer):
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"""
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For J source code.
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"""
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name = 'J'
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url = 'http://jsoftware.com/'
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aliases = ['j']
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filenames = ['*.ijs']
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mimetypes = ['text/x-j']
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version_added = '2.1'
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validName = r'\b[a-zA-Z]\w*'
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tokens = {
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'root': [
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# Shebang script
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(r'#!.*$', Comment.Preproc),
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# Comments
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(r'NB\..*', Comment.Single),
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(r'(\n+\s*)(Note)', bygroups(Whitespace, Comment.Multiline),
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'comment'),
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(r'(\s*)(Note.*)', bygroups(Whitespace, Comment.Single)),
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# Whitespace
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(r'\s+', Whitespace),
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# Strings
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(r"'", String, 'singlequote'),
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# Definitions
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(r'0\s+:\s*0', Name.Entity, 'nounDefinition'),
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(r'(noun)(\s+)(define)(\s*)$', bygroups(Name.Entity, Whitespace,
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Name.Entity, Whitespace), 'nounDefinition'),
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(r'([1-4]|13)\s+:\s*0\b',
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Name.Function, 'explicitDefinition'),
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(r'(adverb|conjunction|dyad|monad|verb)(\s+)(define)\b',
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bygroups(Name.Function, Whitespace, Name.Function),
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'explicitDefinition'),
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# Flow Control
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(words(('for_', 'goto_', 'label_'), suffix=validName+r'\.'), Name.Label),
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(words((
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'assert', 'break', 'case', 'catch', 'catchd',
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'catcht', 'continue', 'do', 'else', 'elseif',
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'end', 'fcase', 'for', 'if', 'return',
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'select', 'throw', 'try', 'while', 'whilst',
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), suffix=r'\.'), Name.Label),
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# Variable Names
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(validName, Name.Variable),
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# Standard Library
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(words((
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'ARGV', 'CR', 'CRLF', 'DEL', 'Debug',
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'EAV', 'EMPTY', 'FF', 'JVERSION', 'LF',
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'LF2', 'Note', 'TAB', 'alpha17', 'alpha27',
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'apply', 'bind', 'boxopen', 'boxxopen', 'bx',
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'clear', 'cutLF', 'cutopen', 'datatype', 'def',
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'dfh', 'drop', 'each', 'echo', 'empty',
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'erase', 'every', 'evtloop', 'exit', 'expand',
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'fetch', 'file2url', 'fixdotdot', 'fliprgb', 'getargs',
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'getenv', 'hfd', 'inv', 'inverse', 'iospath',
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'isatty', 'isutf8', 'items', 'leaf', 'list',
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'nameclass', 'namelist', 'names', 'nc',
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'nl', 'on', 'pick', 'rows',
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'script', 'scriptd', 'sign', 'sminfo', 'smoutput',
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'sort', 'split', 'stderr', 'stdin', 'stdout',
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'table', 'take', 'timespacex', 'timex', 'tmoutput',
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'toCRLF', 'toHOST', 'toJ', 'tolower', 'toupper',
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'type', 'ucp', 'ucpcount', 'usleep', 'utf8',
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'uucp',
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)), Name.Function),
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# Copula
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(r'=[.:]', Operator),
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# Builtins
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(r'[-=+*#$%@!~`^&";:.,<>{}\[\]\\|/?]', Operator),
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# Short Keywords
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(r'[abCdDeEfHiIjLMoprtT]\.', Keyword.Reserved),
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(r'[aDiLpqsStux]\:', Keyword.Reserved),
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(r'(_[0-9])\:', Keyword.Constant),
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# Parens
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(r'\(', Punctuation, 'parentheses'),
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# Numbers
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include('numbers'),
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],
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'comment': [
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(r'[^)]', Comment.Multiline),
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(r'^\)', Comment.Multiline, '#pop'),
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(r'[)]', Comment.Multiline),
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],
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'explicitDefinition': [
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(r'\b[nmuvxy]\b', Name.Decorator),
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include('root'),
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(r'[^)]', Name),
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(r'^\)', Name.Label, '#pop'),
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(r'[)]', Name),
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],
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'numbers': [
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(r'\b_{1,2}\b', Number),
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(r'_?\d+(\.\d+)?(\s*[ejr]\s*)_?\d+(\.?=\d+)?', Number),
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(r'_?\d+\.(?=\d+)', Number.Float),
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(r'_?\d+x', Number.Integer.Long),
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(r'_?\d+', Number.Integer),
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],
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'nounDefinition': [
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(r'[^)]+', String),
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(r'^\)', Name.Label, '#pop'),
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(r'[)]', String),
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],
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'parentheses': [
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(r'\)', Punctuation, '#pop'),
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# include('nounDefinition'),
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include('explicitDefinition'),
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include('root'),
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],
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'singlequote': [
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(r"[^']+", String),
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(r"''", String),
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(r"'", String, '#pop'),
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],
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}
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