81 lines
3.1 KiB
Python
81 lines
3.1 KiB
Python
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"""
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pygments.lexers.comal
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~~~~~~~~~~~~~~~~~~~~~
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Lexer for COMAL-80.
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:copyright: Copyright 2006-2022 by the Pygments team, see AUTHORS.
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:license: BSD, see LICENSE for details.
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"""
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import re
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from pygments.lexer import RegexLexer, words
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from pygments.token import Comment, Whitespace, Operator, Keyword, String, \
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Number, Name, Punctuation
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__all__ = ["Comal80Lexer"]
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class Comal80Lexer(RegexLexer):
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"""
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For COMAL-80 source code.
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"""
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name = 'COMAL-80'
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url = 'https://en.wikipedia.org/wiki/COMAL'
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aliases = ['comal', 'comal80']
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filenames = ['*.cml', '*.comal']
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flags = re.IGNORECASE
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#
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# COMAL allows for some strange characters in names which we list here so
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# keywords and word operators will not be recognized at the start of an
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# identifier.
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#
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_suffix = r"\b(?!['\[\]←£\\])"
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_identifier = r"[a-z]['\[\]←£\\\w]*"
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tokens = {
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'root': [
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(r'//.*\n', Comment.Single),
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(r'\s+', Whitespace),
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(r':[=+-]|\<\>|[-+*/^↑<>=]', Operator),
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(r'(and +then|or +else)' + _suffix, Operator.Word),
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(words([
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'and', 'bitand', 'bitor', 'bitxor', 'div', 'in', 'mod', 'not',
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'or'], suffix=_suffix,), Operator.Word),
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(words([
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'append', 'at', 'case', 'chain', 'close', 'copy', 'create', 'cursor',
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'data', 'delete', 'dir', 'do', 'elif', 'else', 'end', 'endcase', 'endif',
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'endfor', 'endloop', 'endtrap', 'endwhile', 'exec', 'exit', 'file',
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'for', 'goto', 'handler', 'if', 'input', 'let', 'loop', 'mount', 'null',
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'of', 'open', 'otherwise', 'output', 'page', 'pass', 'poke', 'print',
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'random', 'read', 'repeat', 'report', 'return', 'rename', 'restore',
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'select', 'step', 'stop', 'sys', 'then', 'to', 'trap', 'unit', 'unit$',
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'until', 'using', 'when', 'while', 'write', 'zone'], suffix=_suffix),
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Keyword.Reserved),
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(words([
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'closed', 'dim', 'endfunc', 'endproc', 'external', 'func', 'import',
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'proc', 'ref', 'use'], suffix=_suffix), Keyword.Declaration),
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(words([
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'abs', 'atn', 'chr$', 'cos', 'eod', 'eof', 'err', 'errfile', 'errtext',
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'esc', 'exp', 'int', 'key$', 'len', 'log', 'ord', 'peek', 'randomize',
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'rnd', 'sgn', 'sin', 'spc$', 'sqr', 'status$', 'str$', 'tab', 'tan',
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'time', 'val'], suffix=_suffix), Name.Builtin),
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(words(['false', 'pi', 'true'], suffix=_suffix), Keyword.Constant),
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(r'"', String, 'string'),
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(_identifier + r":(?=[ \n/])", Name.Label),
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(_identifier + r"[$#]?", Name),
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(r'%[01]+', Number.Bin),
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(r'\$[0-9a-f]+', Number.Hex),
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(r'\d*\.\d*(e[-+]?\d+)?', Number.Float),
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(r'\d+', Number.Integer),
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(r'[(),:;]', Punctuation),
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],
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'string': [
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(r'[^"]+', String),
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(r'"[0-9]*"', String.Escape),
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(r'"', String, '#pop'),
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],
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}
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