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"""
pygments.lexers.comal
~~~~~~~~~~~~~~~~~~~~~
Lexer for COMAL-80.
:copyright: Copyright 2006-2023 by the Pygments team, see AUTHORS.
:license: BSD, see LICENSE for details.
"""
import re
from pygments.lexer import RegexLexer, words
from pygments.token import Comment, Whitespace, Operator, Keyword, String, \
Number, Name, Punctuation
__all__ = ["Comal80Lexer"]
class Comal80Lexer(RegexLexer):
"""
For COMAL-80 source code.
"""
name = 'COMAL-80'
url = 'https://en.wikipedia.org/wiki/COMAL'
aliases = ['comal', 'comal80']
filenames = ['*.cml', '*.comal']
flags = re.IGNORECASE
#
# COMAL allows for some strange characters in names which we list here so
# keywords and word operators will not be recognized at the start of an
# identifier.
#
_suffix = r"\b(?!['\[\]←£\\])"
_identifier = r"[a-z]['\[\]←£\\\w]*"
tokens = {
'root': [
(r'//.*\n', Comment.Single),
(r'\s+', Whitespace),
(r':[=+-]|\<\>|[-+*/^↑<>=]', Operator),
(r'(and +then|or +else)' + _suffix, Operator.Word),
(words([
'and', 'bitand', 'bitor', 'bitxor', 'div', 'in', 'mod', 'not',
'or'], suffix=_suffix,), Operator.Word),
(words([
'append', 'at', 'case', 'chain', 'close', 'copy', 'create', 'cursor',
'data', 'delete', 'dir', 'do', 'elif', 'else', 'end', 'endcase', 'endif',
'endfor', 'endloop', 'endtrap', 'endwhile', 'exec', 'exit', 'file',
'for', 'goto', 'handler', 'if', 'input', 'let', 'loop', 'mount', 'null',
'of', 'open', 'otherwise', 'output', 'page', 'pass', 'poke', 'print',
'random', 'read', 'repeat', 'report', 'return', 'rename', 'restore',
'select', 'step', 'stop', 'sys', 'then', 'to', 'trap', 'unit', 'unit$',
'until', 'using', 'when', 'while', 'write', 'zone'], suffix=_suffix),
Keyword.Reserved),
(words([
'closed', 'dim', 'endfunc', 'endproc', 'external', 'func', 'import',
'proc', 'ref', 'use'], suffix=_suffix), Keyword.Declaration),
(words([
'abs', 'atn', 'chr$', 'cos', 'eod', 'eof', 'err', 'errfile', 'errtext',
'esc', 'exp', 'int', 'key$', 'len', 'log', 'ord', 'peek', 'randomize',
'rnd', 'sgn', 'sin', 'spc$', 'sqr', 'status$', 'str$', 'tab', 'tan',
'time', 'val'], suffix=_suffix), Name.Builtin),
(words(['false', 'pi', 'true'], suffix=_suffix), Keyword.Constant),
(r'"', String, 'string'),
(_identifier + r":(?=[ \n/])", Name.Label),
(_identifier + r"[$#]?", Name),
(r'%[01]+', Number.Bin),
(r'\$[0-9a-f]+', Number.Hex),
(r'\d*\.\d*(e[-+]?\d+)?', Number.Float),
(r'\d+', Number.Integer),
(r'[(),:;]', Punctuation),
],
'string': [
(r'[^"]+', String),
(r'"[0-9]*"', String.Escape),
(r'"', String, '#pop'),
],
}
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