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# -*- coding: utf-8 -*-
"""
pygments.lexers.parasail
~~~~~~~~~~~~~~~~~~~~~~~~
Lexer for ParaSail.
:copyright: Copyright 2006-2017 by the Pygments team, see AUTHORS.
:license: BSD, see LICENSE for details.
"""
import re
from pygments.lexer import RegexLexer, include
from pygments.token import Text, Comment, Operator, Keyword, Name, String, \
Number, Punctuation, Literal
__all__ = ['ParaSailLexer']
class ParaSailLexer(RegexLexer):
"""
For `ParaSail <http://www.parasail-lang.org>`_ source code.
.. versionadded:: 2.1
"""
name = 'ParaSail'
aliases = ['parasail']
filenames = ['*.psi', '*.psl']
mimetypes = ['text/x-parasail']
flags = re.MULTILINE
tokens = {
'root': [
(r'[^\S\n]+', Text),
(r'//.*?\n', Comment.Single),
(r'\b(and|or|xor)=', Operator.Word),
(r'\b(and(\s+then)?|or(\s+else)?|xor|rem|mod|'
r'(is|not)\s+null)\b',
Operator.Word),
# Keywords
(r'\b(abs|abstract|all|block|class|concurrent|const|continue|'
r'each|end|exit|extends|exports|forward|func|global|implements|'
r'import|in|interface|is|lambda|locked|new|not|null|of|op|'
r'optional|private|queued|ref|return|reverse|separate|some|'
r'type|until|var|with|'
# Control flow
r'if|then|else|elsif|case|for|while|loop)\b',
Keyword.Reserved),
(r'(abstract\s+)?(interface|class|op|func|type)',
Keyword.Declaration),
# Literals
(r'"[^"]*"', String),
(r'\\[\'ntrf"0]', String.Escape),
(r'#[a-zA-Z]\w*', Literal), # Enumeration
include('numbers'),
(r"'[^']'", String.Char),
(r'[a-zA-Z]\w*', Name),
# Operators and Punctuation
(r'(<==|==>|<=>|\*\*=|<\|=|<<=|>>=|==|!=|=\?|<=|>=|'
r'\*\*|<<|>>|=>|:=|\+=|-=|\*=|\|=|\||/=|\+|-|\*|/|'
r'\.\.|<\.\.|\.\.<|<\.\.<)',
Operator),
(r'(<|>|\[|\]|\(|\)|\||:|;|,|.|\{|\}|->)',
Punctuation),
(r'\n+', Text),
],
'numbers': [
(r'\d[0-9_]*#[0-9a-fA-F][0-9a-fA-F_]*#', Number.Hex), # any base
(r'0[xX][0-9a-fA-F][0-9a-fA-F_]*', Number.Hex), # C-like hex
(r'0[bB][01][01_]*', Number.Bin), # C-like bin
(r'\d[0-9_]*\.\d[0-9_]*[eE][+-]\d[0-9_]*', # float exp
Number.Float),
(r'\d[0-9_]*\.\d[0-9_]*', Number.Float), # float
(r'\d[0-9_]*', Number.Integer), # integer
],
}
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