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# -*- coding: utf-8 -*-
"""
pygments.lexers.inferno
~~~~~~~~~~~~~~~~~~~~~~~
Lexers for Inferno os and all the related stuff.
:copyright: Copyright 2006-2015 by the Pygments team, see AUTHORS.
:license: BSD, see LICENSE for details.
"""
import re
from pygments.lexer import RegexLexer, include, bygroups, default
from pygments.token import Punctuation, Text, Comment, Operator, Keyword, \
Name, String, Number
__all__ = ['LimboLexer']
class LimboLexer(RegexLexer):
"""
Lexer for `Limbo programming language <http://www.vitanuova.com/inferno/limbo.html>`_
TODO:
- maybe implement better var declaration highlighting
- some simple syntax error highlighting
.. versionadded:: 2.0
"""
name = 'Limbo'
aliases = ['limbo']
filenames = ['*.b']
mimetypes = ['text/limbo']
tokens = {
'whitespace': [
(r'^(\s*)([a-zA-Z_]\w*:(\s*)\n)',
bygroups(Text, Name.Label)),
(r'\n', Text),
(r'\s+', Text),
(r'#(\n|(.|\n)*?[^\\]\n)', Comment.Single),
],
'string': [
(r'"', String, '#pop'),
(r'\\([\\abfnrtv"\']|x[a-fA-F0-9]{2,4}|'
r'u[a-fA-F0-9]{4}|U[a-fA-F0-9]{8}|[0-7]{1,3})', String.Escape),
(r'[^\\"\n]+', String), # all other characters
(r'\\', String), # stray backslash
],
'statements': [
(r'"', String, 'string'),
(r"'(\\.|\\[0-7]{1,3}|\\x[a-fA-F0-9]{1,2}|[^\\\'\n])'", String.Char),
(r'(\d+\.\d*|\.\d+|\d+)[eE][+-]?\d+', Number.Float),
(r'(\d+\.\d*|\.\d+|\d+[fF])', Number.Float),
(r'16r[0-9a-fA-F]+', Number.Hex),
(r'8r[0-7]+', Number.Oct),
(r'((([1-3]\d)|([2-9]))r)?(\d+)', Number.Integer),
(r'[()\[\],.]', Punctuation),
(r'[~!%^&*+=|?:<>/-]|(->)|(<-)|(=>)|(::)', Operator),
(r'(alt|break|case|continue|cyclic|do|else|exit'
r'for|hd|if|implement|import|include|len|load|or'
r'pick|return|spawn|tagof|tl|to|while)\b', Keyword),
(r'(byte|int|big|real|string|array|chan|list|adt'
r'|fn|ref|of|module|self|type)\b', Keyword.Type),
(r'(con|iota|nil)\b', Keyword.Constant),
('[a-zA-Z_]\w*', Name),
],
'statement' : [
include('whitespace'),
include('statements'),
('[{}]', Punctuation),
(';', Punctuation, '#pop'),
],
'root': [
include('whitespace'),
default('statement'),
],
}
def analyse_text(text):
# Any limbo module implements something
if re.search(r'^implement \w+;', text, re.MULTILINE):
return 0.7
# TODO:
# - Make lexers for:
# - asm sources
# - man pages
# - mkfiles
# - module definitions
# - namespace definitions
# - shell scripts
# - maybe keyfiles and fonts
# they all seem to be quite similar to their equivalents
# from unix world, so there should not be a lot of problems
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