rana-cli/wakatime/packages/pygments/lexers/qvt.py
2016-06-13 16:41:17 +02:00

150 lines
5.7 KiB
Python

# -*- coding: utf-8 -*-
"""
pygments.lexers.qvt
~~~~~~~~~~~~~~~~~~~
Lexer for QVT Operational language.
:copyright: Copyright 2006-2015 by the Pygments team, see AUTHORS.
:license: BSD, see LICENSE for details.
"""
from pygments.lexer import RegexLexer, bygroups, include, combined
from pygments.token import Text, Comment, Operator, Keyword, Punctuation, \
Name, String, Number
__all__ = ['QVToLexer']
class QVToLexer(RegexLexer):
"""
For the `QVT Operational Mapping language <http://www.omg.org/spec/QVT/1.1/>`_.
Reference for implementing this: «Meta Object Facility (MOF) 2.0
Query/View/Transformation Specification», Version 1.1 - January 2011
(http://www.omg.org/spec/QVT/1.1/), see §8.4, «Concrete Syntax» in
particular.
Notable tokens assignments:
- Name.Class is assigned to the identifier following any of the following
keywords: metamodel, class, exception, primitive, enum, transformation
or library
- Name.Function is assigned to the names of mappings and queries
- Name.Builtin.Pseudo is assigned to the pre-defined variables 'this',
'self' and 'result'.
"""
# With obvious borrowings & inspiration from the Java, Python and C lexers
name = 'QVTO'
aliases = ['qvto', 'qvt']
filenames = ['*.qvto']
tokens = {
'root': [
(r'\n', Text),
(r'[^\S\n]+', Text),
(r'(--|//)(\s*)(directive:)?(.*)$',
bygroups(Comment, Comment, Comment.Preproc, Comment)),
# Uncomment the following if you want to distinguish between
# '/*' and '/**', à la javadoc
#(r'/[*]{2}(.|\n)*?[*]/', Comment.Multiline),
(r'/[*](.|\n)*?[*]/', Comment.Multiline),
(r'\\\n', Text),
(r'(and|not|or|xor|##?)\b', Operator.Word),
(r'([:]{1-2}=|[-+]=)\b', Operator.Word),
(r'(@|<<|>>)\b', Keyword), # stereotypes
(r'!=|<>|=|==|!->|->|>=|<=|[.]{3}|[+/*%=<>&|.~]', Operator),
(r'[]{}:(),;[]', Punctuation),
(r'(true|false|unlimited|null)\b', Keyword.Constant),
(r'(this|self|result)\b', Name.Builtin.Pseudo),
(r'(var)\b', Keyword.Declaration),
(r'(from|import)\b', Keyword.Namespace, 'fromimport'),
(r'(metamodel|class|exception|primitive|enum|transformation|library)(\s+)([a-zA-Z0-9_]+)',
bygroups(Keyword.Word, Text, Name.Class)),
(r'(exception)(\s+)([a-zA-Z0-9_]+)', bygroups(Keyword.Word, Text, Name.Exception)),
(r'(main)\b', Name.Function),
(r'(mapping|helper|query)(\s+)', bygroups(Keyword.Declaration, Text), 'operation'),
(r'(assert)(\s+)\b', bygroups(Keyword, Text), 'assert'),
(r'(Bag|Collection|Dict|OrderedSet|Sequence|Set|Tuple|List)\b',
Keyword.Type),
include('keywords'),
('"', String, combined('stringescape', 'dqs')),
("'", String, combined('stringescape', 'sqs')),
include('name'),
include('numbers'),
# (r'([a-zA-Z_][a-zA-Z0-9_]*)(::)([a-zA-Z_][a-zA-Z0-9_]*)',
# bygroups(Text, Text, Text)),
],
'fromimport': [
(r'(?:[ \t]|\\\n)+', Text),
(r'[a-zA-Z_][a-zA-Z0-9_.]*', Name.Namespace),
(r'', Text, '#pop'),
],
'operation': [
(r'::', Text),
(r'(.*::)([a-zA-Z_][a-zA-Z0-9_]*)[ \t]*(\()', bygroups(Text,Name.Function, Text), '#pop')
],
'assert': [
(r'(warning|error|fatal)\b', Keyword, '#pop'),
(r'', Text, '#pop') # all else: go back
],
'keywords': [
(r'(abstract|access|any|assert|'
r'blackbox|break|case|collect|collectNested|'
r'collectOne|collectselect|collectselectOne|composes|'
r'compute|configuration|constructor|continue|datatype|'
r'default|derived|disjuncts|do|elif|else|end|'
r'endif|except|exists|extends|'
r'forAll|forEach|forOne|from|if|'
r'implies|in|inherits|init|inout|'
r'intermediate|invresolve|invresolveIn|invresolveone|'
r'invresolveoneIn|isUnique|iterate|late|let|'
r'literal|log|map|merges|'
r'modeltype|new|object|one|'
r'ordered|out|package|population|'
r'property|raise|readonly|references|refines|'
r'reject|resolve|resolveIn|resolveone|resolveoneIn|'
r'return|select|selectOne|sortedBy|static|switch|'
r'tag|then|try|typedef|'
r'unlimited|uses|when|where|while|with|'
r'xcollect|xmap|xselect)\b', Keyword),
],
# There is no need to distinguish between String.Single and
# String.Double: 'strings' is factorised for 'dqs' and 'sqs'
'strings': [
(r'[^\\\'"\n]+', String),
# quotes, percents and backslashes must be parsed one at a time
(r'[\'"\\]', String),
],
'stringescape': [
(r'\\([\\btnfr"\']|u[0-3][0-7]{2}|u[0-7]{1,2})', String.Escape)
],
'dqs': [ # double-quoted string
(r'"', String, '#pop'),
(r'\\\\|\\"', String.Escape),
include('strings')
],
'sqs': [ # single-quoted string
(r"'", String, '#pop'),
(r"\\\\|\\'", String.Escape),
include('strings')
],
'name': [
('[a-zA-Z_][a-zA-Z0-9_]*', Name),
],
# numbers: excerpt taken from the python lexer
'numbers': [
(r'(\d+\.\d*|\d*\.\d+)([eE][+-]?[0-9]+)?', Number.Float),
(r'\d+[eE][+-]?[0-9]+', Number.Float),
(r'\d+', Number.Integer)
],
}