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venv/Lib/site-packages/pygments/lexers/qvt.py
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venv/Lib/site-packages/pygments/lexers/qvt.py
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# -*- coding: utf-8 -*-
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"""
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pygments.lexers.qvt
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~~~~~~~~~~~~~~~~~~~
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Lexer for QVT Operational language.
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:copyright: Copyright 2006-2020 by the Pygments team, see AUTHORS.
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:license: BSD, see LICENSE for details.
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"""
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from pygments.lexer import RegexLexer, bygroups, include, combined, default, \
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words
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from pygments.token import Text, Comment, Operator, Keyword, Punctuation, \
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Name, String, Number
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__all__ = ['QVToLexer']
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class QVToLexer(RegexLexer):
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"""
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For the `QVT Operational Mapping language <http://www.omg.org/spec/QVT/1.1/>`_.
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Reference for implementing this: «Meta Object Facility (MOF) 2.0
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Query/View/Transformation Specification», Version 1.1 - January 2011
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(http://www.omg.org/spec/QVT/1.1/), see §8.4, «Concrete Syntax» in
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particular.
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Notable tokens assignments:
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- Name.Class is assigned to the identifier following any of the following
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keywords: metamodel, class, exception, primitive, enum, transformation
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or library
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- Name.Function is assigned to the names of mappings and queries
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- Name.Builtin.Pseudo is assigned to the pre-defined variables 'this',
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'self' and 'result'.
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"""
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# With obvious borrowings & inspiration from the Java, Python and C lexers
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name = 'QVTO'
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aliases = ['qvto', 'qvt']
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filenames = ['*.qvto']
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tokens = {
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'root': [
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(r'\n', Text),
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(r'[^\S\n]+', Text),
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(r'(--|//)(\s*)(directive:)?(.*)$',
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bygroups(Comment, Comment, Comment.Preproc, Comment)),
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# Uncomment the following if you want to distinguish between
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# '/*' and '/**', à la javadoc
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# (r'/[*]{2}(.|\n)*?[*]/', Comment.Multiline),
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(r'/[*](.|\n)*?[*]/', Comment.Multiline),
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(r'\\\n', Text),
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(r'(and|not|or|xor|##?)\b', Operator.Word),
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(r'(:{1,2}=|[-+]=)\b', Operator.Word),
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(r'(@|<<|>>)\b', Keyword), # stereotypes
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(r'!=|<>|==|=|!->|->|>=|<=|[.]{3}|[+/*%=<>&|.~]', Operator),
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(r'[]{}:(),;[]', Punctuation),
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(r'(true|false|unlimited|null)\b', Keyword.Constant),
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(r'(this|self|result)\b', Name.Builtin.Pseudo),
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(r'(var)\b', Keyword.Declaration),
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(r'(from|import)\b', Keyword.Namespace, 'fromimport'),
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(r'(metamodel|class|exception|primitive|enum|transformation|'
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r'library)(\s+)(\w+)',
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bygroups(Keyword.Word, Text, Name.Class)),
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(r'(exception)(\s+)(\w+)',
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bygroups(Keyword.Word, Text, Name.Exception)),
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(r'(main)\b', Name.Function),
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(r'(mapping|helper|query)(\s+)',
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bygroups(Keyword.Declaration, Text), 'operation'),
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(r'(assert)(\s+)\b', bygroups(Keyword, Text), 'assert'),
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(r'(Bag|Collection|Dict|OrderedSet|Sequence|Set|Tuple|List)\b',
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Keyword.Type),
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include('keywords'),
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('"', String, combined('stringescape', 'dqs')),
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("'", String, combined('stringescape', 'sqs')),
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include('name'),
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include('numbers'),
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# (r'([a-zA-Z_]\w*)(::)([a-zA-Z_]\w*)',
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# bygroups(Text, Text, Text)),
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],
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'fromimport': [
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(r'(?:[ \t]|\\\n)+', Text),
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(r'[a-zA-Z_][\w.]*', Name.Namespace),
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default('#pop'),
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],
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'operation': [
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(r'::', Text),
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(r'(.*::)([a-zA-Z_]\w*)([ \t]*)(\()',
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bygroups(Text, Name.Function, Text, Punctuation), '#pop')
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],
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'assert': [
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(r'(warning|error|fatal)\b', Keyword, '#pop'),
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default('#pop'), # all else: go back
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],
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'keywords': [
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(words((
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'abstract', 'access', 'any', 'assert', 'blackbox', 'break',
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'case', 'collect', 'collectNested', 'collectOne', 'collectselect',
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'collectselectOne', 'composes', 'compute', 'configuration',
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'constructor', 'continue', 'datatype', 'default', 'derived',
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'disjuncts', 'do', 'elif', 'else', 'end', 'endif', 'except',
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'exists', 'extends', 'forAll', 'forEach', 'forOne', 'from', 'if',
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'implies', 'in', 'inherits', 'init', 'inout', 'intermediate',
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'invresolve', 'invresolveIn', 'invresolveone', 'invresolveoneIn',
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'isUnique', 'iterate', 'late', 'let', 'literal', 'log', 'map',
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'merges', 'modeltype', 'new', 'object', 'one', 'ordered', 'out',
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'package', 'population', 'property', 'raise', 'readonly',
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'references', 'refines', 'reject', 'resolve', 'resolveIn',
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'resolveone', 'resolveoneIn', 'return', 'select', 'selectOne',
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'sortedBy', 'static', 'switch', 'tag', 'then', 'try', 'typedef',
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'unlimited', 'uses', 'when', 'where', 'while', 'with', 'xcollect',
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'xmap', 'xselect'), suffix=r'\b'), Keyword),
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],
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# There is no need to distinguish between String.Single and
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# String.Double: 'strings' is factorised for 'dqs' and 'sqs'
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'strings': [
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(r'[^\\\'"\n]+', String),
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# quotes, percents and backslashes must be parsed one at a time
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(r'[\'"\\]', String),
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],
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'stringescape': [
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(r'\\([\\btnfr"\']|u[0-3][0-7]{2}|u[0-7]{1,2})', String.Escape)
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],
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'dqs': [ # double-quoted string
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(r'"', String, '#pop'),
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(r'\\\\|\\"', String.Escape),
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include('strings')
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],
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'sqs': [ # single-quoted string
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(r"'", String, '#pop'),
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(r"\\\\|\\'", String.Escape),
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include('strings')
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],
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'name': [
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(r'[a-zA-Z_]\w*', Name),
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],
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# numbers: excerpt taken from the python lexer
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'numbers': [
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(r'(\d+\.\d*|\d*\.\d+)([eE][+-]?[0-9]+)?', Number.Float),
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(r'\d+[eE][+-]?[0-9]+', Number.Float),
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(r'\d+', Number.Integer)
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],
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}
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