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Quelle  vip.py   Sprache: Python

 
"""
    pygments.lexers.vip
    ~~~~~~~~~~~~~~~~~~~

    Lexers for Visual Prolog & Grammar files.

    :copyright: Copyright 2006-2024 by the Pygments team, see AUTHORS.
    :license: BSD, see LICENSE for details.
"""

import re

from pygments.lexer import RegexLexer, inherit, words, include
from pygments.token import Text, Comment, Operator, Keyword, Name, String, \
    Number, Punctuation, Whitespace

__all__ = ['VisualPrologLexer''VisualPrologGrammarLexer']


class VisualPrologBaseLexer(RegexLexer):
    minorendkw = ('try''foreach''if')
    minorkwexp = ('and''catch''do''else''elseif''erroneous''externally''failure''finally''foreach''if''or''orelse''otherwise''then',
                  'try''div''mod''rem''quot')
    dockw = ('short''detail''end''withdomain')
    tokens = {
        'root': [
            (r'\s+', Whitespace),
            (words(minorendkw, prefix=r'\bend\s+', suffix=r'\b'), Keyword.Minor),
            (r'end', Keyword),
            (words(minorkwexp, suffix=r'\b'), Keyword.Minor),
            (r'0[xo][\da-fA-F_]+', Number),
            (r'((\d[\d_]*)?\.)?\d[\d_]*([eE][\-+]?\d+)?', Number),
            (r'_\w*', Name.Variable.Anonymous),
            (r'[A-Z]\w*', Name.Variable),
            (r'@\w+', Name.Variable),
            (r'[a-z]\w*', Name),
            (r'/\*', Comment, 'comment'),
            (r'\%', Comment, 'commentline'),
            (r'"', String.Symbol, 'string'),
            (r'\'', String.Symbol, 'stringsingle'),
            (r'@"', String.Symbol, 'atstring'),
            (r'[\-+*^/!?<>=~:]+', Operator),
            (r'[$,.[\]|(){}\\]+', Punctuation),
            (r'.', Text),
        ],
        'commentdoc': [
            (words(dockw, prefix=r'@', suffix=r'\b'), Comment.Preproc),
            (r'@', Comment),
        ],
        'commentline': [
            include('commentdoc'),
            (r'[^@\n]+', Comment),
            (r'$', Comment, '#pop'),
        ],
        'comment': [
            include('commentdoc'),
            (r'[^@*/]+', Comment),
            (r'/\*', Comment, '#push'),
            (r'\*/', Comment, '#pop'),
            (r'[*/]', Comment),
        ],
        'stringescape': [
            (r'\\u[0-9a-fA-F]{4}', String.Escape),
            (r'\\[\'"ntr\\]', String.Escape),
        ],
        'stringsingle': [
            include('stringescape'),
            (r'\'', String.Symbol, '#pop'),
            (r'[^\'\\\n]+', String),
            (r'\n', String.Escape.Error, '#pop'),
        ],
        'string': [
            include('stringescape'),
            (r'"', String.Symbol, '#pop'),
            (r'[^"\\\n]+', String),
            (r'\n', String.Escape.Error, '#pop'),
        ],
        'atstring': [
            (r'""', String.Escape),
            (r'"', String.Symbol, '#pop'),
            (r'[^"]+', String),
        ]
    }


class VisualPrologLexer(VisualPrologBaseLexer):
    """Lexer for VisualProlog
    """
    name = 'Visual Prolog'
    url = 'https://www.visual-prolog.com/'
    aliases = ['visualprolog']
    filenames = ['*.pro''*.cl''*.i''*.pack''*.ph']
    version_added = '2.17'

    majorkw = ('goal''namespace''interface''class''implement''where''open''inherits''supports''resolve',
               'delegate''monitor''constants''domains''predicates''constructors''properties''clauses''facts')
    minorkw = ('align''anyflow''as''bitsize''determ''digits''erroneous''externally''failure''from',
               'guard''multi''nondeterm''or''orelse''otherwise''procedure''resolve''single''suspending')
    directivekw = ('bininclude''else''elseif''endif''error''export''externally''from''grammargenerate',
                   'grammarinclude''if''include''message''options''orrequires''requires''stringinclude''then')
    tokens = {
        'root': [
            (words(minorkw, suffix=r'\b'), Keyword.Minor),
            (words(majorkw, suffix=r'\b'), Keyword),
            (words(directivekw, prefix='#', suffix=r'\b'), Keyword.Directive),
            inherit
        ]
    }

    def analyse_text(text):
        """Competes with IDL and Prolog on *.pro; div. lisps on*.cl and SwigLexer on *.i"""
        # These are *really* good indicators (and not conflicting with the other languages)
        # end-scope first on line e.g. 'end implement'
        # section keyword alone on line e.g. 'clauses'
        if re.search(r'^\s*(end\s+(interface|class|implement)|(clauses|predicates|domains|facts|constants|properties)\s*$)', text):
            return 0.98
        else:
            return 0


class VisualPrologGrammarLexer(VisualPrologBaseLexer):
    """Lexer for VisualProlog grammar
    """

    name = 'Visual Prolog Grammar'
    url = 'https://www.visual-prolog.com/'
    aliases = ['visualprologgrammar']
    filenames = ['*.vipgrm']
    version_added = '2.17'

    majorkw = ('open''namespace''grammar''nonterminals',
               'startsymbols''terminals''rules''precedence')
    directivekw = ('bininclude''stringinclude')
    tokens = {
        'root': [
            (words(majorkw, suffix=r'\b'), Keyword),
            (words(directivekw, prefix='#', suffix=r'\b'), Keyword.Directive),
            inherit
        ]
    }

    def analyse_text(text):
        """No competditors (currently)"""
        # These are *really* good indicators
        # end-scope first on line e.g. 'end grammar'
        # section keyword alone on line e.g. 'rules'
        if re.search(r'^\s*(end\s+grammar|(nonterminals|startsymbols|terminals|rules|precedence)\s*$)', text):
            return 0.98
        else:
            return 0

Messung V0.5
C=89 H=81 G=84

¤ Dauer der Verarbeitung: 0.3 Sekunden  ¤

*© Formatika GbR, Deutschland






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