271 lines
9.2 KiB
Python
271 lines
9.2 KiB
Python
# -*- coding: utf-8 -*-
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"""
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pygments.lexers.rdf
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~~~~~~~~~~~~~~~~~~~
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Lexers for semantic web and RDF query languages and markup.
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:copyright: Copyright 2006-2017 by the Pygments team, see AUTHORS.
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:license: BSD, see LICENSE for details.
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"""
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import re
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from pygments.lexer import RegexLexer, bygroups, default
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from pygments.token import Keyword, Punctuation, String, Number, Operator, Generic, \
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Whitespace, Name, Literal, Comment, Text
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__all__ = ['SparqlLexer', 'TurtleLexer']
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class SparqlLexer(RegexLexer):
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"""
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Lexer for `SPARQL <http://www.w3.org/TR/rdf-sparql-query/>`_ query language.
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.. versionadded:: 2.0
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"""
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name = 'SPARQL'
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aliases = ['sparql']
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filenames = ['*.rq', '*.sparql']
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mimetypes = ['application/sparql-query']
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# character group definitions ::
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PN_CHARS_BASE_GRP = (u'a-zA-Z'
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u'\u00c0-\u00d6'
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u'\u00d8-\u00f6'
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u'\u00f8-\u02ff'
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u'\u0370-\u037d'
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u'\u037f-\u1fff'
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u'\u200c-\u200d'
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u'\u2070-\u218f'
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u'\u2c00-\u2fef'
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u'\u3001-\ud7ff'
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u'\uf900-\ufdcf'
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u'\ufdf0-\ufffd')
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PN_CHARS_U_GRP = (PN_CHARS_BASE_GRP + '_')
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PN_CHARS_GRP = (PN_CHARS_U_GRP +
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r'\-' +
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r'0-9' +
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u'\u00b7' +
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u'\u0300-\u036f' +
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u'\u203f-\u2040')
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HEX_GRP = '0-9A-Fa-f'
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PN_LOCAL_ESC_CHARS_GRP = r' _~.\-!$&"()*+,;=/?#@%'
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# terminal productions ::
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PN_CHARS_BASE = '[' + PN_CHARS_BASE_GRP + ']'
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PN_CHARS_U = '[' + PN_CHARS_U_GRP + ']'
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PN_CHARS = '[' + PN_CHARS_GRP + ']'
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HEX = '[' + HEX_GRP + ']'
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PN_LOCAL_ESC_CHARS = '[' + PN_LOCAL_ESC_CHARS_GRP + ']'
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IRIREF = r'<(?:[^<>"{}|^`\\\x00-\x20])*>'
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BLANK_NODE_LABEL = '_:[0-9' + PN_CHARS_U_GRP + '](?:[' + PN_CHARS_GRP + \
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'.]*' + PN_CHARS + ')?'
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PN_PREFIX = PN_CHARS_BASE + '(?:[' + PN_CHARS_GRP + '.]*' + PN_CHARS + ')?'
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VARNAME = u'[0-9' + PN_CHARS_U_GRP + '][' + PN_CHARS_U_GRP + \
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u'0-9\u00b7\u0300-\u036f\u203f-\u2040]*'
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PERCENT = '%' + HEX + HEX
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PN_LOCAL_ESC = r'\\' + PN_LOCAL_ESC_CHARS
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PLX = '(?:' + PERCENT + ')|(?:' + PN_LOCAL_ESC + ')'
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PN_LOCAL = ('(?:[' + PN_CHARS_U_GRP + ':0-9' + ']|' + PLX + ')' +
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'(?:(?:[' + PN_CHARS_GRP + '.:]|' + PLX + ')*(?:[' +
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PN_CHARS_GRP + ':]|' + PLX + '))?')
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EXPONENT = r'[eE][+-]?\d+'
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# Lexer token definitions ::
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tokens = {
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'root': [
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(r'\s+', Text),
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# keywords ::
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(r'((?i)select|construct|describe|ask|where|filter|group\s+by|minus|'
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r'distinct|reduced|from\s+named|from|order\s+by|desc|asc|limit|'
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r'offset|bindings|load|clear|drop|create|add|move|copy|'
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r'insert\s+data|delete\s+data|delete\s+where|delete|insert|'
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r'using\s+named|using|graph|default|named|all|optional|service|'
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r'silent|bind|union|not\s+in|in|as|having|to|prefix|base)\b', Keyword),
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(r'(a)\b', Keyword),
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# IRIs ::
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('(' + IRIREF + ')', Name.Label),
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# blank nodes ::
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('(' + BLANK_NODE_LABEL + ')', Name.Label),
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# # variables ::
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('[?$]' + VARNAME, Name.Variable),
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# prefixed names ::
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(r'(' + PN_PREFIX + ')?(\:)(' + PN_LOCAL + ')?',
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bygroups(Name.Namespace, Punctuation, Name.Tag)),
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# function names ::
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(r'((?i)str|lang|langmatches|datatype|bound|iri|uri|bnode|rand|abs|'
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r'ceil|floor|round|concat|strlen|ucase|lcase|encode_for_uri|'
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r'contains|strstarts|strends|strbefore|strafter|year|month|day|'
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r'hours|minutes|seconds|timezone|tz|now|md5|sha1|sha256|sha384|'
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r'sha512|coalesce|if|strlang|strdt|sameterm|isiri|isuri|isblank|'
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r'isliteral|isnumeric|regex|substr|replace|exists|not\s+exists|'
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r'count|sum|min|max|avg|sample|group_concat|separator)\b',
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Name.Function),
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# boolean literals ::
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(r'(true|false)', Keyword.Constant),
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# double literals ::
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(r'[+\-]?(\d+\.\d*' + EXPONENT + '|\.?\d+' + EXPONENT + ')', Number.Float),
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# decimal literals ::
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(r'[+\-]?(\d+\.\d*|\.\d+)', Number.Float),
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# integer literals ::
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(r'[+\-]?\d+', Number.Integer),
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# operators ::
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(r'(\|\||&&|=|\*|\-|\+|/|!=|<=|>=|!|<|>)', Operator),
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# punctuation characters ::
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(r'[(){}.;,:^\[\]]', Punctuation),
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# line comments ::
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(r'#[^\n]*', Comment),
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# strings ::
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(r'"""', String, 'triple-double-quoted-string'),
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(r'"', String, 'single-double-quoted-string'),
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(r"'''", String, 'triple-single-quoted-string'),
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(r"'", String, 'single-single-quoted-string'),
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],
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'triple-double-quoted-string': [
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(r'"""', String, 'end-of-string'),
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(r'[^\\]+', String),
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(r'\\', String, 'string-escape'),
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],
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'single-double-quoted-string': [
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(r'"', String, 'end-of-string'),
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(r'[^"\\\n]+', String),
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(r'\\', String, 'string-escape'),
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],
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'triple-single-quoted-string': [
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(r"'''", String, 'end-of-string'),
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(r'[^\\]+', String),
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(r'\\', String.Escape, 'string-escape'),
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],
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'single-single-quoted-string': [
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(r"'", String, 'end-of-string'),
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(r"[^'\\\n]+", String),
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(r'\\', String, 'string-escape'),
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],
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'string-escape': [
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(r'u' + HEX + '{4}', String.Escape, '#pop'),
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(r'U' + HEX + '{8}', String.Escape, '#pop'),
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(r'.', String.Escape, '#pop'),
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],
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'end-of-string': [
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(r'(@)([a-zA-Z]+(?:-[a-zA-Z0-9]+)*)',
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bygroups(Operator, Name.Function), '#pop:2'),
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(r'\^\^', Operator, '#pop:2'),
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default('#pop:2'),
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],
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}
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class TurtleLexer(RegexLexer):
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"""
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Lexer for `Turtle <http://www.w3.org/TR/turtle/>`_ data language.
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.. versionadded:: 2.1
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"""
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name = 'Turtle'
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aliases = ['turtle']
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filenames = ['*.ttl']
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mimetypes = ['text/turtle', 'application/x-turtle']
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flags = re.IGNORECASE
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patterns = {
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'PNAME_NS': r'((?:[a-z][\w-]*)?\:)', # Simplified character range
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'IRIREF': r'(<[^<>"{}|^`\\\x00-\x20]*>)'
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}
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# PNAME_NS PN_LOCAL (with simplified character range)
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patterns['PrefixedName'] = r'%(PNAME_NS)s([a-z][\w-]*)' % patterns
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tokens = {
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'root': [
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(r'\s+', Whitespace),
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# Base / prefix
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(r'(@base|BASE)(\s+)%(IRIREF)s(\s*)(\.?)' % patterns,
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bygroups(Keyword, Whitespace, Name.Variable, Whitespace,
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Punctuation)),
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(r'(@prefix|PREFIX)(\s+)%(PNAME_NS)s(\s+)%(IRIREF)s(\s*)(\.?)' % patterns,
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bygroups(Keyword, Whitespace, Name.Namespace, Whitespace,
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Name.Variable, Whitespace, Punctuation)),
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# The shorthand predicate 'a'
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(r'(?<=\s)a(?=\s)', Keyword.Type),
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# IRIREF
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(r'%(IRIREF)s' % patterns, Name.Variable),
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# PrefixedName
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(r'%(PrefixedName)s' % patterns,
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bygroups(Name.Namespace, Name.Tag)),
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# Comment
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(r'#[^\n]+', Comment),
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(r'\b(true|false)\b', Literal),
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(r'[+\-]?\d*\.\d+', Number.Float),
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(r'[+\-]?\d*(:?\.\d+)?E[+\-]?\d+', Number.Float),
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(r'[+\-]?\d+', Number.Integer),
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(r'[\[\](){}.;,:^]', Punctuation),
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(r'"""', String, 'triple-double-quoted-string'),
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(r'"', String, 'single-double-quoted-string'),
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(r"'''", String, 'triple-single-quoted-string'),
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(r"'", String, 'single-single-quoted-string'),
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],
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'triple-double-quoted-string': [
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(r'"""', String, 'end-of-string'),
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(r'[^\\]+', String),
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(r'\\', String, 'string-escape'),
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],
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'single-double-quoted-string': [
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(r'"', String, 'end-of-string'),
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(r'[^"\\\n]+', String),
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(r'\\', String, 'string-escape'),
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],
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'triple-single-quoted-string': [
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(r"'''", String, 'end-of-string'),
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(r'[^\\]+', String),
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(r'\\', String, 'string-escape'),
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],
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'single-single-quoted-string': [
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(r"'", String, 'end-of-string'),
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(r"[^'\\\n]+", String),
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(r'\\', String, 'string-escape'),
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],
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'string-escape': [
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(r'.', String, '#pop'),
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],
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'end-of-string': [
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(r'(@)([a-z]+(:?-[a-z0-9]+)*)',
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bygroups(Operator, Generic.Emph), '#pop:2'),
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(r'(\^\^)%(IRIREF)s' % patterns, bygroups(Operator, Generic.Emph), '#pop:2'),
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(r'(\^\^)%(PrefixedName)s' % patterns,
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bygroups(Operator, Generic.Emph, Generic.Emph), '#pop:2'),
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default('#pop:2'),
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],
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}
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