--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/eric6/ThirdParty/Pygments/pygments/lexers/prolog.py Sun Apr 14 15:09:21 2019 +0200
@@ -0,0 +1,306 @@
+# -*- coding: utf-8 -*-
+"""
+ pygments.lexers.prolog
+ ~~~~~~~~~~~~~~~~~~~~~~
+
+ Lexers for Prolog and Prolog-like languages.
+
+ :copyright: Copyright 2006-2017 by the Pygments team, see AUTHORS.
+ :license: BSD, see LICENSE for details.
+"""
+
+import re
+
+from pygments.lexer import RegexLexer, bygroups
+from pygments.token import Text, Comment, Operator, Keyword, Name, String, \
+ Number, Punctuation
+
+__all__ = ['PrologLexer', 'LogtalkLexer']
+
+
+class PrologLexer(RegexLexer):
+ """
+ Lexer for Prolog files.
+ """
+ name = 'Prolog'
+ aliases = ['prolog']
+ filenames = ['*.ecl', '*.prolog', '*.pro', '*.pl']
+ mimetypes = ['text/x-prolog']
+
+ flags = re.UNICODE | re.MULTILINE
+
+ tokens = {
+ 'root': [
+ (r'^#.*', Comment.Single),
+ (r'/\*', Comment.Multiline, 'nested-comment'),
+ (r'%.*', Comment.Single),
+ # character literal
+ (r'0\'.', String.Char),
+ (r'0b[01]+', Number.Bin),
+ (r'0o[0-7]+', Number.Oct),
+ (r'0x[0-9a-fA-F]+', Number.Hex),
+ # literal with prepended base
+ (r'\d\d?\'[a-zA-Z0-9]+', Number.Integer),
+ (r'(\d+\.\d*|\d*\.\d+)([eE][+-]?[0-9]+)?', Number.Float),
+ (r'\d+', Number.Integer),
+ (r'[\[\](){}|.,;!]', Punctuation),
+ (r':-|-->', Punctuation),
+ (r'"(?:\\x[0-9a-fA-F]+\\|\\u[0-9a-fA-F]{4}|\\U[0-9a-fA-F]{8}|'
+ r'\\[0-7]+\\|\\["\nabcefnrstv]|[^\\"])*"', String.Double),
+ (r"'(?:''|[^'])*'", String.Atom), # quoted atom
+ # Needs to not be followed by an atom.
+ # (r'=(?=\s|[a-zA-Z\[])', Operator),
+ (r'is\b', Operator),
+ (r'(<|>|=<|>=|==|=:=|=|/|//|\*|\+|-)(?=\s|[a-zA-Z0-9\[])',
+ Operator),
+ (r'(mod|div|not)\b', Operator),
+ (r'_', Keyword), # The don't-care variable
+ (r'([a-z]+)(:)', bygroups(Name.Namespace, Punctuation)),
+ (u'([a-z\u00c0-\u1fff\u3040-\ud7ff\ue000-\uffef]'
+ u'[\\w$\u00c0-\u1fff\u3040-\ud7ff\ue000-\uffef]*)'
+ u'(\\s*)(:-|-->)',
+ bygroups(Name.Function, Text, Operator)), # function defn
+ (u'([a-z\u00c0-\u1fff\u3040-\ud7ff\ue000-\uffef]'
+ u'[\\w$\u00c0-\u1fff\u3040-\ud7ff\ue000-\uffef]*)'
+ u'(\\s*)(\\()',
+ bygroups(Name.Function, Text, Punctuation)),
+ (u'[a-z\u00c0-\u1fff\u3040-\ud7ff\ue000-\uffef]'
+ u'[\\w$\u00c0-\u1fff\u3040-\ud7ff\ue000-\uffef]*',
+ String.Atom), # atom, characters
+ # This one includes !
+ (u'[#&*+\\-./:<=>?@\\\\^~\u00a1-\u00bf\u2010-\u303f]+',
+ String.Atom), # atom, graphics
+ (r'[A-Z_]\w*', Name.Variable),
+ (u'\\s+|[\u2000-\u200f\ufff0-\ufffe\uffef]', Text),
+ ],
+ 'nested-comment': [
+ (r'\*/', Comment.Multiline, '#pop'),
+ (r'/\*', Comment.Multiline, '#push'),
+ (r'[^*/]+', Comment.Multiline),
+ (r'[*/]', Comment.Multiline),
+ ],
+ }
+
+ def analyse_text(text):
+ return ':-' in text
+
+
+class LogtalkLexer(RegexLexer):
+ """
+ For `Logtalk <http://logtalk.org/>`_ source code.
+
+ .. versionadded:: 0.10
+ """
+
+ name = 'Logtalk'
+ aliases = ['logtalk']
+ filenames = ['*.lgt', '*.logtalk']
+ mimetypes = ['text/x-logtalk']
+
+ tokens = {
+ 'root': [
+ # Directives
+ (r'^\s*:-\s', Punctuation, 'directive'),
+ # Comments
+ (r'%.*?\n', Comment),
+ (r'/\*(.|\n)*?\*/', Comment),
+ # Whitespace
+ (r'\n', Text),
+ (r'\s+', Text),
+ # Numbers
+ (r"0'.", Number),
+ (r'0b[01]+', Number.Bin),
+ (r'0o[0-7]+', Number.Oct),
+ (r'0x[0-9a-fA-F]+', Number.Hex),
+ (r'\d+\.?\d*((e|E)(\+|-)?\d+)?', Number),
+ # Variables
+ (r'([A-Z_]\w*)', Name.Variable),
+ # Event handlers
+ (r'(after|before)(?=[(])', Keyword),
+ # Message forwarding handler
+ (r'forward(?=[(])', Keyword),
+ # Execution-context methods
+ (r'(parameter|this|se(lf|nder))(?=[(])', Keyword),
+ # Reflection
+ (r'(current_predicate|predicate_property)(?=[(])', Keyword),
+ # DCGs and term expansion
+ (r'(expand_(goal|term)|(goal|term)_expansion|phrase)(?=[(])', Keyword),
+ # Entity
+ (r'(abolish|c(reate|urrent))_(object|protocol|category)(?=[(])', Keyword),
+ (r'(object|protocol|category)_property(?=[(])', Keyword),
+ # Entity relations
+ (r'co(mplements_object|nforms_to_protocol)(?=[(])', Keyword),
+ (r'extends_(object|protocol|category)(?=[(])', Keyword),
+ (r'imp(lements_protocol|orts_category)(?=[(])', Keyword),
+ (r'(instantiat|specializ)es_class(?=[(])', Keyword),
+ # Events
+ (r'(current_event|(abolish|define)_events)(?=[(])', Keyword),
+ # Flags
+ (r'(current|set)_logtalk_flag(?=[(])', Keyword),
+ # Compiling, loading, and library paths
+ (r'logtalk_(compile|l(ibrary_path|oad|oad_context)|make)(?=[(])', Keyword),
+ (r'\blogtalk_make\b', Keyword),
+ # Database
+ (r'(clause|retract(all)?)(?=[(])', Keyword),
+ (r'a(bolish|ssert(a|z))(?=[(])', Keyword),
+ # Control constructs
+ (r'(ca(ll|tch)|throw)(?=[(])', Keyword),
+ (r'(fa(il|lse)|true)\b', Keyword),
+ # All solutions
+ (r'((bag|set)of|f(ind|or)all)(?=[(])', Keyword),
+ # Multi-threading meta-predicates
+ (r'threaded(_(call|once|ignore|exit|peek|wait|notify))?(?=[(])', Keyword),
+ # Term unification
+ (r'(subsumes_term|unify_with_occurs_check)(?=[(])', Keyword),
+ # Term creation and decomposition
+ (r'(functor|arg|copy_term|numbervars|term_variables)(?=[(])', Keyword),
+ # Evaluable functors
+ (r'(div|rem|m(ax|in|od)|abs|sign)(?=[(])', Keyword),
+ (r'float(_(integer|fractional)_part)?(?=[(])', Keyword),
+ (r'(floor|t(an|runcate)|round|ceiling)(?=[(])', Keyword),
+ # Other arithmetic functors
+ (r'(cos|a(cos|sin|tan|tan2)|exp|log|s(in|qrt)|xor)(?=[(])', Keyword),
+ # Term testing
+ (r'(var|atom(ic)?|integer|float|c(allable|ompound)|n(onvar|umber)|'
+ r'ground|acyclic_term)(?=[(])', Keyword),
+ # Term comparison
+ (r'compare(?=[(])', Keyword),
+ # Stream selection and control
+ (r'(curren|se)t_(in|out)put(?=[(])', Keyword),
+ (r'(open|close)(?=[(])', Keyword),
+ (r'flush_output(?=[(])', Keyword),
+ (r'(at_end_of_stream|flush_output)\b', Keyword),
+ (r'(stream_property|at_end_of_stream|set_stream_position)(?=[(])', Keyword),
+ # Character and byte input/output
+ (r'(nl|(get|peek|put)_(byte|c(har|ode)))(?=[(])', Keyword),
+ (r'\bnl\b', Keyword),
+ # Term input/output
+ (r'read(_term)?(?=[(])', Keyword),
+ (r'write(q|_(canonical|term))?(?=[(])', Keyword),
+ (r'(current_)?op(?=[(])', Keyword),
+ (r'(current_)?char_conversion(?=[(])', Keyword),
+ # Atomic term processing
+ (r'atom_(length|c(hars|o(ncat|des)))(?=[(])', Keyword),
+ (r'(char_code|sub_atom)(?=[(])', Keyword),
+ (r'number_c(har|ode)s(?=[(])', Keyword),
+ # Implementation defined hooks functions
+ (r'(se|curren)t_prolog_flag(?=[(])', Keyword),
+ (r'\bhalt\b', Keyword),
+ (r'halt(?=[(])', Keyword),
+ # Message sending operators
+ (r'(::|:|\^\^)', Operator),
+ # External call
+ (r'[{}]', Keyword),
+ # Logic and control
+ (r'(ignore|once)(?=[(])', Keyword),
+ (r'\brepeat\b', Keyword),
+ # Sorting
+ (r'(key)?sort(?=[(])', Keyword),
+ # Bitwise functors
+ (r'(>>|<<|/\\|\\\\|\\)', Operator),
+ # Predicate aliases
+ (r'\bas\b', Operator),
+ # Arithemtic evaluation
+ (r'\bis\b', Keyword),
+ # Arithemtic comparison
+ (r'(=:=|=\\=|<|=<|>=|>)', Operator),
+ # Term creation and decomposition
+ (r'=\.\.', Operator),
+ # Term unification
+ (r'(=|\\=)', Operator),
+ # Term comparison
+ (r'(==|\\==|@=<|@<|@>=|@>)', Operator),
+ # Evaluable functors
+ (r'(//|[-+*/])', Operator),
+ (r'\b(e|pi|div|mod|rem)\b', Operator),
+ # Other arithemtic functors
+ (r'\b\*\*\b', Operator),
+ # DCG rules
+ (r'-->', Operator),
+ # Control constructs
+ (r'([!;]|->)', Operator),
+ # Logic and control
+ (r'\\+', Operator),
+ # Mode operators
+ (r'[?@]', Operator),
+ # Existential quantifier
+ (r'\^', Operator),
+ # Strings
+ (r'"(\\\\|\\"|[^"])*"', String),
+ # Ponctuation
+ (r'[()\[\],.|]', Text),
+ # Atoms
+ (r"[a-z]\w*", Text),
+ (r"'", String, 'quoted_atom'),
+ ],
+
+ 'quoted_atom': [
+ (r"''", String),
+ (r"'", String, '#pop'),
+ (r'\\([\\abfnrtv"\']|(x[a-fA-F0-9]+|[0-7]+)\\)', String.Escape),
+ (r"[^\\'\n]+", String),
+ (r'\\', String),
+ ],
+
+ 'directive': [
+ # Conditional compilation directives
+ (r'(el)?if(?=[(])', Keyword, 'root'),
+ (r'(e(lse|ndif))[.]', Keyword, 'root'),
+ # Entity directives
+ (r'(category|object|protocol)(?=[(])', Keyword, 'entityrelations'),
+ (r'(end_(category|object|protocol))[.]', Keyword, 'root'),
+ # Predicate scope directives
+ (r'(public|protected|private)(?=[(])', Keyword, 'root'),
+ # Other directives
+ (r'e(n(coding|sure_loaded)|xport)(?=[(])', Keyword, 'root'),
+ (r'in(clude|itialization|fo)(?=[(])', Keyword, 'root'),
+ (r'(built_in|dynamic|synchronized|threaded)[.]', Keyword, 'root'),
+ (r'(alias|d(ynamic|iscontiguous)|m(eta_(non_terminal|predicate)|ode|ultifile)|'
+ r's(et_(logtalk|prolog)_flag|ynchronized))(?=[(])', Keyword, 'root'),
+ (r'op(?=[(])', Keyword, 'root'),
+ (r'(c(alls|oinductive)|module|reexport|use(s|_module))(?=[(])', Keyword, 'root'),
+ (r'[a-z]\w*(?=[(])', Text, 'root'),
+ (r'[a-z]\w*[.]', Text, 'root'),
+ ],
+
+ 'entityrelations': [
+ (r'(complements|extends|i(nstantiates|mp(lements|orts))|specializes)(?=[(])', Keyword),
+ # Numbers
+ (r"0'.", Number),
+ (r'0b[01]+', Number.Bin),
+ (r'0o[0-7]+', Number.Oct),
+ (r'0x[0-9a-fA-F]+', Number.Hex),
+ (r'\d+\.?\d*((e|E)(\+|-)?\d+)?', Number),
+ # Variables
+ (r'([A-Z_]\w*)', Name.Variable),
+ # Atoms
+ (r"[a-z]\w*", Text),
+ (r"'", String, 'quoted_atom'),
+ # Strings
+ (r'"(\\\\|\\"|[^"])*"', String),
+ # End of entity-opening directive
+ (r'([)]\.)', Text, 'root'),
+ # Scope operator
+ (r'(::)', Operator),
+ # Ponctuation
+ (r'[()\[\],.|]', Text),
+ # Comments
+ (r'%.*?\n', Comment),
+ (r'/\*(.|\n)*?\*/', Comment),
+ # Whitespace
+ (r'\n', Text),
+ (r'\s+', Text),
+ ]
+ }
+
+ def analyse_text(text):
+ if ':- object(' in text:
+ return 1.0
+ elif ':- protocol(' in text:
+ return 1.0
+ elif ':- category(' in text:
+ return 1.0
+ elif re.search(r'^:-\s[a-z]', text, re.M):
+ return 0.9
+ else:
+ return 0.0
