Coverage for /pythoncovmergedfiles/medio/medio/usr/local/lib/python3.8/site-packages/pygments/lexers/prolog.py: 66%
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1"""
2 pygments.lexers.prolog
3 ~~~~~~~~~~~~~~~~~~~~~~
5 Lexers for Prolog and Prolog-like languages.
7 :copyright: Copyright 2006-2023 by the Pygments team, see AUTHORS.
8 :license: BSD, see LICENSE for details.
9"""
11import re
13from pygments.lexer import RegexLexer, bygroups
14from pygments.token import Text, Comment, Operator, Keyword, Name, String, \
15 Number, Punctuation
17__all__ = ['PrologLexer', 'LogtalkLexer']
20class PrologLexer(RegexLexer):
21 """
22 Lexer for Prolog files.
23 """
24 name = 'Prolog'
25 aliases = ['prolog']
26 filenames = ['*.ecl', '*.prolog', '*.pro', '*.pl']
27 mimetypes = ['text/x-prolog']
29 tokens = {
30 'root': [
31 (r'/\*', Comment.Multiline, 'nested-comment'),
32 (r'%.*', Comment.Single),
33 # character literal
34 (r'0\'.', String.Char),
35 (r'0b[01]+', Number.Bin),
36 (r'0o[0-7]+', Number.Oct),
37 (r'0x[0-9a-fA-F]+', Number.Hex),
38 # literal with prepended base
39 (r'\d\d?\'[a-zA-Z0-9]+', Number.Integer),
40 (r'(\d+\.\d*|\d*\.\d+)([eE][+-]?[0-9]+)?', Number.Float),
41 (r'\d+', Number.Integer),
42 (r'[\[\](){}|.,;!]', Punctuation),
43 (r':-|-->', Punctuation),
44 (r'"(?:\\x[0-9a-fA-F]+\\|\\u[0-9a-fA-F]{4}|\\U[0-9a-fA-F]{8}|'
45 r'\\[0-7]+\\|\\["\\abcefnrstv]|[^\\"])*"', String.Double),
46 (r"'(?:''|[^'])*'", String.Atom), # quoted atom
47 # Needs to not be followed by an atom.
48 # (r'=(?=\s|[a-zA-Z\[])', Operator),
49 (r'is\b', Operator),
50 (r'(<|>|=<|>=|==|=:=|=|/|//|\*|\+|-)(?=\s|[a-zA-Z0-9\[])',
51 Operator),
52 (r'(mod|div|not)\b', Operator),
53 (r'_', Keyword), # The don't-care variable
54 (r'([a-z]+)(:)', bygroups(Name.Namespace, Punctuation)),
55 (r'([a-z\u00c0-\u1fff\u3040-\ud7ff\ue000-\uffef]'
56 r'[\w$\u00c0-\u1fff\u3040-\ud7ff\ue000-\uffef]*)'
57 r'(\s*)(:-|-->)',
58 bygroups(Name.Function, Text, Operator)), # function defn
59 (r'([a-z\u00c0-\u1fff\u3040-\ud7ff\ue000-\uffef]'
60 r'[\w$\u00c0-\u1fff\u3040-\ud7ff\ue000-\uffef]*)'
61 r'(\s*)(\()',
62 bygroups(Name.Function, Text, Punctuation)),
63 (r'[a-z\u00c0-\u1fff\u3040-\ud7ff\ue000-\uffef]'
64 r'[\w$\u00c0-\u1fff\u3040-\ud7ff\ue000-\uffef]*',
65 String.Atom), # atom, characters
66 # This one includes !
67 (r'[#&*+\-./:<=>?@\\^~\u00a1-\u00bf\u2010-\u303f]+',
68 String.Atom), # atom, graphics
69 (r'[A-Z_]\w*', Name.Variable),
70 (r'\s+|[\u2000-\u200f\ufff0-\ufffe\uffef]', Text),
71 ],
72 'nested-comment': [
73 (r'\*/', Comment.Multiline, '#pop'),
74 (r'/\*', Comment.Multiline, '#push'),
75 (r'[^*/]+', Comment.Multiline),
76 (r'[*/]', Comment.Multiline),
77 ],
78 }
80 def analyse_text(text):
81 return ':-' in text
84class LogtalkLexer(RegexLexer):
85 """
86 For Logtalk source code.
88 .. versionadded:: 0.10
89 """
91 name = 'Logtalk'
92 url = 'http://logtalk.org/'
93 aliases = ['logtalk']
94 filenames = ['*.lgt', '*.logtalk']
95 mimetypes = ['text/x-logtalk']
97 tokens = {
98 'root': [
99 # Directives
100 (r'^\s*:-\s', Punctuation, 'directive'),
101 # Comments
102 (r'%.*?\n', Comment),
103 (r'/\*(.|\n)*?\*/', Comment),
104 # Whitespace
105 (r'\n', Text),
106 (r'\s+', Text),
107 # Numbers
108 (r"0'[\\]?.", Number),
109 (r'0b[01]+', Number.Bin),
110 (r'0o[0-7]+', Number.Oct),
111 (r'0x[0-9a-fA-F]+', Number.Hex),
112 (r'\d+\.?\d*((e|E)(\+|-)?\d+)?', Number),
113 # Variables
114 (r'([A-Z_][a-zA-Z0-9_]*)', Name.Variable),
115 # Event handlers
116 (r'(after|before)(?=[(])', Keyword),
117 # Message forwarding handler
118 (r'forward(?=[(])', Keyword),
119 # Execution-context methods
120 (r'(context|parameter|this|se(lf|nder))(?=[(])', Keyword),
121 # Reflection
122 (r'(current_predicate|predicate_property)(?=[(])', Keyword),
123 # DCGs and term expansion
124 (r'(expand_(goal|term)|(goal|term)_expansion|phrase)(?=[(])', Keyword),
125 # Entity
126 (r'(abolish|c(reate|urrent))_(object|protocol|category)(?=[(])', Keyword),
127 (r'(object|protocol|category)_property(?=[(])', Keyword),
128 # Entity relations
129 (r'co(mplements_object|nforms_to_protocol)(?=[(])', Keyword),
130 (r'extends_(object|protocol|category)(?=[(])', Keyword),
131 (r'imp(lements_protocol|orts_category)(?=[(])', Keyword),
132 (r'(instantiat|specializ)es_class(?=[(])', Keyword),
133 # Events
134 (r'(current_event|(abolish|define)_events)(?=[(])', Keyword),
135 # Flags
136 (r'(create|current|set)_logtalk_flag(?=[(])', Keyword),
137 # Compiling, loading, and library paths
138 (r'logtalk_(compile|l(ibrary_path|oad|oad_context)|make(_target_action)?)(?=[(])', Keyword),
139 (r'\blogtalk_make\b', Keyword),
140 # Database
141 (r'(clause|retract(all)?)(?=[(])', Keyword),
142 (r'a(bolish|ssert(a|z))(?=[(])', Keyword),
143 # Control constructs
144 (r'(ca(ll|tch)|throw)(?=[(])', Keyword),
145 (r'(fa(il|lse)|true|(instantiation|system)_error)\b', Keyword),
146 (r'(type|domain|existence|permission|representation|evaluation|resource|syntax)_error(?=[(])', Keyword),
147 # All solutions
148 (r'((bag|set)of|f(ind|or)all)(?=[(])', Keyword),
149 # Multi-threading predicates
150 (r'threaded(_(ca(ll|ncel)|once|ignore|exit|peek|wait|notify))?(?=[(])', Keyword),
151 # Engine predicates
152 (r'threaded_engine(_(create|destroy|self|next|next_reified|yield|post|fetch))?(?=[(])', Keyword),
153 # Term unification
154 (r'(subsumes_term|unify_with_occurs_check)(?=[(])', Keyword),
155 # Term creation and decomposition
156 (r'(functor|arg|copy_term|numbervars|term_variables)(?=[(])', Keyword),
157 # Evaluable functors
158 (r'(div|rem|m(ax|in|od)|abs|sign)(?=[(])', Keyword),
159 (r'float(_(integer|fractional)_part)?(?=[(])', Keyword),
160 (r'(floor|t(an|runcate)|round|ceiling)(?=[(])', Keyword),
161 # Other arithmetic functors
162 (r'(cos|a(cos|sin|tan|tan2)|exp|log|s(in|qrt)|xor)(?=[(])', Keyword),
163 # Term testing
164 (r'(var|atom(ic)?|integer|float|c(allable|ompound)|n(onvar|umber)|ground|acyclic_term)(?=[(])', Keyword),
165 # Term comparison
166 (r'compare(?=[(])', Keyword),
167 # Stream selection and control
168 (r'(curren|se)t_(in|out)put(?=[(])', Keyword),
169 (r'(open|close)(?=[(])', Keyword),
170 (r'flush_output(?=[(])', Keyword),
171 (r'(at_end_of_stream|flush_output)\b', Keyword),
172 (r'(stream_property|at_end_of_stream|set_stream_position)(?=[(])', Keyword),
173 # Character and byte input/output
174 (r'(nl|(get|peek|put)_(byte|c(har|ode)))(?=[(])', Keyword),
175 (r'\bnl\b', Keyword),
176 # Term input/output
177 (r'read(_term)?(?=[(])', Keyword),
178 (r'write(q|_(canonical|term))?(?=[(])', Keyword),
179 (r'(current_)?op(?=[(])', Keyword),
180 (r'(current_)?char_conversion(?=[(])', Keyword),
181 # Atomic term processing
182 (r'atom_(length|c(hars|o(ncat|des)))(?=[(])', Keyword),
183 (r'(char_code|sub_atom)(?=[(])', Keyword),
184 (r'number_c(har|ode)s(?=[(])', Keyword),
185 # Implementation defined hooks functions
186 (r'(se|curren)t_prolog_flag(?=[(])', Keyword),
187 (r'\bhalt\b', Keyword),
188 (r'halt(?=[(])', Keyword),
189 # Message sending operators
190 (r'(::|:|\^\^)', Operator),
191 # External call
192 (r'[{}]', Keyword),
193 # Logic and control
194 (r'(ignore|once)(?=[(])', Keyword),
195 (r'\brepeat\b', Keyword),
196 # Sorting
197 (r'(key)?sort(?=[(])', Keyword),
198 # Bitwise functors
199 (r'(>>|<<|/\\|\\\\|\\)', Operator),
200 # Predicate aliases
201 (r'\bas\b', Operator),
202 # Arithmetic evaluation
203 (r'\bis\b', Keyword),
204 # Arithmetic comparison
205 (r'(=:=|=\\=|<|=<|>=|>)', Operator),
206 # Term creation and decomposition
207 (r'=\.\.', Operator),
208 # Term unification
209 (r'(=|\\=)', Operator),
210 # Term comparison
211 (r'(==|\\==|@=<|@<|@>=|@>)', Operator),
212 # Evaluable functors
213 (r'(//|[-+*/])', Operator),
214 (r'\b(e|pi|div|mod|rem)\b', Operator),
215 # Other arithmetic functors
216 (r'\b\*\*\b', Operator),
217 # DCG rules
218 (r'-->', Operator),
219 # Control constructs
220 (r'([!;]|->)', Operator),
221 # Logic and control
222 (r'\\+', Operator),
223 # Mode operators
224 (r'[?@]', Operator),
225 # Existential quantifier
226 (r'\^', Operator),
227 # Strings
228 (r'"(\\\\|\\[^\\]|[^"\\])*"', String),
229 # Punctuation
230 (r'[()\[\],.|]', Text),
231 # Atoms
232 (r"[a-z][a-zA-Z0-9_]*", Text),
233 (r"'", String, 'quoted_atom'),
234 ],
236 'quoted_atom': [
237 (r"''", String),
238 (r"'", String, '#pop'),
239 (r'\\([\\abfnrtv"\']|(x[a-fA-F0-9]+|[0-7]+)\\)', String.Escape),
240 (r"[^\\'\n]+", String),
241 (r'\\', String),
242 ],
244 'directive': [
245 # Conditional compilation directives
246 (r'(el)?if(?=[(])', Keyword, 'root'),
247 (r'(e(lse|ndif))(?=[.])', Keyword, 'root'),
248 # Entity directives
249 (r'(category|object|protocol)(?=[(])', Keyword, 'entityrelations'),
250 (r'(end_(category|object|protocol))(?=[.])', Keyword, 'root'),
251 # Predicate scope directives
252 (r'(public|protected|private)(?=[(])', Keyword, 'root'),
253 # Other directives
254 (r'e(n(coding|sure_loaded)|xport)(?=[(])', Keyword, 'root'),
255 (r'in(clude|itialization|fo)(?=[(])', Keyword, 'root'),
256 (r'(built_in|dynamic|synchronized|threaded)(?=[.])', Keyword, 'root'),
257 (r'(alias|d(ynamic|iscontiguous)|m(eta_(non_terminal|predicate)|ode|ultifile)|s(et_(logtalk|prolog)_flag|ynchronized))(?=[(])', Keyword, 'root'),
258 (r'op(?=[(])', Keyword, 'root'),
259 (r'(c(alls|oinductive)|module|reexport|use(s|_module))(?=[(])', Keyword, 'root'),
260 (r'[a-z][a-zA-Z0-9_]*(?=[(])', Text, 'root'),
261 (r'[a-z][a-zA-Z0-9_]*(?=[.])', Text, 'root'),
262 ],
264 'entityrelations': [
265 (r'(complements|extends|i(nstantiates|mp(lements|orts))|specializes)(?=[(])', Keyword),
266 # Numbers
267 (r"0'[\\]?.", Number),
268 (r'0b[01]+', Number.Bin),
269 (r'0o[0-7]+', Number.Oct),
270 (r'0x[0-9a-fA-F]+', Number.Hex),
271 (r'\d+\.?\d*((e|E)(\+|-)?\d+)?', Number),
272 # Variables
273 (r'([A-Z_][a-zA-Z0-9_]*)', Name.Variable),
274 # Atoms
275 (r"[a-z][a-zA-Z0-9_]*", Text),
276 (r"'", String, 'quoted_atom'),
277 # Strings
278 (r'"(\\\\|\\[^\\]|[^"\\])*"', String),
279 # End of entity-opening directive
280 (r'([)]\.)', Text, 'root'),
281 # Scope operator
282 (r'(::)', Operator),
283 # Punctuation
284 (r'[()\[\],.|]', Text),
285 # Comments
286 (r'%.*?\n', Comment),
287 (r'/\*(.|\n)*?\*/', Comment),
288 # Whitespace
289 (r'\n', Text),
290 (r'\s+', Text),
291 ]
292 }
294 def analyse_text(text):
295 if ':- object(' in text:
296 return 1.0
297 elif ':- protocol(' in text:
298 return 1.0
299 elif ':- category(' in text:
300 return 1.0
301 elif re.search(r'^:-\s[a-z]', text, re.M):
302 return 0.9
303 else:
304 return 0.0