1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
|
"""
pygments.lexers.nix
~~~~~~~~~~~~~~~~~~~
Lexers for the NixOS Nix language.
:copyright: Copyright 2006-2024 by the Pygments team, see AUTHORS.
:license: BSD, see LICENSE for details.
"""
import re
from pygments.lexer import RegexLexer, include
from pygments.token import Text, Comment, Operator, Keyword, Name, String, \
Number, Punctuation, Literal
__all__ = ['NixLexer']
class NixLexer(RegexLexer):
"""
For the Nix language.
"""
name = 'Nix'
url = 'http://nixos.org/nix/'
aliases = ['nixos', 'nix']
filenames = ['*.nix']
mimetypes = ['text/x-nix']
version_added = '2.0'
keywords = ['rec', 'with', 'let', 'in', 'inherit', 'assert', 'if',
'else', 'then', '...']
builtins = ['import', 'abort', 'baseNameOf', 'dirOf', 'isNull', 'builtins',
'map', 'removeAttrs', 'throw', 'toString', 'derivation']
operators = ['++', '+', '?', '.', '!', '//', '==', '/',
'!=', '&&', '||', '->', '=', '<', '>', '*', '-']
punctuations = ["(", ")", "[", "]", ";", "{", "}", ":", ",", "@"]
tokens = {
'root': [
# comments starting with #
(r'#.*$', Comment.Single),
# multiline comments
(r'/\*', Comment.Multiline, 'comment'),
# whitespace
(r'\s+', Text),
# keywords
('({})'.format('|'.join(re.escape(entry) + '\\b' for entry in keywords)), Keyword),
# highlight the builtins
('({})'.format('|'.join(re.escape(entry) + '\\b' for entry in builtins)),
Name.Builtin),
(r'\b(true|false|null)\b', Name.Constant),
# floats
(r'-?(\d+\.\d*|\.\d+)([eE][-+]?\d+)?', Number.Float),
# integers
(r'-?[0-9]+', Number.Integer),
# paths
(r'[\w.+-]*(\/[\w.+-]+)+', Literal),
(r'~(\/[\w.+-]+)+', Literal),
(r'\<[\w.+-]+(\/[\w.+-]+)*\>', Literal),
# operators
('({})'.format('|'.join(re.escape(entry) for entry in operators)),
Operator),
# word operators
(r'\b(or|and)\b', Operator.Word),
(r'\{', Punctuation, 'block'),
# punctuations
('({})'.format('|'.join(re.escape(entry) for entry in punctuations)), Punctuation),
# strings
(r'"', String.Double, 'doublequote'),
(r"''", String.Multiline, 'multiline'),
# urls
(r'[a-zA-Z][a-zA-Z0-9\+\-\.]*\:[\w%/?:@&=+$,\\.!~*\'-]+', Literal),
# names of variables
(r'[\w-]+(?=\s*=)', String.Symbol),
(r'[a-zA-Z_][\w\'-]*', Text),
(r"\$\{", String.Interpol, 'antiquote'),
],
'comment': [
(r'[^/*]+', Comment.Multiline),
(r'/\*', Comment.Multiline, '#push'),
(r'\*/', Comment.Multiline, '#pop'),
(r'[*/]', Comment.Multiline),
],
'multiline': [
(r"''(\$|'|\\n|\\r|\\t|\\)", String.Escape),
(r"''", String.Multiline, '#pop'),
(r'\$\{', String.Interpol, 'antiquote'),
(r"[^'\$]+", String.Multiline),
(r"\$[^\{']", String.Multiline),
(r"'[^']", String.Multiline),
(r"\$(?=')", String.Multiline),
],
'doublequote': [
(r'\\(\\|"|\$|n)', String.Escape),
(r'"', String.Double, '#pop'),
(r'\$\{', String.Interpol, 'antiquote'),
(r'[^"\\\$]+', String.Double),
(r'\$[^\{"]', String.Double),
(r'\$(?=")', String.Double),
(r'\\', String.Double),
],
'antiquote': [
(r"\}", String.Interpol, '#pop'),
# TODO: we should probably escape also here ''${ \${
(r"\$\{", String.Interpol, '#push'),
include('root'),
],
'block': [
(r"\}", Punctuation, '#pop'),
include('root'),
],
}
def analyse_text(text):
rv = 0.0
# TODO: let/in
if re.search(r'import.+?<[^>]+>', text):
rv += 0.4
if re.search(r'mkDerivation\s+(\(|\{|rec)', text):
rv += 0.4
if re.search(r'=\s+mkIf\s+', text):
rv += 0.4
if re.search(r'\{[a-zA-Z,\s]+\}:', text):
rv += 0.1
return rv
|
