136 lines
3.9 KiB
Python
136 lines
3.9 KiB
Python
# -*- coding: utf-8 -*-
|
|
"""
|
|
pygments.lexers.nix
|
|
~~~~~~~~~~~~~~~~~~~
|
|
|
|
Lexers for the NixOS Nix language.
|
|
|
|
:copyright: Copyright 2006-2015 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 <http://nixos.org/nix/>`_.
|
|
|
|
.. versionadded:: 2.0
|
|
"""
|
|
|
|
name = 'Nix'
|
|
aliases = ['nixos', 'nix']
|
|
filenames = ['*.nix']
|
|
mimetypes = ['text/x-nix']
|
|
|
|
flags = re.MULTILINE | re.UNICODE
|
|
|
|
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'#.*$', Comment.Single),
|
|
|
|
# multiline comments
|
|
(r'/\*', Comment.Multiline, 'comment'),
|
|
|
|
# whitespace
|
|
(r'\s+', Text),
|
|
|
|
# keywords
|
|
('(%s)' % '|'.join(re.escape(entry) + '\\b' for entry in keywords), Keyword),
|
|
|
|
# highlight the builtins
|
|
('(%s)' % '|'.join(re.escape(entry) + '\\b' for entry in builtins),
|
|
Name.Builtin),
|
|
|
|
(r'\b(true|false|null)\b', Name.Constant),
|
|
|
|
# operators
|
|
('(%s)' % '|'.join(re.escape(entry) for entry in operators),
|
|
Operator),
|
|
|
|
# word operators
|
|
(r'\b(or|and)\b', Operator.Word),
|
|
|
|
# punctuations
|
|
('(%s)' % '|'.join(re.escape(entry) for entry in punctuations), Punctuation),
|
|
|
|
# integers
|
|
(r'[0-9]+', Number.Integer),
|
|
|
|
# strings
|
|
(r'"', String.Double, 'doublequote'),
|
|
(r"''", String.Single, 'singlequote'),
|
|
|
|
# paths
|
|
(r'[\w.+-]*(\/[\w.+-]+)+', Literal),
|
|
(r'\<[\w.+-]+(\/[\w.+-]+)*\>', Literal),
|
|
|
|
# urls
|
|
(r'[a-zA-Z][a-zA-Z0-9\+\-\.]*\:[\w%/?:@&=+$,\\.!~*\'-]+', Literal),
|
|
|
|
# names of variables
|
|
(r'[\w-]+\s*=', String.Symbol),
|
|
(r'[a-zA-Z_][\w\'-]*', Text),
|
|
|
|
],
|
|
'comment': [
|
|
(r'[^/*]+', Comment.Multiline),
|
|
(r'/\*', Comment.Multiline, '#push'),
|
|
(r'\*/', Comment.Multiline, '#pop'),
|
|
(r'[*/]', Comment.Multiline),
|
|
],
|
|
'singlequote': [
|
|
(r"'''", String.Escape),
|
|
(r"''\$\{", String.Escape),
|
|
(r"''\n", String.Escape),
|
|
(r"''\r", String.Escape),
|
|
(r"''\t", String.Escape),
|
|
(r"''", String.Single, '#pop'),
|
|
(r'\$\{', String.Interpol, 'antiquote'),
|
|
(r"[^']", String.Single),
|
|
],
|
|
'doublequote': [
|
|
(r'\\', String.Escape),
|
|
(r'\\"', String.Escape),
|
|
(r'\\$\{', String.Escape),
|
|
(r'"', String.Double, '#pop'),
|
|
(r'\$\{', String.Interpol, 'antiquote'),
|
|
(r'[^"]', String.Double),
|
|
],
|
|
'antiquote': [
|
|
(r"\}", String.Interpol, '#pop'),
|
|
# TODO: we should probably escape also here ''${ \${
|
|
(r"\$\{", String.Interpol, '#push'),
|
|
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
|