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135 lines
3.9 KiB
135 lines
3.9 KiB
""" |
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pygments.lexers.nix |
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~~~~~~~~~~~~~~~~~~~ |
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Lexers for the NixOS Nix language. |
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:copyright: Copyright 2006-2023 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, include |
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from pygments.token import Text, Comment, Operator, Keyword, Name, String, \ |
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Number, Punctuation, Literal |
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__all__ = ['NixLexer'] |
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class NixLexer(RegexLexer): |
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""" |
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For the Nix language. |
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.. versionadded:: 2.0 |
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""" |
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name = 'Nix' |
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url = 'http://nixos.org/nix/' |
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aliases = ['nixos', 'nix'] |
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filenames = ['*.nix'] |
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mimetypes = ['text/x-nix'] |
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keywords = ['rec', 'with', 'let', 'in', 'inherit', 'assert', 'if', |
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'else', 'then', '...'] |
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builtins = ['import', 'abort', 'baseNameOf', 'dirOf', 'isNull', 'builtins', |
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'map', 'removeAttrs', 'throw', 'toString', 'derivation'] |
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operators = ['++', '+', '?', '.', '!', '//', '==', |
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'!=', '&&', '||', '->', '='] |
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punctuations = ["(", ")", "[", "]", ";", "{", "}", ":", ",", "@"] |
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tokens = { |
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'root': [ |
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# comments starting with # |
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(r'#.*$', Comment.Single), |
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# multiline comments |
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(r'/\*', Comment.Multiline, 'comment'), |
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# whitespace |
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(r'\s+', Text), |
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# keywords |
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('(%s)' % '|'.join(re.escape(entry) + '\\b' for entry in keywords), Keyword), |
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# highlight the builtins |
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('(%s)' % '|'.join(re.escape(entry) + '\\b' for entry in builtins), |
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Name.Builtin), |
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(r'\b(true|false|null)\b', Name.Constant), |
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# operators |
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('(%s)' % '|'.join(re.escape(entry) for entry in operators), |
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Operator), |
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# word operators |
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(r'\b(or|and)\b', Operator.Word), |
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# punctuations |
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('(%s)' % '|'.join(re.escape(entry) for entry in punctuations), Punctuation), |
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# integers |
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(r'[0-9]+', Number.Integer), |
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# strings |
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(r'"', String.Double, 'doublequote'), |
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(r"''", String.Single, 'singlequote'), |
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# paths |
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(r'[\w.+-]*(\/[\w.+-]+)+', Literal), |
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(r'\<[\w.+-]+(\/[\w.+-]+)*\>', Literal), |
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# urls |
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(r'[a-zA-Z][a-zA-Z0-9\+\-\.]*\:[\w%/?:@&=+$,\\.!~*\'-]+', Literal), |
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# names of variables |
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(r'[\w-]+\s*=', String.Symbol), |
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(r'[a-zA-Z_][\w\'-]*', Text), |
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], |
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'comment': [ |
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(r'[^/*]+', Comment.Multiline), |
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(r'/\*', Comment.Multiline, '#push'), |
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(r'\*/', Comment.Multiline, '#pop'), |
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(r'[*/]', Comment.Multiline), |
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], |
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'singlequote': [ |
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(r"'''", String.Escape), |
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(r"''\$\{", String.Escape), |
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(r"''\n", String.Escape), |
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(r"''\r", String.Escape), |
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(r"''\t", String.Escape), |
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(r"''", String.Single, '#pop'), |
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(r'\$\{', String.Interpol, 'antiquote'), |
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(r"['$]", String.Single), |
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(r"[^'$]+", String.Single), |
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], |
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'doublequote': [ |
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(r'\\', String.Escape), |
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(r'\\"', String.Escape), |
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(r'\\$\{', String.Escape), |
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(r'"', String.Double, '#pop'), |
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(r'\$\{', String.Interpol, 'antiquote'), |
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(r'[^"]', String.Double), |
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], |
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'antiquote': [ |
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(r"\}", String.Interpol, '#pop'), |
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# TODO: we should probably escape also here ''${ \${ |
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(r"\$\{", String.Interpol, '#push'), |
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include('root'), |
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], |
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} |
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def analyse_text(text): |
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rv = 0.0 |
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# TODO: let/in |
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if re.search(r'import.+?<[^>]+>', text): |
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rv += 0.4 |
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if re.search(r'mkDerivation\s+(\(|\{|rec)', text): |
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rv += 0.4 |
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if re.search(r'=\s+mkIf\s+', text): |
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rv += 0.4 |
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if re.search(r'\{[a-zA-Z,\s]+\}:', text): |
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rv += 0.1 |
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return rv
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