71 lines
1.8 KiB
Ruby
71 lines
1.8 KiB
Ruby
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# -*- coding: utf-8 -*- #
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# frozen_string_literal: true
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module Rouge
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module Lexers
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class TeX < RegexLexer
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title "TeX"
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desc "The TeX typesetting system"
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tag 'tex'
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aliases 'TeX', 'LaTeX', 'latex'
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filenames '*.tex', '*.aux', '*.toc', '*.sty', '*.cls'
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mimetypes 'text/x-tex', 'text/x-latex'
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def self.detect?(text)
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return true if text =~ /\A\s*\\(documentclass|input|documentstyle|relax|ProvidesPackage|ProvidesClass)/
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end
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command = /\\([a-z]+|\s+|.)/i
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state :general do
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rule /%.*$/, Comment
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rule /[{}&_^]/, Punctuation
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end
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state :root do
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rule /\\\[/, Punctuation, :displaymath
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rule /\\\(/, Punctuation, :inlinemath
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rule /\$\$/, Punctuation, :displaymath
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rule /\$/, Punctuation, :inlinemath
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rule /\\(begin|end)\{.*?\}/, Name::Tag
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rule /(\\verb)\b(\S)(.*?)(\2)/ do |m|
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groups Name::Builtin, Keyword::Pseudo, Str::Other, Keyword::Pseudo
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end
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rule command, Keyword, :command
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mixin :general
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rule /[^\\$%&_^{}]+/, Text
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end
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state :math do
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rule command, Name::Variable
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mixin :general
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rule /[0-9]+/, Num
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rule /[-=!+*\/()\[\]]/, Operator
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rule /[^=!+*\/()\[\]\\$%&_^{}0-9-]+/, Name::Builtin
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end
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state :inlinemath do
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rule /\\\)/, Punctuation, :pop!
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rule /\$/, Punctuation, :pop!
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mixin :math
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end
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state :displaymath do
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rule /\\\]/, Punctuation, :pop!
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rule /\$\$/, Punctuation, :pop!
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rule /\$/, Name::Builtin
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mixin :math
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end
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state :command do
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rule /\[.*?\]/, Name::Attribute
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rule /\*/, Keyword
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rule(//) { pop! }
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end
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end
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end
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end
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