286 lines
7.0 KiB
Ruby
286 lines
7.0 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 Liquid < RegexLexer
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title "Liquid"
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desc 'Liquid is a templating engine for Ruby (liquidmarkup.org)'
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tag 'liquid'
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filenames '*.liquid'
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state :root do
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rule %r/[^\{]+/, Text
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rule %r/(\{%-?)(\s*)/ do
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groups Punctuation, Text::Whitespace
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push :tag_or_block
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end
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rule %r/(\{\{-?)(\s*)/ do
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groups Punctuation, Text::Whitespace
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push :output
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end
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rule %r/\{/, Text
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end
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state :tag_or_block do
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# builtin logic blocks
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rule %r/(if|elsif|unless|case)\b/, Keyword::Reserved, :condition
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rule %r/(when)\b/, Keyword::Reserved, :when
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rule %r/(else)(\s*)(-?%\})/ do
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groups Keyword::Reserved, Text::Whitespace, Punctuation
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pop!
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end
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# other builtin blocks
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rule %r/(capture|(?:in|de)crement)(\s+)([^\s%]+)(\s*)(-?%\})/ do
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groups Name::Tag, Text::Whitespace, Name::Variable, Text::Whitespace, Punctuation
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pop!
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end
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rule %r/(comment)(\s*)(-?%\})/ do
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groups Name::Tag, Text::Whitespace, Punctuation
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push :comment
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end
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rule %r/(raw)(\s*)(-?%\})/ do
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groups Name::Tag, Text::Whitespace, Punctuation
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push :raw
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end
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# end of block
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rule %r/(end(?:if|unless|case))(\s*)(-?%\})/ do
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groups Keyword::Reserved, Text::Whitespace, Punctuation
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pop!
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end
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rule %r/(end(?:[^\s%]+))(\s*)(-?%\})/ do
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groups Name::Tag, Text::Whitespace, Punctuation
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pop!
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end
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# builtin tags
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rule %r/(assign|echo)\b/, Name::Tag, :assign
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rule %r/(include|render)\b/, Name::Tag, :include
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rule %r/(cycle)(\s+)(?:([^\s:]*)(\s*)(:))?(\s*)/ do |m|
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token_class = case m[3]
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when %r/'[^']*'/ then Str::Single
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when %r/"[^"]*"/ then Str::Double
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else
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Name::Attribute
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end
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groups Name::Tag, Text::Whitespace, token_class,
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Text::Whitespace, Punctuation, Text::Whitespace
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push :variable_tag_markup
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end
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# iteration
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rule %r/
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(for|tablerow)(\s+)
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([\w-]+)(\s+)
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(in)(\s+)
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(
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(?: [^\s%,\|'"] | (?:"[^"]*"|'[^']*') )+
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)(\s*)
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/x do |m|
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groups Name::Tag, Text::Whitespace, Name::Variable, Text::Whitespace,
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Name::Tag, Text::Whitespace
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token_class = case m[7]
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when %r/'[^']*'/ then Str::Single
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when %r/"[^"]*"/ then Str::Double
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else
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Name::Variable
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end
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token token_class, m[7]
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token Text::Whitespace, m[8]
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push :tag_markup
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end
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# other tags or blocks
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rule %r/([^\s%]+)(\s*)/ do
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groups Name::Tag, Text::Whitespace
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push :tag_markup
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end
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end
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state :output do
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rule %r/(\|)(\s*)([a-zA-Z_][^\s}\|:]*)/ do
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groups Punctuation, Text::Whitespace, Name::Function
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push :filters
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end
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mixin :end_of_tag
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mixin :generic
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end
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state :filters do
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rule %r/(\|)(\s*)([a-zA-Z_][^\s%}\|:]*)/ do
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groups Punctuation, Text::Whitespace, Name::Function
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end
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mixin :end_of_tag
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mixin :end_of_block
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mixin :variable_param_markup
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end
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state :condition do
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rule %r/([=!]=|[<>]=?)/, Operator
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rule %r/(and|or|contains)\b/, Operator::Word
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mixin :end_of_block
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mixin :generic
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end
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state :when do
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mixin :end_of_block
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mixin :generic
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end
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state :end_of_tag do
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rule(/-?\}\}/) { token Punctuation; reset_stack }
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end
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state :end_of_block do
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rule(/-?%\}/) { token Punctuation; reset_stack }
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end
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# states for unknown markup
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state :param_markup do
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mixin :whitespace
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mixin :keyword
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mixin :string
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mixin :number
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rule %r/([^\s=:]+)(\s*)(=|:)/ do
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groups Name::Attribute, Text::Whitespace, Operator
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end
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rule %r/[,:]/, Punctuation
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end
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state :default_param_markup do
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mixin :param_markup
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rule %r/\S+/, Text
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end
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state :variable_param_markup do
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mixin :param_markup
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mixin :variable
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rule %r/\S+/, Text
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end
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state :tag_markup do
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rule %r/(reversed)\b/, Name::Attribute
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mixin :end_of_block
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mixin :default_param_markup
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end
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state :variable_tag_markup do
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mixin :end_of_block
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mixin :variable_param_markup
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end
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# states for different values types
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state :keyword do
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rule %r/(false|true|nil)\b/, Keyword::Constant
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end
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state :variable do
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rule %r/(empty|blank|forloop\.[^\s%}\|:]+)\b/, Name::Builtin
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rule %r/\.(?=\w)|\[|\]/, Punctuation
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rule %r/(first|last|size)\b/, Name::Function
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rule %r/[a-zA-Z_][\w-]*\??/, Name::Variable
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end
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state :string do
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rule %r/'[^']*'/, Str::Single
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rule %r/"[^"]*"/, Str::Double
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end
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state :number do
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rule %r/-/, Operator
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rule %r/\d+\.\d+/, Num::Float
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rule %r/\d+/, Num::Integer
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end
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state :generic do
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mixin :whitespace
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mixin :keyword
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mixin :string
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mixin :number
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mixin :variable
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end
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state :whitespace do
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rule %r/[ \t]+/, Text::Whitespace
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end
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state :comment do
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rule %r/[^\{]+/, Comment
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rule %r/(\{%-?)(\s*)(endcomment)(\s*)(-?%\})/ do
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groups Punctuation, Text::Whitespace, Name::Tag, Text::Whitespace, Punctuation
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reset_stack
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end
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rule %r/\{/, Comment
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end
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state :raw do
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rule %r/[^\{]+/, Text
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rule %r/(\{%-?)(\s*)(endraw)(\s*)(-?%\})/ do
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groups Punctuation, Text::Whitespace, Name::Tag, Text::Whitespace, Punctuation
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reset_stack
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end
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rule %r/\{/, Text
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end
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state :assign do
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rule %r/=/, Operator
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rule %r/(\|)(\s*)([a-zA-Z_][^\s%\|:]*)/ do
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groups Punctuation, Text::Whitespace, Name::Function
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push :filters
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end
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mixin :end_of_block
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mixin :generic
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end
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state :include do
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rule %r/(\{\{-?)(\s*)/ do
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groups Punctuation, Text::Whitespace
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push :output_embed
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end
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rule %r/(with|for)\b/, Name::Tag
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rule %r/[^\s\.]+(\.[^\s\.]+)+\b/, Name::Other
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mixin :variable_tag_markup
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end
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state :output_embed do
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rule %r/(\|)(\s*)([a-zA-Z_][^\s}\|:]*)/ do
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groups Punctuation, Text::Whitespace, Name::Function
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end
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rule %r/-?\}\}/, Punctuation, :pop!
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mixin :variable_param_markup
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end
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end
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end
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end
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