rf-web/vendor/bundle/gems/rouge-3.12.0/lib/rouge/lexers/liquid.rb

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2019-10-21 08:18:17 +00:00
# -*- coding: utf-8 -*- #
# frozen_string_literal: true
module Rouge
module Lexers
class Liquid < RegexLexer
title "Liquid"
desc 'Liquid is a templating engine for Ruby (liquidmarkup.org)'
tag 'liquid'
filenames '*.liquid'
state :root do
rule %r/[^\{]+/, Text
rule %r/(\{%-?)(\s*)/ do
groups Punctuation, Text::Whitespace
push :tag_or_block
end
rule %r/(\{\{-?)(\s*)/ do
groups Punctuation, Text::Whitespace
push :output
end
rule %r/\{/, Text
end
state :tag_or_block do
# builtin logic blocks
rule %r/(if|elsif|unless|case)\b/, Keyword::Reserved, :condition
rule %r/(when)\b/, Keyword::Reserved, :when
rule %r/(else)(\s*)(-?%\})/ do
groups Keyword::Reserved, Text::Whitespace, Punctuation
pop!
end
# other builtin blocks
rule %r/(capture|(?:in|de)crement)(\s+)([^\s%]+)(\s*)(-?%\})/ do
groups Name::Tag, Text::Whitespace, Name::Variable, Text::Whitespace, Punctuation
pop!
end
rule %r/(comment)(\s*)(-?%\})/ do
groups Name::Tag, Text::Whitespace, Punctuation
push :comment
end
rule %r/(raw)(\s*)(-?%\})/ do
groups Name::Tag, Text::Whitespace, Punctuation
push :raw
end
# end of block
rule %r/(end(?:if|unless|case))(\s*)(-?%\})/ do
groups Keyword::Reserved, Text::Whitespace, Punctuation
pop!
end
rule %r/(end(?:[^\s%]+))(\s*)(-?%\})/ do
groups Name::Tag, Text::Whitespace, Punctuation
pop!
end
# builtin tags
rule %r/(assign|echo)\b/, Name::Tag, :assign
rule %r/(include|render)\b/, Name::Tag, :include
rule %r/(cycle)(\s+)(?:([^\s:]*)(\s*)(:))?(\s*)/ do |m|
token_class = case m[3]
when %r/'[^']*'/ then Str::Single
when %r/"[^"]*"/ then Str::Double
else
Name::Attribute
end
groups Name::Tag, Text::Whitespace, token_class,
Text::Whitespace, Punctuation, Text::Whitespace
push :variable_tag_markup
end
# iteration
rule %r/
(for|tablerow)(\s+)
([\w-]+)(\s+)
(in)(\s+)
(
(?: [^\s%,\|'"] | (?:"[^"]*"|'[^']*') )+
)(\s*)
/x do |m|
groups Name::Tag, Text::Whitespace, Name::Variable, Text::Whitespace,
Name::Tag, Text::Whitespace
token_class = case m[7]
when %r/'[^']*'/ then Str::Single
when %r/"[^"]*"/ then Str::Double
else
Name::Variable
end
token token_class, m[7]
token Text::Whitespace, m[8]
push :tag_markup
end
# other tags or blocks
rule %r/([^\s%]+)(\s*)/ do
groups Name::Tag, Text::Whitespace
push :tag_markup
end
end
state :output do
rule %r/(\|)(\s*)([a-zA-Z_][^\s}\|:]*)/ do
groups Punctuation, Text::Whitespace, Name::Function
push :filters
end
mixin :end_of_tag
mixin :generic
end
state :filters do
rule %r/(\|)(\s*)([a-zA-Z_][^\s%}\|:]*)/ do
groups Punctuation, Text::Whitespace, Name::Function
end
mixin :end_of_tag
mixin :end_of_block
mixin :variable_param_markup
end
state :condition do
rule %r/([=!]=|[<>]=?)/, Operator
rule %r/(and|or|contains)\b/, Operator::Word
mixin :end_of_block
mixin :generic
end
state :when do
mixin :end_of_block
mixin :generic
end
state :end_of_tag do
rule(/-?\}\}/) { token Punctuation; reset_stack }
end
state :end_of_block do
rule(/-?%\}/) { token Punctuation; reset_stack }
end
# states for unknown markup
state :param_markup do
mixin :whitespace
mixin :keyword
mixin :string
mixin :number
rule %r/([^\s=:]+)(\s*)(=|:)/ do
groups Name::Attribute, Text::Whitespace, Operator
end
rule %r/[,:]/, Punctuation
end
state :default_param_markup do
mixin :param_markup
rule %r/\S+/, Text
end
state :variable_param_markup do
mixin :param_markup
mixin :variable
rule %r/\S+/, Text
end
state :tag_markup do
rule %r/(reversed)\b/, Name::Attribute
mixin :end_of_block
mixin :default_param_markup
end
state :variable_tag_markup do
mixin :end_of_block
mixin :variable_param_markup
end
# states for different values types
state :keyword do
rule %r/(false|true|nil)\b/, Keyword::Constant
end
state :variable do
rule %r/(empty|blank|forloop\.[^\s%}\|:]+)\b/, Name::Builtin
rule %r/\.(?=\w)|\[|\]/, Punctuation
rule %r/(first|last|size)\b/, Name::Function
rule %r/[a-zA-Z_][\w-]*\??/, Name::Variable
end
state :string do
rule %r/'[^']*'/, Str::Single
rule %r/"[^"]*"/, Str::Double
end
state :number do
rule %r/-/, Operator
rule %r/\d+\.\d+/, Num::Float
rule %r/\d+/, Num::Integer
end
state :generic do
mixin :whitespace
mixin :keyword
mixin :string
mixin :number
mixin :variable
end
state :whitespace do
rule %r/[ \t]+/, Text::Whitespace
end
state :comment do
rule %r/[^\{]+/, Comment
rule %r/(\{%-?)(\s*)(endcomment)(\s*)(-?%\})/ do
groups Punctuation, Text::Whitespace, Name::Tag, Text::Whitespace, Punctuation
reset_stack
end
rule %r/\{/, Comment
end
state :raw do
rule %r/[^\{]+/, Text
rule %r/(\{%-?)(\s*)(endraw)(\s*)(-?%\})/ do
groups Punctuation, Text::Whitespace, Name::Tag, Text::Whitespace, Punctuation
reset_stack
end
rule %r/\{/, Text
end
state :assign do
rule %r/=/, Operator
rule %r/(\|)(\s*)([a-zA-Z_][^\s%\|:]*)/ do
groups Punctuation, Text::Whitespace, Name::Function
push :filters
end
mixin :end_of_block
mixin :generic
end
state :include do
rule %r/(\{\{-?)(\s*)/ do
groups Punctuation, Text::Whitespace
push :output_embed
end
rule %r/(with|for)\b/, Name::Tag
rule %r/[^\s\.]+(\.[^\s\.]+)+\b/, Name::Other
mixin :variable_tag_markup
end
state :output_embed do
rule %r/(\|)(\s*)([a-zA-Z_][^\s}\|:]*)/ do
groups Punctuation, Text::Whitespace, Name::Function
end
rule %r/-?\}\}/, Punctuation, :pop!
mixin :variable_param_markup
end
end
end
end