Class: LiquidPlus::CaptureTag

Inherits:
Liquid::Block
  • Object
show all
Defined in:
lib/jekyll-liquid-plus/tags/capture.rb

Constant Summary collapse

WORD_REGEX = 
'[[:word:]]'
SYNTAX = 
/(#{WORD_REGEX}+)\s*(\+=|\|\|=)?/o

Instance Method Summary collapse

Constructor Details

#initialize(tag_name, markup, tokens) ⇒ CaptureTag

Returns a new instance of CaptureTag.



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# File 'lib/jekyll-liquid-plus/tags/capture.rb', line 8

def initialize(tag_name, markup, tokens)
  @markup = markup
  super
end

Instance Method Details

#render(context) ⇒ Object 



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# File 'lib/jekyll-liquid-plus/tags/capture.rb', line 13

def render(context)
  if @markup = Conditional.parse(@markup, context)
    if @markup.strip =~ SYNTAX
      @to = $1
      @operator = $2

      output = super
      if @operator == '+=' and !context.scopes.last[@to].nil?
        context.scopes.last[@to] += output.strip 
      elsif @operator.nil? or (@operator == '||=' and context.scopes.last[@to].nil?)
        context.scopes.last[@to] = output.strip
      end

    else
      raise SyntaxError.new("Syntax Error in 'capture' - Valid syntax: capture [var]")
    end
  end
  ''
end