Class: Octopress::Tags::Assign::Tag

Inherits:
Liquid::Tag
  • Object
show all
Defined in:
lib/octopress-assign-tag.rb

Constant Summary collapse

SYNTAX = 
/([[:word:]]+)\s*(=|\+=|\|\|=)\s*(.*)\s*/o

Instance Method Summary collapse

Constructor Details

#initialize(tag_name, markup, tokens) ⇒ Tag

Returns a new instance of Tag.



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# File 'lib/octopress-assign-tag.rb', line 11

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

Instance Method Details

#render(context) ⇒ Object 



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# File 'lib/octopress-assign-tag.rb', line 16

def render(context)
  return unless markup = TagHelpers::Conditional.parse(@markup, context)

  if markup =~ SYNTAX
    var      = $1
    operator = $2
    value    = $3

    value = TagHelpers::Var.get_value(value, context)
    return if value.nil?

    context = TagHelpers::Var.set_var(var, operator, value, context)
  else
    raise SyntaxError.new("Syntax Error in 'assign tag': #{@markup} - Valid syntax: assign [var] = [source] | filter")
  end
  ''
end