Class: Twig::TokenParser::Use

Inherits:
Base
  • Object
show all
Defined in:
lib/twig/token_parser/use.rb

Overview

Imports blocks defined in another template into the current template.

extends “base.html” % use “blocks.html” %

block title %endblock %

Instance Attribute Summary

Attributes inherited from Base

#parser

Instance Method Summary collapse

Instance Method Details

#parse(token) ⇒ Object 



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# File 'lib/twig/token_parser/use.rb', line 12

def parse(token)
  template = parser.parse_expression
  stream = parser.stream

  unless template.is_a?(Node::Expression::Constant)
    raise Error::Syntax.new(
      'The template references in a "use" statement must be a string.',
      stream.current.lineno,
      stream.source
    )
  end

  targets = {}

  if stream.next_if('with')
    loop do
      aliased = name = stream.expect(Token::NAME_TYPE).value

      if stream.next_if('as')
        aliased = stream.expect(Token::NAME_TYPE).value
      end

      targets[name] = Node::Expression::Constant.new(aliased, -1)

      unless stream.next_if(Token::PUNCTUATION_TYPE, ',')
        break
      end
    end
  end

  stream.expect(Token::BLOCK_END_TYPE)

  parser.add_trait(Node::Nodes.new({ template:, targets: Node::Nodes.new(targets) }))

  Node::Empty.new(token.lineno)
end

#tag ⇒ Object 



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# File 'lib/twig/token_parser/use.rb', line 49

def tag
  'use'
end