Class: Twig::TokenParser::Block

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

Overview

Marks a section of a template as being reusable.

{% block head %}
  <link rel="stylesheet" href="style.css" />
  <title>{% block title %}{% endblock %} - My Webpage</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/block.rb', line 12

def parse(token)
  lineno = token.lineno
  stream = parser.stream
  name = stream.expect(Token::NAME_TYPE).value
  block = Node::Block.new(name, Node::Empty.new, lineno)

  parser.set_block(name, block)
  parser.push_local_scope
  parser.push_block_stack(name)

  if stream.next_if(Token::BLOCK_END_TYPE)
    body = parser.subparse(method(:decide_block_end), drop_needle: true)

    if (token = stream.next_if(Token::NAME_TYPE)) && token.value != name
      raise "Expected end block for #{name}, given #{token.value}"
    end
  else
    body = Node::Nodes.new({
      0 => Node::Print.new(parser.parse_expression, lineno),
    })
  end

  stream.expect(Token::BLOCK_END_TYPE)
  block.nodes[:body] = body

  parser.pop_block_stack
  parser.pop_local_scope

  Node::BlockReference.new(name, lineno)
end

#tag ⇒ Object 



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# File 'lib/twig/token_parser/block.rb', line 43

def tag
  'block'
end