Class: Twig::Node::Expression::Hash

Inherits:
Base
  • Object
show all
Includes:
SupportDefinedTest
Defined in:
lib/twig/node/expression/hash.rb

Instance Attribute Summary

Attributes inherited from Base

#attributes, #lineno, #nodes, #source_context, #tag

Instance Method Summary collapse

Methods included from SupportDefinedTest

#define_test_enabled?, #enable_defined_test

Methods inherited from Base

#explicit_parentheses?, #set_explicit_parentheses

Methods inherited from Base

#empty?, #length, #template_name, #to_s

Constructor Details

#initialize(elements, lineno) ⇒ Hash

Returns a new instance of Hash.



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# File 'lib/twig/node/expression/hash.rb', line 9

def initialize(elements, lineno)
  super(elements, {}, lineno)

  @index = -1
end

Instance Method Details

#add_element(value, key = nil) ⇒ Object

Parameters:



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# File 'lib/twig/node/expression/hash.rb', line 17

def add_element(value, key = nil)
  if key.nil?
    @index += 1
    key = Constant.new(@index, value.lineno)
  end

  nodes.add(key, value)
end

#compile(compiler) ⇒ Object 



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# File 'lib/twig/node/expression/hash.rb', line 26

def compile(compiler)
  if define_test_enabled?
    return compiler.repr(true)
  end

  compiler.
    raw('{').
    indent

  first = true

  key_value_pairs.each do |key, value|
    unless first
      compiler.raw(', ')
    end

    first = false

    unless value.is_a?(Expression::Unary::HashSpread)
      case key
      when Variable::Context
        key = Unary::StringCast.new(key, key.lineno)
      when Variable::Local
        key_value = key.attributes[:name]
        key = Constant.new(key_value, key.lineno)
      when Constant
        key.attributes[:value]
      end

      compiler.
        subcompile(key).
        raw(' => ')
    end

    compiler.
      subcompile(value)
  end

  compiler.
    outdent.
    raw('}')
end

#key_value_pairs ⇒ Object 



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# File 'lib/twig/node/expression/hash.rb', line 69

def key_value_pairs
  nodes.each_value.each_slice(2)
end