Class: Twig::Node::Expression::Test::Defined

Inherits:

Test::Base

• Object
• Test::Base
• Twig::Node::Expression::Test::Defined

Defined in:

lib/twig/node/expression/test/defined.rb

Overview

Checks if an expression is defined

var is defined }

Instance Method Summary

• #compile(compiler) ⇒ Object
• #initialize(node, name, arguments, lineno) ⇒ Defined constructor

  A new instance of Defined.

Constructor Details

#initialize(node, name, arguments, lineno) ⇒ Defined

Returns a new instance of Defined.

Parameters:

• node (Node::Expression::Base)
• name (TwigTest)
• arguments (Node::Base)
• lineno (Integer)

# File 'lib/twig/node/expression/test/defined.rb', line 15

def initialize(node, name, arguments, lineno)
  unless node.is_a?(SupportDefinedTest)
    raise Error::Syntax.new('The "defined" test only works with simple variables.', lineno)
  end

  node.enable_defined_test

  super
end

Instance Method Details

#compile(compiler) ⇒ Object

# File 'lib/twig/node/expression/test/defined.rb', line 25

def compile(compiler)
  compiler.
    subcompile(nodes[:node])
end