Class: Twig::ExpressionParser::Infix::Is

Inherits:
Twig::ExpressionParser::InfixExpressionParser show all
Includes:
ParsesArguments
Defined in:
lib/twig/expression_parser/infix/is.rb

Direct Known Subclasses

IsNot

Constant Summary

Constants inherited from Twig::ExpressionParser::InfixExpressionParser

Twig::ExpressionParser::InfixExpressionParser::LEFT, Twig::ExpressionParser::InfixExpressionParser::RIGHT

Instance Method Summary collapse

Methods inherited from Twig::ExpressionParser::InfixExpressionParser

#left?, #right?, #type

Methods inherited from Base

#aliases, #to_s, #type

Instance Method Details

#associativity ⇒ Object 



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# File 'lib/twig/expression_parser/infix/is.rb', line 47

def associativity
  LEFT
end

#description ⇒ Object 



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# File 'lib/twig/expression_parser/infix/is.rb', line 39

def description
  'Twig tests'
end

#name ⇒ Object 



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# File 'lib/twig/expression_parser/infix/is.rb', line 35

def name
  'is'
end

#parse(parser, left, token) ⇒ Object 



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# File 'lib/twig/expression_parser/infix/is.rb', line 9

def parse(parser, left, token)
  stream = parser.stream
  test = parser.test(left.lineno)

  arguments = nil
  if stream.test(Token::OPERATOR_TYPE, '(')
    arguments = parse_named_arguments(parser)
  elsif test.one_mandatory_argument?
    arguments = Node::Nodes.new(AutoHash.new.add(
      parser.parse_expression(precedence)
    ))
  end

  if test.name == 'defined' && left.is_a?(Node::Expression::Variable::Context) &&
     !(aliased = parser.imported_symbol(:function, left.attributes[:name])).nil?
    left = Node::Expression::MacroReference.new(
      aliased[:node].nodes[:var],
      aliased[:name],
      Node::Expression::Array.new(AutoHash.new, left.lineno),
      left.lineno
    )
  end

  test.node_class.new(left, test, arguments, parser.current_token.lineno)
end

#precedence ⇒ Object 



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# File 'lib/twig/expression_parser/infix/is.rb', line 43

def precedence
  100
end