Class: BlockNode

Inherits:
Object
  • Object
show all
Defined in:
lib/nodes.rb

Overview

Class for statements to be evaluated as a code-block.

Instance Method Summary collapse

Constructor Details

#initialize(statements = nil) ⇒ BlockNode

Returns a new instance of BlockNode.



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# File 'lib/nodes.rb', line 88

def initialize(statements = nil)
  @block = statements
end

Instance Method Details

#evaluate(scope) ⇒ Object

Evaluate block based on scope.



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# File 'lib/nodes.rb', line 93

def evaluate(scope)
  return nil unless @block
  result = nil
  @block.each do |statement|
    result = statement.evaluate(scope)

    # Returns the result if the value is a return value. Needed for returns in nestled blocks.
    return result if result.is_a?(ReturnValue)
  end
  return result
end