Class: NameDisableLookupInstruction

Inherits:

Instruction

• Object
• Instruction
• NameDisableLookupInstruction

Defined in:

lib/instructions/name/name_disable_lookup.rb

Overview

Sets the value of the context attribute Interpreter#evaluate_references to false. This will persist until the next time the Interpreter evaluates a ReferencePoint; instead of attempting to look up the variable or name referred to by the ReferencePoint, it will instead push the ReferencePoint onto the :name stack.

needs: nothing

pushes: nothing

Instance Attribute Summary

Attributes inherited from Instruction

#context

Instance Method Summary

• #cleanup ⇒ Object
• #derive ⇒ Object
• #preconditions? ⇒ Boolean
• #setup ⇒ Object

Methods inherited from Instruction

all_instructions, #go, inherited, #initialize, #needs, #pushes, to_nudgecode

Constructor Details

This class inherits a constructor from Instruction

Instance Method Details

#cleanup ⇒ Object

# File 'lib/instructions/name/name_disable_lookup.rb', line 20

def cleanup
  @context.evaluate_references = false
end

#derive ⇒ Object

# File 'lib/instructions/name/name_disable_lookup.rb', line 18

def derive
end

#preconditions? ⇒ Boolean

Returns:

• (Boolean)

# File 'lib/instructions/name/name_disable_lookup.rb', line 13

def preconditions?
  true
end

#setup ⇒ Object

# File 'lib/instructions/name/name_disable_lookup.rb', line 16

def setup
end