GNU Prolog for Java

gnu.prolog.vm.interpreter.instruction
Class IFail

java.lang.Object
  extended by gnu.prolog.vm.interpreter.instruction.Instruction
      extended by gnu.prolog.vm.interpreter.instruction.IFail
All Implemented Interfaces:
Installable

public class IFail
extends Instruction

fail instruction


Field Summary
 
Fields inherited from class gnu.prolog.vm.interpreter.instruction.Instruction
codePosition
 
Constructor Summary
IFail()
           
 
Method Summary
 int execute(ExecutionState state, BacktrackInfo backtrackInfo)
          execute call instruction within specified sate
 String toString()
          convert instruction to string
 
Methods inherited from class gnu.prolog.vm.interpreter.instruction.Instruction
install, uninstall
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

IFail

public IFail()
Method Detail

execute

public int execute(ExecutionState state,
                   BacktrackInfo backtrackInfo)
            throws PrologException
execute call instruction within specified sate

Specified by:
execute in class Instruction
Parameters:
state - state within which instruction will be executed
Returns:
instruction to caller how to execute next instruction
Throws:
PrologException - if code is throwing prolog exception

toString

public String toString()
convert instruction to string

Overrides:
toString in class Object

GNU Prolog for Java