gnu.prolog.vm.interpreter
Class LeaveByteCodeBacktrackInfo

java.lang.Object
  gnu.prolog.vm.BacktrackInfo
      gnu.prolog.vm.interpreter.LeaveByteCodeBacktrackInfo

public class LeaveByteCodeBacktrackInfo
extends BacktrackInfo

this backtrack info is put to stack upon exit from from user defined predicate in return instruction. As result it is BacktrackInfo that is passed to user defined predicate as parameter, no other backtrack info will be passed as parameter to user defined predicate on redo.

Field Summary

Term[]	environment
BacktrackInfo	startBacktrackInfo execution state

Fields inherited from class gnu.prolog.vm.BacktrackInfo

codePosition, undoPosition

Constructor Summary

LeaveByteCodeBacktrackInfo(Term[] environment, BacktrackInfo startBacktrackInfo)
a constructor

Method Summary

Methods inherited from class gnu.prolog.vm.BacktrackInfo

undo

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

startBacktrackInfo

public BacktrackInfo startBacktrackInfo

execution state

environment

public Term[] environment

Constructor Detail

LeaveByteCodeBacktrackInfo

public LeaveByteCodeBacktrackInfo(Term[] environment,
                                  BacktrackInfo startBacktrackInfo)

a constructor