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gnu.prolog.vm.interpreter
Class LeaveBacktrackInfo

java.lang.Object
 extended by gnu.prolog.vm.BacktrackInfo
 extended by gnu.prolog.vm.interpreter.LeaveBacktrackInfo

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public class LeaveBacktrackInfo
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.

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Field Summary
ExecutionState	executionState execution state

Fields inherited from class gnu.prolog.vm.BacktrackInfo
codePosition, undoPosition

Constructor Summary
LeaveBacktrackInfo(int undoPosition, ExecutionState executionState) 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

executionState

public ExecutionState executionState

execution state

Constructor Detail

LeaveBacktrackInfo

public LeaveBacktrackInfo(int undoPosition,
 ExecutionState executionState)

a constructor

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