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gnu.prolog.vm.interpreter
Class CallBacktrackInfo

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

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public class CallBacktrackInfo
extends BacktrackInfo

call backtrack info

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Field Summary
Term[]	args argument list save for call
PrologCode	code code at moment of first call.
CompoundTermTag	tag

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

Constructor Summary
CallBacktrackInfo(int undoPosition, int codePosition, Term[] args, PrologCode code, CompoundTermTag tag) 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

args

public Term[] args

argument list save for call

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code

public PrologCode code

code at moment of first call. It is saved in order to shield code from predicate changes. as result on backtracking exactly same code will be used.

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tag

public CompoundTermTag tag

Constructor Detail

CallBacktrackInfo

public CallBacktrackInfo(int undoPosition,
 int codePosition,
 Term[] args,
 PrologCode code,
 CompoundTermTag tag)

a constructor

Parameters:

undoPosition -

codePosition -

args -

code -

tag -

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