gnu.prolog.vm.interpreter
Class CallBacktrackInfo

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

public class CallBacktrackInfo
extends BacktrackInfo

call backtrack info

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

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.

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 -