org.eclipse.ocl.examples.debug.vm.evaluator
Interface IStepper

All Known Implementing Classes:

AbstractStepper, CallExpStepper, ElementStepper, ExpressionInOCLStepper, IfExpStepper, IterateExpStepper, LetExpStepper, LoopExpStepper, NonStepper, OperationCallExpStepper, PostStepper, PropertyCallExpStepper, VariableStepper

public interface IStepper

An IStepper provides the element-type specific strategy for a variety of actions while stepping through source code.

Method Summary

UnitLocation	createUnitLocation(IVMEvaluationEnvironment<?> evalEnv, Element element) Return the source descriptor for element.
Element	isPostStoppable(IVMRootEvaluationVisitor<?> rootVMEvaluationVisitor, Element childElement, java.lang.Object result) Return null if no suspension is required after execution of childElement gave result, else return the next element to be executed.
boolean	isPreStoppable(IVMRootEvaluationVisitor<?> rootVMEvaluationVisitor, Element element) Return true if execution may be suspended before executing element.

Method Detail

createUnitLocation

@NonNull
UnitLocation createUnitLocation(@NonNull
                                        IVMEvaluationEnvironment<?> evalEnv,
                                        @NonNull
                                        Element element)

Return the source descriptor for element.

isPostStoppable

@Nullable
Element isPostStoppable(@NonNull
                                 IVMRootEvaluationVisitor<?> rootVMEvaluationVisitor,
                                 @NonNull
                                 Element childElement,
                                 @Nullable
                                 java.lang.Object result)

Return null if no suspension is required after execution of childElement gave result, else return the next element to be executed.

isPreStoppable

boolean isPreStoppable(@NonNull
                       IVMRootEvaluationVisitor<?> rootVMEvaluationVisitor,
                       @NonNull
                       Element element)

Return true if execution may be suspended before executing element.