Package jetbrains.mps.generator.impl.plan

Class CheckpointState

java.lang.Object

jetbrains.mps.generator.impl.plan.CheckpointState

public class CheckpointState
extends Object

Keep information about mapping labels known at checkpoint step. CheckpointState represents state at a given Checkpoint. Model-wide state that records states for all checkpoints of the given model is accessible though ModelCheckpoints

Since:

3.3

Constructor Summary

Constructors

Constructor	Description
CheckpointState(SModel checkpointModel, CheckpointIdentity prevCheckpoint, CheckpointIdentity cp)

Method Summary

Modifier and Type	Method	Description
CheckpointIdentity	getCheckpoint()
SModel	getCheckpointModel()
SNode	getCopiedOutput(SNode input)
Collection<String>	getMappingLabels()
CheckpointIdentity	getOriginCheckpoint()
Collection<SNode>	getOutput(String mappingLabel, SNode input)
SNode	getOutputIfSingle(String mappingLabel, SNode input)
List<SNode>	getOutputWithoutInput(String mappingLabel)

Methods inherited from class java.lang.Object

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

Constructor Detail

CheckpointState

public CheckpointState(@NotNull
                       SModel checkpointModel,
                       @Nullable
                       CheckpointIdentity prevCheckpoint,
                       @NotNull
                       CheckpointIdentity cp)

Method Detail

getCheckpointModel

public SModel getCheckpointModel()

getCheckpoint

public CheckpointIdentity getCheckpoint()

Returns:

identity of a checkpoint for the model kept in this state.

getOriginCheckpoint

@Nullable
public CheckpointIdentity getOriginCheckpoint()

Returns:

identity of a checkpoint model that served as an input to get this state's checkpoint model, or null if there were no checkpoints during transformation prior to state's checkpoint (i.e. original model served as an input)

getMappingLabels

@NotNull
public Collection<String> getMappingLabels()

getCopiedOutput

@Nullable
public SNode getCopiedOutput(SNode input)

Parameters:

input - reference target that generally belongs to a preceding checkpoints (not necessarily immediate origin CP, though). In case model of input node is separated from CP of this state object by few other CPs, it's caller responsibility to walk them backwards. IMPORTANT: it's assumed this CP state is of the input node's model, i.e. crossModelEnv.getState(input.getModel()).find(==getCheckpoint())

Returns:

null if there's no node in this CP that records given node as it's origin.

getOutput

@NotNull
public Collection<SNode> getOutput(String mappingLabel,
                                   SNode input)

getOutputIfSingle

@Nullable
public SNode getOutputIfSingle(String mappingLabel,
                               SNode input)

getOutputWithoutInput

@NotNull
public List<SNode> getOutputWithoutInput(String mappingLabel)