/*
* Copyright 2003-2016 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package jetbrains.mps.generator.template;
import jetbrains.mps.generator.runtime.TemplateContext;
import jetbrains.mps.scope.Scope;
import jetbrains.mps.smodel.IOperationContext;
import jetbrains.mps.smodel.constraints.ModelConstraints;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.mps.openapi.language.SReferenceLink;
import org.jetbrains.mps.openapi.model.SNode;
import org.jetbrains.mps.openapi.model.SNodeReference;
import java.util.List;
/**
* What Reference Macro resolution code could expect to know about outer world.
*/
public final class ReferenceMacroContext extends TemplateQueryContextWithMacro {
private final SNode myOutputNode;
private final SReferenceLink myRole;
/**
* @since 3.3
*/
public ReferenceMacroContext(@NotNull TemplateContext context, @NotNull SNode outputNode, @NotNull SNodeReference macroNode, @NotNull SReferenceLink role) {
super(context, macroNode);
myOutputNode = outputNode;
myRole = role;
}
/**
* 'outputNode' mapping
*/
@Override
public SNode getOutputNode() {
return myOutputNode;
}
/**
* "pick output <mapping label> for ( <input node> )"
* GenerationContextOp_GetOutputByLabelAndInputAndReferenceScope
*/
@Nullable
public SNode getOutputNodeByInputNodeAndMappingLabelAndOutputNodeScope(SNode inputNode, String label) {
List<SNode> outputNodes = this.getAllOutputNodesByInputNodeAndMappingLabel(inputNode, label);
if(outputNodes == null) {
return null;
}
final Scope scope = ModelConstraints.getReferenceDescriptor(getOutputNode(), myRole).getScope();
for (SNode outputNode : outputNodes) {
if (scope.contains(outputNode)) {
return outputNode;
}
}
return null;
}
}