/*
* 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.project.dependency;
import jetbrains.mps.project.structure.modules.mappingpriorities.MappingConfig_AbstractRef;
import jetbrains.mps.project.structure.modules.mappingpriorities.MappingConfig_ExternalRef;
import jetbrains.mps.project.structure.modules.mappingpriorities.MappingConfig_RefSet;
import jetbrains.mps.project.structure.modules.mappingpriorities.MappingPriorityRule;
import jetbrains.mps.smodel.Generator;
import org.jetbrains.mps.openapi.module.SModuleReference;
import java.util.Collections;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.Set;
/**
* Pair to {@link jetbrains.mps.generator.impl.plan.ModelScanner} that walks {@link jetbrains.mps.smodel.Generator} module dependencies.
*
* @author Artem Tikhomirov
* @since 3.5
*/
public class GeneratorModuleScanner {
private final Set<SModuleReference> myReferencedGenerators = new HashSet<>();
public GeneratorModuleScanner() {
}
public void walkPriorityRules(Generator g) {
// ArrayDeque doesn't tolerate null, unfortunately
LinkedList<MappingConfig_AbstractRef> mcRefs = new LinkedList<MappingConfig_AbstractRef>();
for (MappingPriorityRule rule : g.getModuleDescriptor().getPriorityRules()) {
mcRefs.add(rule.getLeft());
mcRefs.add(rule.getRight());
}
while (!mcRefs.isEmpty()) {
MappingConfig_AbstractRef ref = mcRefs.removeFirst();
if (ref instanceof MappingConfig_RefSet) {
mcRefs.addAll(((MappingConfig_RefSet) ref).getMappingConfigs());
continue;
}
if (ref instanceof MappingConfig_ExternalRef) {
myReferencedGenerators.add(((MappingConfig_ExternalRef) ref).getGenerator());
mcRefs.add(((MappingConfig_ExternalRef) ref).getMappingConfig());
}
}
}
public Set<SModuleReference> getReferencedGenerators() {
return Collections.unmodifiableSet(myReferencedGenerators);
}
}