/*
* Copyright 2003-2017 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.smodel.language;
import jetbrains.mps.smodel.Language;
import jetbrains.mps.smodel.adapter.ids.MetaIdByDeclaration;
import jetbrains.mps.smodel.adapter.ids.SLanguageId;
import jetbrains.mps.smodel.adapter.structure.MetaAdapterFactory;
import jetbrains.mps.smodel.runtime.ConstraintsAspectDescriptor;
import jetbrains.mps.smodel.runtime.ILanguageAspect;
import jetbrains.mps.smodel.runtime.StructureAspectDescriptor;
import jetbrains.mps.smodel.runtime.interpreted.ConstraintsAspectInterpreted;
import jetbrains.mps.smodel.runtime.interpreted.StructureAspectInterpreted;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.mps.openapi.language.SLanguage;
import org.jetbrains.mps.openapi.module.SModuleReference;
import java.util.Collection;
import java.util.Collections;
/**
* Limited runtime of a language available in source form only.
* It shall not be used for invalid (partially built) languages.
* Its sole present use is to support migration story when we can't rely on
* languages and structures generated in the previous MPS version.
*/
class InterpretedLanguageRuntime extends LanguageRuntime {
private final Language myLang;
private final String myName;
public InterpretedLanguageRuntime(@NotNull Language l) {
myLang = l;
myName = myLang.getModuleName();
}
@Override
protected <T extends ILanguageAspect> T createAspect(Class<T> descriptorInterface) {
if (descriptorInterface == StructureAspectDescriptor.class) {
return (T) new StructureAspectInterpreted(myLang);
}
if (descriptorInterface == ConstraintsAspectDescriptor.class) {
// FIXME In fact, interpreted constraints are of no use, and ConstraintsAspectInterpreted for legacy reasons
// FIXME does a lot of job (within BaseConstraintsDescriptor) which is likely to break with interpreted (no source code) languages
// (see BaseConstraintsDescriptor#calcInheritance).
// We shall supply constraints aspect that would yield 'no constrains' (and do no initialization code)
return (T) ConstraintsAspectInterpreted.getInstance();
}
return null;
}
@Override
public String getNamespace() {
return myName;
}
@Override
public SLanguageId getId() {
return MetaIdByDeclaration.getLanguageId(myLang);
}
@Override
public int getVersion() {
return -1;
}
@Override
public Collection<? extends GeneratorRuntime> getGenerators() {
return Collections.emptyList();
}
@Override
protected void fillExtendedLanguages(Collection<SLanguage> extendedLanguages) {
for (SModuleReference mr : myLang.getModuleDescriptor().getExtendedLanguages()) {
extendedLanguages.add(MetaAdapterFactory.getLanguage(mr));
}
}
}