/*
* Copyright 2003-2013 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.idea.java.psi.impl;
import com.intellij.pom.java.LanguageLevel;
import com.intellij.psi.PsiClass;
import com.intellij.psi.PsiClassType;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiManager;
import com.intellij.psi.PsiSubstitutor;
import com.intellij.psi.PsiType;
import com.intellij.psi.search.GlobalSearchScope;
import com.intellij.util.ArrayUtil;
import jetbrains.mps.idea.core.psi.impl.MPSPsiNode;
import jetbrains.mps.idea.core.psi.impl.MPSPsiNodeBase;
import org.jetbrains.annotations.NonNls;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.mps.openapi.model.SNodeId;
import java.util.ArrayList;
import java.util.List;
/**
* evgeny, 1/28/13
*/
public class MPSPsiClassifierType extends MPSPsiNode implements ComputesPsiType<PsiClassType> {
MPSPsiClassifierType(SNodeId id, String concept, String containingRole, PsiManager manager) {
super(id, concept, containingRole, manager);
addChildLast(new MPSPsiTypeParamList(manager));
}
// public PsiClass getTargetClass() {
// return getReferenceTarget("classifier", PsiClass.class);
// }
@Nullable
@Override
protected MPSPsiNodeBase getParentFor(MPSPsiNode child) {
if (child instanceof MPSPsiTypeParameter) {
return getChildOfType(MPSPsiTypeParamList.class);
}
return super.getParentFor(child);
}
@Override
public PsiClassType getPsiType() {
return new PsiClassType(LanguageLevel.JDK_1_6) { // is language level fixed for MPS code?
private PsiClass resolved;
private void resolveRef() {
if (resolved == null) {
resolved = getReferenceTarget("classifier", PsiClass.class);
}
}
@Nullable
@Override
public PsiClass resolve() {
resolveRef();
return resolved;
}
@Override
public String getClassName() {
resolveRef();
if (resolved == null) return null;
return resolved.getName();
}
@NotNull
@Override
public PsiType[] getParameters() {
MPSPsiTypeParameter[] typeParamNodes = MPSPsiClassifierType.this.getChildOfType(MPSPsiTypeParamList.class).getChildren(MPSPsiTypeParameter.class);
if (typeParamNodes == null || typeParamNodes.length == 0) {
return PsiType.EMPTY_ARRAY;
}
List<PsiType> paramTypes = new ArrayList<PsiType>(typeParamNodes.length);
for (MPSPsiTypeParameter tn : typeParamNodes) {
if (!(tn instanceof ComputesPsiType)) continue;
PsiType psiType = ((ComputesPsiType) tn).getPsiType();
// should probably put all params, even those which failed to resolve
// if (psiType == null) continue;
paramTypes.add(psiType);
}
return ArrayUtil.toObjectArray(paramTypes, PsiType.class);
}
@NotNull
@Override
public ClassResolveResult resolveGenerics() {
final PsiClass clas = resolve();
return new ClassResolveResult() {
@Override
public PsiClass getElement() {
return clas;
}
@Override
public PsiSubstitutor getSubstitutor() {
if (clas == null) return PsiSubstitutor.EMPTY;
PsiType[] params = getParameters();
PsiSubstitutor subst = PsiSubstitutor.EMPTY;
return subst.putAll(clas, params);
}
@Override
public boolean isPackagePrefixPackageReference() {
return false; //To change body of implemented methods use File | Settings | File Templates.
}
@Override
public boolean isAccessible() {
return true;
}
@Override
public boolean isStaticsScopeCorrect() {
return true;
}
@Override
public PsiElement getCurrentFileResolveScope() {
return null; //To change body of implemented methods use File | Settings | File Templates.
}
@Override
public boolean isValidResult() {
return true;
}
};
}
@NotNull
@Override
public PsiClassType rawType() {
// FIXME should we strip type params here
return this;
}
@NotNull
@Override
public GlobalSearchScope getResolveScope() {
return GlobalSearchScope.allScope(getProject());
}
@NotNull
@Override
public LanguageLevel getLanguageLevel() {
return myLanguageLevel;
}
@NotNull
@Override
public PsiClassType setLanguageLevel(@NotNull LanguageLevel languageLevel) {
return this;
}
@Override
public String getPresentableText() {
String className = getClassName();
return className != null ? className : "<unresolved ref>";
}
@Override
public String getCanonicalText() {
// very dumb
String name = getClassName();
if (name == null) {
return "NoName";
}
return name;
}
@Override
public String getInternalCanonicalText() {
return getCanonicalText();
}
@Override
public boolean isValid() {
// not clear is this is how validity is decided
// resolveRef();
// return resolved != null;
return true;
}
@Override
public boolean equalsToText(@NonNls String text) {
if (text == null) return false;
return text.equals(getClassName());
}
};
}
}