/*
* 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.PsiTypeParameter;
import com.intellij.psi.PsiTypeVariable;
import com.intellij.psi.PsiTypeVisitor;
import com.intellij.psi.search.GlobalSearchScope;
import jetbrains.mps.idea.core.psi.impl.MPSPsiNode;
import org.jetbrains.annotations.NonNls;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.mps.openapi.model.SNodeId;
/**
* danilla 2/11/13
*/
public class MPSPsiTypeParamRef extends MPSPsiNode implements ComputesPsiType<PsiClassType> {
public MPSPsiTypeParamRef(SNodeId id, String concept, String containingRole, PsiManager manager) {
super(id, concept, containingRole, manager);
}
@Override
public PsiClassType getPsiType() {
return new PsiClassType(LanguageLevel.JDK_1_6) {
private PsiTypeParameter resolved;
private void resolveRef() {
if (resolved == null) {
resolved = getReferenceTarget("typeVariableDeclaration", MPSPsiTypeParameter.class);
}
}
@Override
public <A> A accept(@NotNull PsiTypeVisitor<A> visitor) {
return visitor.visitClassType(this);
}
@Nullable
@Override
public PsiTypeParameter resolve() {
resolveRef();
return resolved;
}
@Override
public String getClassName() {
resolveRef();
if (resolved == null) return null;
return resolved.getName();
}
@NotNull
@Override
public PsiType[] getParameters() {
return PsiType.EMPTY_ARRAY;
}
@NotNull
@Override
public ClassResolveResult resolveGenerics() {
final PsiTypeParameter typeParameter = resolve();
return new ClassResolveResult() {
@Override
public PsiClass getElement() {
return typeParameter;
}
@Override
public PsiSubstitutor getSubstitutor() {
return PsiSubstitutor.EMPTY;
}
@Override
public boolean isPackagePrefixPackageReference() {
return false;
}
@Override
public boolean isAccessible() {
return typeParameter != null;
}
@Override
public boolean isStaticsScopeCorrect() {
return true;
}
@Override
public PsiElement getCurrentFileResolveScope() {
return null;
}
@Override
public boolean isValidResult() {
return typeParameter != null;
}
};
}
@NotNull
@Override
public PsiClassType rawType() {
return this;
}
@Override
public String getPresentableText() {
return getClassName();
}
@Override
public String getCanonicalText() {
return getClassName();
}
@Override
public String getInternalCanonicalText() {
return "Type parameter " + getClassName();
}
@Override
public boolean isValid() {
resolveRef();
return resolved != null;
}
@Override
public boolean equalsToText(@NonNls String text) {
String name = getClassName();
return name == null ? false : name.equals(text);
}
@NotNull
@Override
public GlobalSearchScope getResolveScope() {
// if it matters, must be much more narrow
return GlobalSearchScope.allScope(getProject());
}
@NotNull
@Override
public LanguageLevel getLanguageLevel() {
return myLanguageLevel;
}
@NotNull
@Override
public PsiClassType setLanguageLevel(@NotNull LanguageLevel languageLevel) {
return this;
}
};
}
}