/*
* 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.core.psi.impl;
import com.intellij.openapi.application.ApplicationManager;
import com.intellij.openapi.util.TextRange;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiFile;
import com.intellij.psi.PsiManager;
import com.intellij.psi.PsiReference;
import com.intellij.util.IncorrectOperationException;
import jetbrains.mps.ide.project.ProjectHelper;
import jetbrains.mps.smodel.ModelAccessHelper;
import jetbrains.mps.smodel.SNodePointer;
import jetbrains.mps.util.Computable;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.mps.openapi.model.SModelReference;
import org.jetbrains.mps.openapi.model.SNodeId;
/**
* evgeny, 1/25/13
*/
public class MPSPsiRef extends MPSPsiNodeBase {
private String role;
private SModelReference model;
private SNodeId nodeId;
private String referenceText;
public MPSPsiRef(String role, SModelReference model, SNodeId nodeId, PsiManager manager) {
super(manager);
this.role = role;
this.model = model;
this.nodeId = nodeId;
}
public MPSPsiRef(String role, String referenceText, PsiManager manager) {
super(manager);
this.role = role;
this.referenceText = referenceText;
}
public String getRole() {
return role;
}
public PsiElement resolve() {
// Note: we expect that PSI clients do take read lock to resolve references
ApplicationManager.getApplication().assertReadAccessAllowed();
return new ModelAccessHelper(ProjectHelper.getModelAccess(getProject())).runReadAction(new Computable<PsiElement>() {
@Override
public PsiElement compute() {
if (model != null && nodeId != null) {
return MPSPsiProvider.getInstance(getProject()).getPsi(new SNodePointer((jetbrains.mps.smodel.SModelReference) model, nodeId));
} else {
// TODO dynamic ref
return null;
}
}
});
}
@Override
public PsiFile getContainingFile() {
return getContainingRoot();
}
public SModelReference getModelReference() {
return model;
}
public SNodeId getNodeId() {
return nodeId;
}
public String getReferenceText() {
return referenceText;
}
@Override
public PsiReference[] getReferences() {
return new PsiReference[]{getReference()};
}
@Override
public String toString() {
return "MPSPsiRef: reference in " + role;
}
@Override
public boolean isWritable() {
return true;
}
@Override
public String getText() {
if (referenceText != null) {
return referenceText;
}
PsiElement parent = getParent();
if (parent != null) {
return parent.getText();
}
return "";
}
@Override
public PsiReference getReference() {
return new MPSPsiReference();
}
public class MPSPsiReference implements PsiReference {
@Override
public PsiElement getElement() {
return MPSPsiRef.this;
}
@Override
public TextRange getRangeInElement() {
return TextRange.EMPTY_RANGE;
}
@Nullable
@Override
public PsiElement resolve() {
return MPSPsiRef.this.resolve();
}
@NotNull
@Override
public String getCanonicalText() {
return null; //To change body of implemented methods use File | Settings | File Templates.
}
@Override
public PsiElement handleElementRename(String newElementName) throws IncorrectOperationException {
throw new IncorrectOperationException();
}
@Override
public PsiElement bindToElement(@NotNull PsiElement element) throws IncorrectOperationException {
throw new IncorrectOperationException();
}
@Override
public boolean isReferenceTo(PsiElement element) {
PsiElement target = resolve();
// Just == ?
return target != null && target == element;
}
@NotNull
@Override
public Object[] getVariants() {
return new Object[0]; //To change body of implemented methods use File | Settings | File Templates.
}
@Override
public boolean isSoft() {
return false;
}
}
}