| /* |
| * Copyright 2000-2009 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. |
| */ |
| |
| /* |
| * @author max |
| */ |
| package com.intellij.extapi.psi; |
| |
| import com.intellij.lang.ASTNode; |
| import com.intellij.lang.Language; |
| import com.intellij.openapi.application.ApplicationManager; |
| import com.intellij.openapi.diagnostic.Logger; |
| import com.intellij.openapi.progress.ProgressIndicatorProvider; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.openapi.util.Key; |
| import com.intellij.openapi.util.text.StringUtil; |
| import com.intellij.openapi.vfs.VirtualFile; |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.PsiFile; |
| import com.intellij.psi.PsiInvalidElementAccessException; |
| import com.intellij.psi.PsiLock; |
| import com.intellij.psi.impl.DebugUtil; |
| import com.intellij.psi.impl.PsiManagerEx; |
| import com.intellij.psi.impl.source.PsiFileImpl; |
| import com.intellij.psi.impl.source.tree.CompositeElement; |
| import com.intellij.psi.impl.source.tree.FileElement; |
| import com.intellij.psi.impl.source.tree.RecursiveTreeElementWalkingVisitor; |
| import com.intellij.psi.impl.source.tree.SharedImplUtil; |
| import com.intellij.psi.stubs.*; |
| import com.intellij.psi.tree.IElementType; |
| import com.intellij.psi.tree.TokenSet; |
| import com.intellij.psi.util.PsiTreeUtil; |
| import com.intellij.util.ArrayFactory; |
| import org.jetbrains.annotations.NonNls; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.lang.reflect.Array; |
| |
| public class StubBasedPsiElementBase<T extends StubElement> extends ASTDelegatePsiElement { |
| public static final Key<String> CREATION_TRACE = Key.create("CREATION_TRACE"); |
| private static final Logger LOG = Logger.getInstance("#com.intellij.extapi.psi.StubBasedPsiElementBase"); |
| public static final boolean ourTraceStubAstBinding = "true".equals(System.getProperty("trace.stub.ast.binding", "false")); |
| private volatile T myStub; |
| private volatile ASTNode myNode; |
| private final IElementType myElementType; |
| |
| public StubBasedPsiElementBase(@NotNull T stub, @NotNull IStubElementType nodeType) { |
| myStub = stub; |
| myElementType = nodeType; |
| myNode = null; |
| } |
| |
| public StubBasedPsiElementBase(@NotNull ASTNode node) { |
| myNode = node; |
| myElementType = node.getElementType(); |
| } |
| |
| @Override |
| @NotNull |
| public ASTNode getNode() { |
| ASTNode node = myNode; |
| if (node == null) { |
| ApplicationManager.getApplication().assertReadAccessAllowed(); |
| PsiFileImpl file = (PsiFileImpl)getContainingFile(); |
| if (!file.isValid()) throw new PsiInvalidElementAccessException(this); |
| |
| FileElement treeElement = file.getTreeElement(); |
| StubTree stubTree = file.getStubTree(); |
| if (treeElement != null && myNode == null) { |
| return notBoundInExistingAst(file, treeElement, stubTree); |
| } |
| |
| final FileElement fileElement = file.calcTreeElement(); |
| node = myNode; |
| if (node == null) { |
| return failedToBindStubToAst(file, stubTree, fileElement); |
| } |
| } |
| |
| return node; |
| } |
| |
| private ASTNode failedToBindStubToAst(PsiFileImpl file, StubTree stubTree, FileElement fileElement) { |
| VirtualFile vFile = file.getVirtualFile(); |
| String stubString = stubTree != null ? ((PsiFileStubImpl)stubTree.getRoot()).printTree() : "is null"; |
| String astString = DebugUtil.treeToString(fileElement, true); |
| if (!ourTraceStubAstBinding) { |
| stubString = StringUtil.trimLog(stubString, 1024); |
| astString = StringUtil.trimLog(astString, 1024); |
| } |
| |
| @NonNls String message = "Failed to bind stub to AST for element " + getClass() + " in " + |
| (vFile == null ? "<unknown file>" : vFile.getPath()) + |
| "\nFile:\n" + file.toString() + "@" + System.identityHashCode(file) + |
| "\nFile stub tree:\n" + stubString + |
| "\nLoaded file AST:\n" + astString; |
| if (ourTraceStubAstBinding) { |
| message += dumpCreationTraces(fileElement); |
| } |
| throw new IllegalArgumentException(message); |
| } |
| |
| private String dumpCreationTraces(FileElement fileElement) { |
| final StringBuilder traces = new StringBuilder("\nNow " + Thread.currentThread() + "\n"); |
| traces.append("My creation trace:\n").append(getUserData(CREATION_TRACE)); |
| traces.append("AST creation traces:\n"); |
| fileElement.acceptTree(new RecursiveTreeElementWalkingVisitor(false) { |
| @Override |
| public void visitComposite(CompositeElement composite) { |
| PsiElement psi = composite.getPsi(); |
| if (psi != null) { |
| traces.append(psi.toString()).append("@").append(System.identityHashCode(psi)).append("\n"); |
| String trace = psi.getUserData(CREATION_TRACE); |
| if (trace != null) { |
| traces.append(trace).append("\n"); |
| } |
| } |
| super.visitComposite(composite); |
| } |
| }); |
| return traces.toString(); |
| } |
| |
| private ASTNode notBoundInExistingAst(PsiFileImpl file, FileElement treeElement, StubTree stubTree) { |
| @NonNls String message = "this=" + this.getClass() + "; file.isPhysical=" + file.isPhysical() + "; node=" + myNode + "; file=" + file + |
| "; tree=" + treeElement + "; stubTree=" + stubTree; |
| PsiElement each = this; |
| while (each != null) { |
| message += "\n each of class " + each.getClass(); |
| if (each instanceof StubBasedPsiElementBase) { |
| message += "; node=" + ((StubBasedPsiElementBase)each).myNode + "; stub=" + ((StubBasedPsiElementBase)each).myStub; |
| each = ((StubBasedPsiElementBase)each).getParentByStub(); |
| } else { |
| break; |
| } |
| } |
| if (ourTraceStubAstBinding) { |
| message += dumpCreationTraces(treeElement); |
| } |
| throw new AssertionError(message); |
| } |
| |
| public final void setNode(final ASTNode node) { |
| myNode = node; |
| } |
| |
| @NotNull |
| @Override |
| public Language getLanguage() { |
| return myElementType.getLanguage(); |
| } |
| |
| @Override |
| @NotNull |
| public PsiFile getContainingFile() { |
| StubElement stub = myStub; |
| if (stub != null) { |
| while (!(stub instanceof PsiFileStub)) { |
| stub = stub.getParentStub(); |
| } |
| PsiFile psi = (PsiFile)stub.getPsi(); |
| if (psi != null) { |
| return psi; |
| } |
| ApplicationManager.getApplication().assertReadAccessAllowed(); |
| synchronized (PsiLock.LOCK) { |
| if (myStub != null) { |
| throw new PsiInvalidElementAccessException(this, "no psi for file stub " + stub + ", invalidation reason=" + ((PsiFileStubImpl<?>) stub).getInvalidationReason(), null); |
| } |
| } |
| } |
| |
| PsiFile file = super.getContainingFile(); |
| if (file == null) { |
| throw new PsiInvalidElementAccessException(this); |
| } |
| |
| return file; |
| } |
| |
| @Override |
| public boolean isWritable() { |
| return getContainingFile().isWritable(); |
| } |
| |
| @Override |
| public boolean isValid() { |
| T stub = myStub; |
| if (stub != null) { |
| StubElement parent = stub.getParentStub(); |
| if (parent == null) { |
| LOG.error("No parent for stub " + stub + " of class " + stub.getClass()); |
| return false; |
| } |
| PsiElement psi = parent.getPsi(); |
| return psi != null && psi.isValid(); |
| } |
| |
| return super.isValid(); |
| } |
| |
| @Override |
| public PsiManagerEx getManager() { |
| return (PsiManagerEx)getContainingFile().getManager(); |
| } |
| |
| @Override |
| @NotNull |
| public Project getProject() { |
| return getContainingFile().getProject(); |
| } |
| |
| @Override |
| public boolean isPhysical() { |
| return getContainingFile().isPhysical(); |
| } |
| |
| @Override |
| public PsiElement getContext() { |
| T stub = myStub; |
| if (stub != null) { |
| if (!(stub instanceof PsiFileStub)) { |
| return stub.getParentStub().getPsi(); |
| } |
| } |
| return super.getContext(); |
| } |
| |
| protected final PsiElement getParentByStub() { |
| final StubElement<?> stub = getStub(); |
| if (stub != null) { |
| return stub.getParentStub().getPsi(); |
| } |
| |
| return SharedImplUtil.getParent(getNode()); |
| } |
| |
| @Override |
| public void subtreeChanged() { |
| super.subtreeChanged(); |
| setStub(null); |
| } |
| |
| protected final PsiElement getParentByTree() { |
| return SharedImplUtil.getParent(getNode()); |
| } |
| |
| @Override |
| public PsiElement getParent() { |
| return getParentByTree(); |
| } |
| |
| @NotNull |
| public IStubElementType getElementType() { |
| if (!(myElementType instanceof IStubElementType)) { |
| throw new AssertionError("Not a stub type: " + myElementType + " in " + getClass()); |
| } |
| return (IStubElementType)myElementType; |
| } |
| |
| public T getStub() { |
| ProgressIndicatorProvider.checkCanceled(); // Hope, this is called often |
| return myStub; |
| } |
| |
| public final void setStub(@Nullable T stub) { |
| myStub = stub; |
| } |
| |
| @Nullable |
| public <Psi extends PsiElement> Psi getStubOrPsiChild(final IStubElementType<? extends StubElement, Psi> elementType) { |
| T stub = myStub; |
| if (stub != null) { |
| final StubElement<Psi> element = stub.findChildStubByType(elementType); |
| if (element != null) { |
| return element.getPsi(); |
| } |
| } |
| else { |
| final ASTNode childNode = getNode().findChildByType(elementType); |
| if (childNode != null) { |
| return (Psi)childNode.getPsi(); |
| } |
| } |
| return null; |
| } |
| |
| @NotNull |
| public <Stub extends StubElement, Psi extends PsiElement> Psi getRequiredStubOrPsiChild(final IStubElementType<Stub, Psi> elementType) { |
| Psi result = getStubOrPsiChild(elementType); |
| assert result != null: "Missing required child of type " + elementType + "; tree: "+DebugUtil.psiToString(this, false); |
| return result; |
| } |
| |
| |
| public <Stub extends StubElement, Psi extends PsiElement> Psi[] getStubOrPsiChildren(final IStubElementType<Stub, Psi> elementType, Psi[] array) { |
| T stub = myStub; |
| if (stub != null) { |
| //noinspection unchecked |
| return (Psi[])stub.getChildrenByType(elementType, array); |
| } |
| else { |
| final ASTNode[] nodes = SharedImplUtil.getChildrenOfType(getNode(), elementType); |
| Psi[] psiElements = (Psi[])Array.newInstance(array.getClass().getComponentType(), nodes.length); |
| for (int i = 0; i < nodes.length; i++) { |
| psiElements[i] = (Psi)nodes[i].getPsi(); |
| } |
| return psiElements; |
| } |
| } |
| |
| public <Stub extends StubElement, Psi extends PsiElement> Psi[] getStubOrPsiChildren(final IStubElementType<Stub, Psi> elementType, ArrayFactory<Psi> f) { |
| T stub = myStub; |
| if (stub != null) { |
| //noinspection unchecked |
| return (Psi[])stub.getChildrenByType(elementType, f); |
| } |
| else { |
| final ASTNode[] nodes = SharedImplUtil.getChildrenOfType(getNode(), elementType); |
| Psi[] psiElements = f.create(nodes.length); |
| for (int i = 0; i < nodes.length; i++) { |
| psiElements[i] = (Psi)nodes[i].getPsi(); |
| } |
| return psiElements; |
| } |
| } |
| |
| public <Psi extends PsiElement> Psi[] getStubOrPsiChildren(TokenSet filter, Psi[] array) { |
| T stub = myStub; |
| if (stub != null) { |
| //noinspection unchecked |
| return (Psi[])stub.getChildrenByType(filter, array); |
| } |
| else { |
| final ASTNode[] nodes = getNode().getChildren(filter); |
| Psi[] psiElements = (Psi[])Array.newInstance(array.getClass().getComponentType(), nodes.length); |
| for (int i = 0; i < nodes.length; i++) { |
| psiElements[i] = (Psi)nodes[i].getPsi(); |
| } |
| return psiElements; |
| } |
| } |
| |
| public <Psi extends PsiElement> Psi[] getStubOrPsiChildren(TokenSet filter, ArrayFactory<Psi> f) { |
| T stub = myStub; |
| if (stub != null) { |
| //noinspection unchecked |
| return (Psi[])stub.getChildrenByType(filter, f); |
| } |
| else { |
| final ASTNode[] nodes = getNode().getChildren(filter); |
| Psi[] psiElements = f.create(nodes.length); |
| for (int i = 0; i < nodes.length; i++) { |
| psiElements[i] = (Psi)nodes[i].getPsi(); |
| } |
| return psiElements; |
| } |
| } |
| |
| @Nullable |
| protected <E extends PsiElement> E getStubOrPsiParentOfType(final Class<E> parentClass) { |
| T stub = myStub; |
| if (stub != null) { |
| //noinspection unchecked |
| return (E)stub.getParentStubOfType(parentClass); |
| } |
| return PsiTreeUtil.getParentOfType(this, parentClass); |
| } |
| |
| @Nullable |
| protected PsiElement getStubOrPsiParent() { |
| T stub = myStub; |
| if (stub != null) { |
| //noinspection unchecked |
| return stub.getParentStub().getPsi(); |
| } |
| return getParent(); |
| } |
| |
| @Override |
| protected Object clone() { |
| final StubBasedPsiElementBase stubbless = (StubBasedPsiElementBase)super.clone(); |
| stubbless.myStub = null; |
| return stubbless; |
| } |
| } |