| /******************************************************************************* |
| * Copyright (c) 2000, 2018 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| * Mateusz Wenus <mateusz.wenus@gmail.com> - [override method] generate in declaration order [code generation] - https://bugs.eclipse.org/bugs/show_bug.cgi?id=140971 |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.corext.codemanipulation; |
| |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.List; |
| |
| import org.eclipse.core.runtime.Assert; |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IProgressMonitor; |
| import org.eclipse.core.runtime.NullProgressMonitor; |
| import org.eclipse.core.runtime.SubProgressMonitor; |
| import org.eclipse.core.runtime.jobs.ISchedulingRule; |
| |
| import org.eclipse.core.resources.IWorkspaceRunnable; |
| import org.eclipse.core.resources.ResourcesPlugin; |
| |
| import org.eclipse.text.edits.MultiTextEdit; |
| import org.eclipse.text.edits.TextEdit; |
| |
| import org.eclipse.jdt.core.ICompilationUnit; |
| import org.eclipse.jdt.core.IJavaElement; |
| import org.eclipse.jdt.core.dom.ASTNode; |
| import org.eclipse.jdt.core.dom.AbstractTypeDeclaration; |
| import org.eclipse.jdt.core.dom.AnonymousClassDeclaration; |
| import org.eclipse.jdt.core.dom.CompilationUnit; |
| import org.eclipse.jdt.core.dom.IMethodBinding; |
| import org.eclipse.jdt.core.dom.ITypeBinding; |
| import org.eclipse.jdt.core.dom.IVariableBinding; |
| import org.eclipse.jdt.core.dom.MethodDeclaration; |
| import org.eclipse.jdt.core.dom.rewrite.ASTRewrite; |
| import org.eclipse.jdt.core.dom.rewrite.ImportRewrite; |
| import org.eclipse.jdt.core.dom.rewrite.ListRewrite; |
| |
| import org.eclipse.jdt.internal.core.manipulation.StubUtility; |
| import org.eclipse.jdt.internal.corext.util.DelegateEntryComparator; |
| import org.eclipse.jdt.internal.corext.util.JavaModelUtil; |
| |
| /** |
| * Workspace runnable to add delegate methods. |
| * |
| * @since 3.1 |
| */ |
| public final class AddDelegateMethodsOperation implements IWorkspaceRunnable { |
| |
| /** |
| * Represents a delegated method |
| */ |
| public static class DelegateEntry { |
| |
| public DelegateEntry(IMethodBinding delegateMethod, IVariableBinding field) { |
| Assert.isNotNull(delegateMethod); |
| Assert.isNotNull(field); |
| this.delegateMethod= delegateMethod; |
| this.field= field; |
| } |
| |
| public final IMethodBinding delegateMethod; |
| public final IVariableBinding field; |
| |
| } |
| |
| /** Should the resulting edit be applied? */ |
| private boolean fApply= true; |
| |
| /** The method binding keys for which a method was generated */ |
| private final List<IMethodBinding> fCreated= new ArrayList<>(); |
| |
| /** The resulting text edit */ |
| private TextEdit fResultingEdit= null; |
| |
| /** The insertion point, or <code>null</code> */ |
| private final IJavaElement fInsert; |
| |
| /** Should the compilation unit content be saved? */ |
| private final boolean fSave; |
| |
| /** The code generation settings to use */ |
| private final CodeGenerationSettings fSettings; |
| |
| /** The compilation unit ast node */ |
| private final CompilationUnit fASTRoot; |
| |
| private final DelegateEntry[] fDelegatesToCreate; |
| |
| /** |
| * Creates a new add delegate methods operation. |
| * |
| * @param astRoot the AST of the current compilation unit |
| * @param delegatesToCreate the delegates to create |
| * @param insert the insertion point, or <code>null</code> |
| * @param settings the code generation settings to use |
| * @param apply <code>true</code> if the resulting edit should be applied, <code>false</code> otherwise |
| * @param save <code>true</code> if the changed compilation unit should be saved, <code>false</code> otherwise |
| */ |
| public AddDelegateMethodsOperation(CompilationUnit astRoot, DelegateEntry[] delegatesToCreate, IJavaElement insert, CodeGenerationSettings settings, boolean apply, boolean save) { |
| Assert.isTrue(astRoot != null && astRoot.getTypeRoot() instanceof ICompilationUnit); |
| Assert.isTrue(delegatesToCreate != null && delegatesToCreate.length > 0); |
| Assert.isNotNull(settings); |
| fASTRoot= astRoot; |
| fInsert= insert; |
| fDelegatesToCreate= delegatesToCreate; |
| fSettings= settings; |
| fSave= save; |
| fApply= apply; |
| } |
| |
| /** |
| * Returns the method binding keys for which a method has been generated. |
| * |
| * @return the method binding keys |
| */ |
| public final String[] getCreatedMethods() { |
| final String[] keys= new String[fCreated.size()]; |
| fCreated.toArray(keys); |
| return keys; |
| } |
| |
| /** |
| * Returns the resulting text edit. |
| * |
| * @return the resulting text edit |
| */ |
| public final TextEdit getResultingEdit() { |
| return fResultingEdit; |
| } |
| |
| /** |
| * Returns the scheduling rule for this operation. |
| * |
| * @return the scheduling rule |
| */ |
| public final ISchedulingRule getSchedulingRule() { |
| return ResourcesPlugin.getWorkspace().getRoot(); |
| } |
| |
| /* |
| * @see org.eclipse.core.resources.IWorkspaceRunnable#run(org.eclipse.core.runtime.IProgressMonitor) |
| */ |
| @Override |
| public final void run(IProgressMonitor monitor) throws CoreException { |
| if (monitor == null) |
| monitor= new NullProgressMonitor(); |
| try { |
| monitor.beginTask("", 1); //$NON-NLS-1$ |
| monitor.setTaskName(CodeGenerationMessages.AddDelegateMethodsOperation_monitor_message); |
| fCreated.clear(); |
| ICompilationUnit cu= (ICompilationUnit) fASTRoot.getTypeRoot(); |
| |
| ASTRewrite astRewrite= ASTRewrite.create(fASTRoot.getAST()); |
| ImportRewrite importRewrite= StubUtility.createImportRewrite(fASTRoot, true); |
| |
| ITypeBinding parentType= fDelegatesToCreate[0].field.getDeclaringClass(); |
| |
| ASTNode typeDecl= fASTRoot.findDeclaringNode(parentType); |
| |
| ListRewrite listRewriter= null; |
| if (typeDecl instanceof AbstractTypeDeclaration) { |
| listRewriter= astRewrite.getListRewrite(typeDecl, ((AbstractTypeDeclaration) typeDecl).getBodyDeclarationsProperty()); |
| } else if (typeDecl instanceof AnonymousClassDeclaration) { |
| listRewriter= astRewrite.getListRewrite(typeDecl, AnonymousClassDeclaration.BODY_DECLARATIONS_PROPERTY); |
| } |
| |
| if (listRewriter != null) { |
| ASTNode insertion= StubUtility2.getNodeToInsertBefore(listRewriter, fInsert); |
| |
| ContextSensitiveImportRewriteContext context= new ContextSensitiveImportRewriteContext(fASTRoot, typeDecl.getStartPosition(), importRewrite); |
| |
| Arrays.sort(fDelegatesToCreate, new DelegateEntryComparator()); |
| |
| for (int i= 0; i < fDelegatesToCreate.length; i++) { |
| IMethodBinding delegateMethod= fDelegatesToCreate[i].delegateMethod; |
| IVariableBinding field= fDelegatesToCreate[i].field; |
| MethodDeclaration newMethod= StubUtility2.createDelegationStub(cu, astRewrite, importRewrite, context, delegateMethod, field, fSettings); |
| if (newMethod != null) { |
| fCreated.add(delegateMethod); |
| if (insertion != null && insertion.getParent() == typeDecl) |
| listRewriter.insertBefore(newMethod, insertion, null); |
| else |
| listRewriter.insertLast(newMethod, null); |
| } |
| } |
| fResultingEdit= new MultiTextEdit(); |
| fResultingEdit.addChild(astRewrite.rewriteAST()); |
| fResultingEdit.addChild(importRewrite.rewriteImports(new SubProgressMonitor(monitor, 1))); |
| |
| if (fApply) { |
| JavaModelUtil.applyEdit(cu, fResultingEdit, fSave, new SubProgressMonitor(monitor, 1)); |
| } |
| } |
| } finally { |
| monitor.done(); |
| } |
| } |
| } |