| /******************************************************************************* |
| * Copyright (c) 2014, 2019 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 |
| * Red Hat Inc. - modified to use TypeParametersFixCore |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.corext.fix; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.eclipse.jdt.core.compiler.IProblem; |
| import org.eclipse.jdt.core.dom.ASTNode; |
| import org.eclipse.jdt.core.dom.ASTVisitor; |
| import org.eclipse.jdt.core.dom.CompilationUnit; |
| import org.eclipse.jdt.core.dom.ITypeBinding; |
| import org.eclipse.jdt.core.dom.ParameterizedType; |
| |
| import org.eclipse.jdt.ui.cleanup.ICleanUpFix; |
| import org.eclipse.jdt.ui.text.java.IProblemLocation; |
| |
| import org.eclipse.jdt.internal.ui.text.correction.IProblemLocationCore; |
| import org.eclipse.jdt.internal.ui.text.correction.ProblemLocation; |
| |
| public class TypeParametersFix extends CompilationUnitRewriteOperationsFix { |
| |
| public static final class InsertTypeArgumentsVisitor extends ASTVisitor { |
| |
| private final ArrayList<ASTNode> fNodes; |
| |
| public InsertTypeArgumentsVisitor(ArrayList<ASTNode> nodes) { |
| fNodes= nodes; |
| } |
| |
| @Override |
| public boolean visit(ParameterizedType createdType) { |
| if (createdType == null || createdType.typeArguments().size() != 0) { |
| return true; |
| } |
| |
| ITypeBinding binding= createdType.resolveBinding(); |
| if (binding == null) { |
| return true; |
| } |
| |
| ITypeBinding[] typeArguments= binding.getTypeArguments(); |
| if (typeArguments.length == 0) { |
| return true; |
| } |
| |
| fNodes.add(createdType); |
| return true; |
| } |
| } |
| |
| public static TypeParametersFix createInsertInferredTypeArgumentsFix(CompilationUnit compilationUnit, ParameterizedType node) { |
| if (node == null) |
| return null; |
| |
| final ArrayList<ASTNode> changedNodes= new ArrayList<>(); |
| node.accept(new InsertTypeArgumentsVisitor(changedNodes)); |
| |
| if (changedNodes.isEmpty()) |
| return null; |
| |
| CompilationUnitRewriteOperationsFixCore.CompilationUnitRewriteOperation op= new TypeParametersFixCore.InsertTypeArgumentsOperation(new ParameterizedType[] { node }); |
| return new TypeParametersFix(FixMessages.TypeParametersFix_insert_inferred_type_arguments_name, compilationUnit, |
| new CompilationUnitRewriteOperationsFixCore.CompilationUnitRewriteOperation[] { op }); |
| } |
| |
| public static TypeParametersFix createRemoveRedundantTypeArgumentsFix(CompilationUnit compilationUnit, IProblemLocation problem) { |
| int id= problem.getProblemId(); |
| if (id == IProblem.RedundantSpecificationOfTypeArguments) { |
| IProblemLocationCore problemLocation= (ProblemLocation)problem; |
| ParameterizedType parameterizedType= TypeParametersFixCore.getParameterizedType(compilationUnit, problemLocation); |
| if (parameterizedType == null) |
| return null; |
| TypeParametersFixCore.RemoveTypeArgumentsOperation operation= new TypeParametersFixCore.RemoveTypeArgumentsOperation(parameterizedType); |
| return new TypeParametersFix(FixMessages.TypeParametersFix_remove_redundant_type_arguments_name, compilationUnit, |
| new CompilationUnitRewriteOperationsFixCore.CompilationUnitRewriteOperation[] { operation }); |
| } |
| return null; |
| } |
| |
| public static ICleanUpFix createCleanUp(CompilationUnit compilationUnit, boolean insertInferredTypeArguments, boolean removeRedundantTypeArguments) { |
| |
| IProblem[] problems= compilationUnit.getProblems(); |
| IProblemLocation[] locations= new IProblemLocation[problems.length]; |
| for (int i= 0; i < problems.length; i++) { |
| locations[i]= new ProblemLocation(problems[i]); |
| } |
| |
| return createCleanUp(compilationUnit, locations, |
| insertInferredTypeArguments, |
| removeRedundantTypeArguments); |
| } |
| |
| public static ICleanUpFix createCleanUp(CompilationUnit compilationUnit, IProblemLocation[] problems, boolean insertInferredTypeArguments, boolean removeRedundantTypeArguments) { |
| |
| if (insertInferredTypeArguments) { |
| final ArrayList<ASTNode> changedNodes= new ArrayList<>(); |
| compilationUnit.accept(new InsertTypeArgumentsVisitor(changedNodes)); |
| |
| if (changedNodes.isEmpty()) |
| return null; |
| |
| CompilationUnitRewriteOperationsFixCore.CompilationUnitRewriteOperation op= |
| new TypeParametersFixCore.InsertTypeArgumentsOperation(changedNodes.toArray(new ParameterizedType[changedNodes.size()])); |
| return new TypeParametersFix(FixMessages.TypeParametersFix_insert_inferred_type_arguments_name, compilationUnit, |
| new CompilationUnitRewriteOperationsFixCore.CompilationUnitRewriteOperation[] { op }); |
| |
| } else if (removeRedundantTypeArguments) { |
| List<CompilationUnitRewriteOperationsFixCore.CompilationUnitRewriteOperation> result= new ArrayList<>(); |
| for (IProblemLocation location : problems) { |
| IProblemLocationCore problem= (ProblemLocation)location; |
| int id= problem.getProblemId(); |
| |
| if (id == IProblem.RedundantSpecificationOfTypeArguments) { |
| ParameterizedType parameterizedType= TypeParametersFixCore.getParameterizedType(compilationUnit, problem); |
| if (parameterizedType == null) |
| return null; |
| result.add(new TypeParametersFixCore.RemoveTypeArgumentsOperation(parameterizedType)); |
| } |
| } |
| if (!result.isEmpty()) { |
| return new TypeParametersFix(FixMessages.TypeParametersFix_remove_redundant_type_arguments_name, compilationUnit, |
| result.toArray(new CompilationUnitRewriteOperationsFixCore.CompilationUnitRewriteOperation[result.size()])); |
| } |
| } |
| return null; |
| } |
| |
| protected TypeParametersFix(String name, CompilationUnit compilationUnit, CompilationUnitRewriteOperationsFixCore.CompilationUnitRewriteOperation[] fixRewriteOperations) { |
| super(name, compilationUnit, fixRewriteOperations); |
| } |
| } |