| /******************************************************************************* |
| * Copyright (c) 2000, 2013 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 |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.corext.refactoring.structure; |
| |
| import java.util.ArrayList; |
| import java.util.HashSet; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Set; |
| |
| import org.eclipse.core.runtime.IProgressMonitor; |
| import org.eclipse.core.runtime.SubProgressMonitor; |
| |
| import org.eclipse.jdt.core.IField; |
| import org.eclipse.jdt.core.IJavaElement; |
| import org.eclipse.jdt.core.IMethod; |
| import org.eclipse.jdt.core.IType; |
| import org.eclipse.jdt.core.JavaModelException; |
| import org.eclipse.jdt.core.WorkingCopyOwner; |
| import org.eclipse.jdt.core.dom.ITypeBinding; |
| import org.eclipse.jdt.core.dom.MethodDeclaration; |
| import org.eclipse.jdt.core.dom.SingleVariableDeclaration; |
| import org.eclipse.jdt.core.dom.Type; |
| import org.eclipse.jdt.core.search.SearchEngine; |
| import org.eclipse.jdt.core.search.SearchMatch; |
| |
| import org.eclipse.jdt.internal.corext.refactoring.CollectingSearchRequestor; |
| import org.eclipse.jdt.internal.corext.util.SearchUtils; |
| |
| public class ReferenceFinderUtil { |
| |
| private ReferenceFinderUtil(){ |
| //no instances |
| } |
| |
| //----- referenced types - |
| |
| public static IType[] getTypesReferencedIn(IJavaElement[] elements, IProgressMonitor pm) throws JavaModelException { |
| SearchMatch[] results= getTypeReferencesIn(elements, null, pm); |
| Set<IJavaElement> referencedTypes= extractElements(results, IJavaElement.TYPE); |
| return referencedTypes.toArray(new IType[referencedTypes.size()]); |
| } |
| |
| public static IType[] getTypesReferencedIn(IJavaElement[] elements, WorkingCopyOwner owner, IProgressMonitor pm) throws JavaModelException { |
| SearchMatch[] results= getTypeReferencesIn(elements, owner, pm); |
| Set<IJavaElement> referencedTypes= extractElements(results, IJavaElement.TYPE); |
| return referencedTypes.toArray(new IType[referencedTypes.size()]); |
| } |
| |
| private static SearchMatch[] getTypeReferencesIn(IJavaElement[] elements, WorkingCopyOwner owner, IProgressMonitor pm) throws JavaModelException { |
| List<SearchMatch> referencedTypes= new ArrayList<>(); |
| pm.beginTask("", elements.length); //$NON-NLS-1$ |
| for (IJavaElement element : elements) { |
| referencedTypes.addAll(getTypeReferencesIn(element, owner, new SubProgressMonitor(pm, 1))); |
| } |
| pm.done(); |
| return referencedTypes.toArray(new SearchMatch[referencedTypes.size()]); |
| } |
| |
| private static List<SearchMatch> getTypeReferencesIn(IJavaElement element, WorkingCopyOwner owner, IProgressMonitor pm) throws JavaModelException { |
| CollectingSearchRequestor requestor= new CollectingSearchRequestor(); |
| SearchEngine engine= owner != null ? new SearchEngine(owner) : new SearchEngine(); |
| engine.searchDeclarationsOfReferencedTypes(element, requestor, pm); |
| return requestor.getResults(); |
| } |
| |
| //----- referenced fields ---- |
| |
| public static IField[] getFieldsReferencedIn(IJavaElement[] elements, IProgressMonitor pm) throws JavaModelException { |
| SearchMatch[] results= getFieldReferencesIn(elements, null, pm); |
| Set<IJavaElement> referencedFields= extractElements(results, IJavaElement.FIELD); |
| return referencedFields.toArray(new IField[referencedFields.size()]); |
| } |
| |
| public static IField[] getFieldsReferencedIn(IJavaElement[] elements, WorkingCopyOwner owner, IProgressMonitor pm) throws JavaModelException { |
| SearchMatch[] results= getFieldReferencesIn(elements, owner, pm); |
| Set<IJavaElement> referencedFields= extractElements(results, IJavaElement.FIELD); |
| return referencedFields.toArray(new IField[referencedFields.size()]); |
| } |
| |
| private static SearchMatch[] getFieldReferencesIn(IJavaElement[] elements, WorkingCopyOwner owner, IProgressMonitor pm) throws JavaModelException { |
| List<SearchMatch> referencedFields= new ArrayList<>(); |
| pm.beginTask("", elements.length); //$NON-NLS-1$ |
| for (IJavaElement element : elements) { |
| referencedFields.addAll(getFieldReferencesIn(element, owner, new SubProgressMonitor(pm, 1))); |
| } |
| pm.done(); |
| return referencedFields.toArray(new SearchMatch[referencedFields.size()]); |
| } |
| |
| private static List<SearchMatch> getFieldReferencesIn(IJavaElement element, WorkingCopyOwner owner, IProgressMonitor pm) throws JavaModelException { |
| CollectingSearchRequestor requestor= new CollectingSearchRequestor(); |
| SearchEngine engine= owner != null ? new SearchEngine(owner) : new SearchEngine(); |
| engine.searchDeclarationsOfAccessedFields(element, requestor, pm); |
| return requestor.getResults(); |
| } |
| |
| //----- referenced methods ---- |
| |
| public static IMethod[] getMethodsReferencedIn(IJavaElement[] elements, IProgressMonitor pm) throws JavaModelException { |
| SearchMatch[] results= getMethodReferencesIn(elements, null, pm); |
| Set<IJavaElement> referencedMethods= extractElements(results, IJavaElement.METHOD); |
| return referencedMethods.toArray(new IMethod[referencedMethods.size()]); |
| } |
| |
| public static IMethod[] getMethodsReferencedIn(IJavaElement[] elements, WorkingCopyOwner owner, IProgressMonitor pm) throws JavaModelException { |
| SearchMatch[] results= getMethodReferencesIn(elements, owner, pm); |
| Set<IJavaElement> referencedMethods= extractElements(results, IJavaElement.METHOD); |
| return referencedMethods.toArray(new IMethod[referencedMethods.size()]); |
| } |
| |
| private static SearchMatch[] getMethodReferencesIn(IJavaElement[] elements, WorkingCopyOwner owner, IProgressMonitor pm) throws JavaModelException { |
| List<SearchMatch> referencedMethods= new ArrayList<>(); |
| pm.beginTask("", elements.length); //$NON-NLS-1$ |
| for (IJavaElement element : elements) { |
| referencedMethods.addAll(getMethodReferencesIn(element, owner, new SubProgressMonitor(pm, 1))); |
| } |
| pm.done(); |
| return referencedMethods.toArray(new SearchMatch[referencedMethods.size()]); |
| } |
| |
| private static List<SearchMatch> getMethodReferencesIn(IJavaElement element, WorkingCopyOwner owner, IProgressMonitor pm) throws JavaModelException { |
| CollectingSearchRequestor requestor= new CollectingSearchRequestor(); |
| SearchEngine engine= owner != null ? new SearchEngine(owner) : new SearchEngine(); |
| engine.searchDeclarationsOfSentMessages(element, requestor, pm); |
| return requestor.getResults(); |
| } |
| |
| public static ITypeBinding[] getTypesReferencedInDeclarations(MethodDeclaration[] methods) { |
| Set<ITypeBinding> typesUsed= new HashSet<>(); |
| for (MethodDeclaration method : methods) { |
| typesUsed.addAll(getTypesUsedInDeclaration(method)); |
| } |
| return typesUsed.toArray(new ITypeBinding[typesUsed.size()]); |
| } |
| |
| //set of ITypeBindings |
| public static Set<ITypeBinding> getTypesUsedInDeclaration(MethodDeclaration methodDeclaration) { |
| if (methodDeclaration == null) |
| return new HashSet<>(0); |
| Set<ITypeBinding> result= new HashSet<>(); |
| ITypeBinding binding= null; |
| Type returnType= methodDeclaration.getReturnType2(); |
| if (returnType != null) { |
| binding = returnType.resolveBinding(); |
| if (binding != null) |
| result.add(binding); |
| } |
| |
| for (Iterator<SingleVariableDeclaration> iter= methodDeclaration.parameters().iterator(); iter.hasNext();) { |
| binding = iter.next().getType().resolveBinding(); |
| if (binding != null) |
| result.add(binding); |
| } |
| |
| for (Iterator<Type> iter= methodDeclaration.thrownExceptionTypes().iterator(); iter.hasNext();) { |
| binding= iter.next().resolveBinding(); |
| if (binding != null) |
| result.add(binding); |
| } |
| return result; |
| } |
| |
| /// private helpers |
| private static Set<IJavaElement> extractElements(SearchMatch[] searchResults, int elementType) { |
| Set<IJavaElement> elements= new HashSet<>(); |
| for (SearchMatch searchResult : searchResults) { |
| IJavaElement el= SearchUtils.getEnclosingJavaElement(searchResult); |
| if (el.exists() && el.getElementType() == elementType) |
| elements.add(el); |
| } |
| return elements; |
| } |
| } |