| /******************************************************************************* |
| * Copyright (c) 2000, 2003 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Common Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/cpl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.corext.refactoring; |
| |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Comparator; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.eclipse.core.runtime.CoreException; |
| |
| import org.eclipse.jdt.core.IBuffer; |
| import org.eclipse.jdt.core.ICompilationUnit; |
| import org.eclipse.jdt.core.IField; |
| import org.eclipse.jdt.core.IImportContainer; |
| import org.eclipse.jdt.core.IJavaElement; |
| import org.eclipse.jdt.core.JavaModelException; |
| import org.eclipse.jdt.core.dom.AST; |
| import org.eclipse.jdt.core.dom.ASTNode; |
| import org.eclipse.jdt.core.dom.CompilationUnit; |
| import org.eclipse.jdt.core.dom.FieldDeclaration; |
| import org.eclipse.jdt.core.dom.VariableDeclarationFragment; |
| |
| import org.eclipse.jdt.internal.corext.Assert; |
| import org.eclipse.jdt.internal.corext.refactoring.reorg.ReorgUtils; |
| import org.eclipse.jdt.internal.corext.refactoring.structure.ASTNodeSearchUtil; |
| import org.eclipse.jdt.internal.corext.util.CodeFormatterUtil; |
| import org.eclipse.jdt.internal.corext.util.Strings; |
| |
| /** |
| * A tuple used to keep source of an element and its type. |
| * @see IJavaElement |
| * @see ISourceReference |
| */ |
| public class TypedSource { |
| |
| private final String fSource; |
| private final int fType; |
| |
| private TypedSource(String source, int type){ |
| Assert.isNotNull(source); |
| Assert.isTrue(canCreateForType(type)); |
| fSource= source; |
| fType= type; |
| } |
| |
| public static TypedSource create(String source, int type) { |
| if (source == null || ! canCreateForType(type)) |
| return null; |
| return new TypedSource(source, type); |
| } |
| |
| public String getSource() { |
| return fSource; |
| } |
| |
| public int getType() { |
| return fType; |
| } |
| |
| /* (non-Javadoc) |
| * @see java.lang.Object#equals(java.lang.Object) |
| */ |
| public boolean equals(Object other) { |
| if (! (other instanceof TypedSource)) |
| return false; |
| |
| TypedSource ts= (TypedSource)other; |
| return ts.getSource().equals(getSource()) && ts.getType() == getType(); |
| } |
| |
| /* (non-Javadoc) |
| * @see java.lang.Object#hashCode() |
| */ |
| public int hashCode() { |
| return getSource().hashCode() ^ (97 * getType()); |
| } |
| |
| private static boolean canCreateForType(int type){ |
| return type == IJavaElement.FIELD |
| || type == IJavaElement.TYPE |
| || type == IJavaElement.IMPORT_CONTAINER |
| || type == IJavaElement.IMPORT_DECLARATION |
| || type == IJavaElement.INITIALIZER |
| || type == IJavaElement.METHOD |
| || type == IJavaElement.PACKAGE_DECLARATION; |
| } |
| |
| |
| public static void sortByType(TypedSource[] typedSources){ |
| Arrays.sort(typedSources, createTypeComparator()); |
| } |
| |
| public static Comparator createTypeComparator() { |
| return new Comparator(){ |
| public int compare(Object arg0, Object arg1) { |
| return ((TypedSource)arg0).getType() - ((TypedSource)arg1).getType(); |
| } |
| }; |
| } |
| public static TypedSource[] createTypedSources(IJavaElement[] javaElements) throws CoreException { |
| //Map<ICompilationUnit, List<IJavaElement>> |
| Map grouped= ReorgUtils.groupByCompilationUnit(Arrays.asList(javaElements)); |
| List result= new ArrayList(javaElements.length); |
| for (Iterator iter= grouped.keySet().iterator(); iter.hasNext();) { |
| ICompilationUnit cu= (ICompilationUnit) iter.next(); |
| CompilationUnit cuNode= AST.parseCompilationUnit(cu, false); |
| for (Iterator iterator= ((List) grouped.get(cu)).iterator(); iterator.hasNext();) { |
| TypedSource[] ts= createTypedSources((IJavaElement) iterator.next(), cu, cuNode); |
| if (ts != null) |
| result.addAll(Arrays.asList(ts)); |
| } |
| } |
| return (TypedSource[]) result.toArray(new TypedSource[result.size()]); |
| } |
| |
| private static TypedSource[] createTypedSources(IJavaElement elem, ICompilationUnit cu, CompilationUnit cuNode) throws CoreException { |
| if (! ReorgUtils.isInsideCompilationUnit(elem)) |
| return null; |
| //import containers are different because you cannot paste them directly (there's no AST node for them) |
| if (elem.getElementType() == IJavaElement.IMPORT_CONTAINER) |
| return createTypedSourcesForImportContainer(cu, cuNode, (IImportContainer)elem); |
| //fields need to be handled differently because of the multi-declaration case |
| else if (elem.getElementType() == IJavaElement.FIELD) |
| return new TypedSource[] {create(getFieldSource((IField)elem, cu, cuNode), elem.getElementType())}; |
| return new TypedSource[] {create(getSourceOfDeclararationNode(elem, cu, cuNode), elem.getElementType())}; |
| } |
| |
| private static TypedSource[] createTypedSourcesForImportContainer(ICompilationUnit cu, CompilationUnit cuNode, IImportContainer container) throws JavaModelException, CoreException { |
| IJavaElement[] imports= container.getChildren(); |
| List result= new ArrayList(imports.length); |
| for (int i= 0; i < imports.length; i++) { |
| result.addAll(Arrays.asList(createTypedSources(imports[i], cu, cuNode))); |
| } |
| return (TypedSource[]) result.toArray(new TypedSource[result.size()]); |
| } |
| |
| private static String getFieldSource(IField field, ICompilationUnit cu, CompilationUnit cuNode) throws CoreException { |
| VariableDeclarationFragment declarationFragment= ASTNodeSearchUtil.getFieldDeclarationFragmentNode(field, cuNode); |
| FieldDeclaration declaration= ASTNodeSearchUtil.getFieldDeclarationNode(field, cuNode); |
| if (declaration.fragments().size() == 1) |
| return getSourceOfDeclararationNode(field, cu, cuNode); |
| StringBuffer buff= new StringBuffer(); |
| IBuffer buffer= cu.getBuffer(); |
| int firstFragmentOffset= ((ASTNode)declaration.fragments().get(0)).getStartPosition(); |
| buff.append(buffer.getText(declaration.getStartPosition(), firstFragmentOffset - declaration.getStartPosition())); |
| buff.append(buffer.getText(declarationFragment.getStartPosition(), declarationFragment.getLength())); |
| buff.append(";"); |
| return buff.toString(); |
| } |
| |
| private static String getSourceOfDeclararationNode(IJavaElement elem, ICompilationUnit cu, CompilationUnit cuNode) throws JavaModelException, CoreException { |
| Assert.isTrue(elem.getElementType() != IJavaElement.IMPORT_CONTAINER); |
| ASTNode[] nodes= ASTNodeSearchUtil.getDeclarationNodes(elem, cuNode); |
| if (nodes != null && nodes.length == 1) { |
| return trimIndent(cu.getBuffer().getText(nodes[0].getStartPosition(), nodes[0].getLength())); |
| } else |
| return ""; |
| } |
| |
| private static String trimIndent(String source) { |
| return Strings.trimIndentation(source, CodeFormatterUtil.getTabWidth(), false); |
| } |
| } |