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/*******************************************************************************
* 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.core;
import java.util.Iterator;
import org.eclipse.jdt.core.ICompilationUnit;
import org.eclipse.jdt.core.IField;
import org.eclipse.jdt.core.IJavaElement;
import org.eclipse.jdt.core.IJavaModelStatus;
import org.eclipse.jdt.core.IJavaModelStatusConstants;
import org.eclipse.jdt.core.IType;
import org.eclipse.jdt.core.JavaModelException;
import org.eclipse.jdt.core.dom.ASTNode;
import org.eclipse.jdt.core.dom.FieldDeclaration;
import org.eclipse.jdt.core.dom.SimpleName;
import org.eclipse.jdt.core.dom.VariableDeclarationFragment;
import org.eclipse.jdt.core.dom.rewrite.ASTRewrite;
import org.eclipse.jdt.internal.core.util.Messages;
/**
* <p>This operation creates a field declaration in a type.
*
* <p>Required Attributes:<ul>
* <li>Containing Type
* <li>The source code for the declaration. No verification of the source is
* performed.
* </ul>
*/
@SuppressWarnings("rawtypes")
public class CreateFieldOperation extends CreateTypeMemberOperation {
/**
* When executed, this operation will create a field with the given name
* in the given type with the specified source.
*
* <p>By default the new field is positioned after the last existing field
* declaration, or as the first member in the type if there are no
* field declarations.
*/
public CreateFieldOperation(IType parentElement, String source, boolean force) {
super(parentElement, source, force);
}
@Override
protected ASTNode generateElementAST(ASTRewrite rewriter, ICompilationUnit cu) throws JavaModelException {
ASTNode node = super.generateElementAST(rewriter, cu);
if (node.getNodeType() != ASTNode.FIELD_DECLARATION)
throw new JavaModelException(new JavaModelStatus(IJavaModelStatusConstants.INVALID_CONTENTS));
return node;
}
/**
* @see CreateElementInCUOperation#generateResultHandle
*/
@Override
protected IJavaElement generateResultHandle() {
return getType().getField(getASTNodeName());
}
/**
* @see CreateElementInCUOperation#getMainTaskName()
*/
@Override
public String getMainTaskName(){
return Messages.operation_createFieldProgress;
}
private VariableDeclarationFragment getFragment(ASTNode node) {
Iterator fragments = ((FieldDeclaration) node).fragments().iterator();
if (this.anchorElement != null) {
VariableDeclarationFragment fragment = null;
String fragmentName = this.anchorElement.getElementName();
while (fragments.hasNext()) {
fragment = (VariableDeclarationFragment) fragments.next();
if (fragment.getName().getIdentifier().equals(fragmentName)) {
return fragment;
}
}
return fragment;
} else {
return (VariableDeclarationFragment) fragments.next();
}
}
/**
* By default the new field is positioned after the last existing field
* declaration, or as the first member in the type if there are no
* field declarations.
*/
@Override
protected void initializeDefaultPosition() {
IType parentElement = getType();
try {
IField[] fields = parentElement.getFields();
if (fields != null && fields.length > 0) {
final IField lastField = fields[fields.length - 1];
if (parentElement.isEnum()) {
IField field = lastField;
if (!field.isEnumConstant()) {
createAfter(lastField);
}
} else {
createAfter(lastField);
}
} else {
IJavaElement[] elements = parentElement.getChildren();
if (elements != null && elements.length > 0) {
createBefore(elements[0]);
}
}
} catch (JavaModelException e) {
// type doesn't exist: ignore
}
}
/**
* @see CreateTypeMemberOperation#verifyNameCollision
*/
@Override
protected IJavaModelStatus verifyNameCollision() {
if (this.createdNode != null) {
IType type= getType();
String fieldName = getASTNodeName();
if (type.getField(fieldName).exists()) {
return new JavaModelStatus(
IJavaModelStatusConstants.NAME_COLLISION,
Messages.bind(Messages.status_nameCollision, fieldName));
}
}
return JavaModelStatus.VERIFIED_OK;
}
private String getASTNodeName() {
if (this.alteredName != null) return this.alteredName;
return getFragment(this.createdNode).getName().getIdentifier();
}
@Override
protected SimpleName rename(ASTNode node, SimpleName newName) {
VariableDeclarationFragment fragment = getFragment(node);
SimpleName oldName = fragment.getName();
fragment.setName(newName);
return oldName;
}
}
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