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/*******************************************************************************
* Copyright (c) 2000, 2006 QNX Software Systems and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* QNX Software Systems - Initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.internal.core.model;
import org.eclipse.cdt.core.model.CModelException;
import org.eclipse.cdt.core.model.ICElement;
import org.eclipse.cdt.core.model.IStructure;
import org.eclipse.cdt.core.model.ICModelStatus;
import org.eclipse.cdt.core.model.ITranslationUnit;
/**
* <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>
*/
public class CreateFieldOperation extends CreateMemberOperation {
/**
* Initializer for Element
*/
String fInitializer;
/**
* 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(IStructure parentElement, String name, String returnType, String initializer, boolean force) {
super(parentElement, name, returnType, force);
fInitializer = initializer;
}
/**
* @see CreateElementInCUOperation#getMainTaskName
*/
@Override
public String getMainTaskName(){
return "operation.createFieldProgress"; //$NON-NLS-1$
}
/**
* 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() {
IStructure parentElement = getStructure();
try {
ICElement[] elements = parentElement.getFields();
if (elements != null && elements.length > 0) {
createAfter(elements[elements.length - 1]);
} else {
elements = parentElement.getChildren();
if (elements != null && elements.length > 0) {
createBefore(elements[0]);
}
}
} catch (CModelException e) {
}
}
/**
* @see CreateElementInCUOperation#generateResultHandle
*/
@Override
protected ICElement generateResultHandle() {
return getStructure().getField(fName);
}
/**
* @see CreateTypeMemberOperation#verifyNameCollision
*/
@Override
protected ICModelStatus verifyNameCollision() {
return super.verifyNameCollision();
}
/* (non-Javadoc)
* @see org.eclipse.cdt.internal.core.model.CreateElementInTUOperation#generateElement(org.eclipse.cdt.core.model.ITranslationUnit)
*/
@Override
protected String generateElement(ITranslationUnit unit) throws CModelException {
StringBuffer sb = new StringBuffer();
sb.append(fReturnType).append(' ');
sb.append(fName);
if (fInitializer != null && fInitializer.length() > 0) {
sb.append(' ').append('=').append(' ');
sb.append(fInitializer);
}
sb.append(';');
return sb.toString();
}
}
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