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/*******************************************************************************
* Copyright (c) 2008 Institute for Software, HSR Hochschule fuer Technik
* Rapperswil, University of applied sciences 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:
* Institute for Software - initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.internal.ui.refactoring.implementmethod;
import java.util.ArrayList;
import java.util.Collection;
import org.eclipse.cdt.core.dom.ast.IASTParameterDeclaration;
import org.eclipse.cdt.core.dom.ast.IASTSimpleDeclSpecifier;
import org.eclipse.cdt.core.dom.ast.IASTSimpleDeclaration;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTFunctionDeclarator;
import org.eclipse.cdt.internal.ui.refactoring.utils.NameHelper;
import org.eclipse.cdt.internal.ui.refactoring.utils.PseudoNameGenerator;
/**
* Manages and creates Method Parameter Infos.
*
* @author Lukas Felber
*
*/
public class ParameterHandler {
private boolean needsAditionalArgumentNames;
private PseudoNameGenerator pseudoNameGenerator;
private ArrayList<ParameterInfo> parameterInfos;
private IASTSimpleDeclaration method;
public ParameterHandler(IASTSimpleDeclaration method) {
this.method = method;
initArgumentNames();
}
public boolean needsAdditionalArgumentNames() {
return needsAditionalArgumentNames;
}
public void initArgumentNames() {
if (parameterInfos != null) {
return;
}
needsAditionalArgumentNames = false;
parameterInfos = new ArrayList<ParameterInfo>();
for (IASTParameterDeclaration actParam : getParametersFromMethodNode()) {
String actName = actParam.getDeclarator().getName().toString();
boolean isChangable = false;
if (actParam.getDeclSpecifier() instanceof IASTSimpleDeclSpecifier
&& ((IASTSimpleDeclSpecifier) actParam.getDeclSpecifier())
.getType() == IASTSimpleDeclSpecifier.t_void) {
actName = ""; //$NON-NLS-1$
isChangable = false;
} else if (actName.length() == 0) {
needsAditionalArgumentNames = true;
isChangable = true;
actName = findNameForParameter(NameHelper.getTypeName(actParam));
}
parameterInfos.add(new ParameterInfo(actParam, actName, isChangable));
}
}
private String findNameForParameter(String typeName) {
if (pseudoNameGenerator == null) {
pseudoNameGenerator = new PseudoNameGenerator();
for (IASTParameterDeclaration parameter : getParametersFromMethodNode()) {
if (parameter.getDeclarator().getName().toString().length() != 0) {
pseudoNameGenerator.addExistingName(parameter.getDeclarator().getName().toString());
}
}
}
return pseudoNameGenerator.generateNewName(typeName);
}
private IASTParameterDeclaration[] getParametersFromMethodNode() {
if (method.getDeclarators().length < 1) {
return null;
}
return ((ICPPASTFunctionDeclarator) method.getDeclarators()[0]).getParameters();
}
public Collection<ParameterInfo> getParameterInfos() {
return parameterInfos;
}
}
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