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/*******************************************************************************
* Copyright (c) 2008, 2015 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.core.dom.rewrite.astwriter;
import org.eclipse.cdt.core.dom.ast.IASTName;
import org.eclipse.cdt.core.dom.ast.IASTNode;
import org.eclipse.cdt.core.dom.ast.IASTParameterDeclaration;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTParameterDeclaration;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTSimpleTypeTemplateParameter;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTTemplateParameter;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTTemplatedTypeTemplateParameter;
import org.eclipse.cdt.core.parser.Keywords;
import org.eclipse.cdt.internal.core.dom.rewrite.commenthandler.NodeCommentMap;
/**
* Generates source code of template parameter nodes. The actual string operations are delegated
* to the <code>Scribe</code> class.
*
* @see Scribe
* @see ICPPASTTemplateParameter
* @author Emanuel Graf IFS
*/
public class TemplateParameterWriter extends NodeWriter {
private static final String GREATER_THAN = ">"; //$NON-NLS-1$
private static final String TEMPLATE_LESS_THAN = "template <"; //$NON-NLS-1$
/**
* @param scribe
* @param visitor
*/
public TemplateParameterWriter(Scribe scribe, ASTWriterVisitor visitor, NodeCommentMap commentMap) {
super(scribe, visitor, commentMap);
}
protected void writeTemplateParameter(ICPPASTTemplateParameter parameter) {
if (parameter instanceof ICPPASTParameterDeclaration) {
((IASTParameterDeclaration)((ICPPASTParameterDeclaration) parameter)).accept(visitor);
} else if (parameter instanceof ICPPASTSimpleTypeTemplateParameter) {
ICPPASTSimpleTypeTemplateParameter simple = (ICPPASTSimpleTypeTemplateParameter) parameter;
writeTemplateParameter(simple.getParameterType() == ICPPASTSimpleTypeTemplateParameter.st_class,
simple.isParameterPack(), simple.getName(), simple.getDefaultType());
} else if (parameter instanceof ICPPASTTemplatedTypeTemplateParameter) {
writeTemplatedTypeTemplateParameter((ICPPASTTemplatedTypeTemplateParameter) parameter);
}
}
private void writeTemplatedTypeTemplateParameter(ICPPASTTemplatedTypeTemplateParameter templated) {
scribe.print(TEMPLATE_LESS_THAN);
ICPPASTTemplateParameter[] params = templated.getTemplateParameters();
writeNodeList(params);
scribe.print(GREATER_THAN);
scribe.printSpace();
writeTemplateParameter(templated.getParameterType() == ICPPASTTemplatedTypeTemplateParameter.tt_class,
templated.isParameterPack(), templated.getName(), templated.getDefaultValue());
}
private void writeTemplateParameter(boolean usesClass, boolean isVariadic, IASTName name, IASTNode defaultArgument) {
scribe.print(usesClass ? Keywords.CLASS : Keywords.TYPENAME);
if (isVariadic) {
scribe.print(VAR_ARGS);
}
scribe.printSpace();
visitNodeIfNotNull(name);
if (defaultArgument != null){
scribe.print(EQUALS);
defaultArgument.accept(visitor);
}
}
}
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