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/*******************************************************************************
* Copyright (c) 2012 Google, Inc 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:
* Sergey Prigogin (Google) - initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.core.parser.util;
import org.eclipse.cdt.core.dom.ast.IASTAttribute;
import org.eclipse.cdt.core.dom.ast.IASTAttributeOwner;
import org.eclipse.cdt.core.dom.ast.IASTToken;
/**
* Collection of static methods for dealing with attributes.
* @see org.eclipse.cdt.core.dom.ast.IASTAttribute
* @see org.eclipse.cdt.core.dom.ast.IASTAttributeOwner
* @since 5.4
*/
public class AttributeUtil {
private static final String[] ATTRIBUTE_NORETURN = new String[] { "__noreturn__", "noreturn" }; //$NON-NLS-1$//$NON-NLS-2$
// Not instantiatable.
private AttributeUtil() {}
/**
* Returns {@code true} if a declarator has an attribute with one of the given names.
* The {@code names} array is assumed to be small.
*/
public static boolean hasAttribute(IASTAttributeOwner node, String[] names) {
IASTAttribute[] attributes = node.getAttributes();
for (IASTAttribute attribute : attributes) {
char[] name = attribute.getName();
for (int i = 0; i < names.length; i++) {
if (CharArrayUtils.equals(name, names[i]))
return true;
}
}
return false;
}
/**
* Returns {@code true} if the node has a "noreturn" or "__noreturn__" attribute.
*/
public static boolean hasNoreturnAttribute(IASTAttributeOwner node) {
return hasAttribute(node, ATTRIBUTE_NORETURN);
}
/**
* Returns character representation of the attribute argument, or {@code null} if the attribute
* has zero or more than one argument.
*/
public static char[] getSimpleArgument(IASTAttribute attribute) {
IASTToken argumentClause = attribute.getArgumentClause();
return argumentClause == null ? null : argumentClause.getTokenCharImage();
}
}
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