/*******************************************************************************
* Copyright (c) 2007 Red Hat, Inc.
* Distributed under license by Red Hat, Inc. All rights reserved.
* This program is 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:
* Red Hat, Inc. - initial API and implementation
******************************************************************************/
package org.jboss.tools.common.el.internal.core.parser.token;
import java.util.ArrayList;
import java.util.Properties;
/**
*
* @author V. Kabanovich
*
*/
public class ParamUtil {
static String PARAM_HISTORY = "(_level"; //$NON-NLS-1$
static class ParamHistory extends ArrayList<String>{
private static final long serialVersionUID = 1L;
}
public static boolean isParamHistoryEmpty(Properties context) {
ParamHistory i = (ParamHistory)(context.get(PARAM_HISTORY));
return i == null || i.size() == 0;
}
public static void cleanParamHistory(Properties context) {
context.remove(PARAM_HISTORY);
}
public static void createParamHistory(Properties context) {
context.put(PARAM_HISTORY, new ParamHistory());
}
public static boolean isMethodParamContext(Properties context) {
ParamHistory i = (ParamHistory)(context.get(PARAM_HISTORY));
return i != null && i.size() > 0 && "params".equals(i.get(i.size() - 1)); //$NON-NLS-1$
}
public static boolean isArgContext(Properties context) {
ParamHistory i = (ParamHistory)(context.get(PARAM_HISTORY));
return i != null && i.size() > 0 && "arg".equals(i.get(i.size() - 1)); //$NON-NLS-1$
}
public static boolean isArrayContext(Properties context) {
ParamHistory i = (ParamHistory)(context.get(PARAM_HISTORY));
return i != null && i.size() > 0 && "array".equals(i.get(i.size() - 1)); //$NON-NLS-1$
}
public static boolean isComplexExpressionContext(Properties context) {
ParamHistory i = (ParamHistory)(context.get("(_level")); //$NON-NLS-1$
return i != null && i.size() > 0 && "expr".equals(i.get(i.size() - 1)); //$NON-NLS-1$
}
public static void closeCurrentParamContext(Properties context) {
ParamHistory i = (ParamHistory)(context.get(PARAM_HISTORY));
if(i != null && i.size() > 0) {
i.remove(i.size() - 1);
}
}
public static void openMethodParamContext(Properties context) {
ParamHistory i = (ParamHistory)(context.get("(_level")); //$NON-NLS-1$
i.add("params"); //$NON-NLS-1$
}
public static void openComplexExpressionContext(Properties context) {
ParamHistory i = (ParamHistory)(context.get("(_level")); //$NON-NLS-1$
i.add("expr"); //$NON-NLS-1$
}
public static void openArgContext(Properties context) {
ParamHistory i = (ParamHistory)(context.get("(_level")); //$NON-NLS-1$
i.add("arg"); //$NON-NLS-1$
}
public static void openArrayContext(Properties context) {
ParamHistory i = (ParamHistory)(context.get("(_level")); //$NON-NLS-1$
i.add("array"); //$NON-NLS-1$
}
}