org.eclipse.jdt.debug/eval/org/eclipse/jdt/internal/debug/eval/ast/instructions/SendStaticMessage.java

/*******************************************************************************
 * Copyright (c) 2000, 2005 IBM Corporation 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:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.jdt.internal.debug.eval.ast.instructions;


import com.ibm.icu.text.MessageFormat;

import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.jdt.debug.core.IJavaClassType;
import org.eclipse.jdt.debug.core.IJavaType;
import org.eclipse.jdt.debug.core.IJavaValue;
import org.eclipse.jdt.internal.debug.core.JDIDebugPlugin;
 
/**
 * Sends a message. The arguments are on the
 * stack in reverse order, followed by the receiver.
 * Pushes the result, if any, onto the stack
 */
public class SendStaticMessage extends CompoundInstruction {
	
	private int fArgCount;
	private String fSelector;
	private String fSignature;
	private String fTypeName;
	
	public SendStaticMessage(String typeName, String selector, String signature, int argCount, int start) {
		super(start);
		fArgCount= argCount;
		fSelector= selector;
		fSignature= signature;
		fTypeName= typeName;
	}
	
	public void execute() throws CoreException {
		IJavaValue[] args = new IJavaValue[fArgCount];
		// args are in reverse order
		for (int i= fArgCount - 1; i >= 0; i--) {
			args[i] = popValue();
		}
		
		IJavaType receiver= getType(fTypeName);
		IJavaValue result;
		if (receiver instanceof IJavaClassType) {
			result= ((IJavaClassType)receiver).sendMessage(fSelector, fSignature, args, getContext().getThread());
		} else {
			throw new CoreException(new Status(IStatus.ERROR, JDIDebugPlugin.getUniqueIdentifier(), IStatus.OK, InstructionsEvaluationMessages.SendStaticMessage_Cannot_send_a_static_message_to_a_non_class_type_object_1, null)); 
		}
		setLastValue(result);
		if (!fSignature.endsWith(")V")) { //$NON-NLS-1$
			// only push the result if not a void method
			push(result);
		}
	}
	
	public String toString() {
		return MessageFormat.format(InstructionsEvaluationMessages.SendStaticMessage_send_static_message__0___1__2, new String[]{fSelector, fSignature}); 
	}
}