/*******************************************************************************
* Copyright (c) 2000, 2012 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 org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.jdt.debug.core.IJavaObject;
import org.eclipse.jdt.debug.core.IJavaValue;
import org.eclipse.jdt.debug.core.IJavaVariable;
import org.eclipse.jdt.internal.debug.core.JDIDebugPlugin;
import org.eclipse.osgi.util.NLS;
/**
* Sends an message to an instance. The arguments are on the stack in reverse
* order, followed by the receiver. Pushes the result, if any, onto the stack
*/
public class SendMessage extends CompoundInstruction {
private int fArgCount;
private String fSelector;
private String fSignature;
private String fDeclaringType;
public SendMessage(String selector, String signature, int argCount,
String declaringType, int start) {
super(start);
fArgCount = argCount;
fSelector = selector;
fSignature = signature;
fDeclaringType = declaringType;
}
@Override
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();
}
Object receiver = pop();
IJavaValue result = null;
if (receiver instanceof IJavaVariable) {
receiver = ((IJavaVariable) receiver).getValue();
}
if (receiver instanceof IJavaObject) {
result = ((IJavaObject) receiver).sendMessage(fSelector,
fSignature, args, getContext().getThread(), fDeclaringType);
} else {
throw new CoreException(
new Status(
IStatus.ERROR,
JDIDebugPlugin.getUniqueIdentifier(),
IStatus.OK,
InstructionsEvaluationMessages.SendMessage_Attempt_to_send_a_message_to_a_non_object_value_1,
null));
}
setLastValue(result);
if (!fSignature.endsWith(")V")) { //$NON-NLS-1$
// only push the result if not a void method
push(result);
}
}
@Override
public String toString() {
return NLS.bind(InstructionsEvaluationMessages.SendMessage_send_message__0___1__2,
new String[] { fSelector, fSignature });
}
}