/*******************************************************************************
* Copyright (c) 2000, 2011 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.jdt.debug.core.IJavaArray;
import org.eclipse.jdt.debug.core.IJavaArrayType;
import org.eclipse.jdt.debug.core.IJavaPrimitiveValue;
import org.eclipse.jdt.debug.core.IJavaType;
public class ArrayAllocation extends ArrayInstruction {
private int fDimension;
private int fExprDimension;
private boolean fHasInitializer;
private IJavaArrayType[] fCachedArrayTypes;
/**
* Constructor for ArrayAllocation.
*
* @param start
*/
public ArrayAllocation(int dimension, int exprDimension,
boolean hasInitializer, int start) {
super(start);
fDimension = dimension;
fExprDimension = exprDimension;
fHasInitializer = hasInitializer;
}
/*
* @see Instruction#execute()
*/
@Override
public void execute() throws CoreException {
if (fHasInitializer) {
IJavaArray array = (IJavaArray) popValue();
pop(); // pop the type
push(array);
} else {
int[] exprDimensions = new int[fExprDimension];
for (int i = fExprDimension - 1; i >= 0; i--) {
exprDimensions[i] = ((IJavaPrimitiveValue) popValue())
.getIntValue();
}
IJavaType type = (IJavaType) pop();
fCachedArrayTypes = new IJavaArrayType[fDimension + 1];
for (int i = fDimension, lim = fDimension - fExprDimension; i > lim; i--) {
fCachedArrayTypes[i] = (IJavaArrayType) type;
type = ((IJavaArrayType) type).getComponentType();
}
IJavaArray array = createArray(fDimension, exprDimensions);
push(array);
}
}
/**
* Create and populate an array.
*/
private IJavaArray createArray(int dimension, int[] exprDimensions)
throws CoreException {
IJavaArray array = fCachedArrayTypes[dimension]
.newInstance(exprDimensions[0]);
if (exprDimensions.length > 1) {
int[] newExprDimension = new int[exprDimensions.length - 1];
for (int i = 0; i < newExprDimension.length; i++) {
newExprDimension[i] = exprDimensions[i + 1];
}
for (int i = 0; i < exprDimensions[0]; i++) {
array.setValue(i, createArray(dimension - 1, newExprDimension));
}
}
return array;
}
@Override
public String toString() {
return InstructionsEvaluationMessages.ArrayAllocation_array_allocation_1;
}
}