/*
* Copyright (c) 2014, 2014, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package com.oracle.truffle.api.test;
import java.util.Iterator;
import org.junit.Assert;
import org.junit.Test;
import com.oracle.truffle.api.CallTarget;
import com.oracle.truffle.api.Truffle;
import com.oracle.truffle.api.TruffleRuntime;
import com.oracle.truffle.api.frame.VirtualFrame;
import com.oracle.truffle.api.nodes.Node;
import com.oracle.truffle.api.nodes.NodeInterface;
import com.oracle.truffle.api.nodes.NodeUtil;
import com.oracle.truffle.api.nodes.RootNode;
/**
* Test child fields declared with interface types instead of {@link Node} subclasses.
*/
public class InterfaceChildFieldTest {
@Test
public void testChild() {
TruffleRuntime runtime = Truffle.getRuntime();
TestChildInterface leftChild = new TestLeafNode();
TestChildInterface rightChild = new TestLeafNode();
TestChildNode parent = new TestChildNode(leftChild, rightChild);
TestRootNode rootNode = new TestRootNode(parent);
CallTarget target = runtime.createCallTarget(rootNode);
Iterator<Node> iterator = parent.getChildren().iterator();
Assert.assertEquals(leftChild, iterator.next());
Assert.assertEquals(rightChild, iterator.next());
Assert.assertFalse(iterator.hasNext());
Object result = target.call();
Assert.assertEquals(42, result);
Assert.assertEquals(4, NodeUtil.countNodes(rootNode));
Assert.assertEquals(4, NodeUtil.countNodes(NodeUtil.cloneNode(rootNode)));
}
@Test
public void testChildren() {
TruffleRuntime runtime = Truffle.getRuntime();
TestChildInterface[] children = new TestChildInterface[5];
for (int i = 0; i < children.length; i++) {
children[i] = new TestLeafNode();
}
TestChildrenNode parent = new TestChildrenNode(children);
TestRootNode rootNode = new TestRootNode(parent);
CallTarget target = runtime.createCallTarget(rootNode);
Iterator<Node> iterator = parent.getChildren().iterator();
for (int i = 0; i < children.length; i++) {
Assert.assertEquals(children[i], iterator.next());
}
Assert.assertFalse(iterator.hasNext());
Object result = target.call();
Assert.assertEquals(105, result);
Assert.assertEquals(2 + children.length, NodeUtil.countNodes(rootNode));
Assert.assertEquals(2 + children.length, NodeUtil.countNodes(NodeUtil.cloneNode(rootNode)));
}
class TestRootNode extends RootNode {
@Child private TestChildInterface child;
TestRootNode(TestChildInterface child) {
super(null);
this.child = child;
}
@Override
public Object execute(VirtualFrame frame) {
return child.executeIntf();
}
}
interface TestChildInterface extends NodeInterface {
int executeIntf();
}
class TestLeafNode extends Node implements TestChildInterface {
TestLeafNode() {
}
public int executeIntf() {
return this.replace(new TestLeaf2Node()).executeIntf();
}
}
class TestLeaf2Node extends Node implements TestChildInterface {
TestLeaf2Node() {
}
public int executeIntf() {
return 21;
}
}
class TestChildNode extends Node implements TestChildInterface {
@Child private TestChildInterface left;
@Child private TestChildInterface right;
TestChildNode(TestChildInterface left, TestChildInterface right) {
this.left = left;
this.right = right;
}
@Override
public int executeIntf() {
return left.executeIntf() + right.executeIntf();
}
}
class TestChildrenNode extends Node implements TestChildInterface {
@Children private final TestChildInterface[] children;
TestChildrenNode(TestChildInterface[] children) {
this.children = children;
}
@Override
public int executeIntf() {
int sum = 0;
for (int i = 0; i < children.length; ++i) {
sum += children[i].executeIntf();
}
return sum;
}
}
}