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package com.oracle.truffle.api.dsl.test;

import org.junit.Assert;
import org.junit.Test;

import com.oracle.truffle.api.Truffle;
import com.oracle.truffle.api.dsl.Cached;
import com.oracle.truffle.api.dsl.Specialization;
import com.oracle.truffle.api.dsl.TypeSystemReference;
import com.oracle.truffle.api.dsl.test.FrameTestFactory.FrameDescriptorAccess1NodeGen;
import com.oracle.truffle.api.dsl.test.FrameTestFactory.FrameDescriptorAccess2NodeGen;
import com.oracle.truffle.api.dsl.test.examples.ExampleTypes;
import com.oracle.truffle.api.frame.Frame;
import com.oracle.truffle.api.frame.FrameDescriptor;
import com.oracle.truffle.api.frame.VirtualFrame;
import com.oracle.truffle.api.nodes.Node;

public class FrameTest {

    @Test
    public void testFrameDescriptorAccess1() {
        FrameDescriptorAccess1Node node = FrameDescriptorAccess1NodeGen.create();
        FrameDescriptor descriptor = new FrameDescriptor();
        VirtualFrame frame = Truffle.getRuntime().createVirtualFrame(null, descriptor);
        Assert.assertSame(frame.getFrameDescriptor(), node.execute(frame, 2));
        Assert.assertSame(frame.getFrameDescriptor(), node.execute(frame, 3));
    }

    @TypeSystemReference(ExampleTypes.class)
    abstract static class FrameDescriptorAccess1Node extends Node {

        public abstract Object execute(VirtualFrame frame, Object arg);

        @SuppressWarnings("unused")
        @Specialization
        FrameDescriptor s1(VirtualFrame frame, int value,
                        @Cached("frame.getFrameDescriptor()") FrameDescriptor descriptor) {
            return descriptor;
        }
    }

    @Test
    public void testFrameDescriptorAccess2() {
        FrameDescriptorAccess2Node node = FrameDescriptorAccess2NodeGen.create();
        FrameDescriptor descriptor = new FrameDescriptor();
        VirtualFrame frame = Truffle.getRuntime().createVirtualFrame(null, descriptor);
        Assert.assertSame(frame.getFrameDescriptor(), node.execute(frame, 2));
        Assert.assertSame(frame.getFrameDescriptor(), node.execute(frame, 3));
    }

    @TypeSystemReference(ExampleTypes.class)
    abstract static class FrameDescriptorAccess2Node extends Node {

        public abstract Object execute(Frame frame, Object arg);

        @SuppressWarnings("unused")
        @Specialization(guards = "cachedValue == value", limit = "3")
        FrameDescriptor s1(VirtualFrame frame, int value,
                        @Cached("frame.getFrameDescriptor()") FrameDescriptor descriptor,
                        @Cached("value") int cachedValue) {
            return descriptor;
        }
    }

}