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comparison graal/com.oracle.truffle.api.test/src/com/oracle/truffle/api/test/FrameTest.java @ 13875:042a2d972174

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support frame slot removal
author Michael Haupt <michael.haupt@oracle.com>
date Wed, 05 Feb 2014 11:40:13 +0100
parents 193e3917dc07
children a08b8694f556
comparison
equal deleted inserted replaced
13870:d04be74665fb 13875:042a2d972174
35 * The frame is the preferred data structure for passing values between nodes. It can in particular 35 * The frame is the preferred data structure for passing values between nodes. It can in particular
36 * be used for storing the values of local variables of the guest language. The 36 * be used for storing the values of local variables of the guest language. The
37 * {@link FrameDescriptor} represents the current structure of the frame. The method 37 * {@link FrameDescriptor} represents the current structure of the frame. The method
38 * {@link FrameDescriptor#addFrameSlot(Object, FrameSlotKind)} can be used to create predefined 38 * {@link FrameDescriptor#addFrameSlot(Object, FrameSlotKind)} can be used to create predefined
39 * frame slots. The setter and getter methods in the {@link Frame} class can be used to access the 39 * frame slots. The setter and getter methods in the {@link Frame} class can be used to access the
40 * current value of a particular frame slot. 40 * current value of a particular frame slot. Values can be removed from a frame via the
41 * {@link FrameDescriptor#removeFrameSlot(Object)} method.
41 * </p> 42 * </p>
42 * 43 *
43 * <p> 44 * <p>
44 * There are five primitive types for slots available: {@link java.lang.Boolean}, 45 * There are five primitive types for slots available: {@link java.lang.Boolean},
45 * {@link java.lang.Integer}, {@link java.lang.Long}, {@link java.lang.Float}, and 46 * {@link java.lang.Integer}, {@link java.lang.Long}, {@link java.lang.Float}, and
62 63
63 @Test 64 @Test
64 public void test() { 65 public void test() {
65 TruffleRuntime runtime = Truffle.getRuntime(); 66 TruffleRuntime runtime = Truffle.getRuntime();
66 FrameDescriptor frameDescriptor = new FrameDescriptor(); 67 FrameDescriptor frameDescriptor = new FrameDescriptor();
67 FrameSlot slot = frameDescriptor.addFrameSlot("localVar", FrameSlotKind.Int); 68 String varName = "localVar";
69 FrameSlot slot = frameDescriptor.addFrameSlot(varName, FrameSlotKind.Int);
68 TestRootNode rootNode = new TestRootNode(frameDescriptor, new AssignLocal(slot), new ReadLocal(slot)); 70 TestRootNode rootNode = new TestRootNode(frameDescriptor, new AssignLocal(slot), new ReadLocal(slot));
69 CallTarget target = runtime.createCallTarget(rootNode); 71 CallTarget target = runtime.createCallTarget(rootNode);
70 Object result = target.call(); 72 Object result = target.call();
71 Assert.assertEquals(42, result); 73 Assert.assertEquals(42, result);
74 frameDescriptor.removeFrameSlot(varName);
75 boolean slotMissing = false;
76 try {
77 result = target.call();
78 } catch (IllegalArgumentException iae) {
79 slotMissing = true;
80 }
81 Assert.assertTrue(slotMissing);
72 } 82 }
73 83
74 class TestRootNode extends RootNode { 84 class TestRootNode extends RootNode {
75 85
76 @Child TestChildNode left; 86 @Child TestChildNode left;