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comparison graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/nodes/local/SLReadLocalVariableNode.java @ 13882:afd6fa5e8229

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SL: Feedback from reviewers
author Christian Wimmer <christian.wimmer@oracle.com>
date Wed, 05 Feb 2014 08:02:15 -0800
parents 64c77f0577bb
children 89ac75425681
comparison
equal deleted inserted replaced
13881:272a166a9574 13882:afd6fa5e8229
31 * allows to store primitive values of all Java primitive types, and Object values. This means that 31 * allows to store primitive values of all Java primitive types, and Object values. This means that
32 * all SL types that are objects are handled by the {@link #readObject} method. When a local 32 * all SL types that are objects are handled by the {@link #readObject} method. When a local
33 * variable changes its type, the frame access method throws an {@link FrameSlotTypeException}, 33 * variable changes its type, the frame access method throws an {@link FrameSlotTypeException},
34 * which causes not rewriting. The rewriting code is generated by the Truffle DSL. 34 * which causes not rewriting. The rewriting code is generated by the Truffle DSL.
35 */ 35 */
36 @PolymorphicLimit(1)
37 @NodeField(name = "slot", type = FrameSlot.class) 36 @NodeField(name = "slot", type = FrameSlot.class)
38 public abstract class SLReadLocalVariableNode extends SLExpressionNode { 37 public abstract class SLReadLocalVariableNode extends SLExpressionNode {
39 38
40 /** 39 /**
41 * Returns the descriptor of the accessed local variable. The implementation of this method is 40 * Returns the descriptor of the accessed local variable. The implementation of this method is
51 @Specialization(rewriteOn = {FrameSlotTypeException.class}) 50 @Specialization(rewriteOn = {FrameSlotTypeException.class})
52 protected boolean readBoolean(VirtualFrame frame) throws FrameSlotTypeException { 51 protected boolean readBoolean(VirtualFrame frame) throws FrameSlotTypeException {
53 return frame.getBoolean(getSlot()); 52 return frame.getBoolean(getSlot());
54 } 53 }
55 54
56 @Specialization(rewriteOn = {FrameSlotTypeException.class}) 55 @Specialization(order = 1, rewriteOn = {FrameSlotTypeException.class})
57 protected Object readObject(VirtualFrame frame) throws FrameSlotTypeException { 56 protected Object readObject(VirtualFrame frame) throws FrameSlotTypeException {
58 return frame.getObject(getSlot()); 57 return frame.getObject(getSlot());
59 } 58 }
60 59
61 @Generic 60 /**
62 protected Object readGeneric(VirtualFrame frame) { 61 * This is the generic case that always succeeds. Since we already have another specialization
62 * with the same signature above, we need to order them explicitly with the order attribute.
63 */
64 @Specialization(order = 2)
65 protected Object read(VirtualFrame frame) {
63 return frame.getValue(getSlot()); 66 return frame.getValue(getSlot());
64 } 67 }
65 } 68 }