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annotate graal/com.oracle.max.cri/src/com/oracle/max/cri/ri/RiSignature.java @ 4484:14a00ee82980

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Implement eager type resolving.
author Andreas Woess <andreas.woess@jku.at>
date Tue, 07 Feb 2012 21:15:58 +0100
parents aaac4894175c
children 438ab53efdd0
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1 /*
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2 * Copyright (c) 2009, 2011, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package com.oracle.max.cri.ri;
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24
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25 import com.oracle.max.cri.ci.*;
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26
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27 /**
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28 * Represents a method signature provided by the runtime.
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29 *
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30 * @see <a href="http://java.sun.com/docs/books/jvms/second_edition/html/ClassFile.doc.html#7035">Method Descriptors</a>
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31 */
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32 public interface RiSignature {
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33 /**
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34 * Gets the number of arguments in this signature, adding 1 for a receiver if requested.
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35 *
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36 * @param receiver true if 1 is to be added to the result for a receiver
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37 * @return the number of arguments + 1 iff {@code receiver == true}
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38 */
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39 int argumentCount(boolean receiver);
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40
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41 /**
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42 * Gets the argument type at the specified position. This method will return a
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43 * {@linkplain RiType#isResolved() resolved} type if possible but without
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44 * triggering any class loading or resolution.
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45 *
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46 * @param index the index into the parameters, with {@code 0} indicating the first parameter
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47 * @param accessingClass the context of the type lookup. If accessing class is resolved, its class loader
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48 * is used to retrieve an existing resolved type. This value can be {@code null} if the caller does
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49 * not care for a resolved type.
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50 * @return the {@code index}'th argument type
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51 */
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52 RiType argumentTypeAt(int index, RiResolvedType accessingClass);
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53
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54 /**
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55 * Gets the argument kind at the specified position.
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56 * @param index the index into the parameters, with {@code 0} indicating the first parameter
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57 * @param architecture When true, the architecture-specific kind used for emitting machine code is returned.
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58 * When false, the kind according to the Java specification is returned.
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59 * @return the kind of the argument at the specified position
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60 */
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61 CiKind argumentKindAt(int index, boolean architecture);
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62
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63 /**
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64 * Gets the return type of this signature. This method will return a
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65 * {@linkplain RiResolvedType resolved} type if possible but without
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66 * triggering any class loading or resolution.
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67 *
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68 * @param accessingClass the context of the type lookup. If accessing class is resolved, its class loader
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69 * is used to retrieve an existing resolved type. This value can be {@code null} if the caller does
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70 * not care for a resolved type.
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71 * @return the compiler interface type representing the return type
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72 */
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73 RiType returnType(RiType accessingClass);
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74
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75 /**
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76 * Gets the return kind of this signature.
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77 * @param architectureSpecific When true, the architecture-specific kind used for emitting machine code is returned.
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78 * When false, the kind according to the Java specification is returned.
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79 * @return the return kind
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80 */
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81 CiKind returnKind(boolean architectureSpecific);
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82
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83 /**
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84 * Converts this signature to a string.
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85 * @return the signature as a string
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86 */
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87 String asString();
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88
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89 /**
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90 * Gets the size, in Java slots, of the arguments to this signature.
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91 * @param withReceiver {@code true} if to add a slot for a receiver object; {@code false} not to include the receiver
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92 * @return the size of the arguments in slots
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93 */
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94 int argumentSlots(boolean withReceiver);
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95 }