Mercurial > hg > truffle
annotate graal/com.oracle.graal.api.meta/src/com/oracle/graal/api/meta/ConstantPool.java @ 7530:5e3d1a68664e
applied mx eclipseformat to all Java files
author | Doug Simon <doug.simon@oracle.com> |
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date | Wed, 23 Jan 2013 16:34:57 +0100 |
parents | b89b5038ad7e |
children | 7ef66078d837 |
rev | line source |
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1 /* |
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2 * Copyright (c) 2009, 2012, 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.graal.api.meta; |
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24 |
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25 /** |
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26 * Represents the runtime representation of the constant pool that is used by the compiler when |
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27 * parsing bytecode. Provides methods to look up a constant pool entry without performing |
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28 * resolution. They are used during compilation. |
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29 */ |
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30 public interface ConstantPool { |
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31 |
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32 /** |
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33 * Ensures that the type referenced by the specified constant pool entry is loaded and |
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34 * initialized. This can be used to compile time resolve a type. It works for field, method, or |
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35 * type constant pool entries. |
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36 * |
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37 * @param cpi the index of the constant pool entry that references the type |
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38 * @param opcode the opcode of the instruction that references the type |
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39 */ |
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40 void loadReferencedType(int cpi, int opcode); |
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41 |
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42 /** |
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43 * Looks up a reference to a field. If {@code opcode} is non-negative, then resolution checks |
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44 * specific to the bytecode it denotes are performed if the field is already resolved. Should |
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45 * any of these checks fail, an unresolved field reference is returned. |
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46 * |
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47 * @param cpi the constant pool index |
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48 * @param opcode the opcode of the instruction for which the lookup is being performed or |
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49 * {@code -1} |
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50 * @return a reference to the field at {@code cpi} in this pool |
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51 * @throws ClassFormatError if the entry at {@code cpi} is not a field |
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52 */ |
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53 JavaField lookupField(int cpi, int opcode); |
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54 |
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55 /** |
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56 * Looks up a reference to a method. If {@code opcode} is non-negative, then resolution checks |
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57 * specific to the bytecode it denotes are performed if the method is already resolved. Should |
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58 * any of these checks fail, an unresolved method reference is returned. |
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59 * |
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60 * @param cpi the constant pool index |
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61 * @param opcode the opcode of the instruction for which the lookup is being performed or |
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62 * {@code -1} |
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63 * @return a reference to the method at {@code cpi} in this pool |
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64 * @throws ClassFormatError if the entry at {@code cpi} is not a method |
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65 */ |
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66 JavaMethod lookupMethod(int cpi, int opcode); |
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67 |
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68 /** |
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69 * Looks up a reference to a type. If {@code opcode} is non-negative, then resolution checks |
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70 * specific to the bytecode it denotes are performed if the type is already resolved. Should any |
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71 * of these checks fail, an unresolved type reference is returned. |
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72 * |
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73 * @param cpi the constant pool index |
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74 * @param opcode the opcode of the instruction for which the lookup is being performed or |
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75 * {@code -1} |
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76 * @return a reference to the compiler interface type |
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77 */ |
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78 JavaType lookupType(int cpi, int opcode); |
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79 |
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80 /** |
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81 * Looks up a method signature. |
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82 * |
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83 * @param cpi the constant pool index |
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84 * @return the method signature at index {@code cpi} in this constant pool |
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85 */ |
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86 Signature lookupSignature(int cpi); |
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87 |
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88 /** |
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89 * Looks up a constant at the specified index. |
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90 * |
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91 * @param cpi the constant pool index |
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92 * @return the {@code Constant} or {@code JavaType} instance representing the constant pool |
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93 * entry |
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94 */ |
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95 Object lookupConstant(int cpi); |
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96 } |