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1 /*
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2 * Copyright 1999-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 #include "incls/_precompiled.incl"
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26 #include "incls/_ciSignature.cpp.incl"
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27
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28 // ciSignature
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29 //
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30 // This class represents the signature of a method.
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31
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32 // ------------------------------------------------------------------
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33 // ciSignature::ciSignature
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34 ciSignature::ciSignature(ciKlass* accessing_klass, ciSymbol* symbol) {
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35 ASSERT_IN_VM;
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36 EXCEPTION_CONTEXT;
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37 _accessing_klass = accessing_klass;
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38 _symbol = symbol;
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39
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40 ciEnv* env = CURRENT_ENV;
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41 Arena* arena = env->arena();
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42 _types = new (arena) GrowableArray<ciType*>(arena, 8, 0, NULL);
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43
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44 int size = 0;
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45 int count = 0;
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46 symbolHandle sh (THREAD, symbol->get_symbolOop());
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47 SignatureStream ss(sh);
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48 for (; ; ss.next()) {
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49 // Process one element of the signature
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50 ciType* type;
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51 if (!ss.is_object()) {
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52 type = ciType::make(ss.type());
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53 } else {
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54 symbolOop name = ss.as_symbol(THREAD);
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55 if (HAS_PENDING_EXCEPTION) {
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56 type = ss.is_array() ? (ciType*)ciEnv::unloaded_ciobjarrayklass()
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57 : (ciType*)ciEnv::unloaded_ciinstance_klass();
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58 env->record_out_of_memory_failure();
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59 CLEAR_PENDING_EXCEPTION;
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60 } else {
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61 ciSymbol* klass_name = env->get_object(name)->as_symbol();
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62 type = env->get_klass_by_name_impl(_accessing_klass, klass_name, false);
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63 }
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64 }
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65 _types->append(type);
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66 if (ss.at_return_type()) {
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67 // Done processing the return type; do not add it into the count.
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68 break;
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69 }
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70 size += type->size();
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71 count++;
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72 }
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73 _size = size;
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74 _count = count;
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75 }
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76
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77 // ------------------------------------------------------------------
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78 // ciSignature::return_ciType
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79 //
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80 // What is the return type of this signature?
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81 ciType* ciSignature::return_type() const {
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82 return _types->at(_count);
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83 }
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84
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85 // ------------------------------------------------------------------
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86 // ciSignature::ciType_at
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87 //
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88 // What is the type of the index'th element of this
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89 // signature?
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90 ciType* ciSignature::type_at(int index) const {
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91 assert(index < _count, "out of bounds");
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92 // The first _klasses element holds the return klass.
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93 return _types->at(index);
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94 }
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95
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96 // ------------------------------------------------------------------
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97 // ciSignature::print_signature
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98 void ciSignature::print_signature() {
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99 _symbol->print_symbol();
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100 }
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101
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102 // ------------------------------------------------------------------
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103 // ciSignature::print
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104 void ciSignature::print() {
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105 tty->print("<ciSignature symbol=");
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106 print_signature();
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107 tty->print(" accessing_klass=");
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108 _accessing_klass->print();
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109 tty->print(" address=0x%x>", (address)this);
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110 }
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