1 /* 2 * Copyright (c) 1999, 2019, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifndef SHARE_CI_CIMETADATA_HPP 26 #define SHARE_CI_CIMETADATA_HPP 27 28 #include "ci/ciBaseObject.hpp" 29 #include "ci/ciClassList.hpp" 30 #include "runtime/handles.hpp" 31 #include "runtime/jniHandles.hpp" 32 33 // ciMetadata 34 // 35 // Compiler interface to metadata object in the VM, not Java object. 36 37 class ciMetadata: public ciBaseObject { 38 CI_PACKAGE_ACCESS 39 friend class ciEnv; 40 41 protected: 42 Metadata* _metadata; 43 44 ciMetadata(): _metadata(NULL) {} 45 ciMetadata(Metadata* o): _metadata(o) {} 46 47 virtual bool is_classless() const { return false; } 48 public: 49 bool is_loaded() const { return _metadata != NULL || is_classless(); } 50 51 virtual bool is_metadata() const { return true; } 52 53 virtual bool is_type() const { return false; } 54 virtual bool is_cpcache() const { return false; } 55 virtual bool is_return_address() const { return false; } 56 virtual bool is_method() const { return false; } 57 virtual bool is_method_data() const { return false; } 58 virtual bool is_klass() const { return false; } 59 virtual bool is_instance_klass() const { return false; } 60 virtual bool is_array_klass() const { return false; } 61 virtual bool is_obj_array_klass() const { return false; } 62 virtual bool is_type_array_klass() const { return false; } 63 virtual void dump_replay_data(outputStream* st) { /* do nothing */ } 64 65 ciMethod* as_method() { 66 assert(is_method(), "bad cast"); 67 return (ciMethod*)this; 68 } 69 ciMethodData* as_method_data() { 70 assert(is_method_data(), "bad cast"); 71 return (ciMethodData*)this; 72 } 73 ciSymbol* as_symbol() { 74 assert(is_symbol(), "bad cast"); 75 return (ciSymbol*)this; 76 } 77 ciType* as_type() { 78 assert(is_type(), "bad cast"); 79 return (ciType*)this; 80 } 81 ciReturnAddress* as_return_address() { 82 assert(is_return_address(), "bad cast"); 83 return (ciReturnAddress*)this; 84 } 85 ciKlass* as_klass() { 86 assert(is_klass(), "bad cast"); 87 return (ciKlass*)this; 88 } 89 ciInstanceKlass* as_instance_klass() { 90 assert(is_instance_klass(), "bad cast"); 91 return (ciInstanceKlass*)this; 92 } 93 ciArrayKlass* as_array_klass() { 94 assert(is_array_klass(), "bad cast"); 95 return (ciArrayKlass*)this; 96 } 97 ciObjArrayKlass* as_obj_array_klass() { 98 assert(is_obj_array_klass(), "bad cast"); 99 return (ciObjArrayKlass*)this; 100 } 101 ciTypeArrayKlass* as_type_array_klass() { 102 assert(is_type_array_klass(), "bad cast"); 103 return (ciTypeArrayKlass*)this; 104 } 105 106 Metadata* constant_encoding() { return _metadata; } 107 108 bool equals(ciMetadata* obj) const { return (this == obj); } 109 110 int hash() { return ident() * 31; } // ??? 111 112 void print(outputStream* st); 113 virtual void print_impl(outputStream* st) {} 114 virtual const char* type_string() { return "ciMetadata"; } 115 116 void print() { print(tty); } 117 void print_metadata(outputStream* st = tty); 118 119 }; 120 #endif // SHARE_CI_CIMETADATA_HPP