| /* |
| * Copyright 1997-2006 Sun Microsystems, Inc. All Rights Reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| * CA 95054 USA or visit www.sun.com if you need additional information or |
| * have any questions. |
| * |
| */ |
| |
| // Class Reflection contains utility methods needed for implementing the |
| // reflection api. |
| // |
| // Used by functions in the JVM interface. |
| // |
| // NOTE that in JDK 1.4 most of reflection is now implemented in Java |
| // using dynamic bytecode generation. The Array class has not yet been |
| // rewritten using bytecodes; if it were, most of the rest of this |
| // class could go away, as well as a few more entry points in jvm.cpp. |
| |
| class FieldStream; |
| |
| class Reflection: public AllStatic { |
| private: |
| // Access checking |
| static bool reflect_check_access(klassOop field_class, AccessFlags acc, klassOop target_class, bool is_method_invoke, TRAPS); |
| |
| // Conversion |
| static klassOop basic_type_mirror_to_arrayklass(oop basic_type_mirror, TRAPS); |
| static oop basic_type_arrayklass_to_mirror(klassOop basic_type_arrayklass, TRAPS); |
| |
| static objArrayHandle get_parameter_types(methodHandle method, int parameter_count, oop* return_type, TRAPS); |
| static objArrayHandle get_exception_types(methodHandle method, TRAPS); |
| // Creating new java.lang.reflect.xxx wrappers |
| static Handle new_type(symbolHandle signature, KlassHandle k, TRAPS); |
| |
| public: |
| // Constants defined by java reflection api classes |
| enum SomeConstants { |
| PUBLIC = 0, |
| DECLARED = 1, |
| MEMBER_PUBLIC = 0, |
| MEMBER_DECLARED = 1, |
| MAX_DIM = 255 |
| }; |
| |
| // Boxing. Returns boxed value of appropriate type. Throws IllegalArgumentException. |
| static oop box(jvalue* v, BasicType type, TRAPS); |
| // Unboxing. Returns type code and sets value. |
| static BasicType unbox_for_primitive(oop boxed_value, jvalue* value, TRAPS); |
| static BasicType unbox_for_regular_object(oop boxed_value, jvalue* value); |
| |
| // Widening of basic types. Throws IllegalArgumentException. |
| static void widen(jvalue* value, BasicType current_type, BasicType wide_type, TRAPS); |
| |
| // Reflective array access. Returns type code. Throws ArrayIndexOutOfBoundsException. |
| static BasicType array_get(jvalue* value, arrayOop a, int index, TRAPS); |
| static void array_set(jvalue* value, arrayOop a, int index, BasicType value_type, TRAPS); |
| // Returns mirror on array element type (NULL for basic type arrays and non-arrays). |
| static oop array_component_type(oop mirror, TRAPS); |
| |
| // Object creation |
| static arrayOop reflect_new_array(oop element_mirror, jint length, TRAPS); |
| static arrayOop reflect_new_multi_array(oop element_mirror, typeArrayOop dimensions, TRAPS); |
| |
| // Verification |
| static bool verify_class_access(klassOop current_class, klassOop new_class, bool classloader_only); |
| |
| static bool verify_field_access(klassOop current_class, |
| klassOop resolved_class, |
| klassOop field_class, |
| AccessFlags access, |
| bool classloader_only, |
| bool protected_restriction = false); |
| static bool is_same_class_package(klassOop class1, klassOop class2); |
| |
| static bool can_relax_access_check_for( |
| klassOop accessor, klassOop accesee, bool classloader_only); |
| |
| // inner class reflection |
| static void check_for_inner_class(instanceKlassHandle outer, instanceKlassHandle inner, TRAPS); |
| |
| // |
| // Support for reflection based on dynamic bytecode generation (JDK 1.4) |
| // |
| |
| // Create a java.lang.reflect.Method object based on a method |
| static oop new_method(methodHandle method, bool intern_name, bool for_constant_pool_access, TRAPS); |
| // Create a java.lang.reflect.Constructor object based on a method |
| static oop new_constructor(methodHandle method, TRAPS); |
| // Create a java.lang.reflect.Field object based on a field descriptor |
| static oop new_field(fieldDescriptor* fd, bool intern_name, TRAPS); |
| |
| //--------------------------------------------------------------------------- |
| // |
| // Support for old native code-based reflection (pre-JDK 1.4) |
| // |
| // NOTE: the method and constructor invocation code is still used |
| // for startup time reasons; see reflectionCompat.hpp. |
| // |
| //--------------------------------------------------------------------------- |
| |
| #ifdef SUPPORT_OLD_REFLECTION |
| private: |
| // method resolution for invoke |
| static methodHandle resolve_interface_call(instanceKlassHandle klass, methodHandle method, KlassHandle recv_klass, Handle receiver, TRAPS); |
| // Method call (shared by invoke_method and invoke_constructor) |
| static oop invoke(instanceKlassHandle klass, methodHandle method, Handle receiver, bool override, objArrayHandle ptypes, BasicType rtype, objArrayHandle args, bool is_method_invoke, TRAPS); |
| |
| // Narrowing of basic types. Used to create correct jvalues for |
| // boolean, byte, char and short return return values from interpreter |
| // which are returned as ints. Throws IllegalArgumentException. |
| static void narrow(jvalue* value, BasicType narrow_type, TRAPS); |
| |
| // Conversion |
| static BasicType basic_type_mirror_to_basic_type(oop basic_type_mirror, TRAPS); |
| |
| static bool match_parameter_types(methodHandle method, objArrayHandle types, int parameter_count, TRAPS); |
| // Creating new java.lang.reflect.xxx wrappers |
| static oop new_field(FieldStream* st, TRAPS); |
| |
| public: |
| // Field lookup and verification. |
| static bool resolve_field(Handle field_mirror, Handle& receiver, fieldDescriptor* fd, bool check_final, TRAPS); |
| |
| // Reflective field access. Returns type code. Throws IllegalArgumentException. |
| static BasicType field_get(jvalue* value, fieldDescriptor* fd, Handle receiver); |
| static void field_set(jvalue* value, fieldDescriptor* fd, Handle receiver, BasicType value_type, TRAPS); |
| |
| // Reflective lookup of fields. Returns java.lang.reflect.Field instances. |
| static oop reflect_field(oop mirror, symbolOop field_name, jint which, TRAPS); |
| static objArrayOop reflect_fields(oop mirror, jint which, TRAPS); |
| |
| // Reflective lookup of methods. Returns java.lang.reflect.Method instances. |
| static oop reflect_method(oop mirror, symbolHandle method_name, objArrayHandle types, jint which, TRAPS); |
| static objArrayOop reflect_methods(oop mirror, jint which, TRAPS); |
| |
| // Reflective lookup of constructors. Returns java.lang.reflect.Constructor instances. |
| static oop reflect_constructor(oop mirror, objArrayHandle types, jint which, TRAPS); |
| static objArrayOop reflect_constructors(oop mirror, jint which, TRAPS); |
| |
| // Method invokation through java.lang.reflect.Method |
| static oop invoke_method(oop method_mirror, Handle receiver, objArrayHandle args, TRAPS); |
| // Method invokation through java.lang.reflect.Constructor |
| static oop invoke_constructor(oop method_mirror, objArrayHandle args, TRAPS); |
| #endif /* SUPPORT_OLD_REFLECTION */ |
| |
| }; |
