duke@435: /*
duke@435:  * Copyright 1997-2005 Sun Microsystems, Inc.  All Rights Reserved.
duke@435:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435:  *
duke@435:  * This code is free software; you can redistribute it and/or modify it
duke@435:  * under the terms of the GNU General Public License version 2 only, as
duke@435:  * published by the Free Software Foundation.
duke@435:  *
duke@435:  * This code is distributed in the hope that it will be useful, but WITHOUT
duke@435:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@435:  * version 2 for more details (a copy is included in the LICENSE file that
duke@435:  * accompanied this code).
duke@435:  *
duke@435:  * You should have received a copy of the GNU General Public License version
duke@435:  * 2 along with this work; if not, write to the Free Software Foundation,
duke@435:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435:  *
duke@435:  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@435:  * CA 95054 USA or visit www.sun.com if you need additional information or
duke@435:  * have any questions.
duke@435:  *
duke@435:  */
duke@435: 
duke@435: // A fieldDescriptor describes the attributes of a single field (instance or class variable).
duke@435: // It needs the class constant pool to work (because it only holds indices into the pool
duke@435: // rather than the actual info).
duke@435: 
duke@435: class fieldDescriptor VALUE_OBJ_CLASS_SPEC {
duke@435:  private:
duke@435:   AccessFlags         _access_flags;
duke@435:   int                 _name_index;
duke@435:   int                 _signature_index;
duke@435:   int                 _initial_value_index;
duke@435:   int                 _offset;
duke@435:   int                 _generic_signature_index;
duke@435:   int                 _index; // index into fields() array
duke@435:   constantPoolHandle  _cp;
duke@435: 
duke@435:  public:
duke@435:   symbolOop name() const               { return _cp->symbol_at(_name_index); }
duke@435:   symbolOop signature() const          { return _cp->symbol_at(_signature_index); }
duke@435:   klassOop field_holder() const        { return _cp->pool_holder(); }
duke@435:   constantPoolOop constants() const    { return _cp(); }
duke@435:   AccessFlags access_flags() const     { return _access_flags; }
duke@435:   oop loader() const;
duke@435:   // Offset (in words) of field from start of instanceOop / klassOop
duke@435:   int offset() const                   { return _offset; }
duke@435:   symbolOop generic_signature() const  { return (_generic_signature_index > 0 ? _cp->symbol_at(_generic_signature_index) : (symbolOop)NULL); }
duke@435:   int index() const                    { return _index; }
duke@435:   typeArrayOop annotations() const;
duke@435: 
duke@435:   // Initial field value
duke@435:   bool has_initial_value() const          { return _initial_value_index != 0; }
duke@435:   constantTag initial_value_tag() const;  // The tag will return true on one of is_int(), is_long(), is_single(), is_double()
duke@435:   jint        int_initial_value() const;
duke@435:   jlong       long_initial_value() const;
duke@435:   jfloat      float_initial_value() const;
duke@435:   jdouble     double_initial_value() const;
duke@435:   oop         string_initial_value(TRAPS) const;
duke@435: 
duke@435:   // Field signature type
duke@435:   BasicType field_type() const            { return FieldType::basic_type(signature()); }
duke@435: 
duke@435:   // Access flags
duke@435:   bool is_public() const                  { return _access_flags.is_public(); }
duke@435:   bool is_private() const                 { return _access_flags.is_private(); }
duke@435:   bool is_protected() const               { return _access_flags.is_protected(); }
duke@435:   bool is_package_private() const         { return !is_public() && !is_private() && !is_protected(); }
duke@435: 
duke@435:   bool is_static() const                  { return _access_flags.is_static(); }
duke@435:   bool is_final() const                   { return _access_flags.is_final(); }
duke@435:   bool is_volatile() const                { return _access_flags.is_volatile(); }
duke@435:   bool is_transient() const               { return _access_flags.is_transient(); }
duke@435: 
duke@435:   bool is_synthetic() const               { return _access_flags.is_synthetic(); }
duke@435: 
duke@435:   bool is_field_access_watched() const    { return _access_flags.is_field_access_watched(); }
duke@435:   bool is_field_modification_watched() const
duke@435:                                           { return _access_flags.is_field_modification_watched(); }
duke@435:   void set_is_field_access_watched(const bool value)
duke@435:                                           { _access_flags.set_is_field_access_watched(value); }
duke@435:   void set_is_field_modification_watched(const bool value)
duke@435:                                           { _access_flags.set_is_field_modification_watched(value); }
duke@435: 
duke@435:   // Initialization
duke@435:   void initialize(klassOop k, int index);
duke@435: 
duke@435:   // Print
duke@435:   void print_on(outputStream* st) const         PRODUCT_RETURN;
duke@435:   void print_on_for(outputStream* st, oop obj)  PRODUCT_RETURN;
duke@435: };