duke@435: /*
coleenp@4572:  * Copyright (c) 1997, 2013, Oracle and/or its affiliates. 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:  *
trims@1907:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907:  * or visit www.oracle.com if you need additional information or have any
trims@1907:  * questions.
duke@435:  *
duke@435:  */
duke@435: 
stefank@2314: #include "precompiled.hpp"
stefank@2314: #include "classfile/systemDictionary.hpp"
stefank@2314: #include "classfile/vmSymbols.hpp"
stefank@2314: #include "memory/resourceArea.hpp"
stefank@2314: #include "memory/universe.inline.hpp"
coleenp@4037: #include "oops/annotations.hpp"
stefank@2314: #include "oops/instanceKlass.hpp"
jiangli@3803: #include "oops/fieldStreams.hpp"
stefank@2314: #include "runtime/fieldDescriptor.hpp"
stefank@2314: #include "runtime/handles.inline.hpp"
stefank@2314: #include "runtime/signature.hpp"
duke@435: 
duke@435: 
duke@435: oop fieldDescriptor::loader() const {
coleenp@4251:   return _cp->pool_holder()->class_loader();
duke@435: }
duke@435: 
jiangli@3803: Symbol* fieldDescriptor::generic_signature() const {
jiangli@3879:   if (!has_generic_signature()) {
jiangli@3879:     return NULL;
jiangli@3879:   }
jiangli@3879: 
jiangli@3803:   int idx = 0;
coleenp@4251:   InstanceKlass* ik = field_holder();
jiangli@3803:   for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
jiangli@3803:     if (idx == _index) {
jiangli@3803:       return fs.generic_signature();
jiangli@3803:     } else {
jiangli@3803:       idx ++;
jiangli@3803:     }
jiangli@3803:   }
jiangli@3803:   assert(false, "should never happen");
jiangli@3803:   return NULL;
jiangli@3803: }
jiangli@3803: 
coleenp@4037: AnnotationArray* fieldDescriptor::annotations() const {
coleenp@4251:   InstanceKlass* ik = field_holder();
coleenp@4037:   Array<AnnotationArray*>* md = ik->fields_annotations();
duke@435:   if (md == NULL)
duke@435:     return NULL;
coleenp@4037:   return md->at(index());
duke@435: }
duke@435: 
stefank@4393: AnnotationArray* fieldDescriptor::type_annotations() const {
stefank@4393:   InstanceKlass* ik = field_holder();
coleenp@4572:   Array<AnnotationArray*>* type_annos = ik->fields_type_annotations();
stefank@4393:   if (type_annos == NULL)
stefank@4393:     return NULL;
coleenp@4572:   return type_annos->at(index());
stefank@4393: }
stefank@4393: 
duke@435: constantTag fieldDescriptor::initial_value_tag() const {
never@3137:   return constants()->tag_at(initial_value_index());
duke@435: }
duke@435: 
duke@435: jint fieldDescriptor::int_initial_value() const {
never@3137:   return constants()->int_at(initial_value_index());
duke@435: }
duke@435: 
duke@435: jlong fieldDescriptor::long_initial_value() const {
never@3137:   return constants()->long_at(initial_value_index());
duke@435: }
duke@435: 
duke@435: jfloat fieldDescriptor::float_initial_value() const {
never@3137:   return constants()->float_at(initial_value_index());
duke@435: }
duke@435: 
duke@435: jdouble fieldDescriptor::double_initial_value() const {
never@3137:   return constants()->double_at(initial_value_index());
duke@435: }
duke@435: 
duke@435: oop fieldDescriptor::string_initial_value(TRAPS) const {
coleenp@4037:   return constants()->uncached_string_at(initial_value_index(), CHECK_0);
duke@435: }
duke@435: 
coleenp@4037: void fieldDescriptor::initialize(InstanceKlass* ik, int index) {
duke@435:   _cp = ik->constants();
never@3137:   FieldInfo* f = ik->field(index);
never@3137:   assert(!f->is_internal(), "regular Java fields only");
duke@435: 
never@3137:   _access_flags = accessFlags_from(f->access_flags());
never@3137:   guarantee(f->name_index() != 0 && f->signature_index() != 0, "bad constant pool index for fieldDescriptor");
duke@435:   _index = index;
duke@435: }
duke@435: 
duke@435: #ifndef PRODUCT
duke@435: 
duke@435: void fieldDescriptor::print_on(outputStream* st) const {
never@3137:   access_flags().print_on(st);
never@3137:   name()->print_value_on(st);
duke@435:   st->print(" ");
never@3137:   signature()->print_value_on(st);
duke@435:   st->print(" @%d ", offset());
duke@435:   if (WizardMode && has_initial_value()) {
duke@435:     st->print("(initval ");
duke@435:     constantTag t = initial_value_tag();
duke@435:     if (t.is_int()) {
duke@435:       st->print("int %d)", int_initial_value());
duke@435:     } else if (t.is_long()){
duke@435:       st->print_jlong(long_initial_value());
duke@435:     } else if (t.is_float()){
duke@435:       st->print("float %f)", float_initial_value());
duke@435:     } else if (t.is_double()){
duke@435:       st->print("double %lf)", double_initial_value());
duke@435:     }
duke@435:   }
duke@435: }
duke@435: 
duke@435: void fieldDescriptor::print_on_for(outputStream* st, oop obj) {
duke@435:   print_on(st);
duke@435:   BasicType ft = field_type();
jrose@1100:   jint as_int = 0;
duke@435:   switch (ft) {
duke@435:     case T_BYTE:
duke@435:       as_int = (jint)obj->byte_field(offset());
duke@435:       st->print(" %d", obj->byte_field(offset()));
duke@435:       break;
duke@435:     case T_CHAR:
jrose@1100:       as_int = (jint)obj->char_field(offset());
duke@435:       {
duke@435:         jchar c = obj->char_field(offset());
duke@435:         as_int = c;
duke@435:         st->print(" %c %d", isprint(c) ? c : ' ', c);
duke@435:       }
duke@435:       break;
duke@435:     case T_DOUBLE:
duke@435:       st->print(" %lf", obj->double_field(offset()));
duke@435:       break;
duke@435:     case T_FLOAT:
duke@435:       as_int = obj->int_field(offset());
duke@435:       st->print(" %f", obj->float_field(offset()));
duke@435:       break;
duke@435:     case T_INT:
jrose@1100:       as_int = obj->int_field(offset());
duke@435:       st->print(" %d", obj->int_field(offset()));
duke@435:       break;
duke@435:     case T_LONG:
duke@435:       st->print(" ");
duke@435:       st->print_jlong(obj->long_field(offset()));
duke@435:       break;
duke@435:     case T_SHORT:
duke@435:       as_int = obj->short_field(offset());
duke@435:       st->print(" %d", obj->short_field(offset()));
duke@435:       break;
duke@435:     case T_BOOLEAN:
duke@435:       as_int = obj->bool_field(offset());
duke@435:       st->print(" %s", obj->bool_field(offset()) ? "true" : "false");
duke@435:       break;
duke@435:     case T_ARRAY:
duke@435:       st->print(" ");
jrose@1100:       NOT_LP64(as_int = obj->int_field(offset()));
duke@435:       obj->obj_field(offset())->print_value_on(st);
duke@435:       break;
duke@435:     case T_OBJECT:
duke@435:       st->print(" ");
jrose@1100:       NOT_LP64(as_int = obj->int_field(offset()));
duke@435:       obj->obj_field(offset())->print_value_on(st);
duke@435:       break;
duke@435:     default:
duke@435:       ShouldNotReachHere();
duke@435:       break;
duke@435:   }
duke@435:   // Print a hint as to the underlying integer representation. This can be wrong for
duke@435:   // pointers on an LP64 machine
jrose@1100:   if (ft == T_LONG || ft == T_DOUBLE LP64_ONLY(|| !is_java_primitive(ft)) ) {
duke@435:     st->print(" (%x %x)", obj->int_field(offset()), obj->int_field(offset()+sizeof(jint)));
jrose@1100:   } else if (as_int < 0 || as_int > 9) {
duke@435:     st->print(" (%x)", as_int);
duke@435:   }
duke@435: }
duke@435: 
duke@435: #endif /* PRODUCT */