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/*
* Copyright (c) 1997, 2012, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
#include "precompiled.hpp"
#include "classfile/systemDictionary.hpp"
#include "classfile/vmSymbols.hpp"
#include "memory/resourceArea.hpp"
#include "memory/universe.inline.hpp"
#include "oops/annotations.hpp"
#include "oops/instanceKlass.hpp"
#include "oops/fieldStreams.hpp"
#include "runtime/fieldDescriptor.hpp"
#include "runtime/handles.inline.hpp"
#include "runtime/signature.hpp"
oop fieldDescriptor::loader() const {
return _cp->pool_holder()->class_loader();
}
Symbol* fieldDescriptor::generic_signature() const {
if (!has_generic_signature()) {
return NULL;
}
int idx = 0;
InstanceKlass* ik = field_holder();
for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
if (idx == _index) {
return fs.generic_signature();
} else {
idx ++;
}
}
assert(false, "should never happen");
return NULL;
}
AnnotationArray* fieldDescriptor::annotations() const {
InstanceKlass* ik = field_holder();
Array<AnnotationArray*>* md = ik->fields_annotations();
if (md == NULL)
return NULL;
return md->at(index());
}
AnnotationArray* fieldDescriptor::type_annotations() const {
InstanceKlass* ik = field_holder();
Annotations* type_annos = ik->type_annotations();
if (type_annos == NULL)
return NULL;
Array<AnnotationArray*>* md = type_annos->fields_annotations();
if (md == NULL)
return NULL;
return md->at(index());
}
constantTag fieldDescriptor::initial_value_tag() const {
return constants()->tag_at(initial_value_index());
}
jint fieldDescriptor::int_initial_value() const {
return constants()->int_at(initial_value_index());
}
jlong fieldDescriptor::long_initial_value() const {
return constants()->long_at(initial_value_index());
}
jfloat fieldDescriptor::float_initial_value() const {
return constants()->float_at(initial_value_index());
}
jdouble fieldDescriptor::double_initial_value() const {
return constants()->double_at(initial_value_index());
}
oop fieldDescriptor::string_initial_value(TRAPS) const {
return constants()->uncached_string_at(initial_value_index(), CHECK_0);
}
void fieldDescriptor::initialize(InstanceKlass* ik, int index) {
_cp = ik->constants();
FieldInfo* f = ik->field(index);
assert(!f->is_internal(), "regular Java fields only");
_access_flags = accessFlags_from(f->access_flags());
guarantee(f->name_index() != 0 && f->signature_index() != 0, "bad constant pool index for fieldDescriptor");
_index = index;
}
#ifndef PRODUCT
void fieldDescriptor::print_on(outputStream* st) const {
access_flags().print_on(st);
name()->print_value_on(st);
st->print(" ");
signature()->print_value_on(st);
st->print(" @%d ", offset());
if (WizardMode && has_initial_value()) {
st->print("(initval ");
constantTag t = initial_value_tag();
if (t.is_int()) {
st->print("int %d)", int_initial_value());
} else if (t.is_long()){
st->print_jlong(long_initial_value());
} else if (t.is_float()){
st->print("float %f)", float_initial_value());
} else if (t.is_double()){
st->print("double %lf)", double_initial_value());
}
}
}
void fieldDescriptor::print_on_for(outputStream* st, oop obj) {
print_on(st);
BasicType ft = field_type();
jint as_int = 0;
switch (ft) {
case T_BYTE:
as_int = (jint)obj->byte_field(offset());
st->print(" %d", obj->byte_field(offset()));
break;
case T_CHAR:
as_int = (jint)obj->char_field(offset());
{
jchar c = obj->char_field(offset());
as_int = c;
st->print(" %c %d", isprint(c) ? c : ' ', c);
}
break;
case T_DOUBLE:
st->print(" %lf", obj->double_field(offset()));
break;
case T_FLOAT:
as_int = obj->int_field(offset());
st->print(" %f", obj->float_field(offset()));
break;
case T_INT:
as_int = obj->int_field(offset());
st->print(" %d", obj->int_field(offset()));
break;
case T_LONG:
st->print(" ");
st->print_jlong(obj->long_field(offset()));
break;
case T_SHORT:
as_int = obj->short_field(offset());
st->print(" %d", obj->short_field(offset()));
break;
case T_BOOLEAN:
as_int = obj->bool_field(offset());
st->print(" %s", obj->bool_field(offset()) ? "true" : "false");
break;
case T_ARRAY:
st->print(" ");
NOT_LP64(as_int = obj->int_field(offset()));
obj->obj_field(offset())->print_value_on(st);
break;
case T_OBJECT:
st->print(" ");
NOT_LP64(as_int = obj->int_field(offset()));
obj->obj_field(offset())->print_value_on(st);
break;
default:
ShouldNotReachHere();
break;
}
// Print a hint as to the underlying integer representation. This can be wrong for
// pointers on an LP64 machine
if (ft == T_LONG || ft == T_DOUBLE LP64_ONLY(|| !is_java_primitive(ft)) ) {
st->print(" (%x %x)", obj->int_field(offset()), obj->int_field(offset()+sizeof(jint)));
} else if (as_int < 0 || as_int > 9) {
st->print(" (%x)", as_int);
}
}
#endif /* PRODUCT */
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