1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/ci/ciArrayKlass.cpp Wed Apr 27 01:25:04 2016 +0800
1.3 @@ -0,0 +1,105 @@
1.4 +/*
1.5 + * Copyright (c) 1999, 2012, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + *
1.26 + */
1.27 +
1.28 +#include "precompiled.hpp"
1.29 +#include "ci/ciArrayKlass.hpp"
1.30 +#include "ci/ciObjArrayKlass.hpp"
1.31 +#include "ci/ciTypeArrayKlass.hpp"
1.32 +#include "ci/ciUtilities.hpp"
1.33 +
1.34 +// ciArrayKlass
1.35 +//
1.36 +// This class represents a Klass* in the HotSpot virtual machine
1.37 +// whose Klass part in an ArrayKlass.
1.38 +
1.39 +// ------------------------------------------------------------------
1.40 +// ciArrayKlass::ciArrayKlass
1.41 +//
1.42 +// Loaded array klass.
1.43 +ciArrayKlass::ciArrayKlass(KlassHandle h_k) : ciKlass(h_k) {
1.44 + assert(get_Klass()->oop_is_array(), "wrong type");
1.45 + _dimension = get_ArrayKlass()->dimension();
1.46 +}
1.47 +
1.48 +// ------------------------------------------------------------------
1.49 +// ciArrayKlass::ciArrayKlass
1.50 +//
1.51 +// Unloaded array klass.
1.52 +ciArrayKlass::ciArrayKlass(ciSymbol* name, int dimension, BasicType bt)
1.53 + : ciKlass(name, bt) {
1.54 + _dimension = dimension;
1.55 +}
1.56 +
1.57 +// ------------------------------------------------------------------
1.58 +// ciArrayKlass::element_type
1.59 +//
1.60 +// What type is obtained when this array is indexed once?
1.61 +ciType* ciArrayKlass::element_type() {
1.62 + if (is_type_array_klass()) {
1.63 + return ciType::make(as_type_array_klass()->element_type());
1.64 + } else {
1.65 + return as_obj_array_klass()->element_klass()->as_klass();
1.66 + }
1.67 +}
1.68 +
1.69 +
1.70 +// ------------------------------------------------------------------
1.71 +// ciArrayKlass::base_element_type
1.72 +//
1.73 +// What type is obtained when this array is indexed as many times as possible?
1.74 +ciType* ciArrayKlass::base_element_type() {
1.75 + if (is_type_array_klass()) {
1.76 + return ciType::make(as_type_array_klass()->element_type());
1.77 + } else {
1.78 + ciKlass* ek = as_obj_array_klass()->base_element_klass();
1.79 + if (ek->is_type_array_klass()) {
1.80 + return ciType::make(ek->as_type_array_klass()->element_type());
1.81 + }
1.82 + return ek;
1.83 + }
1.84 +}
1.85 +
1.86 +
1.87 +// ------------------------------------------------------------------
1.88 +// ciArrayKlass::is_leaf_type
1.89 +bool ciArrayKlass::is_leaf_type() {
1.90 + if (is_type_array_klass()) {
1.91 + return true;
1.92 + } else {
1.93 + return as_obj_array_klass()->base_element_klass()->is_leaf_type();
1.94 + }
1.95 +}
1.96 +
1.97 +
1.98 +// ------------------------------------------------------------------
1.99 +// ciArrayKlass::base_element_type
1.100 +//
1.101 +// What type is obtained when this array is indexed as many times as possible?
1.102 +ciArrayKlass* ciArrayKlass::make(ciType* element_type) {
1.103 + if (element_type->is_primitive_type()) {
1.104 + return ciTypeArrayKlass::make(element_type->basic_type());
1.105 + } else {
1.106 + return ciObjArrayKlass::make(element_type->as_klass());
1.107 + }
1.108 +}
