jdk

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/*
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 * Copyright (c) 1999, 2023, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 *
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 */
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#include "precompiled.hpp"
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#include "ci/ciArrayKlass.hpp"
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#include "ci/ciObjArrayKlass.hpp"
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#include "ci/ciTypeArrayKlass.hpp"
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#include "ci/ciUtilities.inline.hpp"
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#include "memory/universe.hpp"
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// ciArrayKlass
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//
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// This class represents a Klass* in the HotSpot virtual machine
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// whose Klass part in an ArrayKlass.
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// ------------------------------------------------------------------
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// ciArrayKlass::ciArrayKlass
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//
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// Loaded array klass.
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ciArrayKlass::ciArrayKlass(Klass* k) : ciKlass(k) {
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  assert(get_Klass()->is_array_klass(), "wrong type");
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  _dimension = get_ArrayKlass()->dimension();
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}
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// ------------------------------------------------------------------
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// ciArrayKlass::ciArrayKlass
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//
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// Unloaded array klass.
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ciArrayKlass::ciArrayKlass(ciSymbol* name, int dimension, BasicType bt)
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  : ciKlass(name, bt) {
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  _dimension = dimension;
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}
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// ------------------------------------------------------------------
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// ciArrayKlass::element_type
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//
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// What type is obtained when this array is indexed once?
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ciType* ciArrayKlass::element_type() {
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  if (is_type_array_klass()) {
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    return ciType::make(as_type_array_klass()->element_type());
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  } else {
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    return as_obj_array_klass()->element_klass()->as_klass();
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  }
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}
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// ------------------------------------------------------------------
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// ciArrayKlass::base_element_type
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//
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// What type is obtained when this array is indexed as many times as possible?
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ciType* ciArrayKlass::base_element_type() {
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  if (is_type_array_klass()) {
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    return ciType::make(as_type_array_klass()->element_type());
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  } else {
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    ciKlass* ek = as_obj_array_klass()->base_element_klass();
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    if (ek->is_type_array_klass()) {
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      return ciType::make(ek->as_type_array_klass()->element_type());
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    }
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    return ek;
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  }
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}
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// ------------------------------------------------------------------
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// ciArrayKlass::is_leaf_type
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bool ciArrayKlass::is_leaf_type() {
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  if (is_type_array_klass()) {
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    return true;
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  } else {
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    return as_obj_array_klass()->base_element_klass()->is_leaf_type();
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  }
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}
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// ------------------------------------------------------------------
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// ciArrayKlass::make
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//
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// Make an array klass of the specified element type.
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ciArrayKlass* ciArrayKlass::make(ciType* element_type) {
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  if (element_type->is_primitive_type()) {
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    return ciTypeArrayKlass::make(element_type->basic_type());
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  } else {
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    return ciObjArrayKlass::make(element_type->as_klass());
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  }
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}
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