ciArrayKlass.cpp revision 3602:da91efe96a93
1/* 2 * Copyright (c) 1999, 2012, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25#include "precompiled.hpp" 26#include "ci/ciArrayKlass.hpp" 27#include "ci/ciObjArrayKlass.hpp" 28#include "ci/ciTypeArrayKlass.hpp" 29#include "ci/ciUtilities.hpp" 30 31// ciArrayKlass 32// 33// This class represents a Klass* in the HotSpot virtual machine 34// whose Klass part in an arrayKlass. 35 36// ------------------------------------------------------------------ 37// ciArrayKlass::ciArrayKlass 38// 39// Loaded array klass. 40ciArrayKlass::ciArrayKlass(KlassHandle h_k) : ciKlass(h_k) { 41 assert(get_Klass()->oop_is_array(), "wrong type"); 42 _dimension = get_arrayKlass()->dimension(); 43} 44 45// ------------------------------------------------------------------ 46// ciArrayKlass::ciArrayKlass 47// 48// Unloaded array klass. 49ciArrayKlass::ciArrayKlass(ciSymbol* name, int dimension, BasicType bt) 50 : ciKlass(name, bt) { 51 _dimension = dimension; 52} 53 54// ------------------------------------------------------------------ 55// ciArrayKlass::element_type 56// 57// What type is obtained when this array is indexed once? 58ciType* ciArrayKlass::element_type() { 59 if (is_type_array_klass()) { 60 return ciType::make(as_type_array_klass()->element_type()); 61 } else { 62 return as_obj_array_klass()->element_klass()->as_klass(); 63 } 64} 65 66 67// ------------------------------------------------------------------ 68// ciArrayKlass::base_element_type 69// 70// What type is obtained when this array is indexed as many times as possible? 71ciType* ciArrayKlass::base_element_type() { 72 if (is_type_array_klass()) { 73 return ciType::make(as_type_array_klass()->element_type()); 74 } else { 75 ciKlass* ek = as_obj_array_klass()->base_element_klass(); 76 if (ek->is_type_array_klass()) { 77 return ciType::make(ek->as_type_array_klass()->element_type()); 78 } 79 return ek; 80 } 81} 82 83 84// ------------------------------------------------------------------ 85// ciArrayKlass::is_leaf_type 86bool ciArrayKlass::is_leaf_type() { 87 if (is_type_array_klass()) { 88 return true; 89 } else { 90 return as_obj_array_klass()->base_element_klass()->is_leaf_type(); 91 } 92} 93 94 95// ------------------------------------------------------------------ 96// ciArrayKlass::base_element_type 97// 98// What type is obtained when this array is indexed as many times as possible? 99ciArrayKlass* ciArrayKlass::make(ciType* element_type) { 100 if (element_type->is_primitive_type()) { 101 return ciTypeArrayKlass::make(element_type->basic_type()); 102 } else { 103 return ciObjArrayKlass::make(element_type->as_klass()); 104 } 105} 106