1 /*
   2  * Copyright (c) 1999, 2005, 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 "incls/_precompiled.incl"
  26 #include "incls/_ciArrayKlass.cpp.incl"
  27 
  28 // ciArrayKlass
  29 //
  30 // This class represents a klassOop in the HotSpot virtual machine
  31 // whose Klass part in an arrayKlass.
  32 
  33 // ------------------------------------------------------------------
  34 // ciArrayKlass::ciArrayKlass
  35 //
  36 // Loaded array klass.
  37 ciArrayKlass::ciArrayKlass(KlassHandle h_k) : ciKlass(h_k) {
  38   assert(get_Klass()->oop_is_array(), "wrong type");
  39   _dimension = get_arrayKlass()->dimension();
  40 }
  41 
  42 // ------------------------------------------------------------------
  43 // ciArrayKlass::ciArrayKlass
  44 //
  45 // Unloaded array klass.
  46 ciArrayKlass::ciArrayKlass(ciSymbol* name, int dimension, ciKlass* klass)
  47   : ciKlass(name, klass) {
  48   _dimension = dimension;
  49 }
  50 
  51 // ------------------------------------------------------------------
  52 // ciArrayKlass::element_type
  53 //
  54 // What type is obtained when this array is indexed once?
  55 ciType* ciArrayKlass::element_type() {
  56   if (is_type_array_klass()) {
  57     return ciType::make(as_type_array_klass()->element_type());
  58   } else {
  59     return as_obj_array_klass()->element_klass()->as_klass();
  60   }
  61 }
  62 
  63 
  64 // ------------------------------------------------------------------
  65 // ciArrayKlass::base_element_type
  66 //
  67 // What type is obtained when this array is indexed as many times as possible?
  68 ciType* ciArrayKlass::base_element_type() {
  69   if (is_type_array_klass()) {
  70     return ciType::make(as_type_array_klass()->element_type());
  71   } else {
  72     ciKlass* ek = as_obj_array_klass()->base_element_klass();
  73     if (ek->is_type_array_klass()) {
  74       return ciType::make(ek->as_type_array_klass()->element_type());
  75     }
  76     return ek;
  77   }
  78 }
  79 
  80 
  81 // ------------------------------------------------------------------
  82 // ciArrayKlass::is_leaf_type
  83 bool ciArrayKlass::is_leaf_type() {
  84   if (is_type_array_klass()) {
  85     return true;
  86   } else {
  87     return as_obj_array_klass()->base_element_klass()->is_leaf_type();
  88   }
  89 }
  90 
  91 
  92 // ------------------------------------------------------------------
  93 // ciArrayKlass::base_element_type
  94 //
  95 // What type is obtained when this array is indexed as many times as possible?
  96 ciArrayKlass* ciArrayKlass::make(ciType* element_type) {
  97   if (element_type->is_primitive_type()) {
  98     return ciTypeArrayKlass::make(element_type->basic_type());
  99   } else {
 100     return ciObjArrayKlass::make(element_type->as_klass());
 101   }
 102 }