1 /*
 2  * Copyright (c) 1999, 2019, 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 #ifndef SHARE_CI_CIARRAY_HPP
26 #define SHARE_CI_CIARRAY_HPP
27 
28 #include "ci/ciArrayKlass.hpp"
29 #include "ci/ciConstant.hpp"
30 #include "ci/ciObject.hpp"
31 #include "oops/arrayOop.hpp"
32 #include "oops/objArrayOop.hpp"
33 #include "oops/typeArrayOop.hpp"
34 
35 // ciArray
36 //
37 // This class represents an arrayOop in the HotSpot virtual
38 // machine.
39 class ciArray : public ciObject {
40 private:
41   int _length;
42 
43 protected:
44   ciArray( objArrayHandle h_a) : ciObject(h_a), _length(h_a()->length()) {}
45   ciArray(typeArrayHandle h_a) : ciObject(h_a), _length(h_a()->length()) {}
46 
47   arrayOop get_arrayOop() const { return (arrayOop)get_oop(); }
48 
49   const char* type_string() { return "ciArray"; }
50 
51   void print_impl(outputStream* st);
52 
53   ciConstant element_value_impl(BasicType elembt, arrayOop ary, int index);
54 
55 public:
56   int length() { return _length; }
57 
58   // Convenience routines.
59   ciArrayKlass* array_type()         { return klass()->as_array_klass(); }
60   ciType*       element_type()       { return array_type()->element_type(); }
61   BasicType     element_basic_type() { return element_type()->basic_type(); }
62 
63   // Current value of an element.
64   // Returns T_ILLEGAL if there is no element at the given index.
65   ciConstant element_value(int index);
66 
67   // Current value of an element at the specified offset.
68   // Returns T_ILLEGAL if there is no element at the given offset.
69   ciConstant element_value_by_offset(intptr_t element_offset);
70 
71   // What kind of ciObject is this?
72   bool is_array()        { return true; }
73 };
74 
75 #endif // SHARE_CI_CIARRAY_HPP