1 /*
2 * Copyright (c) 1999, 2020, 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/flatArrayOop.hpp"
33 #include "oops/objArrayOop.hpp"
34 #include "oops/typeArrayOop.hpp"
35
36 // ciArray
37 //
38 // This class represents an arrayOop in the HotSpot virtual
39 // machine.
40 class ciArray : public ciObject {
41 private:
42 int _length;
43
44 protected:
45 ciArray( objArrayHandle h_a) : ciObject(h_a), _length(h_a()->length()) {}
46 ciArray(typeArrayHandle h_a) : ciObject(h_a), _length(h_a()->length()) {}
47 ciArray(flatArrayHandle h_a) : ciObject(h_a), _length(h_a()->length()) {}
48
49 arrayOop get_arrayOop() const { return (arrayOop)get_oop(); }
50
51 const char* type_string() { return "ciArray"; }
52
53 void print_impl(outputStream* st);
54
55 ciConstant element_value_impl(BasicType elembt, arrayOop ary, int index);
56
57 public:
58 int length() { return _length; }
59
60 // Convenience routines.
61 ciArrayKlass* array_type() { return klass()->as_array_klass(); }
62 ciType* element_type() { return array_type()->element_type(); }
63 BasicType element_basic_type() { return element_type()->basic_type(); }
64
65 // Current value of an element.
66 // Returns T_ILLEGAL if there is no element at the given index.
67 ciConstant element_value(int index);
68
69 // Current value of an element at the specified offset.
70 // Returns T_ILLEGAL if there is no element at the given offset.
71 ciConstant element_value_by_offset(intptr_t element_offset);
72
73 // What kind of ciObject is this?
74 bool is_array() { return true; }
75
76 virtual bool is_flat() { return false; }
77 virtual bool is_null_free() { return false; }
78 };
79
80 #endif // SHARE_CI_CIARRAY_HPP