1 /*
2 * Copyright (c) 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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 *
25 */
26
27 package jdk.internal.clang;
28
29 import jdk.incubator.foreign.CLinker;
30 import jdk.incubator.foreign.MemoryAddress;
31 import jdk.incubator.foreign.MemorySegment;
32 import jdk.internal.clang.libclang.Index_h;
33
34 public class EvalResult implements AutoCloseable {
35 private MemoryAddress ptr;
36
37 public EvalResult(MemoryAddress ptr) {
38 this.ptr = ptr;
39 }
40
41 public enum Kind {
42 Integral,
43 FloatingPoint,
44 StrLiteral,
45 Erroneous,
46 Unknown
47 }
48
49 private int getKind0() {
50 return Index_h.clang_EvalResult_getKind(ptr);
51 }
52
53 public Kind getKind() {
54 int code = getKind0();
55 switch (code) {
56 case 1: return Kind.Integral;
57 case 2: return Kind.FloatingPoint;
58 case 3: case 4: case 5:
59 return Kind.StrLiteral;
60 default:
61 return Kind.Unknown;
62 }
63 }
64
65 private long getAsInt0() {
66 return Index_h.clang_EvalResult_getAsLongLong(ptr);
67 }
68
69 public long getAsInt() {
70 Kind kind = getKind();
71 switch (kind) {
72 case Integral:
73 return getAsInt0();
74 default:
75 throw new IllegalStateException("Unexpected kind: " + kind);
76 }
77 }
78
79 private double getAsFloat0() {
80 return Index_h.clang_EvalResult_getAsDouble(ptr);
81 }
82
83 public double getAsFloat() {
84 Kind kind = getKind();
85 switch (kind) {
86 case FloatingPoint:
87 return getAsFloat0();
88 default:
89 throw new IllegalStateException("Unexpected kind: " + kind);
90 }
91 }
92
93 private String getAsString0() {
94 MemoryAddress value = Index_h.clang_EvalResult_getAsStr(ptr);
95 return value.getUtf8String(0);
96 }
97
98 public String getAsString() {
99 Kind kind = getKind();
100 switch (kind) {
101 case StrLiteral:
102 return getAsString0();
103 default:
104 throw new IllegalStateException("Unexpected kind: " + kind);
105 }
106 }
107
108 @Override
109 public void close() {
110 if (ptr != MemoryAddress.NULL) {
111 Index_h.clang_EvalResult_dispose(ptr);
112 ptr = MemoryAddress.NULL;
113 }
114 }
115
116 final static EvalResult erroneous = new EvalResult(MemoryAddress.NULL) {
117 @Override
118 public Kind getKind() {
119 return Kind.Erroneous;
120 }
121
122 @Override
123 public void close() {
124 //do nothing
125 }
126 };
127 }