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.MemoryAddress;
30 import jdk.incubator.foreign.MemoryLayout;
31 import jdk.incubator.foreign.MemorySegment;
32 import jdk.incubator.foreign.ResourceScope;
33 import jdk.incubator.foreign.SegmentAllocator;
34 import jdk.internal.clang.libclang.CXToken;
35 import jdk.internal.clang.libclang.Index_h;
36 import jdk.internal.clang.libclang.CXUnsavedFile;
37
38 import java.io.IOException;
39 import java.nio.file.Path;
40 import java.util.Objects;
41 import java.util.function.Consumer;
42
43 import static jdk.internal.clang.libclang.Index_h.C_INT;
44 import static jdk.internal.clang.libclang.Index_h.C_POINTER;
45
46 import static jdk.internal.clang.LibClang.IMPLICIT_ALLOCATOR;
47
48 public class TranslationUnit implements AutoCloseable {
49
50 private MemoryAddress tu;
51
52 TranslationUnit(MemoryAddress tu) {
53 this.tu = tu;
54 }
55
56 public Cursor getCursor() {
57 return new Cursor(Index_h.clang_getTranslationUnitCursor(IMPLICIT_ALLOCATOR, tu));
58 }
59
60 public Diagnostic[] getDiagnostics() {
61 int cntDiags = Index_h.clang_getNumDiagnostics(tu);
62 Diagnostic[] rv = new Diagnostic[cntDiags];
63 for (int i = 0; i < cntDiags; i++) {
64 MemoryAddress diag = Index_h.clang_getDiagnostic(tu, i);
65 rv[i] = new Diagnostic(diag);
66 }
67
68 return rv;
69 }
70
71 public final void save(Path path) throws TranslationUnitSaveException {
72 try (ResourceScope scope = ResourceScope.newConfinedScope()) {
73 var allocator = SegmentAllocator.nativeAllocator(scope);
74 MemorySegment pathStr = allocator.allocateUtf8String(path.toAbsolutePath().toString());
75 SaveError res = SaveError.valueOf(Index_h.clang_saveTranslationUnit(tu, pathStr, 0));
76 if (res != SaveError.None) {
77 throw new TranslationUnitSaveException(path, res);
78 }
79 }
80 }
81
82 void processDiagnostics(Consumer<Diagnostic> dh) {
83 Objects.requireNonNull(dh);
84 for (Diagnostic diag : getDiagnostics()) {
85 dh.accept(diag);
86 }
87 }
88
89 static long FILENAME_OFFSET = CXUnsavedFile.$LAYOUT().byteOffset(MemoryLayout.PathElement.groupElement("Filename"));
90 static long CONTENTS_OFFSET = CXUnsavedFile.$LAYOUT().byteOffset(MemoryLayout.PathElement.groupElement("Contents"));
91 static long LENGTH_OFFSET = CXUnsavedFile.$LAYOUT().byteOffset(MemoryLayout.PathElement.groupElement("Length"));
92
93 public void reparse(Index.UnsavedFile... inMemoryFiles) {
94 try (ResourceScope scope = ResourceScope.newConfinedScope()) {
95 var allocator = SegmentAllocator.newNativeArena(scope);
96 MemorySegment files = inMemoryFiles.length == 0 ?
97 null :
98 allocator.allocateArray(CXUnsavedFile.$LAYOUT(), inMemoryFiles.length);
99 for (int i = 0; i < inMemoryFiles.length; i++) {
100 MemorySegment start = files.asSlice(i * CXUnsavedFile.$LAYOUT().byteSize());
101 start.set(C_POINTER, FILENAME_OFFSET, allocator.allocateUtf8String(inMemoryFiles[i].file));
102 start.set(C_POINTER, CONTENTS_OFFSET, allocator.allocateUtf8String(inMemoryFiles[i].contents));
103 start.set(C_INT, LENGTH_OFFSET, inMemoryFiles[i].contents.length());
104 }
105 ErrorCode code = ErrorCode.valueOf(Index_h.clang_reparseTranslationUnit(
106 tu,
107 inMemoryFiles.length,
108 files == null ? MemoryAddress.NULL : files,
109 Index_h.clang_defaultReparseOptions(tu)));
110
111 if (code != ErrorCode.Success) {
112 throw new IllegalStateException("Re-parsing failed: " + code);
113 }
114 }
115 }
116
117 public void reparse(Consumer<Diagnostic> dh, Index.UnsavedFile... inMemoryFiles) {
118 reparse(inMemoryFiles);
119 processDiagnostics(dh);
120 }
121
122 public String[] tokens(SourceRange range) {
123 Tokens tokens = tokenize(range);
124 String rv[] = new String[tokens.size()];
125 for (int i = 0; i < rv.length; i++) {
126 rv[i] = tokens.getToken(i).spelling();
127 }
128 return rv;
129 }
130
131 public Tokens tokenize(SourceRange range) {
132 try (ResourceScope scope = ResourceScope.newConfinedScope()) {
133 MemorySegment p = MemorySegment.allocateNative(C_POINTER, scope);
134 MemorySegment pCnt = MemorySegment.allocateNative(C_INT, scope);
135 Index_h.clang_tokenize(tu, range.range, p, pCnt);
136 Tokens rv = new Tokens(p.get(C_POINTER, 0), pCnt.get(C_INT, 0));
137 return rv;
138 }
139 }
140
141 @Override
142 public void close() {
143 dispose();
144 }
145
146 public void dispose() {
147 if (tu != MemoryAddress.NULL) {
148 Index_h.clang_disposeTranslationUnit(tu);
149 tu = MemoryAddress.NULL;
150 }
151 }
152
153 public class Tokens {
154 private final MemoryAddress ar;
155 private final int size;
156
157 Tokens(MemoryAddress ar, int size) {
158 this.ar = ar;
159 this.size = size;
160 }
161
162 public void dispose() {
163 Index_h.clang_disposeTokens(tu, ar, size);
164 }
165
166 public int size() {
167 return size;
168 }
169
170 public MemorySegment getTokenSegment(int idx) {
171 MemoryAddress p = ar.addOffset(idx * CXToken.$LAYOUT().byteSize());
172 return MemorySegment.ofAddressNative(p, CXToken.$LAYOUT().byteSize(), ResourceScope.newConfinedScope());
173 }
174
175 public Token getToken(int index) {
176 return new Token(getTokenSegment(index));
177 }
178
179 @Override
180 public String toString() {
181 StringBuilder sb = new StringBuilder();
182 for (int i = 0; i < size; i++) {
183 sb.append("Token[");
184 sb.append(i);
185 sb.append("]=");
186 int pos = i;
187 sb.append(LibClang.CXStrToString(allocator ->
188 Index_h.clang_getTokenSpelling(allocator, tu, getTokenSegment(pos))));
189 sb.append("\n");
190 }
191 return sb.toString();
192 }
193 }
194
195 public class Token {
196 final MemorySegment token;
197
198 Token(MemorySegment token) {
199 this.token = token;
200 }
201
202 public int kind() {
203 return Index_h.clang_getTokenKind(token);
204 }
205
206 public String spelling() {
207 return LibClang.CXStrToString(allocator ->
208 Index_h.clang_getTokenSpelling(allocator, tu, token));
209 }
210
211 public SourceLocation getLocation() {
212 return new SourceLocation(Index_h.clang_getTokenLocation(
213 IMPLICIT_ALLOCATOR, tu, token));
214 }
215
216 public SourceRange getExtent() {
217 return new SourceRange(Index_h.clang_getTokenExtent(IMPLICIT_ALLOCATOR,
218 tu, token));
219 }
220 }
221
222 public static class TranslationUnitSaveException extends IOException {
223
224 static final long serialVersionUID = 1L;
225
226 private final SaveError error;
227
228 TranslationUnitSaveException(Path path, SaveError error) {
229 super("Cannot save translation unit to: " + path.toAbsolutePath() + ". Error: " + error);
230 this.error = error;
231 }
232 }
233 }