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 package jdk.internal.jextract.impl;
27
28 import jdk.incubator.jextract.Declaration;
29 import jdk.internal.clang.Cursor;
30 import jdk.internal.clang.CursorKind;
31 import jdk.internal.clang.Diagnostic;
32 import jdk.internal.clang.Index;
33 import jdk.internal.clang.LibClang;
34 import jdk.internal.clang.SourceLocation;
35 import jdk.internal.clang.SourceRange;
36 import jdk.internal.clang.TranslationUnit;
37
38 import java.nio.file.Path;
39 import java.util.ArrayList;
40 import java.util.Collection;
41 import java.util.List;
42 import java.util.Optional;
43
44 public class Parser {
45 private final TreeMaker treeMaker;
46
47 public Parser() {
48 this.treeMaker = new TreeMaker();
49 }
50
51 public Declaration.Scoped parse(Path path, Collection<String> args) {
52 final Index index = LibClang.createIndex(false);
53
54 TranslationUnit tu = index.parse(path.toString(),
55 d -> {
56 if (d.severity() > Diagnostic.CXDiagnostic_Warning) {
57 throw new ClangException(d.toString());
58 }
59 },
60 true, args.toArray(new String[0]));
61
62 MacroParserImpl macroParser = MacroParserImpl.make(treeMaker, tu, args);
63
64 List<Declaration> decls = new ArrayList<>();
65 Cursor tuCursor = tu.getCursor();
66 tuCursor.children().
67 forEach(c -> {
68 SourceLocation loc = c.getSourceLocation();
69 if (loc == null) {
70 return;
71 }
72
73 SourceLocation.Location src = loc.getFileLocation();
74 if (src == null) {
75 return;
76 }
77
78
79 if (c.isDeclaration()) {
80 if (c.kind() == CursorKind.UnexposedDecl ||
81 c.kind() == CursorKind.Namespace) {
82 c.children().map(treeMaker::createTree)
83 .filter(t -> t != null)
84 .forEach(decls::add);
85 } else {
86 Declaration decl = treeMaker.createTree(c);
87 if (decl != null) {
88 decls.add(decl);
89 }
90 }
91 } else if (isMacro(c) && src.path() != null) {
92 SourceRange range = c.getExtent();
93 String[] tokens = c.getTranslationUnit().tokens(range);
94 Optional<Declaration.Constant> constant = macroParser.parseConstant(treeMaker.toPos(c), c.spelling(), tokens);
95 if (constant.isPresent()) {
96 decls.add(constant.get());
97 }
98 }
99 });
100
101 decls.addAll(macroParser.macroTable.reparseConstants());
102 Declaration.Scoped rv = treeMaker.createHeader(tuCursor, decls);
103 treeMaker.freeze();
104 index.close();
105 return rv;
106 }
107
108 private boolean isMacro(Cursor c) {
109 return c.isPreprocessing() && c.kind() == CursorKind.MacroDefinition;
110 }
111 }