1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
|
/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
****************************************************************************/
#include "sourcerangeextractor.h"
#include "sourcelocationsutils.h"
#include <sourcerangescontainer.h>
#if defined(__GNUC__)
# pragma GCC diagnostic push
# pragma GCC diagnostic ignored "-Wunused-parameter"
#elif defined(_MSC_VER)
# pragma warning(push)
# pragma warning( disable : 4100 )
#endif
#include <clang/Basic/SourceManager.h>
#include <clang/Lex/Lexer.h>
#include <llvm/Support/FileSystem.h>
#include <llvm/Support/FileUtilities.h>
#include <llvm/ADT/SmallVector.h>
#if defined(__GNUC__)
# pragma GCC diagnostic pop
#elif defined(_MSC_VER)
# pragma warning(pop)
#endif
namespace ClangBackEnd {
SourceRangeExtractor::SourceRangeExtractor(
const clang::SourceManager &sourceManager,
const clang::LangOptions &languageOptions,
ClangBackEnd::StringCache<Utils::PathString, std::mutex> &filePathCache,
SourceRangesContainer &sourceRangesContainer)
: sourceManager(sourceManager),
languageOptions(languageOptions),
filePathCache(filePathCache),
sourceRangesContainer(sourceRangesContainer)
{
}
namespace {
template<typename Iterator>
std::reverse_iterator<Iterator> make_reverse_iterator(Iterator iterator)
{
return std::reverse_iterator<Iterator>(iterator);
}
}
const char *SourceRangeExtractor::findStartOfLineInBuffer(llvm::StringRef buffer, uint startOffset)
{
auto beginText = buffer.begin() + startOffset;
auto reverseBegin = make_reverse_iterator(beginText);
auto reverseEnd = make_reverse_iterator(buffer.begin());
auto found = std::find_if(reverseBegin,
reverseEnd,
[] (const char character) {
return character == '\n' || character == '\r';
});
if (found != reverseEnd)
return found.base();
return buffer.begin();
}
const char *SourceRangeExtractor::findEndOfLineInBuffer(llvm::StringRef buffer, uint endOffset)
{
auto beginText = buffer.begin() + endOffset;
auto found = std::find_if(beginText,
buffer.end(),
[] (const char character) {
return character == '\n' || character == '\r';
});
if (found != buffer.end())
return found;
return buffer.end();
}
Utils::SmallString SourceRangeExtractor::getExpandedText(llvm::StringRef buffer,
uint startOffset,
uint endOffset)
{
auto startBuffer = findStartOfLineInBuffer(buffer, startOffset);
auto endBuffer = findEndOfLineInBuffer(buffer, endOffset);
return Utils::SmallString(startBuffer, endBuffer);
}
const clang::SourceRange SourceRangeExtractor::extendSourceRangeToLastTokenEnd(const clang::SourceRange sourceRange)
{
auto endLocation = sourceRange.getEnd();
uint length = clang::Lexer::MeasureTokenLength(sourceManager.getSpellingLoc(endLocation),
sourceManager,
languageOptions);
endLocation = endLocation.getLocWithOffset(length);
return {sourceRange.getBegin(), endLocation};
}
void SourceRangeExtractor::insertSourceRange(uint fileId,
Utils::PathString &&filePath,
const clang::FullSourceLoc &startLocation,
uint startOffset,
const clang::FullSourceLoc &endLocation,
uint endOffset,
Utils::SmallString &&lineSnippet)
{
sourceRangesContainer.insertFilePath(fileId, std::move(filePath));
sourceRangesContainer.insertSourceRange(fileId,
startLocation.getSpellingLineNumber(),
startLocation.getSpellingColumnNumber(),
startOffset,
endLocation.getSpellingLineNumber(),
endLocation.getSpellingColumnNumber(),
endOffset,
std::move(lineSnippet));
}
uint SourceRangeExtractor::findFileId(clang::FileID fileId, const clang::FileEntry *fileEntry) const
{
auto found = m_fileIdMapping.find(fileId.getHashValue());
if (found != m_fileIdMapping.end()) {
return found->second;
}
auto filePath = absolutePath(fileEntry->tryGetRealPathName());
return filePathCache.stringId(fromNativePath(filePath));
}
void SourceRangeExtractor::addSourceRange(const clang::SourceRange &sourceRange)
{
auto extendedSourceRange = extendSourceRangeToLastTokenEnd(sourceRange);
clang::FullSourceLoc startSourceLocation(extendedSourceRange.getBegin(), sourceManager);
clang::FullSourceLoc endSourceLocation(extendedSourceRange.getEnd(), sourceManager);
if (startSourceLocation.isFileID() && endSourceLocation.isFileID()) {
const auto startDecomposedLoction = startSourceLocation.getDecomposedLoc();
const auto endDecomposedLoction = endSourceLocation.getDecomposedLoc();
const auto fileId = startDecomposedLoction.first;
const auto startOffset = startDecomposedLoction.second;
const auto endOffset = endDecomposedLoction.second;
const auto fileEntry = sourceManager.getFileEntryForID(fileId);
Utils::SmallString lineSnippet = getExpandedText(startSourceLocation.getBufferData(),
startOffset,
endOffset);
insertSourceRange(findFileId(fileId, fileEntry),
fromNativePath(fileEntry->tryGetRealPathName()),
startSourceLocation,
startOffset,
endSourceLocation,
endOffset,
std::move(lineSnippet));
}
}
void SourceRangeExtractor::addSourceRanges(const std::vector<clang::SourceRange> &sourceRanges)
{
sourceRangesContainer.reserve(sourceRanges.size() + sourceRangeWithTextContainers().size());
for (const clang::SourceRange &sourceRange : sourceRanges)
addSourceRange(sourceRange);
}
const std::vector<SourceRangeWithTextContainer> &SourceRangeExtractor::sourceRangeWithTextContainers() const
{
return sourceRangesContainer.sourceRangeWithTextContainers();
}
} // namespace ClangBackEnd
|
