1 //===- SourceCoverageView.cpp - Code coverage view for source code --------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 ///
10 /// \file This class implements rendering for code coverage of source code.
11 ///
12 //===----------------------------------------------------------------------===//
13
14 #include "SourceCoverageView.h"
15 #include "SourceCoverageViewHTML.h"
16 #include "SourceCoverageViewText.h"
17 #include "llvm/ADT/SmallString.h"
18 #include "llvm/ADT/StringExtras.h"
19 #include "llvm/Support/FileSystem.h"
20 #include "llvm/Support/LineIterator.h"
21 #include "llvm/Support/Path.h"
22
23 using namespace llvm;
24
operator ()(raw_ostream * OS) const25 void CoveragePrinter::StreamDestructor::operator()(raw_ostream *OS) const {
26 if (OS == &outs())
27 return;
28 delete OS;
29 }
30
getOutputPath(StringRef Path,StringRef Extension,bool InToplevel,bool Relative)31 std::string CoveragePrinter::getOutputPath(StringRef Path, StringRef Extension,
32 bool InToplevel, bool Relative) {
33 assert(Extension.size() && "The file extension may not be empty");
34
35 SmallString<256> FullPath;
36
37 if (!Relative)
38 FullPath.append(Opts.ShowOutputDirectory);
39
40 if (!InToplevel)
41 sys::path::append(FullPath, getCoverageDir());
42
43 SmallString<256> ParentPath = sys::path::parent_path(Path);
44 sys::path::remove_dots(ParentPath, /*remove_dot_dots=*/true);
45 sys::path::append(FullPath, sys::path::relative_path(ParentPath));
46
47 auto PathFilename = (sys::path::filename(Path) + "." + Extension).str();
48 sys::path::append(FullPath, PathFilename);
49
50 return FullPath.str();
51 }
52
53 Expected<CoveragePrinter::OwnedStream>
createOutputStream(StringRef Path,StringRef Extension,bool InToplevel)54 CoveragePrinter::createOutputStream(StringRef Path, StringRef Extension,
55 bool InToplevel) {
56 if (!Opts.hasOutputDirectory())
57 return OwnedStream(&outs());
58
59 std::string FullPath = getOutputPath(Path, Extension, InToplevel, false);
60
61 auto ParentDir = sys::path::parent_path(FullPath);
62 if (auto E = sys::fs::create_directories(ParentDir))
63 return errorCodeToError(E);
64
65 std::error_code E;
66 raw_ostream *RawStream = new raw_fd_ostream(FullPath, E, sys::fs::F_RW);
67 auto OS = CoveragePrinter::OwnedStream(RawStream);
68 if (E)
69 return errorCodeToError(E);
70 return std::move(OS);
71 }
72
73 std::unique_ptr<CoveragePrinter>
create(const CoverageViewOptions & Opts)74 CoveragePrinter::create(const CoverageViewOptions &Opts) {
75 switch (Opts.Format) {
76 case CoverageViewOptions::OutputFormat::Text:
77 return llvm::make_unique<CoveragePrinterText>(Opts);
78 case CoverageViewOptions::OutputFormat::HTML:
79 return llvm::make_unique<CoveragePrinterHTML>(Opts);
80 }
81 llvm_unreachable("Unknown coverage output format!");
82 }
83
formatCount(uint64_t N)84 std::string SourceCoverageView::formatCount(uint64_t N) {
85 std::string Number = utostr(N);
86 int Len = Number.size();
87 if (Len <= 3)
88 return Number;
89 int IntLen = Len % 3 == 0 ? 3 : Len % 3;
90 std::string Result(Number.data(), IntLen);
91 if (IntLen != 3) {
92 Result.push_back('.');
93 Result += Number.substr(IntLen, 3 - IntLen);
94 }
95 Result.push_back(" kMGTPEZY"[(Len - 1) / 3]);
96 return Result;
97 }
98
shouldRenderRegionMarkers(bool LineHasMultipleRegions) const99 bool SourceCoverageView::shouldRenderRegionMarkers(
100 bool LineHasMultipleRegions) const {
101 return getOptions().ShowRegionMarkers &&
102 (!getOptions().ShowLineStatsOrRegionMarkers || LineHasMultipleRegions);
103 }
104
hasSubViews() const105 bool SourceCoverageView::hasSubViews() const {
106 return !ExpansionSubViews.empty() || !InstantiationSubViews.empty();
107 }
108
109 std::unique_ptr<SourceCoverageView>
create(StringRef SourceName,const MemoryBuffer & File,const CoverageViewOptions & Options,coverage::CoverageData && CoverageInfo)110 SourceCoverageView::create(StringRef SourceName, const MemoryBuffer &File,
111 const CoverageViewOptions &Options,
112 coverage::CoverageData &&CoverageInfo) {
113 switch (Options.Format) {
114 case CoverageViewOptions::OutputFormat::Text:
115 return llvm::make_unique<SourceCoverageViewText>(SourceName, File, Options,
116 std::move(CoverageInfo));
117 case CoverageViewOptions::OutputFormat::HTML:
118 return llvm::make_unique<SourceCoverageViewHTML>(SourceName, File, Options,
119 std::move(CoverageInfo));
120 }
121 llvm_unreachable("Unknown coverage output format!");
122 }
123
addExpansion(const coverage::CounterMappingRegion & Region,std::unique_ptr<SourceCoverageView> View)124 void SourceCoverageView::addExpansion(
125 const coverage::CounterMappingRegion &Region,
126 std::unique_ptr<SourceCoverageView> View) {
127 ExpansionSubViews.emplace_back(Region, std::move(View));
128 }
129
addInstantiation(StringRef FunctionName,unsigned Line,std::unique_ptr<SourceCoverageView> View)130 void SourceCoverageView::addInstantiation(
131 StringRef FunctionName, unsigned Line,
132 std::unique_ptr<SourceCoverageView> View) {
133 InstantiationSubViews.emplace_back(FunctionName, Line, std::move(View));
134 }
135
print(raw_ostream & OS,bool WholeFile,bool ShowSourceName,unsigned ViewDepth)136 void SourceCoverageView::print(raw_ostream &OS, bool WholeFile,
137 bool ShowSourceName, unsigned ViewDepth) {
138 if (ShowSourceName)
139 renderSourceName(OS);
140
141 renderViewHeader(OS);
142
143 // We need the expansions and instantiations sorted so we can go through them
144 // while we iterate lines.
145 std::sort(ExpansionSubViews.begin(), ExpansionSubViews.end());
146 std::sort(InstantiationSubViews.begin(), InstantiationSubViews.end());
147 auto NextESV = ExpansionSubViews.begin();
148 auto EndESV = ExpansionSubViews.end();
149 auto NextISV = InstantiationSubViews.begin();
150 auto EndISV = InstantiationSubViews.end();
151
152 // Get the coverage information for the file.
153 auto NextSegment = CoverageInfo.begin();
154 auto EndSegment = CoverageInfo.end();
155
156 unsigned FirstLine = NextSegment != EndSegment ? NextSegment->Line : 0;
157 const coverage::CoverageSegment *WrappedSegment = nullptr;
158 SmallVector<const coverage::CoverageSegment *, 8> LineSegments;
159 for (line_iterator LI(File, /*SkipBlanks=*/false); !LI.is_at_eof(); ++LI) {
160 // If we aren't rendering the whole file, we need to filter out the prologue
161 // and epilogue.
162 if (!WholeFile) {
163 if (NextSegment == EndSegment)
164 break;
165 else if (LI.line_number() < FirstLine)
166 continue;
167 }
168
169 // Collect the coverage information relevant to this line.
170 if (LineSegments.size())
171 WrappedSegment = LineSegments.back();
172 LineSegments.clear();
173 while (NextSegment != EndSegment && NextSegment->Line == LI.line_number())
174 LineSegments.push_back(&*NextSegment++);
175
176 // Calculate a count to be for the line as a whole.
177 LineCoverageStats LineCount;
178 if (WrappedSegment && WrappedSegment->HasCount)
179 LineCount.addRegionCount(WrappedSegment->Count);
180 for (const auto *S : LineSegments)
181 if (S->HasCount && S->IsRegionEntry)
182 LineCount.addRegionStartCount(S->Count);
183
184 renderLinePrefix(OS, ViewDepth);
185 if (getOptions().ShowLineStats)
186 renderLineCoverageColumn(OS, LineCount);
187 if (getOptions().ShowLineNumbers)
188 renderLineNumberColumn(OS, LI.line_number());
189
190 // If there are expansion subviews, we want to highlight the first one.
191 unsigned ExpansionColumn = 0;
192 if (NextESV != EndESV && NextESV->getLine() == LI.line_number() &&
193 getOptions().Colors)
194 ExpansionColumn = NextESV->getStartCol();
195
196 // Display the source code for the current line.
197 renderLine(OS, {*LI, LI.line_number()}, WrappedSegment, LineSegments,
198 ExpansionColumn, ViewDepth);
199
200 // Show the region markers.
201 if (shouldRenderRegionMarkers(LineCount.hasMultipleRegions()))
202 renderRegionMarkers(OS, LineSegments, ViewDepth);
203
204 // Show the expansions and instantiations for this line.
205 bool RenderedSubView = false;
206 for (; NextESV != EndESV && NextESV->getLine() == LI.line_number();
207 ++NextESV) {
208 renderViewDivider(OS, ViewDepth + 1);
209
210 // Re-render the current line and highlight the expansion range for
211 // this subview.
212 if (RenderedSubView) {
213 ExpansionColumn = NextESV->getStartCol();
214 renderExpansionSite(OS, {*LI, LI.line_number()}, WrappedSegment,
215 LineSegments, ExpansionColumn, ViewDepth);
216 renderViewDivider(OS, ViewDepth + 1);
217 }
218
219 renderExpansionView(OS, *NextESV, ViewDepth + 1);
220 RenderedSubView = true;
221 }
222 for (; NextISV != EndISV && NextISV->Line == LI.line_number(); ++NextISV) {
223 renderViewDivider(OS, ViewDepth + 1);
224 renderInstantiationView(OS, *NextISV, ViewDepth + 1);
225 RenderedSubView = true;
226 }
227 if (RenderedSubView)
228 renderViewDivider(OS, ViewDepth + 1);
229 renderLineSuffix(OS, ViewDepth);
230 }
231
232 renderViewFooter(OS);
233 }
234