1 //===- SourceCoverageView.cpp - Code coverage view for source code --------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 /// \file This class implements rendering for code coverage of source code.
12 //===----------------------------------------------------------------------===//
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"
25 void CoveragePrinter::StreamDestructor::operator()(raw_ostream *OS) const {
31 std::string CoveragePrinter::getOutputPath(StringRef Path, StringRef Extension,
33 bool Relative) const {
34 assert(Extension.size() && "The file extension may not be empty");
36 SmallString<256> FullPath;
39 FullPath.append(Opts.ShowOutputDirectory);
42 sys::path::append(FullPath, getCoverageDir());
44 SmallString<256> ParentPath = sys::path::parent_path(Path);
45 sys::path::remove_dots(ParentPath, /*remove_dot_dots=*/true);
46 sys::path::append(FullPath, sys::path::relative_path(ParentPath));
48 auto PathFilename = (sys::path::filename(Path) + "." + Extension).str();
49 sys::path::append(FullPath, PathFilename);
50 sys::path::native(FullPath);
52 return FullPath.str();
55 Expected<CoveragePrinter::OwnedStream>
56 CoveragePrinter::createOutputStream(StringRef Path, StringRef Extension,
57 bool InToplevel) const {
58 if (!Opts.hasOutputDirectory())
59 return OwnedStream(&outs());
61 std::string FullPath = getOutputPath(Path, Extension, InToplevel, false);
63 auto ParentDir = sys::path::parent_path(FullPath);
64 if (auto E = sys::fs::create_directories(ParentDir))
65 return errorCodeToError(E);
68 raw_ostream *RawStream =
69 new raw_fd_ostream(FullPath, E, sys::fs::FA_Read | sys::fs::FA_Write);
70 auto OS = CoveragePrinter::OwnedStream(RawStream);
72 return errorCodeToError(E);
76 std::unique_ptr<CoveragePrinter>
77 CoveragePrinter::create(const CoverageViewOptions &Opts) {
78 switch (Opts.Format) {
79 case CoverageViewOptions::OutputFormat::Text:
80 return llvm::make_unique<CoveragePrinterText>(Opts);
81 case CoverageViewOptions::OutputFormat::HTML:
82 return llvm::make_unique<CoveragePrinterHTML>(Opts);
84 llvm_unreachable("Unknown coverage output format!");
87 unsigned SourceCoverageView::getFirstUncoveredLineNo() {
88 const auto MinSegIt = find_if(CoverageInfo, [](const CoverageSegment &S) {
89 return S.HasCount && S.Count == 0;
92 // There is no uncovered line, return zero.
93 if (MinSegIt == CoverageInfo.end())
96 return (*MinSegIt).Line;
99 std::string SourceCoverageView::formatCount(uint64_t N) {
100 std::string Number = utostr(N);
101 int Len = Number.size();
104 int IntLen = Len % 3 == 0 ? 3 : Len % 3;
105 std::string Result(Number.data(), IntLen);
107 Result.push_back('.');
108 Result += Number.substr(IntLen, 3 - IntLen);
110 Result.push_back(" kMGTPEZY"[(Len - 1) / 3]);
114 bool SourceCoverageView::shouldRenderRegionMarkers(
115 const LineCoverageStats &LCS) const {
116 if (!getOptions().ShowRegionMarkers)
119 CoverageSegmentArray Segments = LCS.getLineSegments();
120 if (Segments.empty())
122 for (unsigned I = 0, E = Segments.size() - 1; I < E; ++I) {
123 const auto *CurSeg = Segments[I];
124 if (!CurSeg->IsRegionEntry || CurSeg->Count == LCS.getExecutionCount())
131 bool SourceCoverageView::hasSubViews() const {
132 return !ExpansionSubViews.empty() || !InstantiationSubViews.empty();
135 std::unique_ptr<SourceCoverageView>
136 SourceCoverageView::create(StringRef SourceName, const MemoryBuffer &File,
137 const CoverageViewOptions &Options,
138 CoverageData &&CoverageInfo) {
139 switch (Options.Format) {
140 case CoverageViewOptions::OutputFormat::Text:
141 return llvm::make_unique<SourceCoverageViewText>(
142 SourceName, File, Options, std::move(CoverageInfo));
143 case CoverageViewOptions::OutputFormat::HTML:
144 return llvm::make_unique<SourceCoverageViewHTML>(
145 SourceName, File, Options, std::move(CoverageInfo));
147 llvm_unreachable("Unknown coverage output format!");
150 std::string SourceCoverageView::getSourceName() const {
151 SmallString<128> SourceText(SourceName);
152 sys::path::remove_dots(SourceText, /*remove_dot_dots=*/true);
153 sys::path::native(SourceText);
154 return SourceText.str();
157 void SourceCoverageView::addExpansion(
158 const CounterMappingRegion &Region,
159 std::unique_ptr<SourceCoverageView> View) {
160 ExpansionSubViews.emplace_back(Region, std::move(View));
163 void SourceCoverageView::addInstantiation(
164 StringRef FunctionName, unsigned Line,
165 std::unique_ptr<SourceCoverageView> View) {
166 InstantiationSubViews.emplace_back(FunctionName, Line, std::move(View));
169 void SourceCoverageView::print(raw_ostream &OS, bool WholeFile,
170 bool ShowSourceName, bool ShowTitle,
171 unsigned ViewDepth) {
173 renderTitle(OS, "Coverage Report");
175 renderViewHeader(OS);
178 renderSourceName(OS, WholeFile);
180 renderTableHeader(OS, (ViewDepth > 0) ? 0 : getFirstUncoveredLineNo(),
183 // We need the expansions and instantiations sorted so we can go through them
184 // while we iterate lines.
185 std::stable_sort(ExpansionSubViews.begin(), ExpansionSubViews.end());
186 std::stable_sort(InstantiationSubViews.begin(), InstantiationSubViews.end());
187 auto NextESV = ExpansionSubViews.begin();
188 auto EndESV = ExpansionSubViews.end();
189 auto NextISV = InstantiationSubViews.begin();
190 auto EndISV = InstantiationSubViews.end();
192 // Get the coverage information for the file.
193 auto StartSegment = CoverageInfo.begin();
194 auto EndSegment = CoverageInfo.end();
195 LineCoverageIterator LCI{CoverageInfo, 1};
196 LineCoverageIterator LCIEnd = LCI.getEnd();
198 unsigned FirstLine = StartSegment != EndSegment ? StartSegment->Line : 0;
199 for (line_iterator LI(File, /*SkipBlanks=*/false); !LI.is_at_eof();
201 // If we aren't rendering the whole file, we need to filter out the prologue
206 else if (LI.line_number() < FirstLine)
210 renderLinePrefix(OS, ViewDepth);
211 if (getOptions().ShowLineNumbers)
212 renderLineNumberColumn(OS, LI.line_number());
214 if (getOptions().ShowLineStats)
215 renderLineCoverageColumn(OS, *LCI);
217 // If there are expansion subviews, we want to highlight the first one.
218 unsigned ExpansionColumn = 0;
219 if (NextESV != EndESV && NextESV->getLine() == LI.line_number() &&
221 ExpansionColumn = NextESV->getStartCol();
223 // Display the source code for the current line.
224 renderLine(OS, {*LI, LI.line_number()}, *LCI, ExpansionColumn, ViewDepth);
226 // Show the region markers.
227 if (shouldRenderRegionMarkers(*LCI))
228 renderRegionMarkers(OS, *LCI, ViewDepth);
230 // Show the expansions and instantiations for this line.
231 bool RenderedSubView = false;
232 for (; NextESV != EndESV && NextESV->getLine() == LI.line_number();
234 renderViewDivider(OS, ViewDepth + 1);
236 // Re-render the current line and highlight the expansion range for
238 if (RenderedSubView) {
239 ExpansionColumn = NextESV->getStartCol();
240 renderExpansionSite(OS, {*LI, LI.line_number()}, *LCI, ExpansionColumn,
242 renderViewDivider(OS, ViewDepth + 1);
245 renderExpansionView(OS, *NextESV, ViewDepth + 1);
246 RenderedSubView = true;
248 for (; NextISV != EndISV && NextISV->Line == LI.line_number(); ++NextISV) {
249 renderViewDivider(OS, ViewDepth + 1);
250 renderInstantiationView(OS, *NextISV, ViewDepth + 1);
251 RenderedSubView = true;
254 renderViewDivider(OS, ViewDepth + 1);
255 renderLineSuffix(OS, ViewDepth);
258 renderViewFooter(OS);