1//===- SourceCoverageViewHTML.cpp - A html code coverage view -------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8///
9/// \file This file implements the html coverage renderer.
10///
11//===----------------------------------------------------------------------===//
12
13#include "CoverageReport.h"
14#include "SourceCoverageViewHTML.h"
15#include "llvm/ADT/Optional.h"
16#include "llvm/ADT/SmallString.h"
17#include "llvm/ADT/StringExtras.h"
18#include "llvm/Support/Format.h"
19#include "llvm/Support/Path.h"
20
21using namespace llvm;
22
23namespace {
24
25// Return a string with the special characters in \p Str escaped.
26std::string escape(StringRef Str, const CoverageViewOptions &Opts) {
27  std::string TabExpandedResult;
28  unsigned ColNum = 0; // Record the column number.
29  for (char C : Str) {
30    if (C == '\t') {
31      // Replace '\t' with up to TabSize spaces.
32      unsigned NumSpaces = Opts.TabSize - (ColNum % Opts.TabSize);
33      TabExpandedResult.append(NumSpaces, ' ');
34      ColNum += NumSpaces;
35    } else {
36      TabExpandedResult += C;
37      if (C == '\n' || C == '\r')
38        ColNum = 0;
39      else
40        ++ColNum;
41    }
42  }
43  std::string EscapedHTML;
44  {
45    raw_string_ostream OS{EscapedHTML};
46    printHTMLEscaped(TabExpandedResult, OS);
47  }
48  return EscapedHTML;
49}
50
51// Create a \p Name tag around \p Str, and optionally set its \p ClassName.
52std::string tag(const std::string &Name, const std::string &Str,
53                const std::string &ClassName = "") {
54  std::string Tag = "<" + Name;
55  if (!ClassName.empty())
56    Tag += " class='" + ClassName + "'";
57  return Tag + ">" + Str + "</" + Name + ">";
58}
59
60// Create an anchor to \p Link with the label \p Str.
61std::string a(const std::string &Link, const std::string &Str,
62              const std::string &TargetName = "") {
63  std::string Name = TargetName.empty() ? "" : ("name='" + TargetName + "' ");
64  return "<a " + Name + "href='" + Link + "'>" + Str + "</a>";
65}
66
67const char *BeginHeader =
68  "<head>"
69    "<meta name='viewport' content='width=device-width,initial-scale=1'>"
70    "<meta charset='UTF-8'>";
71
72const char *CSSForCoverage =
73    R"(.red {
74  background-color: #ffd0d0;
75}
76.cyan {
77  background-color: cyan;
78}
79body {
80  font-family: -apple-system, sans-serif;
81}
82pre {
83  margin-top: 0px !important;
84  margin-bottom: 0px !important;
85}
86.source-name-title {
87  padding: 5px 10px;
88  border-bottom: 1px solid #dbdbdb;
89  background-color: #eee;
90  line-height: 35px;
91}
92.centered {
93  display: table;
94  margin-left: left;
95  margin-right: auto;
96  border: 1px solid #dbdbdb;
97  border-radius: 3px;
98}
99.expansion-view {
100  background-color: rgba(0, 0, 0, 0);
101  margin-left: 0px;
102  margin-top: 5px;
103  margin-right: 5px;
104  margin-bottom: 5px;
105  border: 1px solid #dbdbdb;
106  border-radius: 3px;
107}
108table {
109  border-collapse: collapse;
110}
111.light-row {
112  background: #ffffff;
113  border: 1px solid #dbdbdb;
114}
115.light-row-bold {
116  background: #ffffff;
117  border: 1px solid #dbdbdb;
118  font-weight: bold;
119}
120.column-entry {
121  text-align: left;
122}
123.column-entry-bold {
124  font-weight: bold;
125  text-align: left;
126}
127.column-entry-yellow {
128  text-align: left;
129  background-color: #ffffd0;
130}
131.column-entry-yellow:hover {
132  background-color: #fffff0;
133}
134.column-entry-red {
135  text-align: left;
136  background-color: #ffd0d0;
137}
138.column-entry-red:hover {
139  background-color: #fff0f0;
140}
141.column-entry-green {
142  text-align: left;
143  background-color: #d0ffd0;
144}
145.column-entry-green:hover {
146  background-color: #f0fff0;
147}
148.line-number {
149  text-align: right;
150  color: #aaa;
151}
152.covered-line {
153  text-align: right;
154  color: #0080ff;
155}
156.uncovered-line {
157  text-align: right;
158  color: #ff3300;
159}
160.tooltip {
161  position: relative;
162  display: inline;
163  background-color: #b3e6ff;
164  text-decoration: none;
165}
166.tooltip span.tooltip-content {
167  position: absolute;
168  width: 100px;
169  margin-left: -50px;
170  color: #FFFFFF;
171  background: #000000;
172  height: 30px;
173  line-height: 30px;
174  text-align: center;
175  visibility: hidden;
176  border-radius: 6px;
177}
178.tooltip span.tooltip-content:after {
179  content: '';
180  position: absolute;
181  top: 100%;
182  left: 50%;
183  margin-left: -8px;
184  width: 0; height: 0;
185  border-top: 8px solid #000000;
186  border-right: 8px solid transparent;
187  border-left: 8px solid transparent;
188}
189:hover.tooltip span.tooltip-content {
190  visibility: visible;
191  opacity: 0.8;
192  bottom: 30px;
193  left: 50%;
194  z-index: 999;
195}
196th, td {
197  vertical-align: top;
198  padding: 2px 8px;
199  border-collapse: collapse;
200  border-right: solid 1px #eee;
201  border-left: solid 1px #eee;
202  text-align: left;
203}
204td pre {
205  display: inline-block;
206}
207td:first-child {
208  border-left: none;
209}
210td:last-child {
211  border-right: none;
212}
213tr:hover {
214  background-color: #f0f0f0;
215}
216)";
217
218const char *EndHeader = "</head>";
219
220const char *BeginCenteredDiv = "<div class='centered'>";
221
222const char *EndCenteredDiv = "</div>";
223
224const char *BeginSourceNameDiv = "<div class='source-name-title'>";
225
226const char *EndSourceNameDiv = "</div>";
227
228const char *BeginCodeTD = "<td class='code'>";
229
230const char *EndCodeTD = "</td>";
231
232const char *BeginPre = "<pre>";
233
234const char *EndPre = "</pre>";
235
236const char *BeginExpansionDiv = "<div class='expansion-view'>";
237
238const char *EndExpansionDiv = "</div>";
239
240const char *BeginTable = "<table>";
241
242const char *EndTable = "</table>";
243
244const char *ProjectTitleTag = "h1";
245
246const char *ReportTitleTag = "h2";
247
248const char *CreatedTimeTag = "h4";
249
250std::string getPathToStyle(StringRef ViewPath) {
251  std::string PathToStyle = "";
252  std::string PathSep = std::string(sys::path::get_separator());
253  unsigned NumSeps = ViewPath.count(PathSep);
254  for (unsigned I = 0, E = NumSeps; I < E; ++I)
255    PathToStyle += ".." + PathSep;
256  return PathToStyle + "style.css";
257}
258
259void emitPrelude(raw_ostream &OS, const CoverageViewOptions &Opts,
260                 const std::string &PathToStyle = "") {
261  OS << "<!doctype html>"
262        "<html>"
263     << BeginHeader;
264
265  // Link to a stylesheet if one is available. Otherwise, use the default style.
266  if (PathToStyle.empty())
267    OS << "<style>" << CSSForCoverage << "</style>";
268  else
269    OS << "<link rel='stylesheet' type='text/css' href='"
270       << escape(PathToStyle, Opts) << "'>";
271
272  OS << EndHeader << "<body>";
273}
274
275void emitEpilog(raw_ostream &OS) {
276  OS << "</body>"
277     << "</html>";
278}
279
280} // anonymous namespace
281
282Expected<CoveragePrinter::OwnedStream>
283CoveragePrinterHTML::createViewFile(StringRef Path, bool InToplevel) {
284  auto OSOrErr = createOutputStream(Path, "html", InToplevel);
285  if (!OSOrErr)
286    return OSOrErr;
287
288  OwnedStream OS = std::move(OSOrErr.get());
289
290  if (!Opts.hasOutputDirectory()) {
291    emitPrelude(*OS.get(), Opts);
292  } else {
293    std::string ViewPath = getOutputPath(Path, "html", InToplevel);
294    emitPrelude(*OS.get(), Opts, getPathToStyle(ViewPath));
295  }
296
297  return std::move(OS);
298}
299
300void CoveragePrinterHTML::closeViewFile(OwnedStream OS) {
301  emitEpilog(*OS.get());
302}
303
304/// Emit column labels for the table in the index.
305static void emitColumnLabelsForIndex(raw_ostream &OS,
306                                     const CoverageViewOptions &Opts) {
307  SmallVector<std::string, 4> Columns;
308  Columns.emplace_back(tag("td", "Filename", "column-entry-bold"));
309  Columns.emplace_back(tag("td", "Function Coverage", "column-entry-bold"));
310  if (Opts.ShowInstantiationSummary)
311    Columns.emplace_back(
312        tag("td", "Instantiation Coverage", "column-entry-bold"));
313  Columns.emplace_back(tag("td", "Line Coverage", "column-entry-bold"));
314  if (Opts.ShowRegionSummary)
315    Columns.emplace_back(tag("td", "Region Coverage", "column-entry-bold"));
316  OS << tag("tr", join(Columns.begin(), Columns.end(), ""));
317}
318
319std::string
320CoveragePrinterHTML::buildLinkToFile(StringRef SF,
321                                     const FileCoverageSummary &FCS) const {
322  SmallString<128> LinkTextStr(sys::path::relative_path(FCS.Name));
323  sys::path::remove_dots(LinkTextStr, /*remove_dot_dots=*/true);
324  sys::path::native(LinkTextStr);
325  std::string LinkText = escape(LinkTextStr, Opts);
326  std::string LinkTarget =
327      escape(getOutputPath(SF, "html", /*InToplevel=*/false), Opts);
328  return a(LinkTarget, LinkText);
329}
330
331/// Render a file coverage summary (\p FCS) in a table row. If \p IsTotals is
332/// false, link the summary to \p SF.
333void CoveragePrinterHTML::emitFileSummary(raw_ostream &OS, StringRef SF,
334                                          const FileCoverageSummary &FCS,
335                                          bool IsTotals) const {
336  SmallVector<std::string, 8> Columns;
337
338  // Format a coverage triple and add the result to the list of columns.
339  auto AddCoverageTripleToColumn = [&Columns](unsigned Hit, unsigned Total,
340                                              float Pctg) {
341    std::string S;
342    {
343      raw_string_ostream RSO{S};
344      if (Total)
345        RSO << format("%*.2f", 7, Pctg) << "% ";
346      else
347        RSO << "- ";
348      RSO << '(' << Hit << '/' << Total << ')';
349    }
350    const char *CellClass = "column-entry-yellow";
351    if (Hit == Total)
352      CellClass = "column-entry-green";
353    else if (Pctg < 80.0)
354      CellClass = "column-entry-red";
355    Columns.emplace_back(tag("td", tag("pre", S), CellClass));
356  };
357
358  // Simplify the display file path, and wrap it in a link if requested.
359  std::string Filename;
360  if (IsTotals) {
361    Filename = std::string(SF);
362  } else {
363    Filename = buildLinkToFile(SF, FCS);
364  }
365
366  Columns.emplace_back(tag("td", tag("pre", Filename)));
367  AddCoverageTripleToColumn(FCS.FunctionCoverage.getExecuted(),
368                            FCS.FunctionCoverage.getNumFunctions(),
369                            FCS.FunctionCoverage.getPercentCovered());
370  if (Opts.ShowInstantiationSummary)
371    AddCoverageTripleToColumn(FCS.InstantiationCoverage.getExecuted(),
372                              FCS.InstantiationCoverage.getNumFunctions(),
373                              FCS.InstantiationCoverage.getPercentCovered());
374  AddCoverageTripleToColumn(FCS.LineCoverage.getCovered(),
375                            FCS.LineCoverage.getNumLines(),
376                            FCS.LineCoverage.getPercentCovered());
377  if (Opts.ShowRegionSummary)
378    AddCoverageTripleToColumn(FCS.RegionCoverage.getCovered(),
379                              FCS.RegionCoverage.getNumRegions(),
380                              FCS.RegionCoverage.getPercentCovered());
381
382  if (IsTotals)
383    OS << tag("tr", join(Columns.begin(), Columns.end(), ""), "light-row-bold");
384  else
385    OS << tag("tr", join(Columns.begin(), Columns.end(), ""), "light-row");
386}
387
388Error CoveragePrinterHTML::createIndexFile(
389    ArrayRef<std::string> SourceFiles, const CoverageMapping &Coverage,
390    const CoverageFiltersMatchAll &Filters) {
391  // Emit the default stylesheet.
392  auto CSSOrErr = createOutputStream("style", "css", /*InToplevel=*/true);
393  if (Error E = CSSOrErr.takeError())
394    return E;
395
396  OwnedStream CSS = std::move(CSSOrErr.get());
397  CSS->operator<<(CSSForCoverage);
398
399  // Emit a file index along with some coverage statistics.
400  auto OSOrErr = createOutputStream("index", "html", /*InToplevel=*/true);
401  if (Error E = OSOrErr.takeError())
402    return E;
403  auto OS = std::move(OSOrErr.get());
404  raw_ostream &OSRef = *OS.get();
405
406  assert(Opts.hasOutputDirectory() && "No output directory for index file");
407  emitPrelude(OSRef, Opts, getPathToStyle(""));
408
409  // Emit some basic information about the coverage report.
410  if (Opts.hasProjectTitle())
411    OSRef << tag(ProjectTitleTag, escape(Opts.ProjectTitle, Opts));
412  OSRef << tag(ReportTitleTag, "Coverage Report");
413  if (Opts.hasCreatedTime())
414    OSRef << tag(CreatedTimeTag, escape(Opts.CreatedTimeStr, Opts));
415
416  // Emit a link to some documentation.
417  OSRef << tag("p", "Click " +
418                        a("http://clang.llvm.org/docs/"
419                          "SourceBasedCodeCoverage.html#interpreting-reports",
420                          "here") +
421                        " for information about interpreting this report.");
422
423  // Emit a table containing links to reports for each file in the covmapping.
424  // Exclude files which don't contain any regions.
425  OSRef << BeginCenteredDiv << BeginTable;
426  emitColumnLabelsForIndex(OSRef, Opts);
427  FileCoverageSummary Totals("TOTALS");
428  auto FileReports = CoverageReport::prepareFileReports(
429      Coverage, Totals, SourceFiles, Opts, Filters);
430  bool EmptyFiles = false;
431  for (unsigned I = 0, E = FileReports.size(); I < E; ++I) {
432    if (FileReports[I].FunctionCoverage.getNumFunctions())
433      emitFileSummary(OSRef, SourceFiles[I], FileReports[I]);
434    else
435      EmptyFiles = true;
436  }
437  emitFileSummary(OSRef, "Totals", Totals, /*IsTotals=*/true);
438  OSRef << EndTable << EndCenteredDiv;
439
440  // Emit links to files which don't contain any functions. These are normally
441  // not very useful, but could be relevant for code which abuses the
442  // preprocessor.
443  if (EmptyFiles && Filters.empty()) {
444    OSRef << tag("p", "Files which contain no functions. (These "
445                      "files contain code pulled into other files "
446                      "by the preprocessor.)\n");
447    OSRef << BeginCenteredDiv << BeginTable;
448    for (unsigned I = 0, E = FileReports.size(); I < E; ++I)
449      if (!FileReports[I].FunctionCoverage.getNumFunctions()) {
450        std::string Link = buildLinkToFile(SourceFiles[I], FileReports[I]);
451        OSRef << tag("tr", tag("td", tag("pre", Link)), "light-row") << '\n';
452      }
453    OSRef << EndTable << EndCenteredDiv;
454  }
455
456  OSRef << tag("h5", escape(Opts.getLLVMVersionString(), Opts));
457  emitEpilog(OSRef);
458
459  return Error::success();
460}
461
462void SourceCoverageViewHTML::renderViewHeader(raw_ostream &OS) {
463  OS << BeginCenteredDiv << BeginTable;
464}
465
466void SourceCoverageViewHTML::renderViewFooter(raw_ostream &OS) {
467  OS << EndTable << EndCenteredDiv;
468}
469
470void SourceCoverageViewHTML::renderSourceName(raw_ostream &OS, bool WholeFile) {
471  OS << BeginSourceNameDiv << tag("pre", escape(getSourceName(), getOptions()))
472     << EndSourceNameDiv;
473}
474
475void SourceCoverageViewHTML::renderLinePrefix(raw_ostream &OS, unsigned) {
476  OS << "<tr>";
477}
478
479void SourceCoverageViewHTML::renderLineSuffix(raw_ostream &OS, unsigned) {
480  // If this view has sub-views, renderLine() cannot close the view's cell.
481  // Take care of it here, after all sub-views have been rendered.
482  if (hasSubViews())
483    OS << EndCodeTD;
484  OS << "</tr>";
485}
486
487void SourceCoverageViewHTML::renderViewDivider(raw_ostream &, unsigned) {
488  // The table-based output makes view dividers unnecessary.
489}
490
491void SourceCoverageViewHTML::renderLine(raw_ostream &OS, LineRef L,
492                                        const LineCoverageStats &LCS,
493                                        unsigned ExpansionCol, unsigned) {
494  StringRef Line = L.Line;
495  unsigned LineNo = L.LineNo;
496
497  // Steps for handling text-escaping, highlighting, and tooltip creation:
498  //
499  // 1. Split the line into N+1 snippets, where N = |Segments|. The first
500  //    snippet starts from Col=1 and ends at the start of the first segment.
501  //    The last snippet starts at the last mapped column in the line and ends
502  //    at the end of the line. Both are required but may be empty.
503
504  SmallVector<std::string, 8> Snippets;
505  CoverageSegmentArray Segments = LCS.getLineSegments();
506
507  unsigned LCol = 1;
508  auto Snip = [&](unsigned Start, unsigned Len) {
509    Snippets.push_back(std::string(Line.substr(Start, Len)));
510    LCol += Len;
511  };
512
513  Snip(LCol - 1, Segments.empty() ? 0 : (Segments.front()->Col - 1));
514
515  for (unsigned I = 1, E = Segments.size(); I < E; ++I)
516    Snip(LCol - 1, Segments[I]->Col - LCol);
517
518  // |Line| + 1 is needed to avoid underflow when, e.g |Line| = 0 and LCol = 1.
519  Snip(LCol - 1, Line.size() + 1 - LCol);
520
521  // 2. Escape all of the snippets.
522
523  for (unsigned I = 0, E = Snippets.size(); I < E; ++I)
524    Snippets[I] = escape(Snippets[I], getOptions());
525
526  // 3. Use \p WrappedSegment to set the highlight for snippet 0. Use segment
527  //    1 to set the highlight for snippet 2, segment 2 to set the highlight for
528  //    snippet 3, and so on.
529
530  Optional<StringRef> Color;
531  SmallVector<std::pair<unsigned, unsigned>, 2> HighlightedRanges;
532  auto Highlight = [&](const std::string &Snippet, unsigned LC, unsigned RC) {
533    if (getOptions().Debug)
534      HighlightedRanges.emplace_back(LC, RC);
535    return tag("span", Snippet, std::string(Color.getValue()));
536  };
537
538  auto CheckIfUncovered = [&](const CoverageSegment *S) {
539    return S && (!S->IsGapRegion || (Color && *Color == "red")) &&
540           S->HasCount && S->Count == 0;
541  };
542
543  if (CheckIfUncovered(LCS.getWrappedSegment())) {
544    Color = "red";
545    if (!Snippets[0].empty())
546      Snippets[0] = Highlight(Snippets[0], 1, 1 + Snippets[0].size());
547  }
548
549  for (unsigned I = 0, E = Segments.size(); I < E; ++I) {
550    const auto *CurSeg = Segments[I];
551    if (CheckIfUncovered(CurSeg))
552      Color = "red";
553    else if (CurSeg->Col == ExpansionCol)
554      Color = "cyan";
555    else
556      Color = None;
557
558    if (Color.hasValue())
559      Snippets[I + 1] = Highlight(Snippets[I + 1], CurSeg->Col,
560                                  CurSeg->Col + Snippets[I + 1].size());
561  }
562
563  if (Color.hasValue() && Segments.empty())
564    Snippets.back() = Highlight(Snippets.back(), 1, 1 + Snippets.back().size());
565
566  if (getOptions().Debug) {
567    for (const auto &Range : HighlightedRanges) {
568      errs() << "Highlighted line " << LineNo << ", " << Range.first << " -> ";
569      if (Range.second == 0)
570        errs() << "?";
571      else
572        errs() << Range.second;
573      errs() << "\n";
574    }
575  }
576
577  // 4. Snippets[1:N+1] correspond to \p Segments[0:N]: use these to generate
578  //    sub-line region count tooltips if needed.
579
580  if (shouldRenderRegionMarkers(LCS)) {
581    // Just consider the segments which start *and* end on this line.
582    for (unsigned I = 0, E = Segments.size() - 1; I < E; ++I) {
583      const auto *CurSeg = Segments[I];
584      if (!CurSeg->IsRegionEntry)
585        continue;
586      if (CurSeg->Count == LCS.getExecutionCount())
587        continue;
588
589      Snippets[I + 1] =
590          tag("div", Snippets[I + 1] + tag("span", formatCount(CurSeg->Count),
591                                           "tooltip-content"),
592              "tooltip");
593
594      if (getOptions().Debug)
595        errs() << "Marker at " << CurSeg->Line << ":" << CurSeg->Col << " = "
596               << formatCount(CurSeg->Count) << "\n";
597    }
598  }
599
600  OS << BeginCodeTD;
601  OS << BeginPre;
602  for (const auto &Snippet : Snippets)
603    OS << Snippet;
604  OS << EndPre;
605
606  // If there are no sub-views left to attach to this cell, end the cell.
607  // Otherwise, end it after the sub-views are rendered (renderLineSuffix()).
608  if (!hasSubViews())
609    OS << EndCodeTD;
610}
611
612void SourceCoverageViewHTML::renderLineCoverageColumn(
613    raw_ostream &OS, const LineCoverageStats &Line) {
614  std::string Count = "";
615  if (Line.isMapped())
616    Count = tag("pre", formatCount(Line.getExecutionCount()));
617  std::string CoverageClass =
618      (Line.getExecutionCount() > 0) ? "covered-line" : "uncovered-line";
619  OS << tag("td", Count, CoverageClass);
620}
621
622void SourceCoverageViewHTML::renderLineNumberColumn(raw_ostream &OS,
623                                                    unsigned LineNo) {
624  std::string LineNoStr = utostr(uint64_t(LineNo));
625  std::string TargetName = "L" + LineNoStr;
626  OS << tag("td", a("#" + TargetName, tag("pre", LineNoStr), TargetName),
627            "line-number");
628}
629
630void SourceCoverageViewHTML::renderRegionMarkers(raw_ostream &,
631                                                 const LineCoverageStats &Line,
632                                                 unsigned) {
633  // Region markers are rendered in-line using tooltips.
634}
635
636void SourceCoverageViewHTML::renderExpansionSite(raw_ostream &OS, LineRef L,
637                                                 const LineCoverageStats &LCS,
638                                                 unsigned ExpansionCol,
639                                                 unsigned ViewDepth) {
640  // Render the line containing the expansion site. No extra formatting needed.
641  renderLine(OS, L, LCS, ExpansionCol, ViewDepth);
642}
643
644void SourceCoverageViewHTML::renderExpansionView(raw_ostream &OS,
645                                                 ExpansionView &ESV,
646                                                 unsigned ViewDepth) {
647  OS << BeginExpansionDiv;
648  ESV.View->print(OS, /*WholeFile=*/false, /*ShowSourceName=*/false,
649                  /*ShowTitle=*/false, ViewDepth + 1);
650  OS << EndExpansionDiv;
651}
652
653void SourceCoverageViewHTML::renderInstantiationView(raw_ostream &OS,
654                                                     InstantiationView &ISV,
655                                                     unsigned ViewDepth) {
656  OS << BeginExpansionDiv;
657  if (!ISV.View)
658    OS << BeginSourceNameDiv
659       << tag("pre",
660              escape("Unexecuted instantiation: " + ISV.FunctionName.str(),
661                     getOptions()))
662       << EndSourceNameDiv;
663  else
664    ISV.View->print(OS, /*WholeFile=*/false, /*ShowSourceName=*/true,
665                    /*ShowTitle=*/false, ViewDepth);
666  OS << EndExpansionDiv;
667}
668
669void SourceCoverageViewHTML::renderTitle(raw_ostream &OS, StringRef Title) {
670  if (getOptions().hasProjectTitle())
671    OS << tag(ProjectTitleTag, escape(getOptions().ProjectTitle, getOptions()));
672  OS << tag(ReportTitleTag, escape(Title, getOptions()));
673  if (getOptions().hasCreatedTime())
674    OS << tag(CreatedTimeTag,
675              escape(getOptions().CreatedTimeStr, getOptions()));
676}
677
678void SourceCoverageViewHTML::renderTableHeader(raw_ostream &OS,
679                                               unsigned FirstUncoveredLineNo,
680                                               unsigned ViewDepth) {
681  std::string SourceLabel;
682  if (FirstUncoveredLineNo == 0) {
683    SourceLabel = tag("td", tag("pre", "Source"));
684  } else {
685    std::string LinkTarget = "#L" + utostr(uint64_t(FirstUncoveredLineNo));
686    SourceLabel =
687        tag("td", tag("pre", "Source (" +
688                                 a(LinkTarget, "jump to first uncovered line") +
689                                 ")"));
690  }
691
692  renderLinePrefix(OS, ViewDepth);
693  OS << tag("td", tag("pre", "Line")) << tag("td", tag("pre", "Count"))
694     << SourceLabel;
695  renderLineSuffix(OS, ViewDepth);
696}
697