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c636d7a9a3
This commit makes llvm-cov avoid showing 0% (0/0) coverage for things like file function coverage, etc. in reports and HTML output. This can happen for files like headers that have macros but no functions. This commit makes llvm-cov report - (0/0) instead. rdar://29246480 Differential Revision: https://reviews.llvm.org/D26615 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@287539 91177308-0d34-0410-b5e6-96231b3b80d8
356 lines
13 KiB
C++
356 lines
13 KiB
C++
//===- CoverageReport.cpp - Code coverage report -------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This class implements rendering of a code coverage report.
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//
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//===----------------------------------------------------------------------===//
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#include "CoverageReport.h"
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#include "RenderingSupport.h"
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/Support/FileSystem.h"
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#include "llvm/Support/Format.h"
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#include "llvm/Support/Path.h"
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#include <numeric>
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using namespace llvm;
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namespace {
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/// \brief Helper struct which prints trimmed and aligned columns.
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struct Column {
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enum TrimKind { NoTrim, WidthTrim, RightTrim };
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enum AlignmentKind { LeftAlignment, RightAlignment };
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StringRef Str;
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unsigned Width;
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TrimKind Trim;
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AlignmentKind Alignment;
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Column(StringRef Str, unsigned Width)
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: Str(Str), Width(Width), Trim(WidthTrim), Alignment(LeftAlignment) {}
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Column &set(TrimKind Value) {
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Trim = Value;
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return *this;
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}
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Column &set(AlignmentKind Value) {
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Alignment = Value;
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return *this;
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}
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void render(raw_ostream &OS) const {
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if (Str.size() <= Width) {
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if (Alignment == RightAlignment) {
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OS.indent(Width - Str.size());
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OS << Str;
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return;
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}
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OS << Str;
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OS.indent(Width - Str.size());
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return;
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}
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switch (Trim) {
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case NoTrim:
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OS << Str;
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break;
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case WidthTrim:
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OS << Str.substr(0, Width);
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break;
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case RightTrim:
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OS << Str.substr(0, Width - 3) << "...";
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break;
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}
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}
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};
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raw_ostream &operator<<(raw_ostream &OS, const Column &Value) {
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Value.render(OS);
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return OS;
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}
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Column column(StringRef Str, unsigned Width) { return Column(Str, Width); }
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template <typename T>
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Column column(StringRef Str, unsigned Width, const T &Value) {
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return Column(Str, Width).set(Value);
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}
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// Specify the default column widths.
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size_t FileReportColumns[] = {25, 12, 18, 10, 12, 18, 10,
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16, 16, 10, 12, 18, 10};
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size_t FunctionReportColumns[] = {25, 10, 8, 8, 10, 8, 8};
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/// \brief Adjust column widths to fit long file paths and function names.
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void adjustColumnWidths(ArrayRef<StringRef> Files,
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ArrayRef<StringRef> Functions) {
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for (StringRef Filename : Files)
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FileReportColumns[0] = std::max(FileReportColumns[0], Filename.size());
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for (StringRef Funcname : Functions)
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FunctionReportColumns[0] =
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std::max(FunctionReportColumns[0], Funcname.size());
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}
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/// \brief Prints a horizontal divider long enough to cover the given column
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/// widths.
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void renderDivider(ArrayRef<size_t> ColumnWidths, raw_ostream &OS) {
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size_t Length = std::accumulate(ColumnWidths.begin(), ColumnWidths.end(), 0);
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for (size_t I = 0; I < Length; ++I)
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OS << '-';
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}
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/// \brief Return the color which correponds to the coverage percentage of a
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/// certain metric.
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template <typename T>
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raw_ostream::Colors determineCoveragePercentageColor(const T &Info) {
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if (Info.isFullyCovered())
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return raw_ostream::GREEN;
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return Info.getPercentCovered() >= 80.0 ? raw_ostream::YELLOW
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: raw_ostream::RED;
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}
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/// \brief Determine the length of the longest common prefix of the strings in
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/// \p Strings.
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unsigned getLongestCommonPrefixLen(ArrayRef<std::string> Strings) {
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unsigned LCP = Strings[0].size();
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for (unsigned I = 1, E = Strings.size(); LCP > 0 && I < E; ++I) {
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unsigned Cursor;
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StringRef S = Strings[I];
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for (Cursor = 0; Cursor < LCP && Cursor < S.size(); ++Cursor)
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if (Strings[0][Cursor] != S[Cursor])
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break;
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LCP = std::min(LCP, Cursor);
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}
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return LCP;
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}
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} // end anonymous namespace
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namespace llvm {
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void CoverageReport::render(const FileCoverageSummary &File,
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raw_ostream &OS) const {
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auto FileCoverageColor =
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determineCoveragePercentageColor(File.RegionCoverage);
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auto FuncCoverageColor =
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determineCoveragePercentageColor(File.FunctionCoverage);
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auto InstantiationCoverageColor =
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determineCoveragePercentageColor(File.InstantiationCoverage);
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auto LineCoverageColor = determineCoveragePercentageColor(File.LineCoverage);
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SmallString<256> FileName = File.Name;
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sys::path::remove_dots(FileName, /*remove_dot_dots=*/true);
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sys::path::native(FileName);
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OS << column(FileName, FileReportColumns[0], Column::NoTrim)
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<< format("%*u", FileReportColumns[1],
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(unsigned)File.RegionCoverage.NumRegions);
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Options.colored_ostream(OS, FileCoverageColor) << format(
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"%*u", FileReportColumns[2], (unsigned)File.RegionCoverage.NotCovered);
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if (File.RegionCoverage.NumRegions)
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Options.colored_ostream(OS, FileCoverageColor)
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<< format("%*.2f", FileReportColumns[3] - 1,
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File.RegionCoverage.getPercentCovered())
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<< '%';
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else
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OS << column("-", FileReportColumns[3], Column::RightAlignment);
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OS << format("%*u", FileReportColumns[4],
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(unsigned)File.FunctionCoverage.NumFunctions);
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OS << format("%*u", FileReportColumns[5],
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(unsigned)(File.FunctionCoverage.NumFunctions -
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File.FunctionCoverage.Executed));
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if (File.FunctionCoverage.NumFunctions)
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Options.colored_ostream(OS, FuncCoverageColor)
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<< format("%*.2f", FileReportColumns[6] - 1,
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File.FunctionCoverage.getPercentCovered())
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<< '%';
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else
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OS << column("-", FileReportColumns[6], Column::RightAlignment);
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OS << format("%*u", FileReportColumns[7],
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(unsigned)File.InstantiationCoverage.NumFunctions);
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OS << format("%*u", FileReportColumns[8],
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(unsigned)(File.InstantiationCoverage.NumFunctions -
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File.InstantiationCoverage.Executed));
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if (File.InstantiationCoverage.NumFunctions)
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Options.colored_ostream(OS, InstantiationCoverageColor)
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<< format("%*.2f", FileReportColumns[9] - 1,
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File.InstantiationCoverage.getPercentCovered())
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<< '%';
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else
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OS << column("-", FileReportColumns[9], Column::RightAlignment);
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OS << format("%*u", FileReportColumns[10],
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(unsigned)File.LineCoverage.NumLines);
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Options.colored_ostream(OS, LineCoverageColor) << format(
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"%*u", FileReportColumns[11], (unsigned)File.LineCoverage.NotCovered);
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if (File.LineCoverage.NumLines)
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Options.colored_ostream(OS, LineCoverageColor)
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<< format("%*.2f", FileReportColumns[12] - 1,
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File.LineCoverage.getPercentCovered())
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<< '%';
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else
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OS << column("-", FileReportColumns[12], Column::RightAlignment);
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OS << "\n";
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}
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void CoverageReport::render(const FunctionCoverageSummary &Function,
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raw_ostream &OS) const {
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auto FuncCoverageColor =
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determineCoveragePercentageColor(Function.RegionCoverage);
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auto LineCoverageColor =
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determineCoveragePercentageColor(Function.LineCoverage);
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OS << column(Function.Name, FunctionReportColumns[0], Column::RightTrim)
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<< format("%*u", FunctionReportColumns[1],
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(unsigned)Function.RegionCoverage.NumRegions);
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Options.colored_ostream(OS, FuncCoverageColor)
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<< format("%*u", FunctionReportColumns[2],
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(unsigned)Function.RegionCoverage.NotCovered);
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Options.colored_ostream(
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OS, determineCoveragePercentageColor(Function.RegionCoverage))
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<< format("%*.2f", FunctionReportColumns[3] - 1,
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Function.RegionCoverage.getPercentCovered())
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<< '%';
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OS << format("%*u", FunctionReportColumns[4],
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(unsigned)Function.LineCoverage.NumLines);
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Options.colored_ostream(OS, LineCoverageColor)
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<< format("%*u", FunctionReportColumns[5],
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(unsigned)Function.LineCoverage.NotCovered);
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Options.colored_ostream(
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OS, determineCoveragePercentageColor(Function.LineCoverage))
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<< format("%*.2f", FunctionReportColumns[6] - 1,
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Function.LineCoverage.getPercentCovered())
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<< '%';
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OS << "\n";
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}
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void CoverageReport::renderFunctionReports(ArrayRef<std::string> Files,
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raw_ostream &OS) {
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bool isFirst = true;
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for (StringRef Filename : Files) {
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auto Functions = Coverage.getCoveredFunctions(Filename);
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if (isFirst)
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isFirst = false;
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else
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OS << "\n";
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std::vector<StringRef> Funcnames;
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for (const auto &F : Functions)
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Funcnames.emplace_back(F.Name);
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adjustColumnWidths({}, Funcnames);
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OS << "File '" << Filename << "':\n";
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OS << column("Name", FunctionReportColumns[0])
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<< column("Regions", FunctionReportColumns[1], Column::RightAlignment)
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<< column("Miss", FunctionReportColumns[2], Column::RightAlignment)
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<< column("Cover", FunctionReportColumns[3], Column::RightAlignment)
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<< column("Lines", FunctionReportColumns[4], Column::RightAlignment)
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<< column("Miss", FunctionReportColumns[5], Column::RightAlignment)
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<< column("Cover", FunctionReportColumns[6], Column::RightAlignment);
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OS << "\n";
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renderDivider(FunctionReportColumns, OS);
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OS << "\n";
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FunctionCoverageSummary Totals("TOTAL");
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for (const auto &F : Functions) {
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FunctionCoverageSummary Function = FunctionCoverageSummary::get(F);
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++Totals.ExecutionCount;
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Totals.RegionCoverage += Function.RegionCoverage;
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Totals.LineCoverage += Function.LineCoverage;
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render(Function, OS);
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}
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if (Totals.ExecutionCount) {
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renderDivider(FunctionReportColumns, OS);
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OS << "\n";
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render(Totals, OS);
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}
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}
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}
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std::vector<FileCoverageSummary>
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CoverageReport::prepareFileReports(const coverage::CoverageMapping &Coverage,
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FileCoverageSummary &Totals,
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ArrayRef<std::string> Files) {
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std::vector<FileCoverageSummary> FileReports;
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unsigned LCP = 0;
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if (Files.size() > 1)
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LCP = getLongestCommonPrefixLen(Files);
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for (StringRef Filename : Files) {
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FileCoverageSummary Summary(Filename.drop_front(LCP));
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// Map source locations to aggregate function coverage summaries.
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DenseMap<std::pair<unsigned, unsigned>, FunctionCoverageSummary> Summaries;
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for (const auto &F : Coverage.getCoveredFunctions(Filename)) {
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FunctionCoverageSummary Function = FunctionCoverageSummary::get(F);
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auto StartLoc = F.CountedRegions[0].startLoc();
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auto UniquedSummary = Summaries.insert({StartLoc, Function});
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if (!UniquedSummary.second)
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UniquedSummary.first->second.update(Function);
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Summary.addInstantiation(Function);
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Totals.addInstantiation(Function);
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}
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for (const auto &UniquedSummary : Summaries) {
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const FunctionCoverageSummary &FCS = UniquedSummary.second;
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Summary.addFunction(FCS);
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Totals.addFunction(FCS);
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}
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FileReports.push_back(Summary);
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}
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return FileReports;
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}
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void CoverageReport::renderFileReports(raw_ostream &OS) const {
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std::vector<std::string> UniqueSourceFiles;
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for (StringRef SF : Coverage.getUniqueSourceFiles())
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UniqueSourceFiles.emplace_back(SF.str());
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renderFileReports(OS, UniqueSourceFiles);
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}
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void CoverageReport::renderFileReports(raw_ostream &OS,
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ArrayRef<std::string> Files) const {
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FileCoverageSummary Totals("TOTAL");
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auto FileReports = prepareFileReports(Coverage, Totals, Files);
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std::vector<StringRef> Filenames;
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for (const FileCoverageSummary &FCS : FileReports)
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Filenames.emplace_back(FCS.Name);
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adjustColumnWidths(Filenames, {});
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OS << column("Filename", FileReportColumns[0])
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<< column("Regions", FileReportColumns[1], Column::RightAlignment)
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<< column("Missed Regions", FileReportColumns[2], Column::RightAlignment)
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<< column("Cover", FileReportColumns[3], Column::RightAlignment)
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<< column("Functions", FileReportColumns[4], Column::RightAlignment)
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<< column("Missed Functions", FileReportColumns[5], Column::RightAlignment)
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<< column("Executed", FileReportColumns[6], Column::RightAlignment)
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<< column("Instantiations", FileReportColumns[7], Column::RightAlignment)
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<< column("Missed Insts.", FileReportColumns[8], Column::RightAlignment)
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<< column("Executed", FileReportColumns[9], Column::RightAlignment)
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<< column("Lines", FileReportColumns[10], Column::RightAlignment)
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<< column("Missed Lines", FileReportColumns[11], Column::RightAlignment)
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<< column("Cover", FileReportColumns[12], Column::RightAlignment) << "\n";
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renderDivider(FileReportColumns, OS);
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OS << "\n";
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for (const FileCoverageSummary &FCS : FileReports)
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render(FCS, OS);
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renderDivider(FileReportColumns, OS);
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OS << "\n";
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render(Totals, OS);
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}
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} // end namespace llvm
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