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340a374fe7
Instead of stripping the longest common prefix off of the filenames in a report, strip out the longest chain of redundant path components. This fixes the case in PR31982, where there are two files with the same prefix, and stripping out the LCP makes things less intelligible. llvm-svn: 296029
389 lines
14 KiB
C++
389 lines
14 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 Get the number of redundant path components in each path in \p Paths.
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unsigned getNumRedundantPathComponents(ArrayRef<std::string> Paths) {
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// To start, set the number of redundant path components to the maximum
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// possible value.
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SmallVector<StringRef, 8> FirstPathComponents{sys::path::begin(Paths[0]),
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sys::path::end(Paths[0])};
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unsigned NumRedundant = FirstPathComponents.size();
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for (unsigned I = 1, E = Paths.size(); NumRedundant > 0 && I < E; ++I) {
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StringRef Path = Paths[I];
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for (const auto &Component :
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enumerate(make_range(sys::path::begin(Path), sys::path::end(Path)))) {
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// Do not increase the number of redundant components: that would remove
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// useful parts of already-visited paths.
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if (Component.Index >= NumRedundant)
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break;
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// Lower the number of redundant components when there's a mismatch
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// between the first path, and the path under consideration.
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if (FirstPathComponents[Component.Index] != Component.Value) {
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NumRedundant = Component.Index;
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break;
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}
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}
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}
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return NumRedundant;
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}
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/// \brief Determine the length of the longest redundant prefix of the paths in
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/// \p Paths.
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unsigned getRedundantPrefixLen(ArrayRef<std::string> Paths) {
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// If there's at most one path, no path components are redundant.
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if (Paths.size() <= 1)
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return 0;
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unsigned PrefixLen = 0;
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unsigned NumRedundant = getNumRedundantPathComponents(Paths);
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auto Component = sys::path::begin(Paths[0]);
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for (unsigned I = 0; I < NumRedundant; ++I) {
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auto LastComponent = Component;
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++Component;
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PrefixLen += Component - LastComponent;
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}
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return PrefixLen;
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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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const DemangleCache &DC,
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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(DC.demangle(Function.Name), FunctionReportColumns[0],
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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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const DemangleCache &DC,
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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(DC.demangle(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, DC, 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, DC, 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 = getRedundantPrefixLen(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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