forked from OSchip/llvm-project
256 lines
9.3 KiB
C++
256 lines
9.3 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/Support/FileSystem.h"
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#include "llvm/Support/Format.h"
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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, LeftTrim, 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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};
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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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}
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void Column::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 LeftTrim:
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OS << "..." << Str.substr(Str.size() - Width + 3);
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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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static Column column(StringRef Str, unsigned Width) {
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return Column(Str, Width);
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}
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template <typename T>
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static 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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static size_t FileReportColumns[] = {25, 12, 18, 10, 12, 18, 10, 12, 18, 10};
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static 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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static void adjustColumnWidths(coverage::CoverageMapping *CM) {
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for (StringRef Filename : CM->getUniqueSourceFiles()) {
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FileReportColumns[0] = std::max(FileReportColumns[0], Filename.size());
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for (const auto &F : CM->getCoveredFunctions(Filename)) {
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FunctionReportColumns[0] =
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std::max(FunctionReportColumns[0], F.Name.size());
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}
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}
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}
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/// \brief Prints a horizontal divider which spans across the given columns.
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template <typename T, size_t N>
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static void renderDivider(T (&Columns)[N], raw_ostream &OS) {
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unsigned Length = 0;
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for (unsigned I = 0; I < N; ++I)
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Length += Columns[I];
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for (unsigned 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
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/// percentage of a certain metric.
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template <typename T>
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static 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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void CoverageReport::render(const FileCoverageSummary &File, raw_ostream &OS) {
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OS << column(File.Name, 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, File.RegionCoverage.isFullyCovered()
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? raw_ostream::GREEN
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: raw_ostream::RED)
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<< format("%*u", FileReportColumns[2], (unsigned)File.RegionCoverage.NotCovered);
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Options.colored_ostream(OS,
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determineCoveragePercentageColor(File.RegionCoverage))
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<< format("%*.2f", FileReportColumns[3] - 1,
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File.RegionCoverage.getPercentCovered()) << '%';
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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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Options.colored_ostream(
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OS, determineCoveragePercentageColor(File.FunctionCoverage))
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<< format("%*.2f", FileReportColumns[6] - 1,
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File.FunctionCoverage.getPercentCovered()) << '%';
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OS << format("%*u", FileReportColumns[7],
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(unsigned)File.LineCoverage.NumLines);
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Options.colored_ostream(OS, File.LineCoverage.isFullyCovered()
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? raw_ostream::GREEN
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: raw_ostream::RED)
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<< format("%*u", FileReportColumns[8],
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(unsigned)File.LineCoverage.NotCovered);
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Options.colored_ostream(OS,
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determineCoveragePercentageColor(File.LineCoverage))
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<< format("%*.2f", FileReportColumns[9] - 1,
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File.LineCoverage.getPercentCovered()) << '%';
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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) {
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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, Function.RegionCoverage.isFullyCovered()
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? raw_ostream::GREEN
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: raw_ostream::RED)
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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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OS << format("%*u", FunctionReportColumns[4],
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(unsigned)Function.LineCoverage.NumLines);
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Options.colored_ostream(OS, Function.LineCoverage.isFullyCovered()
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? raw_ostream::GREEN
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: raw_ostream::RED)
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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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OS << "\n";
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}
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void CoverageReport::renderFunctionReports(ArrayRef<StringRef> Files,
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raw_ostream &OS) {
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adjustColumnWidths(Coverage.get());
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bool isFirst = true;
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for (StringRef Filename : Files) {
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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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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 : Coverage->getCoveredFunctions(Filename)) {
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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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void CoverageReport::renderFileReports(raw_ostream &OS) {
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adjustColumnWidths(Coverage.get());
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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],
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Column::RightAlignment)
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<< column("Executed", FileReportColumns[6], Column::RightAlignment)
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<< column("Lines", FileReportColumns[7], Column::RightAlignment)
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<< column("Missed Lines", FileReportColumns[8], Column::RightAlignment)
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<< column("Cover", FileReportColumns[9], Column::RightAlignment)
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<< "\n";
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renderDivider(FileReportColumns, OS);
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OS << "\n";
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FileCoverageSummary Totals("TOTAL");
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for (StringRef Filename : Coverage->getUniqueSourceFiles()) {
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FileCoverageSummary Summary(Filename);
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for (const auto &F : Coverage->getCoveredFunctions(Filename)) {
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FunctionCoverageSummary Function = FunctionCoverageSummary::get(F);
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Summary.addFunction(Function);
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Totals.addFunction(Function);
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}
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render(Summary, OS);
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}
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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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