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//===- CoverageReport.cpp - Code coverage report -------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This class implements rendering of a code coverage report.
//
//===----------------------------------------------------------------------===//
#include "CoverageReport.h"
#include "RenderingSupport.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Format.h"
using namespace llvm;
namespace {
/// \brief Helper struct which prints trimmed and aligned columns.
struct Column {
enum TrimKind { NoTrim, LeftTrim, RightTrim };
enum AlignmentKind { LeftAlignment, RightAlignment };
StringRef Str;
unsigned Width;
TrimKind Trim;
AlignmentKind Alignment;
Column(StringRef Str, unsigned Width)
: Str(Str), Width(Width), Trim(NoTrim), Alignment(LeftAlignment) {}
Column &set(TrimKind Value) {
Trim = Value;
return *this;
}
Column &set(AlignmentKind Value) {
Alignment = Value;
return *this;
}
void render(raw_ostream &OS) const;
};
raw_ostream &operator<<(raw_ostream &OS, const Column &Value) {
Value.render(OS);
return OS;
}
}
void Column::render(raw_ostream &OS) const {
if (Str.size() <= Width) {
if (Alignment == RightAlignment) {
OS.indent(Width - Str.size());
OS << Str;
return;
}
OS << Str;
OS.indent(Width - Str.size());
return;
}
switch (Trim) {
case NoTrim:
OS << Str.substr(0, Width);
break;
case LeftTrim:
OS << "..." << Str.substr(Str.size() - Width + 3);
break;
case RightTrim:
OS << Str.substr(0, Width - 3) << "...";
break;
}
}
static Column column(StringRef Str, unsigned Width) {
return Column(Str, Width);
}
template <typename T>
static Column column(StringRef Str, unsigned Width, const T &Value) {
return Column(Str, Width).set(Value);
}
static const unsigned FileReportColumns[] = {25, 10, 8, 8, 10, 10};
static const unsigned FunctionReportColumns[] = {25, 10, 8, 8, 10, 8, 8};
/// \brief Prints a horizontal divider which spans across the given columns.
template <typename T, size_t N>
static void renderDivider(T (&Columns)[N], raw_ostream &OS) {
unsigned Length = 0;
for (unsigned I = 0; I < N; ++I)
Length += Columns[I];
for (unsigned I = 0; I < Length; ++I)
OS << '-';
}
/// \brief Return the color which correponds to the coverage
/// percentage of a certain metric.
template <typename T>
static raw_ostream::Colors determineCoveragePercentageColor(const T &Info) {
if (Info.isFullyCovered())
return raw_ostream::GREEN;
return Info.getPercentCovered() >= 80.0 ? raw_ostream::YELLOW
: raw_ostream::RED;
}
void CoverageReport::render(const FileCoverageSummary &File, raw_ostream &OS) {
OS << column(File.Name, FileReportColumns[0], Column::LeftTrim)
<< format("%*u", FileReportColumns[1], (unsigned)File.RegionCoverage.NumRegions);
Options.colored_ostream(OS, File.RegionCoverage.isFullyCovered()
? raw_ostream::GREEN
: raw_ostream::RED)
<< format("%*u", FileReportColumns[2], (unsigned)File.RegionCoverage.NotCovered);
Options.colored_ostream(OS,
determineCoveragePercentageColor(File.RegionCoverage))
<< format("%*.2f", FileReportColumns[3] - 1,
File.RegionCoverage.getPercentCovered()) << '%';
OS << format("%*u", FileReportColumns[4],
(unsigned)File.FunctionCoverage.NumFunctions);
Options.colored_ostream(
OS, determineCoveragePercentageColor(File.FunctionCoverage))
<< format("%*.2f", FileReportColumns[5] - 1,
File.FunctionCoverage.getPercentCovered()) << '%';
OS << "\n";
}
void CoverageReport::render(const FunctionCoverageSummary &Function,
raw_ostream &OS) {
OS << column(Function.Name, FunctionReportColumns[0], Column::RightTrim)
<< format("%*u", FunctionReportColumns[1],
(unsigned)Function.RegionCoverage.NumRegions);
Options.colored_ostream(OS, Function.RegionCoverage.isFullyCovered()
? raw_ostream::GREEN
: raw_ostream::RED)
<< format("%*u", FunctionReportColumns[2],
(unsigned)Function.RegionCoverage.NotCovered);
Options.colored_ostream(
OS, determineCoveragePercentageColor(Function.RegionCoverage))
<< format("%*.2f", FunctionReportColumns[3] - 1,
Function.RegionCoverage.getPercentCovered()) << '%';
OS << format("%*u", FunctionReportColumns[4],
(unsigned)Function.LineCoverage.NumLines);
Options.colored_ostream(OS, Function.LineCoverage.isFullyCovered()
? raw_ostream::GREEN
: raw_ostream::RED)
<< format("%*u", FunctionReportColumns[5],
(unsigned)Function.LineCoverage.NotCovered);
Options.colored_ostream(
OS, determineCoveragePercentageColor(Function.LineCoverage))
<< format("%*.2f", FunctionReportColumns[6] - 1,
Function.LineCoverage.getPercentCovered()) << '%';
OS << "\n";
}
void CoverageReport::renderFunctionReports(ArrayRef<std::string> Files,
raw_ostream &OS) {
bool isFirst = true;
for (StringRef Filename : Files) {
if (isFirst)
isFirst = false;
else
OS << "\n";
OS << "File '" << Filename << "':\n";
OS << column("Name", FunctionReportColumns[0])
<< column("Regions", FunctionReportColumns[1], Column::RightAlignment)
<< column("Miss", FunctionReportColumns[2], Column::RightAlignment)
<< column("Cover", FunctionReportColumns[3], Column::RightAlignment)
<< column("Lines", FunctionReportColumns[4], Column::RightAlignment)
<< column("Miss", FunctionReportColumns[5], Column::RightAlignment)
<< column("Cover", FunctionReportColumns[6], Column::RightAlignment);
OS << "\n";
renderDivider(FunctionReportColumns, OS);
OS << "\n";
FunctionCoverageSummary Totals("TOTAL");
for (const auto &F : Coverage->getCoveredFunctions(Filename)) {
FunctionCoverageSummary Function = FunctionCoverageSummary::get(F);
++Totals.ExecutionCount;
Totals.RegionCoverage += Function.RegionCoverage;
Totals.LineCoverage += Function.LineCoverage;
render(Function, OS);
}
if (Totals.ExecutionCount) {
renderDivider(FunctionReportColumns, OS);
OS << "\n";
render(Totals, OS);
}
}
}
void CoverageReport::renderFileReports(raw_ostream &OS) {
OS << column("Filename", FileReportColumns[0])
<< column("Regions", FileReportColumns[1], Column::RightAlignment)
<< column("Miss", FileReportColumns[2], Column::RightAlignment)
<< column("Cover", FileReportColumns[3], Column::RightAlignment)
<< column("Functions", FileReportColumns[4], Column::RightAlignment)
<< column("Executed", FileReportColumns[5], Column::RightAlignment)
<< "\n";
renderDivider(FileReportColumns, OS);
OS << "\n";
FileCoverageSummary Totals("TOTAL");
for (StringRef Filename : Coverage->getUniqueSourceFiles()) {
FileCoverageSummary Summary(Filename);
for (const auto &F : Coverage->getCoveredFunctions(Filename)) {
FunctionCoverageSummary Function = FunctionCoverageSummary::get(F);
Summary.addFunction(Function);
Totals.addFunction(Function);
}
render(Summary, OS);
}
renderDivider(FileReportColumns, OS);
OS << "\n";
render(Totals, OS);
}
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