forked from OSchip/llvm-project
125 lines
4.6 KiB
C++
125 lines
4.6 KiB
C++
//===- CoverageExporterLcov.cpp - Code coverage export --------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements export of code coverage data to lcov trace file format.
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//
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//===----------------------------------------------------------------------===//
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//===----------------------------------------------------------------------===//
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//
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// The trace file code coverage export follows the following format (see also
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// https://linux.die.net/man/1/geninfo). Each quoted string appears on its own
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// line; the indentation shown here is only for documentation purposes.
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//
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// - for each source file:
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// - "SF:<absolute path to source file>"
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// - for each function:
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// - "FN:<line number of function start>,<function name>"
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// - for each function:
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// - "FNDA:<execution count>,<function name>"
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// - "FNF:<number of functions found>"
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// - "FNH:<number of functions hit>"
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// - for each instrumented line:
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// - "DA:<line number>,<execution count>[,<checksum>]
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// - "LH:<number of lines with non-zero execution count>"
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// - "LF:<nubmer of instrumented lines>"
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// - "end_of_record"
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//
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// If the user is exporting summary information only, then the FN, FNDA, and DA
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// lines will not be present.
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//
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//===----------------------------------------------------------------------===//
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#include "CoverageExporterLcov.h"
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#include "CoverageReport.h"
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using namespace llvm;
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namespace {
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void renderFunctionSummary(raw_ostream &OS,
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const FileCoverageSummary &Summary) {
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OS << "FNF:" << Summary.FunctionCoverage.getNumFunctions() << '\n'
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<< "FNH:" << Summary.FunctionCoverage.getExecuted() << '\n';
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}
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void renderFunctions(
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raw_ostream &OS,
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const iterator_range<coverage::FunctionRecordIterator> &Functions) {
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for (const auto &F : Functions) {
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auto StartLine = F.CountedRegions.front().LineStart;
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OS << "FN:" << StartLine << ',' << F.Name << '\n';
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}
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for (const auto &F : Functions)
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OS << "FNDA:" << F.ExecutionCount << ',' << F.Name << '\n';
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}
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void renderLineExecutionCounts(raw_ostream &OS,
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const coverage::CoverageData &FileCoverage) {
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coverage::LineCoverageIterator LCI{FileCoverage, 1};
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coverage::LineCoverageIterator LCIEnd = LCI.getEnd();
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for (; LCI != LCIEnd; ++LCI) {
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const coverage::LineCoverageStats &LCS = *LCI;
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if (LCS.isMapped()) {
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OS << "DA:" << LCS.getLine() << ',' << LCS.getExecutionCount() << '\n';
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}
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}
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}
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void renderLineSummary(raw_ostream &OS, const FileCoverageSummary &Summary) {
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OS << "LF:" << Summary.LineCoverage.getNumLines() << '\n'
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<< "LH:" << Summary.LineCoverage.getCovered() << '\n';
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}
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void renderFile(raw_ostream &OS, const coverage::CoverageMapping &Coverage,
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const std::string &Filename,
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const FileCoverageSummary &FileReport, bool ExportSummaryOnly) {
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OS << "SF:" << Filename << '\n';
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if (!ExportSummaryOnly) {
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renderFunctions(OS, Coverage.getCoveredFunctions(Filename));
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}
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renderFunctionSummary(OS, FileReport);
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if (!ExportSummaryOnly) {
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// Calculate and render detailed coverage information for given file.
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auto FileCoverage = Coverage.getCoverageForFile(Filename);
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renderLineExecutionCounts(OS, FileCoverage);
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}
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renderLineSummary(OS, FileReport);
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OS << "end_of_record\n";
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}
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void renderFiles(raw_ostream &OS, const coverage::CoverageMapping &Coverage,
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ArrayRef<std::string> SourceFiles,
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ArrayRef<FileCoverageSummary> FileReports,
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bool ExportSummaryOnly) {
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for (unsigned I = 0, E = SourceFiles.size(); I < E; ++I)
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renderFile(OS, Coverage, SourceFiles[I], FileReports[I], ExportSummaryOnly);
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}
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} // end anonymous namespace
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void CoverageExporterLcov::renderRoot(const CoverageFilters &IgnoreFilters) {
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std::vector<std::string> SourceFiles;
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for (StringRef SF : Coverage.getUniqueSourceFiles()) {
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if (!IgnoreFilters.matchesFilename(SF))
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SourceFiles.emplace_back(SF);
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}
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renderRoot(SourceFiles);
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}
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void CoverageExporterLcov::renderRoot(ArrayRef<std::string> SourceFiles) {
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FileCoverageSummary Totals = FileCoverageSummary("Totals");
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auto FileReports = CoverageReport::prepareFileReports(Coverage, Totals,
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SourceFiles, Options);
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renderFiles(OS, Coverage, SourceFiles, FileReports,
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Options.ExportSummaryOnly);
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}
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