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290 lines
10 KiB
C++
290 lines
10 KiB
C++
//===- SourceCoverageView.h - Code coverage view for source code ----------===//
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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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/// \file This class implements rendering for code coverage of source code.
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///
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_COV_SOURCECOVERAGEVIEW_H
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#define LLVM_COV_SOURCECOVERAGEVIEW_H
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#include "CoverageViewOptions.h"
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#include "llvm/ProfileData/Coverage/CoverageMapping.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include <vector>
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namespace llvm {
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class SourceCoverageView;
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/// \brief A view that represents a macro or include expansion.
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struct ExpansionView {
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coverage::CounterMappingRegion Region;
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std::unique_ptr<SourceCoverageView> View;
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ExpansionView(const coverage::CounterMappingRegion &Region,
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std::unique_ptr<SourceCoverageView> View)
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: Region(Region), View(std::move(View)) {}
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ExpansionView(ExpansionView &&RHS)
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: Region(std::move(RHS.Region)), View(std::move(RHS.View)) {}
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ExpansionView &operator=(ExpansionView &&RHS) {
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Region = std::move(RHS.Region);
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View = std::move(RHS.View);
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return *this;
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}
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unsigned getLine() const { return Region.LineStart; }
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unsigned getStartCol() const { return Region.ColumnStart; }
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unsigned getEndCol() const { return Region.ColumnEnd; }
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friend bool operator<(const ExpansionView &LHS, const ExpansionView &RHS) {
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return LHS.Region.startLoc() < RHS.Region.startLoc();
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}
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};
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/// \brief A view that represents a function instantiation.
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struct InstantiationView {
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StringRef FunctionName;
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unsigned Line;
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std::unique_ptr<SourceCoverageView> View;
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InstantiationView(StringRef FunctionName, unsigned Line,
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std::unique_ptr<SourceCoverageView> View)
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: FunctionName(FunctionName), Line(Line), View(std::move(View)) {}
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friend bool operator<(const InstantiationView &LHS,
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const InstantiationView &RHS) {
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return LHS.Line < RHS.Line;
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}
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};
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/// \brief Coverage statistics for a single line.
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struct LineCoverageStats {
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uint64_t ExecutionCount;
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unsigned RegionCount;
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bool Mapped;
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LineCoverageStats() : ExecutionCount(0), RegionCount(0), Mapped(false) {}
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bool isMapped() const { return Mapped; }
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bool hasMultipleRegions() const { return RegionCount > 1; }
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void addRegionStartCount(uint64_t Count) {
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// The max of all region starts is the most interesting value.
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addRegionCount(RegionCount ? std::max(ExecutionCount, Count) : Count);
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++RegionCount;
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}
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void addRegionCount(uint64_t Count) {
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Mapped = true;
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ExecutionCount = Count;
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}
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};
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/// \brief A file manager that handles format-aware file creation.
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class CoveragePrinter {
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public:
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struct StreamDestructor {
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void operator()(raw_ostream *OS) const;
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};
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using OwnedStream = std::unique_ptr<raw_ostream, StreamDestructor>;
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protected:
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const CoverageViewOptions &Opts;
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CoveragePrinter(const CoverageViewOptions &Opts) : Opts(Opts) {}
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/// \brief Return `OutputDir/ToplevelDir/Path.Extension`. If \p InToplevel is
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/// false, skip the ToplevelDir component. If \p Relative is false, skip the
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/// OutputDir component.
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std::string getOutputPath(StringRef Path, StringRef Extension,
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bool InToplevel, bool Relative = true) const;
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/// \brief If directory output is enabled, create a file in that directory
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/// at the path given by getOutputPath(). Otherwise, return stdout.
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Expected<OwnedStream> createOutputStream(StringRef Path, StringRef Extension,
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bool InToplevel) const;
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/// \brief Return the sub-directory name for file coverage reports.
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static StringRef getCoverageDir() { return "coverage"; }
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public:
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static std::unique_ptr<CoveragePrinter>
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create(const CoverageViewOptions &Opts);
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virtual ~CoveragePrinter() {}
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/// @name File Creation Interface
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/// @{
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/// \brief Create a file to print a coverage view into.
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virtual Expected<OwnedStream> createViewFile(StringRef Path,
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bool InToplevel) = 0;
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/// \brief Close a file which has been used to print a coverage view.
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virtual void closeViewFile(OwnedStream OS) = 0;
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/// \brief Create an index which lists reports for the given source files.
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virtual Error createIndexFile(ArrayRef<std::string> SourceFiles,
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const coverage::CoverageMapping &Coverage) = 0;
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/// @}
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};
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/// \brief A code coverage view of a source file or function.
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///
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/// A source coverage view and its nested sub-views form a file-oriented
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/// representation of code coverage data. This view can be printed out by a
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/// renderer which implements the Rendering Interface.
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class SourceCoverageView {
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/// A function or file name.
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StringRef SourceName;
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/// A memory buffer backing the source on display.
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const MemoryBuffer &File;
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/// Various options to guide the coverage renderer.
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const CoverageViewOptions &Options;
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/// Complete coverage information about the source on display.
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coverage::CoverageData CoverageInfo;
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/// A container for all expansions (e.g macros) in the source on display.
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std::vector<ExpansionView> ExpansionSubViews;
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/// A container for all instantiations (e.g template functions) in the source
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/// on display.
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std::vector<InstantiationView> InstantiationSubViews;
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/// Get the first uncovered line number for the source file.
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unsigned getFirstUncoveredLineNo();
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protected:
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struct LineRef {
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StringRef Line;
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int64_t LineNo;
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LineRef(StringRef Line, int64_t LineNo) : Line(Line), LineNo(LineNo) {}
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};
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using CoverageSegmentArray = ArrayRef<const coverage::CoverageSegment *>;
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/// @name Rendering Interface
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/// @{
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/// \brief Render a header for the view.
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virtual void renderViewHeader(raw_ostream &OS) = 0;
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/// \brief Render a footer for the view.
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virtual void renderViewFooter(raw_ostream &OS) = 0;
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/// \brief Render the source name for the view.
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virtual void renderSourceName(raw_ostream &OS, bool WholeFile) = 0;
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/// \brief Render the line prefix at the given \p ViewDepth.
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virtual void renderLinePrefix(raw_ostream &OS, unsigned ViewDepth) = 0;
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/// \brief Render the line suffix at the given \p ViewDepth.
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virtual void renderLineSuffix(raw_ostream &OS, unsigned ViewDepth) = 0;
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/// \brief Render a view divider at the given \p ViewDepth.
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virtual void renderViewDivider(raw_ostream &OS, unsigned ViewDepth) = 0;
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/// \brief Render a source line with highlighting.
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virtual void renderLine(raw_ostream &OS, LineRef L,
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const coverage::CoverageSegment *WrappedSegment,
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CoverageSegmentArray Segments, unsigned ExpansionCol,
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unsigned ViewDepth) = 0;
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/// \brief Render the line's execution count column.
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virtual void renderLineCoverageColumn(raw_ostream &OS,
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const LineCoverageStats &Line) = 0;
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/// \brief Render the line number column.
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virtual void renderLineNumberColumn(raw_ostream &OS, unsigned LineNo) = 0;
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/// \brief Render all the region's execution counts on a line.
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virtual void renderRegionMarkers(raw_ostream &OS,
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CoverageSegmentArray Segments,
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unsigned ViewDepth) = 0;
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/// \brief Render the site of an expansion.
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virtual void
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renderExpansionSite(raw_ostream &OS, LineRef L,
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const coverage::CoverageSegment *WrappedSegment,
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CoverageSegmentArray Segments, unsigned ExpansionCol,
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unsigned ViewDepth) = 0;
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/// \brief Render an expansion view and any nested views.
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virtual void renderExpansionView(raw_ostream &OS, ExpansionView &ESV,
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unsigned ViewDepth) = 0;
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/// \brief Render an instantiation view and any nested views.
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virtual void renderInstantiationView(raw_ostream &OS, InstantiationView &ISV,
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unsigned ViewDepth) = 0;
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/// \brief Render \p Title, a project title if one is available, and the
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/// created time.
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virtual void renderTitle(raw_ostream &OS, StringRef CellText) = 0;
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/// \brief Render the table header for a given source file.
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virtual void renderTableHeader(raw_ostream &OS, unsigned FirstUncoveredLineNo,
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unsigned IndentLevel) = 0;
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/// @}
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/// \brief Format a count using engineering notation with 3 significant
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/// digits.
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static std::string formatCount(uint64_t N);
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/// \brief Check if region marker output is expected for a line.
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bool shouldRenderRegionMarkers(bool LineHasMultipleRegions) const;
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/// \brief Check if there are any sub-views attached to this view.
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bool hasSubViews() const;
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SourceCoverageView(StringRef SourceName, const MemoryBuffer &File,
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const CoverageViewOptions &Options,
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coverage::CoverageData &&CoverageInfo)
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: SourceName(SourceName), File(File), Options(Options),
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CoverageInfo(std::move(CoverageInfo)) {}
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public:
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static std::unique_ptr<SourceCoverageView>
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create(StringRef SourceName, const MemoryBuffer &File,
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const CoverageViewOptions &Options,
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coverage::CoverageData &&CoverageInfo);
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virtual ~SourceCoverageView() {}
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/// \brief Return the source name formatted for the host OS.
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std::string getSourceName() const;
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const CoverageViewOptions &getOptions() const { return Options; }
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/// \brief Add an expansion subview to this view.
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void addExpansion(const coverage::CounterMappingRegion &Region,
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std::unique_ptr<SourceCoverageView> View);
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/// \brief Add a function instantiation subview to this view.
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void addInstantiation(StringRef FunctionName, unsigned Line,
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std::unique_ptr<SourceCoverageView> View);
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/// \brief Print the code coverage information for a specific portion of a
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/// source file to the output stream.
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void print(raw_ostream &OS, bool WholeFile, bool ShowSourceName,
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unsigned ViewDepth = 0);
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};
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} // namespace llvm
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#endif // LLVM_COV_SOURCECOVERAGEVIEW_H
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