aboutsummaryrefslogtreecommitdiffstats
path: root/tools/llvm-cov/SourceCoverageView.h
blob: d92a7486d9d347b025378438cccebc33552b306d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
//===- SourceCoverageView.h - Code coverage view for source code ----------===//
//
//                     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 for code coverage of source code.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_COV_SOURCECOVERAGEVIEW_H
#define LLVM_COV_SOURCECOVERAGEVIEW_H

#include "CoverageViewOptions.h"
#include "llvm/ProfileData/CoverageMapping.h"
#include "llvm/Support/MemoryBuffer.h"
#include <vector>

namespace llvm {

class SourceCoverageView;

/// \brief A view that represents a macro or include expansion
struct ExpansionView {
  coverage::CounterMappingRegion Region;
  std::unique_ptr<SourceCoverageView> View;

  ExpansionView(const coverage::CounterMappingRegion &Region,
                std::unique_ptr<SourceCoverageView> View)
      : Region(Region), View(std::move(View)) {}
  ExpansionView(ExpansionView &&RHS)
      : Region(std::move(RHS.Region)), View(std::move(RHS.View)) {}
  ExpansionView &operator=(ExpansionView &&RHS) {
    Region = std::move(RHS.Region);
    View = std::move(RHS.View);
    return *this;
  }

  unsigned getLine() const { return Region.LineStart; }
  unsigned getStartCol() const { return Region.ColumnStart; }
  unsigned getEndCol() const { return Region.ColumnEnd; }

  friend bool operator<(const ExpansionView &LHS, const ExpansionView &RHS) {
    return LHS.Region.startLoc() < RHS.Region.startLoc();
  }
};

/// \brief A view that represents a function instantiation
struct InstantiationView {
  StringRef FunctionName;
  unsigned Line;
  std::unique_ptr<SourceCoverageView> View;

  InstantiationView(StringRef FunctionName, unsigned Line,
                    std::unique_ptr<SourceCoverageView> View)
      : FunctionName(FunctionName), Line(Line), View(std::move(View)) {}
  InstantiationView(InstantiationView &&RHS)
      : FunctionName(std::move(RHS.FunctionName)), Line(std::move(RHS.Line)),
        View(std::move(RHS.View)) {}
  InstantiationView &operator=(InstantiationView &&RHS) {
    FunctionName = std::move(RHS.FunctionName);
    Line = std::move(RHS.Line);
    View = std::move(RHS.View);
    return *this;
  }

  friend bool operator<(const InstantiationView &LHS,
                        const InstantiationView &RHS) {
    return LHS.Line < RHS.Line;
  }
};

/// \brief A code coverage view of a specific source file.
/// It can have embedded coverage views.
class SourceCoverageView {
private:
  /// \brief Coverage information for a single line.
  struct LineCoverageInfo {
    uint64_t ExecutionCount;
    unsigned RegionCount;
    bool Mapped;

    LineCoverageInfo() : ExecutionCount(0), RegionCount(0), Mapped(false) {}

    bool isMapped() const { return Mapped; }

    bool hasMultipleRegions() const { return RegionCount > 1; }

    void addRegionStartCount(uint64_t Count) {
      Mapped = true;
      ExecutionCount = Count;
      ++RegionCount;
    }

    void addRegionCount(uint64_t Count) {
      Mapped = true;
      if (!RegionCount)
        ExecutionCount = Count;
    }
  };

  const MemoryBuffer &File;
  const CoverageViewOptions &Options;
  coverage::CoverageData CoverageInfo;
  std::vector<ExpansionView> ExpansionSubViews;
  std::vector<InstantiationView> InstantiationSubViews;

  /// \brief Render a source line with highlighting.
  void renderLine(raw_ostream &OS, StringRef Line, int64_t LineNumber,
                  const coverage::CoverageSegment *WrappedSegment,
                  ArrayRef<const coverage::CoverageSegment *> Segments,
                  unsigned ExpansionCol);

  void renderIndent(raw_ostream &OS, unsigned Level);

  void renderViewDivider(unsigned Offset, unsigned Length, raw_ostream &OS);

  /// \brief Render the line's execution count column.
  void renderLineCoverageColumn(raw_ostream &OS, const LineCoverageInfo &Line);

  /// \brief Render the line number column.
  void renderLineNumberColumn(raw_ostream &OS, unsigned LineNo);

  /// \brief Render all the region's execution counts on a line.
  void
  renderRegionMarkers(raw_ostream &OS,
                      ArrayRef<const coverage::CoverageSegment *> Segments);

  static const unsigned LineCoverageColumnWidth = 7;
  static const unsigned LineNumberColumnWidth = 5;

public:
  SourceCoverageView(const MemoryBuffer &File,
                     const CoverageViewOptions &Options,
                     coverage::CoverageData &&CoverageInfo)
      : File(File), Options(Options), CoverageInfo(std::move(CoverageInfo)) {}

  const CoverageViewOptions &getOptions() const { return Options; }

  /// \brief Add an expansion subview to this view.
  void addExpansion(const coverage::CounterMappingRegion &Region,
                    std::unique_ptr<SourceCoverageView> View) {
    ExpansionSubViews.emplace_back(Region, std::move(View));
  }

  /// \brief Add a function instantiation subview to this view.
  void addInstantiation(StringRef FunctionName, unsigned Line,
                        std::unique_ptr<SourceCoverageView> View) {
    InstantiationSubViews.emplace_back(FunctionName, Line, std::move(View));
  }

  /// \brief Print the code coverage information for a specific
  /// portion of a source file to the output stream.
  void render(raw_ostream &OS, bool WholeFile, unsigned IndentLevel = 0);
};

} // namespace llvm

#endif // LLVM_COV_SOURCECOVERAGEVIEW_H