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annotate tools/llvm-cov/SourceCoverageView.h @ 83:60c9769439b8 LLVM3.7

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LLVM 3.7
author Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
date Wed, 18 Feb 2015 14:55:36 +0900
parents 54457678186b
children afa8332a0e37
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1 //===- SourceCoverageView.h - Code coverage view for source code ----------===//
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2 //
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3 // The LLVM Compiler Infrastructure
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4 //
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5 // This file is distributed under the University of Illinois Open Source
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6 // License. See LICENSE.TXT for details.
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7 //
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8 //===----------------------------------------------------------------------===//
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9 //
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10 // This class implements rendering for code coverage of source code.
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11 //
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12 //===----------------------------------------------------------------------===//
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13
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14 #ifndef LLVM_COV_SOURCECOVERAGEVIEW_H
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15 #define LLVM_COV_SOURCECOVERAGEVIEW_H
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16
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17 #include "CoverageViewOptions.h"
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18 #include "llvm/ProfileData/CoverageMapping.h"
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19 #include "llvm/Support/MemoryBuffer.h"
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20 #include <vector>
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21
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22 namespace llvm {
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23
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24 class SourceCoverageView;
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25
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26 /// \brief A view that represents a macro or include expansion
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27 struct ExpansionView {
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28 coverage::CounterMappingRegion Region;
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29 std::unique_ptr<SourceCoverageView> View;
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30
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31 ExpansionView(const coverage::CounterMappingRegion &Region,
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32 std::unique_ptr<SourceCoverageView> View)
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33 : Region(Region), View(std::move(View)) {}
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34 ExpansionView(ExpansionView &&RHS)
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35 : Region(std::move(RHS.Region)), View(std::move(RHS.View)) {}
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36 ExpansionView &operator=(ExpansionView &&RHS) {
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37 Region = std::move(RHS.Region);
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38 View = std::move(RHS.View);
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39 return *this;
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40 }
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41
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42 unsigned getLine() const { return Region.LineStart; }
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43 unsigned getStartCol() const { return Region.ColumnStart; }
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44 unsigned getEndCol() const { return Region.ColumnEnd; }
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45
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46 friend bool operator<(const ExpansionView &LHS, const ExpansionView &RHS) {
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47 return LHS.Region.startLoc() < RHS.Region.startLoc();
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48 }
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49 };
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50
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51 /// \brief A view that represents a function instantiation
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52 struct InstantiationView {
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53 StringRef FunctionName;
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54 unsigned Line;
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55 std::unique_ptr<SourceCoverageView> View;
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56
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57 InstantiationView(StringRef FunctionName, unsigned Line,
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58 std::unique_ptr<SourceCoverageView> View)
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59 : FunctionName(FunctionName), Line(Line), View(std::move(View)) {}
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60 InstantiationView(InstantiationView &&RHS)
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61 : FunctionName(std::move(RHS.FunctionName)), Line(std::move(RHS.Line)),
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62 View(std::move(RHS.View)) {}
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63 InstantiationView &operator=(InstantiationView &&RHS) {
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64 FunctionName = std::move(RHS.FunctionName);
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65 Line = std::move(RHS.Line);
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66 View = std::move(RHS.View);
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67 return *this;
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68 }
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69
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70 friend bool operator<(const InstantiationView &LHS,
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71 const InstantiationView &RHS) {
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72 return LHS.Line < RHS.Line;
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73 }
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74 };
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75
77
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76 /// \brief A code coverage view of a specific source file.
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77 /// It can have embedded coverage views.
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78 class SourceCoverageView {
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79 private:
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80 /// \brief Coverage information for a single line.
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81 struct LineCoverageInfo {
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82 uint64_t ExecutionCount;
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83 unsigned RegionCount;
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84 bool Mapped;
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85
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86 LineCoverageInfo() : ExecutionCount(0), RegionCount(0), Mapped(false) {}
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87
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88 bool isMapped() const { return Mapped; }
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89
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90 bool hasMultipleRegions() const { return RegionCount > 1; }
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91
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92 void addRegionStartCount(uint64_t Count) {
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93 Mapped = true;
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94 ExecutionCount = Count;
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95 ++RegionCount;
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96 }
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97
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98 void addRegionCount(uint64_t Count) {
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99 Mapped = true;
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100 if (!RegionCount)
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101 ExecutionCount = Count;
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102 }
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103 };
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104
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105 const MemoryBuffer &File;
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106 const CoverageViewOptions &Options;
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107 coverage::CoverageData CoverageInfo;
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108 std::vector<ExpansionView> ExpansionSubViews;
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109 std::vector<InstantiationView> InstantiationSubViews;
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110
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111 /// \brief Render a source line with highlighting.
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112 void renderLine(raw_ostream &OS, StringRef Line, int64_t LineNumber,
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113 const coverage::CoverageSegment *WrappedSegment,
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114 ArrayRef<const coverage::CoverageSegment *> Segments,
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115 unsigned ExpansionCol);
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116
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117 void renderIndent(raw_ostream &OS, unsigned Level);
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118
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119 void renderViewDivider(unsigned Offset, unsigned Length, raw_ostream &OS);
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120
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121 /// \brief Render the line's execution count column.
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122 void renderLineCoverageColumn(raw_ostream &OS, const LineCoverageInfo &Line);
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123
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124 /// \brief Render the line number column.
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125 void renderLineNumberColumn(raw_ostream &OS, unsigned LineNo);
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126
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127 /// \brief Render all the region's execution counts on a line.
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128 void
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129 renderRegionMarkers(raw_ostream &OS,
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130 ArrayRef<const coverage::CoverageSegment *> Segments);
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131
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132 static const unsigned LineCoverageColumnWidth = 7;
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133 static const unsigned LineNumberColumnWidth = 5;
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134
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135 public:
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136 SourceCoverageView(const MemoryBuffer &File,
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137 const CoverageViewOptions &Options,
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138 coverage::CoverageData &&CoverageInfo)
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139 : File(File), Options(Options), CoverageInfo(std::move(CoverageInfo)) {}
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140
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141 const CoverageViewOptions &getOptions() const { return Options; }
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142
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143 /// \brief Add an expansion subview to this view.
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144 void addExpansion(const coverage::CounterMappingRegion &Region,
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145 std::unique_ptr<SourceCoverageView> View) {
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146 ExpansionSubViews.emplace_back(Region, std::move(View));
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147 }
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148
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149 /// \brief Add a function instantiation subview to this view.
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150 void addInstantiation(StringRef FunctionName, unsigned Line,
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151 std::unique_ptr<SourceCoverageView> View) {
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152 InstantiationSubViews.emplace_back(FunctionName, Line, std::move(View));
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153 }
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154
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155 /// \brief Print the code coverage information for a specific
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156 /// portion of a source file to the output stream.
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157 void render(raw_ostream &OS, bool WholeFile, unsigned IndentLevel = 0);
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158 };
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159
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160 } // namespace llvm
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161
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162 #endif // LLVM_COV_SOURCECOVERAGEVIEW_H