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annotate tools/llvm-cov/SourceCoverageView.cpp @ 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
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 //===- SourceCoverageView.cpp - 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 #include "SourceCoverageView.h"
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15 #include "llvm/ADT/Optional.h"
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16 #include "llvm/ADT/SmallString.h"
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17 #include "llvm/Support/LineIterator.h"
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18
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19 using namespace llvm;
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20
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21 void SourceCoverageView::renderLine(
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22 raw_ostream &OS, StringRef Line, int64_t LineNumber,
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23 const coverage::CoverageSegment *WrappedSegment,
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24 ArrayRef<const coverage::CoverageSegment *> Segments,
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25 unsigned ExpansionCol) {
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26 Optional<raw_ostream::Colors> Highlight;
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27 SmallVector<std::pair<unsigned, unsigned>, 2> HighlightedRanges;
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28
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29 // The first segment overlaps from a previous line, so we treat it specially.
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30 if (WrappedSegment && WrappedSegment->HasCount && WrappedSegment->Count == 0)
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31 Highlight = raw_ostream::RED;
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32
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33 // Output each segment of the line, possibly highlighted.
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34 unsigned Col = 1;
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35 for (const auto *S : Segments) {
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36 unsigned End = std::min(S->Col, static_cast<unsigned>(Line.size()) + 1);
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37 colored_ostream(OS, Highlight ? *Highlight : raw_ostream::SAVEDCOLOR,
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38 Options.Colors && Highlight, /*Bold=*/false, /*BG=*/true)
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39 << Line.substr(Col - 1, End - Col);
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40 if (Options.Debug && Highlight)
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41 HighlightedRanges.push_back(std::make_pair(Col, End));
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42 Col = End;
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43 if (Col == ExpansionCol)
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44 Highlight = raw_ostream::CYAN;
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45 else if (S->HasCount && S->Count == 0)
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46 Highlight = raw_ostream::RED;
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47 else
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48 Highlight = None;
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49 }
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50
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51 // Show the rest of the line
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52 colored_ostream(OS, Highlight ? *Highlight : raw_ostream::SAVEDCOLOR,
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53 Options.Colors && Highlight, /*Bold=*/false, /*BG=*/true)
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54 << Line.substr(Col - 1, Line.size() - Col + 1);
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55 OS << "\n";
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56
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57 if (Options.Debug) {
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58 for (const auto &Range : HighlightedRanges)
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59 errs() << "Highlighted line " << LineNumber << ", " << Range.first
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60 << " -> " << Range.second << "\n";
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61 if (Highlight)
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62 errs() << "Highlighted line " << LineNumber << ", " << Col << " -> ?\n";
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63 }
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64 }
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65
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66 void SourceCoverageView::renderIndent(raw_ostream &OS, unsigned Level) {
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67 for (unsigned I = 0; I < Level; ++I)
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68 OS << " |";
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69 }
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70
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71 void SourceCoverageView::renderViewDivider(unsigned Level, unsigned Length,
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72 raw_ostream &OS) {
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73 assert(Level != 0 && "Cannot render divider at top level");
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74 renderIndent(OS, Level - 1);
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75 OS.indent(2);
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76 for (unsigned I = 0; I < Length; ++I)
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77 OS << "-";
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78 }
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79
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80 void
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81 SourceCoverageView::renderLineCoverageColumn(raw_ostream &OS,
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82 const LineCoverageInfo &Line) {
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83 if (!Line.isMapped()) {
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84 OS.indent(LineCoverageColumnWidth) << '|';
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85 return;
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86 }
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87 SmallString<32> Buffer;
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88 raw_svector_ostream BufferOS(Buffer);
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89 BufferOS << Line.ExecutionCount;
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90 auto Str = BufferOS.str();
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91 // Trim
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92 Str = Str.substr(0, std::min(Str.size(), (size_t)LineCoverageColumnWidth));
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93 // Align to the right
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94 OS.indent(LineCoverageColumnWidth - Str.size());
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95 colored_ostream(OS, raw_ostream::MAGENTA,
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96 Line.hasMultipleRegions() && Options.Colors)
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97 << Str;
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98 OS << '|';
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99 }
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100
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101 void SourceCoverageView::renderLineNumberColumn(raw_ostream &OS,
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102 unsigned LineNo) {
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103 SmallString<32> Buffer;
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104 raw_svector_ostream BufferOS(Buffer);
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105 BufferOS << LineNo;
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106 auto Str = BufferOS.str();
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107 // Trim and align to the right
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108 Str = Str.substr(0, std::min(Str.size(), (size_t)LineNumberColumnWidth));
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109 OS.indent(LineNumberColumnWidth - Str.size()) << Str << '|';
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110 }
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111
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112 void SourceCoverageView::renderRegionMarkers(
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113 raw_ostream &OS, ArrayRef<const coverage::CoverageSegment *> Segments) {
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114 SmallString<32> Buffer;
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115 raw_svector_ostream BufferOS(Buffer);
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116
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117 unsigned PrevColumn = 1;
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118 for (const auto *S : Segments) {
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119 if (!S->IsRegionEntry)
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120 continue;
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121 // Skip to the new region
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122 if (S->Col > PrevColumn)
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123 OS.indent(S->Col - PrevColumn);
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124 PrevColumn = S->Col + 1;
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125 BufferOS << S->Count;
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126 StringRef Str = BufferOS.str();
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127 // Trim the execution count
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128 Str = Str.substr(0, std::min(Str.size(), (size_t)7));
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129 PrevColumn += Str.size();
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130 OS << '^' << Str;
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131 Buffer.clear();
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132 }
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133 OS << "\n";
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134
83
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135 if (Options.Debug)
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136 for (const auto *S : Segments)
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137 errs() << "Marker at " << S->Line << ":" << S->Col << " = " << S->Count
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138 << (S->IsRegionEntry ? "\n" : " (pop)\n");
77
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139 }
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140
83
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diff changeset
141 void SourceCoverageView::render(raw_ostream &OS, bool WholeFile,
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142 unsigned IndentLevel) {
77
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143 // The width of the leading columns
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144 unsigned CombinedColumnWidth =
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145 (Options.ShowLineStats ? LineCoverageColumnWidth + 1 : 0) +
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146 (Options.ShowLineNumbers ? LineNumberColumnWidth + 1 : 0);
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147 // The width of the line that is used to divide between the view and the
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148 // subviews.
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149 unsigned DividerWidth = CombinedColumnWidth + 4;
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150
83
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151 // We need the expansions and instantiations sorted so we can go through them
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152 // while we iterate lines.
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153 std::sort(ExpansionSubViews.begin(), ExpansionSubViews.end());
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154 std::sort(InstantiationSubViews.begin(), InstantiationSubViews.end());
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155 auto NextESV = ExpansionSubViews.begin();
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156 auto EndESV = ExpansionSubViews.end();
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157 auto NextISV = InstantiationSubViews.begin();
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158 auto EndISV = InstantiationSubViews.end();
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159
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160 // Get the coverage information for the file.
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161 auto NextSegment = CoverageInfo.begin();
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162 auto EndSegment = CoverageInfo.end();
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163
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164 unsigned FirstLine = NextSegment != EndSegment ? NextSegment->Line : 0;
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165 const coverage::CoverageSegment *WrappedSegment = nullptr;
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166 SmallVector<const coverage::CoverageSegment *, 8> LineSegments;
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167 for (line_iterator LI(File, /*SkipBlanks=*/false); !LI.is_at_eof(); ++LI) {
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168 // If we aren't rendering the whole file, we need to filter out the prologue
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169 // and epilogue.
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170 if (!WholeFile) {
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171 if (NextSegment == EndSegment)
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172 break;
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173 else if (LI.line_number() < FirstLine)
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174 continue;
77
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175 }
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176
83
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177 // Collect the coverage information relevant to this line.
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178 if (LineSegments.size())
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179 WrappedSegment = LineSegments.back();
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180 LineSegments.clear();
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181 while (NextSegment != EndSegment && NextSegment->Line == LI.line_number())
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182 LineSegments.push_back(&*NextSegment++);
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183
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184 // Calculate a count to be for the line as a whole.
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185 LineCoverageInfo LineCount;
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186 if (WrappedSegment && WrappedSegment->HasCount)
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187 LineCount.addRegionCount(WrappedSegment->Count);
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188 for (const auto *S : LineSegments)
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189 if (S->HasCount && S->IsRegionEntry)
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190 LineCount.addRegionStartCount(S->Count);
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191
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192 // Render the line prefix.
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193 renderIndent(OS, IndentLevel);
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194 if (Options.ShowLineStats)
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195 renderLineCoverageColumn(OS, LineCount);
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196 if (Options.ShowLineNumbers)
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diff changeset
197 renderLineNumberColumn(OS, LI.line_number());
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198
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199 // If there are expansion subviews, we want to highlight the first one.
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200 unsigned ExpansionColumn = 0;
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201 if (NextESV != EndESV && NextESV->getLine() == LI.line_number() &&
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diff changeset
202 Options.Colors)
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203 ExpansionColumn = NextESV->getStartCol();
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diff changeset
204
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205 // Display the source code for the current line.
83
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diff changeset
206 renderLine(OS, *LI, LI.line_number(), WrappedSegment, LineSegments,
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diff changeset
207 ExpansionColumn);
77
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diff changeset
208
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209 // Show the region markers.
83
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diff changeset
210 if (Options.ShowRegionMarkers && (!Options.ShowLineStatsOrRegionMarkers ||
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diff changeset
211 LineCount.hasMultipleRegions()) &&
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diff changeset
212 !LineSegments.empty()) {
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diff changeset
213 renderIndent(OS, IndentLevel);
77
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diff changeset
214 OS.indent(CombinedColumnWidth);
83
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diff changeset
215 renderRegionMarkers(OS, LineSegments);
77
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216 }
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diff changeset
217
83
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diff changeset
218 // Show the expansions and instantiations for this line.
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diff changeset
219 unsigned NestedIndent = IndentLevel + 1;
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220 bool RenderedSubView = false;
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diff changeset
221 for (; NextESV != EndESV && NextESV->getLine() == LI.line_number();
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diff changeset
222 ++NextESV) {
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diff changeset
223 renderViewDivider(NestedIndent, DividerWidth, OS);
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diff changeset
224 OS << "\n";
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diff changeset
225 if (RenderedSubView) {
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diff changeset
226 // Re-render the current line and highlight the expansion range for
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diff changeset
227 // this subview.
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diff changeset
228 ExpansionColumn = NextESV->getStartCol();
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diff changeset
229 renderIndent(OS, IndentLevel);
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diff changeset
230 OS.indent(CombinedColumnWidth + (IndentLevel == 0 ? 0 : 1));
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diff changeset
231 renderLine(OS, *LI, LI.line_number(), WrappedSegment, LineSegments,
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diff changeset
232 ExpansionColumn);
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diff changeset
233 renderViewDivider(NestedIndent, DividerWidth, OS);
77
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diff changeset
234 OS << "\n";
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parents:
diff changeset
235 }
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diff changeset
236 // Render the child subview
83
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diff changeset
237 if (Options.Debug)
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diff changeset
238 errs() << "Expansion at line " << NextESV->getLine() << ", "
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diff changeset
239 << NextESV->getStartCol() << " -> " << NextESV->getEndCol()
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diff changeset
240 << "\n";
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diff changeset
241 NextESV->View->render(OS, false, NestedIndent);
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diff changeset
242 RenderedSubView = true;
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diff changeset
243 }
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diff changeset
244 for (; NextISV != EndISV && NextISV->Line == LI.line_number(); ++NextISV) {
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diff changeset
245 renderViewDivider(NestedIndent, DividerWidth, OS);
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diff changeset
246 OS << "\n";
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diff changeset
247 renderIndent(OS, NestedIndent);
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diff changeset
248 OS << ' ';
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diff changeset
249 Options.colored_ostream(OS, raw_ostream::CYAN) << NextISV->FunctionName
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diff changeset
250 << ":";
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diff changeset
251 OS << "\n";
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diff changeset
252 NextISV->View->render(OS, false, NestedIndent);
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diff changeset
253 RenderedSubView = true;
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diff changeset
254 }
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diff changeset
255 if (RenderedSubView) {
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diff changeset
256 renderViewDivider(NestedIndent, DividerWidth, OS);
77
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parents:
diff changeset
257 OS << "\n";
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parents:
diff changeset
258 }
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parents:
diff changeset
259 }
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parents:
diff changeset
260 }