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1 //===- DiffPrinter.h ------------------------------------------ *- C++ --*-===//
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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 #ifndef LLVM_TOOLS_LLVMPDBDUMP_DIFFPRINTER_H
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11 #define LLVM_TOOLS_LLVMPDBDUMP_DIFFPRINTER_H
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12
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13 #include "llvm/ADT/ArrayRef.h"
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14 #include "llvm/ADT/StringMap.h"
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15 #include "llvm/ADT/StringRef.h"
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16 #include "llvm/DebugInfo/PDB/Native/RawConstants.h"
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17 #include "llvm/Support/FormatVariadic.h"
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18 #include "llvm/Support/raw_ostream.h"
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19
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20 #include <list>
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21 #include <unordered_set>
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22
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23 namespace std {
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24 template <> struct hash<llvm::pdb::PdbRaw_FeatureSig> {
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25 typedef llvm::pdb::PdbRaw_FeatureSig argument_type;
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26 typedef std::size_t result_type;
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27 result_type operator()(argument_type Item) const {
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28 return std::hash<uint32_t>{}(uint32_t(Item));
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29 }
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30 };
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31 } // namespace std
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32
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33 namespace llvm {
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34 namespace pdb {
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35
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36 class PDBFile;
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37
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38 enum class DiffResult { UNSPECIFIED, IDENTICAL, EQUIVALENT, DIFFERENT };
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39
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40 struct IdenticalDiffProvider {
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41 template <typename T, typename U>
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42 DiffResult compare(const T &Left, const U &Right) {
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43 return (Left == Right) ? DiffResult::IDENTICAL : DiffResult::DIFFERENT;
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44 }
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45
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46 template <typename T> std::string format(const T &Item, bool Right) {
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47 return formatv("{0}", Item).str();
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48 }
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49 };
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50
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51 struct EquivalentDiffProvider {
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52 template <typename T, typename U>
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53 DiffResult compare(const T &Left, const U &Right) {
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54 return (Left == Right) ? DiffResult::IDENTICAL : DiffResult::EQUIVALENT;
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55 }
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56
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57 template <typename T> std::string format(const T &Item, bool Right) {
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58 return formatv("{0}", Item).str();
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59 }
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60 };
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61
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62 class DiffPrinter {
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63 public:
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64 DiffPrinter(uint32_t Indent, StringRef Header, uint32_t PropertyWidth,
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65 uint32_t FieldWidth, bool Result, bool Values,
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66 raw_ostream &Stream);
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67 ~DiffPrinter();
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68
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69 template <typename T, typename U> struct Identical {};
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70
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71 template <typename Provider = IdenticalDiffProvider, typename T, typename U>
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72 void print(StringRef Property, const T &Left, const U &Right,
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73 Provider P = Provider()) {
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74 std::string L = P.format(Left, false);
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75 std::string R = P.format(Right, true);
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76
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77 DiffResult Result = P.compare(Left, Right);
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78 printExplicit(Property, Result, L, R);
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79 }
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80
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81 void printExplicit(StringRef Property, DiffResult C, StringRef Left,
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82 StringRef Right);
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83
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84 template <typename T, typename U>
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85 void printExplicit(StringRef Property, DiffResult C, const T &Left,
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86 const U &Right) {
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87 std::string L = formatv("{0}", Left).str();
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88 std::string R = formatv("{0}", Right).str();
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89 printExplicit(Property, C, StringRef(L), StringRef(R));
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90 }
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91
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92 template <typename T, typename U>
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93 void diffUnorderedArray(StringRef Property, ArrayRef<T> Left,
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94 ArrayRef<U> Right) {
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95 std::unordered_set<T> LS(Left.begin(), Left.end());
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96 std::unordered_set<U> RS(Right.begin(), Right.end());
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97 std::string Count1 = formatv("{0} element(s)", Left.size());
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98 std::string Count2 = formatv("{0} element(s)", Right.size());
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99 print(std::string(Property) + "s (set)", Count1, Count2);
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100 for (const auto &L : LS) {
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101 auto Iter = RS.find(L);
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102 std::string Text = formatv("{0}", L).str();
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103 if (Iter == RS.end()) {
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104 print(Property, Text, "(not present)");
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105 continue;
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106 }
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107 print(Property, Text, Text);
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108 RS.erase(Iter);
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109 }
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110 for (const auto &R : RS) {
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111 auto Iter = LS.find(R);
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112 std::string Text = formatv("{0}", R).str();
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113 if (Iter == LS.end()) {
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114 print(Property, "(not present)", Text);
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115 continue;
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116 }
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117 print(Property, Text, Text);
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118 }
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119 }
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120
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121 template <typename ValueProvider = IdenticalDiffProvider, typename T,
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122 typename U>
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123 void diffUnorderedMap(StringRef Property, const StringMap<T> &Left,
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124 const StringMap<U> &Right,
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125 ValueProvider P = ValueProvider()) {
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126 StringMap<U> RightCopy(Right);
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127
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128 std::string Count1 = formatv("{0} element(s)", Left.size());
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129 std::string Count2 = formatv("{0} element(s)", Right.size());
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130 print(std::string(Property) + "s (map)", Count1, Count2);
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131
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132 for (const auto &L : Left) {
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133 auto Iter = RightCopy.find(L.getKey());
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134 if (Iter == RightCopy.end()) {
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135 printExplicit(L.getKey(), DiffResult::DIFFERENT, L.getValue(),
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136 "(not present)");
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137 continue;
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138 }
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139
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140 print(L.getKey(), L.getValue(), Iter->getValue(), P);
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141 RightCopy.erase(Iter);
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142 }
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143
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144 for (const auto &R : RightCopy) {
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145 printExplicit(R.getKey(), DiffResult::DIFFERENT, "(not present)",
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146 R.getValue());
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147 }
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148 }
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149
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150 void printFullRow(StringRef Text);
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151
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152 private:
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153 uint32_t tableWidth() const;
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154
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155 void printHeaderRow();
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156 void printSeparatorRow();
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157 void newLine(char InitialChar = '|');
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158 void printValue(StringRef Value, DiffResult C, AlignStyle Style,
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159 uint32_t Width, bool Force);
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160 void printResult(DiffResult Result);
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161
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162 bool PrintResult;
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163 bool PrintValues;
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164 uint32_t Indent;
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165 uint32_t PropertyWidth;
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166 uint32_t FieldWidth;
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167 raw_ostream &OS;
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168 };
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169 } // namespace pdb
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170 } // namespace llvm
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171
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172 #endif
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