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annotate lib/Support/Twine.cpp @ 0:95c75e76d11b LLVM3.4

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LLVM 3.4
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Thu, 12 Dec 2013 13:56:28 +0900
parents
children 54457678186b
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0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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1 //===-- Twine.cpp - Fast Temporary String Concatenation -------------------===//
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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 #include "llvm/ADT/Twine.h"
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11 #include "llvm/ADT/SmallString.h"
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12 #include "llvm/Support/Debug.h"
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13 #include "llvm/Support/raw_ostream.h"
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14 using namespace llvm;
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15
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16 std::string Twine::str() const {
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17 // If we're storing only a std::string, just return it.
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18 if (LHSKind == StdStringKind && RHSKind == EmptyKind)
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19 return *LHS.stdString;
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20
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21 // Otherwise, flatten and copy the contents first.
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22 SmallString<256> Vec;
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23 return toStringRef(Vec).str();
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24 }
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25
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26 void Twine::toVector(SmallVectorImpl<char> &Out) const {
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27 raw_svector_ostream OS(Out);
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28 print(OS);
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29 }
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30
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31 StringRef Twine::toStringRef(SmallVectorImpl<char> &Out) const {
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32 if (isSingleStringRef())
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33 return getSingleStringRef();
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34 toVector(Out);
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35 return StringRef(Out.data(), Out.size());
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36 }
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37
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38 StringRef Twine::toNullTerminatedStringRef(SmallVectorImpl<char> &Out) const {
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39 if (isUnary()) {
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40 switch (getLHSKind()) {
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41 case CStringKind:
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42 // Already null terminated, yay!
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43 return StringRef(LHS.cString);
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44 case StdStringKind: {
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45 const std::string *str = LHS.stdString;
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46 return StringRef(str->c_str(), str->size());
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47 }
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48 default:
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49 break;
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50 }
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51 }
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52 toVector(Out);
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53 Out.push_back(0);
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54 Out.pop_back();
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55 return StringRef(Out.data(), Out.size());
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56 }
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57
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58 void Twine::printOneChild(raw_ostream &OS, Child Ptr,
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59 NodeKind Kind) const {
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60 switch (Kind) {
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61 case Twine::NullKind: break;
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62 case Twine::EmptyKind: break;
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63 case Twine::TwineKind:
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64 Ptr.twine->print(OS);
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65 break;
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66 case Twine::CStringKind:
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67 OS << Ptr.cString;
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68 break;
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69 case Twine::StdStringKind:
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70 OS << *Ptr.stdString;
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71 break;
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72 case Twine::StringRefKind:
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73 OS << *Ptr.stringRef;
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74 break;
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75 case Twine::CharKind:
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76 OS << Ptr.character;
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77 break;
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78 case Twine::DecUIKind:
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79 OS << Ptr.decUI;
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80 break;
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81 case Twine::DecIKind:
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82 OS << Ptr.decI;
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83 break;
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84 case Twine::DecULKind:
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85 OS << *Ptr.decUL;
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86 break;
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87 case Twine::DecLKind:
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88 OS << *Ptr.decL;
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89 break;
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90 case Twine::DecULLKind:
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91 OS << *Ptr.decULL;
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92 break;
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93 case Twine::DecLLKind:
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94 OS << *Ptr.decLL;
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95 break;
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96 case Twine::UHexKind:
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97 OS.write_hex(*Ptr.uHex);
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98 break;
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99 }
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100 }
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101
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102 void Twine::printOneChildRepr(raw_ostream &OS, Child Ptr,
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103 NodeKind Kind) const {
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104 switch (Kind) {
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105 case Twine::NullKind:
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106 OS << "null"; break;
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107 case Twine::EmptyKind:
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108 OS << "empty"; break;
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109 case Twine::TwineKind:
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110 OS << "rope:";
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111 Ptr.twine->printRepr(OS);
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112 break;
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113 case Twine::CStringKind:
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114 OS << "cstring:\""
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115 << Ptr.cString << "\"";
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116 break;
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117 case Twine::StdStringKind:
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118 OS << "std::string:\""
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119 << Ptr.stdString << "\"";
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120 break;
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121 case Twine::StringRefKind:
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122 OS << "stringref:\""
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123 << Ptr.stringRef << "\"";
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124 break;
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125 case Twine::CharKind:
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126 OS << "char:\"" << Ptr.character << "\"";
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127 break;
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128 case Twine::DecUIKind:
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129 OS << "decUI:\"" << Ptr.decUI << "\"";
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130 break;
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131 case Twine::DecIKind:
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132 OS << "decI:\"" << Ptr.decI << "\"";
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133 break;
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parents:
diff changeset
134 case Twine::DecULKind:
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
135 OS << "decUL:\"" << *Ptr.decUL << "\"";
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
136 break;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
137 case Twine::DecLKind:
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
138 OS << "decL:\"" << *Ptr.decL << "\"";
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
139 break;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
140 case Twine::DecULLKind:
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
141 OS << "decULL:\"" << *Ptr.decULL << "\"";
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
142 break;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
143 case Twine::DecLLKind:
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
144 OS << "decLL:\"" << *Ptr.decLL << "\"";
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
145 break;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
146 case Twine::UHexKind:
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
147 OS << "uhex:\"" << Ptr.uHex << "\"";
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
148 break;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
149 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
150 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
151
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
152 void Twine::print(raw_ostream &OS) const {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
153 printOneChild(OS, LHS, getLHSKind());
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
154 printOneChild(OS, RHS, getRHSKind());
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
155 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
156
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
157 void Twine::printRepr(raw_ostream &OS) const {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
158 OS << "(Twine ";
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
159 printOneChildRepr(OS, LHS, getLHSKind());
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
160 OS << " ";
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
161 printOneChildRepr(OS, RHS, getRHSKind());
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
162 OS << ")";
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
163 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
164
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
165 void Twine::dump() const {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
166 print(llvm::dbgs());
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
167 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
168
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
169 void Twine::dumpRepr() const {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
170 printRepr(llvm::dbgs());
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
171 }