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annotate lib/Support/StringRef.cpp @ 121:803732b1fca8

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LLVM 5.0
author kono
date Fri, 27 Oct 2017 17:07:41 +0900
parents 1172e4bd9c6f
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 //===-- StringRef.cpp - Lightweight String References ---------------------===//
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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/StringRef.h"
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11 #include "llvm/ADT/APFloat.h"
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12 #include "llvm/ADT/APInt.h"
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13 #include "llvm/ADT/Hashing.h"
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14 #include "llvm/ADT/edit_distance.h"
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15 #include <bitset>
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16
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17 using namespace llvm;
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18
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19 // MSVC emits references to this into the translation units which reference it.
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20 #ifndef _MSC_VER
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21 const size_t StringRef::npos;
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22 #endif
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23
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24 static char ascii_tolower(char x) {
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25 if (x >= 'A' && x <= 'Z')
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26 return x - 'A' + 'a';
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27 return x;
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28 }
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29
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30 static char ascii_toupper(char x) {
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31 if (x >= 'a' && x <= 'z')
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32 return x - 'a' + 'A';
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33 return x;
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34 }
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35
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36 static bool ascii_isdigit(char x) {
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37 return x >= '0' && x <= '9';
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38 }
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39
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40 // strncasecmp() is not available on non-POSIX systems, so define an
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41 // alternative function here.
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42 static int ascii_strncasecmp(const char *LHS, const char *RHS, size_t Length) {
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43 for (size_t I = 0; I < Length; ++I) {
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44 unsigned char LHC = ascii_tolower(LHS[I]);
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45 unsigned char RHC = ascii_tolower(RHS[I]);
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46 if (LHC != RHC)
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47 return LHC < RHC ? -1 : 1;
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48 }
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49 return 0;
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50 }
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51
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52 /// compare_lower - Compare strings, ignoring case.
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53 int StringRef::compare_lower(StringRef RHS) const {
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54 if (int Res = ascii_strncasecmp(Data, RHS.Data, std::min(Length, RHS.Length)))
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55 return Res;
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56 if (Length == RHS.Length)
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57 return 0;
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58 return Length < RHS.Length ? -1 : 1;
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59 }
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60
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61 /// Check if this string starts with the given \p Prefix, ignoring case.
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62 bool StringRef::startswith_lower(StringRef Prefix) const {
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63 return Length >= Prefix.Length &&
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64 ascii_strncasecmp(Data, Prefix.Data, Prefix.Length) == 0;
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65 }
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66
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67 /// Check if this string ends with the given \p Suffix, ignoring case.
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68 bool StringRef::endswith_lower(StringRef Suffix) const {
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69 return Length >= Suffix.Length &&
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70 ascii_strncasecmp(end() - Suffix.Length, Suffix.Data, Suffix.Length) == 0;
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71 }
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72
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73 size_t StringRef::find_lower(char C, size_t From) const {
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74 char L = ascii_tolower(C);
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75 return find_if([L](char D) { return ascii_tolower(D) == L; }, From);
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76 }
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77
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78 /// compare_numeric - Compare strings, handle embedded numbers.
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79 int StringRef::compare_numeric(StringRef RHS) const {
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80 for (size_t I = 0, E = std::min(Length, RHS.Length); I != E; ++I) {
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81 // Check for sequences of digits.
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82 if (ascii_isdigit(Data[I]) && ascii_isdigit(RHS.Data[I])) {
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83 // The longer sequence of numbers is considered larger.
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84 // This doesn't really handle prefixed zeros well.
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85 size_t J;
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86 for (J = I + 1; J != E + 1; ++J) {
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87 bool ld = J < Length && ascii_isdigit(Data[J]);
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88 bool rd = J < RHS.Length && ascii_isdigit(RHS.Data[J]);
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89 if (ld != rd)
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90 return rd ? -1 : 1;
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91 if (!rd)
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92 break;
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93 }
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94 // The two number sequences have the same length (J-I), just memcmp them.
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95 if (int Res = compareMemory(Data + I, RHS.Data + I, J - I))
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96 return Res < 0 ? -1 : 1;
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97 // Identical number sequences, continue search after the numbers.
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98 I = J - 1;
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99 continue;
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100 }
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101 if (Data[I] != RHS.Data[I])
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102 return (unsigned char)Data[I] < (unsigned char)RHS.Data[I] ? -1 : 1;
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103 }
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104 if (Length == RHS.Length)
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105 return 0;
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106 return Length < RHS.Length ? -1 : 1;
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107 }
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108
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109 // Compute the edit distance between the two given strings.
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110 unsigned StringRef::edit_distance(llvm::StringRef Other,
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111 bool AllowReplacements,
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112 unsigned MaxEditDistance) const {
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113 return llvm::ComputeEditDistance(
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114 makeArrayRef(data(), size()),
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115 makeArrayRef(Other.data(), Other.size()),
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116 AllowReplacements, MaxEditDistance);
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117 }
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118
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119 //===----------------------------------------------------------------------===//
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120 // String Operations
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121 //===----------------------------------------------------------------------===//
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122
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123 std::string StringRef::lower() const {
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124 std::string Result(size(), char());
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125 for (size_type i = 0, e = size(); i != e; ++i) {
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126 Result[i] = ascii_tolower(Data[i]);
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127 }
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128 return Result;
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129 }
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130
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131 std::string StringRef::upper() const {
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
132 std::string Result(size(), char());
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
133 for (size_type i = 0, e = size(); i != e; ++i) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
134 Result[i] = ascii_toupper(Data[i]);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
135 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
136 return Result;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
137 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
138
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
139 //===----------------------------------------------------------------------===//
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
140 // String Searching
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
141 //===----------------------------------------------------------------------===//
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
142
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
143
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
144 /// find - Search for the first string \arg Str in the string.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
145 ///
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
146 /// \return - The index of the first occurrence of \arg Str, or npos if not
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
147 /// found.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
148 size_t StringRef::find(StringRef Str, size_t From) const {
95
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
149 if (From > Length)
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
150 return npos;
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
151
121
803732b1fca8 LLVM 5.0
kono
parents: 120
diff changeset
152 const char *Start = Data + From;
803732b1fca8 LLVM 5.0
kono
parents: 120
diff changeset
153 size_t Size = Length - From;
803732b1fca8 LLVM 5.0
kono
parents: 120
diff changeset
154
95
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
155 const char *Needle = Str.data();
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
156 size_t N = Str.size();
95
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
157 if (N == 0)
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
158 return From;
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
159 if (Size < N)
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
160 return npos;
121
803732b1fca8 LLVM 5.0
kono
parents: 120
diff changeset
161 if (N == 1) {
803732b1fca8 LLVM 5.0
kono
parents: 120
diff changeset
162 const char *Ptr = (const char *)::memchr(Start, Needle[0], Size);
803732b1fca8 LLVM 5.0
kono
parents: 120
diff changeset
163 return Ptr == nullptr ? npos : Ptr - Data;
803732b1fca8 LLVM 5.0
kono
parents: 120
diff changeset
164 }
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
165
95
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
166 const char *Stop = Start + (Size - N + 1);
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
167
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
168 // For short haystacks or unsupported needles fall back to the naive algorithm
95
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
169 if (Size < 16 || N > 255) {
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
170 do {
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
171 if (std::memcmp(Start, Needle, N) == 0)
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
172 return Start - Data;
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
173 ++Start;
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
174 } while (Start < Stop);
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
175 return npos;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
176 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
177
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
178 // Build the bad char heuristic table, with uint8_t to reduce cache thrashing.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
179 uint8_t BadCharSkip[256];
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
180 std::memset(BadCharSkip, N, 256);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
181 for (unsigned i = 0; i != N-1; ++i)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
182 BadCharSkip[(uint8_t)Str[i]] = N-1-i;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
183
95
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
184 do {
121
803732b1fca8 LLVM 5.0
kono
parents: 120
diff changeset
185 uint8_t Last = Start[N - 1];
803732b1fca8 LLVM 5.0
kono
parents: 120
diff changeset
186 if (LLVM_UNLIKELY(Last == (uint8_t)Needle[N - 1]))
803732b1fca8 LLVM 5.0
kono
parents: 120
diff changeset
187 if (std::memcmp(Start, Needle, N - 1) == 0)
803732b1fca8 LLVM 5.0
kono
parents: 120
diff changeset
188 return Start - Data;
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
189
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
190 // Otherwise skip the appropriate number of bytes.
121
803732b1fca8 LLVM 5.0
kono
parents: 120
diff changeset
191 Start += BadCharSkip[Last];
95
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
192 } while (Start < Stop);
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
193
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
194 return npos;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
195 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
196
120
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
197 size_t StringRef::find_lower(StringRef Str, size_t From) const {
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
198 StringRef This = substr(From);
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
199 while (This.size() >= Str.size()) {
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
200 if (This.startswith_lower(Str))
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
201 return From;
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
202 This = This.drop_front();
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
203 ++From;
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
204 }
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
205 return npos;
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
206 }
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
207
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
208 size_t StringRef::rfind_lower(char C, size_t From) const {
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
209 From = std::min(From, Length);
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
210 size_t i = From;
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
211 while (i != 0) {
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
212 --i;
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
213 if (ascii_tolower(Data[i]) == ascii_tolower(C))
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
214 return i;
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
215 }
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
216 return npos;
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
217 }
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
218
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
219 /// rfind - Search for the last string \arg Str in the string.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
220 ///
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
221 /// \return - The index of the last occurrence of \arg Str, or npos if not
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
222 /// found.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
223 size_t StringRef::rfind(StringRef Str) const {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
224 size_t N = Str.size();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
225 if (N > Length)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
226 return npos;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
227 for (size_t i = Length - N + 1, e = 0; i != e;) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
228 --i;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
229 if (substr(i, N).equals(Str))
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
230 return i;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
231 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
232 return npos;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
233 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
234
120
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
235 size_t StringRef::rfind_lower(StringRef Str) const {
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
236 size_t N = Str.size();
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
237 if (N > Length)
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
238 return npos;
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
239 for (size_t i = Length - N + 1, e = 0; i != e;) {
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
240 --i;
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
241 if (substr(i, N).equals_lower(Str))
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
242 return i;
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
243 }
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
244 return npos;
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
245 }
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
246
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
247 /// find_first_of - Find the first character in the string that is in \arg
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
248 /// Chars, or npos if not found.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
249 ///
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
250 /// Note: O(size() + Chars.size())
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
251 StringRef::size_type StringRef::find_first_of(StringRef Chars,
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
252 size_t From) const {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
253 std::bitset<1 << CHAR_BIT> CharBits;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
254 for (size_type i = 0; i != Chars.size(); ++i)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
255 CharBits.set((unsigned char)Chars[i]);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
256
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
257 for (size_type i = std::min(From, Length), e = Length; i != e; ++i)
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
258 if (CharBits.test((unsigned char)Data[i]))
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
259 return i;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
260 return npos;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
261 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
262
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
263 /// find_first_not_of - Find the first character in the string that is not
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
264 /// \arg C or npos if not found.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
265 StringRef::size_type StringRef::find_first_not_of(char C, size_t From) const {
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
266 for (size_type i = std::min(From, Length), e = Length; i != e; ++i)
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
267 if (Data[i] != C)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
268 return i;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
269 return npos;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
270 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
271
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
272 /// find_first_not_of - Find the first character in the string that is not
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
273 /// in the string \arg Chars, or npos if not found.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
274 ///
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
275 /// Note: O(size() + Chars.size())
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
276 StringRef::size_type StringRef::find_first_not_of(StringRef Chars,
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
277 size_t From) const {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
278 std::bitset<1 << CHAR_BIT> CharBits;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
279 for (size_type i = 0; i != Chars.size(); ++i)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
280 CharBits.set((unsigned char)Chars[i]);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
281
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
282 for (size_type i = std::min(From, Length), e = Length; i != e; ++i)
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
283 if (!CharBits.test((unsigned char)Data[i]))
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
284 return i;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
285 return npos;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
286 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
287
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
288 /// find_last_of - Find the last character in the string that is in \arg C,
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
289 /// or npos if not found.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
290 ///
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
291 /// Note: O(size() + Chars.size())
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
292 StringRef::size_type StringRef::find_last_of(StringRef Chars,
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
293 size_t From) const {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
294 std::bitset<1 << CHAR_BIT> CharBits;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
295 for (size_type i = 0; i != Chars.size(); ++i)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
296 CharBits.set((unsigned char)Chars[i]);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
297
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
298 for (size_type i = std::min(From, Length) - 1, e = -1; i != e; --i)
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
299 if (CharBits.test((unsigned char)Data[i]))
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
300 return i;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
301 return npos;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
302 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
303
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
304 /// find_last_not_of - Find the last character in the string that is not
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
305 /// \arg C, or npos if not found.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
306 StringRef::size_type StringRef::find_last_not_of(char C, size_t From) const {
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
307 for (size_type i = std::min(From, Length) - 1, e = -1; i != e; --i)
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
308 if (Data[i] != C)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
309 return i;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
310 return npos;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
311 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
312
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
313 /// find_last_not_of - Find the last character in the string that is not in
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
314 /// \arg Chars, or npos if not found.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
315 ///
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
316 /// Note: O(size() + Chars.size())
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
317 StringRef::size_type StringRef::find_last_not_of(StringRef Chars,
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
318 size_t From) const {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
319 std::bitset<1 << CHAR_BIT> CharBits;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
320 for (size_type i = 0, e = Chars.size(); i != e; ++i)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
321 CharBits.set((unsigned char)Chars[i]);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
322
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
323 for (size_type i = std::min(From, Length) - 1, e = -1; i != e; --i)
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
324 if (!CharBits.test((unsigned char)Data[i]))
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
325 return i;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
326 return npos;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
327 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
328
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
329 void StringRef::split(SmallVectorImpl<StringRef> &A,
95
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
330 StringRef Separator, int MaxSplit,
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
331 bool KeepEmpty) const {
95
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
332 StringRef S = *this;
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
333
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
334 // Count down from MaxSplit. When MaxSplit is -1, this will just split
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
335 // "forever". This doesn't support splitting more than 2^31 times
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
336 // intentionally; if we ever want that we can make MaxSplit a 64-bit integer
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
337 // but that seems unlikely to be useful.
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
338 while (MaxSplit-- != 0) {
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
339 size_t Idx = S.find(Separator);
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
340 if (Idx == npos)
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
341 break;
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
342
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
343 // Push this split.
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
344 if (KeepEmpty || Idx > 0)
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
345 A.push_back(S.slice(0, Idx));
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
346
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
347 // Jump forward.
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
348 S = S.slice(Idx + Separator.size(), npos);
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
349 }
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
350
95
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
351 // Push the tail.
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
352 if (KeepEmpty || !S.empty())
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
353 A.push_back(S);
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
354 }
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
355
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
356 void StringRef::split(SmallVectorImpl<StringRef> &A, char Separator,
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
357 int MaxSplit, bool KeepEmpty) const {
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
358 StringRef S = *this;
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
359
95
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
360 // Count down from MaxSplit. When MaxSplit is -1, this will just split
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
361 // "forever". This doesn't support splitting more than 2^31 times
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
362 // intentionally; if we ever want that we can make MaxSplit a 64-bit integer
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
363 // but that seems unlikely to be useful.
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
364 while (MaxSplit-- != 0) {
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
365 size_t Idx = S.find(Separator);
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
366 if (Idx == npos)
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
367 break;
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
368
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
369 // Push this split.
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
370 if (KeepEmpty || Idx > 0)
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
371 A.push_back(S.slice(0, Idx));
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
372
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
373 // Jump forward.
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
374 S = S.slice(Idx + 1, npos);
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
375 }
95
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
376
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
377 // Push the tail.
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
378 if (KeepEmpty || !S.empty())
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
379 A.push_back(S);
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
380 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
381
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
382 //===----------------------------------------------------------------------===//
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
383 // Helpful Algorithms
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
384 //===----------------------------------------------------------------------===//
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
385
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
386 /// count - Return the number of non-overlapped occurrences of \arg Str in
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
387 /// the string.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
388 size_t StringRef::count(StringRef Str) const {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
389 size_t Count = 0;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
390 size_t N = Str.size();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
391 if (N > Length)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
392 return 0;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
393 for (size_t i = 0, e = Length - N + 1; i != e; ++i)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
394 if (substr(i, N).equals(Str))
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
395 ++Count;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
396 return Count;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
397 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
398
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
399 static unsigned GetAutoSenseRadix(StringRef &Str) {
120
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
400 if (Str.empty())
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
401 return 10;
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
402
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
403 if (Str.startswith("0x") || Str.startswith("0X")) {
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
404 Str = Str.substr(2);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
405 return 16;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
406 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
407
120
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
408 if (Str.startswith("0b") || Str.startswith("0B")) {
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
409 Str = Str.substr(2);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
410 return 2;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
411 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
412
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
413 if (Str.startswith("0o")) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
414 Str = Str.substr(2);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
415 return 8;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
416 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
417
120
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
418 if (Str[0] == '0' && Str.size() > 1 && ascii_isdigit(Str[1])) {
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
419 Str = Str.substr(1);
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
420 return 8;
120
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
421 }
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
422
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
423 return 10;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
424 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
425
120
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
426 bool llvm::consumeUnsignedInteger(StringRef &Str, unsigned Radix,
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
427 unsigned long long &Result) {
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
428 // Autosense radix if not specified.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
429 if (Radix == 0)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
430 Radix = GetAutoSenseRadix(Str);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
431
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
432 // Empty strings (after the radix autosense) are invalid.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
433 if (Str.empty()) return true;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
434
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
435 // Parse all the bytes of the string given this radix. Watch for overflow.
120
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
436 StringRef Str2 = Str;
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
437 Result = 0;
120
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
438 while (!Str2.empty()) {
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
439 unsigned CharVal;
120
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
440 if (Str2[0] >= '0' && Str2[0] <= '9')
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
441 CharVal = Str2[0] - '0';
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
442 else if (Str2[0] >= 'a' && Str2[0] <= 'z')
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
443 CharVal = Str2[0] - 'a' + 10;
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
444 else if (Str2[0] >= 'A' && Str2[0] <= 'Z')
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
445 CharVal = Str2[0] - 'A' + 10;
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
446 else
120
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
447 break;
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
448
120
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
449 // If the parsed value is larger than the integer radix, we cannot
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
450 // consume any more characters.
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
451 if (CharVal >= Radix)
120
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
452 break;
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
453
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
454 // Add in this character.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
455 unsigned long long PrevResult = Result;
120
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
456 Result = Result * Radix + CharVal;
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
457
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
458 // Check for overflow by shifting back and seeing if bits were lost.
120
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
459 if (Result / Radix < PrevResult)
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
460 return true;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
461
120
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
462 Str2 = Str2.substr(1);
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
463 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
464
120
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
465 // We consider the operation a failure if no characters were consumed
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
466 // successfully.
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
467 if (Str.size() == Str2.size())
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
468 return true;
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
469
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
470 Str = Str2;
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
471 return false;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
472 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
473
120
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
474 bool llvm::consumeSignedInteger(StringRef &Str, unsigned Radix,
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
475 long long &Result) {
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
476 unsigned long long ULLVal;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
477
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
478 // Handle positive strings first.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
479 if (Str.empty() || Str.front() != '-') {
120
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
480 if (consumeUnsignedInteger(Str, Radix, ULLVal) ||
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
481 // Check for value so large it overflows a signed value.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
482 (long long)ULLVal < 0)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
483 return true;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
484 Result = ULLVal;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
485 return false;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
486 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
487
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
488 // Get the positive part of the value.
120
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
489 StringRef Str2 = Str.drop_front(1);
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
490 if (consumeUnsignedInteger(Str2, Radix, ULLVal) ||
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
491 // Reject values so large they'd overflow as negative signed, but allow
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
492 // "-0". This negates the unsigned so that the negative isn't undefined
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
493 // on signed overflow.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
494 (long long)-ULLVal > 0)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
495 return true;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
496
120
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
497 Str = Str2;
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
498 Result = -ULLVal;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
499 return false;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
500 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
501
120
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
502 /// GetAsUnsignedInteger - Workhorse method that converts a integer character
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
503 /// sequence of radix up to 36 to an unsigned long long value.
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
504 bool llvm::getAsUnsignedInteger(StringRef Str, unsigned Radix,
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
505 unsigned long long &Result) {
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
506 if (consumeUnsignedInteger(Str, Radix, Result))
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
507 return true;
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
508
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
509 // For getAsUnsignedInteger, we require the whole string to be consumed or
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
510 // else we consider it a failure.
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
511 return !Str.empty();
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
512 }
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
513
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
514 bool llvm::getAsSignedInteger(StringRef Str, unsigned Radix,
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
515 long long &Result) {
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
516 if (consumeSignedInteger(Str, Radix, Result))
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
517 return true;
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
518
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
519 // For getAsSignedInteger, we require the whole string to be consumed or else
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
520 // we consider it a failure.
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
521 return !Str.empty();
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
522 }
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
523
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
524 bool StringRef::getAsInteger(unsigned Radix, APInt &Result) const {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
525 StringRef Str = *this;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
526
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
527 // Autosense radix if not specified.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
528 if (Radix == 0)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
529 Radix = GetAutoSenseRadix(Str);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
530
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
531 assert(Radix > 1 && Radix <= 36);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
532
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
533 // Empty strings (after the radix autosense) are invalid.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
534 if (Str.empty()) return true;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
535
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
536 // Skip leading zeroes. This can be a significant improvement if
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
537 // it means we don't need > 64 bits.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
538 while (!Str.empty() && Str.front() == '0')
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
539 Str = Str.substr(1);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
540
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
541 // If it was nothing but zeroes....
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
542 if (Str.empty()) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
543 Result = APInt(64, 0);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
544 return false;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
545 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
546
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
547 // (Over-)estimate the required number of bits.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
548 unsigned Log2Radix = 0;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
549 while ((1U << Log2Radix) < Radix) Log2Radix++;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
550 bool IsPowerOf2Radix = ((1U << Log2Radix) == Radix);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
551
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
552 unsigned BitWidth = Log2Radix * Str.size();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
553 if (BitWidth < Result.getBitWidth())
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
554 BitWidth = Result.getBitWidth(); // don't shrink the result
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
555 else if (BitWidth > Result.getBitWidth())
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
556 Result = Result.zext(BitWidth);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
557
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
558 APInt RadixAP, CharAP; // unused unless !IsPowerOf2Radix
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
559 if (!IsPowerOf2Radix) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
560 // These must have the same bit-width as Result.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
561 RadixAP = APInt(BitWidth, Radix);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
562 CharAP = APInt(BitWidth, 0);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
563 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
564
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
565 // Parse all the bytes of the string given this radix.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
566 Result = 0;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
567 while (!Str.empty()) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
568 unsigned CharVal;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
569 if (Str[0] >= '0' && Str[0] <= '9')
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
570 CharVal = Str[0]-'0';
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
571 else if (Str[0] >= 'a' && Str[0] <= 'z')
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
572 CharVal = Str[0]-'a'+10;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
573 else if (Str[0] >= 'A' && Str[0] <= 'Z')
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
574 CharVal = Str[0]-'A'+10;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
575 else
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
576 return true;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
577
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
578 // If the parsed value is larger than the integer radix, the string is
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
579 // invalid.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
580 if (CharVal >= Radix)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
581 return true;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
582
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
583 // Add in this character.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
584 if (IsPowerOf2Radix) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
585 Result <<= Log2Radix;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
586 Result |= CharVal;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
587 } else {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
588 Result *= RadixAP;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
589 CharAP = CharVal;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
590 Result += CharAP;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
591 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
592
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
593 Str = Str.substr(1);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
594 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
595
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
596 return false;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
597 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
598
121
803732b1fca8 LLVM 5.0
kono
parents: 120
diff changeset
599 bool StringRef::getAsDouble(double &Result, bool AllowInexact) const {
803732b1fca8 LLVM 5.0
kono
parents: 120
diff changeset
600 APFloat F(0.0);
803732b1fca8 LLVM 5.0
kono
parents: 120
diff changeset
601 APFloat::opStatus Status =
803732b1fca8 LLVM 5.0
kono
parents: 120
diff changeset
602 F.convertFromString(*this, APFloat::rmNearestTiesToEven);
803732b1fca8 LLVM 5.0
kono
parents: 120
diff changeset
603 if (Status != APFloat::opOK) {
803732b1fca8 LLVM 5.0
kono
parents: 120
diff changeset
604 if (!AllowInexact || Status != APFloat::opInexact)
803732b1fca8 LLVM 5.0
kono
parents: 120
diff changeset
605 return true;
803732b1fca8 LLVM 5.0
kono
parents: 120
diff changeset
606 }
803732b1fca8 LLVM 5.0
kono
parents: 120
diff changeset
607
803732b1fca8 LLVM 5.0
kono
parents: 120
diff changeset
608 Result = F.convertToDouble();
803732b1fca8 LLVM 5.0
kono
parents: 120
diff changeset
609 return false;
803732b1fca8 LLVM 5.0
kono
parents: 120
diff changeset
610 }
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
611
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
612 // Implementation of StringRef hashing.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
613 hash_code llvm::hash_value(StringRef S) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
614 return hash_combine_range(S.begin(), S.end());
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
615 }