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annotate lib/Option/Option.cpp @ 148:63bd29f05246

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merged
author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Wed, 14 Aug 2019 19:46:37 +0900
parents c2174574ed3a
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 //===- Option.cpp - Abstract Driver Options -------------------------------===//
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2 //
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3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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4 // See https://llvm.org/LICENSE.txt for license information.
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5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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6 //
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7 //===----------------------------------------------------------------------===//
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8
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9 #include "llvm/ADT/StringRef.h"
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10 #include "llvm/ADT/Twine.h"
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11 #include "llvm/Config/llvm-config.h"
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12 #include "llvm/Option/Arg.h"
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13 #include "llvm/Option/ArgList.h"
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14 #include "llvm/Option/Option.h"
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15 #include "llvm/Option/OptTable.h"
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16 #include "llvm/Support/Compiler.h"
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17 #include "llvm/Support/Debug.h"
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18 #include "llvm/Support/ErrorHandling.h"
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19 #include "llvm/Support/raw_ostream.h"
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20 #include <cassert>
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21 #include <cstring>
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22
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23 using namespace llvm;
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24 using namespace llvm::opt;
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25
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26 Option::Option(const OptTable::Info *info, const OptTable *owner)
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27 : Info(info), Owner(owner) {
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28 // Multi-level aliases are not supported. This just simplifies option
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29 // tracking, it is not an inherent limitation.
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30 assert((!Info || !getAlias().isValid() || !getAlias().getAlias().isValid()) &&
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31 "Multi-level aliases are not supported.");
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32
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33 if (Info && getAliasArgs()) {
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34 assert(getAlias().isValid() && "Only alias options can have alias args.");
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35 assert(getKind() == FlagClass && "Only Flag aliases can have alias args.");
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36 assert(getAlias().getKind() != FlagClass &&
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37 "Cannot provide alias args to a flag option.");
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38 }
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39 }
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40
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41 void Option::print(raw_ostream &O) const {
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42 O << "<";
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43 switch (getKind()) {
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44 #define P(N) case N: O << #N; break
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45 P(GroupClass);
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46 P(InputClass);
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47 P(UnknownClass);
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48 P(FlagClass);
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49 P(JoinedClass);
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50 P(ValuesClass);
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51 P(SeparateClass);
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52 P(CommaJoinedClass);
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53 P(MultiArgClass);
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54 P(JoinedOrSeparateClass);
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55 P(JoinedAndSeparateClass);
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56 P(RemainingArgsClass);
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57 P(RemainingArgsJoinedClass);
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58 #undef P
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59 }
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60
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61 if (Info->Prefixes) {
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62 O << " Prefixes:[";
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63 for (const char *const *Pre = Info->Prefixes; *Pre != nullptr; ++Pre) {
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64 O << '"' << *Pre << (*(Pre + 1) == nullptr ? "\"" : "\", ");
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65 }
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66 O << ']';
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67 }
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68
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69 O << " Name:\"" << getName() << '"';
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70
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71 const Option Group = getGroup();
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72 if (Group.isValid()) {
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73 O << " Group:";
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74 Group.print(O);
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75 }
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76
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77 const Option Alias = getAlias();
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78 if (Alias.isValid()) {
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79 O << " Alias:";
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80 Alias.print(O);
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81 }
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82
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83 if (getKind() == MultiArgClass)
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84 O << " NumArgs:" << getNumArgs();
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85
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86 O << ">\n";
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87 }
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88
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89 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
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90 LLVM_DUMP_METHOD void Option::dump() const { print(dbgs()); }
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91 #endif
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92
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93 bool Option::matches(OptSpecifier Opt) const {
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94 // Aliases are never considered in matching, look through them.
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95 const Option Alias = getAlias();
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96 if (Alias.isValid())
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97 return Alias.matches(Opt);
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98
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99 // Check exact match.
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100 if (getID() == Opt.getID())
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101 return true;
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102
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103 const Option Group = getGroup();
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104 if (Group.isValid())
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105 return Group.matches(Opt);
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106 return false;
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107 }
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108
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109 Arg *Option::acceptInternal(const ArgList &Args, unsigned &Index,
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110 unsigned ArgSize) const {
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111 StringRef Spelling = StringRef(Args.getArgString(Index), ArgSize);
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112 switch (getKind()) {
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113 case FlagClass: {
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114 if (ArgSize != strlen(Args.getArgString(Index)))
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115 return nullptr;
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116 return new Arg(*this, Spelling, Index++);
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117 }
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118 case JoinedClass: {
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119 const char *Value = Args.getArgString(Index) + ArgSize;
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120 return new Arg(*this, Spelling, Index++, Value);
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121 }
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122 case CommaJoinedClass: {
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123 // Always matches.
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124 const char *Str = Args.getArgString(Index) + ArgSize;
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125 Arg *A = new Arg(*this, Spelling, Index++);
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126
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127 // Parse out the comma separated values.
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128 const char *Prev = Str;
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129 for (;; ++Str) {
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130 char c = *Str;
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131
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132 if (!c || c == ',') {
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133 if (Prev != Str) {
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134 char *Value = new char[Str - Prev + 1];
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
135 memcpy(Value, Prev, Str - Prev);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
136 Value[Str - Prev] = '\0';
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
137 A->getValues().push_back(Value);
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 if (!c)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
141 break;
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 Prev = Str + 1;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
144 }
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 A->setOwnsValues(true);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
147
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
148 return A;
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 case SeparateClass:
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
151 // Matches iff this is an exact match.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
152 // FIXME: Avoid strlen.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
153 if (ArgSize != strlen(Args.getArgString(Index)))
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
154 return nullptr;
0
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 Index += 2;
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
157 if (Index > Args.getNumInputArgStrings() ||
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
158 Args.getArgString(Index - 1) == nullptr)
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
159 return nullptr;
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
160
147
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
161 return new Arg(*this, Spelling, Index - 2, Args.getArgString(Index - 1));
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
162 case MultiArgClass: {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
163 // Matches iff this is an exact match.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
164 // FIXME: Avoid strlen.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
165 if (ArgSize != strlen(Args.getArgString(Index)))
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
166 return nullptr;
0
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 Index += 1 + getNumArgs();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
169 if (Index > Args.getNumInputArgStrings())
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
170 return nullptr;
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
171
147
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
172 Arg *A = new Arg(*this, Spelling, Index - 1 - getNumArgs(),
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
173 Args.getArgString(Index - getNumArgs()));
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
174 for (unsigned i = 1; i != getNumArgs(); ++i)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
175 A->getValues().push_back(Args.getArgString(Index - getNumArgs() + i));
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
176 return A;
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 case JoinedOrSeparateClass: {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
179 // If this is not an exact match, it is a joined arg.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
180 // FIXME: Avoid strlen.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
181 if (ArgSize != strlen(Args.getArgString(Index))) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
182 const char *Value = Args.getArgString(Index) + ArgSize;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
183 return new Arg(*this, Spelling, Index++, Value);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
184 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
185
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
186 // Otherwise it must be separate.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
187 Index += 2;
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
188 if (Index > Args.getNumInputArgStrings() ||
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
189 Args.getArgString(Index - 1) == nullptr)
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
190 return nullptr;
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
191
147
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
192 return new Arg(*this, Spelling, Index - 2, Args.getArgString(Index - 1));
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 case JoinedAndSeparateClass:
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
195 // Always matches.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
196 Index += 2;
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
197 if (Index > Args.getNumInputArgStrings() ||
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
198 Args.getArgString(Index - 1) == nullptr)
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
199 return nullptr;
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
200
147
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
201 return new Arg(*this, Spelling, Index - 2,
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
202 Args.getArgString(Index - 2) + ArgSize,
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
203 Args.getArgString(Index - 1));
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
204 case RemainingArgsClass: {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
205 // Matches iff this is an exact match.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
206 // FIXME: Avoid strlen.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
207 if (ArgSize != strlen(Args.getArgString(Index)))
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
208 return nullptr;
147
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
209 Arg *A = new Arg(*this, Spelling, Index++);
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
210 while (Index < Args.getNumInputArgStrings() &&
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
211 Args.getArgString(Index) != nullptr)
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
212 A->getValues().push_back(Args.getArgString(Index++));
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
213 return A;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
214 }
120
1172e4bd9c6f update 4.0.0
mir3636
parents: 100
diff changeset
215 case RemainingArgsJoinedClass: {
147
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
216 Arg *A = new Arg(*this, Spelling, Index);
120
1172e4bd9c6f update 4.0.0
mir3636
parents: 100
diff changeset
217 if (ArgSize != strlen(Args.getArgString(Index))) {
1172e4bd9c6f update 4.0.0
mir3636
parents: 100
diff changeset
218 // An inexact match means there is a joined arg.
1172e4bd9c6f update 4.0.0
mir3636
parents: 100
diff changeset
219 A->getValues().push_back(Args.getArgString(Index) + ArgSize);
1172e4bd9c6f update 4.0.0
mir3636
parents: 100
diff changeset
220 }
1172e4bd9c6f update 4.0.0
mir3636
parents: 100
diff changeset
221 Index++;
1172e4bd9c6f update 4.0.0
mir3636
parents: 100
diff changeset
222 while (Index < Args.getNumInputArgStrings() &&
1172e4bd9c6f update 4.0.0
mir3636
parents: 100
diff changeset
223 Args.getArgString(Index) != nullptr)
1172e4bd9c6f update 4.0.0
mir3636
parents: 100
diff changeset
224 A->getValues().push_back(Args.getArgString(Index++));
1172e4bd9c6f update 4.0.0
mir3636
parents: 100
diff changeset
225 return A;
1172e4bd9c6f update 4.0.0
mir3636
parents: 100
diff changeset
226 }
1172e4bd9c6f update 4.0.0
mir3636
parents: 100
diff changeset
227
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
228 default:
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
229 llvm_unreachable("Invalid option kind!");
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
230 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
231 }
147
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
232
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
233 Arg *Option::accept(const ArgList &Args,
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
234 unsigned &Index,
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
235 unsigned ArgSize) const {
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
236 std::unique_ptr<Arg> A(acceptInternal(Args, Index, ArgSize));
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
237 if (!A)
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
238 return nullptr;
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
239
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
240 const Option &UnaliasedOption = getUnaliasedOption();
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
241 if (getID() == UnaliasedOption.getID())
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
242 return A.release();
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
243
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
244 // "A" is an alias for a different flag. For most clients it's more convenient
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
245 // if this function returns unaliased Args, so create an unaliased arg for
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
246 // returning.
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
247
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
248 // This creates a completely new Arg object for the unaliased Arg because
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
249 // the alias and the unaliased arg can have different Kinds and different
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
250 // Values (due to AliasArgs<>).
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
251
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
252 // Get the spelling from the unaliased option.
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
253 StringRef UnaliasedSpelling = Args.MakeArgString(
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
254 Twine(UnaliasedOption.getPrefix()) + Twine(UnaliasedOption.getName()));
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
255
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
256 // It's a bit weird that aliased and unaliased arg share one index, but
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
257 // the index is mostly use as a memory optimization in render().
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
258 // Due to this, ArgList::getArgString(A->getIndex()) will return the spelling
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
259 // of the aliased arg always, while A->getSpelling() returns either the
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
260 // unaliased or the aliased arg, depending on which Arg object it's called on.
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
261 Arg *UnaliasedA = new Arg(UnaliasedOption, UnaliasedSpelling, A->getIndex());
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
262 Arg *RawA = A.get();
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
263 UnaliasedA->setAlias(std::move(A));
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
264
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
265 if (getKind() != FlagClass) {
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
266 // Values are usually owned by the ArgList. The exception are
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
267 // CommaJoined flags, where the Arg owns the values. For aliased flags,
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
268 // make the unaliased Arg the owner of the values.
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
269 // FIXME: There aren't many uses of CommaJoined -- try removing
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
270 // CommaJoined in favor of just calling StringRef::split(',') instead.
c2174574ed3a LLVM 10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 121
diff changeset
271 UnaliasedA->getValues() = RawA->getValues();
c2174574ed3a LLVM 10
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272 UnaliasedA->setOwnsValues(RawA->getOwnsValues());
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273 RawA->setOwnsValues(false);
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274 return UnaliasedA;
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275 }
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parents: 121
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276
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277 // FlagClass aliases can have AliasArgs<>; add those to the unaliased arg.
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278 if (const char *Val = getAliasArgs()) {
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279 while (*Val != '\0') {
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280 UnaliasedA->getValues().push_back(Val);
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parents: 121
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281
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282 // Move past the '\0' to the next argument.
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283 Val += strlen(Val) + 1;
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parents: 121
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284 }
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parents: 121
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285 }
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parents: 121
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286 if (UnaliasedOption.getKind() == JoinedClass && !getAliasArgs())
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287 // A Flag alias for a Joined option must provide an argument.
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288 UnaliasedA->getValues().push_back("");
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parents: 121
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289 return UnaliasedA;
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parents: 121
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290 }