annotate lib/Option/Option.cpp @ 100:7d135dc70f03

LLVM 3.9
author Miyagi Mitsuki <e135756@ie.u-ryukyu.ac.jp>
date Tue, 26 Jan 2016 22:53:40 +0900
parents afa8332a0e37
children 1172e4bd9c6f
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1 //===--- Option.cpp - Abstract Driver Options -----------------------------===//
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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/Option/Option.h"
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11 #include "llvm/ADT/Twine.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/Support/Debug.h"
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15 #include "llvm/Support/ErrorHandling.h"
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16 #include "llvm/Support/raw_ostream.h"
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17 #include <algorithm>
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18 #include <cassert>
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19
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20 using namespace llvm;
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21 using namespace llvm::opt;
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22
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23 Option::Option(const OptTable::Info *info, const OptTable *owner)
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24 : Info(info), Owner(owner) {
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25
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26 // Multi-level aliases are not supported. This just simplifies option
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27 // tracking, it is not an inherent limitation.
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28 assert((!Info || !getAlias().isValid() || !getAlias().getAlias().isValid()) &&
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29 "Multi-level aliases are not supported.");
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30
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31 if (Info && getAliasArgs()) {
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32 assert(getAlias().isValid() && "Only alias options can have alias args.");
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33 assert(getKind() == FlagClass && "Only Flag aliases can have alias args.");
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34 assert(getAlias().getKind() != FlagClass &&
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35 "Cannot provide alias args to a flag option.");
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36 }
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37 }
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38
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39 void Option::print(raw_ostream &O) const {
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40 O << "<";
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41 switch (getKind()) {
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42 #define P(N) case N: O << #N; break
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43 P(GroupClass);
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44 P(InputClass);
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45 P(UnknownClass);
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46 P(FlagClass);
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47 P(JoinedClass);
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48 P(SeparateClass);
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49 P(CommaJoinedClass);
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50 P(MultiArgClass);
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51 P(JoinedOrSeparateClass);
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52 P(JoinedAndSeparateClass);
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53 P(RemainingArgsClass);
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54 #undef P
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55 }
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56
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57 if (Info->Prefixes) {
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58 O << " Prefixes:[";
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59 for (const char *const *Pre = Info->Prefixes; *Pre != nullptr; ++Pre) {
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60 O << '"' << *Pre << (*(Pre + 1) == nullptr ? "\"" : "\", ");
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61 }
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62 O << ']';
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63 }
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64
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65 O << " Name:\"" << getName() << '"';
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66
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67 const Option Group = getGroup();
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68 if (Group.isValid()) {
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69 O << " Group:";
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70 Group.print(O);
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71 }
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72
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73 const Option Alias = getAlias();
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74 if (Alias.isValid()) {
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75 O << " Alias:";
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76 Alias.print(O);
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77 }
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78
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79 if (getKind() == MultiArgClass)
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80 O << " NumArgs:" << getNumArgs();
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81
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82 O << ">\n";
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83 }
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84
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85 void Option::dump() const { print(dbgs()); }
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86
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87 bool Option::matches(OptSpecifier Opt) const {
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88 // Aliases are never considered in matching, look through them.
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89 const Option Alias = getAlias();
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90 if (Alias.isValid())
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91 return Alias.matches(Opt);
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92
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93 // Check exact match.
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94 if (getID() == Opt.getID())
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95 return true;
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96
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97 const Option Group = getGroup();
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98 if (Group.isValid())
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99 return Group.matches(Opt);
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100 return false;
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101 }
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102
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103 Arg *Option::accept(const ArgList &Args,
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104 unsigned &Index,
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105 unsigned ArgSize) const {
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106 const Option &UnaliasedOption = getUnaliasedOption();
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107 StringRef Spelling;
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108 // If the option was an alias, get the spelling from the unaliased one.
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109 if (getID() == UnaliasedOption.getID()) {
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110 Spelling = StringRef(Args.getArgString(Index), ArgSize);
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111 } else {
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112 Spelling = Args.MakeArgString(Twine(UnaliasedOption.getPrefix()) +
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113 Twine(UnaliasedOption.getName()));
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114 }
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115
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116 switch (getKind()) {
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117 case FlagClass: {
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118 if (ArgSize != strlen(Args.getArgString(Index)))
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119 return nullptr;
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120
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121 Arg *A = new Arg(UnaliasedOption, Spelling, Index++);
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122 if (getAliasArgs()) {
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123 const char *Val = getAliasArgs();
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124 while (*Val != '\0') {
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125 A->getValues().push_back(Val);
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126
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127 // Move past the '\0' to the next argument.
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128 Val += strlen(Val) + 1;
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129 }
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130 }
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131
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132 if (UnaliasedOption.getKind() == JoinedClass && !getAliasArgs())
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parents: 77
diff changeset
133 // A Flag alias for a Joined option must provide an argument.
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
134 A->getValues().push_back("");
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
135
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
136 return A;
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 case JoinedClass: {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
139 const char *Value = Args.getArgString(Index) + ArgSize;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
140 return new Arg(UnaliasedOption, Spelling, Index++, Value);
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 case CommaJoinedClass: {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
143 // Always matches.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
144 const char *Str = Args.getArgString(Index) + ArgSize;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
145 Arg *A = new Arg(UnaliasedOption, Spelling, Index++);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
146
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
147 // Parse out the comma separated values.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
148 const char *Prev = Str;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
149 for (;; ++Str) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
150 char c = *Str;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
151
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
152 if (!c || c == ',') {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
153 if (Prev != Str) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
154 char *Value = new char[Str - Prev + 1];
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
155 memcpy(Value, Prev, Str - Prev);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
156 Value[Str - Prev] = '\0';
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
157 A->getValues().push_back(Value);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
158 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
159
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
160 if (!c)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
161 break;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
162
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
163 Prev = Str + 1;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
164 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
165 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
166 A->setOwnsValues(true);
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 return A;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
169 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
170 case SeparateClass:
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
171 // Matches iff this is an exact match.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
172 // FIXME: Avoid strlen.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
173 if (ArgSize != strlen(Args.getArgString(Index)))
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
174 return nullptr;
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
175
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
176 Index += 2;
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
177 if (Index > Args.getNumInputArgStrings() ||
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
178 Args.getArgString(Index - 1) == nullptr)
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
179 return nullptr;
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
180
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
181 return new Arg(UnaliasedOption, Spelling,
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
182 Index - 2, Args.getArgString(Index - 1));
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
183 case MultiArgClass: {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
184 // Matches iff this is an exact match.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
185 // FIXME: Avoid strlen.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
186 if (ArgSize != strlen(Args.getArgString(Index)))
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
187 return nullptr;
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
188
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
189 Index += 1 + getNumArgs();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
190 if (Index > Args.getNumInputArgStrings())
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
191 return nullptr;
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
192
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
193 Arg *A = new Arg(UnaliasedOption, Spelling, Index - 1 - getNumArgs(),
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
194 Args.getArgString(Index - getNumArgs()));
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
195 for (unsigned i = 1; i != getNumArgs(); ++i)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
196 A->getValues().push_back(Args.getArgString(Index - getNumArgs() + i));
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
197 return A;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
198 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
199 case JoinedOrSeparateClass: {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
200 // 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
201 // FIXME: Avoid strlen.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
202 if (ArgSize != strlen(Args.getArgString(Index))) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
203 const char *Value = Args.getArgString(Index) + ArgSize;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
204 return new Arg(*this, Spelling, Index++, Value);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
205 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
206
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
207 // Otherwise it must be separate.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
208 Index += 2;
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
209 if (Index > Args.getNumInputArgStrings() ||
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
210 Args.getArgString(Index - 1) == nullptr)
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
211 return nullptr;
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
212
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
213 return new Arg(UnaliasedOption, Spelling,
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
214 Index - 2, Args.getArgString(Index - 1));
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
215 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
216 case JoinedAndSeparateClass:
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
217 // Always matches.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
218 Index += 2;
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
219 if (Index > Args.getNumInputArgStrings() ||
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
220 Args.getArgString(Index - 1) == nullptr)
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
221 return nullptr;
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
222
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
223 return new Arg(UnaliasedOption, Spelling, Index - 2,
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
224 Args.getArgString(Index - 2) + ArgSize,
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
225 Args.getArgString(Index - 1));
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
226 case RemainingArgsClass: {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
227 // Matches iff this is an exact match.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
228 // FIXME: Avoid strlen.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
229 if (ArgSize != strlen(Args.getArgString(Index)))
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
230 return nullptr;
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
231 Arg *A = new Arg(UnaliasedOption, Spelling, Index++);
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
232 while (Index < Args.getNumInputArgStrings() &&
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
233 Args.getArgString(Index) != nullptr)
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
234 A->getValues().push_back(Args.getArgString(Index++));
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
235 return A;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
236 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
237 default:
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
238 llvm_unreachable("Invalid option kind!");
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
239 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
240 }