1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
|
//===--- Option.cpp - Abstract Driver Options ---------------------------*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "clang/Driver/Option.h"
#include "clang/Driver/Arg.h"
#include "clang/Driver/ArgList.h"
#include "llvm/Support/raw_ostream.h"
#include <cassert>
#include <algorithm>
using namespace clang::driver;
Option::Option(OptionClass _Kind, OptSpecifier _ID, const char *_Name,
const OptionGroup *_Group, const Option *_Alias)
: Kind(_Kind), ID(_ID.getID()), Name(_Name), Group(_Group), Alias(_Alias),
Unsupported(false), LinkerInput(false), NoOptAsInput(false),
ForceSeparateRender(false), ForceJoinedRender(false),
DriverOption(false), NoArgumentUnused(false) {
// Multi-level aliases are not supported, and alias options cannot
// have groups. This just simplifies option tracking, it is not an
// inherent limitation.
assert((!Alias || (!Alias->Alias && !Group)) &&
"Multi-level aliases and aliases with groups are unsupported.");
}
Option::~Option() {
}
void Option::dump() const {
llvm::errs() << "<";
switch (Kind) {
default:
assert(0 && "Invalid kind");
#define P(N) case N: llvm::errs() << #N; break
P(GroupClass);
P(InputClass);
P(UnknownClass);
P(FlagClass);
P(JoinedClass);
P(SeparateClass);
P(CommaJoinedClass);
P(MultiArgClass);
P(JoinedOrSeparateClass);
P(JoinedAndSeparateClass);
#undef P
}
llvm::errs() << " Name:\"" << Name << '"';
if (Group) {
llvm::errs() << " Group:";
Group->dump();
}
if (Alias) {
llvm::errs() << " Alias:";
Alias->dump();
}
if (const MultiArgOption *MOA = dyn_cast<MultiArgOption>(this))
llvm::errs() << " NumArgs:" << MOA->getNumArgs();
llvm::errs() << ">\n";
}
bool Option::matches(OptSpecifier Opt) const {
// Aliases are never considered in matching, look through them.
if (Alias)
return Alias->matches(Opt);
// Check exact match.
if (ID == Opt)
return true;
if (Group)
return Group->matches(Opt);
return false;
}
OptionGroup::OptionGroup(OptSpecifier ID, const char *Name,
const OptionGroup *Group)
: Option(Option::GroupClass, ID, Name, Group, 0) {
}
Arg *OptionGroup::accept(const InputArgList &Args, unsigned &Index) const {
assert(0 && "accept() should never be called on an OptionGroup");
return 0;
}
InputOption::InputOption(OptSpecifier ID)
: Option(Option::InputClass, ID, "<input>", 0, 0) {
}
Arg *InputOption::accept(const InputArgList &Args, unsigned &Index) const {
assert(0 && "accept() should never be called on an InputOption");
return 0;
}
UnknownOption::UnknownOption(OptSpecifier ID)
: Option(Option::UnknownClass, ID, "<unknown>", 0, 0) {
}
Arg *UnknownOption::accept(const InputArgList &Args, unsigned &Index) const {
assert(0 && "accept() should never be called on an UnknownOption");
return 0;
}
FlagOption::FlagOption(OptSpecifier ID, const char *Name,
const OptionGroup *Group, const Option *Alias)
: Option(Option::FlagClass, ID, Name, Group, Alias) {
}
Arg *FlagOption::accept(const InputArgList &Args, unsigned &Index) const {
// Matches iff this is an exact match.
// FIXME: Avoid strlen.
if (strlen(getName()) != strlen(Args.getArgString(Index)))
return 0;
return new FlagArg(this, Index++);
}
JoinedOption::JoinedOption(OptSpecifier ID, const char *Name,
const OptionGroup *Group, const Option *Alias)
: Option(Option::JoinedClass, ID, Name, Group, Alias) {
}
Arg *JoinedOption::accept(const InputArgList &Args, unsigned &Index) const {
// Always matches.
return new JoinedArg(this, Index++);
}
CommaJoinedOption::CommaJoinedOption(OptSpecifier ID, const char *Name,
const OptionGroup *Group,
const Option *Alias)
: Option(Option::CommaJoinedClass, ID, Name, Group, Alias) {
}
Arg *CommaJoinedOption::accept(const InputArgList &Args,
unsigned &Index) const {
// Always matches. We count the commas now so we can answer
// getNumValues easily.
// Get the suffix string.
// FIXME: Avoid strlen, and move to helper method?
const char *Suffix = Args.getArgString(Index) + strlen(getName());
return new CommaJoinedArg(this, Index++, Suffix);
}
SeparateOption::SeparateOption(OptSpecifier ID, const char *Name,
const OptionGroup *Group, const Option *Alias)
: Option(Option::SeparateClass, ID, Name, Group, Alias) {
}
Arg *SeparateOption::accept(const InputArgList &Args, unsigned &Index) const {
// Matches iff this is an exact match.
// FIXME: Avoid strlen.
if (strlen(getName()) != strlen(Args.getArgString(Index)))
return 0;
Index += 2;
if (Index > Args.getNumInputArgStrings())
return 0;
return new SeparateArg(this, Index - 2, 1);
}
MultiArgOption::MultiArgOption(OptSpecifier ID, const char *Name,
const OptionGroup *Group, const Option *Alias,
unsigned _NumArgs)
: Option(Option::MultiArgClass, ID, Name, Group, Alias), NumArgs(_NumArgs) {
assert(NumArgs > 1 && "Invalid MultiArgOption!");
}
Arg *MultiArgOption::accept(const InputArgList &Args, unsigned &Index) const {
// Matches iff this is an exact match.
// FIXME: Avoid strlen.
if (strlen(getName()) != strlen(Args.getArgString(Index)))
return 0;
Index += 1 + NumArgs;
if (Index > Args.getNumInputArgStrings())
return 0;
return new SeparateArg(this, Index - 1 - NumArgs, NumArgs);
}
JoinedOrSeparateOption::JoinedOrSeparateOption(OptSpecifier ID, const char *Name,
const OptionGroup *Group,
const Option *Alias)
: Option(Option::JoinedOrSeparateClass, ID, Name, Group, Alias) {
}
Arg *JoinedOrSeparateOption::accept(const InputArgList &Args,
unsigned &Index) const {
// If this is not an exact match, it is a joined arg.
// FIXME: Avoid strlen.
if (strlen(getName()) != strlen(Args.getArgString(Index)))
return new JoinedArg(this, Index++);
// Otherwise it must be separate.
Index += 2;
if (Index > Args.getNumInputArgStrings())
return 0;
return new SeparateArg(this, Index - 2, 1);
}
JoinedAndSeparateOption::JoinedAndSeparateOption(OptSpecifier ID,
const char *Name,
const OptionGroup *Group,
const Option *Alias)
: Option(Option::JoinedAndSeparateClass, ID, Name, Group, Alias) {
}
Arg *JoinedAndSeparateOption::accept(const InputArgList &Args,
unsigned &Index) const {
// Always matches.
Index += 2;
if (Index > Args.getNumInputArgStrings())
return 0;
return new JoinedAndSeparateArg(this, Index - 2);
}
|
