1 //===--- ArgList.cpp - Argument List Management ---------------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #include "llvm/Option/ArgList.h"
11 #include "llvm/ADT/STLExtras.h"
12 #include "llvm/ADT/SmallString.h"
13 #include "llvm/ADT/Twine.h"
14 #include "llvm/Option/Arg.h"
15 #include "llvm/Option/Option.h"
16 #include "llvm/Support/raw_ostream.h"
17 
18 using namespace llvm;
19 using namespace llvm::opt;
20 
21 void arg_iterator::SkipToNextArg() {
22   for (; Current != Args.end(); ++Current) {
23     // Done if there are no filters.
24     if (!Id0.isValid())
25       break;
26 
27     // Otherwise require a match.
28     const Option &O = (*Current)->getOption();
29     if (O.matches(Id0) ||
30         (Id1.isValid() && O.matches(Id1)) ||
31         (Id2.isValid() && O.matches(Id2)))
32       break;
33   }
34 }
35 
36 ArgList::~ArgList() {
37 }
38 
39 void ArgList::append(Arg *A) {
40   Args.push_back(A);
41 }
42 
43 void ArgList::eraseArg(OptSpecifier Id) {
44   Args.erase(std::remove_if(begin(), end(),
45                             [=](Arg *A) { return A->getOption().matches(Id); }),
46              end());
47 }
48 
49 Arg *ArgList::getLastArgNoClaim(OptSpecifier Id) const {
50   // FIXME: Make search efficient?
51   for (const_reverse_iterator it = rbegin(), ie = rend(); it != ie; ++it)
52     if ((*it)->getOption().matches(Id))
53       return *it;
54   return nullptr;
55 }
56 
57 Arg *ArgList::getLastArgNoClaim(OptSpecifier Id0, OptSpecifier Id1) const {
58   // FIXME: Make search efficient?
59   for (const_reverse_iterator it = rbegin(), ie = rend(); it != ie; ++it)
60     if ((*it)->getOption().matches(Id0) ||
61         (*it)->getOption().matches(Id1))
62       return *it;
63   return nullptr;
64 }
65 
66 Arg *ArgList::getLastArg(OptSpecifier Id) const {
67   Arg *Res = nullptr;
68   for (const_iterator it = begin(), ie = end(); it != ie; ++it) {
69     if ((*it)->getOption().matches(Id)) {
70       Res = *it;
71       Res->claim();
72     }
73   }
74 
75   return Res;
76 }
77 
78 Arg *ArgList::getLastArg(OptSpecifier Id0, OptSpecifier Id1) const {
79   Arg *Res = nullptr;
80   for (const_iterator it = begin(), ie = end(); it != ie; ++it) {
81     if ((*it)->getOption().matches(Id0) ||
82         (*it)->getOption().matches(Id1)) {
83       Res = *it;
84       Res->claim();
85 
86     }
87   }
88 
89   return Res;
90 }
91 
92 Arg *ArgList::getLastArg(OptSpecifier Id0, OptSpecifier Id1,
93                          OptSpecifier Id2) const {
94   Arg *Res = nullptr;
95   for (const_iterator it = begin(), ie = end(); it != ie; ++it) {
96     if ((*it)->getOption().matches(Id0) ||
97         (*it)->getOption().matches(Id1) ||
98         (*it)->getOption().matches(Id2)) {
99       Res = *it;
100       Res->claim();
101     }
102   }
103 
104   return Res;
105 }
106 
107 Arg *ArgList::getLastArg(OptSpecifier Id0, OptSpecifier Id1,
108                          OptSpecifier Id2, OptSpecifier Id3) const {
109   Arg *Res = nullptr;
110   for (const_iterator it = begin(), ie = end(); it != ie; ++it) {
111     if ((*it)->getOption().matches(Id0) ||
112         (*it)->getOption().matches(Id1) ||
113         (*it)->getOption().matches(Id2) ||
114         (*it)->getOption().matches(Id3)) {
115       Res = *it;
116       Res->claim();
117     }
118   }
119 
120   return Res;
121 }
122 
123 Arg *ArgList::getLastArg(OptSpecifier Id0, OptSpecifier Id1,
124                          OptSpecifier Id2, OptSpecifier Id3,
125                          OptSpecifier Id4) const {
126   Arg *Res = nullptr;
127   for (const_iterator it = begin(), ie = end(); it != ie; ++it) {
128     if ((*it)->getOption().matches(Id0) ||
129         (*it)->getOption().matches(Id1) ||
130         (*it)->getOption().matches(Id2) ||
131         (*it)->getOption().matches(Id3) ||
132         (*it)->getOption().matches(Id4)) {
133       Res = *it;
134       Res->claim();
135     }
136   }
137 
138   return Res;
139 }
140 
141 Arg *ArgList::getLastArg(OptSpecifier Id0, OptSpecifier Id1,
142                          OptSpecifier Id2, OptSpecifier Id3,
143                          OptSpecifier Id4, OptSpecifier Id5) const {
144   Arg *Res = nullptr;
145   for (const_iterator it = begin(), ie = end(); it != ie; ++it) {
146     if ((*it)->getOption().matches(Id0) ||
147         (*it)->getOption().matches(Id1) ||
148         (*it)->getOption().matches(Id2) ||
149         (*it)->getOption().matches(Id3) ||
150         (*it)->getOption().matches(Id4) ||
151         (*it)->getOption().matches(Id5)) {
152       Res = *it;
153       Res->claim();
154     }
155   }
156 
157   return Res;
158 }
159 
160 Arg *ArgList::getLastArg(OptSpecifier Id0, OptSpecifier Id1,
161                          OptSpecifier Id2, OptSpecifier Id3,
162                          OptSpecifier Id4, OptSpecifier Id5,
163                          OptSpecifier Id6) const {
164   Arg *Res = nullptr;
165   for (const_iterator it = begin(), ie = end(); it != ie; ++it) {
166     if ((*it)->getOption().matches(Id0) ||
167         (*it)->getOption().matches(Id1) ||
168         (*it)->getOption().matches(Id2) ||
169         (*it)->getOption().matches(Id3) ||
170         (*it)->getOption().matches(Id4) ||
171         (*it)->getOption().matches(Id5) ||
172         (*it)->getOption().matches(Id6)) {
173       Res = *it;
174       Res->claim();
175     }
176   }
177 
178   return Res;
179 }
180 
181 Arg *ArgList::getLastArg(OptSpecifier Id0, OptSpecifier Id1,
182                          OptSpecifier Id2, OptSpecifier Id3,
183                          OptSpecifier Id4, OptSpecifier Id5,
184                          OptSpecifier Id6, OptSpecifier Id7) const {
185   Arg *Res = nullptr;
186   for (const_iterator it = begin(), ie = end(); it != ie; ++it) {
187     if ((*it)->getOption().matches(Id0) ||
188         (*it)->getOption().matches(Id1) ||
189         (*it)->getOption().matches(Id2) ||
190         (*it)->getOption().matches(Id3) ||
191         (*it)->getOption().matches(Id4) ||
192         (*it)->getOption().matches(Id5) ||
193         (*it)->getOption().matches(Id6) ||
194         (*it)->getOption().matches(Id7)) {
195       Res = *it;
196       Res->claim();
197     }
198   }
199 
200   return Res;
201 }
202 
203 bool ArgList::hasFlag(OptSpecifier Pos, OptSpecifier Neg, bool Default) const {
204   if (Arg *A = getLastArg(Pos, Neg))
205     return A->getOption().matches(Pos);
206   return Default;
207 }
208 
209 bool ArgList::hasFlag(OptSpecifier Pos, OptSpecifier PosAlias, OptSpecifier Neg,
210                       bool Default) const {
211   if (Arg *A = getLastArg(Pos, PosAlias, Neg))
212     return A->getOption().matches(Pos) || A->getOption().matches(PosAlias);
213   return Default;
214 }
215 
216 StringRef ArgList::getLastArgValue(OptSpecifier Id,
217                                          StringRef Default) const {
218   if (Arg *A = getLastArg(Id))
219     return A->getValue();
220   return Default;
221 }
222 
223 std::vector<std::string> ArgList::getAllArgValues(OptSpecifier Id) const {
224   SmallVector<const char *, 16> Values;
225   AddAllArgValues(Values, Id);
226   return std::vector<std::string>(Values.begin(), Values.end());
227 }
228 
229 void ArgList::AddLastArg(ArgStringList &Output, OptSpecifier Id) const {
230   if (Arg *A = getLastArg(Id)) {
231     A->claim();
232     A->render(*this, Output);
233   }
234 }
235 
236 void ArgList::AddLastArg(ArgStringList &Output, OptSpecifier Id0,
237                          OptSpecifier Id1) const {
238   if (Arg *A = getLastArg(Id0, Id1)) {
239     A->claim();
240     A->render(*this, Output);
241   }
242 }
243 
244 void ArgList::AddAllArgs(ArgStringList &Output, OptSpecifier Id0,
245                          OptSpecifier Id1, OptSpecifier Id2) const {
246   for (auto Arg: filtered(Id0, Id1, Id2)) {
247     Arg->claim();
248     Arg->render(*this, Output);
249   }
250 }
251 
252 void ArgList::AddAllArgValues(ArgStringList &Output, OptSpecifier Id0,
253                               OptSpecifier Id1, OptSpecifier Id2) const {
254   for (auto Arg : filtered(Id0, Id1, Id2)) {
255     Arg->claim();
256     const auto &Values = Arg->getValues();
257     Output.append(Values.begin(), Values.end());
258   }
259 }
260 
261 void ArgList::AddAllArgsTranslated(ArgStringList &Output, OptSpecifier Id0,
262                                    const char *Translation,
263                                    bool Joined) const {
264   for (auto Arg: filtered(Id0)) {
265     Arg->claim();
266 
267     if (Joined) {
268       Output.push_back(MakeArgString(StringRef(Translation) +
269                                      Arg->getValue(0)));
270     } else {
271       Output.push_back(Translation);
272       Output.push_back(Arg->getValue(0));
273     }
274   }
275 }
276 
277 void ArgList::ClaimAllArgs(OptSpecifier Id0) const {
278   for (auto Arg : filtered(Id0))
279     Arg->claim();
280 }
281 
282 void ArgList::ClaimAllArgs() const {
283   for (const_iterator it = begin(), ie = end(); it != ie; ++it)
284     if (!(*it)->isClaimed())
285       (*it)->claim();
286 }
287 
288 const char *ArgList::MakeArgString(const Twine &T) const {
289   SmallString<256> Str;
290   return MakeArgString(T.toStringRef(Str));
291 }
292 
293 const char *ArgList::GetOrMakeJoinedArgString(unsigned Index,
294                                               StringRef LHS,
295                                               StringRef RHS) const {
296   StringRef Cur = getArgString(Index);
297   if (Cur.size() == LHS.size() + RHS.size() &&
298       Cur.startswith(LHS) && Cur.endswith(RHS))
299     return Cur.data();
300 
301   return MakeArgString(LHS + RHS);
302 }
303 
304 //
305 
306 InputArgList::InputArgList(const char* const *ArgBegin,
307                            const char* const *ArgEnd)
308   : NumInputArgStrings(ArgEnd - ArgBegin) {
309   ArgStrings.append(ArgBegin, ArgEnd);
310 }
311 
312 InputArgList::~InputArgList() {
313   // An InputArgList always owns its arguments.
314   for (iterator it = begin(), ie = end(); it != ie; ++it)
315     delete *it;
316 }
317 
318 unsigned InputArgList::MakeIndex(StringRef String0) const {
319   unsigned Index = ArgStrings.size();
320 
321   // Tuck away so we have a reliable const char *.
322   SynthesizedStrings.push_back(String0);
323   ArgStrings.push_back(SynthesizedStrings.back().c_str());
324 
325   return Index;
326 }
327 
328 unsigned InputArgList::MakeIndex(StringRef String0,
329                                  StringRef String1) const {
330   unsigned Index0 = MakeIndex(String0);
331   unsigned Index1 = MakeIndex(String1);
332   assert(Index0 + 1 == Index1 && "Unexpected non-consecutive indices!");
333   (void) Index1;
334   return Index0;
335 }
336 
337 const char *InputArgList::MakeArgString(StringRef Str) const {
338   return getArgString(MakeIndex(Str));
339 }
340 
341 //
342 
343 DerivedArgList::DerivedArgList(const InputArgList &_BaseArgs)
344   : BaseArgs(_BaseArgs) {
345 }
346 
347 DerivedArgList::~DerivedArgList() {}
348 
349 const char *DerivedArgList::MakeArgString(StringRef Str) const {
350   return BaseArgs.MakeArgString(Str);
351 }
352 
353 void DerivedArgList::AddSynthesizedArg(Arg *A) {
354   SynthesizedArgs.push_back(std::unique_ptr<Arg>(A));
355 }
356 
357 Arg *DerivedArgList::MakeFlagArg(const Arg *BaseArg, const Option Opt) const {
358   SynthesizedArgs.push_back(
359       make_unique<Arg>(Opt, MakeArgString(Opt.getPrefix() + Opt.getName()),
360                        BaseArgs.MakeIndex(Opt.getName()), BaseArg));
361   return SynthesizedArgs.back().get();
362 }
363 
364 Arg *DerivedArgList::MakePositionalArg(const Arg *BaseArg, const Option Opt,
365                                        StringRef Value) const {
366   unsigned Index = BaseArgs.MakeIndex(Value);
367   SynthesizedArgs.push_back(
368       make_unique<Arg>(Opt, MakeArgString(Opt.getPrefix() + Opt.getName()),
369                        Index, BaseArgs.getArgString(Index), BaseArg));
370   return SynthesizedArgs.back().get();
371 }
372 
373 Arg *DerivedArgList::MakeSeparateArg(const Arg *BaseArg, const Option Opt,
374                                      StringRef Value) const {
375   unsigned Index = BaseArgs.MakeIndex(Opt.getName(), Value);
376   SynthesizedArgs.push_back(
377       make_unique<Arg>(Opt, MakeArgString(Opt.getPrefix() + Opt.getName()),
378                        Index, BaseArgs.getArgString(Index + 1), BaseArg));
379   return SynthesizedArgs.back().get();
380 }
381 
382 Arg *DerivedArgList::MakeJoinedArg(const Arg *BaseArg, const Option Opt,
383                                    StringRef Value) const {
384   unsigned Index = BaseArgs.MakeIndex(Opt.getName().str() + Value.str());
385   SynthesizedArgs.push_back(make_unique<Arg>(
386       Opt, MakeArgString(Opt.getPrefix() + Opt.getName()), Index,
387       BaseArgs.getArgString(Index) + Opt.getName().size(), BaseArg));
388   return SynthesizedArgs.back().get();
389 }
390