File: | lib/MC/MCParser/DarwinAsmParser.cpp |
Warning: | line 788, column 3 Use of memory after it is freed |
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1 | //===- DarwinAsmParser.cpp - Darwin (Mach-O) Assembly Parser --------------===// | |||
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/ADT/STLExtras.h" | |||
11 | #include "llvm/ADT/SmallVector.h" | |||
12 | #include "llvm/ADT/StringRef.h" | |||
13 | #include "llvm/ADT/StringSwitch.h" | |||
14 | #include "llvm/ADT/Triple.h" | |||
15 | #include "llvm/ADT/Twine.h" | |||
16 | #include "llvm/BinaryFormat/MachO.h" | |||
17 | #include "llvm/MC/MCContext.h" | |||
18 | #include "llvm/MC/MCDirectives.h" | |||
19 | #include "llvm/MC/MCObjectFileInfo.h" | |||
20 | #include "llvm/MC/MCParser/MCAsmLexer.h" | |||
21 | #include "llvm/MC/MCParser/MCAsmParser.h" | |||
22 | #include "llvm/MC/MCParser/MCAsmParserExtension.h" | |||
23 | #include "llvm/MC/MCSectionMachO.h" | |||
24 | #include "llvm/MC/MCStreamer.h" | |||
25 | #include "llvm/MC/MCSymbol.h" | |||
26 | #include "llvm/MC/SectionKind.h" | |||
27 | #include "llvm/Support/FileSystem.h" | |||
28 | #include "llvm/Support/MemoryBuffer.h" | |||
29 | #include "llvm/Support/SMLoc.h" | |||
30 | #include "llvm/Support/SourceMgr.h" | |||
31 | #include "llvm/Support/raw_ostream.h" | |||
32 | #include <algorithm> | |||
33 | #include <cstddef> | |||
34 | #include <cstdint> | |||
35 | #include <string> | |||
36 | #include <system_error> | |||
37 | #include <utility> | |||
38 | ||||
39 | using namespace llvm; | |||
40 | ||||
41 | namespace { | |||
42 | ||||
43 | /// \brief Implementation of directive handling which is shared across all | |||
44 | /// Darwin targets. | |||
45 | class DarwinAsmParser : public MCAsmParserExtension { | |||
46 | template<bool (DarwinAsmParser::*HandlerMethod)(StringRef, SMLoc)> | |||
47 | void addDirectiveHandler(StringRef Directive) { | |||
48 | MCAsmParser::ExtensionDirectiveHandler Handler = std::make_pair( | |||
49 | this, HandleDirective<DarwinAsmParser, HandlerMethod>); | |||
50 | getParser().addDirectiveHandler(Directive, Handler); | |||
51 | } | |||
52 | ||||
53 | bool parseSectionSwitch(StringRef Segment, StringRef Section, | |||
54 | unsigned TAA = 0, unsigned ImplicitAlign = 0, | |||
55 | unsigned StubSize = 0); | |||
56 | ||||
57 | SMLoc LastVersionDirective; | |||
58 | ||||
59 | public: | |||
60 | DarwinAsmParser() = default; | |||
61 | ||||
62 | void Initialize(MCAsmParser &Parser) override { | |||
63 | // Call the base implementation. | |||
64 | this->MCAsmParserExtension::Initialize(Parser); | |||
65 | ||||
66 | addDirectiveHandler<&DarwinAsmParser::parseDirectiveAltEntry>(".alt_entry"); | |||
67 | addDirectiveHandler<&DarwinAsmParser::parseDirectiveDesc>(".desc"); | |||
68 | addDirectiveHandler<&DarwinAsmParser::parseDirectiveIndirectSymbol>( | |||
69 | ".indirect_symbol"); | |||
70 | addDirectiveHandler<&DarwinAsmParser::parseDirectiveLsym>(".lsym"); | |||
71 | addDirectiveHandler<&DarwinAsmParser::parseDirectiveSubsectionsViaSymbols>( | |||
72 | ".subsections_via_symbols"); | |||
73 | addDirectiveHandler<&DarwinAsmParser::parseDirectiveDumpOrLoad>(".dump"); | |||
74 | addDirectiveHandler<&DarwinAsmParser::parseDirectiveDumpOrLoad>(".load"); | |||
75 | addDirectiveHandler<&DarwinAsmParser::parseDirectiveSection>(".section"); | |||
76 | addDirectiveHandler<&DarwinAsmParser::parseDirectivePushSection>( | |||
77 | ".pushsection"); | |||
78 | addDirectiveHandler<&DarwinAsmParser::parseDirectivePopSection>( | |||
79 | ".popsection"); | |||
80 | addDirectiveHandler<&DarwinAsmParser::parseDirectivePrevious>(".previous"); | |||
81 | addDirectiveHandler<&DarwinAsmParser::parseDirectiveSecureLogUnique>( | |||
82 | ".secure_log_unique"); | |||
83 | addDirectiveHandler<&DarwinAsmParser::parseDirectiveSecureLogReset>( | |||
84 | ".secure_log_reset"); | |||
85 | addDirectiveHandler<&DarwinAsmParser::parseDirectiveTBSS>(".tbss"); | |||
86 | addDirectiveHandler<&DarwinAsmParser::parseDirectiveZerofill>(".zerofill"); | |||
87 | ||||
88 | addDirectiveHandler<&DarwinAsmParser::parseDirectiveDataRegion>( | |||
89 | ".data_region"); | |||
90 | addDirectiveHandler<&DarwinAsmParser::parseDirectiveDataRegionEnd>( | |||
91 | ".end_data_region"); | |||
92 | ||||
93 | // Special section directives. | |||
94 | addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveBss>(".bss"); | |||
95 | addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveConst>(".const"); | |||
96 | addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveConstData>( | |||
97 | ".const_data"); | |||
98 | addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveConstructor>( | |||
99 | ".constructor"); | |||
100 | addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveCString>( | |||
101 | ".cstring"); | |||
102 | addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveData>(".data"); | |||
103 | addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveDestructor>( | |||
104 | ".destructor"); | |||
105 | addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveDyld>(".dyld"); | |||
106 | addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveFVMLibInit0>( | |||
107 | ".fvmlib_init0"); | |||
108 | addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveFVMLibInit1>( | |||
109 | ".fvmlib_init1"); | |||
110 | addDirectiveHandler< | |||
111 | &DarwinAsmParser::parseSectionDirectiveLazySymbolPointers>( | |||
112 | ".lazy_symbol_pointer"); | |||
113 | addDirectiveHandler<&DarwinAsmParser::parseDirectiveLinkerOption>( | |||
114 | ".linker_option"); | |||
115 | addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveLiteral16>( | |||
116 | ".literal16"); | |||
117 | addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveLiteral4>( | |||
118 | ".literal4"); | |||
119 | addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveLiteral8>( | |||
120 | ".literal8"); | |||
121 | addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveModInitFunc>( | |||
122 | ".mod_init_func"); | |||
123 | addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveModTermFunc>( | |||
124 | ".mod_term_func"); | |||
125 | addDirectiveHandler< | |||
126 | &DarwinAsmParser::parseSectionDirectiveNonLazySymbolPointers>( | |||
127 | ".non_lazy_symbol_pointer"); | |||
128 | addDirectiveHandler< | |||
129 | &DarwinAsmParser::parseSectionDirectiveThreadLocalVariablePointers>( | |||
130 | ".thread_local_variable_pointer"); | |||
131 | addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCCatClsMeth>( | |||
132 | ".objc_cat_cls_meth"); | |||
133 | addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCCatInstMeth>( | |||
134 | ".objc_cat_inst_meth"); | |||
135 | addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCCategory>( | |||
136 | ".objc_category"); | |||
137 | addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCClass>( | |||
138 | ".objc_class"); | |||
139 | addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCClassNames>( | |||
140 | ".objc_class_names"); | |||
141 | addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCClassVars>( | |||
142 | ".objc_class_vars"); | |||
143 | addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCClsMeth>( | |||
144 | ".objc_cls_meth"); | |||
145 | addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCClsRefs>( | |||
146 | ".objc_cls_refs"); | |||
147 | addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCInstMeth>( | |||
148 | ".objc_inst_meth"); | |||
149 | addDirectiveHandler< | |||
150 | &DarwinAsmParser::parseSectionDirectiveObjCInstanceVars>( | |||
151 | ".objc_instance_vars"); | |||
152 | addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCMessageRefs>( | |||
153 | ".objc_message_refs"); | |||
154 | addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCMetaClass>( | |||
155 | ".objc_meta_class"); | |||
156 | addDirectiveHandler< | |||
157 | &DarwinAsmParser::parseSectionDirectiveObjCMethVarNames>( | |||
158 | ".objc_meth_var_names"); | |||
159 | addDirectiveHandler< | |||
160 | &DarwinAsmParser::parseSectionDirectiveObjCMethVarTypes>( | |||
161 | ".objc_meth_var_types"); | |||
162 | addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCModuleInfo>( | |||
163 | ".objc_module_info"); | |||
164 | addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCProtocol>( | |||
165 | ".objc_protocol"); | |||
166 | addDirectiveHandler< | |||
167 | &DarwinAsmParser::parseSectionDirectiveObjCSelectorStrs>( | |||
168 | ".objc_selector_strs"); | |||
169 | addDirectiveHandler< | |||
170 | &DarwinAsmParser::parseSectionDirectiveObjCStringObject>( | |||
171 | ".objc_string_object"); | |||
172 | addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCSymbols>( | |||
173 | ".objc_symbols"); | |||
174 | addDirectiveHandler<&DarwinAsmParser::parseSectionDirectivePICSymbolStub>( | |||
175 | ".picsymbol_stub"); | |||
176 | addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveStaticConst>( | |||
177 | ".static_const"); | |||
178 | addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveStaticData>( | |||
179 | ".static_data"); | |||
180 | addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveSymbolStub>( | |||
181 | ".symbol_stub"); | |||
182 | addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveTData>(".tdata"); | |||
183 | addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveText>(".text"); | |||
184 | addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveThreadInitFunc>( | |||
185 | ".thread_init_func"); | |||
186 | addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveTLV>(".tlv"); | |||
187 | ||||
188 | addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveIdent>(".ident"); | |||
189 | addDirectiveHandler<&DarwinAsmParser::parseWatchOSVersionMin>( | |||
190 | ".watchos_version_min"); | |||
191 | addDirectiveHandler<&DarwinAsmParser::parseTvOSVersionMin>( | |||
192 | ".tvos_version_min"); | |||
193 | addDirectiveHandler<&DarwinAsmParser::parseIOSVersionMin>( | |||
194 | ".ios_version_min"); | |||
195 | addDirectiveHandler<&DarwinAsmParser::parseMacOSXVersionMin>( | |||
196 | ".macosx_version_min"); | |||
197 | addDirectiveHandler<&DarwinAsmParser::parseBuildVersion>(".build_version"); | |||
198 | ||||
199 | LastVersionDirective = SMLoc(); | |||
200 | } | |||
201 | ||||
202 | bool parseDirectiveAltEntry(StringRef, SMLoc); | |||
203 | bool parseDirectiveDesc(StringRef, SMLoc); | |||
204 | bool parseDirectiveIndirectSymbol(StringRef, SMLoc); | |||
205 | bool parseDirectiveDumpOrLoad(StringRef, SMLoc); | |||
206 | bool parseDirectiveLsym(StringRef, SMLoc); | |||
207 | bool parseDirectiveLinkerOption(StringRef, SMLoc); | |||
208 | bool parseDirectiveSection(StringRef, SMLoc); | |||
209 | bool parseDirectivePushSection(StringRef, SMLoc); | |||
210 | bool parseDirectivePopSection(StringRef, SMLoc); | |||
211 | bool parseDirectivePrevious(StringRef, SMLoc); | |||
212 | bool parseDirectiveSecureLogReset(StringRef, SMLoc); | |||
213 | bool parseDirectiveSecureLogUnique(StringRef, SMLoc); | |||
214 | bool parseDirectiveSubsectionsViaSymbols(StringRef, SMLoc); | |||
215 | bool parseDirectiveTBSS(StringRef, SMLoc); | |||
216 | bool parseDirectiveZerofill(StringRef, SMLoc); | |||
217 | bool parseDirectiveDataRegion(StringRef, SMLoc); | |||
218 | bool parseDirectiveDataRegionEnd(StringRef, SMLoc); | |||
219 | ||||
220 | // Named Section Directive | |||
221 | bool parseSectionDirectiveBss(StringRef, SMLoc) { | |||
222 | return parseSectionSwitch("__DATA", "__bss"); | |||
223 | } | |||
224 | ||||
225 | bool parseSectionDirectiveConst(StringRef, SMLoc) { | |||
226 | return parseSectionSwitch("__TEXT", "__const"); | |||
227 | } | |||
228 | ||||
229 | bool parseSectionDirectiveStaticConst(StringRef, SMLoc) { | |||
230 | return parseSectionSwitch("__TEXT", "__static_const"); | |||
231 | } | |||
232 | ||||
233 | bool parseSectionDirectiveCString(StringRef, SMLoc) { | |||
234 | return parseSectionSwitch("__TEXT","__cstring", | |||
235 | MachO::S_CSTRING_LITERALS); | |||
236 | } | |||
237 | ||||
238 | bool parseSectionDirectiveLiteral4(StringRef, SMLoc) { | |||
239 | return parseSectionSwitch("__TEXT", "__literal4", | |||
240 | MachO::S_4BYTE_LITERALS, 4); | |||
241 | } | |||
242 | ||||
243 | bool parseSectionDirectiveLiteral8(StringRef, SMLoc) { | |||
244 | return parseSectionSwitch("__TEXT", "__literal8", | |||
245 | MachO::S_8BYTE_LITERALS, 8); | |||
246 | } | |||
247 | ||||
248 | bool parseSectionDirectiveLiteral16(StringRef, SMLoc) { | |||
249 | return parseSectionSwitch("__TEXT","__literal16", | |||
250 | MachO::S_16BYTE_LITERALS, 16); | |||
251 | } | |||
252 | ||||
253 | bool parseSectionDirectiveConstructor(StringRef, SMLoc) { | |||
254 | return parseSectionSwitch("__TEXT","__constructor"); | |||
255 | } | |||
256 | ||||
257 | bool parseSectionDirectiveDestructor(StringRef, SMLoc) { | |||
258 | return parseSectionSwitch("__TEXT","__destructor"); | |||
259 | } | |||
260 | ||||
261 | bool parseSectionDirectiveFVMLibInit0(StringRef, SMLoc) { | |||
262 | return parseSectionSwitch("__TEXT","__fvmlib_init0"); | |||
263 | } | |||
264 | ||||
265 | bool parseSectionDirectiveFVMLibInit1(StringRef, SMLoc) { | |||
266 | return parseSectionSwitch("__TEXT","__fvmlib_init1"); | |||
267 | } | |||
268 | ||||
269 | bool parseSectionDirectiveSymbolStub(StringRef, SMLoc) { | |||
270 | return parseSectionSwitch("__TEXT","__symbol_stub", | |||
271 | MachO::S_SYMBOL_STUBS | | |||
272 | MachO::S_ATTR_PURE_INSTRUCTIONS, | |||
273 | // FIXME: Different on PPC and ARM. | |||
274 | 0, 16); | |||
275 | } | |||
276 | ||||
277 | bool parseSectionDirectivePICSymbolStub(StringRef, SMLoc) { | |||
278 | return parseSectionSwitch("__TEXT","__picsymbol_stub", | |||
279 | MachO::S_SYMBOL_STUBS | | |||
280 | MachO::S_ATTR_PURE_INSTRUCTIONS, 0, 26); | |||
281 | } | |||
282 | ||||
283 | bool parseSectionDirectiveData(StringRef, SMLoc) { | |||
284 | return parseSectionSwitch("__DATA", "__data"); | |||
285 | } | |||
286 | ||||
287 | bool parseSectionDirectiveStaticData(StringRef, SMLoc) { | |||
288 | return parseSectionSwitch("__DATA", "__static_data"); | |||
289 | } | |||
290 | ||||
291 | bool parseSectionDirectiveNonLazySymbolPointers(StringRef, SMLoc) { | |||
292 | return parseSectionSwitch("__DATA", "__nl_symbol_ptr", | |||
293 | MachO::S_NON_LAZY_SYMBOL_POINTERS, 4); | |||
294 | } | |||
295 | ||||
296 | bool parseSectionDirectiveLazySymbolPointers(StringRef, SMLoc) { | |||
297 | return parseSectionSwitch("__DATA", "__la_symbol_ptr", | |||
298 | MachO::S_LAZY_SYMBOL_POINTERS, 4); | |||
299 | } | |||
300 | ||||
301 | bool parseSectionDirectiveThreadLocalVariablePointers(StringRef, SMLoc) { | |||
302 | return parseSectionSwitch("__DATA", "__thread_ptr", | |||
303 | MachO::S_THREAD_LOCAL_VARIABLE_POINTERS, 4); | |||
304 | } | |||
305 | ||||
306 | bool parseSectionDirectiveDyld(StringRef, SMLoc) { | |||
307 | return parseSectionSwitch("__DATA", "__dyld"); | |||
308 | } | |||
309 | ||||
310 | bool parseSectionDirectiveModInitFunc(StringRef, SMLoc) { | |||
311 | return parseSectionSwitch("__DATA", "__mod_init_func", | |||
312 | MachO::S_MOD_INIT_FUNC_POINTERS, 4); | |||
313 | } | |||
314 | ||||
315 | bool parseSectionDirectiveModTermFunc(StringRef, SMLoc) { | |||
316 | return parseSectionSwitch("__DATA", "__mod_term_func", | |||
317 | MachO::S_MOD_TERM_FUNC_POINTERS, 4); | |||
318 | } | |||
319 | ||||
320 | bool parseSectionDirectiveConstData(StringRef, SMLoc) { | |||
321 | return parseSectionSwitch("__DATA", "__const"); | |||
322 | } | |||
323 | ||||
324 | bool parseSectionDirectiveObjCClass(StringRef, SMLoc) { | |||
325 | return parseSectionSwitch("__OBJC", "__class", | |||
326 | MachO::S_ATTR_NO_DEAD_STRIP); | |||
327 | } | |||
328 | ||||
329 | bool parseSectionDirectiveObjCMetaClass(StringRef, SMLoc) { | |||
330 | return parseSectionSwitch("__OBJC", "__meta_class", | |||
331 | MachO::S_ATTR_NO_DEAD_STRIP); | |||
332 | } | |||
333 | ||||
334 | bool parseSectionDirectiveObjCCatClsMeth(StringRef, SMLoc) { | |||
335 | return parseSectionSwitch("__OBJC", "__cat_cls_meth", | |||
336 | MachO::S_ATTR_NO_DEAD_STRIP); | |||
337 | } | |||
338 | ||||
339 | bool parseSectionDirectiveObjCCatInstMeth(StringRef, SMLoc) { | |||
340 | return parseSectionSwitch("__OBJC", "__cat_inst_meth", | |||
341 | MachO::S_ATTR_NO_DEAD_STRIP); | |||
342 | } | |||
343 | ||||
344 | bool parseSectionDirectiveObjCProtocol(StringRef, SMLoc) { | |||
345 | return parseSectionSwitch("__OBJC", "__protocol", | |||
346 | MachO::S_ATTR_NO_DEAD_STRIP); | |||
347 | } | |||
348 | ||||
349 | bool parseSectionDirectiveObjCStringObject(StringRef, SMLoc) { | |||
350 | return parseSectionSwitch("__OBJC", "__string_object", | |||
351 | MachO::S_ATTR_NO_DEAD_STRIP); | |||
352 | } | |||
353 | ||||
354 | bool parseSectionDirectiveObjCClsMeth(StringRef, SMLoc) { | |||
355 | return parseSectionSwitch("__OBJC", "__cls_meth", | |||
356 | MachO::S_ATTR_NO_DEAD_STRIP); | |||
357 | } | |||
358 | ||||
359 | bool parseSectionDirectiveObjCInstMeth(StringRef, SMLoc) { | |||
360 | return parseSectionSwitch("__OBJC", "__inst_meth", | |||
361 | MachO::S_ATTR_NO_DEAD_STRIP); | |||
362 | } | |||
363 | ||||
364 | bool parseSectionDirectiveObjCClsRefs(StringRef, SMLoc) { | |||
365 | return parseSectionSwitch("__OBJC", "__cls_refs", | |||
366 | MachO::S_ATTR_NO_DEAD_STRIP | | |||
367 | MachO::S_LITERAL_POINTERS, 4); | |||
368 | } | |||
369 | ||||
370 | bool parseSectionDirectiveObjCMessageRefs(StringRef, SMLoc) { | |||
371 | return parseSectionSwitch("__OBJC", "__message_refs", | |||
372 | MachO::S_ATTR_NO_DEAD_STRIP | | |||
373 | MachO::S_LITERAL_POINTERS, 4); | |||
374 | } | |||
375 | ||||
376 | bool parseSectionDirectiveObjCSymbols(StringRef, SMLoc) { | |||
377 | return parseSectionSwitch("__OBJC", "__symbols", | |||
378 | MachO::S_ATTR_NO_DEAD_STRIP); | |||
379 | } | |||
380 | ||||
381 | bool parseSectionDirectiveObjCCategory(StringRef, SMLoc) { | |||
382 | return parseSectionSwitch("__OBJC", "__category", | |||
383 | MachO::S_ATTR_NO_DEAD_STRIP); | |||
384 | } | |||
385 | ||||
386 | bool parseSectionDirectiveObjCClassVars(StringRef, SMLoc) { | |||
387 | return parseSectionSwitch("__OBJC", "__class_vars", | |||
388 | MachO::S_ATTR_NO_DEAD_STRIP); | |||
389 | } | |||
390 | ||||
391 | bool parseSectionDirectiveObjCInstanceVars(StringRef, SMLoc) { | |||
392 | return parseSectionSwitch("__OBJC", "__instance_vars", | |||
393 | MachO::S_ATTR_NO_DEAD_STRIP); | |||
394 | } | |||
395 | ||||
396 | bool parseSectionDirectiveObjCModuleInfo(StringRef, SMLoc) { | |||
397 | return parseSectionSwitch("__OBJC", "__module_info", | |||
398 | MachO::S_ATTR_NO_DEAD_STRIP); | |||
399 | } | |||
400 | ||||
401 | bool parseSectionDirectiveObjCClassNames(StringRef, SMLoc) { | |||
402 | return parseSectionSwitch("__TEXT", "__cstring", | |||
403 | MachO::S_CSTRING_LITERALS); | |||
404 | } | |||
405 | ||||
406 | bool parseSectionDirectiveObjCMethVarTypes(StringRef, SMLoc) { | |||
407 | return parseSectionSwitch("__TEXT", "__cstring", | |||
408 | MachO::S_CSTRING_LITERALS); | |||
409 | } | |||
410 | ||||
411 | bool parseSectionDirectiveObjCMethVarNames(StringRef, SMLoc) { | |||
412 | return parseSectionSwitch("__TEXT", "__cstring", | |||
413 | MachO::S_CSTRING_LITERALS); | |||
414 | } | |||
415 | ||||
416 | bool parseSectionDirectiveObjCSelectorStrs(StringRef, SMLoc) { | |||
417 | return parseSectionSwitch("__OBJC", "__selector_strs", | |||
418 | MachO::S_CSTRING_LITERALS); | |||
419 | } | |||
420 | ||||
421 | bool parseSectionDirectiveTData(StringRef, SMLoc) { | |||
422 | return parseSectionSwitch("__DATA", "__thread_data", | |||
423 | MachO::S_THREAD_LOCAL_REGULAR); | |||
424 | } | |||
425 | ||||
426 | bool parseSectionDirectiveText(StringRef, SMLoc) { | |||
427 | return parseSectionSwitch("__TEXT", "__text", | |||
428 | MachO::S_ATTR_PURE_INSTRUCTIONS); | |||
429 | } | |||
430 | ||||
431 | bool parseSectionDirectiveTLV(StringRef, SMLoc) { | |||
432 | return parseSectionSwitch("__DATA", "__thread_vars", | |||
433 | MachO::S_THREAD_LOCAL_VARIABLES); | |||
434 | } | |||
435 | ||||
436 | bool parseSectionDirectiveIdent(StringRef, SMLoc) { | |||
437 | // Darwin silently ignores the .ident directive. | |||
438 | getParser().eatToEndOfStatement(); | |||
439 | return false; | |||
440 | } | |||
441 | ||||
442 | bool parseSectionDirectiveThreadInitFunc(StringRef, SMLoc) { | |||
443 | return parseSectionSwitch("__DATA", "__thread_init", | |||
444 | MachO::S_THREAD_LOCAL_INIT_FUNCTION_POINTERS); | |||
445 | } | |||
446 | ||||
447 | bool parseWatchOSVersionMin(StringRef Directive, SMLoc Loc) { | |||
448 | return parseVersionMin(Directive, Loc, MCVM_WatchOSVersionMin); | |||
449 | } | |||
450 | bool parseTvOSVersionMin(StringRef Directive, SMLoc Loc) { | |||
451 | return parseVersionMin(Directive, Loc, MCVM_TvOSVersionMin); | |||
452 | } | |||
453 | bool parseIOSVersionMin(StringRef Directive, SMLoc Loc) { | |||
454 | return parseVersionMin(Directive, Loc, MCVM_IOSVersionMin); | |||
455 | } | |||
456 | bool parseMacOSXVersionMin(StringRef Directive, SMLoc Loc) { | |||
457 | return parseVersionMin(Directive, Loc, MCVM_OSXVersionMin); | |||
458 | } | |||
459 | ||||
460 | bool parseBuildVersion(StringRef Directive, SMLoc Loc); | |||
461 | bool parseVersionMin(StringRef Directive, SMLoc Loc, MCVersionMinType Type); | |||
462 | bool parseVersion(unsigned *Major, unsigned *Minor, unsigned *Update); | |||
463 | void checkVersion(StringRef Directive, StringRef Arg, SMLoc Loc, | |||
464 | Triple::OSType ExpectedOS); | |||
465 | }; | |||
466 | ||||
467 | } // end anonymous namespace | |||
468 | ||||
469 | bool DarwinAsmParser::parseSectionSwitch(StringRef Segment, StringRef Section, | |||
470 | unsigned TAA, unsigned Align, | |||
471 | unsigned StubSize) { | |||
472 | if (getLexer().isNot(AsmToken::EndOfStatement)) | |||
473 | return TokError("unexpected token in section switching directive"); | |||
474 | Lex(); | |||
475 | ||||
476 | // FIXME: Arch specific. | |||
477 | bool isText = TAA & MachO::S_ATTR_PURE_INSTRUCTIONS; | |||
478 | getStreamer().SwitchSection(getContext().getMachOSection( | |||
479 | Segment, Section, TAA, StubSize, | |||
480 | isText ? SectionKind::getText() : SectionKind::getData())); | |||
481 | ||||
482 | // Set the implicit alignment, if any. | |||
483 | // | |||
484 | // FIXME: This isn't really what 'as' does; I think it just uses the implicit | |||
485 | // alignment on the section (e.g., if one manually inserts bytes into the | |||
486 | // section, then just issuing the section switch directive will not realign | |||
487 | // the section. However, this is arguably more reasonable behavior, and there | |||
488 | // is no good reason for someone to intentionally emit incorrectly sized | |||
489 | // values into the implicitly aligned sections. | |||
490 | if (Align) | |||
491 | getStreamer().EmitValueToAlignment(Align); | |||
492 | ||||
493 | return false; | |||
494 | } | |||
495 | ||||
496 | /// parseDirectiveAltEntry | |||
497 | /// ::= .alt_entry identifier | |||
498 | bool DarwinAsmParser::parseDirectiveAltEntry(StringRef, SMLoc) { | |||
499 | StringRef Name; | |||
500 | if (getParser().parseIdentifier(Name)) | |||
501 | return TokError("expected identifier in directive"); | |||
502 | ||||
503 | // Look up symbol. | |||
504 | MCSymbol *Sym = getContext().getOrCreateSymbol(Name); | |||
505 | ||||
506 | if (Sym->isDefined()) | |||
507 | return TokError(".alt_entry must preceed symbol definition"); | |||
508 | ||||
509 | if (!getStreamer().EmitSymbolAttribute(Sym, MCSA_AltEntry)) | |||
510 | return TokError("unable to emit symbol attribute"); | |||
511 | ||||
512 | Lex(); | |||
513 | return false; | |||
514 | } | |||
515 | ||||
516 | /// parseDirectiveDesc | |||
517 | /// ::= .desc identifier , expression | |||
518 | bool DarwinAsmParser::parseDirectiveDesc(StringRef, SMLoc) { | |||
519 | StringRef Name; | |||
520 | if (getParser().parseIdentifier(Name)) | |||
521 | return TokError("expected identifier in directive"); | |||
522 | ||||
523 | // Handle the identifier as the key symbol. | |||
524 | MCSymbol *Sym = getContext().getOrCreateSymbol(Name); | |||
525 | ||||
526 | if (getLexer().isNot(AsmToken::Comma)) | |||
527 | return TokError("unexpected token in '.desc' directive"); | |||
528 | Lex(); | |||
529 | ||||
530 | int64_t DescValue; | |||
531 | if (getParser().parseAbsoluteExpression(DescValue)) | |||
532 | return true; | |||
533 | ||||
534 | if (getLexer().isNot(AsmToken::EndOfStatement)) | |||
535 | return TokError("unexpected token in '.desc' directive"); | |||
536 | ||||
537 | Lex(); | |||
538 | ||||
539 | // Set the n_desc field of this Symbol to this DescValue | |||
540 | getStreamer().EmitSymbolDesc(Sym, DescValue); | |||
541 | ||||
542 | return false; | |||
543 | } | |||
544 | ||||
545 | /// parseDirectiveIndirectSymbol | |||
546 | /// ::= .indirect_symbol identifier | |||
547 | bool DarwinAsmParser::parseDirectiveIndirectSymbol(StringRef, SMLoc Loc) { | |||
548 | const MCSectionMachO *Current = static_cast<const MCSectionMachO *>( | |||
549 | getStreamer().getCurrentSectionOnly()); | |||
550 | MachO::SectionType SectionType = Current->getType(); | |||
551 | if (SectionType != MachO::S_NON_LAZY_SYMBOL_POINTERS && | |||
552 | SectionType != MachO::S_LAZY_SYMBOL_POINTERS && | |||
553 | SectionType != MachO::S_THREAD_LOCAL_VARIABLE_POINTERS && | |||
554 | SectionType != MachO::S_SYMBOL_STUBS) | |||
555 | return Error(Loc, "indirect symbol not in a symbol pointer or stub " | |||
556 | "section"); | |||
557 | ||||
558 | StringRef Name; | |||
559 | if (getParser().parseIdentifier(Name)) | |||
560 | return TokError("expected identifier in .indirect_symbol directive"); | |||
561 | ||||
562 | MCSymbol *Sym = getContext().getOrCreateSymbol(Name); | |||
563 | ||||
564 | // Assembler local symbols don't make any sense here. Complain loudly. | |||
565 | if (Sym->isTemporary()) | |||
566 | return TokError("non-local symbol required in directive"); | |||
567 | ||||
568 | if (!getStreamer().EmitSymbolAttribute(Sym, MCSA_IndirectSymbol)) | |||
569 | return TokError("unable to emit indirect symbol attribute for: " + Name); | |||
570 | ||||
571 | if (getLexer().isNot(AsmToken::EndOfStatement)) | |||
572 | return TokError("unexpected token in '.indirect_symbol' directive"); | |||
573 | ||||
574 | Lex(); | |||
575 | ||||
576 | return false; | |||
577 | } | |||
578 | ||||
579 | /// parseDirectiveDumpOrLoad | |||
580 | /// ::= ( .dump | .load ) "filename" | |||
581 | bool DarwinAsmParser::parseDirectiveDumpOrLoad(StringRef Directive, | |||
582 | SMLoc IDLoc) { | |||
583 | bool IsDump = Directive == ".dump"; | |||
584 | if (getLexer().isNot(AsmToken::String)) | |||
585 | return TokError("expected string in '.dump' or '.load' directive"); | |||
586 | ||||
587 | Lex(); | |||
588 | ||||
589 | if (getLexer().isNot(AsmToken::EndOfStatement)) | |||
590 | return TokError("unexpected token in '.dump' or '.load' directive"); | |||
591 | ||||
592 | Lex(); | |||
593 | ||||
594 | // FIXME: If/when .dump and .load are implemented they will be done in the | |||
595 | // the assembly parser and not have any need for an MCStreamer API. | |||
596 | if (IsDump) | |||
597 | return Warning(IDLoc, "ignoring directive .dump for now"); | |||
598 | else | |||
599 | return Warning(IDLoc, "ignoring directive .load for now"); | |||
600 | } | |||
601 | ||||
602 | /// ParseDirectiveLinkerOption | |||
603 | /// ::= .linker_option "string" ( , "string" )* | |||
604 | bool DarwinAsmParser::parseDirectiveLinkerOption(StringRef IDVal, SMLoc) { | |||
605 | SmallVector<std::string, 4> Args; | |||
606 | while (true) { | |||
607 | if (getLexer().isNot(AsmToken::String)) | |||
608 | return TokError("expected string in '" + Twine(IDVal) + "' directive"); | |||
609 | ||||
610 | std::string Data; | |||
611 | if (getParser().parseEscapedString(Data)) | |||
612 | return true; | |||
613 | ||||
614 | Args.push_back(Data); | |||
615 | ||||
616 | if (getLexer().is(AsmToken::EndOfStatement)) | |||
617 | break; | |||
618 | ||||
619 | if (getLexer().isNot(AsmToken::Comma)) | |||
620 | return TokError("unexpected token in '" + Twine(IDVal) + "' directive"); | |||
621 | Lex(); | |||
622 | } | |||
623 | ||||
624 | getStreamer().EmitLinkerOptions(Args); | |||
625 | return false; | |||
626 | } | |||
627 | ||||
628 | /// parseDirectiveLsym | |||
629 | /// ::= .lsym identifier , expression | |||
630 | bool DarwinAsmParser::parseDirectiveLsym(StringRef, SMLoc) { | |||
631 | StringRef Name; | |||
632 | if (getParser().parseIdentifier(Name)) | |||
633 | return TokError("expected identifier in directive"); | |||
634 | ||||
635 | // Handle the identifier as the key symbol. | |||
636 | MCSymbol *Sym = getContext().getOrCreateSymbol(Name); | |||
637 | ||||
638 | if (getLexer().isNot(AsmToken::Comma)) | |||
639 | return TokError("unexpected token in '.lsym' directive"); | |||
640 | Lex(); | |||
641 | ||||
642 | const MCExpr *Value; | |||
643 | if (getParser().parseExpression(Value)) | |||
644 | return true; | |||
645 | ||||
646 | if (getLexer().isNot(AsmToken::EndOfStatement)) | |||
647 | return TokError("unexpected token in '.lsym' directive"); | |||
648 | ||||
649 | Lex(); | |||
650 | ||||
651 | // We don't currently support this directive. | |||
652 | // | |||
653 | // FIXME: Diagnostic location! | |||
654 | (void) Sym; | |||
655 | return TokError("directive '.lsym' is unsupported"); | |||
656 | } | |||
657 | ||||
658 | /// parseDirectiveSection: | |||
659 | /// ::= .section identifier (',' identifier)* | |||
660 | bool DarwinAsmParser::parseDirectiveSection(StringRef, SMLoc) { | |||
661 | SMLoc Loc = getLexer().getLoc(); | |||
662 | ||||
663 | StringRef SectionName; | |||
664 | if (getParser().parseIdentifier(SectionName)) | |||
665 | return Error(Loc, "expected identifier after '.section' directive"); | |||
666 | ||||
667 | // Verify there is a following comma. | |||
668 | if (!getLexer().is(AsmToken::Comma)) | |||
669 | return TokError("unexpected token in '.section' directive"); | |||
670 | ||||
671 | std::string SectionSpec = SectionName; | |||
672 | SectionSpec += ","; | |||
673 | ||||
674 | // Add all the tokens until the end of the line, ParseSectionSpecifier will | |||
675 | // handle this. | |||
676 | StringRef EOL = getLexer().LexUntilEndOfStatement(); | |||
677 | SectionSpec.append(EOL.begin(), EOL.end()); | |||
678 | ||||
679 | Lex(); | |||
680 | if (getLexer().isNot(AsmToken::EndOfStatement)) | |||
681 | return TokError("unexpected token in '.section' directive"); | |||
682 | Lex(); | |||
683 | ||||
684 | StringRef Segment, Section; | |||
685 | unsigned StubSize; | |||
686 | unsigned TAA; | |||
687 | bool TAAParsed; | |||
688 | std::string ErrorStr = | |||
689 | MCSectionMachO::ParseSectionSpecifier(SectionSpec, Segment, Section, | |||
690 | TAA, TAAParsed, StubSize); | |||
691 | ||||
692 | if (!ErrorStr.empty()) | |||
693 | return Error(Loc, ErrorStr); | |||
694 | ||||
695 | // Issue a warning if the target is not powerpc and Section is a *coal* section. | |||
696 | Triple TT = getParser().getContext().getObjectFileInfo()->getTargetTriple(); | |||
697 | Triple::ArchType ArchTy = TT.getArch(); | |||
698 | ||||
699 | if (ArchTy != Triple::ppc && ArchTy != Triple::ppc64) { | |||
700 | StringRef NonCoalSection = StringSwitch<StringRef>(Section) | |||
701 | .Case("__textcoal_nt", "__text") | |||
702 | .Case("__const_coal", "__const") | |||
703 | .Case("__datacoal_nt", "__data") | |||
704 | .Default(Section); | |||
705 | ||||
706 | if (!Section.equals(NonCoalSection)) { | |||
707 | StringRef SectionVal(Loc.getPointer()); | |||
708 | size_t B = SectionVal.find(',') + 1, E = SectionVal.find(',', B); | |||
709 | SMLoc BLoc = SMLoc::getFromPointer(SectionVal.data() + B); | |||
710 | SMLoc ELoc = SMLoc::getFromPointer(SectionVal.data() + E); | |||
711 | getParser().Warning(Loc, "section \"" + Section + "\" is deprecated", | |||
712 | SMRange(BLoc, ELoc)); | |||
713 | getParser().Note(Loc, "change section name to \"" + NonCoalSection + | |||
714 | "\"", SMRange(BLoc, ELoc)); | |||
715 | } | |||
716 | } | |||
717 | ||||
718 | // FIXME: Arch specific. | |||
719 | bool isText = Segment == "__TEXT"; // FIXME: Hack. | |||
720 | getStreamer().SwitchSection(getContext().getMachOSection( | |||
721 | Segment, Section, TAA, StubSize, | |||
722 | isText ? SectionKind::getText() : SectionKind::getData())); | |||
723 | return false; | |||
724 | } | |||
725 | ||||
726 | /// ParseDirectivePushSection: | |||
727 | /// ::= .pushsection identifier (',' identifier)* | |||
728 | bool DarwinAsmParser::parseDirectivePushSection(StringRef S, SMLoc Loc) { | |||
729 | getStreamer().PushSection(); | |||
730 | ||||
731 | if (parseDirectiveSection(S, Loc)) { | |||
732 | getStreamer().PopSection(); | |||
733 | return true; | |||
734 | } | |||
735 | ||||
736 | return false; | |||
737 | } | |||
738 | ||||
739 | /// ParseDirectivePopSection: | |||
740 | /// ::= .popsection | |||
741 | bool DarwinAsmParser::parseDirectivePopSection(StringRef, SMLoc) { | |||
742 | if (!getStreamer().PopSection()) | |||
743 | return TokError(".popsection without corresponding .pushsection"); | |||
744 | return false; | |||
745 | } | |||
746 | ||||
747 | /// ParseDirectivePrevious: | |||
748 | /// ::= .previous | |||
749 | bool DarwinAsmParser::parseDirectivePrevious(StringRef DirName, SMLoc) { | |||
750 | MCSectionSubPair PreviousSection = getStreamer().getPreviousSection(); | |||
751 | if (!PreviousSection.first) | |||
752 | return TokError(".previous without corresponding .section"); | |||
753 | getStreamer().SwitchSection(PreviousSection.first, PreviousSection.second); | |||
754 | return false; | |||
755 | } | |||
756 | ||||
757 | /// ParseDirectiveSecureLogUnique | |||
758 | /// ::= .secure_log_unique ... message ... | |||
759 | bool DarwinAsmParser::parseDirectiveSecureLogUnique(StringRef, SMLoc IDLoc) { | |||
760 | StringRef LogMessage = getParser().parseStringToEndOfStatement(); | |||
761 | if (getLexer().isNot(AsmToken::EndOfStatement)) | |||
| ||||
762 | return TokError("unexpected token in '.secure_log_unique' directive"); | |||
763 | ||||
764 | if (getContext().getSecureLogUsed()) | |||
765 | return Error(IDLoc, ".secure_log_unique specified multiple times"); | |||
766 | ||||
767 | // Get the secure log path. | |||
768 | const char *SecureLogFile = getContext().getSecureLogFile(); | |||
769 | if (!SecureLogFile) | |||
770 | return Error(IDLoc, ".secure_log_unique used but AS_SECURE_LOG_FILE " | |||
771 | "environment variable unset."); | |||
772 | ||||
773 | // Open the secure log file if we haven't already. | |||
774 | raw_fd_ostream *OS = getContext().getSecureLog(); | |||
775 | if (!OS) { | |||
776 | std::error_code EC; | |||
777 | auto NewOS = llvm::make_unique<raw_fd_ostream>( | |||
778 | StringRef(SecureLogFile), EC, sys::fs::F_Append | sys::fs::F_Text); | |||
779 | if (EC) | |||
780 | return Error(IDLoc, Twine("can't open secure log file: ") + | |||
781 | SecureLogFile + " (" + EC.message() + ")"); | |||
782 | OS = NewOS.get(); | |||
783 | getContext().setSecureLog(std::move(NewOS)); | |||
784 | } | |||
785 | ||||
786 | // Write the message. | |||
787 | unsigned CurBuf = getSourceManager().FindBufferContainingLoc(IDLoc); | |||
788 | *OS << getSourceManager().getBufferInfo(CurBuf).Buffer->getBufferIdentifier() | |||
| ||||
789 | << ":" << getSourceManager().FindLineNumber(IDLoc, CurBuf) << ":" | |||
790 | << LogMessage + "\n"; | |||
791 | ||||
792 | getContext().setSecureLogUsed(true); | |||
793 | ||||
794 | return false; | |||
795 | } | |||
796 | ||||
797 | /// ParseDirectiveSecureLogReset | |||
798 | /// ::= .secure_log_reset | |||
799 | bool DarwinAsmParser::parseDirectiveSecureLogReset(StringRef, SMLoc IDLoc) { | |||
800 | if (getLexer().isNot(AsmToken::EndOfStatement)) | |||
801 | return TokError("unexpected token in '.secure_log_reset' directive"); | |||
802 | ||||
803 | Lex(); | |||
804 | ||||
805 | getContext().setSecureLogUsed(false); | |||
806 | ||||
807 | return false; | |||
808 | } | |||
809 | ||||
810 | /// parseDirectiveSubsectionsViaSymbols | |||
811 | /// ::= .subsections_via_symbols | |||
812 | bool DarwinAsmParser::parseDirectiveSubsectionsViaSymbols(StringRef, SMLoc) { | |||
813 | if (getLexer().isNot(AsmToken::EndOfStatement)) | |||
814 | return TokError("unexpected token in '.subsections_via_symbols' directive"); | |||
815 | ||||
816 | Lex(); | |||
817 | ||||
818 | getStreamer().EmitAssemblerFlag(MCAF_SubsectionsViaSymbols); | |||
819 | ||||
820 | return false; | |||
821 | } | |||
822 | ||||
823 | /// ParseDirectiveTBSS | |||
824 | /// ::= .tbss identifier, size, align | |||
825 | bool DarwinAsmParser::parseDirectiveTBSS(StringRef, SMLoc) { | |||
826 | SMLoc IDLoc = getLexer().getLoc(); | |||
827 | StringRef Name; | |||
828 | if (getParser().parseIdentifier(Name)) | |||
829 | return TokError("expected identifier in directive"); | |||
830 | ||||
831 | // Handle the identifier as the key symbol. | |||
832 | MCSymbol *Sym = getContext().getOrCreateSymbol(Name); | |||
833 | ||||
834 | if (getLexer().isNot(AsmToken::Comma)) | |||
835 | return TokError("unexpected token in directive"); | |||
836 | Lex(); | |||
837 | ||||
838 | int64_t Size; | |||
839 | SMLoc SizeLoc = getLexer().getLoc(); | |||
840 | if (getParser().parseAbsoluteExpression(Size)) | |||
841 | return true; | |||
842 | ||||
843 | int64_t Pow2Alignment = 0; | |||
844 | SMLoc Pow2AlignmentLoc; | |||
845 | if (getLexer().is(AsmToken::Comma)) { | |||
846 | Lex(); | |||
847 | Pow2AlignmentLoc = getLexer().getLoc(); | |||
848 | if (getParser().parseAbsoluteExpression(Pow2Alignment)) | |||
849 | return true; | |||
850 | } | |||
851 | ||||
852 | if (getLexer().isNot(AsmToken::EndOfStatement)) | |||
853 | return TokError("unexpected token in '.tbss' directive"); | |||
854 | ||||
855 | Lex(); | |||
856 | ||||
857 | if (Size < 0) | |||
858 | return Error(SizeLoc, "invalid '.tbss' directive size, can't be less than" | |||
859 | "zero"); | |||
860 | ||||
861 | // FIXME: Diagnose overflow. | |||
862 | if (Pow2Alignment < 0) | |||
863 | return Error(Pow2AlignmentLoc, "invalid '.tbss' alignment, can't be less" | |||
864 | "than zero"); | |||
865 | ||||
866 | if (!Sym->isUndefined()) | |||
867 | return Error(IDLoc, "invalid symbol redefinition"); | |||
868 | ||||
869 | getStreamer().EmitTBSSSymbol(getContext().getMachOSection( | |||
870 | "__DATA", "__thread_bss", | |||
871 | MachO::S_THREAD_LOCAL_ZEROFILL, | |||
872 | 0, SectionKind::getThreadBSS()), | |||
873 | Sym, Size, 1 << Pow2Alignment); | |||
874 | ||||
875 | return false; | |||
876 | } | |||
877 | ||||
878 | /// ParseDirectiveZerofill | |||
879 | /// ::= .zerofill segname , sectname [, identifier , size_expression [ | |||
880 | /// , align_expression ]] | |||
881 | bool DarwinAsmParser::parseDirectiveZerofill(StringRef, SMLoc) { | |||
882 | StringRef Segment; | |||
883 | if (getParser().parseIdentifier(Segment)) | |||
884 | return TokError("expected segment name after '.zerofill' directive"); | |||
885 | ||||
886 | if (getLexer().isNot(AsmToken::Comma)) | |||
887 | return TokError("unexpected token in directive"); | |||
888 | Lex(); | |||
889 | ||||
890 | StringRef Section; | |||
891 | if (getParser().parseIdentifier(Section)) | |||
892 | return TokError("expected section name after comma in '.zerofill' " | |||
893 | "directive"); | |||
894 | ||||
895 | // If this is the end of the line all that was wanted was to create the | |||
896 | // the section but with no symbol. | |||
897 | if (getLexer().is(AsmToken::EndOfStatement)) { | |||
898 | // Create the zerofill section but no symbol | |||
899 | getStreamer().EmitZerofill(getContext().getMachOSection( | |||
900 | Segment, Section, MachO::S_ZEROFILL, | |||
901 | 0, SectionKind::getBSS())); | |||
902 | return false; | |||
903 | } | |||
904 | ||||
905 | if (getLexer().isNot(AsmToken::Comma)) | |||
906 | return TokError("unexpected token in directive"); | |||
907 | Lex(); | |||
908 | ||||
909 | SMLoc IDLoc = getLexer().getLoc(); | |||
910 | StringRef IDStr; | |||
911 | if (getParser().parseIdentifier(IDStr)) | |||
912 | return TokError("expected identifier in directive"); | |||
913 | ||||
914 | // handle the identifier as the key symbol. | |||
915 | MCSymbol *Sym = getContext().getOrCreateSymbol(IDStr); | |||
916 | ||||
917 | if (getLexer().isNot(AsmToken::Comma)) | |||
918 | return TokError("unexpected token in directive"); | |||
919 | Lex(); | |||
920 | ||||
921 | int64_t Size; | |||
922 | SMLoc SizeLoc = getLexer().getLoc(); | |||
923 | if (getParser().parseAbsoluteExpression(Size)) | |||
924 | return true; | |||
925 | ||||
926 | int64_t Pow2Alignment = 0; | |||
927 | SMLoc Pow2AlignmentLoc; | |||
928 | if (getLexer().is(AsmToken::Comma)) { | |||
929 | Lex(); | |||
930 | Pow2AlignmentLoc = getLexer().getLoc(); | |||
931 | if (getParser().parseAbsoluteExpression(Pow2Alignment)) | |||
932 | return true; | |||
933 | } | |||
934 | ||||
935 | if (getLexer().isNot(AsmToken::EndOfStatement)) | |||
936 | return TokError("unexpected token in '.zerofill' directive"); | |||
937 | ||||
938 | Lex(); | |||
939 | ||||
940 | if (Size < 0) | |||
941 | return Error(SizeLoc, "invalid '.zerofill' directive size, can't be less " | |||
942 | "than zero"); | |||
943 | ||||
944 | // NOTE: The alignment in the directive is a power of 2 value, the assembler | |||
945 | // may internally end up wanting an alignment in bytes. | |||
946 | // FIXME: Diagnose overflow. | |||
947 | if (Pow2Alignment < 0) | |||
948 | return Error(Pow2AlignmentLoc, "invalid '.zerofill' directive alignment, " | |||
949 | "can't be less than zero"); | |||
950 | ||||
951 | if (!Sym->isUndefined()) | |||
952 | return Error(IDLoc, "invalid symbol redefinition"); | |||
953 | ||||
954 | // Create the zerofill Symbol with Size and Pow2Alignment | |||
955 | // | |||
956 | // FIXME: Arch specific. | |||
957 | getStreamer().EmitZerofill(getContext().getMachOSection( | |||
958 | Segment, Section, MachO::S_ZEROFILL, | |||
959 | 0, SectionKind::getBSS()), | |||
960 | Sym, Size, 1 << Pow2Alignment); | |||
961 | ||||
962 | return false; | |||
963 | } | |||
964 | ||||
965 | /// ParseDirectiveDataRegion | |||
966 | /// ::= .data_region [ ( jt8 | jt16 | jt32 ) ] | |||
967 | bool DarwinAsmParser::parseDirectiveDataRegion(StringRef, SMLoc) { | |||
968 | if (getLexer().is(AsmToken::EndOfStatement)) { | |||
969 | Lex(); | |||
970 | getStreamer().EmitDataRegion(MCDR_DataRegion); | |||
971 | return false; | |||
972 | } | |||
973 | StringRef RegionType; | |||
974 | SMLoc Loc = getParser().getTok().getLoc(); | |||
975 | if (getParser().parseIdentifier(RegionType)) | |||
976 | return TokError("expected region type after '.data_region' directive"); | |||
977 | int Kind = StringSwitch<int>(RegionType) | |||
978 | .Case("jt8", MCDR_DataRegionJT8) | |||
979 | .Case("jt16", MCDR_DataRegionJT16) | |||
980 | .Case("jt32", MCDR_DataRegionJT32) | |||
981 | .Default(-1); | |||
982 | if (Kind == -1) | |||
983 | return Error(Loc, "unknown region type in '.data_region' directive"); | |||
984 | Lex(); | |||
985 | ||||
986 | getStreamer().EmitDataRegion((MCDataRegionType)Kind); | |||
987 | return false; | |||
988 | } | |||
989 | ||||
990 | /// ParseDirectiveDataRegionEnd | |||
991 | /// ::= .end_data_region | |||
992 | bool DarwinAsmParser::parseDirectiveDataRegionEnd(StringRef, SMLoc) { | |||
993 | if (getLexer().isNot(AsmToken::EndOfStatement)) | |||
994 | return TokError("unexpected token in '.end_data_region' directive"); | |||
995 | ||||
996 | Lex(); | |||
997 | getStreamer().EmitDataRegion(MCDR_DataRegionEnd); | |||
998 | return false; | |||
999 | } | |||
1000 | ||||
1001 | /// parseVersion ::= major, minor [, update] | |||
1002 | bool DarwinAsmParser::parseVersion(unsigned *Major, unsigned *Minor, | |||
1003 | unsigned *Update) { | |||
1004 | // Get the major version number. | |||
1005 | if (getLexer().isNot(AsmToken::Integer)) | |||
1006 | return TokError("invalid OS major version number, integer expected"); | |||
1007 | int64_t MajorVal = getLexer().getTok().getIntVal(); | |||
1008 | if (MajorVal > 65535 || MajorVal <= 0) | |||
1009 | return TokError("invalid OS major version number"); | |||
1010 | *Major = (unsigned)MajorVal; | |||
1011 | Lex(); | |||
1012 | if (getLexer().isNot(AsmToken::Comma)) | |||
1013 | return TokError("OS minor version number required, comma expected"); | |||
1014 | Lex(); | |||
1015 | // Get the minor version number. | |||
1016 | if (getLexer().isNot(AsmToken::Integer)) | |||
1017 | return TokError("invalid OS minor version number, integer expected"); | |||
1018 | int64_t MinorVal = getLexer().getTok().getIntVal(); | |||
1019 | if (MinorVal > 255 || MinorVal < 0) | |||
1020 | return TokError("invalid OS minor version number"); | |||
1021 | *Minor = MinorVal; | |||
1022 | Lex(); | |||
1023 | ||||
1024 | // Get the update level, if specified | |||
1025 | *Update = 0; | |||
1026 | if (getLexer().is(AsmToken::EndOfStatement)) | |||
1027 | return false; | |||
1028 | if (getLexer().isNot(AsmToken::Comma)) | |||
1029 | return TokError("invalid OS update specifier, comma expected"); | |||
1030 | Lex(); | |||
1031 | if (getLexer().isNot(AsmToken::Integer)) | |||
1032 | return TokError("invalid OS update version number, integer expected"); | |||
1033 | int64_t UpdateVal = getLexer().getTok().getIntVal(); | |||
1034 | if (UpdateVal > 255 || UpdateVal < 0) | |||
1035 | return TokError("invalid OS update version number"); | |||
1036 | *Update = UpdateVal; | |||
1037 | Lex(); | |||
1038 | return false; | |||
1039 | } | |||
1040 | ||||
1041 | void DarwinAsmParser::checkVersion(StringRef Directive, StringRef Arg, | |||
1042 | SMLoc Loc, Triple::OSType ExpectedOS) { | |||
1043 | const Triple &Target = getContext().getObjectFileInfo()->getTargetTriple(); | |||
1044 | if (Target.getOS() != ExpectedOS) | |||
1045 | Warning(Loc, Twine(Directive) + | |||
1046 | (Arg.empty() ? Twine() : Twine(' ') + Arg) + | |||
1047 | " used while targeting " + Target.getOSName()); | |||
1048 | ||||
1049 | if (LastVersionDirective.isValid()) { | |||
1050 | Warning(Loc, "overriding previous version directive"); | |||
1051 | Note(LastVersionDirective, "previous definition is here"); | |||
1052 | } | |||
1053 | LastVersionDirective = Loc; | |||
1054 | } | |||
1055 | ||||
1056 | static Triple::OSType getOSTypeFromMCVM(MCVersionMinType Type) { | |||
1057 | switch (Type) { | |||
1058 | case MCVM_WatchOSVersionMin: return Triple::WatchOS; | |||
1059 | case MCVM_TvOSVersionMin: return Triple::TvOS; | |||
1060 | case MCVM_IOSVersionMin: return Triple::IOS; | |||
1061 | case MCVM_OSXVersionMin: return Triple::MacOSX; | |||
1062 | } | |||
1063 | llvm_unreachable("Invalid mc version min type")::llvm::llvm_unreachable_internal("Invalid mc version min type" , "/build/llvm-toolchain-snapshot-7~svn329677/lib/MC/MCParser/DarwinAsmParser.cpp" , 1063); | |||
1064 | } | |||
1065 | ||||
1066 | /// parseVersionMin | |||
1067 | /// ::= .ios_version_min parseVersion | |||
1068 | /// | .macosx_version_min parseVersion | |||
1069 | /// | .tvos_version_min parseVersion | |||
1070 | /// | .watchos_version_min parseVersion | |||
1071 | bool DarwinAsmParser::parseVersionMin(StringRef Directive, SMLoc Loc, | |||
1072 | MCVersionMinType Type) { | |||
1073 | unsigned Major; | |||
1074 | unsigned Minor; | |||
1075 | unsigned Update; | |||
1076 | if (parseVersion(&Major, &Minor, &Update)) | |||
1077 | return true; | |||
1078 | ||||
1079 | if (parseToken(AsmToken::EndOfStatement)) | |||
1080 | return addErrorSuffix(Twine(" in '") + Directive + "' directive"); | |||
1081 | ||||
1082 | Triple::OSType ExpectedOS = getOSTypeFromMCVM(Type); | |||
1083 | checkVersion(Directive, StringRef(), Loc, ExpectedOS); | |||
1084 | ||||
1085 | getStreamer().EmitVersionMin(Type, Major, Minor, Update); | |||
1086 | return false; | |||
1087 | } | |||
1088 | ||||
1089 | static Triple::OSType getOSTypeFromPlatform(MachO::PlatformType Type) { | |||
1090 | switch (Type) { | |||
1091 | case MachO::PLATFORM_MACOS: return Triple::MacOSX; | |||
1092 | case MachO::PLATFORM_IOS: return Triple::IOS; | |||
1093 | case MachO::PLATFORM_TVOS: return Triple::TvOS; | |||
1094 | case MachO::PLATFORM_WATCHOS: return Triple::WatchOS; | |||
1095 | case MachO::PLATFORM_BRIDGEOS: /* silence warning */break; | |||
1096 | } | |||
1097 | llvm_unreachable("Invalid mach-o platform type")::llvm::llvm_unreachable_internal("Invalid mach-o platform type" , "/build/llvm-toolchain-snapshot-7~svn329677/lib/MC/MCParser/DarwinAsmParser.cpp" , 1097); | |||
1098 | } | |||
1099 | ||||
1100 | /// parseBuildVersion | |||
1101 | /// ::= .build_version (macos|ios|tvos|watchos), parseVersion | |||
1102 | bool DarwinAsmParser::parseBuildVersion(StringRef Directive, SMLoc Loc) { | |||
1103 | StringRef PlatformName; | |||
1104 | SMLoc PlatformLoc = getTok().getLoc(); | |||
1105 | if (getParser().parseIdentifier(PlatformName)) | |||
1106 | return TokError("platform name expected"); | |||
1107 | ||||
1108 | unsigned Platform = StringSwitch<unsigned>(PlatformName) | |||
1109 | .Case("macos", MachO::PLATFORM_MACOS) | |||
1110 | .Case("ios", MachO::PLATFORM_IOS) | |||
1111 | .Case("tvos", MachO::PLATFORM_TVOS) | |||
1112 | .Case("watchos", MachO::PLATFORM_WATCHOS) | |||
1113 | .Default(0); | |||
1114 | if (Platform == 0) | |||
1115 | return Error(PlatformLoc, "unknown platform name"); | |||
1116 | ||||
1117 | if (getLexer().isNot(AsmToken::Comma)) | |||
1118 | return TokError("version number required, comma expected"); | |||
1119 | Lex(); | |||
1120 | ||||
1121 | unsigned Major; | |||
1122 | unsigned Minor; | |||
1123 | unsigned Update; | |||
1124 | if (parseVersion(&Major, &Minor, &Update)) | |||
1125 | return true; | |||
1126 | ||||
1127 | if (parseToken(AsmToken::EndOfStatement)) | |||
1128 | return addErrorSuffix(" in '.build_version' directive"); | |||
1129 | ||||
1130 | Triple::OSType ExpectedOS | |||
1131 | = getOSTypeFromPlatform((MachO::PlatformType)Platform); | |||
1132 | checkVersion(Directive, PlatformName, Loc, ExpectedOS); | |||
1133 | ||||
1134 | getStreamer().EmitBuildVersion(Platform, Major, Minor, Update); | |||
1135 | return false; | |||
1136 | } | |||
1137 | ||||
1138 | ||||
1139 | namespace llvm { | |||
1140 | ||||
1141 | MCAsmParserExtension *createDarwinAsmParser() { | |||
1142 | return new DarwinAsmParser; | |||
1143 | } | |||
1144 | ||||
1145 | } // end llvm namespace |
1 | //===- llvm/ADT/STLExtras.h - Useful STL related functions ------*- C++ -*-===// |
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 | // This file contains some templates that are useful if you are working with the |
11 | // STL at all. |
12 | // |
13 | // No library is required when using these functions. |
14 | // |
15 | //===----------------------------------------------------------------------===// |
16 | |
17 | #ifndef LLVM_ADT_STLEXTRAS_H |
18 | #define LLVM_ADT_STLEXTRAS_H |
19 | |
20 | #include "llvm/ADT/Optional.h" |
21 | #include "llvm/ADT/SmallVector.h" |
22 | #include "llvm/ADT/iterator.h" |
23 | #include "llvm/ADT/iterator_range.h" |
24 | #include "llvm/Support/ErrorHandling.h" |
25 | #include <algorithm> |
26 | #include <cassert> |
27 | #include <cstddef> |
28 | #include <cstdint> |
29 | #include <cstdlib> |
30 | #include <functional> |
31 | #include <initializer_list> |
32 | #include <iterator> |
33 | #include <limits> |
34 | #include <memory> |
35 | #include <tuple> |
36 | #include <type_traits> |
37 | #include <utility> |
38 | |
39 | #ifdef EXPENSIVE_CHECKS |
40 | #include <random> // for std::mt19937 |
41 | #endif |
42 | |
43 | namespace llvm { |
44 | |
45 | // Only used by compiler if both template types are the same. Useful when |
46 | // using SFINAE to test for the existence of member functions. |
47 | template <typename T, T> struct SameType; |
48 | |
49 | namespace detail { |
50 | |
51 | template <typename RangeT> |
52 | using IterOfRange = decltype(std::begin(std::declval<RangeT &>())); |
53 | |
54 | template <typename RangeT> |
55 | using ValueOfRange = typename std::remove_reference<decltype( |
56 | *std::begin(std::declval<RangeT &>()))>::type; |
57 | |
58 | } // end namespace detail |
59 | |
60 | //===----------------------------------------------------------------------===// |
61 | // Extra additions to <functional> |
62 | //===----------------------------------------------------------------------===// |
63 | |
64 | template <class Ty> struct identity { |
65 | using argument_type = Ty; |
66 | |
67 | Ty &operator()(Ty &self) const { |
68 | return self; |
69 | } |
70 | const Ty &operator()(const Ty &self) const { |
71 | return self; |
72 | } |
73 | }; |
74 | |
75 | template <class Ty> struct less_ptr { |
76 | bool operator()(const Ty* left, const Ty* right) const { |
77 | return *left < *right; |
78 | } |
79 | }; |
80 | |
81 | template <class Ty> struct greater_ptr { |
82 | bool operator()(const Ty* left, const Ty* right) const { |
83 | return *right < *left; |
84 | } |
85 | }; |
86 | |
87 | /// An efficient, type-erasing, non-owning reference to a callable. This is |
88 | /// intended for use as the type of a function parameter that is not used |
89 | /// after the function in question returns. |
90 | /// |
91 | /// This class does not own the callable, so it is not in general safe to store |
92 | /// a function_ref. |
93 | template<typename Fn> class function_ref; |
94 | |
95 | template<typename Ret, typename ...Params> |
96 | class function_ref<Ret(Params...)> { |
97 | Ret (*callback)(intptr_t callable, Params ...params) = nullptr; |
98 | intptr_t callable; |
99 | |
100 | template<typename Callable> |
101 | static Ret callback_fn(intptr_t callable, Params ...params) { |
102 | return (*reinterpret_cast<Callable*>(callable))( |
103 | std::forward<Params>(params)...); |
104 | } |
105 | |
106 | public: |
107 | function_ref() = default; |
108 | function_ref(std::nullptr_t) {} |
109 | |
110 | template <typename Callable> |
111 | function_ref(Callable &&callable, |
112 | typename std::enable_if< |
113 | !std::is_same<typename std::remove_reference<Callable>::type, |
114 | function_ref>::value>::type * = nullptr) |
115 | : callback(callback_fn<typename std::remove_reference<Callable>::type>), |
116 | callable(reinterpret_cast<intptr_t>(&callable)) {} |
117 | |
118 | Ret operator()(Params ...params) const { |
119 | return callback(callable, std::forward<Params>(params)...); |
120 | } |
121 | |
122 | operator bool() const { return callback; } |
123 | }; |
124 | |
125 | // deleter - Very very very simple method that is used to invoke operator |
126 | // delete on something. It is used like this: |
127 | // |
128 | // for_each(V.begin(), B.end(), deleter<Interval>); |
129 | template <class T> |
130 | inline void deleter(T *Ptr) { |
131 | delete Ptr; |
132 | } |
133 | |
134 | //===----------------------------------------------------------------------===// |
135 | // Extra additions to <iterator> |
136 | //===----------------------------------------------------------------------===// |
137 | |
138 | namespace adl_detail { |
139 | |
140 | using std::begin; |
141 | |
142 | template <typename ContainerTy> |
143 | auto adl_begin(ContainerTy &&container) |
144 | -> decltype(begin(std::forward<ContainerTy>(container))) { |
145 | return begin(std::forward<ContainerTy>(container)); |
146 | } |
147 | |
148 | using std::end; |
149 | |
150 | template <typename ContainerTy> |
151 | auto adl_end(ContainerTy &&container) |
152 | -> decltype(end(std::forward<ContainerTy>(container))) { |
153 | return end(std::forward<ContainerTy>(container)); |
154 | } |
155 | |
156 | using std::swap; |
157 | |
158 | template <typename T> |
159 | void adl_swap(T &&lhs, T &&rhs) noexcept(noexcept(swap(std::declval<T>(), |
160 | std::declval<T>()))) { |
161 | swap(std::forward<T>(lhs), std::forward<T>(rhs)); |
162 | } |
163 | |
164 | } // end namespace adl_detail |
165 | |
166 | template <typename ContainerTy> |
167 | auto adl_begin(ContainerTy &&container) |
168 | -> decltype(adl_detail::adl_begin(std::forward<ContainerTy>(container))) { |
169 | return adl_detail::adl_begin(std::forward<ContainerTy>(container)); |
170 | } |
171 | |
172 | template <typename ContainerTy> |
173 | auto adl_end(ContainerTy &&container) |
174 | -> decltype(adl_detail::adl_end(std::forward<ContainerTy>(container))) { |
175 | return adl_detail::adl_end(std::forward<ContainerTy>(container)); |
176 | } |
177 | |
178 | template <typename T> |
179 | void adl_swap(T &&lhs, T &&rhs) noexcept( |
180 | noexcept(adl_detail::adl_swap(std::declval<T>(), std::declval<T>()))) { |
181 | adl_detail::adl_swap(std::forward<T>(lhs), std::forward<T>(rhs)); |
182 | } |
183 | |
184 | // mapped_iterator - This is a simple iterator adapter that causes a function to |
185 | // be applied whenever operator* is invoked on the iterator. |
186 | |
187 | template <typename ItTy, typename FuncTy, |
188 | typename FuncReturnTy = |
189 | decltype(std::declval<FuncTy>()(*std::declval<ItTy>()))> |
190 | class mapped_iterator |
191 | : public iterator_adaptor_base< |
192 | mapped_iterator<ItTy, FuncTy>, ItTy, |
193 | typename std::iterator_traits<ItTy>::iterator_category, |
194 | typename std::remove_reference<FuncReturnTy>::type> { |
195 | public: |
196 | mapped_iterator(ItTy U, FuncTy F) |
197 | : mapped_iterator::iterator_adaptor_base(std::move(U)), F(std::move(F)) {} |
198 | |
199 | ItTy getCurrent() { return this->I; } |
200 | |
201 | FuncReturnTy operator*() { return F(*this->I); } |
202 | |
203 | private: |
204 | FuncTy F; |
205 | }; |
206 | |
207 | // map_iterator - Provide a convenient way to create mapped_iterators, just like |
208 | // make_pair is useful for creating pairs... |
209 | template <class ItTy, class FuncTy> |
210 | inline mapped_iterator<ItTy, FuncTy> map_iterator(ItTy I, FuncTy F) { |
211 | return mapped_iterator<ItTy, FuncTy>(std::move(I), std::move(F)); |
212 | } |
213 | |
214 | /// Helper to determine if type T has a member called rbegin(). |
215 | template <typename Ty> class has_rbegin_impl { |
216 | using yes = char[1]; |
217 | using no = char[2]; |
218 | |
219 | template <typename Inner> |
220 | static yes& test(Inner *I, decltype(I->rbegin()) * = nullptr); |
221 | |
222 | template <typename> |
223 | static no& test(...); |
224 | |
225 | public: |
226 | static const bool value = sizeof(test<Ty>(nullptr)) == sizeof(yes); |
227 | }; |
228 | |
229 | /// Metafunction to determine if T& or T has a member called rbegin(). |
230 | template <typename Ty> |
231 | struct has_rbegin : has_rbegin_impl<typename std::remove_reference<Ty>::type> { |
232 | }; |
233 | |
234 | // Returns an iterator_range over the given container which iterates in reverse. |
235 | // Note that the container must have rbegin()/rend() methods for this to work. |
236 | template <typename ContainerTy> |
237 | auto reverse(ContainerTy &&C, |
238 | typename std::enable_if<has_rbegin<ContainerTy>::value>::type * = |
239 | nullptr) -> decltype(make_range(C.rbegin(), C.rend())) { |
240 | return make_range(C.rbegin(), C.rend()); |
241 | } |
242 | |
243 | // Returns a std::reverse_iterator wrapped around the given iterator. |
244 | template <typename IteratorTy> |
245 | std::reverse_iterator<IteratorTy> make_reverse_iterator(IteratorTy It) { |
246 | return std::reverse_iterator<IteratorTy>(It); |
247 | } |
248 | |
249 | // Returns an iterator_range over the given container which iterates in reverse. |
250 | // Note that the container must have begin()/end() methods which return |
251 | // bidirectional iterators for this to work. |
252 | template <typename ContainerTy> |
253 | auto reverse( |
254 | ContainerTy &&C, |
255 | typename std::enable_if<!has_rbegin<ContainerTy>::value>::type * = nullptr) |
256 | -> decltype(make_range(llvm::make_reverse_iterator(std::end(C)), |
257 | llvm::make_reverse_iterator(std::begin(C)))) { |
258 | return make_range(llvm::make_reverse_iterator(std::end(C)), |
259 | llvm::make_reverse_iterator(std::begin(C))); |
260 | } |
261 | |
262 | /// An iterator adaptor that filters the elements of given inner iterators. |
263 | /// |
264 | /// The predicate parameter should be a callable object that accepts the wrapped |
265 | /// iterator's reference type and returns a bool. When incrementing or |
266 | /// decrementing the iterator, it will call the predicate on each element and |
267 | /// skip any where it returns false. |
268 | /// |
269 | /// \code |
270 | /// int A[] = { 1, 2, 3, 4 }; |
271 | /// auto R = make_filter_range(A, [](int N) { return N % 2 == 1; }); |
272 | /// // R contains { 1, 3 }. |
273 | /// \endcode |
274 | template <typename WrappedIteratorT, typename PredicateT> |
275 | class filter_iterator |
276 | : public iterator_adaptor_base< |
277 | filter_iterator<WrappedIteratorT, PredicateT>, WrappedIteratorT, |
278 | typename std::common_type< |
279 | std::forward_iterator_tag, |
280 | typename std::iterator_traits< |
281 | WrappedIteratorT>::iterator_category>::type> { |
282 | using BaseT = iterator_adaptor_base< |
283 | filter_iterator<WrappedIteratorT, PredicateT>, WrappedIteratorT, |
284 | typename std::common_type< |
285 | std::forward_iterator_tag, |
286 | typename std::iterator_traits<WrappedIteratorT>::iterator_category>:: |
287 | type>; |
288 | |
289 | struct PayloadType { |
290 | WrappedIteratorT End; |
291 | PredicateT Pred; |
292 | }; |
293 | |
294 | Optional<PayloadType> Payload; |
295 | |
296 | void findNextValid() { |
297 | assert(Payload && "Payload should be engaged when findNextValid is called")(static_cast <bool> (Payload && "Payload should be engaged when findNextValid is called" ) ? void (0) : __assert_fail ("Payload && \"Payload should be engaged when findNextValid is called\"" , "/build/llvm-toolchain-snapshot-7~svn329677/include/llvm/ADT/STLExtras.h" , 297, __extension__ __PRETTY_FUNCTION__)); |
298 | while (this->I != Payload->End && !Payload->Pred(*this->I)) |
299 | BaseT::operator++(); |
300 | } |
301 | |
302 | // Construct the begin iterator. The begin iterator requires to know where end |
303 | // is, so that it can properly stop when it hits end. |
304 | filter_iterator(WrappedIteratorT Begin, WrappedIteratorT End, PredicateT Pred) |
305 | : BaseT(std::move(Begin)), |
306 | Payload(PayloadType{std::move(End), std::move(Pred)}) { |
307 | findNextValid(); |
308 | } |
309 | |
310 | // Construct the end iterator. It's not incrementable, so Payload doesn't |
311 | // have to be engaged. |
312 | filter_iterator(WrappedIteratorT End) : BaseT(End) {} |
313 | |
314 | public: |
315 | using BaseT::operator++; |
316 | |
317 | filter_iterator &operator++() { |
318 | BaseT::operator++(); |
319 | findNextValid(); |
320 | return *this; |
321 | } |
322 | |
323 | template <typename RT, typename PT> |
324 | friend iterator_range<filter_iterator<detail::IterOfRange<RT>, PT>> |
325 | make_filter_range(RT &&, PT); |
326 | }; |
327 | |
328 | /// Convenience function that takes a range of elements and a predicate, |
329 | /// and return a new filter_iterator range. |
330 | /// |
331 | /// FIXME: Currently if RangeT && is a rvalue reference to a temporary, the |
332 | /// lifetime of that temporary is not kept by the returned range object, and the |
333 | /// temporary is going to be dropped on the floor after the make_iterator_range |
334 | /// full expression that contains this function call. |
335 | template <typename RangeT, typename PredicateT> |
336 | iterator_range<filter_iterator<detail::IterOfRange<RangeT>, PredicateT>> |
337 | make_filter_range(RangeT &&Range, PredicateT Pred) { |
338 | using FilterIteratorT = |
339 | filter_iterator<detail::IterOfRange<RangeT>, PredicateT>; |
340 | return make_range(FilterIteratorT(std::begin(std::forward<RangeT>(Range)), |
341 | std::end(std::forward<RangeT>(Range)), |
342 | std::move(Pred)), |
343 | FilterIteratorT(std::end(std::forward<RangeT>(Range)))); |
344 | } |
345 | |
346 | // forward declarations required by zip_shortest/zip_first |
347 | template <typename R, typename UnaryPredicate> |
348 | bool all_of(R &&range, UnaryPredicate P); |
349 | |
350 | template <size_t... I> struct index_sequence; |
351 | |
352 | template <class... Ts> struct index_sequence_for; |
353 | |
354 | namespace detail { |
355 | |
356 | using std::declval; |
357 | |
358 | // We have to alias this since inlining the actual type at the usage site |
359 | // in the parameter list of iterator_facade_base<> below ICEs MSVC 2017. |
360 | template<typename... Iters> struct ZipTupleType { |
361 | using type = std::tuple<decltype(*declval<Iters>())...>; |
362 | }; |
363 | |
364 | template <typename ZipType, typename... Iters> |
365 | using zip_traits = iterator_facade_base< |
366 | ZipType, typename std::common_type<std::bidirectional_iterator_tag, |
367 | typename std::iterator_traits< |
368 | Iters>::iterator_category...>::type, |
369 | // ^ TODO: Implement random access methods. |
370 | typename ZipTupleType<Iters...>::type, |
371 | typename std::iterator_traits<typename std::tuple_element< |
372 | 0, std::tuple<Iters...>>::type>::difference_type, |
373 | // ^ FIXME: This follows boost::make_zip_iterator's assumption that all |
374 | // inner iterators have the same difference_type. It would fail if, for |
375 | // instance, the second field's difference_type were non-numeric while the |
376 | // first is. |
377 | typename ZipTupleType<Iters...>::type *, |
378 | typename ZipTupleType<Iters...>::type>; |
379 | |
380 | template <typename ZipType, typename... Iters> |
381 | struct zip_common : public zip_traits<ZipType, Iters...> { |
382 | using Base = zip_traits<ZipType, Iters...>; |
383 | using value_type = typename Base::value_type; |
384 | |
385 | std::tuple<Iters...> iterators; |
386 | |
387 | protected: |
388 | template <size_t... Ns> value_type deref(index_sequence<Ns...>) const { |
389 | return value_type(*std::get<Ns>(iterators)...); |
390 | } |
391 | |
392 | template <size_t... Ns> |
393 | decltype(iterators) tup_inc(index_sequence<Ns...>) const { |
394 | return std::tuple<Iters...>(std::next(std::get<Ns>(iterators))...); |
395 | } |
396 | |
397 | template <size_t... Ns> |
398 | decltype(iterators) tup_dec(index_sequence<Ns...>) const { |
399 | return std::tuple<Iters...>(std::prev(std::get<Ns>(iterators))...); |
400 | } |
401 | |
402 | public: |
403 | zip_common(Iters &&... ts) : iterators(std::forward<Iters>(ts)...) {} |
404 | |
405 | value_type operator*() { return deref(index_sequence_for<Iters...>{}); } |
406 | |
407 | const value_type operator*() const { |
408 | return deref(index_sequence_for<Iters...>{}); |
409 | } |
410 | |
411 | ZipType &operator++() { |
412 | iterators = tup_inc(index_sequence_for<Iters...>{}); |
413 | return *reinterpret_cast<ZipType *>(this); |
414 | } |
415 | |
416 | ZipType &operator--() { |
417 | static_assert(Base::IsBidirectional, |
418 | "All inner iterators must be at least bidirectional."); |
419 | iterators = tup_dec(index_sequence_for<Iters...>{}); |
420 | return *reinterpret_cast<ZipType *>(this); |
421 | } |
422 | }; |
423 | |
424 | template <typename... Iters> |
425 | struct zip_first : public zip_common<zip_first<Iters...>, Iters...> { |
426 | using Base = zip_common<zip_first<Iters...>, Iters...>; |
427 | |
428 | bool operator==(const zip_first<Iters...> &other) const { |
429 | return std::get<0>(this->iterators) == std::get<0>(other.iterators); |
430 | } |
431 | |
432 | zip_first(Iters &&... ts) : Base(std::forward<Iters>(ts)...) {} |
433 | }; |
434 | |
435 | template <typename... Iters> |
436 | class zip_shortest : public zip_common<zip_shortest<Iters...>, Iters...> { |
437 | template <size_t... Ns> |
438 | bool test(const zip_shortest<Iters...> &other, index_sequence<Ns...>) const { |
439 | return all_of(std::initializer_list<bool>{std::get<Ns>(this->iterators) != |
440 | std::get<Ns>(other.iterators)...}, |
441 | identity<bool>{}); |
442 | } |
443 | |
444 | public: |
445 | using Base = zip_common<zip_shortest<Iters...>, Iters...>; |
446 | |
447 | zip_shortest(Iters &&... ts) : Base(std::forward<Iters>(ts)...) {} |
448 | |
449 | bool operator==(const zip_shortest<Iters...> &other) const { |
450 | return !test(other, index_sequence_for<Iters...>{}); |
451 | } |
452 | }; |
453 | |
454 | template <template <typename...> class ItType, typename... Args> class zippy { |
455 | public: |
456 | using iterator = ItType<decltype(std::begin(std::declval<Args>()))...>; |
457 | using iterator_category = typename iterator::iterator_category; |
458 | using value_type = typename iterator::value_type; |
459 | using difference_type = typename iterator::difference_type; |
460 | using pointer = typename iterator::pointer; |
461 | using reference = typename iterator::reference; |
462 | |
463 | private: |
464 | std::tuple<Args...> ts; |
465 | |
466 | template <size_t... Ns> iterator begin_impl(index_sequence<Ns...>) const { |
467 | return iterator(std::begin(std::get<Ns>(ts))...); |
468 | } |
469 | template <size_t... Ns> iterator end_impl(index_sequence<Ns...>) const { |
470 | return iterator(std::end(std::get<Ns>(ts))...); |
471 | } |
472 | |
473 | public: |
474 | zippy(Args &&... ts_) : ts(std::forward<Args>(ts_)...) {} |
475 | |
476 | iterator begin() const { return begin_impl(index_sequence_for<Args...>{}); } |
477 | iterator end() const { return end_impl(index_sequence_for<Args...>{}); } |
478 | }; |
479 | |
480 | } // end namespace detail |
481 | |
482 | /// zip iterator for two or more iteratable types. |
483 | template <typename T, typename U, typename... Args> |
484 | detail::zippy<detail::zip_shortest, T, U, Args...> zip(T &&t, U &&u, |
485 | Args &&... args) { |
486 | return detail::zippy<detail::zip_shortest, T, U, Args...>( |
487 | std::forward<T>(t), std::forward<U>(u), std::forward<Args>(args)...); |
488 | } |
489 | |
490 | /// zip iterator that, for the sake of efficiency, assumes the first iteratee to |
491 | /// be the shortest. |
492 | template <typename T, typename U, typename... Args> |
493 | detail::zippy<detail::zip_first, T, U, Args...> zip_first(T &&t, U &&u, |
494 | Args &&... args) { |
495 | return detail::zippy<detail::zip_first, T, U, Args...>( |
496 | std::forward<T>(t), std::forward<U>(u), std::forward<Args>(args)...); |
497 | } |
498 | |
499 | /// Iterator wrapper that concatenates sequences together. |
500 | /// |
501 | /// This can concatenate different iterators, even with different types, into |
502 | /// a single iterator provided the value types of all the concatenated |
503 | /// iterators expose `reference` and `pointer` types that can be converted to |
504 | /// `ValueT &` and `ValueT *` respectively. It doesn't support more |
505 | /// interesting/customized pointer or reference types. |
506 | /// |
507 | /// Currently this only supports forward or higher iterator categories as |
508 | /// inputs and always exposes a forward iterator interface. |
509 | template <typename ValueT, typename... IterTs> |
510 | class concat_iterator |
511 | : public iterator_facade_base<concat_iterator<ValueT, IterTs...>, |
512 | std::forward_iterator_tag, ValueT> { |
513 | using BaseT = typename concat_iterator::iterator_facade_base; |
514 | |
515 | /// We store both the current and end iterators for each concatenated |
516 | /// sequence in a tuple of pairs. |
517 | /// |
518 | /// Note that something like iterator_range seems nice at first here, but the |
519 | /// range properties are of little benefit and end up getting in the way |
520 | /// because we need to do mutation on the current iterators. |
521 | std::tuple<std::pair<IterTs, IterTs>...> IterPairs; |
522 | |
523 | /// Attempts to increment a specific iterator. |
524 | /// |
525 | /// Returns true if it was able to increment the iterator. Returns false if |
526 | /// the iterator is already at the end iterator. |
527 | template <size_t Index> bool incrementHelper() { |
528 | auto &IterPair = std::get<Index>(IterPairs); |
529 | if (IterPair.first == IterPair.second) |
530 | return false; |
531 | |
532 | ++IterPair.first; |
533 | return true; |
534 | } |
535 | |
536 | /// Increments the first non-end iterator. |
537 | /// |
538 | /// It is an error to call this with all iterators at the end. |
539 | template <size_t... Ns> void increment(index_sequence<Ns...>) { |
540 | // Build a sequence of functions to increment each iterator if possible. |
541 | bool (concat_iterator::*IncrementHelperFns[])() = { |
542 | &concat_iterator::incrementHelper<Ns>...}; |
543 | |
544 | // Loop over them, and stop as soon as we succeed at incrementing one. |
545 | for (auto &IncrementHelperFn : IncrementHelperFns) |
546 | if ((this->*IncrementHelperFn)()) |
547 | return; |
548 | |
549 | llvm_unreachable("Attempted to increment an end concat iterator!")::llvm::llvm_unreachable_internal("Attempted to increment an end concat iterator!" , "/build/llvm-toolchain-snapshot-7~svn329677/include/llvm/ADT/STLExtras.h" , 549); |
550 | } |
551 | |
552 | /// Returns null if the specified iterator is at the end. Otherwise, |
553 | /// dereferences the iterator and returns the address of the resulting |
554 | /// reference. |
555 | template <size_t Index> ValueT *getHelper() const { |
556 | auto &IterPair = std::get<Index>(IterPairs); |
557 | if (IterPair.first == IterPair.second) |
558 | return nullptr; |
559 | |
560 | return &*IterPair.first; |
561 | } |
562 | |
563 | /// Finds the first non-end iterator, dereferences, and returns the resulting |
564 | /// reference. |
565 | /// |
566 | /// It is an error to call this with all iterators at the end. |
567 | template <size_t... Ns> ValueT &get(index_sequence<Ns...>) const { |
568 | // Build a sequence of functions to get from iterator if possible. |
569 | ValueT *(concat_iterator::*GetHelperFns[])() const = { |
570 | &concat_iterator::getHelper<Ns>...}; |
571 | |
572 | // Loop over them, and return the first result we find. |
573 | for (auto &GetHelperFn : GetHelperFns) |
574 | if (ValueT *P = (this->*GetHelperFn)()) |
575 | return *P; |
576 | |
577 | llvm_unreachable("Attempted to get a pointer from an end concat iterator!")::llvm::llvm_unreachable_internal("Attempted to get a pointer from an end concat iterator!" , "/build/llvm-toolchain-snapshot-7~svn329677/include/llvm/ADT/STLExtras.h" , 577); |
578 | } |
579 | |
580 | public: |
581 | /// Constructs an iterator from a squence of ranges. |
582 | /// |
583 | /// We need the full range to know how to switch between each of the |
584 | /// iterators. |
585 | template <typename... RangeTs> |
586 | explicit concat_iterator(RangeTs &&... Ranges) |
587 | : IterPairs({std::begin(Ranges), std::end(Ranges)}...) {} |
588 | |
589 | using BaseT::operator++; |
590 | |
591 | concat_iterator &operator++() { |
592 | increment(index_sequence_for<IterTs...>()); |
593 | return *this; |
594 | } |
595 | |
596 | ValueT &operator*() const { return get(index_sequence_for<IterTs...>()); } |
597 | |
598 | bool operator==(const concat_iterator &RHS) const { |
599 | return IterPairs == RHS.IterPairs; |
600 | } |
601 | }; |
602 | |
603 | namespace detail { |
604 | |
605 | /// Helper to store a sequence of ranges being concatenated and access them. |
606 | /// |
607 | /// This is designed to facilitate providing actual storage when temporaries |
608 | /// are passed into the constructor such that we can use it as part of range |
609 | /// based for loops. |
610 | template <typename ValueT, typename... RangeTs> class concat_range { |
611 | public: |
612 | using iterator = |
613 | concat_iterator<ValueT, |
614 | decltype(std::begin(std::declval<RangeTs &>()))...>; |
615 | |
616 | private: |
617 | std::tuple<RangeTs...> Ranges; |
618 | |
619 | template <size_t... Ns> iterator begin_impl(index_sequence<Ns...>) { |
620 | return iterator(std::get<Ns>(Ranges)...); |
621 | } |
622 | template <size_t... Ns> iterator end_impl(index_sequence<Ns...>) { |
623 | return iterator(make_range(std::end(std::get<Ns>(Ranges)), |
624 | std::end(std::get<Ns>(Ranges)))...); |
625 | } |
626 | |
627 | public: |
628 | concat_range(RangeTs &&... Ranges) |
629 | : Ranges(std::forward<RangeTs>(Ranges)...) {} |
630 | |
631 | iterator begin() { return begin_impl(index_sequence_for<RangeTs...>{}); } |
632 | iterator end() { return end_impl(index_sequence_for<RangeTs...>{}); } |
633 | }; |
634 | |
635 | } // end namespace detail |
636 | |
637 | /// Concatenated range across two or more ranges. |
638 | /// |
639 | /// The desired value type must be explicitly specified. |
640 | template <typename ValueT, typename... RangeTs> |
641 | detail::concat_range<ValueT, RangeTs...> concat(RangeTs &&... Ranges) { |
642 | static_assert(sizeof...(RangeTs) > 1, |
643 | "Need more than one range to concatenate!"); |
644 | return detail::concat_range<ValueT, RangeTs...>( |
645 | std::forward<RangeTs>(Ranges)...); |
646 | } |
647 | |
648 | //===----------------------------------------------------------------------===// |
649 | // Extra additions to <utility> |
650 | //===----------------------------------------------------------------------===// |
651 | |
652 | /// \brief Function object to check whether the first component of a std::pair |
653 | /// compares less than the first component of another std::pair. |
654 | struct less_first { |
655 | template <typename T> bool operator()(const T &lhs, const T &rhs) const { |
656 | return lhs.first < rhs.first; |
657 | } |
658 | }; |
659 | |
660 | /// \brief Function object to check whether the second component of a std::pair |
661 | /// compares less than the second component of another std::pair. |
662 | struct less_second { |
663 | template <typename T> bool operator()(const T &lhs, const T &rhs) const { |
664 | return lhs.second < rhs.second; |
665 | } |
666 | }; |
667 | |
668 | // A subset of N3658. More stuff can be added as-needed. |
669 | |
670 | /// \brief Represents a compile-time sequence of integers. |
671 | template <class T, T... I> struct integer_sequence { |
672 | using value_type = T; |
673 | |
674 | static constexpr size_t size() { return sizeof...(I); } |
675 | }; |
676 | |
677 | /// \brief Alias for the common case of a sequence of size_ts. |
678 | template <size_t... I> |
679 | struct index_sequence : integer_sequence<std::size_t, I...> {}; |
680 | |
681 | template <std::size_t N, std::size_t... I> |
682 | struct build_index_impl : build_index_impl<N - 1, N - 1, I...> {}; |
683 | template <std::size_t... I> |
684 | struct build_index_impl<0, I...> : index_sequence<I...> {}; |
685 | |
686 | /// \brief Creates a compile-time integer sequence for a parameter pack. |
687 | template <class... Ts> |
688 | struct index_sequence_for : build_index_impl<sizeof...(Ts)> {}; |
689 | |
690 | /// Utility type to build an inheritance chain that makes it easy to rank |
691 | /// overload candidates. |
692 | template <int N> struct rank : rank<N - 1> {}; |
693 | template <> struct rank<0> {}; |
694 | |
695 | /// \brief traits class for checking whether type T is one of any of the given |
696 | /// types in the variadic list. |
697 | template <typename T, typename... Ts> struct is_one_of { |
698 | static const bool value = false; |
699 | }; |
700 | |
701 | template <typename T, typename U, typename... Ts> |
702 | struct is_one_of<T, U, Ts...> { |
703 | static const bool value = |
704 | std::is_same<T, U>::value || is_one_of<T, Ts...>::value; |
705 | }; |
706 | |
707 | /// \brief traits class for checking whether type T is a base class for all |
708 | /// the given types in the variadic list. |
709 | template <typename T, typename... Ts> struct are_base_of { |
710 | static const bool value = true; |
711 | }; |
712 | |
713 | template <typename T, typename U, typename... Ts> |
714 | struct are_base_of<T, U, Ts...> { |
715 | static const bool value = |
716 | std::is_base_of<T, U>::value && are_base_of<T, Ts...>::value; |
717 | }; |
718 | |
719 | //===----------------------------------------------------------------------===// |
720 | // Extra additions for arrays |
721 | //===----------------------------------------------------------------------===// |
722 | |
723 | /// Find the length of an array. |
724 | template <class T, std::size_t N> |
725 | constexpr inline size_t array_lengthof(T (&)[N]) { |
726 | return N; |
727 | } |
728 | |
729 | /// Adapt std::less<T> for array_pod_sort. |
730 | template<typename T> |
731 | inline int array_pod_sort_comparator(const void *P1, const void *P2) { |
732 | if (std::less<T>()(*reinterpret_cast<const T*>(P1), |
733 | *reinterpret_cast<const T*>(P2))) |
734 | return -1; |
735 | if (std::less<T>()(*reinterpret_cast<const T*>(P2), |
736 | *reinterpret_cast<const T*>(P1))) |
737 | return 1; |
738 | return 0; |
739 | } |
740 | |
741 | /// get_array_pod_sort_comparator - This is an internal helper function used to |
742 | /// get type deduction of T right. |
743 | template<typename T> |
744 | inline int (*get_array_pod_sort_comparator(const T &)) |
745 | (const void*, const void*) { |
746 | return array_pod_sort_comparator<T>; |
747 | } |
748 | |
749 | /// array_pod_sort - This sorts an array with the specified start and end |
750 | /// extent. This is just like std::sort, except that it calls qsort instead of |
751 | /// using an inlined template. qsort is slightly slower than std::sort, but |
752 | /// most sorts are not performance critical in LLVM and std::sort has to be |
753 | /// template instantiated for each type, leading to significant measured code |
754 | /// bloat. This function should generally be used instead of std::sort where |
755 | /// possible. |
756 | /// |
757 | /// This function assumes that you have simple POD-like types that can be |
758 | /// compared with std::less and can be moved with memcpy. If this isn't true, |
759 | /// you should use std::sort. |
760 | /// |
761 | /// NOTE: If qsort_r were portable, we could allow a custom comparator and |
762 | /// default to std::less. |
763 | template<class IteratorTy> |
764 | inline void array_pod_sort(IteratorTy Start, IteratorTy End) { |
765 | // Don't inefficiently call qsort with one element or trigger undefined |
766 | // behavior with an empty sequence. |
767 | auto NElts = End - Start; |
768 | if (NElts <= 1) return; |
769 | #ifdef EXPENSIVE_CHECKS |
770 | std::mt19937 Generator(std::random_device{}()); |
771 | std::shuffle(Start, End, Generator); |
772 | #endif |
773 | qsort(&*Start, NElts, sizeof(*Start), get_array_pod_sort_comparator(*Start)); |
774 | } |
775 | |
776 | template <class IteratorTy> |
777 | inline void array_pod_sort( |
778 | IteratorTy Start, IteratorTy End, |
779 | int (*Compare)( |
780 | const typename std::iterator_traits<IteratorTy>::value_type *, |
781 | const typename std::iterator_traits<IteratorTy>::value_type *)) { |
782 | // Don't inefficiently call qsort with one element or trigger undefined |
783 | // behavior with an empty sequence. |
784 | auto NElts = End - Start; |
785 | if (NElts <= 1) return; |
786 | #ifdef EXPENSIVE_CHECKS |
787 | std::mt19937 Generator(std::random_device{}()); |
788 | std::shuffle(Start, End, Generator); |
789 | #endif |
790 | qsort(&*Start, NElts, sizeof(*Start), |
791 | reinterpret_cast<int (*)(const void *, const void *)>(Compare)); |
792 | } |
793 | |
794 | // Provide wrappers to std::sort which shuffle the elements before sorting |
795 | // to help uncover non-deterministic behavior (PR35135). |
796 | template <typename IteratorTy> |
797 | inline void sort(IteratorTy Start, IteratorTy End) { |
798 | #ifdef EXPENSIVE_CHECKS |
799 | std::mt19937 Generator(std::random_device{}()); |
800 | std::shuffle(Start, End, Generator); |
801 | #endif |
802 | std::sort(Start, End); |
803 | } |
804 | |
805 | template <typename IteratorTy, typename Compare> |
806 | inline void sort(IteratorTy Start, IteratorTy End, Compare Comp) { |
807 | #ifdef EXPENSIVE_CHECKS |
808 | std::mt19937 Generator(std::random_device{}()); |
809 | std::shuffle(Start, End, Generator); |
810 | #endif |
811 | std::sort(Start, End, Comp); |
812 | } |
813 | |
814 | //===----------------------------------------------------------------------===// |
815 | // Extra additions to <algorithm> |
816 | //===----------------------------------------------------------------------===// |
817 | |
818 | /// For a container of pointers, deletes the pointers and then clears the |
819 | /// container. |
820 | template<typename Container> |
821 | void DeleteContainerPointers(Container &C) { |
822 | for (auto V : C) |
823 | delete V; |
824 | C.clear(); |
825 | } |
826 | |
827 | /// In a container of pairs (usually a map) whose second element is a pointer, |
828 | /// deletes the second elements and then clears the container. |
829 | template<typename Container> |
830 | void DeleteContainerSeconds(Container &C) { |
831 | for (auto &V : C) |
832 | delete V.second; |
833 | C.clear(); |
834 | } |
835 | |
836 | /// Provide wrappers to std::for_each which take ranges instead of having to |
837 | /// pass begin/end explicitly. |
838 | template <typename R, typename UnaryPredicate> |
839 | UnaryPredicate for_each(R &&Range, UnaryPredicate P) { |
840 | return std::for_each(adl_begin(Range), adl_end(Range), P); |
841 | } |
842 | |
843 | /// Provide wrappers to std::all_of which take ranges instead of having to pass |
844 | /// begin/end explicitly. |
845 | template <typename R, typename UnaryPredicate> |
846 | bool all_of(R &&Range, UnaryPredicate P) { |
847 | return std::all_of(adl_begin(Range), adl_end(Range), P); |
848 | } |
849 | |
850 | /// Provide wrappers to std::any_of which take ranges instead of having to pass |
851 | /// begin/end explicitly. |
852 | template <typename R, typename UnaryPredicate> |
853 | bool any_of(R &&Range, UnaryPredicate P) { |
854 | return std::any_of(adl_begin(Range), adl_end(Range), P); |
855 | } |
856 | |
857 | /// Provide wrappers to std::none_of which take ranges instead of having to pass |
858 | /// begin/end explicitly. |
859 | template <typename R, typename UnaryPredicate> |
860 | bool none_of(R &&Range, UnaryPredicate P) { |
861 | return std::none_of(adl_begin(Range), adl_end(Range), P); |
862 | } |
863 | |
864 | /// Provide wrappers to std::find which take ranges instead of having to pass |
865 | /// begin/end explicitly. |
866 | template <typename R, typename T> |
867 | auto find(R &&Range, const T &Val) -> decltype(adl_begin(Range)) { |
868 | return std::find(adl_begin(Range), adl_end(Range), Val); |
869 | } |
870 | |
871 | /// Provide wrappers to std::find_if which take ranges instead of having to pass |
872 | /// begin/end explicitly. |
873 | template <typename R, typename UnaryPredicate> |
874 | auto find_if(R &&Range, UnaryPredicate P) -> decltype(adl_begin(Range)) { |
875 | return std::find_if(adl_begin(Range), adl_end(Range), P); |
876 | } |
877 | |
878 | template <typename R, typename UnaryPredicate> |
879 | auto find_if_not(R &&Range, UnaryPredicate P) -> decltype(adl_begin(Range)) { |
880 | return std::find_if_not(adl_begin(Range), adl_end(Range), P); |
881 | } |
882 | |
883 | /// Provide wrappers to std::remove_if which take ranges instead of having to |
884 | /// pass begin/end explicitly. |
885 | template <typename R, typename UnaryPredicate> |
886 | auto remove_if(R &&Range, UnaryPredicate P) -> decltype(adl_begin(Range)) { |
887 | return std::remove_if(adl_begin(Range), adl_end(Range), P); |
888 | } |
889 | |
890 | /// Provide wrappers to std::copy_if which take ranges instead of having to |
891 | /// pass begin/end explicitly. |
892 | template <typename R, typename OutputIt, typename UnaryPredicate> |
893 | OutputIt copy_if(R &&Range, OutputIt Out, UnaryPredicate P) { |
894 | return std::copy_if(adl_begin(Range), adl_end(Range), Out, P); |
895 | } |
896 | |
897 | template <typename R, typename OutputIt> |
898 | OutputIt copy(R &&Range, OutputIt Out) { |
899 | return std::copy(adl_begin(Range), adl_end(Range), Out); |
900 | } |
901 | |
902 | /// Wrapper function around std::find to detect if an element exists |
903 | /// in a container. |
904 | template <typename R, typename E> |
905 | bool is_contained(R &&Range, const E &Element) { |
906 | return std::find(adl_begin(Range), adl_end(Range), Element) != adl_end(Range); |
907 | } |
908 | |
909 | /// Wrapper function around std::count to count the number of times an element |
910 | /// \p Element occurs in the given range \p Range. |
911 | template <typename R, typename E> |
912 | auto count(R &&Range, const E &Element) -> |
913 | typename std::iterator_traits<decltype(adl_begin(Range))>::difference_type { |
914 | return std::count(adl_begin(Range), adl_end(Range), Element); |
915 | } |
916 | |
917 | /// Wrapper function around std::count_if to count the number of times an |
918 | /// element satisfying a given predicate occurs in a range. |
919 | template <typename R, typename UnaryPredicate> |
920 | auto count_if(R &&Range, UnaryPredicate P) -> |
921 | typename std::iterator_traits<decltype(adl_begin(Range))>::difference_type { |
922 | return std::count_if(adl_begin(Range), adl_end(Range), P); |
923 | } |
924 | |
925 | /// Wrapper function around std::transform to apply a function to a range and |
926 | /// store the result elsewhere. |
927 | template <typename R, typename OutputIt, typename UnaryPredicate> |
928 | OutputIt transform(R &&Range, OutputIt d_first, UnaryPredicate P) { |
929 | return std::transform(adl_begin(Range), adl_end(Range), d_first, P); |
930 | } |
931 | |
932 | /// Provide wrappers to std::partition which take ranges instead of having to |
933 | /// pass begin/end explicitly. |
934 | template <typename R, typename UnaryPredicate> |
935 | auto partition(R &&Range, UnaryPredicate P) -> decltype(adl_begin(Range)) { |
936 | return std::partition(adl_begin(Range), adl_end(Range), P); |
937 | } |
938 | |
939 | /// Provide wrappers to std::lower_bound which take ranges instead of having to |
940 | /// pass begin/end explicitly. |
941 | template <typename R, typename ForwardIt> |
942 | auto lower_bound(R &&Range, ForwardIt I) -> decltype(adl_begin(Range)) { |
943 | return std::lower_bound(adl_begin(Range), adl_end(Range), I); |
944 | } |
945 | |
946 | /// \brief Given a range of type R, iterate the entire range and return a |
947 | /// SmallVector with elements of the vector. This is useful, for example, |
948 | /// when you want to iterate a range and then sort the results. |
949 | template <unsigned Size, typename R> |
950 | SmallVector<typename std::remove_const<detail::ValueOfRange<R>>::type, Size> |
951 | to_vector(R &&Range) { |
952 | return {adl_begin(Range), adl_end(Range)}; |
953 | } |
954 | |
955 | /// Provide a container algorithm similar to C++ Library Fundamentals v2's |
956 | /// `erase_if` which is equivalent to: |
957 | /// |
958 | /// C.erase(remove_if(C, pred), C.end()); |
959 | /// |
960 | /// This version works for any container with an erase method call accepting |
961 | /// two iterators. |
962 | template <typename Container, typename UnaryPredicate> |
963 | void erase_if(Container &C, UnaryPredicate P) { |
964 | C.erase(remove_if(C, P), C.end()); |
965 | } |
966 | |
967 | //===----------------------------------------------------------------------===// |
968 | // Extra additions to <memory> |
969 | //===----------------------------------------------------------------------===// |
970 | |
971 | // Implement make_unique according to N3656. |
972 | |
973 | /// \brief Constructs a `new T()` with the given args and returns a |
974 | /// `unique_ptr<T>` which owns the object. |
975 | /// |
976 | /// Example: |
977 | /// |
978 | /// auto p = make_unique<int>(); |
979 | /// auto p = make_unique<std::tuple<int, int>>(0, 1); |
980 | template <class T, class... Args> |
981 | typename std::enable_if<!std::is_array<T>::value, std::unique_ptr<T>>::type |
982 | make_unique(Args &&... args) { |
983 | return std::unique_ptr<T>(new T(std::forward<Args>(args)...)); |
984 | } |
985 | |
986 | /// \brief Constructs a `new T[n]` with the given args and returns a |
987 | /// `unique_ptr<T[]>` which owns the object. |
988 | /// |
989 | /// \param n size of the new array. |
990 | /// |
991 | /// Example: |
992 | /// |
993 | /// auto p = make_unique<int[]>(2); // value-initializes the array with 0's. |
994 | template <class T> |
995 | typename std::enable_if<std::is_array<T>::value && std::extent<T>::value == 0, |
996 | std::unique_ptr<T>>::type |
997 | make_unique(size_t n) { |
998 | return std::unique_ptr<T>(new typename std::remove_extent<T>::type[n]()); |
999 | } |
1000 | |
1001 | /// This function isn't used and is only here to provide better compile errors. |
1002 | template <class T, class... Args> |
1003 | typename std::enable_if<std::extent<T>::value != 0>::type |
1004 | make_unique(Args &&...) = delete; |
1005 | |
1006 | struct FreeDeleter { |
1007 | void operator()(void* v) { |
1008 | ::free(v); |
1009 | } |
1010 | }; |
1011 | |
1012 | template<typename First, typename Second> |
1013 | struct pair_hash { |
1014 | size_t operator()(const std::pair<First, Second> &P) const { |
1015 | return std::hash<First>()(P.first) * 31 + std::hash<Second>()(P.second); |
1016 | } |
1017 | }; |
1018 | |
1019 | /// A functor like C++14's std::less<void> in its absence. |
1020 | struct less { |
1021 | template <typename A, typename B> bool operator()(A &&a, B &&b) const { |
1022 | return std::forward<A>(a) < std::forward<B>(b); |
1023 | } |
1024 | }; |
1025 | |
1026 | /// A functor like C++14's std::equal<void> in its absence. |
1027 | struct equal { |
1028 | template <typename A, typename B> bool operator()(A &&a, B &&b) const { |
1029 | return std::forward<A>(a) == std::forward<B>(b); |
1030 | } |
1031 | }; |
1032 | |
1033 | /// Binary functor that adapts to any other binary functor after dereferencing |
1034 | /// operands. |
1035 | template <typename T> struct deref { |
1036 | T func; |
1037 | |
1038 | // Could be further improved to cope with non-derivable functors and |
1039 | // non-binary functors (should be a variadic template member function |
1040 | // operator()). |
1041 | template <typename A, typename B> |
1042 | auto operator()(A &lhs, B &rhs) const -> decltype(func(*lhs, *rhs)) { |
1043 | assert(lhs)(static_cast <bool> (lhs) ? void (0) : __assert_fail ("lhs" , "/build/llvm-toolchain-snapshot-7~svn329677/include/llvm/ADT/STLExtras.h" , 1043, __extension__ __PRETTY_FUNCTION__)); |
1044 | assert(rhs)(static_cast <bool> (rhs) ? void (0) : __assert_fail ("rhs" , "/build/llvm-toolchain-snapshot-7~svn329677/include/llvm/ADT/STLExtras.h" , 1044, __extension__ __PRETTY_FUNCTION__)); |
1045 | return func(*lhs, *rhs); |
1046 | } |
1047 | }; |
1048 | |
1049 | namespace detail { |
1050 | |
1051 | template <typename R> class enumerator_iter; |
1052 | |
1053 | template <typename R> struct result_pair { |
1054 | friend class enumerator_iter<R>; |
1055 | |
1056 | result_pair() = default; |
1057 | result_pair(std::size_t Index, IterOfRange<R> Iter) |
1058 | : Index(Index), Iter(Iter) {} |
1059 | |
1060 | result_pair<R> &operator=(const result_pair<R> &Other) { |
1061 | Index = Other.Index; |
1062 | Iter = Other.Iter; |
1063 | return *this; |
1064 | } |
1065 | |
1066 | std::size_t index() const { return Index; } |
1067 | const ValueOfRange<R> &value() const { return *Iter; } |
1068 | ValueOfRange<R> &value() { return *Iter; } |
1069 | |
1070 | private: |
1071 | std::size_t Index = std::numeric_limits<std::size_t>::max(); |
1072 | IterOfRange<R> Iter; |
1073 | }; |
1074 | |
1075 | template <typename R> |
1076 | class enumerator_iter |
1077 | : public iterator_facade_base< |
1078 | enumerator_iter<R>, std::forward_iterator_tag, result_pair<R>, |
1079 | typename std::iterator_traits<IterOfRange<R>>::difference_type, |
1080 | typename std::iterator_traits<IterOfRange<R>>::pointer, |
1081 | typename std::iterator_traits<IterOfRange<R>>::reference> { |
1082 | using result_type = result_pair<R>; |
1083 | |
1084 | public: |
1085 | explicit enumerator_iter(IterOfRange<R> EndIter) |
1086 | : Result(std::numeric_limits<size_t>::max(), EndIter) {} |
1087 | |
1088 | enumerator_iter(std::size_t Index, IterOfRange<R> Iter) |
1089 | : Result(Index, Iter) {} |
1090 | |
1091 | result_type &operator*() { return Result; } |
1092 | const result_type &operator*() const { return Result; } |
1093 | |
1094 | enumerator_iter<R> &operator++() { |
1095 | assert(Result.Index != std::numeric_limits<size_t>::max())(static_cast <bool> (Result.Index != std::numeric_limits <size_t>::max()) ? void (0) : __assert_fail ("Result.Index != std::numeric_limits<size_t>::max()" , "/build/llvm-toolchain-snapshot-7~svn329677/include/llvm/ADT/STLExtras.h" , 1095, __extension__ __PRETTY_FUNCTION__)); |
1096 | ++Result.Iter; |
1097 | ++Result.Index; |
1098 | return *this; |
1099 | } |
1100 | |
1101 | bool operator==(const enumerator_iter<R> &RHS) const { |
1102 | // Don't compare indices here, only iterators. It's possible for an end |
1103 | // iterator to have different indices depending on whether it was created |
1104 | // by calling std::end() versus incrementing a valid iterator. |
1105 | return Result.Iter == RHS.Result.Iter; |
1106 | } |
1107 | |
1108 | enumerator_iter<R> &operator=(const enumerator_iter<R> &Other) { |
1109 | Result = Other.Result; |
1110 | return *this; |
1111 | } |
1112 | |
1113 | private: |
1114 | result_type Result; |
1115 | }; |
1116 | |
1117 | template <typename R> class enumerator { |
1118 | public: |
1119 | explicit enumerator(R &&Range) : TheRange(std::forward<R>(Range)) {} |
1120 | |
1121 | enumerator_iter<R> begin() { |
1122 | return enumerator_iter<R>(0, std::begin(TheRange)); |
1123 | } |
1124 | |
1125 | enumerator_iter<R> end() { |
1126 | return enumerator_iter<R>(std::end(TheRange)); |
1127 | } |
1128 | |
1129 | private: |
1130 | R TheRange; |
1131 | }; |
1132 | |
1133 | } // end namespace detail |
1134 | |
1135 | /// Given an input range, returns a new range whose values are are pair (A,B) |
1136 | /// such that A is the 0-based index of the item in the sequence, and B is |
1137 | /// the value from the original sequence. Example: |
1138 | /// |
1139 | /// std::vector<char> Items = {'A', 'B', 'C', 'D'}; |
1140 | /// for (auto X : enumerate(Items)) { |
1141 | /// printf("Item %d - %c\n", X.index(), X.value()); |
1142 | /// } |
1143 | /// |
1144 | /// Output: |
1145 | /// Item 0 - A |
1146 | /// Item 1 - B |
1147 | /// Item 2 - C |
1148 | /// Item 3 - D |
1149 | /// |
1150 | template <typename R> detail::enumerator<R> enumerate(R &&TheRange) { |
1151 | return detail::enumerator<R>(std::forward<R>(TheRange)); |
1152 | } |
1153 | |
1154 | namespace detail { |
1155 | |
1156 | template <typename F, typename Tuple, std::size_t... I> |
1157 | auto apply_tuple_impl(F &&f, Tuple &&t, index_sequence<I...>) |
1158 | -> decltype(std::forward<F>(f)(std::get<I>(std::forward<Tuple>(t))...)) { |
1159 | return std::forward<F>(f)(std::get<I>(std::forward<Tuple>(t))...); |
1160 | } |
1161 | |
1162 | } // end namespace detail |
1163 | |
1164 | /// Given an input tuple (a1, a2, ..., an), pass the arguments of the |
1165 | /// tuple variadically to f as if by calling f(a1, a2, ..., an) and |
1166 | /// return the result. |
1167 | template <typename F, typename Tuple> |
1168 | auto apply_tuple(F &&f, Tuple &&t) -> decltype(detail::apply_tuple_impl( |
1169 | std::forward<F>(f), std::forward<Tuple>(t), |
1170 | build_index_impl< |
1171 | std::tuple_size<typename std::decay<Tuple>::type>::value>{})) { |
1172 | using Indices = build_index_impl< |
1173 | std::tuple_size<typename std::decay<Tuple>::type>::value>; |
1174 | |
1175 | return detail::apply_tuple_impl(std::forward<F>(f), std::forward<Tuple>(t), |
1176 | Indices{}); |
1177 | } |
1178 | |
1179 | } // end namespace llvm |
1180 | |
1181 | #endif // LLVM_ADT_STLEXTRAS_H |
1 | // unique_ptr implementation -*- C++ -*- |
2 | |
3 | // Copyright (C) 2008-2017 Free Software Foundation, Inc. |
4 | // |
5 | // This file is part of the GNU ISO C++ Library. This library is free |
6 | // software; you can redistribute it and/or modify it under the |
7 | // terms of the GNU General Public License as published by the |
8 | // Free Software Foundation; either version 3, or (at your option) |
9 | // any later version. |
10 | |
11 | // This library is distributed in the hope that it will be useful, |
12 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | // GNU General Public License for more details. |
15 | |
16 | // Under Section 7 of GPL version 3, you are granted additional |
17 | // permissions described in the GCC Runtime Library Exception, version |
18 | // 3.1, as published by the Free Software Foundation. |
19 | |
20 | // You should have received a copy of the GNU General Public License and |
21 | // a copy of the GCC Runtime Library Exception along with this program; |
22 | // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
23 | // <http://www.gnu.org/licenses/>. |
24 | |
25 | /** @file bits/unique_ptr.h |
26 | * This is an internal header file, included by other library headers. |
27 | * Do not attempt to use it directly. @headername{memory} |
28 | */ |
29 | |
30 | #ifndef _UNIQUE_PTR_H1 |
31 | #define _UNIQUE_PTR_H1 1 |
32 | |
33 | #include <bits/c++config.h> |
34 | #include <debug/assertions.h> |
35 | #include <type_traits> |
36 | #include <utility> |
37 | #include <tuple> |
38 | #include <bits/stl_function.h> |
39 | #include <bits/functional_hash.h> |
40 | |
41 | namespace std _GLIBCXX_VISIBILITY(default)__attribute__ ((__visibility__ ("default"))) |
42 | { |
43 | _GLIBCXX_BEGIN_NAMESPACE_VERSION |
44 | |
45 | /** |
46 | * @addtogroup pointer_abstractions |
47 | * @{ |
48 | */ |
49 | |
50 | #if _GLIBCXX_USE_DEPRECATED1 |
51 | template<typename> class auto_ptr; |
52 | #endif |
53 | |
54 | /// Primary template of default_delete, used by unique_ptr |
55 | template<typename _Tp> |
56 | struct default_delete |
57 | { |
58 | /// Default constructor |
59 | constexpr default_delete() noexcept = default; |
60 | |
61 | /** @brief Converting constructor. |
62 | * |
63 | * Allows conversion from a deleter for arrays of another type, @p _Up, |
64 | * only if @p _Up* is convertible to @p _Tp*. |
65 | */ |
66 | template<typename _Up, typename = typename |
67 | enable_if<is_convertible<_Up*, _Tp*>::value>::type> |
68 | default_delete(const default_delete<_Up>&) noexcept { } |
69 | |
70 | /// Calls @c delete @p __ptr |
71 | void |
72 | operator()(_Tp* __ptr) const |
73 | { |
74 | static_assert(!is_void<_Tp>::value, |
75 | "can't delete pointer to incomplete type"); |
76 | static_assert(sizeof(_Tp)>0, |
77 | "can't delete pointer to incomplete type"); |
78 | delete __ptr; |
79 | } |
80 | }; |
81 | |
82 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
83 | // DR 740 - omit specialization for array objects with a compile time length |
84 | /// Specialization for arrays, default_delete. |
85 | template<typename _Tp> |
86 | struct default_delete<_Tp[]> |
87 | { |
88 | public: |
89 | /// Default constructor |
90 | constexpr default_delete() noexcept = default; |
91 | |
92 | /** @brief Converting constructor. |
93 | * |
94 | * Allows conversion from a deleter for arrays of another type, such as |
95 | * a const-qualified version of @p _Tp. |
96 | * |
97 | * Conversions from types derived from @c _Tp are not allowed because |
98 | * it is unsafe to @c delete[] an array of derived types through a |
99 | * pointer to the base type. |
100 | */ |
101 | template<typename _Up, typename = typename |
102 | enable_if<is_convertible<_Up(*)[], _Tp(*)[]>::value>::type> |
103 | default_delete(const default_delete<_Up[]>&) noexcept { } |
104 | |
105 | /// Calls @c delete[] @p __ptr |
106 | template<typename _Up> |
107 | typename enable_if<is_convertible<_Up(*)[], _Tp(*)[]>::value>::type |
108 | operator()(_Up* __ptr) const |
109 | { |
110 | static_assert(sizeof(_Tp)>0, |
111 | "can't delete pointer to incomplete type"); |
112 | delete [] __ptr; |
113 | } |
114 | }; |
115 | |
116 | template <typename _Tp, typename _Dp> |
117 | class __uniq_ptr_impl |
118 | { |
119 | template <typename _Up, typename _Ep, typename = void> |
120 | struct _Ptr |
121 | { |
122 | using type = _Up*; |
123 | }; |
124 | |
125 | template <typename _Up, typename _Ep> |
126 | struct |
127 | _Ptr<_Up, _Ep, __void_t<typename remove_reference<_Ep>::type::pointer>> |
128 | { |
129 | using type = typename remove_reference<_Ep>::type::pointer; |
130 | }; |
131 | |
132 | public: |
133 | using _DeleterConstraint = enable_if< |
134 | __and_<__not_<is_pointer<_Dp>>, |
135 | is_default_constructible<_Dp>>::value>; |
136 | |
137 | using pointer = typename _Ptr<_Tp, _Dp>::type; |
138 | |
139 | __uniq_ptr_impl() = default; |
140 | __uniq_ptr_impl(pointer __p) : _M_t() { _M_ptr() = __p; } |
141 | |
142 | template<typename _Del> |
143 | __uniq_ptr_impl(pointer __p, _Del&& __d) |
144 | : _M_t(__p, std::forward<_Del>(__d)) { } |
145 | |
146 | pointer& _M_ptr() { return std::get<0>(_M_t); } |
147 | pointer _M_ptr() const { return std::get<0>(_M_t); } |
148 | _Dp& _M_deleter() { return std::get<1>(_M_t); } |
149 | const _Dp& _M_deleter() const { return std::get<1>(_M_t); } |
150 | |
151 | private: |
152 | tuple<pointer, _Dp> _M_t; |
153 | }; |
154 | |
155 | /// 20.7.1.2 unique_ptr for single objects. |
156 | template <typename _Tp, typename _Dp = default_delete<_Tp>> |
157 | class unique_ptr |
158 | { |
159 | template <class _Up> |
160 | using _DeleterConstraint = |
161 | typename __uniq_ptr_impl<_Tp, _Up>::_DeleterConstraint::type; |
162 | |
163 | __uniq_ptr_impl<_Tp, _Dp> _M_t; |
164 | |
165 | public: |
166 | using pointer = typename __uniq_ptr_impl<_Tp, _Dp>::pointer; |
167 | using element_type = _Tp; |
168 | using deleter_type = _Dp; |
169 | |
170 | // helper template for detecting a safe conversion from another |
171 | // unique_ptr |
172 | template<typename _Up, typename _Ep> |
173 | using __safe_conversion_up = __and_< |
174 | is_convertible<typename unique_ptr<_Up, _Ep>::pointer, pointer>, |
175 | __not_<is_array<_Up>>, |
176 | __or_<__and_<is_reference<deleter_type>, |
177 | is_same<deleter_type, _Ep>>, |
178 | __and_<__not_<is_reference<deleter_type>>, |
179 | is_convertible<_Ep, deleter_type>> |
180 | > |
181 | >; |
182 | |
183 | // Constructors. |
184 | |
185 | /// Default constructor, creates a unique_ptr that owns nothing. |
186 | template <typename _Up = _Dp, |
187 | typename = _DeleterConstraint<_Up>> |
188 | constexpr unique_ptr() noexcept |
189 | : _M_t() |
190 | { } |
191 | |
192 | /** Takes ownership of a pointer. |
193 | * |
194 | * @param __p A pointer to an object of @c element_type |
195 | * |
196 | * The deleter will be value-initialized. |
197 | */ |
198 | template <typename _Up = _Dp, |
199 | typename = _DeleterConstraint<_Up>> |
200 | explicit |
201 | unique_ptr(pointer __p) noexcept |
202 | : _M_t(__p) |
203 | { } |
204 | |
205 | /** Takes ownership of a pointer. |
206 | * |
207 | * @param __p A pointer to an object of @c element_type |
208 | * @param __d A reference to a deleter. |
209 | * |
210 | * The deleter will be initialized with @p __d |
211 | */ |
212 | unique_ptr(pointer __p, |
213 | typename conditional<is_reference<deleter_type>::value, |
214 | deleter_type, const deleter_type&>::type __d) noexcept |
215 | : _M_t(__p, __d) { } |
216 | |
217 | /** Takes ownership of a pointer. |
218 | * |
219 | * @param __p A pointer to an object of @c element_type |
220 | * @param __d An rvalue reference to a deleter. |
221 | * |
222 | * The deleter will be initialized with @p std::move(__d) |
223 | */ |
224 | unique_ptr(pointer __p, |
225 | typename remove_reference<deleter_type>::type&& __d) noexcept |
226 | : _M_t(std::move(__p), std::move(__d)) |
227 | { static_assert(!std::is_reference<deleter_type>::value, |
228 | "rvalue deleter bound to reference"); } |
229 | |
230 | /// Creates a unique_ptr that owns nothing. |
231 | template <typename _Up = _Dp, |
232 | typename = _DeleterConstraint<_Up>> |
233 | constexpr unique_ptr(nullptr_t) noexcept : unique_ptr() { } |
234 | |
235 | // Move constructors. |
236 | |
237 | /// Move constructor. |
238 | unique_ptr(unique_ptr&& __u) noexcept |
239 | : _M_t(__u.release(), std::forward<deleter_type>(__u.get_deleter())) { } |
240 | |
241 | /** @brief Converting constructor from another type |
242 | * |
243 | * Requires that the pointer owned by @p __u is convertible to the |
244 | * type of pointer owned by this object, @p __u does not own an array, |
245 | * and @p __u has a compatible deleter type. |
246 | */ |
247 | template<typename _Up, typename _Ep, typename = _Require< |
248 | __safe_conversion_up<_Up, _Ep>, |
249 | typename conditional<is_reference<_Dp>::value, |
250 | is_same<_Ep, _Dp>, |
251 | is_convertible<_Ep, _Dp>>::type>> |
252 | unique_ptr(unique_ptr<_Up, _Ep>&& __u) noexcept |
253 | : _M_t(__u.release(), std::forward<_Ep>(__u.get_deleter())) |
254 | { } |
255 | |
256 | #if _GLIBCXX_USE_DEPRECATED1 |
257 | /// Converting constructor from @c auto_ptr |
258 | template<typename _Up, typename = _Require< |
259 | is_convertible<_Up*, _Tp*>, is_same<_Dp, default_delete<_Tp>>>> |
260 | unique_ptr(auto_ptr<_Up>&& __u) noexcept; |
261 | #endif |
262 | |
263 | /// Destructor, invokes the deleter if the stored pointer is not null. |
264 | ~unique_ptr() noexcept |
265 | { |
266 | auto& __ptr = _M_t._M_ptr(); |
267 | if (__ptr != nullptr) |
268 | get_deleter()(__ptr); |
269 | __ptr = pointer(); |
270 | } |
271 | |
272 | // Assignment. |
273 | |
274 | /** @brief Move assignment operator. |
275 | * |
276 | * @param __u The object to transfer ownership from. |
277 | * |
278 | * Invokes the deleter first if this object owns a pointer. |
279 | */ |
280 | unique_ptr& |
281 | operator=(unique_ptr&& __u) noexcept |
282 | { |
283 | reset(__u.release()); |
284 | get_deleter() = std::forward<deleter_type>(__u.get_deleter()); |
285 | return *this; |
286 | } |
287 | |
288 | /** @brief Assignment from another type. |
289 | * |
290 | * @param __u The object to transfer ownership from, which owns a |
291 | * convertible pointer to a non-array object. |
292 | * |
293 | * Invokes the deleter first if this object owns a pointer. |
294 | */ |
295 | template<typename _Up, typename _Ep> |
296 | typename enable_if< __and_< |
297 | __safe_conversion_up<_Up, _Ep>, |
298 | is_assignable<deleter_type&, _Ep&&> |
299 | >::value, |
300 | unique_ptr&>::type |
301 | operator=(unique_ptr<_Up, _Ep>&& __u) noexcept |
302 | { |
303 | reset(__u.release()); |
304 | get_deleter() = std::forward<_Ep>(__u.get_deleter()); |
305 | return *this; |
306 | } |
307 | |
308 | /// Reset the %unique_ptr to empty, invoking the deleter if necessary. |
309 | unique_ptr& |
310 | operator=(nullptr_t) noexcept |
311 | { |
312 | reset(); |
313 | return *this; |
314 | } |
315 | |
316 | // Observers. |
317 | |
318 | /// Dereference the stored pointer. |
319 | typename add_lvalue_reference<element_type>::type |
320 | operator*() const |
321 | { |
322 | __glibcxx_assert(get() != pointer()); |
323 | return *get(); |
324 | } |
325 | |
326 | /// Return the stored pointer. |
327 | pointer |
328 | operator->() const noexcept |
329 | { |
330 | _GLIBCXX_DEBUG_PEDASSERT(get() != pointer()); |
331 | return get(); |
332 | } |
333 | |
334 | /// Return the stored pointer. |
335 | pointer |
336 | get() const noexcept |
337 | { return _M_t._M_ptr(); } |
338 | |
339 | /// Return a reference to the stored deleter. |
340 | deleter_type& |
341 | get_deleter() noexcept |
342 | { return _M_t._M_deleter(); } |
343 | |
344 | /// Return a reference to the stored deleter. |
345 | const deleter_type& |
346 | get_deleter() const noexcept |
347 | { return _M_t._M_deleter(); } |
348 | |
349 | /// Return @c true if the stored pointer is not null. |
350 | explicit operator bool() const noexcept |
351 | { return get() == pointer() ? false : true; } |
352 | |
353 | // Modifiers. |
354 | |
355 | /// Release ownership of any stored pointer. |
356 | pointer |
357 | release() noexcept |
358 | { |
359 | pointer __p = get(); |
360 | _M_t._M_ptr() = pointer(); |
361 | return __p; |
362 | } |
363 | |
364 | /** @brief Replace the stored pointer. |
365 | * |
366 | * @param __p The new pointer to store. |
367 | * |
368 | * The deleter will be invoked if a pointer is already owned. |
369 | */ |
370 | void |
371 | reset(pointer __p = pointer()) noexcept |
372 | { |
373 | using std::swap; |
374 | swap(_M_t._M_ptr(), __p); |
375 | if (__p != pointer()) |
376 | get_deleter()(__p); |
377 | } |
378 | |
379 | /// Exchange the pointer and deleter with another object. |
380 | void |
381 | swap(unique_ptr& __u) noexcept |
382 | { |
383 | using std::swap; |
384 | swap(_M_t, __u._M_t); |
385 | } |
386 | |
387 | // Disable copy from lvalue. |
388 | unique_ptr(const unique_ptr&) = delete; |
389 | unique_ptr& operator=(const unique_ptr&) = delete; |
390 | }; |
391 | |
392 | /// 20.7.1.3 unique_ptr for array objects with a runtime length |
393 | // [unique.ptr.runtime] |
394 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
395 | // DR 740 - omit specialization for array objects with a compile time length |
396 | template<typename _Tp, typename _Dp> |
397 | class unique_ptr<_Tp[], _Dp> |
398 | { |
399 | template <typename _Up> |
400 | using _DeleterConstraint = |
401 | typename __uniq_ptr_impl<_Tp, _Up>::_DeleterConstraint::type; |
402 | |
403 | __uniq_ptr_impl<_Tp, _Dp> _M_t; |
404 | |
405 | template<typename _Up> |
406 | using __remove_cv = typename remove_cv<_Up>::type; |
407 | |
408 | // like is_base_of<_Tp, _Up> but false if unqualified types are the same |
409 | template<typename _Up> |
410 | using __is_derived_Tp |
411 | = __and_< is_base_of<_Tp, _Up>, |
412 | __not_<is_same<__remove_cv<_Tp>, __remove_cv<_Up>>> >; |
413 | |
414 | public: |
415 | using pointer = typename __uniq_ptr_impl<_Tp, _Dp>::pointer; |
416 | using element_type = _Tp; |
417 | using deleter_type = _Dp; |
418 | |
419 | // helper template for detecting a safe conversion from another |
420 | // unique_ptr |
421 | template<typename _Up, typename _Ep, |
422 | typename _Up_up = unique_ptr<_Up, _Ep>, |
423 | typename _Up_element_type = typename _Up_up::element_type> |
424 | using __safe_conversion_up = __and_< |
425 | is_array<_Up>, |
426 | is_same<pointer, element_type*>, |
427 | is_same<typename _Up_up::pointer, _Up_element_type*>, |
428 | is_convertible<_Up_element_type(*)[], element_type(*)[]>, |
429 | __or_<__and_<is_reference<deleter_type>, is_same<deleter_type, _Ep>>, |
430 | __and_<__not_<is_reference<deleter_type>>, |
431 | is_convertible<_Ep, deleter_type>>> |
432 | >; |
433 | |
434 | // helper template for detecting a safe conversion from a raw pointer |
435 | template<typename _Up> |
436 | using __safe_conversion_raw = __and_< |
437 | __or_<__or_<is_same<_Up, pointer>, |
438 | is_same<_Up, nullptr_t>>, |
439 | __and_<is_pointer<_Up>, |
440 | is_same<pointer, element_type*>, |
441 | is_convertible< |
442 | typename remove_pointer<_Up>::type(*)[], |
443 | element_type(*)[]> |
444 | > |
445 | > |
446 | >; |
447 | |
448 | // Constructors. |
449 | |
450 | /// Default constructor, creates a unique_ptr that owns nothing. |
451 | template <typename _Up = _Dp, |
452 | typename = _DeleterConstraint<_Up>> |
453 | constexpr unique_ptr() noexcept |
454 | : _M_t() |
455 | { } |
456 | |
457 | /** Takes ownership of a pointer. |
458 | * |
459 | * @param __p A pointer to an array of a type safely convertible |
460 | * to an array of @c element_type |
461 | * |
462 | * The deleter will be value-initialized. |
463 | */ |
464 | template<typename _Up, |
465 | typename _Vp = _Dp, |
466 | typename = _DeleterConstraint<_Vp>, |
467 | typename = typename enable_if< |
468 | __safe_conversion_raw<_Up>::value, bool>::type> |
469 | explicit |
470 | unique_ptr(_Up __p) noexcept |
471 | : _M_t(__p) |
472 | { } |
473 | |
474 | /** Takes ownership of a pointer. |
475 | * |
476 | * @param __p A pointer to an array of a type safely convertible |
477 | * to an array of @c element_type |
478 | * @param __d A reference to a deleter. |
479 | * |
480 | * The deleter will be initialized with @p __d |
481 | */ |
482 | template<typename _Up, |
483 | typename = typename enable_if< |
484 | __safe_conversion_raw<_Up>::value, bool>::type> |
485 | unique_ptr(_Up __p, |
486 | typename conditional<is_reference<deleter_type>::value, |
487 | deleter_type, const deleter_type&>::type __d) noexcept |
488 | : _M_t(__p, __d) { } |
489 | |
490 | /** Takes ownership of a pointer. |
491 | * |
492 | * @param __p A pointer to an array of a type safely convertible |
493 | * to an array of @c element_type |
494 | * @param __d A reference to a deleter. |
495 | * |
496 | * The deleter will be initialized with @p std::move(__d) |
497 | */ |
498 | template<typename _Up, |
499 | typename = typename enable_if< |
500 | __safe_conversion_raw<_Up>::value, bool>::type> |
501 | unique_ptr(_Up __p, typename |
502 | remove_reference<deleter_type>::type&& __d) noexcept |
503 | : _M_t(std::move(__p), std::move(__d)) |
504 | { static_assert(!is_reference<deleter_type>::value, |
505 | "rvalue deleter bound to reference"); } |
506 | |
507 | /// Move constructor. |
508 | unique_ptr(unique_ptr&& __u) noexcept |
509 | : _M_t(__u.release(), std::forward<deleter_type>(__u.get_deleter())) { } |
510 | |
511 | /// Creates a unique_ptr that owns nothing. |
512 | template <typename _Up = _Dp, |
513 | typename = _DeleterConstraint<_Up>> |
514 | constexpr unique_ptr(nullptr_t) noexcept : unique_ptr() { } |
515 | |
516 | template<typename _Up, typename _Ep, |
517 | typename = _Require<__safe_conversion_up<_Up, _Ep>>> |
518 | unique_ptr(unique_ptr<_Up, _Ep>&& __u) noexcept |
519 | : _M_t(__u.release(), std::forward<_Ep>(__u.get_deleter())) |
520 | { } |
521 | |
522 | /// Destructor, invokes the deleter if the stored pointer is not null. |
523 | ~unique_ptr() |
524 | { |
525 | auto& __ptr = _M_t._M_ptr(); |
526 | if (__ptr != nullptr) |
527 | get_deleter()(__ptr); |
528 | __ptr = pointer(); |
529 | } |
530 | |
531 | // Assignment. |
532 | |
533 | /** @brief Move assignment operator. |
534 | * |
535 | * @param __u The object to transfer ownership from. |
536 | * |
537 | * Invokes the deleter first if this object owns a pointer. |
538 | */ |
539 | unique_ptr& |
540 | operator=(unique_ptr&& __u) noexcept |
541 | { |
542 | reset(__u.release()); |
543 | get_deleter() = std::forward<deleter_type>(__u.get_deleter()); |
544 | return *this; |
545 | } |
546 | |
547 | /** @brief Assignment from another type. |
548 | * |
549 | * @param __u The object to transfer ownership from, which owns a |
550 | * convertible pointer to an array object. |
551 | * |
552 | * Invokes the deleter first if this object owns a pointer. |
553 | */ |
554 | template<typename _Up, typename _Ep> |
555 | typename |
556 | enable_if<__and_<__safe_conversion_up<_Up, _Ep>, |
557 | is_assignable<deleter_type&, _Ep&&> |
558 | >::value, |
559 | unique_ptr&>::type |
560 | operator=(unique_ptr<_Up, _Ep>&& __u) noexcept |
561 | { |
562 | reset(__u.release()); |
563 | get_deleter() = std::forward<_Ep>(__u.get_deleter()); |
564 | return *this; |
565 | } |
566 | |
567 | /// Reset the %unique_ptr to empty, invoking the deleter if necessary. |
568 | unique_ptr& |
569 | operator=(nullptr_t) noexcept |
570 | { |
571 | reset(); |
572 | return *this; |
573 | } |
574 | |
575 | // Observers. |
576 | |
577 | /// Access an element of owned array. |
578 | typename std::add_lvalue_reference<element_type>::type |
579 | operator[](size_t __i) const |
580 | { |
581 | __glibcxx_assert(get() != pointer()); |
582 | return get()[__i]; |
583 | } |
584 | |
585 | /// Return the stored pointer. |
586 | pointer |
587 | get() const noexcept |
588 | { return _M_t._M_ptr(); } |
589 | |
590 | /// Return a reference to the stored deleter. |
591 | deleter_type& |
592 | get_deleter() noexcept |
593 | { return _M_t._M_deleter(); } |
594 | |
595 | /// Return a reference to the stored deleter. |
596 | const deleter_type& |
597 | get_deleter() const noexcept |
598 | { return _M_t._M_deleter(); } |
599 | |
600 | /// Return @c true if the stored pointer is not null. |
601 | explicit operator bool() const noexcept |
602 | { return get() == pointer() ? false : true; } |
603 | |
604 | // Modifiers. |
605 | |
606 | /// Release ownership of any stored pointer. |
607 | pointer |
608 | release() noexcept |
609 | { |
610 | pointer __p = get(); |
611 | _M_t._M_ptr() = pointer(); |
612 | return __p; |
613 | } |
614 | |
615 | /** @brief Replace the stored pointer. |
616 | * |
617 | * @param __p The new pointer to store. |
618 | * |
619 | * The deleter will be invoked if a pointer is already owned. |
620 | */ |
621 | template <typename _Up, |
622 | typename = _Require< |
623 | __or_<is_same<_Up, pointer>, |
624 | __and_<is_same<pointer, element_type*>, |
625 | is_pointer<_Up>, |
626 | is_convertible< |
627 | typename remove_pointer<_Up>::type(*)[], |
628 | element_type(*)[] |
629 | > |
630 | > |
631 | > |
632 | >> |
633 | void |
634 | reset(_Up __p) noexcept |
635 | { |
636 | pointer __ptr = __p; |
637 | using std::swap; |
638 | swap(_M_t._M_ptr(), __ptr); |
639 | if (__ptr != nullptr) |
640 | get_deleter()(__ptr); |
641 | } |
642 | |
643 | void reset(nullptr_t = nullptr) noexcept |
644 | { |
645 | reset(pointer()); |
646 | } |
647 | |
648 | /// Exchange the pointer and deleter with another object. |
649 | void |
650 | swap(unique_ptr& __u) noexcept |
651 | { |
652 | using std::swap; |
653 | swap(_M_t, __u._M_t); |
654 | } |
655 | |
656 | // Disable copy from lvalue. |
657 | unique_ptr(const unique_ptr&) = delete; |
658 | unique_ptr& operator=(const unique_ptr&) = delete; |
659 | }; |
660 | |
661 | template<typename _Tp, typename _Dp> |
662 | inline |
663 | #if __cplusplus201103L > 201402L || !defined(__STRICT_ANSI__1) // c++1z or gnu++11 |
664 | // Constrained free swap overload, see p0185r1 |
665 | typename enable_if<__is_swappable<_Dp>::value>::type |
666 | #else |
667 | void |
668 | #endif |
669 | swap(unique_ptr<_Tp, _Dp>& __x, |
670 | unique_ptr<_Tp, _Dp>& __y) noexcept |
671 | { __x.swap(__y); } |
672 | |
673 | #if __cplusplus201103L > 201402L || !defined(__STRICT_ANSI__1) // c++1z or gnu++11 |
674 | template<typename _Tp, typename _Dp> |
675 | typename enable_if<!__is_swappable<_Dp>::value>::type |
676 | swap(unique_ptr<_Tp, _Dp>&, |
677 | unique_ptr<_Tp, _Dp>&) = delete; |
678 | #endif |
679 | |
680 | template<typename _Tp, typename _Dp, |
681 | typename _Up, typename _Ep> |
682 | inline bool |
683 | operator==(const unique_ptr<_Tp, _Dp>& __x, |
684 | const unique_ptr<_Up, _Ep>& __y) |
685 | { return __x.get() == __y.get(); } |
686 | |
687 | template<typename _Tp, typename _Dp> |
688 | inline bool |
689 | operator==(const unique_ptr<_Tp, _Dp>& __x, nullptr_t) noexcept |
690 | { return !__x; } |
691 | |
692 | template<typename _Tp, typename _Dp> |
693 | inline bool |
694 | operator==(nullptr_t, const unique_ptr<_Tp, _Dp>& __x) noexcept |
695 | { return !__x; } |
696 | |
697 | template<typename _Tp, typename _Dp, |
698 | typename _Up, typename _Ep> |
699 | inline bool |
700 | operator!=(const unique_ptr<_Tp, _Dp>& __x, |
701 | const unique_ptr<_Up, _Ep>& __y) |
702 | { return __x.get() != __y.get(); } |
703 | |
704 | template<typename _Tp, typename _Dp> |
705 | inline bool |
706 | operator!=(const unique_ptr<_Tp, _Dp>& __x, nullptr_t) noexcept |
707 | { return (bool)__x; } |
708 | |
709 | template<typename _Tp, typename _Dp> |
710 | inline bool |
711 | operator!=(nullptr_t, const unique_ptr<_Tp, _Dp>& __x) noexcept |
712 | { return (bool)__x; } |
713 | |
714 | template<typename _Tp, typename _Dp, |
715 | typename _Up, typename _Ep> |
716 | inline bool |
717 | operator<(const unique_ptr<_Tp, _Dp>& __x, |
718 | const unique_ptr<_Up, _Ep>& __y) |
719 | { |
720 | typedef typename |
721 | std::common_type<typename unique_ptr<_Tp, _Dp>::pointer, |
722 | typename unique_ptr<_Up, _Ep>::pointer>::type _CT; |
723 | return std::less<_CT>()(__x.get(), __y.get()); |
724 | } |
725 | |
726 | template<typename _Tp, typename _Dp> |
727 | inline bool |
728 | operator<(const unique_ptr<_Tp, _Dp>& __x, nullptr_t) |
729 | { return std::less<typename unique_ptr<_Tp, _Dp>::pointer>()(__x.get(), |
730 | nullptr); } |
731 | |
732 | template<typename _Tp, typename _Dp> |
733 | inline bool |
734 | operator<(nullptr_t, const unique_ptr<_Tp, _Dp>& __x) |
735 | { return std::less<typename unique_ptr<_Tp, _Dp>::pointer>()(nullptr, |
736 | __x.get()); } |
737 | |
738 | template<typename _Tp, typename _Dp, |
739 | typename _Up, typename _Ep> |
740 | inline bool |
741 | operator<=(const unique_ptr<_Tp, _Dp>& __x, |
742 | const unique_ptr<_Up, _Ep>& __y) |
743 | { return !(__y < __x); } |
744 | |
745 | template<typename _Tp, typename _Dp> |
746 | inline bool |
747 | operator<=(const unique_ptr<_Tp, _Dp>& __x, nullptr_t) |
748 | { return !(nullptr < __x); } |
749 | |
750 | template<typename _Tp, typename _Dp> |
751 | inline bool |
752 | operator<=(nullptr_t, const unique_ptr<_Tp, _Dp>& __x) |
753 | { return !(__x < nullptr); } |
754 | |
755 | template<typename _Tp, typename _Dp, |
756 | typename _Up, typename _Ep> |
757 | inline bool |
758 | operator>(const unique_ptr<_Tp, _Dp>& __x, |
759 | const unique_ptr<_Up, _Ep>& __y) |
760 | { return (__y < __x); } |
761 | |
762 | template<typename _Tp, typename _Dp> |
763 | inline bool |
764 | operator>(const unique_ptr<_Tp, _Dp>& __x, nullptr_t) |
765 | { return std::less<typename unique_ptr<_Tp, _Dp>::pointer>()(nullptr, |
766 | __x.get()); } |
767 | |
768 | template<typename _Tp, typename _Dp> |
769 | inline bool |
770 | operator>(nullptr_t, const unique_ptr<_Tp, _Dp>& __x) |
771 | { return std::less<typename unique_ptr<_Tp, _Dp>::pointer>()(__x.get(), |
772 | nullptr); } |
773 | |
774 | template<typename _Tp, typename _Dp, |
775 | typename _Up, typename _Ep> |
776 | inline bool |
777 | operator>=(const unique_ptr<_Tp, _Dp>& __x, |
778 | const unique_ptr<_Up, _Ep>& __y) |
779 | { return !(__x < __y); } |
780 | |
781 | template<typename _Tp, typename _Dp> |
782 | inline bool |
783 | operator>=(const unique_ptr<_Tp, _Dp>& __x, nullptr_t) |
784 | { return !(__x < nullptr); } |
785 | |
786 | template<typename _Tp, typename _Dp> |
787 | inline bool |
788 | operator>=(nullptr_t, const unique_ptr<_Tp, _Dp>& __x) |
789 | { return !(nullptr < __x); } |
790 | |
791 | /// std::hash specialization for unique_ptr. |
792 | template<typename _Tp, typename _Dp> |
793 | struct hash<unique_ptr<_Tp, _Dp>> |
794 | : public __hash_base<size_t, unique_ptr<_Tp, _Dp>>, |
795 | private __poison_hash<typename unique_ptr<_Tp, _Dp>::pointer> |
796 | { |
797 | size_t |
798 | operator()(const unique_ptr<_Tp, _Dp>& __u) const noexcept |
799 | { |
800 | typedef unique_ptr<_Tp, _Dp> _UP; |
801 | return std::hash<typename _UP::pointer>()(__u.get()); |
802 | } |
803 | }; |
804 | |
805 | #if __cplusplus201103L > 201103L |
806 | |
807 | #define __cpp_lib_make_unique 201304 |
808 | |
809 | template<typename _Tp> |
810 | struct _MakeUniq |
811 | { typedef unique_ptr<_Tp> __single_object; }; |
812 | |
813 | template<typename _Tp> |
814 | struct _MakeUniq<_Tp[]> |
815 | { typedef unique_ptr<_Tp[]> __array; }; |
816 | |
817 | template<typename _Tp, size_t _Bound> |
818 | struct _MakeUniq<_Tp[_Bound]> |
819 | { struct __invalid_type { }; }; |
820 | |
821 | /// std::make_unique for single objects |
822 | template<typename _Tp, typename... _Args> |
823 | inline typename _MakeUniq<_Tp>::__single_object |
824 | make_unique(_Args&&... __args) |
825 | { return unique_ptr<_Tp>(new _Tp(std::forward<_Args>(__args)...)); } |
826 | |
827 | /// std::make_unique for arrays of unknown bound |
828 | template<typename _Tp> |
829 | inline typename _MakeUniq<_Tp>::__array |
830 | make_unique(size_t __num) |
831 | { return unique_ptr<_Tp>(new remove_extent_t<_Tp>[__num]()); } |
832 | |
833 | /// Disable std::make_unique for arrays of known bound |
834 | template<typename _Tp, typename... _Args> |
835 | inline typename _MakeUniq<_Tp>::__invalid_type |
836 | make_unique(_Args&&...) = delete; |
837 | #endif |
838 | |
839 | // @} group pointer_abstractions |
840 | |
841 | _GLIBCXX_END_NAMESPACE_VERSION |
842 | } // namespace |
843 | |
844 | #endif /* _UNIQUE_PTR_H */ |