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Reid Spencer5f016e22007-07-11 17:01:13 +00001//===--- SemaDeclSpec.cpp - Declaration Specifier Semantic Analysis -------===//
2//
3// The LLVM Compiler Infrastructure
4//
Chris Lattner0bc735f2007-12-29 19:59:25 +00005// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
Reid Spencer5f016e22007-07-11 17:01:13 +00007//
8//===----------------------------------------------------------------------===//
9//
10// This file implements semantic analysis for declaration specifiers.
11//
12//===----------------------------------------------------------------------===//
13
John McCall19510852010-08-20 18:27:03 +000014#include "clang/Parse/ParseDiagnostic.h" // FIXME: remove this back-dependency!
15#include "clang/Sema/DeclSpec.h"
Douglas Gregor555f57e2011-06-25 00:56:27 +000016#include "clang/Sema/LocInfoType.h"
John McCall19510852010-08-20 18:27:03 +000017#include "clang/Sema/ParsedTemplate.h"
Richard Smith841804b2011-10-17 23:06:20 +000018#include "clang/Sema/SemaDiagnostic.h"
Peter Collingbourneb8b0e752011-10-06 03:01:00 +000019#include "clang/Sema/Sema.h"
Douglas Gregorc34348a2011-02-24 17:54:50 +000020#include "clang/AST/ASTContext.h"
Douglas Gregor555f57e2011-06-25 00:56:27 +000021#include "clang/AST/Expr.h"
Douglas Gregor2e4c34a2011-02-24 00:17:56 +000022#include "clang/AST/NestedNameSpecifier.h"
23#include "clang/AST/TypeLoc.h"
Douglas Gregor9b3064b2009-04-01 22:41:11 +000024#include "clang/Lex/Preprocessor.h"
Reid Spencer5f016e22007-07-11 17:01:13 +000025#include "clang/Basic/LangOptions.h"
Chris Lattner5af2f352009-01-20 19:11:22 +000026#include "llvm/ADT/STLExtras.h"
John McCall32d335e2009-08-03 18:47:27 +000027#include "llvm/Support/ErrorHandling.h"
Douglas Gregore4e5b052009-03-19 00:18:19 +000028#include <cstring>
Reid Spencer5f016e22007-07-11 17:01:13 +000029using namespace clang;
30
Chris Lattner254be6a2008-11-22 08:32:36 +000031
David Blaikied6471f72011-09-25 23:23:43 +000032static DiagnosticBuilder Diag(DiagnosticsEngine &D, SourceLocation Loc,
Argyrios Kyrtzidis33e4e702010-11-18 20:06:41 +000033 unsigned DiagID) {
34 return D.Report(Loc, DiagID);
Chris Lattner254be6a2008-11-22 08:32:36 +000035}
36
Douglas Gregor314b97f2009-11-10 19:49:08 +000037
38void UnqualifiedId::setTemplateId(TemplateIdAnnotation *TemplateId) {
39 assert(TemplateId && "NULL template-id annotation?");
40 Kind = IK_TemplateId;
41 this->TemplateId = TemplateId;
42 StartLocation = TemplateId->TemplateNameLoc;
43 EndLocation = TemplateId->RAngleLoc;
44}
45
Douglas Gregor0efc2c12010-01-13 17:31:36 +000046void UnqualifiedId::setConstructorTemplateId(TemplateIdAnnotation *TemplateId) {
47 assert(TemplateId && "NULL template-id annotation?");
48 Kind = IK_ConstructorTemplateId;
49 this->TemplateId = TemplateId;
50 StartLocation = TemplateId->TemplateNameLoc;
51 EndLocation = TemplateId->RAngleLoc;
52}
53
Douglas Gregor2e4c34a2011-02-24 00:17:56 +000054void CXXScopeSpec::Extend(ASTContext &Context, SourceLocation TemplateKWLoc,
55 TypeLoc TL, SourceLocation ColonColonLoc) {
Douglas Gregor5f791bb2011-02-28 23:58:31 +000056 Builder.Extend(Context, TemplateKWLoc, TL, ColonColonLoc);
Douglas Gregor2e4c34a2011-02-24 00:17:56 +000057 if (Range.getBegin().isInvalid())
58 Range.setBegin(TL.getBeginLoc());
59 Range.setEnd(ColonColonLoc);
Douglas Gregorc34348a2011-02-24 17:54:50 +000060
Douglas Gregor5f791bb2011-02-28 23:58:31 +000061 assert(Range == Builder.getSourceRange() &&
Douglas Gregorc34348a2011-02-24 17:54:50 +000062 "NestedNameSpecifierLoc range computation incorrect");
Douglas Gregor2e4c34a2011-02-24 00:17:56 +000063}
64
65void CXXScopeSpec::Extend(ASTContext &Context, IdentifierInfo *Identifier,
66 SourceLocation IdentifierLoc,
67 SourceLocation ColonColonLoc) {
Douglas Gregor5f791bb2011-02-28 23:58:31 +000068 Builder.Extend(Context, Identifier, IdentifierLoc, ColonColonLoc);
69
Douglas Gregor2e4c34a2011-02-24 00:17:56 +000070 if (Range.getBegin().isInvalid())
71 Range.setBegin(IdentifierLoc);
72 Range.setEnd(ColonColonLoc);
Douglas Gregorc34348a2011-02-24 17:54:50 +000073
Douglas Gregor5f791bb2011-02-28 23:58:31 +000074 assert(Range == Builder.getSourceRange() &&
Douglas Gregorc34348a2011-02-24 17:54:50 +000075 "NestedNameSpecifierLoc range computation incorrect");
Douglas Gregor2e4c34a2011-02-24 00:17:56 +000076}
77
78void CXXScopeSpec::Extend(ASTContext &Context, NamespaceDecl *Namespace,
79 SourceLocation NamespaceLoc,
80 SourceLocation ColonColonLoc) {
Douglas Gregor5f791bb2011-02-28 23:58:31 +000081 Builder.Extend(Context, Namespace, NamespaceLoc, ColonColonLoc);
82
Douglas Gregor2e4c34a2011-02-24 00:17:56 +000083 if (Range.getBegin().isInvalid())
84 Range.setBegin(NamespaceLoc);
85 Range.setEnd(ColonColonLoc);
Douglas Gregorc34348a2011-02-24 17:54:50 +000086
Douglas Gregor5f791bb2011-02-28 23:58:31 +000087 assert(Range == Builder.getSourceRange() &&
Douglas Gregorc34348a2011-02-24 17:54:50 +000088 "NestedNameSpecifierLoc range computation incorrect");
Douglas Gregor2e4c34a2011-02-24 00:17:56 +000089}
90
Douglas Gregor14aba762011-02-24 02:36:08 +000091void CXXScopeSpec::Extend(ASTContext &Context, NamespaceAliasDecl *Alias,
92 SourceLocation AliasLoc,
93 SourceLocation ColonColonLoc) {
Douglas Gregor5f791bb2011-02-28 23:58:31 +000094 Builder.Extend(Context, Alias, AliasLoc, ColonColonLoc);
95
Douglas Gregor14aba762011-02-24 02:36:08 +000096 if (Range.getBegin().isInvalid())
97 Range.setBegin(AliasLoc);
98 Range.setEnd(ColonColonLoc);
Douglas Gregorc34348a2011-02-24 17:54:50 +000099
Douglas Gregor5f791bb2011-02-28 23:58:31 +0000100 assert(Range == Builder.getSourceRange() &&
Douglas Gregorc34348a2011-02-24 17:54:50 +0000101 "NestedNameSpecifierLoc range computation incorrect");
Douglas Gregor14aba762011-02-24 02:36:08 +0000102}
103
Douglas Gregor2e4c34a2011-02-24 00:17:56 +0000104void CXXScopeSpec::MakeGlobal(ASTContext &Context,
105 SourceLocation ColonColonLoc) {
Douglas Gregor5f791bb2011-02-28 23:58:31 +0000106 Builder.MakeGlobal(Context, ColonColonLoc);
107
Douglas Gregor2e4c34a2011-02-24 00:17:56 +0000108 Range = SourceRange(ColonColonLoc);
Douglas Gregorc34348a2011-02-24 17:54:50 +0000109
Douglas Gregor5f791bb2011-02-28 23:58:31 +0000110 assert(Range == Builder.getSourceRange() &&
Douglas Gregorc34348a2011-02-24 17:54:50 +0000111 "NestedNameSpecifierLoc range computation incorrect");
112}
113
114void CXXScopeSpec::MakeTrivial(ASTContext &Context,
115 NestedNameSpecifier *Qualifier, SourceRange R) {
Douglas Gregor5f791bb2011-02-28 23:58:31 +0000116 Builder.MakeTrivial(Context, Qualifier, R);
Douglas Gregorc34348a2011-02-24 17:54:50 +0000117 Range = R;
Douglas Gregorc34348a2011-02-24 17:54:50 +0000118}
119
120void CXXScopeSpec::Adopt(NestedNameSpecifierLoc Other) {
121 if (!Other) {
122 Range = SourceRange();
Douglas Gregor5f791bb2011-02-28 23:58:31 +0000123 Builder.Clear();
Douglas Gregorc34348a2011-02-24 17:54:50 +0000124 return;
125 }
Douglas Gregor5f791bb2011-02-28 23:58:31 +0000126
Douglas Gregorc34348a2011-02-24 17:54:50 +0000127 Range = Other.getSourceRange();
Douglas Gregor5f791bb2011-02-28 23:58:31 +0000128 Builder.Adopt(Other);
Douglas Gregorc34348a2011-02-24 17:54:50 +0000129}
130
John McCall9dc71d22011-07-06 06:57:57 +0000131SourceLocation CXXScopeSpec::getLastQualifierNameLoc() const {
132 if (!Builder.getRepresentation())
133 return SourceLocation();
134 return Builder.getTemporary().getLocalBeginLoc();
135}
136
Douglas Gregorc22b5ff2011-02-25 02:25:35 +0000137NestedNameSpecifierLoc
138CXXScopeSpec::getWithLocInContext(ASTContext &Context) const {
Douglas Gregorb46ae392011-03-03 21:48:55 +0000139 if (!Builder.getRepresentation())
Douglas Gregorc34348a2011-02-24 17:54:50 +0000140 return NestedNameSpecifierLoc();
141
Douglas Gregor5f791bb2011-02-28 23:58:31 +0000142 return Builder.getWithLocInContext(Context);
Douglas Gregor2e4c34a2011-02-24 00:17:56 +0000143}
144
Chris Lattner5af2f352009-01-20 19:11:22 +0000145/// DeclaratorChunk::getFunction - Return a DeclaratorChunk for a function.
146/// "TheDeclarator" is the declarator that this will be added to.
Abramo Bagnara59c0a812012-10-04 21:42:10 +0000147DeclaratorChunk DeclaratorChunk::getFunction(bool hasProto,
Richard Smithb9c62612012-07-30 21:30:52 +0000148 bool isAmbiguous,
Abramo Bagnara59c0a812012-10-04 21:42:10 +0000149 SourceLocation LParenLoc,
Chris Lattner5af2f352009-01-20 19:11:22 +0000150 ParamInfo *ArgInfo,
151 unsigned NumArgs,
Abramo Bagnara59c0a812012-10-04 21:42:10 +0000152 SourceLocation EllipsisLoc,
153 SourceLocation RParenLoc,
Chris Lattner5af2f352009-01-20 19:11:22 +0000154 unsigned TypeQuals,
Douglas Gregor83f51722011-01-26 03:43:54 +0000155 bool RefQualifierIsLvalueRef,
156 SourceLocation RefQualifierLoc,
Douglas Gregor43f51032011-10-19 06:04:55 +0000157 SourceLocation ConstQualifierLoc,
158 SourceLocation
159 VolatileQualifierLoc,
Douglas Gregor90ebed02011-07-13 21:47:47 +0000160 SourceLocation MutableLoc,
Sebastian Redl6e5d3192011-03-05 22:42:13 +0000161 ExceptionSpecificationType
162 ESpecType,
163 SourceLocation ESpecLoc,
John McCallb3d87482010-08-24 05:47:05 +0000164 ParsedType *Exceptions,
Sebastian Redlef65f062009-05-29 18:02:33 +0000165 SourceRange *ExceptionRanges,
Sebastian Redl7dc81342009-04-29 17:30:04 +0000166 unsigned NumExceptions,
Sebastian Redl6e5d3192011-03-05 22:42:13 +0000167 Expr *NoexceptExpr,
Abramo Bagnara796aa442011-03-12 11:17:06 +0000168 SourceLocation LocalRangeBegin,
169 SourceLocation LocalRangeEnd,
Douglas Gregordab60ad2010-10-01 18:44:50 +0000170 Declarator &TheDeclarator,
Richard Smith54655be2012-06-12 01:51:59 +0000171 TypeResult TrailingReturnType) {
Chris Lattner5af2f352009-01-20 19:11:22 +0000172 DeclaratorChunk I;
Sebastian Redl6e5d3192011-03-05 22:42:13 +0000173 I.Kind = Function;
Abramo Bagnara796aa442011-03-12 11:17:06 +0000174 I.Loc = LocalRangeBegin;
175 I.EndLoc = LocalRangeEnd;
John McCall0b7e6782011-03-24 11:26:52 +0000176 I.Fun.AttrList = 0;
Sebastian Redl6e5d3192011-03-05 22:42:13 +0000177 I.Fun.hasPrototype = hasProto;
Abramo Bagnara59c0a812012-10-04 21:42:10 +0000178 I.Fun.isVariadic = EllipsisLoc.isValid();
Richard Smithb9c62612012-07-30 21:30:52 +0000179 I.Fun.isAmbiguous = isAmbiguous;
Abramo Bagnara59c0a812012-10-04 21:42:10 +0000180 I.Fun.LParenLoc = LParenLoc.getRawEncoding();
Sebastian Redl6e5d3192011-03-05 22:42:13 +0000181 I.Fun.EllipsisLoc = EllipsisLoc.getRawEncoding();
Abramo Bagnara59c0a812012-10-04 21:42:10 +0000182 I.Fun.RParenLoc = RParenLoc.getRawEncoding();
Sebastian Redl6e5d3192011-03-05 22:42:13 +0000183 I.Fun.DeleteArgInfo = false;
184 I.Fun.TypeQuals = TypeQuals;
185 I.Fun.NumArgs = NumArgs;
186 I.Fun.ArgInfo = 0;
Douglas Gregor83f51722011-01-26 03:43:54 +0000187 I.Fun.RefQualifierIsLValueRef = RefQualifierIsLvalueRef;
Sebastian Redl6e5d3192011-03-05 22:42:13 +0000188 I.Fun.RefQualifierLoc = RefQualifierLoc.getRawEncoding();
Douglas Gregor43f51032011-10-19 06:04:55 +0000189 I.Fun.ConstQualifierLoc = ConstQualifierLoc.getRawEncoding();
190 I.Fun.VolatileQualifierLoc = VolatileQualifierLoc.getRawEncoding();
Douglas Gregor90ebed02011-07-13 21:47:47 +0000191 I.Fun.MutableLoc = MutableLoc.getRawEncoding();
Sebastian Redl6e5d3192011-03-05 22:42:13 +0000192 I.Fun.ExceptionSpecType = ESpecType;
193 I.Fun.ExceptionSpecLoc = ESpecLoc.getRawEncoding();
194 I.Fun.NumExceptions = 0;
195 I.Fun.Exceptions = 0;
196 I.Fun.NoexceptExpr = 0;
Richard Smith54655be2012-06-12 01:51:59 +0000197 I.Fun.HasTrailingReturnType = TrailingReturnType.isUsable() ||
198 TrailingReturnType.isInvalid();
199 I.Fun.TrailingReturnType = TrailingReturnType.get();
Sebastian Redl7dc81342009-04-29 17:30:04 +0000200
Chris Lattner5af2f352009-01-20 19:11:22 +0000201 // new[] an argument array if needed.
202 if (NumArgs) {
203 // If the 'InlineParams' in Declarator is unused and big enough, put our
204 // parameter list there (in an effort to avoid new/delete traffic). If it
205 // is already used (consider a function returning a function pointer) or too
206 // small (function taking too many arguments), go to the heap.
Mike Stump1eb44332009-09-09 15:08:12 +0000207 if (!TheDeclarator.InlineParamsUsed &&
Chris Lattner5af2f352009-01-20 19:11:22 +0000208 NumArgs <= llvm::array_lengthof(TheDeclarator.InlineParams)) {
209 I.Fun.ArgInfo = TheDeclarator.InlineParams;
210 I.Fun.DeleteArgInfo = false;
211 TheDeclarator.InlineParamsUsed = true;
212 } else {
213 I.Fun.ArgInfo = new DeclaratorChunk::ParamInfo[NumArgs];
214 I.Fun.DeleteArgInfo = true;
215 }
216 memcpy(I.Fun.ArgInfo, ArgInfo, sizeof(ArgInfo[0])*NumArgs);
217 }
Sebastian Redl6e5d3192011-03-05 22:42:13 +0000218
219 // Check what exception specification information we should actually store.
220 switch (ESpecType) {
221 default: break; // By default, save nothing.
222 case EST_Dynamic:
223 // new[] an exception array if needed
224 if (NumExceptions) {
225 I.Fun.NumExceptions = NumExceptions;
226 I.Fun.Exceptions = new DeclaratorChunk::TypeAndRange[NumExceptions];
227 for (unsigned i = 0; i != NumExceptions; ++i) {
228 I.Fun.Exceptions[i].Ty = Exceptions[i];
229 I.Fun.Exceptions[i].Range = ExceptionRanges[i];
230 }
Sebastian Redlef65f062009-05-29 18:02:33 +0000231 }
Sebastian Redl6e5d3192011-03-05 22:42:13 +0000232 break;
233
234 case EST_ComputedNoexcept:
235 I.Fun.NoexceptExpr = NoexceptExpr;
236 break;
Sebastian Redl7dc81342009-04-29 17:30:04 +0000237 }
Chris Lattner5af2f352009-01-20 19:11:22 +0000238 return I;
239}
Chris Lattner254be6a2008-11-22 08:32:36 +0000240
Douglas Gregor555f57e2011-06-25 00:56:27 +0000241bool Declarator::isDeclarationOfFunction() const {
Richard Smith1ab0d902011-06-25 02:28:38 +0000242 for (unsigned i = 0, i_end = DeclTypeInfo.size(); i < i_end; ++i) {
243 switch (DeclTypeInfo[i].Kind) {
244 case DeclaratorChunk::Function:
245 return true;
246 case DeclaratorChunk::Paren:
247 continue;
248 case DeclaratorChunk::Pointer:
249 case DeclaratorChunk::Reference:
250 case DeclaratorChunk::Array:
251 case DeclaratorChunk::BlockPointer:
252 case DeclaratorChunk::MemberPointer:
253 return false;
254 }
255 llvm_unreachable("Invalid type chunk");
Richard Smith1ab0d902011-06-25 02:28:38 +0000256 }
Douglas Gregor555f57e2011-06-25 00:56:27 +0000257
258 switch (DS.getTypeSpecType()) {
Eli Friedmanb001de72011-10-06 23:00:33 +0000259 case TST_atomic:
Douglas Gregor555f57e2011-06-25 00:56:27 +0000260 case TST_auto:
261 case TST_bool:
262 case TST_char:
263 case TST_char16:
264 case TST_char32:
265 case TST_class:
266 case TST_decimal128:
267 case TST_decimal32:
268 case TST_decimal64:
269 case TST_double:
270 case TST_enum:
271 case TST_error:
272 case TST_float:
Anton Korobeynikovaa4a99b2011-10-14 23:23:15 +0000273 case TST_half:
Douglas Gregor555f57e2011-06-25 00:56:27 +0000274 case TST_int:
Richard Smith5a5a9712012-04-04 06:24:32 +0000275 case TST_int128:
Douglas Gregor555f57e2011-06-25 00:56:27 +0000276 case TST_struct:
Joao Matos6666ed42012-08-31 18:45:21 +0000277 case TST_interface:
Douglas Gregor555f57e2011-06-25 00:56:27 +0000278 case TST_union:
279 case TST_unknown_anytype:
280 case TST_unspecified:
281 case TST_void:
282 case TST_wchar:
283 return false;
284
285 case TST_decltype:
286 case TST_typeofExpr:
287 if (Expr *E = DS.getRepAsExpr())
288 return E->getType()->isFunctionType();
289 return false;
290
291 case TST_underlyingType:
292 case TST_typename:
293 case TST_typeofType: {
294 QualType QT = DS.getRepAsType().get();
295 if (QT.isNull())
296 return false;
297
298 if (const LocInfoType *LIT = dyn_cast<LocInfoType>(QT))
299 QT = LIT->getType();
300
301 if (QT.isNull())
302 return false;
303
304 return QT->isFunctionType();
305 }
306 }
David Blaikie7530c032012-01-17 06:56:22 +0000307
308 llvm_unreachable("Invalid TypeSpecType!");
Douglas Gregor555f57e2011-06-25 00:56:27 +0000309}
310
Reid Spencer5f016e22007-07-11 17:01:13 +0000311/// getParsedSpecifiers - Return a bitmask of which flavors of specifiers this
Chris Lattner2a327d12009-02-27 18:35:46 +0000312/// declaration specifier includes.
Reid Spencer5f016e22007-07-11 17:01:13 +0000313///
314unsigned DeclSpec::getParsedSpecifiers() const {
315 unsigned Res = 0;
316 if (StorageClassSpec != SCS_unspecified ||
317 SCS_thread_specified)
318 Res |= PQ_StorageClassSpecifier;
Mike Stumpd4204332008-06-19 19:52:46 +0000319
Reid Spencer5f016e22007-07-11 17:01:13 +0000320 if (TypeQualifiers != TQ_unspecified)
321 Res |= PQ_TypeQualifier;
Mike Stump1eb44332009-09-09 15:08:12 +0000322
Reid Spencer5f016e22007-07-11 17:01:13 +0000323 if (hasTypeSpecifier())
324 Res |= PQ_TypeSpecifier;
Mike Stump1eb44332009-09-09 15:08:12 +0000325
Douglas Gregorb48fe382008-10-31 09:07:45 +0000326 if (FS_inline_specified || FS_virtual_specified || FS_explicit_specified)
Reid Spencer5f016e22007-07-11 17:01:13 +0000327 Res |= PQ_FunctionSpecifier;
328 return Res;
329}
330
John McCallfec54012009-08-03 20:12:06 +0000331template <class T> static bool BadSpecifier(T TNew, T TPrev,
332 const char *&PrevSpec,
Aaron Ballmanc8286202012-08-28 20:55:40 +0000333 unsigned &DiagID,
334 bool IsExtension = true) {
John McCall32d335e2009-08-03 18:47:27 +0000335 PrevSpec = DeclSpec::getSpecifierName(TPrev);
Aaron Ballmanc8286202012-08-28 20:55:40 +0000336 if (TNew != TPrev)
337 DiagID = diag::err_invalid_decl_spec_combination;
338 else
339 DiagID = IsExtension ? diag::ext_duplicate_declspec :
340 diag::warn_duplicate_declspec;
John McCall32d335e2009-08-03 18:47:27 +0000341 return true;
Mike Stump1eb44332009-09-09 15:08:12 +0000342}
John McCall32d335e2009-08-03 18:47:27 +0000343
Reid Spencer5f016e22007-07-11 17:01:13 +0000344const char *DeclSpec::getSpecifierName(DeclSpec::SCS S) {
345 switch (S) {
Reid Spencer5f016e22007-07-11 17:01:13 +0000346 case DeclSpec::SCS_unspecified: return "unspecified";
347 case DeclSpec::SCS_typedef: return "typedef";
348 case DeclSpec::SCS_extern: return "extern";
349 case DeclSpec::SCS_static: return "static";
350 case DeclSpec::SCS_auto: return "auto";
351 case DeclSpec::SCS_register: return "register";
Eli Friedman63054b32009-04-19 20:27:55 +0000352 case DeclSpec::SCS_private_extern: return "__private_extern__";
Sebastian Redl669d5d72008-11-14 23:42:31 +0000353 case DeclSpec::SCS_mutable: return "mutable";
Reid Spencer5f016e22007-07-11 17:01:13 +0000354 }
Jeffrey Yasskin9f61aa92009-12-12 05:05:38 +0000355 llvm_unreachable("Unknown typespec!");
Reid Spencer5f016e22007-07-11 17:01:13 +0000356}
357
John McCall32d335e2009-08-03 18:47:27 +0000358const char *DeclSpec::getSpecifierName(TSW W) {
Reid Spencer5f016e22007-07-11 17:01:13 +0000359 switch (W) {
John McCall32d335e2009-08-03 18:47:27 +0000360 case TSW_unspecified: return "unspecified";
361 case TSW_short: return "short";
362 case TSW_long: return "long";
363 case TSW_longlong: return "long long";
Reid Spencer5f016e22007-07-11 17:01:13 +0000364 }
Jeffrey Yasskin9f61aa92009-12-12 05:05:38 +0000365 llvm_unreachable("Unknown typespec!");
Reid Spencer5f016e22007-07-11 17:01:13 +0000366}
367
John McCall32d335e2009-08-03 18:47:27 +0000368const char *DeclSpec::getSpecifierName(TSC C) {
Reid Spencer5f016e22007-07-11 17:01:13 +0000369 switch (C) {
John McCall32d335e2009-08-03 18:47:27 +0000370 case TSC_unspecified: return "unspecified";
371 case TSC_imaginary: return "imaginary";
372 case TSC_complex: return "complex";
Reid Spencer5f016e22007-07-11 17:01:13 +0000373 }
Jeffrey Yasskin9f61aa92009-12-12 05:05:38 +0000374 llvm_unreachable("Unknown typespec!");
Reid Spencer5f016e22007-07-11 17:01:13 +0000375}
376
377
John McCall32d335e2009-08-03 18:47:27 +0000378const char *DeclSpec::getSpecifierName(TSS S) {
Reid Spencer5f016e22007-07-11 17:01:13 +0000379 switch (S) {
John McCall32d335e2009-08-03 18:47:27 +0000380 case TSS_unspecified: return "unspecified";
381 case TSS_signed: return "signed";
382 case TSS_unsigned: return "unsigned";
Reid Spencer5f016e22007-07-11 17:01:13 +0000383 }
Jeffrey Yasskin9f61aa92009-12-12 05:05:38 +0000384 llvm_unreachable("Unknown typespec!");
Reid Spencer5f016e22007-07-11 17:01:13 +0000385}
386
387const char *DeclSpec::getSpecifierName(DeclSpec::TST T) {
388 switch (T) {
Reid Spencer5f016e22007-07-11 17:01:13 +0000389 case DeclSpec::TST_unspecified: return "unspecified";
390 case DeclSpec::TST_void: return "void";
391 case DeclSpec::TST_char: return "char";
Argyrios Kyrtzidis64c438a2008-08-09 16:51:54 +0000392 case DeclSpec::TST_wchar: return "wchar_t";
Alisdair Meredithf5c209d2009-07-14 06:30:34 +0000393 case DeclSpec::TST_char16: return "char16_t";
394 case DeclSpec::TST_char32: return "char32_t";
Reid Spencer5f016e22007-07-11 17:01:13 +0000395 case DeclSpec::TST_int: return "int";
Richard Smith5a5a9712012-04-04 06:24:32 +0000396 case DeclSpec::TST_int128: return "__int128";
Anton Korobeynikovaa4a99b2011-10-14 23:23:15 +0000397 case DeclSpec::TST_half: return "half";
Reid Spencer5f016e22007-07-11 17:01:13 +0000398 case DeclSpec::TST_float: return "float";
399 case DeclSpec::TST_double: return "double";
400 case DeclSpec::TST_bool: return "_Bool";
401 case DeclSpec::TST_decimal32: return "_Decimal32";
402 case DeclSpec::TST_decimal64: return "_Decimal64";
403 case DeclSpec::TST_decimal128: return "_Decimal128";
404 case DeclSpec::TST_enum: return "enum";
Chris Lattner99dc9142008-04-13 18:59:07 +0000405 case DeclSpec::TST_class: return "class";
Reid Spencer5f016e22007-07-11 17:01:13 +0000406 case DeclSpec::TST_union: return "union";
407 case DeclSpec::TST_struct: return "struct";
Joao Matos6666ed42012-08-31 18:45:21 +0000408 case DeclSpec::TST_interface: return "__interface";
Douglas Gregor1a51b4a2009-02-09 15:09:02 +0000409 case DeclSpec::TST_typename: return "type-name";
Steve Naroffd1861fd2007-07-31 12:34:36 +0000410 case DeclSpec::TST_typeofType:
411 case DeclSpec::TST_typeofExpr: return "typeof";
John McCall32d335e2009-08-03 18:47:27 +0000412 case DeclSpec::TST_auto: return "auto";
413 case DeclSpec::TST_decltype: return "(decltype)";
Sean Huntca63c202011-05-24 22:41:36 +0000414 case DeclSpec::TST_underlyingType: return "__underlying_type";
John McCalla5fc4722011-04-09 22:50:59 +0000415 case DeclSpec::TST_unknown_anytype: return "__unknown_anytype";
Eli Friedmanb001de72011-10-06 23:00:33 +0000416 case DeclSpec::TST_atomic: return "_Atomic";
John McCall32d335e2009-08-03 18:47:27 +0000417 case DeclSpec::TST_error: return "(error)";
Reid Spencer5f016e22007-07-11 17:01:13 +0000418 }
Jeffrey Yasskin9f61aa92009-12-12 05:05:38 +0000419 llvm_unreachable("Unknown typespec!");
Reid Spencer5f016e22007-07-11 17:01:13 +0000420}
421
John McCall32d335e2009-08-03 18:47:27 +0000422const char *DeclSpec::getSpecifierName(TQ T) {
Reid Spencer5f016e22007-07-11 17:01:13 +0000423 switch (T) {
John McCall32d335e2009-08-03 18:47:27 +0000424 case DeclSpec::TQ_unspecified: return "unspecified";
425 case DeclSpec::TQ_const: return "const";
426 case DeclSpec::TQ_restrict: return "restrict";
427 case DeclSpec::TQ_volatile: return "volatile";
Reid Spencer5f016e22007-07-11 17:01:13 +0000428 }
Jeffrey Yasskin9f61aa92009-12-12 05:05:38 +0000429 llvm_unreachable("Unknown typespec!");
Reid Spencer5f016e22007-07-11 17:01:13 +0000430}
431
Peter Collingbourneb8b0e752011-10-06 03:01:00 +0000432bool DeclSpec::SetStorageClassSpec(Sema &S, SCS SC, SourceLocation Loc,
John McCallfec54012009-08-03 20:12:06 +0000433 const char *&PrevSpec,
Peter Collingbourneb8b0e752011-10-06 03:01:00 +0000434 unsigned &DiagID) {
Tanya Lattner5e94d6f2012-06-19 23:09:52 +0000435 // OpenCL v1.1 s6.8g: "The extern, static, auto and register storage-class
436 // specifiers are not supported.
Peter Collingbournee2f82f72011-02-11 19:59:54 +0000437 // It seems sensible to prohibit private_extern too
Peter Collingbourneb8b0e752011-10-06 03:01:00 +0000438 // The cl_clang_storage_class_specifiers extension enables support for
439 // these storage-class specifiers.
Tanya Lattner5e94d6f2012-06-19 23:09:52 +0000440 // OpenCL v1.2 s6.8 changes this to "The auto and register storage-class
441 // specifiers are not supported."
David Blaikie4e4d0842012-03-11 07:00:24 +0000442 if (S.getLangOpts().OpenCL &&
Peter Collingbourneb8b0e752011-10-06 03:01:00 +0000443 !S.getOpenCLOptions().cl_clang_storage_class_specifiers) {
444 switch (SC) {
Peter Collingbournee2f82f72011-02-11 19:59:54 +0000445 case SCS_extern:
446 case SCS_private_extern:
Tanya Lattner5e94d6f2012-06-19 23:09:52 +0000447 case SCS_static:
448 if (S.getLangOpts().OpenCLVersion < 120) {
449 DiagID = diag::err_not_opencl_storage_class_specifier;
450 PrevSpec = getSpecifierName(SC);
451 return true;
452 }
453 break;
Peter Collingbournee2f82f72011-02-11 19:59:54 +0000454 case SCS_auto:
455 case SCS_register:
Peter Collingbournee2f82f72011-02-11 19:59:54 +0000456 DiagID = diag::err_not_opencl_storage_class_specifier;
Peter Collingbourneb8b0e752011-10-06 03:01:00 +0000457 PrevSpec = getSpecifierName(SC);
Peter Collingbournee2f82f72011-02-11 19:59:54 +0000458 return true;
459 default:
460 break;
461 }
462 }
463
Abramo Bagnara35f9a192010-07-30 16:47:02 +0000464 if (StorageClassSpec != SCS_unspecified) {
Richard Smith8f4fb192011-09-04 19:54:14 +0000465 // Maybe this is an attempt to use C++0x 'auto' outside of C++0x mode.
466 bool isInvalid = true;
David Blaikie4e4d0842012-03-11 07:00:24 +0000467 if (TypeSpecType == TST_unspecified && S.getLangOpts().CPlusPlus) {
Peter Collingbourneb8b0e752011-10-06 03:01:00 +0000468 if (SC == SCS_auto)
Richard Smith8f4fb192011-09-04 19:54:14 +0000469 return SetTypeSpecType(TST_auto, Loc, PrevSpec, DiagID);
470 if (StorageClassSpec == SCS_auto) {
471 isInvalid = SetTypeSpecType(TST_auto, StorageClassSpecLoc,
472 PrevSpec, DiagID);
473 assert(!isInvalid && "auto SCS -> TST recovery failed");
474 }
475 }
476
Abramo Bagnara35f9a192010-07-30 16:47:02 +0000477 // Changing storage class is allowed only if the previous one
478 // was the 'extern' that is part of a linkage specification and
479 // the new storage class is 'typedef'.
Richard Smith8f4fb192011-09-04 19:54:14 +0000480 if (isInvalid &&
481 !(SCS_extern_in_linkage_spec &&
Abramo Bagnara35f9a192010-07-30 16:47:02 +0000482 StorageClassSpec == SCS_extern &&
Peter Collingbourneb8b0e752011-10-06 03:01:00 +0000483 SC == SCS_typedef))
484 return BadSpecifier(SC, (SCS)StorageClassSpec, PrevSpec, DiagID);
Abramo Bagnara35f9a192010-07-30 16:47:02 +0000485 }
Peter Collingbourneb8b0e752011-10-06 03:01:00 +0000486 StorageClassSpec = SC;
Reid Spencer5f016e22007-07-11 17:01:13 +0000487 StorageClassSpecLoc = Loc;
Peter Collingbourneb8b0e752011-10-06 03:01:00 +0000488 assert((unsigned)SC == StorageClassSpec && "SCS constants overflow bitfield");
Reid Spencer5f016e22007-07-11 17:01:13 +0000489 return false;
490}
491
Mike Stump1eb44332009-09-09 15:08:12 +0000492bool DeclSpec::SetStorageClassSpecThread(SourceLocation Loc,
John McCallfec54012009-08-03 20:12:06 +0000493 const char *&PrevSpec,
494 unsigned &DiagID) {
Reid Spencer5f016e22007-07-11 17:01:13 +0000495 if (SCS_thread_specified) {
496 PrevSpec = "__thread";
John McCallfec54012009-08-03 20:12:06 +0000497 DiagID = diag::ext_duplicate_declspec;
Reid Spencer5f016e22007-07-11 17:01:13 +0000498 return true;
499 }
500 SCS_thread_specified = true;
501 SCS_threadLoc = Loc;
502 return false;
503}
504
Reid Spencer5f016e22007-07-11 17:01:13 +0000505/// These methods set the specified attribute of the DeclSpec, but return true
506/// and ignore the request if invalid (e.g. "extern" then "auto" is
507/// specified).
508bool DeclSpec::SetTypeSpecWidth(TSW W, SourceLocation Loc,
John McCallfec54012009-08-03 20:12:06 +0000509 const char *&PrevSpec,
510 unsigned &DiagID) {
Abramo Bagnara2553eaf2011-03-06 22:21:56 +0000511 // Overwrite TSWLoc only if TypeSpecWidth was unspecified, so that
512 // for 'long long' we will keep the source location of the first 'long'.
513 if (TypeSpecWidth == TSW_unspecified)
514 TSWLoc = Loc;
515 // Allow turning long -> long long.
516 else if (W != TSW_longlong || TypeSpecWidth != TSW_long)
John McCallfec54012009-08-03 20:12:06 +0000517 return BadSpecifier(W, (TSW)TypeSpecWidth, PrevSpec, DiagID);
Reid Spencer5f016e22007-07-11 17:01:13 +0000518 TypeSpecWidth = W;
Chris Lattner788b0fd2010-06-23 06:00:24 +0000519 if (TypeAltiVecVector && !TypeAltiVecBool &&
520 ((TypeSpecWidth == TSW_long) || (TypeSpecWidth == TSW_longlong))) {
John Thompson82287d12010-02-05 00:12:22 +0000521 PrevSpec = DeclSpec::getSpecifierName((TST) TypeSpecType);
522 DiagID = diag::warn_vector_long_decl_spec_combination;
523 return true;
524 }
Reid Spencer5f016e22007-07-11 17:01:13 +0000525 return false;
526}
527
Mike Stump1eb44332009-09-09 15:08:12 +0000528bool DeclSpec::SetTypeSpecComplex(TSC C, SourceLocation Loc,
John McCallfec54012009-08-03 20:12:06 +0000529 const char *&PrevSpec,
530 unsigned &DiagID) {
Reid Spencer5f016e22007-07-11 17:01:13 +0000531 if (TypeSpecComplex != TSC_unspecified)
John McCallfec54012009-08-03 20:12:06 +0000532 return BadSpecifier(C, (TSC)TypeSpecComplex, PrevSpec, DiagID);
Reid Spencer5f016e22007-07-11 17:01:13 +0000533 TypeSpecComplex = C;
534 TSCLoc = Loc;
535 return false;
536}
537
Mike Stump1eb44332009-09-09 15:08:12 +0000538bool DeclSpec::SetTypeSpecSign(TSS S, SourceLocation Loc,
John McCallfec54012009-08-03 20:12:06 +0000539 const char *&PrevSpec,
540 unsigned &DiagID) {
Reid Spencer5f016e22007-07-11 17:01:13 +0000541 if (TypeSpecSign != TSS_unspecified)
John McCallfec54012009-08-03 20:12:06 +0000542 return BadSpecifier(S, (TSS)TypeSpecSign, PrevSpec, DiagID);
Reid Spencer5f016e22007-07-11 17:01:13 +0000543 TypeSpecSign = S;
544 TSSLoc = Loc;
545 return false;
546}
547
548bool DeclSpec::SetTypeSpecType(TST T, SourceLocation Loc,
John McCallfec54012009-08-03 20:12:06 +0000549 const char *&PrevSpec,
550 unsigned &DiagID,
John McCallb3d87482010-08-24 05:47:05 +0000551 ParsedType Rep) {
Abramo Bagnara0daaf322011-03-16 20:16:18 +0000552 return SetTypeSpecType(T, Loc, Loc, PrevSpec, DiagID, Rep);
553}
554
555bool DeclSpec::SetTypeSpecType(TST T, SourceLocation TagKwLoc,
556 SourceLocation TagNameLoc,
557 const char *&PrevSpec,
558 unsigned &DiagID,
559 ParsedType Rep) {
John McCallb3d87482010-08-24 05:47:05 +0000560 assert(isTypeRep(T) && "T does not store a type");
561 assert(Rep && "no type provided!");
562 if (TypeSpecType != TST_unspecified) {
563 PrevSpec = DeclSpec::getSpecifierName((TST) TypeSpecType);
564 DiagID = diag::err_invalid_decl_spec_combination;
565 return true;
566 }
567 TypeSpecType = T;
568 TypeRep = Rep;
Abramo Bagnara0daaf322011-03-16 20:16:18 +0000569 TSTLoc = TagKwLoc;
570 TSTNameLoc = TagNameLoc;
John McCallb3d87482010-08-24 05:47:05 +0000571 TypeSpecOwned = false;
572 return false;
573}
574
575bool DeclSpec::SetTypeSpecType(TST T, SourceLocation Loc,
576 const char *&PrevSpec,
577 unsigned &DiagID,
578 Expr *Rep) {
579 assert(isExprRep(T) && "T does not store an expr");
580 assert(Rep && "no expression provided!");
581 if (TypeSpecType != TST_unspecified) {
582 PrevSpec = DeclSpec::getSpecifierName((TST) TypeSpecType);
583 DiagID = diag::err_invalid_decl_spec_combination;
584 return true;
585 }
586 TypeSpecType = T;
587 ExprRep = Rep;
588 TSTLoc = Loc;
Abramo Bagnara0daaf322011-03-16 20:16:18 +0000589 TSTNameLoc = Loc;
John McCallb3d87482010-08-24 05:47:05 +0000590 TypeSpecOwned = false;
591 return false;
592}
593
594bool DeclSpec::SetTypeSpecType(TST T, SourceLocation Loc,
595 const char *&PrevSpec,
596 unsigned &DiagID,
597 Decl *Rep, bool Owned) {
Abramo Bagnara0daaf322011-03-16 20:16:18 +0000598 return SetTypeSpecType(T, Loc, Loc, PrevSpec, DiagID, Rep, Owned);
599}
600
601bool DeclSpec::SetTypeSpecType(TST T, SourceLocation TagKwLoc,
602 SourceLocation TagNameLoc,
603 const char *&PrevSpec,
604 unsigned &DiagID,
605 Decl *Rep, bool Owned) {
John McCallb3d87482010-08-24 05:47:05 +0000606 assert(isDeclRep(T) && "T does not store a decl");
607 // Unlike the other cases, we don't assert that we actually get a decl.
608
609 if (TypeSpecType != TST_unspecified) {
610 PrevSpec = DeclSpec::getSpecifierName((TST) TypeSpecType);
611 DiagID = diag::err_invalid_decl_spec_combination;
612 return true;
613 }
614 TypeSpecType = T;
615 DeclRep = Rep;
Abramo Bagnara0daaf322011-03-16 20:16:18 +0000616 TSTLoc = TagKwLoc;
617 TSTNameLoc = TagNameLoc;
John McCallb3d87482010-08-24 05:47:05 +0000618 TypeSpecOwned = Owned;
619 return false;
620}
621
622bool DeclSpec::SetTypeSpecType(TST T, SourceLocation Loc,
623 const char *&PrevSpec,
624 unsigned &DiagID) {
625 assert(!isDeclRep(T) && !isTypeRep(T) && !isExprRep(T) &&
626 "rep required for these type-spec kinds!");
John McCallfec54012009-08-03 20:12:06 +0000627 if (TypeSpecType != TST_unspecified) {
628 PrevSpec = DeclSpec::getSpecifierName((TST) TypeSpecType);
629 DiagID = diag::err_invalid_decl_spec_combination;
630 return true;
631 }
Abramo Bagnara0daaf322011-03-16 20:16:18 +0000632 TSTLoc = Loc;
633 TSTNameLoc = Loc;
Chris Lattner788b0fd2010-06-23 06:00:24 +0000634 if (TypeAltiVecVector && (T == TST_bool) && !TypeAltiVecBool) {
635 TypeAltiVecBool = true;
Chris Lattner788b0fd2010-06-23 06:00:24 +0000636 return false;
637 }
Reid Spencer5f016e22007-07-11 17:01:13 +0000638 TypeSpecType = T;
John McCallb3d87482010-08-24 05:47:05 +0000639 TypeSpecOwned = false;
Chris Lattner788b0fd2010-06-23 06:00:24 +0000640 if (TypeAltiVecVector && !TypeAltiVecBool && (TypeSpecType == TST_double)) {
John Thompson82287d12010-02-05 00:12:22 +0000641 PrevSpec = DeclSpec::getSpecifierName((TST) TypeSpecType);
Chris Lattner788b0fd2010-06-23 06:00:24 +0000642 DiagID = diag::err_invalid_vector_decl_spec;
John Thompson82287d12010-02-05 00:12:22 +0000643 return true;
644 }
645 return false;
646}
647
648bool DeclSpec::SetTypeAltiVecVector(bool isAltiVecVector, SourceLocation Loc,
649 const char *&PrevSpec, unsigned &DiagID) {
650 if (TypeSpecType != TST_unspecified) {
651 PrevSpec = DeclSpec::getSpecifierName((TST) TypeSpecType);
652 DiagID = diag::err_invalid_vector_decl_spec_combination;
653 return true;
654 }
655 TypeAltiVecVector = isAltiVecVector;
656 AltiVecLoc = Loc;
657 return false;
658}
659
660bool DeclSpec::SetTypeAltiVecPixel(bool isAltiVecPixel, SourceLocation Loc,
661 const char *&PrevSpec, unsigned &DiagID) {
Chris Lattner788b0fd2010-06-23 06:00:24 +0000662 if (!TypeAltiVecVector || TypeAltiVecPixel ||
663 (TypeSpecType != TST_unspecified)) {
John Thompson82287d12010-02-05 00:12:22 +0000664 PrevSpec = DeclSpec::getSpecifierName((TST) TypeSpecType);
665 DiagID = diag::err_invalid_pixel_decl_spec_combination;
666 return true;
667 }
John Thompson82287d12010-02-05 00:12:22 +0000668 TypeAltiVecPixel = isAltiVecPixel;
669 TSTLoc = Loc;
Abramo Bagnara0daaf322011-03-16 20:16:18 +0000670 TSTNameLoc = Loc;
Reid Spencer5f016e22007-07-11 17:01:13 +0000671 return false;
672}
673
Douglas Gregorddc29e12009-02-06 22:42:48 +0000674bool DeclSpec::SetTypeSpecError() {
675 TypeSpecType = TST_error;
John McCall9e46b8c2010-08-26 17:22:34 +0000676 TypeSpecOwned = false;
Douglas Gregorddc29e12009-02-06 22:42:48 +0000677 TSTLoc = SourceLocation();
Abramo Bagnara0daaf322011-03-16 20:16:18 +0000678 TSTNameLoc = SourceLocation();
Douglas Gregorddc29e12009-02-06 22:42:48 +0000679 return false;
680}
681
Reid Spencer5f016e22007-07-11 17:01:13 +0000682bool DeclSpec::SetTypeQual(TQ T, SourceLocation Loc, const char *&PrevSpec,
Richard Smithd654f2d2012-10-17 23:31:46 +0000683 unsigned &DiagID, const LangOptions &Lang) {
684 // Duplicates are permitted in C99, but are not permitted in C++. However,
685 // since this is likely not what the user intended, we will always warn. We
686 // do not need to set the qualifier's location since we already have it.
Aaron Ballmanc8286202012-08-28 20:55:40 +0000687 if (TypeQualifiers & T) {
Aaron Ballmana14f4002012-08-29 12:35:14 +0000688 bool IsExtension = true;
Richard Smithd654f2d2012-10-17 23:31:46 +0000689 if (Lang.C99)
Aaron Ballmana14f4002012-08-29 12:35:14 +0000690 IsExtension = false;
Aaron Ballmanc8286202012-08-28 20:55:40 +0000691 return BadSpecifier(T, T, PrevSpec, DiagID, IsExtension);
692 }
Reid Spencer5f016e22007-07-11 17:01:13 +0000693 TypeQualifiers |= T;
Mike Stump1eb44332009-09-09 15:08:12 +0000694
Reid Spencer5f016e22007-07-11 17:01:13 +0000695 switch (T) {
David Blaikieb219cfc2011-09-23 05:06:16 +0000696 default: llvm_unreachable("Unknown type qualifier!");
Reid Spencer5f016e22007-07-11 17:01:13 +0000697 case TQ_const: TQ_constLoc = Loc; break;
698 case TQ_restrict: TQ_restrictLoc = Loc; break;
699 case TQ_volatile: TQ_volatileLoc = Loc; break;
700 }
701 return false;
702}
703
John McCallfec54012009-08-03 20:12:06 +0000704bool DeclSpec::SetFunctionSpecInline(SourceLocation Loc, const char *&PrevSpec,
705 unsigned &DiagID) {
Reid Spencer5f016e22007-07-11 17:01:13 +0000706 // 'inline inline' is ok.
707 FS_inline_specified = true;
708 FS_inlineLoc = Loc;
709 return false;
710}
711
John McCallfec54012009-08-03 20:12:06 +0000712bool DeclSpec::SetFunctionSpecVirtual(SourceLocation Loc, const char *&PrevSpec,
713 unsigned &DiagID) {
Douglas Gregorb48fe382008-10-31 09:07:45 +0000714 // 'virtual virtual' is ok.
715 FS_virtual_specified = true;
716 FS_virtualLoc = Loc;
717 return false;
718}
719
John McCallfec54012009-08-03 20:12:06 +0000720bool DeclSpec::SetFunctionSpecExplicit(SourceLocation Loc, const char *&PrevSpec,
721 unsigned &DiagID) {
Douglas Gregorb48fe382008-10-31 09:07:45 +0000722 // 'explicit explicit' is ok.
723 FS_explicit_specified = true;
724 FS_explicitLoc = Loc;
725 return false;
726}
727
John McCallfec54012009-08-03 20:12:06 +0000728bool DeclSpec::SetFriendSpec(SourceLocation Loc, const char *&PrevSpec,
729 unsigned &DiagID) {
Anders Carlssonf47f7a12009-05-06 04:46:28 +0000730 if (Friend_specified) {
731 PrevSpec = "friend";
John McCallfec54012009-08-03 20:12:06 +0000732 DiagID = diag::ext_duplicate_declspec;
Anders Carlssonf47f7a12009-05-06 04:46:28 +0000733 return true;
734 }
John McCallfec54012009-08-03 20:12:06 +0000735
Anders Carlssonf47f7a12009-05-06 04:46:28 +0000736 Friend_specified = true;
737 FriendLoc = Loc;
738 return false;
739}
Reid Spencer5f016e22007-07-11 17:01:13 +0000740
Douglas Gregor8d267c52011-09-09 02:06:17 +0000741bool DeclSpec::setModulePrivateSpec(SourceLocation Loc, const char *&PrevSpec,
742 unsigned &DiagID) {
743 if (isModulePrivateSpecified()) {
744 PrevSpec = "__module_private__";
745 DiagID = diag::ext_duplicate_declspec;
746 return true;
747 }
748
749 ModulePrivateLoc = Loc;
750 return false;
751}
752
Sebastian Redl2ac67232009-11-05 15:47:02 +0000753bool DeclSpec::SetConstexprSpec(SourceLocation Loc, const char *&PrevSpec,
754 unsigned &DiagID) {
755 // 'constexpr constexpr' is ok.
756 Constexpr_specified = true;
757 ConstexprLoc = Loc;
758 return false;
759}
760
John McCalld226f652010-08-21 09:40:31 +0000761void DeclSpec::setProtocolQualifiers(Decl * const *Protos,
Argyrios Kyrtzidise3a535b2009-09-29 19:42:11 +0000762 unsigned NP,
763 SourceLocation *ProtoLocs,
764 SourceLocation LAngleLoc) {
765 if (NP == 0) return;
John McCalld226f652010-08-21 09:40:31 +0000766 ProtocolQualifiers = new Decl*[NP];
Argyrios Kyrtzidise3a535b2009-09-29 19:42:11 +0000767 ProtocolLocs = new SourceLocation[NP];
John McCalld226f652010-08-21 09:40:31 +0000768 memcpy((void*)ProtocolQualifiers, Protos, sizeof(Decl*)*NP);
Argyrios Kyrtzidise3a535b2009-09-29 19:42:11 +0000769 memcpy(ProtocolLocs, ProtoLocs, sizeof(SourceLocation)*NP);
770 NumProtocolQualifiers = NP;
771 ProtocolLAngleLoc = LAngleLoc;
772}
773
Douglas Gregorddf889a2010-01-18 18:04:31 +0000774void DeclSpec::SaveWrittenBuiltinSpecs() {
775 writtenBS.Sign = getTypeSpecSign();
776 writtenBS.Width = getTypeSpecWidth();
777 writtenBS.Type = getTypeSpecType();
778 // Search the list of attributes for the presence of a mode attribute.
779 writtenBS.ModeAttr = false;
John McCall7f040a92010-12-24 02:08:15 +0000780 AttributeList* attrs = getAttributes().getList();
Douglas Gregorddf889a2010-01-18 18:04:31 +0000781 while (attrs) {
Sean Hunt8e083e72012-06-19 23:57:03 +0000782 if (attrs->getKind() == AttributeList::AT_Mode) {
Douglas Gregorddf889a2010-01-18 18:04:31 +0000783 writtenBS.ModeAttr = true;
784 break;
785 }
786 attrs = attrs->getNext();
787 }
788}
789
Abramo Bagnara35f9a192010-07-30 16:47:02 +0000790void DeclSpec::SaveStorageSpecifierAsWritten() {
791 if (SCS_extern_in_linkage_spec && StorageClassSpec == SCS_extern)
792 // If 'extern' is part of a linkage specification,
793 // then it is not a storage class "as written".
794 StorageClassSpecAsWritten = SCS_unspecified;
795 else
796 StorageClassSpecAsWritten = StorageClassSpec;
797}
798
Reid Spencer5f016e22007-07-11 17:01:13 +0000799/// Finish - This does final analysis of the declspec, rejecting things like
800/// "_Imaginary" (lacking an FP type). This returns a diagnostic to issue or
801/// diag::NUM_DIAGNOSTICS if there is no error. After calling this method,
802/// DeclSpec is guaranteed self-consistent, even if an error occurred.
David Blaikied6471f72011-09-25 23:23:43 +0000803void DeclSpec::Finish(DiagnosticsEngine &D, Preprocessor &PP) {
Douglas Gregorddf889a2010-01-18 18:04:31 +0000804 // Before possibly changing their values, save specs as written.
805 SaveWrittenBuiltinSpecs();
Douglas Gregor16573fa2010-04-19 22:54:31 +0000806 SaveStorageSpecifierAsWritten();
Douglas Gregorddf889a2010-01-18 18:04:31 +0000807
Reid Spencer5f016e22007-07-11 17:01:13 +0000808 // Check the type specifier components first.
809
Chris Lattner788b0fd2010-06-23 06:00:24 +0000810 // Validate and finalize AltiVec vector declspec.
811 if (TypeAltiVecVector) {
812 if (TypeAltiVecBool) {
813 // Sign specifiers are not allowed with vector bool. (PIM 2.1)
814 if (TypeSpecSign != TSS_unspecified) {
Argyrios Kyrtzidis33e4e702010-11-18 20:06:41 +0000815 Diag(D, TSSLoc, diag::err_invalid_vector_bool_decl_spec)
Chris Lattner788b0fd2010-06-23 06:00:24 +0000816 << getSpecifierName((TSS)TypeSpecSign);
817 }
818
819 // Only char/int are valid with vector bool. (PIM 2.1)
Duncan Sands2e964a922010-06-23 19:34:52 +0000820 if (((TypeSpecType != TST_unspecified) && (TypeSpecType != TST_char) &&
821 (TypeSpecType != TST_int)) || TypeAltiVecPixel) {
Argyrios Kyrtzidis33e4e702010-11-18 20:06:41 +0000822 Diag(D, TSTLoc, diag::err_invalid_vector_bool_decl_spec)
Chris Lattner788b0fd2010-06-23 06:00:24 +0000823 << (TypeAltiVecPixel ? "__pixel" :
824 getSpecifierName((TST)TypeSpecType));
825 }
826
827 // Only 'short' is valid with vector bool. (PIM 2.1)
828 if ((TypeSpecWidth != TSW_unspecified) && (TypeSpecWidth != TSW_short))
Argyrios Kyrtzidis33e4e702010-11-18 20:06:41 +0000829 Diag(D, TSWLoc, diag::err_invalid_vector_bool_decl_spec)
Chris Lattner788b0fd2010-06-23 06:00:24 +0000830 << getSpecifierName((TSW)TypeSpecWidth);
831
832 // Elements of vector bool are interpreted as unsigned. (PIM 2.1)
833 if ((TypeSpecType == TST_char) || (TypeSpecType == TST_int) ||
834 (TypeSpecWidth != TSW_unspecified))
835 TypeSpecSign = TSS_unsigned;
836 }
837
838 if (TypeAltiVecPixel) {
839 //TODO: perform validation
840 TypeSpecType = TST_int;
841 TypeSpecSign = TSS_unsigned;
842 TypeSpecWidth = TSW_short;
John McCall9e46b8c2010-08-26 17:22:34 +0000843 TypeSpecOwned = false;
Chris Lattner788b0fd2010-06-23 06:00:24 +0000844 }
845 }
846
Argyrios Kyrtzidis64c438a2008-08-09 16:51:54 +0000847 // signed/unsigned are only valid with int/char/wchar_t.
Reid Spencer5f016e22007-07-11 17:01:13 +0000848 if (TypeSpecSign != TSS_unspecified) {
849 if (TypeSpecType == TST_unspecified)
850 TypeSpecType = TST_int; // unsigned -> unsigned int, signed -> signed int.
Richard Smith5a5a9712012-04-04 06:24:32 +0000851 else if (TypeSpecType != TST_int && TypeSpecType != TST_int128 &&
Argyrios Kyrtzidis64c438a2008-08-09 16:51:54 +0000852 TypeSpecType != TST_char && TypeSpecType != TST_wchar) {
Argyrios Kyrtzidis33e4e702010-11-18 20:06:41 +0000853 Diag(D, TSSLoc, diag::err_invalid_sign_spec)
Chris Lattner254be6a2008-11-22 08:32:36 +0000854 << getSpecifierName((TST)TypeSpecType);
Reid Spencer5f016e22007-07-11 17:01:13 +0000855 // signed double -> double.
856 TypeSpecSign = TSS_unspecified;
857 }
858 }
859
860 // Validate the width of the type.
861 switch (TypeSpecWidth) {
862 case TSW_unspecified: break;
863 case TSW_short: // short int
864 case TSW_longlong: // long long int
865 if (TypeSpecType == TST_unspecified)
866 TypeSpecType = TST_int; // short -> short int, long long -> long long int.
867 else if (TypeSpecType != TST_int) {
Argyrios Kyrtzidis33e4e702010-11-18 20:06:41 +0000868 Diag(D, TSWLoc,
Reid Spencer5f016e22007-07-11 17:01:13 +0000869 TypeSpecWidth == TSW_short ? diag::err_invalid_short_spec
Chris Lattner254be6a2008-11-22 08:32:36 +0000870 : diag::err_invalid_longlong_spec)
871 << getSpecifierName((TST)TypeSpecType);
Reid Spencer5f016e22007-07-11 17:01:13 +0000872 TypeSpecType = TST_int;
John McCall9e46b8c2010-08-26 17:22:34 +0000873 TypeSpecOwned = false;
Reid Spencer5f016e22007-07-11 17:01:13 +0000874 }
875 break;
876 case TSW_long: // long double, long int
877 if (TypeSpecType == TST_unspecified)
878 TypeSpecType = TST_int; // long -> long int.
879 else if (TypeSpecType != TST_int && TypeSpecType != TST_double) {
Argyrios Kyrtzidis33e4e702010-11-18 20:06:41 +0000880 Diag(D, TSWLoc, diag::err_invalid_long_spec)
Chris Lattner254be6a2008-11-22 08:32:36 +0000881 << getSpecifierName((TST)TypeSpecType);
Reid Spencer5f016e22007-07-11 17:01:13 +0000882 TypeSpecType = TST_int;
John McCall9e46b8c2010-08-26 17:22:34 +0000883 TypeSpecOwned = false;
Reid Spencer5f016e22007-07-11 17:01:13 +0000884 }
885 break;
886 }
Mike Stump1eb44332009-09-09 15:08:12 +0000887
Reid Spencer5f016e22007-07-11 17:01:13 +0000888 // TODO: if the implementation does not implement _Complex or _Imaginary,
889 // disallow their use. Need information about the backend.
890 if (TypeSpecComplex != TSC_unspecified) {
891 if (TypeSpecType == TST_unspecified) {
Argyrios Kyrtzidis33e4e702010-11-18 20:06:41 +0000892 Diag(D, TSCLoc, diag::ext_plain_complex)
Douglas Gregor849b2432010-03-31 17:46:05 +0000893 << FixItHint::CreateInsertion(
Douglas Gregor9b3064b2009-04-01 22:41:11 +0000894 PP.getLocForEndOfToken(getTypeSpecComplexLoc()),
895 " double");
Reid Spencer5f016e22007-07-11 17:01:13 +0000896 TypeSpecType = TST_double; // _Complex -> _Complex double.
897 } else if (TypeSpecType == TST_int || TypeSpecType == TST_char) {
898 // Note that this intentionally doesn't include _Complex _Bool.
David Blaikie4e4d0842012-03-11 07:00:24 +0000899 if (!PP.getLangOpts().CPlusPlus)
Eli Friedman7ead5c72012-01-10 04:58:17 +0000900 Diag(D, TSTLoc, diag::ext_integer_complex);
Reid Spencer5f016e22007-07-11 17:01:13 +0000901 } else if (TypeSpecType != TST_float && TypeSpecType != TST_double) {
Argyrios Kyrtzidis33e4e702010-11-18 20:06:41 +0000902 Diag(D, TSCLoc, diag::err_invalid_complex_spec)
Chris Lattner254be6a2008-11-22 08:32:36 +0000903 << getSpecifierName((TST)TypeSpecType);
Reid Spencer5f016e22007-07-11 17:01:13 +0000904 TypeSpecComplex = TSC_unspecified;
905 }
906 }
Reid Spencer5f016e22007-07-11 17:01:13 +0000907
Richard Smith8f4fb192011-09-04 19:54:14 +0000908 // If no type specifier was provided and we're parsing a language where
909 // the type specifier is not optional, but we got 'auto' as a storage
910 // class specifier, then assume this is an attempt to use C++0x's 'auto'
911 // type specifier.
912 // FIXME: Does Microsoft really support implicit int in C++?
David Blaikie4e4d0842012-03-11 07:00:24 +0000913 if (PP.getLangOpts().CPlusPlus && !PP.getLangOpts().MicrosoftExt &&
Richard Smith8f4fb192011-09-04 19:54:14 +0000914 TypeSpecType == TST_unspecified && StorageClassSpec == SCS_auto) {
915 TypeSpecType = TST_auto;
916 StorageClassSpec = StorageClassSpecAsWritten = SCS_unspecified;
917 TSTLoc = TSTNameLoc = StorageClassSpecLoc;
918 StorageClassSpecLoc = SourceLocation();
919 }
920 // Diagnose if we've recovered from an ill-formed 'auto' storage class
921 // specifier in a pre-C++0x dialect of C++.
David Blaikie4e4d0842012-03-11 07:00:24 +0000922 if (!PP.getLangOpts().CPlusPlus0x && TypeSpecType == TST_auto)
Richard Smith8f4fb192011-09-04 19:54:14 +0000923 Diag(D, TSTLoc, diag::ext_auto_type_specifier);
David Blaikie4e4d0842012-03-11 07:00:24 +0000924 if (PP.getLangOpts().CPlusPlus && !PP.getLangOpts().CPlusPlus0x &&
Richard Smith8f4fb192011-09-04 19:54:14 +0000925 StorageClassSpec == SCS_auto)
926 Diag(D, StorageClassSpecLoc, diag::warn_auto_storage_class)
927 << FixItHint::CreateRemoval(StorageClassSpecLoc);
Richard Smith841804b2011-10-17 23:06:20 +0000928 if (TypeSpecType == TST_char16 || TypeSpecType == TST_char32)
929 Diag(D, TSTLoc, diag::warn_cxx98_compat_unicode_type)
930 << (TypeSpecType == TST_char16 ? "char16_t" : "char32_t");
Richard Smith841804b2011-10-17 23:06:20 +0000931 if (Constexpr_specified)
932 Diag(D, ConstexprLoc, diag::warn_cxx98_compat_constexpr);
Richard Smith8f4fb192011-09-04 19:54:14 +0000933
John McCall67d1a672009-08-06 02:15:43 +0000934 // C++ [class.friend]p6:
935 // No storage-class-specifier shall appear in the decl-specifier-seq
936 // of a friend declaration.
937 if (isFriendSpecified() && getStorageClassSpec()) {
938 DeclSpec::SCS SC = getStorageClassSpec();
939 const char *SpecName = getSpecifierName(SC);
940
941 SourceLocation SCLoc = getStorageClassSpecLoc();
Argyrios Kyrtzidisa64ccef2011-09-19 20:40:19 +0000942 SourceLocation SCEndLoc = SCLoc.getLocWithOffset(strlen(SpecName));
John McCall67d1a672009-08-06 02:15:43 +0000943
Argyrios Kyrtzidis33e4e702010-11-18 20:06:41 +0000944 Diag(D, SCLoc, diag::err_friend_storage_spec)
John McCall67d1a672009-08-06 02:15:43 +0000945 << SpecName
Douglas Gregor849b2432010-03-31 17:46:05 +0000946 << FixItHint::CreateRemoval(SourceRange(SCLoc, SCEndLoc));
John McCall67d1a672009-08-06 02:15:43 +0000947
948 ClearStorageClassSpecs();
949 }
950
Douglas Gregor6274d302011-09-09 21:14:29 +0000951 assert(!TypeSpecOwned || isDeclRep((TST) TypeSpecType));
952
Reid Spencer5f016e22007-07-11 17:01:13 +0000953 // Okay, now we can infer the real type.
Mike Stump1eb44332009-09-09 15:08:12 +0000954
Reid Spencer5f016e22007-07-11 17:01:13 +0000955 // TODO: return "auto function" and other bad things based on the real type.
Mike Stump1eb44332009-09-09 15:08:12 +0000956
Reid Spencer5f016e22007-07-11 17:01:13 +0000957 // 'data definition has no type or storage class'?
958}
Daniel Dunbare4858a62008-08-11 03:45:03 +0000959
Sebastian Redla4ed0d82008-12-28 15:28:59 +0000960bool DeclSpec::isMissingDeclaratorOk() {
961 TST tst = getTypeSpecType();
John McCallb3d87482010-08-24 05:47:05 +0000962 return isDeclRep(tst) && getRepAsDecl() != 0 &&
963 StorageClassSpec != DeclSpec::SCS_typedef;
Sebastian Redla4ed0d82008-12-28 15:28:59 +0000964}
Douglas Gregor3f9a0562009-11-03 01:35:08 +0000965
Douglas Gregor3f9a0562009-11-03 01:35:08 +0000966void UnqualifiedId::setOperatorFunctionId(SourceLocation OperatorLoc,
967 OverloadedOperatorKind Op,
968 SourceLocation SymbolLocations[3]) {
969 Kind = IK_OperatorFunctionId;
970 StartLocation = OperatorLoc;
971 EndLocation = OperatorLoc;
972 OperatorFunctionId.Operator = Op;
973 for (unsigned I = 0; I != 3; ++I) {
974 OperatorFunctionId.SymbolLocations[I] = SymbolLocations[I].getRawEncoding();
975
976 if (SymbolLocations[I].isValid())
977 EndLocation = SymbolLocations[I];
978 }
979}
Anders Carlssonb971dbd2011-01-17 03:05:47 +0000980
Anders Carlssoncc54d592011-01-22 16:56:46 +0000981bool VirtSpecifiers::SetSpecifier(Specifier VS, SourceLocation Loc,
Anders Carlsson46127a92011-01-22 15:58:16 +0000982 const char *&PrevSpec) {
Douglas Gregorf5251602011-03-08 17:10:18 +0000983 LastLocation = Loc;
984
Anders Carlssonb971dbd2011-01-17 03:05:47 +0000985 if (Specifiers & VS) {
986 PrevSpec = getSpecifierName(VS);
987 return true;
988 }
989
990 Specifiers |= VS;
991
992 switch (VS) {
David Blaikieb219cfc2011-09-23 05:06:16 +0000993 default: llvm_unreachable("Unknown specifier!");
Anders Carlssonb971dbd2011-01-17 03:05:47 +0000994 case VS_Override: VS_overrideLoc = Loc; break;
995 case VS_Final: VS_finalLoc = Loc; break;
Anders Carlssonb971dbd2011-01-17 03:05:47 +0000996 }
Anders Carlsson46127a92011-01-22 15:58:16 +0000997
Anders Carlssonb971dbd2011-01-17 03:05:47 +0000998 return false;
999}
1000
Anders Carlssoncc54d592011-01-22 16:56:46 +00001001const char *VirtSpecifiers::getSpecifierName(Specifier VS) {
Anders Carlssonc46bb7d2011-01-22 15:11:37 +00001002 switch (VS) {
David Blaikieb219cfc2011-09-23 05:06:16 +00001003 default: llvm_unreachable("Unknown specifier");
Anders Carlssonc46bb7d2011-01-22 15:11:37 +00001004 case VS_Override: return "override";
1005 case VS_Final: return "final";
Anders Carlssonc46bb7d2011-01-22 15:11:37 +00001006 }
1007}