ParseDecl.cpp revision 9ae2f076ca5ab1feb3ba95629099ec2319833701
1//===--- ParseDecl.cpp - Declaration Parsing ------------------------------===// 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 implements the Declaration portions of the Parser interfaces. 11// 12//===----------------------------------------------------------------------===// 13 14#include "clang/Parse/Parser.h" 15#include "clang/Parse/ParseDiagnostic.h" 16#include "clang/Sema/Scope.h" 17#include "clang/Sema/ParsedTemplate.h" 18#include "RAIIObjectsForParser.h" 19#include "llvm/ADT/SmallSet.h" 20using namespace clang; 21 22//===----------------------------------------------------------------------===// 23// C99 6.7: Declarations. 24//===----------------------------------------------------------------------===// 25 26/// ParseTypeName 27/// type-name: [C99 6.7.6] 28/// specifier-qualifier-list abstract-declarator[opt] 29/// 30/// Called type-id in C++. 31Action::TypeResult Parser::ParseTypeName(SourceRange *Range) { 32 // Parse the common declaration-specifiers piece. 33 DeclSpec DS; 34 ParseSpecifierQualifierList(DS); 35 36 // Parse the abstract-declarator, if present. 37 Declarator DeclaratorInfo(DS, Declarator::TypeNameContext); 38 ParseDeclarator(DeclaratorInfo); 39 if (Range) 40 *Range = DeclaratorInfo.getSourceRange(); 41 42 if (DeclaratorInfo.isInvalidType()) 43 return true; 44 45 return Actions.ActOnTypeName(getCurScope(), DeclaratorInfo); 46} 47 48/// ParseGNUAttributes - Parse a non-empty attributes list. 49/// 50/// [GNU] attributes: 51/// attribute 52/// attributes attribute 53/// 54/// [GNU] attribute: 55/// '__attribute__' '(' '(' attribute-list ')' ')' 56/// 57/// [GNU] attribute-list: 58/// attrib 59/// attribute_list ',' attrib 60/// 61/// [GNU] attrib: 62/// empty 63/// attrib-name 64/// attrib-name '(' identifier ')' 65/// attrib-name '(' identifier ',' nonempty-expr-list ')' 66/// attrib-name '(' argument-expression-list [C99 6.5.2] ')' 67/// 68/// [GNU] attrib-name: 69/// identifier 70/// typespec 71/// typequal 72/// storageclass 73/// 74/// FIXME: The GCC grammar/code for this construct implies we need two 75/// token lookahead. Comment from gcc: "If they start with an identifier 76/// which is followed by a comma or close parenthesis, then the arguments 77/// start with that identifier; otherwise they are an expression list." 78/// 79/// At the moment, I am not doing 2 token lookahead. I am also unaware of 80/// any attributes that don't work (based on my limited testing). Most 81/// attributes are very simple in practice. Until we find a bug, I don't see 82/// a pressing need to implement the 2 token lookahead. 83 84AttributeList *Parser::ParseGNUAttributes(SourceLocation *EndLoc) { 85 assert(Tok.is(tok::kw___attribute) && "Not a GNU attribute list!"); 86 87 AttributeList *CurrAttr = 0; 88 89 while (Tok.is(tok::kw___attribute)) { 90 ConsumeToken(); 91 if (ExpectAndConsume(tok::l_paren, diag::err_expected_lparen_after, 92 "attribute")) { 93 SkipUntil(tok::r_paren, true); // skip until ) or ; 94 return CurrAttr; 95 } 96 if (ExpectAndConsume(tok::l_paren, diag::err_expected_lparen_after, "(")) { 97 SkipUntil(tok::r_paren, true); // skip until ) or ; 98 return CurrAttr; 99 } 100 // Parse the attribute-list. e.g. __attribute__(( weak, alias("__f") )) 101 while (Tok.is(tok::identifier) || isDeclarationSpecifier() || 102 Tok.is(tok::comma)) { 103 104 if (Tok.is(tok::comma)) { 105 // allows for empty/non-empty attributes. ((__vector_size__(16),,,,)) 106 ConsumeToken(); 107 continue; 108 } 109 // we have an identifier or declaration specifier (const, int, etc.) 110 IdentifierInfo *AttrName = Tok.getIdentifierInfo(); 111 SourceLocation AttrNameLoc = ConsumeToken(); 112 113 // check if we have a "parameterized" attribute 114 if (Tok.is(tok::l_paren)) { 115 ConsumeParen(); // ignore the left paren loc for now 116 117 if (Tok.is(tok::identifier)) { 118 IdentifierInfo *ParmName = Tok.getIdentifierInfo(); 119 SourceLocation ParmLoc = ConsumeToken(); 120 121 if (Tok.is(tok::r_paren)) { 122 // __attribute__(( mode(byte) )) 123 ConsumeParen(); // ignore the right paren loc for now 124 CurrAttr = new AttributeList(AttrName, AttrNameLoc, 0, AttrNameLoc, 125 ParmName, ParmLoc, 0, 0, CurrAttr); 126 } else if (Tok.is(tok::comma)) { 127 ConsumeToken(); 128 // __attribute__(( format(printf, 1, 2) )) 129 ExprVector ArgExprs(Actions); 130 bool ArgExprsOk = true; 131 132 // now parse the non-empty comma separated list of expressions 133 while (1) { 134 OwningExprResult ArgExpr(ParseAssignmentExpression()); 135 if (ArgExpr.isInvalid()) { 136 ArgExprsOk = false; 137 SkipUntil(tok::r_paren); 138 break; 139 } else { 140 ArgExprs.push_back(ArgExpr.release()); 141 } 142 if (Tok.isNot(tok::comma)) 143 break; 144 ConsumeToken(); // Eat the comma, move to the next argument 145 } 146 if (ArgExprsOk && Tok.is(tok::r_paren)) { 147 ConsumeParen(); // ignore the right paren loc for now 148 CurrAttr = new AttributeList(AttrName, AttrNameLoc, 0, 149 AttrNameLoc, ParmName, ParmLoc, 150 ArgExprs.take(), ArgExprs.size(), 151 CurrAttr); 152 } 153 } 154 } else { // not an identifier 155 switch (Tok.getKind()) { 156 case tok::r_paren: 157 // parse a possibly empty comma separated list of expressions 158 // __attribute__(( nonnull() )) 159 ConsumeParen(); // ignore the right paren loc for now 160 CurrAttr = new AttributeList(AttrName, AttrNameLoc, 0, AttrNameLoc, 161 0, SourceLocation(), 0, 0, CurrAttr); 162 break; 163 case tok::kw_char: 164 case tok::kw_wchar_t: 165 case tok::kw_char16_t: 166 case tok::kw_char32_t: 167 case tok::kw_bool: 168 case tok::kw_short: 169 case tok::kw_int: 170 case tok::kw_long: 171 case tok::kw_signed: 172 case tok::kw_unsigned: 173 case tok::kw_float: 174 case tok::kw_double: 175 case tok::kw_void: 176 case tok::kw_typeof: 177 CurrAttr = new AttributeList(AttrName, AttrNameLoc, 0, AttrNameLoc, 178 0, SourceLocation(), 0, 0, CurrAttr); 179 if (CurrAttr->getKind() == AttributeList::AT_IBOutletCollection) 180 Diag(Tok, diag::err_iboutletcollection_builtintype); 181 // If it's a builtin type name, eat it and expect a rparen 182 // __attribute__(( vec_type_hint(char) )) 183 ConsumeToken(); 184 if (Tok.is(tok::r_paren)) 185 ConsumeParen(); 186 break; 187 default: 188 // __attribute__(( aligned(16) )) 189 ExprVector ArgExprs(Actions); 190 bool ArgExprsOk = true; 191 192 // now parse the list of expressions 193 while (1) { 194 OwningExprResult ArgExpr(ParseAssignmentExpression()); 195 if (ArgExpr.isInvalid()) { 196 ArgExprsOk = false; 197 SkipUntil(tok::r_paren); 198 break; 199 } else { 200 ArgExprs.push_back(ArgExpr.release()); 201 } 202 if (Tok.isNot(tok::comma)) 203 break; 204 ConsumeToken(); // Eat the comma, move to the next argument 205 } 206 // Match the ')'. 207 if (ArgExprsOk && Tok.is(tok::r_paren)) { 208 ConsumeParen(); // ignore the right paren loc for now 209 CurrAttr = new AttributeList(AttrName, AttrNameLoc, 0, 210 AttrNameLoc, 0, SourceLocation(), ArgExprs.take(), 211 ArgExprs.size(), 212 CurrAttr); 213 } 214 break; 215 } 216 } 217 } else { 218 CurrAttr = new AttributeList(AttrName, AttrNameLoc, 0, AttrNameLoc, 219 0, SourceLocation(), 0, 0, CurrAttr); 220 } 221 } 222 if (ExpectAndConsume(tok::r_paren, diag::err_expected_rparen)) 223 SkipUntil(tok::r_paren, false); 224 SourceLocation Loc = Tok.getLocation(); 225 if (ExpectAndConsume(tok::r_paren, diag::err_expected_rparen)) { 226 SkipUntil(tok::r_paren, false); 227 } 228 if (EndLoc) 229 *EndLoc = Loc; 230 } 231 return CurrAttr; 232} 233 234/// ParseMicrosoftDeclSpec - Parse an __declspec construct 235/// 236/// [MS] decl-specifier: 237/// __declspec ( extended-decl-modifier-seq ) 238/// 239/// [MS] extended-decl-modifier-seq: 240/// extended-decl-modifier[opt] 241/// extended-decl-modifier extended-decl-modifier-seq 242 243AttributeList* Parser::ParseMicrosoftDeclSpec(AttributeList *CurrAttr) { 244 assert(Tok.is(tok::kw___declspec) && "Not a declspec!"); 245 246 ConsumeToken(); 247 if (ExpectAndConsume(tok::l_paren, diag::err_expected_lparen_after, 248 "declspec")) { 249 SkipUntil(tok::r_paren, true); // skip until ) or ; 250 return CurrAttr; 251 } 252 while (Tok.getIdentifierInfo()) { 253 IdentifierInfo *AttrName = Tok.getIdentifierInfo(); 254 SourceLocation AttrNameLoc = ConsumeToken(); 255 if (Tok.is(tok::l_paren)) { 256 ConsumeParen(); 257 // FIXME: This doesn't parse __declspec(property(get=get_func_name)) 258 // correctly. 259 OwningExprResult ArgExpr(ParseAssignmentExpression()); 260 if (!ArgExpr.isInvalid()) { 261 Expr *ExprList = ArgExpr.take(); 262 CurrAttr = new AttributeList(AttrName, AttrNameLoc, 0, AttrNameLoc, 0, 263 SourceLocation(), &ExprList, 1, 264 CurrAttr, true); 265 } 266 if (ExpectAndConsume(tok::r_paren, diag::err_expected_rparen)) 267 SkipUntil(tok::r_paren, false); 268 } else { 269 CurrAttr = new AttributeList(AttrName, AttrNameLoc, 0, AttrNameLoc, 270 0, SourceLocation(), 0, 0, CurrAttr, true); 271 } 272 } 273 if (ExpectAndConsume(tok::r_paren, diag::err_expected_rparen)) 274 SkipUntil(tok::r_paren, false); 275 return CurrAttr; 276} 277 278AttributeList* Parser::ParseMicrosoftTypeAttributes(AttributeList *CurrAttr) { 279 // Treat these like attributes 280 // FIXME: Allow Sema to distinguish between these and real attributes! 281 while (Tok.is(tok::kw___fastcall) || Tok.is(tok::kw___stdcall) || 282 Tok.is(tok::kw___thiscall) || Tok.is(tok::kw___cdecl) || 283 Tok.is(tok::kw___ptr64) || Tok.is(tok::kw___w64)) { 284 IdentifierInfo *AttrName = Tok.getIdentifierInfo(); 285 SourceLocation AttrNameLoc = ConsumeToken(); 286 if (Tok.is(tok::kw___ptr64) || Tok.is(tok::kw___w64)) 287 // FIXME: Support these properly! 288 continue; 289 CurrAttr = new AttributeList(AttrName, AttrNameLoc, 0, AttrNameLoc, 0, 290 SourceLocation(), 0, 0, CurrAttr, true); 291 } 292 return CurrAttr; 293} 294 295/// ParseDeclaration - Parse a full 'declaration', which consists of 296/// declaration-specifiers, some number of declarators, and a semicolon. 297/// 'Context' should be a Declarator::TheContext value. This returns the 298/// location of the semicolon in DeclEnd. 299/// 300/// declaration: [C99 6.7] 301/// block-declaration -> 302/// simple-declaration 303/// others [FIXME] 304/// [C++] template-declaration 305/// [C++] namespace-definition 306/// [C++] using-directive 307/// [C++] using-declaration 308/// [C++0x] static_assert-declaration 309/// others... [FIXME] 310/// 311Parser::DeclGroupPtrTy Parser::ParseDeclaration(unsigned Context, 312 SourceLocation &DeclEnd, 313 CXX0XAttributeList Attr) { 314 ParenBraceBracketBalancer BalancerRAIIObj(*this); 315 316 Decl *SingleDecl = 0; 317 switch (Tok.getKind()) { 318 case tok::kw_template: 319 case tok::kw_export: 320 if (Attr.HasAttr) 321 Diag(Attr.Range.getBegin(), diag::err_attributes_not_allowed) 322 << Attr.Range; 323 SingleDecl = ParseDeclarationStartingWithTemplate(Context, DeclEnd); 324 break; 325 case tok::kw_namespace: 326 if (Attr.HasAttr) 327 Diag(Attr.Range.getBegin(), diag::err_attributes_not_allowed) 328 << Attr.Range; 329 SingleDecl = ParseNamespace(Context, DeclEnd); 330 break; 331 case tok::kw_using: 332 SingleDecl = ParseUsingDirectiveOrDeclaration(Context, DeclEnd, Attr); 333 break; 334 case tok::kw_static_assert: 335 if (Attr.HasAttr) 336 Diag(Attr.Range.getBegin(), diag::err_attributes_not_allowed) 337 << Attr.Range; 338 SingleDecl = ParseStaticAssertDeclaration(DeclEnd); 339 break; 340 default: 341 return ParseSimpleDeclaration(Context, DeclEnd, Attr.AttrList, true); 342 } 343 344 // This routine returns a DeclGroup, if the thing we parsed only contains a 345 // single decl, convert it now. 346 return Actions.ConvertDeclToDeclGroup(SingleDecl); 347} 348 349/// simple-declaration: [C99 6.7: declaration] [C++ 7p1: dcl.dcl] 350/// declaration-specifiers init-declarator-list[opt] ';' 351///[C90/C++]init-declarator-list ';' [TODO] 352/// [OMP] threadprivate-directive [TODO] 353/// 354/// If RequireSemi is false, this does not check for a ';' at the end of the 355/// declaration. If it is true, it checks for and eats it. 356Parser::DeclGroupPtrTy Parser::ParseSimpleDeclaration(unsigned Context, 357 SourceLocation &DeclEnd, 358 AttributeList *Attr, 359 bool RequireSemi) { 360 // Parse the common declaration-specifiers piece. 361 ParsingDeclSpec DS(*this); 362 if (Attr) 363 DS.AddAttributes(Attr); 364 ParseDeclarationSpecifiers(DS, ParsedTemplateInfo(), AS_none, 365 getDeclSpecContextFromDeclaratorContext(Context)); 366 367 // C99 6.7.2.3p6: Handle "struct-or-union identifier;", "enum { X };" 368 // declaration-specifiers init-declarator-list[opt] ';' 369 if (Tok.is(tok::semi)) { 370 if (RequireSemi) ConsumeToken(); 371 Decl *TheDecl = Actions.ParsedFreeStandingDeclSpec(getCurScope(), AS_none, 372 DS); 373 DS.complete(TheDecl); 374 return Actions.ConvertDeclToDeclGroup(TheDecl); 375 } 376 377 return ParseDeclGroup(DS, Context, /*FunctionDefs=*/ false, &DeclEnd); 378} 379 380/// ParseDeclGroup - Having concluded that this is either a function 381/// definition or a group of object declarations, actually parse the 382/// result. 383Parser::DeclGroupPtrTy Parser::ParseDeclGroup(ParsingDeclSpec &DS, 384 unsigned Context, 385 bool AllowFunctionDefinitions, 386 SourceLocation *DeclEnd) { 387 // Parse the first declarator. 388 ParsingDeclarator D(*this, DS, static_cast<Declarator::TheContext>(Context)); 389 ParseDeclarator(D); 390 391 // Bail out if the first declarator didn't seem well-formed. 392 if (!D.hasName() && !D.mayOmitIdentifier()) { 393 // Skip until ; or }. 394 SkipUntil(tok::r_brace, true, true); 395 if (Tok.is(tok::semi)) 396 ConsumeToken(); 397 return DeclGroupPtrTy(); 398 } 399 400 // Check to see if we have a function *definition* which must have a body. 401 if (AllowFunctionDefinitions && D.isFunctionDeclarator() && 402 // Look at the next token to make sure that this isn't a function 403 // declaration. We have to check this because __attribute__ might be the 404 // start of a function definition in GCC-extended K&R C. 405 !isDeclarationAfterDeclarator()) { 406 407 if (isStartOfFunctionDefinition(D)) { 408 if (DS.getStorageClassSpec() == DeclSpec::SCS_typedef) { 409 Diag(Tok, diag::err_function_declared_typedef); 410 411 // Recover by treating the 'typedef' as spurious. 412 DS.ClearStorageClassSpecs(); 413 } 414 415 Decl *TheDecl = ParseFunctionDefinition(D); 416 return Actions.ConvertDeclToDeclGroup(TheDecl); 417 } 418 419 if (isDeclarationSpecifier()) { 420 // If there is an invalid declaration specifier right after the function 421 // prototype, then we must be in a missing semicolon case where this isn't 422 // actually a body. Just fall through into the code that handles it as a 423 // prototype, and let the top-level code handle the erroneous declspec 424 // where it would otherwise expect a comma or semicolon. 425 } else { 426 Diag(Tok, diag::err_expected_fn_body); 427 SkipUntil(tok::semi); 428 return DeclGroupPtrTy(); 429 } 430 } 431 432 llvm::SmallVector<Decl *, 8> DeclsInGroup; 433 Decl *FirstDecl = ParseDeclarationAfterDeclarator(D); 434 D.complete(FirstDecl); 435 if (FirstDecl) 436 DeclsInGroup.push_back(FirstDecl); 437 438 // If we don't have a comma, it is either the end of the list (a ';') or an 439 // error, bail out. 440 while (Tok.is(tok::comma)) { 441 // Consume the comma. 442 ConsumeToken(); 443 444 // Parse the next declarator. 445 D.clear(); 446 447 // Accept attributes in an init-declarator. In the first declarator in a 448 // declaration, these would be part of the declspec. In subsequent 449 // declarators, they become part of the declarator itself, so that they 450 // don't apply to declarators after *this* one. Examples: 451 // short __attribute__((common)) var; -> declspec 452 // short var __attribute__((common)); -> declarator 453 // short x, __attribute__((common)) var; -> declarator 454 if (Tok.is(tok::kw___attribute)) { 455 SourceLocation Loc; 456 AttributeList *AttrList = ParseGNUAttributes(&Loc); 457 D.AddAttributes(AttrList, Loc); 458 } 459 460 ParseDeclarator(D); 461 462 Decl *ThisDecl = ParseDeclarationAfterDeclarator(D); 463 D.complete(ThisDecl); 464 if (ThisDecl) 465 DeclsInGroup.push_back(ThisDecl); 466 } 467 468 if (DeclEnd) 469 *DeclEnd = Tok.getLocation(); 470 471 if (Context != Declarator::ForContext && 472 ExpectAndConsume(tok::semi, 473 Context == Declarator::FileContext 474 ? diag::err_invalid_token_after_toplevel_declarator 475 : diag::err_expected_semi_declaration)) { 476 // Okay, there was no semicolon and one was expected. If we see a 477 // declaration specifier, just assume it was missing and continue parsing. 478 // Otherwise things are very confused and we skip to recover. 479 if (!isDeclarationSpecifier()) { 480 SkipUntil(tok::r_brace, true, true); 481 if (Tok.is(tok::semi)) 482 ConsumeToken(); 483 } 484 } 485 486 return Actions.FinalizeDeclaratorGroup(getCurScope(), DS, 487 DeclsInGroup.data(), 488 DeclsInGroup.size()); 489} 490 491/// \brief Parse 'declaration' after parsing 'declaration-specifiers 492/// declarator'. This method parses the remainder of the declaration 493/// (including any attributes or initializer, among other things) and 494/// finalizes the declaration. 495/// 496/// init-declarator: [C99 6.7] 497/// declarator 498/// declarator '=' initializer 499/// [GNU] declarator simple-asm-expr[opt] attributes[opt] 500/// [GNU] declarator simple-asm-expr[opt] attributes[opt] '=' initializer 501/// [C++] declarator initializer[opt] 502/// 503/// [C++] initializer: 504/// [C++] '=' initializer-clause 505/// [C++] '(' expression-list ')' 506/// [C++0x] '=' 'default' [TODO] 507/// [C++0x] '=' 'delete' 508/// 509/// According to the standard grammar, =default and =delete are function 510/// definitions, but that definitely doesn't fit with the parser here. 511/// 512Decl *Parser::ParseDeclarationAfterDeclarator(Declarator &D, 513 const ParsedTemplateInfo &TemplateInfo) { 514 // If a simple-asm-expr is present, parse it. 515 if (Tok.is(tok::kw_asm)) { 516 SourceLocation Loc; 517 OwningExprResult AsmLabel(ParseSimpleAsm(&Loc)); 518 if (AsmLabel.isInvalid()) { 519 SkipUntil(tok::semi, true, true); 520 return 0; 521 } 522 523 D.setAsmLabel(AsmLabel.release()); 524 D.SetRangeEnd(Loc); 525 } 526 527 // If attributes are present, parse them. 528 if (Tok.is(tok::kw___attribute)) { 529 SourceLocation Loc; 530 AttributeList *AttrList = ParseGNUAttributes(&Loc); 531 D.AddAttributes(AttrList, Loc); 532 } 533 534 // Inform the current actions module that we just parsed this declarator. 535 Decl *ThisDecl = 0; 536 switch (TemplateInfo.Kind) { 537 case ParsedTemplateInfo::NonTemplate: 538 ThisDecl = Actions.ActOnDeclarator(getCurScope(), D); 539 break; 540 541 case ParsedTemplateInfo::Template: 542 case ParsedTemplateInfo::ExplicitSpecialization: 543 ThisDecl = Actions.ActOnTemplateDeclarator(getCurScope(), 544 Action::MultiTemplateParamsArg(Actions, 545 TemplateInfo.TemplateParams->data(), 546 TemplateInfo.TemplateParams->size()), 547 D); 548 break; 549 550 case ParsedTemplateInfo::ExplicitInstantiation: { 551 DeclResult ThisRes 552 = Actions.ActOnExplicitInstantiation(getCurScope(), 553 TemplateInfo.ExternLoc, 554 TemplateInfo.TemplateLoc, 555 D); 556 if (ThisRes.isInvalid()) { 557 SkipUntil(tok::semi, true, true); 558 return 0; 559 } 560 561 ThisDecl = ThisRes.get(); 562 break; 563 } 564 } 565 566 // Parse declarator '=' initializer. 567 if (Tok.is(tok::equal)) { 568 ConsumeToken(); 569 if (getLang().CPlusPlus0x && Tok.is(tok::kw_delete)) { 570 SourceLocation DelLoc = ConsumeToken(); 571 Actions.SetDeclDeleted(ThisDecl, DelLoc); 572 } else { 573 if (getLang().CPlusPlus && D.getCXXScopeSpec().isSet()) { 574 EnterScope(0); 575 Actions.ActOnCXXEnterDeclInitializer(getCurScope(), ThisDecl); 576 } 577 578 if (Tok.is(tok::code_completion)) { 579 Actions.CodeCompleteInitializer(getCurScope(), ThisDecl); 580 ConsumeCodeCompletionToken(); 581 SkipUntil(tok::comma, true, true); 582 return ThisDecl; 583 } 584 585 OwningExprResult Init(ParseInitializer()); 586 587 if (getLang().CPlusPlus && D.getCXXScopeSpec().isSet()) { 588 Actions.ActOnCXXExitDeclInitializer(getCurScope(), ThisDecl); 589 ExitScope(); 590 } 591 592 if (Init.isInvalid()) { 593 SkipUntil(tok::comma, true, true); 594 Actions.ActOnInitializerError(ThisDecl); 595 } else 596 Actions.AddInitializerToDecl(ThisDecl, Init.take()); 597 } 598 } else if (Tok.is(tok::l_paren)) { 599 // Parse C++ direct initializer: '(' expression-list ')' 600 SourceLocation LParenLoc = ConsumeParen(); 601 ExprVector Exprs(Actions); 602 CommaLocsTy CommaLocs; 603 604 if (getLang().CPlusPlus && D.getCXXScopeSpec().isSet()) { 605 EnterScope(0); 606 Actions.ActOnCXXEnterDeclInitializer(getCurScope(), ThisDecl); 607 } 608 609 if (ParseExpressionList(Exprs, CommaLocs)) { 610 SkipUntil(tok::r_paren); 611 612 if (getLang().CPlusPlus && D.getCXXScopeSpec().isSet()) { 613 Actions.ActOnCXXExitDeclInitializer(getCurScope(), ThisDecl); 614 ExitScope(); 615 } 616 } else { 617 // Match the ')'. 618 SourceLocation RParenLoc = MatchRHSPunctuation(tok::r_paren, LParenLoc); 619 620 assert(!Exprs.empty() && Exprs.size()-1 == CommaLocs.size() && 621 "Unexpected number of commas!"); 622 623 if (getLang().CPlusPlus && D.getCXXScopeSpec().isSet()) { 624 Actions.ActOnCXXExitDeclInitializer(getCurScope(), ThisDecl); 625 ExitScope(); 626 } 627 628 Actions.AddCXXDirectInitializerToDecl(ThisDecl, LParenLoc, 629 move_arg(Exprs), 630 CommaLocs.data(), RParenLoc); 631 } 632 } else { 633 bool TypeContainsUndeducedAuto = 634 D.getDeclSpec().getTypeSpecType() == DeclSpec::TST_auto; 635 Actions.ActOnUninitializedDecl(ThisDecl, TypeContainsUndeducedAuto); 636 } 637 638 return ThisDecl; 639} 640 641/// ParseSpecifierQualifierList 642/// specifier-qualifier-list: 643/// type-specifier specifier-qualifier-list[opt] 644/// type-qualifier specifier-qualifier-list[opt] 645/// [GNU] attributes specifier-qualifier-list[opt] 646/// 647void Parser::ParseSpecifierQualifierList(DeclSpec &DS) { 648 /// specifier-qualifier-list is a subset of declaration-specifiers. Just 649 /// parse declaration-specifiers and complain about extra stuff. 650 ParseDeclarationSpecifiers(DS); 651 652 // Validate declspec for type-name. 653 unsigned Specs = DS.getParsedSpecifiers(); 654 if (Specs == DeclSpec::PQ_None && !DS.getNumProtocolQualifiers() && 655 !DS.getAttributes()) 656 Diag(Tok, diag::err_typename_requires_specqual); 657 658 // Issue diagnostic and remove storage class if present. 659 if (Specs & DeclSpec::PQ_StorageClassSpecifier) { 660 if (DS.getStorageClassSpecLoc().isValid()) 661 Diag(DS.getStorageClassSpecLoc(),diag::err_typename_invalid_storageclass); 662 else 663 Diag(DS.getThreadSpecLoc(), diag::err_typename_invalid_storageclass); 664 DS.ClearStorageClassSpecs(); 665 } 666 667 // Issue diagnostic and remove function specfier if present. 668 if (Specs & DeclSpec::PQ_FunctionSpecifier) { 669 if (DS.isInlineSpecified()) 670 Diag(DS.getInlineSpecLoc(), diag::err_typename_invalid_functionspec); 671 if (DS.isVirtualSpecified()) 672 Diag(DS.getVirtualSpecLoc(), diag::err_typename_invalid_functionspec); 673 if (DS.isExplicitSpecified()) 674 Diag(DS.getExplicitSpecLoc(), diag::err_typename_invalid_functionspec); 675 DS.ClearFunctionSpecs(); 676 } 677} 678 679/// isValidAfterIdentifierInDeclaratorAfterDeclSpec - Return true if the 680/// specified token is valid after the identifier in a declarator which 681/// immediately follows the declspec. For example, these things are valid: 682/// 683/// int x [ 4]; // direct-declarator 684/// int x ( int y); // direct-declarator 685/// int(int x ) // direct-declarator 686/// int x ; // simple-declaration 687/// int x = 17; // init-declarator-list 688/// int x , y; // init-declarator-list 689/// int x __asm__ ("foo"); // init-declarator-list 690/// int x : 4; // struct-declarator 691/// int x { 5}; // C++'0x unified initializers 692/// 693/// This is not, because 'x' does not immediately follow the declspec (though 694/// ')' happens to be valid anyway). 695/// int (x) 696/// 697static bool isValidAfterIdentifierInDeclarator(const Token &T) { 698 return T.is(tok::l_square) || T.is(tok::l_paren) || T.is(tok::r_paren) || 699 T.is(tok::semi) || T.is(tok::comma) || T.is(tok::equal) || 700 T.is(tok::kw_asm) || T.is(tok::l_brace) || T.is(tok::colon); 701} 702 703 704/// ParseImplicitInt - This method is called when we have an non-typename 705/// identifier in a declspec (which normally terminates the decl spec) when 706/// the declspec has no type specifier. In this case, the declspec is either 707/// malformed or is "implicit int" (in K&R and C89). 708/// 709/// This method handles diagnosing this prettily and returns false if the 710/// declspec is done being processed. If it recovers and thinks there may be 711/// other pieces of declspec after it, it returns true. 712/// 713bool Parser::ParseImplicitInt(DeclSpec &DS, CXXScopeSpec *SS, 714 const ParsedTemplateInfo &TemplateInfo, 715 AccessSpecifier AS) { 716 assert(Tok.is(tok::identifier) && "should have identifier"); 717 718 SourceLocation Loc = Tok.getLocation(); 719 // If we see an identifier that is not a type name, we normally would 720 // parse it as the identifer being declared. However, when a typename 721 // is typo'd or the definition is not included, this will incorrectly 722 // parse the typename as the identifier name and fall over misparsing 723 // later parts of the diagnostic. 724 // 725 // As such, we try to do some look-ahead in cases where this would 726 // otherwise be an "implicit-int" case to see if this is invalid. For 727 // example: "static foo_t x = 4;" In this case, if we parsed foo_t as 728 // an identifier with implicit int, we'd get a parse error because the 729 // next token is obviously invalid for a type. Parse these as a case 730 // with an invalid type specifier. 731 assert(!DS.hasTypeSpecifier() && "Type specifier checked above"); 732 733 // Since we know that this either implicit int (which is rare) or an 734 // error, we'd do lookahead to try to do better recovery. 735 if (isValidAfterIdentifierInDeclarator(NextToken())) { 736 // If this token is valid for implicit int, e.g. "static x = 4", then 737 // we just avoid eating the identifier, so it will be parsed as the 738 // identifier in the declarator. 739 return false; 740 } 741 742 // Otherwise, if we don't consume this token, we are going to emit an 743 // error anyway. Try to recover from various common problems. Check 744 // to see if this was a reference to a tag name without a tag specified. 745 // This is a common problem in C (saying 'foo' instead of 'struct foo'). 746 // 747 // C++ doesn't need this, and isTagName doesn't take SS. 748 if (SS == 0) { 749 const char *TagName = 0; 750 tok::TokenKind TagKind = tok::unknown; 751 752 switch (Actions.isTagName(*Tok.getIdentifierInfo(), getCurScope())) { 753 default: break; 754 case DeclSpec::TST_enum: TagName="enum" ;TagKind=tok::kw_enum ;break; 755 case DeclSpec::TST_union: TagName="union" ;TagKind=tok::kw_union ;break; 756 case DeclSpec::TST_struct:TagName="struct";TagKind=tok::kw_struct;break; 757 case DeclSpec::TST_class: TagName="class" ;TagKind=tok::kw_class ;break; 758 } 759 760 if (TagName) { 761 Diag(Loc, diag::err_use_of_tag_name_without_tag) 762 << Tok.getIdentifierInfo() << TagName << getLang().CPlusPlus 763 << FixItHint::CreateInsertion(Tok.getLocation(),TagName); 764 765 // Parse this as a tag as if the missing tag were present. 766 if (TagKind == tok::kw_enum) 767 ParseEnumSpecifier(Loc, DS, TemplateInfo, AS); 768 else 769 ParseClassSpecifier(TagKind, Loc, DS, TemplateInfo, AS); 770 return true; 771 } 772 } 773 774 // This is almost certainly an invalid type name. Let the action emit a 775 // diagnostic and attempt to recover. 776 Action::TypeTy *T = 0; 777 if (Actions.DiagnoseUnknownTypeName(*Tok.getIdentifierInfo(), Loc, 778 getCurScope(), SS, T)) { 779 // The action emitted a diagnostic, so we don't have to. 780 if (T) { 781 // The action has suggested that the type T could be used. Set that as 782 // the type in the declaration specifiers, consume the would-be type 783 // name token, and we're done. 784 const char *PrevSpec; 785 unsigned DiagID; 786 DS.SetTypeSpecType(DeclSpec::TST_typename, Loc, PrevSpec, DiagID, T, 787 false); 788 DS.SetRangeEnd(Tok.getLocation()); 789 ConsumeToken(); 790 791 // There may be other declaration specifiers after this. 792 return true; 793 } 794 795 // Fall through; the action had no suggestion for us. 796 } else { 797 // The action did not emit a diagnostic, so emit one now. 798 SourceRange R; 799 if (SS) R = SS->getRange(); 800 Diag(Loc, diag::err_unknown_typename) << Tok.getIdentifierInfo() << R; 801 } 802 803 // Mark this as an error. 804 const char *PrevSpec; 805 unsigned DiagID; 806 DS.SetTypeSpecType(DeclSpec::TST_error, Loc, PrevSpec, DiagID); 807 DS.SetRangeEnd(Tok.getLocation()); 808 ConsumeToken(); 809 810 // TODO: Could inject an invalid typedef decl in an enclosing scope to 811 // avoid rippling error messages on subsequent uses of the same type, 812 // could be useful if #include was forgotten. 813 return false; 814} 815 816/// \brief Determine the declaration specifier context from the declarator 817/// context. 818/// 819/// \param Context the declarator context, which is one of the 820/// Declarator::TheContext enumerator values. 821Parser::DeclSpecContext 822Parser::getDeclSpecContextFromDeclaratorContext(unsigned Context) { 823 if (Context == Declarator::MemberContext) 824 return DSC_class; 825 if (Context == Declarator::FileContext) 826 return DSC_top_level; 827 return DSC_normal; 828} 829 830/// ParseDeclarationSpecifiers 831/// declaration-specifiers: [C99 6.7] 832/// storage-class-specifier declaration-specifiers[opt] 833/// type-specifier declaration-specifiers[opt] 834/// [C99] function-specifier declaration-specifiers[opt] 835/// [GNU] attributes declaration-specifiers[opt] 836/// 837/// storage-class-specifier: [C99 6.7.1] 838/// 'typedef' 839/// 'extern' 840/// 'static' 841/// 'auto' 842/// 'register' 843/// [C++] 'mutable' 844/// [GNU] '__thread' 845/// function-specifier: [C99 6.7.4] 846/// [C99] 'inline' 847/// [C++] 'virtual' 848/// [C++] 'explicit' 849/// 'friend': [C++ dcl.friend] 850/// 'constexpr': [C++0x dcl.constexpr] 851 852/// 853void Parser::ParseDeclarationSpecifiers(DeclSpec &DS, 854 const ParsedTemplateInfo &TemplateInfo, 855 AccessSpecifier AS, 856 DeclSpecContext DSContext) { 857 DS.SetRangeStart(Tok.getLocation()); 858 while (1) { 859 bool isInvalid = false; 860 const char *PrevSpec = 0; 861 unsigned DiagID = 0; 862 863 SourceLocation Loc = Tok.getLocation(); 864 865 switch (Tok.getKind()) { 866 default: 867 DoneWithDeclSpec: 868 // If this is not a declaration specifier token, we're done reading decl 869 // specifiers. First verify that DeclSpec's are consistent. 870 DS.Finish(Diags, PP); 871 return; 872 873 case tok::code_completion: { 874 Action::ParserCompletionContext CCC = Action::PCC_Namespace; 875 if (DS.hasTypeSpecifier()) { 876 bool AllowNonIdentifiers 877 = (getCurScope()->getFlags() & (Scope::ControlScope | 878 Scope::BlockScope | 879 Scope::TemplateParamScope | 880 Scope::FunctionPrototypeScope | 881 Scope::AtCatchScope)) == 0; 882 bool AllowNestedNameSpecifiers 883 = DSContext == DSC_top_level || 884 (DSContext == DSC_class && DS.isFriendSpecified()); 885 886 Actions.CodeCompleteDeclarator(getCurScope(), AllowNonIdentifiers, 887 AllowNestedNameSpecifiers); 888 ConsumeCodeCompletionToken(); 889 return; 890 } 891 892 if (TemplateInfo.Kind != ParsedTemplateInfo::NonTemplate) 893 CCC = DSContext == DSC_class? Action::PCC_MemberTemplate 894 : Action::PCC_Template; 895 else if (DSContext == DSC_class) 896 CCC = Action::PCC_Class; 897 else if (ObjCImpDecl) 898 CCC = Action::PCC_ObjCImplementation; 899 900 Actions.CodeCompleteOrdinaryName(getCurScope(), CCC); 901 ConsumeCodeCompletionToken(); 902 return; 903 } 904 905 case tok::coloncolon: // ::foo::bar 906 // C++ scope specifier. Annotate and loop, or bail out on error. 907 if (TryAnnotateCXXScopeToken(true)) { 908 if (!DS.hasTypeSpecifier()) 909 DS.SetTypeSpecError(); 910 goto DoneWithDeclSpec; 911 } 912 if (Tok.is(tok::coloncolon)) // ::new or ::delete 913 goto DoneWithDeclSpec; 914 continue; 915 916 case tok::annot_cxxscope: { 917 if (DS.hasTypeSpecifier()) 918 goto DoneWithDeclSpec; 919 920 CXXScopeSpec SS; 921 SS.setScopeRep((NestedNameSpecifier*) Tok.getAnnotationValue()); 922 SS.setRange(Tok.getAnnotationRange()); 923 924 // We are looking for a qualified typename. 925 Token Next = NextToken(); 926 if (Next.is(tok::annot_template_id) && 927 static_cast<TemplateIdAnnotation *>(Next.getAnnotationValue()) 928 ->Kind == TNK_Type_template) { 929 // We have a qualified template-id, e.g., N::A<int> 930 931 // C++ [class.qual]p2: 932 // In a lookup in which the constructor is an acceptable lookup 933 // result and the nested-name-specifier nominates a class C: 934 // 935 // - if the name specified after the 936 // nested-name-specifier, when looked up in C, is the 937 // injected-class-name of C (Clause 9), or 938 // 939 // - if the name specified after the nested-name-specifier 940 // is the same as the identifier or the 941 // simple-template-id's template-name in the last 942 // component of the nested-name-specifier, 943 // 944 // the name is instead considered to name the constructor of 945 // class C. 946 // 947 // Thus, if the template-name is actually the constructor 948 // name, then the code is ill-formed; this interpretation is 949 // reinforced by the NAD status of core issue 635. 950 TemplateIdAnnotation *TemplateId 951 = static_cast<TemplateIdAnnotation *>(Next.getAnnotationValue()); 952 if ((DSContext == DSC_top_level || 953 (DSContext == DSC_class && DS.isFriendSpecified())) && 954 TemplateId->Name && 955 Actions.isCurrentClassName(*TemplateId->Name, getCurScope(), &SS)) { 956 if (isConstructorDeclarator()) { 957 // The user meant this to be an out-of-line constructor 958 // definition, but template arguments are not allowed 959 // there. Just allow this as a constructor; we'll 960 // complain about it later. 961 goto DoneWithDeclSpec; 962 } 963 964 // The user meant this to name a type, but it actually names 965 // a constructor with some extraneous template 966 // arguments. Complain, then parse it as a type as the user 967 // intended. 968 Diag(TemplateId->TemplateNameLoc, 969 diag::err_out_of_line_template_id_names_constructor) 970 << TemplateId->Name; 971 } 972 973 DS.getTypeSpecScope() = SS; 974 ConsumeToken(); // The C++ scope. 975 assert(Tok.is(tok::annot_template_id) && 976 "ParseOptionalCXXScopeSpecifier not working"); 977 AnnotateTemplateIdTokenAsType(&SS); 978 continue; 979 } 980 981 if (Next.is(tok::annot_typename)) { 982 DS.getTypeSpecScope() = SS; 983 ConsumeToken(); // The C++ scope. 984 if (Tok.getAnnotationValue()) 985 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_typename, Loc, 986 PrevSpec, DiagID, 987 Tok.getAnnotationValue()); 988 else 989 DS.SetTypeSpecError(); 990 DS.SetRangeEnd(Tok.getAnnotationEndLoc()); 991 ConsumeToken(); // The typename 992 } 993 994 if (Next.isNot(tok::identifier)) 995 goto DoneWithDeclSpec; 996 997 // If we're in a context where the identifier could be a class name, 998 // check whether this is a constructor declaration. 999 if ((DSContext == DSC_top_level || 1000 (DSContext == DSC_class && DS.isFriendSpecified())) && 1001 Actions.isCurrentClassName(*Next.getIdentifierInfo(), getCurScope(), 1002 &SS)) { 1003 if (isConstructorDeclarator()) 1004 goto DoneWithDeclSpec; 1005 1006 // As noted in C++ [class.qual]p2 (cited above), when the name 1007 // of the class is qualified in a context where it could name 1008 // a constructor, its a constructor name. However, we've 1009 // looked at the declarator, and the user probably meant this 1010 // to be a type. Complain that it isn't supposed to be treated 1011 // as a type, then proceed to parse it as a type. 1012 Diag(Next.getLocation(), diag::err_out_of_line_type_names_constructor) 1013 << Next.getIdentifierInfo(); 1014 } 1015 1016 TypeTy *TypeRep = Actions.getTypeName(*Next.getIdentifierInfo(), 1017 Next.getLocation(), getCurScope(), &SS); 1018 1019 // If the referenced identifier is not a type, then this declspec is 1020 // erroneous: We already checked about that it has no type specifier, and 1021 // C++ doesn't have implicit int. Diagnose it as a typo w.r.t. to the 1022 // typename. 1023 if (TypeRep == 0) { 1024 ConsumeToken(); // Eat the scope spec so the identifier is current. 1025 if (ParseImplicitInt(DS, &SS, TemplateInfo, AS)) continue; 1026 goto DoneWithDeclSpec; 1027 } 1028 1029 DS.getTypeSpecScope() = SS; 1030 ConsumeToken(); // The C++ scope. 1031 1032 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_typename, Loc, PrevSpec, 1033 DiagID, TypeRep); 1034 if (isInvalid) 1035 break; 1036 1037 DS.SetRangeEnd(Tok.getLocation()); 1038 ConsumeToken(); // The typename. 1039 1040 continue; 1041 } 1042 1043 case tok::annot_typename: { 1044 if (Tok.getAnnotationValue()) 1045 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_typename, Loc, PrevSpec, 1046 DiagID, Tok.getAnnotationValue()); 1047 else 1048 DS.SetTypeSpecError(); 1049 1050 if (isInvalid) 1051 break; 1052 1053 DS.SetRangeEnd(Tok.getAnnotationEndLoc()); 1054 ConsumeToken(); // The typename 1055 1056 // Objective-C supports syntax of the form 'id<proto1,proto2>' where 'id' 1057 // is a specific typedef and 'itf<proto1,proto2>' where 'itf' is an 1058 // Objective-C interface. If we don't have Objective-C or a '<', this is 1059 // just a normal reference to a typedef name. 1060 if (!Tok.is(tok::less) || !getLang().ObjC1) 1061 continue; 1062 1063 SourceLocation LAngleLoc, EndProtoLoc; 1064 llvm::SmallVector<Decl *, 8> ProtocolDecl; 1065 llvm::SmallVector<SourceLocation, 8> ProtocolLocs; 1066 ParseObjCProtocolReferences(ProtocolDecl, ProtocolLocs, false, 1067 LAngleLoc, EndProtoLoc); 1068 DS.setProtocolQualifiers(ProtocolDecl.data(), ProtocolDecl.size(), 1069 ProtocolLocs.data(), LAngleLoc); 1070 1071 DS.SetRangeEnd(EndProtoLoc); 1072 continue; 1073 } 1074 1075 // typedef-name 1076 case tok::identifier: { 1077 // In C++, check to see if this is a scope specifier like foo::bar::, if 1078 // so handle it as such. This is important for ctor parsing. 1079 if (getLang().CPlusPlus) { 1080 if (TryAnnotateCXXScopeToken(true)) { 1081 if (!DS.hasTypeSpecifier()) 1082 DS.SetTypeSpecError(); 1083 goto DoneWithDeclSpec; 1084 } 1085 if (!Tok.is(tok::identifier)) 1086 continue; 1087 } 1088 1089 // This identifier can only be a typedef name if we haven't already seen 1090 // a type-specifier. Without this check we misparse: 1091 // typedef int X; struct Y { short X; }; as 'short int'. 1092 if (DS.hasTypeSpecifier()) 1093 goto DoneWithDeclSpec; 1094 1095 // Check for need to substitute AltiVec keyword tokens. 1096 if (TryAltiVecToken(DS, Loc, PrevSpec, DiagID, isInvalid)) 1097 break; 1098 1099 // It has to be available as a typedef too! 1100 TypeTy *TypeRep = Actions.getTypeName(*Tok.getIdentifierInfo(), 1101 Tok.getLocation(), getCurScope()); 1102 1103 // If this is not a typedef name, don't parse it as part of the declspec, 1104 // it must be an implicit int or an error. 1105 if (TypeRep == 0) { 1106 if (ParseImplicitInt(DS, 0, TemplateInfo, AS)) continue; 1107 goto DoneWithDeclSpec; 1108 } 1109 1110 // If we're in a context where the identifier could be a class name, 1111 // check whether this is a constructor declaration. 1112 if (getLang().CPlusPlus && DSContext == DSC_class && 1113 Actions.isCurrentClassName(*Tok.getIdentifierInfo(), getCurScope()) && 1114 isConstructorDeclarator()) 1115 goto DoneWithDeclSpec; 1116 1117 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_typename, Loc, PrevSpec, 1118 DiagID, TypeRep); 1119 if (isInvalid) 1120 break; 1121 1122 DS.SetRangeEnd(Tok.getLocation()); 1123 ConsumeToken(); // The identifier 1124 1125 // Objective-C supports syntax of the form 'id<proto1,proto2>' where 'id' 1126 // is a specific typedef and 'itf<proto1,proto2>' where 'itf' is an 1127 // Objective-C interface. If we don't have Objective-C or a '<', this is 1128 // just a normal reference to a typedef name. 1129 if (!Tok.is(tok::less) || !getLang().ObjC1) 1130 continue; 1131 1132 SourceLocation LAngleLoc, EndProtoLoc; 1133 llvm::SmallVector<Decl *, 8> ProtocolDecl; 1134 llvm::SmallVector<SourceLocation, 8> ProtocolLocs; 1135 ParseObjCProtocolReferences(ProtocolDecl, ProtocolLocs, false, 1136 LAngleLoc, EndProtoLoc); 1137 DS.setProtocolQualifiers(ProtocolDecl.data(), ProtocolDecl.size(), 1138 ProtocolLocs.data(), LAngleLoc); 1139 1140 DS.SetRangeEnd(EndProtoLoc); 1141 1142 // Need to support trailing type qualifiers (e.g. "id<p> const"). 1143 // If a type specifier follows, it will be diagnosed elsewhere. 1144 continue; 1145 } 1146 1147 // type-name 1148 case tok::annot_template_id: { 1149 TemplateIdAnnotation *TemplateId 1150 = static_cast<TemplateIdAnnotation *>(Tok.getAnnotationValue()); 1151 if (TemplateId->Kind != TNK_Type_template) { 1152 // This template-id does not refer to a type name, so we're 1153 // done with the type-specifiers. 1154 goto DoneWithDeclSpec; 1155 } 1156 1157 // If we're in a context where the template-id could be a 1158 // constructor name or specialization, check whether this is a 1159 // constructor declaration. 1160 if (getLang().CPlusPlus && DSContext == DSC_class && 1161 Actions.isCurrentClassName(*TemplateId->Name, getCurScope()) && 1162 isConstructorDeclarator()) 1163 goto DoneWithDeclSpec; 1164 1165 // Turn the template-id annotation token into a type annotation 1166 // token, then try again to parse it as a type-specifier. 1167 AnnotateTemplateIdTokenAsType(); 1168 continue; 1169 } 1170 1171 // GNU attributes support. 1172 case tok::kw___attribute: 1173 DS.AddAttributes(ParseGNUAttributes()); 1174 continue; 1175 1176 // Microsoft declspec support. 1177 case tok::kw___declspec: 1178 DS.AddAttributes(ParseMicrosoftDeclSpec()); 1179 continue; 1180 1181 // Microsoft single token adornments. 1182 case tok::kw___forceinline: 1183 // FIXME: Add handling here! 1184 break; 1185 1186 case tok::kw___ptr64: 1187 case tok::kw___w64: 1188 case tok::kw___cdecl: 1189 case tok::kw___stdcall: 1190 case tok::kw___fastcall: 1191 case tok::kw___thiscall: 1192 DS.AddAttributes(ParseMicrosoftTypeAttributes()); 1193 continue; 1194 1195 // storage-class-specifier 1196 case tok::kw_typedef: 1197 isInvalid = DS.SetStorageClassSpec(DeclSpec::SCS_typedef, Loc, PrevSpec, 1198 DiagID); 1199 break; 1200 case tok::kw_extern: 1201 if (DS.isThreadSpecified()) 1202 Diag(Tok, diag::ext_thread_before) << "extern"; 1203 isInvalid = DS.SetStorageClassSpec(DeclSpec::SCS_extern, Loc, PrevSpec, 1204 DiagID); 1205 break; 1206 case tok::kw___private_extern__: 1207 isInvalid = DS.SetStorageClassSpec(DeclSpec::SCS_private_extern, Loc, 1208 PrevSpec, DiagID); 1209 break; 1210 case tok::kw_static: 1211 if (DS.isThreadSpecified()) 1212 Diag(Tok, diag::ext_thread_before) << "static"; 1213 isInvalid = DS.SetStorageClassSpec(DeclSpec::SCS_static, Loc, PrevSpec, 1214 DiagID); 1215 break; 1216 case tok::kw_auto: 1217 if (getLang().CPlusPlus0x) 1218 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_auto, Loc, PrevSpec, 1219 DiagID); 1220 else 1221 isInvalid = DS.SetStorageClassSpec(DeclSpec::SCS_auto, Loc, PrevSpec, 1222 DiagID); 1223 break; 1224 case tok::kw_register: 1225 isInvalid = DS.SetStorageClassSpec(DeclSpec::SCS_register, Loc, PrevSpec, 1226 DiagID); 1227 break; 1228 case tok::kw_mutable: 1229 isInvalid = DS.SetStorageClassSpec(DeclSpec::SCS_mutable, Loc, PrevSpec, 1230 DiagID); 1231 break; 1232 case tok::kw___thread: 1233 isInvalid = DS.SetStorageClassSpecThread(Loc, PrevSpec, DiagID); 1234 break; 1235 1236 // function-specifier 1237 case tok::kw_inline: 1238 isInvalid = DS.SetFunctionSpecInline(Loc, PrevSpec, DiagID); 1239 break; 1240 case tok::kw_virtual: 1241 isInvalid = DS.SetFunctionSpecVirtual(Loc, PrevSpec, DiagID); 1242 break; 1243 case tok::kw_explicit: 1244 isInvalid = DS.SetFunctionSpecExplicit(Loc, PrevSpec, DiagID); 1245 break; 1246 1247 // friend 1248 case tok::kw_friend: 1249 if (DSContext == DSC_class) 1250 isInvalid = DS.SetFriendSpec(Loc, PrevSpec, DiagID); 1251 else { 1252 PrevSpec = ""; // not actually used by the diagnostic 1253 DiagID = diag::err_friend_invalid_in_context; 1254 isInvalid = true; 1255 } 1256 break; 1257 1258 // constexpr 1259 case tok::kw_constexpr: 1260 isInvalid = DS.SetConstexprSpec(Loc, PrevSpec, DiagID); 1261 break; 1262 1263 // type-specifier 1264 case tok::kw_short: 1265 isInvalid = DS.SetTypeSpecWidth(DeclSpec::TSW_short, Loc, PrevSpec, 1266 DiagID); 1267 break; 1268 case tok::kw_long: 1269 if (DS.getTypeSpecWidth() != DeclSpec::TSW_long) 1270 isInvalid = DS.SetTypeSpecWidth(DeclSpec::TSW_long, Loc, PrevSpec, 1271 DiagID); 1272 else 1273 isInvalid = DS.SetTypeSpecWidth(DeclSpec::TSW_longlong, Loc, PrevSpec, 1274 DiagID); 1275 break; 1276 case tok::kw_signed: 1277 isInvalid = DS.SetTypeSpecSign(DeclSpec::TSS_signed, Loc, PrevSpec, 1278 DiagID); 1279 break; 1280 case tok::kw_unsigned: 1281 isInvalid = DS.SetTypeSpecSign(DeclSpec::TSS_unsigned, Loc, PrevSpec, 1282 DiagID); 1283 break; 1284 case tok::kw__Complex: 1285 isInvalid = DS.SetTypeSpecComplex(DeclSpec::TSC_complex, Loc, PrevSpec, 1286 DiagID); 1287 break; 1288 case tok::kw__Imaginary: 1289 isInvalid = DS.SetTypeSpecComplex(DeclSpec::TSC_imaginary, Loc, PrevSpec, 1290 DiagID); 1291 break; 1292 case tok::kw_void: 1293 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_void, Loc, PrevSpec, 1294 DiagID); 1295 break; 1296 case tok::kw_char: 1297 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_char, Loc, PrevSpec, 1298 DiagID); 1299 break; 1300 case tok::kw_int: 1301 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_int, Loc, PrevSpec, 1302 DiagID); 1303 break; 1304 case tok::kw_float: 1305 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_float, Loc, PrevSpec, 1306 DiagID); 1307 break; 1308 case tok::kw_double: 1309 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_double, Loc, PrevSpec, 1310 DiagID); 1311 break; 1312 case tok::kw_wchar_t: 1313 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_wchar, Loc, PrevSpec, 1314 DiagID); 1315 break; 1316 case tok::kw_char16_t: 1317 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_char16, Loc, PrevSpec, 1318 DiagID); 1319 break; 1320 case tok::kw_char32_t: 1321 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_char32, Loc, PrevSpec, 1322 DiagID); 1323 break; 1324 case tok::kw_bool: 1325 case tok::kw__Bool: 1326 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_bool, Loc, PrevSpec, 1327 DiagID); 1328 break; 1329 case tok::kw__Decimal32: 1330 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_decimal32, Loc, PrevSpec, 1331 DiagID); 1332 break; 1333 case tok::kw__Decimal64: 1334 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_decimal64, Loc, PrevSpec, 1335 DiagID); 1336 break; 1337 case tok::kw__Decimal128: 1338 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_decimal128, Loc, PrevSpec, 1339 DiagID); 1340 break; 1341 case tok::kw___vector: 1342 isInvalid = DS.SetTypeAltiVecVector(true, Loc, PrevSpec, DiagID); 1343 break; 1344 case tok::kw___pixel: 1345 isInvalid = DS.SetTypeAltiVecPixel(true, Loc, PrevSpec, DiagID); 1346 break; 1347 1348 // class-specifier: 1349 case tok::kw_class: 1350 case tok::kw_struct: 1351 case tok::kw_union: { 1352 tok::TokenKind Kind = Tok.getKind(); 1353 ConsumeToken(); 1354 ParseClassSpecifier(Kind, Loc, DS, TemplateInfo, AS); 1355 continue; 1356 } 1357 1358 // enum-specifier: 1359 case tok::kw_enum: 1360 ConsumeToken(); 1361 ParseEnumSpecifier(Loc, DS, TemplateInfo, AS); 1362 continue; 1363 1364 // cv-qualifier: 1365 case tok::kw_const: 1366 isInvalid = DS.SetTypeQual(DeclSpec::TQ_const, Loc, PrevSpec, DiagID, 1367 getLang()); 1368 break; 1369 case tok::kw_volatile: 1370 isInvalid = DS.SetTypeQual(DeclSpec::TQ_volatile, Loc, PrevSpec, DiagID, 1371 getLang()); 1372 break; 1373 case tok::kw_restrict: 1374 isInvalid = DS.SetTypeQual(DeclSpec::TQ_restrict, Loc, PrevSpec, DiagID, 1375 getLang()); 1376 break; 1377 1378 // C++ typename-specifier: 1379 case tok::kw_typename: 1380 if (TryAnnotateTypeOrScopeToken()) { 1381 DS.SetTypeSpecError(); 1382 goto DoneWithDeclSpec; 1383 } 1384 if (!Tok.is(tok::kw_typename)) 1385 continue; 1386 break; 1387 1388 // GNU typeof support. 1389 case tok::kw_typeof: 1390 ParseTypeofSpecifier(DS); 1391 continue; 1392 1393 case tok::kw_decltype: 1394 ParseDecltypeSpecifier(DS); 1395 continue; 1396 1397 case tok::less: 1398 // GCC ObjC supports types like "<SomeProtocol>" as a synonym for 1399 // "id<SomeProtocol>". This is hopelessly old fashioned and dangerous, 1400 // but we support it. 1401 if (DS.hasTypeSpecifier() || !getLang().ObjC1) 1402 goto DoneWithDeclSpec; 1403 1404 { 1405 SourceLocation LAngleLoc, EndProtoLoc; 1406 llvm::SmallVector<Decl *, 8> ProtocolDecl; 1407 llvm::SmallVector<SourceLocation, 8> ProtocolLocs; 1408 ParseObjCProtocolReferences(ProtocolDecl, ProtocolLocs, false, 1409 LAngleLoc, EndProtoLoc); 1410 DS.setProtocolQualifiers(ProtocolDecl.data(), ProtocolDecl.size(), 1411 ProtocolLocs.data(), LAngleLoc); 1412 DS.SetRangeEnd(EndProtoLoc); 1413 1414 Diag(Loc, diag::warn_objc_protocol_qualifier_missing_id) 1415 << FixItHint::CreateInsertion(Loc, "id") 1416 << SourceRange(Loc, EndProtoLoc); 1417 // Need to support trailing type qualifiers (e.g. "id<p> const"). 1418 // If a type specifier follows, it will be diagnosed elsewhere. 1419 continue; 1420 } 1421 } 1422 // If the specifier wasn't legal, issue a diagnostic. 1423 if (isInvalid) { 1424 assert(PrevSpec && "Method did not return previous specifier!"); 1425 assert(DiagID); 1426 1427 if (DiagID == diag::ext_duplicate_declspec) 1428 Diag(Tok, DiagID) 1429 << PrevSpec << FixItHint::CreateRemoval(Tok.getLocation()); 1430 else 1431 Diag(Tok, DiagID) << PrevSpec; 1432 } 1433 DS.SetRangeEnd(Tok.getLocation()); 1434 ConsumeToken(); 1435 } 1436} 1437 1438/// ParseOptionalTypeSpecifier - Try to parse a single type-specifier. We 1439/// primarily follow the C++ grammar with additions for C99 and GNU, 1440/// which together subsume the C grammar. Note that the C++ 1441/// type-specifier also includes the C type-qualifier (for const, 1442/// volatile, and C99 restrict). Returns true if a type-specifier was 1443/// found (and parsed), false otherwise. 1444/// 1445/// type-specifier: [C++ 7.1.5] 1446/// simple-type-specifier 1447/// class-specifier 1448/// enum-specifier 1449/// elaborated-type-specifier [TODO] 1450/// cv-qualifier 1451/// 1452/// cv-qualifier: [C++ 7.1.5.1] 1453/// 'const' 1454/// 'volatile' 1455/// [C99] 'restrict' 1456/// 1457/// simple-type-specifier: [ C++ 7.1.5.2] 1458/// '::'[opt] nested-name-specifier[opt] type-name [TODO] 1459/// '::'[opt] nested-name-specifier 'template' template-id [TODO] 1460/// 'char' 1461/// 'wchar_t' 1462/// 'bool' 1463/// 'short' 1464/// 'int' 1465/// 'long' 1466/// 'signed' 1467/// 'unsigned' 1468/// 'float' 1469/// 'double' 1470/// 'void' 1471/// [C99] '_Bool' 1472/// [C99] '_Complex' 1473/// [C99] '_Imaginary' // Removed in TC2? 1474/// [GNU] '_Decimal32' 1475/// [GNU] '_Decimal64' 1476/// [GNU] '_Decimal128' 1477/// [GNU] typeof-specifier 1478/// [OBJC] class-name objc-protocol-refs[opt] [TODO] 1479/// [OBJC] typedef-name objc-protocol-refs[opt] [TODO] 1480/// [C++0x] 'decltype' ( expression ) 1481/// [AltiVec] '__vector' 1482bool Parser::ParseOptionalTypeSpecifier(DeclSpec &DS, bool& isInvalid, 1483 const char *&PrevSpec, 1484 unsigned &DiagID, 1485 const ParsedTemplateInfo &TemplateInfo, 1486 bool SuppressDeclarations) { 1487 SourceLocation Loc = Tok.getLocation(); 1488 1489 switch (Tok.getKind()) { 1490 case tok::identifier: // foo::bar 1491 // If we already have a type specifier, this identifier is not a type. 1492 if (DS.getTypeSpecType() != DeclSpec::TST_unspecified || 1493 DS.getTypeSpecWidth() != DeclSpec::TSW_unspecified || 1494 DS.getTypeSpecSign() != DeclSpec::TSS_unspecified) 1495 return false; 1496 // Check for need to substitute AltiVec keyword tokens. 1497 if (TryAltiVecToken(DS, Loc, PrevSpec, DiagID, isInvalid)) 1498 break; 1499 // Fall through. 1500 case tok::kw_typename: // typename foo::bar 1501 // Annotate typenames and C++ scope specifiers. If we get one, just 1502 // recurse to handle whatever we get. 1503 if (TryAnnotateTypeOrScopeToken()) 1504 return true; 1505 if (Tok.is(tok::identifier)) 1506 return false; 1507 return ParseOptionalTypeSpecifier(DS, isInvalid, PrevSpec, DiagID, 1508 TemplateInfo, SuppressDeclarations); 1509 case tok::coloncolon: // ::foo::bar 1510 if (NextToken().is(tok::kw_new) || // ::new 1511 NextToken().is(tok::kw_delete)) // ::delete 1512 return false; 1513 1514 // Annotate typenames and C++ scope specifiers. If we get one, just 1515 // recurse to handle whatever we get. 1516 if (TryAnnotateTypeOrScopeToken()) 1517 return true; 1518 return ParseOptionalTypeSpecifier(DS, isInvalid, PrevSpec, DiagID, 1519 TemplateInfo, SuppressDeclarations); 1520 1521 // simple-type-specifier: 1522 case tok::annot_typename: { 1523 if (Tok.getAnnotationValue()) 1524 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_typename, Loc, PrevSpec, 1525 DiagID, Tok.getAnnotationValue()); 1526 else 1527 DS.SetTypeSpecError(); 1528 DS.SetRangeEnd(Tok.getAnnotationEndLoc()); 1529 ConsumeToken(); // The typename 1530 1531 // Objective-C supports syntax of the form 'id<proto1,proto2>' where 'id' 1532 // is a specific typedef and 'itf<proto1,proto2>' where 'itf' is an 1533 // Objective-C interface. If we don't have Objective-C or a '<', this is 1534 // just a normal reference to a typedef name. 1535 if (!Tok.is(tok::less) || !getLang().ObjC1) 1536 return true; 1537 1538 SourceLocation LAngleLoc, EndProtoLoc; 1539 llvm::SmallVector<Decl *, 8> ProtocolDecl; 1540 llvm::SmallVector<SourceLocation, 8> ProtocolLocs; 1541 ParseObjCProtocolReferences(ProtocolDecl, ProtocolLocs, false, 1542 LAngleLoc, EndProtoLoc); 1543 DS.setProtocolQualifiers(ProtocolDecl.data(), ProtocolDecl.size(), 1544 ProtocolLocs.data(), LAngleLoc); 1545 1546 DS.SetRangeEnd(EndProtoLoc); 1547 return true; 1548 } 1549 1550 case tok::kw_short: 1551 isInvalid = DS.SetTypeSpecWidth(DeclSpec::TSW_short, Loc, PrevSpec, DiagID); 1552 break; 1553 case tok::kw_long: 1554 if (DS.getTypeSpecWidth() != DeclSpec::TSW_long) 1555 isInvalid = DS.SetTypeSpecWidth(DeclSpec::TSW_long, Loc, PrevSpec, 1556 DiagID); 1557 else 1558 isInvalid = DS.SetTypeSpecWidth(DeclSpec::TSW_longlong, Loc, PrevSpec, 1559 DiagID); 1560 break; 1561 case tok::kw_signed: 1562 isInvalid = DS.SetTypeSpecSign(DeclSpec::TSS_signed, Loc, PrevSpec, DiagID); 1563 break; 1564 case tok::kw_unsigned: 1565 isInvalid = DS.SetTypeSpecSign(DeclSpec::TSS_unsigned, Loc, PrevSpec, 1566 DiagID); 1567 break; 1568 case tok::kw__Complex: 1569 isInvalid = DS.SetTypeSpecComplex(DeclSpec::TSC_complex, Loc, PrevSpec, 1570 DiagID); 1571 break; 1572 case tok::kw__Imaginary: 1573 isInvalid = DS.SetTypeSpecComplex(DeclSpec::TSC_imaginary, Loc, PrevSpec, 1574 DiagID); 1575 break; 1576 case tok::kw_void: 1577 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_void, Loc, PrevSpec, DiagID); 1578 break; 1579 case tok::kw_char: 1580 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_char, Loc, PrevSpec, DiagID); 1581 break; 1582 case tok::kw_int: 1583 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_int, Loc, PrevSpec, DiagID); 1584 break; 1585 case tok::kw_float: 1586 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_float, Loc, PrevSpec, DiagID); 1587 break; 1588 case tok::kw_double: 1589 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_double, Loc, PrevSpec, DiagID); 1590 break; 1591 case tok::kw_wchar_t: 1592 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_wchar, Loc, PrevSpec, DiagID); 1593 break; 1594 case tok::kw_char16_t: 1595 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_char16, Loc, PrevSpec, DiagID); 1596 break; 1597 case tok::kw_char32_t: 1598 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_char32, Loc, PrevSpec, DiagID); 1599 break; 1600 case tok::kw_bool: 1601 case tok::kw__Bool: 1602 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_bool, Loc, PrevSpec, DiagID); 1603 break; 1604 case tok::kw__Decimal32: 1605 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_decimal32, Loc, PrevSpec, 1606 DiagID); 1607 break; 1608 case tok::kw__Decimal64: 1609 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_decimal64, Loc, PrevSpec, 1610 DiagID); 1611 break; 1612 case tok::kw__Decimal128: 1613 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_decimal128, Loc, PrevSpec, 1614 DiagID); 1615 break; 1616 case tok::kw___vector: 1617 isInvalid = DS.SetTypeAltiVecVector(true, Loc, PrevSpec, DiagID); 1618 break; 1619 case tok::kw___pixel: 1620 isInvalid = DS.SetTypeAltiVecPixel(true, Loc, PrevSpec, DiagID); 1621 break; 1622 1623 // class-specifier: 1624 case tok::kw_class: 1625 case tok::kw_struct: 1626 case tok::kw_union: { 1627 tok::TokenKind Kind = Tok.getKind(); 1628 ConsumeToken(); 1629 ParseClassSpecifier(Kind, Loc, DS, TemplateInfo, AS_none, 1630 SuppressDeclarations); 1631 return true; 1632 } 1633 1634 // enum-specifier: 1635 case tok::kw_enum: 1636 ConsumeToken(); 1637 ParseEnumSpecifier(Loc, DS, TemplateInfo, AS_none); 1638 return true; 1639 1640 // cv-qualifier: 1641 case tok::kw_const: 1642 isInvalid = DS.SetTypeQual(DeclSpec::TQ_const , Loc, PrevSpec, 1643 DiagID, getLang()); 1644 break; 1645 case tok::kw_volatile: 1646 isInvalid = DS.SetTypeQual(DeclSpec::TQ_volatile, Loc, PrevSpec, 1647 DiagID, getLang()); 1648 break; 1649 case tok::kw_restrict: 1650 isInvalid = DS.SetTypeQual(DeclSpec::TQ_restrict, Loc, PrevSpec, 1651 DiagID, getLang()); 1652 break; 1653 1654 // GNU typeof support. 1655 case tok::kw_typeof: 1656 ParseTypeofSpecifier(DS); 1657 return true; 1658 1659 // C++0x decltype support. 1660 case tok::kw_decltype: 1661 ParseDecltypeSpecifier(DS); 1662 return true; 1663 1664 // C++0x auto support. 1665 case tok::kw_auto: 1666 if (!getLang().CPlusPlus0x) 1667 return false; 1668 1669 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_auto, Loc, PrevSpec, DiagID); 1670 break; 1671 case tok::kw___ptr64: 1672 case tok::kw___w64: 1673 case tok::kw___cdecl: 1674 case tok::kw___stdcall: 1675 case tok::kw___fastcall: 1676 case tok::kw___thiscall: 1677 DS.AddAttributes(ParseMicrosoftTypeAttributes()); 1678 return true; 1679 1680 default: 1681 // Not a type-specifier; do nothing. 1682 return false; 1683 } 1684 1685 // If the specifier combination wasn't legal, issue a diagnostic. 1686 if (isInvalid) { 1687 assert(PrevSpec && "Method did not return previous specifier!"); 1688 // Pick between error or extwarn. 1689 Diag(Tok, DiagID) << PrevSpec; 1690 } 1691 DS.SetRangeEnd(Tok.getLocation()); 1692 ConsumeToken(); // whatever we parsed above. 1693 return true; 1694} 1695 1696/// ParseStructDeclaration - Parse a struct declaration without the terminating 1697/// semicolon. 1698/// 1699/// struct-declaration: 1700/// specifier-qualifier-list struct-declarator-list 1701/// [GNU] __extension__ struct-declaration 1702/// [GNU] specifier-qualifier-list 1703/// struct-declarator-list: 1704/// struct-declarator 1705/// struct-declarator-list ',' struct-declarator 1706/// [GNU] struct-declarator-list ',' attributes[opt] struct-declarator 1707/// struct-declarator: 1708/// declarator 1709/// [GNU] declarator attributes[opt] 1710/// declarator[opt] ':' constant-expression 1711/// [GNU] declarator[opt] ':' constant-expression attributes[opt] 1712/// 1713void Parser:: 1714ParseStructDeclaration(DeclSpec &DS, FieldCallback &Fields) { 1715 if (Tok.is(tok::kw___extension__)) { 1716 // __extension__ silences extension warnings in the subexpression. 1717 ExtensionRAIIObject O(Diags); // Use RAII to do this. 1718 ConsumeToken(); 1719 return ParseStructDeclaration(DS, Fields); 1720 } 1721 1722 // Parse the common specifier-qualifiers-list piece. 1723 SourceLocation DSStart = Tok.getLocation(); 1724 ParseSpecifierQualifierList(DS); 1725 1726 // If there are no declarators, this is a free-standing declaration 1727 // specifier. Let the actions module cope with it. 1728 if (Tok.is(tok::semi)) { 1729 Actions.ParsedFreeStandingDeclSpec(getCurScope(), AS_none, DS); 1730 return; 1731 } 1732 1733 // Read struct-declarators until we find the semicolon. 1734 bool FirstDeclarator = true; 1735 while (1) { 1736 ParsingDeclRAIIObject PD(*this); 1737 FieldDeclarator DeclaratorInfo(DS); 1738 1739 // Attributes are only allowed here on successive declarators. 1740 if (!FirstDeclarator && Tok.is(tok::kw___attribute)) { 1741 SourceLocation Loc; 1742 AttributeList *AttrList = ParseGNUAttributes(&Loc); 1743 DeclaratorInfo.D.AddAttributes(AttrList, Loc); 1744 } 1745 1746 /// struct-declarator: declarator 1747 /// struct-declarator: declarator[opt] ':' constant-expression 1748 if (Tok.isNot(tok::colon)) { 1749 // Don't parse FOO:BAR as if it were a typo for FOO::BAR. 1750 ColonProtectionRAIIObject X(*this); 1751 ParseDeclarator(DeclaratorInfo.D); 1752 } 1753 1754 if (Tok.is(tok::colon)) { 1755 ConsumeToken(); 1756 OwningExprResult Res(ParseConstantExpression()); 1757 if (Res.isInvalid()) 1758 SkipUntil(tok::semi, true, true); 1759 else 1760 DeclaratorInfo.BitfieldSize = Res.release(); 1761 } 1762 1763 // If attributes exist after the declarator, parse them. 1764 if (Tok.is(tok::kw___attribute)) { 1765 SourceLocation Loc; 1766 AttributeList *AttrList = ParseGNUAttributes(&Loc); 1767 DeclaratorInfo.D.AddAttributes(AttrList, Loc); 1768 } 1769 1770 // We're done with this declarator; invoke the callback. 1771 Decl *D = Fields.invoke(DeclaratorInfo); 1772 PD.complete(D); 1773 1774 // If we don't have a comma, it is either the end of the list (a ';') 1775 // or an error, bail out. 1776 if (Tok.isNot(tok::comma)) 1777 return; 1778 1779 // Consume the comma. 1780 ConsumeToken(); 1781 1782 FirstDeclarator = false; 1783 } 1784} 1785 1786/// ParseStructUnionBody 1787/// struct-contents: 1788/// struct-declaration-list 1789/// [EXT] empty 1790/// [GNU] "struct-declaration-list" without terminatoring ';' 1791/// struct-declaration-list: 1792/// struct-declaration 1793/// struct-declaration-list struct-declaration 1794/// [OBC] '@' 'defs' '(' class-name ')' 1795/// 1796void Parser::ParseStructUnionBody(SourceLocation RecordLoc, 1797 unsigned TagType, Decl *TagDecl) { 1798 PrettyStackTraceActionsDecl CrashInfo(TagDecl, RecordLoc, Actions, 1799 PP.getSourceManager(), 1800 "parsing struct/union body"); 1801 1802 SourceLocation LBraceLoc = ConsumeBrace(); 1803 1804 ParseScope StructScope(this, Scope::ClassScope|Scope::DeclScope); 1805 Actions.ActOnTagStartDefinition(getCurScope(), TagDecl); 1806 1807 // Empty structs are an extension in C (C99 6.7.2.1p7), but are allowed in 1808 // C++. 1809 if (Tok.is(tok::r_brace) && !getLang().CPlusPlus) 1810 Diag(Tok, diag::ext_empty_struct_union) 1811 << (TagType == TST_union); 1812 1813 llvm::SmallVector<Decl *, 32> FieldDecls; 1814 1815 // While we still have something to read, read the declarations in the struct. 1816 while (Tok.isNot(tok::r_brace) && Tok.isNot(tok::eof)) { 1817 // Each iteration of this loop reads one struct-declaration. 1818 1819 // Check for extraneous top-level semicolon. 1820 if (Tok.is(tok::semi)) { 1821 Diag(Tok, diag::ext_extra_struct_semi) 1822 << DeclSpec::getSpecifierName((DeclSpec::TST)TagType) 1823 << FixItHint::CreateRemoval(Tok.getLocation()); 1824 ConsumeToken(); 1825 continue; 1826 } 1827 1828 // Parse all the comma separated declarators. 1829 DeclSpec DS; 1830 1831 if (!Tok.is(tok::at)) { 1832 struct CFieldCallback : FieldCallback { 1833 Parser &P; 1834 Decl *TagDecl; 1835 llvm::SmallVectorImpl<Decl *> &FieldDecls; 1836 1837 CFieldCallback(Parser &P, Decl *TagDecl, 1838 llvm::SmallVectorImpl<Decl *> &FieldDecls) : 1839 P(P), TagDecl(TagDecl), FieldDecls(FieldDecls) {} 1840 1841 virtual Decl *invoke(FieldDeclarator &FD) { 1842 // Install the declarator into the current TagDecl. 1843 Decl *Field = P.Actions.ActOnField(P.getCurScope(), TagDecl, 1844 FD.D.getDeclSpec().getSourceRange().getBegin(), 1845 FD.D, FD.BitfieldSize); 1846 FieldDecls.push_back(Field); 1847 return Field; 1848 } 1849 } Callback(*this, TagDecl, FieldDecls); 1850 1851 ParseStructDeclaration(DS, Callback); 1852 } else { // Handle @defs 1853 ConsumeToken(); 1854 if (!Tok.isObjCAtKeyword(tok::objc_defs)) { 1855 Diag(Tok, diag::err_unexpected_at); 1856 SkipUntil(tok::semi, true); 1857 continue; 1858 } 1859 ConsumeToken(); 1860 ExpectAndConsume(tok::l_paren, diag::err_expected_lparen); 1861 if (!Tok.is(tok::identifier)) { 1862 Diag(Tok, diag::err_expected_ident); 1863 SkipUntil(tok::semi, true); 1864 continue; 1865 } 1866 llvm::SmallVector<Decl *, 16> Fields; 1867 Actions.ActOnDefs(getCurScope(), TagDecl, Tok.getLocation(), 1868 Tok.getIdentifierInfo(), Fields); 1869 FieldDecls.insert(FieldDecls.end(), Fields.begin(), Fields.end()); 1870 ConsumeToken(); 1871 ExpectAndConsume(tok::r_paren, diag::err_expected_rparen); 1872 } 1873 1874 if (Tok.is(tok::semi)) { 1875 ConsumeToken(); 1876 } else if (Tok.is(tok::r_brace)) { 1877 ExpectAndConsume(tok::semi, diag::ext_expected_semi_decl_list); 1878 break; 1879 } else { 1880 ExpectAndConsume(tok::semi, diag::err_expected_semi_decl_list); 1881 // Skip to end of block or statement to avoid ext-warning on extra ';'. 1882 SkipUntil(tok::r_brace, true, true); 1883 // If we stopped at a ';', eat it. 1884 if (Tok.is(tok::semi)) ConsumeToken(); 1885 } 1886 } 1887 1888 SourceLocation RBraceLoc = MatchRHSPunctuation(tok::r_brace, LBraceLoc); 1889 1890 llvm::OwningPtr<AttributeList> AttrList; 1891 // If attributes exist after struct contents, parse them. 1892 if (Tok.is(tok::kw___attribute)) 1893 AttrList.reset(ParseGNUAttributes()); 1894 1895 Actions.ActOnFields(getCurScope(), 1896 RecordLoc, TagDecl, FieldDecls.data(), FieldDecls.size(), 1897 LBraceLoc, RBraceLoc, 1898 AttrList.get()); 1899 StructScope.Exit(); 1900 Actions.ActOnTagFinishDefinition(getCurScope(), TagDecl, RBraceLoc); 1901} 1902 1903 1904/// ParseEnumSpecifier 1905/// enum-specifier: [C99 6.7.2.2] 1906/// 'enum' identifier[opt] '{' enumerator-list '}' 1907///[C99/C++]'enum' identifier[opt] '{' enumerator-list ',' '}' 1908/// [GNU] 'enum' attributes[opt] identifier[opt] '{' enumerator-list ',' [opt] 1909/// '}' attributes[opt] 1910/// 'enum' identifier 1911/// [GNU] 'enum' attributes[opt] identifier 1912/// 1913/// [C++] elaborated-type-specifier: 1914/// [C++] 'enum' '::'[opt] nested-name-specifier[opt] identifier 1915/// 1916void Parser::ParseEnumSpecifier(SourceLocation StartLoc, DeclSpec &DS, 1917 const ParsedTemplateInfo &TemplateInfo, 1918 AccessSpecifier AS) { 1919 // Parse the tag portion of this. 1920 if (Tok.is(tok::code_completion)) { 1921 // Code completion for an enum name. 1922 Actions.CodeCompleteTag(getCurScope(), DeclSpec::TST_enum); 1923 ConsumeCodeCompletionToken(); 1924 } 1925 1926 llvm::OwningPtr<AttributeList> Attr; 1927 // If attributes exist after tag, parse them. 1928 if (Tok.is(tok::kw___attribute)) 1929 Attr.reset(ParseGNUAttributes()); 1930 1931 CXXScopeSpec &SS = DS.getTypeSpecScope(); 1932 if (getLang().CPlusPlus) { 1933 if (ParseOptionalCXXScopeSpecifier(SS, 0, false)) 1934 return; 1935 1936 if (SS.isSet() && Tok.isNot(tok::identifier)) { 1937 Diag(Tok, diag::err_expected_ident); 1938 if (Tok.isNot(tok::l_brace)) { 1939 // Has no name and is not a definition. 1940 // Skip the rest of this declarator, up until the comma or semicolon. 1941 SkipUntil(tok::comma, true); 1942 return; 1943 } 1944 } 1945 } 1946 1947 // Must have either 'enum name' or 'enum {...}'. 1948 if (Tok.isNot(tok::identifier) && Tok.isNot(tok::l_brace)) { 1949 Diag(Tok, diag::err_expected_ident_lbrace); 1950 1951 // Skip the rest of this declarator, up until the comma or semicolon. 1952 SkipUntil(tok::comma, true); 1953 return; 1954 } 1955 1956 // If an identifier is present, consume and remember it. 1957 IdentifierInfo *Name = 0; 1958 SourceLocation NameLoc; 1959 if (Tok.is(tok::identifier)) { 1960 Name = Tok.getIdentifierInfo(); 1961 NameLoc = ConsumeToken(); 1962 } 1963 1964 // There are three options here. If we have 'enum foo;', then this is a 1965 // forward declaration. If we have 'enum foo {...' then this is a 1966 // definition. Otherwise we have something like 'enum foo xyz', a reference. 1967 // 1968 // This is needed to handle stuff like this right (C99 6.7.2.3p11): 1969 // enum foo {..}; void bar() { enum foo; } <- new foo in bar. 1970 // enum foo {..}; void bar() { enum foo x; } <- use of old foo. 1971 // 1972 Action::TagUseKind TUK; 1973 if (Tok.is(tok::l_brace)) 1974 TUK = Action::TUK_Definition; 1975 else if (Tok.is(tok::semi)) 1976 TUK = Action::TUK_Declaration; 1977 else 1978 TUK = Action::TUK_Reference; 1979 1980 // enums cannot be templates, although they can be referenced from a 1981 // template. 1982 if (TemplateInfo.Kind != ParsedTemplateInfo::NonTemplate && 1983 TUK != Action::TUK_Reference) { 1984 Diag(Tok, diag::err_enum_template); 1985 1986 // Skip the rest of this declarator, up until the comma or semicolon. 1987 SkipUntil(tok::comma, true); 1988 return; 1989 } 1990 1991 bool Owned = false; 1992 bool IsDependent = false; 1993 SourceLocation TSTLoc = NameLoc.isValid()? NameLoc : StartLoc; 1994 const char *PrevSpec = 0; 1995 unsigned DiagID; 1996 Decl *TagDecl = Actions.ActOnTag(getCurScope(), DeclSpec::TST_enum, TUK, 1997 StartLoc, SS, Name, NameLoc, Attr.get(), 1998 AS, 1999 Action::MultiTemplateParamsArg(Actions), 2000 Owned, IsDependent); 2001 if (IsDependent) { 2002 // This enum has a dependent nested-name-specifier. Handle it as a 2003 // dependent tag. 2004 if (!Name) { 2005 DS.SetTypeSpecError(); 2006 Diag(Tok, diag::err_expected_type_name_after_typename); 2007 return; 2008 } 2009 2010 TypeResult Type = Actions.ActOnDependentTag(getCurScope(), DeclSpec::TST_enum, 2011 TUK, SS, Name, StartLoc, 2012 NameLoc); 2013 if (Type.isInvalid()) { 2014 DS.SetTypeSpecError(); 2015 return; 2016 } 2017 2018 if (DS.SetTypeSpecType(DeclSpec::TST_typename, TSTLoc, PrevSpec, DiagID, 2019 Type.get(), false)) 2020 Diag(StartLoc, DiagID) << PrevSpec; 2021 2022 return; 2023 } 2024 2025 if (!TagDecl) { 2026 // The action failed to produce an enumeration tag. If this is a 2027 // definition, consume the entire definition. 2028 if (Tok.is(tok::l_brace)) { 2029 ConsumeBrace(); 2030 SkipUntil(tok::r_brace); 2031 } 2032 2033 DS.SetTypeSpecError(); 2034 return; 2035 } 2036 2037 if (Tok.is(tok::l_brace)) 2038 ParseEnumBody(StartLoc, TagDecl); 2039 2040 // FIXME: The DeclSpec should keep the locations of both the keyword and the 2041 // name (if there is one). 2042 if (DS.SetTypeSpecType(DeclSpec::TST_enum, TSTLoc, PrevSpec, DiagID, 2043 TagDecl, Owned)) 2044 Diag(StartLoc, DiagID) << PrevSpec; 2045} 2046 2047/// ParseEnumBody - Parse a {} enclosed enumerator-list. 2048/// enumerator-list: 2049/// enumerator 2050/// enumerator-list ',' enumerator 2051/// enumerator: 2052/// enumeration-constant 2053/// enumeration-constant '=' constant-expression 2054/// enumeration-constant: 2055/// identifier 2056/// 2057void Parser::ParseEnumBody(SourceLocation StartLoc, Decl *EnumDecl) { 2058 // Enter the scope of the enum body and start the definition. 2059 ParseScope EnumScope(this, Scope::DeclScope); 2060 Actions.ActOnTagStartDefinition(getCurScope(), EnumDecl); 2061 2062 SourceLocation LBraceLoc = ConsumeBrace(); 2063 2064 // C does not allow an empty enumerator-list, C++ does [dcl.enum]. 2065 if (Tok.is(tok::r_brace) && !getLang().CPlusPlus) 2066 Diag(Tok, diag::error_empty_enum); 2067 2068 llvm::SmallVector<Decl *, 32> EnumConstantDecls; 2069 2070 Decl *LastEnumConstDecl = 0; 2071 2072 // Parse the enumerator-list. 2073 while (Tok.is(tok::identifier)) { 2074 IdentifierInfo *Ident = Tok.getIdentifierInfo(); 2075 SourceLocation IdentLoc = ConsumeToken(); 2076 2077 SourceLocation EqualLoc; 2078 OwningExprResult AssignedVal; 2079 if (Tok.is(tok::equal)) { 2080 EqualLoc = ConsumeToken(); 2081 AssignedVal = ParseConstantExpression(); 2082 if (AssignedVal.isInvalid()) 2083 SkipUntil(tok::comma, tok::r_brace, true, true); 2084 } 2085 2086 // Install the enumerator constant into EnumDecl. 2087 Decl *EnumConstDecl = Actions.ActOnEnumConstant(getCurScope(), EnumDecl, 2088 LastEnumConstDecl, 2089 IdentLoc, Ident, 2090 EqualLoc, 2091 AssignedVal.release()); 2092 EnumConstantDecls.push_back(EnumConstDecl); 2093 LastEnumConstDecl = EnumConstDecl; 2094 2095 if (Tok.isNot(tok::comma)) 2096 break; 2097 SourceLocation CommaLoc = ConsumeToken(); 2098 2099 if (Tok.isNot(tok::identifier) && 2100 !(getLang().C99 || getLang().CPlusPlus0x)) 2101 Diag(CommaLoc, diag::ext_enumerator_list_comma) 2102 << getLang().CPlusPlus 2103 << FixItHint::CreateRemoval(CommaLoc); 2104 } 2105 2106 // Eat the }. 2107 SourceLocation RBraceLoc = MatchRHSPunctuation(tok::r_brace, LBraceLoc); 2108 2109 llvm::OwningPtr<AttributeList> Attr; 2110 // If attributes exist after the identifier list, parse them. 2111 if (Tok.is(tok::kw___attribute)) 2112 Attr.reset(ParseGNUAttributes()); // FIXME: where do they do? 2113 2114 Actions.ActOnEnumBody(StartLoc, LBraceLoc, RBraceLoc, EnumDecl, 2115 EnumConstantDecls.data(), EnumConstantDecls.size(), 2116 getCurScope(), Attr.get()); 2117 2118 EnumScope.Exit(); 2119 Actions.ActOnTagFinishDefinition(getCurScope(), EnumDecl, RBraceLoc); 2120} 2121 2122/// isTypeSpecifierQualifier - Return true if the current token could be the 2123/// start of a type-qualifier-list. 2124bool Parser::isTypeQualifier() const { 2125 switch (Tok.getKind()) { 2126 default: return false; 2127 // type-qualifier 2128 case tok::kw_const: 2129 case tok::kw_volatile: 2130 case tok::kw_restrict: 2131 return true; 2132 } 2133} 2134 2135/// isKnownToBeTypeSpecifier - Return true if we know that the specified token 2136/// is definitely a type-specifier. Return false if it isn't part of a type 2137/// specifier or if we're not sure. 2138bool Parser::isKnownToBeTypeSpecifier(const Token &Tok) const { 2139 switch (Tok.getKind()) { 2140 default: return false; 2141 // type-specifiers 2142 case tok::kw_short: 2143 case tok::kw_long: 2144 case tok::kw_signed: 2145 case tok::kw_unsigned: 2146 case tok::kw__Complex: 2147 case tok::kw__Imaginary: 2148 case tok::kw_void: 2149 case tok::kw_char: 2150 case tok::kw_wchar_t: 2151 case tok::kw_char16_t: 2152 case tok::kw_char32_t: 2153 case tok::kw_int: 2154 case tok::kw_float: 2155 case tok::kw_double: 2156 case tok::kw_bool: 2157 case tok::kw__Bool: 2158 case tok::kw__Decimal32: 2159 case tok::kw__Decimal64: 2160 case tok::kw__Decimal128: 2161 case tok::kw___vector: 2162 2163 // struct-or-union-specifier (C99) or class-specifier (C++) 2164 case tok::kw_class: 2165 case tok::kw_struct: 2166 case tok::kw_union: 2167 // enum-specifier 2168 case tok::kw_enum: 2169 2170 // typedef-name 2171 case tok::annot_typename: 2172 return true; 2173 } 2174} 2175 2176/// isTypeSpecifierQualifier - Return true if the current token could be the 2177/// start of a specifier-qualifier-list. 2178bool Parser::isTypeSpecifierQualifier() { 2179 switch (Tok.getKind()) { 2180 default: return false; 2181 2182 case tok::identifier: // foo::bar 2183 if (TryAltiVecVectorToken()) 2184 return true; 2185 // Fall through. 2186 case tok::kw_typename: // typename T::type 2187 // Annotate typenames and C++ scope specifiers. If we get one, just 2188 // recurse to handle whatever we get. 2189 if (TryAnnotateTypeOrScopeToken()) 2190 return true; 2191 if (Tok.is(tok::identifier)) 2192 return false; 2193 return isTypeSpecifierQualifier(); 2194 2195 case tok::coloncolon: // ::foo::bar 2196 if (NextToken().is(tok::kw_new) || // ::new 2197 NextToken().is(tok::kw_delete)) // ::delete 2198 return false; 2199 2200 if (TryAnnotateTypeOrScopeToken()) 2201 return true; 2202 return isTypeSpecifierQualifier(); 2203 2204 // GNU attributes support. 2205 case tok::kw___attribute: 2206 // GNU typeof support. 2207 case tok::kw_typeof: 2208 2209 // type-specifiers 2210 case tok::kw_short: 2211 case tok::kw_long: 2212 case tok::kw_signed: 2213 case tok::kw_unsigned: 2214 case tok::kw__Complex: 2215 case tok::kw__Imaginary: 2216 case tok::kw_void: 2217 case tok::kw_char: 2218 case tok::kw_wchar_t: 2219 case tok::kw_char16_t: 2220 case tok::kw_char32_t: 2221 case tok::kw_int: 2222 case tok::kw_float: 2223 case tok::kw_double: 2224 case tok::kw_bool: 2225 case tok::kw__Bool: 2226 case tok::kw__Decimal32: 2227 case tok::kw__Decimal64: 2228 case tok::kw__Decimal128: 2229 case tok::kw___vector: 2230 2231 // struct-or-union-specifier (C99) or class-specifier (C++) 2232 case tok::kw_class: 2233 case tok::kw_struct: 2234 case tok::kw_union: 2235 // enum-specifier 2236 case tok::kw_enum: 2237 2238 // type-qualifier 2239 case tok::kw_const: 2240 case tok::kw_volatile: 2241 case tok::kw_restrict: 2242 2243 // typedef-name 2244 case tok::annot_typename: 2245 return true; 2246 2247 // GNU ObjC bizarre protocol extension: <proto1,proto2> with implicit 'id'. 2248 case tok::less: 2249 return getLang().ObjC1; 2250 2251 case tok::kw___cdecl: 2252 case tok::kw___stdcall: 2253 case tok::kw___fastcall: 2254 case tok::kw___thiscall: 2255 case tok::kw___w64: 2256 case tok::kw___ptr64: 2257 return true; 2258 } 2259} 2260 2261/// isDeclarationSpecifier() - Return true if the current token is part of a 2262/// declaration specifier. 2263bool Parser::isDeclarationSpecifier() { 2264 switch (Tok.getKind()) { 2265 default: return false; 2266 2267 case tok::identifier: // foo::bar 2268 // Unfortunate hack to support "Class.factoryMethod" notation. 2269 if (getLang().ObjC1 && NextToken().is(tok::period)) 2270 return false; 2271 if (TryAltiVecVectorToken()) 2272 return true; 2273 // Fall through. 2274 case tok::kw_typename: // typename T::type 2275 // Annotate typenames and C++ scope specifiers. If we get one, just 2276 // recurse to handle whatever we get. 2277 if (TryAnnotateTypeOrScopeToken()) 2278 return true; 2279 if (Tok.is(tok::identifier)) 2280 return false; 2281 return isDeclarationSpecifier(); 2282 2283 case tok::coloncolon: // ::foo::bar 2284 if (NextToken().is(tok::kw_new) || // ::new 2285 NextToken().is(tok::kw_delete)) // ::delete 2286 return false; 2287 2288 // Annotate typenames and C++ scope specifiers. If we get one, just 2289 // recurse to handle whatever we get. 2290 if (TryAnnotateTypeOrScopeToken()) 2291 return true; 2292 return isDeclarationSpecifier(); 2293 2294 // storage-class-specifier 2295 case tok::kw_typedef: 2296 case tok::kw_extern: 2297 case tok::kw___private_extern__: 2298 case tok::kw_static: 2299 case tok::kw_auto: 2300 case tok::kw_register: 2301 case tok::kw___thread: 2302 2303 // type-specifiers 2304 case tok::kw_short: 2305 case tok::kw_long: 2306 case tok::kw_signed: 2307 case tok::kw_unsigned: 2308 case tok::kw__Complex: 2309 case tok::kw__Imaginary: 2310 case tok::kw_void: 2311 case tok::kw_char: 2312 case tok::kw_wchar_t: 2313 case tok::kw_char16_t: 2314 case tok::kw_char32_t: 2315 2316 case tok::kw_int: 2317 case tok::kw_float: 2318 case tok::kw_double: 2319 case tok::kw_bool: 2320 case tok::kw__Bool: 2321 case tok::kw__Decimal32: 2322 case tok::kw__Decimal64: 2323 case tok::kw__Decimal128: 2324 case tok::kw___vector: 2325 2326 // struct-or-union-specifier (C99) or class-specifier (C++) 2327 case tok::kw_class: 2328 case tok::kw_struct: 2329 case tok::kw_union: 2330 // enum-specifier 2331 case tok::kw_enum: 2332 2333 // type-qualifier 2334 case tok::kw_const: 2335 case tok::kw_volatile: 2336 case tok::kw_restrict: 2337 2338 // function-specifier 2339 case tok::kw_inline: 2340 case tok::kw_virtual: 2341 case tok::kw_explicit: 2342 2343 // typedef-name 2344 case tok::annot_typename: 2345 2346 // GNU typeof support. 2347 case tok::kw_typeof: 2348 2349 // GNU attributes. 2350 case tok::kw___attribute: 2351 return true; 2352 2353 // GNU ObjC bizarre protocol extension: <proto1,proto2> with implicit 'id'. 2354 case tok::less: 2355 return getLang().ObjC1; 2356 2357 case tok::kw___declspec: 2358 case tok::kw___cdecl: 2359 case tok::kw___stdcall: 2360 case tok::kw___fastcall: 2361 case tok::kw___thiscall: 2362 case tok::kw___w64: 2363 case tok::kw___ptr64: 2364 case tok::kw___forceinline: 2365 return true; 2366 } 2367} 2368 2369bool Parser::isConstructorDeclarator() { 2370 TentativeParsingAction TPA(*this); 2371 2372 // Parse the C++ scope specifier. 2373 CXXScopeSpec SS; 2374 if (ParseOptionalCXXScopeSpecifier(SS, 0, true)) { 2375 TPA.Revert(); 2376 return false; 2377 } 2378 2379 // Parse the constructor name. 2380 if (Tok.is(tok::identifier) || Tok.is(tok::annot_template_id)) { 2381 // We already know that we have a constructor name; just consume 2382 // the token. 2383 ConsumeToken(); 2384 } else { 2385 TPA.Revert(); 2386 return false; 2387 } 2388 2389 // Current class name must be followed by a left parentheses. 2390 if (Tok.isNot(tok::l_paren)) { 2391 TPA.Revert(); 2392 return false; 2393 } 2394 ConsumeParen(); 2395 2396 // A right parentheses or ellipsis signals that we have a constructor. 2397 if (Tok.is(tok::r_paren) || Tok.is(tok::ellipsis)) { 2398 TPA.Revert(); 2399 return true; 2400 } 2401 2402 // If we need to, enter the specified scope. 2403 DeclaratorScopeObj DeclScopeObj(*this, SS); 2404 if (SS.isSet() && Actions.ShouldEnterDeclaratorScope(getCurScope(), SS)) 2405 DeclScopeObj.EnterDeclaratorScope(); 2406 2407 // Check whether the next token(s) are part of a declaration 2408 // specifier, in which case we have the start of a parameter and, 2409 // therefore, we know that this is a constructor. 2410 bool IsConstructor = isDeclarationSpecifier(); 2411 TPA.Revert(); 2412 return IsConstructor; 2413} 2414 2415/// ParseTypeQualifierListOpt 2416/// type-qualifier-list: [C99 6.7.5] 2417/// type-qualifier 2418/// [GNU] attributes [ only if AttributesAllowed=true ] 2419/// type-qualifier-list type-qualifier 2420/// [GNU] type-qualifier-list attributes [ only if AttributesAllowed=true ] 2421/// [C++0x] attribute-specifier[opt] is allowed before cv-qualifier-seq 2422/// if CXX0XAttributesAllowed = true 2423/// 2424void Parser::ParseTypeQualifierListOpt(DeclSpec &DS, bool GNUAttributesAllowed, 2425 bool CXX0XAttributesAllowed) { 2426 if (getLang().CPlusPlus0x && isCXX0XAttributeSpecifier()) { 2427 SourceLocation Loc = Tok.getLocation(); 2428 CXX0XAttributeList Attr = ParseCXX0XAttributes(); 2429 if (CXX0XAttributesAllowed) 2430 DS.AddAttributes(Attr.AttrList); 2431 else 2432 Diag(Loc, diag::err_attributes_not_allowed); 2433 } 2434 2435 while (1) { 2436 bool isInvalid = false; 2437 const char *PrevSpec = 0; 2438 unsigned DiagID = 0; 2439 SourceLocation Loc = Tok.getLocation(); 2440 2441 switch (Tok.getKind()) { 2442 case tok::kw_const: 2443 isInvalid = DS.SetTypeQual(DeclSpec::TQ_const , Loc, PrevSpec, DiagID, 2444 getLang()); 2445 break; 2446 case tok::kw_volatile: 2447 isInvalid = DS.SetTypeQual(DeclSpec::TQ_volatile, Loc, PrevSpec, DiagID, 2448 getLang()); 2449 break; 2450 case tok::kw_restrict: 2451 isInvalid = DS.SetTypeQual(DeclSpec::TQ_restrict, Loc, PrevSpec, DiagID, 2452 getLang()); 2453 break; 2454 case tok::kw___w64: 2455 case tok::kw___ptr64: 2456 case tok::kw___cdecl: 2457 case tok::kw___stdcall: 2458 case tok::kw___fastcall: 2459 case tok::kw___thiscall: 2460 if (GNUAttributesAllowed) { 2461 DS.AddAttributes(ParseMicrosoftTypeAttributes()); 2462 continue; 2463 } 2464 goto DoneWithTypeQuals; 2465 case tok::kw___attribute: 2466 if (GNUAttributesAllowed) { 2467 DS.AddAttributes(ParseGNUAttributes()); 2468 continue; // do *not* consume the next token! 2469 } 2470 // otherwise, FALL THROUGH! 2471 default: 2472 DoneWithTypeQuals: 2473 // If this is not a type-qualifier token, we're done reading type 2474 // qualifiers. First verify that DeclSpec's are consistent. 2475 DS.Finish(Diags, PP); 2476 return; 2477 } 2478 2479 // If the specifier combination wasn't legal, issue a diagnostic. 2480 if (isInvalid) { 2481 assert(PrevSpec && "Method did not return previous specifier!"); 2482 Diag(Tok, DiagID) << PrevSpec; 2483 } 2484 ConsumeToken(); 2485 } 2486} 2487 2488 2489/// ParseDeclarator - Parse and verify a newly-initialized declarator. 2490/// 2491void Parser::ParseDeclarator(Declarator &D) { 2492 /// This implements the 'declarator' production in the C grammar, then checks 2493 /// for well-formedness and issues diagnostics. 2494 ParseDeclaratorInternal(D, &Parser::ParseDirectDeclarator); 2495} 2496 2497/// ParseDeclaratorInternal - Parse a C or C++ declarator. The direct-declarator 2498/// is parsed by the function passed to it. Pass null, and the direct-declarator 2499/// isn't parsed at all, making this function effectively parse the C++ 2500/// ptr-operator production. 2501/// 2502/// declarator: [C99 6.7.5] [C++ 8p4, dcl.decl] 2503/// [C] pointer[opt] direct-declarator 2504/// [C++] direct-declarator 2505/// [C++] ptr-operator declarator 2506/// 2507/// pointer: [C99 6.7.5] 2508/// '*' type-qualifier-list[opt] 2509/// '*' type-qualifier-list[opt] pointer 2510/// 2511/// ptr-operator: 2512/// '*' cv-qualifier-seq[opt] 2513/// '&' 2514/// [C++0x] '&&' 2515/// [GNU] '&' restrict[opt] attributes[opt] 2516/// [GNU?] '&&' restrict[opt] attributes[opt] 2517/// '::'[opt] nested-name-specifier '*' cv-qualifier-seq[opt] 2518void Parser::ParseDeclaratorInternal(Declarator &D, 2519 DirectDeclParseFunction DirectDeclParser) { 2520 if (Diags.hasAllExtensionsSilenced()) 2521 D.setExtension(); 2522 2523 // C++ member pointers start with a '::' or a nested-name. 2524 // Member pointers get special handling, since there's no place for the 2525 // scope spec in the generic path below. 2526 if (getLang().CPlusPlus && 2527 (Tok.is(tok::coloncolon) || Tok.is(tok::identifier) || 2528 Tok.is(tok::annot_cxxscope))) { 2529 CXXScopeSpec SS; 2530 ParseOptionalCXXScopeSpecifier(SS, /*ObjectType=*/0, true); // ignore fail 2531 2532 if (SS.isNotEmpty()) { 2533 if (Tok.isNot(tok::star)) { 2534 // The scope spec really belongs to the direct-declarator. 2535 D.getCXXScopeSpec() = SS; 2536 if (DirectDeclParser) 2537 (this->*DirectDeclParser)(D); 2538 return; 2539 } 2540 2541 SourceLocation Loc = ConsumeToken(); 2542 D.SetRangeEnd(Loc); 2543 DeclSpec DS; 2544 ParseTypeQualifierListOpt(DS); 2545 D.ExtendWithDeclSpec(DS); 2546 2547 // Recurse to parse whatever is left. 2548 ParseDeclaratorInternal(D, DirectDeclParser); 2549 2550 // Sema will have to catch (syntactically invalid) pointers into global 2551 // scope. It has to catch pointers into namespace scope anyway. 2552 D.AddTypeInfo(DeclaratorChunk::getMemberPointer(SS,DS.getTypeQualifiers(), 2553 Loc, DS.TakeAttributes()), 2554 /* Don't replace range end. */SourceLocation()); 2555 return; 2556 } 2557 } 2558 2559 tok::TokenKind Kind = Tok.getKind(); 2560 // Not a pointer, C++ reference, or block. 2561 if (Kind != tok::star && Kind != tok::caret && 2562 (Kind != tok::amp || !getLang().CPlusPlus) && 2563 // We parse rvalue refs in C++03, because otherwise the errors are scary. 2564 (Kind != tok::ampamp || !getLang().CPlusPlus)) { 2565 if (DirectDeclParser) 2566 (this->*DirectDeclParser)(D); 2567 return; 2568 } 2569 2570 // Otherwise, '*' -> pointer, '^' -> block, '&' -> lvalue reference, 2571 // '&&' -> rvalue reference 2572 SourceLocation Loc = ConsumeToken(); // Eat the *, ^, & or &&. 2573 D.SetRangeEnd(Loc); 2574 2575 if (Kind == tok::star || Kind == tok::caret) { 2576 // Is a pointer. 2577 DeclSpec DS; 2578 2579 ParseTypeQualifierListOpt(DS); 2580 D.ExtendWithDeclSpec(DS); 2581 2582 // Recursively parse the declarator. 2583 ParseDeclaratorInternal(D, DirectDeclParser); 2584 if (Kind == tok::star) 2585 // Remember that we parsed a pointer type, and remember the type-quals. 2586 D.AddTypeInfo(DeclaratorChunk::getPointer(DS.getTypeQualifiers(), Loc, 2587 DS.TakeAttributes()), 2588 SourceLocation()); 2589 else 2590 // Remember that we parsed a Block type, and remember the type-quals. 2591 D.AddTypeInfo(DeclaratorChunk::getBlockPointer(DS.getTypeQualifiers(), 2592 Loc, DS.TakeAttributes()), 2593 SourceLocation()); 2594 } else { 2595 // Is a reference 2596 DeclSpec DS; 2597 2598 // Complain about rvalue references in C++03, but then go on and build 2599 // the declarator. 2600 if (Kind == tok::ampamp && !getLang().CPlusPlus0x) 2601 Diag(Loc, diag::err_rvalue_reference); 2602 2603 // C++ 8.3.2p1: cv-qualified references are ill-formed except when the 2604 // cv-qualifiers are introduced through the use of a typedef or of a 2605 // template type argument, in which case the cv-qualifiers are ignored. 2606 // 2607 // [GNU] Retricted references are allowed. 2608 // [GNU] Attributes on references are allowed. 2609 // [C++0x] Attributes on references are not allowed. 2610 ParseTypeQualifierListOpt(DS, true, false); 2611 D.ExtendWithDeclSpec(DS); 2612 2613 if (DS.getTypeQualifiers() != DeclSpec::TQ_unspecified) { 2614 if (DS.getTypeQualifiers() & DeclSpec::TQ_const) 2615 Diag(DS.getConstSpecLoc(), 2616 diag::err_invalid_reference_qualifier_application) << "const"; 2617 if (DS.getTypeQualifiers() & DeclSpec::TQ_volatile) 2618 Diag(DS.getVolatileSpecLoc(), 2619 diag::err_invalid_reference_qualifier_application) << "volatile"; 2620 } 2621 2622 // Recursively parse the declarator. 2623 ParseDeclaratorInternal(D, DirectDeclParser); 2624 2625 if (D.getNumTypeObjects() > 0) { 2626 // C++ [dcl.ref]p4: There shall be no references to references. 2627 DeclaratorChunk& InnerChunk = D.getTypeObject(D.getNumTypeObjects() - 1); 2628 if (InnerChunk.Kind == DeclaratorChunk::Reference) { 2629 if (const IdentifierInfo *II = D.getIdentifier()) 2630 Diag(InnerChunk.Loc, diag::err_illegal_decl_reference_to_reference) 2631 << II; 2632 else 2633 Diag(InnerChunk.Loc, diag::err_illegal_decl_reference_to_reference) 2634 << "type name"; 2635 2636 // Once we've complained about the reference-to-reference, we 2637 // can go ahead and build the (technically ill-formed) 2638 // declarator: reference collapsing will take care of it. 2639 } 2640 } 2641 2642 // Remember that we parsed a reference type. It doesn't have type-quals. 2643 D.AddTypeInfo(DeclaratorChunk::getReference(DS.getTypeQualifiers(), Loc, 2644 DS.TakeAttributes(), 2645 Kind == tok::amp), 2646 SourceLocation()); 2647 } 2648} 2649 2650/// ParseDirectDeclarator 2651/// direct-declarator: [C99 6.7.5] 2652/// [C99] identifier 2653/// '(' declarator ')' 2654/// [GNU] '(' attributes declarator ')' 2655/// [C90] direct-declarator '[' constant-expression[opt] ']' 2656/// [C99] direct-declarator '[' type-qual-list[opt] assignment-expr[opt] ']' 2657/// [C99] direct-declarator '[' 'static' type-qual-list[opt] assign-expr ']' 2658/// [C99] direct-declarator '[' type-qual-list 'static' assignment-expr ']' 2659/// [C99] direct-declarator '[' type-qual-list[opt] '*' ']' 2660/// direct-declarator '(' parameter-type-list ')' 2661/// direct-declarator '(' identifier-list[opt] ')' 2662/// [GNU] direct-declarator '(' parameter-forward-declarations 2663/// parameter-type-list[opt] ')' 2664/// [C++] direct-declarator '(' parameter-declaration-clause ')' 2665/// cv-qualifier-seq[opt] exception-specification[opt] 2666/// [C++] declarator-id 2667/// 2668/// declarator-id: [C++ 8] 2669/// id-expression 2670/// '::'[opt] nested-name-specifier[opt] type-name 2671/// 2672/// id-expression: [C++ 5.1] 2673/// unqualified-id 2674/// qualified-id 2675/// 2676/// unqualified-id: [C++ 5.1] 2677/// identifier 2678/// operator-function-id 2679/// conversion-function-id 2680/// '~' class-name 2681/// template-id 2682/// 2683void Parser::ParseDirectDeclarator(Declarator &D) { 2684 DeclaratorScopeObj DeclScopeObj(*this, D.getCXXScopeSpec()); 2685 2686 if (getLang().CPlusPlus && D.mayHaveIdentifier()) { 2687 // ParseDeclaratorInternal might already have parsed the scope. 2688 if (D.getCXXScopeSpec().isEmpty()) { 2689 ParseOptionalCXXScopeSpecifier(D.getCXXScopeSpec(), /*ObjectType=*/0, 2690 true); 2691 } 2692 2693 if (D.getCXXScopeSpec().isValid()) { 2694 if (Actions.ShouldEnterDeclaratorScope(getCurScope(), D.getCXXScopeSpec())) 2695 // Change the declaration context for name lookup, until this function 2696 // is exited (and the declarator has been parsed). 2697 DeclScopeObj.EnterDeclaratorScope(); 2698 } 2699 2700 if (Tok.is(tok::identifier) || Tok.is(tok::kw_operator) || 2701 Tok.is(tok::annot_template_id) || Tok.is(tok::tilde)) { 2702 // We found something that indicates the start of an unqualified-id. 2703 // Parse that unqualified-id. 2704 bool AllowConstructorName; 2705 if (D.getDeclSpec().hasTypeSpecifier()) 2706 AllowConstructorName = false; 2707 else if (D.getCXXScopeSpec().isSet()) 2708 AllowConstructorName = 2709 (D.getContext() == Declarator::FileContext || 2710 (D.getContext() == Declarator::MemberContext && 2711 D.getDeclSpec().isFriendSpecified())); 2712 else 2713 AllowConstructorName = (D.getContext() == Declarator::MemberContext); 2714 2715 if (ParseUnqualifiedId(D.getCXXScopeSpec(), 2716 /*EnteringContext=*/true, 2717 /*AllowDestructorName=*/true, 2718 AllowConstructorName, 2719 /*ObjectType=*/0, 2720 D.getName()) || 2721 // Once we're past the identifier, if the scope was bad, mark the 2722 // whole declarator bad. 2723 D.getCXXScopeSpec().isInvalid()) { 2724 D.SetIdentifier(0, Tok.getLocation()); 2725 D.setInvalidType(true); 2726 } else { 2727 // Parsed the unqualified-id; update range information and move along. 2728 if (D.getSourceRange().getBegin().isInvalid()) 2729 D.SetRangeBegin(D.getName().getSourceRange().getBegin()); 2730 D.SetRangeEnd(D.getName().getSourceRange().getEnd()); 2731 } 2732 goto PastIdentifier; 2733 } 2734 } else if (Tok.is(tok::identifier) && D.mayHaveIdentifier()) { 2735 assert(!getLang().CPlusPlus && 2736 "There's a C++-specific check for tok::identifier above"); 2737 assert(Tok.getIdentifierInfo() && "Not an identifier?"); 2738 D.SetIdentifier(Tok.getIdentifierInfo(), Tok.getLocation()); 2739 ConsumeToken(); 2740 goto PastIdentifier; 2741 } 2742 2743 if (Tok.is(tok::l_paren)) { 2744 // direct-declarator: '(' declarator ')' 2745 // direct-declarator: '(' attributes declarator ')' 2746 // Example: 'char (*X)' or 'int (*XX)(void)' 2747 ParseParenDeclarator(D); 2748 2749 // If the declarator was parenthesized, we entered the declarator 2750 // scope when parsing the parenthesized declarator, then exited 2751 // the scope already. Re-enter the scope, if we need to. 2752 if (D.getCXXScopeSpec().isSet()) { 2753 // If there was an error parsing parenthesized declarator, declarator 2754 // scope may have been enterred before. Don't do it again. 2755 if (!D.isInvalidType() && 2756 Actions.ShouldEnterDeclaratorScope(getCurScope(), D.getCXXScopeSpec())) 2757 // Change the declaration context for name lookup, until this function 2758 // is exited (and the declarator has been parsed). 2759 DeclScopeObj.EnterDeclaratorScope(); 2760 } 2761 } else if (D.mayOmitIdentifier()) { 2762 // This could be something simple like "int" (in which case the declarator 2763 // portion is empty), if an abstract-declarator is allowed. 2764 D.SetIdentifier(0, Tok.getLocation()); 2765 } else { 2766 if (D.getContext() == Declarator::MemberContext) 2767 Diag(Tok, diag::err_expected_member_name_or_semi) 2768 << D.getDeclSpec().getSourceRange(); 2769 else if (getLang().CPlusPlus) 2770 Diag(Tok, diag::err_expected_unqualified_id) << getLang().CPlusPlus; 2771 else 2772 Diag(Tok, diag::err_expected_ident_lparen); 2773 D.SetIdentifier(0, Tok.getLocation()); 2774 D.setInvalidType(true); 2775 } 2776 2777 PastIdentifier: 2778 assert(D.isPastIdentifier() && 2779 "Haven't past the location of the identifier yet?"); 2780 2781 // Don't parse attributes unless we have an identifier. 2782 if (D.getIdentifier() && getLang().CPlusPlus0x 2783 && isCXX0XAttributeSpecifier(true)) { 2784 SourceLocation AttrEndLoc; 2785 CXX0XAttributeList Attr = ParseCXX0XAttributes(); 2786 D.AddAttributes(Attr.AttrList, AttrEndLoc); 2787 } 2788 2789 while (1) { 2790 if (Tok.is(tok::l_paren)) { 2791 // The paren may be part of a C++ direct initializer, eg. "int x(1);". 2792 // In such a case, check if we actually have a function declarator; if it 2793 // is not, the declarator has been fully parsed. 2794 if (getLang().CPlusPlus && D.mayBeFollowedByCXXDirectInit()) { 2795 // When not in file scope, warn for ambiguous function declarators, just 2796 // in case the author intended it as a variable definition. 2797 bool warnIfAmbiguous = D.getContext() != Declarator::FileContext; 2798 if (!isCXXFunctionDeclarator(warnIfAmbiguous)) 2799 break; 2800 } 2801 ParseFunctionDeclarator(ConsumeParen(), D); 2802 } else if (Tok.is(tok::l_square)) { 2803 ParseBracketDeclarator(D); 2804 } else { 2805 break; 2806 } 2807 } 2808} 2809 2810/// ParseParenDeclarator - We parsed the declarator D up to a paren. This is 2811/// only called before the identifier, so these are most likely just grouping 2812/// parens for precedence. If we find that these are actually function 2813/// parameter parens in an abstract-declarator, we call ParseFunctionDeclarator. 2814/// 2815/// direct-declarator: 2816/// '(' declarator ')' 2817/// [GNU] '(' attributes declarator ')' 2818/// direct-declarator '(' parameter-type-list ')' 2819/// direct-declarator '(' identifier-list[opt] ')' 2820/// [GNU] direct-declarator '(' parameter-forward-declarations 2821/// parameter-type-list[opt] ')' 2822/// 2823void Parser::ParseParenDeclarator(Declarator &D) { 2824 SourceLocation StartLoc = ConsumeParen(); 2825 assert(!D.isPastIdentifier() && "Should be called before passing identifier"); 2826 2827 // Eat any attributes before we look at whether this is a grouping or function 2828 // declarator paren. If this is a grouping paren, the attribute applies to 2829 // the type being built up, for example: 2830 // int (__attribute__(()) *x)(long y) 2831 // If this ends up not being a grouping paren, the attribute applies to the 2832 // first argument, for example: 2833 // int (__attribute__(()) int x) 2834 // In either case, we need to eat any attributes to be able to determine what 2835 // sort of paren this is. 2836 // 2837 llvm::OwningPtr<AttributeList> AttrList; 2838 bool RequiresArg = false; 2839 if (Tok.is(tok::kw___attribute)) { 2840 AttrList.reset(ParseGNUAttributes()); 2841 2842 // We require that the argument list (if this is a non-grouping paren) be 2843 // present even if the attribute list was empty. 2844 RequiresArg = true; 2845 } 2846 // Eat any Microsoft extensions. 2847 if (Tok.is(tok::kw___cdecl) || Tok.is(tok::kw___stdcall) || 2848 Tok.is(tok::kw___thiscall) || Tok.is(tok::kw___fastcall) || 2849 Tok.is(tok::kw___w64) || Tok.is(tok::kw___ptr64)) { 2850 AttrList.reset(ParseMicrosoftTypeAttributes(AttrList.take())); 2851 } 2852 2853 // If we haven't past the identifier yet (or where the identifier would be 2854 // stored, if this is an abstract declarator), then this is probably just 2855 // grouping parens. However, if this could be an abstract-declarator, then 2856 // this could also be the start of function arguments (consider 'void()'). 2857 bool isGrouping; 2858 2859 if (!D.mayOmitIdentifier()) { 2860 // If this can't be an abstract-declarator, this *must* be a grouping 2861 // paren, because we haven't seen the identifier yet. 2862 isGrouping = true; 2863 } else if (Tok.is(tok::r_paren) || // 'int()' is a function. 2864 (getLang().CPlusPlus && Tok.is(tok::ellipsis)) || // C++ int(...) 2865 isDeclarationSpecifier()) { // 'int(int)' is a function. 2866 // This handles C99 6.7.5.3p11: in "typedef int X; void foo(X)", X is 2867 // considered to be a type, not a K&R identifier-list. 2868 isGrouping = false; 2869 } else { 2870 // Otherwise, this is a grouping paren, e.g. 'int (*X)' or 'int(X)'. 2871 isGrouping = true; 2872 } 2873 2874 // If this is a grouping paren, handle: 2875 // direct-declarator: '(' declarator ')' 2876 // direct-declarator: '(' attributes declarator ')' 2877 if (isGrouping) { 2878 bool hadGroupingParens = D.hasGroupingParens(); 2879 D.setGroupingParens(true); 2880 if (AttrList) 2881 D.AddAttributes(AttrList.take(), SourceLocation()); 2882 2883 ParseDeclaratorInternal(D, &Parser::ParseDirectDeclarator); 2884 // Match the ')'. 2885 SourceLocation Loc = MatchRHSPunctuation(tok::r_paren, StartLoc); 2886 2887 D.setGroupingParens(hadGroupingParens); 2888 D.SetRangeEnd(Loc); 2889 return; 2890 } 2891 2892 // Okay, if this wasn't a grouping paren, it must be the start of a function 2893 // argument list. Recognize that this declarator will never have an 2894 // identifier (and remember where it would have been), then call into 2895 // ParseFunctionDeclarator to handle of argument list. 2896 D.SetIdentifier(0, Tok.getLocation()); 2897 2898 ParseFunctionDeclarator(StartLoc, D, AttrList.take(), RequiresArg); 2899} 2900 2901/// ParseFunctionDeclarator - We are after the identifier and have parsed the 2902/// declarator D up to a paren, which indicates that we are parsing function 2903/// arguments. 2904/// 2905/// If AttrList is non-null, then the caller parsed those arguments immediately 2906/// after the open paren - they should be considered to be the first argument of 2907/// a parameter. If RequiresArg is true, then the first argument of the 2908/// function is required to be present and required to not be an identifier 2909/// list. 2910/// 2911/// This method also handles this portion of the grammar: 2912/// parameter-type-list: [C99 6.7.5] 2913/// parameter-list 2914/// parameter-list ',' '...' 2915/// [C++] parameter-list '...' 2916/// 2917/// parameter-list: [C99 6.7.5] 2918/// parameter-declaration 2919/// parameter-list ',' parameter-declaration 2920/// 2921/// parameter-declaration: [C99 6.7.5] 2922/// declaration-specifiers declarator 2923/// [C++] declaration-specifiers declarator '=' assignment-expression 2924/// [GNU] declaration-specifiers declarator attributes 2925/// declaration-specifiers abstract-declarator[opt] 2926/// [C++] declaration-specifiers abstract-declarator[opt] 2927/// '=' assignment-expression 2928/// [GNU] declaration-specifiers abstract-declarator[opt] attributes 2929/// 2930/// For C++, after the parameter-list, it also parses "cv-qualifier-seq[opt]" 2931/// and "exception-specification[opt]". 2932/// 2933void Parser::ParseFunctionDeclarator(SourceLocation LParenLoc, Declarator &D, 2934 AttributeList *AttrList, 2935 bool RequiresArg) { 2936 // lparen is already consumed! 2937 assert(D.isPastIdentifier() && "Should not call before identifier!"); 2938 2939 // This parameter list may be empty. 2940 if (Tok.is(tok::r_paren)) { 2941 if (RequiresArg) { 2942 Diag(Tok, diag::err_argument_required_after_attribute); 2943 delete AttrList; 2944 } 2945 2946 SourceLocation RParenLoc = ConsumeParen(); // Eat the closing ')'. 2947 SourceLocation EndLoc = RParenLoc; 2948 2949 // cv-qualifier-seq[opt]. 2950 DeclSpec DS; 2951 bool hasExceptionSpec = false; 2952 SourceLocation ThrowLoc; 2953 bool hasAnyExceptionSpec = false; 2954 llvm::SmallVector<TypeTy*, 2> Exceptions; 2955 llvm::SmallVector<SourceRange, 2> ExceptionRanges; 2956 if (getLang().CPlusPlus) { 2957 ParseTypeQualifierListOpt(DS, false /*no attributes*/); 2958 if (!DS.getSourceRange().getEnd().isInvalid()) 2959 EndLoc = DS.getSourceRange().getEnd(); 2960 2961 // Parse exception-specification[opt]. 2962 if (Tok.is(tok::kw_throw)) { 2963 hasExceptionSpec = true; 2964 ThrowLoc = Tok.getLocation(); 2965 ParseExceptionSpecification(EndLoc, Exceptions, ExceptionRanges, 2966 hasAnyExceptionSpec); 2967 assert(Exceptions.size() == ExceptionRanges.size() && 2968 "Produced different number of exception types and ranges."); 2969 } 2970 } 2971 2972 // Remember that we parsed a function type, and remember the attributes. 2973 // int() -> no prototype, no '...'. 2974 D.AddTypeInfo(DeclaratorChunk::getFunction(/*prototype*/getLang().CPlusPlus, 2975 /*variadic*/ false, 2976 SourceLocation(), 2977 /*arglist*/ 0, 0, 2978 DS.getTypeQualifiers(), 2979 hasExceptionSpec, ThrowLoc, 2980 hasAnyExceptionSpec, 2981 Exceptions.data(), 2982 ExceptionRanges.data(), 2983 Exceptions.size(), 2984 LParenLoc, RParenLoc, D), 2985 EndLoc); 2986 return; 2987 } 2988 2989 // Alternatively, this parameter list may be an identifier list form for a 2990 // K&R-style function: void foo(a,b,c) 2991 if (!getLang().CPlusPlus && Tok.is(tok::identifier) 2992 && !TryAltiVecVectorToken()) { 2993 if (TryAnnotateTypeOrScopeToken() || !Tok.is(tok::annot_typename)) { 2994 // K&R identifier lists can't have typedefs as identifiers, per 2995 // C99 6.7.5.3p11. 2996 if (RequiresArg) { 2997 Diag(Tok, diag::err_argument_required_after_attribute); 2998 delete AttrList; 2999 } 3000 3001 // Identifier list. Note that '(' identifier-list ')' is only allowed for 3002 // normal declarators, not for abstract-declarators. Get the first 3003 // identifier. 3004 Token FirstTok = Tok; 3005 ConsumeToken(); // eat the first identifier. 3006 3007 // Identifier lists follow a really simple grammar: the identifiers can 3008 // be followed *only* by a ", moreidentifiers" or ")". However, K&R 3009 // identifier lists are really rare in the brave new modern world, and it 3010 // is very common for someone to typo a type in a non-k&r style list. If 3011 // we are presented with something like: "void foo(intptr x, float y)", 3012 // we don't want to start parsing the function declarator as though it is 3013 // a K&R style declarator just because intptr is an invalid type. 3014 // 3015 // To handle this, we check to see if the token after the first identifier 3016 // is a "," or ")". Only if so, do we parse it as an identifier list. 3017 if (Tok.is(tok::comma) || Tok.is(tok::r_paren)) 3018 return ParseFunctionDeclaratorIdentifierList(LParenLoc, 3019 FirstTok.getIdentifierInfo(), 3020 FirstTok.getLocation(), D); 3021 3022 // If we get here, the code is invalid. Push the first identifier back 3023 // into the token stream and parse the first argument as an (invalid) 3024 // normal argument declarator. 3025 PP.EnterToken(Tok); 3026 Tok = FirstTok; 3027 } 3028 } 3029 3030 // Finally, a normal, non-empty parameter type list. 3031 3032 // Build up an array of information about the parsed arguments. 3033 llvm::SmallVector<DeclaratorChunk::ParamInfo, 16> ParamInfo; 3034 3035 // Enter function-declaration scope, limiting any declarators to the 3036 // function prototype scope, including parameter declarators. 3037 ParseScope PrototypeScope(this, 3038 Scope::FunctionPrototypeScope|Scope::DeclScope); 3039 3040 bool IsVariadic = false; 3041 SourceLocation EllipsisLoc; 3042 while (1) { 3043 if (Tok.is(tok::ellipsis)) { 3044 IsVariadic = true; 3045 EllipsisLoc = ConsumeToken(); // Consume the ellipsis. 3046 break; 3047 } 3048 3049 SourceLocation DSStart = Tok.getLocation(); 3050 3051 // Parse the declaration-specifiers. 3052 // Just use the ParsingDeclaration "scope" of the declarator. 3053 DeclSpec DS; 3054 3055 // If the caller parsed attributes for the first argument, add them now. 3056 if (AttrList) { 3057 DS.AddAttributes(AttrList); 3058 AttrList = 0; // Only apply the attributes to the first parameter. 3059 } 3060 ParseDeclarationSpecifiers(DS); 3061 3062 // Parse the declarator. This is "PrototypeContext", because we must 3063 // accept either 'declarator' or 'abstract-declarator' here. 3064 Declarator ParmDecl(DS, Declarator::PrototypeContext); 3065 ParseDeclarator(ParmDecl); 3066 3067 // Parse GNU attributes, if present. 3068 if (Tok.is(tok::kw___attribute)) { 3069 SourceLocation Loc; 3070 AttributeList *AttrList = ParseGNUAttributes(&Loc); 3071 ParmDecl.AddAttributes(AttrList, Loc); 3072 } 3073 3074 // Remember this parsed parameter in ParamInfo. 3075 IdentifierInfo *ParmII = ParmDecl.getIdentifier(); 3076 3077 // DefArgToks is used when the parsing of default arguments needs 3078 // to be delayed. 3079 CachedTokens *DefArgToks = 0; 3080 3081 // If no parameter was specified, verify that *something* was specified, 3082 // otherwise we have a missing type and identifier. 3083 if (DS.isEmpty() && ParmDecl.getIdentifier() == 0 && 3084 ParmDecl.getNumTypeObjects() == 0) { 3085 // Completely missing, emit error. 3086 Diag(DSStart, diag::err_missing_param); 3087 } else { 3088 // Otherwise, we have something. Add it and let semantic analysis try 3089 // to grok it and add the result to the ParamInfo we are building. 3090 3091 // Inform the actions module about the parameter declarator, so it gets 3092 // added to the current scope. 3093 Decl *Param = Actions.ActOnParamDeclarator(getCurScope(), ParmDecl); 3094 3095 // Parse the default argument, if any. We parse the default 3096 // arguments in all dialects; the semantic analysis in 3097 // ActOnParamDefaultArgument will reject the default argument in 3098 // C. 3099 if (Tok.is(tok::equal)) { 3100 SourceLocation EqualLoc = Tok.getLocation(); 3101 3102 // Parse the default argument 3103 if (D.getContext() == Declarator::MemberContext) { 3104 // If we're inside a class definition, cache the tokens 3105 // corresponding to the default argument. We'll actually parse 3106 // them when we see the end of the class definition. 3107 // FIXME: Templates will require something similar. 3108 // FIXME: Can we use a smart pointer for Toks? 3109 DefArgToks = new CachedTokens; 3110 3111 if (!ConsumeAndStoreUntil(tok::comma, tok::r_paren, *DefArgToks, 3112 /*StopAtSemi=*/true, 3113 /*ConsumeFinalToken=*/false)) { 3114 delete DefArgToks; 3115 DefArgToks = 0; 3116 Actions.ActOnParamDefaultArgumentError(Param); 3117 } else { 3118 // Mark the end of the default argument so that we know when to 3119 // stop when we parse it later on. 3120 Token DefArgEnd; 3121 DefArgEnd.startToken(); 3122 DefArgEnd.setKind(tok::cxx_defaultarg_end); 3123 DefArgEnd.setLocation(Tok.getLocation()); 3124 DefArgToks->push_back(DefArgEnd); 3125 Actions.ActOnParamUnparsedDefaultArgument(Param, EqualLoc, 3126 (*DefArgToks)[1].getLocation()); 3127 } 3128 } else { 3129 // Consume the '='. 3130 ConsumeToken(); 3131 3132 OwningExprResult DefArgResult(ParseAssignmentExpression()); 3133 if (DefArgResult.isInvalid()) { 3134 Actions.ActOnParamDefaultArgumentError(Param); 3135 SkipUntil(tok::comma, tok::r_paren, true, true); 3136 } else { 3137 // Inform the actions module about the default argument 3138 Actions.ActOnParamDefaultArgument(Param, EqualLoc, 3139 DefArgResult.take()); 3140 } 3141 } 3142 } 3143 3144 ParamInfo.push_back(DeclaratorChunk::ParamInfo(ParmII, 3145 ParmDecl.getIdentifierLoc(), Param, 3146 DefArgToks)); 3147 } 3148 3149 // If the next token is a comma, consume it and keep reading arguments. 3150 if (Tok.isNot(tok::comma)) { 3151 if (Tok.is(tok::ellipsis)) { 3152 IsVariadic = true; 3153 EllipsisLoc = ConsumeToken(); // Consume the ellipsis. 3154 3155 if (!getLang().CPlusPlus) { 3156 // We have ellipsis without a preceding ',', which is ill-formed 3157 // in C. Complain and provide the fix. 3158 Diag(EllipsisLoc, diag::err_missing_comma_before_ellipsis) 3159 << FixItHint::CreateInsertion(EllipsisLoc, ", "); 3160 } 3161 } 3162 3163 break; 3164 } 3165 3166 // Consume the comma. 3167 ConsumeToken(); 3168 } 3169 3170 // Leave prototype scope. 3171 PrototypeScope.Exit(); 3172 3173 // If we have the closing ')', eat it. 3174 SourceLocation RParenLoc = MatchRHSPunctuation(tok::r_paren, LParenLoc); 3175 SourceLocation EndLoc = RParenLoc; 3176 3177 DeclSpec DS; 3178 bool hasExceptionSpec = false; 3179 SourceLocation ThrowLoc; 3180 bool hasAnyExceptionSpec = false; 3181 llvm::SmallVector<TypeTy*, 2> Exceptions; 3182 llvm::SmallVector<SourceRange, 2> ExceptionRanges; 3183 3184 if (getLang().CPlusPlus) { 3185 // Parse cv-qualifier-seq[opt]. 3186 ParseTypeQualifierListOpt(DS, false /*no attributes*/); 3187 if (!DS.getSourceRange().getEnd().isInvalid()) 3188 EndLoc = DS.getSourceRange().getEnd(); 3189 3190 // Parse exception-specification[opt]. 3191 if (Tok.is(tok::kw_throw)) { 3192 hasExceptionSpec = true; 3193 ThrowLoc = Tok.getLocation(); 3194 ParseExceptionSpecification(EndLoc, Exceptions, ExceptionRanges, 3195 hasAnyExceptionSpec); 3196 assert(Exceptions.size() == ExceptionRanges.size() && 3197 "Produced different number of exception types and ranges."); 3198 } 3199 } 3200 3201 // Remember that we parsed a function type, and remember the attributes. 3202 D.AddTypeInfo(DeclaratorChunk::getFunction(/*proto*/true, IsVariadic, 3203 EllipsisLoc, 3204 ParamInfo.data(), ParamInfo.size(), 3205 DS.getTypeQualifiers(), 3206 hasExceptionSpec, ThrowLoc, 3207 hasAnyExceptionSpec, 3208 Exceptions.data(), 3209 ExceptionRanges.data(), 3210 Exceptions.size(), 3211 LParenLoc, RParenLoc, D), 3212 EndLoc); 3213} 3214 3215/// ParseFunctionDeclaratorIdentifierList - While parsing a function declarator 3216/// we found a K&R-style identifier list instead of a type argument list. The 3217/// first identifier has already been consumed, and the current token is the 3218/// token right after it. 3219/// 3220/// identifier-list: [C99 6.7.5] 3221/// identifier 3222/// identifier-list ',' identifier 3223/// 3224void Parser::ParseFunctionDeclaratorIdentifierList(SourceLocation LParenLoc, 3225 IdentifierInfo *FirstIdent, 3226 SourceLocation FirstIdentLoc, 3227 Declarator &D) { 3228 // Build up an array of information about the parsed arguments. 3229 llvm::SmallVector<DeclaratorChunk::ParamInfo, 16> ParamInfo; 3230 llvm::SmallSet<const IdentifierInfo*, 16> ParamsSoFar; 3231 3232 // If there was no identifier specified for the declarator, either we are in 3233 // an abstract-declarator, or we are in a parameter declarator which was found 3234 // to be abstract. In abstract-declarators, identifier lists are not valid: 3235 // diagnose this. 3236 if (!D.getIdentifier()) 3237 Diag(FirstIdentLoc, diag::ext_ident_list_in_param); 3238 3239 // The first identifier was already read, and is known to be the first 3240 // identifier in the list. Remember this identifier in ParamInfo. 3241 ParamsSoFar.insert(FirstIdent); 3242 ParamInfo.push_back(DeclaratorChunk::ParamInfo(FirstIdent, FirstIdentLoc, 0)); 3243 3244 while (Tok.is(tok::comma)) { 3245 // Eat the comma. 3246 ConsumeToken(); 3247 3248 // If this isn't an identifier, report the error and skip until ')'. 3249 if (Tok.isNot(tok::identifier)) { 3250 Diag(Tok, diag::err_expected_ident); 3251 SkipUntil(tok::r_paren); 3252 return; 3253 } 3254 3255 IdentifierInfo *ParmII = Tok.getIdentifierInfo(); 3256 3257 // Reject 'typedef int y; int test(x, y)', but continue parsing. 3258 if (Actions.getTypeName(*ParmII, Tok.getLocation(), getCurScope())) 3259 Diag(Tok, diag::err_unexpected_typedef_ident) << ParmII; 3260 3261 // Verify that the argument identifier has not already been mentioned. 3262 if (!ParamsSoFar.insert(ParmII)) { 3263 Diag(Tok, diag::err_param_redefinition) << ParmII; 3264 } else { 3265 // Remember this identifier in ParamInfo. 3266 ParamInfo.push_back(DeclaratorChunk::ParamInfo(ParmII, 3267 Tok.getLocation(), 3268 0)); 3269 } 3270 3271 // Eat the identifier. 3272 ConsumeToken(); 3273 } 3274 3275 // If we have the closing ')', eat it and we're done. 3276 SourceLocation RLoc = MatchRHSPunctuation(tok::r_paren, LParenLoc); 3277 3278 // Remember that we parsed a function type, and remember the attributes. This 3279 // function type is always a K&R style function type, which is not varargs and 3280 // has no prototype. 3281 D.AddTypeInfo(DeclaratorChunk::getFunction(/*proto*/false, /*varargs*/false, 3282 SourceLocation(), 3283 &ParamInfo[0], ParamInfo.size(), 3284 /*TypeQuals*/0, 3285 /*exception*/false, 3286 SourceLocation(), false, 0, 0, 0, 3287 LParenLoc, RLoc, D), 3288 RLoc); 3289} 3290 3291/// [C90] direct-declarator '[' constant-expression[opt] ']' 3292/// [C99] direct-declarator '[' type-qual-list[opt] assignment-expr[opt] ']' 3293/// [C99] direct-declarator '[' 'static' type-qual-list[opt] assign-expr ']' 3294/// [C99] direct-declarator '[' type-qual-list 'static' assignment-expr ']' 3295/// [C99] direct-declarator '[' type-qual-list[opt] '*' ']' 3296void Parser::ParseBracketDeclarator(Declarator &D) { 3297 SourceLocation StartLoc = ConsumeBracket(); 3298 3299 // C array syntax has many features, but by-far the most common is [] and [4]. 3300 // This code does a fast path to handle some of the most obvious cases. 3301 if (Tok.getKind() == tok::r_square) { 3302 SourceLocation EndLoc = MatchRHSPunctuation(tok::r_square, StartLoc); 3303 //FIXME: Use these 3304 CXX0XAttributeList Attr; 3305 if (getLang().CPlusPlus0x && isCXX0XAttributeSpecifier(true)) { 3306 Attr = ParseCXX0XAttributes(); 3307 } 3308 3309 // Remember that we parsed the empty array type. 3310 OwningExprResult NumElements; 3311 D.AddTypeInfo(DeclaratorChunk::getArray(0, false, false, 0, 3312 StartLoc, EndLoc), 3313 EndLoc); 3314 return; 3315 } else if (Tok.getKind() == tok::numeric_constant && 3316 GetLookAheadToken(1).is(tok::r_square)) { 3317 // [4] is very common. Parse the numeric constant expression. 3318 OwningExprResult ExprRes(Actions.ActOnNumericConstant(Tok)); 3319 ConsumeToken(); 3320 3321 SourceLocation EndLoc = MatchRHSPunctuation(tok::r_square, StartLoc); 3322 //FIXME: Use these 3323 CXX0XAttributeList Attr; 3324 if (getLang().CPlusPlus0x && isCXX0XAttributeSpecifier()) { 3325 Attr = ParseCXX0XAttributes(); 3326 } 3327 3328 // If there was an error parsing the assignment-expression, recover. 3329 if (ExprRes.isInvalid()) 3330 ExprRes.release(); // Deallocate expr, just use []. 3331 3332 // Remember that we parsed a array type, and remember its features. 3333 D.AddTypeInfo(DeclaratorChunk::getArray(0, false, 0, ExprRes.release(), 3334 StartLoc, EndLoc), 3335 EndLoc); 3336 return; 3337 } 3338 3339 // If valid, this location is the position where we read the 'static' keyword. 3340 SourceLocation StaticLoc; 3341 if (Tok.is(tok::kw_static)) 3342 StaticLoc = ConsumeToken(); 3343 3344 // If there is a type-qualifier-list, read it now. 3345 // Type qualifiers in an array subscript are a C99 feature. 3346 DeclSpec DS; 3347 ParseTypeQualifierListOpt(DS, false /*no attributes*/); 3348 3349 // If we haven't already read 'static', check to see if there is one after the 3350 // type-qualifier-list. 3351 if (!StaticLoc.isValid() && Tok.is(tok::kw_static)) 3352 StaticLoc = ConsumeToken(); 3353 3354 // Handle "direct-declarator [ type-qual-list[opt] * ]". 3355 bool isStar = false; 3356 OwningExprResult NumElements; 3357 3358 // Handle the case where we have '[*]' as the array size. However, a leading 3359 // star could be the start of an expression, for example 'X[*p + 4]'. Verify 3360 // the the token after the star is a ']'. Since stars in arrays are 3361 // infrequent, use of lookahead is not costly here. 3362 if (Tok.is(tok::star) && GetLookAheadToken(1).is(tok::r_square)) { 3363 ConsumeToken(); // Eat the '*'. 3364 3365 if (StaticLoc.isValid()) { 3366 Diag(StaticLoc, diag::err_unspecified_vla_size_with_static); 3367 StaticLoc = SourceLocation(); // Drop the static. 3368 } 3369 isStar = true; 3370 } else if (Tok.isNot(tok::r_square)) { 3371 // Note, in C89, this production uses the constant-expr production instead 3372 // of assignment-expr. The only difference is that assignment-expr allows 3373 // things like '=' and '*='. Sema rejects these in C89 mode because they 3374 // are not i-c-e's, so we don't need to distinguish between the two here. 3375 3376 // Parse the constant-expression or assignment-expression now (depending 3377 // on dialect). 3378 if (getLang().CPlusPlus) 3379 NumElements = ParseConstantExpression(); 3380 else 3381 NumElements = ParseAssignmentExpression(); 3382 } 3383 3384 // If there was an error parsing the assignment-expression, recover. 3385 if (NumElements.isInvalid()) { 3386 D.setInvalidType(true); 3387 // If the expression was invalid, skip it. 3388 SkipUntil(tok::r_square); 3389 return; 3390 } 3391 3392 SourceLocation EndLoc = MatchRHSPunctuation(tok::r_square, StartLoc); 3393 3394 //FIXME: Use these 3395 CXX0XAttributeList Attr; 3396 if (getLang().CPlusPlus0x && isCXX0XAttributeSpecifier()) { 3397 Attr = ParseCXX0XAttributes(); 3398 } 3399 3400 // Remember that we parsed a array type, and remember its features. 3401 D.AddTypeInfo(DeclaratorChunk::getArray(DS.getTypeQualifiers(), 3402 StaticLoc.isValid(), isStar, 3403 NumElements.release(), 3404 StartLoc, EndLoc), 3405 EndLoc); 3406} 3407 3408/// [GNU] typeof-specifier: 3409/// typeof ( expressions ) 3410/// typeof ( type-name ) 3411/// [GNU/C++] typeof unary-expression 3412/// 3413void Parser::ParseTypeofSpecifier(DeclSpec &DS) { 3414 assert(Tok.is(tok::kw_typeof) && "Not a typeof specifier"); 3415 Token OpTok = Tok; 3416 SourceLocation StartLoc = ConsumeToken(); 3417 3418 const bool hasParens = Tok.is(tok::l_paren); 3419 3420 bool isCastExpr; 3421 TypeTy *CastTy; 3422 SourceRange CastRange; 3423 OwningExprResult Operand = ParseExprAfterTypeofSizeofAlignof(OpTok, 3424 isCastExpr, 3425 CastTy, 3426 CastRange); 3427 if (hasParens) 3428 DS.setTypeofParensRange(CastRange); 3429 3430 if (CastRange.getEnd().isInvalid()) 3431 // FIXME: Not accurate, the range gets one token more than it should. 3432 DS.SetRangeEnd(Tok.getLocation()); 3433 else 3434 DS.SetRangeEnd(CastRange.getEnd()); 3435 3436 if (isCastExpr) { 3437 if (!CastTy) { 3438 DS.SetTypeSpecError(); 3439 return; 3440 } 3441 3442 const char *PrevSpec = 0; 3443 unsigned DiagID; 3444 // Check for duplicate type specifiers (e.g. "int typeof(int)"). 3445 if (DS.SetTypeSpecType(DeclSpec::TST_typeofType, StartLoc, PrevSpec, 3446 DiagID, CastTy)) 3447 Diag(StartLoc, DiagID) << PrevSpec; 3448 return; 3449 } 3450 3451 // If we get here, the operand to the typeof was an expresion. 3452 if (Operand.isInvalid()) { 3453 DS.SetTypeSpecError(); 3454 return; 3455 } 3456 3457 const char *PrevSpec = 0; 3458 unsigned DiagID; 3459 // Check for duplicate type specifiers (e.g. "int typeof(int)"). 3460 if (DS.SetTypeSpecType(DeclSpec::TST_typeofExpr, StartLoc, PrevSpec, 3461 DiagID, Operand.release())) 3462 Diag(StartLoc, DiagID) << PrevSpec; 3463} 3464 3465 3466/// TryAltiVecVectorTokenOutOfLine - Out of line body that should only be called 3467/// from TryAltiVecVectorToken. 3468bool Parser::TryAltiVecVectorTokenOutOfLine() { 3469 Token Next = NextToken(); 3470 switch (Next.getKind()) { 3471 default: return false; 3472 case tok::kw_short: 3473 case tok::kw_long: 3474 case tok::kw_signed: 3475 case tok::kw_unsigned: 3476 case tok::kw_void: 3477 case tok::kw_char: 3478 case tok::kw_int: 3479 case tok::kw_float: 3480 case tok::kw_double: 3481 case tok::kw_bool: 3482 case tok::kw___pixel: 3483 Tok.setKind(tok::kw___vector); 3484 return true; 3485 case tok::identifier: 3486 if (Next.getIdentifierInfo() == Ident_pixel) { 3487 Tok.setKind(tok::kw___vector); 3488 return true; 3489 } 3490 return false; 3491 } 3492} 3493 3494bool Parser::TryAltiVecTokenOutOfLine(DeclSpec &DS, SourceLocation Loc, 3495 const char *&PrevSpec, unsigned &DiagID, 3496 bool &isInvalid) { 3497 if (Tok.getIdentifierInfo() == Ident_vector) { 3498 Token Next = NextToken(); 3499 switch (Next.getKind()) { 3500 case tok::kw_short: 3501 case tok::kw_long: 3502 case tok::kw_signed: 3503 case tok::kw_unsigned: 3504 case tok::kw_void: 3505 case tok::kw_char: 3506 case tok::kw_int: 3507 case tok::kw_float: 3508 case tok::kw_double: 3509 case tok::kw_bool: 3510 case tok::kw___pixel: 3511 isInvalid = DS.SetTypeAltiVecVector(true, Loc, PrevSpec, DiagID); 3512 return true; 3513 case tok::identifier: 3514 if (Next.getIdentifierInfo() == Ident_pixel) { 3515 isInvalid = DS.SetTypeAltiVecVector(true, Loc, PrevSpec, DiagID); 3516 return true; 3517 } 3518 break; 3519 default: 3520 break; 3521 } 3522 } else if ((Tok.getIdentifierInfo() == Ident_pixel) && 3523 DS.isTypeAltiVecVector()) { 3524 isInvalid = DS.SetTypeAltiVecPixel(true, Loc, PrevSpec, DiagID); 3525 return true; 3526 } 3527 return false; 3528} 3529 3530