ParseTentative.cpp revision 69d831645f429d3b806d2ae220aee45ca44f8c6c
15404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis//===--- ParseTentative.cpp - Ambiguity Resolution Parsing ----------------===// 25404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis// 35404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis// The LLVM Compiler Infrastructure 45404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis// 55404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis// This file is distributed under the University of Illinois Open Source 65404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis// License. See LICENSE.TXT for details. 75404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis// 85404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis//===----------------------------------------------------------------------===// 95404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis// 105404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis// This file implements the tentative parsing portions of the Parser 115404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis// interfaces, for ambiguity resolution. 125404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis// 135404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis//===----------------------------------------------------------------------===// 145404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 155404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis#include "clang/Parse/Parser.h" 16500d3297d2a21edeac4d46cbcbe21bc2352c2a28Chris Lattner#include "clang/Parse/ParseDiagnostic.h" 1719510856727e0e14a3696b2a72c35163bff2a71fJohn McCall#include "clang/Sema/ParsedTemplate.h" 185404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidisusing namespace clang; 195404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 205404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// isCXXDeclarationStatement - C++-specialized function that disambiguates 215404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// between a declaration or an expression statement, when parsing function 225404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// bodies. Returns true for declaration, false for expression. 235404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 245404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// declaration-statement: 255404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// block-declaration 265404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 275404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// block-declaration: 285404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// simple-declaration 295404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// asm-definition 305404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// namespace-alias-definition 315404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// using-declaration 325404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// using-directive 33511d7aba3b12853fdb88729a0313b80a60eab8adAnders Carlsson/// [C++0x] static_assert-declaration 345404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 355404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// asm-definition: 365404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 'asm' '(' string-literal ')' ';' 375404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 385404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// namespace-alias-definition: 395404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 'namespace' identifier = qualified-namespace-specifier ';' 405404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 415404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// using-declaration: 425404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 'using' typename[opt] '::'[opt] nested-name-specifier 435404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// unqualified-id ';' 445404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 'using' '::' unqualified-id ; 455404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 465404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// using-directive: 475404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 'using' 'namespace' '::'[opt] nested-name-specifier[opt] 485404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// namespace-name ';' 495404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 505404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidisbool Parser::isCXXDeclarationStatement() { 515404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis switch (Tok.getKind()) { 525404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // asm-definition 535404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis case tok::kw_asm: 545404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // namespace-alias-definition 555404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis case tok::kw_namespace: 565404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // using-declaration 575404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // using-directive 585404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis case tok::kw_using: 59511d7aba3b12853fdb88729a0313b80a60eab8adAnders Carlsson // static_assert-declaration 60bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt case tok::kw_static_assert: 61511d7aba3b12853fdb88729a0313b80a60eab8adAnders Carlsson return true; 625404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // simple-declaration 63bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt default: 645404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis return isCXXSimpleDeclaration(); 655404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis } 665404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis} 675404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 685404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// isCXXSimpleDeclaration - C++-specialized function that disambiguates 695404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// between a simple-declaration or an expression-statement. 705404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// If during the disambiguation process a parsing error is encountered, 715404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// the function returns true to let the declaration parsing code handle it. 725404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// Returns false if the statement is disambiguated as expression. 735404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 745404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// simple-declaration: 755404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// decl-specifier-seq init-declarator-list[opt] ';' 765404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 775404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidisbool Parser::isCXXSimpleDeclaration() { 785404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // C++ 6.8p1: 795404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // There is an ambiguity in the grammar involving expression-statements and 805404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // declarations: An expression-statement with a function-style explicit type 815404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // conversion (5.2.3) as its leftmost subexpression can be indistinguishable 825404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // from a declaration where the first declarator starts with a '('. In those 835404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // cases the statement is a declaration. [Note: To disambiguate, the whole 845404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // statement might have to be examined to determine if it is an 855404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // expression-statement or a declaration]. 865404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 875404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // C++ 6.8p3: 885404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // The disambiguation is purely syntactic; that is, the meaning of the names 895404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // occurring in such a statement, beyond whether they are type-names or not, 905404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // is not generally used in or changed by the disambiguation. Class 915404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // templates are instantiated as necessary to determine if a qualified name 925404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // is a type-name. Disambiguation precedes parsing, and a statement 935404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // disambiguated as a declaration may be an ill-formed declaration. 945404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 955404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // We don't have to parse all of the decl-specifier-seq part. There's only 965404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // an ambiguity if the first decl-specifier is 975404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // simple-type-specifier/typename-specifier followed by a '(', which may 985404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // indicate a function-style cast expression. 99b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis // isCXXDeclarationSpecifier will return TPResult::Ambiguous() only in such 100b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis // a case. 1015404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 102b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis TPResult TPR = isCXXDeclarationSpecifier(); 103b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis if (TPR != TPResult::Ambiguous()) 104b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis return TPR != TPResult::False(); // Returns true for TPResult::True() or 105b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis // TPResult::Error(). 1065404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 1075404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // FIXME: Add statistics about the number of ambiguous statements encountered 1085404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // and how they were resolved (number of declarations+number of expressions). 1095404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 1105404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // Ok, we have a simple-type-specifier/typename-specifier followed by a '('. 1115404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // We need tentative parsing... 1125404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 1135404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis TentativeParsingAction PA(*this); 1145404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis TPR = TryParseSimpleDeclaration(); 1155404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis PA.Revert(); 1165404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 1175404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // In case of an error, let the declaration parsing code handle it. 118b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis if (TPR == TPResult::Error()) 1195404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis return true; 1205404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 1215404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // Declarations take precedence over expressions. 122b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis if (TPR == TPResult::Ambiguous()) 123b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis TPR = TPResult::True(); 1245404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 125b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis assert(TPR == TPResult::True() || TPR == TPResult::False()); 126b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis return TPR == TPResult::True(); 1275404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis} 1285404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 1295404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// simple-declaration: 1305404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// decl-specifier-seq init-declarator-list[opt] ';' 1315404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 132b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios KyrtzidisParser::TPResult Parser::TryParseSimpleDeclaration() { 1335404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // We know that we have a simple-type-specifier/typename-specifier followed 1345404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // by a '('. 135b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis assert(isCXXDeclarationSpecifier() == TPResult::Ambiguous()); 1365404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 1375404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis if (Tok.is(tok::kw_typeof)) 1385404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis TryParseTypeofSpecifier(); 1399bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor else { 1405404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis ConsumeToken(); 1419bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor 1429bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor if (getLang().ObjC1 && Tok.is(tok::less)) 1439bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor TryParseProtocolQualifiers(); 1449bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor } 1459bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor 1465404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis assert(Tok.is(tok::l_paren) && "Expected '('"); 1475404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 148b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis TPResult TPR = TryParseInitDeclaratorList(); 149b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis if (TPR != TPResult::Ambiguous()) 1505404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis return TPR; 1515404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 1525404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis if (Tok.isNot(tok::semi)) 153b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis return TPResult::False(); 1545404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 155b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis return TPResult::Ambiguous(); 1565404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis} 1575404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 1581ee2c43bc0c281b60b29f1883e1e206cae28aed6Argyrios Kyrtzidis/// init-declarator-list: 1591ee2c43bc0c281b60b29f1883e1e206cae28aed6Argyrios Kyrtzidis/// init-declarator 1601ee2c43bc0c281b60b29f1883e1e206cae28aed6Argyrios Kyrtzidis/// init-declarator-list ',' init-declarator 1615404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 1621ee2c43bc0c281b60b29f1883e1e206cae28aed6Argyrios Kyrtzidis/// init-declarator: 1631ee2c43bc0c281b60b29f1883e1e206cae28aed6Argyrios Kyrtzidis/// declarator initializer[opt] 1641ee2c43bc0c281b60b29f1883e1e206cae28aed6Argyrios Kyrtzidis/// [GNU] declarator simple-asm-expr[opt] attributes[opt] initializer[opt] 1655404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 1665404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// initializer: 1675404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// '=' initializer-clause 1685404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// '(' expression-list ')' 1695404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 1705404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// initializer-clause: 1715404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// assignment-expression 1725404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// '{' initializer-list ','[opt] '}' 1735404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// '{' '}' 1745404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 175b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios KyrtzidisParser::TPResult Parser::TryParseInitDeclaratorList() { 1765404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis while (1) { 1775404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // declarator 178b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis TPResult TPR = TryParseDeclarator(false/*mayBeAbstract*/); 179b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis if (TPR != TPResult::Ambiguous()) 1805404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis return TPR; 1815404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 1821ee2c43bc0c281b60b29f1883e1e206cae28aed6Argyrios Kyrtzidis // [GNU] simple-asm-expr[opt] attributes[opt] 1831ee2c43bc0c281b60b29f1883e1e206cae28aed6Argyrios Kyrtzidis if (Tok.is(tok::kw_asm) || Tok.is(tok::kw___attribute)) 184b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis return TPResult::True(); 1851ee2c43bc0c281b60b29f1883e1e206cae28aed6Argyrios Kyrtzidis 1865404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // initializer[opt] 1875404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis if (Tok.is(tok::l_paren)) { 1885404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // Parse through the parens. 1895404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis ConsumeParen(); 1905404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis if (!SkipUntil(tok::r_paren)) 191b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis return TPResult::Error(); 192f459beb2fa7c5441eae4b1f5311f6a2ea60f6b00Fariborz Jahanian } else if (Tok.is(tok::equal) || isTokIdentifier_in()) { 19306b7080b04ba799379469c03471558e4222921ceDouglas Gregor // MSVC and g++ won't examine the rest of declarators if '=' is 19406b7080b04ba799379469c03471558e4222921ceDouglas Gregor // encountered; they just conclude that we have a declaration. 19506b7080b04ba799379469c03471558e4222921ceDouglas Gregor // EDG parses the initializer completely, which is the proper behavior 19606b7080b04ba799379469c03471558e4222921ceDouglas Gregor // for this case. 1975404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // 19806b7080b04ba799379469c03471558e4222921ceDouglas Gregor // At present, Clang follows MSVC and g++, since the parser does not have 19906b7080b04ba799379469c03471558e4222921ceDouglas Gregor // the ability to parse an expression fully without recording the 20006b7080b04ba799379469c03471558e4222921ceDouglas Gregor // results of that parse. 201f459beb2fa7c5441eae4b1f5311f6a2ea60f6b00Fariborz Jahanian // Also allow 'in' after on objective-c declaration as in: 202f459beb2fa7c5441eae4b1f5311f6a2ea60f6b00Fariborz Jahanian // for (int (^b)(void) in array). Ideally this should be done in the 203f459beb2fa7c5441eae4b1f5311f6a2ea60f6b00Fariborz Jahanian // context of parsing for-init-statement of a foreach statement only. But, 204f459beb2fa7c5441eae4b1f5311f6a2ea60f6b00Fariborz Jahanian // in any other context 'in' is invalid after a declaration and parser 205f459beb2fa7c5441eae4b1f5311f6a2ea60f6b00Fariborz Jahanian // issues the error regardless of outcome of this decision. 206f459beb2fa7c5441eae4b1f5311f6a2ea60f6b00Fariborz Jahanian // FIXME. Change if above assumption does not hold. 20706b7080b04ba799379469c03471558e4222921ceDouglas Gregor return TPResult::True(); 2085404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis } 2095404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 2105404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis if (Tok.isNot(tok::comma)) 2115404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis break; 2125404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis ConsumeToken(); // the comma. 2135404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis } 2145404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 215b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis return TPResult::Ambiguous(); 2165404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis} 2175404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 218a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis/// isCXXConditionDeclaration - Disambiguates between a declaration or an 219a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis/// expression for a condition of a if/switch/while/for statement. 220a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis/// If during the disambiguation process a parsing error is encountered, 221a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis/// the function returns true to let the declaration parsing code handle it. 222a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis/// 223a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis/// condition: 224a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis/// expression 225a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis/// type-specifier-seq declarator '=' assignment-expression 226a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis/// [GNU] type-specifier-seq declarator simple-asm-expr[opt] attributes[opt] 227a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis/// '=' assignment-expression 228a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis/// 229a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidisbool Parser::isCXXConditionDeclaration() { 230b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis TPResult TPR = isCXXDeclarationSpecifier(); 231b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis if (TPR != TPResult::Ambiguous()) 232b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis return TPR != TPResult::False(); // Returns true for TPResult::True() or 233b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis // TPResult::Error(). 234a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis 235a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis // FIXME: Add statistics about the number of ambiguous statements encountered 236a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis // and how they were resolved (number of declarations+number of expressions). 237a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis 238a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis // Ok, we have a simple-type-specifier/typename-specifier followed by a '('. 239a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis // We need tentative parsing... 240a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis 241a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis TentativeParsingAction PA(*this); 242a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis 243a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis // type-specifier-seq 244a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis if (Tok.is(tok::kw_typeof)) 245a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis TryParseTypeofSpecifier(); 2469bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor else { 247a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis ConsumeToken(); 2489bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor 2499bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor if (getLang().ObjC1 && Tok.is(tok::less)) 2509bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor TryParseProtocolQualifiers(); 2519bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor } 252a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis assert(Tok.is(tok::l_paren) && "Expected '('"); 253a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis 254a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis // declarator 255a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis TPR = TryParseDeclarator(false/*mayBeAbstract*/); 256a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis 257a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis // In case of an error, let the declaration parsing code handle it. 258b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis if (TPR == TPResult::Error()) 259b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis TPR = TPResult::True(); 260a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis 261b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis if (TPR == TPResult::Ambiguous()) { 262a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis // '=' 263a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis // [GNU] simple-asm-expr[opt] attributes[opt] 264a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis if (Tok.is(tok::equal) || 265a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis Tok.is(tok::kw_asm) || Tok.is(tok::kw___attribute)) 266b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis TPR = TPResult::True(); 267a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis else 268b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis TPR = TPResult::False(); 269a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis } 270a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis 271ca35baa788ccba7a213365b9d64d6b2f7bdb9afeArgyrios Kyrtzidis PA.Revert(); 272ca35baa788ccba7a213365b9d64d6b2f7bdb9afeArgyrios Kyrtzidis 273b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis assert(TPR == TPResult::True() || TPR == TPResult::False()); 274b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis return TPR == TPResult::True(); 275a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis} 276a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis 2771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// \brief Determine whether the next set of tokens contains a type-id. 2788b642592a35167a3780074e78674e0bece87c40cDouglas Gregor /// 2798b642592a35167a3780074e78674e0bece87c40cDouglas Gregor /// The context parameter states what context we're parsing right 2808b642592a35167a3780074e78674e0bece87c40cDouglas Gregor /// now, which affects how this routine copes with the token 2818b642592a35167a3780074e78674e0bece87c40cDouglas Gregor /// following the type-id. If the context is TypeIdInParens, we have 2828b642592a35167a3780074e78674e0bece87c40cDouglas Gregor /// already parsed the '(' and we will cease lookahead when we hit 2838b642592a35167a3780074e78674e0bece87c40cDouglas Gregor /// the corresponding ')'. If the context is 2848b642592a35167a3780074e78674e0bece87c40cDouglas Gregor /// TypeIdAsTemplateArgument, we've already parsed the '<' or ',' 2858b642592a35167a3780074e78674e0bece87c40cDouglas Gregor /// before this template argument, and will cease lookahead when we 2868b642592a35167a3780074e78674e0bece87c40cDouglas Gregor /// hit a '>', '>>' (in C++0x), or ','. Returns true for a type-id 2878b642592a35167a3780074e78674e0bece87c40cDouglas Gregor /// and false for an expression. If during the disambiguation 2888b642592a35167a3780074e78674e0bece87c40cDouglas Gregor /// process a parsing error is encountered, the function returns 2898b642592a35167a3780074e78674e0bece87c40cDouglas Gregor /// true to let the declaration parsing code handle it. 2908b642592a35167a3780074e78674e0bece87c40cDouglas Gregor /// 2918b642592a35167a3780074e78674e0bece87c40cDouglas Gregor /// type-id: 2928b642592a35167a3780074e78674e0bece87c40cDouglas Gregor /// type-specifier-seq abstract-declarator[opt] 2938b642592a35167a3780074e78674e0bece87c40cDouglas Gregor /// 294f58f45e6d76792df8c643ce1c6d364dce5db4826Argyrios Kyrtzidisbool Parser::isCXXTypeId(TentativeCXXTypeIdContext Context, bool &isAmbiguous) { 2951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 296f58f45e6d76792df8c643ce1c6d364dce5db4826Argyrios Kyrtzidis isAmbiguous = false; 297d3dbbb68b1050da2f58d4bea6b23016f451968c9Argyrios Kyrtzidis 298d3dbbb68b1050da2f58d4bea6b23016f451968c9Argyrios Kyrtzidis // C++ 8.2p2: 299d3dbbb68b1050da2f58d4bea6b23016f451968c9Argyrios Kyrtzidis // The ambiguity arising from the similarity between a function-style cast and 300d3dbbb68b1050da2f58d4bea6b23016f451968c9Argyrios Kyrtzidis // a type-id can occur in different contexts. The ambiguity appears as a 301d3dbbb68b1050da2f58d4bea6b23016f451968c9Argyrios Kyrtzidis // choice between a function-style cast expression and a declaration of a 302d3dbbb68b1050da2f58d4bea6b23016f451968c9Argyrios Kyrtzidis // type. The resolution is that any construct that could possibly be a type-id 303d3dbbb68b1050da2f58d4bea6b23016f451968c9Argyrios Kyrtzidis // in its syntactic context shall be considered a type-id. 304d3dbbb68b1050da2f58d4bea6b23016f451968c9Argyrios Kyrtzidis 30578c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis TPResult TPR = isCXXDeclarationSpecifier(); 30678c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis if (TPR != TPResult::Ambiguous()) 30778c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis return TPR != TPResult::False(); // Returns true for TPResult::True() or 30878c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis // TPResult::Error(). 30978c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis 31078c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis // FIXME: Add statistics about the number of ambiguous statements encountered 31178c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis // and how they were resolved (number of declarations+number of expressions). 31278c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis 31378c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis // Ok, we have a simple-type-specifier/typename-specifier followed by a '('. 31478c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis // We need tentative parsing... 31578c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis 31678c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis TentativeParsingAction PA(*this); 31778c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis 31878c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis // type-specifier-seq 31978c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis if (Tok.is(tok::kw_typeof)) 32078c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis TryParseTypeofSpecifier(); 3219bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor else { 32278c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis ConsumeToken(); 3239bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor 3249bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor if (getLang().ObjC1 && Tok.is(tok::less)) 3259bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor TryParseProtocolQualifiers(); 3269bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor } 3279bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor 32878c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis assert(Tok.is(tok::l_paren) && "Expected '('"); 32978c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis 33078c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis // declarator 33178c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis TPR = TryParseDeclarator(true/*mayBeAbstract*/, false/*mayHaveIdentifier*/); 33278c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis 33378c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis // In case of an error, let the declaration parsing code handle it. 33478c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis if (TPR == TPResult::Error()) 33578c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis TPR = TPResult::True(); 33678c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis 33778c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis if (TPR == TPResult::Ambiguous()) { 33878c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis // We are supposed to be inside parens, so if after the abstract declarator 33978c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis // we encounter a ')' this is a type-id, otherwise it's an expression. 340f58f45e6d76792df8c643ce1c6d364dce5db4826Argyrios Kyrtzidis if (Context == TypeIdInParens && Tok.is(tok::r_paren)) { 3418b642592a35167a3780074e78674e0bece87c40cDouglas Gregor TPR = TPResult::True(); 342f58f45e6d76792df8c643ce1c6d364dce5db4826Argyrios Kyrtzidis isAmbiguous = true; 343f58f45e6d76792df8c643ce1c6d364dce5db4826Argyrios Kyrtzidis 3448b642592a35167a3780074e78674e0bece87c40cDouglas Gregor // We are supposed to be inside a template argument, so if after 3458b642592a35167a3780074e78674e0bece87c40cDouglas Gregor // the abstract declarator we encounter a '>', '>>' (in C++0x), or 3468b642592a35167a3780074e78674e0bece87c40cDouglas Gregor // ',', this is a type-id. Otherwise, it's an expression. 347f58f45e6d76792df8c643ce1c6d364dce5db4826Argyrios Kyrtzidis } else if (Context == TypeIdAsTemplateArgument && 348f58f45e6d76792df8c643ce1c6d364dce5db4826Argyrios Kyrtzidis (Tok.is(tok::greater) || Tok.is(tok::comma) || 349f58f45e6d76792df8c643ce1c6d364dce5db4826Argyrios Kyrtzidis (getLang().CPlusPlus0x && Tok.is(tok::greatergreater)))) { 35078c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis TPR = TPResult::True(); 351f58f45e6d76792df8c643ce1c6d364dce5db4826Argyrios Kyrtzidis isAmbiguous = true; 352f58f45e6d76792df8c643ce1c6d364dce5db4826Argyrios Kyrtzidis 353f58f45e6d76792df8c643ce1c6d364dce5db4826Argyrios Kyrtzidis } else 35478c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis TPR = TPResult::False(); 35578c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis } 35678c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis 35778c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis PA.Revert(); 35878c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis 35978c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis assert(TPR == TPResult::True() || TPR == TPResult::False()); 36078c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis return TPR == TPResult::True(); 36178c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis} 36278c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis 363bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// isCXX0XAttributeSpecifier - returns true if this is a C++0x 364bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// attribute-specifier. By default, unless in Obj-C++, only a cursory check is 365bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// performed that will simply return true if a [[ is seen. Currently C++ has no 366bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// syntactical ambiguities from this check, but it may inhibit error recovery. 367bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// If CheckClosing is true, a check is made for closing ]] brackets. 368bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// 369bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// If given, After is set to the token after the attribute-specifier so that 370bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// appropriate parsing decisions can be made; it is left untouched if false is 371bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// returned. 372bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// 373bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// FIXME: If an error is in the closing ]] brackets, the program assumes 374bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// the absence of an attribute-specifier, which can cause very yucky errors 375bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// to occur. 376bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// 377bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// [C++0x] attribute-specifier: 378bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// '[' '[' attribute-list ']' ']' 379bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// 380bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// [C++0x] attribute-list: 381bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// attribute[opt] 382bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// attribute-list ',' attribute[opt] 383bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// 384bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// [C++0x] attribute: 385bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// attribute-token attribute-argument-clause[opt] 386bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// 387bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// [C++0x] attribute-token: 388bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// identifier 389bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// attribute-scoped-token 390bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// 391bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// [C++0x] attribute-scoped-token: 392bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// attribute-namespace '::' identifier 393bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// 394bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// [C++0x] attribute-namespace: 395bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// identifier 396bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// 397bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// [C++0x] attribute-argument-clause: 398bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// '(' balanced-token-seq ')' 399bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// 400bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// [C++0x] balanced-token-seq: 401bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// balanced-token 402bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// balanced-token-seq balanced-token 403bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// 404bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// [C++0x] balanced-token: 405bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// '(' balanced-token-seq ')' 406bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// '[' balanced-token-seq ']' 407bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// '{' balanced-token-seq '}' 408bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// any token but '(', ')', '[', ']', '{', or '}' 409bbd37c62e34db3f5a95c899723484a76c71d7757Sean Huntbool Parser::isCXX0XAttributeSpecifier (bool CheckClosing, 410bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt tok::TokenKind *After) { 411bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt if (Tok.isNot(tok::l_square) || NextToken().isNot(tok::l_square)) 412bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt return false; 413bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt 414bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt // No tentative parsing if we don't need to look for ]] 415bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt if (!CheckClosing && !getLang().ObjC1) 416bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt return true; 417bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt 418bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt struct TentativeReverter { 419bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt TentativeParsingAction PA; 420bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt 421bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt TentativeReverter (Parser& P) 422bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt : PA(P) 423bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt {} 424bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt ~TentativeReverter () { 425bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt PA.Revert(); 426bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt } 427bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt } R(*this); 428bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt 429bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt // Opening brackets were checked for above. 430bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt ConsumeBracket(); 431bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt ConsumeBracket(); 432bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt 433bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt // SkipUntil will handle balanced tokens, which are guaranteed in attributes. 434bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt SkipUntil(tok::r_square, false); 435bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt 436bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt if (Tok.isNot(tok::r_square)) 437bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt return false; 438bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt ConsumeBracket(); 439bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt 440bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt if (After) 441bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt *After = Tok.getKind(); 442bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt 443bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt return true; 444bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt} 445bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt 4465404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// declarator: 4475404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// direct-declarator 4485404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// ptr-operator declarator 4495404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 4505404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// direct-declarator: 4515404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// declarator-id 4525404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// direct-declarator '(' parameter-declaration-clause ')' 4535404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// cv-qualifier-seq[opt] exception-specification[opt] 4545404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// direct-declarator '[' constant-expression[opt] ']' 4555404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// '(' declarator ')' 4561ee2c43bc0c281b60b29f1883e1e206cae28aed6Argyrios Kyrtzidis/// [GNU] '(' attributes declarator ')' 4575404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 4585404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// abstract-declarator: 4595404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// ptr-operator abstract-declarator[opt] 4605404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// direct-abstract-declarator 461a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor/// ... 4625404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 4635404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// direct-abstract-declarator: 4645404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// direct-abstract-declarator[opt] 4655404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// '(' parameter-declaration-clause ')' cv-qualifier-seq[opt] 4665404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// exception-specification[opt] 4675404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// direct-abstract-declarator[opt] '[' constant-expression[opt] ']' 4685404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// '(' abstract-declarator ')' 4695404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 4705404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// ptr-operator: 4715404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// '*' cv-qualifier-seq[opt] 4725404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// '&' 4735404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// [C++0x] '&&' [TODO] 4748edef7c31d27fc9d5d163660702a8a7730a0d19fSebastian Redl/// '::'[opt] nested-name-specifier '*' cv-qualifier-seq[opt] 4755404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 4765404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// cv-qualifier-seq: 4775404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// cv-qualifier cv-qualifier-seq[opt] 4785404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 4795404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// cv-qualifier: 4805404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 'const' 4815404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 'volatile' 4825404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 4835404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// declarator-id: 484a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor/// '...'[opt] id-expression 4855404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 4865404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// id-expression: 4875404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// unqualified-id 4885404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// qualified-id [TODO] 4895404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 4905404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// unqualified-id: 4915404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// identifier 4925404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// operator-function-id [TODO] 4935404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// conversion-function-id [TODO] 4945404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// '~' class-name [TODO] 4955404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// template-id [TODO] 4965404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 49778c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios KyrtzidisParser::TPResult Parser::TryParseDeclarator(bool mayBeAbstract, 49878c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis bool mayHaveIdentifier) { 4995404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // declarator: 5005404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // direct-declarator 5015404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // ptr-operator declarator 5025404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 5035404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis while (1) { 5048edef7c31d27fc9d5d163660702a8a7730a0d19fSebastian Redl if (Tok.is(tok::coloncolon) || Tok.is(tok::identifier)) 5059ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall if (TryAnnotateCXXScopeToken(true)) 5069ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return TPResult::Error(); 5078edef7c31d27fc9d5d163660702a8a7730a0d19fSebastian Redl 5089af5500f3f132f9a2f9abbe82113a7c7bb751472Chris Lattner if (Tok.is(tok::star) || Tok.is(tok::amp) || Tok.is(tok::caret) || 50969d831645f429d3b806d2ae220aee45ca44f8c6cDouglas Gregor Tok.is(tok::ampamp) || 5108edef7c31d27fc9d5d163660702a8a7730a0d19fSebastian Redl (Tok.is(tok::annot_cxxscope) && NextToken().is(tok::star))) { 5115404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // ptr-operator 5125404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis ConsumeToken(); 5135404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis while (Tok.is(tok::kw_const) || 5145404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis Tok.is(tok::kw_volatile) || 5159af5500f3f132f9a2f9abbe82113a7c7bb751472Chris Lattner Tok.is(tok::kw_restrict)) 5165404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis ConsumeToken(); 5175404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis } else { 5185404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis break; 5195404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis } 5205404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis } 5215404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 5225404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // direct-declarator: 5235404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // direct-abstract-declarator: 524a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor if (Tok.is(tok::ellipsis)) 525a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor ConsumeToken(); 526a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor 5271e054213f8416a48866105216ad4a45f1e7c24deArgyrios Kyrtzidis if ((Tok.is(tok::identifier) || 5281e054213f8416a48866105216ad4a45f1e7c24deArgyrios Kyrtzidis (Tok.is(tok::annot_cxxscope) && NextToken().is(tok::identifier))) && 5291e054213f8416a48866105216ad4a45f1e7c24deArgyrios Kyrtzidis mayHaveIdentifier) { 5305404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // declarator-id 5311e054213f8416a48866105216ad4a45f1e7c24deArgyrios Kyrtzidis if (Tok.is(tok::annot_cxxscope)) 5321e054213f8416a48866105216ad4a45f1e7c24deArgyrios Kyrtzidis ConsumeToken(); 5335404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis ConsumeToken(); 5345404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis } else if (Tok.is(tok::l_paren)) { 535d3616a8d0b1506966cb669c19dbfc91bf42c810aArgyrios Kyrtzidis ConsumeParen(); 536d3616a8d0b1506966cb669c19dbfc91bf42c810aArgyrios Kyrtzidis if (mayBeAbstract && 537d3616a8d0b1506966cb669c19dbfc91bf42c810aArgyrios Kyrtzidis (Tok.is(tok::r_paren) || // 'int()' is a function. 538d3616a8d0b1506966cb669c19dbfc91bf42c810aArgyrios Kyrtzidis Tok.is(tok::ellipsis) || // 'int(...)' is a function. 539d3616a8d0b1506966cb669c19dbfc91bf42c810aArgyrios Kyrtzidis isDeclarationSpecifier())) { // 'int(int)' is a function. 5405404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // '(' parameter-declaration-clause ')' cv-qualifier-seq[opt] 5415404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // exception-specification[opt] 542b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis TPResult TPR = TryParseFunctionDeclarator(); 543b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis if (TPR != TPResult::Ambiguous()) 5445404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis return TPR; 5455404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis } else { 5465404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // '(' declarator ')' 5471ee2c43bc0c281b60b29f1883e1e206cae28aed6Argyrios Kyrtzidis // '(' attributes declarator ')' 5485404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // '(' abstract-declarator ')' 5496229c8e7ecccbc6b661df0b4399eb205587c61b4Chris Lattner if (Tok.is(tok::kw___attribute) || 5506229c8e7ecccbc6b661df0b4399eb205587c61b4Chris Lattner Tok.is(tok::kw___declspec) || 5516229c8e7ecccbc6b661df0b4399eb205587c61b4Chris Lattner Tok.is(tok::kw___cdecl) || 5526229c8e7ecccbc6b661df0b4399eb205587c61b4Chris Lattner Tok.is(tok::kw___stdcall) || 5536229c8e7ecccbc6b661df0b4399eb205587c61b4Chris Lattner Tok.is(tok::kw___fastcall) || 5546229c8e7ecccbc6b661df0b4399eb205587c61b4Chris Lattner Tok.is(tok::kw___thiscall)) 555b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis return TPResult::True(); // attributes indicate declaration 55678c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis TPResult TPR = TryParseDeclarator(mayBeAbstract, mayHaveIdentifier); 557b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis if (TPR != TPResult::Ambiguous()) 5585404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis return TPR; 5595404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis if (Tok.isNot(tok::r_paren)) 560b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis return TPResult::False(); 5615404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis ConsumeParen(); 5625404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis } 5635404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis } else if (!mayBeAbstract) { 564b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis return TPResult::False(); 5655404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis } 5665404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 5675404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis while (1) { 568b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis TPResult TPR(TPResult::Ambiguous()); 5695404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 570a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // abstract-declarator: ... 571a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor if (Tok.is(tok::ellipsis)) 572a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor ConsumeToken(); 573a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor 5745404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis if (Tok.is(tok::l_paren)) { 575d3616a8d0b1506966cb669c19dbfc91bf42c810aArgyrios Kyrtzidis // Check whether we have a function declarator or a possible ctor-style 576d3616a8d0b1506966cb669c19dbfc91bf42c810aArgyrios Kyrtzidis // initializer that follows the declarator. Note that ctor-style 577d3616a8d0b1506966cb669c19dbfc91bf42c810aArgyrios Kyrtzidis // initializers are not possible in contexts where abstract declarators 578d3616a8d0b1506966cb669c19dbfc91bf42c810aArgyrios Kyrtzidis // are allowed. 579e75d849d9141d8e47d05a91b7b5c04194854e47aArgyrios Kyrtzidis if (!mayBeAbstract && !isCXXFunctionDeclarator(false/*warnIfAmbiguous*/)) 580d3616a8d0b1506966cb669c19dbfc91bf42c810aArgyrios Kyrtzidis break; 581d3616a8d0b1506966cb669c19dbfc91bf42c810aArgyrios Kyrtzidis 5825404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // direct-declarator '(' parameter-declaration-clause ')' 5835404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // cv-qualifier-seq[opt] exception-specification[opt] 584d3616a8d0b1506966cb669c19dbfc91bf42c810aArgyrios Kyrtzidis ConsumeParen(); 5855404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis TPR = TryParseFunctionDeclarator(); 5865404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis } else if (Tok.is(tok::l_square)) { 5875404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // direct-declarator '[' constant-expression[opt] ']' 5885404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // direct-abstract-declarator[opt] '[' constant-expression[opt] ']' 5895404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis TPR = TryParseBracketDeclarator(); 5905404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis } else { 5915404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis break; 5925404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis } 5935404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 594b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis if (TPR != TPResult::Ambiguous()) 5955404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis return TPR; 5965404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis } 5975404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 598b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis return TPResult::Ambiguous(); 5995404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis} 6005404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 601a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas GregorParser::TPResult 602a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas GregorParser::isExpressionOrTypeSpecifierSimple(tok::TokenKind Kind) { 603a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor switch (Kind) { 604a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor // Obviously starts an expression. 605a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::numeric_constant: 606a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::char_constant: 607a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::string_literal: 608a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::wide_string_literal: 609a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::l_square: 610a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::l_paren: 611a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::amp: 61269d831645f429d3b806d2ae220aee45ca44f8c6cDouglas Gregor case tok::ampamp: 613a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::star: 614a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::plus: 615a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::plusplus: 616a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::minus: 617a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::minusminus: 618a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::tilde: 619a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::exclaim: 620a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw_sizeof: 621a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw___func__: 622a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw_const_cast: 623a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw_delete: 624a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw_dynamic_cast: 625a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw_false: 626a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw_new: 627a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw_operator: 628a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw_reinterpret_cast: 629a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw_static_cast: 630a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw_this: 631a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw_throw: 632a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw_true: 633a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw_typeid: 634a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw_alignof: 635a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw_noexcept: 636a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw_nullptr: 637a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw___null: 638a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw___alignof: 639a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw___builtin_choose_expr: 640a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw___builtin_offsetof: 641a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw___builtin_types_compatible_p: 642a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw___builtin_va_arg: 643a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw___imag: 644a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw___real: 645a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw___FUNCTION__: 646a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw___PRETTY_FUNCTION__: 647a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw___has_nothrow_assign: 648a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw___has_nothrow_copy: 649a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw___has_nothrow_constructor: 650a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw___has_trivial_assign: 651a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw___has_trivial_copy: 652a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw___has_trivial_constructor: 653a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw___has_trivial_destructor: 654a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw___has_virtual_destructor: 655a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw___is_abstract: 656a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw___is_base_of: 657a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw___is_class: 658a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw___is_empty: 659a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw___is_enum: 660a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw___is_pod: 661a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw___is_polymorphic: 662a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw___is_union: 663a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw___is_literal: 664a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw___uuidof: 665a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor return TPResult::True(); 666a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor 667a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor // Obviously starts a type-specifier-seq: 668a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw_char: 669a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw_const: 670a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw_double: 671a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw_enum: 672a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw_float: 673a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw_int: 674a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw_long: 675a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw_restrict: 676a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw_short: 677a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw_signed: 678a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw_struct: 679a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw_union: 680a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw_unsigned: 681a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw_void: 682a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw_volatile: 683a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw__Bool: 684a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw__Complex: 685a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw_class: 686a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw_typename: 687a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw_wchar_t: 688a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw_char16_t: 689a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw_char32_t: 690a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw_decltype: 691a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw_thread_local: 692a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw__Decimal32: 693a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw__Decimal64: 694a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw__Decimal128: 695a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw___thread: 696a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw_typeof: 697a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw___cdecl: 698a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw___stdcall: 699a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw___fastcall: 700a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw___thiscall: 701a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw___vector: 702a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor case tok::kw___pixel: 703a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor return TPResult::False(); 704a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor 705a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor default: 706a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor break; 707a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor } 708a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor 709a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor return TPResult::Ambiguous(); 710a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor} 711a61b3e7443056f8d05b24ca4cbea90fe66235d6bDouglas Gregor 712b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis/// isCXXDeclarationSpecifier - Returns TPResult::True() if it is a declaration 713b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis/// specifier, TPResult::False() if it is not, TPResult::Ambiguous() if it could 714b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis/// be either a decl-specifier or a function-style cast, and TPResult::Error() 715b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis/// if a parsing error was found and reported. 7165404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 7175404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// decl-specifier: 7185404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// storage-class-specifier 7195404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// type-specifier 7205404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// function-specifier 7215404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 'friend' 7225404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 'typedef' 7232ac67239b4ab81c439ffcc56367574c869f87daeSebastian Redl/// [C++0x] 'constexpr' 7245404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// [GNU] attributes declaration-specifiers[opt] 7255404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 7265404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// storage-class-specifier: 7275404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 'register' 7285404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 'static' 7295404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 'extern' 7305404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 'mutable' 7315404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 'auto' 7325404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// [GNU] '__thread' 7335404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 7345404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// function-specifier: 7355404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 'inline' 7365404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 'virtual' 7375404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 'explicit' 7385404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 7395404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// typedef-name: 7405404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// identifier 7415404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 7425404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// type-specifier: 7435404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// simple-type-specifier 7445404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// class-specifier 7455404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// enum-specifier 7465404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// elaborated-type-specifier 747d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor/// typename-specifier 7485404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// cv-qualifier 7495404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 7505404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// simple-type-specifier: 751d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor/// '::'[opt] nested-name-specifier[opt] type-name 7525404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// '::'[opt] nested-name-specifier 'template' 7535404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// simple-template-id [TODO] 7545404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 'char' 7555404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 'wchar_t' 7565404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 'bool' 7575404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 'short' 7585404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 'int' 7595404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 'long' 7605404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 'signed' 7615404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 'unsigned' 7625404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 'float' 7635404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 'double' 7645404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 'void' 7655404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// [GNU] typeof-specifier 7665404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// [GNU] '_Complex' 7675404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// [C++0x] 'auto' [TODO] 7686fd634f4ac59f5923cffadadb99d19f23c18707aAnders Carlsson/// [C++0x] 'decltype' ( expression ) 7695404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 7705404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// type-name: 7715404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// class-name 7725404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// enum-name 7735404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// typedef-name 7745404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 7755404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// elaborated-type-specifier: 7765404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// class-key '::'[opt] nested-name-specifier[opt] identifier 7775404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// class-key '::'[opt] nested-name-specifier[opt] 'template'[opt] 7785404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// simple-template-id 7795404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 'enum' '::'[opt] nested-name-specifier[opt] identifier 7805404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 7815404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// enum-name: 7825404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// identifier 7835404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 7845404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// enum-specifier: 7855404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 'enum' identifier[opt] '{' enumerator-list[opt] '}' 7865404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 'enum' identifier[opt] '{' enumerator-list ',' '}' 7875404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 7885404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// class-specifier: 7895404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// class-head '{' member-specification[opt] '}' 7905404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 7915404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// class-head: 7925404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// class-key identifier[opt] base-clause[opt] 7935404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// class-key nested-name-specifier identifier base-clause[opt] 7945404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// class-key nested-name-specifier[opt] simple-template-id 7955404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// base-clause[opt] 7965404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 7975404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// class-key: 7985404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 'class' 7995404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 'struct' 8005404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 'union' 8015404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 8025404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// cv-qualifier: 8035404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 'const' 8045404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 'volatile' 8055404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// [GNU] restrict 8065404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 807b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios KyrtzidisParser::TPResult Parser::isCXXDeclarationSpecifier() { 8085404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis switch (Tok.getKind()) { 809e584926b8602c26d442f34090dfd5293695f4af5Chris Lattner case tok::identifier: // foo::bar 81082287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson // Check for need to substitute AltiVec __vector keyword 81182287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson // for "vector" identifier. 81282287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson if (TryAltiVecVectorToken()) 81382287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson return TPResult::True(); 81482287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson // Fall through. 815d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor case tok::kw_typename: // typename T::type 816e584926b8602c26d442f34090dfd5293695f4af5Chris Lattner // Annotate typenames and C++ scope specifiers. If we get one, just 817e584926b8602c26d442f34090dfd5293695f4af5Chris Lattner // recurse to handle whatever we get. 818e584926b8602c26d442f34090dfd5293695f4af5Chris Lattner if (TryAnnotateTypeOrScopeToken()) 8199ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return TPResult::Error(); 8209ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall if (Tok.is(tok::identifier)) 8219ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return TPResult::False(); 8229ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return isCXXDeclarationSpecifier(); 823e584926b8602c26d442f34090dfd5293695f4af5Chris Lattner 8242ee9b408a5cf3055fd974f01025b80fb3fd5f7e6Chris Lattner case tok::coloncolon: { // ::foo::bar 8252ee9b408a5cf3055fd974f01025b80fb3fd5f7e6Chris Lattner const Token &Next = NextToken(); 8262ee9b408a5cf3055fd974f01025b80fb3fd5f7e6Chris Lattner if (Next.is(tok::kw_new) || // ::new 8272ee9b408a5cf3055fd974f01025b80fb3fd5f7e6Chris Lattner Next.is(tok::kw_delete)) // ::delete 828ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall return TPResult::False(); 8291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 830e584926b8602c26d442f34090dfd5293695f4af5Chris Lattner // Annotate typenames and C++ scope specifiers. If we get one, just 831e584926b8602c26d442f34090dfd5293695f4af5Chris Lattner // recurse to handle whatever we get. 832e584926b8602c26d442f34090dfd5293695f4af5Chris Lattner if (TryAnnotateTypeOrScopeToken()) 8339ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return TPResult::Error(); 8349ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return isCXXDeclarationSpecifier(); 8352ee9b408a5cf3055fd974f01025b80fb3fd5f7e6Chris Lattner } 8362ee9b408a5cf3055fd974f01025b80fb3fd5f7e6Chris Lattner 8375404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // decl-specifier: 8385404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // storage-class-specifier 8395404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // type-specifier 8405404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // function-specifier 8415404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // 'friend' 8425404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // 'typedef' 8432ac67239b4ab81c439ffcc56367574c869f87daeSebastian Redl // 'constexpr' 8445404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis case tok::kw_friend: 8455404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis case tok::kw_typedef: 8462ac67239b4ab81c439ffcc56367574c869f87daeSebastian Redl case tok::kw_constexpr: 8475404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // storage-class-specifier 8485404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis case tok::kw_register: 8495404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis case tok::kw_static: 8505404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis case tok::kw_extern: 8515404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis case tok::kw_mutable: 8525404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis case tok::kw_auto: 8535404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis case tok::kw___thread: 8545404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // function-specifier 8555404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis case tok::kw_inline: 8565404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis case tok::kw_virtual: 8575404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis case tok::kw_explicit: 8585404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 8595404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // type-specifier: 8605404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // simple-type-specifier 8615404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // class-specifier 8625404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // enum-specifier 8635404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // elaborated-type-specifier 8645404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // typename-specifier 8655404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // cv-qualifier 8665404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 8675404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // class-specifier 8685404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // elaborated-type-specifier 8695404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis case tok::kw_class: 8705404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis case tok::kw_struct: 8715404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis case tok::kw_union: 8725404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // enum-specifier 8735404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis case tok::kw_enum: 8745404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // cv-qualifier 8755404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis case tok::kw_const: 8765404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis case tok::kw_volatile: 8775404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 8785404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // GNU 8795404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis case tok::kw_restrict: 8805404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis case tok::kw__Complex: 8815404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis case tok::kw___attribute: 882b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis return TPResult::True(); 8831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8847ec5658f92fd5b65f682b6e942b95210426fc6e2Steve Naroff // Microsoft 88547f5209a80c7c75592e87eb296d2b51e03208ae0Steve Naroff case tok::kw___declspec: 8867ec5658f92fd5b65f682b6e942b95210426fc6e2Steve Naroff case tok::kw___cdecl: 8877ec5658f92fd5b65f682b6e942b95210426fc6e2Steve Naroff case tok::kw___stdcall: 8887ec5658f92fd5b65f682b6e942b95210426fc6e2Steve Naroff case tok::kw___fastcall: 889f813a2c03fcb05381b3252010435f557eb6b3cdeDouglas Gregor case tok::kw___thiscall: 890290eeb0ec2b6b91f3621e05ef541deb257fbea73Eli Friedman case tok::kw___w64: 891290eeb0ec2b6b91f3621e05ef541deb257fbea73Eli Friedman case tok::kw___ptr64: 892290eeb0ec2b6b91f3621e05ef541deb257fbea73Eli Friedman case tok::kw___forceinline: 893290eeb0ec2b6b91f3621e05ef541deb257fbea73Eli Friedman return TPResult::True(); 89452fc314e1b5e1baee6305067cf831763d02bd243Dawn Perchik 89552fc314e1b5e1baee6305067cf831763d02bd243Dawn Perchik // Borland 89652fc314e1b5e1baee6305067cf831763d02bd243Dawn Perchik case tok::kw___pascal: 89752fc314e1b5e1baee6305067cf831763d02bd243Dawn Perchik return TPResult::True(); 89882287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson 89982287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson // AltiVec 90082287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson case tok::kw___vector: 90182287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson return TPResult::True(); 9025404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 90351e2a5d45d321c53355fe038b3a3e7a2f502afa4John McCall case tok::annot_template_id: { 90451e2a5d45d321c53355fe038b3a3e7a2f502afa4John McCall TemplateIdAnnotation *TemplateId 90551e2a5d45d321c53355fe038b3a3e7a2f502afa4John McCall = static_cast<TemplateIdAnnotation *>(Tok.getAnnotationValue()); 90651e2a5d45d321c53355fe038b3a3e7a2f502afa4John McCall if (TemplateId->Kind != TNK_Type_template) 90751e2a5d45d321c53355fe038b3a3e7a2f502afa4John McCall return TPResult::False(); 90851e2a5d45d321c53355fe038b3a3e7a2f502afa4John McCall CXXScopeSpec SS; 90951e2a5d45d321c53355fe038b3a3e7a2f502afa4John McCall AnnotateTemplateIdTokenAsType(&SS); 91051e2a5d45d321c53355fe038b3a3e7a2f502afa4John McCall assert(Tok.is(tok::annot_typename)); 91151e2a5d45d321c53355fe038b3a3e7a2f502afa4John McCall goto case_typename; 91251e2a5d45d321c53355fe038b3a3e7a2f502afa4John McCall } 91351e2a5d45d321c53355fe038b3a3e7a2f502afa4John McCall 914ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall case tok::annot_cxxscope: // foo::bar or ::foo::bar, but already parsed 915ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall // We've already annotated a scope; try to annotate a type. 9169ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall if (TryAnnotateTypeOrScopeToken()) 9179ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return TPResult::Error(); 9189ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall if (!Tok.is(tok::annot_typename)) 919ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall return TPResult::False(); 920ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall // If that succeeded, fallthrough into the generic simple-type-id case. 921ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall 9225404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // The ambiguity resides in a simple-type-specifier/typename-specifier 9235404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // followed by a '('. The '(' could either be the start of: 9245404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // 9255404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // direct-declarator: 9265404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // '(' declarator ')' 9275404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // 9285404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // direct-abstract-declarator: 9295404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // '(' parameter-declaration-clause ')' cv-qualifier-seq[opt] 9305404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // exception-specification[opt] 9315404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // '(' abstract-declarator ')' 9325404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // 9335404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // or part of a function-style cast expression: 9345404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // 9355404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // simple-type-specifier '(' expression-list[opt] ')' 9365404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // 9375404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 9385404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // simple-type-specifier: 9395404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 9409bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor case tok::annot_typename: 9419bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor case_typename: 9429bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor // In Objective-C, we might have a protocol-qualified type. 9439bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor if (getLang().ObjC1 && NextToken().is(tok::less)) { 9449bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor // Tentatively parse the 9459bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor TentativeParsingAction PA(*this); 9469bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor ConsumeToken(); // The type token 9479bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor 9489bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor TPResult TPR = TryParseProtocolQualifiers(); 9499bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor bool isFollowedByParen = Tok.is(tok::l_paren); 9509bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor 9519bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor PA.Revert(); 9529bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor 9539bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor if (TPR == TPResult::Error()) 9549bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor return TPResult::Error(); 9559bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor 9569bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor if (isFollowedByParen) 9579bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor return TPResult::Ambiguous(); 9589bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor 9599bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor return TPResult::True(); 9609bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor } 9619bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor 9625404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis case tok::kw_char: 9635404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis case tok::kw_wchar_t: 964f5c209d23b20ada4a9b6235db50317239cbf6ae1Alisdair Meredith case tok::kw_char16_t: 965f5c209d23b20ada4a9b6235db50317239cbf6ae1Alisdair Meredith case tok::kw_char32_t: 9665404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis case tok::kw_bool: 9675404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis case tok::kw_short: 9685404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis case tok::kw_int: 9695404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis case tok::kw_long: 9705404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis case tok::kw_signed: 9715404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis case tok::kw_unsigned: 9725404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis case tok::kw_float: 9735404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis case tok::kw_double: 9745404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis case tok::kw_void: 9755404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis if (NextToken().is(tok::l_paren)) 976b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis return TPResult::Ambiguous(); 9775404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 9789497a73ad0d54859edbf48beb93ebb19a7ae50c9Douglas Gregor if (isStartOfObjCClassMessageMissingOpenBracket()) 9799497a73ad0d54859edbf48beb93ebb19a7ae50c9Douglas Gregor return TPResult::False(); 9809497a73ad0d54859edbf48beb93ebb19a7ae50c9Douglas Gregor 981b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis return TPResult::True(); 9825404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 9836fd634f4ac59f5923cffadadb99d19f23c18707aAnders Carlsson // GNU typeof support. 9845404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis case tok::kw_typeof: { 9855404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis if (NextToken().isNot(tok::l_paren)) 986b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis return TPResult::True(); 9875404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 9885404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis TentativeParsingAction PA(*this); 9895404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 990b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis TPResult TPR = TryParseTypeofSpecifier(); 9915404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis bool isFollowedByParen = Tok.is(tok::l_paren); 9925404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 9935404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis PA.Revert(); 9945404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 995b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis if (TPR == TPResult::Error()) 996b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis return TPResult::Error(); 9975404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 9985404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis if (isFollowedByParen) 999b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis return TPResult::Ambiguous(); 10005404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 1001b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis return TPResult::True(); 10025404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis } 10035404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 10046fd634f4ac59f5923cffadadb99d19f23c18707aAnders Carlsson // C++0x decltype support. 10056fd634f4ac59f5923cffadadb99d19f23c18707aAnders Carlsson case tok::kw_decltype: 10066fd634f4ac59f5923cffadadb99d19f23c18707aAnders Carlsson return TPResult::True(); 10076fd634f4ac59f5923cffadadb99d19f23c18707aAnders Carlsson 10085404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis default: 1009b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis return TPResult::False(); 10105404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis } 10115404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis} 10125404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 10135404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// [GNU] typeof-specifier: 10145404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 'typeof' '(' expressions ')' 10155404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 'typeof' '(' type-name ')' 10165404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 1017b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios KyrtzidisParser::TPResult Parser::TryParseTypeofSpecifier() { 10185404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis assert(Tok.is(tok::kw_typeof) && "Expected 'typeof'!"); 10195404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis ConsumeToken(); 10205404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 10215404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis assert(Tok.is(tok::l_paren) && "Expected '('"); 10225404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // Parse through the parens after 'typeof'. 10235404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis ConsumeParen(); 10245404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis if (!SkipUntil(tok::r_paren)) 1025b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis return TPResult::Error(); 10265404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 1027b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis return TPResult::Ambiguous(); 10285404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis} 10295404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 10309bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor/// [ObjC] protocol-qualifiers: 10319bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor//// '<' identifier-list '>' 10329bd1d8d174a9d15ae343246c8322299248b9e92aDouglas GregorParser::TPResult Parser::TryParseProtocolQualifiers() { 10339bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor assert(Tok.is(tok::less) && "Expected '<' for qualifier list"); 10349bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor ConsumeToken(); 10359bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor do { 10369bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor if (Tok.isNot(tok::identifier)) 10379bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor return TPResult::Error(); 10389bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor ConsumeToken(); 10399bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor 10409bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor if (Tok.is(tok::comma)) { 10419bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor ConsumeToken(); 10429bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor continue; 10439bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor } 10449bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor 10459bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor if (Tok.is(tok::greater)) { 10469bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor ConsumeToken(); 10479bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor return TPResult::Ambiguous(); 10489bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor } 10499bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor } while (false); 10509bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor 10519bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor return TPResult::Error(); 10529bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor} 10539bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor 1054b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios KyrtzidisParser::TPResult Parser::TryParseDeclarationSpecifier() { 1055b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis TPResult TPR = isCXXDeclarationSpecifier(); 1056b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis if (TPR != TPResult::Ambiguous()) 10575404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis return TPR; 10585404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 10595404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis if (Tok.is(tok::kw_typeof)) 10605404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis TryParseTypeofSpecifier(); 10619bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor else { 10625404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis ConsumeToken(); 10639bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor 10649bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor if (getLang().ObjC1 && Tok.is(tok::less)) 10659bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor TryParseProtocolQualifiers(); 10669bd1d8d174a9d15ae343246c8322299248b9e92aDouglas Gregor } 10671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10685404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis assert(Tok.is(tok::l_paren) && "Expected '('!"); 1069b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis return TPResult::Ambiguous(); 10705404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis} 10715404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 10725404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// isCXXFunctionDeclarator - Disambiguates between a function declarator or 10735404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// a constructor-style initializer, when parsing declaration statements. 10745404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// Returns true for function declarator and false for constructor-style 10755404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// initializer. 10765404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// If during the disambiguation process a parsing error is encountered, 10775404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// the function returns true to let the declaration parsing code handle it. 10785404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 10795404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// '(' parameter-declaration-clause ')' cv-qualifier-seq[opt] 10805404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// exception-specification[opt] 10815404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 1082e75d849d9141d8e47d05a91b7b5c04194854e47aArgyrios Kyrtzidisbool Parser::isCXXFunctionDeclarator(bool warnIfAmbiguous) { 1083d3dbbb68b1050da2f58d4bea6b23016f451968c9Argyrios Kyrtzidis 1084d3dbbb68b1050da2f58d4bea6b23016f451968c9Argyrios Kyrtzidis // C++ 8.2p1: 1085d3dbbb68b1050da2f58d4bea6b23016f451968c9Argyrios Kyrtzidis // The ambiguity arising from the similarity between a function-style cast and 1086d3dbbb68b1050da2f58d4bea6b23016f451968c9Argyrios Kyrtzidis // a declaration mentioned in 6.8 can also occur in the context of a 1087d3dbbb68b1050da2f58d4bea6b23016f451968c9Argyrios Kyrtzidis // declaration. In that context, the choice is between a function declaration 1088d3dbbb68b1050da2f58d4bea6b23016f451968c9Argyrios Kyrtzidis // with a redundant set of parentheses around a parameter name and an object 1089d3dbbb68b1050da2f58d4bea6b23016f451968c9Argyrios Kyrtzidis // declaration with a function-style cast as the initializer. Just as for the 1090d3dbbb68b1050da2f58d4bea6b23016f451968c9Argyrios Kyrtzidis // ambiguities mentioned in 6.8, the resolution is to consider any construct 1091d3dbbb68b1050da2f58d4bea6b23016f451968c9Argyrios Kyrtzidis // that could possibly be a declaration a declaration. 1092d3dbbb68b1050da2f58d4bea6b23016f451968c9Argyrios Kyrtzidis 10935404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis TentativeParsingAction PA(*this); 10945404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 10955404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis ConsumeParen(); 1096b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis TPResult TPR = TryParseParameterDeclarationClause(); 1097b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis if (TPR == TPResult::Ambiguous() && Tok.isNot(tok::r_paren)) 1098b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis TPR = TPResult::False(); 10995404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 1100259b0d91f2ff90d8daf39221fe133bf1596c5ffbArgyrios Kyrtzidis SourceLocation TPLoc = Tok.getLocation(); 11015404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis PA.Revert(); 11025404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 11035404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // In case of an error, let the declaration parsing code handle it. 1104b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis if (TPR == TPResult::Error()) 11055404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis return true; 11065404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 1107259b0d91f2ff90d8daf39221fe133bf1596c5ffbArgyrios Kyrtzidis if (TPR == TPResult::Ambiguous()) { 1108259b0d91f2ff90d8daf39221fe133bf1596c5ffbArgyrios Kyrtzidis // Function declarator has precedence over constructor-style initializer. 1109259b0d91f2ff90d8daf39221fe133bf1596c5ffbArgyrios Kyrtzidis // Emit a warning just in case the author intended a variable definition. 1110e75d849d9141d8e47d05a91b7b5c04194854e47aArgyrios Kyrtzidis if (warnIfAmbiguous) 1111ef708fd4abccf4d21b1f82ab2ab62f6ae7cc1265Chris Lattner Diag(Tok, diag::warn_parens_disambiguated_as_function_decl) 1112ef708fd4abccf4d21b1f82ab2ab62f6ae7cc1265Chris Lattner << SourceRange(Tok.getLocation(), TPLoc); 1113b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis return true; 1114259b0d91f2ff90d8daf39221fe133bf1596c5ffbArgyrios Kyrtzidis } 1115b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis 1116b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis return TPR == TPResult::True(); 11175404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis} 11185404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 11195404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// parameter-declaration-clause: 11205404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// parameter-declaration-list[opt] '...'[opt] 11215404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// parameter-declaration-list ',' '...' 11225404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 11235404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// parameter-declaration-list: 11245404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// parameter-declaration 11255404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// parameter-declaration-list ',' parameter-declaration 11265404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 11275404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// parameter-declaration: 1128346af03b21db01264852afb8a86719c9284855feArgyrios Kyrtzidis/// decl-specifier-seq declarator attributes[opt] 1129346af03b21db01264852afb8a86719c9284855feArgyrios Kyrtzidis/// decl-specifier-seq declarator attributes[opt] '=' assignment-expression 1130346af03b21db01264852afb8a86719c9284855feArgyrios Kyrtzidis/// decl-specifier-seq abstract-declarator[opt] attributes[opt] 1131346af03b21db01264852afb8a86719c9284855feArgyrios Kyrtzidis/// decl-specifier-seq abstract-declarator[opt] attributes[opt] 1132346af03b21db01264852afb8a86719c9284855feArgyrios Kyrtzidis/// '=' assignment-expression 11335404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 1134b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios KyrtzidisParser::TPResult Parser::TryParseParameterDeclarationClause() { 11355404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 11365404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis if (Tok.is(tok::r_paren)) 1137b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis return TPResult::True(); 11385404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 11395404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // parameter-declaration-list[opt] '...'[opt] 11405404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // parameter-declaration-list ',' '...' 11415404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // 11425404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // parameter-declaration-list: 11435404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // parameter-declaration 11445404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // parameter-declaration-list ',' parameter-declaration 11455404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // 11465404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis while (1) { 11475404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // '...'[opt] 11485404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis if (Tok.is(tok::ellipsis)) { 11495404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis ConsumeToken(); 1150b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis return TPResult::True(); // '...' is a sign of a function declarator. 11515404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis } 11525404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 11537f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCall ParsedAttributes attrs; 11547f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCall MaybeParseMicrosoftAttributes(attrs); 1155334d47e92e9f241576fdeb7477b69a03136ba854Francois Pichet 11565404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // decl-specifier-seq 1157b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis TPResult TPR = TryParseDeclarationSpecifier(); 1158b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis if (TPR != TPResult::Ambiguous()) 11595404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis return TPR; 11605404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 11615404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // declarator 11625404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // abstract-declarator[opt] 11635404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis TPR = TryParseDeclarator(true/*mayBeAbstract*/); 1164b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis if (TPR != TPResult::Ambiguous()) 11655404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis return TPR; 11665404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 1167346af03b21db01264852afb8a86719c9284855feArgyrios Kyrtzidis // [GNU] attributes[opt] 1168346af03b21db01264852afb8a86719c9284855feArgyrios Kyrtzidis if (Tok.is(tok::kw___attribute)) 1169346af03b21db01264852afb8a86719c9284855feArgyrios Kyrtzidis return TPResult::True(); 1170346af03b21db01264852afb8a86719c9284855feArgyrios Kyrtzidis 11715404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis if (Tok.is(tok::equal)) { 11725404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // '=' assignment-expression 11735404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // Parse through assignment-expression. 1174a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor tok::TokenKind StopToks[2] ={ tok::comma, tok::r_paren }; 1175a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor if (!SkipUntil(StopToks, 2, true/*StopAtSemi*/, true/*DontConsume*/)) 1176b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis return TPResult::Error(); 11775404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis } 11785404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 11795404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis if (Tok.is(tok::ellipsis)) { 11805404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis ConsumeToken(); 1181b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis return TPResult::True(); // '...' is a sign of a function declarator. 11825404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis } 11835404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 11845404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis if (Tok.isNot(tok::comma)) 11855404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis break; 11865404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis ConsumeToken(); // the comma. 11875404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis } 11885404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 1189b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis return TPResult::Ambiguous(); 11905404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis} 11915404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 1192d3616a8d0b1506966cb669c19dbfc91bf42c810aArgyrios Kyrtzidis/// TryParseFunctionDeclarator - We parsed a '(' and we want to try to continue 1193d3616a8d0b1506966cb669c19dbfc91bf42c810aArgyrios Kyrtzidis/// parsing as a function declarator. 1194d3616a8d0b1506966cb669c19dbfc91bf42c810aArgyrios Kyrtzidis/// If TryParseFunctionDeclarator fully parsed the function declarator, it will 1195d3616a8d0b1506966cb669c19dbfc91bf42c810aArgyrios Kyrtzidis/// return TPResult::Ambiguous(), otherwise it will return either False() or 1196d3616a8d0b1506966cb669c19dbfc91bf42c810aArgyrios Kyrtzidis/// Error(). 11971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// 11985404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// '(' parameter-declaration-clause ')' cv-qualifier-seq[opt] 11995404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// exception-specification[opt] 12005404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 12015404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// exception-specification: 12025404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 'throw' '(' type-id-list[opt] ')' 12035404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 1204b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios KyrtzidisParser::TPResult Parser::TryParseFunctionDeclarator() { 1205d3616a8d0b1506966cb669c19dbfc91bf42c810aArgyrios Kyrtzidis 1206d3616a8d0b1506966cb669c19dbfc91bf42c810aArgyrios Kyrtzidis // The '(' is already parsed. 1207d3616a8d0b1506966cb669c19dbfc91bf42c810aArgyrios Kyrtzidis 1208d3616a8d0b1506966cb669c19dbfc91bf42c810aArgyrios Kyrtzidis TPResult TPR = TryParseParameterDeclarationClause(); 1209d3616a8d0b1506966cb669c19dbfc91bf42c810aArgyrios Kyrtzidis if (TPR == TPResult::Ambiguous() && Tok.isNot(tok::r_paren)) 1210d3616a8d0b1506966cb669c19dbfc91bf42c810aArgyrios Kyrtzidis TPR = TPResult::False(); 1211d3616a8d0b1506966cb669c19dbfc91bf42c810aArgyrios Kyrtzidis 1212d3616a8d0b1506966cb669c19dbfc91bf42c810aArgyrios Kyrtzidis if (TPR == TPResult::False() || TPR == TPResult::Error()) 1213d3616a8d0b1506966cb669c19dbfc91bf42c810aArgyrios Kyrtzidis return TPR; 1214d3616a8d0b1506966cb669c19dbfc91bf42c810aArgyrios Kyrtzidis 12155404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // Parse through the parens. 12165404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis if (!SkipUntil(tok::r_paren)) 1217b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis return TPResult::Error(); 12185404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 12195404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // cv-qualifier-seq 12205404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis while (Tok.is(tok::kw_const) || 12215404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis Tok.is(tok::kw_volatile) || 12225404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis Tok.is(tok::kw_restrict) ) 12235404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis ConsumeToken(); 12245404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 12255404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // exception-specification 12265404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis if (Tok.is(tok::kw_throw)) { 12275404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis ConsumeToken(); 12285404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis if (Tok.isNot(tok::l_paren)) 1229b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis return TPResult::Error(); 12305404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 12315404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // Parse through the parens after 'throw'. 12325404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis ConsumeParen(); 12335404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis if (!SkipUntil(tok::r_paren)) 1234b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis return TPResult::Error(); 12355404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis } 12365404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 1237b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis return TPResult::Ambiguous(); 12385404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis} 12395404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 12405404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// '[' constant-expression[opt] ']' 12415404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis/// 1242b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios KyrtzidisParser::TPResult Parser::TryParseBracketDeclarator() { 12435404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis ConsumeBracket(); 12445404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis if (!SkipUntil(tok::r_square)) 1245b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis return TPResult::Error(); 12465404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 1247b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis return TPResult::Ambiguous(); 12485404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis} 1249