Parser.cpp revision e55329d6834647ba0e06f8a319e5d84c77310035
15f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===--- Parser.cpp - C Language Family Parser ----------------------------===// 25f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 35f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// The LLVM Compiler Infrastructure 45f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 50bc735ffcfb223c0186419547abaa5c84482663eChris Lattner// This file is distributed under the University of Illinois Open Source 60bc735ffcfb223c0186419547abaa5c84482663eChris Lattner// License. See LICENSE.TXT for details. 75f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 85f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 95f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// This file implements the Parser interfaces. 115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/Parse/Parser.h" 15500d3297d2a21edeac4d46cbcbe21bc2352c2a28Chris Lattner#include "clang/Parse/ParseDiagnostic.h" 1619510856727e0e14a3696b2a72c35163bff2a71fJohn McCall#include "clang/Sema/DeclSpec.h" 1719510856727e0e14a3696b2a72c35163bff2a71fJohn McCall#include "clang/Sema/Scope.h" 1819510856727e0e14a3696b2a72c35163bff2a71fJohn McCall#include "clang/Sema/ParsedTemplate.h" 190102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner#include "llvm/Support/raw_ostream.h" 20d167ca0d26e43292b8b9e8d5300d92784ae0e27dChris Lattner#include "RAIIObjectsForParser.h" 21fcdd8fe26de3eee44927600bf1853e21bd90dd84Daniel Dunbar#include "ParsePragma.h" 228387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet#include "clang/AST/DeclTemplate.h" 23f986038beed360c031de8654cfba43a5d3184605Francois Pichet#include "clang/AST/ASTConsumer.h" 245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerusing namespace clang; 255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 26b57791e5b40afa6691063c83d0e95c416fb19fdeDouglas GregorIdentifierInfo *Parser::getSEHExceptKeyword() { 27b57791e5b40afa6691063c83d0e95c416fb19fdeDouglas Gregor // __except is accepted as a (contextual) keyword 284e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!Ident__except && (getLangOpts().MicrosoftExt || getLangOpts().Borland)) 29b57791e5b40afa6691063c83d0e95c416fb19fdeDouglas Gregor Ident__except = PP.getIdentifierInfo("__except"); 30b57791e5b40afa6691063c83d0e95c416fb19fdeDouglas Gregor 31b57791e5b40afa6691063c83d0e95c416fb19fdeDouglas Gregor return Ident__except; 32b57791e5b40afa6691063c83d0e95c416fb19fdeDouglas Gregor} 33b57791e5b40afa6691063c83d0e95c416fb19fdeDouglas Gregor 34f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCallParser::Parser(Preprocessor &pp, Sema &actions) 35614f96a7cf94805c2d336639300b62dc2f54e9e0Ted Kremenek : PP(pp), Actions(actions), Diags(PP.getDiagnostics()), 360fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor GreaterThanIsOperator(true), ColonIsSacred(false), 370fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor InMessageExpression(false), TemplateParameterDepth(0) { 385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Tok.setKind(tok::eof); 3923c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Actions.CurScope = 0; 409e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner NumCachedScopes = 0; 415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ParenCount = BracketCount = BraceCount = 0; 42849639d8b548519cc5a00c0c9253f0c0d525060dArgyrios Kyrtzidis CurParsedObjCImpl = 0; 43fcdd8fe26de3eee44927600bf1853e21bd90dd84Daniel Dunbar 44fcdd8fe26de3eee44927600bf1853e21bd90dd84Daniel Dunbar // Add #pragma handlers. These are removed and destroyed in the 45fcdd8fe26de3eee44927600bf1853e21bd90dd84Daniel Dunbar // destructor. 46cbb98edd530787c2ac019e437e7c599df8004ba7Daniel Dunbar AlignHandler.reset(new PragmaAlignHandler(actions)); 47cbb98edd530787c2ac019e437e7c599df8004ba7Daniel Dunbar PP.AddPragmaHandler(AlignHandler.get()); 48cbb98edd530787c2ac019e437e7c599df8004ba7Daniel Dunbar 49aa8b0d19244a6e7e8e5798fcc6aef003c274d3e0Eli Friedman GCCVisibilityHandler.reset(new PragmaGCCVisibilityHandler(actions)); 50aa8b0d19244a6e7e8e5798fcc6aef003c274d3e0Eli Friedman PP.AddPragmaHandler("GCC", GCCVisibilityHandler.get()); 51aa8b0d19244a6e7e8e5798fcc6aef003c274d3e0Eli Friedman 529b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis OptionsHandler.reset(new PragmaOptionsHandler(actions)); 539b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PP.AddPragmaHandler(OptionsHandler.get()); 549b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis 559b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PackHandler.reset(new PragmaPackHandler(actions)); 569b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PP.AddPragmaHandler(PackHandler.get()); 5762c9258f4a71569a66d805fc7776526a2c76b34eFariborz Jahanian 5862c9258f4a71569a66d805fc7776526a2c76b34eFariborz Jahanian MSStructHandler.reset(new PragmaMSStructHandler(actions)); 5962c9258f4a71569a66d805fc7776526a2c76b34eFariborz Jahanian PP.AddPragmaHandler(MSStructHandler.get()); 609b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis 619b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis UnusedHandler.reset(new PragmaUnusedHandler(actions, *this)); 629b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PP.AddPragmaHandler(UnusedHandler.get()); 639b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis 649b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis WeakHandler.reset(new PragmaWeakHandler(actions)); 659b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PP.AddPragmaHandler(WeakHandler.get()); 66321b8179afaf803dcc56b2a19f7b0891a03c92c8Peter Collingbourne 675f3c163b7b19a0c7e02509a0984ee1256bca890dDavid Chisnall RedefineExtnameHandler.reset(new PragmaRedefineExtnameHandler(actions)); 685f3c163b7b19a0c7e02509a0984ee1256bca890dDavid Chisnall PP.AddPragmaHandler(RedefineExtnameHandler.get()); 695f3c163b7b19a0c7e02509a0984ee1256bca890dDavid Chisnall 70321b8179afaf803dcc56b2a19f7b0891a03c92c8Peter Collingbourne FPContractHandler.reset(new PragmaFPContractHandler(actions, *this)); 71321b8179afaf803dcc56b2a19f7b0891a03c92c8Peter Collingbourne PP.AddPragmaHandler("STDC", FPContractHandler.get()); 72f315fa81eef1977b3457fd7a7d4639e060fe7278Peter Collingbourne 734e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (getLangOpts().OpenCL) { 74f315fa81eef1977b3457fd7a7d4639e060fe7278Peter Collingbourne OpenCLExtensionHandler.reset( 75f315fa81eef1977b3457fd7a7d4639e060fe7278Peter Collingbourne new PragmaOpenCLExtensionHandler(actions, *this)); 76f315fa81eef1977b3457fd7a7d4639e060fe7278Peter Collingbourne PP.AddPragmaHandler("OPENCL", OpenCLExtensionHandler.get()); 77f315fa81eef1977b3457fd7a7d4639e060fe7278Peter Collingbourne 78f315fa81eef1977b3457fd7a7d4639e060fe7278Peter Collingbourne PP.AddPragmaHandler("OPENCL", FPContractHandler.get()); 79f315fa81eef1977b3457fd7a7d4639e060fe7278Peter Collingbourne } 80f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor 81f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor PP.setCodeCompletionHandler(*this); 825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 840102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner/// If a crash happens while the parser is active, print out a line indicating 850102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner/// what the current token is. 865f9e272e632e951b1efe824cd16acb4d96077930Chris Lattnervoid PrettyStackTraceParserEntry::print(raw_ostream &OS) const { 870102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner const Token &Tok = P.getCurToken(); 88ddcbc0a72a04a5ae2493088f1437200a9ea480b1Chris Lattner if (Tok.is(tok::eof)) { 890102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner OS << "<eof> parser at end of file\n"; 900102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner return; 910102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner } 921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 93ddcbc0a72a04a5ae2493088f1437200a9ea480b1Chris Lattner if (Tok.getLocation().isInvalid()) { 94ddcbc0a72a04a5ae2493088f1437200a9ea480b1Chris Lattner OS << "<unknown> parser at unknown location\n"; 95ddcbc0a72a04a5ae2493088f1437200a9ea480b1Chris Lattner return; 96ddcbc0a72a04a5ae2493088f1437200a9ea480b1Chris Lattner } 971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 980102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner const Preprocessor &PP = P.getPreprocessor(); 990102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner Tok.getLocation().print(OS, PP.getSourceManager()); 1009fa31dd71e0414e2ca905380e2f8d42710b22c82Daniel Dunbar if (Tok.isAnnotation()) 1019fa31dd71e0414e2ca905380e2f8d42710b22c82Daniel Dunbar OS << ": at annotation token \n"; 1029fa31dd71e0414e2ca905380e2f8d42710b22c82Daniel Dunbar else 1039fa31dd71e0414e2ca905380e2f8d42710b22c82Daniel Dunbar OS << ": current parser token '" << PP.getSpelling(Tok) << "'\n"; 104f780abc21c39cd4731b9e38f2d2d9f7d1510bd7bDouglas Gregor} 1055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1060102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner 1073cbfe2c4159e0a219ae660d50625c013aa4afbd0Chris LattnerDiagnosticBuilder Parser::Diag(SourceLocation Loc, unsigned DiagID) { 10833e4e70c8c0a17e0ccb7465d96556b077a68ecb1Argyrios Kyrtzidis return Diags.Report(Loc, DiagID); 1091ab3b96de160e4fbffec2a776e284a48a3bb543dChris Lattner} 1101ab3b96de160e4fbffec2a776e284a48a3bb543dChris Lattner 1113cbfe2c4159e0a219ae660d50625c013aa4afbd0Chris LattnerDiagnosticBuilder Parser::Diag(const Token &Tok, unsigned DiagID) { 1121ab3b96de160e4fbffec2a776e284a48a3bb543dChris Lattner return Diag(Tok.getLocation(), DiagID); 1135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 1145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1154b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor/// \brief Emits a diagnostic suggesting parentheses surrounding a 1164b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor/// given range. 1174b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor/// 1184b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor/// \param Loc The location where we'll emit the diagnostic. 1194b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor/// \param Loc The kind of diagnostic to emit. 1204b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor/// \param ParenRange Source range enclosing code that should be parenthesized. 1214b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregorvoid Parser::SuggestParentheses(SourceLocation Loc, unsigned DK, 1224b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor SourceRange ParenRange) { 123b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor SourceLocation EndLoc = PP.getLocForEndOfToken(ParenRange.getEnd()); 124b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor if (!ParenRange.getEnd().isFileID() || EndLoc.isInvalid()) { 1254b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor // We can't display the parentheses, so just dig the 1264b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor // warning/error and return. 1274b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor Diag(Loc, DK); 1284b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor return; 1294b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor } 1301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Diag(Loc, DK) 132849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor << FixItHint::CreateInsertion(ParenRange.getBegin(), "(") 133849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor << FixItHint::CreateInsertion(EndLoc, ")"); 1344b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor} 1354b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor 136837b1a37116cf4e64f8bb7db34982dee1fba7647John McCallstatic bool IsCommonTypo(tok::TokenKind ExpectedTok, const Token &Tok) { 137837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall switch (ExpectedTok) { 138837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall case tok::semi: return Tok.is(tok::colon); // : for ; 139837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall default: return false; 140837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall } 141837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall} 142837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall 1435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ExpectAndConsume - The parser expects that 'ExpectedTok' is next in the 1445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// input. If so, it is consumed and false is returned. 1455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 1465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// If the input is malformed, this emits the specified diagnostic. Next, if 1475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// SkipToTok is specified, it calls SkipUntil(SkipToTok). Finally, true is 1485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// returned. 1495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerbool Parser::ExpectAndConsume(tok::TokenKind ExpectedTok, unsigned DiagID, 1505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const char *Msg, tok::TokenKind SkipToTok) { 151dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor if (Tok.is(ExpectedTok) || Tok.is(tok::code_completion)) { 1525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeAnyToken(); 1535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 1545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 155a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 156837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall // Detect common single-character typos and resume. 157837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall if (IsCommonTypo(ExpectedTok, Tok)) { 158837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall SourceLocation Loc = Tok.getLocation(); 159837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall Diag(Loc, DiagID) 160837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall << Msg 161837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall << FixItHint::CreateReplacement(SourceRange(Loc), 162837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall getTokenSimpleSpelling(ExpectedTok)); 163837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall ConsumeAnyToken(); 164837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall 165837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall // Pretend there wasn't a problem. 166837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall return false; 167837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall } 168837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall 1694b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor const char *Spelling = 0; 170b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor SourceLocation EndLoc = PP.getLocForEndOfToken(PrevTokLocation); 1711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (EndLoc.isValid() && 172b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor (Spelling = tok::getTokenSimpleSpelling(ExpectedTok))) { 1734b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor // Show what code to insert to fix this problem. 1741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Diag(EndLoc, DiagID) 1754b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor << Msg 176849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor << FixItHint::CreateInsertion(EndLoc, Spelling); 1774b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor } else 1784b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor Diag(Tok, DiagID) << Msg; 1794b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor 1805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (SkipToTok != tok::unknown) 1815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SkipUntil(SkipToTok); 1825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return true; 1835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 1845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1859ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregorbool Parser::ExpectAndConsumeSemi(unsigned DiagID) { 1869ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor if (Tok.is(tok::semi) || Tok.is(tok::code_completion)) { 1879ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor ConsumeAnyToken(); 1889ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor return false; 1899ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor } 1909ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor 1919ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor if ((Tok.is(tok::r_paren) || Tok.is(tok::r_square)) && 1929ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor NextToken().is(tok::semi)) { 1939ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor Diag(Tok, diag::err_extraneous_token_before_semi) 1949ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor << PP.getSpelling(Tok) 1959ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor << FixItHint::CreateRemoval(Tok.getLocation()); 1969ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor ConsumeAnyToken(); // The ')' or ']'. 1979ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor ConsumeToken(); // The ';'. 1989ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor return false; 1999ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor } 2009ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor 2019ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor return ExpectAndConsume(tok::semi, DiagID); 2029ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor} 2039ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor 2045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 2055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// Error recovery. 2065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 2075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// SkipUntil - Read tokens until we get to the specified token, then consume 209012cf464254804279efa84e21b4b493dde76c5f1Chris Lattner/// it (unless DontConsume is true). Because we cannot guarantee that the 2105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// token will ever occur, this skips to the next token, or to some likely 2115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// good stopping point. If StopAtSemi is true, skipping will stop at a ';' 2125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// character. 213a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump/// 2145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// If SkipUntil finds the specified token, it returns true, otherwise it 215a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump/// returns false. 2165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerbool Parser::SkipUntil(const tok::TokenKind *Toks, unsigned NumToks, 2173437f1f1294499d4ef306c1089fcb3e29ec2aa68Argyrios Kyrtzidis bool StopAtSemi, bool DontConsume, 2183437f1f1294499d4ef306c1089fcb3e29ec2aa68Argyrios Kyrtzidis bool StopAtCodeCompletion) { 2195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // We always want this function to skip at least one token if the first token 2205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // isn't T and if not at EOF. 2215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool isFirstTokenSkipped = true; 2225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer while (1) { 2235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If we found one of the tokens, stop and return true. 2245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer for (unsigned i = 0; i != NumToks; ++i) { 225000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.is(Toks[i])) { 2265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (DontConsume) { 2275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Noop, don't consume the token. 2285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } else { 2295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeAnyToken(); 2305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return true; 2325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 234a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 2355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (Tok.getKind()) { 2365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::eof: 2375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Ran out of tokens. 2385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 239dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor 240dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor case tok::code_completion: 2413437f1f1294499d4ef306c1089fcb3e29ec2aa68Argyrios Kyrtzidis if (!StopAtCodeCompletion) 2423437f1f1294499d4ef306c1089fcb3e29ec2aa68Argyrios Kyrtzidis ConsumeToken(); 243dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor return false; 244dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor 2455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::l_paren: 2465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Recursively skip properly-nested parens. 2475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeParen(); 2483437f1f1294499d4ef306c1089fcb3e29ec2aa68Argyrios Kyrtzidis SkipUntil(tok::r_paren, false, false, StopAtCodeCompletion); 2495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 2505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::l_square: 2515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Recursively skip properly-nested square brackets. 2525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeBracket(); 2533437f1f1294499d4ef306c1089fcb3e29ec2aa68Argyrios Kyrtzidis SkipUntil(tok::r_square, false, false, StopAtCodeCompletion); 2545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 2555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::l_brace: 2565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Recursively skip properly-nested braces. 2575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeBrace(); 2583437f1f1294499d4ef306c1089fcb3e29ec2aa68Argyrios Kyrtzidis SkipUntil(tok::r_brace, false, false, StopAtCodeCompletion); 2595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 260a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 2615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Okay, we found a ']' or '}' or ')', which we think should be balanced. 2625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Since the user wasn't looking for this token (if they were, it would 2635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // already be handled), this isn't balanced. If there is a LHS token at a 2645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // higher level, we will assume that this matches the unbalanced token 2655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // and return it. Otherwise, this is a spurious RHS token, which we skip. 2665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::r_paren: 2675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (ParenCount && !isFirstTokenSkipped) 2685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; // Matches something. 2695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeParen(); 2705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 2715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::r_square: 2725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (BracketCount && !isFirstTokenSkipped) 2735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; // Matches something. 2745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeBracket(); 2755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 2765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::r_brace: 2775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (BraceCount && !isFirstTokenSkipped) 2785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; // Matches something. 2795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeBrace(); 2805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 281a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 2825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::string_literal: 2835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::wide_string_literal: 2845cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor case tok::utf8_string_literal: 2855cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor case tok::utf16_string_literal: 2865cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor case tok::utf32_string_literal: 2875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeStringToken(); 2885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 28955edca9d7d6a50cbda6f036b05a0cb8d42f5a010Fariborz Jahanian 2905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::semi: 2915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (StopAtSemi) 2925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 2935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // FALL THROUGH. 2945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer default: 2955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Skip this token. 2965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeToken(); 2975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 2985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer isFirstTokenSkipped = false; 300a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump } 3015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 3025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 3045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// Scope manipulation 3055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 3065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// EnterScope - Start a new scope. 3085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencervoid Parser::EnterScope(unsigned ScopeFlags) { 3099e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner if (NumCachedScopes) { 3109e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner Scope *N = ScopeCache[--NumCachedScopes]; 31123c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor N->Init(getCurScope(), ScopeFlags); 31223c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Actions.CurScope = N; 3135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } else { 3149c4eb1f3438370355f51dc8c62f2ca4803e3338dArgyrios Kyrtzidis Actions.CurScope = new Scope(getCurScope(), ScopeFlags, Diags); 3155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 3165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 3175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ExitScope - Pop a scope off the scope stack. 3195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencervoid Parser::ExitScope() { 32023c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor assert(getCurScope() && "Scope imbalance!"); 3215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 32290ae68aae98f12fe1950c63e2f6bd0fabce6cb1eChris Lattner // Inform the actions module that this scope is going away if there are any 32390ae68aae98f12fe1950c63e2f6bd0fabce6cb1eChris Lattner // decls in it. 32423c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor if (!getCurScope()->decl_empty()) 32523c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Actions.ActOnPopScope(Tok.getLocation(), getCurScope()); 326a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 32723c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Scope *OldScope = getCurScope(); 32823c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Actions.CurScope = OldScope->getParent(); 329a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 3309e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner if (NumCachedScopes == ScopeCacheSize) 3319e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner delete OldScope; 3325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer else 3339e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner ScopeCache[NumCachedScopes++] = OldScope; 3345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 3355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3367a614d8380297fcd2bc23986241905d97222948cRichard Smith/// Set the flags for the current scope to ScopeFlags. If ManageFlags is false, 3377a614d8380297fcd2bc23986241905d97222948cRichard Smith/// this object does nothing. 3387a614d8380297fcd2bc23986241905d97222948cRichard SmithParser::ParseScopeFlags::ParseScopeFlags(Parser *Self, unsigned ScopeFlags, 3397a614d8380297fcd2bc23986241905d97222948cRichard Smith bool ManageFlags) 3407a614d8380297fcd2bc23986241905d97222948cRichard Smith : CurScope(ManageFlags ? Self->getCurScope() : 0) { 3417a614d8380297fcd2bc23986241905d97222948cRichard Smith if (CurScope) { 3427a614d8380297fcd2bc23986241905d97222948cRichard Smith OldFlags = CurScope->getFlags(); 3437a614d8380297fcd2bc23986241905d97222948cRichard Smith CurScope->setFlags(ScopeFlags); 3447a614d8380297fcd2bc23986241905d97222948cRichard Smith } 3457a614d8380297fcd2bc23986241905d97222948cRichard Smith} 3465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3477a614d8380297fcd2bc23986241905d97222948cRichard Smith/// Restore the flags for the current scope to what they were before this 3487a614d8380297fcd2bc23986241905d97222948cRichard Smith/// object overrode them. 3497a614d8380297fcd2bc23986241905d97222948cRichard SmithParser::ParseScopeFlags::~ParseScopeFlags() { 3507a614d8380297fcd2bc23986241905d97222948cRichard Smith if (CurScope) 3517a614d8380297fcd2bc23986241905d97222948cRichard Smith CurScope->setFlags(OldFlags); 3527a614d8380297fcd2bc23986241905d97222948cRichard Smith} 3535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 3565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// C99 6.9: External Definitions. 3575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 3585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid SpencerParser::~Parser() { 3605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If we still have scopes active, delete the scope tree. 36123c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor delete getCurScope(); 36223c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Actions.CurScope = 0; 36323c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor 3645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Free the scope cache. 3659e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner for (unsigned i = 0, e = NumCachedScopes; i != e; ++i) 3669e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner delete ScopeCache[i]; 367fcdd8fe26de3eee44927600bf1853e21bd90dd84Daniel Dunbar 3688387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet // Free LateParsedTemplatedFunction nodes. 3698387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet for (LateParsedTemplateMapT::iterator it = LateParsedTemplateMap.begin(); 3708387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet it != LateParsedTemplateMap.end(); ++it) 3718387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet delete it->second; 3728387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet 373fcdd8fe26de3eee44927600bf1853e21bd90dd84Daniel Dunbar // Remove the pragma handlers we installed. 374cbb98edd530787c2ac019e437e7c599df8004ba7Daniel Dunbar PP.RemovePragmaHandler(AlignHandler.get()); 375cbb98edd530787c2ac019e437e7c599df8004ba7Daniel Dunbar AlignHandler.reset(); 376aa8b0d19244a6e7e8e5798fcc6aef003c274d3e0Eli Friedman PP.RemovePragmaHandler("GCC", GCCVisibilityHandler.get()); 377aa8b0d19244a6e7e8e5798fcc6aef003c274d3e0Eli Friedman GCCVisibilityHandler.reset(); 3789b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PP.RemovePragmaHandler(OptionsHandler.get()); 379861800c676004eabed5927f0552620d06c80a40aDaniel Dunbar OptionsHandler.reset(); 3809b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PP.RemovePragmaHandler(PackHandler.get()); 3814726d03ab3abce41911c31d1354a18f1258cae4dTed Kremenek PackHandler.reset(); 38262c9258f4a71569a66d805fc7776526a2c76b34eFariborz Jahanian PP.RemovePragmaHandler(MSStructHandler.get()); 38362c9258f4a71569a66d805fc7776526a2c76b34eFariborz Jahanian MSStructHandler.reset(); 3849b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PP.RemovePragmaHandler(UnusedHandler.get()); 3854726d03ab3abce41911c31d1354a18f1258cae4dTed Kremenek UnusedHandler.reset(); 3869b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PP.RemovePragmaHandler(WeakHandler.get()); 3879991479ad5dde617168cc1e4b18425cdbbfd9fa9Eli Friedman WeakHandler.reset(); 3885f3c163b7b19a0c7e02509a0984ee1256bca890dDavid Chisnall PP.RemovePragmaHandler(RedefineExtnameHandler.get()); 3895f3c163b7b19a0c7e02509a0984ee1256bca890dDavid Chisnall RedefineExtnameHandler.reset(); 390f315fa81eef1977b3457fd7a7d4639e060fe7278Peter Collingbourne 3914e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (getLangOpts().OpenCL) { 392f315fa81eef1977b3457fd7a7d4639e060fe7278Peter Collingbourne PP.RemovePragmaHandler("OPENCL", OpenCLExtensionHandler.get()); 393f315fa81eef1977b3457fd7a7d4639e060fe7278Peter Collingbourne OpenCLExtensionHandler.reset(); 394f315fa81eef1977b3457fd7a7d4639e060fe7278Peter Collingbourne PP.RemovePragmaHandler("OPENCL", FPContractHandler.get()); 395f315fa81eef1977b3457fd7a7d4639e060fe7278Peter Collingbourne } 396f315fa81eef1977b3457fd7a7d4639e060fe7278Peter Collingbourne 397321b8179afaf803dcc56b2a19f7b0891a03c92c8Peter Collingbourne PP.RemovePragmaHandler("STDC", FPContractHandler.get()); 398321b8179afaf803dcc56b2a19f7b0891a03c92c8Peter Collingbourne FPContractHandler.reset(); 399f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor PP.clearCodeCompletionHandler(); 4005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 4015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 4025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// Initialize - Warm up the parser. 4035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 4045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencervoid Parser::Initialize() { 40531e057270232c1c37602579cb6461c2704175672Chris Lattner // Create the translation unit scope. Install it as the current scope. 40623c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor assert(getCurScope() == 0 && "A scope is already active?"); 40731e057270232c1c37602579cb6461c2704175672Chris Lattner EnterScope(Scope::DeclScope); 408c1a3e5e73859ece9f106ae9d84c78bef4111956aDouglas Gregor Actions.ActOnTranslationUnitScope(getCurScope()); 409c1a3e5e73859ece9f106ae9d84c78bef4111956aDouglas Gregor 410c1a3e5e73859ece9f106ae9d84c78bef4111956aDouglas Gregor // Prime the lexer look-ahead. 411c1a3e5e73859ece9f106ae9d84c78bef4111956aDouglas Gregor ConsumeToken(); 412a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 413000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.is(tok::eof) && 4144e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie !getLangOpts().CPlusPlus) // Empty source file is an extension in C 4155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(Tok, diag::ext_empty_source_file); 416a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 41734870da70fa42b0391b79627ebd0cfc6eb22213bChris Lattner // Initialization for Objective-C context sensitive keywords recognition. 418a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek // Referenced in Parser::ParseObjCTypeQualifierList. 4194e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (getLangOpts().ObjC1) { 420a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek ObjCTypeQuals[objc_in] = &PP.getIdentifierTable().get("in"); 421a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek ObjCTypeQuals[objc_out] = &PP.getIdentifierTable().get("out"); 422a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek ObjCTypeQuals[objc_inout] = &PP.getIdentifierTable().get("inout"); 423a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek ObjCTypeQuals[objc_oneway] = &PP.getIdentifierTable().get("oneway"); 424a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek ObjCTypeQuals[objc_bycopy] = &PP.getIdentifierTable().get("bycopy"); 425a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek ObjCTypeQuals[objc_byref] = &PP.getIdentifierTable().get("byref"); 42634870da70fa42b0391b79627ebd0cfc6eb22213bChris Lattner } 427662e8b5647adbb1bc9eeceece7b64600cfa87471Daniel Dunbar 428e97179c675b341927807c718be215c8d1aab8acbDouglas Gregor Ident_instancetype = 0; 4297eeb4ec11043d4860361348f2b19299d957d47a9Anders Carlsson Ident_final = 0; 4307eeb4ec11043d4860361348f2b19299d957d47a9Anders Carlsson Ident_override = 0; 4311f3b6fdabbb10779a473d6315154d7325ce20aeaAnders Carlsson 432662e8b5647adbb1bc9eeceece7b64600cfa87471Daniel Dunbar Ident_super = &PP.getIdentifierTable().get("super"); 43382287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson 4344e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (getLangOpts().AltiVec) { 43582287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson Ident_vector = &PP.getIdentifierTable().get("vector"); 43682287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson Ident_pixel = &PP.getIdentifierTable().get("pixel"); 43782287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson } 4380a0d2b179085a52c10402feebeb6db8b4d96a140Douglas Gregor 4390a0d2b179085a52c10402feebeb6db8b4d96a140Douglas Gregor Ident_introduced = 0; 4400a0d2b179085a52c10402feebeb6db8b4d96a140Douglas Gregor Ident_deprecated = 0; 4410a0d2b179085a52c10402feebeb6db8b4d96a140Douglas Gregor Ident_obsoleted = 0; 442b53e417ba487f4193ef3b0485b420e0fdae643a2Douglas Gregor Ident_unavailable = 0; 44328bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley 444b57791e5b40afa6691063c83d0e95c416fb19fdeDouglas Gregor Ident__except = 0; 445b57791e5b40afa6691063c83d0e95c416fb19fdeDouglas Gregor 44628bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley Ident__exception_code = Ident__exception_info = Ident__abnormal_termination = 0; 44728bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley Ident___exception_code = Ident___exception_info = Ident___abnormal_termination = 0; 44828bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley Ident_GetExceptionCode = Ident_GetExceptionInfo = Ident_AbnormalTermination = 0; 44928bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley 4504e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if(getLangOpts().Borland) { 45128bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley Ident__exception_info = PP.getIdentifierInfo("_exception_info"); 45228bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley Ident___exception_info = PP.getIdentifierInfo("__exception_info"); 45328bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley Ident_GetExceptionInfo = PP.getIdentifierInfo("GetExceptionInformation"); 45428bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley Ident__exception_code = PP.getIdentifierInfo("_exception_code"); 45528bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley Ident___exception_code = PP.getIdentifierInfo("__exception_code"); 45628bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley Ident_GetExceptionCode = PP.getIdentifierInfo("GetExceptionCode"); 45728bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley Ident__abnormal_termination = PP.getIdentifierInfo("_abnormal_termination"); 45828bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley Ident___abnormal_termination = PP.getIdentifierInfo("__abnormal_termination"); 45928bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley Ident_AbnormalTermination = PP.getIdentifierInfo("AbnormalTermination"); 46028bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley 46128bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley PP.SetPoisonReason(Ident__exception_code,diag::err_seh___except_block); 46228bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley PP.SetPoisonReason(Ident___exception_code,diag::err_seh___except_block); 46328bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley PP.SetPoisonReason(Ident_GetExceptionCode,diag::err_seh___except_block); 46428bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley PP.SetPoisonReason(Ident__exception_info,diag::err_seh___except_filter); 46528bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley PP.SetPoisonReason(Ident___exception_info,diag::err_seh___except_filter); 46628bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley PP.SetPoisonReason(Ident_GetExceptionInfo,diag::err_seh___except_filter); 46728bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley PP.SetPoisonReason(Ident__abnormal_termination,diag::err_seh___finally_block); 46828bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley PP.SetPoisonReason(Ident___abnormal_termination,diag::err_seh___finally_block); 46928bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley PP.SetPoisonReason(Ident_AbnormalTermination,diag::err_seh___finally_block); 47028bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley } 4715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 4725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 4735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseTopLevelDecl - Parse one top-level declaration, return whatever the 4745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// action tells us to. This returns true if the EOF was encountered. 475682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattnerbool Parser::ParseTopLevelDecl(DeclGroupPtrTy &Result) { 47625a767651d14db87aa03dd5fe3e011d877dd4100Argyrios Kyrtzidis DelayedCleanupPoint CleanupRAII(TopLevelDeclCleanupPool); 477b918d0f5d8f147e1e26c34e6cf42a79af2d2ec41Argyrios Kyrtzidis 478e55329d6834647ba0e06f8a319e5d84c77310035Axel Naumann // Skip over the EOF token, flagging end of previous input for incremental 479e55329d6834647ba0e06f8a319e5d84c77310035Axel Naumann // processing 480e55329d6834647ba0e06f8a319e5d84c77310035Axel Naumann if (PP.isIncrementalProcessingEnabled() && Tok.is(tok::eof)) 481e55329d6834647ba0e06f8a319e5d84c77310035Axel Naumann ConsumeToken(); 482e55329d6834647ba0e06f8a319e5d84c77310035Axel Naumann 483b918d0f5d8f147e1e26c34e6cf42a79af2d2ec41Argyrios Kyrtzidis while (Tok.is(tok::annot_pragma_unused)) 484b918d0f5d8f147e1e26c34e6cf42a79af2d2ec41Argyrios Kyrtzidis HandlePragmaUnused(); 485b918d0f5d8f147e1e26c34e6cf42a79af2d2ec41Argyrios Kyrtzidis 486682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner Result = DeclGroupPtrTy(); 4879299f3fa85796613cc787a2062c9562d07c8613eChris Lattner if (Tok.is(tok::eof)) { 4888387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet // Late template parsing can begin. 4894e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (getLangOpts().DelayedTemplateParsing) 4908387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet Actions.SetLateTemplateParser(LateTemplateParserCallback, this); 491e55329d6834647ba0e06f8a319e5d84c77310035Axel Naumann if (!PP.isIncrementalProcessingEnabled()) 492e55329d6834647ba0e06f8a319e5d84c77310035Axel Naumann Actions.ActOnEndOfTranslationUnit(); 493e55329d6834647ba0e06f8a319e5d84c77310035Axel Naumann //else don't tell Sema that we ended parsing: more input might come. 4948387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet 4959299f3fa85796613cc787a2062c9562d07c8613eChris Lattner return true; 4969299f3fa85796613cc787a2062c9562d07c8613eChris Lattner } 497a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 4980b7e678a11ece4288dc01aebb5b17e5eef8f8d2dJohn McCall ParsedAttributesWithRange attrs(AttrFactory); 4997f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCall MaybeParseCXX0XAttributes(attrs); 5007f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCall MaybeParseMicrosoftAttributes(attrs); 501e55329d6834647ba0e06f8a319e5d84c77310035Axel Naumann 5027f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCall Result = ParseExternalDeclaration(attrs); 5035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 5045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 5055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 5065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseTranslationUnit: 5075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// translation-unit: [C99 6.9] 508a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump/// external-declaration 509a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump/// translation-unit external-declaration 5105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencervoid Parser::ParseTranslationUnit() { 5118935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor Initialize(); 512a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 513682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner DeclGroupPtrTy Res; 51489307ffaf8acf4d6fdffd72b607ca4fbcfdffc9dSteve Naroff while (!ParseTopLevelDecl(Res)) 5155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /*parse them all*/; 5161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 51706f548596beef4c0a227a45cba996497f99566c0Chris Lattner ExitScope(); 51823c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor assert(getCurScope() == 0 && "Scope imbalance!"); 5195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 5205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 5215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseExternalDeclaration: 52290b93d6f6961edd8f17e089253d655892adc1ef7Chris Lattner/// 523c19923dda3d28f67aab4726cd40bb07032758383Douglas Gregor/// external-declaration: [C99 6.9], declaration: [C++ dcl.dcl] 524c3018153a11afe91849748a93d920040a571b76cChris Lattner/// function-definition 525c3018153a11afe91849748a93d920040a571b76cChris Lattner/// declaration 526a1d71aea847a50b3acbd187d2ae9e5c1ead0f4e2Douglas Gregor/// [C++0x] empty-declaration 5275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [GNU] asm-definition 528c3018153a11afe91849748a93d920040a571b76cChris Lattner/// [GNU] __extension__ external-declaration 5295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [OBJC] objc-class-definition 5305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [OBJC] objc-class-declaration 5315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [OBJC] objc-alias-declaration 5325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [OBJC] objc-protocol-definition 5335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [OBJC] objc-method-definition 5345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [OBJC] @end 535c19923dda3d28f67aab4726cd40bb07032758383Douglas Gregor/// [C++] linkage-specification 5365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [GNU] asm-definition: 5375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// simple-asm-expr ';' 5385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 539a1d71aea847a50b3acbd187d2ae9e5c1ead0f4e2Douglas Gregor/// [C++0x] empty-declaration: 540a1d71aea847a50b3acbd187d2ae9e5c1ead0f4e2Douglas Gregor/// ';' 541a1d71aea847a50b3acbd187d2ae9e5c1ead0f4e2Douglas Gregor/// 54245f965581935791a018df829a14dff53c1dd8f47Douglas Gregor/// [C++0x/GNU] 'extern' 'template' declaration 5437f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCallParser::DeclGroupPtrTy 5447f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCallParser::ParseExternalDeclaration(ParsedAttributesWithRange &attrs, 5457f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCall ParsingDeclSpec *DS) { 54625a767651d14db87aa03dd5fe3e011d877dd4100Argyrios Kyrtzidis DelayedCleanupPoint CleanupRAII(TopLevelDeclCleanupPool); 54736d36806f1972f7ec1d2a3f59155187278c56508Argyrios Kyrtzidis ParenBraceBracketBalancer BalancerRAIIObj(*this); 5487d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis 5497d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis if (PP.isCodeCompletionReached()) { 5507d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis cutOffParsing(); 5517d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis return DeclGroupPtrTy(); 5527d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis } 5537d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis 554d226f65006733ed7f709c3174f22ce33391cb58fJohn McCall Decl *SingleDecl = 0; 5555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (Tok.getKind()) { 556426fc94ed3bce15b55c43692537e3833388f0352Rafael Espindola case tok::annot_pragma_vis: 557426fc94ed3bce15b55c43692537e3833388f0352Rafael Espindola HandlePragmaVisibility(); 558426fc94ed3bce15b55c43692537e3833388f0352Rafael Espindola return DeclGroupPtrTy(); 559aa5ab26ed93382b812147f532dcbf4afb5494040Eli Friedman case tok::annot_pragma_pack: 560aa5ab26ed93382b812147f532dcbf4afb5494040Eli Friedman HandlePragmaPack(); 561aa5ab26ed93382b812147f532dcbf4afb5494040Eli Friedman return DeclGroupPtrTy(); 5625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::semi: 5634e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie Diag(Tok, getLangOpts().CPlusPlus0x ? 5647fe6208c3fa91f835813bb78236ef5c2bbf81053Richard Smith diag::warn_cxx98_compat_top_level_semi : diag::ext_top_level_semi) 5657fe6208c3fa91f835813bb78236ef5c2bbf81053Richard Smith << FixItHint::CreateRemoval(Tok.getLocation()); 5661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeToken(); 5685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // TODO: Invoke action for top-level semicolon. 569682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return DeclGroupPtrTy(); 57090b93d6f6961edd8f17e089253d655892adc1ef7Chris Lattner case tok::r_brace: 571883692ebd421c40b44e2c2665e5f54dade5621bcNico Weber Diag(Tok, diag::err_extraneous_closing_brace); 57290b93d6f6961edd8f17e089253d655892adc1ef7Chris Lattner ConsumeBrace(); 573682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return DeclGroupPtrTy(); 57490b93d6f6961edd8f17e089253d655892adc1ef7Chris Lattner case tok::eof: 57590b93d6f6961edd8f17e089253d655892adc1ef7Chris Lattner Diag(Tok, diag::err_expected_external_declaration); 576682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return DeclGroupPtrTy(); 577c3018153a11afe91849748a93d920040a571b76cChris Lattner case tok::kw___extension__: { 578c46d1a1f8af67a87689d7db9eaf96027282ccaeaChris Lattner // __extension__ silences extension warnings in the subexpression. 579c46d1a1f8af67a87689d7db9eaf96027282ccaeaChris Lattner ExtensionRAIIObject O(Diags); // Use RAII to do this. 58039146d6497ad5e7ca8ef639221e7b3e15d07c888Chris Lattner ConsumeToken(); 5817f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCall return ParseExternalDeclaration(attrs); 582c3018153a11afe91849748a93d920040a571b76cChris Lattner } 583dfab6cb59a703f2ce4d58371652ce879f4c85a09Anders Carlsson case tok::kw_asm: { 5847f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCall ProhibitAttributes(attrs); 585bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt 58621e006e51a7f9889f55f5bc7b3ca8b50d17571ecAbramo Bagnara SourceLocation StartLoc = Tok.getLocation(); 58721e006e51a7f9889f55f5bc7b3ca8b50d17571ecAbramo Bagnara SourceLocation EndLoc; 58821e006e51a7f9889f55f5bc7b3ca8b50d17571ecAbramo Bagnara ExprResult Result(ParseSimpleAsm(&EndLoc)); 589a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 5903f9424f3206b834b5dd0e7c403348651ab6fafbbAnders Carlsson ExpectAndConsume(tok::semi, diag::err_expected_semi_after, 5913f9424f3206b834b5dd0e7c403348651ab6fafbbAnders Carlsson "top-level asm block"); 592dfab6cb59a703f2ce4d58371652ce879f4c85a09Anders Carlsson 593682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner if (Result.isInvalid()) 594682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return DeclGroupPtrTy(); 59521e006e51a7f9889f55f5bc7b3ca8b50d17571ecAbramo Bagnara SingleDecl = Actions.ActOnFileScopeAsmDecl(Result.get(), StartLoc, EndLoc); 596682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner break; 597dfab6cb59a703f2ce4d58371652ce879f4c85a09Anders Carlsson } 5985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::at: 59995ed7784a335aca53b0c6e952cf31a4cfb633360Fariborz Jahanian return ParseObjCAtDirectives(); 6005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::minus: 6015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::plus: 6024e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!getLangOpts().ObjC1) { 603682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner Diag(Tok, diag::err_expected_external_declaration); 604682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner ConsumeToken(); 605682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return DeclGroupPtrTy(); 606682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner } 607682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner SingleDecl = ParseObjCMethodDefinition(); 608682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner break; 609791215b7a24666912c0b71175d2ca5ba082f666eDouglas Gregor case tok::code_completion: 61023c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Actions.CodeCompleteOrdinaryName(getCurScope(), 611849639d8b548519cc5a00c0c9253f0c0d525060dArgyrios Kyrtzidis CurParsedObjCImpl? Sema::PCC_ObjCImplementation 612f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall : Sema::PCC_Namespace); 6137d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis cutOffParsing(); 6147d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis return DeclGroupPtrTy(); 615f780abc21c39cd4731b9e38f2d2d9f7d1510bd7bDouglas Gregor case tok::kw_using: 6168f08cb7d0b97786b17ef05e05caa55aad4d6bd39Chris Lattner case tok::kw_namespace: 6175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::kw_typedef: 618adcac8824a9cff13f1ef61a69e38c1041cba12eeDouglas Gregor case tok::kw_template: 619adcac8824a9cff13f1ef61a69e38c1041cba12eeDouglas Gregor case tok::kw_export: // As in 'export template' 620511d7aba3b12853fdb88729a0313b80a60eab8adAnders Carlsson case tok::kw_static_assert: 621c6eb44b321c543c5bcf28727228a0cceced57e2ePeter Collingbourne case tok::kw__Static_assert: 622bae35118fc5cea2da08567dbb9763af7f906dae2Chris Lattner // A function definition cannot start with a these keywords. 62397144fc41a9419bf6d74fc9450e8ef3f6e11f7e0Chris Lattner { 62497144fc41a9419bf6d74fc9450e8ef3f6e11f7e0Chris Lattner SourceLocation DeclEnd; 625c5be7b0fc804d8e6f87298ec03c94d8cccd74f29Fariborz Jahanian StmtVector Stmts(Actions); 6267f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCall return ParseDeclaration(Stmts, Declarator::FileContext, DeclEnd, attrs); 62797144fc41a9419bf6d74fc9450e8ef3f6e11f7e0Chris Lattner } 628d078e641450bbc5a20df8d3b54f87b27e398acb3Sebastian Redl 6297306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor case tok::kw_static: 6307306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor // Parse (then ignore) 'static' prior to a template instantiation. This is 6317306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor // a GCC extension that we intentionally do not support. 6324e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (getLangOpts().CPlusPlus && NextToken().is(tok::kw_template)) { 6337306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor Diag(ConsumeToken(), diag::warn_static_inline_explicit_inst_ignored) 6347306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor << 0; 635d078e641450bbc5a20df8d3b54f87b27e398acb3Sebastian Redl SourceLocation DeclEnd; 636c5be7b0fc804d8e6f87298ec03c94d8cccd74f29Fariborz Jahanian StmtVector Stmts(Actions); 6377f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCall return ParseDeclaration(Stmts, Declarator::FileContext, DeclEnd, attrs); 6387306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor } 6397306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor goto dont_know; 6407306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor 6417306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor case tok::kw_inline: 6424e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (getLangOpts().CPlusPlus) { 6437306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor tok::TokenKind NextKind = NextToken().getKind(); 6447306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor 6457306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor // Inline namespaces. Allowed as an extension even in C++03. 6467306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor if (NextKind == tok::kw_namespace) { 6477306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor SourceLocation DeclEnd; 6487306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor StmtVector Stmts(Actions); 6497f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCall return ParseDeclaration(Stmts, Declarator::FileContext, DeclEnd, attrs); 6507306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor } 6517306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor 6527306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor // Parse (then ignore) 'inline' prior to a template instantiation. This is 6537306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor // a GCC extension that we intentionally do not support. 6547306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor if (NextKind == tok::kw_template) { 6557306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor Diag(ConsumeToken(), diag::warn_static_inline_explicit_inst_ignored) 6567306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor << 1; 6577306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor SourceLocation DeclEnd; 6587306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor StmtVector Stmts(Actions); 6597f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCall return ParseDeclaration(Stmts, Declarator::FileContext, DeclEnd, attrs); 6607306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor } 661d078e641450bbc5a20df8d3b54f87b27e398acb3Sebastian Redl } 662d078e641450bbc5a20df8d3b54f87b27e398acb3Sebastian Redl goto dont_know; 663d078e641450bbc5a20df8d3b54f87b27e398acb3Sebastian Redl 66445f965581935791a018df829a14dff53c1dd8f47Douglas Gregor case tok::kw_extern: 6654e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (getLangOpts().CPlusPlus && NextToken().is(tok::kw_template)) { 66645f965581935791a018df829a14dff53c1dd8f47Douglas Gregor // Extern templates 66745f965581935791a018df829a14dff53c1dd8f47Douglas Gregor SourceLocation ExternLoc = ConsumeToken(); 66845f965581935791a018df829a14dff53c1dd8f47Douglas Gregor SourceLocation TemplateLoc = ConsumeToken(); 6694e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie Diag(ExternLoc, getLangOpts().CPlusPlus0x ? 6709324583ad2afd09db8c9967cd05c4fa44bac9555Richard Smith diag::warn_cxx98_compat_extern_template : 6719324583ad2afd09db8c9967cd05c4fa44bac9555Richard Smith diag::ext_extern_template) << SourceRange(ExternLoc, TemplateLoc); 67245f965581935791a018df829a14dff53c1dd8f47Douglas Gregor SourceLocation DeclEnd; 67345f965581935791a018df829a14dff53c1dd8f47Douglas Gregor return Actions.ConvertDeclToDeclGroup( 6749241057266d3460392cbb7fec6ec942d3330ece3Argyrios Kyrtzidis ParseExplicitInstantiation(Declarator::FileContext, 6759241057266d3460392cbb7fec6ec942d3330ece3Argyrios Kyrtzidis ExternLoc, TemplateLoc, DeclEnd)); 67645f965581935791a018df829a14dff53c1dd8f47Douglas Gregor } 67745f965581935791a018df829a14dff53c1dd8f47Douglas Gregor // FIXME: Detect C++ linkage specifications here? 678d078e641450bbc5a20df8d3b54f87b27e398acb3Sebastian Redl goto dont_know; 6791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 680f986038beed360c031de8654cfba43a5d3184605Francois Pichet case tok::kw___if_exists: 681f986038beed360c031de8654cfba43a5d3184605Francois Pichet case tok::kw___if_not_exists: 682563a645de82231a55e221fe655b7188bf8369662Francois Pichet ParseMicrosoftIfExistsExternalDeclaration(); 683f986038beed360c031de8654cfba43a5d3184605Francois Pichet return DeclGroupPtrTy(); 6846aa52ec6b969faabf3764baf79d89810b8249a7eDouglas Gregor 6855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer default: 686d078e641450bbc5a20df8d3b54f87b27e398acb3Sebastian Redl dont_know: 6875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // We can't tell whether this is a function-definition or declaration yet. 6887f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCall if (DS) { 6897f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCall DS->takeAttributesFrom(attrs); 6907f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCall return ParseDeclarationOrFunctionDefinition(*DS); 6917f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCall } else { 6927f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCall return ParseDeclarationOrFunctionDefinition(attrs); 6937f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCall } 6945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 6951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 696682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner // This routine returns a DeclGroup, if the thing we parsed only contains a 697682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner // single decl, convert it now. 698682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return Actions.ConvertDeclToDeclGroup(SingleDecl); 6995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 7005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7011426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor/// \brief Determine whether the current token, if it occurs after a 7021426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor/// declarator, continues a declaration or declaration list. 703e4246a633b13197634225971b25df0cbdcec0c5dSean Huntbool Parser::isDeclarationAfterDeclarator() { 704e4246a633b13197634225971b25df0cbdcec0c5dSean Hunt // Check for '= delete' or '= default' 7054e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (getLangOpts().CPlusPlus && Tok.is(tok::equal)) { 706e4246a633b13197634225971b25df0cbdcec0c5dSean Hunt const Token &KW = NextToken(); 707e4246a633b13197634225971b25df0cbdcec0c5dSean Hunt if (KW.is(tok::kw_default) || KW.is(tok::kw_delete)) 708e4246a633b13197634225971b25df0cbdcec0c5dSean Hunt return false; 709e4246a633b13197634225971b25df0cbdcec0c5dSean Hunt } 710e4246a633b13197634225971b25df0cbdcec0c5dSean Hunt 7111426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor return Tok.is(tok::equal) || // int X()= -> not a function def 7121426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor Tok.is(tok::comma) || // int X(), -> not a function def 7131426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor Tok.is(tok::semi) || // int X(); -> not a function def 7141426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor Tok.is(tok::kw_asm) || // int X() __asm__ -> not a function def 7151426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor Tok.is(tok::kw___attribute) || // int X() __attr__ -> not a function def 7164e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie (getLangOpts().CPlusPlus && 7171426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor Tok.is(tok::l_paren)); // int X(0) -> not a function def [C++] 7181426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor} 7191426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor 7201426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor/// \brief Determine whether the current token, if it occurs after a 7211426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor/// declarator, indicates the start of a function definition. 722004659a56916f2f81ede507c12516c146d6c0df3Chris Lattnerbool Parser::isStartOfFunctionDefinition(const ParsingDeclarator &Declarator) { 723075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo Bagnara assert(Declarator.isFunctionDeclarator() && "Isn't a function declarator"); 7245d1c6198cfe55f8de025902c621c0721b640ff60Chris Lattner if (Tok.is(tok::l_brace)) // int X() {} 7255d1c6198cfe55f8de025902c621c0721b640ff60Chris Lattner return true; 7265d1c6198cfe55f8de025902c621c0721b640ff60Chris Lattner 727004659a56916f2f81ede507c12516c146d6c0df3Chris Lattner // Handle K&R C argument lists: int X(f) int f; {} 7284e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!getLangOpts().CPlusPlus && 729075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo Bagnara Declarator.getFunctionTypeInfo().isKNRPrototype()) 730004659a56916f2f81ede507c12516c146d6c0df3Chris Lattner return isDeclarationSpecifier(); 731e4246a633b13197634225971b25df0cbdcec0c5dSean Hunt 7324e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (getLangOpts().CPlusPlus && Tok.is(tok::equal)) { 733e4246a633b13197634225971b25df0cbdcec0c5dSean Hunt const Token &KW = NextToken(); 734e4246a633b13197634225971b25df0cbdcec0c5dSean Hunt return KW.is(tok::kw_default) || KW.is(tok::kw_delete); 735e4246a633b13197634225971b25df0cbdcec0c5dSean Hunt } 736004659a56916f2f81ede507c12516c146d6c0df3Chris Lattner 7375d1c6198cfe55f8de025902c621c0721b640ff60Chris Lattner return Tok.is(tok::colon) || // X() : Base() {} (used for ctors) 7385d1c6198cfe55f8de025902c621c0721b640ff60Chris Lattner Tok.is(tok::kw_try); // X() try { ... } 7391426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor} 7401426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor 7415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseDeclarationOrFunctionDefinition - Parse either a function-definition or 7425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// a declaration. We can't tell which we have until we read up to the 743c4b4e7b8f6ca9b036824e048af49cd2a52b57cdfDouglas Gregor/// compound-statement in function-definition. TemplateParams, if 744c4b4e7b8f6ca9b036824e048af49cd2a52b57cdfDouglas Gregor/// non-NULL, provides the template parameters when we're parsing a 7451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// C++ template-declaration. 7465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 7475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// function-definition: [C99 6.9.1] 748a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner/// decl-specs declarator declaration-list[opt] compound-statement 749a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner/// [C90] function-definition: [C99 6.7.1] - implicit int result 750a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump/// [C90] decl-specs[opt] declarator declaration-list[opt] compound-statement 751a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner/// 7525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// declaration: [C99 6.7] 753697e15f2a028f8997cccb24ecd05099988cfb1a9Chris Lattner/// declaration-specifiers init-declarator-list[opt] ';' 754697e15f2a028f8997cccb24ecd05099988cfb1a9Chris Lattner/// [!C99] init-declarator-list ';' [TODO: warn in c99 mode] 7555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [OMP] threadprivate-directive [TODO] 7565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 757682bf92db408a6cbc3d37b5496a99b6ef85041ecChris LattnerParser::DeclGroupPtrTy 7583acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz JahanianParser::ParseDeclarationOrFunctionDefinition(ParsingDeclSpec &DS, 759bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt AccessSpecifier AS) { 7605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Parse the common declaration-specifiers piece. 7610efc2c1716be4f1c5f1343cad3b047e74861f030Douglas Gregor ParseDeclarationSpecifiers(DS, ParsedTemplateInfo(), AS, DSC_top_level); 762a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 7635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // C99 6.7.2.3p6: Handle "struct-or-union identifier;", "enum { X };" 7645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // declaration-specifiers init-declarator-list[opt] ';' 765000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.is(tok::semi)) { 7665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeToken(); 767d226f65006733ed7f709c3174f22ce33391cb58fJohn McCall Decl *TheDecl = Actions.ParsedFreeStandingDeclSpec(getCurScope(), AS, DS); 76854abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall DS.complete(TheDecl); 769682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return Actions.ConvertDeclToDeclGroup(TheDecl); 7705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 771a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 772246e70f69cb8aeb67225c54690f1c6b25abd5a86Daniel Dunbar // ObjC2 allows prefix attributes on class interfaces and protocols. 773246e70f69cb8aeb67225c54690f1c6b25abd5a86Daniel Dunbar // FIXME: This still needs better diagnostics. We should only accept 774246e70f69cb8aeb67225c54690f1c6b25abd5a86Daniel Dunbar // attributes here, no types, etc. 7754e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (getLangOpts().ObjC2 && Tok.is(tok::at)) { 776dac269b65eed82182fc3e96566dedd6562dfe11eSteve Naroff SourceLocation AtLoc = ConsumeToken(); // the "@" 7771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (!Tok.isObjCAtKeyword(tok::objc_interface) && 778246e70f69cb8aeb67225c54690f1c6b25abd5a86Daniel Dunbar !Tok.isObjCAtKeyword(tok::objc_protocol)) { 779246e70f69cb8aeb67225c54690f1c6b25abd5a86Daniel Dunbar Diag(Tok, diag::err_objc_unexpected_attr); 780cb53b361bce341c8591333c6997f62e480acc0b4Chris Lattner SkipUntil(tok::semi); // FIXME: better skip? 781682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return DeclGroupPtrTy(); 782cb53b361bce341c8591333c6997f62e480acc0b4Chris Lattner } 783d8ac05753dc4506224d445ff98399c01da3136e5John McCall 78454abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall DS.abort(); 78554abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall 7860de2ae28c603322f05e2d9200c7d457c8b928983Fariborz Jahanian const char *PrevSpec = 0; 787fec54013fcd0eb72642741584ca04c1bc292bef8John McCall unsigned DiagID; 788fec54013fcd0eb72642741584ca04c1bc292bef8John McCall if (DS.SetTypeSpecType(DeclSpec::TST_unspecified, AtLoc, PrevSpec, DiagID)) 789fec54013fcd0eb72642741584ca04c1bc292bef8John McCall Diag(AtLoc, DiagID) << PrevSpec; 7901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 791246e70f69cb8aeb67225c54690f1c6b25abd5a86Daniel Dunbar if (Tok.isObjCAtKeyword(tok::objc_protocol)) 792bd9482d859a74bf2c45ef8b8aedec61c0e1c8374Douglas Gregor return ParseObjCAtProtocolDeclaration(AtLoc, DS.getAttributes()); 793bd9482d859a74bf2c45ef8b8aedec61c0e1c8374Douglas Gregor 794bd9482d859a74bf2c45ef8b8aedec61c0e1c8374Douglas Gregor return Actions.ConvertDeclToDeclGroup( 795bd9482d859a74bf2c45ef8b8aedec61c0e1c8374Douglas Gregor ParseObjCAtInterfaceDeclaration(AtLoc, DS.getAttributes())); 796dac269b65eed82182fc3e96566dedd6562dfe11eSteve Naroff } 797a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 798c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner // If the declspec consisted only of 'extern' and we have a string 799c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner // literal following it, this must be a C++ linkage specifier like 800c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner // 'extern "C"'. 8014e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (Tok.is(tok::string_literal) && getLangOpts().CPlusPlus && 802c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner DS.getStorageClassSpec() == DeclSpec::SCS_extern && 803682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner DS.getParsedSpecifiers() == DeclSpec::PQ_StorageClassSpecifier) { 804d226f65006733ed7f709c3174f22ce33391cb58fJohn McCall Decl *TheDecl = ParseLinkage(DS, Declarator::FileContext); 805682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return Actions.ConvertDeclToDeclGroup(TheDecl); 806682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner } 807c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner 808d8ac05753dc4506224d445ff98399c01da3136e5John McCall return ParseDeclGroup(DS, Declarator::FileContext, true); 8095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 8105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 8113acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz JahanianParser::DeclGroupPtrTy 8127f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCallParser::ParseDeclarationOrFunctionDefinition(ParsedAttributes &attrs, 8133acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz Jahanian AccessSpecifier AS) { 8143acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz Jahanian ParsingDeclSpec DS(*this); 8157f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCall DS.takeAttributesFrom(attrs); 8169735c5e60027b26a809df19677ff16a4d13f1321Fariborz Jahanian // Must temporarily exit the objective-c container scope for 8179735c5e60027b26a809df19677ff16a4d13f1321Fariborz Jahanian // parsing c constructs and re-enter objc container scope 8189735c5e60027b26a809df19677ff16a4d13f1321Fariborz Jahanian // afterwards. 8199735c5e60027b26a809df19677ff16a4d13f1321Fariborz Jahanian ObjCDeclContextSwitch ObjCDC(*this); 8209735c5e60027b26a809df19677ff16a4d13f1321Fariborz Jahanian 8219735c5e60027b26a809df19677ff16a4d13f1321Fariborz Jahanian return ParseDeclarationOrFunctionDefinition(DS, AS); 8223acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz Jahanian} 8233acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz Jahanian 8245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseFunctionDefinition - We parsed and verified that the specified 8255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// Declarator is well formed. If this is a K&R-style function, read the 8265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// parameters declaration-list, then start the compound-statement. 8275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 828a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner/// function-definition: [C99 6.9.1] 829a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner/// decl-specs declarator declaration-list[opt] compound-statement 830a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner/// [C90] function-definition: [C99 6.7.1] - implicit int result 831a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump/// [C90] decl-specs[opt] declarator declaration-list[opt] compound-statement 8327ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor/// [C++] function-definition: [C++ 8.4] 83323c4b1883b13dc17484b7214091b73f3ba29096eChris Lattner/// decl-specifier-seq[opt] declarator ctor-initializer[opt] 83423c4b1883b13dc17484b7214091b73f3ba29096eChris Lattner/// function-body 8357ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor/// [C++] function-definition: [C++ 8.4] 836d3a413d3b8eb39bcee5944bc545d9997c1abe492Sebastian Redl/// decl-specifier-seq[opt] declarator function-try-block 8375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 838d226f65006733ed7f709c3174f22ce33391cb58fJohn McCallDecl *Parser::ParseFunctionDefinition(ParsingDeclarator &D, 839c24a2335677f3d1bd2cab1019ac445d650f52123DeLesley Hutchins const ParsedTemplateInfo &TemplateInfo, 840c24a2335677f3d1bd2cab1019ac445d650f52123DeLesley Hutchins LateParsedAttrList *LateParsedAttrs) { 84128bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley // Poison the SEH identifiers so they are flagged as illegal in function bodies 84228bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley PoisonSEHIdentifiersRAIIObject PoisonSEHIdentifiers(*this, true); 843075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo Bagnara const DeclaratorChunk::FunctionTypeInfo &FTI = D.getFunctionTypeInfo(); 844a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 845a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner // If this is C90 and the declspecs were completely missing, fudge in an 846a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner // implicit int. We do this here because this is the only place where 847a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner // declaration-specifiers are completely optional in the grammar. 8484e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (getLangOpts().ImplicitInt && D.getDeclSpec().isEmpty()) { 849a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner const char *PrevSpec; 850fec54013fcd0eb72642741584ca04c1bc292bef8John McCall unsigned DiagID; 85131c286803c60c59d314525e047d0e72f9a1cb55bChris Lattner D.getMutableDeclSpec().SetTypeSpecType(DeclSpec::TST_int, 85231c286803c60c59d314525e047d0e72f9a1cb55bChris Lattner D.getIdentifierLoc(), 853fec54013fcd0eb72642741584ca04c1bc292bef8John McCall PrevSpec, DiagID); 854ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl D.SetRangeBegin(D.getDeclSpec().getSourceRange().getBegin()); 855a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner } 856a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 8575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If this declaration was formed with a K&R-style identifier list for the 8585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // arguments, parse declarations for all of the args next. 8595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // int foo(a,b) int a; float b; {} 860004659a56916f2f81ede507c12516c146d6c0df3Chris Lattner if (FTI.isKNRPrototype()) 8615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ParseKNRParamDeclarations(D); 8625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 8637ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor // We should have either an opening brace or, in a C++ constructor, 8647ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor // we may have a colon. 865758afbcc86ef15f8d433f5f87db1495e50effeb3Douglas Gregor if (Tok.isNot(tok::l_brace) && 8664e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie (!getLangOpts().CPlusPlus || 867cd10dec673680fd18a2e5a27646173780c059d32Sean Hunt (Tok.isNot(tok::colon) && Tok.isNot(tok::kw_try) && 868cd10dec673680fd18a2e5a27646173780c059d32Sean Hunt Tok.isNot(tok::equal)))) { 8695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(Tok, diag::err_expected_fn_body); 8705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 8715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Skip over garbage, until we get to '{'. Don't eat the '{'. 8725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SkipUntil(tok::l_brace, true, true); 873a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 8745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If we didn't find the '{', bail out. 875000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.isNot(tok::l_brace)) 876d226f65006733ed7f709c3174f22ce33391cb58fJohn McCall return 0; 8775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 878a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 879c24a2335677f3d1bd2cab1019ac445d650f52123DeLesley Hutchins // Check to make sure that any normal attributes are allowed to be on 880c24a2335677f3d1bd2cab1019ac445d650f52123DeLesley Hutchins // a definition. Late parsed attributes are checked at the end. 881c24a2335677f3d1bd2cab1019ac445d650f52123DeLesley Hutchins if (Tok.isNot(tok::equal)) { 882c24a2335677f3d1bd2cab1019ac445d650f52123DeLesley Hutchins AttributeList *DtorAttrs = D.getAttributes(); 883c24a2335677f3d1bd2cab1019ac445d650f52123DeLesley Hutchins while (DtorAttrs) { 884c24a2335677f3d1bd2cab1019ac445d650f52123DeLesley Hutchins if (!IsThreadSafetyAttribute(DtorAttrs->getName()->getName())) { 885c24a2335677f3d1bd2cab1019ac445d650f52123DeLesley Hutchins Diag(DtorAttrs->getLoc(), diag::warn_attribute_on_function_definition) 886c24a2335677f3d1bd2cab1019ac445d650f52123DeLesley Hutchins << DtorAttrs->getName()->getName(); 887c24a2335677f3d1bd2cab1019ac445d650f52123DeLesley Hutchins } 888c24a2335677f3d1bd2cab1019ac445d650f52123DeLesley Hutchins DtorAttrs = DtorAttrs->getNext(); 889c24a2335677f3d1bd2cab1019ac445d650f52123DeLesley Hutchins } 890c24a2335677f3d1bd2cab1019ac445d650f52123DeLesley Hutchins } 891c24a2335677f3d1bd2cab1019ac445d650f52123DeLesley Hutchins 8928387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet // In delayed template parsing mode, for function template we consume the 8938387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet // tokens and store them for late parsing at the end of the translation unit. 8944e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (getLangOpts().DelayedTemplateParsing && 8958387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet TemplateInfo.Kind == ParsedTemplateInfo::Template) { 8968387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet MultiTemplateParamsArg TemplateParameterLists(Actions, 8978387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet TemplateInfo.TemplateParams->data(), 8988387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet TemplateInfo.TemplateParams->size()); 8998387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet 9008387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet ParseScope BodyScope(this, Scope::FnScope|Scope::DeclScope); 9018387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet Scope *ParentScope = getCurScope()->getParent(); 9028387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet 90345fa560c72441069d9e4eb1e66efd87349caa552Douglas Gregor D.setFunctionDefinitionKind(FDK_Definition); 9048387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet Decl *DP = Actions.HandleDeclarator(ParentScope, D, 9052c712f50cd56eaf3662989b556e9c6b1e8fcd11aKaelyn Uhrain move(TemplateParameterLists)); 9068387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet D.complete(DP); 9078387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet D.getMutableDeclSpec().abort(); 9088387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet 9098387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet if (DP) { 910e1fca502e7f1349e9b4520a4ca9a02413bcf2b14Francois Pichet LateParsedTemplatedFunction *LPT = new LateParsedTemplatedFunction(DP); 9118387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet 9128387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet FunctionDecl *FnD = 0; 9138387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet if (FunctionTemplateDecl *FunTmpl = dyn_cast<FunctionTemplateDecl>(DP)) 9148387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet FnD = FunTmpl->getTemplatedDecl(); 9158387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet else 9168387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet FnD = cast<FunctionDecl>(DP); 917d4a0caf78e7c18e7aca65fbfd799a6c024ff51fbFrancois Pichet Actions.CheckForFunctionRedefinition(FnD); 9188387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet 9198387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet LateParsedTemplateMap[FnD] = LPT; 9208387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet Actions.MarkAsLateParsedTemplate(FnD); 9218387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet LexTemplateFunctionForLateParsing(LPT->Toks); 9228387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet } else { 9238387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet CachedTokens Toks; 9248387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet LexTemplateFunctionForLateParsing(Toks); 9258387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet } 9268387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet return DP; 9278387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet } 9288387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet 929b652cea7d7b70ebe3744fb6d72c9ad9cf3c95429Chris Lattner // Enter a scope for the function body. 9308935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor ParseScope BodyScope(this, Scope::FnScope|Scope::DeclScope); 931a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 932b652cea7d7b70ebe3744fb6d72c9ad9cf3c95429Chris Lattner // Tell the actions module that we have entered a function definition with the 933b652cea7d7b70ebe3744fb6d72c9ad9cf3c95429Chris Lattner // specified Declarator for the function. 934d226f65006733ed7f709c3174f22ce33391cb58fJohn McCall Decl *Res = TemplateInfo.TemplateParams? 93523c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Actions.ActOnStartOfFunctionTemplateDef(getCurScope(), 936f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall MultiTemplateParamsArg(Actions, 93752591bf224b2c43e2b00e265bb8599a620081925Douglas Gregor TemplateInfo.TemplateParams->data(), 93852591bf224b2c43e2b00e265bb8599a620081925Douglas Gregor TemplateInfo.TemplateParams->size()), 93952591bf224b2c43e2b00e265bb8599a620081925Douglas Gregor D) 94023c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor : Actions.ActOnStartOfFunctionDef(getCurScope(), D); 941a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 94254abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall // Break out of the ParsingDeclarator context before we parse the body. 94354abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall D.complete(Res); 94454abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall 94554abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall // Break out of the ParsingDeclSpec context, too. This const_cast is 94654abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall // safe because we're always the sole owner. 94754abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall D.getMutableDeclSpec().abort(); 94854abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall 949cd10dec673680fd18a2e5a27646173780c059d32Sean Hunt if (Tok.is(tok::equal)) { 9504e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie assert(getLangOpts().CPlusPlus && "Only C++ function definitions have '='"); 951cd10dec673680fd18a2e5a27646173780c059d32Sean Hunt ConsumeToken(); 952cd10dec673680fd18a2e5a27646173780c059d32Sean Hunt 953cd10dec673680fd18a2e5a27646173780c059d32Sean Hunt Actions.ActOnFinishFunctionBody(Res, 0, false); 954cd10dec673680fd18a2e5a27646173780c059d32Sean Hunt 955cd10dec673680fd18a2e5a27646173780c059d32Sean Hunt bool Delete = false; 956cd10dec673680fd18a2e5a27646173780c059d32Sean Hunt SourceLocation KWLoc; 957cd10dec673680fd18a2e5a27646173780c059d32Sean Hunt if (Tok.is(tok::kw_delete)) { 9584e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie Diag(Tok, getLangOpts().CPlusPlus0x ? 9597fe6208c3fa91f835813bb78236ef5c2bbf81053Richard Smith diag::warn_cxx98_compat_deleted_function : 960d7c56e1114bfe7d461786903bb720d2c6efc05a1Richard Smith diag::ext_deleted_function); 961cd10dec673680fd18a2e5a27646173780c059d32Sean Hunt 962cd10dec673680fd18a2e5a27646173780c059d32Sean Hunt KWLoc = ConsumeToken(); 963cd10dec673680fd18a2e5a27646173780c059d32Sean Hunt Actions.SetDeclDeleted(Res, KWLoc); 964cd10dec673680fd18a2e5a27646173780c059d32Sean Hunt Delete = true; 965cd10dec673680fd18a2e5a27646173780c059d32Sean Hunt } else if (Tok.is(tok::kw_default)) { 9664e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie Diag(Tok, getLangOpts().CPlusPlus0x ? 9677fe6208c3fa91f835813bb78236ef5c2bbf81053Richard Smith diag::warn_cxx98_compat_defaulted_function : 968d7c56e1114bfe7d461786903bb720d2c6efc05a1Richard Smith diag::ext_defaulted_function); 969cd10dec673680fd18a2e5a27646173780c059d32Sean Hunt 970cd10dec673680fd18a2e5a27646173780c059d32Sean Hunt KWLoc = ConsumeToken(); 971cd10dec673680fd18a2e5a27646173780c059d32Sean Hunt Actions.SetDeclDefaulted(Res, KWLoc); 972cd10dec673680fd18a2e5a27646173780c059d32Sean Hunt } else { 973cd10dec673680fd18a2e5a27646173780c059d32Sean Hunt llvm_unreachable("function definition after = not 'delete' or 'default'"); 974cd10dec673680fd18a2e5a27646173780c059d32Sean Hunt } 975cd10dec673680fd18a2e5a27646173780c059d32Sean Hunt 976cd10dec673680fd18a2e5a27646173780c059d32Sean Hunt if (Tok.is(tok::comma)) { 977cd10dec673680fd18a2e5a27646173780c059d32Sean Hunt Diag(KWLoc, diag::err_default_delete_in_multiple_declaration) 978cd10dec673680fd18a2e5a27646173780c059d32Sean Hunt << Delete; 979cd10dec673680fd18a2e5a27646173780c059d32Sean Hunt SkipUntil(tok::semi); 980cd10dec673680fd18a2e5a27646173780c059d32Sean Hunt } else { 981cd10dec673680fd18a2e5a27646173780c059d32Sean Hunt ExpectAndConsume(tok::semi, diag::err_expected_semi_after, 982cd10dec673680fd18a2e5a27646173780c059d32Sean Hunt Delete ? "delete" : "default", tok::semi); 983cd10dec673680fd18a2e5a27646173780c059d32Sean Hunt } 984cd10dec673680fd18a2e5a27646173780c059d32Sean Hunt 985cd10dec673680fd18a2e5a27646173780c059d32Sean Hunt return Res; 986cd10dec673680fd18a2e5a27646173780c059d32Sean Hunt } 987cd10dec673680fd18a2e5a27646173780c059d32Sean Hunt 988d3a413d3b8eb39bcee5944bc545d9997c1abe492Sebastian Redl if (Tok.is(tok::kw_try)) 989c9977d09a2de7f7d2245973413d4caf86c736640Douglas Gregor return ParseFunctionTryBlock(Res, BodyScope); 990d3a413d3b8eb39bcee5944bc545d9997c1abe492Sebastian Redl 9917ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor // If we have a colon, then we're probably parsing a C++ 9927ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor // ctor-initializer. 993d6ca8da0f5a4115813055729faaa5128e994806dJohn McCall if (Tok.is(tok::colon)) { 9947ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor ParseConstructorInitializer(Res); 995d6ca8da0f5a4115813055729faaa5128e994806dJohn McCall 996d6ca8da0f5a4115813055729faaa5128e994806dJohn McCall // Recover from error. 997d6ca8da0f5a4115813055729faaa5128e994806dJohn McCall if (!Tok.is(tok::l_brace)) { 998c9977d09a2de7f7d2245973413d4caf86c736640Douglas Gregor BodyScope.Exit(); 9999ae2f076ca5ab1feb3ba95629099ec2319833701John McCall Actions.ActOnFinishFunctionBody(Res, 0); 1000d6ca8da0f5a4115813055729faaa5128e994806dJohn McCall return Res; 1001d6ca8da0f5a4115813055729faaa5128e994806dJohn McCall } 1002d6ca8da0f5a4115813055729faaa5128e994806dJohn McCall } else 1003393612e6c7727f1fee50039254d9f434364cc0b2Fariborz Jahanian Actions.ActOnDefaultCtorInitializers(Res); 10047ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor 1005c24a2335677f3d1bd2cab1019ac445d650f52123DeLesley Hutchins // Late attributes are parsed in the same scope as the function body. 1006c24a2335677f3d1bd2cab1019ac445d650f52123DeLesley Hutchins if (LateParsedAttrs) 1007c24a2335677f3d1bd2cab1019ac445d650f52123DeLesley Hutchins ParseLexedAttributeList(*LateParsedAttrs, Res, false, true); 1008c24a2335677f3d1bd2cab1019ac445d650f52123DeLesley Hutchins 1009c9977d09a2de7f7d2245973413d4caf86c736640Douglas Gregor return ParseFunctionStatementBody(Res, BodyScope); 10105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 10115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 10125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseKNRParamDeclarations - Parse 'declaration-list[opt]' which provides 10135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// types for a function with a K&R-style identifier list for arguments. 10145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencervoid Parser::ParseKNRParamDeclarations(Declarator &D) { 10155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // We know that the top-level of this declarator is a function. 1016075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo Bagnara DeclaratorChunk::FunctionTypeInfo &FTI = D.getFunctionTypeInfo(); 10175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 101804421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner // Enter function-declaration scope, limiting any declarators to the 101904421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner // function prototype scope, including parameter declarators. 10203218c4bb3b5d7250f12420de6db7ef3e3f805a75Douglas Gregor ParseScope PrototypeScope(this, Scope::FunctionPrototypeScope|Scope::DeclScope); 102104421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner 10225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Read all the argument declarations. 10235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer while (isDeclarationSpecifier()) { 10245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation DSStart = Tok.getLocation(); 1025a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 10265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Parse the common declaration-specifiers piece. 10270b7e678a11ece4288dc01aebb5b17e5eef8f8d2dJohn McCall DeclSpec DS(AttrFactory); 10285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ParseDeclarationSpecifiers(DS); 1029a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 10305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // C99 6.9.1p6: 'each declaration in the declaration list shall have at 10315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // least one declarator'. 10325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // NOTE: GCC just makes this an ext-warn. It's not clear what it does with 10335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // the declarations though. It's trivial to ignore them, really hard to do 10345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // anything else with them. 1035000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.is(tok::semi)) { 10365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(DSStart, diag::err_declaration_does_not_declare_param); 10375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeToken(); 10385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer continue; 10395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1040a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 10415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // C99 6.9.1p6: Declarations shall contain no storage-class specifiers other 10425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // than register. 10435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (DS.getStorageClassSpec() != DeclSpec::SCS_unspecified && 10445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DS.getStorageClassSpec() != DeclSpec::SCS_register) { 10455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(DS.getStorageClassSpecLoc(), 10465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer diag::err_invalid_storage_class_in_func_decl); 10475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DS.ClearStorageClassSpecs(); 10485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 10495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (DS.isThreadSpecified()) { 10505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(DS.getThreadSpecLoc(), 10515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer diag::err_invalid_storage_class_in_func_decl); 10525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DS.ClearStorageClassSpecs(); 10535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1054a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 10555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Parse the first declarator attached to this declspec. 10565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Declarator ParmDeclarator(DS, Declarator::KNRTypeListContext); 10575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ParseDeclarator(ParmDeclarator); 10585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 10595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Handle the full declarator list. 10605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer while (1) { 10615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If attributes are present, parse them. 10627f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCall MaybeParseGNUAttributes(ParmDeclarator); 1063a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 10645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Ask the actions module to compute the type for this declarator. 1065d226f65006733ed7f709c3174f22ce33391cb58fJohn McCall Decl *Param = 106623c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Actions.ActOnParamDeclarator(getCurScope(), ParmDeclarator); 10672bd42fadafddc8acf744b57a970bdc96a077c617Steve Naroff 1068a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump if (Param && 10695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // A missing identifier has already been diagnosed. 10705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ParmDeclarator.getIdentifier()) { 10715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 10725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Scan the argument list looking for the correct param to apply this 10735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // type. 10745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer for (unsigned i = 0; ; ++i) { 10755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // C99 6.9.1p6: those declarators shall declare only identifiers from 10765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // the identifier list. 10775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (i == FTI.NumArgs) { 10781ab3b96de160e4fbffec2a776e284a48a3bb543dChris Lattner Diag(ParmDeclarator.getIdentifierLoc(), diag::err_no_matching_param) 10796898e33d0b28346a4dbe9a666e0e4188fea80460Chris Lattner << ParmDeclarator.getIdentifier(); 10805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 10815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1082a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 10835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (FTI.ArgInfo[i].Ident == ParmDeclarator.getIdentifier()) { 10845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Reject redefinitions of parameters. 108504421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner if (FTI.ArgInfo[i].Param) { 10865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(ParmDeclarator.getIdentifierLoc(), 10871ab3b96de160e4fbffec2a776e284a48a3bb543dChris Lattner diag::err_param_redefinition) 10886898e33d0b28346a4dbe9a666e0e4188fea80460Chris Lattner << ParmDeclarator.getIdentifier(); 10895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } else { 109004421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner FTI.ArgInfo[i].Param = Param; 10915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 10925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 10935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 10945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 10955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 10965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 10975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If we don't have a comma, it is either the end of the list (a ';') or 10985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // an error, bail out. 1099000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.isNot(tok::comma)) 11005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 1101a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 11027984de35644701c0d94336da7f2215d4c26d9f5bRichard Smith ParmDeclarator.clear(); 11037984de35644701c0d94336da7f2215d4c26d9f5bRichard Smith 11045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Consume the comma. 11057984de35644701c0d94336da7f2215d4c26d9f5bRichard Smith ParmDeclarator.setCommaLoc(ConsumeToken()); 1106a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 11075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Parse the next declarator. 11085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ParseDeclarator(ParmDeclarator); 11095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1110a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 1111000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.is(tok::semi)) { 11125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeToken(); 11135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } else { 11145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(Tok, diag::err_parse_error); 11155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Skip to end of block or statement 11165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SkipUntil(tok::semi, true); 1117000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.is(tok::semi)) 11185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeToken(); 11195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 11205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1121a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 11225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // The actions module must verify that all arguments were declared. 112323c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Actions.ActOnFinishKNRParamDeclarations(getCurScope(), D, Tok.getLocation()); 11245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 11255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 11265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 11275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseAsmStringLiteral - This is just a normal string-literal, but is not 11285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// allowed to be a wide string, and is not subject to character translation. 11295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 11305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [GNU] asm-string-literal: 11315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// string-literal 11325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 113360d7b3a319d84d688752be3870615ac0f111fb16John McCallParser::ExprResult Parser::ParseAsmStringLiteral() { 11347f422287a2ee7e515beb715f1f8915e9331469eeTed Kremenek switch (Tok.getKind()) { 11357f422287a2ee7e515beb715f1f8915e9331469eeTed Kremenek case tok::string_literal: 11367f422287a2ee7e515beb715f1f8915e9331469eeTed Kremenek break; 113799831e4677a7e2e051af636221694d60ba31fcdbRichard Smith case tok::utf8_string_literal: 113899831e4677a7e2e051af636221694d60ba31fcdbRichard Smith case tok::utf16_string_literal: 113999831e4677a7e2e051af636221694d60ba31fcdbRichard Smith case tok::utf32_string_literal: 11407f422287a2ee7e515beb715f1f8915e9331469eeTed Kremenek case tok::wide_string_literal: { 11417f422287a2ee7e515beb715f1f8915e9331469eeTed Kremenek SourceLocation L = Tok.getLocation(); 11427f422287a2ee7e515beb715f1f8915e9331469eeTed Kremenek Diag(Tok, diag::err_asm_operand_wide_string_literal) 114399831e4677a7e2e051af636221694d60ba31fcdbRichard Smith << (Tok.getKind() == tok::wide_string_literal) 11447f422287a2ee7e515beb715f1f8915e9331469eeTed Kremenek << SourceRange(L, L); 11457f422287a2ee7e515beb715f1f8915e9331469eeTed Kremenek return ExprError(); 11467f422287a2ee7e515beb715f1f8915e9331469eeTed Kremenek } 11477f422287a2ee7e515beb715f1f8915e9331469eeTed Kremenek default: 11487f422287a2ee7e515beb715f1f8915e9331469eeTed Kremenek Diag(Tok, diag::err_expected_string_literal); 11497f422287a2ee7e515beb715f1f8915e9331469eeTed Kremenek return ExprError(); 11505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1151a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 115299831e4677a7e2e051af636221694d60ba31fcdbRichard Smith return ParseStringLiteralExpression(); 11535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 11545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 11555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseSimpleAsm 11565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 11575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [GNU] simple-asm-expr: 11585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 'asm' '(' asm-string-literal ')' 11595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 116060d7b3a319d84d688752be3870615ac0f111fb16John McCallParser::ExprResult Parser::ParseSimpleAsm(SourceLocation *EndLoc) { 1161000732226610650837478cba97843d19b75f648eChris Lattner assert(Tok.is(tok::kw_asm) && "Not an asm!"); 1162dfab6cb59a703f2ce4d58371652ce879f4c85a09Anders Carlsson SourceLocation Loc = ConsumeToken(); 1163a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 11647a6ae743b2ecfdfadadf7df53b569a9a3871a8fdJohn McCall if (Tok.is(tok::kw_volatile)) { 1165841d5e607f81bf5627e47d0c62ead29f28b5b0c2John McCall // Remove from the end of 'asm' to the end of 'volatile'. 1166841d5e607f81bf5627e47d0c62ead29f28b5b0c2John McCall SourceRange RemovalRange(PP.getLocForEndOfToken(Loc), 1167841d5e607f81bf5627e47d0c62ead29f28b5b0c2John McCall PP.getLocForEndOfToken(Tok.getLocation())); 1168841d5e607f81bf5627e47d0c62ead29f28b5b0c2John McCall 1169841d5e607f81bf5627e47d0c62ead29f28b5b0c2John McCall Diag(Tok, diag::warn_file_asm_volatile) 1170849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor << FixItHint::CreateRemoval(RemovalRange); 11717a6ae743b2ecfdfadadf7df53b569a9a3871a8fdJohn McCall ConsumeToken(); 11727a6ae743b2ecfdfadadf7df53b569a9a3871a8fdJohn McCall } 11737a6ae743b2ecfdfadadf7df53b569a9a3871a8fdJohn McCall 11744a8dfb511e8f84b2e38b7a86d8ddf05ac1e1a41bDouglas Gregor BalancedDelimiterTracker T(*this, tok::l_paren); 11754a8dfb511e8f84b2e38b7a86d8ddf05ac1e1a41bDouglas Gregor if (T.consumeOpen()) { 11761ab3b96de160e4fbffec2a776e284a48a3bb543dChris Lattner Diag(Tok, diag::err_expected_lparen_after) << "asm"; 117761364dddc33383e62cfe3b841dbc0f471280d95bSebastian Redl return ExprError(); 11785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1179a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 118060d7b3a319d84d688752be3870615ac0f111fb16John McCall ExprResult Result(ParseAsmStringLiteral()); 1181a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 1182ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl if (Result.isInvalid()) { 1183ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl SkipUntil(tok::r_paren, true, true); 1184ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl if (EndLoc) 1185ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl *EndLoc = Tok.getLocation(); 1186ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl ConsumeAnyToken(); 1187ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl } else { 11884a8dfb511e8f84b2e38b7a86d8ddf05ac1e1a41bDouglas Gregor // Close the paren and get the location of the end bracket 11894a8dfb511e8f84b2e38b7a86d8ddf05ac1e1a41bDouglas Gregor T.consumeClose(); 1190ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl if (EndLoc) 11914a8dfb511e8f84b2e38b7a86d8ddf05ac1e1a41bDouglas Gregor *EndLoc = T.getCloseLocation(); 1192ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl } 1193a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 1194effa8d1c97b00a3f53e972b0e61d9aade5ea1c57Sebastian Redl return move(Result); 11955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 11965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 119725a767651d14db87aa03dd5fe3e011d877dd4100Argyrios Kyrtzidis/// \brief Get the TemplateIdAnnotation from the token and put it in the 119825a767651d14db87aa03dd5fe3e011d877dd4100Argyrios Kyrtzidis/// cleanup pool so that it gets destroyed when parsing the current top level 119925a767651d14db87aa03dd5fe3e011d877dd4100Argyrios Kyrtzidis/// declaration is finished. 120025a767651d14db87aa03dd5fe3e011d877dd4100Argyrios KyrtzidisTemplateIdAnnotation *Parser::takeTemplateIdAnnotation(const Token &tok) { 120125a767651d14db87aa03dd5fe3e011d877dd4100Argyrios Kyrtzidis assert(tok.is(tok::annot_template_id) && "Expected template-id token"); 120225a767651d14db87aa03dd5fe3e011d877dd4100Argyrios Kyrtzidis TemplateIdAnnotation * 120325a767651d14db87aa03dd5fe3e011d877dd4100Argyrios Kyrtzidis Id = static_cast<TemplateIdAnnotation *>(tok.getAnnotationValue()); 120425a767651d14db87aa03dd5fe3e011d877dd4100Argyrios Kyrtzidis TopLevelDeclCleanupPool.delayMemberFunc< TemplateIdAnnotation, 120525a767651d14db87aa03dd5fe3e011d877dd4100Argyrios Kyrtzidis &TemplateIdAnnotation::Destroy>(Id); 120625a767651d14db87aa03dd5fe3e011d877dd4100Argyrios Kyrtzidis return Id; 120725a767651d14db87aa03dd5fe3e011d877dd4100Argyrios Kyrtzidis} 120825a767651d14db87aa03dd5fe3e011d877dd4100Argyrios Kyrtzidis 1209eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// TryAnnotateTypeOrScopeToken - If the current token position is on a 1210eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// typename (possibly qualified in C++) or a C++ scope specifier not followed 1211eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// by a typename, TryAnnotateTypeOrScopeToken will replace one or more tokens 1212eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// with a single annotation token representing the typename or C++ scope 1213eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// respectively. 1214eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// This simplifies handling of C++ scope specifiers and allows efficient 1215eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// backtracking without the need to re-parse and resolve nested-names and 1216eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// typenames. 121744802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// It will mainly be called when we expect to treat identifiers as typenames 121844802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// (if they are typenames). For example, in C we do not expect identifiers 121944802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// inside expressions to be treated as typenames so it will not be called 122044802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// for expressions in C. 122144802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// The benefit for C/ObjC is that a typename will be annotated and 1222b43a50ff1b0b171ece84425b0ad83a9a31f038faSteve Naroff/// Actions.getTypeName will not be needed to be called again (e.g. getTypeName 122344802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// will not be called twice, once to check whether we have a declaration 122444802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// specifier, and another one to get the actual type inside 122544802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// ParseDeclarationSpecifiers). 1226a7bc7c880f86bc180684ef032d06df51bcae7a23Chris Lattner/// 12279ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall/// This returns true if an error occurred. 12281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// 122955a7cefc846765ac7d142a63f773747a20518d71Chris Lattner/// Note that this routine emits an error if you call it with ::new or ::delete 123055a7cefc846765ac7d142a63f773747a20518d71Chris Lattner/// as the current tokens, so only call it in contexts where these are invalid. 1231fac9467d1676dc05761e12e41e13e01a3a3da52bKaelyn Uhrainbool Parser::TryAnnotateTypeOrScopeToken(bool EnteringContext, bool NeedType) { 12321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert((Tok.is(tok::identifier) || Tok.is(tok::coloncolon) 123342d6d0c91ab089cb252ab2f91c16d4557f458a2cDavid Blaikie || Tok.is(tok::kw_typename) || Tok.is(tok::annot_cxxscope) 123442d6d0c91ab089cb252ab2f91c16d4557f458a2cDavid Blaikie || Tok.is(tok::kw_decltype)) && "Cannot be a type or scope token!"); 12351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1236d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor if (Tok.is(tok::kw_typename)) { 1237d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor // Parse a C++ typename-specifier, e.g., "typename T::type". 1238d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor // 1239d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor // typename-specifier: 1240d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor // 'typename' '::' [opt] nested-name-specifier identifier 12411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // 'typename' '::' [opt] nested-name-specifier template [opt] 12421734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor // simple-template-id 1243d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor SourceLocation TypenameLoc = ConsumeToken(); 1244d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor CXXScopeSpec SS; 1245efaa93aaa2653f4eb40e6a22e504a448da94aaf8Douglas Gregor if (ParseOptionalCXXScopeSpecifier(SS, /*ObjectType=*/ParsedType(), 1246efaa93aaa2653f4eb40e6a22e504a448da94aaf8Douglas Gregor /*EnteringContext=*/false, 12474147d307086cf024a40a080e2bf379e9725f6f41Francois Pichet 0, /*IsTypename*/true)) 12489ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return true; 12499ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall if (!SS.isSet()) { 12504e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (getLangOpts().MicrosoftExt) 1251a5d318ad4ad3a110b3abb34f765e69b76f7c0bcdFrancois Pichet Diag(Tok.getLocation(), diag::warn_expected_qualified_after_typename); 1252a5d318ad4ad3a110b3abb34f765e69b76f7c0bcdFrancois Pichet else 1253a5d318ad4ad3a110b3abb34f765e69b76f7c0bcdFrancois Pichet Diag(Tok.getLocation(), diag::err_expected_qualified_after_typename); 12549ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return true; 1255d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor } 1256d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor 1257d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor TypeResult Ty; 1258d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor if (Tok.is(tok::identifier)) { 1259d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor // FIXME: check whether the next token is '<', first! 126023c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Ty = Actions.ActOnTypenameType(getCurScope(), TypenameLoc, SS, 12611a15dae8be2b28e02b6639aa92b832465c5be420Douglas Gregor *Tok.getIdentifierInfo(), 1262d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor Tok.getLocation()); 12631734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor } else if (Tok.is(tok::annot_template_id)) { 126425a767651d14db87aa03dd5fe3e011d877dd4100Argyrios Kyrtzidis TemplateIdAnnotation *TemplateId = takeTemplateIdAnnotation(Tok); 12651734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor if (TemplateId->Kind == TNK_Function_template) { 12661734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor Diag(Tok, diag::err_typename_refers_to_non_type_template) 12671734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor << Tok.getAnnotationRange(); 12689ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return true; 12691734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor } 1270d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor 1271a02411e4d58b1730bea2a990822858ecc31e8eb1Douglas Gregor ASTTemplateArgsPtr TemplateArgsPtr(Actions, 1272a02411e4d58b1730bea2a990822858ecc31e8eb1Douglas Gregor TemplateId->getTemplateArgs(), 1273a02411e4d58b1730bea2a990822858ecc31e8eb1Douglas Gregor TemplateId->NumArgs); 127466581d41527628d4b37f7b05c288f77be7415d7dAbramo Bagnara 1275a02411e4d58b1730bea2a990822858ecc31e8eb1Douglas Gregor Ty = Actions.ActOnTypenameType(getCurScope(), TypenameLoc, SS, 127666581d41527628d4b37f7b05c288f77be7415d7dAbramo Bagnara TemplateId->TemplateKWLoc, 1277a02411e4d58b1730bea2a990822858ecc31e8eb1Douglas Gregor TemplateId->Template, 1278a02411e4d58b1730bea2a990822858ecc31e8eb1Douglas Gregor TemplateId->TemplateNameLoc, 1279a02411e4d58b1730bea2a990822858ecc31e8eb1Douglas Gregor TemplateId->LAngleLoc, 128066581d41527628d4b37f7b05c288f77be7415d7dAbramo Bagnara TemplateArgsPtr, 1281a02411e4d58b1730bea2a990822858ecc31e8eb1Douglas Gregor TemplateId->RAngleLoc); 12821734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor } else { 12831734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor Diag(Tok, diag::err_expected_type_name_after_typename) 12841734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor << SS.getRange(); 12859ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return true; 12861734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor } 12871734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor 128839d67117f896c6e2faa727671ef64b3c04b0e3feSebastian Redl SourceLocation EndLoc = Tok.getLastLoc(); 12891734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor Tok.setKind(tok::annot_typename); 1290b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall setTypeAnnotation(Tok, Ty.isInvalid() ? ParsedType() : Ty.get()); 129139d67117f896c6e2faa727671ef64b3c04b0e3feSebastian Redl Tok.setAnnotationEndLoc(EndLoc); 12921734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor Tok.setLocation(TypenameLoc); 12931734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor PP.AnnotateCachedTokens(Tok); 12949ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return false; 1295d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor } 1296d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor 1297ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall // Remembers whether the token was originally a scope annotation. 1298ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall bool wasScopeAnnotation = Tok.is(tok::annot_cxxscope); 1299ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall 1300eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis CXXScopeSpec SS; 13014e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (getLangOpts().CPlusPlus) 1302b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall if (ParseOptionalCXXScopeSpecifier(SS, ParsedType(), EnteringContext)) 13039ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return true; 1304eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis 1305eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis if (Tok.is(tok::identifier)) { 1306fac9467d1676dc05761e12e41e13e01a3a3da52bKaelyn Uhrain IdentifierInfo *CorrectedII = 0; 1307608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner // Determine whether the identifier is a type name. 1308b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall if (ParsedType Ty = Actions.getTypeName(*Tok.getIdentifierInfo(), 1309b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall Tok.getLocation(), getCurScope(), 13101e52dfc648ce0b25ef57ae29ef1b4337d80011efFariborz Jahanian &SS, false, 13119e876876afc13aa671cc11a17c19907c599b9ab9Douglas Gregor NextToken().is(tok::period), 13129e876876afc13aa671cc11a17c19907c599b9ab9Douglas Gregor ParsedType(), 1313fad03b75e0297546c5d12ec420b5b79d5b7baa2aAbramo Bagnara /*IsCtorOrDtorName=*/false, 1314fac9467d1676dc05761e12e41e13e01a3a3da52bKaelyn Uhrain /*NonTrivialTypeSourceInfo*/true, 1315fac9467d1676dc05761e12e41e13e01a3a3da52bKaelyn Uhrain NeedType ? &CorrectedII : NULL)) { 1316fac9467d1676dc05761e12e41e13e01a3a3da52bKaelyn Uhrain // A FixIt was applied as a result of typo correction 1317fac9467d1676dc05761e12e41e13e01a3a3da52bKaelyn Uhrain if (CorrectedII) 1318fac9467d1676dc05761e12e41e13e01a3a3da52bKaelyn Uhrain Tok.setIdentifierInfo(CorrectedII); 1319608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner // This is a typename. Replace the current token in-place with an 1320608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner // annotation type token. 1321b31757b68afe06ba442a05775d08fe7aa0f6f889Chris Lattner Tok.setKind(tok::annot_typename); 1322b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall setTypeAnnotation(Tok, Ty); 1323608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner Tok.setAnnotationEndLoc(Tok.getLocation()); 1324608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner if (SS.isNotEmpty()) // it was a C++ qualified type name. 1325608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner Tok.setLocation(SS.getBeginLoc()); 13261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1327608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner // In case the tokens were cached, have Preprocessor replace 1328608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner // them with the annotation token. 1329608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner PP.AnnotateCachedTokens(Tok); 13309ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return false; 13311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 133239a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor 13334e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!getLangOpts().CPlusPlus) { 1334608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner // If we're in C, we can't have :: tokens at all (the lexer won't return 1335608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner // them). If the identifier is not a type, then it can't be scope either, 13361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // just early exit. 1337608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner return false; 1338eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis } 13391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 134039a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // If this is a template-id, annotate with a template-id or type token. 134155f6b14230c94272efbbcdd89a92224c8db9f225Douglas Gregor if (NextToken().is(tok::less)) { 13427532dc66648cfe7432c9fe66dec5225f0ab301c6Douglas Gregor TemplateTy Template; 1343014e88d94ff83e3aad4e33b16413a2d1817ec208Douglas Gregor UnqualifiedId TemplateName; 1344014e88d94ff83e3aad4e33b16413a2d1817ec208Douglas Gregor TemplateName.setIdentifier(Tok.getIdentifierInfo(), Tok.getLocation()); 13451fd6d44d7ca97631497551bbf98866263143d706Douglas Gregor bool MemberOfUnknownSpecialization; 13461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (TemplateNameKind TNK 13477c15353ccaed24f2df932571166bf305c1b98b6dAbramo Bagnara = Actions.isTemplateName(getCurScope(), SS, 13487c15353ccaed24f2df932571166bf305c1b98b6dAbramo Bagnara /*hasTemplateKeyword=*/false, TemplateName, 1349b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall /*ObjectType=*/ ParsedType(), 1350b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall EnteringContext, 13517c15353ccaed24f2df932571166bf305c1b98b6dAbramo Bagnara Template, MemberOfUnknownSpecialization)) { 1352ca1bdd7c269a2390d43c040a60511edd017ee130Douglas Gregor // Consume the identifier. 1353ca1bdd7c269a2390d43c040a60511edd017ee130Douglas Gregor ConsumeToken(); 1354e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara if (AnnotateTemplateIdToken(Template, TNK, SS, SourceLocation(), 1355e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara TemplateName)) { 1356c8e27cc402043ec86c1698c09e4ee9e415b16207Chris Lattner // If an unrecoverable error occurred, we need to return true here, 1357c8e27cc402043ec86c1698c09e4ee9e415b16207Chris Lattner // because the token stream is in a damaged state. We may not return 1358c8e27cc402043ec86c1698c09e4ee9e415b16207Chris Lattner // a valid identifier. 13599ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return true; 1360c8e27cc402043ec86c1698c09e4ee9e415b16207Chris Lattner } 1361ca1bdd7c269a2390d43c040a60511edd017ee130Douglas Gregor } 136255f6b14230c94272efbbcdd89a92224c8db9f225Douglas Gregor } 1363d6fb7ef028d9aa0b3e8943b7bc049c524437b407Douglas Gregor 136439a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // The current token, which is either an identifier or a 136539a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // template-id, is not part of the annotation. Fall through to 136639a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // push that token back into the stream and complete the C++ scope 136739a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // specifier annotation. 13681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 1369eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis 137039a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor if (Tok.is(tok::annot_template_id)) { 137125a767651d14db87aa03dd5fe3e011d877dd4100Argyrios Kyrtzidis TemplateIdAnnotation *TemplateId = takeTemplateIdAnnotation(Tok); 1372c45c232440dfafedca1a3773b904fb42609b1b19Douglas Gregor if (TemplateId->Kind == TNK_Type_template) { 137339a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // A template-id that refers to a type was parsed into a 137439a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // template-id annotation in a context where we weren't allowed 137539a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // to produce a type annotation token. Update the template-id 137639a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // annotation token to a type annotation token now. 1377059101f922de6eb765601459925f4c8914420b23Douglas Gregor AnnotateTemplateIdTokenAsType(); 13789ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return false; 137939a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor } 138039a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor } 1381d6fb7ef028d9aa0b3e8943b7bc049c524437b407Douglas Gregor 13826ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner if (SS.isEmpty()) 13839ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return false; 13841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13856ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner // A C++ scope specifier that isn't followed by a typename. 13866ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner // Push the current token back into the token stream (or revert it if it is 13876ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner // cached) and use an annotation scope token for current token. 13886ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner if (PP.isBacktrackEnabled()) 13896ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner PP.RevertCachedTokens(1); 13906ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner else 13916ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner PP.EnterToken(Tok); 13926ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner Tok.setKind(tok::annot_cxxscope); 1393c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor Tok.setAnnotationValue(Actions.SaveNestedNameSpecifierAnnotation(SS)); 13946ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner Tok.setAnnotationRange(SS.getRange()); 13956ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner 1396ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall // In case the tokens were cached, have Preprocessor replace them 1397ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall // with the annotation token. We don't need to do this if we've 1398ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall // just reverted back to the state we were in before being called. 1399ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall if (!wasScopeAnnotation) 1400ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall PP.AnnotateCachedTokens(Tok); 14019ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return false; 1402eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis} 1403eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis 1404eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// TryAnnotateScopeToken - Like TryAnnotateTypeOrScopeToken but only 140539a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor/// annotates C++ scope specifiers and template-ids. This returns 1406c8e27cc402043ec86c1698c09e4ee9e415b16207Chris Lattner/// true if the token was annotated or there was an error that could not be 1407c8e27cc402043ec86c1698c09e4ee9e415b16207Chris Lattner/// recovered from. 14081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// 140955a7cefc846765ac7d142a63f773747a20518d71Chris Lattner/// Note that this routine emits an error if you call it with ::new or ::delete 141055a7cefc846765ac7d142a63f773747a20518d71Chris Lattner/// as the current tokens, so only call it in contexts where these are invalid. 1411495c35d291da48c4f5655bbb54d15128ddde0d4dDouglas Gregorbool Parser::TryAnnotateCXXScopeToken(bool EnteringContext) { 14124e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie assert(getLangOpts().CPlusPlus && 14136ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner "Call sites of this function should be guarded by checking for C++"); 14143b887354b1b667c97d070ddc67b5354353c4c07bDouglas Gregor assert((Tok.is(tok::identifier) || Tok.is(tok::coloncolon) || 141542d6d0c91ab089cb252ab2f91c16d4557f458a2cDavid Blaikie (Tok.is(tok::annot_template_id) && NextToken().is(tok::coloncolon)) || 141642d6d0c91ab089cb252ab2f91c16d4557f458a2cDavid Blaikie Tok.is(tok::kw_decltype)) && "Cannot be a type or scope token!"); 1417eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis 14184bdd91c09fd59e0c154d759288beff300e31e1d0Argyrios Kyrtzidis CXXScopeSpec SS; 1419b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall if (ParseOptionalCXXScopeSpecifier(SS, ParsedType(), EnteringContext)) 14209ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return true; 1421edc287751a4b05e3b4d8ff2b38fa30c5b59a548bJeffrey Yasskin if (SS.isEmpty()) 14229ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return false; 1423eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis 14246ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner // Push the current token back into the token stream (or revert it if it is 14256ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner // cached) and use an annotation scope token for current token. 14266ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner if (PP.isBacktrackEnabled()) 14276ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner PP.RevertCachedTokens(1); 14286ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner else 14296ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner PP.EnterToken(Tok); 14306ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner Tok.setKind(tok::annot_cxxscope); 1431c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor Tok.setAnnotationValue(Actions.SaveNestedNameSpecifierAnnotation(SS)); 14326ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner Tok.setAnnotationRange(SS.getRange()); 14336ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner 14346ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner // In case the tokens were cached, have Preprocessor replace them with the 14356ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner // annotation token. 14366ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner PP.AnnotateCachedTokens(Tok); 14379ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return false; 1438eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis} 14396c94a6d77f456f23ecd4c2061e6413786b5e6571John McCall 1440fcaf27e185695bdf755e202aeba9632e0a8ef3c6Richard Trieubool Parser::isTokenEqualOrEqualTypo() { 1441fcaf27e185695bdf755e202aeba9632e0a8ef3c6Richard Trieu tok::TokenKind Kind = Tok.getKind(); 1442fcaf27e185695bdf755e202aeba9632e0a8ef3c6Richard Trieu switch (Kind) { 1443fcaf27e185695bdf755e202aeba9632e0a8ef3c6Richard Trieu default: 1444d6c7c67313634b317a0d63c32be0511a121bb33dRichard Trieu return false; 1445fcaf27e185695bdf755e202aeba9632e0a8ef3c6Richard Trieu case tok::ampequal: // &= 1446fcaf27e185695bdf755e202aeba9632e0a8ef3c6Richard Trieu case tok::starequal: // *= 1447fcaf27e185695bdf755e202aeba9632e0a8ef3c6Richard Trieu case tok::plusequal: // += 1448fcaf27e185695bdf755e202aeba9632e0a8ef3c6Richard Trieu case tok::minusequal: // -= 1449fcaf27e185695bdf755e202aeba9632e0a8ef3c6Richard Trieu case tok::exclaimequal: // != 1450fcaf27e185695bdf755e202aeba9632e0a8ef3c6Richard Trieu case tok::slashequal: // /= 1451fcaf27e185695bdf755e202aeba9632e0a8ef3c6Richard Trieu case tok::percentequal: // %= 1452fcaf27e185695bdf755e202aeba9632e0a8ef3c6Richard Trieu case tok::lessequal: // <= 1453fcaf27e185695bdf755e202aeba9632e0a8ef3c6Richard Trieu case tok::lesslessequal: // <<= 1454fcaf27e185695bdf755e202aeba9632e0a8ef3c6Richard Trieu case tok::greaterequal: // >= 1455fcaf27e185695bdf755e202aeba9632e0a8ef3c6Richard Trieu case tok::greatergreaterequal: // >>= 1456fcaf27e185695bdf755e202aeba9632e0a8ef3c6Richard Trieu case tok::caretequal: // ^= 1457fcaf27e185695bdf755e202aeba9632e0a8ef3c6Richard Trieu case tok::pipeequal: // |= 1458fcaf27e185695bdf755e202aeba9632e0a8ef3c6Richard Trieu case tok::equalequal: // == 1459fcaf27e185695bdf755e202aeba9632e0a8ef3c6Richard Trieu Diag(Tok, diag::err_invalid_token_after_declarator_suggest_equal) 1460fcaf27e185695bdf755e202aeba9632e0a8ef3c6Richard Trieu << getTokenSimpleSpelling(Kind) 1461fcaf27e185695bdf755e202aeba9632e0a8ef3c6Richard Trieu << FixItHint::CreateReplacement(SourceRange(Tok.getLocation()), "="); 1462fcaf27e185695bdf755e202aeba9632e0a8ef3c6Richard Trieu case tok::equal: 1463fcaf27e185695bdf755e202aeba9632e0a8ef3c6Richard Trieu return true; 1464fcaf27e185695bdf755e202aeba9632e0a8ef3c6Richard Trieu } 1465a6eb5f81d13bacac01faff70a947047725b4413fArgyrios Kyrtzidis} 1466a6eb5f81d13bacac01faff70a947047725b4413fArgyrios Kyrtzidis 14677d100872341f233c81e1d7b72b40457e62c36862Argyrios KyrtzidisSourceLocation Parser::handleUnexpectedCodeCompletionToken() { 14687d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis assert(Tok.is(tok::code_completion)); 14697d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis PrevTokLocation = Tok.getLocation(); 14707d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis 147123c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor for (Scope *S = getCurScope(); S; S = S->getParent()) { 1472dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor if (S->getFlags() & Scope::FnScope) { 1473f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall Actions.CodeCompleteOrdinaryName(getCurScope(), Sema::PCC_RecoveryInFunction); 14747d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis cutOffParsing(); 14757d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis return PrevTokLocation; 1476dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor } 1477dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor 1478dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor if (S->getFlags() & Scope::ClassScope) { 1479f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall Actions.CodeCompleteOrdinaryName(getCurScope(), Sema::PCC_Class); 14807d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis cutOffParsing(); 14817d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis return PrevTokLocation; 1482dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor } 1483dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor } 1484dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor 1485f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall Actions.CodeCompleteOrdinaryName(getCurScope(), Sema::PCC_Namespace); 14867d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis cutOffParsing(); 14877d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis return PrevTokLocation; 1488dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor} 1489dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor 14906c94a6d77f456f23ecd4c2061e6413786b5e6571John McCall// Anchor the Parser::FieldCallback vtable to this translation unit. 14916c94a6d77f456f23ecd4c2061e6413786b5e6571John McCall// We use a spurious method instead of the destructor because 14926c94a6d77f456f23ecd4c2061e6413786b5e6571John McCall// destroying FieldCallbacks can actually be slightly 14936c94a6d77f456f23ecd4c2061e6413786b5e6571John McCall// performance-sensitive. 14946c94a6d77f456f23ecd4c2061e6413786b5e6571John McCallvoid Parser::FieldCallback::_anchor() { 14956c94a6d77f456f23ecd4c2061e6413786b5e6571John McCall} 1496f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor 1497f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor// Code-completion pass-through functions 1498f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor 1499f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregorvoid Parser::CodeCompleteDirective(bool InConditional) { 1500f29c5233085a5af795c3c01b94d319e5b3235d56Douglas Gregor Actions.CodeCompletePreprocessorDirective(InConditional); 1501f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor} 1502f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor 1503f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregorvoid Parser::CodeCompleteInConditionalExclusion() { 1504f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor Actions.CodeCompleteInPreprocessorConditionalExclusion(getCurScope()); 1505f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor} 15061fbb447e9d43c2c676e94081fbfee7eb6cbe933bDouglas Gregor 15071fbb447e9d43c2c676e94081fbfee7eb6cbe933bDouglas Gregorvoid Parser::CodeCompleteMacroName(bool IsDefinition) { 1508f29c5233085a5af795c3c01b94d319e5b3235d56Douglas Gregor Actions.CodeCompletePreprocessorMacroName(IsDefinition); 1509f29c5233085a5af795c3c01b94d319e5b3235d56Douglas Gregor} 1510f29c5233085a5af795c3c01b94d319e5b3235d56Douglas Gregor 1511f29c5233085a5af795c3c01b94d319e5b3235d56Douglas Gregorvoid Parser::CodeCompletePreprocessorExpression() { 1512f29c5233085a5af795c3c01b94d319e5b3235d56Douglas Gregor Actions.CodeCompletePreprocessorExpression(); 1513f29c5233085a5af795c3c01b94d319e5b3235d56Douglas Gregor} 1514f29c5233085a5af795c3c01b94d319e5b3235d56Douglas Gregor 1515f29c5233085a5af795c3c01b94d319e5b3235d56Douglas Gregorvoid Parser::CodeCompleteMacroArgument(IdentifierInfo *Macro, 1516f29c5233085a5af795c3c01b94d319e5b3235d56Douglas Gregor MacroInfo *MacroInfo, 1517f29c5233085a5af795c3c01b94d319e5b3235d56Douglas Gregor unsigned ArgumentIndex) { 1518f29c5233085a5af795c3c01b94d319e5b3235d56Douglas Gregor Actions.CodeCompletePreprocessorMacroArgument(getCurScope(), Macro, MacroInfo, 1519f29c5233085a5af795c3c01b94d319e5b3235d56Douglas Gregor ArgumentIndex); 15201fbb447e9d43c2c676e94081fbfee7eb6cbe933bDouglas Gregor} 152155817afdf9d453a443262a733f6caf6692dca118Douglas Gregor 152255817afdf9d453a443262a733f6caf6692dca118Douglas Gregorvoid Parser::CodeCompleteNaturalLanguage() { 152355817afdf9d453a443262a733f6caf6692dca118Douglas Gregor Actions.CodeCompleteNaturalLanguage(); 152455817afdf9d453a443262a733f6caf6692dca118Douglas Gregor} 1525f986038beed360c031de8654cfba43a5d3184605Francois Pichet 15263896fc5d4daaf003e451e797e37de57dd8cf9cd5Douglas Gregorbool Parser::ParseMicrosoftIfExistsCondition(IfExistsCondition& Result) { 1527f986038beed360c031de8654cfba43a5d3184605Francois Pichet assert((Tok.is(tok::kw___if_exists) || Tok.is(tok::kw___if_not_exists)) && 1528f986038beed360c031de8654cfba43a5d3184605Francois Pichet "Expected '__if_exists' or '__if_not_exists'"); 15293896fc5d4daaf003e451e797e37de57dd8cf9cd5Douglas Gregor Result.IsIfExists = Tok.is(tok::kw___if_exists); 15303896fc5d4daaf003e451e797e37de57dd8cf9cd5Douglas Gregor Result.KeywordLoc = ConsumeToken(); 1531f986038beed360c031de8654cfba43a5d3184605Francois Pichet 15324a8dfb511e8f84b2e38b7a86d8ddf05ac1e1a41bDouglas Gregor BalancedDelimiterTracker T(*this, tok::l_paren); 15334a8dfb511e8f84b2e38b7a86d8ddf05ac1e1a41bDouglas Gregor if (T.consumeOpen()) { 15343896fc5d4daaf003e451e797e37de57dd8cf9cd5Douglas Gregor Diag(Tok, diag::err_expected_lparen_after) 15353896fc5d4daaf003e451e797e37de57dd8cf9cd5Douglas Gregor << (Result.IsIfExists? "__if_exists" : "__if_not_exists"); 1536f986038beed360c031de8654cfba43a5d3184605Francois Pichet return true; 1537f986038beed360c031de8654cfba43a5d3184605Francois Pichet } 1538f986038beed360c031de8654cfba43a5d3184605Francois Pichet 1539f986038beed360c031de8654cfba43a5d3184605Francois Pichet // Parse nested-name-specifier. 1540efaa93aaa2653f4eb40e6a22e504a448da94aaf8Douglas Gregor ParseOptionalCXXScopeSpecifier(Result.SS, ParsedType(), 1541efaa93aaa2653f4eb40e6a22e504a448da94aaf8Douglas Gregor /*EnteringContext=*/false); 1542f986038beed360c031de8654cfba43a5d3184605Francois Pichet 1543f986038beed360c031de8654cfba43a5d3184605Francois Pichet // Check nested-name specifier. 15443896fc5d4daaf003e451e797e37de57dd8cf9cd5Douglas Gregor if (Result.SS.isInvalid()) { 15453896fc5d4daaf003e451e797e37de57dd8cf9cd5Douglas Gregor T.skipToEnd(); 1546f986038beed360c031de8654cfba43a5d3184605Francois Pichet return true; 1547f986038beed360c031de8654cfba43a5d3184605Francois Pichet } 1548f986038beed360c031de8654cfba43a5d3184605Francois Pichet 1549e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara // Parse the unqualified-id. 1550e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara SourceLocation TemplateKWLoc; // FIXME: parsed, but unused. 1551e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara if (ParseUnqualifiedId(Result.SS, false, true, true, ParsedType(), 1552e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara TemplateKWLoc, Result.Name)) { 15533896fc5d4daaf003e451e797e37de57dd8cf9cd5Douglas Gregor T.skipToEnd(); 1554f986038beed360c031de8654cfba43a5d3184605Francois Pichet return true; 1555f986038beed360c031de8654cfba43a5d3184605Francois Pichet } 1556f986038beed360c031de8654cfba43a5d3184605Francois Pichet 15573896fc5d4daaf003e451e797e37de57dd8cf9cd5Douglas Gregor if (T.consumeClose()) 1558f986038beed360c031de8654cfba43a5d3184605Francois Pichet return true; 15593896fc5d4daaf003e451e797e37de57dd8cf9cd5Douglas Gregor 1560f986038beed360c031de8654cfba43a5d3184605Francois Pichet // Check if the symbol exists. 156165019acfc46ffb191fac4e781ac0c4b8d0c8434eDouglas Gregor switch (Actions.CheckMicrosoftIfExistsSymbol(getCurScope(), Result.KeywordLoc, 156265019acfc46ffb191fac4e781ac0c4b8d0c8434eDouglas Gregor Result.IsIfExists, Result.SS, 15633896fc5d4daaf003e451e797e37de57dd8cf9cd5Douglas Gregor Result.Name)) { 15643896fc5d4daaf003e451e797e37de57dd8cf9cd5Douglas Gregor case Sema::IER_Exists: 15653896fc5d4daaf003e451e797e37de57dd8cf9cd5Douglas Gregor Result.Behavior = Result.IsIfExists ? IEB_Parse : IEB_Skip; 15663896fc5d4daaf003e451e797e37de57dd8cf9cd5Douglas Gregor break; 1567f986038beed360c031de8654cfba43a5d3184605Francois Pichet 15683896fc5d4daaf003e451e797e37de57dd8cf9cd5Douglas Gregor case Sema::IER_DoesNotExist: 15693896fc5d4daaf003e451e797e37de57dd8cf9cd5Douglas Gregor Result.Behavior = !Result.IsIfExists ? IEB_Parse : IEB_Skip; 15703896fc5d4daaf003e451e797e37de57dd8cf9cd5Douglas Gregor break; 15713896fc5d4daaf003e451e797e37de57dd8cf9cd5Douglas Gregor 15723896fc5d4daaf003e451e797e37de57dd8cf9cd5Douglas Gregor case Sema::IER_Dependent: 15733896fc5d4daaf003e451e797e37de57dd8cf9cd5Douglas Gregor Result.Behavior = IEB_Dependent; 15743896fc5d4daaf003e451e797e37de57dd8cf9cd5Douglas Gregor break; 157565019acfc46ffb191fac4e781ac0c4b8d0c8434eDouglas Gregor 157665019acfc46ffb191fac4e781ac0c4b8d0c8434eDouglas Gregor case Sema::IER_Error: 157765019acfc46ffb191fac4e781ac0c4b8d0c8434eDouglas Gregor return true; 15783896fc5d4daaf003e451e797e37de57dd8cf9cd5Douglas Gregor } 1579f986038beed360c031de8654cfba43a5d3184605Francois Pichet 1580f986038beed360c031de8654cfba43a5d3184605Francois Pichet return false; 1581f986038beed360c031de8654cfba43a5d3184605Francois Pichet} 1582f986038beed360c031de8654cfba43a5d3184605Francois Pichet 1583563a645de82231a55e221fe655b7188bf8369662Francois Pichetvoid Parser::ParseMicrosoftIfExistsExternalDeclaration() { 15843896fc5d4daaf003e451e797e37de57dd8cf9cd5Douglas Gregor IfExistsCondition Result; 1585f986038beed360c031de8654cfba43a5d3184605Francois Pichet if (ParseMicrosoftIfExistsCondition(Result)) 1586f986038beed360c031de8654cfba43a5d3184605Francois Pichet return; 1587f986038beed360c031de8654cfba43a5d3184605Francois Pichet 15883896fc5d4daaf003e451e797e37de57dd8cf9cd5Douglas Gregor BalancedDelimiterTracker Braces(*this, tok::l_brace); 15893896fc5d4daaf003e451e797e37de57dd8cf9cd5Douglas Gregor if (Braces.consumeOpen()) { 1590f986038beed360c031de8654cfba43a5d3184605Francois Pichet Diag(Tok, diag::err_expected_lbrace); 1591f986038beed360c031de8654cfba43a5d3184605Francois Pichet return; 1592f986038beed360c031de8654cfba43a5d3184605Francois Pichet } 1593f986038beed360c031de8654cfba43a5d3184605Francois Pichet 15943896fc5d4daaf003e451e797e37de57dd8cf9cd5Douglas Gregor switch (Result.Behavior) { 15953896fc5d4daaf003e451e797e37de57dd8cf9cd5Douglas Gregor case IEB_Parse: 15963896fc5d4daaf003e451e797e37de57dd8cf9cd5Douglas Gregor // Parse declarations below. 15973896fc5d4daaf003e451e797e37de57dd8cf9cd5Douglas Gregor break; 15983896fc5d4daaf003e451e797e37de57dd8cf9cd5Douglas Gregor 15993896fc5d4daaf003e451e797e37de57dd8cf9cd5Douglas Gregor case IEB_Dependent: 16003896fc5d4daaf003e451e797e37de57dd8cf9cd5Douglas Gregor llvm_unreachable("Cannot have a dependent external declaration"); 16013896fc5d4daaf003e451e797e37de57dd8cf9cd5Douglas Gregor 16023896fc5d4daaf003e451e797e37de57dd8cf9cd5Douglas Gregor case IEB_Skip: 16033896fc5d4daaf003e451e797e37de57dd8cf9cd5Douglas Gregor Braces.skipToEnd(); 1604f986038beed360c031de8654cfba43a5d3184605Francois Pichet return; 1605f986038beed360c031de8654cfba43a5d3184605Francois Pichet } 1606f986038beed360c031de8654cfba43a5d3184605Francois Pichet 16073896fc5d4daaf003e451e797e37de57dd8cf9cd5Douglas Gregor // Parse the declarations. 16083896fc5d4daaf003e451e797e37de57dd8cf9cd5Douglas Gregor while (Tok.isNot(tok::r_brace) && Tok.isNot(tok::eof)) { 1609f986038beed360c031de8654cfba43a5d3184605Francois Pichet ParsedAttributesWithRange attrs(AttrFactory); 1610f986038beed360c031de8654cfba43a5d3184605Francois Pichet MaybeParseCXX0XAttributes(attrs); 1611f986038beed360c031de8654cfba43a5d3184605Francois Pichet MaybeParseMicrosoftAttributes(attrs); 1612f986038beed360c031de8654cfba43a5d3184605Francois Pichet DeclGroupPtrTy Result = ParseExternalDeclaration(attrs); 1613f986038beed360c031de8654cfba43a5d3184605Francois Pichet if (Result && !getCurScope()->getParent()) 1614f986038beed360c031de8654cfba43a5d3184605Francois Pichet Actions.getASTConsumer().HandleTopLevelDecl(Result.get()); 16153896fc5d4daaf003e451e797e37de57dd8cf9cd5Douglas Gregor } 16163896fc5d4daaf003e451e797e37de57dd8cf9cd5Douglas Gregor Braces.consumeClose(); 1617f986038beed360c031de8654cfba43a5d3184605Francois Pichet} 16186aa52ec6b969faabf3764baf79d89810b8249a7eDouglas Gregor 16195948ae1021122164b22f74353bb7fe325a64f616Douglas GregorParser::DeclGroupPtrTy Parser::ParseModuleImport(SourceLocation AtLoc) { 162032ad2ee2618745ce3da51c2ae066ed5f21157c07Ted Kremenek assert(Tok.isObjCAtKeyword(tok::objc___experimental_modules_import) && 162165030af6526748ce11534e92f0ccefc44091ba13Douglas Gregor "Improper start to module import"); 16226aa52ec6b969faabf3764baf79d89810b8249a7eDouglas Gregor SourceLocation ImportLoc = ConsumeToken(); 16236aa52ec6b969faabf3764baf79d89810b8249a7eDouglas Gregor 16243d3589db579f7695667b913c5043dd264ebe546fDouglas Gregor llvm::SmallVector<std::pair<IdentifierInfo *, SourceLocation>, 2> Path; 16253d3589db579f7695667b913c5043dd264ebe546fDouglas Gregor 16263d3589db579f7695667b913c5043dd264ebe546fDouglas Gregor // Parse the module path. 16273d3589db579f7695667b913c5043dd264ebe546fDouglas Gregor do { 16283d3589db579f7695667b913c5043dd264ebe546fDouglas Gregor if (!Tok.is(tok::identifier)) { 1629c5b2e58840748145d1706c1d1481369d1863fabfDouglas Gregor if (Tok.is(tok::code_completion)) { 1630c5b2e58840748145d1706c1d1481369d1863fabfDouglas Gregor Actions.CodeCompleteModuleImport(ImportLoc, Path); 1631c5b2e58840748145d1706c1d1481369d1863fabfDouglas Gregor ConsumeCodeCompletionToken(); 1632c5b2e58840748145d1706c1d1481369d1863fabfDouglas Gregor SkipUntil(tok::semi); 1633c5b2e58840748145d1706c1d1481369d1863fabfDouglas Gregor return DeclGroupPtrTy(); 1634c5b2e58840748145d1706c1d1481369d1863fabfDouglas Gregor } 1635c5b2e58840748145d1706c1d1481369d1863fabfDouglas Gregor 16363d3589db579f7695667b913c5043dd264ebe546fDouglas Gregor Diag(Tok, diag::err_module_expected_ident); 16373d3589db579f7695667b913c5043dd264ebe546fDouglas Gregor SkipUntil(tok::semi); 16383d3589db579f7695667b913c5043dd264ebe546fDouglas Gregor return DeclGroupPtrTy(); 16393d3589db579f7695667b913c5043dd264ebe546fDouglas Gregor } 16403d3589db579f7695667b913c5043dd264ebe546fDouglas Gregor 16413d3589db579f7695667b913c5043dd264ebe546fDouglas Gregor // Record this part of the module path. 16423d3589db579f7695667b913c5043dd264ebe546fDouglas Gregor Path.push_back(std::make_pair(Tok.getIdentifierInfo(), Tok.getLocation())); 16433d3589db579f7695667b913c5043dd264ebe546fDouglas Gregor ConsumeToken(); 16443d3589db579f7695667b913c5043dd264ebe546fDouglas Gregor 16453d3589db579f7695667b913c5043dd264ebe546fDouglas Gregor if (Tok.is(tok::period)) { 16463d3589db579f7695667b913c5043dd264ebe546fDouglas Gregor ConsumeToken(); 16473d3589db579f7695667b913c5043dd264ebe546fDouglas Gregor continue; 16483d3589db579f7695667b913c5043dd264ebe546fDouglas Gregor } 16493d3589db579f7695667b913c5043dd264ebe546fDouglas Gregor 16503d3589db579f7695667b913c5043dd264ebe546fDouglas Gregor break; 16513d3589db579f7695667b913c5043dd264ebe546fDouglas Gregor } while (true); 16526aa52ec6b969faabf3764baf79d89810b8249a7eDouglas Gregor 16535948ae1021122164b22f74353bb7fe325a64f616Douglas Gregor DeclResult Import = Actions.ActOnModuleImport(AtLoc, ImportLoc, Path); 16546aa52ec6b969faabf3764baf79d89810b8249a7eDouglas Gregor ExpectAndConsumeSemi(diag::err_module_expected_semi); 16556aa52ec6b969faabf3764baf79d89810b8249a7eDouglas Gregor if (Import.isInvalid()) 16566aa52ec6b969faabf3764baf79d89810b8249a7eDouglas Gregor return DeclGroupPtrTy(); 16576aa52ec6b969faabf3764baf79d89810b8249a7eDouglas Gregor 16586aa52ec6b969faabf3764baf79d89810b8249a7eDouglas Gregor return Actions.ConvertDeclToDeclGroup(Import.get()); 16596aa52ec6b969faabf3764baf79d89810b8249a7eDouglas Gregor} 16604a8dfb511e8f84b2e38b7a86d8ddf05ac1e1a41bDouglas Gregor 1661d78ef5b941ce2937228b010e8443f92025f9d683Douglas Gregorbool Parser::BalancedDelimiterTracker::diagnoseOverflow() { 1662d78ef5b941ce2937228b010e8443f92025f9d683Douglas Gregor P.Diag(P.Tok, diag::err_parser_impl_limit_overflow); 1663d78ef5b941ce2937228b010e8443f92025f9d683Douglas Gregor P.SkipUntil(tok::eof); 1664d78ef5b941ce2937228b010e8443f92025f9d683Douglas Gregor return true; 16654a8dfb511e8f84b2e38b7a86d8ddf05ac1e1a41bDouglas Gregor} 16664a8dfb511e8f84b2e38b7a86d8ddf05ac1e1a41bDouglas Gregor 16674a8dfb511e8f84b2e38b7a86d8ddf05ac1e1a41bDouglas Gregorbool Parser::BalancedDelimiterTracker::expectAndConsume(unsigned DiagID, 16684a8dfb511e8f84b2e38b7a86d8ddf05ac1e1a41bDouglas Gregor const char *Msg, 16694a8dfb511e8f84b2e38b7a86d8ddf05ac1e1a41bDouglas Gregor tok::TokenKind SkipToToc ) { 16704a8dfb511e8f84b2e38b7a86d8ddf05ac1e1a41bDouglas Gregor LOpen = P.Tok.getLocation(); 1671d78ef5b941ce2937228b010e8443f92025f9d683Douglas Gregor if (P.ExpectAndConsume(Kind, DiagID, Msg, SkipToToc)) 1672d78ef5b941ce2937228b010e8443f92025f9d683Douglas Gregor return true; 1673d78ef5b941ce2937228b010e8443f92025f9d683Douglas Gregor 1674d78ef5b941ce2937228b010e8443f92025f9d683Douglas Gregor if (getDepth() < MaxDepth) 1675d78ef5b941ce2937228b010e8443f92025f9d683Douglas Gregor return false; 1676d78ef5b941ce2937228b010e8443f92025f9d683Douglas Gregor 1677d78ef5b941ce2937228b010e8443f92025f9d683Douglas Gregor return diagnoseOverflow(); 16784a8dfb511e8f84b2e38b7a86d8ddf05ac1e1a41bDouglas Gregor} 16794a8dfb511e8f84b2e38b7a86d8ddf05ac1e1a41bDouglas Gregor 1680d78ef5b941ce2937228b010e8443f92025f9d683Douglas Gregorbool Parser::BalancedDelimiterTracker::diagnoseMissingClose() { 1681d78ef5b941ce2937228b010e8443f92025f9d683Douglas Gregor assert(!P.Tok.is(Close) && "Should have consumed closing delimiter"); 1682d78ef5b941ce2937228b010e8443f92025f9d683Douglas Gregor 1683d78ef5b941ce2937228b010e8443f92025f9d683Douglas Gregor const char *LHSName = "unknown"; 1684d78ef5b941ce2937228b010e8443f92025f9d683Douglas Gregor diag::kind DID = diag::err_parse_error; 1685d78ef5b941ce2937228b010e8443f92025f9d683Douglas Gregor switch (Close) { 1686d78ef5b941ce2937228b010e8443f92025f9d683Douglas Gregor default: break; 1687d78ef5b941ce2937228b010e8443f92025f9d683Douglas Gregor case tok::r_paren : LHSName = "("; DID = diag::err_expected_rparen; break; 1688d78ef5b941ce2937228b010e8443f92025f9d683Douglas Gregor case tok::r_brace : LHSName = "{"; DID = diag::err_expected_rbrace; break; 1689d78ef5b941ce2937228b010e8443f92025f9d683Douglas Gregor case tok::r_square: LHSName = "["; DID = diag::err_expected_rsquare; break; 16904a8dfb511e8f84b2e38b7a86d8ddf05ac1e1a41bDouglas Gregor } 1691d78ef5b941ce2937228b010e8443f92025f9d683Douglas Gregor P.Diag(P.Tok, DID); 1692d78ef5b941ce2937228b010e8443f92025f9d683Douglas Gregor P.Diag(LOpen, diag::note_matching) << LHSName; 1693d78ef5b941ce2937228b010e8443f92025f9d683Douglas Gregor if (P.SkipUntil(Close)) 1694d78ef5b941ce2937228b010e8443f92025f9d683Douglas Gregor LClose = P.Tok.getLocation(); 16954a8dfb511e8f84b2e38b7a86d8ddf05ac1e1a41bDouglas Gregor return true; 16964a8dfb511e8f84b2e38b7a86d8ddf05ac1e1a41bDouglas Gregor} 16973896fc5d4daaf003e451e797e37de57dd8cf9cd5Douglas Gregor 16983896fc5d4daaf003e451e797e37de57dd8cf9cd5Douglas Gregorvoid Parser::BalancedDelimiterTracker::skipToEnd() { 16993896fc5d4daaf003e451e797e37de57dd8cf9cd5Douglas Gregor P.SkipUntil(Close, false); 17003896fc5d4daaf003e451e797e37de57dd8cf9cd5Douglas Gregor} 1701