Parser.cpp revision 28bbe4b8acc338476fe0825769b41fb32b423c72
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" 235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerusing namespace clang; 245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 25f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCallParser::Parser(Preprocessor &pp, Sema &actions) 26614f96a7cf94805c2d336639300b62dc2f54e9e0Ted Kremenek : PP(pp), Actions(actions), Diags(PP.getDiagnostics()), 270fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor GreaterThanIsOperator(true), ColonIsSacred(false), 280fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor InMessageExpression(false), TemplateParameterDepth(0) { 295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Tok.setKind(tok::eof); 3023c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Actions.CurScope = 0; 319e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner NumCachedScopes = 0; 325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ParenCount = BracketCount = BraceCount = 0; 33d226f65006733ed7f709c3174f22ce33391cb58fJohn McCall ObjCImpDecl = 0; 34fcdd8fe26de3eee44927600bf1853e21bd90dd84Daniel Dunbar 35fcdd8fe26de3eee44927600bf1853e21bd90dd84Daniel Dunbar // Add #pragma handlers. These are removed and destroyed in the 36fcdd8fe26de3eee44927600bf1853e21bd90dd84Daniel Dunbar // destructor. 37cbb98edd530787c2ac019e437e7c599df8004ba7Daniel Dunbar AlignHandler.reset(new PragmaAlignHandler(actions)); 38cbb98edd530787c2ac019e437e7c599df8004ba7Daniel Dunbar PP.AddPragmaHandler(AlignHandler.get()); 39cbb98edd530787c2ac019e437e7c599df8004ba7Daniel Dunbar 40aa8b0d19244a6e7e8e5798fcc6aef003c274d3e0Eli Friedman GCCVisibilityHandler.reset(new PragmaGCCVisibilityHandler(actions)); 41aa8b0d19244a6e7e8e5798fcc6aef003c274d3e0Eli Friedman PP.AddPragmaHandler("GCC", GCCVisibilityHandler.get()); 42aa8b0d19244a6e7e8e5798fcc6aef003c274d3e0Eli Friedman 439b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis OptionsHandler.reset(new PragmaOptionsHandler(actions)); 449b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PP.AddPragmaHandler(OptionsHandler.get()); 459b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis 469b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PackHandler.reset(new PragmaPackHandler(actions)); 479b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PP.AddPragmaHandler(PackHandler.get()); 4862c9258f4a71569a66d805fc7776526a2c76b34eFariborz Jahanian 4962c9258f4a71569a66d805fc7776526a2c76b34eFariborz Jahanian MSStructHandler.reset(new PragmaMSStructHandler(actions)); 5062c9258f4a71569a66d805fc7776526a2c76b34eFariborz Jahanian PP.AddPragmaHandler(MSStructHandler.get()); 519b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis 529b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis UnusedHandler.reset(new PragmaUnusedHandler(actions, *this)); 539b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PP.AddPragmaHandler(UnusedHandler.get()); 549b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis 559b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis WeakHandler.reset(new PragmaWeakHandler(actions)); 569b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PP.AddPragmaHandler(WeakHandler.get()); 57321b8179afaf803dcc56b2a19f7b0891a03c92c8Peter Collingbourne 58321b8179afaf803dcc56b2a19f7b0891a03c92c8Peter Collingbourne FPContractHandler.reset(new PragmaFPContractHandler(actions, *this)); 59321b8179afaf803dcc56b2a19f7b0891a03c92c8Peter Collingbourne PP.AddPragmaHandler("STDC", FPContractHandler.get()); 60f315fa81eef1977b3457fd7a7d4639e060fe7278Peter Collingbourne 61f315fa81eef1977b3457fd7a7d4639e060fe7278Peter Collingbourne if (getLang().OpenCL) { 62f315fa81eef1977b3457fd7a7d4639e060fe7278Peter Collingbourne OpenCLExtensionHandler.reset( 63f315fa81eef1977b3457fd7a7d4639e060fe7278Peter Collingbourne new PragmaOpenCLExtensionHandler(actions, *this)); 64f315fa81eef1977b3457fd7a7d4639e060fe7278Peter Collingbourne PP.AddPragmaHandler("OPENCL", OpenCLExtensionHandler.get()); 65f315fa81eef1977b3457fd7a7d4639e060fe7278Peter Collingbourne 66f315fa81eef1977b3457fd7a7d4639e060fe7278Peter Collingbourne PP.AddPragmaHandler("OPENCL", FPContractHandler.get()); 67f315fa81eef1977b3457fd7a7d4639e060fe7278Peter Collingbourne } 68f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor 69f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor PP.setCodeCompletionHandler(*this); 705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 720102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner/// If a crash happens while the parser is active, print out a line indicating 730102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner/// what the current token is. 740102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattnervoid PrettyStackTraceParserEntry::print(llvm::raw_ostream &OS) const { 750102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner const Token &Tok = P.getCurToken(); 76ddcbc0a72a04a5ae2493088f1437200a9ea480b1Chris Lattner if (Tok.is(tok::eof)) { 770102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner OS << "<eof> parser at end of file\n"; 780102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner return; 790102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner } 801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 81ddcbc0a72a04a5ae2493088f1437200a9ea480b1Chris Lattner if (Tok.getLocation().isInvalid()) { 82ddcbc0a72a04a5ae2493088f1437200a9ea480b1Chris Lattner OS << "<unknown> parser at unknown location\n"; 83ddcbc0a72a04a5ae2493088f1437200a9ea480b1Chris Lattner return; 84ddcbc0a72a04a5ae2493088f1437200a9ea480b1Chris Lattner } 851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 860102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner const Preprocessor &PP = P.getPreprocessor(); 870102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner Tok.getLocation().print(OS, PP.getSourceManager()); 889fa31dd71e0414e2ca905380e2f8d42710b22c82Daniel Dunbar if (Tok.isAnnotation()) 899fa31dd71e0414e2ca905380e2f8d42710b22c82Daniel Dunbar OS << ": at annotation token \n"; 909fa31dd71e0414e2ca905380e2f8d42710b22c82Daniel Dunbar else 919fa31dd71e0414e2ca905380e2f8d42710b22c82Daniel Dunbar OS << ": current parser token '" << PP.getSpelling(Tok) << "'\n"; 92f780abc21c39cd4731b9e38f2d2d9f7d1510bd7bDouglas Gregor} 935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 940102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner 953cbfe2c4159e0a219ae660d50625c013aa4afbd0Chris LattnerDiagnosticBuilder Parser::Diag(SourceLocation Loc, unsigned DiagID) { 9633e4e70c8c0a17e0ccb7465d96556b077a68ecb1Argyrios Kyrtzidis return Diags.Report(Loc, DiagID); 971ab3b96de160e4fbffec2a776e284a48a3bb543dChris Lattner} 981ab3b96de160e4fbffec2a776e284a48a3bb543dChris Lattner 993cbfe2c4159e0a219ae660d50625c013aa4afbd0Chris LattnerDiagnosticBuilder Parser::Diag(const Token &Tok, unsigned DiagID) { 1001ab3b96de160e4fbffec2a776e284a48a3bb543dChris Lattner return Diag(Tok.getLocation(), DiagID); 1015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 1025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1034b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor/// \brief Emits a diagnostic suggesting parentheses surrounding a 1044b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor/// given range. 1054b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor/// 1064b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor/// \param Loc The location where we'll emit the diagnostic. 1074b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor/// \param Loc The kind of diagnostic to emit. 1084b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor/// \param ParenRange Source range enclosing code that should be parenthesized. 1094b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregorvoid Parser::SuggestParentheses(SourceLocation Loc, unsigned DK, 1104b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor SourceRange ParenRange) { 111b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor SourceLocation EndLoc = PP.getLocForEndOfToken(ParenRange.getEnd()); 112b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor if (!ParenRange.getEnd().isFileID() || EndLoc.isInvalid()) { 1134b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor // We can't display the parentheses, so just dig the 1144b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor // warning/error and return. 1154b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor Diag(Loc, DK); 1164b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor return; 1174b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor } 1181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Diag(Loc, DK) 120849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor << FixItHint::CreateInsertion(ParenRange.getBegin(), "(") 121849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor << FixItHint::CreateInsertion(EndLoc, ")"); 1224b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor} 1234b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor 1245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// MatchRHSPunctuation - For punctuation with a LHS and RHS (e.g. '['/']'), 1255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// this helper function matches and consumes the specified RHS token if 1265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// present. If not present, it emits the specified diagnostic indicating 1275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// that the parser failed to match the RHS of the token at LHSLoc. LHSName 1285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// should be the name of the unmatched LHS token. 1295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid SpencerSourceLocation Parser::MatchRHSPunctuation(tok::TokenKind RHSTok, 1305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation LHSLoc) { 131a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 132000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.is(RHSTok)) 1335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return ConsumeAnyToken(); 134a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 1355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation R = Tok.getLocation(); 1365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const char *LHSName = "unknown"; 1375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer diag::kind DID = diag::err_parse_error; 1385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (RHSTok) { 1395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer default: break; 1405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::r_paren : LHSName = "("; DID = diag::err_expected_rparen; break; 1415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::r_brace : LHSName = "{"; DID = diag::err_expected_rbrace; break; 1425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::r_square: LHSName = "["; DID = diag::err_expected_rsquare; break; 1435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::greater: LHSName = "<"; DID = diag::err_expected_greater; break; 144bf36e25224b959595af84337339103ebc542ff8cPeter Collingbourne case tok::greatergreatergreater: 145bf36e25224b959595af84337339103ebc542ff8cPeter Collingbourne LHSName = "<<<"; DID = diag::err_expected_ggg; break; 1465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(Tok, DID); 14828eb7e992b9a266abb300da25b6d3c1557cec361Chris Lattner Diag(LHSLoc, diag::note_matching) << LHSName; 1499fc1873a3da0af8ef91e4f1927f3540f9af2038fChris Lattner SkipUntil(RHSTok); 1505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return R; 1515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 1525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 153837b1a37116cf4e64f8bb7db34982dee1fba7647John McCallstatic bool IsCommonTypo(tok::TokenKind ExpectedTok, const Token &Tok) { 154837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall switch (ExpectedTok) { 155837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall case tok::semi: return Tok.is(tok::colon); // : for ; 156837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall default: return false; 157837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall } 158837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall} 159837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall 1605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ExpectAndConsume - The parser expects that 'ExpectedTok' is next in the 1615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// input. If so, it is consumed and false is returned. 1625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 1635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// If the input is malformed, this emits the specified diagnostic. Next, if 1645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// SkipToTok is specified, it calls SkipUntil(SkipToTok). Finally, true is 1655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// returned. 1665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerbool Parser::ExpectAndConsume(tok::TokenKind ExpectedTok, unsigned DiagID, 1675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const char *Msg, tok::TokenKind SkipToTok) { 168dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor if (Tok.is(ExpectedTok) || Tok.is(tok::code_completion)) { 1695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeAnyToken(); 1705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 1715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 172a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 173837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall // Detect common single-character typos and resume. 174837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall if (IsCommonTypo(ExpectedTok, Tok)) { 175837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall SourceLocation Loc = Tok.getLocation(); 176837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall Diag(Loc, DiagID) 177837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall << Msg 178837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall << FixItHint::CreateReplacement(SourceRange(Loc), 179837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall getTokenSimpleSpelling(ExpectedTok)); 180837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall ConsumeAnyToken(); 181837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall 182837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall // Pretend there wasn't a problem. 183837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall return false; 184837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall } 185837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall 1864b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor const char *Spelling = 0; 187b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor SourceLocation EndLoc = PP.getLocForEndOfToken(PrevTokLocation); 1881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (EndLoc.isValid() && 189b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor (Spelling = tok::getTokenSimpleSpelling(ExpectedTok))) { 1904b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor // Show what code to insert to fix this problem. 1911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Diag(EndLoc, DiagID) 1924b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor << Msg 193849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor << FixItHint::CreateInsertion(EndLoc, Spelling); 1944b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor } else 1954b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor Diag(Tok, DiagID) << Msg; 1964b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor 1975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (SkipToTok != tok::unknown) 1985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SkipUntil(SkipToTok); 1995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return true; 2005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 2015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2029ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregorbool Parser::ExpectAndConsumeSemi(unsigned DiagID) { 2039ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor if (Tok.is(tok::semi) || Tok.is(tok::code_completion)) { 2049ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor ConsumeAnyToken(); 2059ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor return false; 2069ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor } 2079ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor 2089ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor if ((Tok.is(tok::r_paren) || Tok.is(tok::r_square)) && 2099ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor NextToken().is(tok::semi)) { 2109ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor Diag(Tok, diag::err_extraneous_token_before_semi) 2119ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor << PP.getSpelling(Tok) 2129ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor << FixItHint::CreateRemoval(Tok.getLocation()); 2139ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor ConsumeAnyToken(); // The ')' or ']'. 2149ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor ConsumeToken(); // The ';'. 2159ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor return false; 2169ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor } 2179ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor 2189ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor return ExpectAndConsume(tok::semi, DiagID); 2199ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor} 2209ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor 2215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 2225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// Error recovery. 2235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 2245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// SkipUntil - Read tokens until we get to the specified token, then consume 226012cf464254804279efa84e21b4b493dde76c5f1Chris Lattner/// it (unless DontConsume is true). Because we cannot guarantee that the 2275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// token will ever occur, this skips to the next token, or to some likely 2285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// good stopping point. If StopAtSemi is true, skipping will stop at a ';' 2295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// character. 230a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump/// 2315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// If SkipUntil finds the specified token, it returns true, otherwise it 232a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump/// returns false. 2335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerbool Parser::SkipUntil(const tok::TokenKind *Toks, unsigned NumToks, 2343437f1f1294499d4ef306c1089fcb3e29ec2aa68Argyrios Kyrtzidis bool StopAtSemi, bool DontConsume, 2353437f1f1294499d4ef306c1089fcb3e29ec2aa68Argyrios Kyrtzidis bool StopAtCodeCompletion) { 2365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // We always want this function to skip at least one token if the first token 2375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // isn't T and if not at EOF. 2385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool isFirstTokenSkipped = true; 2395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer while (1) { 2405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If we found one of the tokens, stop and return true. 2415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer for (unsigned i = 0; i != NumToks; ++i) { 242000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.is(Toks[i])) { 2435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (DontConsume) { 2445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Noop, don't consume the token. 2455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } else { 2465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeAnyToken(); 2475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return true; 2495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 251a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 2525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (Tok.getKind()) { 2535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::eof: 2545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Ran out of tokens. 2555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 256dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor 257dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor case tok::code_completion: 2583437f1f1294499d4ef306c1089fcb3e29ec2aa68Argyrios Kyrtzidis if (!StopAtCodeCompletion) 2593437f1f1294499d4ef306c1089fcb3e29ec2aa68Argyrios Kyrtzidis ConsumeToken(); 260dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor return false; 261dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor 2625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::l_paren: 2635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Recursively skip properly-nested parens. 2645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeParen(); 2653437f1f1294499d4ef306c1089fcb3e29ec2aa68Argyrios Kyrtzidis SkipUntil(tok::r_paren, false, false, StopAtCodeCompletion); 2665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 2675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::l_square: 2685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Recursively skip properly-nested square brackets. 2695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeBracket(); 2703437f1f1294499d4ef306c1089fcb3e29ec2aa68Argyrios Kyrtzidis SkipUntil(tok::r_square, false, false, StopAtCodeCompletion); 2715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 2725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::l_brace: 2735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Recursively skip properly-nested braces. 2745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeBrace(); 2753437f1f1294499d4ef306c1089fcb3e29ec2aa68Argyrios Kyrtzidis SkipUntil(tok::r_brace, false, false, StopAtCodeCompletion); 2765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 277a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 2785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Okay, we found a ']' or '}' or ')', which we think should be balanced. 2795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Since the user wasn't looking for this token (if they were, it would 2805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // already be handled), this isn't balanced. If there is a LHS token at a 2815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // higher level, we will assume that this matches the unbalanced token 2825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // and return it. Otherwise, this is a spurious RHS token, which we skip. 2835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::r_paren: 2845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (ParenCount && !isFirstTokenSkipped) 2855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; // Matches something. 2865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeParen(); 2875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 2885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::r_square: 2895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (BracketCount && !isFirstTokenSkipped) 2905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; // Matches something. 2915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeBracket(); 2925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 2935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::r_brace: 2945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (BraceCount && !isFirstTokenSkipped) 2955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; // Matches something. 2965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeBrace(); 2975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 298a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 2995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::string_literal: 3005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::wide_string_literal: 3015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeStringToken(); 3025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 30355edca9d7d6a50cbda6f036b05a0cb8d42f5a010Fariborz Jahanian 30455edca9d7d6a50cbda6f036b05a0cb8d42f5a010Fariborz Jahanian case tok::at: 30555edca9d7d6a50cbda6f036b05a0cb8d42f5a010Fariborz Jahanian return false; 30655edca9d7d6a50cbda6f036b05a0cb8d42f5a010Fariborz Jahanian 3075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::semi: 3085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (StopAtSemi) 3095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 3105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // FALL THROUGH. 3115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer default: 3125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Skip this token. 3135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeToken(); 3145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 3155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 3165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer isFirstTokenSkipped = false; 317a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump } 3185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 3195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 3215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// Scope manipulation 3225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 3235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// EnterScope - Start a new scope. 3255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencervoid Parser::EnterScope(unsigned ScopeFlags) { 3269e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner if (NumCachedScopes) { 3279e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner Scope *N = ScopeCache[--NumCachedScopes]; 32823c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor N->Init(getCurScope(), ScopeFlags); 32923c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Actions.CurScope = N; 3305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } else { 3319c4eb1f3438370355f51dc8c62f2ca4803e3338dArgyrios Kyrtzidis Actions.CurScope = new Scope(getCurScope(), ScopeFlags, Diags); 3325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 3335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 3345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ExitScope - Pop a scope off the scope stack. 3365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencervoid Parser::ExitScope() { 33723c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor assert(getCurScope() && "Scope imbalance!"); 3385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 33990ae68aae98f12fe1950c63e2f6bd0fabce6cb1eChris Lattner // Inform the actions module that this scope is going away if there are any 34090ae68aae98f12fe1950c63e2f6bd0fabce6cb1eChris Lattner // decls in it. 34123c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor if (!getCurScope()->decl_empty()) 34223c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Actions.ActOnPopScope(Tok.getLocation(), getCurScope()); 343a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 34423c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Scope *OldScope = getCurScope(); 34523c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Actions.CurScope = OldScope->getParent(); 346a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 3479e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner if (NumCachedScopes == ScopeCacheSize) 3489e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner delete OldScope; 3495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer else 3509e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner ScopeCache[NumCachedScopes++] = OldScope; 3515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 3525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 3575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// C99 6.9: External Definitions. 3585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 3595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid SpencerParser::~Parser() { 3615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If we still have scopes active, delete the scope tree. 36223c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor delete getCurScope(); 36323c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Actions.CurScope = 0; 36423c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor 3655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Free the scope cache. 3669e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner for (unsigned i = 0, e = NumCachedScopes; i != e; ++i) 3679e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner delete ScopeCache[i]; 368fcdd8fe26de3eee44927600bf1853e21bd90dd84Daniel Dunbar 3698387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet // Free LateParsedTemplatedFunction nodes. 3708387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet for (LateParsedTemplateMapT::iterator it = LateParsedTemplateMap.begin(); 3718387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet it != LateParsedTemplateMap.end(); ++it) 3728387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet delete it->second; 3738387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet 374fcdd8fe26de3eee44927600bf1853e21bd90dd84Daniel Dunbar // Remove the pragma handlers we installed. 375cbb98edd530787c2ac019e437e7c599df8004ba7Daniel Dunbar PP.RemovePragmaHandler(AlignHandler.get()); 376cbb98edd530787c2ac019e437e7c599df8004ba7Daniel Dunbar AlignHandler.reset(); 377aa8b0d19244a6e7e8e5798fcc6aef003c274d3e0Eli Friedman PP.RemovePragmaHandler("GCC", GCCVisibilityHandler.get()); 378aa8b0d19244a6e7e8e5798fcc6aef003c274d3e0Eli Friedman GCCVisibilityHandler.reset(); 3799b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PP.RemovePragmaHandler(OptionsHandler.get()); 380861800c676004eabed5927f0552620d06c80a40aDaniel Dunbar OptionsHandler.reset(); 3819b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PP.RemovePragmaHandler(PackHandler.get()); 3824726d03ab3abce41911c31d1354a18f1258cae4dTed Kremenek PackHandler.reset(); 38362c9258f4a71569a66d805fc7776526a2c76b34eFariborz Jahanian PP.RemovePragmaHandler(MSStructHandler.get()); 38462c9258f4a71569a66d805fc7776526a2c76b34eFariborz Jahanian MSStructHandler.reset(); 3859b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PP.RemovePragmaHandler(UnusedHandler.get()); 3864726d03ab3abce41911c31d1354a18f1258cae4dTed Kremenek UnusedHandler.reset(); 3879b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PP.RemovePragmaHandler(WeakHandler.get()); 3889991479ad5dde617168cc1e4b18425cdbbfd9fa9Eli Friedman WeakHandler.reset(); 389f315fa81eef1977b3457fd7a7d4639e060fe7278Peter Collingbourne 390f315fa81eef1977b3457fd7a7d4639e060fe7278Peter Collingbourne if (getLang().OpenCL) { 391f315fa81eef1977b3457fd7a7d4639e060fe7278Peter Collingbourne PP.RemovePragmaHandler("OPENCL", OpenCLExtensionHandler.get()); 392f315fa81eef1977b3457fd7a7d4639e060fe7278Peter Collingbourne OpenCLExtensionHandler.reset(); 393f315fa81eef1977b3457fd7a7d4639e060fe7278Peter Collingbourne PP.RemovePragmaHandler("OPENCL", FPContractHandler.get()); 394f315fa81eef1977b3457fd7a7d4639e060fe7278Peter Collingbourne } 395f315fa81eef1977b3457fd7a7d4639e060fe7278Peter Collingbourne 396321b8179afaf803dcc56b2a19f7b0891a03c92c8Peter Collingbourne PP.RemovePragmaHandler("STDC", FPContractHandler.get()); 397321b8179afaf803dcc56b2a19f7b0891a03c92c8Peter Collingbourne FPContractHandler.reset(); 398f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor PP.clearCodeCompletionHandler(); 3995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 4005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 4015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// Initialize - Warm up the parser. 4025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 4035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencervoid Parser::Initialize() { 40431e057270232c1c37602579cb6461c2704175672Chris Lattner // Create the translation unit scope. Install it as the current scope. 40523c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor assert(getCurScope() == 0 && "A scope is already active?"); 40631e057270232c1c37602579cb6461c2704175672Chris Lattner EnterScope(Scope::DeclScope); 407c1a3e5e73859ece9f106ae9d84c78bef4111956aDouglas Gregor Actions.ActOnTranslationUnitScope(getCurScope()); 408c1a3e5e73859ece9f106ae9d84c78bef4111956aDouglas Gregor 409c1a3e5e73859ece9f106ae9d84c78bef4111956aDouglas Gregor // Prime the lexer look-ahead. 410c1a3e5e73859ece9f106ae9d84c78bef4111956aDouglas Gregor ConsumeToken(); 411a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 412000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.is(tok::eof) && 413f72617544287acf0281c3b1a733bcb22a02e6ca4Chris Lattner !getLang().CPlusPlus) // Empty source file is an extension in C 4145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(Tok, diag::ext_empty_source_file); 415a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 41634870da70fa42b0391b79627ebd0cfc6eb22213bChris Lattner // Initialization for Objective-C context sensitive keywords recognition. 417a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek // Referenced in Parser::ParseObjCTypeQualifierList. 41834870da70fa42b0391b79627ebd0cfc6eb22213bChris Lattner if (getLang().ObjC1) { 419a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek ObjCTypeQuals[objc_in] = &PP.getIdentifierTable().get("in"); 420a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek ObjCTypeQuals[objc_out] = &PP.getIdentifierTable().get("out"); 421a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek ObjCTypeQuals[objc_inout] = &PP.getIdentifierTable().get("inout"); 422a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek ObjCTypeQuals[objc_oneway] = &PP.getIdentifierTable().get("oneway"); 423a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek ObjCTypeQuals[objc_bycopy] = &PP.getIdentifierTable().get("bycopy"); 424a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek ObjCTypeQuals[objc_byref] = &PP.getIdentifierTable().get("byref"); 42534870da70fa42b0391b79627ebd0cfc6eb22213bChris Lattner } 426662e8b5647adbb1bc9eeceece7b64600cfa87471Daniel Dunbar 4277eeb4ec11043d4860361348f2b19299d957d47a9Anders Carlsson Ident_final = 0; 4287eeb4ec11043d4860361348f2b19299d957d47a9Anders Carlsson Ident_override = 0; 4291f3b6fdabbb10779a473d6315154d7325ce20aeaAnders Carlsson 430662e8b5647adbb1bc9eeceece7b64600cfa87471Daniel Dunbar Ident_super = &PP.getIdentifierTable().get("super"); 43182287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson 43282287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson if (getLang().AltiVec) { 43382287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson Ident_vector = &PP.getIdentifierTable().get("vector"); 43482287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson Ident_pixel = &PP.getIdentifierTable().get("pixel"); 43582287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson } 4360a0d2b179085a52c10402feebeb6db8b4d96a140Douglas Gregor 4370a0d2b179085a52c10402feebeb6db8b4d96a140Douglas Gregor Ident_introduced = 0; 4380a0d2b179085a52c10402feebeb6db8b4d96a140Douglas Gregor Ident_deprecated = 0; 4390a0d2b179085a52c10402feebeb6db8b4d96a140Douglas Gregor Ident_obsoleted = 0; 440b53e417ba487f4193ef3b0485b420e0fdae643a2Douglas Gregor Ident_unavailable = 0; 44128bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley 44228bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley Ident__exception_code = Ident__exception_info = Ident__abnormal_termination = 0; 44328bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley Ident___exception_code = Ident___exception_info = Ident___abnormal_termination = 0; 44428bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley Ident_GetExceptionCode = Ident_GetExceptionInfo = Ident_AbnormalTermination = 0; 44528bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley 44628bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley if(getLang().Borland) { 44728bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley Ident__exception_info = PP.getIdentifierInfo("_exception_info"); 44828bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley Ident___exception_info = PP.getIdentifierInfo("__exception_info"); 44928bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley Ident_GetExceptionInfo = PP.getIdentifierInfo("GetExceptionInformation"); 45028bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley Ident__exception_code = PP.getIdentifierInfo("_exception_code"); 45128bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley Ident___exception_code = PP.getIdentifierInfo("__exception_code"); 45228bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley Ident_GetExceptionCode = PP.getIdentifierInfo("GetExceptionCode"); 45328bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley Ident__abnormal_termination = PP.getIdentifierInfo("_abnormal_termination"); 45428bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley Ident___abnormal_termination = PP.getIdentifierInfo("__abnormal_termination"); 45528bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley Ident_AbnormalTermination = PP.getIdentifierInfo("AbnormalTermination"); 45628bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley 45728bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley PP.SetPoisonReason(Ident__exception_code,diag::err_seh___except_block); 45828bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley PP.SetPoisonReason(Ident___exception_code,diag::err_seh___except_block); 45928bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley PP.SetPoisonReason(Ident_GetExceptionCode,diag::err_seh___except_block); 46028bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley PP.SetPoisonReason(Ident__exception_info,diag::err_seh___except_filter); 46128bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley PP.SetPoisonReason(Ident___exception_info,diag::err_seh___except_filter); 46228bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley PP.SetPoisonReason(Ident_GetExceptionInfo,diag::err_seh___except_filter); 46328bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley PP.SetPoisonReason(Ident__abnormal_termination,diag::err_seh___finally_block); 46428bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley PP.SetPoisonReason(Ident___abnormal_termination,diag::err_seh___finally_block); 46528bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley PP.SetPoisonReason(Ident_AbnormalTermination,diag::err_seh___finally_block); 46628bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley } 4675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 4685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 4695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseTopLevelDecl - Parse one top-level declaration, return whatever the 4705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// action tells us to. This returns true if the EOF was encountered. 471682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattnerbool Parser::ParseTopLevelDecl(DeclGroupPtrTy &Result) { 472b918d0f5d8f147e1e26c34e6cf42a79af2d2ec41Argyrios Kyrtzidis 473b918d0f5d8f147e1e26c34e6cf42a79af2d2ec41Argyrios Kyrtzidis while (Tok.is(tok::annot_pragma_unused)) 474b918d0f5d8f147e1e26c34e6cf42a79af2d2ec41Argyrios Kyrtzidis HandlePragmaUnused(); 475b918d0f5d8f147e1e26c34e6cf42a79af2d2ec41Argyrios Kyrtzidis 476682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner Result = DeclGroupPtrTy(); 4779299f3fa85796613cc787a2062c9562d07c8613eChris Lattner if (Tok.is(tok::eof)) { 4788387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet // Late template parsing can begin. 4798387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet if (getLang().DelayedTemplateParsing) 4808387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet Actions.SetLateTemplateParser(LateTemplateParserCallback, this); 4818387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet 4829299f3fa85796613cc787a2062c9562d07c8613eChris Lattner Actions.ActOnEndOfTranslationUnit(); 4839299f3fa85796613cc787a2062c9562d07c8613eChris Lattner return true; 4849299f3fa85796613cc787a2062c9562d07c8613eChris Lattner } 485a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 4860b7e678a11ece4288dc01aebb5b17e5eef8f8d2dJohn McCall ParsedAttributesWithRange attrs(AttrFactory); 4877f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCall MaybeParseCXX0XAttributes(attrs); 4887f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCall MaybeParseMicrosoftAttributes(attrs); 489334d47e92e9f241576fdeb7477b69a03136ba854Francois Pichet 4907f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCall Result = ParseExternalDeclaration(attrs); 4915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 4925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 4935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 4945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseTranslationUnit: 4955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// translation-unit: [C99 6.9] 496a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump/// external-declaration 497a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump/// translation-unit external-declaration 4985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencervoid Parser::ParseTranslationUnit() { 4998935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor Initialize(); 500a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 501682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner DeclGroupPtrTy Res; 50289307ffaf8acf4d6fdffd72b607ca4fbcfdffc9dSteve Naroff while (!ParseTopLevelDecl(Res)) 5035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /*parse them all*/; 5041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 50506f548596beef4c0a227a45cba996497f99566c0Chris Lattner ExitScope(); 50623c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor assert(getCurScope() == 0 && "Scope imbalance!"); 5075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 5085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 5095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseExternalDeclaration: 51090b93d6f6961edd8f17e089253d655892adc1ef7Chris Lattner/// 511c19923dda3d28f67aab4726cd40bb07032758383Douglas Gregor/// external-declaration: [C99 6.9], declaration: [C++ dcl.dcl] 512c3018153a11afe91849748a93d920040a571b76cChris Lattner/// function-definition 513c3018153a11afe91849748a93d920040a571b76cChris Lattner/// declaration 514a1d71aea847a50b3acbd187d2ae9e5c1ead0f4e2Douglas Gregor/// [C++0x] empty-declaration 5155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [GNU] asm-definition 516c3018153a11afe91849748a93d920040a571b76cChris Lattner/// [GNU] __extension__ external-declaration 5175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [OBJC] objc-class-definition 5185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [OBJC] objc-class-declaration 5195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [OBJC] objc-alias-declaration 5205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [OBJC] objc-protocol-definition 5215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [OBJC] objc-method-definition 5225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [OBJC] @end 523c19923dda3d28f67aab4726cd40bb07032758383Douglas Gregor/// [C++] linkage-specification 5245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [GNU] asm-definition: 5255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// simple-asm-expr ';' 5265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 527a1d71aea847a50b3acbd187d2ae9e5c1ead0f4e2Douglas Gregor/// [C++0x] empty-declaration: 528a1d71aea847a50b3acbd187d2ae9e5c1ead0f4e2Douglas Gregor/// ';' 529a1d71aea847a50b3acbd187d2ae9e5c1ead0f4e2Douglas Gregor/// 53045f965581935791a018df829a14dff53c1dd8f47Douglas Gregor/// [C++0x/GNU] 'extern' 'template' declaration 5317f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCallParser::DeclGroupPtrTy 5327f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCallParser::ParseExternalDeclaration(ParsedAttributesWithRange &attrs, 5337f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCall ParsingDeclSpec *DS) { 53436d36806f1972f7ec1d2a3f59155187278c56508Argyrios Kyrtzidis ParenBraceBracketBalancer BalancerRAIIObj(*this); 53536d36806f1972f7ec1d2a3f59155187278c56508Argyrios Kyrtzidis 536d226f65006733ed7f709c3174f22ce33391cb58fJohn McCall Decl *SingleDecl = 0; 5375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (Tok.getKind()) { 5385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::semi: 539a1d71aea847a50b3acbd187d2ae9e5c1ead0f4e2Douglas Gregor if (!getLang().CPlusPlus0x) 540a1d71aea847a50b3acbd187d2ae9e5c1ead0f4e2Douglas Gregor Diag(Tok, diag::ext_top_level_semi) 541849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor << FixItHint::CreateRemoval(Tok.getLocation()); 5421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeToken(); 5445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // TODO: Invoke action for top-level semicolon. 545682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return DeclGroupPtrTy(); 54690b93d6f6961edd8f17e089253d655892adc1ef7Chris Lattner case tok::r_brace: 54790b93d6f6961edd8f17e089253d655892adc1ef7Chris Lattner Diag(Tok, diag::err_expected_external_declaration); 54890b93d6f6961edd8f17e089253d655892adc1ef7Chris Lattner ConsumeBrace(); 549682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return DeclGroupPtrTy(); 55090b93d6f6961edd8f17e089253d655892adc1ef7Chris Lattner case tok::eof: 55190b93d6f6961edd8f17e089253d655892adc1ef7Chris Lattner Diag(Tok, diag::err_expected_external_declaration); 552682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return DeclGroupPtrTy(); 553c3018153a11afe91849748a93d920040a571b76cChris Lattner case tok::kw___extension__: { 554c46d1a1f8af67a87689d7db9eaf96027282ccaeaChris Lattner // __extension__ silences extension warnings in the subexpression. 555c46d1a1f8af67a87689d7db9eaf96027282ccaeaChris Lattner ExtensionRAIIObject O(Diags); // Use RAII to do this. 55639146d6497ad5e7ca8ef639221e7b3e15d07c888Chris Lattner ConsumeToken(); 5577f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCall return ParseExternalDeclaration(attrs); 558c3018153a11afe91849748a93d920040a571b76cChris Lattner } 559dfab6cb59a703f2ce4d58371652ce879f4c85a09Anders Carlsson case tok::kw_asm: { 5607f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCall ProhibitAttributes(attrs); 561bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt 56221e006e51a7f9889f55f5bc7b3ca8b50d17571ecAbramo Bagnara SourceLocation StartLoc = Tok.getLocation(); 56321e006e51a7f9889f55f5bc7b3ca8b50d17571ecAbramo Bagnara SourceLocation EndLoc; 56421e006e51a7f9889f55f5bc7b3ca8b50d17571ecAbramo Bagnara ExprResult Result(ParseSimpleAsm(&EndLoc)); 565a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 5663f9424f3206b834b5dd0e7c403348651ab6fafbbAnders Carlsson ExpectAndConsume(tok::semi, diag::err_expected_semi_after, 5673f9424f3206b834b5dd0e7c403348651ab6fafbbAnders Carlsson "top-level asm block"); 568dfab6cb59a703f2ce4d58371652ce879f4c85a09Anders Carlsson 569682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner if (Result.isInvalid()) 570682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return DeclGroupPtrTy(); 57121e006e51a7f9889f55f5bc7b3ca8b50d17571ecAbramo Bagnara SingleDecl = Actions.ActOnFileScopeAsmDecl(Result.get(), StartLoc, EndLoc); 572682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner break; 573dfab6cb59a703f2ce4d58371652ce879f4c85a09Anders Carlsson } 5745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::at: 575682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner // @ is not a legal token unless objc is enabled, no need to check for ObjC. 576682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner /// FIXME: ParseObjCAtDirectives should return a DeclGroup for things like 577682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner /// @class foo, bar; 578682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner SingleDecl = ParseObjCAtDirectives(); 579682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner break; 5805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::minus: 5815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::plus: 582682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner if (!getLang().ObjC1) { 583682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner Diag(Tok, diag::err_expected_external_declaration); 584682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner ConsumeToken(); 585682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return DeclGroupPtrTy(); 586682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner } 587682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner SingleDecl = ParseObjCMethodDefinition(); 588682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner break; 589791215b7a24666912c0b71175d2ca5ba082f666eDouglas Gregor case tok::code_completion: 59023c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Actions.CodeCompleteOrdinaryName(getCurScope(), 591f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall ObjCImpDecl? Sema::PCC_ObjCImplementation 592f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall : Sema::PCC_Namespace); 593dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor ConsumeCodeCompletionToken(); 5947f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCall return ParseExternalDeclaration(attrs); 595f780abc21c39cd4731b9e38f2d2d9f7d1510bd7bDouglas Gregor case tok::kw_using: 5968f08cb7d0b97786b17ef05e05caa55aad4d6bd39Chris Lattner case tok::kw_namespace: 5975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::kw_typedef: 598adcac8824a9cff13f1ef61a69e38c1041cba12eeDouglas Gregor case tok::kw_template: 599adcac8824a9cff13f1ef61a69e38c1041cba12eeDouglas Gregor case tok::kw_export: // As in 'export template' 600511d7aba3b12853fdb88729a0313b80a60eab8adAnders Carlsson case tok::kw_static_assert: 601c6eb44b321c543c5bcf28727228a0cceced57e2ePeter Collingbourne case tok::kw__Static_assert: 602bae35118fc5cea2da08567dbb9763af7f906dae2Chris Lattner // A function definition cannot start with a these keywords. 60397144fc41a9419bf6d74fc9450e8ef3f6e11f7e0Chris Lattner { 60497144fc41a9419bf6d74fc9450e8ef3f6e11f7e0Chris Lattner SourceLocation DeclEnd; 605c5be7b0fc804d8e6f87298ec03c94d8cccd74f29Fariborz Jahanian StmtVector Stmts(Actions); 6067f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCall return ParseDeclaration(Stmts, Declarator::FileContext, DeclEnd, attrs); 60797144fc41a9419bf6d74fc9450e8ef3f6e11f7e0Chris Lattner } 608d078e641450bbc5a20df8d3b54f87b27e398acb3Sebastian Redl 6097306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor case tok::kw_static: 6107306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor // Parse (then ignore) 'static' prior to a template instantiation. This is 6117306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor // a GCC extension that we intentionally do not support. 6127306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor if (getLang().CPlusPlus && NextToken().is(tok::kw_template)) { 6137306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor Diag(ConsumeToken(), diag::warn_static_inline_explicit_inst_ignored) 6147306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor << 0; 615d078e641450bbc5a20df8d3b54f87b27e398acb3Sebastian Redl SourceLocation DeclEnd; 616c5be7b0fc804d8e6f87298ec03c94d8cccd74f29Fariborz Jahanian StmtVector Stmts(Actions); 6177f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCall return ParseDeclaration(Stmts, Declarator::FileContext, DeclEnd, attrs); 6187306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor } 6197306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor goto dont_know; 6207306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor 6217306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor case tok::kw_inline: 6227306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor if (getLang().CPlusPlus) { 6237306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor tok::TokenKind NextKind = NextToken().getKind(); 6247306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor 6257306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor // Inline namespaces. Allowed as an extension even in C++03. 6267306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor if (NextKind == tok::kw_namespace) { 6277306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor SourceLocation DeclEnd; 6287306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor StmtVector Stmts(Actions); 6297f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCall return ParseDeclaration(Stmts, Declarator::FileContext, DeclEnd, attrs); 6307306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor } 6317306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor 6327306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor // Parse (then ignore) 'inline' prior to a template instantiation. This is 6337306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor // a GCC extension that we intentionally do not support. 6347306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor if (NextKind == tok::kw_template) { 6357306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor Diag(ConsumeToken(), diag::warn_static_inline_explicit_inst_ignored) 6367306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor << 1; 6377306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor SourceLocation DeclEnd; 6387306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor StmtVector Stmts(Actions); 6397f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCall return ParseDeclaration(Stmts, Declarator::FileContext, DeclEnd, attrs); 6407306ebfacfa51ba5270fd20f162f62d2ed813485Douglas Gregor } 641d078e641450bbc5a20df8d3b54f87b27e398acb3Sebastian Redl } 642d078e641450bbc5a20df8d3b54f87b27e398acb3Sebastian Redl goto dont_know; 643d078e641450bbc5a20df8d3b54f87b27e398acb3Sebastian Redl 64445f965581935791a018df829a14dff53c1dd8f47Douglas Gregor case tok::kw_extern: 64545f965581935791a018df829a14dff53c1dd8f47Douglas Gregor if (getLang().CPlusPlus && NextToken().is(tok::kw_template)) { 64645f965581935791a018df829a14dff53c1dd8f47Douglas Gregor // Extern templates 64745f965581935791a018df829a14dff53c1dd8f47Douglas Gregor SourceLocation ExternLoc = ConsumeToken(); 64845f965581935791a018df829a14dff53c1dd8f47Douglas Gregor SourceLocation TemplateLoc = ConsumeToken(); 64945f965581935791a018df829a14dff53c1dd8f47Douglas Gregor SourceLocation DeclEnd; 65045f965581935791a018df829a14dff53c1dd8f47Douglas Gregor return Actions.ConvertDeclToDeclGroup( 65145f965581935791a018df829a14dff53c1dd8f47Douglas Gregor ParseExplicitInstantiation(ExternLoc, TemplateLoc, DeclEnd)); 65245f965581935791a018df829a14dff53c1dd8f47Douglas Gregor } 65345f965581935791a018df829a14dff53c1dd8f47Douglas Gregor // FIXME: Detect C++ linkage specifications here? 654d078e641450bbc5a20df8d3b54f87b27e398acb3Sebastian Redl goto dont_know; 6551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer default: 657d078e641450bbc5a20df8d3b54f87b27e398acb3Sebastian Redl dont_know: 6585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // We can't tell whether this is a function-definition or declaration yet. 6597f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCall if (DS) { 6607f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCall DS->takeAttributesFrom(attrs); 6617f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCall return ParseDeclarationOrFunctionDefinition(*DS); 6627f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCall } else { 6637f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCall return ParseDeclarationOrFunctionDefinition(attrs); 6647f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCall } 6655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 6661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 667682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner // This routine returns a DeclGroup, if the thing we parsed only contains a 668682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner // single decl, convert it now. 669682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return Actions.ConvertDeclToDeclGroup(SingleDecl); 6705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 6715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6721426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor/// \brief Determine whether the current token, if it occurs after a 6731426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor/// declarator, continues a declaration or declaration list. 674c82daefa3062721e98947e08193cd81b4e9df915Chris Lattnerbool Parser::isDeclarationAfterDeclarator() const { 6751426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor return Tok.is(tok::equal) || // int X()= -> not a function def 6761426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor Tok.is(tok::comma) || // int X(), -> not a function def 6771426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor Tok.is(tok::semi) || // int X(); -> not a function def 6781426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor Tok.is(tok::kw_asm) || // int X() __asm__ -> not a function def 6791426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor Tok.is(tok::kw___attribute) || // int X() __attr__ -> not a function def 6801426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor (getLang().CPlusPlus && 6811426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor Tok.is(tok::l_paren)); // int X(0) -> not a function def [C++] 6821426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor} 6831426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor 6841426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor/// \brief Determine whether the current token, if it occurs after a 6851426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor/// declarator, indicates the start of a function definition. 686004659a56916f2f81ede507c12516c146d6c0df3Chris Lattnerbool Parser::isStartOfFunctionDefinition(const ParsingDeclarator &Declarator) { 687075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo Bagnara assert(Declarator.isFunctionDeclarator() && "Isn't a function declarator"); 6885d1c6198cfe55f8de025902c621c0721b640ff60Chris Lattner if (Tok.is(tok::l_brace)) // int X() {} 6895d1c6198cfe55f8de025902c621c0721b640ff60Chris Lattner return true; 6905d1c6198cfe55f8de025902c621c0721b640ff60Chris Lattner 691004659a56916f2f81ede507c12516c146d6c0df3Chris Lattner // Handle K&R C argument lists: int X(f) int f; {} 692004659a56916f2f81ede507c12516c146d6c0df3Chris Lattner if (!getLang().CPlusPlus && 693075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo Bagnara Declarator.getFunctionTypeInfo().isKNRPrototype()) 694004659a56916f2f81ede507c12516c146d6c0df3Chris Lattner return isDeclarationSpecifier(); 695004659a56916f2f81ede507c12516c146d6c0df3Chris Lattner 6965d1c6198cfe55f8de025902c621c0721b640ff60Chris Lattner return Tok.is(tok::colon) || // X() : Base() {} (used for ctors) 6975d1c6198cfe55f8de025902c621c0721b640ff60Chris Lattner Tok.is(tok::kw_try); // X() try { ... } 6981426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor} 6991426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor 7005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseDeclarationOrFunctionDefinition - Parse either a function-definition or 7015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// a declaration. We can't tell which we have until we read up to the 702c4b4e7b8f6ca9b036824e048af49cd2a52b57cdfDouglas Gregor/// compound-statement in function-definition. TemplateParams, if 703c4b4e7b8f6ca9b036824e048af49cd2a52b57cdfDouglas Gregor/// non-NULL, provides the template parameters when we're parsing a 7041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// C++ template-declaration. 7055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 7065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// function-definition: [C99 6.9.1] 707a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner/// decl-specs declarator declaration-list[opt] compound-statement 708a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner/// [C90] function-definition: [C99 6.7.1] - implicit int result 709a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump/// [C90] decl-specs[opt] declarator declaration-list[opt] compound-statement 710a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner/// 7115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// declaration: [C99 6.7] 712697e15f2a028f8997cccb24ecd05099988cfb1a9Chris Lattner/// declaration-specifiers init-declarator-list[opt] ';' 713697e15f2a028f8997cccb24ecd05099988cfb1a9Chris Lattner/// [!C99] init-declarator-list ';' [TODO: warn in c99 mode] 7145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [OMP] threadprivate-directive [TODO] 7155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 716682bf92db408a6cbc3d37b5496a99b6ef85041ecChris LattnerParser::DeclGroupPtrTy 7173acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz JahanianParser::ParseDeclarationOrFunctionDefinition(ParsingDeclSpec &DS, 718bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt AccessSpecifier AS) { 7195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Parse the common declaration-specifiers piece. 7200efc2c1716be4f1c5f1343cad3b047e74861f030Douglas Gregor ParseDeclarationSpecifiers(DS, ParsedTemplateInfo(), AS, DSC_top_level); 721a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 7225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // C99 6.7.2.3p6: Handle "struct-or-union identifier;", "enum { X };" 7235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // declaration-specifiers init-declarator-list[opt] ';' 724000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.is(tok::semi)) { 7255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeToken(); 726d226f65006733ed7f709c3174f22ce33391cb58fJohn McCall Decl *TheDecl = Actions.ParsedFreeStandingDeclSpec(getCurScope(), AS, DS); 72754abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall DS.complete(TheDecl); 728682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return Actions.ConvertDeclToDeclGroup(TheDecl); 7295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 730a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 731246e70f69cb8aeb67225c54690f1c6b25abd5a86Daniel Dunbar // ObjC2 allows prefix attributes on class interfaces and protocols. 732246e70f69cb8aeb67225c54690f1c6b25abd5a86Daniel Dunbar // FIXME: This still needs better diagnostics. We should only accept 733246e70f69cb8aeb67225c54690f1c6b25abd5a86Daniel Dunbar // attributes here, no types, etc. 734000732226610650837478cba97843d19b75f648eChris Lattner if (getLang().ObjC2 && Tok.is(tok::at)) { 735dac269b65eed82182fc3e96566dedd6562dfe11eSteve Naroff SourceLocation AtLoc = ConsumeToken(); // the "@" 7361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (!Tok.isObjCAtKeyword(tok::objc_interface) && 737246e70f69cb8aeb67225c54690f1c6b25abd5a86Daniel Dunbar !Tok.isObjCAtKeyword(tok::objc_protocol)) { 738246e70f69cb8aeb67225c54690f1c6b25abd5a86Daniel Dunbar Diag(Tok, diag::err_objc_unexpected_attr); 739cb53b361bce341c8591333c6997f62e480acc0b4Chris Lattner SkipUntil(tok::semi); // FIXME: better skip? 740682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return DeclGroupPtrTy(); 741cb53b361bce341c8591333c6997f62e480acc0b4Chris Lattner } 742d8ac05753dc4506224d445ff98399c01da3136e5John McCall 74354abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall DS.abort(); 74454abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall 7450de2ae28c603322f05e2d9200c7d457c8b928983Fariborz Jahanian const char *PrevSpec = 0; 746fec54013fcd0eb72642741584ca04c1bc292bef8John McCall unsigned DiagID; 747fec54013fcd0eb72642741584ca04c1bc292bef8John McCall if (DS.SetTypeSpecType(DeclSpec::TST_unspecified, AtLoc, PrevSpec, DiagID)) 748fec54013fcd0eb72642741584ca04c1bc292bef8John McCall Diag(AtLoc, DiagID) << PrevSpec; 7491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 750d226f65006733ed7f709c3174f22ce33391cb58fJohn McCall Decl *TheDecl = 0; 751246e70f69cb8aeb67225c54690f1c6b25abd5a86Daniel Dunbar if (Tok.isObjCAtKeyword(tok::objc_protocol)) 752682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner TheDecl = ParseObjCAtProtocolDeclaration(AtLoc, DS.getAttributes()); 753682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner else 754682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner TheDecl = ParseObjCAtInterfaceDeclaration(AtLoc, DS.getAttributes()); 755682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return Actions.ConvertDeclToDeclGroup(TheDecl); 756dac269b65eed82182fc3e96566dedd6562dfe11eSteve Naroff } 757a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 758c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner // If the declspec consisted only of 'extern' and we have a string 759c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner // literal following it, this must be a C++ linkage specifier like 760c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner // 'extern "C"'. 7613c6f6a7a1bb9969112617a26d2333bab2f6efd65Chris Lattner if (Tok.is(tok::string_literal) && getLang().CPlusPlus && 762c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner DS.getStorageClassSpec() == DeclSpec::SCS_extern && 763682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner DS.getParsedSpecifiers() == DeclSpec::PQ_StorageClassSpecifier) { 764d226f65006733ed7f709c3174f22ce33391cb58fJohn McCall Decl *TheDecl = ParseLinkage(DS, Declarator::FileContext); 765682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return Actions.ConvertDeclToDeclGroup(TheDecl); 766682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner } 767c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner 768d8ac05753dc4506224d445ff98399c01da3136e5John McCall return ParseDeclGroup(DS, Declarator::FileContext, true); 7695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 7705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7713acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz JahanianParser::DeclGroupPtrTy 7727f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCallParser::ParseDeclarationOrFunctionDefinition(ParsedAttributes &attrs, 7733acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz Jahanian AccessSpecifier AS) { 7743acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz Jahanian ParsingDeclSpec DS(*this); 7757f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCall DS.takeAttributesFrom(attrs); 7767f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCall return ParseDeclarationOrFunctionDefinition(DS, AS); 7773acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz Jahanian} 7783acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz Jahanian 7795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseFunctionDefinition - We parsed and verified that the specified 7805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// Declarator is well formed. If this is a K&R-style function, read the 7815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// parameters declaration-list, then start the compound-statement. 7825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 783a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner/// function-definition: [C99 6.9.1] 784a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner/// decl-specs declarator declaration-list[opt] compound-statement 785a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner/// [C90] function-definition: [C99 6.7.1] - implicit int result 786a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump/// [C90] decl-specs[opt] declarator declaration-list[opt] compound-statement 7877ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor/// [C++] function-definition: [C++ 8.4] 78823c4b1883b13dc17484b7214091b73f3ba29096eChris Lattner/// decl-specifier-seq[opt] declarator ctor-initializer[opt] 78923c4b1883b13dc17484b7214091b73f3ba29096eChris Lattner/// function-body 7907ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor/// [C++] function-definition: [C++ 8.4] 791d3a413d3b8eb39bcee5944bc545d9997c1abe492Sebastian Redl/// decl-specifier-seq[opt] declarator function-try-block 7925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 793d226f65006733ed7f709c3174f22ce33391cb58fJohn McCallDecl *Parser::ParseFunctionDefinition(ParsingDeclarator &D, 794075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo Bagnara const ParsedTemplateInfo &TemplateInfo) { 79528bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley // Poison the SEH identifiers so they are flagged as illegal in function bodies 79628bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley PoisonSEHIdentifiersRAIIObject PoisonSEHIdentifiers(*this, true); 797075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo Bagnara const DeclaratorChunk::FunctionTypeInfo &FTI = D.getFunctionTypeInfo(); 798a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 799a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner // If this is C90 and the declspecs were completely missing, fudge in an 800a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner // implicit int. We do this here because this is the only place where 801a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner // declaration-specifiers are completely optional in the grammar. 8022a327d11a07dfbdf20910cebbae38910eda111fdChris Lattner if (getLang().ImplicitInt && D.getDeclSpec().isEmpty()) { 803a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner const char *PrevSpec; 804fec54013fcd0eb72642741584ca04c1bc292bef8John McCall unsigned DiagID; 80531c286803c60c59d314525e047d0e72f9a1cb55bChris Lattner D.getMutableDeclSpec().SetTypeSpecType(DeclSpec::TST_int, 80631c286803c60c59d314525e047d0e72f9a1cb55bChris Lattner D.getIdentifierLoc(), 807fec54013fcd0eb72642741584ca04c1bc292bef8John McCall PrevSpec, DiagID); 808ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl D.SetRangeBegin(D.getDeclSpec().getSourceRange().getBegin()); 809a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner } 810a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 8115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If this declaration was formed with a K&R-style identifier list for the 8125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // arguments, parse declarations for all of the args next. 8135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // int foo(a,b) int a; float b; {} 814004659a56916f2f81ede507c12516c146d6c0df3Chris Lattner if (FTI.isKNRPrototype()) 8155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ParseKNRParamDeclarations(D); 8165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 8177ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor // We should have either an opening brace or, in a C++ constructor, 8187ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor // we may have a colon. 819758afbcc86ef15f8d433f5f87db1495e50effeb3Douglas Gregor if (Tok.isNot(tok::l_brace) && 820758afbcc86ef15f8d433f5f87db1495e50effeb3Douglas Gregor (!getLang().CPlusPlus || 821758afbcc86ef15f8d433f5f87db1495e50effeb3Douglas Gregor (Tok.isNot(tok::colon) && Tok.isNot(tok::kw_try)))) { 8225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(Tok, diag::err_expected_fn_body); 8235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 8245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Skip over garbage, until we get to '{'. Don't eat the '{'. 8255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SkipUntil(tok::l_brace, true, true); 826a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 8275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If we didn't find the '{', bail out. 828000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.isNot(tok::l_brace)) 829d226f65006733ed7f709c3174f22ce33391cb58fJohn McCall return 0; 8305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 831a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 8328387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet // In delayed template parsing mode, for function template we consume the 8338387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet // tokens and store them for late parsing at the end of the translation unit. 8348387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet if (getLang().DelayedTemplateParsing && 8358387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet TemplateInfo.Kind == ParsedTemplateInfo::Template) { 8368387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet MultiTemplateParamsArg TemplateParameterLists(Actions, 8378387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet TemplateInfo.TemplateParams->data(), 8388387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet TemplateInfo.TemplateParams->size()); 8398387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet 8408387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet ParseScope BodyScope(this, Scope::FnScope|Scope::DeclScope); 8418387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet Scope *ParentScope = getCurScope()->getParent(); 8428387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet 8438387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet Decl *DP = Actions.HandleDeclarator(ParentScope, D, 8448387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet move(TemplateParameterLists), 8458387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet /*IsFunctionDefinition=*/true); 8468387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet D.complete(DP); 8478387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet D.getMutableDeclSpec().abort(); 8488387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet 8498387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet if (DP) { 8508387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet LateParsedTemplatedFunction *LPT = new LateParsedTemplatedFunction(this, DP); 8518387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet 8528387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet FunctionDecl *FnD = 0; 8538387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet if (FunctionTemplateDecl *FunTmpl = dyn_cast<FunctionTemplateDecl>(DP)) 8548387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet FnD = FunTmpl->getTemplatedDecl(); 8558387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet else 8568387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet FnD = cast<FunctionDecl>(DP); 857d4a0caf78e7c18e7aca65fbfd799a6c024ff51fbFrancois Pichet Actions.CheckForFunctionRedefinition(FnD); 8588387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet 8598387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet LateParsedTemplateMap[FnD] = LPT; 8608387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet Actions.MarkAsLateParsedTemplate(FnD); 8618387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet LexTemplateFunctionForLateParsing(LPT->Toks); 8628387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet } else { 8638387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet CachedTokens Toks; 8648387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet LexTemplateFunctionForLateParsing(Toks); 8658387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet } 8668387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet return DP; 8678387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet } 8688387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet 8698387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet 870b652cea7d7b70ebe3744fb6d72c9ad9cf3c95429Chris Lattner // Enter a scope for the function body. 8718935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor ParseScope BodyScope(this, Scope::FnScope|Scope::DeclScope); 872a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 873b652cea7d7b70ebe3744fb6d72c9ad9cf3c95429Chris Lattner // Tell the actions module that we have entered a function definition with the 874b652cea7d7b70ebe3744fb6d72c9ad9cf3c95429Chris Lattner // specified Declarator for the function. 875d226f65006733ed7f709c3174f22ce33391cb58fJohn McCall Decl *Res = TemplateInfo.TemplateParams? 87623c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Actions.ActOnStartOfFunctionTemplateDef(getCurScope(), 877f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall MultiTemplateParamsArg(Actions, 87852591bf224b2c43e2b00e265bb8599a620081925Douglas Gregor TemplateInfo.TemplateParams->data(), 87952591bf224b2c43e2b00e265bb8599a620081925Douglas Gregor TemplateInfo.TemplateParams->size()), 88052591bf224b2c43e2b00e265bb8599a620081925Douglas Gregor D) 88123c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor : Actions.ActOnStartOfFunctionDef(getCurScope(), D); 882a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 88354abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall // Break out of the ParsingDeclarator context before we parse the body. 88454abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall D.complete(Res); 88554abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall 88654abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall // Break out of the ParsingDeclSpec context, too. This const_cast is 88754abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall // safe because we're always the sole owner. 88854abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall D.getMutableDeclSpec().abort(); 88954abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall 890d3a413d3b8eb39bcee5944bc545d9997c1abe492Sebastian Redl if (Tok.is(tok::kw_try)) 891c9977d09a2de7f7d2245973413d4caf86c736640Douglas Gregor return ParseFunctionTryBlock(Res, BodyScope); 892d3a413d3b8eb39bcee5944bc545d9997c1abe492Sebastian Redl 8937ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor // If we have a colon, then we're probably parsing a C++ 8947ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor // ctor-initializer. 895d6ca8da0f5a4115813055729faaa5128e994806dJohn McCall if (Tok.is(tok::colon)) { 8967ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor ParseConstructorInitializer(Res); 897d6ca8da0f5a4115813055729faaa5128e994806dJohn McCall 898d6ca8da0f5a4115813055729faaa5128e994806dJohn McCall // Recover from error. 899d6ca8da0f5a4115813055729faaa5128e994806dJohn McCall if (!Tok.is(tok::l_brace)) { 900c9977d09a2de7f7d2245973413d4caf86c736640Douglas Gregor BodyScope.Exit(); 9019ae2f076ca5ab1feb3ba95629099ec2319833701John McCall Actions.ActOnFinishFunctionBody(Res, 0); 902d6ca8da0f5a4115813055729faaa5128e994806dJohn McCall return Res; 903d6ca8da0f5a4115813055729faaa5128e994806dJohn McCall } 904d6ca8da0f5a4115813055729faaa5128e994806dJohn McCall } else 905393612e6c7727f1fee50039254d9f434364cc0b2Fariborz Jahanian Actions.ActOnDefaultCtorInitializers(Res); 9067ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor 907c9977d09a2de7f7d2245973413d4caf86c736640Douglas Gregor return ParseFunctionStatementBody(Res, BodyScope); 9085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 9095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 9105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseKNRParamDeclarations - Parse 'declaration-list[opt]' which provides 9115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// types for a function with a K&R-style identifier list for arguments. 9125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencervoid Parser::ParseKNRParamDeclarations(Declarator &D) { 9135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // We know that the top-level of this declarator is a function. 914075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo Bagnara DeclaratorChunk::FunctionTypeInfo &FTI = D.getFunctionTypeInfo(); 9155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 91604421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner // Enter function-declaration scope, limiting any declarators to the 91704421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner // function prototype scope, including parameter declarators. 9183218c4bb3b5d7250f12420de6db7ef3e3f805a75Douglas Gregor ParseScope PrototypeScope(this, Scope::FunctionPrototypeScope|Scope::DeclScope); 91904421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner 9205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Read all the argument declarations. 9215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer while (isDeclarationSpecifier()) { 9225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation DSStart = Tok.getLocation(); 923a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 9245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Parse the common declaration-specifiers piece. 9250b7e678a11ece4288dc01aebb5b17e5eef8f8d2dJohn McCall DeclSpec DS(AttrFactory); 9265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ParseDeclarationSpecifiers(DS); 927a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 9285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // C99 6.9.1p6: 'each declaration in the declaration list shall have at 9295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // least one declarator'. 9305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // NOTE: GCC just makes this an ext-warn. It's not clear what it does with 9315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // the declarations though. It's trivial to ignore them, really hard to do 9325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // anything else with them. 933000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.is(tok::semi)) { 9345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(DSStart, diag::err_declaration_does_not_declare_param); 9355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeToken(); 9365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer continue; 9375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 938a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 9395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // C99 6.9.1p6: Declarations shall contain no storage-class specifiers other 9405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // than register. 9415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (DS.getStorageClassSpec() != DeclSpec::SCS_unspecified && 9425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DS.getStorageClassSpec() != DeclSpec::SCS_register) { 9435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(DS.getStorageClassSpecLoc(), 9445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer diag::err_invalid_storage_class_in_func_decl); 9455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DS.ClearStorageClassSpecs(); 9465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 9475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (DS.isThreadSpecified()) { 9485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(DS.getThreadSpecLoc(), 9495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer diag::err_invalid_storage_class_in_func_decl); 9505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DS.ClearStorageClassSpecs(); 9515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 952a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 9535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Parse the first declarator attached to this declspec. 9545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Declarator ParmDeclarator(DS, Declarator::KNRTypeListContext); 9555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ParseDeclarator(ParmDeclarator); 9565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 9575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Handle the full declarator list. 9585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer while (1) { 9595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If attributes are present, parse them. 9607f040a9d817cd1c72b565e92abff473510bf9e1dJohn McCall MaybeParseGNUAttributes(ParmDeclarator); 961a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 9625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Ask the actions module to compute the type for this declarator. 963d226f65006733ed7f709c3174f22ce33391cb58fJohn McCall Decl *Param = 96423c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Actions.ActOnParamDeclarator(getCurScope(), ParmDeclarator); 9652bd42fadafddc8acf744b57a970bdc96a077c617Steve Naroff 966a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump if (Param && 9675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // A missing identifier has already been diagnosed. 9685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ParmDeclarator.getIdentifier()) { 9695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 9705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Scan the argument list looking for the correct param to apply this 9715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // type. 9725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer for (unsigned i = 0; ; ++i) { 9735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // C99 6.9.1p6: those declarators shall declare only identifiers from 9745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // the identifier list. 9755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (i == FTI.NumArgs) { 9761ab3b96de160e4fbffec2a776e284a48a3bb543dChris Lattner Diag(ParmDeclarator.getIdentifierLoc(), diag::err_no_matching_param) 9776898e33d0b28346a4dbe9a666e0e4188fea80460Chris Lattner << ParmDeclarator.getIdentifier(); 9785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 9795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 980a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 9815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (FTI.ArgInfo[i].Ident == ParmDeclarator.getIdentifier()) { 9825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Reject redefinitions of parameters. 98304421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner if (FTI.ArgInfo[i].Param) { 9845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(ParmDeclarator.getIdentifierLoc(), 9851ab3b96de160e4fbffec2a776e284a48a3bb543dChris Lattner diag::err_param_redefinition) 9866898e33d0b28346a4dbe9a666e0e4188fea80460Chris Lattner << ParmDeclarator.getIdentifier(); 9875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } else { 98804421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner FTI.ArgInfo[i].Param = Param; 9895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 9905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 9915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 9925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 9935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 9945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 9955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If we don't have a comma, it is either the end of the list (a ';') or 9965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // an error, bail out. 997000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.isNot(tok::comma)) 9985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 999a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 10005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Consume the comma. 10015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeToken(); 1002a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 10035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Parse the next declarator. 10045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ParmDeclarator.clear(); 10055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ParseDeclarator(ParmDeclarator); 10065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1007a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 1008000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.is(tok::semi)) { 10095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeToken(); 10105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } else { 10115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(Tok, diag::err_parse_error); 10125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Skip to end of block or statement 10135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SkipUntil(tok::semi, true); 1014000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.is(tok::semi)) 10155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeToken(); 10165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 10175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1018a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 10195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // The actions module must verify that all arguments were declared. 102023c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Actions.ActOnFinishKNRParamDeclarations(getCurScope(), D, Tok.getLocation()); 10215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 10225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 10235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 10245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseAsmStringLiteral - This is just a normal string-literal, but is not 10255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// allowed to be a wide string, and is not subject to character translation. 10265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 10275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [GNU] asm-string-literal: 10285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// string-literal 10295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 103060d7b3a319d84d688752be3870615ac0f111fb16John McCallParser::ExprResult Parser::ParseAsmStringLiteral() { 10315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (!isTokenStringLiteral()) { 10325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(Tok, diag::err_expected_string_literal); 103361364dddc33383e62cfe3b841dbc0f471280d95bSebastian Redl return ExprError(); 10345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1035a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 103660d7b3a319d84d688752be3870615ac0f111fb16John McCall ExprResult Res(ParseStringLiteralExpression()); 1037effa8d1c97b00a3f53e972b0e61d9aade5ea1c57Sebastian Redl if (Res.isInvalid()) return move(Res); 1038a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 10395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // TODO: Diagnose: wide string literal in 'asm' 1040a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 1041effa8d1c97b00a3f53e972b0e61d9aade5ea1c57Sebastian Redl return move(Res); 10425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 10435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 10445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseSimpleAsm 10455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 10465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [GNU] simple-asm-expr: 10475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 'asm' '(' asm-string-literal ')' 10485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 104960d7b3a319d84d688752be3870615ac0f111fb16John McCallParser::ExprResult Parser::ParseSimpleAsm(SourceLocation *EndLoc) { 1050000732226610650837478cba97843d19b75f648eChris Lattner assert(Tok.is(tok::kw_asm) && "Not an asm!"); 1051dfab6cb59a703f2ce4d58371652ce879f4c85a09Anders Carlsson SourceLocation Loc = ConsumeToken(); 1052a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 10537a6ae743b2ecfdfadadf7df53b569a9a3871a8fdJohn McCall if (Tok.is(tok::kw_volatile)) { 1054841d5e607f81bf5627e47d0c62ead29f28b5b0c2John McCall // Remove from the end of 'asm' to the end of 'volatile'. 1055841d5e607f81bf5627e47d0c62ead29f28b5b0c2John McCall SourceRange RemovalRange(PP.getLocForEndOfToken(Loc), 1056841d5e607f81bf5627e47d0c62ead29f28b5b0c2John McCall PP.getLocForEndOfToken(Tok.getLocation())); 1057841d5e607f81bf5627e47d0c62ead29f28b5b0c2John McCall 1058841d5e607f81bf5627e47d0c62ead29f28b5b0c2John McCall Diag(Tok, diag::warn_file_asm_volatile) 1059849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor << FixItHint::CreateRemoval(RemovalRange); 10607a6ae743b2ecfdfadadf7df53b569a9a3871a8fdJohn McCall ConsumeToken(); 10617a6ae743b2ecfdfadadf7df53b569a9a3871a8fdJohn McCall } 10627a6ae743b2ecfdfadadf7df53b569a9a3871a8fdJohn McCall 1063000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.isNot(tok::l_paren)) { 10641ab3b96de160e4fbffec2a776e284a48a3bb543dChris Lattner Diag(Tok, diag::err_expected_lparen_after) << "asm"; 106561364dddc33383e62cfe3b841dbc0f471280d95bSebastian Redl return ExprError(); 10665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1067a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 1068ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl Loc = ConsumeParen(); 1069a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 107060d7b3a319d84d688752be3870615ac0f111fb16John McCall ExprResult Result(ParseAsmStringLiteral()); 1071a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 1072ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl if (Result.isInvalid()) { 1073ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl SkipUntil(tok::r_paren, true, true); 1074ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl if (EndLoc) 1075ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl *EndLoc = Tok.getLocation(); 1076ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl ConsumeAnyToken(); 1077ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl } else { 1078ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl Loc = MatchRHSPunctuation(tok::r_paren, Loc); 1079ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl if (EndLoc) 1080ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl *EndLoc = Loc; 1081ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl } 1082a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 1083effa8d1c97b00a3f53e972b0e61d9aade5ea1c57Sebastian Redl return move(Result); 10845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 10855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1086eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// TryAnnotateTypeOrScopeToken - If the current token position is on a 1087eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// typename (possibly qualified in C++) or a C++ scope specifier not followed 1088eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// by a typename, TryAnnotateTypeOrScopeToken will replace one or more tokens 1089eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// with a single annotation token representing the typename or C++ scope 1090eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// respectively. 1091eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// This simplifies handling of C++ scope specifiers and allows efficient 1092eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// backtracking without the need to re-parse and resolve nested-names and 1093eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// typenames. 109444802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// It will mainly be called when we expect to treat identifiers as typenames 109544802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// (if they are typenames). For example, in C we do not expect identifiers 109644802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// inside expressions to be treated as typenames so it will not be called 109744802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// for expressions in C. 109844802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// The benefit for C/ObjC is that a typename will be annotated and 1099b43a50ff1b0b171ece84425b0ad83a9a31f038faSteve Naroff/// Actions.getTypeName will not be needed to be called again (e.g. getTypeName 110044802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// will not be called twice, once to check whether we have a declaration 110144802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// specifier, and another one to get the actual type inside 110244802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// ParseDeclarationSpecifiers). 1103a7bc7c880f86bc180684ef032d06df51bcae7a23Chris Lattner/// 11049ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall/// This returns true if an error occurred. 11051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// 110655a7cefc846765ac7d142a63f773747a20518d71Chris Lattner/// Note that this routine emits an error if you call it with ::new or ::delete 110755a7cefc846765ac7d142a63f773747a20518d71Chris Lattner/// as the current tokens, so only call it in contexts where these are invalid. 1108495c35d291da48c4f5655bbb54d15128ddde0d4dDouglas Gregorbool Parser::TryAnnotateTypeOrScopeToken(bool EnteringContext) { 11091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert((Tok.is(tok::identifier) || Tok.is(tok::coloncolon) 1110ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall || Tok.is(tok::kw_typename) || Tok.is(tok::annot_cxxscope)) && 11117452c6fc567ea1799f617395d0fa4c7ed075e5d9Chris Lattner "Cannot be a type or scope token!"); 11121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1113d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor if (Tok.is(tok::kw_typename)) { 1114d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor // Parse a C++ typename-specifier, e.g., "typename T::type". 1115d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor // 1116d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor // typename-specifier: 1117d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor // 'typename' '::' [opt] nested-name-specifier identifier 11181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // 'typename' '::' [opt] nested-name-specifier template [opt] 11191734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor // simple-template-id 1120d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor SourceLocation TypenameLoc = ConsumeToken(); 1121d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor CXXScopeSpec SS; 11224147d307086cf024a40a080e2bf379e9725f6f41Francois Pichet if (ParseOptionalCXXScopeSpecifier(SS, /*ObjectType=*/ParsedType(), false, 11234147d307086cf024a40a080e2bf379e9725f6f41Francois Pichet 0, /*IsTypename*/true)) 11249ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return true; 11259ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall if (!SS.isSet()) { 1126a5d318ad4ad3a110b3abb34f765e69b76f7c0bcdFrancois Pichet if (getLang().Microsoft) 1127a5d318ad4ad3a110b3abb34f765e69b76f7c0bcdFrancois Pichet Diag(Tok.getLocation(), diag::warn_expected_qualified_after_typename); 1128a5d318ad4ad3a110b3abb34f765e69b76f7c0bcdFrancois Pichet else 1129a5d318ad4ad3a110b3abb34f765e69b76f7c0bcdFrancois Pichet Diag(Tok.getLocation(), diag::err_expected_qualified_after_typename); 11309ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return true; 1131d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor } 1132d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor 1133d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor TypeResult Ty; 1134d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor if (Tok.is(tok::identifier)) { 1135d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor // FIXME: check whether the next token is '<', first! 113623c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Ty = Actions.ActOnTypenameType(getCurScope(), TypenameLoc, SS, 11371a15dae8be2b28e02b6639aa92b832465c5be420Douglas Gregor *Tok.getIdentifierInfo(), 1138d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor Tok.getLocation()); 11391734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor } else if (Tok.is(tok::annot_template_id)) { 11401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump TemplateIdAnnotation *TemplateId 11411734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor = static_cast<TemplateIdAnnotation *>(Tok.getAnnotationValue()); 11421734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor if (TemplateId->Kind == TNK_Function_template) { 11431734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor Diag(Tok, diag::err_typename_refers_to_non_type_template) 11441734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor << Tok.getAnnotationRange(); 11459ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return true; 11461734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor } 1147d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor 1148a02411e4d58b1730bea2a990822858ecc31e8eb1Douglas Gregor ASTTemplateArgsPtr TemplateArgsPtr(Actions, 1149a02411e4d58b1730bea2a990822858ecc31e8eb1Douglas Gregor TemplateId->getTemplateArgs(), 1150a02411e4d58b1730bea2a990822858ecc31e8eb1Douglas Gregor TemplateId->NumArgs); 1151a02411e4d58b1730bea2a990822858ecc31e8eb1Douglas Gregor 1152a02411e4d58b1730bea2a990822858ecc31e8eb1Douglas Gregor Ty = Actions.ActOnTypenameType(getCurScope(), TypenameLoc, SS, 1153a02411e4d58b1730bea2a990822858ecc31e8eb1Douglas Gregor /*FIXME:*/SourceLocation(), 1154a02411e4d58b1730bea2a990822858ecc31e8eb1Douglas Gregor TemplateId->Template, 1155a02411e4d58b1730bea2a990822858ecc31e8eb1Douglas Gregor TemplateId->TemplateNameLoc, 1156a02411e4d58b1730bea2a990822858ecc31e8eb1Douglas Gregor TemplateId->LAngleLoc, 1157a02411e4d58b1730bea2a990822858ecc31e8eb1Douglas Gregor TemplateArgsPtr, 1158a02411e4d58b1730bea2a990822858ecc31e8eb1Douglas Gregor TemplateId->RAngleLoc); 1159aa2187de137e5b809dcbbe14f3b61ae907a3d8aaDouglas Gregor TemplateId->Destroy(); 11601734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor } else { 11611734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor Diag(Tok, diag::err_expected_type_name_after_typename) 11621734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor << SS.getRange(); 11639ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return true; 11641734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor } 11651734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor 116639d67117f896c6e2faa727671ef64b3c04b0e3feSebastian Redl SourceLocation EndLoc = Tok.getLastLoc(); 11671734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor Tok.setKind(tok::annot_typename); 1168b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall setTypeAnnotation(Tok, Ty.isInvalid() ? ParsedType() : Ty.get()); 116939d67117f896c6e2faa727671ef64b3c04b0e3feSebastian Redl Tok.setAnnotationEndLoc(EndLoc); 11701734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor Tok.setLocation(TypenameLoc); 11711734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor PP.AnnotateCachedTokens(Tok); 11729ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return false; 1173d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor } 1174d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor 1175ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall // Remembers whether the token was originally a scope annotation. 1176ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall bool wasScopeAnnotation = Tok.is(tok::annot_cxxscope); 1177ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall 1178eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis CXXScopeSpec SS; 11794bdd91c09fd59e0c154d759288beff300e31e1d0Argyrios Kyrtzidis if (getLang().CPlusPlus) 1180b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall if (ParseOptionalCXXScopeSpecifier(SS, ParsedType(), EnteringContext)) 11819ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return true; 1182eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis 1183eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis if (Tok.is(tok::identifier)) { 1184608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner // Determine whether the identifier is a type name. 1185b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall if (ParsedType Ty = Actions.getTypeName(*Tok.getIdentifierInfo(), 1186b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall Tok.getLocation(), getCurScope(), 11871e52dfc648ce0b25ef57ae29ef1b4337d80011efFariborz Jahanian &SS, false, 11889e876876afc13aa671cc11a17c19907c599b9ab9Douglas Gregor NextToken().is(tok::period), 11899e876876afc13aa671cc11a17c19907c599b9ab9Douglas Gregor ParsedType(), 11909e876876afc13aa671cc11a17c19907c599b9ab9Douglas Gregor /*NonTrivialTypeSourceInfo*/true)) { 1191608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner // This is a typename. Replace the current token in-place with an 1192608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner // annotation type token. 1193b31757b68afe06ba442a05775d08fe7aa0f6f889Chris Lattner Tok.setKind(tok::annot_typename); 1194b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall setTypeAnnotation(Tok, Ty); 1195608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner Tok.setAnnotationEndLoc(Tok.getLocation()); 1196608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner if (SS.isNotEmpty()) // it was a C++ qualified type name. 1197608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner Tok.setLocation(SS.getBeginLoc()); 11981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1199608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner // In case the tokens were cached, have Preprocessor replace 1200608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner // them with the annotation token. 1201608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner PP.AnnotateCachedTokens(Tok); 12029ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return false; 12031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 120439a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor 120539a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor if (!getLang().CPlusPlus) { 1206608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner // If we're in C, we can't have :: tokens at all (the lexer won't return 1207608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner // them). If the identifier is not a type, then it can't be scope either, 12081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // just early exit. 1209608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner return false; 1210eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis } 12111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 121239a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // If this is a template-id, annotate with a template-id or type token. 121355f6b14230c94272efbbcdd89a92224c8db9f225Douglas Gregor if (NextToken().is(tok::less)) { 12147532dc66648cfe7432c9fe66dec5225f0ab301c6Douglas Gregor TemplateTy Template; 1215014e88d94ff83e3aad4e33b16413a2d1817ec208Douglas Gregor UnqualifiedId TemplateName; 1216014e88d94ff83e3aad4e33b16413a2d1817ec208Douglas Gregor TemplateName.setIdentifier(Tok.getIdentifierInfo(), Tok.getLocation()); 12171fd6d44d7ca97631497551bbf98866263143d706Douglas Gregor bool MemberOfUnknownSpecialization; 12181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (TemplateNameKind TNK 12197c15353ccaed24f2df932571166bf305c1b98b6dAbramo Bagnara = Actions.isTemplateName(getCurScope(), SS, 12207c15353ccaed24f2df932571166bf305c1b98b6dAbramo Bagnara /*hasTemplateKeyword=*/false, TemplateName, 1221b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall /*ObjectType=*/ ParsedType(), 1222b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall EnteringContext, 12237c15353ccaed24f2df932571166bf305c1b98b6dAbramo Bagnara Template, MemberOfUnknownSpecialization)) { 1224ca1bdd7c269a2390d43c040a60511edd017ee130Douglas Gregor // Consume the identifier. 1225ca1bdd7c269a2390d43c040a60511edd017ee130Douglas Gregor ConsumeToken(); 1226059101f922de6eb765601459925f4c8914420b23Douglas Gregor if (AnnotateTemplateIdToken(Template, TNK, SS, TemplateName)) { 1227c8e27cc402043ec86c1698c09e4ee9e415b16207Chris Lattner // If an unrecoverable error occurred, we need to return true here, 1228c8e27cc402043ec86c1698c09e4ee9e415b16207Chris Lattner // because the token stream is in a damaged state. We may not return 1229c8e27cc402043ec86c1698c09e4ee9e415b16207Chris Lattner // a valid identifier. 12309ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return true; 1231c8e27cc402043ec86c1698c09e4ee9e415b16207Chris Lattner } 1232ca1bdd7c269a2390d43c040a60511edd017ee130Douglas Gregor } 123355f6b14230c94272efbbcdd89a92224c8db9f225Douglas Gregor } 1234d6fb7ef028d9aa0b3e8943b7bc049c524437b407Douglas Gregor 123539a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // The current token, which is either an identifier or a 123639a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // template-id, is not part of the annotation. Fall through to 123739a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // push that token back into the stream and complete the C++ scope 123839a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // specifier annotation. 12391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 1240eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis 124139a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor if (Tok.is(tok::annot_template_id)) { 12421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump TemplateIdAnnotation *TemplateId 124339a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor = static_cast<TemplateIdAnnotation *>(Tok.getAnnotationValue()); 1244c45c232440dfafedca1a3773b904fb42609b1b19Douglas Gregor if (TemplateId->Kind == TNK_Type_template) { 124539a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // A template-id that refers to a type was parsed into a 124639a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // template-id annotation in a context where we weren't allowed 124739a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // to produce a type annotation token. Update the template-id 124839a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // annotation token to a type annotation token now. 1249059101f922de6eb765601459925f4c8914420b23Douglas Gregor AnnotateTemplateIdTokenAsType(); 12509ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return false; 125139a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor } 125239a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor } 1253d6fb7ef028d9aa0b3e8943b7bc049c524437b407Douglas Gregor 12546ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner if (SS.isEmpty()) 12559ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return false; 12561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12576ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner // A C++ scope specifier that isn't followed by a typename. 12586ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner // Push the current token back into the token stream (or revert it if it is 12596ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner // cached) and use an annotation scope token for current token. 12606ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner if (PP.isBacktrackEnabled()) 12616ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner PP.RevertCachedTokens(1); 12626ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner else 12636ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner PP.EnterToken(Tok); 12646ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner Tok.setKind(tok::annot_cxxscope); 1265c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor Tok.setAnnotationValue(Actions.SaveNestedNameSpecifierAnnotation(SS)); 12666ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner Tok.setAnnotationRange(SS.getRange()); 12676ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner 1268ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall // In case the tokens were cached, have Preprocessor replace them 1269ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall // with the annotation token. We don't need to do this if we've 1270ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall // just reverted back to the state we were in before being called. 1271ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall if (!wasScopeAnnotation) 1272ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall PP.AnnotateCachedTokens(Tok); 12739ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return false; 1274eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis} 1275eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis 1276eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// TryAnnotateScopeToken - Like TryAnnotateTypeOrScopeToken but only 127739a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor/// annotates C++ scope specifiers and template-ids. This returns 1278c8e27cc402043ec86c1698c09e4ee9e415b16207Chris Lattner/// true if the token was annotated or there was an error that could not be 1279c8e27cc402043ec86c1698c09e4ee9e415b16207Chris Lattner/// recovered from. 12801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// 128155a7cefc846765ac7d142a63f773747a20518d71Chris Lattner/// Note that this routine emits an error if you call it with ::new or ::delete 128255a7cefc846765ac7d142a63f773747a20518d71Chris Lattner/// as the current tokens, so only call it in contexts where these are invalid. 1283495c35d291da48c4f5655bbb54d15128ddde0d4dDouglas Gregorbool Parser::TryAnnotateCXXScopeToken(bool EnteringContext) { 12844bdd91c09fd59e0c154d759288beff300e31e1d0Argyrios Kyrtzidis assert(getLang().CPlusPlus && 12856ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner "Call sites of this function should be guarded by checking for C++"); 12863b887354b1b667c97d070ddc67b5354353c4c07bDouglas Gregor assert((Tok.is(tok::identifier) || Tok.is(tok::coloncolon) || 12873b887354b1b667c97d070ddc67b5354353c4c07bDouglas Gregor (Tok.is(tok::annot_template_id) && NextToken().is(tok::coloncolon)))&& 12887452c6fc567ea1799f617395d0fa4c7ed075e5d9Chris Lattner "Cannot be a type or scope token!"); 1289eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis 12904bdd91c09fd59e0c154d759288beff300e31e1d0Argyrios Kyrtzidis CXXScopeSpec SS; 1291b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall if (ParseOptionalCXXScopeSpecifier(SS, ParsedType(), EnteringContext)) 12929ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return true; 1293edc287751a4b05e3b4d8ff2b38fa30c5b59a548bJeffrey Yasskin if (SS.isEmpty()) 12949ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return false; 1295eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis 12966ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner // Push the current token back into the token stream (or revert it if it is 12976ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner // cached) and use an annotation scope token for current token. 12986ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner if (PP.isBacktrackEnabled()) 12996ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner PP.RevertCachedTokens(1); 13006ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner else 13016ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner PP.EnterToken(Tok); 13026ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner Tok.setKind(tok::annot_cxxscope); 1303c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor Tok.setAnnotationValue(Actions.SaveNestedNameSpecifierAnnotation(SS)); 13046ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner Tok.setAnnotationRange(SS.getRange()); 13056ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner 13066ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner // In case the tokens were cached, have Preprocessor replace them with the 13076ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner // annotation token. 13086ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner PP.AnnotateCachedTokens(Tok); 13099ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return false; 1310eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis} 13116c94a6d77f456f23ecd4c2061e6413786b5e6571John McCall 1312a6eb5f81d13bacac01faff70a947047725b4413fArgyrios Kyrtzidisbool Parser::isTokenEqualOrMistypedEqualEqual(unsigned DiagID) { 1313a6eb5f81d13bacac01faff70a947047725b4413fArgyrios Kyrtzidis if (Tok.is(tok::equalequal)) { 1314a6eb5f81d13bacac01faff70a947047725b4413fArgyrios Kyrtzidis // We have '==' in a context that we would expect a '='. 1315a6eb5f81d13bacac01faff70a947047725b4413fArgyrios Kyrtzidis // The user probably made a typo, intending to type '='. Emit diagnostic, 1316a6eb5f81d13bacac01faff70a947047725b4413fArgyrios Kyrtzidis // fixit hint to turn '==' -> '=' and continue as if the user typed '='. 1317a6eb5f81d13bacac01faff70a947047725b4413fArgyrios Kyrtzidis Diag(Tok, DiagID) 1318a6eb5f81d13bacac01faff70a947047725b4413fArgyrios Kyrtzidis << FixItHint::CreateReplacement(SourceRange(Tok.getLocation()), 1319a6eb5f81d13bacac01faff70a947047725b4413fArgyrios Kyrtzidis getTokenSimpleSpelling(tok::equal)); 1320a6eb5f81d13bacac01faff70a947047725b4413fArgyrios Kyrtzidis return true; 1321a6eb5f81d13bacac01faff70a947047725b4413fArgyrios Kyrtzidis } 1322a6eb5f81d13bacac01faff70a947047725b4413fArgyrios Kyrtzidis 1323a6eb5f81d13bacac01faff70a947047725b4413fArgyrios Kyrtzidis return Tok.is(tok::equal); 1324a6eb5f81d13bacac01faff70a947047725b4413fArgyrios Kyrtzidis} 1325a6eb5f81d13bacac01faff70a947047725b4413fArgyrios Kyrtzidis 1326dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregorvoid Parser::CodeCompletionRecovery() { 132723c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor for (Scope *S = getCurScope(); S; S = S->getParent()) { 1328dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor if (S->getFlags() & Scope::FnScope) { 1329f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall Actions.CodeCompleteOrdinaryName(getCurScope(), Sema::PCC_RecoveryInFunction); 1330dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor return; 1331dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor } 1332dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor 1333dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor if (S->getFlags() & Scope::ClassScope) { 1334f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall Actions.CodeCompleteOrdinaryName(getCurScope(), Sema::PCC_Class); 1335dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor return; 1336dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor } 1337dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor } 1338dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor 1339f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall Actions.CodeCompleteOrdinaryName(getCurScope(), Sema::PCC_Namespace); 1340dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor} 1341dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor 13426c94a6d77f456f23ecd4c2061e6413786b5e6571John McCall// Anchor the Parser::FieldCallback vtable to this translation unit. 13436c94a6d77f456f23ecd4c2061e6413786b5e6571John McCall// We use a spurious method instead of the destructor because 13446c94a6d77f456f23ecd4c2061e6413786b5e6571John McCall// destroying FieldCallbacks can actually be slightly 13456c94a6d77f456f23ecd4c2061e6413786b5e6571John McCall// performance-sensitive. 13466c94a6d77f456f23ecd4c2061e6413786b5e6571John McCallvoid Parser::FieldCallback::_anchor() { 13476c94a6d77f456f23ecd4c2061e6413786b5e6571John McCall} 1348f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor 1349f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor// Code-completion pass-through functions 1350f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor 1351f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregorvoid Parser::CodeCompleteDirective(bool InConditional) { 1352f29c5233085a5af795c3c01b94d319e5b3235d56Douglas Gregor Actions.CodeCompletePreprocessorDirective(InConditional); 1353f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor} 1354f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor 1355f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregorvoid Parser::CodeCompleteInConditionalExclusion() { 1356f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor Actions.CodeCompleteInPreprocessorConditionalExclusion(getCurScope()); 1357f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor} 13581fbb447e9d43c2c676e94081fbfee7eb6cbe933bDouglas Gregor 13591fbb447e9d43c2c676e94081fbfee7eb6cbe933bDouglas Gregorvoid Parser::CodeCompleteMacroName(bool IsDefinition) { 1360f29c5233085a5af795c3c01b94d319e5b3235d56Douglas Gregor Actions.CodeCompletePreprocessorMacroName(IsDefinition); 1361f29c5233085a5af795c3c01b94d319e5b3235d56Douglas Gregor} 1362f29c5233085a5af795c3c01b94d319e5b3235d56Douglas Gregor 1363f29c5233085a5af795c3c01b94d319e5b3235d56Douglas Gregorvoid Parser::CodeCompletePreprocessorExpression() { 1364f29c5233085a5af795c3c01b94d319e5b3235d56Douglas Gregor Actions.CodeCompletePreprocessorExpression(); 1365f29c5233085a5af795c3c01b94d319e5b3235d56Douglas Gregor} 1366f29c5233085a5af795c3c01b94d319e5b3235d56Douglas Gregor 1367f29c5233085a5af795c3c01b94d319e5b3235d56Douglas Gregorvoid Parser::CodeCompleteMacroArgument(IdentifierInfo *Macro, 1368f29c5233085a5af795c3c01b94d319e5b3235d56Douglas Gregor MacroInfo *MacroInfo, 1369f29c5233085a5af795c3c01b94d319e5b3235d56Douglas Gregor unsigned ArgumentIndex) { 1370f29c5233085a5af795c3c01b94d319e5b3235d56Douglas Gregor Actions.CodeCompletePreprocessorMacroArgument(getCurScope(), Macro, MacroInfo, 1371f29c5233085a5af795c3c01b94d319e5b3235d56Douglas Gregor ArgumentIndex); 13721fbb447e9d43c2c676e94081fbfee7eb6cbe933bDouglas Gregor} 137355817afdf9d453a443262a733f6caf6692dca118Douglas Gregor 137455817afdf9d453a443262a733f6caf6692dca118Douglas Gregorvoid Parser::CodeCompleteNaturalLanguage() { 137555817afdf9d453a443262a733f6caf6692dca118Douglas Gregor Actions.CodeCompleteNaturalLanguage(); 137655817afdf9d453a443262a733f6caf6692dca118Douglas Gregor} 1377