Parser.cpp revision 837b1a37116cf4e64f8bb7db34982dee1fba7647
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" 225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerusing namespace clang; 235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 24f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCallParser::Parser(Preprocessor &pp, Sema &actions) 251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump : CrashInfo(*this), PP(pp), Actions(actions), Diags(PP.getDiagnostics()), 2608d92ecf6e5b1fd23177a08c2312b58d63d863dbChris Lattner GreaterThanIsOperator(true), ColonIsSacred(false), 2708d92ecf6e5b1fd23177a08c2312b58d63d863dbChris Lattner TemplateParameterDepth(0) { 285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Tok.setKind(tok::eof); 2923c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Actions.CurScope = 0; 309e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner NumCachedScopes = 0; 315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ParenCount = BracketCount = BraceCount = 0; 32d226f65006733ed7f709c3174f22ce33391cb58fJohn McCall ObjCImpDecl = 0; 33fcdd8fe26de3eee44927600bf1853e21bd90dd84Daniel Dunbar 34fcdd8fe26de3eee44927600bf1853e21bd90dd84Daniel Dunbar // Add #pragma handlers. These are removed and destroyed in the 35fcdd8fe26de3eee44927600bf1853e21bd90dd84Daniel Dunbar // destructor. 36cbb98edd530787c2ac019e437e7c599df8004ba7Daniel Dunbar AlignHandler.reset(new PragmaAlignHandler(actions)); 37cbb98edd530787c2ac019e437e7c599df8004ba7Daniel Dunbar PP.AddPragmaHandler(AlignHandler.get()); 38cbb98edd530787c2ac019e437e7c599df8004ba7Daniel Dunbar 39aa8b0d19244a6e7e8e5798fcc6aef003c274d3e0Eli Friedman GCCVisibilityHandler.reset(new PragmaGCCVisibilityHandler(actions)); 40aa8b0d19244a6e7e8e5798fcc6aef003c274d3e0Eli Friedman PP.AddPragmaHandler("GCC", GCCVisibilityHandler.get()); 41aa8b0d19244a6e7e8e5798fcc6aef003c274d3e0Eli Friedman 429b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis OptionsHandler.reset(new PragmaOptionsHandler(actions)); 439b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PP.AddPragmaHandler(OptionsHandler.get()); 449b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis 459b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PackHandler.reset(new PragmaPackHandler(actions)); 469b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PP.AddPragmaHandler(PackHandler.get()); 479b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis 489b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis UnusedHandler.reset(new PragmaUnusedHandler(actions, *this)); 499b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PP.AddPragmaHandler(UnusedHandler.get()); 509b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis 519b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis WeakHandler.reset(new PragmaWeakHandler(actions)); 529b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PP.AddPragmaHandler(WeakHandler.get()); 53f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor 54f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor PP.setCodeCompletionHandler(*this); 555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 570102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner/// If a crash happens while the parser is active, print out a line indicating 580102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner/// what the current token is. 590102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattnervoid PrettyStackTraceParserEntry::print(llvm::raw_ostream &OS) const { 600102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner const Token &Tok = P.getCurToken(); 61ddcbc0a72a04a5ae2493088f1437200a9ea480b1Chris Lattner if (Tok.is(tok::eof)) { 620102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner OS << "<eof> parser at end of file\n"; 630102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner return; 640102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner } 651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 66ddcbc0a72a04a5ae2493088f1437200a9ea480b1Chris Lattner if (Tok.getLocation().isInvalid()) { 67ddcbc0a72a04a5ae2493088f1437200a9ea480b1Chris Lattner OS << "<unknown> parser at unknown location\n"; 68ddcbc0a72a04a5ae2493088f1437200a9ea480b1Chris Lattner return; 69ddcbc0a72a04a5ae2493088f1437200a9ea480b1Chris Lattner } 701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 710102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner const Preprocessor &PP = P.getPreprocessor(); 720102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner Tok.getLocation().print(OS, PP.getSourceManager()); 739fa31dd71e0414e2ca905380e2f8d42710b22c82Daniel Dunbar if (Tok.isAnnotation()) 749fa31dd71e0414e2ca905380e2f8d42710b22c82Daniel Dunbar OS << ": at annotation token \n"; 759fa31dd71e0414e2ca905380e2f8d42710b22c82Daniel Dunbar else 769fa31dd71e0414e2ca905380e2f8d42710b22c82Daniel Dunbar OS << ": current parser token '" << PP.getSpelling(Tok) << "'\n"; 77f780abc21c39cd4731b9e38f2d2d9f7d1510bd7bDouglas Gregor} 785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 790102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner 803cbfe2c4159e0a219ae660d50625c013aa4afbd0Chris LattnerDiagnosticBuilder Parser::Diag(SourceLocation Loc, unsigned DiagID) { 810102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner return Diags.Report(FullSourceLoc(Loc, PP.getSourceManager()), DiagID); 821ab3b96de160e4fbffec2a776e284a48a3bb543dChris Lattner} 831ab3b96de160e4fbffec2a776e284a48a3bb543dChris Lattner 843cbfe2c4159e0a219ae660d50625c013aa4afbd0Chris LattnerDiagnosticBuilder Parser::Diag(const Token &Tok, unsigned DiagID) { 851ab3b96de160e4fbffec2a776e284a48a3bb543dChris Lattner return Diag(Tok.getLocation(), DiagID); 865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 884b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor/// \brief Emits a diagnostic suggesting parentheses surrounding a 894b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor/// given range. 904b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor/// 914b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor/// \param Loc The location where we'll emit the diagnostic. 924b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor/// \param Loc The kind of diagnostic to emit. 934b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor/// \param ParenRange Source range enclosing code that should be parenthesized. 944b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregorvoid Parser::SuggestParentheses(SourceLocation Loc, unsigned DK, 954b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor SourceRange ParenRange) { 96b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor SourceLocation EndLoc = PP.getLocForEndOfToken(ParenRange.getEnd()); 97b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor if (!ParenRange.getEnd().isFileID() || EndLoc.isInvalid()) { 984b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor // We can't display the parentheses, so just dig the 994b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor // warning/error and return. 1004b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor Diag(Loc, DK); 1014b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor return; 1024b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor } 1031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Diag(Loc, DK) 105849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor << FixItHint::CreateInsertion(ParenRange.getBegin(), "(") 106849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor << FixItHint::CreateInsertion(EndLoc, ")"); 1074b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor} 1084b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor 1095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// MatchRHSPunctuation - For punctuation with a LHS and RHS (e.g. '['/']'), 1105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// this helper function matches and consumes the specified RHS token if 1115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// present. If not present, it emits the specified diagnostic indicating 1125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// that the parser failed to match the RHS of the token at LHSLoc. LHSName 1135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// should be the name of the unmatched LHS token. 1145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid SpencerSourceLocation Parser::MatchRHSPunctuation(tok::TokenKind RHSTok, 1155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation LHSLoc) { 116a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 117000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.is(RHSTok)) 1185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return ConsumeAnyToken(); 119a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 1205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation R = Tok.getLocation(); 1215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const char *LHSName = "unknown"; 1225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer diag::kind DID = diag::err_parse_error; 1235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (RHSTok) { 1245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer default: break; 1255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::r_paren : LHSName = "("; DID = diag::err_expected_rparen; break; 1265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::r_brace : LHSName = "{"; DID = diag::err_expected_rbrace; break; 1275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::r_square: LHSName = "["; DID = diag::err_expected_rsquare; break; 1285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::greater: LHSName = "<"; DID = diag::err_expected_greater; break; 1295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(Tok, DID); 13128eb7e992b9a266abb300da25b6d3c1557cec361Chris Lattner Diag(LHSLoc, diag::note_matching) << LHSName; 1329fc1873a3da0af8ef91e4f1927f3540f9af2038fChris Lattner SkipUntil(RHSTok); 1335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return R; 1345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 1355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 136837b1a37116cf4e64f8bb7db34982dee1fba7647John McCallstatic bool IsCommonTypo(tok::TokenKind ExpectedTok, const Token &Tok) { 137837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall switch (ExpectedTok) { 138837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall case tok::semi: return Tok.is(tok::colon); // : for ; 139837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall default: return false; 140837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall } 141837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall} 142837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall 1435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ExpectAndConsume - The parser expects that 'ExpectedTok' is next in the 1445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// input. If so, it is consumed and false is returned. 1455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 1465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// If the input is malformed, this emits the specified diagnostic. Next, if 1475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// SkipToTok is specified, it calls SkipUntil(SkipToTok). Finally, true is 1485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// returned. 1495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerbool Parser::ExpectAndConsume(tok::TokenKind ExpectedTok, unsigned DiagID, 1505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const char *Msg, tok::TokenKind SkipToTok) { 151dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor if (Tok.is(ExpectedTok) || Tok.is(tok::code_completion)) { 1525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeAnyToken(); 1535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 1545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 155a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 156837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall // Detect common single-character typos and resume. 157837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall if (IsCommonTypo(ExpectedTok, Tok)) { 158837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall SourceLocation Loc = Tok.getLocation(); 159837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall Diag(Loc, DiagID) 160837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall << Msg 161837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall << FixItHint::CreateReplacement(SourceRange(Loc), 162837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall getTokenSimpleSpelling(ExpectedTok)); 163837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall ConsumeAnyToken(); 164837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall 165837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall // Pretend there wasn't a problem. 166837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall return false; 167837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall } 168837b1a37116cf4e64f8bb7db34982dee1fba7647John McCall 1694b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor const char *Spelling = 0; 170b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor SourceLocation EndLoc = PP.getLocForEndOfToken(PrevTokLocation); 1711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (EndLoc.isValid() && 172b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor (Spelling = tok::getTokenSimpleSpelling(ExpectedTok))) { 1734b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor // Show what code to insert to fix this problem. 1741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Diag(EndLoc, DiagID) 1754b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor << Msg 176849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor << FixItHint::CreateInsertion(EndLoc, Spelling); 1774b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor } else 1784b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor Diag(Tok, DiagID) << Msg; 1794b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor 1805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (SkipToTok != tok::unknown) 1815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SkipUntil(SkipToTok); 1825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return true; 1835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 1845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1859ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregorbool Parser::ExpectAndConsumeSemi(unsigned DiagID) { 1869ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor if (Tok.is(tok::semi) || Tok.is(tok::code_completion)) { 1879ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor ConsumeAnyToken(); 1889ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor return false; 1899ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor } 1909ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor 1919ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor if ((Tok.is(tok::r_paren) || Tok.is(tok::r_square)) && 1929ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor NextToken().is(tok::semi)) { 1939ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor Diag(Tok, diag::err_extraneous_token_before_semi) 1949ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor << PP.getSpelling(Tok) 1959ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor << FixItHint::CreateRemoval(Tok.getLocation()); 1969ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor ConsumeAnyToken(); // The ')' or ']'. 1979ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor ConsumeToken(); // The ';'. 1989ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor return false; 1999ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor } 2009ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor 2019ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor return ExpectAndConsume(tok::semi, DiagID); 2029ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor} 2039ba23b4ceacd77cd264501690a7a9e94184ef71bDouglas Gregor 2045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 2055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// Error recovery. 2065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 2075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// SkipUntil - Read tokens until we get to the specified token, then consume 209012cf464254804279efa84e21b4b493dde76c5f1Chris Lattner/// it (unless DontConsume is true). Because we cannot guarantee that the 2105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// token will ever occur, this skips to the next token, or to some likely 2115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// good stopping point. If StopAtSemi is true, skipping will stop at a ';' 2125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// character. 213a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump/// 2145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// If SkipUntil finds the specified token, it returns true, otherwise it 215a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump/// returns false. 2165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerbool Parser::SkipUntil(const tok::TokenKind *Toks, unsigned NumToks, 2175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool StopAtSemi, bool DontConsume) { 2185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // We always want this function to skip at least one token if the first token 2195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // isn't T and if not at EOF. 2205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool isFirstTokenSkipped = true; 2215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer while (1) { 2225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If we found one of the tokens, stop and return true. 2235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer for (unsigned i = 0; i != NumToks; ++i) { 224000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.is(Toks[i])) { 2255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (DontConsume) { 2265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Noop, don't consume the token. 2275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } else { 2285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeAnyToken(); 2295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return true; 2315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 233a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 2345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (Tok.getKind()) { 2355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::eof: 2365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Ran out of tokens. 2375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 238dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor 239dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor case tok::code_completion: 240dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor ConsumeToken(); 241dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor return false; 242dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor 2435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::l_paren: 2445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Recursively skip properly-nested parens. 2455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeParen(); 2465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SkipUntil(tok::r_paren, false); 2475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 2485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::l_square: 2495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Recursively skip properly-nested square brackets. 2505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeBracket(); 2515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SkipUntil(tok::r_square, false); 2525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 2535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::l_brace: 2545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Recursively skip properly-nested braces. 2555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeBrace(); 2565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SkipUntil(tok::r_brace, false); 2575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 258a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 2595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Okay, we found a ']' or '}' or ')', which we think should be balanced. 2605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Since the user wasn't looking for this token (if they were, it would 2615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // already be handled), this isn't balanced. If there is a LHS token at a 2625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // higher level, we will assume that this matches the unbalanced token 2635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // and return it. Otherwise, this is a spurious RHS token, which we skip. 2645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::r_paren: 2655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (ParenCount && !isFirstTokenSkipped) 2665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; // Matches something. 2675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeParen(); 2685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 2695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::r_square: 2705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (BracketCount && !isFirstTokenSkipped) 2715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; // Matches something. 2725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeBracket(); 2735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 2745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::r_brace: 2755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (BraceCount && !isFirstTokenSkipped) 2765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; // Matches something. 2775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeBrace(); 2785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 279a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 2805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::string_literal: 2815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::wide_string_literal: 2825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeStringToken(); 2835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 2845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::semi: 2855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (StopAtSemi) 2865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 2875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // FALL THROUGH. 2885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer default: 2895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Skip this token. 2905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeToken(); 2915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 2925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer isFirstTokenSkipped = false; 294a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump } 2955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 2965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 2985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// Scope manipulation 2995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 3005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// EnterScope - Start a new scope. 3025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencervoid Parser::EnterScope(unsigned ScopeFlags) { 3039e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner if (NumCachedScopes) { 3049e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner Scope *N = ScopeCache[--NumCachedScopes]; 30523c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor N->Init(getCurScope(), ScopeFlags); 30623c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Actions.CurScope = N; 3075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } else { 30823c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Actions.CurScope = new Scope(getCurScope(), ScopeFlags); 3095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 31023c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor getCurScope()->setNumErrorsAtStart(Diags.getNumErrors()); 3115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 3125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ExitScope - Pop a scope off the scope stack. 3145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencervoid Parser::ExitScope() { 31523c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor assert(getCurScope() && "Scope imbalance!"); 3165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 31790ae68aae98f12fe1950c63e2f6bd0fabce6cb1eChris Lattner // Inform the actions module that this scope is going away if there are any 31890ae68aae98f12fe1950c63e2f6bd0fabce6cb1eChris Lattner // decls in it. 31923c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor if (!getCurScope()->decl_empty()) 32023c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Actions.ActOnPopScope(Tok.getLocation(), getCurScope()); 321a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 32223c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Scope *OldScope = getCurScope(); 32323c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Actions.CurScope = OldScope->getParent(); 324a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 3259e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner if (NumCachedScopes == ScopeCacheSize) 3269e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner delete OldScope; 3275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer else 3289e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner ScopeCache[NumCachedScopes++] = OldScope; 3295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 3305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 3355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// C99 6.9: External Definitions. 3365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 3375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid SpencerParser::~Parser() { 3395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If we still have scopes active, delete the scope tree. 34023c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor delete getCurScope(); 34123c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Actions.CurScope = 0; 34223c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor 3435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Free the scope cache. 3449e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner for (unsigned i = 0, e = NumCachedScopes; i != e; ++i) 3459e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner delete ScopeCache[i]; 346fcdd8fe26de3eee44927600bf1853e21bd90dd84Daniel Dunbar 347fcdd8fe26de3eee44927600bf1853e21bd90dd84Daniel Dunbar // Remove the pragma handlers we installed. 348cbb98edd530787c2ac019e437e7c599df8004ba7Daniel Dunbar PP.RemovePragmaHandler(AlignHandler.get()); 349cbb98edd530787c2ac019e437e7c599df8004ba7Daniel Dunbar AlignHandler.reset(); 350aa8b0d19244a6e7e8e5798fcc6aef003c274d3e0Eli Friedman PP.RemovePragmaHandler("GCC", GCCVisibilityHandler.get()); 351aa8b0d19244a6e7e8e5798fcc6aef003c274d3e0Eli Friedman GCCVisibilityHandler.reset(); 3529b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PP.RemovePragmaHandler(OptionsHandler.get()); 353861800c676004eabed5927f0552620d06c80a40aDaniel Dunbar OptionsHandler.reset(); 3549b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PP.RemovePragmaHandler(PackHandler.get()); 3554726d03ab3abce41911c31d1354a18f1258cae4dTed Kremenek PackHandler.reset(); 3569b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PP.RemovePragmaHandler(UnusedHandler.get()); 3574726d03ab3abce41911c31d1354a18f1258cae4dTed Kremenek UnusedHandler.reset(); 3589b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PP.RemovePragmaHandler(WeakHandler.get()); 3599991479ad5dde617168cc1e4b18425cdbbfd9fa9Eli Friedman WeakHandler.reset(); 360f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor PP.clearCodeCompletionHandler(); 3615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 3625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// Initialize - Warm up the parser. 3645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 3655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencervoid Parser::Initialize() { 36631e057270232c1c37602579cb6461c2704175672Chris Lattner // Create the translation unit scope. Install it as the current scope. 36723c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor assert(getCurScope() == 0 && "A scope is already active?"); 36831e057270232c1c37602579cb6461c2704175672Chris Lattner EnterScope(Scope::DeclScope); 369c1a3e5e73859ece9f106ae9d84c78bef4111956aDouglas Gregor Actions.ActOnTranslationUnitScope(getCurScope()); 370c1a3e5e73859ece9f106ae9d84c78bef4111956aDouglas Gregor 371c1a3e5e73859ece9f106ae9d84c78bef4111956aDouglas Gregor // Prime the lexer look-ahead. 372c1a3e5e73859ece9f106ae9d84c78bef4111956aDouglas Gregor ConsumeToken(); 373a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 374000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.is(tok::eof) && 375f72617544287acf0281c3b1a733bcb22a02e6ca4Chris Lattner !getLang().CPlusPlus) // Empty source file is an extension in C 3765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(Tok, diag::ext_empty_source_file); 377a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 37834870da70fa42b0391b79627ebd0cfc6eb22213bChris Lattner // Initialization for Objective-C context sensitive keywords recognition. 379a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek // Referenced in Parser::ParseObjCTypeQualifierList. 38034870da70fa42b0391b79627ebd0cfc6eb22213bChris Lattner if (getLang().ObjC1) { 381a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek ObjCTypeQuals[objc_in] = &PP.getIdentifierTable().get("in"); 382a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek ObjCTypeQuals[objc_out] = &PP.getIdentifierTable().get("out"); 383a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek ObjCTypeQuals[objc_inout] = &PP.getIdentifierTable().get("inout"); 384a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek ObjCTypeQuals[objc_oneway] = &PP.getIdentifierTable().get("oneway"); 385a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek ObjCTypeQuals[objc_bycopy] = &PP.getIdentifierTable().get("bycopy"); 386a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek ObjCTypeQuals[objc_byref] = &PP.getIdentifierTable().get("byref"); 38734870da70fa42b0391b79627ebd0cfc6eb22213bChris Lattner } 388662e8b5647adbb1bc9eeceece7b64600cfa87471Daniel Dunbar 389662e8b5647adbb1bc9eeceece7b64600cfa87471Daniel Dunbar Ident_super = &PP.getIdentifierTable().get("super"); 39082287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson 39182287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson if (getLang().AltiVec) { 39282287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson Ident_vector = &PP.getIdentifierTable().get("vector"); 39382287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson Ident_pixel = &PP.getIdentifierTable().get("pixel"); 39482287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson } 3955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 3965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseTopLevelDecl - Parse one top-level declaration, return whatever the 3985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// action tells us to. This returns true if the EOF was encountered. 399682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattnerbool Parser::ParseTopLevelDecl(DeclGroupPtrTy &Result) { 400682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner Result = DeclGroupPtrTy(); 4019299f3fa85796613cc787a2062c9562d07c8613eChris Lattner if (Tok.is(tok::eof)) { 4029299f3fa85796613cc787a2062c9562d07c8613eChris Lattner Actions.ActOnEndOfTranslationUnit(); 4039299f3fa85796613cc787a2062c9562d07c8613eChris Lattner return true; 4049299f3fa85796613cc787a2062c9562d07c8613eChris Lattner } 405a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 406bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt CXX0XAttributeList Attr; 407bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt if (getLang().CPlusPlus0x && isCXX0XAttributeSpecifier()) 408bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt Attr = ParseCXX0XAttributes(); 409bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt Result = ParseExternalDeclaration(Attr); 4105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 4115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 4125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 4135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseTranslationUnit: 4145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// translation-unit: [C99 6.9] 415a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump/// external-declaration 416a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump/// translation-unit external-declaration 4175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencervoid Parser::ParseTranslationUnit() { 4188935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor Initialize(); 419a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 420682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner DeclGroupPtrTy Res; 42189307ffaf8acf4d6fdffd72b607ca4fbcfdffc9dSteve Naroff while (!ParseTopLevelDecl(Res)) 4225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /*parse them all*/; 4231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 42406f548596beef4c0a227a45cba996497f99566c0Chris Lattner ExitScope(); 42523c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor assert(getCurScope() == 0 && "Scope imbalance!"); 4265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 4275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 4285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseExternalDeclaration: 42990b93d6f6961edd8f17e089253d655892adc1ef7Chris Lattner/// 430c19923dda3d28f67aab4726cd40bb07032758383Douglas Gregor/// external-declaration: [C99 6.9], declaration: [C++ dcl.dcl] 431c3018153a11afe91849748a93d920040a571b76cChris Lattner/// function-definition 432c3018153a11afe91849748a93d920040a571b76cChris Lattner/// declaration 433a1d71aea847a50b3acbd187d2ae9e5c1ead0f4e2Douglas Gregor/// [C++0x] empty-declaration 4345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [GNU] asm-definition 435c3018153a11afe91849748a93d920040a571b76cChris Lattner/// [GNU] __extension__ external-declaration 4365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [OBJC] objc-class-definition 4375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [OBJC] objc-class-declaration 4385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [OBJC] objc-alias-declaration 4395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [OBJC] objc-protocol-definition 4405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [OBJC] objc-method-definition 4415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [OBJC] @end 442c19923dda3d28f67aab4726cd40bb07032758383Douglas Gregor/// [C++] linkage-specification 4435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [GNU] asm-definition: 4445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// simple-asm-expr ';' 4455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 446a1d71aea847a50b3acbd187d2ae9e5c1ead0f4e2Douglas Gregor/// [C++0x] empty-declaration: 447a1d71aea847a50b3acbd187d2ae9e5c1ead0f4e2Douglas Gregor/// ';' 448a1d71aea847a50b3acbd187d2ae9e5c1ead0f4e2Douglas Gregor/// 44945f965581935791a018df829a14dff53c1dd8f47Douglas Gregor/// [C++0x/GNU] 'extern' 'template' declaration 45009a63c97b95eb4dc6fd6b2323929e8cf12af03ffDouglas GregorParser::DeclGroupPtrTy Parser::ParseExternalDeclaration(CXX0XAttributeList Attr, 45109a63c97b95eb4dc6fd6b2323929e8cf12af03ffDouglas Gregor ParsingDeclSpec *DS) { 45236d36806f1972f7ec1d2a3f59155187278c56508Argyrios Kyrtzidis ParenBraceBracketBalancer BalancerRAIIObj(*this); 45336d36806f1972f7ec1d2a3f59155187278c56508Argyrios Kyrtzidis 454d226f65006733ed7f709c3174f22ce33391cb58fJohn McCall Decl *SingleDecl = 0; 4555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (Tok.getKind()) { 4565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::semi: 457a1d71aea847a50b3acbd187d2ae9e5c1ead0f4e2Douglas Gregor if (!getLang().CPlusPlus0x) 458a1d71aea847a50b3acbd187d2ae9e5c1ead0f4e2Douglas Gregor Diag(Tok, diag::ext_top_level_semi) 459849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor << FixItHint::CreateRemoval(Tok.getLocation()); 4601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeToken(); 4625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // TODO: Invoke action for top-level semicolon. 463682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return DeclGroupPtrTy(); 46490b93d6f6961edd8f17e089253d655892adc1ef7Chris Lattner case tok::r_brace: 46590b93d6f6961edd8f17e089253d655892adc1ef7Chris Lattner Diag(Tok, diag::err_expected_external_declaration); 46690b93d6f6961edd8f17e089253d655892adc1ef7Chris Lattner ConsumeBrace(); 467682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return DeclGroupPtrTy(); 46890b93d6f6961edd8f17e089253d655892adc1ef7Chris Lattner case tok::eof: 46990b93d6f6961edd8f17e089253d655892adc1ef7Chris Lattner Diag(Tok, diag::err_expected_external_declaration); 470682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return DeclGroupPtrTy(); 471c3018153a11afe91849748a93d920040a571b76cChris Lattner case tok::kw___extension__: { 472c46d1a1f8af67a87689d7db9eaf96027282ccaeaChris Lattner // __extension__ silences extension warnings in the subexpression. 473c46d1a1f8af67a87689d7db9eaf96027282ccaeaChris Lattner ExtensionRAIIObject O(Diags); // Use RAII to do this. 47439146d6497ad5e7ca8ef639221e7b3e15d07c888Chris Lattner ConsumeToken(); 475bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt return ParseExternalDeclaration(Attr); 476c3018153a11afe91849748a93d920040a571b76cChris Lattner } 477dfab6cb59a703f2ce4d58371652ce879f4c85a09Anders Carlsson case tok::kw_asm: { 478bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt if (Attr.HasAttr) 479bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt Diag(Attr.Range.getBegin(), diag::err_attributes_not_allowed) 480bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt << Attr.Range; 481bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt 48260d7b3a319d84d688752be3870615ac0f111fb16John McCall ExprResult Result(ParseSimpleAsm()); 483a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 4843f9424f3206b834b5dd0e7c403348651ab6fafbbAnders Carlsson ExpectAndConsume(tok::semi, diag::err_expected_semi_after, 4853f9424f3206b834b5dd0e7c403348651ab6fafbbAnders Carlsson "top-level asm block"); 486dfab6cb59a703f2ce4d58371652ce879f4c85a09Anders Carlsson 487682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner if (Result.isInvalid()) 488682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return DeclGroupPtrTy(); 4899ae2f076ca5ab1feb3ba95629099ec2319833701John McCall SingleDecl = Actions.ActOnFileScopeAsmDecl(Tok.getLocation(), Result.get()); 490682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner break; 491dfab6cb59a703f2ce4d58371652ce879f4c85a09Anders Carlsson } 4925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::at: 493682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner // @ is not a legal token unless objc is enabled, no need to check for ObjC. 494682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner /// FIXME: ParseObjCAtDirectives should return a DeclGroup for things like 495682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner /// @class foo, bar; 496682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner SingleDecl = ParseObjCAtDirectives(); 497682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner break; 4985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::minus: 4995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::plus: 500682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner if (!getLang().ObjC1) { 501682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner Diag(Tok, diag::err_expected_external_declaration); 502682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner ConsumeToken(); 503682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return DeclGroupPtrTy(); 504682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner } 505682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner SingleDecl = ParseObjCMethodDefinition(); 506682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner break; 507791215b7a24666912c0b71175d2ca5ba082f666eDouglas Gregor case tok::code_completion: 50823c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Actions.CodeCompleteOrdinaryName(getCurScope(), 509f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall ObjCImpDecl? Sema::PCC_ObjCImplementation 510f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall : Sema::PCC_Namespace); 511dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor ConsumeCodeCompletionToken(); 512bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt return ParseExternalDeclaration(Attr); 513f780abc21c39cd4731b9e38f2d2d9f7d1510bd7bDouglas Gregor case tok::kw_using: 5148f08cb7d0b97786b17ef05e05caa55aad4d6bd39Chris Lattner case tok::kw_namespace: 5155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::kw_typedef: 516adcac8824a9cff13f1ef61a69e38c1041cba12eeDouglas Gregor case tok::kw_template: 517adcac8824a9cff13f1ef61a69e38c1041cba12eeDouglas Gregor case tok::kw_export: // As in 'export template' 518511d7aba3b12853fdb88729a0313b80a60eab8adAnders Carlsson case tok::kw_static_assert: 519bae35118fc5cea2da08567dbb9763af7f906dae2Chris Lattner // A function definition cannot start with a these keywords. 52097144fc41a9419bf6d74fc9450e8ef3f6e11f7e0Chris Lattner { 52197144fc41a9419bf6d74fc9450e8ef3f6e11f7e0Chris Lattner SourceLocation DeclEnd; 522bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt return ParseDeclaration(Declarator::FileContext, DeclEnd, Attr); 52397144fc41a9419bf6d74fc9450e8ef3f6e11f7e0Chris Lattner } 524d078e641450bbc5a20df8d3b54f87b27e398acb3Sebastian Redl 525d078e641450bbc5a20df8d3b54f87b27e398acb3Sebastian Redl case tok::kw_inline: 52688e64ca96d6c00c6f3bd43772cd325bede795d2aSebastian Redl if (getLang().CPlusPlus && NextToken().is(tok::kw_namespace)) { 52788e64ca96d6c00c6f3bd43772cd325bede795d2aSebastian Redl // Inline namespaces. Allowed as an extension even in C++03. 528d078e641450bbc5a20df8d3b54f87b27e398acb3Sebastian Redl SourceLocation DeclEnd; 529d078e641450bbc5a20df8d3b54f87b27e398acb3Sebastian Redl return ParseDeclaration(Declarator::FileContext, DeclEnd, Attr); 530d078e641450bbc5a20df8d3b54f87b27e398acb3Sebastian Redl } 531d078e641450bbc5a20df8d3b54f87b27e398acb3Sebastian Redl goto dont_know; 532d078e641450bbc5a20df8d3b54f87b27e398acb3Sebastian Redl 53345f965581935791a018df829a14dff53c1dd8f47Douglas Gregor case tok::kw_extern: 53445f965581935791a018df829a14dff53c1dd8f47Douglas Gregor if (getLang().CPlusPlus && NextToken().is(tok::kw_template)) { 53545f965581935791a018df829a14dff53c1dd8f47Douglas Gregor // Extern templates 53645f965581935791a018df829a14dff53c1dd8f47Douglas Gregor SourceLocation ExternLoc = ConsumeToken(); 53745f965581935791a018df829a14dff53c1dd8f47Douglas Gregor SourceLocation TemplateLoc = ConsumeToken(); 53845f965581935791a018df829a14dff53c1dd8f47Douglas Gregor SourceLocation DeclEnd; 53945f965581935791a018df829a14dff53c1dd8f47Douglas Gregor return Actions.ConvertDeclToDeclGroup( 54045f965581935791a018df829a14dff53c1dd8f47Douglas Gregor ParseExplicitInstantiation(ExternLoc, TemplateLoc, DeclEnd)); 54145f965581935791a018df829a14dff53c1dd8f47Douglas Gregor } 54245f965581935791a018df829a14dff53c1dd8f47Douglas Gregor // FIXME: Detect C++ linkage specifications here? 543d078e641450bbc5a20df8d3b54f87b27e398acb3Sebastian Redl goto dont_know; 5441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer default: 546d078e641450bbc5a20df8d3b54f87b27e398acb3Sebastian Redl dont_know: 5475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // We can't tell whether this is a function-definition or declaration yet. 54809a63c97b95eb4dc6fd6b2323929e8cf12af03ffDouglas Gregor if (DS) 54909a63c97b95eb4dc6fd6b2323929e8cf12af03ffDouglas Gregor return ParseDeclarationOrFunctionDefinition(*DS, Attr.AttrList); 55009a63c97b95eb4dc6fd6b2323929e8cf12af03ffDouglas Gregor else 55109a63c97b95eb4dc6fd6b2323929e8cf12af03ffDouglas Gregor return ParseDeclarationOrFunctionDefinition(Attr.AttrList); 5525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 5531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 554682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner // This routine returns a DeclGroup, if the thing we parsed only contains a 555682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner // single decl, convert it now. 556682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return Actions.ConvertDeclToDeclGroup(SingleDecl); 5575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 5585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 5591426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor/// \brief Determine whether the current token, if it occurs after a 5601426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor/// declarator, continues a declaration or declaration list. 561c82daefa3062721e98947e08193cd81b4e9df915Chris Lattnerbool Parser::isDeclarationAfterDeclarator() const { 5621426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor return Tok.is(tok::equal) || // int X()= -> not a function def 5631426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor Tok.is(tok::comma) || // int X(), -> not a function def 5641426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor Tok.is(tok::semi) || // int X(); -> not a function def 5651426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor Tok.is(tok::kw_asm) || // int X() __asm__ -> not a function def 5661426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor Tok.is(tok::kw___attribute) || // int X() __attr__ -> not a function def 5671426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor (getLang().CPlusPlus && 5681426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor Tok.is(tok::l_paren)); // int X(0) -> not a function def [C++] 5691426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor} 5701426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor 5711426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor/// \brief Determine whether the current token, if it occurs after a 5721426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor/// declarator, indicates the start of a function definition. 573004659a56916f2f81ede507c12516c146d6c0df3Chris Lattnerbool Parser::isStartOfFunctionDefinition(const ParsingDeclarator &Declarator) { 574004659a56916f2f81ede507c12516c146d6c0df3Chris Lattner assert(Declarator.getTypeObject(0).Kind == DeclaratorChunk::Function && 575004659a56916f2f81ede507c12516c146d6c0df3Chris Lattner "Isn't a function declarator"); 5765d1c6198cfe55f8de025902c621c0721b640ff60Chris Lattner if (Tok.is(tok::l_brace)) // int X() {} 5775d1c6198cfe55f8de025902c621c0721b640ff60Chris Lattner return true; 5785d1c6198cfe55f8de025902c621c0721b640ff60Chris Lattner 579004659a56916f2f81ede507c12516c146d6c0df3Chris Lattner // Handle K&R C argument lists: int X(f) int f; {} 580004659a56916f2f81ede507c12516c146d6c0df3Chris Lattner if (!getLang().CPlusPlus && 581004659a56916f2f81ede507c12516c146d6c0df3Chris Lattner Declarator.getTypeObject(0).Fun.isKNRPrototype()) 582004659a56916f2f81ede507c12516c146d6c0df3Chris Lattner return isDeclarationSpecifier(); 583004659a56916f2f81ede507c12516c146d6c0df3Chris Lattner 5845d1c6198cfe55f8de025902c621c0721b640ff60Chris Lattner return Tok.is(tok::colon) || // X() : Base() {} (used for ctors) 5855d1c6198cfe55f8de025902c621c0721b640ff60Chris Lattner Tok.is(tok::kw_try); // X() try { ... } 5861426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor} 5871426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor 5885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseDeclarationOrFunctionDefinition - Parse either a function-definition or 5895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// a declaration. We can't tell which we have until we read up to the 590c4b4e7b8f6ca9b036824e048af49cd2a52b57cdfDouglas Gregor/// compound-statement in function-definition. TemplateParams, if 591c4b4e7b8f6ca9b036824e048af49cd2a52b57cdfDouglas Gregor/// non-NULL, provides the template parameters when we're parsing a 5921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// C++ template-declaration. 5935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 5945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// function-definition: [C99 6.9.1] 595a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner/// decl-specs declarator declaration-list[opt] compound-statement 596a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner/// [C90] function-definition: [C99 6.7.1] - implicit int result 597a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump/// [C90] decl-specs[opt] declarator declaration-list[opt] compound-statement 598a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner/// 5995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// declaration: [C99 6.7] 600697e15f2a028f8997cccb24ecd05099988cfb1a9Chris Lattner/// declaration-specifiers init-declarator-list[opt] ';' 601697e15f2a028f8997cccb24ecd05099988cfb1a9Chris Lattner/// [!C99] init-declarator-list ';' [TODO: warn in c99 mode] 6025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [OMP] threadprivate-directive [TODO] 6035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 604682bf92db408a6cbc3d37b5496a99b6ef85041ecChris LattnerParser::DeclGroupPtrTy 6053acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz JahanianParser::ParseDeclarationOrFunctionDefinition(ParsingDeclSpec &DS, 6063acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz Jahanian AttributeList *Attr, 607bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt AccessSpecifier AS) { 6085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Parse the common declaration-specifiers piece. 609bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt if (Attr) 610bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt DS.AddAttributes(Attr); 611bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt 6120efc2c1716be4f1c5f1343cad3b047e74861f030Douglas Gregor ParseDeclarationSpecifiers(DS, ParsedTemplateInfo(), AS, DSC_top_level); 613a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 6145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // C99 6.7.2.3p6: Handle "struct-or-union identifier;", "enum { X };" 6155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // declaration-specifiers init-declarator-list[opt] ';' 616000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.is(tok::semi)) { 6175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeToken(); 618d226f65006733ed7f709c3174f22ce33391cb58fJohn McCall Decl *TheDecl = Actions.ParsedFreeStandingDeclSpec(getCurScope(), AS, DS); 61954abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall DS.complete(TheDecl); 620682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return Actions.ConvertDeclToDeclGroup(TheDecl); 6215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 622a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 623246e70f69cb8aeb67225c54690f1c6b25abd5a86Daniel Dunbar // ObjC2 allows prefix attributes on class interfaces and protocols. 624246e70f69cb8aeb67225c54690f1c6b25abd5a86Daniel Dunbar // FIXME: This still needs better diagnostics. We should only accept 625246e70f69cb8aeb67225c54690f1c6b25abd5a86Daniel Dunbar // attributes here, no types, etc. 626000732226610650837478cba97843d19b75f648eChris Lattner if (getLang().ObjC2 && Tok.is(tok::at)) { 627dac269b65eed82182fc3e96566dedd6562dfe11eSteve Naroff SourceLocation AtLoc = ConsumeToken(); // the "@" 6281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (!Tok.isObjCAtKeyword(tok::objc_interface) && 629246e70f69cb8aeb67225c54690f1c6b25abd5a86Daniel Dunbar !Tok.isObjCAtKeyword(tok::objc_protocol)) { 630246e70f69cb8aeb67225c54690f1c6b25abd5a86Daniel Dunbar Diag(Tok, diag::err_objc_unexpected_attr); 631cb53b361bce341c8591333c6997f62e480acc0b4Chris Lattner SkipUntil(tok::semi); // FIXME: better skip? 632682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return DeclGroupPtrTy(); 633cb53b361bce341c8591333c6997f62e480acc0b4Chris Lattner } 634d8ac05753dc4506224d445ff98399c01da3136e5John McCall 63554abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall DS.abort(); 63654abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall 6370de2ae28c603322f05e2d9200c7d457c8b928983Fariborz Jahanian const char *PrevSpec = 0; 638fec54013fcd0eb72642741584ca04c1bc292bef8John McCall unsigned DiagID; 639fec54013fcd0eb72642741584ca04c1bc292bef8John McCall if (DS.SetTypeSpecType(DeclSpec::TST_unspecified, AtLoc, PrevSpec, DiagID)) 640fec54013fcd0eb72642741584ca04c1bc292bef8John McCall Diag(AtLoc, DiagID) << PrevSpec; 6411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 642d226f65006733ed7f709c3174f22ce33391cb58fJohn McCall Decl *TheDecl = 0; 643246e70f69cb8aeb67225c54690f1c6b25abd5a86Daniel Dunbar if (Tok.isObjCAtKeyword(tok::objc_protocol)) 644682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner TheDecl = ParseObjCAtProtocolDeclaration(AtLoc, DS.getAttributes()); 645682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner else 646682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner TheDecl = ParseObjCAtInterfaceDeclaration(AtLoc, DS.getAttributes()); 647682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return Actions.ConvertDeclToDeclGroup(TheDecl); 648dac269b65eed82182fc3e96566dedd6562dfe11eSteve Naroff } 649a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 650c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner // If the declspec consisted only of 'extern' and we have a string 651c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner // literal following it, this must be a C++ linkage specifier like 652c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner // 'extern "C"'. 6533c6f6a7a1bb9969112617a26d2333bab2f6efd65Chris Lattner if (Tok.is(tok::string_literal) && getLang().CPlusPlus && 654c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner DS.getStorageClassSpec() == DeclSpec::SCS_extern && 655682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner DS.getParsedSpecifiers() == DeclSpec::PQ_StorageClassSpecifier) { 656d226f65006733ed7f709c3174f22ce33391cb58fJohn McCall Decl *TheDecl = ParseLinkage(DS, Declarator::FileContext); 657682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return Actions.ConvertDeclToDeclGroup(TheDecl); 658682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner } 659c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner 660d8ac05753dc4506224d445ff98399c01da3136e5John McCall return ParseDeclGroup(DS, Declarator::FileContext, true); 6615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 6625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6633acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz JahanianParser::DeclGroupPtrTy 6643acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz JahanianParser::ParseDeclarationOrFunctionDefinition(AttributeList *Attr, 6653acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz Jahanian AccessSpecifier AS) { 6663acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz Jahanian ParsingDeclSpec DS(*this); 6673acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz Jahanian return ParseDeclarationOrFunctionDefinition(DS, Attr, AS); 6683acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz Jahanian} 6693acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz Jahanian 6705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseFunctionDefinition - We parsed and verified that the specified 6715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// Declarator is well formed. If this is a K&R-style function, read the 6725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// parameters declaration-list, then start the compound-statement. 6735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 674a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner/// function-definition: [C99 6.9.1] 675a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner/// decl-specs declarator declaration-list[opt] compound-statement 676a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner/// [C90] function-definition: [C99 6.7.1] - implicit int result 677a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump/// [C90] decl-specs[opt] declarator declaration-list[opt] compound-statement 6787ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor/// [C++] function-definition: [C++ 8.4] 67923c4b1883b13dc17484b7214091b73f3ba29096eChris Lattner/// decl-specifier-seq[opt] declarator ctor-initializer[opt] 68023c4b1883b13dc17484b7214091b73f3ba29096eChris Lattner/// function-body 6817ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor/// [C++] function-definition: [C++ 8.4] 682d3a413d3b8eb39bcee5944bc545d9997c1abe492Sebastian Redl/// decl-specifier-seq[opt] declarator function-try-block 6835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 684d226f65006733ed7f709c3174f22ce33391cb58fJohn McCallDecl *Parser::ParseFunctionDefinition(ParsingDeclarator &D, 68552591bf224b2c43e2b00e265bb8599a620081925Douglas Gregor const ParsedTemplateInfo &TemplateInfo) { 6865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const DeclaratorChunk &FnTypeInfo = D.getTypeObject(0); 6875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(FnTypeInfo.Kind == DeclaratorChunk::Function && 6885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer "This isn't a function declarator!"); 6895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const DeclaratorChunk::FunctionTypeInfo &FTI = FnTypeInfo.Fun; 690a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 691a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner // If this is C90 and the declspecs were completely missing, fudge in an 692a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner // implicit int. We do this here because this is the only place where 693a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner // declaration-specifiers are completely optional in the grammar. 6942a327d11a07dfbdf20910cebbae38910eda111fdChris Lattner if (getLang().ImplicitInt && D.getDeclSpec().isEmpty()) { 695a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner const char *PrevSpec; 696fec54013fcd0eb72642741584ca04c1bc292bef8John McCall unsigned DiagID; 69731c286803c60c59d314525e047d0e72f9a1cb55bChris Lattner D.getMutableDeclSpec().SetTypeSpecType(DeclSpec::TST_int, 69831c286803c60c59d314525e047d0e72f9a1cb55bChris Lattner D.getIdentifierLoc(), 699fec54013fcd0eb72642741584ca04c1bc292bef8John McCall PrevSpec, DiagID); 700ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl D.SetRangeBegin(D.getDeclSpec().getSourceRange().getBegin()); 701a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner } 702a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 7035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If this declaration was formed with a K&R-style identifier list for the 7045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // arguments, parse declarations for all of the args next. 7055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // int foo(a,b) int a; float b; {} 706004659a56916f2f81ede507c12516c146d6c0df3Chris Lattner if (FTI.isKNRPrototype()) 7075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ParseKNRParamDeclarations(D); 7085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7097ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor // We should have either an opening brace or, in a C++ constructor, 7107ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor // we may have a colon. 711d3a413d3b8eb39bcee5944bc545d9997c1abe492Sebastian Redl if (Tok.isNot(tok::l_brace) && Tok.isNot(tok::colon) && 712d3a413d3b8eb39bcee5944bc545d9997c1abe492Sebastian Redl Tok.isNot(tok::kw_try)) { 7135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(Tok, diag::err_expected_fn_body); 7145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Skip over garbage, until we get to '{'. Don't eat the '{'. 7165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SkipUntil(tok::l_brace, true, true); 717a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 7185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If we didn't find the '{', bail out. 719000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.isNot(tok::l_brace)) 720d226f65006733ed7f709c3174f22ce33391cb58fJohn McCall return 0; 7215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 722a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 723b652cea7d7b70ebe3744fb6d72c9ad9cf3c95429Chris Lattner // Enter a scope for the function body. 7248935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor ParseScope BodyScope(this, Scope::FnScope|Scope::DeclScope); 725a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 726b652cea7d7b70ebe3744fb6d72c9ad9cf3c95429Chris Lattner // Tell the actions module that we have entered a function definition with the 727b652cea7d7b70ebe3744fb6d72c9ad9cf3c95429Chris Lattner // specified Declarator for the function. 728d226f65006733ed7f709c3174f22ce33391cb58fJohn McCall Decl *Res = TemplateInfo.TemplateParams? 72923c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Actions.ActOnStartOfFunctionTemplateDef(getCurScope(), 730f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall MultiTemplateParamsArg(Actions, 73152591bf224b2c43e2b00e265bb8599a620081925Douglas Gregor TemplateInfo.TemplateParams->data(), 73252591bf224b2c43e2b00e265bb8599a620081925Douglas Gregor TemplateInfo.TemplateParams->size()), 73352591bf224b2c43e2b00e265bb8599a620081925Douglas Gregor D) 73423c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor : Actions.ActOnStartOfFunctionDef(getCurScope(), D); 735a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 73654abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall // Break out of the ParsingDeclarator context before we parse the body. 73754abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall D.complete(Res); 73854abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall 73954abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall // Break out of the ParsingDeclSpec context, too. This const_cast is 74054abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall // safe because we're always the sole owner. 74154abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall D.getMutableDeclSpec().abort(); 74254abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall 743d3a413d3b8eb39bcee5944bc545d9997c1abe492Sebastian Redl if (Tok.is(tok::kw_try)) 744d3a413d3b8eb39bcee5944bc545d9997c1abe492Sebastian Redl return ParseFunctionTryBlock(Res); 745d3a413d3b8eb39bcee5944bc545d9997c1abe492Sebastian Redl 7467ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor // If we have a colon, then we're probably parsing a C++ 7477ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor // ctor-initializer. 748d6ca8da0f5a4115813055729faaa5128e994806dJohn McCall if (Tok.is(tok::colon)) { 7497ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor ParseConstructorInitializer(Res); 750d6ca8da0f5a4115813055729faaa5128e994806dJohn McCall 751d6ca8da0f5a4115813055729faaa5128e994806dJohn McCall // Recover from error. 752d6ca8da0f5a4115813055729faaa5128e994806dJohn McCall if (!Tok.is(tok::l_brace)) { 7539ae2f076ca5ab1feb3ba95629099ec2319833701John McCall Actions.ActOnFinishFunctionBody(Res, 0); 754d6ca8da0f5a4115813055729faaa5128e994806dJohn McCall return Res; 755d6ca8da0f5a4115813055729faaa5128e994806dJohn McCall } 756d6ca8da0f5a4115813055729faaa5128e994806dJohn McCall } else 757393612e6c7727f1fee50039254d9f434364cc0b2Fariborz Jahanian Actions.ActOnDefaultCtorInitializers(Res); 7587ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor 75940e9bc84a2ab49fc33c2b1a95c6674ab2b820e9eChris Lattner return ParseFunctionStatementBody(Res); 7605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 7615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseKNRParamDeclarations - Parse 'declaration-list[opt]' which provides 7635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// types for a function with a K&R-style identifier list for arguments. 7645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencervoid Parser::ParseKNRParamDeclarations(Declarator &D) { 7655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // We know that the top-level of this declarator is a function. 7665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DeclaratorChunk::FunctionTypeInfo &FTI = D.getTypeObject(0).Fun; 7675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 76804421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner // Enter function-declaration scope, limiting any declarators to the 76904421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner // function prototype scope, including parameter declarators. 7703218c4bb3b5d7250f12420de6db7ef3e3f805a75Douglas Gregor ParseScope PrototypeScope(this, Scope::FunctionPrototypeScope|Scope::DeclScope); 77104421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner 7725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Read all the argument declarations. 7735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer while (isDeclarationSpecifier()) { 7745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation DSStart = Tok.getLocation(); 775a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 7765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Parse the common declaration-specifiers piece. 7775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DeclSpec DS; 7785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ParseDeclarationSpecifiers(DS); 779a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 7805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // C99 6.9.1p6: 'each declaration in the declaration list shall have at 7815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // least one declarator'. 7825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // NOTE: GCC just makes this an ext-warn. It's not clear what it does with 7835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // the declarations though. It's trivial to ignore them, really hard to do 7845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // anything else with them. 785000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.is(tok::semi)) { 7865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(DSStart, diag::err_declaration_does_not_declare_param); 7875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeToken(); 7885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer continue; 7895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 790a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 7915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // C99 6.9.1p6: Declarations shall contain no storage-class specifiers other 7925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // than register. 7935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (DS.getStorageClassSpec() != DeclSpec::SCS_unspecified && 7945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DS.getStorageClassSpec() != DeclSpec::SCS_register) { 7955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(DS.getStorageClassSpecLoc(), 7965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer diag::err_invalid_storage_class_in_func_decl); 7975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DS.ClearStorageClassSpecs(); 7985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (DS.isThreadSpecified()) { 8005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(DS.getThreadSpecLoc(), 8015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer diag::err_invalid_storage_class_in_func_decl); 8025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DS.ClearStorageClassSpecs(); 8035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 804a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 8055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Parse the first declarator attached to this declspec. 8065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Declarator ParmDeclarator(DS, Declarator::KNRTypeListContext); 8075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ParseDeclarator(ParmDeclarator); 8085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 8095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Handle the full declarator list. 8105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer while (1) { 8115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If attributes are present, parse them. 81233efe2f088ae40b5129fe4ab021912e80129e155Richard Pennington if (Tok.is(tok::kw___attribute)) { 81333efe2f088ae40b5129fe4ab021912e80129e155Richard Pennington SourceLocation Loc; 81433efe2f088ae40b5129fe4ab021912e80129e155Richard Pennington AttributeList *AttrList = ParseGNUAttributes(&Loc); 81533efe2f088ae40b5129fe4ab021912e80129e155Richard Pennington ParmDeclarator.AddAttributes(AttrList, Loc); 81633efe2f088ae40b5129fe4ab021912e80129e155Richard Pennington } 817a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 8185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Ask the actions module to compute the type for this declarator. 819d226f65006733ed7f709c3174f22ce33391cb58fJohn McCall Decl *Param = 82023c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Actions.ActOnParamDeclarator(getCurScope(), ParmDeclarator); 8212bd42fadafddc8acf744b57a970bdc96a077c617Steve Naroff 822a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump if (Param && 8235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // A missing identifier has already been diagnosed. 8245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ParmDeclarator.getIdentifier()) { 8255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 8265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Scan the argument list looking for the correct param to apply this 8275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // type. 8285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer for (unsigned i = 0; ; ++i) { 8295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // C99 6.9.1p6: those declarators shall declare only identifiers from 8305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // the identifier list. 8315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (i == FTI.NumArgs) { 8321ab3b96de160e4fbffec2a776e284a48a3bb543dChris Lattner Diag(ParmDeclarator.getIdentifierLoc(), diag::err_no_matching_param) 8336898e33d0b28346a4dbe9a666e0e4188fea80460Chris Lattner << ParmDeclarator.getIdentifier(); 8345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 8355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 836a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 8375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (FTI.ArgInfo[i].Ident == ParmDeclarator.getIdentifier()) { 8385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Reject redefinitions of parameters. 83904421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner if (FTI.ArgInfo[i].Param) { 8405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(ParmDeclarator.getIdentifierLoc(), 8411ab3b96de160e4fbffec2a776e284a48a3bb543dChris Lattner diag::err_param_redefinition) 8426898e33d0b28346a4dbe9a666e0e4188fea80460Chris Lattner << ParmDeclarator.getIdentifier(); 8435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } else { 84404421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner FTI.ArgInfo[i].Param = Param; 8455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 8465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 8475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 8485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 8495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 8505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 8515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If we don't have a comma, it is either the end of the list (a ';') or 8525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // an error, bail out. 853000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.isNot(tok::comma)) 8545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 855a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 8565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Consume the comma. 8575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeToken(); 858a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 8595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Parse the next declarator. 8605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ParmDeclarator.clear(); 8615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ParseDeclarator(ParmDeclarator); 8625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 863a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 864000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.is(tok::semi)) { 8655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeToken(); 8665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } else { 8675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(Tok, diag::err_parse_error); 8685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Skip to end of block or statement 8695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SkipUntil(tok::semi, true); 870000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.is(tok::semi)) 8715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeToken(); 8725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 8735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 874a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 8755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // The actions module must verify that all arguments were declared. 87623c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Actions.ActOnFinishKNRParamDeclarations(getCurScope(), D, Tok.getLocation()); 8775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 8785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 8795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 8805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseAsmStringLiteral - This is just a normal string-literal, but is not 8815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// allowed to be a wide string, and is not subject to character translation. 8825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 8835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [GNU] asm-string-literal: 8845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// string-literal 8855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 88660d7b3a319d84d688752be3870615ac0f111fb16John McCallParser::ExprResult Parser::ParseAsmStringLiteral() { 8875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (!isTokenStringLiteral()) { 8885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(Tok, diag::err_expected_string_literal); 88961364dddc33383e62cfe3b841dbc0f471280d95bSebastian Redl return ExprError(); 8905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 891a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 89260d7b3a319d84d688752be3870615ac0f111fb16John McCall ExprResult Res(ParseStringLiteralExpression()); 893effa8d1c97b00a3f53e972b0e61d9aade5ea1c57Sebastian Redl if (Res.isInvalid()) return move(Res); 894a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 8955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // TODO: Diagnose: wide string literal in 'asm' 896a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 897effa8d1c97b00a3f53e972b0e61d9aade5ea1c57Sebastian Redl return move(Res); 8985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 8995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 9005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseSimpleAsm 9015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 9025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [GNU] simple-asm-expr: 9035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 'asm' '(' asm-string-literal ')' 9045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 90560d7b3a319d84d688752be3870615ac0f111fb16John McCallParser::ExprResult Parser::ParseSimpleAsm(SourceLocation *EndLoc) { 906000732226610650837478cba97843d19b75f648eChris Lattner assert(Tok.is(tok::kw_asm) && "Not an asm!"); 907dfab6cb59a703f2ce4d58371652ce879f4c85a09Anders Carlsson SourceLocation Loc = ConsumeToken(); 908a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 9097a6ae743b2ecfdfadadf7df53b569a9a3871a8fdJohn McCall if (Tok.is(tok::kw_volatile)) { 910841d5e607f81bf5627e47d0c62ead29f28b5b0c2John McCall // Remove from the end of 'asm' to the end of 'volatile'. 911841d5e607f81bf5627e47d0c62ead29f28b5b0c2John McCall SourceRange RemovalRange(PP.getLocForEndOfToken(Loc), 912841d5e607f81bf5627e47d0c62ead29f28b5b0c2John McCall PP.getLocForEndOfToken(Tok.getLocation())); 913841d5e607f81bf5627e47d0c62ead29f28b5b0c2John McCall 914841d5e607f81bf5627e47d0c62ead29f28b5b0c2John McCall Diag(Tok, diag::warn_file_asm_volatile) 915849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor << FixItHint::CreateRemoval(RemovalRange); 9167a6ae743b2ecfdfadadf7df53b569a9a3871a8fdJohn McCall ConsumeToken(); 9177a6ae743b2ecfdfadadf7df53b569a9a3871a8fdJohn McCall } 9187a6ae743b2ecfdfadadf7df53b569a9a3871a8fdJohn McCall 919000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.isNot(tok::l_paren)) { 9201ab3b96de160e4fbffec2a776e284a48a3bb543dChris Lattner Diag(Tok, diag::err_expected_lparen_after) << "asm"; 92161364dddc33383e62cfe3b841dbc0f471280d95bSebastian Redl return ExprError(); 9225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 923a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 924ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl Loc = ConsumeParen(); 925a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 92660d7b3a319d84d688752be3870615ac0f111fb16John McCall ExprResult Result(ParseAsmStringLiteral()); 927a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 928ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl if (Result.isInvalid()) { 929ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl SkipUntil(tok::r_paren, true, true); 930ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl if (EndLoc) 931ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl *EndLoc = Tok.getLocation(); 932ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl ConsumeAnyToken(); 933ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl } else { 934ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl Loc = MatchRHSPunctuation(tok::r_paren, Loc); 935ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl if (EndLoc) 936ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl *EndLoc = Loc; 937ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl } 938a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 939effa8d1c97b00a3f53e972b0e61d9aade5ea1c57Sebastian Redl return move(Result); 9405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 9415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 942eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// TryAnnotateTypeOrScopeToken - If the current token position is on a 943eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// typename (possibly qualified in C++) or a C++ scope specifier not followed 944eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// by a typename, TryAnnotateTypeOrScopeToken will replace one or more tokens 945eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// with a single annotation token representing the typename or C++ scope 946eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// respectively. 947eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// This simplifies handling of C++ scope specifiers and allows efficient 948eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// backtracking without the need to re-parse and resolve nested-names and 949eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// typenames. 95044802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// It will mainly be called when we expect to treat identifiers as typenames 95144802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// (if they are typenames). For example, in C we do not expect identifiers 95244802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// inside expressions to be treated as typenames so it will not be called 95344802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// for expressions in C. 95444802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// The benefit for C/ObjC is that a typename will be annotated and 955b43a50ff1b0b171ece84425b0ad83a9a31f038faSteve Naroff/// Actions.getTypeName will not be needed to be called again (e.g. getTypeName 95644802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// will not be called twice, once to check whether we have a declaration 95744802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// specifier, and another one to get the actual type inside 95844802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// ParseDeclarationSpecifiers). 959a7bc7c880f86bc180684ef032d06df51bcae7a23Chris Lattner/// 9609ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall/// This returns true if an error occurred. 9611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// 96255a7cefc846765ac7d142a63f773747a20518d71Chris Lattner/// Note that this routine emits an error if you call it with ::new or ::delete 96355a7cefc846765ac7d142a63f773747a20518d71Chris Lattner/// as the current tokens, so only call it in contexts where these are invalid. 964495c35d291da48c4f5655bbb54d15128ddde0d4dDouglas Gregorbool Parser::TryAnnotateTypeOrScopeToken(bool EnteringContext) { 9651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert((Tok.is(tok::identifier) || Tok.is(tok::coloncolon) 966ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall || Tok.is(tok::kw_typename) || Tok.is(tok::annot_cxxscope)) && 9677452c6fc567ea1799f617395d0fa4c7ed075e5d9Chris Lattner "Cannot be a type or scope token!"); 9681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 969d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor if (Tok.is(tok::kw_typename)) { 970d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor // Parse a C++ typename-specifier, e.g., "typename T::type". 971d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor // 972d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor // typename-specifier: 973d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor // 'typename' '::' [opt] nested-name-specifier identifier 9741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // 'typename' '::' [opt] nested-name-specifier template [opt] 9751734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor // simple-template-id 976d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor SourceLocation TypenameLoc = ConsumeToken(); 977d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor CXXScopeSpec SS; 978b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall if (ParseOptionalCXXScopeSpecifier(SS, /*ObjectType=*/ParsedType(), false)) 9799ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return true; 9809ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall if (!SS.isSet()) { 981d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor Diag(Tok.getLocation(), diag::err_expected_qualified_after_typename); 9829ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return true; 983d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor } 984d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor 985d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor TypeResult Ty; 986d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor if (Tok.is(tok::identifier)) { 987d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor // FIXME: check whether the next token is '<', first! 98823c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Ty = Actions.ActOnTypenameType(getCurScope(), TypenameLoc, SS, 9891a15dae8be2b28e02b6639aa92b832465c5be420Douglas Gregor *Tok.getIdentifierInfo(), 990d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor Tok.getLocation()); 9911734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor } else if (Tok.is(tok::annot_template_id)) { 9921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump TemplateIdAnnotation *TemplateId 9931734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor = static_cast<TemplateIdAnnotation *>(Tok.getAnnotationValue()); 9941734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor if (TemplateId->Kind == TNK_Function_template) { 9951734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor Diag(Tok, diag::err_typename_refers_to_non_type_template) 9961734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor << Tok.getAnnotationRange(); 9979ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return true; 9981734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor } 999d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor 100031a19b6989bbf326d2de5ae12e712e2a65ca9c34Douglas Gregor AnnotateTemplateIdTokenAsType(0); 10011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert(Tok.is(tok::annot_typename) && 10021734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor "AnnotateTemplateIdTokenAsType isn't working properly"); 100331a19b6989bbf326d2de5ae12e712e2a65ca9c34Douglas Gregor if (Tok.getAnnotationValue()) 100423c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Ty = Actions.ActOnTypenameType(getCurScope(), TypenameLoc, SS, 10051a15dae8be2b28e02b6639aa92b832465c5be420Douglas Gregor SourceLocation(), 1006b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall getTypeAnnotation(Tok)); 100731a19b6989bbf326d2de5ae12e712e2a65ca9c34Douglas Gregor else 100831a19b6989bbf326d2de5ae12e712e2a65ca9c34Douglas Gregor Ty = true; 10091734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor } else { 10101734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor Diag(Tok, diag::err_expected_type_name_after_typename) 10111734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor << SS.getRange(); 10129ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return true; 10131734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor } 10141734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor 101539d67117f896c6e2faa727671ef64b3c04b0e3feSebastian Redl SourceLocation EndLoc = Tok.getLastLoc(); 10161734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor Tok.setKind(tok::annot_typename); 1017b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall setTypeAnnotation(Tok, Ty.isInvalid() ? ParsedType() : Ty.get()); 101839d67117f896c6e2faa727671ef64b3c04b0e3feSebastian Redl Tok.setAnnotationEndLoc(EndLoc); 10191734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor Tok.setLocation(TypenameLoc); 10201734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor PP.AnnotateCachedTokens(Tok); 10219ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return false; 1022d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor } 1023d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor 1024ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall // Remembers whether the token was originally a scope annotation. 1025ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall bool wasScopeAnnotation = Tok.is(tok::annot_cxxscope); 1026ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall 1027eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis CXXScopeSpec SS; 10284bdd91c09fd59e0c154d759288beff300e31e1d0Argyrios Kyrtzidis if (getLang().CPlusPlus) 1029b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall if (ParseOptionalCXXScopeSpecifier(SS, ParsedType(), EnteringContext)) 10309ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return true; 1031eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis 1032eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis if (Tok.is(tok::identifier)) { 1033608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner // Determine whether the identifier is a type name. 1034b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall if (ParsedType Ty = Actions.getTypeName(*Tok.getIdentifierInfo(), 1035b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall Tok.getLocation(), getCurScope(), 1036b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall &SS)) { 1037608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner // This is a typename. Replace the current token in-place with an 1038608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner // annotation type token. 1039b31757b68afe06ba442a05775d08fe7aa0f6f889Chris Lattner Tok.setKind(tok::annot_typename); 1040b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall setTypeAnnotation(Tok, Ty); 1041608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner Tok.setAnnotationEndLoc(Tok.getLocation()); 1042608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner if (SS.isNotEmpty()) // it was a C++ qualified type name. 1043608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner Tok.setLocation(SS.getBeginLoc()); 10441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1045608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner // In case the tokens were cached, have Preprocessor replace 1046608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner // them with the annotation token. 1047608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner PP.AnnotateCachedTokens(Tok); 10489ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return false; 10491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 105039a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor 105139a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor if (!getLang().CPlusPlus) { 1052608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner // If we're in C, we can't have :: tokens at all (the lexer won't return 1053608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner // them). If the identifier is not a type, then it can't be scope either, 10541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // just early exit. 1055608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner return false; 1056eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis } 10571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 105839a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // If this is a template-id, annotate with a template-id or type token. 105955f6b14230c94272efbbcdd89a92224c8db9f225Douglas Gregor if (NextToken().is(tok::less)) { 10607532dc66648cfe7432c9fe66dec5225f0ab301c6Douglas Gregor TemplateTy Template; 1061014e88d94ff83e3aad4e33b16413a2d1817ec208Douglas Gregor UnqualifiedId TemplateName; 1062014e88d94ff83e3aad4e33b16413a2d1817ec208Douglas Gregor TemplateName.setIdentifier(Tok.getIdentifierInfo(), Tok.getLocation()); 10631fd6d44d7ca97631497551bbf98866263143d706Douglas Gregor bool MemberOfUnknownSpecialization; 10641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (TemplateNameKind TNK 10657c15353ccaed24f2df932571166bf305c1b98b6dAbramo Bagnara = Actions.isTemplateName(getCurScope(), SS, 10667c15353ccaed24f2df932571166bf305c1b98b6dAbramo Bagnara /*hasTemplateKeyword=*/false, TemplateName, 1067b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall /*ObjectType=*/ ParsedType(), 1068b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall EnteringContext, 10697c15353ccaed24f2df932571166bf305c1b98b6dAbramo Bagnara Template, MemberOfUnknownSpecialization)) { 1070ca1bdd7c269a2390d43c040a60511edd017ee130Douglas Gregor // Consume the identifier. 1071ca1bdd7c269a2390d43c040a60511edd017ee130Douglas Gregor ConsumeToken(); 1072ca1bdd7c269a2390d43c040a60511edd017ee130Douglas Gregor if (AnnotateTemplateIdToken(Template, TNK, &SS, TemplateName)) { 1073c8e27cc402043ec86c1698c09e4ee9e415b16207Chris Lattner // If an unrecoverable error occurred, we need to return true here, 1074c8e27cc402043ec86c1698c09e4ee9e415b16207Chris Lattner // because the token stream is in a damaged state. We may not return 1075c8e27cc402043ec86c1698c09e4ee9e415b16207Chris Lattner // a valid identifier. 10769ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return true; 1077c8e27cc402043ec86c1698c09e4ee9e415b16207Chris Lattner } 1078ca1bdd7c269a2390d43c040a60511edd017ee130Douglas Gregor } 107955f6b14230c94272efbbcdd89a92224c8db9f225Douglas Gregor } 1080d6fb7ef028d9aa0b3e8943b7bc049c524437b407Douglas Gregor 108139a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // The current token, which is either an identifier or a 108239a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // template-id, is not part of the annotation. Fall through to 108339a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // push that token back into the stream and complete the C++ scope 108439a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // specifier annotation. 10851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 1086eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis 108739a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor if (Tok.is(tok::annot_template_id)) { 10881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump TemplateIdAnnotation *TemplateId 108939a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor = static_cast<TemplateIdAnnotation *>(Tok.getAnnotationValue()); 1090c45c232440dfafedca1a3773b904fb42609b1b19Douglas Gregor if (TemplateId->Kind == TNK_Type_template) { 109139a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // A template-id that refers to a type was parsed into a 109239a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // template-id annotation in a context where we weren't allowed 109339a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // to produce a type annotation token. Update the template-id 109439a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // annotation token to a type annotation token now. 109531a19b6989bbf326d2de5ae12e712e2a65ca9c34Douglas Gregor AnnotateTemplateIdTokenAsType(&SS); 10969ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return false; 109739a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor } 109839a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor } 1099d6fb7ef028d9aa0b3e8943b7bc049c524437b407Douglas Gregor 11006ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner if (SS.isEmpty()) 11019ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return false; 11021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11036ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner // A C++ scope specifier that isn't followed by a typename. 11046ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner // Push the current token back into the token stream (or revert it if it is 11056ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner // cached) and use an annotation scope token for current token. 11066ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner if (PP.isBacktrackEnabled()) 11076ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner PP.RevertCachedTokens(1); 11086ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner else 11096ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner PP.EnterToken(Tok); 11106ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner Tok.setKind(tok::annot_cxxscope); 11113507369940bfb269551bfa1fec812481f60e3552Douglas Gregor Tok.setAnnotationValue(SS.getScopeRep()); 11126ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner Tok.setAnnotationRange(SS.getRange()); 11136ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner 1114ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall // In case the tokens were cached, have Preprocessor replace them 1115ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall // with the annotation token. We don't need to do this if we've 1116ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall // just reverted back to the state we were in before being called. 1117ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall if (!wasScopeAnnotation) 1118ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall PP.AnnotateCachedTokens(Tok); 11199ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return false; 1120eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis} 1121eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis 1122eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// TryAnnotateScopeToken - Like TryAnnotateTypeOrScopeToken but only 112339a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor/// annotates C++ scope specifiers and template-ids. This returns 1124c8e27cc402043ec86c1698c09e4ee9e415b16207Chris Lattner/// true if the token was annotated or there was an error that could not be 1125c8e27cc402043ec86c1698c09e4ee9e415b16207Chris Lattner/// recovered from. 11261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// 112755a7cefc846765ac7d142a63f773747a20518d71Chris Lattner/// Note that this routine emits an error if you call it with ::new or ::delete 112855a7cefc846765ac7d142a63f773747a20518d71Chris Lattner/// as the current tokens, so only call it in contexts where these are invalid. 1129495c35d291da48c4f5655bbb54d15128ddde0d4dDouglas Gregorbool Parser::TryAnnotateCXXScopeToken(bool EnteringContext) { 11304bdd91c09fd59e0c154d759288beff300e31e1d0Argyrios Kyrtzidis assert(getLang().CPlusPlus && 11316ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner "Call sites of this function should be guarded by checking for C++"); 11327452c6fc567ea1799f617395d0fa4c7ed075e5d9Chris Lattner assert((Tok.is(tok::identifier) || Tok.is(tok::coloncolon)) && 11337452c6fc567ea1799f617395d0fa4c7ed075e5d9Chris Lattner "Cannot be a type or scope token!"); 1134eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis 11354bdd91c09fd59e0c154d759288beff300e31e1d0Argyrios Kyrtzidis CXXScopeSpec SS; 1136b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall if (ParseOptionalCXXScopeSpecifier(SS, ParsedType(), EnteringContext)) 11379ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return true; 1138edc287751a4b05e3b4d8ff2b38fa30c5b59a548bJeffrey Yasskin if (SS.isEmpty()) 11399ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return false; 1140eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis 11416ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner // Push the current token back into the token stream (or revert it if it is 11426ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner // cached) and use an annotation scope token for current token. 11436ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner if (PP.isBacktrackEnabled()) 11446ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner PP.RevertCachedTokens(1); 11456ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner else 11466ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner PP.EnterToken(Tok); 11476ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner Tok.setKind(tok::annot_cxxscope); 11483507369940bfb269551bfa1fec812481f60e3552Douglas Gregor Tok.setAnnotationValue(SS.getScopeRep()); 11496ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner Tok.setAnnotationRange(SS.getRange()); 11506ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner 11516ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner // In case the tokens were cached, have Preprocessor replace them with the 11526ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner // annotation token. 11536ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner PP.AnnotateCachedTokens(Tok); 11549ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return false; 1155eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis} 11566c94a6d77f456f23ecd4c2061e6413786b5e6571John McCall 1157dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregorvoid Parser::CodeCompletionRecovery() { 115823c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor for (Scope *S = getCurScope(); S; S = S->getParent()) { 1159dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor if (S->getFlags() & Scope::FnScope) { 1160f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall Actions.CodeCompleteOrdinaryName(getCurScope(), Sema::PCC_RecoveryInFunction); 1161dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor return; 1162dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor } 1163dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor 1164dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor if (S->getFlags() & Scope::ClassScope) { 1165f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall Actions.CodeCompleteOrdinaryName(getCurScope(), Sema::PCC_Class); 1166dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor return; 1167dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor } 1168dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor } 1169dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor 1170f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall Actions.CodeCompleteOrdinaryName(getCurScope(), Sema::PCC_Namespace); 1171dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor} 1172dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor 11736c94a6d77f456f23ecd4c2061e6413786b5e6571John McCall// Anchor the Parser::FieldCallback vtable to this translation unit. 11746c94a6d77f456f23ecd4c2061e6413786b5e6571John McCall// We use a spurious method instead of the destructor because 11756c94a6d77f456f23ecd4c2061e6413786b5e6571John McCall// destroying FieldCallbacks can actually be slightly 11766c94a6d77f456f23ecd4c2061e6413786b5e6571John McCall// performance-sensitive. 11776c94a6d77f456f23ecd4c2061e6413786b5e6571John McCallvoid Parser::FieldCallback::_anchor() { 11786c94a6d77f456f23ecd4c2061e6413786b5e6571John McCall} 1179f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor 1180f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor// Code-completion pass-through functions 1181f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor 1182f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregorvoid Parser::CodeCompleteDirective(bool InConditional) { 1183f29c5233085a5af795c3c01b94d319e5b3235d56Douglas Gregor Actions.CodeCompletePreprocessorDirective(InConditional); 1184f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor} 1185f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor 1186f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregorvoid Parser::CodeCompleteInConditionalExclusion() { 1187f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor Actions.CodeCompleteInPreprocessorConditionalExclusion(getCurScope()); 1188f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor} 11891fbb447e9d43c2c676e94081fbfee7eb6cbe933bDouglas Gregor 11901fbb447e9d43c2c676e94081fbfee7eb6cbe933bDouglas Gregorvoid Parser::CodeCompleteMacroName(bool IsDefinition) { 1191f29c5233085a5af795c3c01b94d319e5b3235d56Douglas Gregor Actions.CodeCompletePreprocessorMacroName(IsDefinition); 1192f29c5233085a5af795c3c01b94d319e5b3235d56Douglas Gregor} 1193f29c5233085a5af795c3c01b94d319e5b3235d56Douglas Gregor 1194f29c5233085a5af795c3c01b94d319e5b3235d56Douglas Gregorvoid Parser::CodeCompletePreprocessorExpression() { 1195f29c5233085a5af795c3c01b94d319e5b3235d56Douglas Gregor Actions.CodeCompletePreprocessorExpression(); 1196f29c5233085a5af795c3c01b94d319e5b3235d56Douglas Gregor} 1197f29c5233085a5af795c3c01b94d319e5b3235d56Douglas Gregor 1198f29c5233085a5af795c3c01b94d319e5b3235d56Douglas Gregorvoid Parser::CodeCompleteMacroArgument(IdentifierInfo *Macro, 1199f29c5233085a5af795c3c01b94d319e5b3235d56Douglas Gregor MacroInfo *MacroInfo, 1200f29c5233085a5af795c3c01b94d319e5b3235d56Douglas Gregor unsigned ArgumentIndex) { 1201f29c5233085a5af795c3c01b94d319e5b3235d56Douglas Gregor Actions.CodeCompletePreprocessorMacroArgument(getCurScope(), Macro, MacroInfo, 1202f29c5233085a5af795c3c01b94d319e5b3235d56Douglas Gregor ArgumentIndex); 12031fbb447e9d43c2c676e94081fbfee7eb6cbe933bDouglas Gregor} 120455817afdf9d453a443262a733f6caf6692dca118Douglas Gregor 120555817afdf9d453a443262a733f6caf6692dca118Douglas Gregorvoid Parser::CodeCompleteNaturalLanguage() { 120655817afdf9d453a443262a733f6caf6692dca118Douglas Gregor Actions.CodeCompleteNaturalLanguage(); 120755817afdf9d453a443262a733f6caf6692dca118Douglas Gregor} 1208