Parser.cpp revision d6ca8da0f5a4115813055729faaa5128e994806d
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" 165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/Parse/DeclSpec.h" 175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/Parse/Scope.h" 18314b97f8c564b465af605efaee23f91ec18a982bDouglas Gregor#include "clang/Parse/Template.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 245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid SpencerParser::Parser(Preprocessor &pp, Action &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); 295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer CurScope = 0; 309e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner NumCachedScopes = 0; 315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ParenCount = BracketCount = BraceCount = 0; 32b28317a8e5e0e2953d1e5406d753d6c3c7f1e7d2Chris Lattner ObjCImpDecl = DeclPtrTy(); 33fcdd8fe26de3eee44927600bf1853e21bd90dd84Daniel Dunbar 34fcdd8fe26de3eee44927600bf1853e21bd90dd84Daniel Dunbar // Add #pragma handlers. These are removed and destroyed in the 35fcdd8fe26de3eee44927600bf1853e21bd90dd84Daniel Dunbar // destructor. 364726d03ab3abce41911c31d1354a18f1258cae4dTed Kremenek PackHandler.reset(new 374726d03ab3abce41911c31d1354a18f1258cae4dTed Kremenek PragmaPackHandler(&PP.getIdentifierTable().get("pack"), actions)); 384726d03ab3abce41911c31d1354a18f1258cae4dTed Kremenek PP.AddPragmaHandler(0, PackHandler.get()); 391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 404726d03ab3abce41911c31d1354a18f1258cae4dTed Kremenek UnusedHandler.reset(new 414726d03ab3abce41911c31d1354a18f1258cae4dTed Kremenek PragmaUnusedHandler(&PP.getIdentifierTable().get("unused"), actions, 424726d03ab3abce41911c31d1354a18f1258cae4dTed Kremenek *this)); 434726d03ab3abce41911c31d1354a18f1258cae4dTed Kremenek PP.AddPragmaHandler(0, UnusedHandler.get()); 449991479ad5dde617168cc1e4b18425cdbbfd9fa9Eli Friedman 459991479ad5dde617168cc1e4b18425cdbbfd9fa9Eli Friedman WeakHandler.reset(new 469991479ad5dde617168cc1e4b18425cdbbfd9fa9Eli Friedman PragmaWeakHandler(&PP.getIdentifierTable().get("weak"), actions)); 479991479ad5dde617168cc1e4b18425cdbbfd9fa9Eli Friedman PP.AddPragmaHandler(0, WeakHandler.get()); 485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 500102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner/// If a crash happens while the parser is active, print out a line indicating 510102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner/// what the current token is. 520102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattnervoid PrettyStackTraceParserEntry::print(llvm::raw_ostream &OS) const { 530102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner const Token &Tok = P.getCurToken(); 54ddcbc0a72a04a5ae2493088f1437200a9ea480b1Chris Lattner if (Tok.is(tok::eof)) { 550102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner OS << "<eof> parser at end of file\n"; 560102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner return; 570102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner } 581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 59ddcbc0a72a04a5ae2493088f1437200a9ea480b1Chris Lattner if (Tok.getLocation().isInvalid()) { 60ddcbc0a72a04a5ae2493088f1437200a9ea480b1Chris Lattner OS << "<unknown> parser at unknown location\n"; 61ddcbc0a72a04a5ae2493088f1437200a9ea480b1Chris Lattner return; 62ddcbc0a72a04a5ae2493088f1437200a9ea480b1Chris Lattner } 631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 640102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner const Preprocessor &PP = P.getPreprocessor(); 650102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner Tok.getLocation().print(OS, PP.getSourceManager()); 669fa31dd71e0414e2ca905380e2f8d42710b22c82Daniel Dunbar if (Tok.isAnnotation()) 679fa31dd71e0414e2ca905380e2f8d42710b22c82Daniel Dunbar OS << ": at annotation token \n"; 689fa31dd71e0414e2ca905380e2f8d42710b22c82Daniel Dunbar else 699fa31dd71e0414e2ca905380e2f8d42710b22c82Daniel Dunbar OS << ": current parser token '" << PP.getSpelling(Tok) << "'\n"; 70f780abc21c39cd4731b9e38f2d2d9f7d1510bd7bDouglas Gregor} 715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 720102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner 733cbfe2c4159e0a219ae660d50625c013aa4afbd0Chris LattnerDiagnosticBuilder Parser::Diag(SourceLocation Loc, unsigned DiagID) { 740102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner return Diags.Report(FullSourceLoc(Loc, PP.getSourceManager()), DiagID); 751ab3b96de160e4fbffec2a776e284a48a3bb543dChris Lattner} 761ab3b96de160e4fbffec2a776e284a48a3bb543dChris Lattner 773cbfe2c4159e0a219ae660d50625c013aa4afbd0Chris LattnerDiagnosticBuilder Parser::Diag(const Token &Tok, unsigned DiagID) { 781ab3b96de160e4fbffec2a776e284a48a3bb543dChris Lattner return Diag(Tok.getLocation(), DiagID); 795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 814b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor/// \brief Emits a diagnostic suggesting parentheses surrounding a 824b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor/// given range. 834b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor/// 844b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor/// \param Loc The location where we'll emit the diagnostic. 854b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor/// \param Loc The kind of diagnostic to emit. 864b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor/// \param ParenRange Source range enclosing code that should be parenthesized. 874b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregorvoid Parser::SuggestParentheses(SourceLocation Loc, unsigned DK, 884b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor SourceRange ParenRange) { 89b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor SourceLocation EndLoc = PP.getLocForEndOfToken(ParenRange.getEnd()); 90b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor if (!ParenRange.getEnd().isFileID() || EndLoc.isInvalid()) { 914b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor // We can't display the parentheses, so just dig the 924b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor // warning/error and return. 934b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor Diag(Loc, DK); 944b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor return; 954b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor } 961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Diag(Loc, DK) 98849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor << FixItHint::CreateInsertion(ParenRange.getBegin(), "(") 99849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor << FixItHint::CreateInsertion(EndLoc, ")"); 1004b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor} 1014b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor 1025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// MatchRHSPunctuation - For punctuation with a LHS and RHS (e.g. '['/']'), 1035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// this helper function matches and consumes the specified RHS token if 1045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// present. If not present, it emits the specified diagnostic indicating 1055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// that the parser failed to match the RHS of the token at LHSLoc. LHSName 1065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// should be the name of the unmatched LHS token. 1075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid SpencerSourceLocation Parser::MatchRHSPunctuation(tok::TokenKind RHSTok, 1085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation LHSLoc) { 109a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 110000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.is(RHSTok)) 1115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return ConsumeAnyToken(); 112a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 1135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation R = Tok.getLocation(); 1145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const char *LHSName = "unknown"; 1155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer diag::kind DID = diag::err_parse_error; 1165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (RHSTok) { 1175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer default: break; 1185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::r_paren : LHSName = "("; DID = diag::err_expected_rparen; break; 1195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::r_brace : LHSName = "{"; DID = diag::err_expected_rbrace; break; 1205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::r_square: LHSName = "["; DID = diag::err_expected_rsquare; break; 1215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::greater: LHSName = "<"; DID = diag::err_expected_greater; break; 1225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(Tok, DID); 12428eb7e992b9a266abb300da25b6d3c1557cec361Chris Lattner Diag(LHSLoc, diag::note_matching) << LHSName; 1255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SkipUntil(RHSTok); 1265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return R; 1275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 1285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ExpectAndConsume - The parser expects that 'ExpectedTok' is next in the 1305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// input. If so, it is consumed and false is returned. 1315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 1325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// If the input is malformed, this emits the specified diagnostic. Next, if 1335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// SkipToTok is specified, it calls SkipUntil(SkipToTok). Finally, true is 1345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// returned. 1355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerbool Parser::ExpectAndConsume(tok::TokenKind ExpectedTok, unsigned DiagID, 1365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const char *Msg, tok::TokenKind SkipToTok) { 137000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.is(ExpectedTok)) { 1385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeAnyToken(); 1395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 1405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 141a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 1424b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor const char *Spelling = 0; 143b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor SourceLocation EndLoc = PP.getLocForEndOfToken(PrevTokLocation); 1441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (EndLoc.isValid() && 145b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor (Spelling = tok::getTokenSimpleSpelling(ExpectedTok))) { 1464b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor // Show what code to insert to fix this problem. 1471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Diag(EndLoc, DiagID) 1484b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor << Msg 149849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor << FixItHint::CreateInsertion(EndLoc, Spelling); 1504b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor } else 1514b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor Diag(Tok, DiagID) << Msg; 1524b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor 1535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (SkipToTok != tok::unknown) 1545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SkipUntil(SkipToTok); 1555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return true; 1565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 1575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 1595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// Error recovery. 1605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 1615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// SkipUntil - Read tokens until we get to the specified token, then consume 163012cf464254804279efa84e21b4b493dde76c5f1Chris Lattner/// it (unless DontConsume is true). Because we cannot guarantee that the 1645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// token will ever occur, this skips to the next token, or to some likely 1655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// good stopping point. If StopAtSemi is true, skipping will stop at a ';' 1665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// character. 167a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump/// 1685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// If SkipUntil finds the specified token, it returns true, otherwise it 169a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump/// returns false. 1705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerbool Parser::SkipUntil(const tok::TokenKind *Toks, unsigned NumToks, 1715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool StopAtSemi, bool DontConsume) { 1725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // We always want this function to skip at least one token if the first token 1735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // isn't T and if not at EOF. 1745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool isFirstTokenSkipped = true; 1755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer while (1) { 1765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If we found one of the tokens, stop and return true. 1775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer for (unsigned i = 0; i != NumToks; ++i) { 178000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.is(Toks[i])) { 1795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (DontConsume) { 1805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Noop, don't consume the token. 1815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } else { 1825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeAnyToken(); 1835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return true; 1855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 187a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 1885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (Tok.getKind()) { 1895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::eof: 1905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Ran out of tokens. 1915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 192a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 1935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::l_paren: 1945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Recursively skip properly-nested parens. 1955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeParen(); 1965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SkipUntil(tok::r_paren, false); 1975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 1985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::l_square: 1995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Recursively skip properly-nested square brackets. 2005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeBracket(); 2015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SkipUntil(tok::r_square, false); 2025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 2035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::l_brace: 2045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Recursively skip properly-nested braces. 2055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeBrace(); 2065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SkipUntil(tok::r_brace, false); 2075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 208a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 2095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Okay, we found a ']' or '}' or ')', which we think should be balanced. 2105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Since the user wasn't looking for this token (if they were, it would 2115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // already be handled), this isn't balanced. If there is a LHS token at a 2125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // higher level, we will assume that this matches the unbalanced token 2135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // and return it. Otherwise, this is a spurious RHS token, which we skip. 2145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::r_paren: 2155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (ParenCount && !isFirstTokenSkipped) 2165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; // Matches something. 2175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeParen(); 2185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 2195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::r_square: 2205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (BracketCount && !isFirstTokenSkipped) 2215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; // Matches something. 2225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeBracket(); 2235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 2245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::r_brace: 2255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (BraceCount && !isFirstTokenSkipped) 2265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; // Matches something. 2275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeBrace(); 2285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 229a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 2305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::string_literal: 2315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::wide_string_literal: 2325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeStringToken(); 2335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 2345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::semi: 2355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (StopAtSemi) 2365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 2375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // FALL THROUGH. 2385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer default: 2395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Skip this token. 2405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeToken(); 2415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 2425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer isFirstTokenSkipped = false; 244a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump } 2455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 2465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 2485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// Scope manipulation 2495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 2505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// EnterScope - Start a new scope. 2525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencervoid Parser::EnterScope(unsigned ScopeFlags) { 2539e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner if (NumCachedScopes) { 2549e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner Scope *N = ScopeCache[--NumCachedScopes]; 2555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer N->Init(CurScope, ScopeFlags); 2565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer CurScope = N; 2575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } else { 2585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer CurScope = new Scope(CurScope, ScopeFlags); 2595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 260d6d4fcf7fd2cdb8c75e6feb5ab1a7132784e96e1Douglas Gregor CurScope->setNumErrorsAtStart(Diags.getNumErrors()); 2615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 2625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ExitScope - Pop a scope off the scope stack. 2645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencervoid Parser::ExitScope() { 2655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(CurScope && "Scope imbalance!"); 2665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 26790ae68aae98f12fe1950c63e2f6bd0fabce6cb1eChris Lattner // Inform the actions module that this scope is going away if there are any 26890ae68aae98f12fe1950c63e2f6bd0fabce6cb1eChris Lattner // decls in it. 26990ae68aae98f12fe1950c63e2f6bd0fabce6cb1eChris Lattner if (!CurScope->decl_empty()) 270b216c8861c60af9c56c900a485233255c4452df2Steve Naroff Actions.ActOnPopScope(Tok.getLocation(), CurScope); 271a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 2729e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner Scope *OldScope = CurScope; 2739e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner CurScope = OldScope->getParent(); 274a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 2759e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner if (NumCachedScopes == ScopeCacheSize) 2769e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner delete OldScope; 2775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer else 2789e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner ScopeCache[NumCachedScopes++] = OldScope; 2795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 2805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 2855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// C99 6.9: External Definitions. 2865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 2875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid SpencerParser::~Parser() { 2895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If we still have scopes active, delete the scope tree. 2905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer delete CurScope; 291a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 2925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Free the scope cache. 2939e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner for (unsigned i = 0, e = NumCachedScopes; i != e; ++i) 2949e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner delete ScopeCache[i]; 295fcdd8fe26de3eee44927600bf1853e21bd90dd84Daniel Dunbar 296fcdd8fe26de3eee44927600bf1853e21bd90dd84Daniel Dunbar // Remove the pragma handlers we installed. 2974726d03ab3abce41911c31d1354a18f1258cae4dTed Kremenek PP.RemovePragmaHandler(0, PackHandler.get()); 2984726d03ab3abce41911c31d1354a18f1258cae4dTed Kremenek PackHandler.reset(); 2994726d03ab3abce41911c31d1354a18f1258cae4dTed Kremenek PP.RemovePragmaHandler(0, UnusedHandler.get()); 3004726d03ab3abce41911c31d1354a18f1258cae4dTed Kremenek UnusedHandler.reset(); 3019991479ad5dde617168cc1e4b18425cdbbfd9fa9Eli Friedman PP.RemovePragmaHandler(0, WeakHandler.get()); 3029991479ad5dde617168cc1e4b18425cdbbfd9fa9Eli Friedman WeakHandler.reset(); 3035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 3045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// Initialize - Warm up the parser. 3065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 3075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencervoid Parser::Initialize() { 3085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Prime the lexer look-ahead. 3095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeToken(); 310a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 31131e057270232c1c37602579cb6461c2704175672Chris Lattner // Create the translation unit scope. Install it as the current scope. 3125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(CurScope == 0 && "A scope is already active?"); 31331e057270232c1c37602579cb6461c2704175672Chris Lattner EnterScope(Scope::DeclScope); 314b216c8861c60af9c56c900a485233255c4452df2Steve Naroff Actions.ActOnTranslationUnitScope(Tok.getLocation(), CurScope); 315a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 316000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.is(tok::eof) && 317f72617544287acf0281c3b1a733bcb22a02e6ca4Chris Lattner !getLang().CPlusPlus) // Empty source file is an extension in C 3185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(Tok, diag::ext_empty_source_file); 319a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 32034870da70fa42b0391b79627ebd0cfc6eb22213bChris Lattner // Initialization for Objective-C context sensitive keywords recognition. 321a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek // Referenced in Parser::ParseObjCTypeQualifierList. 32234870da70fa42b0391b79627ebd0cfc6eb22213bChris Lattner if (getLang().ObjC1) { 323a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek ObjCTypeQuals[objc_in] = &PP.getIdentifierTable().get("in"); 324a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek ObjCTypeQuals[objc_out] = &PP.getIdentifierTable().get("out"); 325a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek ObjCTypeQuals[objc_inout] = &PP.getIdentifierTable().get("inout"); 326a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek ObjCTypeQuals[objc_oneway] = &PP.getIdentifierTable().get("oneway"); 327a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek ObjCTypeQuals[objc_bycopy] = &PP.getIdentifierTable().get("bycopy"); 328a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek ObjCTypeQuals[objc_byref] = &PP.getIdentifierTable().get("byref"); 32934870da70fa42b0391b79627ebd0cfc6eb22213bChris Lattner } 330662e8b5647adbb1bc9eeceece7b64600cfa87471Daniel Dunbar 331662e8b5647adbb1bc9eeceece7b64600cfa87471Daniel Dunbar Ident_super = &PP.getIdentifierTable().get("super"); 33282287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson 33382287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson if (getLang().AltiVec) { 33482287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson Ident_vector = &PP.getIdentifierTable().get("vector"); 33582287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson Ident_pixel = &PP.getIdentifierTable().get("pixel"); 33682287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson } 3375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 3385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseTopLevelDecl - Parse one top-level declaration, return whatever the 3405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// action tells us to. This returns true if the EOF was encountered. 341682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattnerbool Parser::ParseTopLevelDecl(DeclGroupPtrTy &Result) { 342682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner Result = DeclGroupPtrTy(); 3439299f3fa85796613cc787a2062c9562d07c8613eChris Lattner if (Tok.is(tok::eof)) { 3449299f3fa85796613cc787a2062c9562d07c8613eChris Lattner Actions.ActOnEndOfTranslationUnit(); 3459299f3fa85796613cc787a2062c9562d07c8613eChris Lattner return true; 3469299f3fa85796613cc787a2062c9562d07c8613eChris Lattner } 347a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 348bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt CXX0XAttributeList Attr; 349bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt if (getLang().CPlusPlus0x && isCXX0XAttributeSpecifier()) 350bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt Attr = ParseCXX0XAttributes(); 351bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt Result = ParseExternalDeclaration(Attr); 3525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 3535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 3545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseTranslationUnit: 3565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// translation-unit: [C99 6.9] 357a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump/// external-declaration 358a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump/// translation-unit external-declaration 3595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencervoid Parser::ParseTranslationUnit() { 3608935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor Initialize(); 361a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 362682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner DeclGroupPtrTy Res; 36389307ffaf8acf4d6fdffd72b607ca4fbcfdffc9dSteve Naroff while (!ParseTopLevelDecl(Res)) 3645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /*parse them all*/; 3651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 36606f548596beef4c0a227a45cba996497f99566c0Chris Lattner ExitScope(); 36706f548596beef4c0a227a45cba996497f99566c0Chris Lattner assert(CurScope == 0 && "Scope imbalance!"); 3685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 3695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseExternalDeclaration: 37190b93d6f6961edd8f17e089253d655892adc1ef7Chris Lattner/// 372c19923dda3d28f67aab4726cd40bb07032758383Douglas Gregor/// external-declaration: [C99 6.9], declaration: [C++ dcl.dcl] 373c3018153a11afe91849748a93d920040a571b76cChris Lattner/// function-definition 374c3018153a11afe91849748a93d920040a571b76cChris Lattner/// declaration 375a1d71aea847a50b3acbd187d2ae9e5c1ead0f4e2Douglas Gregor/// [C++0x] empty-declaration 3765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [GNU] asm-definition 377c3018153a11afe91849748a93d920040a571b76cChris Lattner/// [GNU] __extension__ external-declaration 3785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [OBJC] objc-class-definition 3795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [OBJC] objc-class-declaration 3805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [OBJC] objc-alias-declaration 3815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [OBJC] objc-protocol-definition 3825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [OBJC] objc-method-definition 3835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [OBJC] @end 384c19923dda3d28f67aab4726cd40bb07032758383Douglas Gregor/// [C++] linkage-specification 3855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [GNU] asm-definition: 3865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// simple-asm-expr ';' 3875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 388a1d71aea847a50b3acbd187d2ae9e5c1ead0f4e2Douglas Gregor/// [C++0x] empty-declaration: 389a1d71aea847a50b3acbd187d2ae9e5c1ead0f4e2Douglas Gregor/// ';' 390a1d71aea847a50b3acbd187d2ae9e5c1ead0f4e2Douglas Gregor/// 39145f965581935791a018df829a14dff53c1dd8f47Douglas Gregor/// [C++0x/GNU] 'extern' 'template' declaration 392bbd37c62e34db3f5a95c899723484a76c71d7757Sean HuntParser::DeclGroupPtrTy Parser::ParseExternalDeclaration(CXX0XAttributeList Attr) { 393682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner DeclPtrTy SingleDecl; 3945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (Tok.getKind()) { 3955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::semi: 396a1d71aea847a50b3acbd187d2ae9e5c1ead0f4e2Douglas Gregor if (!getLang().CPlusPlus0x) 397a1d71aea847a50b3acbd187d2ae9e5c1ead0f4e2Douglas Gregor Diag(Tok, diag::ext_top_level_semi) 398849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor << FixItHint::CreateRemoval(Tok.getLocation()); 3991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeToken(); 4015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // TODO: Invoke action for top-level semicolon. 402682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return DeclGroupPtrTy(); 40390b93d6f6961edd8f17e089253d655892adc1ef7Chris Lattner case tok::r_brace: 40490b93d6f6961edd8f17e089253d655892adc1ef7Chris Lattner Diag(Tok, diag::err_expected_external_declaration); 40590b93d6f6961edd8f17e089253d655892adc1ef7Chris Lattner ConsumeBrace(); 406682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return DeclGroupPtrTy(); 40790b93d6f6961edd8f17e089253d655892adc1ef7Chris Lattner case tok::eof: 40890b93d6f6961edd8f17e089253d655892adc1ef7Chris Lattner Diag(Tok, diag::err_expected_external_declaration); 409682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return DeclGroupPtrTy(); 410c3018153a11afe91849748a93d920040a571b76cChris Lattner case tok::kw___extension__: { 411c46d1a1f8af67a87689d7db9eaf96027282ccaeaChris Lattner // __extension__ silences extension warnings in the subexpression. 412c46d1a1f8af67a87689d7db9eaf96027282ccaeaChris Lattner ExtensionRAIIObject O(Diags); // Use RAII to do this. 41339146d6497ad5e7ca8ef639221e7b3e15d07c888Chris Lattner ConsumeToken(); 414bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt return ParseExternalDeclaration(Attr); 415c3018153a11afe91849748a93d920040a571b76cChris Lattner } 416dfab6cb59a703f2ce4d58371652ce879f4c85a09Anders Carlsson case tok::kw_asm: { 417bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt if (Attr.HasAttr) 418bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt Diag(Attr.Range.getBegin(), diag::err_attributes_not_allowed) 419bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt << Attr.Range; 420bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt 421effa8d1c97b00a3f53e972b0e61d9aade5ea1c57Sebastian Redl OwningExprResult Result(ParseSimpleAsm()); 422a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 4233f9424f3206b834b5dd0e7c403348651ab6fafbbAnders Carlsson ExpectAndConsume(tok::semi, diag::err_expected_semi_after, 4243f9424f3206b834b5dd0e7c403348651ab6fafbbAnders Carlsson "top-level asm block"); 425dfab6cb59a703f2ce4d58371652ce879f4c85a09Anders Carlsson 426682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner if (Result.isInvalid()) 427682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return DeclGroupPtrTy(); 428682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner SingleDecl = Actions.ActOnFileScopeAsmDecl(Tok.getLocation(), move(Result)); 429682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner break; 430dfab6cb59a703f2ce4d58371652ce879f4c85a09Anders Carlsson } 4315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::at: 432682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner // @ is not a legal token unless objc is enabled, no need to check for ObjC. 433682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner /// FIXME: ParseObjCAtDirectives should return a DeclGroup for things like 434682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner /// @class foo, bar; 435682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner SingleDecl = ParseObjCAtDirectives(); 436682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner break; 4375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::minus: 4385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::plus: 439682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner if (!getLang().ObjC1) { 440682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner Diag(Tok, diag::err_expected_external_declaration); 441682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner ConsumeToken(); 442682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return DeclGroupPtrTy(); 443682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner } 444682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner SingleDecl = ParseObjCMethodDefinition(); 445682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner break; 446791215b7a24666912c0b71175d2ca5ba082f666eDouglas Gregor case tok::code_completion: 447b6ac2451bfed36206c5cec7217372c4299f67f2bDouglas Gregor Actions.CodeCompleteOrdinaryName(CurScope, 448b6ac2451bfed36206c5cec7217372c4299f67f2bDouglas Gregor ObjCImpDecl? Action::CCC_ObjCImplementation 449b6ac2451bfed36206c5cec7217372c4299f67f2bDouglas Gregor : Action::CCC_Namespace); 450791215b7a24666912c0b71175d2ca5ba082f666eDouglas Gregor ConsumeToken(); 451bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt return ParseExternalDeclaration(Attr); 452f780abc21c39cd4731b9e38f2d2d9f7d1510bd7bDouglas Gregor case tok::kw_using: 4538f08cb7d0b97786b17ef05e05caa55aad4d6bd39Chris Lattner case tok::kw_namespace: 4545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::kw_typedef: 455adcac8824a9cff13f1ef61a69e38c1041cba12eeDouglas Gregor case tok::kw_template: 456adcac8824a9cff13f1ef61a69e38c1041cba12eeDouglas Gregor case tok::kw_export: // As in 'export template' 457511d7aba3b12853fdb88729a0313b80a60eab8adAnders Carlsson case tok::kw_static_assert: 458bae35118fc5cea2da08567dbb9763af7f906dae2Chris Lattner // A function definition cannot start with a these keywords. 45997144fc41a9419bf6d74fc9450e8ef3f6e11f7e0Chris Lattner { 46097144fc41a9419bf6d74fc9450e8ef3f6e11f7e0Chris Lattner SourceLocation DeclEnd; 461bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt return ParseDeclaration(Declarator::FileContext, DeclEnd, Attr); 46297144fc41a9419bf6d74fc9450e8ef3f6e11f7e0Chris Lattner } 46345f965581935791a018df829a14dff53c1dd8f47Douglas Gregor case tok::kw_extern: 46445f965581935791a018df829a14dff53c1dd8f47Douglas Gregor if (getLang().CPlusPlus && NextToken().is(tok::kw_template)) { 46545f965581935791a018df829a14dff53c1dd8f47Douglas Gregor // Extern templates 46645f965581935791a018df829a14dff53c1dd8f47Douglas Gregor SourceLocation ExternLoc = ConsumeToken(); 46745f965581935791a018df829a14dff53c1dd8f47Douglas Gregor SourceLocation TemplateLoc = ConsumeToken(); 46845f965581935791a018df829a14dff53c1dd8f47Douglas Gregor SourceLocation DeclEnd; 46945f965581935791a018df829a14dff53c1dd8f47Douglas Gregor return Actions.ConvertDeclToDeclGroup( 47045f965581935791a018df829a14dff53c1dd8f47Douglas Gregor ParseExplicitInstantiation(ExternLoc, TemplateLoc, DeclEnd)); 47145f965581935791a018df829a14dff53c1dd8f47Douglas Gregor } 4721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 47345f965581935791a018df829a14dff53c1dd8f47Douglas Gregor // FIXME: Detect C++ linkage specifications here? 4741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 47545f965581935791a018df829a14dff53c1dd8f47Douglas Gregor // Fall through to handle other declarations or function definitions. 4761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer default: 4785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // We can't tell whether this is a function-definition or declaration yet. 479bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt return ParseDeclarationOrFunctionDefinition(Attr.AttrList); 4805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 4811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 482682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner // This routine returns a DeclGroup, if the thing we parsed only contains a 483682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner // single decl, convert it now. 484682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return Actions.ConvertDeclToDeclGroup(SingleDecl); 4855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 4865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 4871426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor/// \brief Determine whether the current token, if it occurs after a 4881426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor/// declarator, continues a declaration or declaration list. 4891426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregorbool Parser::isDeclarationAfterDeclarator() { 4901426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor return Tok.is(tok::equal) || // int X()= -> not a function def 4911426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor Tok.is(tok::comma) || // int X(), -> not a function def 4921426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor Tok.is(tok::semi) || // int X(); -> not a function def 4931426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor Tok.is(tok::kw_asm) || // int X() __asm__ -> not a function def 4941426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor Tok.is(tok::kw___attribute) || // int X() __attr__ -> not a function def 4951426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor (getLang().CPlusPlus && 4961426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor Tok.is(tok::l_paren)); // int X(0) -> not a function def [C++] 4971426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor} 4981426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor 4991426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor/// \brief Determine whether the current token, if it occurs after a 5001426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor/// declarator, indicates the start of a function definition. 5011426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregorbool Parser::isStartOfFunctionDefinition() { 5025d1c6198cfe55f8de025902c621c0721b640ff60Chris Lattner if (Tok.is(tok::l_brace)) // int X() {} 5035d1c6198cfe55f8de025902c621c0721b640ff60Chris Lattner return true; 5045d1c6198cfe55f8de025902c621c0721b640ff60Chris Lattner 5055d1c6198cfe55f8de025902c621c0721b640ff60Chris Lattner if (!getLang().CPlusPlus) 5065d1c6198cfe55f8de025902c621c0721b640ff60Chris Lattner return isDeclarationSpecifier(); // int X(f) int f; {} 5075d1c6198cfe55f8de025902c621c0721b640ff60Chris Lattner return Tok.is(tok::colon) || // X() : Base() {} (used for ctors) 5085d1c6198cfe55f8de025902c621c0721b640ff60Chris Lattner Tok.is(tok::kw_try); // X() try { ... } 5091426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor} 5101426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor 5115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseDeclarationOrFunctionDefinition - Parse either a function-definition or 5125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// a declaration. We can't tell which we have until we read up to the 513c4b4e7b8f6ca9b036824e048af49cd2a52b57cdfDouglas Gregor/// compound-statement in function-definition. TemplateParams, if 514c4b4e7b8f6ca9b036824e048af49cd2a52b57cdfDouglas Gregor/// non-NULL, provides the template parameters when we're parsing a 5151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// C++ template-declaration. 5165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 5175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// function-definition: [C99 6.9.1] 518a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner/// decl-specs declarator declaration-list[opt] compound-statement 519a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner/// [C90] function-definition: [C99 6.7.1] - implicit int result 520a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump/// [C90] decl-specs[opt] declarator declaration-list[opt] compound-statement 521a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner/// 5225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// declaration: [C99 6.7] 523697e15f2a028f8997cccb24ecd05099988cfb1a9Chris Lattner/// declaration-specifiers init-declarator-list[opt] ';' 524697e15f2a028f8997cccb24ecd05099988cfb1a9Chris Lattner/// [!C99] init-declarator-list ';' [TODO: warn in c99 mode] 5255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [OMP] threadprivate-directive [TODO] 5265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 527682bf92db408a6cbc3d37b5496a99b6ef85041ecChris LattnerParser::DeclGroupPtrTy 5283acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz JahanianParser::ParseDeclarationOrFunctionDefinition(ParsingDeclSpec &DS, 5293acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz Jahanian AttributeList *Attr, 530bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt AccessSpecifier AS) { 5315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Parse the common declaration-specifiers piece. 532bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt if (Attr) 533bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt DS.AddAttributes(Attr); 534bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt 5350efc2c1716be4f1c5f1343cad3b047e74861f030Douglas Gregor ParseDeclarationSpecifiers(DS, ParsedTemplateInfo(), AS, DSC_top_level); 536a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 5375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // C99 6.7.2.3p6: Handle "struct-or-union identifier;", "enum { X };" 5385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // declaration-specifiers init-declarator-list[opt] ';' 539000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.is(tok::semi)) { 5405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeToken(); 541682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner DeclPtrTy TheDecl = Actions.ParsedFreeStandingDeclSpec(CurScope, DS); 54254abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall DS.complete(TheDecl); 543682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return Actions.ConvertDeclToDeclGroup(TheDecl); 5445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 545a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 546246e70f69cb8aeb67225c54690f1c6b25abd5a86Daniel Dunbar // ObjC2 allows prefix attributes on class interfaces and protocols. 547246e70f69cb8aeb67225c54690f1c6b25abd5a86Daniel Dunbar // FIXME: This still needs better diagnostics. We should only accept 548246e70f69cb8aeb67225c54690f1c6b25abd5a86Daniel Dunbar // attributes here, no types, etc. 549000732226610650837478cba97843d19b75f648eChris Lattner if (getLang().ObjC2 && Tok.is(tok::at)) { 550dac269b65eed82182fc3e96566dedd6562dfe11eSteve Naroff SourceLocation AtLoc = ConsumeToken(); // the "@" 5511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (!Tok.isObjCAtKeyword(tok::objc_interface) && 552246e70f69cb8aeb67225c54690f1c6b25abd5a86Daniel Dunbar !Tok.isObjCAtKeyword(tok::objc_protocol)) { 553246e70f69cb8aeb67225c54690f1c6b25abd5a86Daniel Dunbar Diag(Tok, diag::err_objc_unexpected_attr); 554cb53b361bce341c8591333c6997f62e480acc0b4Chris Lattner SkipUntil(tok::semi); // FIXME: better skip? 555682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return DeclGroupPtrTy(); 556cb53b361bce341c8591333c6997f62e480acc0b4Chris Lattner } 557d8ac05753dc4506224d445ff98399c01da3136e5John McCall 55854abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall DS.abort(); 55954abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall 5600de2ae28c603322f05e2d9200c7d457c8b928983Fariborz Jahanian const char *PrevSpec = 0; 561fec54013fcd0eb72642741584ca04c1bc292bef8John McCall unsigned DiagID; 562fec54013fcd0eb72642741584ca04c1bc292bef8John McCall if (DS.SetTypeSpecType(DeclSpec::TST_unspecified, AtLoc, PrevSpec, DiagID)) 563fec54013fcd0eb72642741584ca04c1bc292bef8John McCall Diag(AtLoc, DiagID) << PrevSpec; 5641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 565682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner DeclPtrTy TheDecl; 566246e70f69cb8aeb67225c54690f1c6b25abd5a86Daniel Dunbar if (Tok.isObjCAtKeyword(tok::objc_protocol)) 567682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner TheDecl = ParseObjCAtProtocolDeclaration(AtLoc, DS.getAttributes()); 568682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner else 569682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner TheDecl = ParseObjCAtInterfaceDeclaration(AtLoc, DS.getAttributes()); 570682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return Actions.ConvertDeclToDeclGroup(TheDecl); 571dac269b65eed82182fc3e96566dedd6562dfe11eSteve Naroff } 572a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 573c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner // If the declspec consisted only of 'extern' and we have a string 574c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner // literal following it, this must be a C++ linkage specifier like 575c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner // 'extern "C"'. 5763c6f6a7a1bb9969112617a26d2333bab2f6efd65Chris Lattner if (Tok.is(tok::string_literal) && getLang().CPlusPlus && 577c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner DS.getStorageClassSpec() == DeclSpec::SCS_extern && 578682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner DS.getParsedSpecifiers() == DeclSpec::PQ_StorageClassSpecifier) { 5793acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz Jahanian DeclPtrTy TheDecl = ParseLinkage(DS, Declarator::FileContext); 580682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return Actions.ConvertDeclToDeclGroup(TheDecl); 581682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner } 582c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner 583d8ac05753dc4506224d445ff98399c01da3136e5John McCall return ParseDeclGroup(DS, Declarator::FileContext, true); 5845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 5855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 5863acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz JahanianParser::DeclGroupPtrTy 5873acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz JahanianParser::ParseDeclarationOrFunctionDefinition(AttributeList *Attr, 5883acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz Jahanian AccessSpecifier AS) { 5893acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz Jahanian ParsingDeclSpec DS(*this); 5903acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz Jahanian return ParseDeclarationOrFunctionDefinition(DS, Attr, AS); 5913acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz Jahanian} 5923acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz Jahanian 5935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseFunctionDefinition - We parsed and verified that the specified 5945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// Declarator is well formed. If this is a K&R-style function, read the 5955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// parameters declaration-list, then start the compound-statement. 5965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 597a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner/// function-definition: [C99 6.9.1] 598a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner/// decl-specs declarator declaration-list[opt] compound-statement 599a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner/// [C90] function-definition: [C99 6.7.1] - implicit int result 600a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump/// [C90] decl-specs[opt] declarator declaration-list[opt] compound-statement 6017ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor/// [C++] function-definition: [C++ 8.4] 60223c4b1883b13dc17484b7214091b73f3ba29096eChris Lattner/// decl-specifier-seq[opt] declarator ctor-initializer[opt] 60323c4b1883b13dc17484b7214091b73f3ba29096eChris Lattner/// function-body 6047ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor/// [C++] function-definition: [C++ 8.4] 605d3a413d3b8eb39bcee5944bc545d9997c1abe492Sebastian Redl/// decl-specifier-seq[opt] declarator function-try-block 6065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 60754abf7d4fa3123b8324c09d2a4dfb789fd818403John McCallParser::DeclPtrTy Parser::ParseFunctionDefinition(ParsingDeclarator &D, 60852591bf224b2c43e2b00e265bb8599a620081925Douglas Gregor const ParsedTemplateInfo &TemplateInfo) { 6095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const DeclaratorChunk &FnTypeInfo = D.getTypeObject(0); 6105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(FnTypeInfo.Kind == DeclaratorChunk::Function && 6115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer "This isn't a function declarator!"); 6125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const DeclaratorChunk::FunctionTypeInfo &FTI = FnTypeInfo.Fun; 613a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 614a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner // If this is C90 and the declspecs were completely missing, fudge in an 615a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner // implicit int. We do this here because this is the only place where 616a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner // declaration-specifiers are completely optional in the grammar. 6172a327d11a07dfbdf20910cebbae38910eda111fdChris Lattner if (getLang().ImplicitInt && D.getDeclSpec().isEmpty()) { 618a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner const char *PrevSpec; 619fec54013fcd0eb72642741584ca04c1bc292bef8John McCall unsigned DiagID; 62031c286803c60c59d314525e047d0e72f9a1cb55bChris Lattner D.getMutableDeclSpec().SetTypeSpecType(DeclSpec::TST_int, 62131c286803c60c59d314525e047d0e72f9a1cb55bChris Lattner D.getIdentifierLoc(), 622fec54013fcd0eb72642741584ca04c1bc292bef8John McCall PrevSpec, DiagID); 623ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl D.SetRangeBegin(D.getDeclSpec().getSourceRange().getBegin()); 624a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner } 625a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 6265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If this declaration was formed with a K&R-style identifier list for the 6275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // arguments, parse declarations for all of the args next. 6285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // int foo(a,b) int a; float b; {} 6295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (!FTI.hasPrototype && FTI.NumArgs != 0) 6305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ParseKNRParamDeclarations(D); 6315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6327ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor // We should have either an opening brace or, in a C++ constructor, 6337ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor // we may have a colon. 634d3a413d3b8eb39bcee5944bc545d9997c1abe492Sebastian Redl if (Tok.isNot(tok::l_brace) && Tok.isNot(tok::colon) && 635d3a413d3b8eb39bcee5944bc545d9997c1abe492Sebastian Redl Tok.isNot(tok::kw_try)) { 6365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(Tok, diag::err_expected_fn_body); 6375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Skip over garbage, until we get to '{'. Don't eat the '{'. 6395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SkipUntil(tok::l_brace, true, true); 640a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 6415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If we didn't find the '{', bail out. 642000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.isNot(tok::l_brace)) 643b28317a8e5e0e2953d1e5406d753d6c3c7f1e7d2Chris Lattner return DeclPtrTy(); 6445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 645a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 646b652cea7d7b70ebe3744fb6d72c9ad9cf3c95429Chris Lattner // Enter a scope for the function body. 6478935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor ParseScope BodyScope(this, Scope::FnScope|Scope::DeclScope); 648a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 649b652cea7d7b70ebe3744fb6d72c9ad9cf3c95429Chris Lattner // Tell the actions module that we have entered a function definition with the 650b652cea7d7b70ebe3744fb6d72c9ad9cf3c95429Chris Lattner // specified Declarator for the function. 6511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump DeclPtrTy Res = TemplateInfo.TemplateParams? 65252591bf224b2c43e2b00e265bb8599a620081925Douglas Gregor Actions.ActOnStartOfFunctionTemplateDef(CurScope, 65352591bf224b2c43e2b00e265bb8599a620081925Douglas Gregor Action::MultiTemplateParamsArg(Actions, 65452591bf224b2c43e2b00e265bb8599a620081925Douglas Gregor TemplateInfo.TemplateParams->data(), 65552591bf224b2c43e2b00e265bb8599a620081925Douglas Gregor TemplateInfo.TemplateParams->size()), 65652591bf224b2c43e2b00e265bb8599a620081925Douglas Gregor D) 65752591bf224b2c43e2b00e265bb8599a620081925Douglas Gregor : Actions.ActOnStartOfFunctionDef(CurScope, D); 658a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 65954abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall // Break out of the ParsingDeclarator context before we parse the body. 66054abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall D.complete(Res); 66154abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall 66254abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall // Break out of the ParsingDeclSpec context, too. This const_cast is 66354abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall // safe because we're always the sole owner. 66454abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall D.getMutableDeclSpec().abort(); 66554abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall 666d3a413d3b8eb39bcee5944bc545d9997c1abe492Sebastian Redl if (Tok.is(tok::kw_try)) 667d3a413d3b8eb39bcee5944bc545d9997c1abe492Sebastian Redl return ParseFunctionTryBlock(Res); 668d3a413d3b8eb39bcee5944bc545d9997c1abe492Sebastian Redl 6697ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor // If we have a colon, then we're probably parsing a C++ 6707ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor // ctor-initializer. 671d6ca8da0f5a4115813055729faaa5128e994806dJohn McCall if (Tok.is(tok::colon)) { 6727ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor ParseConstructorInitializer(Res); 673d6ca8da0f5a4115813055729faaa5128e994806dJohn McCall 674d6ca8da0f5a4115813055729faaa5128e994806dJohn McCall // Recover from error. 675d6ca8da0f5a4115813055729faaa5128e994806dJohn McCall if (!Tok.is(tok::l_brace)) { 676d6ca8da0f5a4115813055729faaa5128e994806dJohn McCall Actions.ActOnFinishFunctionBody(Res, Action::StmtArg(Actions)); 677d6ca8da0f5a4115813055729faaa5128e994806dJohn McCall return Res; 678d6ca8da0f5a4115813055729faaa5128e994806dJohn McCall } 679d6ca8da0f5a4115813055729faaa5128e994806dJohn McCall } else 680393612e6c7727f1fee50039254d9f434364cc0b2Fariborz Jahanian Actions.ActOnDefaultCtorInitializers(Res); 6817ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor 68240e9bc84a2ab49fc33c2b1a95c6674ab2b820e9eChris Lattner return ParseFunctionStatementBody(Res); 6835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 6845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseKNRParamDeclarations - Parse 'declaration-list[opt]' which provides 6865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// types for a function with a K&R-style identifier list for arguments. 6875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencervoid Parser::ParseKNRParamDeclarations(Declarator &D) { 6885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // We know that the top-level of this declarator is a function. 6895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DeclaratorChunk::FunctionTypeInfo &FTI = D.getTypeObject(0).Fun; 6905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 69104421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner // Enter function-declaration scope, limiting any declarators to the 69204421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner // function prototype scope, including parameter declarators. 6933218c4bb3b5d7250f12420de6db7ef3e3f805a75Douglas Gregor ParseScope PrototypeScope(this, Scope::FunctionPrototypeScope|Scope::DeclScope); 69404421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner 6955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Read all the argument declarations. 6965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer while (isDeclarationSpecifier()) { 6975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation DSStart = Tok.getLocation(); 698a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 6995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Parse the common declaration-specifiers piece. 7005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DeclSpec DS; 7015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ParseDeclarationSpecifiers(DS); 702a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 7035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // C99 6.9.1p6: 'each declaration in the declaration list shall have at 7045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // least one declarator'. 7055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // NOTE: GCC just makes this an ext-warn. It's not clear what it does with 7065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // the declarations though. It's trivial to ignore them, really hard to do 7075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // anything else with them. 708000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.is(tok::semi)) { 7095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(DSStart, diag::err_declaration_does_not_declare_param); 7105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeToken(); 7115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer continue; 7125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 713a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 7145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // C99 6.9.1p6: Declarations shall contain no storage-class specifiers other 7155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // than register. 7165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (DS.getStorageClassSpec() != DeclSpec::SCS_unspecified && 7175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DS.getStorageClassSpec() != DeclSpec::SCS_register) { 7185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(DS.getStorageClassSpecLoc(), 7195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer diag::err_invalid_storage_class_in_func_decl); 7205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DS.ClearStorageClassSpecs(); 7215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (DS.isThreadSpecified()) { 7235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(DS.getThreadSpecLoc(), 7245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer diag::err_invalid_storage_class_in_func_decl); 7255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DS.ClearStorageClassSpecs(); 7265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 727a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 7285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Parse the first declarator attached to this declspec. 7295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Declarator ParmDeclarator(DS, Declarator::KNRTypeListContext); 7305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ParseDeclarator(ParmDeclarator); 7315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Handle the full declarator list. 7335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer while (1) { 7345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If attributes are present, parse them. 73533efe2f088ae40b5129fe4ab021912e80129e155Richard Pennington if (Tok.is(tok::kw___attribute)) { 73633efe2f088ae40b5129fe4ab021912e80129e155Richard Pennington SourceLocation Loc; 73733efe2f088ae40b5129fe4ab021912e80129e155Richard Pennington AttributeList *AttrList = ParseGNUAttributes(&Loc); 73833efe2f088ae40b5129fe4ab021912e80129e155Richard Pennington ParmDeclarator.AddAttributes(AttrList, Loc); 73933efe2f088ae40b5129fe4ab021912e80129e155Richard Pennington } 740a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 7415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Ask the actions module to compute the type for this declarator. 742b28317a8e5e0e2953d1e5406d753d6c3c7f1e7d2Chris Lattner Action::DeclPtrTy Param = 74304421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner Actions.ActOnParamDeclarator(CurScope, ParmDeclarator); 7442bd42fadafddc8acf744b57a970bdc96a077c617Steve Naroff 745a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump if (Param && 7465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // A missing identifier has already been diagnosed. 7475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ParmDeclarator.getIdentifier()) { 7485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Scan the argument list looking for the correct param to apply this 7505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // type. 7515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer for (unsigned i = 0; ; ++i) { 7525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // C99 6.9.1p6: those declarators shall declare only identifiers from 7535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // the identifier list. 7545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (i == FTI.NumArgs) { 7551ab3b96de160e4fbffec2a776e284a48a3bb543dChris Lattner Diag(ParmDeclarator.getIdentifierLoc(), diag::err_no_matching_param) 7566898e33d0b28346a4dbe9a666e0e4188fea80460Chris Lattner << ParmDeclarator.getIdentifier(); 7575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 7585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 759a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 7605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (FTI.ArgInfo[i].Ident == ParmDeclarator.getIdentifier()) { 7615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Reject redefinitions of parameters. 76204421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner if (FTI.ArgInfo[i].Param) { 7635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(ParmDeclarator.getIdentifierLoc(), 7641ab3b96de160e4fbffec2a776e284a48a3bb543dChris Lattner diag::err_param_redefinition) 7656898e33d0b28346a4dbe9a666e0e4188fea80460Chris Lattner << ParmDeclarator.getIdentifier(); 7665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } else { 76704421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner FTI.ArgInfo[i].Param = Param; 7685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 7705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If we don't have a comma, it is either the end of the list (a ';') or 7755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // an error, bail out. 776000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.isNot(tok::comma)) 7775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 778a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 7795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Consume the comma. 7805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeToken(); 781a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 7825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Parse the next declarator. 7835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ParmDeclarator.clear(); 7845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ParseDeclarator(ParmDeclarator); 7855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 786a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 787000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.is(tok::semi)) { 7885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeToken(); 7895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } else { 7905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(Tok, diag::err_parse_error); 7915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Skip to end of block or statement 7925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SkipUntil(tok::semi, true); 793000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.is(tok::semi)) 7945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeToken(); 7955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 797a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 7985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // The actions module must verify that all arguments were declared. 799a3a835149ed4b183e3b009a1f94a6123779d696bDouglas Gregor Actions.ActOnFinishKNRParamDeclarations(CurScope, D, Tok.getLocation()); 8005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 8015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 8025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 8035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseAsmStringLiteral - This is just a normal string-literal, but is not 8045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// allowed to be a wide string, and is not subject to character translation. 8055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 8065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [GNU] asm-string-literal: 8075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// string-literal 8085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 809effa8d1c97b00a3f53e972b0e61d9aade5ea1c57Sebastian RedlParser::OwningExprResult Parser::ParseAsmStringLiteral() { 8105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (!isTokenStringLiteral()) { 8115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(Tok, diag::err_expected_string_literal); 81261364dddc33383e62cfe3b841dbc0f471280d95bSebastian Redl return ExprError(); 8135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 814a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 81520df9b7ab9388b2a488c5b1293cd196b1e073b4eSebastian Redl OwningExprResult Res(ParseStringLiteralExpression()); 816effa8d1c97b00a3f53e972b0e61d9aade5ea1c57Sebastian Redl if (Res.isInvalid()) return move(Res); 817a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 8185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // TODO: Diagnose: wide string literal in 'asm' 819a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 820effa8d1c97b00a3f53e972b0e61d9aade5ea1c57Sebastian Redl return move(Res); 8215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 8225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 8235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseSimpleAsm 8245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 8255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [GNU] simple-asm-expr: 8265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 'asm' '(' asm-string-literal ')' 8275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 828ab197baec16bacade82325fb274cf6b992ac5d8aSebastian RedlParser::OwningExprResult Parser::ParseSimpleAsm(SourceLocation *EndLoc) { 829000732226610650837478cba97843d19b75f648eChris Lattner assert(Tok.is(tok::kw_asm) && "Not an asm!"); 830dfab6cb59a703f2ce4d58371652ce879f4c85a09Anders Carlsson SourceLocation Loc = ConsumeToken(); 831a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 8327a6ae743b2ecfdfadadf7df53b569a9a3871a8fdJohn McCall if (Tok.is(tok::kw_volatile)) { 833841d5e607f81bf5627e47d0c62ead29f28b5b0c2John McCall // Remove from the end of 'asm' to the end of 'volatile'. 834841d5e607f81bf5627e47d0c62ead29f28b5b0c2John McCall SourceRange RemovalRange(PP.getLocForEndOfToken(Loc), 835841d5e607f81bf5627e47d0c62ead29f28b5b0c2John McCall PP.getLocForEndOfToken(Tok.getLocation())); 836841d5e607f81bf5627e47d0c62ead29f28b5b0c2John McCall 837841d5e607f81bf5627e47d0c62ead29f28b5b0c2John McCall Diag(Tok, diag::warn_file_asm_volatile) 838849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor << FixItHint::CreateRemoval(RemovalRange); 8397a6ae743b2ecfdfadadf7df53b569a9a3871a8fdJohn McCall ConsumeToken(); 8407a6ae743b2ecfdfadadf7df53b569a9a3871a8fdJohn McCall } 8417a6ae743b2ecfdfadadf7df53b569a9a3871a8fdJohn McCall 842000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.isNot(tok::l_paren)) { 8431ab3b96de160e4fbffec2a776e284a48a3bb543dChris Lattner Diag(Tok, diag::err_expected_lparen_after) << "asm"; 84461364dddc33383e62cfe3b841dbc0f471280d95bSebastian Redl return ExprError(); 8455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 846a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 847ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl Loc = ConsumeParen(); 848a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 849effa8d1c97b00a3f53e972b0e61d9aade5ea1c57Sebastian Redl OwningExprResult Result(ParseAsmStringLiteral()); 850a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 851ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl if (Result.isInvalid()) { 852ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl SkipUntil(tok::r_paren, true, true); 853ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl if (EndLoc) 854ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl *EndLoc = Tok.getLocation(); 855ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl ConsumeAnyToken(); 856ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl } else { 857ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl Loc = MatchRHSPunctuation(tok::r_paren, Loc); 858ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl if (EndLoc) 859ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl *EndLoc = Loc; 860ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl } 861a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 862effa8d1c97b00a3f53e972b0e61d9aade5ea1c57Sebastian Redl return move(Result); 8635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 8645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 865eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// TryAnnotateTypeOrScopeToken - If the current token position is on a 866eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// typename (possibly qualified in C++) or a C++ scope specifier not followed 867eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// by a typename, TryAnnotateTypeOrScopeToken will replace one or more tokens 868eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// with a single annotation token representing the typename or C++ scope 869eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// respectively. 870eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// This simplifies handling of C++ scope specifiers and allows efficient 871eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// backtracking without the need to re-parse and resolve nested-names and 872eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// typenames. 87344802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// It will mainly be called when we expect to treat identifiers as typenames 87444802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// (if they are typenames). For example, in C we do not expect identifiers 87544802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// inside expressions to be treated as typenames so it will not be called 87644802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// for expressions in C. 87744802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// The benefit for C/ObjC is that a typename will be annotated and 878b43a50ff1b0b171ece84425b0ad83a9a31f038faSteve Naroff/// Actions.getTypeName will not be needed to be called again (e.g. getTypeName 87944802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// will not be called twice, once to check whether we have a declaration 88044802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// specifier, and another one to get the actual type inside 88144802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// ParseDeclarationSpecifiers). 882a7bc7c880f86bc180684ef032d06df51bcae7a23Chris Lattner/// 8839ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall/// This returns true if an error occurred. 8841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// 88555a7cefc846765ac7d142a63f773747a20518d71Chris Lattner/// Note that this routine emits an error if you call it with ::new or ::delete 88655a7cefc846765ac7d142a63f773747a20518d71Chris Lattner/// as the current tokens, so only call it in contexts where these are invalid. 887495c35d291da48c4f5655bbb54d15128ddde0d4dDouglas Gregorbool Parser::TryAnnotateTypeOrScopeToken(bool EnteringContext) { 8881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert((Tok.is(tok::identifier) || Tok.is(tok::coloncolon) 889ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall || Tok.is(tok::kw_typename) || Tok.is(tok::annot_cxxscope)) && 8907452c6fc567ea1799f617395d0fa4c7ed075e5d9Chris Lattner "Cannot be a type or scope token!"); 8911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 892d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor if (Tok.is(tok::kw_typename)) { 893d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor // Parse a C++ typename-specifier, e.g., "typename T::type". 894d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor // 895d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor // typename-specifier: 896d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor // 'typename' '::' [opt] nested-name-specifier identifier 8971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // 'typename' '::' [opt] nested-name-specifier template [opt] 8981734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor // simple-template-id 899d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor SourceLocation TypenameLoc = ConsumeToken(); 900d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor CXXScopeSpec SS; 9019ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall if (ParseOptionalCXXScopeSpecifier(SS, /*ObjectType=*/0, false)) 9029ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return true; 9039ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall if (!SS.isSet()) { 904d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor Diag(Tok.getLocation(), diag::err_expected_qualified_after_typename); 9059ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return true; 906d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor } 907d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor 908d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor TypeResult Ty; 909d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor if (Tok.is(tok::identifier)) { 910d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor // FIXME: check whether the next token is '<', first! 9111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Ty = Actions.ActOnTypenameType(TypenameLoc, SS, *Tok.getIdentifierInfo(), 912d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor Tok.getLocation()); 9131734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor } else if (Tok.is(tok::annot_template_id)) { 9141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump TemplateIdAnnotation *TemplateId 9151734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor = static_cast<TemplateIdAnnotation *>(Tok.getAnnotationValue()); 9161734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor if (TemplateId->Kind == TNK_Function_template) { 9171734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor Diag(Tok, diag::err_typename_refers_to_non_type_template) 9181734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor << Tok.getAnnotationRange(); 9199ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return true; 9201734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor } 921d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor 92231a19b6989bbf326d2de5ae12e712e2a65ca9c34Douglas Gregor AnnotateTemplateIdTokenAsType(0); 9231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert(Tok.is(tok::annot_typename) && 9241734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor "AnnotateTemplateIdTokenAsType isn't working properly"); 92531a19b6989bbf326d2de5ae12e712e2a65ca9c34Douglas Gregor if (Tok.getAnnotationValue()) 92631a19b6989bbf326d2de5ae12e712e2a65ca9c34Douglas Gregor Ty = Actions.ActOnTypenameType(TypenameLoc, SS, SourceLocation(), 92731a19b6989bbf326d2de5ae12e712e2a65ca9c34Douglas Gregor Tok.getAnnotationValue()); 92831a19b6989bbf326d2de5ae12e712e2a65ca9c34Douglas Gregor else 92931a19b6989bbf326d2de5ae12e712e2a65ca9c34Douglas Gregor Ty = true; 9301734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor } else { 9311734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor Diag(Tok, diag::err_expected_type_name_after_typename) 9321734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor << SS.getRange(); 9339ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return true; 9341734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor } 9351734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor 93639d67117f896c6e2faa727671ef64b3c04b0e3feSebastian Redl SourceLocation EndLoc = Tok.getLastLoc(); 9371734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor Tok.setKind(tok::annot_typename); 93831a19b6989bbf326d2de5ae12e712e2a65ca9c34Douglas Gregor Tok.setAnnotationValue(Ty.isInvalid()? 0 : Ty.get()); 93939d67117f896c6e2faa727671ef64b3c04b0e3feSebastian Redl Tok.setAnnotationEndLoc(EndLoc); 9401734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor Tok.setLocation(TypenameLoc); 9411734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor PP.AnnotateCachedTokens(Tok); 9429ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return false; 943d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor } 944d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor 945ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall // Remembers whether the token was originally a scope annotation. 946ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall bool wasScopeAnnotation = Tok.is(tok::annot_cxxscope); 947ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall 948eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis CXXScopeSpec SS; 9494bdd91c09fd59e0c154d759288beff300e31e1d0Argyrios Kyrtzidis if (getLang().CPlusPlus) 9509ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall if (ParseOptionalCXXScopeSpecifier(SS, /*ObjectType=*/0, EnteringContext)) 9519ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return true; 952eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis 953eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis if (Tok.is(tok::identifier)) { 954608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner // Determine whether the identifier is a type name. 9551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (TypeTy *Ty = Actions.getTypeName(*Tok.getIdentifierInfo(), 956b696ea3a0693798daeafd896d77f0b8f1fec3cc5Douglas Gregor Tok.getLocation(), CurScope, &SS)) { 957608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner // This is a typename. Replace the current token in-place with an 958608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner // annotation type token. 959b31757b68afe06ba442a05775d08fe7aa0f6f889Chris Lattner Tok.setKind(tok::annot_typename); 960608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner Tok.setAnnotationValue(Ty); 961608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner Tok.setAnnotationEndLoc(Tok.getLocation()); 962608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner if (SS.isNotEmpty()) // it was a C++ qualified type name. 963608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner Tok.setLocation(SS.getBeginLoc()); 9641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 965608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner // In case the tokens were cached, have Preprocessor replace 966608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner // them with the annotation token. 967608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner PP.AnnotateCachedTokens(Tok); 9689ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return false; 9691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 97039a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor 97139a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor if (!getLang().CPlusPlus) { 972608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner // If we're in C, we can't have :: tokens at all (the lexer won't return 973608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner // them). If the identifier is not a type, then it can't be scope either, 9741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // just early exit. 975608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner return false; 976eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis } 9771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 97839a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // If this is a template-id, annotate with a template-id or type token. 97955f6b14230c94272efbbcdd89a92224c8db9f225Douglas Gregor if (NextToken().is(tok::less)) { 9807532dc66648cfe7432c9fe66dec5225f0ab301c6Douglas Gregor TemplateTy Template; 981014e88d94ff83e3aad4e33b16413a2d1817ec208Douglas Gregor UnqualifiedId TemplateName; 982014e88d94ff83e3aad4e33b16413a2d1817ec208Douglas Gregor TemplateName.setIdentifier(Tok.getIdentifierInfo(), Tok.getLocation()); 9831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (TemplateNameKind TNK 984014e88d94ff83e3aad4e33b16413a2d1817ec208Douglas Gregor = Actions.isTemplateName(CurScope, SS, TemplateName, 9851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /*ObjectType=*/0, EnteringContext, 986ca1bdd7c269a2390d43c040a60511edd017ee130Douglas Gregor Template)) { 987ca1bdd7c269a2390d43c040a60511edd017ee130Douglas Gregor // Consume the identifier. 988ca1bdd7c269a2390d43c040a60511edd017ee130Douglas Gregor ConsumeToken(); 989ca1bdd7c269a2390d43c040a60511edd017ee130Douglas Gregor if (AnnotateTemplateIdToken(Template, TNK, &SS, TemplateName)) { 990c8e27cc402043ec86c1698c09e4ee9e415b16207Chris Lattner // If an unrecoverable error occurred, we need to return true here, 991c8e27cc402043ec86c1698c09e4ee9e415b16207Chris Lattner // because the token stream is in a damaged state. We may not return 992c8e27cc402043ec86c1698c09e4ee9e415b16207Chris Lattner // a valid identifier. 9939ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return true; 994c8e27cc402043ec86c1698c09e4ee9e415b16207Chris Lattner } 995ca1bdd7c269a2390d43c040a60511edd017ee130Douglas Gregor } 99655f6b14230c94272efbbcdd89a92224c8db9f225Douglas Gregor } 997d6fb7ef028d9aa0b3e8943b7bc049c524437b407Douglas Gregor 99839a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // The current token, which is either an identifier or a 99939a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // template-id, is not part of the annotation. Fall through to 100039a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // push that token back into the stream and complete the C++ scope 100139a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // specifier annotation. 10021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 1003eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis 100439a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor if (Tok.is(tok::annot_template_id)) { 10051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump TemplateIdAnnotation *TemplateId 100639a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor = static_cast<TemplateIdAnnotation *>(Tok.getAnnotationValue()); 1007c45c232440dfafedca1a3773b904fb42609b1b19Douglas Gregor if (TemplateId->Kind == TNK_Type_template) { 100839a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // A template-id that refers to a type was parsed into a 100939a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // template-id annotation in a context where we weren't allowed 101039a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // to produce a type annotation token. Update the template-id 101139a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // annotation token to a type annotation token now. 101231a19b6989bbf326d2de5ae12e712e2a65ca9c34Douglas Gregor AnnotateTemplateIdTokenAsType(&SS); 10139ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return false; 101439a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor } 101539a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor } 1016d6fb7ef028d9aa0b3e8943b7bc049c524437b407Douglas Gregor 10176ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner if (SS.isEmpty()) 10189ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return false; 10191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10206ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner // A C++ scope specifier that isn't followed by a typename. 10216ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner // Push the current token back into the token stream (or revert it if it is 10226ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner // cached) and use an annotation scope token for current token. 10236ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner if (PP.isBacktrackEnabled()) 10246ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner PP.RevertCachedTokens(1); 10256ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner else 10266ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner PP.EnterToken(Tok); 10276ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner Tok.setKind(tok::annot_cxxscope); 10283507369940bfb269551bfa1fec812481f60e3552Douglas Gregor Tok.setAnnotationValue(SS.getScopeRep()); 10296ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner Tok.setAnnotationRange(SS.getRange()); 10306ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner 1031ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall // In case the tokens were cached, have Preprocessor replace them 1032ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall // with the annotation token. We don't need to do this if we've 1033ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall // just reverted back to the state we were in before being called. 1034ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall if (!wasScopeAnnotation) 1035ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall PP.AnnotateCachedTokens(Tok); 10369ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return false; 1037eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis} 1038eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis 1039eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// TryAnnotateScopeToken - Like TryAnnotateTypeOrScopeToken but only 104039a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor/// annotates C++ scope specifiers and template-ids. This returns 1041c8e27cc402043ec86c1698c09e4ee9e415b16207Chris Lattner/// true if the token was annotated or there was an error that could not be 1042c8e27cc402043ec86c1698c09e4ee9e415b16207Chris Lattner/// recovered from. 10431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// 104455a7cefc846765ac7d142a63f773747a20518d71Chris Lattner/// Note that this routine emits an error if you call it with ::new or ::delete 104555a7cefc846765ac7d142a63f773747a20518d71Chris Lattner/// as the current tokens, so only call it in contexts where these are invalid. 1046495c35d291da48c4f5655bbb54d15128ddde0d4dDouglas Gregorbool Parser::TryAnnotateCXXScopeToken(bool EnteringContext) { 10474bdd91c09fd59e0c154d759288beff300e31e1d0Argyrios Kyrtzidis assert(getLang().CPlusPlus && 10486ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner "Call sites of this function should be guarded by checking for C++"); 10497452c6fc567ea1799f617395d0fa4c7ed075e5d9Chris Lattner assert((Tok.is(tok::identifier) || Tok.is(tok::coloncolon)) && 10507452c6fc567ea1799f617395d0fa4c7ed075e5d9Chris Lattner "Cannot be a type or scope token!"); 1051eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis 10524bdd91c09fd59e0c154d759288beff300e31e1d0Argyrios Kyrtzidis CXXScopeSpec SS; 10539ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall if (ParseOptionalCXXScopeSpecifier(SS, /*ObjectType=*/0, EnteringContext)) 10549ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return true; 1055edc287751a4b05e3b4d8ff2b38fa30c5b59a548bJeffrey Yasskin if (SS.isEmpty()) 10569ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return false; 1057eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis 10586ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner // Push the current token back into the token stream (or revert it if it is 10596ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner // cached) and use an annotation scope token for current token. 10606ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner if (PP.isBacktrackEnabled()) 10616ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner PP.RevertCachedTokens(1); 10626ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner else 10636ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner PP.EnterToken(Tok); 10646ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner Tok.setKind(tok::annot_cxxscope); 10653507369940bfb269551bfa1fec812481f60e3552Douglas Gregor Tok.setAnnotationValue(SS.getScopeRep()); 10666ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner Tok.setAnnotationRange(SS.getRange()); 10676ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner 10686ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner // In case the tokens were cached, have Preprocessor replace them with the 10696ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner // annotation token. 10706ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner PP.AnnotateCachedTokens(Tok); 10719ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return false; 1072eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis} 10736c94a6d77f456f23ecd4c2061e6413786b5e6571John McCall 10746c94a6d77f456f23ecd4c2061e6413786b5e6571John McCall// Anchor the Parser::FieldCallback vtable to this translation unit. 10756c94a6d77f456f23ecd4c2061e6413786b5e6571John McCall// We use a spurious method instead of the destructor because 10766c94a6d77f456f23ecd4c2061e6413786b5e6571John McCall// destroying FieldCallbacks can actually be slightly 10776c94a6d77f456f23ecd4c2061e6413786b5e6571John McCall// performance-sensitive. 10786c94a6d77f456f23ecd4c2061e6413786b5e6571John McCallvoid Parser::FieldCallback::_anchor() { 10796c94a6d77f456f23ecd4c2061e6413786b5e6571John McCall} 1080