Parser.cpp revision 39d67117f896c6e2faa727671ef64b3c04b0e3fe
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 242e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor/// \brief A comment handler that passes comments found by the preprocessor 252e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor/// to the parser action. 262e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregorclass ActionCommentHandler : public CommentHandler { 272e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor Action &Actions; 281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 292e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregorpublic: 302e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor explicit ActionCommentHandler(Action &Actions) : Actions(Actions) { } 311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 32046c2277dcbcc8eb89dbb5b1b8c5226b7cb81635Chris Lattner virtual bool HandleComment(Preprocessor &PP, SourceRange Comment) { 332e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor Actions.ActOnComment(Comment); 34046c2277dcbcc8eb89dbb5b1b8c5226b7cb81635Chris Lattner return false; 352e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor } 362e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor}; 372e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor 385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid SpencerParser::Parser(Preprocessor &pp, Action &actions) 391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump : CrashInfo(*this), PP(pp), Actions(actions), Diags(PP.getDiagnostics()), 4008d92ecf6e5b1fd23177a08c2312b58d63d863dbChris Lattner GreaterThanIsOperator(true), ColonIsSacred(false), 4108d92ecf6e5b1fd23177a08c2312b58d63d863dbChris Lattner TemplateParameterDepth(0) { 425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Tok.setKind(tok::eof); 435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer CurScope = 0; 449e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner NumCachedScopes = 0; 455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ParenCount = BracketCount = BraceCount = 0; 46b28317a8e5e0e2953d1e5406d753d6c3c7f1e7d2Chris Lattner ObjCImpDecl = DeclPtrTy(); 47fcdd8fe26de3eee44927600bf1853e21bd90dd84Daniel Dunbar 48fcdd8fe26de3eee44927600bf1853e21bd90dd84Daniel Dunbar // Add #pragma handlers. These are removed and destroyed in the 49fcdd8fe26de3eee44927600bf1853e21bd90dd84Daniel Dunbar // destructor. 504726d03ab3abce41911c31d1354a18f1258cae4dTed Kremenek PackHandler.reset(new 514726d03ab3abce41911c31d1354a18f1258cae4dTed Kremenek PragmaPackHandler(&PP.getIdentifierTable().get("pack"), actions)); 524726d03ab3abce41911c31d1354a18f1258cae4dTed Kremenek PP.AddPragmaHandler(0, PackHandler.get()); 531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 544726d03ab3abce41911c31d1354a18f1258cae4dTed Kremenek UnusedHandler.reset(new 554726d03ab3abce41911c31d1354a18f1258cae4dTed Kremenek PragmaUnusedHandler(&PP.getIdentifierTable().get("unused"), actions, 564726d03ab3abce41911c31d1354a18f1258cae4dTed Kremenek *this)); 574726d03ab3abce41911c31d1354a18f1258cae4dTed Kremenek PP.AddPragmaHandler(0, UnusedHandler.get()); 589991479ad5dde617168cc1e4b18425cdbbfd9fa9Eli Friedman 599991479ad5dde617168cc1e4b18425cdbbfd9fa9Eli Friedman WeakHandler.reset(new 609991479ad5dde617168cc1e4b18425cdbbfd9fa9Eli Friedman PragmaWeakHandler(&PP.getIdentifierTable().get("weak"), actions)); 619991479ad5dde617168cc1e4b18425cdbbfd9fa9Eli Friedman PP.AddPragmaHandler(0, WeakHandler.get()); 621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 632e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor CommentHandler.reset(new ActionCommentHandler(actions)); 641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump PP.AddCommentHandler(CommentHandler.get()); 655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 670102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner/// If a crash happens while the parser is active, print out a line indicating 680102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner/// what the current token is. 690102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattnervoid PrettyStackTraceParserEntry::print(llvm::raw_ostream &OS) const { 700102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner const Token &Tok = P.getCurToken(); 71ddcbc0a72a04a5ae2493088f1437200a9ea480b1Chris Lattner if (Tok.is(tok::eof)) { 720102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner OS << "<eof> parser at end of file\n"; 730102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner return; 740102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner } 751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 76ddcbc0a72a04a5ae2493088f1437200a9ea480b1Chris Lattner if (Tok.getLocation().isInvalid()) { 77ddcbc0a72a04a5ae2493088f1437200a9ea480b1Chris Lattner OS << "<unknown> parser at unknown location\n"; 78ddcbc0a72a04a5ae2493088f1437200a9ea480b1Chris Lattner return; 79ddcbc0a72a04a5ae2493088f1437200a9ea480b1Chris Lattner } 801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 810102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner const Preprocessor &PP = P.getPreprocessor(); 820102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner Tok.getLocation().print(OS, PP.getSourceManager()); 839fa31dd71e0414e2ca905380e2f8d42710b22c82Daniel Dunbar if (Tok.isAnnotation()) 849fa31dd71e0414e2ca905380e2f8d42710b22c82Daniel Dunbar OS << ": at annotation token \n"; 859fa31dd71e0414e2ca905380e2f8d42710b22c82Daniel Dunbar else 869fa31dd71e0414e2ca905380e2f8d42710b22c82Daniel Dunbar OS << ": current parser token '" << PP.getSpelling(Tok) << "'\n"; 87f780abc21c39cd4731b9e38f2d2d9f7d1510bd7bDouglas Gregor} 885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 890102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner 903cbfe2c4159e0a219ae660d50625c013aa4afbd0Chris LattnerDiagnosticBuilder Parser::Diag(SourceLocation Loc, unsigned DiagID) { 910102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner return Diags.Report(FullSourceLoc(Loc, PP.getSourceManager()), DiagID); 921ab3b96de160e4fbffec2a776e284a48a3bb543dChris Lattner} 931ab3b96de160e4fbffec2a776e284a48a3bb543dChris Lattner 943cbfe2c4159e0a219ae660d50625c013aa4afbd0Chris LattnerDiagnosticBuilder Parser::Diag(const Token &Tok, unsigned DiagID) { 951ab3b96de160e4fbffec2a776e284a48a3bb543dChris Lattner return Diag(Tok.getLocation(), DiagID); 965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 984b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor/// \brief Emits a diagnostic suggesting parentheses surrounding a 994b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor/// given range. 1004b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor/// 1014b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor/// \param Loc The location where we'll emit the diagnostic. 1024b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor/// \param Loc The kind of diagnostic to emit. 1034b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor/// \param ParenRange Source range enclosing code that should be parenthesized. 1044b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregorvoid Parser::SuggestParentheses(SourceLocation Loc, unsigned DK, 1054b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor SourceRange ParenRange) { 106b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor SourceLocation EndLoc = PP.getLocForEndOfToken(ParenRange.getEnd()); 107b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor if (!ParenRange.getEnd().isFileID() || EndLoc.isInvalid()) { 1084b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor // We can't display the parentheses, so just dig the 1094b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor // warning/error and return. 1104b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor Diag(Loc, DK); 1114b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor return; 1124b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor } 1131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Diag(Loc, DK) 115b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor << CodeModificationHint::CreateInsertion(ParenRange.getBegin(), "(") 116b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor << CodeModificationHint::CreateInsertion(EndLoc, ")"); 1174b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor} 1184b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor 1195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// MatchRHSPunctuation - For punctuation with a LHS and RHS (e.g. '['/']'), 1205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// this helper function matches and consumes the specified RHS token if 1215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// present. If not present, it emits the specified diagnostic indicating 1225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// that the parser failed to match the RHS of the token at LHSLoc. LHSName 1235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// should be the name of the unmatched LHS token. 1245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid SpencerSourceLocation Parser::MatchRHSPunctuation(tok::TokenKind RHSTok, 1255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation LHSLoc) { 126a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 127000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.is(RHSTok)) 1285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return ConsumeAnyToken(); 129a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 1305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation R = Tok.getLocation(); 1315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const char *LHSName = "unknown"; 1325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer diag::kind DID = diag::err_parse_error; 1335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (RHSTok) { 1345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer default: break; 1355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::r_paren : LHSName = "("; DID = diag::err_expected_rparen; break; 1365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::r_brace : LHSName = "{"; DID = diag::err_expected_rbrace; break; 1375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::r_square: LHSName = "["; DID = diag::err_expected_rsquare; break; 1385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::greater: LHSName = "<"; DID = diag::err_expected_greater; break; 1395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(Tok, DID); 14128eb7e992b9a266abb300da25b6d3c1557cec361Chris Lattner Diag(LHSLoc, diag::note_matching) << LHSName; 1425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SkipUntil(RHSTok); 1435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return R; 1445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 1455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ExpectAndConsume - The parser expects that 'ExpectedTok' is next in the 1475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// input. If so, it is consumed and false is returned. 1485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 1495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// If the input is malformed, this emits the specified diagnostic. Next, if 1505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// SkipToTok is specified, it calls SkipUntil(SkipToTok). Finally, true is 1515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// returned. 1525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerbool Parser::ExpectAndConsume(tok::TokenKind ExpectedTok, unsigned DiagID, 1535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const char *Msg, tok::TokenKind SkipToTok) { 154000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.is(ExpectedTok)) { 1555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeAnyToken(); 1565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 1575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 158a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 1594b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor const char *Spelling = 0; 160b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor SourceLocation EndLoc = PP.getLocForEndOfToken(PrevTokLocation); 1611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (EndLoc.isValid() && 162b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor (Spelling = tok::getTokenSimpleSpelling(ExpectedTok))) { 1634b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor // Show what code to insert to fix this problem. 1641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Diag(EndLoc, DiagID) 1654b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor << Msg 166b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor << CodeModificationHint::CreateInsertion(EndLoc, Spelling); 1674b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor } else 1684b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor Diag(Tok, DiagID) << Msg; 1694b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor 1705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (SkipToTok != tok::unknown) 1715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SkipUntil(SkipToTok); 1725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return true; 1735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 1745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 1765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// Error recovery. 1775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 1785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// SkipUntil - Read tokens until we get to the specified token, then consume 180012cf464254804279efa84e21b4b493dde76c5f1Chris Lattner/// it (unless DontConsume is true). Because we cannot guarantee that the 1815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// token will ever occur, this skips to the next token, or to some likely 1825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// good stopping point. If StopAtSemi is true, skipping will stop at a ';' 1835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// character. 184a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump/// 1855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// If SkipUntil finds the specified token, it returns true, otherwise it 186a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump/// returns false. 1875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerbool Parser::SkipUntil(const tok::TokenKind *Toks, unsigned NumToks, 1885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool StopAtSemi, bool DontConsume) { 1895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // We always want this function to skip at least one token if the first token 1905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // isn't T and if not at EOF. 1915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool isFirstTokenSkipped = true; 1925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer while (1) { 1935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If we found one of the tokens, stop and return true. 1945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer for (unsigned i = 0; i != NumToks; ++i) { 195000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.is(Toks[i])) { 1965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (DontConsume) { 1975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Noop, don't consume the token. 1985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } else { 1995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeAnyToken(); 2005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return true; 2025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 204a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 2055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (Tok.getKind()) { 2065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::eof: 2075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Ran out of tokens. 2085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 209a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 2105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::l_paren: 2115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Recursively skip properly-nested parens. 2125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeParen(); 2135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SkipUntil(tok::r_paren, false); 2145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 2155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::l_square: 2165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Recursively skip properly-nested square brackets. 2175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeBracket(); 2185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SkipUntil(tok::r_square, false); 2195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 2205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::l_brace: 2215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Recursively skip properly-nested braces. 2225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeBrace(); 2235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SkipUntil(tok::r_brace, false); 2245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 225a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 2265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Okay, we found a ']' or '}' or ')', which we think should be balanced. 2275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Since the user wasn't looking for this token (if they were, it would 2285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // already be handled), this isn't balanced. If there is a LHS token at a 2295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // higher level, we will assume that this matches the unbalanced token 2305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // and return it. Otherwise, this is a spurious RHS token, which we skip. 2315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::r_paren: 2325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (ParenCount && !isFirstTokenSkipped) 2335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; // Matches something. 2345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeParen(); 2355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 2365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::r_square: 2375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (BracketCount && !isFirstTokenSkipped) 2385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; // Matches something. 2395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeBracket(); 2405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 2415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::r_brace: 2425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (BraceCount && !isFirstTokenSkipped) 2435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; // Matches something. 2445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeBrace(); 2455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 246a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 2475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::string_literal: 2485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::wide_string_literal: 2495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeStringToken(); 2505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 2515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::semi: 2525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (StopAtSemi) 2535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 2545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // FALL THROUGH. 2555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer default: 2565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Skip this token. 2575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeToken(); 2585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 2595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer isFirstTokenSkipped = false; 261a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump } 2625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 2635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 2655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// Scope manipulation 2665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 2675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// EnterScope - Start a new scope. 2695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencervoid Parser::EnterScope(unsigned ScopeFlags) { 2709e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner if (NumCachedScopes) { 2719e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner Scope *N = ScopeCache[--NumCachedScopes]; 2725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer N->Init(CurScope, ScopeFlags); 2735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer CurScope = N; 2745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } else { 2755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer CurScope = new Scope(CurScope, ScopeFlags); 2765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 2785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ExitScope - Pop a scope off the scope stack. 2805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencervoid Parser::ExitScope() { 2815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(CurScope && "Scope imbalance!"); 2825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 28390ae68aae98f12fe1950c63e2f6bd0fabce6cb1eChris Lattner // Inform the actions module that this scope is going away if there are any 28490ae68aae98f12fe1950c63e2f6bd0fabce6cb1eChris Lattner // decls in it. 28590ae68aae98f12fe1950c63e2f6bd0fabce6cb1eChris Lattner if (!CurScope->decl_empty()) 286b216c8861c60af9c56c900a485233255c4452df2Steve Naroff Actions.ActOnPopScope(Tok.getLocation(), CurScope); 287a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 2889e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner Scope *OldScope = CurScope; 2899e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner CurScope = OldScope->getParent(); 290a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 2919e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner if (NumCachedScopes == ScopeCacheSize) 2929e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner delete OldScope; 2935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer else 2949e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner ScopeCache[NumCachedScopes++] = OldScope; 2955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 2965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 3015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// C99 6.9: External Definitions. 3025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 3035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid SpencerParser::~Parser() { 3055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If we still have scopes active, delete the scope tree. 3065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer delete CurScope; 307a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 3085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Free the scope cache. 3099e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner for (unsigned i = 0, e = NumCachedScopes; i != e; ++i) 3109e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner delete ScopeCache[i]; 311fcdd8fe26de3eee44927600bf1853e21bd90dd84Daniel Dunbar 312fcdd8fe26de3eee44927600bf1853e21bd90dd84Daniel Dunbar // Remove the pragma handlers we installed. 3134726d03ab3abce41911c31d1354a18f1258cae4dTed Kremenek PP.RemovePragmaHandler(0, PackHandler.get()); 3144726d03ab3abce41911c31d1354a18f1258cae4dTed Kremenek PackHandler.reset(); 3154726d03ab3abce41911c31d1354a18f1258cae4dTed Kremenek PP.RemovePragmaHandler(0, UnusedHandler.get()); 3164726d03ab3abce41911c31d1354a18f1258cae4dTed Kremenek UnusedHandler.reset(); 3179991479ad5dde617168cc1e4b18425cdbbfd9fa9Eli Friedman PP.RemovePragmaHandler(0, WeakHandler.get()); 3189991479ad5dde617168cc1e4b18425cdbbfd9fa9Eli Friedman WeakHandler.reset(); 3192e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor PP.RemoveCommentHandler(CommentHandler.get()); 3205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 3215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// Initialize - Warm up the parser. 3235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 3245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencervoid Parser::Initialize() { 3255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Prime the lexer look-ahead. 3265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeToken(); 327a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 32831e057270232c1c37602579cb6461c2704175672Chris Lattner // Create the translation unit scope. Install it as the current scope. 3295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(CurScope == 0 && "A scope is already active?"); 33031e057270232c1c37602579cb6461c2704175672Chris Lattner EnterScope(Scope::DeclScope); 331b216c8861c60af9c56c900a485233255c4452df2Steve Naroff Actions.ActOnTranslationUnitScope(Tok.getLocation(), CurScope); 332a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 333000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.is(tok::eof) && 334f72617544287acf0281c3b1a733bcb22a02e6ca4Chris Lattner !getLang().CPlusPlus) // Empty source file is an extension in C 3355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(Tok, diag::ext_empty_source_file); 336a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 33734870da70fa42b0391b79627ebd0cfc6eb22213bChris Lattner // Initialization for Objective-C context sensitive keywords recognition. 338a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek // Referenced in Parser::ParseObjCTypeQualifierList. 33934870da70fa42b0391b79627ebd0cfc6eb22213bChris Lattner if (getLang().ObjC1) { 340a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek ObjCTypeQuals[objc_in] = &PP.getIdentifierTable().get("in"); 341a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek ObjCTypeQuals[objc_out] = &PP.getIdentifierTable().get("out"); 342a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek ObjCTypeQuals[objc_inout] = &PP.getIdentifierTable().get("inout"); 343a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek ObjCTypeQuals[objc_oneway] = &PP.getIdentifierTable().get("oneway"); 344a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek ObjCTypeQuals[objc_bycopy] = &PP.getIdentifierTable().get("bycopy"); 345a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek ObjCTypeQuals[objc_byref] = &PP.getIdentifierTable().get("byref"); 34634870da70fa42b0391b79627ebd0cfc6eb22213bChris Lattner } 347662e8b5647adbb1bc9eeceece7b64600cfa87471Daniel Dunbar 348662e8b5647adbb1bc9eeceece7b64600cfa87471Daniel Dunbar Ident_super = &PP.getIdentifierTable().get("super"); 34982287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson 35082287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson if (getLang().AltiVec) { 35182287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson Ident_vector = &PP.getIdentifierTable().get("vector"); 35282287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson Ident_pixel = &PP.getIdentifierTable().get("pixel"); 35382287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson } 3545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 3555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseTopLevelDecl - Parse one top-level declaration, return whatever the 3575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// action tells us to. This returns true if the EOF was encountered. 358682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattnerbool Parser::ParseTopLevelDecl(DeclGroupPtrTy &Result) { 359682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner Result = DeclGroupPtrTy(); 3609299f3fa85796613cc787a2062c9562d07c8613eChris Lattner if (Tok.is(tok::eof)) { 3619299f3fa85796613cc787a2062c9562d07c8613eChris Lattner Actions.ActOnEndOfTranslationUnit(); 3629299f3fa85796613cc787a2062c9562d07c8613eChris Lattner return true; 3639299f3fa85796613cc787a2062c9562d07c8613eChris Lattner } 364a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 365bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt CXX0XAttributeList Attr; 366bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt if (getLang().CPlusPlus0x && isCXX0XAttributeSpecifier()) 367bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt Attr = ParseCXX0XAttributes(); 368bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt Result = ParseExternalDeclaration(Attr); 3695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 3705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 3715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseTranslationUnit: 3735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// translation-unit: [C99 6.9] 374a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump/// external-declaration 375a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump/// translation-unit external-declaration 3765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencervoid Parser::ParseTranslationUnit() { 3778935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor Initialize(); 378a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 379682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner DeclGroupPtrTy Res; 38089307ffaf8acf4d6fdffd72b607ca4fbcfdffc9dSteve Naroff while (!ParseTopLevelDecl(Res)) 3815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /*parse them all*/; 3821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 38306f548596beef4c0a227a45cba996497f99566c0Chris Lattner ExitScope(); 38406f548596beef4c0a227a45cba996497f99566c0Chris Lattner assert(CurScope == 0 && "Scope imbalance!"); 3855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 3865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseExternalDeclaration: 38890b93d6f6961edd8f17e089253d655892adc1ef7Chris Lattner/// 389c19923dda3d28f67aab4726cd40bb07032758383Douglas Gregor/// external-declaration: [C99 6.9], declaration: [C++ dcl.dcl] 390c3018153a11afe91849748a93d920040a571b76cChris Lattner/// function-definition 391c3018153a11afe91849748a93d920040a571b76cChris Lattner/// declaration 392a1d71aea847a50b3acbd187d2ae9e5c1ead0f4e2Douglas Gregor/// [C++0x] empty-declaration 3935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [GNU] asm-definition 394c3018153a11afe91849748a93d920040a571b76cChris Lattner/// [GNU] __extension__ external-declaration 3955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [OBJC] objc-class-definition 3965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [OBJC] objc-class-declaration 3975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [OBJC] objc-alias-declaration 3985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [OBJC] objc-protocol-definition 3995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [OBJC] objc-method-definition 4005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [OBJC] @end 401c19923dda3d28f67aab4726cd40bb07032758383Douglas Gregor/// [C++] linkage-specification 4025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [GNU] asm-definition: 4035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// simple-asm-expr ';' 4045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 405a1d71aea847a50b3acbd187d2ae9e5c1ead0f4e2Douglas Gregor/// [C++0x] empty-declaration: 406a1d71aea847a50b3acbd187d2ae9e5c1ead0f4e2Douglas Gregor/// ';' 407a1d71aea847a50b3acbd187d2ae9e5c1ead0f4e2Douglas Gregor/// 40845f965581935791a018df829a14dff53c1dd8f47Douglas Gregor/// [C++0x/GNU] 'extern' 'template' declaration 409bbd37c62e34db3f5a95c899723484a76c71d7757Sean HuntParser::DeclGroupPtrTy Parser::ParseExternalDeclaration(CXX0XAttributeList Attr) { 410682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner DeclPtrTy SingleDecl; 4115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (Tok.getKind()) { 4125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::semi: 413a1d71aea847a50b3acbd187d2ae9e5c1ead0f4e2Douglas Gregor if (!getLang().CPlusPlus0x) 414a1d71aea847a50b3acbd187d2ae9e5c1ead0f4e2Douglas Gregor Diag(Tok, diag::ext_top_level_semi) 41529d9c1adfadf65e2d847d44bec37746844b9e0e3Chris Lattner << CodeModificationHint::CreateRemoval(Tok.getLocation()); 4161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeToken(); 4185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // TODO: Invoke action for top-level semicolon. 419682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return DeclGroupPtrTy(); 42090b93d6f6961edd8f17e089253d655892adc1ef7Chris Lattner case tok::r_brace: 42190b93d6f6961edd8f17e089253d655892adc1ef7Chris Lattner Diag(Tok, diag::err_expected_external_declaration); 42290b93d6f6961edd8f17e089253d655892adc1ef7Chris Lattner ConsumeBrace(); 423682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return DeclGroupPtrTy(); 42490b93d6f6961edd8f17e089253d655892adc1ef7Chris Lattner case tok::eof: 42590b93d6f6961edd8f17e089253d655892adc1ef7Chris Lattner Diag(Tok, diag::err_expected_external_declaration); 426682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return DeclGroupPtrTy(); 427c3018153a11afe91849748a93d920040a571b76cChris Lattner case tok::kw___extension__: { 428c46d1a1f8af67a87689d7db9eaf96027282ccaeaChris Lattner // __extension__ silences extension warnings in the subexpression. 429c46d1a1f8af67a87689d7db9eaf96027282ccaeaChris Lattner ExtensionRAIIObject O(Diags); // Use RAII to do this. 43039146d6497ad5e7ca8ef639221e7b3e15d07c888Chris Lattner ConsumeToken(); 431bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt return ParseExternalDeclaration(Attr); 432c3018153a11afe91849748a93d920040a571b76cChris Lattner } 433dfab6cb59a703f2ce4d58371652ce879f4c85a09Anders Carlsson case tok::kw_asm: { 434bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt if (Attr.HasAttr) 435bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt Diag(Attr.Range.getBegin(), diag::err_attributes_not_allowed) 436bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt << Attr.Range; 437bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt 438effa8d1c97b00a3f53e972b0e61d9aade5ea1c57Sebastian Redl OwningExprResult Result(ParseSimpleAsm()); 439a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 4403f9424f3206b834b5dd0e7c403348651ab6fafbbAnders Carlsson ExpectAndConsume(tok::semi, diag::err_expected_semi_after, 4413f9424f3206b834b5dd0e7c403348651ab6fafbbAnders Carlsson "top-level asm block"); 442dfab6cb59a703f2ce4d58371652ce879f4c85a09Anders Carlsson 443682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner if (Result.isInvalid()) 444682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return DeclGroupPtrTy(); 445682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner SingleDecl = Actions.ActOnFileScopeAsmDecl(Tok.getLocation(), move(Result)); 446682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner break; 447dfab6cb59a703f2ce4d58371652ce879f4c85a09Anders Carlsson } 4485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::at: 449682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner // @ is not a legal token unless objc is enabled, no need to check for ObjC. 450682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner /// FIXME: ParseObjCAtDirectives should return a DeclGroup for things like 451682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner /// @class foo, bar; 452682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner SingleDecl = ParseObjCAtDirectives(); 453682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner break; 4545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::minus: 4555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::plus: 456682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner if (!getLang().ObjC1) { 457682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner Diag(Tok, diag::err_expected_external_declaration); 458682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner ConsumeToken(); 459682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return DeclGroupPtrTy(); 460682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner } 461682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner SingleDecl = ParseObjCMethodDefinition(); 462682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner break; 463791215b7a24666912c0b71175d2ca5ba082f666eDouglas Gregor case tok::code_completion: 464b6ac2451bfed36206c5cec7217372c4299f67f2bDouglas Gregor Actions.CodeCompleteOrdinaryName(CurScope, 465b6ac2451bfed36206c5cec7217372c4299f67f2bDouglas Gregor ObjCImpDecl? Action::CCC_ObjCImplementation 466b6ac2451bfed36206c5cec7217372c4299f67f2bDouglas Gregor : Action::CCC_Namespace); 467791215b7a24666912c0b71175d2ca5ba082f666eDouglas Gregor ConsumeToken(); 468bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt return ParseExternalDeclaration(Attr); 469f780abc21c39cd4731b9e38f2d2d9f7d1510bd7bDouglas Gregor case tok::kw_using: 4708f08cb7d0b97786b17ef05e05caa55aad4d6bd39Chris Lattner case tok::kw_namespace: 4715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::kw_typedef: 472adcac8824a9cff13f1ef61a69e38c1041cba12eeDouglas Gregor case tok::kw_template: 473adcac8824a9cff13f1ef61a69e38c1041cba12eeDouglas Gregor case tok::kw_export: // As in 'export template' 474511d7aba3b12853fdb88729a0313b80a60eab8adAnders Carlsson case tok::kw_static_assert: 475bae35118fc5cea2da08567dbb9763af7f906dae2Chris Lattner // A function definition cannot start with a these keywords. 47697144fc41a9419bf6d74fc9450e8ef3f6e11f7e0Chris Lattner { 47797144fc41a9419bf6d74fc9450e8ef3f6e11f7e0Chris Lattner SourceLocation DeclEnd; 478bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt return ParseDeclaration(Declarator::FileContext, DeclEnd, Attr); 47997144fc41a9419bf6d74fc9450e8ef3f6e11f7e0Chris Lattner } 48045f965581935791a018df829a14dff53c1dd8f47Douglas Gregor case tok::kw_extern: 48145f965581935791a018df829a14dff53c1dd8f47Douglas Gregor if (getLang().CPlusPlus && NextToken().is(tok::kw_template)) { 48245f965581935791a018df829a14dff53c1dd8f47Douglas Gregor // Extern templates 48345f965581935791a018df829a14dff53c1dd8f47Douglas Gregor SourceLocation ExternLoc = ConsumeToken(); 48445f965581935791a018df829a14dff53c1dd8f47Douglas Gregor SourceLocation TemplateLoc = ConsumeToken(); 48545f965581935791a018df829a14dff53c1dd8f47Douglas Gregor SourceLocation DeclEnd; 48645f965581935791a018df829a14dff53c1dd8f47Douglas Gregor return Actions.ConvertDeclToDeclGroup( 48745f965581935791a018df829a14dff53c1dd8f47Douglas Gregor ParseExplicitInstantiation(ExternLoc, TemplateLoc, DeclEnd)); 48845f965581935791a018df829a14dff53c1dd8f47Douglas Gregor } 4891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 49045f965581935791a018df829a14dff53c1dd8f47Douglas Gregor // FIXME: Detect C++ linkage specifications here? 4911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 49245f965581935791a018df829a14dff53c1dd8f47Douglas Gregor // Fall through to handle other declarations or function definitions. 4931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer default: 4955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // We can't tell whether this is a function-definition or declaration yet. 496bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt return ParseDeclarationOrFunctionDefinition(Attr.AttrList); 4975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 4981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 499682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner // This routine returns a DeclGroup, if the thing we parsed only contains a 500682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner // single decl, convert it now. 501682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return Actions.ConvertDeclToDeclGroup(SingleDecl); 5025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 5035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 5041426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor/// \brief Determine whether the current token, if it occurs after a 5051426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor/// declarator, continues a declaration or declaration list. 5061426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregorbool Parser::isDeclarationAfterDeclarator() { 5071426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor return Tok.is(tok::equal) || // int X()= -> not a function def 5081426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor Tok.is(tok::comma) || // int X(), -> not a function def 5091426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor Tok.is(tok::semi) || // int X(); -> not a function def 5101426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor Tok.is(tok::kw_asm) || // int X() __asm__ -> not a function def 5111426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor Tok.is(tok::kw___attribute) || // int X() __attr__ -> not a function def 5121426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor (getLang().CPlusPlus && 5131426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor Tok.is(tok::l_paren)); // int X(0) -> not a function def [C++] 5141426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor} 5151426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor 5161426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor/// \brief Determine whether the current token, if it occurs after a 5171426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor/// declarator, indicates the start of a function definition. 5181426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregorbool Parser::isStartOfFunctionDefinition() { 5195d1c6198cfe55f8de025902c621c0721b640ff60Chris Lattner if (Tok.is(tok::l_brace)) // int X() {} 5205d1c6198cfe55f8de025902c621c0721b640ff60Chris Lattner return true; 5215d1c6198cfe55f8de025902c621c0721b640ff60Chris Lattner 5225d1c6198cfe55f8de025902c621c0721b640ff60Chris Lattner if (!getLang().CPlusPlus) 5235d1c6198cfe55f8de025902c621c0721b640ff60Chris Lattner return isDeclarationSpecifier(); // int X(f) int f; {} 5245d1c6198cfe55f8de025902c621c0721b640ff60Chris Lattner return Tok.is(tok::colon) || // X() : Base() {} (used for ctors) 5255d1c6198cfe55f8de025902c621c0721b640ff60Chris Lattner Tok.is(tok::kw_try); // X() try { ... } 5261426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor} 5271426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor 5285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseDeclarationOrFunctionDefinition - Parse either a function-definition or 5295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// a declaration. We can't tell which we have until we read up to the 530c4b4e7b8f6ca9b036824e048af49cd2a52b57cdfDouglas Gregor/// compound-statement in function-definition. TemplateParams, if 531c4b4e7b8f6ca9b036824e048af49cd2a52b57cdfDouglas Gregor/// non-NULL, provides the template parameters when we're parsing a 5321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// C++ template-declaration. 5335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 5345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// function-definition: [C99 6.9.1] 535a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner/// decl-specs declarator declaration-list[opt] compound-statement 536a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner/// [C90] function-definition: [C99 6.7.1] - implicit int result 537a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump/// [C90] decl-specs[opt] declarator declaration-list[opt] compound-statement 538a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner/// 5395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// declaration: [C99 6.7] 540697e15f2a028f8997cccb24ecd05099988cfb1a9Chris Lattner/// declaration-specifiers init-declarator-list[opt] ';' 541697e15f2a028f8997cccb24ecd05099988cfb1a9Chris Lattner/// [!C99] init-declarator-list ';' [TODO: warn in c99 mode] 5425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [OMP] threadprivate-directive [TODO] 5435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 544682bf92db408a6cbc3d37b5496a99b6ef85041ecChris LattnerParser::DeclGroupPtrTy 5453acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz JahanianParser::ParseDeclarationOrFunctionDefinition(ParsingDeclSpec &DS, 5463acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz Jahanian AttributeList *Attr, 547bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt AccessSpecifier AS) { 5485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Parse the common declaration-specifiers piece. 549bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt if (Attr) 550bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt DS.AddAttributes(Attr); 551bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt 5520efc2c1716be4f1c5f1343cad3b047e74861f030Douglas Gregor ParseDeclarationSpecifiers(DS, ParsedTemplateInfo(), AS, DSC_top_level); 553a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 5545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // C99 6.7.2.3p6: Handle "struct-or-union identifier;", "enum { X };" 5555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // declaration-specifiers init-declarator-list[opt] ';' 556000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.is(tok::semi)) { 5575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeToken(); 558682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner DeclPtrTy TheDecl = Actions.ParsedFreeStandingDeclSpec(CurScope, DS); 55954abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall DS.complete(TheDecl); 560682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return Actions.ConvertDeclToDeclGroup(TheDecl); 5615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 562a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 563246e70f69cb8aeb67225c54690f1c6b25abd5a86Daniel Dunbar // ObjC2 allows prefix attributes on class interfaces and protocols. 564246e70f69cb8aeb67225c54690f1c6b25abd5a86Daniel Dunbar // FIXME: This still needs better diagnostics. We should only accept 565246e70f69cb8aeb67225c54690f1c6b25abd5a86Daniel Dunbar // attributes here, no types, etc. 566000732226610650837478cba97843d19b75f648eChris Lattner if (getLang().ObjC2 && Tok.is(tok::at)) { 567dac269b65eed82182fc3e96566dedd6562dfe11eSteve Naroff SourceLocation AtLoc = ConsumeToken(); // the "@" 5681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (!Tok.isObjCAtKeyword(tok::objc_interface) && 569246e70f69cb8aeb67225c54690f1c6b25abd5a86Daniel Dunbar !Tok.isObjCAtKeyword(tok::objc_protocol)) { 570246e70f69cb8aeb67225c54690f1c6b25abd5a86Daniel Dunbar Diag(Tok, diag::err_objc_unexpected_attr); 571cb53b361bce341c8591333c6997f62e480acc0b4Chris Lattner SkipUntil(tok::semi); // FIXME: better skip? 572682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return DeclGroupPtrTy(); 573cb53b361bce341c8591333c6997f62e480acc0b4Chris Lattner } 574d8ac05753dc4506224d445ff98399c01da3136e5John McCall 57554abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall DS.abort(); 57654abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall 5770de2ae28c603322f05e2d9200c7d457c8b928983Fariborz Jahanian const char *PrevSpec = 0; 578fec54013fcd0eb72642741584ca04c1bc292bef8John McCall unsigned DiagID; 579fec54013fcd0eb72642741584ca04c1bc292bef8John McCall if (DS.SetTypeSpecType(DeclSpec::TST_unspecified, AtLoc, PrevSpec, DiagID)) 580fec54013fcd0eb72642741584ca04c1bc292bef8John McCall Diag(AtLoc, DiagID) << PrevSpec; 5811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 582682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner DeclPtrTy TheDecl; 583246e70f69cb8aeb67225c54690f1c6b25abd5a86Daniel Dunbar if (Tok.isObjCAtKeyword(tok::objc_protocol)) 584682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner TheDecl = ParseObjCAtProtocolDeclaration(AtLoc, DS.getAttributes()); 585682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner else 586682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner TheDecl = ParseObjCAtInterfaceDeclaration(AtLoc, DS.getAttributes()); 587682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return Actions.ConvertDeclToDeclGroup(TheDecl); 588dac269b65eed82182fc3e96566dedd6562dfe11eSteve Naroff } 589a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 590c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner // If the declspec consisted only of 'extern' and we have a string 591c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner // literal following it, this must be a C++ linkage specifier like 592c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner // 'extern "C"'. 5933c6f6a7a1bb9969112617a26d2333bab2f6efd65Chris Lattner if (Tok.is(tok::string_literal) && getLang().CPlusPlus && 594c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner DS.getStorageClassSpec() == DeclSpec::SCS_extern && 595682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner DS.getParsedSpecifiers() == DeclSpec::PQ_StorageClassSpecifier) { 5963acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz Jahanian DeclPtrTy TheDecl = ParseLinkage(DS, Declarator::FileContext); 597682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return Actions.ConvertDeclToDeclGroup(TheDecl); 598682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner } 599c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner 600d8ac05753dc4506224d445ff98399c01da3136e5John McCall return ParseDeclGroup(DS, Declarator::FileContext, true); 6015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 6025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6033acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz JahanianParser::DeclGroupPtrTy 6043acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz JahanianParser::ParseDeclarationOrFunctionDefinition(AttributeList *Attr, 6053acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz Jahanian AccessSpecifier AS) { 6063acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz Jahanian ParsingDeclSpec DS(*this); 6073acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz Jahanian return ParseDeclarationOrFunctionDefinition(DS, Attr, AS); 6083acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz Jahanian} 6093acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz Jahanian 6105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseFunctionDefinition - We parsed and verified that the specified 6115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// Declarator is well formed. If this is a K&R-style function, read the 6125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// parameters declaration-list, then start the compound-statement. 6135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 614a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner/// function-definition: [C99 6.9.1] 615a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner/// decl-specs declarator declaration-list[opt] compound-statement 616a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner/// [C90] function-definition: [C99 6.7.1] - implicit int result 617a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump/// [C90] decl-specs[opt] declarator declaration-list[opt] compound-statement 6187ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor/// [C++] function-definition: [C++ 8.4] 61923c4b1883b13dc17484b7214091b73f3ba29096eChris Lattner/// decl-specifier-seq[opt] declarator ctor-initializer[opt] 62023c4b1883b13dc17484b7214091b73f3ba29096eChris Lattner/// function-body 6217ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor/// [C++] function-definition: [C++ 8.4] 622d3a413d3b8eb39bcee5944bc545d9997c1abe492Sebastian Redl/// decl-specifier-seq[opt] declarator function-try-block 6235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 62454abf7d4fa3123b8324c09d2a4dfb789fd818403John McCallParser::DeclPtrTy Parser::ParseFunctionDefinition(ParsingDeclarator &D, 62552591bf224b2c43e2b00e265bb8599a620081925Douglas Gregor const ParsedTemplateInfo &TemplateInfo) { 6265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const DeclaratorChunk &FnTypeInfo = D.getTypeObject(0); 6275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(FnTypeInfo.Kind == DeclaratorChunk::Function && 6285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer "This isn't a function declarator!"); 6295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const DeclaratorChunk::FunctionTypeInfo &FTI = FnTypeInfo.Fun; 630a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 631a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner // If this is C90 and the declspecs were completely missing, fudge in an 632a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner // implicit int. We do this here because this is the only place where 633a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner // declaration-specifiers are completely optional in the grammar. 6342a327d11a07dfbdf20910cebbae38910eda111fdChris Lattner if (getLang().ImplicitInt && D.getDeclSpec().isEmpty()) { 635a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner const char *PrevSpec; 636fec54013fcd0eb72642741584ca04c1bc292bef8John McCall unsigned DiagID; 63731c286803c60c59d314525e047d0e72f9a1cb55bChris Lattner D.getMutableDeclSpec().SetTypeSpecType(DeclSpec::TST_int, 63831c286803c60c59d314525e047d0e72f9a1cb55bChris Lattner D.getIdentifierLoc(), 639fec54013fcd0eb72642741584ca04c1bc292bef8John McCall PrevSpec, DiagID); 640ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl D.SetRangeBegin(D.getDeclSpec().getSourceRange().getBegin()); 641a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner } 642a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 6435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If this declaration was formed with a K&R-style identifier list for the 6445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // arguments, parse declarations for all of the args next. 6455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // int foo(a,b) int a; float b; {} 6465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (!FTI.hasPrototype && FTI.NumArgs != 0) 6475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ParseKNRParamDeclarations(D); 6485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6497ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor // We should have either an opening brace or, in a C++ constructor, 6507ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor // we may have a colon. 651d3a413d3b8eb39bcee5944bc545d9997c1abe492Sebastian Redl if (Tok.isNot(tok::l_brace) && Tok.isNot(tok::colon) && 652d3a413d3b8eb39bcee5944bc545d9997c1abe492Sebastian Redl Tok.isNot(tok::kw_try)) { 6535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(Tok, diag::err_expected_fn_body); 6545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Skip over garbage, until we get to '{'. Don't eat the '{'. 6565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SkipUntil(tok::l_brace, true, true); 657a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 6585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If we didn't find the '{', bail out. 659000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.isNot(tok::l_brace)) 660b28317a8e5e0e2953d1e5406d753d6c3c7f1e7d2Chris Lattner return DeclPtrTy(); 6615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 662a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 663b652cea7d7b70ebe3744fb6d72c9ad9cf3c95429Chris Lattner // Enter a scope for the function body. 6648935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor ParseScope BodyScope(this, Scope::FnScope|Scope::DeclScope); 665a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 666b652cea7d7b70ebe3744fb6d72c9ad9cf3c95429Chris Lattner // Tell the actions module that we have entered a function definition with the 667b652cea7d7b70ebe3744fb6d72c9ad9cf3c95429Chris Lattner // specified Declarator for the function. 6681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump DeclPtrTy Res = TemplateInfo.TemplateParams? 66952591bf224b2c43e2b00e265bb8599a620081925Douglas Gregor Actions.ActOnStartOfFunctionTemplateDef(CurScope, 67052591bf224b2c43e2b00e265bb8599a620081925Douglas Gregor Action::MultiTemplateParamsArg(Actions, 67152591bf224b2c43e2b00e265bb8599a620081925Douglas Gregor TemplateInfo.TemplateParams->data(), 67252591bf224b2c43e2b00e265bb8599a620081925Douglas Gregor TemplateInfo.TemplateParams->size()), 67352591bf224b2c43e2b00e265bb8599a620081925Douglas Gregor D) 67452591bf224b2c43e2b00e265bb8599a620081925Douglas Gregor : Actions.ActOnStartOfFunctionDef(CurScope, D); 675a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 67654abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall // Break out of the ParsingDeclarator context before we parse the body. 67754abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall D.complete(Res); 67854abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall 67954abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall // Break out of the ParsingDeclSpec context, too. This const_cast is 68054abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall // safe because we're always the sole owner. 68154abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall D.getMutableDeclSpec().abort(); 68254abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall 683d3a413d3b8eb39bcee5944bc545d9997c1abe492Sebastian Redl if (Tok.is(tok::kw_try)) 684d3a413d3b8eb39bcee5944bc545d9997c1abe492Sebastian Redl return ParseFunctionTryBlock(Res); 685d3a413d3b8eb39bcee5944bc545d9997c1abe492Sebastian Redl 6867ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor // If we have a colon, then we're probably parsing a C++ 6877ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor // ctor-initializer. 6887ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor if (Tok.is(tok::colon)) 6897ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor ParseConstructorInitializer(Res); 6900849d38128536b0b33377d91bf02d005308319efFariborz Jahanian else 691393612e6c7727f1fee50039254d9f434364cc0b2Fariborz Jahanian Actions.ActOnDefaultCtorInitializers(Res); 6927ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor 69340e9bc84a2ab49fc33c2b1a95c6674ab2b820e9eChris Lattner return ParseFunctionStatementBody(Res); 6945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 6955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseKNRParamDeclarations - Parse 'declaration-list[opt]' which provides 6975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// types for a function with a K&R-style identifier list for arguments. 6985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencervoid Parser::ParseKNRParamDeclarations(Declarator &D) { 6995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // We know that the top-level of this declarator is a function. 7005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DeclaratorChunk::FunctionTypeInfo &FTI = D.getTypeObject(0).Fun; 7015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 70204421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner // Enter function-declaration scope, limiting any declarators to the 70304421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner // function prototype scope, including parameter declarators. 7043218c4bb3b5d7250f12420de6db7ef3e3f805a75Douglas Gregor ParseScope PrototypeScope(this, Scope::FunctionPrototypeScope|Scope::DeclScope); 70504421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner 7065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Read all the argument declarations. 7075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer while (isDeclarationSpecifier()) { 7085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation DSStart = Tok.getLocation(); 709a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 7105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Parse the common declaration-specifiers piece. 7115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DeclSpec DS; 7125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ParseDeclarationSpecifiers(DS); 713a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 7145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // C99 6.9.1p6: 'each declaration in the declaration list shall have at 7155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // least one declarator'. 7165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // NOTE: GCC just makes this an ext-warn. It's not clear what it does with 7175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // the declarations though. It's trivial to ignore them, really hard to do 7185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // anything else with them. 719000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.is(tok::semi)) { 7205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(DSStart, diag::err_declaration_does_not_declare_param); 7215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeToken(); 7225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer continue; 7235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 724a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 7255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // C99 6.9.1p6: Declarations shall contain no storage-class specifiers other 7265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // than register. 7275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (DS.getStorageClassSpec() != DeclSpec::SCS_unspecified && 7285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DS.getStorageClassSpec() != DeclSpec::SCS_register) { 7295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(DS.getStorageClassSpecLoc(), 7305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer diag::err_invalid_storage_class_in_func_decl); 7315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DS.ClearStorageClassSpecs(); 7325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (DS.isThreadSpecified()) { 7345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(DS.getThreadSpecLoc(), 7355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer diag::err_invalid_storage_class_in_func_decl); 7365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DS.ClearStorageClassSpecs(); 7375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 738a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 7395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Parse the first declarator attached to this declspec. 7405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Declarator ParmDeclarator(DS, Declarator::KNRTypeListContext); 7415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ParseDeclarator(ParmDeclarator); 7425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Handle the full declarator list. 7445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer while (1) { 745b28317a8e5e0e2953d1e5406d753d6c3c7f1e7d2Chris Lattner Action::AttrTy *AttrList; 7465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If attributes are present, parse them. 747000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.is(tok::kw___attribute)) 7485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // FIXME: attach attributes too. 749bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt AttrList = ParseGNUAttributes(); 750a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 7515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Ask the actions module to compute the type for this declarator. 752b28317a8e5e0e2953d1e5406d753d6c3c7f1e7d2Chris Lattner Action::DeclPtrTy Param = 75304421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner Actions.ActOnParamDeclarator(CurScope, ParmDeclarator); 7542bd42fadafddc8acf744b57a970bdc96a077c617Steve Naroff 755a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump if (Param && 7565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // A missing identifier has already been diagnosed. 7575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ParmDeclarator.getIdentifier()) { 7585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Scan the argument list looking for the correct param to apply this 7605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // type. 7615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer for (unsigned i = 0; ; ++i) { 7625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // C99 6.9.1p6: those declarators shall declare only identifiers from 7635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // the identifier list. 7645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (i == FTI.NumArgs) { 7651ab3b96de160e4fbffec2a776e284a48a3bb543dChris Lattner Diag(ParmDeclarator.getIdentifierLoc(), diag::err_no_matching_param) 7666898e33d0b28346a4dbe9a666e0e4188fea80460Chris Lattner << ParmDeclarator.getIdentifier(); 7675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 7685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 769a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 7705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (FTI.ArgInfo[i].Ident == ParmDeclarator.getIdentifier()) { 7715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Reject redefinitions of parameters. 77204421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner if (FTI.ArgInfo[i].Param) { 7735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(ParmDeclarator.getIdentifierLoc(), 7741ab3b96de160e4fbffec2a776e284a48a3bb543dChris Lattner diag::err_param_redefinition) 7756898e33d0b28346a4dbe9a666e0e4188fea80460Chris Lattner << ParmDeclarator.getIdentifier(); 7765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } else { 77704421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner FTI.ArgInfo[i].Param = Param; 7785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 7805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If we don't have a comma, it is either the end of the list (a ';') or 7855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // an error, bail out. 786000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.isNot(tok::comma)) 7875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 788a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 7895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Consume the comma. 7905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeToken(); 791a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 7925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Parse the next declarator. 7935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ParmDeclarator.clear(); 7945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ParseDeclarator(ParmDeclarator); 7955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 796a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 797000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.is(tok::semi)) { 7985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeToken(); 7995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } else { 8005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(Tok, diag::err_parse_error); 8015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Skip to end of block or statement 8025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SkipUntil(tok::semi, true); 803000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.is(tok::semi)) 8045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeToken(); 8055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 8065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 807a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 8085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // The actions module must verify that all arguments were declared. 809a3a835149ed4b183e3b009a1f94a6123779d696bDouglas Gregor Actions.ActOnFinishKNRParamDeclarations(CurScope, D, Tok.getLocation()); 8105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 8115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 8125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 8135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseAsmStringLiteral - This is just a normal string-literal, but is not 8145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// allowed to be a wide string, and is not subject to character translation. 8155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 8165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [GNU] asm-string-literal: 8175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// string-literal 8185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 819effa8d1c97b00a3f53e972b0e61d9aade5ea1c57Sebastian RedlParser::OwningExprResult Parser::ParseAsmStringLiteral() { 8205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (!isTokenStringLiteral()) { 8215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(Tok, diag::err_expected_string_literal); 82261364dddc33383e62cfe3b841dbc0f471280d95bSebastian Redl return ExprError(); 8235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 824a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 82520df9b7ab9388b2a488c5b1293cd196b1e073b4eSebastian Redl OwningExprResult Res(ParseStringLiteralExpression()); 826effa8d1c97b00a3f53e972b0e61d9aade5ea1c57Sebastian Redl if (Res.isInvalid()) return move(Res); 827a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 8285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // TODO: Diagnose: wide string literal in 'asm' 829a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 830effa8d1c97b00a3f53e972b0e61d9aade5ea1c57Sebastian Redl return move(Res); 8315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 8325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 8335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseSimpleAsm 8345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 8355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [GNU] simple-asm-expr: 8365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 'asm' '(' asm-string-literal ')' 8375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 838ab197baec16bacade82325fb274cf6b992ac5d8aSebastian RedlParser::OwningExprResult Parser::ParseSimpleAsm(SourceLocation *EndLoc) { 839000732226610650837478cba97843d19b75f648eChris Lattner assert(Tok.is(tok::kw_asm) && "Not an asm!"); 840dfab6cb59a703f2ce4d58371652ce879f4c85a09Anders Carlsson SourceLocation Loc = ConsumeToken(); 841a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 8427a6ae743b2ecfdfadadf7df53b569a9a3871a8fdJohn McCall if (Tok.is(tok::kw_volatile)) { 843841d5e607f81bf5627e47d0c62ead29f28b5b0c2John McCall // Remove from the end of 'asm' to the end of 'volatile'. 844841d5e607f81bf5627e47d0c62ead29f28b5b0c2John McCall SourceRange RemovalRange(PP.getLocForEndOfToken(Loc), 845841d5e607f81bf5627e47d0c62ead29f28b5b0c2John McCall PP.getLocForEndOfToken(Tok.getLocation())); 846841d5e607f81bf5627e47d0c62ead29f28b5b0c2John McCall 847841d5e607f81bf5627e47d0c62ead29f28b5b0c2John McCall Diag(Tok, diag::warn_file_asm_volatile) 848841d5e607f81bf5627e47d0c62ead29f28b5b0c2John McCall << CodeModificationHint::CreateRemoval(RemovalRange); 8497a6ae743b2ecfdfadadf7df53b569a9a3871a8fdJohn McCall ConsumeToken(); 8507a6ae743b2ecfdfadadf7df53b569a9a3871a8fdJohn McCall } 8517a6ae743b2ecfdfadadf7df53b569a9a3871a8fdJohn McCall 852000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.isNot(tok::l_paren)) { 8531ab3b96de160e4fbffec2a776e284a48a3bb543dChris Lattner Diag(Tok, diag::err_expected_lparen_after) << "asm"; 85461364dddc33383e62cfe3b841dbc0f471280d95bSebastian Redl return ExprError(); 8555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 856a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 857ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl Loc = ConsumeParen(); 858a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 859effa8d1c97b00a3f53e972b0e61d9aade5ea1c57Sebastian Redl OwningExprResult Result(ParseAsmStringLiteral()); 860a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 861ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl if (Result.isInvalid()) { 862ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl SkipUntil(tok::r_paren, true, true); 863ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl if (EndLoc) 864ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl *EndLoc = Tok.getLocation(); 865ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl ConsumeAnyToken(); 866ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl } else { 867ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl Loc = MatchRHSPunctuation(tok::r_paren, Loc); 868ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl if (EndLoc) 869ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl *EndLoc = Loc; 870ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl } 871a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 872effa8d1c97b00a3f53e972b0e61d9aade5ea1c57Sebastian Redl return move(Result); 8735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 8745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 875eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// TryAnnotateTypeOrScopeToken - If the current token position is on a 876eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// typename (possibly qualified in C++) or a C++ scope specifier not followed 877eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// by a typename, TryAnnotateTypeOrScopeToken will replace one or more tokens 878eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// with a single annotation token representing the typename or C++ scope 879eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// respectively. 880eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// This simplifies handling of C++ scope specifiers and allows efficient 881eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// backtracking without the need to re-parse and resolve nested-names and 882eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// typenames. 88344802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// It will mainly be called when we expect to treat identifiers as typenames 88444802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// (if they are typenames). For example, in C we do not expect identifiers 88544802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// inside expressions to be treated as typenames so it will not be called 88644802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// for expressions in C. 88744802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// The benefit for C/ObjC is that a typename will be annotated and 888b43a50ff1b0b171ece84425b0ad83a9a31f038faSteve Naroff/// Actions.getTypeName will not be needed to be called again (e.g. getTypeName 88944802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// will not be called twice, once to check whether we have a declaration 89044802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// specifier, and another one to get the actual type inside 89144802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// ParseDeclarationSpecifiers). 892a7bc7c880f86bc180684ef032d06df51bcae7a23Chris Lattner/// 893c8e27cc402043ec86c1698c09e4ee9e415b16207Chris Lattner/// This returns true if the token was annotated or an unrecoverable error 894c8e27cc402043ec86c1698c09e4ee9e415b16207Chris Lattner/// occurs. 8951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// 89655a7cefc846765ac7d142a63f773747a20518d71Chris Lattner/// Note that this routine emits an error if you call it with ::new or ::delete 89755a7cefc846765ac7d142a63f773747a20518d71Chris Lattner/// as the current tokens, so only call it in contexts where these are invalid. 898495c35d291da48c4f5655bbb54d15128ddde0d4dDouglas Gregorbool Parser::TryAnnotateTypeOrScopeToken(bool EnteringContext) { 8991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert((Tok.is(tok::identifier) || Tok.is(tok::coloncolon) 900ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall || Tok.is(tok::kw_typename) || Tok.is(tok::annot_cxxscope)) && 9017452c6fc567ea1799f617395d0fa4c7ed075e5d9Chris Lattner "Cannot be a type or scope token!"); 9021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 903d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor if (Tok.is(tok::kw_typename)) { 904d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor // Parse a C++ typename-specifier, e.g., "typename T::type". 905d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor // 906d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor // typename-specifier: 907d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor // 'typename' '::' [opt] nested-name-specifier identifier 9081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // 'typename' '::' [opt] nested-name-specifier template [opt] 9091734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor // simple-template-id 910d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor SourceLocation TypenameLoc = ConsumeToken(); 911d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor CXXScopeSpec SS; 9121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump bool HadNestedNameSpecifier 9132dd078ae50ff7be1fb25ebeedde45e9ab691a4f0Douglas Gregor = ParseOptionalCXXScopeSpecifier(SS, /*ObjectType=*/0, false); 914d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor if (!HadNestedNameSpecifier) { 915d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor Diag(Tok.getLocation(), diag::err_expected_qualified_after_typename); 916d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor return false; 917d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor } 918d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor 919d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor TypeResult Ty; 920d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor if (Tok.is(tok::identifier)) { 921d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor // FIXME: check whether the next token is '<', first! 9221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Ty = Actions.ActOnTypenameType(TypenameLoc, SS, *Tok.getIdentifierInfo(), 923d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor Tok.getLocation()); 9241734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor } else if (Tok.is(tok::annot_template_id)) { 9251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump TemplateIdAnnotation *TemplateId 9261734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor = static_cast<TemplateIdAnnotation *>(Tok.getAnnotationValue()); 9271734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor if (TemplateId->Kind == TNK_Function_template) { 9281734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor Diag(Tok, diag::err_typename_refers_to_non_type_template) 9291734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor << Tok.getAnnotationRange(); 9301734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor return false; 9311734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor } 932d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor 93331a19b6989bbf326d2de5ae12e712e2a65ca9c34Douglas Gregor AnnotateTemplateIdTokenAsType(0); 9341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert(Tok.is(tok::annot_typename) && 9351734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor "AnnotateTemplateIdTokenAsType isn't working properly"); 93631a19b6989bbf326d2de5ae12e712e2a65ca9c34Douglas Gregor if (Tok.getAnnotationValue()) 93731a19b6989bbf326d2de5ae12e712e2a65ca9c34Douglas Gregor Ty = Actions.ActOnTypenameType(TypenameLoc, SS, SourceLocation(), 93831a19b6989bbf326d2de5ae12e712e2a65ca9c34Douglas Gregor Tok.getAnnotationValue()); 93931a19b6989bbf326d2de5ae12e712e2a65ca9c34Douglas Gregor else 94031a19b6989bbf326d2de5ae12e712e2a65ca9c34Douglas Gregor Ty = true; 9411734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor } else { 9421734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor Diag(Tok, diag::err_expected_type_name_after_typename) 9431734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor << SS.getRange(); 9441734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor return false; 9451734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor } 9461734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor 94739d67117f896c6e2faa727671ef64b3c04b0e3feSebastian Redl SourceLocation EndLoc = Tok.getLastLoc(); 9481734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor Tok.setKind(tok::annot_typename); 94931a19b6989bbf326d2de5ae12e712e2a65ca9c34Douglas Gregor Tok.setAnnotationValue(Ty.isInvalid()? 0 : Ty.get()); 95039d67117f896c6e2faa727671ef64b3c04b0e3feSebastian Redl Tok.setAnnotationEndLoc(EndLoc); 9511734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor Tok.setLocation(TypenameLoc); 9521734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor PP.AnnotateCachedTokens(Tok); 9531734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor return true; 954d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor } 955d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor 956ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall // Remembers whether the token was originally a scope annotation. 957ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall bool wasScopeAnnotation = Tok.is(tok::annot_cxxscope); 958ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall 959eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis CXXScopeSpec SS; 9604bdd91c09fd59e0c154d759288beff300e31e1d0Argyrios Kyrtzidis if (getLang().CPlusPlus) 9612dd078ae50ff7be1fb25ebeedde45e9ab691a4f0Douglas Gregor ParseOptionalCXXScopeSpecifier(SS, /*ObjectType=*/0, EnteringContext); 962eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis 963eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis if (Tok.is(tok::identifier)) { 964608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner // Determine whether the identifier is a type name. 9651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (TypeTy *Ty = Actions.getTypeName(*Tok.getIdentifierInfo(), 966b696ea3a0693798daeafd896d77f0b8f1fec3cc5Douglas Gregor Tok.getLocation(), CurScope, &SS)) { 967608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner // This is a typename. Replace the current token in-place with an 968608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner // annotation type token. 969b31757b68afe06ba442a05775d08fe7aa0f6f889Chris Lattner Tok.setKind(tok::annot_typename); 970608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner Tok.setAnnotationValue(Ty); 971608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner Tok.setAnnotationEndLoc(Tok.getLocation()); 972608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner if (SS.isNotEmpty()) // it was a C++ qualified type name. 973608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner Tok.setLocation(SS.getBeginLoc()); 9741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 975608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner // In case the tokens were cached, have Preprocessor replace 976608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner // them with the annotation token. 977608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner PP.AnnotateCachedTokens(Tok); 978608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner return true; 9791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 98039a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor 98139a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor if (!getLang().CPlusPlus) { 982608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner // If we're in C, we can't have :: tokens at all (the lexer won't return 983608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner // them). If the identifier is not a type, then it can't be scope either, 9841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // just early exit. 985608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner return false; 986eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis } 9871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 98839a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // If this is a template-id, annotate with a template-id or type token. 98955f6b14230c94272efbbcdd89a92224c8db9f225Douglas Gregor if (NextToken().is(tok::less)) { 9907532dc66648cfe7432c9fe66dec5225f0ab301c6Douglas Gregor TemplateTy Template; 991014e88d94ff83e3aad4e33b16413a2d1817ec208Douglas Gregor UnqualifiedId TemplateName; 992014e88d94ff83e3aad4e33b16413a2d1817ec208Douglas Gregor TemplateName.setIdentifier(Tok.getIdentifierInfo(), Tok.getLocation()); 9931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (TemplateNameKind TNK 994014e88d94ff83e3aad4e33b16413a2d1817ec208Douglas Gregor = Actions.isTemplateName(CurScope, SS, TemplateName, 9951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /*ObjectType=*/0, EnteringContext, 996ca1bdd7c269a2390d43c040a60511edd017ee130Douglas Gregor Template)) { 997ca1bdd7c269a2390d43c040a60511edd017ee130Douglas Gregor // Consume the identifier. 998ca1bdd7c269a2390d43c040a60511edd017ee130Douglas Gregor ConsumeToken(); 999ca1bdd7c269a2390d43c040a60511edd017ee130Douglas Gregor if (AnnotateTemplateIdToken(Template, TNK, &SS, TemplateName)) { 1000c8e27cc402043ec86c1698c09e4ee9e415b16207Chris Lattner // If an unrecoverable error occurred, we need to return true here, 1001c8e27cc402043ec86c1698c09e4ee9e415b16207Chris Lattner // because the token stream is in a damaged state. We may not return 1002c8e27cc402043ec86c1698c09e4ee9e415b16207Chris Lattner // a valid identifier. 1003c8e27cc402043ec86c1698c09e4ee9e415b16207Chris Lattner return Tok.isNot(tok::identifier); 1004c8e27cc402043ec86c1698c09e4ee9e415b16207Chris Lattner } 1005ca1bdd7c269a2390d43c040a60511edd017ee130Douglas Gregor } 100655f6b14230c94272efbbcdd89a92224c8db9f225Douglas Gregor } 1007d6fb7ef028d9aa0b3e8943b7bc049c524437b407Douglas Gregor 100839a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // The current token, which is either an identifier or a 100939a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // template-id, is not part of the annotation. Fall through to 101039a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // push that token back into the stream and complete the C++ scope 101139a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // specifier annotation. 10121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 1013eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis 101439a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor if (Tok.is(tok::annot_template_id)) { 10151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump TemplateIdAnnotation *TemplateId 101639a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor = static_cast<TemplateIdAnnotation *>(Tok.getAnnotationValue()); 1017c45c232440dfafedca1a3773b904fb42609b1b19Douglas Gregor if (TemplateId->Kind == TNK_Type_template) { 101839a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // A template-id that refers to a type was parsed into a 101939a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // template-id annotation in a context where we weren't allowed 102039a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // to produce a type annotation token. Update the template-id 102139a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // annotation token to a type annotation token now. 102231a19b6989bbf326d2de5ae12e712e2a65ca9c34Douglas Gregor AnnotateTemplateIdTokenAsType(&SS); 102331a19b6989bbf326d2de5ae12e712e2a65ca9c34Douglas Gregor return true; 102439a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor } 102539a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor } 1026d6fb7ef028d9aa0b3e8943b7bc049c524437b407Douglas Gregor 10276ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner if (SS.isEmpty()) 10283c9028a5e8dfb120c0d917849a1f79c091a98b88Eli Friedman return Tok.isNot(tok::identifier) && Tok.isNot(tok::coloncolon); 10291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10306ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner // A C++ scope specifier that isn't followed by a typename. 10316ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner // Push the current token back into the token stream (or revert it if it is 10326ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner // cached) and use an annotation scope token for current token. 10336ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner if (PP.isBacktrackEnabled()) 10346ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner PP.RevertCachedTokens(1); 10356ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner else 10366ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner PP.EnterToken(Tok); 10376ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner Tok.setKind(tok::annot_cxxscope); 10383507369940bfb269551bfa1fec812481f60e3552Douglas Gregor Tok.setAnnotationValue(SS.getScopeRep()); 10396ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner Tok.setAnnotationRange(SS.getRange()); 10406ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner 1041ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall // In case the tokens were cached, have Preprocessor replace them 1042ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall // with the annotation token. We don't need to do this if we've 1043ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall // just reverted back to the state we were in before being called. 1044ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall if (!wasScopeAnnotation) 1045ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall PP.AnnotateCachedTokens(Tok); 1046a7bc7c880f86bc180684ef032d06df51bcae7a23Chris Lattner return true; 1047eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis} 1048eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis 1049eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// TryAnnotateScopeToken - Like TryAnnotateTypeOrScopeToken but only 105039a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor/// annotates C++ scope specifiers and template-ids. This returns 1051c8e27cc402043ec86c1698c09e4ee9e415b16207Chris Lattner/// true if the token was annotated or there was an error that could not be 1052c8e27cc402043ec86c1698c09e4ee9e415b16207Chris Lattner/// recovered from. 10531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// 105455a7cefc846765ac7d142a63f773747a20518d71Chris Lattner/// Note that this routine emits an error if you call it with ::new or ::delete 105555a7cefc846765ac7d142a63f773747a20518d71Chris Lattner/// as the current tokens, so only call it in contexts where these are invalid. 1056495c35d291da48c4f5655bbb54d15128ddde0d4dDouglas Gregorbool Parser::TryAnnotateCXXScopeToken(bool EnteringContext) { 10574bdd91c09fd59e0c154d759288beff300e31e1d0Argyrios Kyrtzidis assert(getLang().CPlusPlus && 10586ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner "Call sites of this function should be guarded by checking for C++"); 10597452c6fc567ea1799f617395d0fa4c7ed075e5d9Chris Lattner assert((Tok.is(tok::identifier) || Tok.is(tok::coloncolon)) && 10607452c6fc567ea1799f617395d0fa4c7ed075e5d9Chris Lattner "Cannot be a type or scope token!"); 1061eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis 10624bdd91c09fd59e0c154d759288beff300e31e1d0Argyrios Kyrtzidis CXXScopeSpec SS; 10632dd078ae50ff7be1fb25ebeedde45e9ab691a4f0Douglas Gregor if (!ParseOptionalCXXScopeSpecifier(SS, /*ObjectType=*/0, EnteringContext)) 1064bd87c0bd2358498eae71c6cb24e57d2c884c74aaChris Lattner // If the token left behind is not an identifier, we either had an error or 1065bd87c0bd2358498eae71c6cb24e57d2c884c74aaChris Lattner // successfully turned it into an annotation token. 1066bd87c0bd2358498eae71c6cb24e57d2c884c74aaChris Lattner return Tok.isNot(tok::identifier); 1067eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis 10686ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner // Push the current token back into the token stream (or revert it if it is 10696ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner // cached) and use an annotation scope token for current token. 10706ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner if (PP.isBacktrackEnabled()) 10716ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner PP.RevertCachedTokens(1); 10726ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner else 10736ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner PP.EnterToken(Tok); 10746ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner Tok.setKind(tok::annot_cxxscope); 10753507369940bfb269551bfa1fec812481f60e3552Douglas Gregor Tok.setAnnotationValue(SS.getScopeRep()); 10766ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner Tok.setAnnotationRange(SS.getRange()); 10776ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner 10786ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner // In case the tokens were cached, have Preprocessor replace them with the 10796ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner // annotation token. 10806ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner PP.AnnotateCachedTokens(Tok); 10815e02c47a7085831586344a9728763cb50540c7f7Chris Lattner return true; 1082eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis} 10836c94a6d77f456f23ecd4c2061e6413786b5e6571John McCall 10846c94a6d77f456f23ecd4c2061e6413786b5e6571John McCall// Anchor the Parser::FieldCallback vtable to this translation unit. 10856c94a6d77f456f23ecd4c2061e6413786b5e6571John McCall// We use a spurious method instead of the destructor because 10866c94a6d77f456f23ecd4c2061e6413786b5e6571John McCall// destroying FieldCallbacks can actually be slightly 10876c94a6d77f456f23ecd4c2061e6413786b5e6571John McCall// performance-sensitive. 10886c94a6d77f456f23ecd4c2061e6413786b5e6571John McCallvoid Parser::FieldCallback::_anchor() { 10896c94a6d77f456f23ecd4c2061e6413786b5e6571John McCall} 1090