Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1 | //===--- Parser.cpp - C Language Family Parser ----------------------------===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
Chris Lattner | 0bc735f | 2007-12-29 19:59:25 +0000 | [diff] [blame] | 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | // |
| 10 | // This file implements the Parser interfaces. |
| 11 | // |
| 12 | //===----------------------------------------------------------------------===// |
| 13 | |
| 14 | #include "clang/Parse/Parser.h" |
Chris Lattner | 500d329 | 2009-01-29 05:15:15 +0000 | [diff] [blame] | 15 | #include "clang/Parse/ParseDiagnostic.h" |
John McCall | 1951085 | 2010-08-20 18:27:03 +0000 | [diff] [blame] | 16 | #include "clang/Sema/DeclSpec.h" |
| 17 | #include "clang/Sema/Scope.h" |
| 18 | #include "clang/Sema/ParsedTemplate.h" |
Chris Lattner | 0102c30 | 2009-03-05 07:24:28 +0000 | [diff] [blame] | 19 | #include "llvm/Support/raw_ostream.h" |
Chris Lattner | d167ca0 | 2009-12-10 00:21:05 +0000 | [diff] [blame] | 20 | #include "RAIIObjectsForParser.h" |
Daniel Dunbar | fcdd8fe | 2008-10-04 19:21:03 +0000 | [diff] [blame] | 21 | #include "ParsePragma.h" |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 22 | using namespace clang; |
| 23 | |
John McCall | f312b1e | 2010-08-26 23:41:50 +0000 | [diff] [blame] | 24 | Parser::Parser(Preprocessor &pp, Sema &actions) |
Ted Kremenek | 614f96a | 2011-03-22 01:15:17 +0000 | [diff] [blame] | 25 | : PP(pp), Actions(actions), Diags(PP.getDiagnostics()), |
Douglas Gregor | 0fbda68 | 2010-09-15 14:51:05 +0000 | [diff] [blame] | 26 | GreaterThanIsOperator(true), ColonIsSacred(false), |
| 27 | InMessageExpression(false), TemplateParameterDepth(0) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 28 | Tok.setKind(tok::eof); |
Douglas Gregor | 23c94db | 2010-07-02 17:43:08 +0000 | [diff] [blame] | 29 | Actions.CurScope = 0; |
Chris Lattner | 9e344c6 | 2007-07-15 00:04:39 +0000 | [diff] [blame] | 30 | NumCachedScopes = 0; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 31 | ParenCount = BracketCount = BraceCount = 0; |
John McCall | d226f65 | 2010-08-21 09:40:31 +0000 | [diff] [blame] | 32 | ObjCImpDecl = 0; |
Daniel Dunbar | fcdd8fe | 2008-10-04 19:21:03 +0000 | [diff] [blame] | 33 | |
| 34 | // Add #pragma handlers. These are removed and destroyed in the |
| 35 | // destructor. |
Daniel Dunbar | cbb98ed | 2010-07-31 19:17:07 +0000 | [diff] [blame] | 36 | AlignHandler.reset(new PragmaAlignHandler(actions)); |
| 37 | PP.AddPragmaHandler(AlignHandler.get()); |
| 38 | |
Eli Friedman | aa8b0d1 | 2010-08-05 06:57:20 +0000 | [diff] [blame] | 39 | GCCVisibilityHandler.reset(new PragmaGCCVisibilityHandler(actions)); |
| 40 | PP.AddPragmaHandler("GCC", GCCVisibilityHandler.get()); |
| 41 | |
Argyrios Kyrtzidis | 9b36c3f | 2010-07-13 09:07:17 +0000 | [diff] [blame] | 42 | OptionsHandler.reset(new PragmaOptionsHandler(actions)); |
| 43 | PP.AddPragmaHandler(OptionsHandler.get()); |
Daniel Dunbar | 861800c | 2010-05-26 23:29:06 +0000 | [diff] [blame] | 44 | |
Argyrios Kyrtzidis | 9b36c3f | 2010-07-13 09:07:17 +0000 | [diff] [blame] | 45 | PackHandler.reset(new PragmaPackHandler(actions)); |
| 46 | PP.AddPragmaHandler(PackHandler.get()); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 47 | |
Argyrios Kyrtzidis | 9b36c3f | 2010-07-13 09:07:17 +0000 | [diff] [blame] | 48 | UnusedHandler.reset(new PragmaUnusedHandler(actions, *this)); |
| 49 | PP.AddPragmaHandler(UnusedHandler.get()); |
Eli Friedman | 9991479 | 2009-06-05 00:49:58 +0000 | [diff] [blame] | 50 | |
Argyrios Kyrtzidis | 9b36c3f | 2010-07-13 09:07:17 +0000 | [diff] [blame] | 51 | WeakHandler.reset(new PragmaWeakHandler(actions)); |
| 52 | PP.AddPragmaHandler(WeakHandler.get()); |
Peter Collingbourne | 321b817 | 2011-02-14 01:42:35 +0000 | [diff] [blame] | 53 | |
| 54 | FPContractHandler.reset(new PragmaFPContractHandler(actions, *this)); |
| 55 | PP.AddPragmaHandler("STDC", FPContractHandler.get()); |
Peter Collingbourne | f315fa8 | 2011-02-14 01:42:53 +0000 | [diff] [blame] | 56 | |
| 57 | if (getLang().OpenCL) { |
| 58 | OpenCLExtensionHandler.reset( |
| 59 | new PragmaOpenCLExtensionHandler(actions, *this)); |
| 60 | PP.AddPragmaHandler("OPENCL", OpenCLExtensionHandler.get()); |
| 61 | |
| 62 | PP.AddPragmaHandler("OPENCL", FPContractHandler.get()); |
| 63 | } |
Douglas Gregor | f44e854 | 2010-08-24 19:08:16 +0000 | [diff] [blame] | 64 | |
| 65 | PP.setCodeCompletionHandler(*this); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 66 | } |
| 67 | |
Chris Lattner | 0102c30 | 2009-03-05 07:24:28 +0000 | [diff] [blame] | 68 | /// If a crash happens while the parser is active, print out a line indicating |
| 69 | /// what the current token is. |
| 70 | void PrettyStackTraceParserEntry::print(llvm::raw_ostream &OS) const { |
| 71 | const Token &Tok = P.getCurToken(); |
Chris Lattner | ddcbc0a | 2009-03-05 07:27:50 +0000 | [diff] [blame] | 72 | if (Tok.is(tok::eof)) { |
Chris Lattner | 0102c30 | 2009-03-05 07:24:28 +0000 | [diff] [blame] | 73 | OS << "<eof> parser at end of file\n"; |
| 74 | return; |
| 75 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 76 | |
Chris Lattner | ddcbc0a | 2009-03-05 07:27:50 +0000 | [diff] [blame] | 77 | if (Tok.getLocation().isInvalid()) { |
| 78 | OS << "<unknown> parser at unknown location\n"; |
| 79 | return; |
| 80 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 81 | |
Chris Lattner | 0102c30 | 2009-03-05 07:24:28 +0000 | [diff] [blame] | 82 | const Preprocessor &PP = P.getPreprocessor(); |
| 83 | Tok.getLocation().print(OS, PP.getSourceManager()); |
Daniel Dunbar | 9fa31dd | 2009-10-17 06:13:04 +0000 | [diff] [blame] | 84 | if (Tok.isAnnotation()) |
| 85 | OS << ": at annotation token \n"; |
| 86 | else |
| 87 | OS << ": current parser token '" << PP.getSpelling(Tok) << "'\n"; |
Douglas Gregor | f780abc | 2008-12-30 03:27:21 +0000 | [diff] [blame] | 88 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 89 | |
Chris Lattner | 0102c30 | 2009-03-05 07:24:28 +0000 | [diff] [blame] | 90 | |
Chris Lattner | 3cbfe2c | 2008-11-22 00:59:29 +0000 | [diff] [blame] | 91 | DiagnosticBuilder Parser::Diag(SourceLocation Loc, unsigned DiagID) { |
Argyrios Kyrtzidis | 33e4e70 | 2010-11-18 20:06:41 +0000 | [diff] [blame] | 92 | return Diags.Report(Loc, DiagID); |
Chris Lattner | 1ab3b96 | 2008-11-18 07:48:38 +0000 | [diff] [blame] | 93 | } |
| 94 | |
Chris Lattner | 3cbfe2c | 2008-11-22 00:59:29 +0000 | [diff] [blame] | 95 | DiagnosticBuilder Parser::Diag(const Token &Tok, unsigned DiagID) { |
Chris Lattner | 1ab3b96 | 2008-11-18 07:48:38 +0000 | [diff] [blame] | 96 | return Diag(Tok.getLocation(), DiagID); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 97 | } |
| 98 | |
Douglas Gregor | 4b2d3f7 | 2009-02-26 21:00:50 +0000 | [diff] [blame] | 99 | /// \brief Emits a diagnostic suggesting parentheses surrounding a |
| 100 | /// given range. |
| 101 | /// |
| 102 | /// \param Loc The location where we'll emit the diagnostic. |
| 103 | /// \param Loc The kind of diagnostic to emit. |
| 104 | /// \param ParenRange Source range enclosing code that should be parenthesized. |
| 105 | void Parser::SuggestParentheses(SourceLocation Loc, unsigned DK, |
| 106 | SourceRange ParenRange) { |
Douglas Gregor | b2fb6de | 2009-02-27 17:53:17 +0000 | [diff] [blame] | 107 | SourceLocation EndLoc = PP.getLocForEndOfToken(ParenRange.getEnd()); |
| 108 | if (!ParenRange.getEnd().isFileID() || EndLoc.isInvalid()) { |
Douglas Gregor | 4b2d3f7 | 2009-02-26 21:00:50 +0000 | [diff] [blame] | 109 | // We can't display the parentheses, so just dig the |
| 110 | // warning/error and return. |
| 111 | Diag(Loc, DK); |
| 112 | return; |
| 113 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 114 | |
| 115 | Diag(Loc, DK) |
Douglas Gregor | 849b243 | 2010-03-31 17:46:05 +0000 | [diff] [blame] | 116 | << FixItHint::CreateInsertion(ParenRange.getBegin(), "(") |
| 117 | << FixItHint::CreateInsertion(EndLoc, ")"); |
Douglas Gregor | 4b2d3f7 | 2009-02-26 21:00:50 +0000 | [diff] [blame] | 118 | } |
| 119 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 120 | /// MatchRHSPunctuation - For punctuation with a LHS and RHS (e.g. '['/']'), |
| 121 | /// this helper function matches and consumes the specified RHS token if |
| 122 | /// present. If not present, it emits the specified diagnostic indicating |
| 123 | /// that the parser failed to match the RHS of the token at LHSLoc. LHSName |
| 124 | /// should be the name of the unmatched LHS token. |
| 125 | SourceLocation Parser::MatchRHSPunctuation(tok::TokenKind RHSTok, |
| 126 | SourceLocation LHSLoc) { |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 127 | |
Chris Lattner | 0007322 | 2007-10-09 17:23:58 +0000 | [diff] [blame] | 128 | if (Tok.is(RHSTok)) |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 129 | return ConsumeAnyToken(); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 130 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 131 | SourceLocation R = Tok.getLocation(); |
| 132 | const char *LHSName = "unknown"; |
| 133 | diag::kind DID = diag::err_parse_error; |
| 134 | switch (RHSTok) { |
| 135 | default: break; |
| 136 | case tok::r_paren : LHSName = "("; DID = diag::err_expected_rparen; break; |
| 137 | case tok::r_brace : LHSName = "{"; DID = diag::err_expected_rbrace; break; |
| 138 | case tok::r_square: LHSName = "["; DID = diag::err_expected_rsquare; break; |
| 139 | case tok::greater: LHSName = "<"; DID = diag::err_expected_greater; break; |
Peter Collingbourne | bf36e25 | 2011-02-09 21:12:02 +0000 | [diff] [blame] | 140 | case tok::greatergreatergreater: |
| 141 | LHSName = "<<<"; DID = diag::err_expected_ggg; break; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 142 | } |
| 143 | Diag(Tok, DID); |
Chris Lattner | 28eb7e9 | 2008-11-23 23:17:07 +0000 | [diff] [blame] | 144 | Diag(LHSLoc, diag::note_matching) << LHSName; |
Chris Lattner | 9fc1873 | 2010-07-12 01:48:28 +0000 | [diff] [blame] | 145 | SkipUntil(RHSTok); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 146 | return R; |
| 147 | } |
| 148 | |
John McCall | 837b1a3 | 2010-09-07 18:31:03 +0000 | [diff] [blame] | 149 | static bool IsCommonTypo(tok::TokenKind ExpectedTok, const Token &Tok) { |
| 150 | switch (ExpectedTok) { |
| 151 | case tok::semi: return Tok.is(tok::colon); // : for ; |
| 152 | default: return false; |
| 153 | } |
| 154 | } |
| 155 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 156 | /// ExpectAndConsume - The parser expects that 'ExpectedTok' is next in the |
| 157 | /// input. If so, it is consumed and false is returned. |
| 158 | /// |
| 159 | /// If the input is malformed, this emits the specified diagnostic. Next, if |
| 160 | /// SkipToTok is specified, it calls SkipUntil(SkipToTok). Finally, true is |
| 161 | /// returned. |
| 162 | bool Parser::ExpectAndConsume(tok::TokenKind ExpectedTok, unsigned DiagID, |
| 163 | const char *Msg, tok::TokenKind SkipToTok) { |
Douglas Gregor | dc84534 | 2010-05-25 05:58:43 +0000 | [diff] [blame] | 164 | if (Tok.is(ExpectedTok) || Tok.is(tok::code_completion)) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 165 | ConsumeAnyToken(); |
| 166 | return false; |
| 167 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 168 | |
John McCall | 837b1a3 | 2010-09-07 18:31:03 +0000 | [diff] [blame] | 169 | // Detect common single-character typos and resume. |
| 170 | if (IsCommonTypo(ExpectedTok, Tok)) { |
| 171 | SourceLocation Loc = Tok.getLocation(); |
| 172 | Diag(Loc, DiagID) |
| 173 | << Msg |
| 174 | << FixItHint::CreateReplacement(SourceRange(Loc), |
| 175 | getTokenSimpleSpelling(ExpectedTok)); |
| 176 | ConsumeAnyToken(); |
| 177 | |
| 178 | // Pretend there wasn't a problem. |
| 179 | return false; |
| 180 | } |
| 181 | |
Douglas Gregor | 4b2d3f7 | 2009-02-26 21:00:50 +0000 | [diff] [blame] | 182 | const char *Spelling = 0; |
Douglas Gregor | b2fb6de | 2009-02-27 17:53:17 +0000 | [diff] [blame] | 183 | SourceLocation EndLoc = PP.getLocForEndOfToken(PrevTokLocation); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 184 | if (EndLoc.isValid() && |
Douglas Gregor | b2fb6de | 2009-02-27 17:53:17 +0000 | [diff] [blame] | 185 | (Spelling = tok::getTokenSimpleSpelling(ExpectedTok))) { |
Douglas Gregor | 4b2d3f7 | 2009-02-26 21:00:50 +0000 | [diff] [blame] | 186 | // Show what code to insert to fix this problem. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 187 | Diag(EndLoc, DiagID) |
Douglas Gregor | 4b2d3f7 | 2009-02-26 21:00:50 +0000 | [diff] [blame] | 188 | << Msg |
Douglas Gregor | 849b243 | 2010-03-31 17:46:05 +0000 | [diff] [blame] | 189 | << FixItHint::CreateInsertion(EndLoc, Spelling); |
Douglas Gregor | 4b2d3f7 | 2009-02-26 21:00:50 +0000 | [diff] [blame] | 190 | } else |
| 191 | Diag(Tok, DiagID) << Msg; |
| 192 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 193 | if (SkipToTok != tok::unknown) |
| 194 | SkipUntil(SkipToTok); |
| 195 | return true; |
| 196 | } |
| 197 | |
Douglas Gregor | 9ba23b4 | 2010-09-07 15:23:11 +0000 | [diff] [blame] | 198 | bool Parser::ExpectAndConsumeSemi(unsigned DiagID) { |
| 199 | if (Tok.is(tok::semi) || Tok.is(tok::code_completion)) { |
| 200 | ConsumeAnyToken(); |
| 201 | return false; |
| 202 | } |
| 203 | |
| 204 | if ((Tok.is(tok::r_paren) || Tok.is(tok::r_square)) && |
| 205 | NextToken().is(tok::semi)) { |
| 206 | Diag(Tok, diag::err_extraneous_token_before_semi) |
| 207 | << PP.getSpelling(Tok) |
| 208 | << FixItHint::CreateRemoval(Tok.getLocation()); |
| 209 | ConsumeAnyToken(); // The ')' or ']'. |
| 210 | ConsumeToken(); // The ';'. |
| 211 | return false; |
| 212 | } |
| 213 | |
| 214 | return ExpectAndConsume(tok::semi, DiagID); |
| 215 | } |
| 216 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 217 | //===----------------------------------------------------------------------===// |
| 218 | // Error recovery. |
| 219 | //===----------------------------------------------------------------------===// |
| 220 | |
| 221 | /// SkipUntil - Read tokens until we get to the specified token, then consume |
Chris Lattner | 012cf46 | 2007-07-24 17:03:04 +0000 | [diff] [blame] | 222 | /// it (unless DontConsume is true). Because we cannot guarantee that the |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 223 | /// token will ever occur, this skips to the next token, or to some likely |
| 224 | /// good stopping point. If StopAtSemi is true, skipping will stop at a ';' |
| 225 | /// character. |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 226 | /// |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 227 | /// If SkipUntil finds the specified token, it returns true, otherwise it |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 228 | /// returns false. |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 229 | bool Parser::SkipUntil(const tok::TokenKind *Toks, unsigned NumToks, |
Argyrios Kyrtzidis | 3437f1f | 2011-01-03 19:44:02 +0000 | [diff] [blame] | 230 | bool StopAtSemi, bool DontConsume, |
| 231 | bool StopAtCodeCompletion) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 232 | // We always want this function to skip at least one token if the first token |
| 233 | // isn't T and if not at EOF. |
| 234 | bool isFirstTokenSkipped = true; |
| 235 | while (1) { |
| 236 | // If we found one of the tokens, stop and return true. |
| 237 | for (unsigned i = 0; i != NumToks; ++i) { |
Chris Lattner | 0007322 | 2007-10-09 17:23:58 +0000 | [diff] [blame] | 238 | if (Tok.is(Toks[i])) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 239 | if (DontConsume) { |
| 240 | // Noop, don't consume the token. |
| 241 | } else { |
| 242 | ConsumeAnyToken(); |
| 243 | } |
| 244 | return true; |
| 245 | } |
| 246 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 247 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 248 | switch (Tok.getKind()) { |
| 249 | case tok::eof: |
| 250 | // Ran out of tokens. |
| 251 | return false; |
Douglas Gregor | dc84534 | 2010-05-25 05:58:43 +0000 | [diff] [blame] | 252 | |
| 253 | case tok::code_completion: |
Argyrios Kyrtzidis | 3437f1f | 2011-01-03 19:44:02 +0000 | [diff] [blame] | 254 | if (!StopAtCodeCompletion) |
| 255 | ConsumeToken(); |
Douglas Gregor | dc84534 | 2010-05-25 05:58:43 +0000 | [diff] [blame] | 256 | return false; |
| 257 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 258 | case tok::l_paren: |
| 259 | // Recursively skip properly-nested parens. |
| 260 | ConsumeParen(); |
Argyrios Kyrtzidis | 3437f1f | 2011-01-03 19:44:02 +0000 | [diff] [blame] | 261 | SkipUntil(tok::r_paren, false, false, StopAtCodeCompletion); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 262 | break; |
| 263 | case tok::l_square: |
| 264 | // Recursively skip properly-nested square brackets. |
| 265 | ConsumeBracket(); |
Argyrios Kyrtzidis | 3437f1f | 2011-01-03 19:44:02 +0000 | [diff] [blame] | 266 | SkipUntil(tok::r_square, false, false, StopAtCodeCompletion); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 267 | break; |
| 268 | case tok::l_brace: |
| 269 | // Recursively skip properly-nested braces. |
| 270 | ConsumeBrace(); |
Argyrios Kyrtzidis | 3437f1f | 2011-01-03 19:44:02 +0000 | [diff] [blame] | 271 | SkipUntil(tok::r_brace, false, false, StopAtCodeCompletion); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 272 | break; |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 273 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 274 | // Okay, we found a ']' or '}' or ')', which we think should be balanced. |
| 275 | // Since the user wasn't looking for this token (if they were, it would |
| 276 | // already be handled), this isn't balanced. If there is a LHS token at a |
| 277 | // higher level, we will assume that this matches the unbalanced token |
| 278 | // and return it. Otherwise, this is a spurious RHS token, which we skip. |
| 279 | case tok::r_paren: |
| 280 | if (ParenCount && !isFirstTokenSkipped) |
| 281 | return false; // Matches something. |
| 282 | ConsumeParen(); |
| 283 | break; |
| 284 | case tok::r_square: |
| 285 | if (BracketCount && !isFirstTokenSkipped) |
| 286 | return false; // Matches something. |
| 287 | ConsumeBracket(); |
| 288 | break; |
| 289 | case tok::r_brace: |
| 290 | if (BraceCount && !isFirstTokenSkipped) |
| 291 | return false; // Matches something. |
| 292 | ConsumeBrace(); |
| 293 | break; |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 294 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 295 | case tok::string_literal: |
| 296 | case tok::wide_string_literal: |
| 297 | ConsumeStringToken(); |
| 298 | break; |
Fariborz Jahanian | 55edca9 | 2011-02-23 00:11:21 +0000 | [diff] [blame] | 299 | |
| 300 | case tok::at: |
| 301 | return false; |
| 302 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 303 | case tok::semi: |
| 304 | if (StopAtSemi) |
| 305 | return false; |
| 306 | // FALL THROUGH. |
| 307 | default: |
| 308 | // Skip this token. |
| 309 | ConsumeToken(); |
| 310 | break; |
| 311 | } |
| 312 | isFirstTokenSkipped = false; |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 313 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 314 | } |
| 315 | |
| 316 | //===----------------------------------------------------------------------===// |
| 317 | // Scope manipulation |
| 318 | //===----------------------------------------------------------------------===// |
| 319 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 320 | /// EnterScope - Start a new scope. |
| 321 | void Parser::EnterScope(unsigned ScopeFlags) { |
Chris Lattner | 9e344c6 | 2007-07-15 00:04:39 +0000 | [diff] [blame] | 322 | if (NumCachedScopes) { |
| 323 | Scope *N = ScopeCache[--NumCachedScopes]; |
Douglas Gregor | 23c94db | 2010-07-02 17:43:08 +0000 | [diff] [blame] | 324 | N->Init(getCurScope(), ScopeFlags); |
| 325 | Actions.CurScope = N; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 326 | } else { |
Argyrios Kyrtzidis | 9c4eb1f | 2010-11-19 00:19:12 +0000 | [diff] [blame] | 327 | Actions.CurScope = new Scope(getCurScope(), ScopeFlags, Diags); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 328 | } |
| 329 | } |
| 330 | |
| 331 | /// ExitScope - Pop a scope off the scope stack. |
| 332 | void Parser::ExitScope() { |
Douglas Gregor | 23c94db | 2010-07-02 17:43:08 +0000 | [diff] [blame] | 333 | assert(getCurScope() && "Scope imbalance!"); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 334 | |
Chris Lattner | 90ae68a | 2007-10-09 20:37:18 +0000 | [diff] [blame] | 335 | // Inform the actions module that this scope is going away if there are any |
| 336 | // decls in it. |
Douglas Gregor | 23c94db | 2010-07-02 17:43:08 +0000 | [diff] [blame] | 337 | if (!getCurScope()->decl_empty()) |
| 338 | Actions.ActOnPopScope(Tok.getLocation(), getCurScope()); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 339 | |
Douglas Gregor | 23c94db | 2010-07-02 17:43:08 +0000 | [diff] [blame] | 340 | Scope *OldScope = getCurScope(); |
| 341 | Actions.CurScope = OldScope->getParent(); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 342 | |
Chris Lattner | 9e344c6 | 2007-07-15 00:04:39 +0000 | [diff] [blame] | 343 | if (NumCachedScopes == ScopeCacheSize) |
| 344 | delete OldScope; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 345 | else |
Chris Lattner | 9e344c6 | 2007-07-15 00:04:39 +0000 | [diff] [blame] | 346 | ScopeCache[NumCachedScopes++] = OldScope; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 347 | } |
| 348 | |
| 349 | |
| 350 | |
| 351 | |
| 352 | //===----------------------------------------------------------------------===// |
| 353 | // C99 6.9: External Definitions. |
| 354 | //===----------------------------------------------------------------------===// |
| 355 | |
| 356 | Parser::~Parser() { |
| 357 | // If we still have scopes active, delete the scope tree. |
Douglas Gregor | 23c94db | 2010-07-02 17:43:08 +0000 | [diff] [blame] | 358 | delete getCurScope(); |
| 359 | Actions.CurScope = 0; |
| 360 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 361 | // Free the scope cache. |
Chris Lattner | 9e344c6 | 2007-07-15 00:04:39 +0000 | [diff] [blame] | 362 | for (unsigned i = 0, e = NumCachedScopes; i != e; ++i) |
| 363 | delete ScopeCache[i]; |
Daniel Dunbar | fcdd8fe | 2008-10-04 19:21:03 +0000 | [diff] [blame] | 364 | |
| 365 | // Remove the pragma handlers we installed. |
Daniel Dunbar | cbb98ed | 2010-07-31 19:17:07 +0000 | [diff] [blame] | 366 | PP.RemovePragmaHandler(AlignHandler.get()); |
| 367 | AlignHandler.reset(); |
Eli Friedman | aa8b0d1 | 2010-08-05 06:57:20 +0000 | [diff] [blame] | 368 | PP.RemovePragmaHandler("GCC", GCCVisibilityHandler.get()); |
| 369 | GCCVisibilityHandler.reset(); |
Argyrios Kyrtzidis | 9b36c3f | 2010-07-13 09:07:17 +0000 | [diff] [blame] | 370 | PP.RemovePragmaHandler(OptionsHandler.get()); |
Daniel Dunbar | 861800c | 2010-05-26 23:29:06 +0000 | [diff] [blame] | 371 | OptionsHandler.reset(); |
Argyrios Kyrtzidis | 9b36c3f | 2010-07-13 09:07:17 +0000 | [diff] [blame] | 372 | PP.RemovePragmaHandler(PackHandler.get()); |
Ted Kremenek | 4726d03 | 2009-03-23 22:28:25 +0000 | [diff] [blame] | 373 | PackHandler.reset(); |
Argyrios Kyrtzidis | 9b36c3f | 2010-07-13 09:07:17 +0000 | [diff] [blame] | 374 | PP.RemovePragmaHandler(UnusedHandler.get()); |
Ted Kremenek | 4726d03 | 2009-03-23 22:28:25 +0000 | [diff] [blame] | 375 | UnusedHandler.reset(); |
Argyrios Kyrtzidis | 9b36c3f | 2010-07-13 09:07:17 +0000 | [diff] [blame] | 376 | PP.RemovePragmaHandler(WeakHandler.get()); |
Eli Friedman | 9991479 | 2009-06-05 00:49:58 +0000 | [diff] [blame] | 377 | WeakHandler.reset(); |
Peter Collingbourne | f315fa8 | 2011-02-14 01:42:53 +0000 | [diff] [blame] | 378 | |
| 379 | if (getLang().OpenCL) { |
| 380 | PP.RemovePragmaHandler("OPENCL", OpenCLExtensionHandler.get()); |
| 381 | OpenCLExtensionHandler.reset(); |
| 382 | PP.RemovePragmaHandler("OPENCL", FPContractHandler.get()); |
| 383 | } |
| 384 | |
Peter Collingbourne | 321b817 | 2011-02-14 01:42:35 +0000 | [diff] [blame] | 385 | PP.RemovePragmaHandler("STDC", FPContractHandler.get()); |
| 386 | FPContractHandler.reset(); |
Douglas Gregor | f44e854 | 2010-08-24 19:08:16 +0000 | [diff] [blame] | 387 | PP.clearCodeCompletionHandler(); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 388 | } |
| 389 | |
| 390 | /// Initialize - Warm up the parser. |
| 391 | /// |
| 392 | void Parser::Initialize() { |
Chris Lattner | 31e0572 | 2007-08-26 06:24:45 +0000 | [diff] [blame] | 393 | // Create the translation unit scope. Install it as the current scope. |
Douglas Gregor | 23c94db | 2010-07-02 17:43:08 +0000 | [diff] [blame] | 394 | assert(getCurScope() == 0 && "A scope is already active?"); |
Chris Lattner | 31e0572 | 2007-08-26 06:24:45 +0000 | [diff] [blame] | 395 | EnterScope(Scope::DeclScope); |
Douglas Gregor | c1a3e5e | 2010-08-25 18:07:12 +0000 | [diff] [blame] | 396 | Actions.ActOnTranslationUnitScope(getCurScope()); |
| 397 | |
| 398 | // Prime the lexer look-ahead. |
| 399 | ConsumeToken(); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 400 | |
Chris Lattner | 0007322 | 2007-10-09 17:23:58 +0000 | [diff] [blame] | 401 | if (Tok.is(tok::eof) && |
Chris Lattner | f726175 | 2007-08-25 05:47:03 +0000 | [diff] [blame] | 402 | !getLang().CPlusPlus) // Empty source file is an extension in C |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 403 | Diag(Tok, diag::ext_empty_source_file); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 404 | |
Chris Lattner | 34870da | 2007-08-29 22:54:08 +0000 | [diff] [blame] | 405 | // Initialization for Objective-C context sensitive keywords recognition. |
Ted Kremenek | a526c5c | 2008-01-07 19:49:32 +0000 | [diff] [blame] | 406 | // Referenced in Parser::ParseObjCTypeQualifierList. |
Chris Lattner | 34870da | 2007-08-29 22:54:08 +0000 | [diff] [blame] | 407 | if (getLang().ObjC1) { |
Ted Kremenek | a526c5c | 2008-01-07 19:49:32 +0000 | [diff] [blame] | 408 | ObjCTypeQuals[objc_in] = &PP.getIdentifierTable().get("in"); |
| 409 | ObjCTypeQuals[objc_out] = &PP.getIdentifierTable().get("out"); |
| 410 | ObjCTypeQuals[objc_inout] = &PP.getIdentifierTable().get("inout"); |
| 411 | ObjCTypeQuals[objc_oneway] = &PP.getIdentifierTable().get("oneway"); |
| 412 | ObjCTypeQuals[objc_bycopy] = &PP.getIdentifierTable().get("bycopy"); |
| 413 | ObjCTypeQuals[objc_byref] = &PP.getIdentifierTable().get("byref"); |
Chris Lattner | 34870da | 2007-08-29 22:54:08 +0000 | [diff] [blame] | 414 | } |
Daniel Dunbar | 662e8b5 | 2008-08-14 22:04:54 +0000 | [diff] [blame] | 415 | |
Anders Carlsson | 7eeb4ec | 2011-01-20 03:47:08 +0000 | [diff] [blame] | 416 | Ident_final = 0; |
| 417 | Ident_override = 0; |
Anders Carlsson | 1f3b6fd | 2011-01-16 23:56:42 +0000 | [diff] [blame] | 418 | |
Daniel Dunbar | 662e8b5 | 2008-08-14 22:04:54 +0000 | [diff] [blame] | 419 | Ident_super = &PP.getIdentifierTable().get("super"); |
John Thompson | 82287d1 | 2010-02-05 00:12:22 +0000 | [diff] [blame] | 420 | |
| 421 | if (getLang().AltiVec) { |
| 422 | Ident_vector = &PP.getIdentifierTable().get("vector"); |
| 423 | Ident_pixel = &PP.getIdentifierTable().get("pixel"); |
| 424 | } |
Douglas Gregor | 0a0d2b1 | 2011-03-23 00:50:03 +0000 | [diff] [blame] | 425 | |
| 426 | Ident_introduced = 0; |
| 427 | Ident_deprecated = 0; |
| 428 | Ident_obsoleted = 0; |
Douglas Gregor | b53e417 | 2011-03-26 03:35:55 +0000 | [diff] [blame] | 429 | Ident_unavailable = 0; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 430 | } |
| 431 | |
| 432 | /// ParseTopLevelDecl - Parse one top-level declaration, return whatever the |
| 433 | /// action tells us to. This returns true if the EOF was encountered. |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 434 | bool Parser::ParseTopLevelDecl(DeclGroupPtrTy &Result) { |
Argyrios Kyrtzidis | b918d0f | 2011-01-17 18:58:44 +0000 | [diff] [blame] | 435 | |
| 436 | while (Tok.is(tok::annot_pragma_unused)) |
| 437 | HandlePragmaUnused(); |
| 438 | |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 439 | Result = DeclGroupPtrTy(); |
Chris Lattner | 9299f3f | 2008-08-23 03:19:52 +0000 | [diff] [blame] | 440 | if (Tok.is(tok::eof)) { |
| 441 | Actions.ActOnEndOfTranslationUnit(); |
| 442 | return true; |
| 443 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 444 | |
John McCall | 0b7e678 | 2011-03-24 11:26:52 +0000 | [diff] [blame] | 445 | ParsedAttributesWithRange attrs(AttrFactory); |
John McCall | 7f040a9 | 2010-12-24 02:08:15 +0000 | [diff] [blame] | 446 | MaybeParseCXX0XAttributes(attrs); |
| 447 | MaybeParseMicrosoftAttributes(attrs); |
Francois Pichet | 334d47e | 2010-10-11 12:59:39 +0000 | [diff] [blame] | 448 | |
John McCall | 7f040a9 | 2010-12-24 02:08:15 +0000 | [diff] [blame] | 449 | Result = ParseExternalDeclaration(attrs); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 450 | return false; |
| 451 | } |
| 452 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 453 | /// ParseTranslationUnit: |
| 454 | /// translation-unit: [C99 6.9] |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 455 | /// external-declaration |
| 456 | /// translation-unit external-declaration |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 457 | void Parser::ParseTranslationUnit() { |
Douglas Gregor | 8935b8b | 2008-12-10 06:34:36 +0000 | [diff] [blame] | 458 | Initialize(); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 459 | |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 460 | DeclGroupPtrTy Res; |
Steve Naroff | 89307ff | 2007-11-29 23:05:20 +0000 | [diff] [blame] | 461 | while (!ParseTopLevelDecl(Res)) |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 462 | /*parse them all*/; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 463 | |
Chris Lattner | 06f5485 | 2008-08-23 02:00:52 +0000 | [diff] [blame] | 464 | ExitScope(); |
Douglas Gregor | 23c94db | 2010-07-02 17:43:08 +0000 | [diff] [blame] | 465 | assert(getCurScope() == 0 && "Scope imbalance!"); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 466 | } |
| 467 | |
| 468 | /// ParseExternalDeclaration: |
Chris Lattner | 90b93d6 | 2008-12-08 21:59:01 +0000 | [diff] [blame] | 469 | /// |
Douglas Gregor | c19923d | 2008-11-21 16:10:08 +0000 | [diff] [blame] | 470 | /// external-declaration: [C99 6.9], declaration: [C++ dcl.dcl] |
Chris Lattner | c301815 | 2007-08-10 20:57:02 +0000 | [diff] [blame] | 471 | /// function-definition |
| 472 | /// declaration |
Douglas Gregor | a1d71ae | 2009-08-24 12:17:54 +0000 | [diff] [blame] | 473 | /// [C++0x] empty-declaration |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 474 | /// [GNU] asm-definition |
Chris Lattner | c301815 | 2007-08-10 20:57:02 +0000 | [diff] [blame] | 475 | /// [GNU] __extension__ external-declaration |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 476 | /// [OBJC] objc-class-definition |
| 477 | /// [OBJC] objc-class-declaration |
| 478 | /// [OBJC] objc-alias-declaration |
| 479 | /// [OBJC] objc-protocol-definition |
| 480 | /// [OBJC] objc-method-definition |
| 481 | /// [OBJC] @end |
Douglas Gregor | c19923d | 2008-11-21 16:10:08 +0000 | [diff] [blame] | 482 | /// [C++] linkage-specification |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 483 | /// [GNU] asm-definition: |
| 484 | /// simple-asm-expr ';' |
| 485 | /// |
Douglas Gregor | a1d71ae | 2009-08-24 12:17:54 +0000 | [diff] [blame] | 486 | /// [C++0x] empty-declaration: |
| 487 | /// ';' |
| 488 | /// |
Douglas Gregor | 45f9655 | 2009-09-04 06:33:52 +0000 | [diff] [blame] | 489 | /// [C++0x/GNU] 'extern' 'template' declaration |
John McCall | 7f040a9 | 2010-12-24 02:08:15 +0000 | [diff] [blame] | 490 | Parser::DeclGroupPtrTy |
| 491 | Parser::ParseExternalDeclaration(ParsedAttributesWithRange &attrs, |
| 492 | ParsingDeclSpec *DS) { |
Argyrios Kyrtzidis | 36d3680 | 2010-06-17 10:52:18 +0000 | [diff] [blame] | 493 | ParenBraceBracketBalancer BalancerRAIIObj(*this); |
| 494 | |
John McCall | d226f65 | 2010-08-21 09:40:31 +0000 | [diff] [blame] | 495 | Decl *SingleDecl = 0; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 496 | switch (Tok.getKind()) { |
| 497 | case tok::semi: |
Douglas Gregor | a1d71ae | 2009-08-24 12:17:54 +0000 | [diff] [blame] | 498 | if (!getLang().CPlusPlus0x) |
| 499 | Diag(Tok, diag::ext_top_level_semi) |
Douglas Gregor | 849b243 | 2010-03-31 17:46:05 +0000 | [diff] [blame] | 500 | << FixItHint::CreateRemoval(Tok.getLocation()); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 501 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 502 | ConsumeToken(); |
| 503 | // TODO: Invoke action for top-level semicolon. |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 504 | return DeclGroupPtrTy(); |
Chris Lattner | 90b93d6 | 2008-12-08 21:59:01 +0000 | [diff] [blame] | 505 | case tok::r_brace: |
| 506 | Diag(Tok, diag::err_expected_external_declaration); |
| 507 | ConsumeBrace(); |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 508 | return DeclGroupPtrTy(); |
Chris Lattner | 90b93d6 | 2008-12-08 21:59:01 +0000 | [diff] [blame] | 509 | case tok::eof: |
| 510 | Diag(Tok, diag::err_expected_external_declaration); |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 511 | return DeclGroupPtrTy(); |
Chris Lattner | c301815 | 2007-08-10 20:57:02 +0000 | [diff] [blame] | 512 | case tok::kw___extension__: { |
Chris Lattner | c46d1a1 | 2008-10-20 06:45:43 +0000 | [diff] [blame] | 513 | // __extension__ silences extension warnings in the subexpression. |
| 514 | ExtensionRAIIObject O(Diags); // Use RAII to do this. |
Chris Lattner | 39146d6 | 2008-10-20 06:51:33 +0000 | [diff] [blame] | 515 | ConsumeToken(); |
John McCall | 7f040a9 | 2010-12-24 02:08:15 +0000 | [diff] [blame] | 516 | return ParseExternalDeclaration(attrs); |
Chris Lattner | c301815 | 2007-08-10 20:57:02 +0000 | [diff] [blame] | 517 | } |
Anders Carlsson | dfab6cb | 2008-02-08 00:33:21 +0000 | [diff] [blame] | 518 | case tok::kw_asm: { |
John McCall | 7f040a9 | 2010-12-24 02:08:15 +0000 | [diff] [blame] | 519 | ProhibitAttributes(attrs); |
Sean Hunt | bbd37c6 | 2009-11-21 08:43:09 +0000 | [diff] [blame] | 520 | |
Abramo Bagnara | 21e006e | 2011-03-03 14:20:18 +0000 | [diff] [blame] | 521 | SourceLocation StartLoc = Tok.getLocation(); |
| 522 | SourceLocation EndLoc; |
| 523 | ExprResult Result(ParseSimpleAsm(&EndLoc)); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 524 | |
Anders Carlsson | 3f9424f | 2008-02-08 00:23:11 +0000 | [diff] [blame] | 525 | ExpectAndConsume(tok::semi, diag::err_expected_semi_after, |
| 526 | "top-level asm block"); |
Anders Carlsson | dfab6cb | 2008-02-08 00:33:21 +0000 | [diff] [blame] | 527 | |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 528 | if (Result.isInvalid()) |
| 529 | return DeclGroupPtrTy(); |
Abramo Bagnara | 21e006e | 2011-03-03 14:20:18 +0000 | [diff] [blame] | 530 | SingleDecl = Actions.ActOnFileScopeAsmDecl(Result.get(), StartLoc, EndLoc); |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 531 | break; |
Anders Carlsson | dfab6cb | 2008-02-08 00:33:21 +0000 | [diff] [blame] | 532 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 533 | case tok::at: |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 534 | // @ is not a legal token unless objc is enabled, no need to check for ObjC. |
| 535 | /// FIXME: ParseObjCAtDirectives should return a DeclGroup for things like |
| 536 | /// @class foo, bar; |
| 537 | SingleDecl = ParseObjCAtDirectives(); |
| 538 | break; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 539 | case tok::minus: |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 540 | case tok::plus: |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 541 | if (!getLang().ObjC1) { |
| 542 | Diag(Tok, diag::err_expected_external_declaration); |
| 543 | ConsumeToken(); |
| 544 | return DeclGroupPtrTy(); |
| 545 | } |
| 546 | SingleDecl = ParseObjCMethodDefinition(); |
| 547 | break; |
Douglas Gregor | 791215b | 2009-09-21 20:51:25 +0000 | [diff] [blame] | 548 | case tok::code_completion: |
Douglas Gregor | 23c94db | 2010-07-02 17:43:08 +0000 | [diff] [blame] | 549 | Actions.CodeCompleteOrdinaryName(getCurScope(), |
John McCall | f312b1e | 2010-08-26 23:41:50 +0000 | [diff] [blame] | 550 | ObjCImpDecl? Sema::PCC_ObjCImplementation |
| 551 | : Sema::PCC_Namespace); |
Douglas Gregor | dc84534 | 2010-05-25 05:58:43 +0000 | [diff] [blame] | 552 | ConsumeCodeCompletionToken(); |
John McCall | 7f040a9 | 2010-12-24 02:08:15 +0000 | [diff] [blame] | 553 | return ParseExternalDeclaration(attrs); |
Douglas Gregor | f780abc | 2008-12-30 03:27:21 +0000 | [diff] [blame] | 554 | case tok::kw_using: |
Chris Lattner | 8f08cb7 | 2007-08-25 06:57:03 +0000 | [diff] [blame] | 555 | case tok::kw_namespace: |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 556 | case tok::kw_typedef: |
Douglas Gregor | adcac88 | 2008-12-01 23:54:00 +0000 | [diff] [blame] | 557 | case tok::kw_template: |
| 558 | case tok::kw_export: // As in 'export template' |
Anders Carlsson | 511d7ab | 2009-03-11 16:27:10 +0000 | [diff] [blame] | 559 | case tok::kw_static_assert: |
Peter Collingbourne | c6eb44b | 2011-04-15 00:35:57 +0000 | [diff] [blame^] | 560 | case tok::kw__Static_assert: |
Chris Lattner | bae3511 | 2007-08-25 18:15:16 +0000 | [diff] [blame] | 561 | // A function definition cannot start with a these keywords. |
Chris Lattner | 97144fc | 2009-04-02 04:16:50 +0000 | [diff] [blame] | 562 | { |
| 563 | SourceLocation DeclEnd; |
Fariborz Jahanian | c5be7b0 | 2010-09-28 20:42:35 +0000 | [diff] [blame] | 564 | StmtVector Stmts(Actions); |
John McCall | 7f040a9 | 2010-12-24 02:08:15 +0000 | [diff] [blame] | 565 | return ParseDeclaration(Stmts, Declarator::FileContext, DeclEnd, attrs); |
Chris Lattner | 97144fc | 2009-04-02 04:16:50 +0000 | [diff] [blame] | 566 | } |
Sebastian Redl | d078e64 | 2010-08-27 23:12:46 +0000 | [diff] [blame] | 567 | |
Douglas Gregor | 7306ebf | 2010-12-01 20:32:20 +0000 | [diff] [blame] | 568 | case tok::kw_static: |
| 569 | // Parse (then ignore) 'static' prior to a template instantiation. This is |
| 570 | // a GCC extension that we intentionally do not support. |
| 571 | if (getLang().CPlusPlus && NextToken().is(tok::kw_template)) { |
| 572 | Diag(ConsumeToken(), diag::warn_static_inline_explicit_inst_ignored) |
| 573 | << 0; |
Sebastian Redl | d078e64 | 2010-08-27 23:12:46 +0000 | [diff] [blame] | 574 | SourceLocation DeclEnd; |
Fariborz Jahanian | c5be7b0 | 2010-09-28 20:42:35 +0000 | [diff] [blame] | 575 | StmtVector Stmts(Actions); |
John McCall | 7f040a9 | 2010-12-24 02:08:15 +0000 | [diff] [blame] | 576 | return ParseDeclaration(Stmts, Declarator::FileContext, DeclEnd, attrs); |
Douglas Gregor | 7306ebf | 2010-12-01 20:32:20 +0000 | [diff] [blame] | 577 | } |
| 578 | goto dont_know; |
| 579 | |
| 580 | case tok::kw_inline: |
| 581 | if (getLang().CPlusPlus) { |
| 582 | tok::TokenKind NextKind = NextToken().getKind(); |
| 583 | |
| 584 | // Inline namespaces. Allowed as an extension even in C++03. |
| 585 | if (NextKind == tok::kw_namespace) { |
| 586 | SourceLocation DeclEnd; |
| 587 | StmtVector Stmts(Actions); |
John McCall | 7f040a9 | 2010-12-24 02:08:15 +0000 | [diff] [blame] | 588 | return ParseDeclaration(Stmts, Declarator::FileContext, DeclEnd, attrs); |
Douglas Gregor | 7306ebf | 2010-12-01 20:32:20 +0000 | [diff] [blame] | 589 | } |
| 590 | |
| 591 | // Parse (then ignore) 'inline' prior to a template instantiation. This is |
| 592 | // a GCC extension that we intentionally do not support. |
| 593 | if (NextKind == tok::kw_template) { |
| 594 | Diag(ConsumeToken(), diag::warn_static_inline_explicit_inst_ignored) |
| 595 | << 1; |
| 596 | SourceLocation DeclEnd; |
| 597 | StmtVector Stmts(Actions); |
John McCall | 7f040a9 | 2010-12-24 02:08:15 +0000 | [diff] [blame] | 598 | return ParseDeclaration(Stmts, Declarator::FileContext, DeclEnd, attrs); |
Douglas Gregor | 7306ebf | 2010-12-01 20:32:20 +0000 | [diff] [blame] | 599 | } |
Sebastian Redl | d078e64 | 2010-08-27 23:12:46 +0000 | [diff] [blame] | 600 | } |
| 601 | goto dont_know; |
| 602 | |
Douglas Gregor | 45f9655 | 2009-09-04 06:33:52 +0000 | [diff] [blame] | 603 | case tok::kw_extern: |
| 604 | if (getLang().CPlusPlus && NextToken().is(tok::kw_template)) { |
| 605 | // Extern templates |
| 606 | SourceLocation ExternLoc = ConsumeToken(); |
| 607 | SourceLocation TemplateLoc = ConsumeToken(); |
| 608 | SourceLocation DeclEnd; |
| 609 | return Actions.ConvertDeclToDeclGroup( |
| 610 | ParseExplicitInstantiation(ExternLoc, TemplateLoc, DeclEnd)); |
| 611 | } |
Douglas Gregor | 45f9655 | 2009-09-04 06:33:52 +0000 | [diff] [blame] | 612 | // FIXME: Detect C++ linkage specifications here? |
Sebastian Redl | d078e64 | 2010-08-27 23:12:46 +0000 | [diff] [blame] | 613 | goto dont_know; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 614 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 615 | default: |
Sebastian Redl | d078e64 | 2010-08-27 23:12:46 +0000 | [diff] [blame] | 616 | dont_know: |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 617 | // We can't tell whether this is a function-definition or declaration yet. |
John McCall | 7f040a9 | 2010-12-24 02:08:15 +0000 | [diff] [blame] | 618 | if (DS) { |
| 619 | DS->takeAttributesFrom(attrs); |
| 620 | return ParseDeclarationOrFunctionDefinition(*DS); |
| 621 | } else { |
| 622 | return ParseDeclarationOrFunctionDefinition(attrs); |
| 623 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 624 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 625 | |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 626 | // This routine returns a DeclGroup, if the thing we parsed only contains a |
| 627 | // single decl, convert it now. |
| 628 | return Actions.ConvertDeclToDeclGroup(SingleDecl); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 629 | } |
| 630 | |
Douglas Gregor | 1426e53 | 2009-05-12 21:31:51 +0000 | [diff] [blame] | 631 | /// \brief Determine whether the current token, if it occurs after a |
| 632 | /// declarator, continues a declaration or declaration list. |
Chris Lattner | c82daef | 2010-07-11 22:24:20 +0000 | [diff] [blame] | 633 | bool Parser::isDeclarationAfterDeclarator() const { |
Douglas Gregor | 1426e53 | 2009-05-12 21:31:51 +0000 | [diff] [blame] | 634 | return Tok.is(tok::equal) || // int X()= -> not a function def |
| 635 | Tok.is(tok::comma) || // int X(), -> not a function def |
| 636 | Tok.is(tok::semi) || // int X(); -> not a function def |
| 637 | Tok.is(tok::kw_asm) || // int X() __asm__ -> not a function def |
| 638 | Tok.is(tok::kw___attribute) || // int X() __attr__ -> not a function def |
| 639 | (getLang().CPlusPlus && |
| 640 | Tok.is(tok::l_paren)); // int X(0) -> not a function def [C++] |
| 641 | } |
| 642 | |
| 643 | /// \brief Determine whether the current token, if it occurs after a |
| 644 | /// declarator, indicates the start of a function definition. |
Chris Lattner | 004659a | 2010-07-11 22:42:07 +0000 | [diff] [blame] | 645 | bool Parser::isStartOfFunctionDefinition(const ParsingDeclarator &Declarator) { |
Abramo Bagnara | 075f8f1 | 2010-12-10 16:29:40 +0000 | [diff] [blame] | 646 | assert(Declarator.isFunctionDeclarator() && "Isn't a function declarator"); |
Chris Lattner | 5d1c619 | 2009-12-06 18:34:27 +0000 | [diff] [blame] | 647 | if (Tok.is(tok::l_brace)) // int X() {} |
| 648 | return true; |
| 649 | |
Chris Lattner | 004659a | 2010-07-11 22:42:07 +0000 | [diff] [blame] | 650 | // Handle K&R C argument lists: int X(f) int f; {} |
| 651 | if (!getLang().CPlusPlus && |
Abramo Bagnara | 075f8f1 | 2010-12-10 16:29:40 +0000 | [diff] [blame] | 652 | Declarator.getFunctionTypeInfo().isKNRPrototype()) |
Chris Lattner | 004659a | 2010-07-11 22:42:07 +0000 | [diff] [blame] | 653 | return isDeclarationSpecifier(); |
| 654 | |
Chris Lattner | 5d1c619 | 2009-12-06 18:34:27 +0000 | [diff] [blame] | 655 | return Tok.is(tok::colon) || // X() : Base() {} (used for ctors) |
| 656 | Tok.is(tok::kw_try); // X() try { ... } |
Douglas Gregor | 1426e53 | 2009-05-12 21:31:51 +0000 | [diff] [blame] | 657 | } |
| 658 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 659 | /// ParseDeclarationOrFunctionDefinition - Parse either a function-definition or |
| 660 | /// a declaration. We can't tell which we have until we read up to the |
Douglas Gregor | c4b4e7b | 2008-12-24 02:52:09 +0000 | [diff] [blame] | 661 | /// compound-statement in function-definition. TemplateParams, if |
| 662 | /// non-NULL, provides the template parameters when we're parsing a |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 663 | /// C++ template-declaration. |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 664 | /// |
| 665 | /// function-definition: [C99 6.9.1] |
Chris Lattner | a798ebc | 2008-04-05 05:52:15 +0000 | [diff] [blame] | 666 | /// decl-specs declarator declaration-list[opt] compound-statement |
| 667 | /// [C90] function-definition: [C99 6.7.1] - implicit int result |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 668 | /// [C90] decl-specs[opt] declarator declaration-list[opt] compound-statement |
Chris Lattner | a798ebc | 2008-04-05 05:52:15 +0000 | [diff] [blame] | 669 | /// |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 670 | /// declaration: [C99 6.7] |
Chris Lattner | 697e15f | 2007-08-22 06:06:56 +0000 | [diff] [blame] | 671 | /// declaration-specifiers init-declarator-list[opt] ';' |
| 672 | /// [!C99] init-declarator-list ';' [TODO: warn in c99 mode] |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 673 | /// [OMP] threadprivate-directive [TODO] |
| 674 | /// |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 675 | Parser::DeclGroupPtrTy |
Fariborz Jahanian | 3acd9aa | 2009-12-09 21:39:38 +0000 | [diff] [blame] | 676 | Parser::ParseDeclarationOrFunctionDefinition(ParsingDeclSpec &DS, |
Sean Hunt | bbd37c6 | 2009-11-21 08:43:09 +0000 | [diff] [blame] | 677 | AccessSpecifier AS) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 678 | // Parse the common declaration-specifiers piece. |
Douglas Gregor | 0efc2c1 | 2010-01-13 17:31:36 +0000 | [diff] [blame] | 679 | ParseDeclarationSpecifiers(DS, ParsedTemplateInfo(), AS, DSC_top_level); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 680 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 681 | // C99 6.7.2.3p6: Handle "struct-or-union identifier;", "enum { X };" |
| 682 | // declaration-specifiers init-declarator-list[opt] ';' |
Chris Lattner | 0007322 | 2007-10-09 17:23:58 +0000 | [diff] [blame] | 683 | if (Tok.is(tok::semi)) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 684 | ConsumeToken(); |
John McCall | d226f65 | 2010-08-21 09:40:31 +0000 | [diff] [blame] | 685 | Decl *TheDecl = Actions.ParsedFreeStandingDeclSpec(getCurScope(), AS, DS); |
John McCall | 54abf7d | 2009-11-04 02:18:39 +0000 | [diff] [blame] | 686 | DS.complete(TheDecl); |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 687 | return Actions.ConvertDeclToDeclGroup(TheDecl); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 688 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 689 | |
Daniel Dunbar | 246e70f | 2008-09-26 04:48:09 +0000 | [diff] [blame] | 690 | // ObjC2 allows prefix attributes on class interfaces and protocols. |
| 691 | // FIXME: This still needs better diagnostics. We should only accept |
| 692 | // attributes here, no types, etc. |
Chris Lattner | 0007322 | 2007-10-09 17:23:58 +0000 | [diff] [blame] | 693 | if (getLang().ObjC2 && Tok.is(tok::at)) { |
Steve Naroff | dac269b | 2007-08-20 21:31:48 +0000 | [diff] [blame] | 694 | SourceLocation AtLoc = ConsumeToken(); // the "@" |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 695 | if (!Tok.isObjCAtKeyword(tok::objc_interface) && |
Daniel Dunbar | 246e70f | 2008-09-26 04:48:09 +0000 | [diff] [blame] | 696 | !Tok.isObjCAtKeyword(tok::objc_protocol)) { |
| 697 | Diag(Tok, diag::err_objc_unexpected_attr); |
Chris Lattner | cb53b36 | 2007-12-27 19:57:00 +0000 | [diff] [blame] | 698 | SkipUntil(tok::semi); // FIXME: better skip? |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 699 | return DeclGroupPtrTy(); |
Chris Lattner | cb53b36 | 2007-12-27 19:57:00 +0000 | [diff] [blame] | 700 | } |
John McCall | d8ac057 | 2009-11-03 19:26:08 +0000 | [diff] [blame] | 701 | |
John McCall | 54abf7d | 2009-11-04 02:18:39 +0000 | [diff] [blame] | 702 | DS.abort(); |
| 703 | |
Fariborz Jahanian | 0de2ae2 | 2008-01-02 19:17:38 +0000 | [diff] [blame] | 704 | const char *PrevSpec = 0; |
John McCall | fec5401 | 2009-08-03 20:12:06 +0000 | [diff] [blame] | 705 | unsigned DiagID; |
| 706 | if (DS.SetTypeSpecType(DeclSpec::TST_unspecified, AtLoc, PrevSpec, DiagID)) |
| 707 | Diag(AtLoc, DiagID) << PrevSpec; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 708 | |
John McCall | d226f65 | 2010-08-21 09:40:31 +0000 | [diff] [blame] | 709 | Decl *TheDecl = 0; |
Daniel Dunbar | 246e70f | 2008-09-26 04:48:09 +0000 | [diff] [blame] | 710 | if (Tok.isObjCAtKeyword(tok::objc_protocol)) |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 711 | TheDecl = ParseObjCAtProtocolDeclaration(AtLoc, DS.getAttributes()); |
| 712 | else |
| 713 | TheDecl = ParseObjCAtInterfaceDeclaration(AtLoc, DS.getAttributes()); |
| 714 | return Actions.ConvertDeclToDeclGroup(TheDecl); |
Steve Naroff | dac269b | 2007-08-20 21:31:48 +0000 | [diff] [blame] | 715 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 716 | |
Chris Lattner | c6fdc34 | 2008-01-12 07:05:38 +0000 | [diff] [blame] | 717 | // If the declspec consisted only of 'extern' and we have a string |
| 718 | // literal following it, this must be a C++ linkage specifier like |
| 719 | // 'extern "C"'. |
Chris Lattner | 3c6f6a7 | 2008-01-12 07:08:43 +0000 | [diff] [blame] | 720 | if (Tok.is(tok::string_literal) && getLang().CPlusPlus && |
Chris Lattner | c6fdc34 | 2008-01-12 07:05:38 +0000 | [diff] [blame] | 721 | DS.getStorageClassSpec() == DeclSpec::SCS_extern && |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 722 | DS.getParsedSpecifiers() == DeclSpec::PQ_StorageClassSpecifier) { |
John McCall | d226f65 | 2010-08-21 09:40:31 +0000 | [diff] [blame] | 723 | Decl *TheDecl = ParseLinkage(DS, Declarator::FileContext); |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 724 | return Actions.ConvertDeclToDeclGroup(TheDecl); |
| 725 | } |
Chris Lattner | c6fdc34 | 2008-01-12 07:05:38 +0000 | [diff] [blame] | 726 | |
John McCall | d8ac057 | 2009-11-03 19:26:08 +0000 | [diff] [blame] | 727 | return ParseDeclGroup(DS, Declarator::FileContext, true); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 728 | } |
| 729 | |
Fariborz Jahanian | 3acd9aa | 2009-12-09 21:39:38 +0000 | [diff] [blame] | 730 | Parser::DeclGroupPtrTy |
John McCall | 7f040a9 | 2010-12-24 02:08:15 +0000 | [diff] [blame] | 731 | Parser::ParseDeclarationOrFunctionDefinition(ParsedAttributes &attrs, |
Fariborz Jahanian | 3acd9aa | 2009-12-09 21:39:38 +0000 | [diff] [blame] | 732 | AccessSpecifier AS) { |
| 733 | ParsingDeclSpec DS(*this); |
John McCall | 7f040a9 | 2010-12-24 02:08:15 +0000 | [diff] [blame] | 734 | DS.takeAttributesFrom(attrs); |
| 735 | return ParseDeclarationOrFunctionDefinition(DS, AS); |
Fariborz Jahanian | 3acd9aa | 2009-12-09 21:39:38 +0000 | [diff] [blame] | 736 | } |
| 737 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 738 | /// ParseFunctionDefinition - We parsed and verified that the specified |
| 739 | /// Declarator is well formed. If this is a K&R-style function, read the |
| 740 | /// parameters declaration-list, then start the compound-statement. |
| 741 | /// |
Chris Lattner | a798ebc | 2008-04-05 05:52:15 +0000 | [diff] [blame] | 742 | /// function-definition: [C99 6.9.1] |
| 743 | /// decl-specs declarator declaration-list[opt] compound-statement |
| 744 | /// [C90] function-definition: [C99 6.7.1] - implicit int result |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 745 | /// [C90] decl-specs[opt] declarator declaration-list[opt] compound-statement |
Douglas Gregor | 7ad8390 | 2008-11-05 04:29:56 +0000 | [diff] [blame] | 746 | /// [C++] function-definition: [C++ 8.4] |
Chris Lattner | 23c4b18 | 2009-03-29 17:18:04 +0000 | [diff] [blame] | 747 | /// decl-specifier-seq[opt] declarator ctor-initializer[opt] |
| 748 | /// function-body |
Douglas Gregor | 7ad8390 | 2008-11-05 04:29:56 +0000 | [diff] [blame] | 749 | /// [C++] function-definition: [C++ 8.4] |
Sebastian Redl | d3a413d | 2009-04-26 20:35:05 +0000 | [diff] [blame] | 750 | /// decl-specifier-seq[opt] declarator function-try-block |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 751 | /// |
John McCall | d226f65 | 2010-08-21 09:40:31 +0000 | [diff] [blame] | 752 | Decl *Parser::ParseFunctionDefinition(ParsingDeclarator &D, |
Abramo Bagnara | 075f8f1 | 2010-12-10 16:29:40 +0000 | [diff] [blame] | 753 | const ParsedTemplateInfo &TemplateInfo) { |
| 754 | const DeclaratorChunk::FunctionTypeInfo &FTI = D.getFunctionTypeInfo(); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 755 | |
Chris Lattner | a798ebc | 2008-04-05 05:52:15 +0000 | [diff] [blame] | 756 | // If this is C90 and the declspecs were completely missing, fudge in an |
| 757 | // implicit int. We do this here because this is the only place where |
| 758 | // declaration-specifiers are completely optional in the grammar. |
Chris Lattner | 2a327d1 | 2009-02-27 18:35:46 +0000 | [diff] [blame] | 759 | if (getLang().ImplicitInt && D.getDeclSpec().isEmpty()) { |
Chris Lattner | a798ebc | 2008-04-05 05:52:15 +0000 | [diff] [blame] | 760 | const char *PrevSpec; |
John McCall | fec5401 | 2009-08-03 20:12:06 +0000 | [diff] [blame] | 761 | unsigned DiagID; |
Chris Lattner | 31c2868 | 2008-10-20 02:01:34 +0000 | [diff] [blame] | 762 | D.getMutableDeclSpec().SetTypeSpecType(DeclSpec::TST_int, |
| 763 | D.getIdentifierLoc(), |
John McCall | fec5401 | 2009-08-03 20:12:06 +0000 | [diff] [blame] | 764 | PrevSpec, DiagID); |
Sebastian Redl | ab197ba | 2009-02-09 18:23:29 +0000 | [diff] [blame] | 765 | D.SetRangeBegin(D.getDeclSpec().getSourceRange().getBegin()); |
Chris Lattner | a798ebc | 2008-04-05 05:52:15 +0000 | [diff] [blame] | 766 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 767 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 768 | // If this declaration was formed with a K&R-style identifier list for the |
| 769 | // arguments, parse declarations for all of the args next. |
| 770 | // int foo(a,b) int a; float b; {} |
Chris Lattner | 004659a | 2010-07-11 22:42:07 +0000 | [diff] [blame] | 771 | if (FTI.isKNRPrototype()) |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 772 | ParseKNRParamDeclarations(D); |
| 773 | |
Douglas Gregor | 7ad8390 | 2008-11-05 04:29:56 +0000 | [diff] [blame] | 774 | // We should have either an opening brace or, in a C++ constructor, |
| 775 | // we may have a colon. |
Douglas Gregor | 758afbc | 2011-02-04 11:57:16 +0000 | [diff] [blame] | 776 | if (Tok.isNot(tok::l_brace) && |
| 777 | (!getLang().CPlusPlus || |
| 778 | (Tok.isNot(tok::colon) && Tok.isNot(tok::kw_try)))) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 779 | Diag(Tok, diag::err_expected_fn_body); |
| 780 | |
| 781 | // Skip over garbage, until we get to '{'. Don't eat the '{'. |
| 782 | SkipUntil(tok::l_brace, true, true); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 783 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 784 | // If we didn't find the '{', bail out. |
Chris Lattner | 0007322 | 2007-10-09 17:23:58 +0000 | [diff] [blame] | 785 | if (Tok.isNot(tok::l_brace)) |
John McCall | d226f65 | 2010-08-21 09:40:31 +0000 | [diff] [blame] | 786 | return 0; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 787 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 788 | |
Chris Lattner | b652cea | 2007-10-09 17:14:05 +0000 | [diff] [blame] | 789 | // Enter a scope for the function body. |
Douglas Gregor | 8935b8b | 2008-12-10 06:34:36 +0000 | [diff] [blame] | 790 | ParseScope BodyScope(this, Scope::FnScope|Scope::DeclScope); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 791 | |
Chris Lattner | b652cea | 2007-10-09 17:14:05 +0000 | [diff] [blame] | 792 | // Tell the actions module that we have entered a function definition with the |
| 793 | // specified Declarator for the function. |
John McCall | d226f65 | 2010-08-21 09:40:31 +0000 | [diff] [blame] | 794 | Decl *Res = TemplateInfo.TemplateParams? |
Douglas Gregor | 23c94db | 2010-07-02 17:43:08 +0000 | [diff] [blame] | 795 | Actions.ActOnStartOfFunctionTemplateDef(getCurScope(), |
John McCall | f312b1e | 2010-08-26 23:41:50 +0000 | [diff] [blame] | 796 | MultiTemplateParamsArg(Actions, |
Douglas Gregor | 52591bf | 2009-06-24 00:54:41 +0000 | [diff] [blame] | 797 | TemplateInfo.TemplateParams->data(), |
| 798 | TemplateInfo.TemplateParams->size()), |
| 799 | D) |
Douglas Gregor | 23c94db | 2010-07-02 17:43:08 +0000 | [diff] [blame] | 800 | : Actions.ActOnStartOfFunctionDef(getCurScope(), D); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 801 | |
John McCall | 54abf7d | 2009-11-04 02:18:39 +0000 | [diff] [blame] | 802 | // Break out of the ParsingDeclarator context before we parse the body. |
| 803 | D.complete(Res); |
| 804 | |
| 805 | // Break out of the ParsingDeclSpec context, too. This const_cast is |
| 806 | // safe because we're always the sole owner. |
| 807 | D.getMutableDeclSpec().abort(); |
| 808 | |
Sebastian Redl | d3a413d | 2009-04-26 20:35:05 +0000 | [diff] [blame] | 809 | if (Tok.is(tok::kw_try)) |
Douglas Gregor | c9977d0 | 2011-03-16 17:05:57 +0000 | [diff] [blame] | 810 | return ParseFunctionTryBlock(Res, BodyScope); |
Sebastian Redl | d3a413d | 2009-04-26 20:35:05 +0000 | [diff] [blame] | 811 | |
Douglas Gregor | 7ad8390 | 2008-11-05 04:29:56 +0000 | [diff] [blame] | 812 | // If we have a colon, then we're probably parsing a C++ |
| 813 | // ctor-initializer. |
John McCall | d6ca8da | 2010-04-10 07:37:23 +0000 | [diff] [blame] | 814 | if (Tok.is(tok::colon)) { |
Douglas Gregor | 7ad8390 | 2008-11-05 04:29:56 +0000 | [diff] [blame] | 815 | ParseConstructorInitializer(Res); |
John McCall | d6ca8da | 2010-04-10 07:37:23 +0000 | [diff] [blame] | 816 | |
| 817 | // Recover from error. |
| 818 | if (!Tok.is(tok::l_brace)) { |
Douglas Gregor | c9977d0 | 2011-03-16 17:05:57 +0000 | [diff] [blame] | 819 | BodyScope.Exit(); |
John McCall | 9ae2f07 | 2010-08-23 23:25:46 +0000 | [diff] [blame] | 820 | Actions.ActOnFinishFunctionBody(Res, 0); |
John McCall | d6ca8da | 2010-04-10 07:37:23 +0000 | [diff] [blame] | 821 | return Res; |
| 822 | } |
| 823 | } else |
Fariborz Jahanian | 393612e | 2009-07-21 22:36:06 +0000 | [diff] [blame] | 824 | Actions.ActOnDefaultCtorInitializers(Res); |
Douglas Gregor | 7ad8390 | 2008-11-05 04:29:56 +0000 | [diff] [blame] | 825 | |
Douglas Gregor | c9977d0 | 2011-03-16 17:05:57 +0000 | [diff] [blame] | 826 | return ParseFunctionStatementBody(Res, BodyScope); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 827 | } |
| 828 | |
| 829 | /// ParseKNRParamDeclarations - Parse 'declaration-list[opt]' which provides |
| 830 | /// types for a function with a K&R-style identifier list for arguments. |
| 831 | void Parser::ParseKNRParamDeclarations(Declarator &D) { |
| 832 | // We know that the top-level of this declarator is a function. |
Abramo Bagnara | 075f8f1 | 2010-12-10 16:29:40 +0000 | [diff] [blame] | 833 | DeclaratorChunk::FunctionTypeInfo &FTI = D.getFunctionTypeInfo(); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 834 | |
Chris Lattner | 0442108 | 2008-04-08 04:40:51 +0000 | [diff] [blame] | 835 | // Enter function-declaration scope, limiting any declarators to the |
| 836 | // function prototype scope, including parameter declarators. |
Douglas Gregor | 3218c4b | 2009-01-09 22:42:13 +0000 | [diff] [blame] | 837 | ParseScope PrototypeScope(this, Scope::FunctionPrototypeScope|Scope::DeclScope); |
Chris Lattner | 0442108 | 2008-04-08 04:40:51 +0000 | [diff] [blame] | 838 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 839 | // Read all the argument declarations. |
| 840 | while (isDeclarationSpecifier()) { |
| 841 | SourceLocation DSStart = Tok.getLocation(); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 842 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 843 | // Parse the common declaration-specifiers piece. |
John McCall | 0b7e678 | 2011-03-24 11:26:52 +0000 | [diff] [blame] | 844 | DeclSpec DS(AttrFactory); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 845 | ParseDeclarationSpecifiers(DS); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 846 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 847 | // C99 6.9.1p6: 'each declaration in the declaration list shall have at |
| 848 | // least one declarator'. |
| 849 | // NOTE: GCC just makes this an ext-warn. It's not clear what it does with |
| 850 | // the declarations though. It's trivial to ignore them, really hard to do |
| 851 | // anything else with them. |
Chris Lattner | 0007322 | 2007-10-09 17:23:58 +0000 | [diff] [blame] | 852 | if (Tok.is(tok::semi)) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 853 | Diag(DSStart, diag::err_declaration_does_not_declare_param); |
| 854 | ConsumeToken(); |
| 855 | continue; |
| 856 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 857 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 858 | // C99 6.9.1p6: Declarations shall contain no storage-class specifiers other |
| 859 | // than register. |
| 860 | if (DS.getStorageClassSpec() != DeclSpec::SCS_unspecified && |
| 861 | DS.getStorageClassSpec() != DeclSpec::SCS_register) { |
| 862 | Diag(DS.getStorageClassSpecLoc(), |
| 863 | diag::err_invalid_storage_class_in_func_decl); |
| 864 | DS.ClearStorageClassSpecs(); |
| 865 | } |
| 866 | if (DS.isThreadSpecified()) { |
| 867 | Diag(DS.getThreadSpecLoc(), |
| 868 | diag::err_invalid_storage_class_in_func_decl); |
| 869 | DS.ClearStorageClassSpecs(); |
| 870 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 871 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 872 | // Parse the first declarator attached to this declspec. |
| 873 | Declarator ParmDeclarator(DS, Declarator::KNRTypeListContext); |
| 874 | ParseDeclarator(ParmDeclarator); |
| 875 | |
| 876 | // Handle the full declarator list. |
| 877 | while (1) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 878 | // If attributes are present, parse them. |
John McCall | 7f040a9 | 2010-12-24 02:08:15 +0000 | [diff] [blame] | 879 | MaybeParseGNUAttributes(ParmDeclarator); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 880 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 881 | // Ask the actions module to compute the type for this declarator. |
John McCall | d226f65 | 2010-08-21 09:40:31 +0000 | [diff] [blame] | 882 | Decl *Param = |
Douglas Gregor | 23c94db | 2010-07-02 17:43:08 +0000 | [diff] [blame] | 883 | Actions.ActOnParamDeclarator(getCurScope(), ParmDeclarator); |
Steve Naroff | 2bd42fa | 2007-09-10 20:51:04 +0000 | [diff] [blame] | 884 | |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 885 | if (Param && |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 886 | // A missing identifier has already been diagnosed. |
| 887 | ParmDeclarator.getIdentifier()) { |
| 888 | |
| 889 | // Scan the argument list looking for the correct param to apply this |
| 890 | // type. |
| 891 | for (unsigned i = 0; ; ++i) { |
| 892 | // C99 6.9.1p6: those declarators shall declare only identifiers from |
| 893 | // the identifier list. |
| 894 | if (i == FTI.NumArgs) { |
Chris Lattner | 1ab3b96 | 2008-11-18 07:48:38 +0000 | [diff] [blame] | 895 | Diag(ParmDeclarator.getIdentifierLoc(), diag::err_no_matching_param) |
Chris Lattner | 6898e33 | 2008-11-19 07:51:13 +0000 | [diff] [blame] | 896 | << ParmDeclarator.getIdentifier(); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 897 | break; |
| 898 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 899 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 900 | if (FTI.ArgInfo[i].Ident == ParmDeclarator.getIdentifier()) { |
| 901 | // Reject redefinitions of parameters. |
Chris Lattner | 0442108 | 2008-04-08 04:40:51 +0000 | [diff] [blame] | 902 | if (FTI.ArgInfo[i].Param) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 903 | Diag(ParmDeclarator.getIdentifierLoc(), |
Chris Lattner | 1ab3b96 | 2008-11-18 07:48:38 +0000 | [diff] [blame] | 904 | diag::err_param_redefinition) |
Chris Lattner | 6898e33 | 2008-11-19 07:51:13 +0000 | [diff] [blame] | 905 | << ParmDeclarator.getIdentifier(); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 906 | } else { |
Chris Lattner | 0442108 | 2008-04-08 04:40:51 +0000 | [diff] [blame] | 907 | FTI.ArgInfo[i].Param = Param; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 908 | } |
| 909 | break; |
| 910 | } |
| 911 | } |
| 912 | } |
| 913 | |
| 914 | // If we don't have a comma, it is either the end of the list (a ';') or |
| 915 | // an error, bail out. |
Chris Lattner | 0007322 | 2007-10-09 17:23:58 +0000 | [diff] [blame] | 916 | if (Tok.isNot(tok::comma)) |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 917 | break; |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 918 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 919 | // Consume the comma. |
| 920 | ConsumeToken(); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 921 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 922 | // Parse the next declarator. |
| 923 | ParmDeclarator.clear(); |
| 924 | ParseDeclarator(ParmDeclarator); |
| 925 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 926 | |
Chris Lattner | 0007322 | 2007-10-09 17:23:58 +0000 | [diff] [blame] | 927 | if (Tok.is(tok::semi)) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 928 | ConsumeToken(); |
| 929 | } else { |
| 930 | Diag(Tok, diag::err_parse_error); |
| 931 | // Skip to end of block or statement |
| 932 | SkipUntil(tok::semi, true); |
Chris Lattner | 0007322 | 2007-10-09 17:23:58 +0000 | [diff] [blame] | 933 | if (Tok.is(tok::semi)) |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 934 | ConsumeToken(); |
| 935 | } |
| 936 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 937 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 938 | // The actions module must verify that all arguments were declared. |
Douglas Gregor | 23c94db | 2010-07-02 17:43:08 +0000 | [diff] [blame] | 939 | Actions.ActOnFinishKNRParamDeclarations(getCurScope(), D, Tok.getLocation()); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 940 | } |
| 941 | |
| 942 | |
| 943 | /// ParseAsmStringLiteral - This is just a normal string-literal, but is not |
| 944 | /// allowed to be a wide string, and is not subject to character translation. |
| 945 | /// |
| 946 | /// [GNU] asm-string-literal: |
| 947 | /// string-literal |
| 948 | /// |
John McCall | 60d7b3a | 2010-08-24 06:29:42 +0000 | [diff] [blame] | 949 | Parser::ExprResult Parser::ParseAsmStringLiteral() { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 950 | if (!isTokenStringLiteral()) { |
| 951 | Diag(Tok, diag::err_expected_string_literal); |
Sebastian Redl | 61364dd | 2008-12-11 19:30:53 +0000 | [diff] [blame] | 952 | return ExprError(); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 953 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 954 | |
John McCall | 60d7b3a | 2010-08-24 06:29:42 +0000 | [diff] [blame] | 955 | ExprResult Res(ParseStringLiteralExpression()); |
Sebastian Redl | effa8d1 | 2008-12-10 00:02:53 +0000 | [diff] [blame] | 956 | if (Res.isInvalid()) return move(Res); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 957 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 958 | // TODO: Diagnose: wide string literal in 'asm' |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 959 | |
Sebastian Redl | effa8d1 | 2008-12-10 00:02:53 +0000 | [diff] [blame] | 960 | return move(Res); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 961 | } |
| 962 | |
| 963 | /// ParseSimpleAsm |
| 964 | /// |
| 965 | /// [GNU] simple-asm-expr: |
| 966 | /// 'asm' '(' asm-string-literal ')' |
| 967 | /// |
John McCall | 60d7b3a | 2010-08-24 06:29:42 +0000 | [diff] [blame] | 968 | Parser::ExprResult Parser::ParseSimpleAsm(SourceLocation *EndLoc) { |
Chris Lattner | 0007322 | 2007-10-09 17:23:58 +0000 | [diff] [blame] | 969 | assert(Tok.is(tok::kw_asm) && "Not an asm!"); |
Anders Carlsson | dfab6cb | 2008-02-08 00:33:21 +0000 | [diff] [blame] | 970 | SourceLocation Loc = ConsumeToken(); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 971 | |
John McCall | 7a6ae74 | 2010-01-25 22:27:48 +0000 | [diff] [blame] | 972 | if (Tok.is(tok::kw_volatile)) { |
John McCall | 841d5e6 | 2010-01-25 23:12:50 +0000 | [diff] [blame] | 973 | // Remove from the end of 'asm' to the end of 'volatile'. |
| 974 | SourceRange RemovalRange(PP.getLocForEndOfToken(Loc), |
| 975 | PP.getLocForEndOfToken(Tok.getLocation())); |
| 976 | |
| 977 | Diag(Tok, diag::warn_file_asm_volatile) |
Douglas Gregor | 849b243 | 2010-03-31 17:46:05 +0000 | [diff] [blame] | 978 | << FixItHint::CreateRemoval(RemovalRange); |
John McCall | 7a6ae74 | 2010-01-25 22:27:48 +0000 | [diff] [blame] | 979 | ConsumeToken(); |
| 980 | } |
| 981 | |
Chris Lattner | 0007322 | 2007-10-09 17:23:58 +0000 | [diff] [blame] | 982 | if (Tok.isNot(tok::l_paren)) { |
Chris Lattner | 1ab3b96 | 2008-11-18 07:48:38 +0000 | [diff] [blame] | 983 | Diag(Tok, diag::err_expected_lparen_after) << "asm"; |
Sebastian Redl | 61364dd | 2008-12-11 19:30:53 +0000 | [diff] [blame] | 984 | return ExprError(); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 985 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 986 | |
Sebastian Redl | ab197ba | 2009-02-09 18:23:29 +0000 | [diff] [blame] | 987 | Loc = ConsumeParen(); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 988 | |
John McCall | 60d7b3a | 2010-08-24 06:29:42 +0000 | [diff] [blame] | 989 | ExprResult Result(ParseAsmStringLiteral()); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 990 | |
Sebastian Redl | ab197ba | 2009-02-09 18:23:29 +0000 | [diff] [blame] | 991 | if (Result.isInvalid()) { |
| 992 | SkipUntil(tok::r_paren, true, true); |
| 993 | if (EndLoc) |
| 994 | *EndLoc = Tok.getLocation(); |
| 995 | ConsumeAnyToken(); |
| 996 | } else { |
| 997 | Loc = MatchRHSPunctuation(tok::r_paren, Loc); |
| 998 | if (EndLoc) |
| 999 | *EndLoc = Loc; |
| 1000 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 1001 | |
Sebastian Redl | effa8d1 | 2008-12-10 00:02:53 +0000 | [diff] [blame] | 1002 | return move(Result); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1003 | } |
| 1004 | |
Argyrios Kyrtzidis | eb83ecd | 2008-11-08 16:45:02 +0000 | [diff] [blame] | 1005 | /// TryAnnotateTypeOrScopeToken - If the current token position is on a |
| 1006 | /// typename (possibly qualified in C++) or a C++ scope specifier not followed |
| 1007 | /// by a typename, TryAnnotateTypeOrScopeToken will replace one or more tokens |
| 1008 | /// with a single annotation token representing the typename or C++ scope |
| 1009 | /// respectively. |
| 1010 | /// This simplifies handling of C++ scope specifiers and allows efficient |
| 1011 | /// backtracking without the need to re-parse and resolve nested-names and |
| 1012 | /// typenames. |
Argyrios Kyrtzidis | 44802cc | 2008-11-26 21:51:07 +0000 | [diff] [blame] | 1013 | /// It will mainly be called when we expect to treat identifiers as typenames |
| 1014 | /// (if they are typenames). For example, in C we do not expect identifiers |
| 1015 | /// inside expressions to be treated as typenames so it will not be called |
| 1016 | /// for expressions in C. |
| 1017 | /// The benefit for C/ObjC is that a typename will be annotated and |
Steve Naroff | b43a50f | 2009-01-28 19:39:02 +0000 | [diff] [blame] | 1018 | /// Actions.getTypeName will not be needed to be called again (e.g. getTypeName |
Argyrios Kyrtzidis | 44802cc | 2008-11-26 21:51:07 +0000 | [diff] [blame] | 1019 | /// will not be called twice, once to check whether we have a declaration |
| 1020 | /// specifier, and another one to get the actual type inside |
| 1021 | /// ParseDeclarationSpecifiers). |
Chris Lattner | a7bc7c8 | 2009-01-04 23:23:14 +0000 | [diff] [blame] | 1022 | /// |
John McCall | 9ba6166 | 2010-02-26 08:45:28 +0000 | [diff] [blame] | 1023 | /// This returns true if an error occurred. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1024 | /// |
Chris Lattner | 55a7cef | 2009-01-05 00:13:00 +0000 | [diff] [blame] | 1025 | /// Note that this routine emits an error if you call it with ::new or ::delete |
| 1026 | /// as the current tokens, so only call it in contexts where these are invalid. |
Douglas Gregor | 495c35d | 2009-08-25 22:51:20 +0000 | [diff] [blame] | 1027 | bool Parser::TryAnnotateTypeOrScopeToken(bool EnteringContext) { |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1028 | assert((Tok.is(tok::identifier) || Tok.is(tok::coloncolon) |
John McCall | ae03cb5 | 2009-12-19 00:35:18 +0000 | [diff] [blame] | 1029 | || Tok.is(tok::kw_typename) || Tok.is(tok::annot_cxxscope)) && |
Chris Lattner | 7452c6f | 2009-01-05 01:24:05 +0000 | [diff] [blame] | 1030 | "Cannot be a type or scope token!"); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1031 | |
Douglas Gregor | d57959a | 2009-03-27 23:10:48 +0000 | [diff] [blame] | 1032 | if (Tok.is(tok::kw_typename)) { |
| 1033 | // Parse a C++ typename-specifier, e.g., "typename T::type". |
| 1034 | // |
| 1035 | // typename-specifier: |
| 1036 | // 'typename' '::' [opt] nested-name-specifier identifier |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1037 | // 'typename' '::' [opt] nested-name-specifier template [opt] |
Douglas Gregor | 1734317 | 2009-04-01 00:28:59 +0000 | [diff] [blame] | 1038 | // simple-template-id |
Douglas Gregor | d57959a | 2009-03-27 23:10:48 +0000 | [diff] [blame] | 1039 | SourceLocation TypenameLoc = ConsumeToken(); |
| 1040 | CXXScopeSpec SS; |
Francois Pichet | 4147d30 | 2011-03-27 19:41:34 +0000 | [diff] [blame] | 1041 | if (ParseOptionalCXXScopeSpecifier(SS, /*ObjectType=*/ParsedType(), false, |
| 1042 | 0, /*IsTypename*/true)) |
John McCall | 9ba6166 | 2010-02-26 08:45:28 +0000 | [diff] [blame] | 1043 | return true; |
| 1044 | if (!SS.isSet()) { |
Douglas Gregor | d57959a | 2009-03-27 23:10:48 +0000 | [diff] [blame] | 1045 | Diag(Tok.getLocation(), diag::err_expected_qualified_after_typename); |
John McCall | 9ba6166 | 2010-02-26 08:45:28 +0000 | [diff] [blame] | 1046 | return true; |
Douglas Gregor | d57959a | 2009-03-27 23:10:48 +0000 | [diff] [blame] | 1047 | } |
| 1048 | |
| 1049 | TypeResult Ty; |
| 1050 | if (Tok.is(tok::identifier)) { |
| 1051 | // FIXME: check whether the next token is '<', first! |
Douglas Gregor | 23c94db | 2010-07-02 17:43:08 +0000 | [diff] [blame] | 1052 | Ty = Actions.ActOnTypenameType(getCurScope(), TypenameLoc, SS, |
Douglas Gregor | 1a15dae | 2010-06-16 22:31:08 +0000 | [diff] [blame] | 1053 | *Tok.getIdentifierInfo(), |
Douglas Gregor | d57959a | 2009-03-27 23:10:48 +0000 | [diff] [blame] | 1054 | Tok.getLocation()); |
Douglas Gregor | 1734317 | 2009-04-01 00:28:59 +0000 | [diff] [blame] | 1055 | } else if (Tok.is(tok::annot_template_id)) { |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1056 | TemplateIdAnnotation *TemplateId |
Douglas Gregor | 1734317 | 2009-04-01 00:28:59 +0000 | [diff] [blame] | 1057 | = static_cast<TemplateIdAnnotation *>(Tok.getAnnotationValue()); |
| 1058 | if (TemplateId->Kind == TNK_Function_template) { |
| 1059 | Diag(Tok, diag::err_typename_refers_to_non_type_template) |
| 1060 | << Tok.getAnnotationRange(); |
John McCall | 9ba6166 | 2010-02-26 08:45:28 +0000 | [diff] [blame] | 1061 | return true; |
Douglas Gregor | 1734317 | 2009-04-01 00:28:59 +0000 | [diff] [blame] | 1062 | } |
Douglas Gregor | d57959a | 2009-03-27 23:10:48 +0000 | [diff] [blame] | 1063 | |
Douglas Gregor | a02411e | 2011-02-27 22:46:49 +0000 | [diff] [blame] | 1064 | ASTTemplateArgsPtr TemplateArgsPtr(Actions, |
| 1065 | TemplateId->getTemplateArgs(), |
| 1066 | TemplateId->NumArgs); |
| 1067 | |
| 1068 | Ty = Actions.ActOnTypenameType(getCurScope(), TypenameLoc, SS, |
| 1069 | /*FIXME:*/SourceLocation(), |
| 1070 | TemplateId->Template, |
| 1071 | TemplateId->TemplateNameLoc, |
| 1072 | TemplateId->LAngleLoc, |
| 1073 | TemplateArgsPtr, |
| 1074 | TemplateId->RAngleLoc); |
Douglas Gregor | aa2187d | 2011-02-28 00:04:36 +0000 | [diff] [blame] | 1075 | TemplateId->Destroy(); |
Douglas Gregor | 1734317 | 2009-04-01 00:28:59 +0000 | [diff] [blame] | 1076 | } else { |
| 1077 | Diag(Tok, diag::err_expected_type_name_after_typename) |
| 1078 | << SS.getRange(); |
John McCall | 9ba6166 | 2010-02-26 08:45:28 +0000 | [diff] [blame] | 1079 | return true; |
Douglas Gregor | 1734317 | 2009-04-01 00:28:59 +0000 | [diff] [blame] | 1080 | } |
| 1081 | |
Sebastian Redl | 39d6711 | 2010-02-08 19:35:18 +0000 | [diff] [blame] | 1082 | SourceLocation EndLoc = Tok.getLastLoc(); |
Douglas Gregor | 1734317 | 2009-04-01 00:28:59 +0000 | [diff] [blame] | 1083 | Tok.setKind(tok::annot_typename); |
John McCall | b3d8748 | 2010-08-24 05:47:05 +0000 | [diff] [blame] | 1084 | setTypeAnnotation(Tok, Ty.isInvalid() ? ParsedType() : Ty.get()); |
Sebastian Redl | 39d6711 | 2010-02-08 19:35:18 +0000 | [diff] [blame] | 1085 | Tok.setAnnotationEndLoc(EndLoc); |
Douglas Gregor | 1734317 | 2009-04-01 00:28:59 +0000 | [diff] [blame] | 1086 | Tok.setLocation(TypenameLoc); |
| 1087 | PP.AnnotateCachedTokens(Tok); |
John McCall | 9ba6166 | 2010-02-26 08:45:28 +0000 | [diff] [blame] | 1088 | return false; |
Douglas Gregor | d57959a | 2009-03-27 23:10:48 +0000 | [diff] [blame] | 1089 | } |
| 1090 | |
John McCall | ae03cb5 | 2009-12-19 00:35:18 +0000 | [diff] [blame] | 1091 | // Remembers whether the token was originally a scope annotation. |
| 1092 | bool wasScopeAnnotation = Tok.is(tok::annot_cxxscope); |
| 1093 | |
Argyrios Kyrtzidis | eb83ecd | 2008-11-08 16:45:02 +0000 | [diff] [blame] | 1094 | CXXScopeSpec SS; |
Argyrios Kyrtzidis | 4bdd91c | 2008-11-26 21:41:52 +0000 | [diff] [blame] | 1095 | if (getLang().CPlusPlus) |
John McCall | b3d8748 | 2010-08-24 05:47:05 +0000 | [diff] [blame] | 1096 | if (ParseOptionalCXXScopeSpecifier(SS, ParsedType(), EnteringContext)) |
John McCall | 9ba6166 | 2010-02-26 08:45:28 +0000 | [diff] [blame] | 1097 | return true; |
Argyrios Kyrtzidis | eb83ecd | 2008-11-08 16:45:02 +0000 | [diff] [blame] | 1098 | |
| 1099 | if (Tok.is(tok::identifier)) { |
Chris Lattner | 608d1fc | 2009-01-05 01:49:50 +0000 | [diff] [blame] | 1100 | // Determine whether the identifier is a type name. |
John McCall | b3d8748 | 2010-08-24 05:47:05 +0000 | [diff] [blame] | 1101 | if (ParsedType Ty = Actions.getTypeName(*Tok.getIdentifierInfo(), |
| 1102 | Tok.getLocation(), getCurScope(), |
Fariborz Jahanian | 1e52dfc | 2011-02-08 18:05:59 +0000 | [diff] [blame] | 1103 | &SS, false, |
Douglas Gregor | 9e87687 | 2011-03-01 18:12:44 +0000 | [diff] [blame] | 1104 | NextToken().is(tok::period), |
| 1105 | ParsedType(), |
| 1106 | /*NonTrivialTypeSourceInfo*/true)) { |
Chris Lattner | 608d1fc | 2009-01-05 01:49:50 +0000 | [diff] [blame] | 1107 | // This is a typename. Replace the current token in-place with an |
| 1108 | // annotation type token. |
Chris Lattner | b31757b | 2009-01-06 05:06:21 +0000 | [diff] [blame] | 1109 | Tok.setKind(tok::annot_typename); |
John McCall | b3d8748 | 2010-08-24 05:47:05 +0000 | [diff] [blame] | 1110 | setTypeAnnotation(Tok, Ty); |
Chris Lattner | 608d1fc | 2009-01-05 01:49:50 +0000 | [diff] [blame] | 1111 | Tok.setAnnotationEndLoc(Tok.getLocation()); |
| 1112 | if (SS.isNotEmpty()) // it was a C++ qualified type name. |
| 1113 | Tok.setLocation(SS.getBeginLoc()); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1114 | |
Chris Lattner | 608d1fc | 2009-01-05 01:49:50 +0000 | [diff] [blame] | 1115 | // In case the tokens were cached, have Preprocessor replace |
| 1116 | // them with the annotation token. |
| 1117 | PP.AnnotateCachedTokens(Tok); |
John McCall | 9ba6166 | 2010-02-26 08:45:28 +0000 | [diff] [blame] | 1118 | return false; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1119 | } |
Douglas Gregor | 39a8de1 | 2009-02-25 19:37:18 +0000 | [diff] [blame] | 1120 | |
| 1121 | if (!getLang().CPlusPlus) { |
Chris Lattner | 608d1fc | 2009-01-05 01:49:50 +0000 | [diff] [blame] | 1122 | // If we're in C, we can't have :: tokens at all (the lexer won't return |
| 1123 | // them). If the identifier is not a type, then it can't be scope either, |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1124 | // just early exit. |
Chris Lattner | 608d1fc | 2009-01-05 01:49:50 +0000 | [diff] [blame] | 1125 | return false; |
Argyrios Kyrtzidis | eb83ecd | 2008-11-08 16:45:02 +0000 | [diff] [blame] | 1126 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1127 | |
Douglas Gregor | 39a8de1 | 2009-02-25 19:37:18 +0000 | [diff] [blame] | 1128 | // If this is a template-id, annotate with a template-id or type token. |
Douglas Gregor | 55f6b14 | 2009-02-09 18:46:07 +0000 | [diff] [blame] | 1129 | if (NextToken().is(tok::less)) { |
Douglas Gregor | 7532dc6 | 2009-03-30 22:58:21 +0000 | [diff] [blame] | 1130 | TemplateTy Template; |
Douglas Gregor | 014e88d | 2009-11-03 23:16:33 +0000 | [diff] [blame] | 1131 | UnqualifiedId TemplateName; |
| 1132 | TemplateName.setIdentifier(Tok.getIdentifierInfo(), Tok.getLocation()); |
Douglas Gregor | 1fd6d44 | 2010-05-21 23:18:07 +0000 | [diff] [blame] | 1133 | bool MemberOfUnknownSpecialization; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1134 | if (TemplateNameKind TNK |
Abramo Bagnara | 7c15353 | 2010-08-06 12:11:11 +0000 | [diff] [blame] | 1135 | = Actions.isTemplateName(getCurScope(), SS, |
| 1136 | /*hasTemplateKeyword=*/false, TemplateName, |
John McCall | b3d8748 | 2010-08-24 05:47:05 +0000 | [diff] [blame] | 1137 | /*ObjectType=*/ ParsedType(), |
| 1138 | EnteringContext, |
Abramo Bagnara | 7c15353 | 2010-08-06 12:11:11 +0000 | [diff] [blame] | 1139 | Template, MemberOfUnknownSpecialization)) { |
Douglas Gregor | ca1bdd7 | 2009-11-04 00:56:37 +0000 | [diff] [blame] | 1140 | // Consume the identifier. |
| 1141 | ConsumeToken(); |
Douglas Gregor | 059101f | 2011-03-02 00:47:37 +0000 | [diff] [blame] | 1142 | if (AnnotateTemplateIdToken(Template, TNK, SS, TemplateName)) { |
Chris Lattner | c8e27cc | 2009-06-26 04:27:47 +0000 | [diff] [blame] | 1143 | // If an unrecoverable error occurred, we need to return true here, |
| 1144 | // because the token stream is in a damaged state. We may not return |
| 1145 | // a valid identifier. |
John McCall | 9ba6166 | 2010-02-26 08:45:28 +0000 | [diff] [blame] | 1146 | return true; |
Chris Lattner | c8e27cc | 2009-06-26 04:27:47 +0000 | [diff] [blame] | 1147 | } |
Douglas Gregor | ca1bdd7 | 2009-11-04 00:56:37 +0000 | [diff] [blame] | 1148 | } |
Douglas Gregor | 55f6b14 | 2009-02-09 18:46:07 +0000 | [diff] [blame] | 1149 | } |
Douglas Gregor | d6fb7ef | 2008-12-18 19:37:40 +0000 | [diff] [blame] | 1150 | |
Douglas Gregor | 39a8de1 | 2009-02-25 19:37:18 +0000 | [diff] [blame] | 1151 | // The current token, which is either an identifier or a |
| 1152 | // template-id, is not part of the annotation. Fall through to |
| 1153 | // push that token back into the stream and complete the C++ scope |
| 1154 | // specifier annotation. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1155 | } |
Argyrios Kyrtzidis | eb83ecd | 2008-11-08 16:45:02 +0000 | [diff] [blame] | 1156 | |
Douglas Gregor | 39a8de1 | 2009-02-25 19:37:18 +0000 | [diff] [blame] | 1157 | if (Tok.is(tok::annot_template_id)) { |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1158 | TemplateIdAnnotation *TemplateId |
Douglas Gregor | 39a8de1 | 2009-02-25 19:37:18 +0000 | [diff] [blame] | 1159 | = static_cast<TemplateIdAnnotation *>(Tok.getAnnotationValue()); |
Douglas Gregor | c45c232 | 2009-03-31 00:43:58 +0000 | [diff] [blame] | 1160 | if (TemplateId->Kind == TNK_Type_template) { |
Douglas Gregor | 39a8de1 | 2009-02-25 19:37:18 +0000 | [diff] [blame] | 1161 | // A template-id that refers to a type was parsed into a |
| 1162 | // template-id annotation in a context where we weren't allowed |
| 1163 | // to produce a type annotation token. Update the template-id |
| 1164 | // annotation token to a type annotation token now. |
Douglas Gregor | 059101f | 2011-03-02 00:47:37 +0000 | [diff] [blame] | 1165 | AnnotateTemplateIdTokenAsType(); |
John McCall | 9ba6166 | 2010-02-26 08:45:28 +0000 | [diff] [blame] | 1166 | return false; |
Douglas Gregor | 39a8de1 | 2009-02-25 19:37:18 +0000 | [diff] [blame] | 1167 | } |
| 1168 | } |
Douglas Gregor | d6fb7ef | 2008-12-18 19:37:40 +0000 | [diff] [blame] | 1169 | |
Chris Lattner | 6ec76d4 | 2009-01-04 22:32:19 +0000 | [diff] [blame] | 1170 | if (SS.isEmpty()) |
John McCall | 9ba6166 | 2010-02-26 08:45:28 +0000 | [diff] [blame] | 1171 | return false; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1172 | |
Chris Lattner | 6ec76d4 | 2009-01-04 22:32:19 +0000 | [diff] [blame] | 1173 | // A C++ scope specifier that isn't followed by a typename. |
| 1174 | // Push the current token back into the token stream (or revert it if it is |
| 1175 | // cached) and use an annotation scope token for current token. |
| 1176 | if (PP.isBacktrackEnabled()) |
| 1177 | PP.RevertCachedTokens(1); |
| 1178 | else |
| 1179 | PP.EnterToken(Tok); |
| 1180 | Tok.setKind(tok::annot_cxxscope); |
Douglas Gregor | c34348a | 2011-02-24 17:54:50 +0000 | [diff] [blame] | 1181 | Tok.setAnnotationValue(Actions.SaveNestedNameSpecifierAnnotation(SS)); |
Chris Lattner | 6ec76d4 | 2009-01-04 22:32:19 +0000 | [diff] [blame] | 1182 | Tok.setAnnotationRange(SS.getRange()); |
Argyrios Kyrtzidis | eb83ecd | 2008-11-08 16:45:02 +0000 | [diff] [blame] | 1183 | |
John McCall | ae03cb5 | 2009-12-19 00:35:18 +0000 | [diff] [blame] | 1184 | // In case the tokens were cached, have Preprocessor replace them |
| 1185 | // with the annotation token. We don't need to do this if we've |
| 1186 | // just reverted back to the state we were in before being called. |
| 1187 | if (!wasScopeAnnotation) |
| 1188 | PP.AnnotateCachedTokens(Tok); |
John McCall | 9ba6166 | 2010-02-26 08:45:28 +0000 | [diff] [blame] | 1189 | return false; |
Argyrios Kyrtzidis | eb83ecd | 2008-11-08 16:45:02 +0000 | [diff] [blame] | 1190 | } |
| 1191 | |
| 1192 | /// TryAnnotateScopeToken - Like TryAnnotateTypeOrScopeToken but only |
Douglas Gregor | 39a8de1 | 2009-02-25 19:37:18 +0000 | [diff] [blame] | 1193 | /// annotates C++ scope specifiers and template-ids. This returns |
Chris Lattner | c8e27cc | 2009-06-26 04:27:47 +0000 | [diff] [blame] | 1194 | /// true if the token was annotated or there was an error that could not be |
| 1195 | /// recovered from. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1196 | /// |
Chris Lattner | 55a7cef | 2009-01-05 00:13:00 +0000 | [diff] [blame] | 1197 | /// Note that this routine emits an error if you call it with ::new or ::delete |
| 1198 | /// as the current tokens, so only call it in contexts where these are invalid. |
Douglas Gregor | 495c35d | 2009-08-25 22:51:20 +0000 | [diff] [blame] | 1199 | bool Parser::TryAnnotateCXXScopeToken(bool EnteringContext) { |
Argyrios Kyrtzidis | 4bdd91c | 2008-11-26 21:41:52 +0000 | [diff] [blame] | 1200 | assert(getLang().CPlusPlus && |
Chris Lattner | 6ec76d4 | 2009-01-04 22:32:19 +0000 | [diff] [blame] | 1201 | "Call sites of this function should be guarded by checking for C++"); |
Chris Lattner | 7452c6f | 2009-01-05 01:24:05 +0000 | [diff] [blame] | 1202 | assert((Tok.is(tok::identifier) || Tok.is(tok::coloncolon)) && |
| 1203 | "Cannot be a type or scope token!"); |
Argyrios Kyrtzidis | eb83ecd | 2008-11-08 16:45:02 +0000 | [diff] [blame] | 1204 | |
Argyrios Kyrtzidis | 4bdd91c | 2008-11-26 21:41:52 +0000 | [diff] [blame] | 1205 | CXXScopeSpec SS; |
John McCall | b3d8748 | 2010-08-24 05:47:05 +0000 | [diff] [blame] | 1206 | if (ParseOptionalCXXScopeSpecifier(SS, ParsedType(), EnteringContext)) |
John McCall | 9ba6166 | 2010-02-26 08:45:28 +0000 | [diff] [blame] | 1207 | return true; |
Jeffrey Yasskin | edc2877 | 2010-04-07 23:29:58 +0000 | [diff] [blame] | 1208 | if (SS.isEmpty()) |
John McCall | 9ba6166 | 2010-02-26 08:45:28 +0000 | [diff] [blame] | 1209 | return false; |
Argyrios Kyrtzidis | eb83ecd | 2008-11-08 16:45:02 +0000 | [diff] [blame] | 1210 | |
Chris Lattner | 6ec76d4 | 2009-01-04 22:32:19 +0000 | [diff] [blame] | 1211 | // Push the current token back into the token stream (or revert it if it is |
| 1212 | // cached) and use an annotation scope token for current token. |
| 1213 | if (PP.isBacktrackEnabled()) |
| 1214 | PP.RevertCachedTokens(1); |
| 1215 | else |
| 1216 | PP.EnterToken(Tok); |
| 1217 | Tok.setKind(tok::annot_cxxscope); |
Douglas Gregor | c34348a | 2011-02-24 17:54:50 +0000 | [diff] [blame] | 1218 | Tok.setAnnotationValue(Actions.SaveNestedNameSpecifierAnnotation(SS)); |
Chris Lattner | 6ec76d4 | 2009-01-04 22:32:19 +0000 | [diff] [blame] | 1219 | Tok.setAnnotationRange(SS.getRange()); |
Argyrios Kyrtzidis | eb83ecd | 2008-11-08 16:45:02 +0000 | [diff] [blame] | 1220 | |
Chris Lattner | 6ec76d4 | 2009-01-04 22:32:19 +0000 | [diff] [blame] | 1221 | // In case the tokens were cached, have Preprocessor replace them with the |
| 1222 | // annotation token. |
| 1223 | PP.AnnotateCachedTokens(Tok); |
John McCall | 9ba6166 | 2010-02-26 08:45:28 +0000 | [diff] [blame] | 1224 | return false; |
Argyrios Kyrtzidis | eb83ecd | 2008-11-08 16:45:02 +0000 | [diff] [blame] | 1225 | } |
John McCall | 6c94a6d | 2009-11-03 19:33:12 +0000 | [diff] [blame] | 1226 | |
Argyrios Kyrtzidis | a6eb5f8 | 2010-10-08 02:39:23 +0000 | [diff] [blame] | 1227 | bool Parser::isTokenEqualOrMistypedEqualEqual(unsigned DiagID) { |
| 1228 | if (Tok.is(tok::equalequal)) { |
| 1229 | // We have '==' in a context that we would expect a '='. |
| 1230 | // The user probably made a typo, intending to type '='. Emit diagnostic, |
| 1231 | // fixit hint to turn '==' -> '=' and continue as if the user typed '='. |
| 1232 | Diag(Tok, DiagID) |
| 1233 | << FixItHint::CreateReplacement(SourceRange(Tok.getLocation()), |
| 1234 | getTokenSimpleSpelling(tok::equal)); |
| 1235 | return true; |
| 1236 | } |
| 1237 | |
| 1238 | return Tok.is(tok::equal); |
| 1239 | } |
| 1240 | |
Douglas Gregor | dc84534 | 2010-05-25 05:58:43 +0000 | [diff] [blame] | 1241 | void Parser::CodeCompletionRecovery() { |
Douglas Gregor | 23c94db | 2010-07-02 17:43:08 +0000 | [diff] [blame] | 1242 | for (Scope *S = getCurScope(); S; S = S->getParent()) { |
Douglas Gregor | dc84534 | 2010-05-25 05:58:43 +0000 | [diff] [blame] | 1243 | if (S->getFlags() & Scope::FnScope) { |
John McCall | f312b1e | 2010-08-26 23:41:50 +0000 | [diff] [blame] | 1244 | Actions.CodeCompleteOrdinaryName(getCurScope(), Sema::PCC_RecoveryInFunction); |
Douglas Gregor | dc84534 | 2010-05-25 05:58:43 +0000 | [diff] [blame] | 1245 | return; |
| 1246 | } |
| 1247 | |
| 1248 | if (S->getFlags() & Scope::ClassScope) { |
John McCall | f312b1e | 2010-08-26 23:41:50 +0000 | [diff] [blame] | 1249 | Actions.CodeCompleteOrdinaryName(getCurScope(), Sema::PCC_Class); |
Douglas Gregor | dc84534 | 2010-05-25 05:58:43 +0000 | [diff] [blame] | 1250 | return; |
| 1251 | } |
| 1252 | } |
| 1253 | |
John McCall | f312b1e | 2010-08-26 23:41:50 +0000 | [diff] [blame] | 1254 | Actions.CodeCompleteOrdinaryName(getCurScope(), Sema::PCC_Namespace); |
Douglas Gregor | dc84534 | 2010-05-25 05:58:43 +0000 | [diff] [blame] | 1255 | } |
| 1256 | |
John McCall | 6c94a6d | 2009-11-03 19:33:12 +0000 | [diff] [blame] | 1257 | // Anchor the Parser::FieldCallback vtable to this translation unit. |
| 1258 | // We use a spurious method instead of the destructor because |
| 1259 | // destroying FieldCallbacks can actually be slightly |
| 1260 | // performance-sensitive. |
| 1261 | void Parser::FieldCallback::_anchor() { |
| 1262 | } |
Douglas Gregor | f44e854 | 2010-08-24 19:08:16 +0000 | [diff] [blame] | 1263 | |
| 1264 | // Code-completion pass-through functions |
| 1265 | |
| 1266 | void Parser::CodeCompleteDirective(bool InConditional) { |
Douglas Gregor | f29c523 | 2010-08-24 22:20:20 +0000 | [diff] [blame] | 1267 | Actions.CodeCompletePreprocessorDirective(InConditional); |
Douglas Gregor | f44e854 | 2010-08-24 19:08:16 +0000 | [diff] [blame] | 1268 | } |
| 1269 | |
| 1270 | void Parser::CodeCompleteInConditionalExclusion() { |
| 1271 | Actions.CodeCompleteInPreprocessorConditionalExclusion(getCurScope()); |
| 1272 | } |
Douglas Gregor | 1fbb447 | 2010-08-24 20:21:13 +0000 | [diff] [blame] | 1273 | |
| 1274 | void Parser::CodeCompleteMacroName(bool IsDefinition) { |
Douglas Gregor | f29c523 | 2010-08-24 22:20:20 +0000 | [diff] [blame] | 1275 | Actions.CodeCompletePreprocessorMacroName(IsDefinition); |
| 1276 | } |
| 1277 | |
| 1278 | void Parser::CodeCompletePreprocessorExpression() { |
| 1279 | Actions.CodeCompletePreprocessorExpression(); |
| 1280 | } |
| 1281 | |
| 1282 | void Parser::CodeCompleteMacroArgument(IdentifierInfo *Macro, |
| 1283 | MacroInfo *MacroInfo, |
| 1284 | unsigned ArgumentIndex) { |
| 1285 | Actions.CodeCompletePreprocessorMacroArgument(getCurScope(), Macro, MacroInfo, |
| 1286 | ArgumentIndex); |
Douglas Gregor | 1fbb447 | 2010-08-24 20:21:13 +0000 | [diff] [blame] | 1287 | } |
Douglas Gregor | 55817af | 2010-08-25 17:04:25 +0000 | [diff] [blame] | 1288 | |
| 1289 | void Parser::CodeCompleteNaturalLanguage() { |
| 1290 | Actions.CodeCompleteNaturalLanguage(); |
| 1291 | } |