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" |
Francois Pichet | 8387e2a | 2011-04-22 22:18:13 +0000 | [diff] [blame] | 22 | #include "clang/AST/DeclTemplate.h" |
Francois Pichet | f986038 | 2011-05-07 17:30:27 +0000 | [diff] [blame] | 23 | #include "clang/AST/ASTConsumer.h" |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 24 | using namespace clang; |
| 25 | |
Douglas Gregor | b57791e | 2011-10-21 03:57:52 +0000 | [diff] [blame] | 26 | IdentifierInfo *Parser::getSEHExceptKeyword() { |
| 27 | // __except is accepted as a (contextual) keyword |
| 28 | if (!Ident__except && (getLang().MicrosoftExt || getLang().Borland)) |
| 29 | Ident__except = PP.getIdentifierInfo("__except"); |
| 30 | |
| 31 | return Ident__except; |
| 32 | } |
| 33 | |
John McCall | f312b1e | 2010-08-26 23:41:50 +0000 | [diff] [blame] | 34 | Parser::Parser(Preprocessor &pp, Sema &actions) |
Ted Kremenek | 614f96a | 2011-03-22 01:15:17 +0000 | [diff] [blame] | 35 | : PP(pp), Actions(actions), Diags(PP.getDiagnostics()), |
Douglas Gregor | 0fbda68 | 2010-09-15 14:51:05 +0000 | [diff] [blame] | 36 | GreaterThanIsOperator(true), ColonIsSacred(false), |
| 37 | InMessageExpression(false), TemplateParameterDepth(0) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 38 | Tok.setKind(tok::eof); |
Douglas Gregor | 23c94db | 2010-07-02 17:43:08 +0000 | [diff] [blame] | 39 | Actions.CurScope = 0; |
Chris Lattner | 9e344c6 | 2007-07-15 00:04:39 +0000 | [diff] [blame] | 40 | NumCachedScopes = 0; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 41 | ParenCount = BracketCount = BraceCount = 0; |
John McCall | d226f65 | 2010-08-21 09:40:31 +0000 | [diff] [blame] | 42 | ObjCImpDecl = 0; |
Daniel Dunbar | fcdd8fe | 2008-10-04 19:21:03 +0000 | [diff] [blame] | 43 | |
| 44 | // Add #pragma handlers. These are removed and destroyed in the |
| 45 | // destructor. |
Daniel Dunbar | cbb98ed | 2010-07-31 19:17:07 +0000 | [diff] [blame] | 46 | AlignHandler.reset(new PragmaAlignHandler(actions)); |
| 47 | PP.AddPragmaHandler(AlignHandler.get()); |
| 48 | |
Eli Friedman | aa8b0d1 | 2010-08-05 06:57:20 +0000 | [diff] [blame] | 49 | GCCVisibilityHandler.reset(new PragmaGCCVisibilityHandler(actions)); |
| 50 | PP.AddPragmaHandler("GCC", GCCVisibilityHandler.get()); |
| 51 | |
Argyrios Kyrtzidis | 9b36c3f | 2010-07-13 09:07:17 +0000 | [diff] [blame] | 52 | OptionsHandler.reset(new PragmaOptionsHandler(actions)); |
| 53 | PP.AddPragmaHandler(OptionsHandler.get()); |
Daniel Dunbar | 861800c | 2010-05-26 23:29:06 +0000 | [diff] [blame] | 54 | |
Argyrios Kyrtzidis | 9b36c3f | 2010-07-13 09:07:17 +0000 | [diff] [blame] | 55 | PackHandler.reset(new PragmaPackHandler(actions)); |
| 56 | PP.AddPragmaHandler(PackHandler.get()); |
Fariborz Jahanian | 62c9258 | 2011-04-25 18:49:15 +0000 | [diff] [blame] | 57 | |
| 58 | MSStructHandler.reset(new PragmaMSStructHandler(actions)); |
| 59 | PP.AddPragmaHandler(MSStructHandler.get()); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 60 | |
Argyrios Kyrtzidis | 9b36c3f | 2010-07-13 09:07:17 +0000 | [diff] [blame] | 61 | UnusedHandler.reset(new PragmaUnusedHandler(actions, *this)); |
| 62 | PP.AddPragmaHandler(UnusedHandler.get()); |
Eli Friedman | 9991479 | 2009-06-05 00:49:58 +0000 | [diff] [blame] | 63 | |
Argyrios Kyrtzidis | 9b36c3f | 2010-07-13 09:07:17 +0000 | [diff] [blame] | 64 | WeakHandler.reset(new PragmaWeakHandler(actions)); |
| 65 | PP.AddPragmaHandler(WeakHandler.get()); |
Peter Collingbourne | 321b817 | 2011-02-14 01:42:35 +0000 | [diff] [blame] | 66 | |
| 67 | FPContractHandler.reset(new PragmaFPContractHandler(actions, *this)); |
| 68 | PP.AddPragmaHandler("STDC", FPContractHandler.get()); |
Peter Collingbourne | f315fa8 | 2011-02-14 01:42:53 +0000 | [diff] [blame] | 69 | |
| 70 | if (getLang().OpenCL) { |
| 71 | OpenCLExtensionHandler.reset( |
| 72 | new PragmaOpenCLExtensionHandler(actions, *this)); |
| 73 | PP.AddPragmaHandler("OPENCL", OpenCLExtensionHandler.get()); |
| 74 | |
| 75 | PP.AddPragmaHandler("OPENCL", FPContractHandler.get()); |
| 76 | } |
Douglas Gregor | f44e854 | 2010-08-24 19:08:16 +0000 | [diff] [blame] | 77 | |
| 78 | PP.setCodeCompletionHandler(*this); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 79 | } |
| 80 | |
Chris Lattner | 0102c30 | 2009-03-05 07:24:28 +0000 | [diff] [blame] | 81 | /// If a crash happens while the parser is active, print out a line indicating |
| 82 | /// what the current token is. |
Chris Lattner | 5f9e272 | 2011-07-23 10:55:15 +0000 | [diff] [blame] | 83 | void PrettyStackTraceParserEntry::print(raw_ostream &OS) const { |
Chris Lattner | 0102c30 | 2009-03-05 07:24:28 +0000 | [diff] [blame] | 84 | const Token &Tok = P.getCurToken(); |
Chris Lattner | ddcbc0a | 2009-03-05 07:27:50 +0000 | [diff] [blame] | 85 | if (Tok.is(tok::eof)) { |
Chris Lattner | 0102c30 | 2009-03-05 07:24:28 +0000 | [diff] [blame] | 86 | OS << "<eof> parser at end of file\n"; |
| 87 | return; |
| 88 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 89 | |
Chris Lattner | ddcbc0a | 2009-03-05 07:27:50 +0000 | [diff] [blame] | 90 | if (Tok.getLocation().isInvalid()) { |
| 91 | OS << "<unknown> parser at unknown location\n"; |
| 92 | return; |
| 93 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 94 | |
Chris Lattner | 0102c30 | 2009-03-05 07:24:28 +0000 | [diff] [blame] | 95 | const Preprocessor &PP = P.getPreprocessor(); |
| 96 | Tok.getLocation().print(OS, PP.getSourceManager()); |
Daniel Dunbar | 9fa31dd | 2009-10-17 06:13:04 +0000 | [diff] [blame] | 97 | if (Tok.isAnnotation()) |
| 98 | OS << ": at annotation token \n"; |
| 99 | else |
| 100 | OS << ": current parser token '" << PP.getSpelling(Tok) << "'\n"; |
Douglas Gregor | f780abc | 2008-12-30 03:27:21 +0000 | [diff] [blame] | 101 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 102 | |
Chris Lattner | 0102c30 | 2009-03-05 07:24:28 +0000 | [diff] [blame] | 103 | |
Chris Lattner | 3cbfe2c | 2008-11-22 00:59:29 +0000 | [diff] [blame] | 104 | DiagnosticBuilder Parser::Diag(SourceLocation Loc, unsigned DiagID) { |
Argyrios Kyrtzidis | 33e4e70 | 2010-11-18 20:06:41 +0000 | [diff] [blame] | 105 | return Diags.Report(Loc, DiagID); |
Chris Lattner | 1ab3b96 | 2008-11-18 07:48:38 +0000 | [diff] [blame] | 106 | } |
| 107 | |
Chris Lattner | 3cbfe2c | 2008-11-22 00:59:29 +0000 | [diff] [blame] | 108 | DiagnosticBuilder Parser::Diag(const Token &Tok, unsigned DiagID) { |
Chris Lattner | 1ab3b96 | 2008-11-18 07:48:38 +0000 | [diff] [blame] | 109 | return Diag(Tok.getLocation(), DiagID); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 110 | } |
| 111 | |
Douglas Gregor | 4b2d3f7 | 2009-02-26 21:00:50 +0000 | [diff] [blame] | 112 | /// \brief Emits a diagnostic suggesting parentheses surrounding a |
| 113 | /// given range. |
| 114 | /// |
| 115 | /// \param Loc The location where we'll emit the diagnostic. |
| 116 | /// \param Loc The kind of diagnostic to emit. |
| 117 | /// \param ParenRange Source range enclosing code that should be parenthesized. |
| 118 | void Parser::SuggestParentheses(SourceLocation Loc, unsigned DK, |
| 119 | SourceRange ParenRange) { |
Douglas Gregor | b2fb6de | 2009-02-27 17:53:17 +0000 | [diff] [blame] | 120 | SourceLocation EndLoc = PP.getLocForEndOfToken(ParenRange.getEnd()); |
| 121 | if (!ParenRange.getEnd().isFileID() || EndLoc.isInvalid()) { |
Douglas Gregor | 4b2d3f7 | 2009-02-26 21:00:50 +0000 | [diff] [blame] | 122 | // We can't display the parentheses, so just dig the |
| 123 | // warning/error and return. |
| 124 | Diag(Loc, DK); |
| 125 | return; |
| 126 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 127 | |
| 128 | Diag(Loc, DK) |
Douglas Gregor | 849b243 | 2010-03-31 17:46:05 +0000 | [diff] [blame] | 129 | << FixItHint::CreateInsertion(ParenRange.getBegin(), "(") |
| 130 | << FixItHint::CreateInsertion(EndLoc, ")"); |
Douglas Gregor | 4b2d3f7 | 2009-02-26 21:00:50 +0000 | [diff] [blame] | 131 | } |
| 132 | |
John McCall | 837b1a3 | 2010-09-07 18:31:03 +0000 | [diff] [blame] | 133 | static bool IsCommonTypo(tok::TokenKind ExpectedTok, const Token &Tok) { |
| 134 | switch (ExpectedTok) { |
| 135 | case tok::semi: return Tok.is(tok::colon); // : for ; |
| 136 | default: return false; |
| 137 | } |
| 138 | } |
| 139 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 140 | /// ExpectAndConsume - The parser expects that 'ExpectedTok' is next in the |
| 141 | /// input. If so, it is consumed and false is returned. |
| 142 | /// |
| 143 | /// If the input is malformed, this emits the specified diagnostic. Next, if |
| 144 | /// SkipToTok is specified, it calls SkipUntil(SkipToTok). Finally, true is |
| 145 | /// returned. |
| 146 | bool Parser::ExpectAndConsume(tok::TokenKind ExpectedTok, unsigned DiagID, |
| 147 | const char *Msg, tok::TokenKind SkipToTok) { |
Douglas Gregor | dc84534 | 2010-05-25 05:58:43 +0000 | [diff] [blame] | 148 | if (Tok.is(ExpectedTok) || Tok.is(tok::code_completion)) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 149 | ConsumeAnyToken(); |
| 150 | return false; |
| 151 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 152 | |
John McCall | 837b1a3 | 2010-09-07 18:31:03 +0000 | [diff] [blame] | 153 | // Detect common single-character typos and resume. |
| 154 | if (IsCommonTypo(ExpectedTok, Tok)) { |
| 155 | SourceLocation Loc = Tok.getLocation(); |
| 156 | Diag(Loc, DiagID) |
| 157 | << Msg |
| 158 | << FixItHint::CreateReplacement(SourceRange(Loc), |
| 159 | getTokenSimpleSpelling(ExpectedTok)); |
| 160 | ConsumeAnyToken(); |
| 161 | |
| 162 | // Pretend there wasn't a problem. |
| 163 | return false; |
| 164 | } |
| 165 | |
Douglas Gregor | 4b2d3f7 | 2009-02-26 21:00:50 +0000 | [diff] [blame] | 166 | const char *Spelling = 0; |
Douglas Gregor | b2fb6de | 2009-02-27 17:53:17 +0000 | [diff] [blame] | 167 | SourceLocation EndLoc = PP.getLocForEndOfToken(PrevTokLocation); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 168 | if (EndLoc.isValid() && |
Douglas Gregor | b2fb6de | 2009-02-27 17:53:17 +0000 | [diff] [blame] | 169 | (Spelling = tok::getTokenSimpleSpelling(ExpectedTok))) { |
Douglas Gregor | 4b2d3f7 | 2009-02-26 21:00:50 +0000 | [diff] [blame] | 170 | // Show what code to insert to fix this problem. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 171 | Diag(EndLoc, DiagID) |
Douglas Gregor | 4b2d3f7 | 2009-02-26 21:00:50 +0000 | [diff] [blame] | 172 | << Msg |
Douglas Gregor | 849b243 | 2010-03-31 17:46:05 +0000 | [diff] [blame] | 173 | << FixItHint::CreateInsertion(EndLoc, Spelling); |
Douglas Gregor | 4b2d3f7 | 2009-02-26 21:00:50 +0000 | [diff] [blame] | 174 | } else |
| 175 | Diag(Tok, DiagID) << Msg; |
| 176 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 177 | if (SkipToTok != tok::unknown) |
| 178 | SkipUntil(SkipToTok); |
| 179 | return true; |
| 180 | } |
| 181 | |
Douglas Gregor | 9ba23b4 | 2010-09-07 15:23:11 +0000 | [diff] [blame] | 182 | bool Parser::ExpectAndConsumeSemi(unsigned DiagID) { |
| 183 | if (Tok.is(tok::semi) || Tok.is(tok::code_completion)) { |
| 184 | ConsumeAnyToken(); |
| 185 | return false; |
| 186 | } |
| 187 | |
| 188 | if ((Tok.is(tok::r_paren) || Tok.is(tok::r_square)) && |
| 189 | NextToken().is(tok::semi)) { |
| 190 | Diag(Tok, diag::err_extraneous_token_before_semi) |
| 191 | << PP.getSpelling(Tok) |
| 192 | << FixItHint::CreateRemoval(Tok.getLocation()); |
| 193 | ConsumeAnyToken(); // The ')' or ']'. |
| 194 | ConsumeToken(); // The ';'. |
| 195 | return false; |
| 196 | } |
| 197 | |
| 198 | return ExpectAndConsume(tok::semi, DiagID); |
| 199 | } |
| 200 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 201 | //===----------------------------------------------------------------------===// |
| 202 | // Error recovery. |
| 203 | //===----------------------------------------------------------------------===// |
| 204 | |
| 205 | /// SkipUntil - Read tokens until we get to the specified token, then consume |
Chris Lattner | 012cf46 | 2007-07-24 17:03:04 +0000 | [diff] [blame] | 206 | /// it (unless DontConsume is true). Because we cannot guarantee that the |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 207 | /// token will ever occur, this skips to the next token, or to some likely |
| 208 | /// good stopping point. If StopAtSemi is true, skipping will stop at a ';' |
| 209 | /// character. |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 210 | /// |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 211 | /// If SkipUntil finds the specified token, it returns true, otherwise it |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 212 | /// returns false. |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 213 | bool Parser::SkipUntil(const tok::TokenKind *Toks, unsigned NumToks, |
Argyrios Kyrtzidis | 3437f1f | 2011-01-03 19:44:02 +0000 | [diff] [blame] | 214 | bool StopAtSemi, bool DontConsume, |
| 215 | bool StopAtCodeCompletion) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 216 | // We always want this function to skip at least one token if the first token |
| 217 | // isn't T and if not at EOF. |
| 218 | bool isFirstTokenSkipped = true; |
| 219 | while (1) { |
| 220 | // If we found one of the tokens, stop and return true. |
| 221 | for (unsigned i = 0; i != NumToks; ++i) { |
Chris Lattner | 0007322 | 2007-10-09 17:23:58 +0000 | [diff] [blame] | 222 | if (Tok.is(Toks[i])) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 223 | if (DontConsume) { |
| 224 | // Noop, don't consume the token. |
| 225 | } else { |
| 226 | ConsumeAnyToken(); |
| 227 | } |
| 228 | return true; |
| 229 | } |
| 230 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 231 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 232 | switch (Tok.getKind()) { |
| 233 | case tok::eof: |
| 234 | // Ran out of tokens. |
| 235 | return false; |
Douglas Gregor | dc84534 | 2010-05-25 05:58:43 +0000 | [diff] [blame] | 236 | |
| 237 | case tok::code_completion: |
Argyrios Kyrtzidis | 3437f1f | 2011-01-03 19:44:02 +0000 | [diff] [blame] | 238 | if (!StopAtCodeCompletion) |
| 239 | ConsumeToken(); |
Douglas Gregor | dc84534 | 2010-05-25 05:58:43 +0000 | [diff] [blame] | 240 | return false; |
| 241 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 242 | case tok::l_paren: |
| 243 | // Recursively skip properly-nested parens. |
| 244 | ConsumeParen(); |
Argyrios Kyrtzidis | 3437f1f | 2011-01-03 19:44:02 +0000 | [diff] [blame] | 245 | SkipUntil(tok::r_paren, false, false, StopAtCodeCompletion); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 246 | break; |
| 247 | case tok::l_square: |
| 248 | // Recursively skip properly-nested square brackets. |
| 249 | ConsumeBracket(); |
Argyrios Kyrtzidis | 3437f1f | 2011-01-03 19:44:02 +0000 | [diff] [blame] | 250 | SkipUntil(tok::r_square, false, false, StopAtCodeCompletion); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 251 | break; |
| 252 | case tok::l_brace: |
| 253 | // Recursively skip properly-nested braces. |
| 254 | ConsumeBrace(); |
Argyrios Kyrtzidis | 3437f1f | 2011-01-03 19:44:02 +0000 | [diff] [blame] | 255 | SkipUntil(tok::r_brace, false, false, StopAtCodeCompletion); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 256 | break; |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 257 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 258 | // Okay, we found a ']' or '}' or ')', which we think should be balanced. |
| 259 | // Since the user wasn't looking for this token (if they were, it would |
| 260 | // already be handled), this isn't balanced. If there is a LHS token at a |
| 261 | // higher level, we will assume that this matches the unbalanced token |
| 262 | // and return it. Otherwise, this is a spurious RHS token, which we skip. |
| 263 | case tok::r_paren: |
| 264 | if (ParenCount && !isFirstTokenSkipped) |
| 265 | return false; // Matches something. |
| 266 | ConsumeParen(); |
| 267 | break; |
| 268 | case tok::r_square: |
| 269 | if (BracketCount && !isFirstTokenSkipped) |
| 270 | return false; // Matches something. |
| 271 | ConsumeBracket(); |
| 272 | break; |
| 273 | case tok::r_brace: |
| 274 | if (BraceCount && !isFirstTokenSkipped) |
| 275 | return false; // Matches something. |
| 276 | ConsumeBrace(); |
| 277 | break; |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 278 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 279 | case tok::string_literal: |
| 280 | case tok::wide_string_literal: |
Douglas Gregor | 5cee119 | 2011-07-27 05:40:30 +0000 | [diff] [blame] | 281 | case tok::utf8_string_literal: |
| 282 | case tok::utf16_string_literal: |
| 283 | case tok::utf32_string_literal: |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 284 | ConsumeStringToken(); |
| 285 | break; |
Fariborz Jahanian | 55edca9 | 2011-02-23 00:11:21 +0000 | [diff] [blame] | 286 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 287 | case tok::semi: |
| 288 | if (StopAtSemi) |
| 289 | return false; |
| 290 | // FALL THROUGH. |
| 291 | default: |
| 292 | // Skip this token. |
| 293 | ConsumeToken(); |
| 294 | break; |
| 295 | } |
| 296 | isFirstTokenSkipped = false; |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 297 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 298 | } |
| 299 | |
| 300 | //===----------------------------------------------------------------------===// |
| 301 | // Scope manipulation |
| 302 | //===----------------------------------------------------------------------===// |
| 303 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 304 | /// EnterScope - Start a new scope. |
| 305 | void Parser::EnterScope(unsigned ScopeFlags) { |
Chris Lattner | 9e344c6 | 2007-07-15 00:04:39 +0000 | [diff] [blame] | 306 | if (NumCachedScopes) { |
| 307 | Scope *N = ScopeCache[--NumCachedScopes]; |
Douglas Gregor | 23c94db | 2010-07-02 17:43:08 +0000 | [diff] [blame] | 308 | N->Init(getCurScope(), ScopeFlags); |
| 309 | Actions.CurScope = N; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 310 | } else { |
Argyrios Kyrtzidis | 9c4eb1f | 2010-11-19 00:19:12 +0000 | [diff] [blame] | 311 | Actions.CurScope = new Scope(getCurScope(), ScopeFlags, Diags); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 312 | } |
| 313 | } |
| 314 | |
| 315 | /// ExitScope - Pop a scope off the scope stack. |
| 316 | void Parser::ExitScope() { |
Douglas Gregor | 23c94db | 2010-07-02 17:43:08 +0000 | [diff] [blame] | 317 | assert(getCurScope() && "Scope imbalance!"); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 318 | |
Chris Lattner | 90ae68a | 2007-10-09 20:37:18 +0000 | [diff] [blame] | 319 | // Inform the actions module that this scope is going away if there are any |
| 320 | // decls in it. |
Douglas Gregor | 23c94db | 2010-07-02 17:43:08 +0000 | [diff] [blame] | 321 | if (!getCurScope()->decl_empty()) |
| 322 | Actions.ActOnPopScope(Tok.getLocation(), getCurScope()); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 323 | |
Douglas Gregor | 23c94db | 2010-07-02 17:43:08 +0000 | [diff] [blame] | 324 | Scope *OldScope = getCurScope(); |
| 325 | Actions.CurScope = OldScope->getParent(); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 326 | |
Chris Lattner | 9e344c6 | 2007-07-15 00:04:39 +0000 | [diff] [blame] | 327 | if (NumCachedScopes == ScopeCacheSize) |
| 328 | delete OldScope; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 329 | else |
Chris Lattner | 9e344c6 | 2007-07-15 00:04:39 +0000 | [diff] [blame] | 330 | ScopeCache[NumCachedScopes++] = OldScope; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 331 | } |
| 332 | |
Richard Smith | 7a614d8 | 2011-06-11 17:19:42 +0000 | [diff] [blame] | 333 | /// Set the flags for the current scope to ScopeFlags. If ManageFlags is false, |
| 334 | /// this object does nothing. |
| 335 | Parser::ParseScopeFlags::ParseScopeFlags(Parser *Self, unsigned ScopeFlags, |
| 336 | bool ManageFlags) |
| 337 | : CurScope(ManageFlags ? Self->getCurScope() : 0) { |
| 338 | if (CurScope) { |
| 339 | OldFlags = CurScope->getFlags(); |
| 340 | CurScope->setFlags(ScopeFlags); |
| 341 | } |
| 342 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 343 | |
Richard Smith | 7a614d8 | 2011-06-11 17:19:42 +0000 | [diff] [blame] | 344 | /// Restore the flags for the current scope to what they were before this |
| 345 | /// object overrode them. |
| 346 | Parser::ParseScopeFlags::~ParseScopeFlags() { |
| 347 | if (CurScope) |
| 348 | CurScope->setFlags(OldFlags); |
| 349 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 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 | |
Francois Pichet | 8387e2a | 2011-04-22 22:18:13 +0000 | [diff] [blame] | 365 | // Free LateParsedTemplatedFunction nodes. |
| 366 | for (LateParsedTemplateMapT::iterator it = LateParsedTemplateMap.begin(); |
| 367 | it != LateParsedTemplateMap.end(); ++it) |
| 368 | delete it->second; |
| 369 | |
Argyrios Kyrtzidis | 2fea224 | 2011-11-29 08:14:54 +0000 | [diff] [blame] | 370 | clearLateParsedObjCMethods(); |
| 371 | |
Daniel Dunbar | fcdd8fe | 2008-10-04 19:21:03 +0000 | [diff] [blame] | 372 | // Remove the pragma handlers we installed. |
Daniel Dunbar | cbb98ed | 2010-07-31 19:17:07 +0000 | [diff] [blame] | 373 | PP.RemovePragmaHandler(AlignHandler.get()); |
| 374 | AlignHandler.reset(); |
Eli Friedman | aa8b0d1 | 2010-08-05 06:57:20 +0000 | [diff] [blame] | 375 | PP.RemovePragmaHandler("GCC", GCCVisibilityHandler.get()); |
| 376 | GCCVisibilityHandler.reset(); |
Argyrios Kyrtzidis | 9b36c3f | 2010-07-13 09:07:17 +0000 | [diff] [blame] | 377 | PP.RemovePragmaHandler(OptionsHandler.get()); |
Daniel Dunbar | 861800c | 2010-05-26 23:29:06 +0000 | [diff] [blame] | 378 | OptionsHandler.reset(); |
Argyrios Kyrtzidis | 9b36c3f | 2010-07-13 09:07:17 +0000 | [diff] [blame] | 379 | PP.RemovePragmaHandler(PackHandler.get()); |
Ted Kremenek | 4726d03 | 2009-03-23 22:28:25 +0000 | [diff] [blame] | 380 | PackHandler.reset(); |
Fariborz Jahanian | 62c9258 | 2011-04-25 18:49:15 +0000 | [diff] [blame] | 381 | PP.RemovePragmaHandler(MSStructHandler.get()); |
| 382 | MSStructHandler.reset(); |
Argyrios Kyrtzidis | 9b36c3f | 2010-07-13 09:07:17 +0000 | [diff] [blame] | 383 | PP.RemovePragmaHandler(UnusedHandler.get()); |
Ted Kremenek | 4726d03 | 2009-03-23 22:28:25 +0000 | [diff] [blame] | 384 | UnusedHandler.reset(); |
Argyrios Kyrtzidis | 9b36c3f | 2010-07-13 09:07:17 +0000 | [diff] [blame] | 385 | PP.RemovePragmaHandler(WeakHandler.get()); |
Eli Friedman | 9991479 | 2009-06-05 00:49:58 +0000 | [diff] [blame] | 386 | WeakHandler.reset(); |
Peter Collingbourne | f315fa8 | 2011-02-14 01:42:53 +0000 | [diff] [blame] | 387 | |
| 388 | if (getLang().OpenCL) { |
| 389 | PP.RemovePragmaHandler("OPENCL", OpenCLExtensionHandler.get()); |
| 390 | OpenCLExtensionHandler.reset(); |
| 391 | PP.RemovePragmaHandler("OPENCL", FPContractHandler.get()); |
| 392 | } |
| 393 | |
Peter Collingbourne | 321b817 | 2011-02-14 01:42:35 +0000 | [diff] [blame] | 394 | PP.RemovePragmaHandler("STDC", FPContractHandler.get()); |
| 395 | FPContractHandler.reset(); |
Douglas Gregor | f44e854 | 2010-08-24 19:08:16 +0000 | [diff] [blame] | 396 | PP.clearCodeCompletionHandler(); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 397 | } |
| 398 | |
| 399 | /// Initialize - Warm up the parser. |
| 400 | /// |
| 401 | void Parser::Initialize() { |
Chris Lattner | 31e0572 | 2007-08-26 06:24:45 +0000 | [diff] [blame] | 402 | // Create the translation unit scope. Install it as the current scope. |
Douglas Gregor | 23c94db | 2010-07-02 17:43:08 +0000 | [diff] [blame] | 403 | assert(getCurScope() == 0 && "A scope is already active?"); |
Chris Lattner | 31e0572 | 2007-08-26 06:24:45 +0000 | [diff] [blame] | 404 | EnterScope(Scope::DeclScope); |
Douglas Gregor | c1a3e5e | 2010-08-25 18:07:12 +0000 | [diff] [blame] | 405 | Actions.ActOnTranslationUnitScope(getCurScope()); |
| 406 | |
| 407 | // Prime the lexer look-ahead. |
| 408 | ConsumeToken(); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 409 | |
Chris Lattner | 0007322 | 2007-10-09 17:23:58 +0000 | [diff] [blame] | 410 | if (Tok.is(tok::eof) && |
Chris Lattner | f726175 | 2007-08-25 05:47:03 +0000 | [diff] [blame] | 411 | !getLang().CPlusPlus) // Empty source file is an extension in C |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 412 | Diag(Tok, diag::ext_empty_source_file); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 413 | |
Chris Lattner | 34870da | 2007-08-29 22:54:08 +0000 | [diff] [blame] | 414 | // Initialization for Objective-C context sensitive keywords recognition. |
Ted Kremenek | a526c5c | 2008-01-07 19:49:32 +0000 | [diff] [blame] | 415 | // Referenced in Parser::ParseObjCTypeQualifierList. |
Chris Lattner | 34870da | 2007-08-29 22:54:08 +0000 | [diff] [blame] | 416 | if (getLang().ObjC1) { |
Ted Kremenek | a526c5c | 2008-01-07 19:49:32 +0000 | [diff] [blame] | 417 | ObjCTypeQuals[objc_in] = &PP.getIdentifierTable().get("in"); |
| 418 | ObjCTypeQuals[objc_out] = &PP.getIdentifierTable().get("out"); |
| 419 | ObjCTypeQuals[objc_inout] = &PP.getIdentifierTable().get("inout"); |
| 420 | ObjCTypeQuals[objc_oneway] = &PP.getIdentifierTable().get("oneway"); |
| 421 | ObjCTypeQuals[objc_bycopy] = &PP.getIdentifierTable().get("bycopy"); |
| 422 | ObjCTypeQuals[objc_byref] = &PP.getIdentifierTable().get("byref"); |
Chris Lattner | 34870da | 2007-08-29 22:54:08 +0000 | [diff] [blame] | 423 | } |
Daniel Dunbar | 662e8b5 | 2008-08-14 22:04:54 +0000 | [diff] [blame] | 424 | |
Douglas Gregor | e97179c | 2011-09-08 01:46:34 +0000 | [diff] [blame] | 425 | Ident_instancetype = 0; |
Anders Carlsson | 7eeb4ec | 2011-01-20 03:47:08 +0000 | [diff] [blame] | 426 | Ident_final = 0; |
| 427 | Ident_override = 0; |
Anders Carlsson | 1f3b6fd | 2011-01-16 23:56:42 +0000 | [diff] [blame] | 428 | |
Daniel Dunbar | 662e8b5 | 2008-08-14 22:04:54 +0000 | [diff] [blame] | 429 | Ident_super = &PP.getIdentifierTable().get("super"); |
John Thompson | 82287d1 | 2010-02-05 00:12:22 +0000 | [diff] [blame] | 430 | |
| 431 | if (getLang().AltiVec) { |
| 432 | Ident_vector = &PP.getIdentifierTable().get("vector"); |
| 433 | Ident_pixel = &PP.getIdentifierTable().get("pixel"); |
| 434 | } |
Douglas Gregor | 0a0d2b1 | 2011-03-23 00:50:03 +0000 | [diff] [blame] | 435 | |
| 436 | Ident_introduced = 0; |
| 437 | Ident_deprecated = 0; |
| 438 | Ident_obsoleted = 0; |
Douglas Gregor | b53e417 | 2011-03-26 03:35:55 +0000 | [diff] [blame] | 439 | Ident_unavailable = 0; |
John Wiegley | 28bbe4b | 2011-04-28 01:08:34 +0000 | [diff] [blame] | 440 | |
Douglas Gregor | b57791e | 2011-10-21 03:57:52 +0000 | [diff] [blame] | 441 | Ident__except = 0; |
| 442 | |
John Wiegley | 28bbe4b | 2011-04-28 01:08:34 +0000 | [diff] [blame] | 443 | Ident__exception_code = Ident__exception_info = Ident__abnormal_termination = 0; |
| 444 | Ident___exception_code = Ident___exception_info = Ident___abnormal_termination = 0; |
| 445 | Ident_GetExceptionCode = Ident_GetExceptionInfo = Ident_AbnormalTermination = 0; |
| 446 | |
| 447 | if(getLang().Borland) { |
| 448 | Ident__exception_info = PP.getIdentifierInfo("_exception_info"); |
| 449 | Ident___exception_info = PP.getIdentifierInfo("__exception_info"); |
| 450 | Ident_GetExceptionInfo = PP.getIdentifierInfo("GetExceptionInformation"); |
| 451 | Ident__exception_code = PP.getIdentifierInfo("_exception_code"); |
| 452 | Ident___exception_code = PP.getIdentifierInfo("__exception_code"); |
| 453 | Ident_GetExceptionCode = PP.getIdentifierInfo("GetExceptionCode"); |
| 454 | Ident__abnormal_termination = PP.getIdentifierInfo("_abnormal_termination"); |
| 455 | Ident___abnormal_termination = PP.getIdentifierInfo("__abnormal_termination"); |
| 456 | Ident_AbnormalTermination = PP.getIdentifierInfo("AbnormalTermination"); |
| 457 | |
| 458 | PP.SetPoisonReason(Ident__exception_code,diag::err_seh___except_block); |
| 459 | PP.SetPoisonReason(Ident___exception_code,diag::err_seh___except_block); |
| 460 | PP.SetPoisonReason(Ident_GetExceptionCode,diag::err_seh___except_block); |
| 461 | PP.SetPoisonReason(Ident__exception_info,diag::err_seh___except_filter); |
| 462 | PP.SetPoisonReason(Ident___exception_info,diag::err_seh___except_filter); |
| 463 | PP.SetPoisonReason(Ident_GetExceptionInfo,diag::err_seh___except_filter); |
| 464 | PP.SetPoisonReason(Ident__abnormal_termination,diag::err_seh___finally_block); |
| 465 | PP.SetPoisonReason(Ident___abnormal_termination,diag::err_seh___finally_block); |
| 466 | PP.SetPoisonReason(Ident_AbnormalTermination,diag::err_seh___finally_block); |
| 467 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 468 | } |
| 469 | |
| 470 | /// ParseTopLevelDecl - Parse one top-level declaration, return whatever the |
| 471 | /// action tells us to. This returns true if the EOF was encountered. |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 472 | bool Parser::ParseTopLevelDecl(DeclGroupPtrTy &Result) { |
Argyrios Kyrtzidis | 25a7676 | 2011-06-22 06:09:49 +0000 | [diff] [blame] | 473 | DelayedCleanupPoint CleanupRAII(TopLevelDeclCleanupPool); |
Argyrios Kyrtzidis | b918d0f | 2011-01-17 18:58:44 +0000 | [diff] [blame] | 474 | |
| 475 | while (Tok.is(tok::annot_pragma_unused)) |
| 476 | HandlePragmaUnused(); |
| 477 | |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 478 | Result = DeclGroupPtrTy(); |
Chris Lattner | 9299f3f | 2008-08-23 03:19:52 +0000 | [diff] [blame] | 479 | if (Tok.is(tok::eof)) { |
Francois Pichet | 8387e2a | 2011-04-22 22:18:13 +0000 | [diff] [blame] | 480 | // Late template parsing can begin. |
| 481 | if (getLang().DelayedTemplateParsing) |
| 482 | Actions.SetLateTemplateParser(LateTemplateParserCallback, this); |
| 483 | |
Chris Lattner | 9299f3f | 2008-08-23 03:19:52 +0000 | [diff] [blame] | 484 | Actions.ActOnEndOfTranslationUnit(); |
| 485 | return true; |
| 486 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 487 | |
John McCall | 0b7e678 | 2011-03-24 11:26:52 +0000 | [diff] [blame] | 488 | ParsedAttributesWithRange attrs(AttrFactory); |
John McCall | 7f040a9 | 2010-12-24 02:08:15 +0000 | [diff] [blame] | 489 | MaybeParseCXX0XAttributes(attrs); |
| 490 | MaybeParseMicrosoftAttributes(attrs); |
Francois Pichet | 334d47e | 2010-10-11 12:59:39 +0000 | [diff] [blame] | 491 | |
John McCall | 7f040a9 | 2010-12-24 02:08:15 +0000 | [diff] [blame] | 492 | Result = ParseExternalDeclaration(attrs); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 493 | return false; |
| 494 | } |
| 495 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 496 | /// ParseTranslationUnit: |
| 497 | /// translation-unit: [C99 6.9] |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 498 | /// external-declaration |
| 499 | /// translation-unit external-declaration |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 500 | void Parser::ParseTranslationUnit() { |
Douglas Gregor | 8935b8b | 2008-12-10 06:34:36 +0000 | [diff] [blame] | 501 | Initialize(); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 502 | |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 503 | DeclGroupPtrTy Res; |
Steve Naroff | 89307ff | 2007-11-29 23:05:20 +0000 | [diff] [blame] | 504 | while (!ParseTopLevelDecl(Res)) |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 505 | /*parse them all*/; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 506 | |
Chris Lattner | 06f5485 | 2008-08-23 02:00:52 +0000 | [diff] [blame] | 507 | ExitScope(); |
Douglas Gregor | 23c94db | 2010-07-02 17:43:08 +0000 | [diff] [blame] | 508 | assert(getCurScope() == 0 && "Scope imbalance!"); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 509 | } |
| 510 | |
| 511 | /// ParseExternalDeclaration: |
Chris Lattner | 90b93d6 | 2008-12-08 21:59:01 +0000 | [diff] [blame] | 512 | /// |
Douglas Gregor | c19923d | 2008-11-21 16:10:08 +0000 | [diff] [blame] | 513 | /// external-declaration: [C99 6.9], declaration: [C++ dcl.dcl] |
Chris Lattner | c301815 | 2007-08-10 20:57:02 +0000 | [diff] [blame] | 514 | /// function-definition |
| 515 | /// declaration |
Douglas Gregor | a1d71ae | 2009-08-24 12:17:54 +0000 | [diff] [blame] | 516 | /// [C++0x] empty-declaration |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 517 | /// [GNU] asm-definition |
Chris Lattner | c301815 | 2007-08-10 20:57:02 +0000 | [diff] [blame] | 518 | /// [GNU] __extension__ external-declaration |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 519 | /// [OBJC] objc-class-definition |
| 520 | /// [OBJC] objc-class-declaration |
| 521 | /// [OBJC] objc-alias-declaration |
| 522 | /// [OBJC] objc-protocol-definition |
| 523 | /// [OBJC] objc-method-definition |
| 524 | /// [OBJC] @end |
Douglas Gregor | c19923d | 2008-11-21 16:10:08 +0000 | [diff] [blame] | 525 | /// [C++] linkage-specification |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 526 | /// [GNU] asm-definition: |
| 527 | /// simple-asm-expr ';' |
| 528 | /// |
Douglas Gregor | a1d71ae | 2009-08-24 12:17:54 +0000 | [diff] [blame] | 529 | /// [C++0x] empty-declaration: |
| 530 | /// ';' |
| 531 | /// |
Douglas Gregor | 45f9655 | 2009-09-04 06:33:52 +0000 | [diff] [blame] | 532 | /// [C++0x/GNU] 'extern' 'template' declaration |
John McCall | 7f040a9 | 2010-12-24 02:08:15 +0000 | [diff] [blame] | 533 | Parser::DeclGroupPtrTy |
| 534 | Parser::ParseExternalDeclaration(ParsedAttributesWithRange &attrs, |
| 535 | ParsingDeclSpec *DS) { |
Argyrios Kyrtzidis | 25a7676 | 2011-06-22 06:09:49 +0000 | [diff] [blame] | 536 | DelayedCleanupPoint CleanupRAII(TopLevelDeclCleanupPool); |
Argyrios Kyrtzidis | 36d3680 | 2010-06-17 10:52:18 +0000 | [diff] [blame] | 537 | ParenBraceBracketBalancer BalancerRAIIObj(*this); |
Argyrios Kyrtzidis | 7d10087 | 2011-09-04 03:32:15 +0000 | [diff] [blame] | 538 | |
| 539 | if (PP.isCodeCompletionReached()) { |
| 540 | cutOffParsing(); |
| 541 | return DeclGroupPtrTy(); |
| 542 | } |
| 543 | |
John McCall | d226f65 | 2010-08-21 09:40:31 +0000 | [diff] [blame] | 544 | Decl *SingleDecl = 0; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 545 | switch (Tok.getKind()) { |
| 546 | case tok::semi: |
Richard Smith | 7fe6208 | 2011-10-15 05:09:34 +0000 | [diff] [blame] | 547 | Diag(Tok, getLang().CPlusPlus0x ? |
| 548 | diag::warn_cxx98_compat_top_level_semi : diag::ext_top_level_semi) |
| 549 | << FixItHint::CreateRemoval(Tok.getLocation()); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 550 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 551 | ConsumeToken(); |
| 552 | // TODO: Invoke action for top-level semicolon. |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 553 | return DeclGroupPtrTy(); |
Chris Lattner | 90b93d6 | 2008-12-08 21:59:01 +0000 | [diff] [blame] | 554 | case tok::r_brace: |
Nico Weber | 883692e | 2012-01-17 01:04:27 +0000 | [diff] [blame] | 555 | Diag(Tok, diag::err_extraneous_closing_brace); |
Chris Lattner | 90b93d6 | 2008-12-08 21:59:01 +0000 | [diff] [blame] | 556 | ConsumeBrace(); |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 557 | return DeclGroupPtrTy(); |
Chris Lattner | 90b93d6 | 2008-12-08 21:59:01 +0000 | [diff] [blame] | 558 | case tok::eof: |
| 559 | Diag(Tok, diag::err_expected_external_declaration); |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 560 | return DeclGroupPtrTy(); |
Chris Lattner | c301815 | 2007-08-10 20:57:02 +0000 | [diff] [blame] | 561 | case tok::kw___extension__: { |
Chris Lattner | c46d1a1 | 2008-10-20 06:45:43 +0000 | [diff] [blame] | 562 | // __extension__ silences extension warnings in the subexpression. |
| 563 | ExtensionRAIIObject O(Diags); // Use RAII to do this. |
Chris Lattner | 39146d6 | 2008-10-20 06:51:33 +0000 | [diff] [blame] | 564 | ConsumeToken(); |
John McCall | 7f040a9 | 2010-12-24 02:08:15 +0000 | [diff] [blame] | 565 | return ParseExternalDeclaration(attrs); |
Chris Lattner | c301815 | 2007-08-10 20:57:02 +0000 | [diff] [blame] | 566 | } |
Anders Carlsson | dfab6cb | 2008-02-08 00:33:21 +0000 | [diff] [blame] | 567 | case tok::kw_asm: { |
John McCall | 7f040a9 | 2010-12-24 02:08:15 +0000 | [diff] [blame] | 568 | ProhibitAttributes(attrs); |
Sean Hunt | bbd37c6 | 2009-11-21 08:43:09 +0000 | [diff] [blame] | 569 | |
Abramo Bagnara | 21e006e | 2011-03-03 14:20:18 +0000 | [diff] [blame] | 570 | SourceLocation StartLoc = Tok.getLocation(); |
| 571 | SourceLocation EndLoc; |
| 572 | ExprResult Result(ParseSimpleAsm(&EndLoc)); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 573 | |
Anders Carlsson | 3f9424f | 2008-02-08 00:23:11 +0000 | [diff] [blame] | 574 | ExpectAndConsume(tok::semi, diag::err_expected_semi_after, |
| 575 | "top-level asm block"); |
Anders Carlsson | dfab6cb | 2008-02-08 00:33:21 +0000 | [diff] [blame] | 576 | |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 577 | if (Result.isInvalid()) |
| 578 | return DeclGroupPtrTy(); |
Abramo Bagnara | 21e006e | 2011-03-03 14:20:18 +0000 | [diff] [blame] | 579 | SingleDecl = Actions.ActOnFileScopeAsmDecl(Result.get(), StartLoc, EndLoc); |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 580 | break; |
Anders Carlsson | dfab6cb | 2008-02-08 00:33:21 +0000 | [diff] [blame] | 581 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 582 | case tok::at: |
Fariborz Jahanian | 95ed778 | 2011-08-27 20:50:59 +0000 | [diff] [blame] | 583 | return ParseObjCAtDirectives(); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 584 | case tok::minus: |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 585 | case tok::plus: |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 586 | if (!getLang().ObjC1) { |
| 587 | Diag(Tok, diag::err_expected_external_declaration); |
| 588 | ConsumeToken(); |
| 589 | return DeclGroupPtrTy(); |
| 590 | } |
| 591 | SingleDecl = ParseObjCMethodDefinition(); |
| 592 | break; |
Douglas Gregor | 791215b | 2009-09-21 20:51:25 +0000 | [diff] [blame] | 593 | case tok::code_completion: |
Douglas Gregor | 23c94db | 2010-07-02 17:43:08 +0000 | [diff] [blame] | 594 | Actions.CodeCompleteOrdinaryName(getCurScope(), |
John McCall | f312b1e | 2010-08-26 23:41:50 +0000 | [diff] [blame] | 595 | ObjCImpDecl? Sema::PCC_ObjCImplementation |
| 596 | : Sema::PCC_Namespace); |
Argyrios Kyrtzidis | 7d10087 | 2011-09-04 03:32:15 +0000 | [diff] [blame] | 597 | cutOffParsing(); |
| 598 | return DeclGroupPtrTy(); |
Douglas Gregor | f780abc | 2008-12-30 03:27:21 +0000 | [diff] [blame] | 599 | case tok::kw_using: |
Chris Lattner | 8f08cb7 | 2007-08-25 06:57:03 +0000 | [diff] [blame] | 600 | case tok::kw_namespace: |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 601 | case tok::kw_typedef: |
Douglas Gregor | adcac88 | 2008-12-01 23:54:00 +0000 | [diff] [blame] | 602 | case tok::kw_template: |
| 603 | case tok::kw_export: // As in 'export template' |
Anders Carlsson | 511d7ab | 2009-03-11 16:27:10 +0000 | [diff] [blame] | 604 | case tok::kw_static_assert: |
Peter Collingbourne | c6eb44b | 2011-04-15 00:35:57 +0000 | [diff] [blame] | 605 | case tok::kw__Static_assert: |
Chris Lattner | bae3511 | 2007-08-25 18:15:16 +0000 | [diff] [blame] | 606 | // A function definition cannot start with a these keywords. |
Chris Lattner | 97144fc | 2009-04-02 04:16:50 +0000 | [diff] [blame] | 607 | { |
| 608 | SourceLocation DeclEnd; |
Fariborz Jahanian | c5be7b0 | 2010-09-28 20:42:35 +0000 | [diff] [blame] | 609 | StmtVector Stmts(Actions); |
John McCall | 7f040a9 | 2010-12-24 02:08:15 +0000 | [diff] [blame] | 610 | return ParseDeclaration(Stmts, Declarator::FileContext, DeclEnd, attrs); |
Chris Lattner | 97144fc | 2009-04-02 04:16:50 +0000 | [diff] [blame] | 611 | } |
Sebastian Redl | d078e64 | 2010-08-27 23:12:46 +0000 | [diff] [blame] | 612 | |
Douglas Gregor | 7306ebf | 2010-12-01 20:32:20 +0000 | [diff] [blame] | 613 | case tok::kw_static: |
| 614 | // Parse (then ignore) 'static' prior to a template instantiation. This is |
| 615 | // a GCC extension that we intentionally do not support. |
| 616 | if (getLang().CPlusPlus && NextToken().is(tok::kw_template)) { |
| 617 | Diag(ConsumeToken(), diag::warn_static_inline_explicit_inst_ignored) |
| 618 | << 0; |
Sebastian Redl | d078e64 | 2010-08-27 23:12:46 +0000 | [diff] [blame] | 619 | SourceLocation DeclEnd; |
Fariborz Jahanian | c5be7b0 | 2010-09-28 20:42:35 +0000 | [diff] [blame] | 620 | StmtVector Stmts(Actions); |
John McCall | 7f040a9 | 2010-12-24 02:08:15 +0000 | [diff] [blame] | 621 | return ParseDeclaration(Stmts, Declarator::FileContext, DeclEnd, attrs); |
Douglas Gregor | 7306ebf | 2010-12-01 20:32:20 +0000 | [diff] [blame] | 622 | } |
| 623 | goto dont_know; |
| 624 | |
| 625 | case tok::kw_inline: |
| 626 | if (getLang().CPlusPlus) { |
| 627 | tok::TokenKind NextKind = NextToken().getKind(); |
| 628 | |
| 629 | // Inline namespaces. Allowed as an extension even in C++03. |
| 630 | if (NextKind == tok::kw_namespace) { |
| 631 | SourceLocation DeclEnd; |
| 632 | StmtVector Stmts(Actions); |
John McCall | 7f040a9 | 2010-12-24 02:08:15 +0000 | [diff] [blame] | 633 | return ParseDeclaration(Stmts, Declarator::FileContext, DeclEnd, attrs); |
Douglas Gregor | 7306ebf | 2010-12-01 20:32:20 +0000 | [diff] [blame] | 634 | } |
| 635 | |
| 636 | // Parse (then ignore) 'inline' prior to a template instantiation. This is |
| 637 | // a GCC extension that we intentionally do not support. |
| 638 | if (NextKind == tok::kw_template) { |
| 639 | Diag(ConsumeToken(), diag::warn_static_inline_explicit_inst_ignored) |
| 640 | << 1; |
| 641 | SourceLocation DeclEnd; |
| 642 | StmtVector Stmts(Actions); |
John McCall | 7f040a9 | 2010-12-24 02:08:15 +0000 | [diff] [blame] | 643 | return ParseDeclaration(Stmts, Declarator::FileContext, DeclEnd, attrs); |
Douglas Gregor | 7306ebf | 2010-12-01 20:32:20 +0000 | [diff] [blame] | 644 | } |
Sebastian Redl | d078e64 | 2010-08-27 23:12:46 +0000 | [diff] [blame] | 645 | } |
| 646 | goto dont_know; |
| 647 | |
Douglas Gregor | 45f9655 | 2009-09-04 06:33:52 +0000 | [diff] [blame] | 648 | case tok::kw_extern: |
| 649 | if (getLang().CPlusPlus && NextToken().is(tok::kw_template)) { |
| 650 | // Extern templates |
| 651 | SourceLocation ExternLoc = ConsumeToken(); |
| 652 | SourceLocation TemplateLoc = ConsumeToken(); |
Richard Smith | 9324583 | 2011-10-20 18:35:58 +0000 | [diff] [blame] | 653 | Diag(ExternLoc, getLang().CPlusPlus0x ? |
| 654 | diag::warn_cxx98_compat_extern_template : |
| 655 | diag::ext_extern_template) << SourceRange(ExternLoc, TemplateLoc); |
Douglas Gregor | 45f9655 | 2009-09-04 06:33:52 +0000 | [diff] [blame] | 656 | SourceLocation DeclEnd; |
| 657 | return Actions.ConvertDeclToDeclGroup( |
Argyrios Kyrtzidis | 9241057 | 2011-12-23 02:16:45 +0000 | [diff] [blame] | 658 | ParseExplicitInstantiation(Declarator::FileContext, |
| 659 | ExternLoc, TemplateLoc, DeclEnd)); |
Douglas Gregor | 45f9655 | 2009-09-04 06:33:52 +0000 | [diff] [blame] | 660 | } |
Douglas Gregor | 45f9655 | 2009-09-04 06:33:52 +0000 | [diff] [blame] | 661 | // FIXME: Detect C++ linkage specifications here? |
Sebastian Redl | d078e64 | 2010-08-27 23:12:46 +0000 | [diff] [blame] | 662 | goto dont_know; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 663 | |
Francois Pichet | f986038 | 2011-05-07 17:30:27 +0000 | [diff] [blame] | 664 | case tok::kw___if_exists: |
| 665 | case tok::kw___if_not_exists: |
Francois Pichet | 563a645 | 2011-05-25 10:19:49 +0000 | [diff] [blame] | 666 | ParseMicrosoftIfExistsExternalDeclaration(); |
Francois Pichet | f986038 | 2011-05-07 17:30:27 +0000 | [diff] [blame] | 667 | return DeclGroupPtrTy(); |
Douglas Gregor | 6aa52ec | 2011-08-26 23:56:07 +0000 | [diff] [blame] | 668 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 669 | default: |
Sebastian Redl | d078e64 | 2010-08-27 23:12:46 +0000 | [diff] [blame] | 670 | dont_know: |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 671 | // 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] | 672 | if (DS) { |
| 673 | DS->takeAttributesFrom(attrs); |
| 674 | return ParseDeclarationOrFunctionDefinition(*DS); |
| 675 | } else { |
| 676 | return ParseDeclarationOrFunctionDefinition(attrs); |
| 677 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 678 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 679 | |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 680 | // This routine returns a DeclGroup, if the thing we parsed only contains a |
| 681 | // single decl, convert it now. |
| 682 | return Actions.ConvertDeclToDeclGroup(SingleDecl); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 683 | } |
| 684 | |
Douglas Gregor | 1426e53 | 2009-05-12 21:31:51 +0000 | [diff] [blame] | 685 | /// \brief Determine whether the current token, if it occurs after a |
| 686 | /// declarator, continues a declaration or declaration list. |
Sean Hunt | e4246a6 | 2011-05-12 06:15:49 +0000 | [diff] [blame] | 687 | bool Parser::isDeclarationAfterDeclarator() { |
| 688 | // Check for '= delete' or '= default' |
| 689 | if (getLang().CPlusPlus && Tok.is(tok::equal)) { |
| 690 | const Token &KW = NextToken(); |
| 691 | if (KW.is(tok::kw_default) || KW.is(tok::kw_delete)) |
| 692 | return false; |
| 693 | } |
| 694 | |
Douglas Gregor | 1426e53 | 2009-05-12 21:31:51 +0000 | [diff] [blame] | 695 | return Tok.is(tok::equal) || // int X()= -> not a function def |
| 696 | Tok.is(tok::comma) || // int X(), -> not a function def |
| 697 | Tok.is(tok::semi) || // int X(); -> not a function def |
| 698 | Tok.is(tok::kw_asm) || // int X() __asm__ -> not a function def |
| 699 | Tok.is(tok::kw___attribute) || // int X() __attr__ -> not a function def |
| 700 | (getLang().CPlusPlus && |
| 701 | Tok.is(tok::l_paren)); // int X(0) -> not a function def [C++] |
| 702 | } |
| 703 | |
| 704 | /// \brief Determine whether the current token, if it occurs after a |
| 705 | /// declarator, indicates the start of a function definition. |
Chris Lattner | 004659a | 2010-07-11 22:42:07 +0000 | [diff] [blame] | 706 | bool Parser::isStartOfFunctionDefinition(const ParsingDeclarator &Declarator) { |
Abramo Bagnara | 075f8f1 | 2010-12-10 16:29:40 +0000 | [diff] [blame] | 707 | assert(Declarator.isFunctionDeclarator() && "Isn't a function declarator"); |
Chris Lattner | 5d1c619 | 2009-12-06 18:34:27 +0000 | [diff] [blame] | 708 | if (Tok.is(tok::l_brace)) // int X() {} |
| 709 | return true; |
| 710 | |
Chris Lattner | 004659a | 2010-07-11 22:42:07 +0000 | [diff] [blame] | 711 | // Handle K&R C argument lists: int X(f) int f; {} |
| 712 | if (!getLang().CPlusPlus && |
Abramo Bagnara | 075f8f1 | 2010-12-10 16:29:40 +0000 | [diff] [blame] | 713 | Declarator.getFunctionTypeInfo().isKNRPrototype()) |
Chris Lattner | 004659a | 2010-07-11 22:42:07 +0000 | [diff] [blame] | 714 | return isDeclarationSpecifier(); |
Sean Hunt | e4246a6 | 2011-05-12 06:15:49 +0000 | [diff] [blame] | 715 | |
| 716 | if (getLang().CPlusPlus && Tok.is(tok::equal)) { |
| 717 | const Token &KW = NextToken(); |
| 718 | return KW.is(tok::kw_default) || KW.is(tok::kw_delete); |
| 719 | } |
Chris Lattner | 004659a | 2010-07-11 22:42:07 +0000 | [diff] [blame] | 720 | |
Chris Lattner | 5d1c619 | 2009-12-06 18:34:27 +0000 | [diff] [blame] | 721 | return Tok.is(tok::colon) || // X() : Base() {} (used for ctors) |
| 722 | Tok.is(tok::kw_try); // X() try { ... } |
Douglas Gregor | 1426e53 | 2009-05-12 21:31:51 +0000 | [diff] [blame] | 723 | } |
| 724 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 725 | /// ParseDeclarationOrFunctionDefinition - Parse either a function-definition or |
| 726 | /// 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] | 727 | /// compound-statement in function-definition. TemplateParams, if |
| 728 | /// non-NULL, provides the template parameters when we're parsing a |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 729 | /// C++ template-declaration. |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 730 | /// |
| 731 | /// function-definition: [C99 6.9.1] |
Chris Lattner | a798ebc | 2008-04-05 05:52:15 +0000 | [diff] [blame] | 732 | /// decl-specs declarator declaration-list[opt] compound-statement |
| 733 | /// [C90] function-definition: [C99 6.7.1] - implicit int result |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 734 | /// [C90] decl-specs[opt] declarator declaration-list[opt] compound-statement |
Chris Lattner | a798ebc | 2008-04-05 05:52:15 +0000 | [diff] [blame] | 735 | /// |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 736 | /// declaration: [C99 6.7] |
Chris Lattner | 697e15f | 2007-08-22 06:06:56 +0000 | [diff] [blame] | 737 | /// declaration-specifiers init-declarator-list[opt] ';' |
| 738 | /// [!C99] init-declarator-list ';' [TODO: warn in c99 mode] |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 739 | /// [OMP] threadprivate-directive [TODO] |
| 740 | /// |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 741 | Parser::DeclGroupPtrTy |
Fariborz Jahanian | 3acd9aa | 2009-12-09 21:39:38 +0000 | [diff] [blame] | 742 | Parser::ParseDeclarationOrFunctionDefinition(ParsingDeclSpec &DS, |
Sean Hunt | bbd37c6 | 2009-11-21 08:43:09 +0000 | [diff] [blame] | 743 | AccessSpecifier AS) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 744 | // Parse the common declaration-specifiers piece. |
Douglas Gregor | 0efc2c1 | 2010-01-13 17:31:36 +0000 | [diff] [blame] | 745 | ParseDeclarationSpecifiers(DS, ParsedTemplateInfo(), AS, DSC_top_level); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 746 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 747 | // C99 6.7.2.3p6: Handle "struct-or-union identifier;", "enum { X };" |
| 748 | // declaration-specifiers init-declarator-list[opt] ';' |
Chris Lattner | 0007322 | 2007-10-09 17:23:58 +0000 | [diff] [blame] | 749 | if (Tok.is(tok::semi)) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 750 | ConsumeToken(); |
John McCall | d226f65 | 2010-08-21 09:40:31 +0000 | [diff] [blame] | 751 | Decl *TheDecl = Actions.ParsedFreeStandingDeclSpec(getCurScope(), AS, DS); |
John McCall | 54abf7d | 2009-11-04 02:18:39 +0000 | [diff] [blame] | 752 | DS.complete(TheDecl); |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 753 | return Actions.ConvertDeclToDeclGroup(TheDecl); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 754 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 755 | |
Daniel Dunbar | 246e70f | 2008-09-26 04:48:09 +0000 | [diff] [blame] | 756 | // ObjC2 allows prefix attributes on class interfaces and protocols. |
| 757 | // FIXME: This still needs better diagnostics. We should only accept |
| 758 | // attributes here, no types, etc. |
Chris Lattner | 0007322 | 2007-10-09 17:23:58 +0000 | [diff] [blame] | 759 | if (getLang().ObjC2 && Tok.is(tok::at)) { |
Steve Naroff | dac269b | 2007-08-20 21:31:48 +0000 | [diff] [blame] | 760 | SourceLocation AtLoc = ConsumeToken(); // the "@" |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 761 | if (!Tok.isObjCAtKeyword(tok::objc_interface) && |
Daniel Dunbar | 246e70f | 2008-09-26 04:48:09 +0000 | [diff] [blame] | 762 | !Tok.isObjCAtKeyword(tok::objc_protocol)) { |
| 763 | Diag(Tok, diag::err_objc_unexpected_attr); |
Chris Lattner | cb53b36 | 2007-12-27 19:57:00 +0000 | [diff] [blame] | 764 | SkipUntil(tok::semi); // FIXME: better skip? |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 765 | return DeclGroupPtrTy(); |
Chris Lattner | cb53b36 | 2007-12-27 19:57:00 +0000 | [diff] [blame] | 766 | } |
John McCall | d8ac057 | 2009-11-03 19:26:08 +0000 | [diff] [blame] | 767 | |
John McCall | 54abf7d | 2009-11-04 02:18:39 +0000 | [diff] [blame] | 768 | DS.abort(); |
| 769 | |
Fariborz Jahanian | 0de2ae2 | 2008-01-02 19:17:38 +0000 | [diff] [blame] | 770 | const char *PrevSpec = 0; |
John McCall | fec5401 | 2009-08-03 20:12:06 +0000 | [diff] [blame] | 771 | unsigned DiagID; |
| 772 | if (DS.SetTypeSpecType(DeclSpec::TST_unspecified, AtLoc, PrevSpec, DiagID)) |
| 773 | Diag(AtLoc, DiagID) << PrevSpec; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 774 | |
Daniel Dunbar | 246e70f | 2008-09-26 04:48:09 +0000 | [diff] [blame] | 775 | if (Tok.isObjCAtKeyword(tok::objc_protocol)) |
Douglas Gregor | bd9482d | 2012-01-01 21:23:57 +0000 | [diff] [blame] | 776 | return ParseObjCAtProtocolDeclaration(AtLoc, DS.getAttributes()); |
| 777 | |
| 778 | return Actions.ConvertDeclToDeclGroup( |
| 779 | ParseObjCAtInterfaceDeclaration(AtLoc, DS.getAttributes())); |
Steve Naroff | dac269b | 2007-08-20 21:31:48 +0000 | [diff] [blame] | 780 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 781 | |
Chris Lattner | c6fdc34 | 2008-01-12 07:05:38 +0000 | [diff] [blame] | 782 | // If the declspec consisted only of 'extern' and we have a string |
| 783 | // literal following it, this must be a C++ linkage specifier like |
| 784 | // 'extern "C"'. |
Chris Lattner | 3c6f6a7 | 2008-01-12 07:08:43 +0000 | [diff] [blame] | 785 | if (Tok.is(tok::string_literal) && getLang().CPlusPlus && |
Chris Lattner | c6fdc34 | 2008-01-12 07:05:38 +0000 | [diff] [blame] | 786 | DS.getStorageClassSpec() == DeclSpec::SCS_extern && |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 787 | DS.getParsedSpecifiers() == DeclSpec::PQ_StorageClassSpecifier) { |
John McCall | d226f65 | 2010-08-21 09:40:31 +0000 | [diff] [blame] | 788 | Decl *TheDecl = ParseLinkage(DS, Declarator::FileContext); |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 789 | return Actions.ConvertDeclToDeclGroup(TheDecl); |
| 790 | } |
Chris Lattner | c6fdc34 | 2008-01-12 07:05:38 +0000 | [diff] [blame] | 791 | |
John McCall | d8ac057 | 2009-11-03 19:26:08 +0000 | [diff] [blame] | 792 | return ParseDeclGroup(DS, Declarator::FileContext, true); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 793 | } |
| 794 | |
Fariborz Jahanian | 3acd9aa | 2009-12-09 21:39:38 +0000 | [diff] [blame] | 795 | Parser::DeclGroupPtrTy |
John McCall | 7f040a9 | 2010-12-24 02:08:15 +0000 | [diff] [blame] | 796 | Parser::ParseDeclarationOrFunctionDefinition(ParsedAttributes &attrs, |
Fariborz Jahanian | 3acd9aa | 2009-12-09 21:39:38 +0000 | [diff] [blame] | 797 | AccessSpecifier AS) { |
| 798 | ParsingDeclSpec DS(*this); |
John McCall | 7f040a9 | 2010-12-24 02:08:15 +0000 | [diff] [blame] | 799 | DS.takeAttributesFrom(attrs); |
Fariborz Jahanian | 9735c5e | 2011-08-22 17:59:19 +0000 | [diff] [blame] | 800 | // Must temporarily exit the objective-c container scope for |
| 801 | // parsing c constructs and re-enter objc container scope |
| 802 | // afterwards. |
| 803 | ObjCDeclContextSwitch ObjCDC(*this); |
| 804 | |
| 805 | return ParseDeclarationOrFunctionDefinition(DS, AS); |
Fariborz Jahanian | 3acd9aa | 2009-12-09 21:39:38 +0000 | [diff] [blame] | 806 | } |
| 807 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 808 | /// ParseFunctionDefinition - We parsed and verified that the specified |
| 809 | /// Declarator is well formed. If this is a K&R-style function, read the |
| 810 | /// parameters declaration-list, then start the compound-statement. |
| 811 | /// |
Chris Lattner | a798ebc | 2008-04-05 05:52:15 +0000 | [diff] [blame] | 812 | /// function-definition: [C99 6.9.1] |
| 813 | /// decl-specs declarator declaration-list[opt] compound-statement |
| 814 | /// [C90] function-definition: [C99 6.7.1] - implicit int result |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 815 | /// [C90] decl-specs[opt] declarator declaration-list[opt] compound-statement |
Douglas Gregor | 7ad8390 | 2008-11-05 04:29:56 +0000 | [diff] [blame] | 816 | /// [C++] function-definition: [C++ 8.4] |
Chris Lattner | 23c4b18 | 2009-03-29 17:18:04 +0000 | [diff] [blame] | 817 | /// decl-specifier-seq[opt] declarator ctor-initializer[opt] |
| 818 | /// function-body |
Douglas Gregor | 7ad8390 | 2008-11-05 04:29:56 +0000 | [diff] [blame] | 819 | /// [C++] function-definition: [C++ 8.4] |
Sebastian Redl | d3a413d | 2009-04-26 20:35:05 +0000 | [diff] [blame] | 820 | /// decl-specifier-seq[opt] declarator function-try-block |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 821 | /// |
John McCall | d226f65 | 2010-08-21 09:40:31 +0000 | [diff] [blame] | 822 | Decl *Parser::ParseFunctionDefinition(ParsingDeclarator &D, |
Abramo Bagnara | 075f8f1 | 2010-12-10 16:29:40 +0000 | [diff] [blame] | 823 | const ParsedTemplateInfo &TemplateInfo) { |
John Wiegley | 28bbe4b | 2011-04-28 01:08:34 +0000 | [diff] [blame] | 824 | // Poison the SEH identifiers so they are flagged as illegal in function bodies |
| 825 | PoisonSEHIdentifiersRAIIObject PoisonSEHIdentifiers(*this, true); |
Abramo Bagnara | 075f8f1 | 2010-12-10 16:29:40 +0000 | [diff] [blame] | 826 | const DeclaratorChunk::FunctionTypeInfo &FTI = D.getFunctionTypeInfo(); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 827 | |
Chris Lattner | a798ebc | 2008-04-05 05:52:15 +0000 | [diff] [blame] | 828 | // If this is C90 and the declspecs were completely missing, fudge in an |
| 829 | // implicit int. We do this here because this is the only place where |
| 830 | // declaration-specifiers are completely optional in the grammar. |
Chris Lattner | 2a327d1 | 2009-02-27 18:35:46 +0000 | [diff] [blame] | 831 | if (getLang().ImplicitInt && D.getDeclSpec().isEmpty()) { |
Chris Lattner | a798ebc | 2008-04-05 05:52:15 +0000 | [diff] [blame] | 832 | const char *PrevSpec; |
John McCall | fec5401 | 2009-08-03 20:12:06 +0000 | [diff] [blame] | 833 | unsigned DiagID; |
Chris Lattner | 31c2868 | 2008-10-20 02:01:34 +0000 | [diff] [blame] | 834 | D.getMutableDeclSpec().SetTypeSpecType(DeclSpec::TST_int, |
| 835 | D.getIdentifierLoc(), |
John McCall | fec5401 | 2009-08-03 20:12:06 +0000 | [diff] [blame] | 836 | PrevSpec, DiagID); |
Sebastian Redl | ab197ba | 2009-02-09 18:23:29 +0000 | [diff] [blame] | 837 | D.SetRangeBegin(D.getDeclSpec().getSourceRange().getBegin()); |
Chris Lattner | a798ebc | 2008-04-05 05:52:15 +0000 | [diff] [blame] | 838 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 839 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 840 | // If this declaration was formed with a K&R-style identifier list for the |
| 841 | // arguments, parse declarations for all of the args next. |
| 842 | // int foo(a,b) int a; float b; {} |
Chris Lattner | 004659a | 2010-07-11 22:42:07 +0000 | [diff] [blame] | 843 | if (FTI.isKNRPrototype()) |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 844 | ParseKNRParamDeclarations(D); |
| 845 | |
Sean Hunt | e4246a6 | 2011-05-12 06:15:49 +0000 | [diff] [blame] | 846 | |
Douglas Gregor | 7ad8390 | 2008-11-05 04:29:56 +0000 | [diff] [blame] | 847 | // We should have either an opening brace or, in a C++ constructor, |
| 848 | // we may have a colon. |
Douglas Gregor | 758afbc | 2011-02-04 11:57:16 +0000 | [diff] [blame] | 849 | if (Tok.isNot(tok::l_brace) && |
| 850 | (!getLang().CPlusPlus || |
Sean Hunt | cd10dec | 2011-05-23 23:14:04 +0000 | [diff] [blame] | 851 | (Tok.isNot(tok::colon) && Tok.isNot(tok::kw_try) && |
| 852 | Tok.isNot(tok::equal)))) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 853 | Diag(Tok, diag::err_expected_fn_body); |
| 854 | |
| 855 | // Skip over garbage, until we get to '{'. Don't eat the '{'. |
| 856 | SkipUntil(tok::l_brace, true, true); |
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 | // If we didn't find the '{', bail out. |
Chris Lattner | 0007322 | 2007-10-09 17:23:58 +0000 | [diff] [blame] | 859 | if (Tok.isNot(tok::l_brace)) |
John McCall | d226f65 | 2010-08-21 09:40:31 +0000 | [diff] [blame] | 860 | return 0; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 861 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 862 | |
Francois Pichet | 8387e2a | 2011-04-22 22:18:13 +0000 | [diff] [blame] | 863 | // In delayed template parsing mode, for function template we consume the |
| 864 | // tokens and store them for late parsing at the end of the translation unit. |
| 865 | if (getLang().DelayedTemplateParsing && |
| 866 | TemplateInfo.Kind == ParsedTemplateInfo::Template) { |
| 867 | MultiTemplateParamsArg TemplateParameterLists(Actions, |
| 868 | TemplateInfo.TemplateParams->data(), |
| 869 | TemplateInfo.TemplateParams->size()); |
| 870 | |
| 871 | ParseScope BodyScope(this, Scope::FnScope|Scope::DeclScope); |
| 872 | Scope *ParentScope = getCurScope()->getParent(); |
| 873 | |
Douglas Gregor | 45fa560 | 2011-11-07 20:56:01 +0000 | [diff] [blame] | 874 | D.setFunctionDefinitionKind(FDK_Definition); |
Francois Pichet | 8387e2a | 2011-04-22 22:18:13 +0000 | [diff] [blame] | 875 | Decl *DP = Actions.HandleDeclarator(ParentScope, D, |
Kaelyn Uhrain | 2c712f5 | 2011-10-11 00:28:45 +0000 | [diff] [blame] | 876 | move(TemplateParameterLists)); |
Francois Pichet | 8387e2a | 2011-04-22 22:18:13 +0000 | [diff] [blame] | 877 | D.complete(DP); |
| 878 | D.getMutableDeclSpec().abort(); |
| 879 | |
| 880 | if (DP) { |
Francois Pichet | e1fca50 | 2011-12-08 09:11:52 +0000 | [diff] [blame] | 881 | LateParsedTemplatedFunction *LPT = new LateParsedTemplatedFunction(DP); |
Francois Pichet | 8387e2a | 2011-04-22 22:18:13 +0000 | [diff] [blame] | 882 | |
| 883 | FunctionDecl *FnD = 0; |
| 884 | if (FunctionTemplateDecl *FunTmpl = dyn_cast<FunctionTemplateDecl>(DP)) |
| 885 | FnD = FunTmpl->getTemplatedDecl(); |
| 886 | else |
| 887 | FnD = cast<FunctionDecl>(DP); |
Francois Pichet | d4a0caf | 2011-04-22 23:20:44 +0000 | [diff] [blame] | 888 | Actions.CheckForFunctionRedefinition(FnD); |
Francois Pichet | 8387e2a | 2011-04-22 22:18:13 +0000 | [diff] [blame] | 889 | |
| 890 | LateParsedTemplateMap[FnD] = LPT; |
| 891 | Actions.MarkAsLateParsedTemplate(FnD); |
| 892 | LexTemplateFunctionForLateParsing(LPT->Toks); |
| 893 | } else { |
| 894 | CachedTokens Toks; |
| 895 | LexTemplateFunctionForLateParsing(Toks); |
| 896 | } |
| 897 | return DP; |
| 898 | } |
| 899 | |
Chris Lattner | b652cea | 2007-10-09 17:14:05 +0000 | [diff] [blame] | 900 | // Enter a scope for the function body. |
Douglas Gregor | 8935b8b | 2008-12-10 06:34:36 +0000 | [diff] [blame] | 901 | ParseScope BodyScope(this, Scope::FnScope|Scope::DeclScope); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 902 | |
Chris Lattner | b652cea | 2007-10-09 17:14:05 +0000 | [diff] [blame] | 903 | // Tell the actions module that we have entered a function definition with the |
| 904 | // specified Declarator for the function. |
John McCall | d226f65 | 2010-08-21 09:40:31 +0000 | [diff] [blame] | 905 | Decl *Res = TemplateInfo.TemplateParams? |
Douglas Gregor | 23c94db | 2010-07-02 17:43:08 +0000 | [diff] [blame] | 906 | Actions.ActOnStartOfFunctionTemplateDef(getCurScope(), |
John McCall | f312b1e | 2010-08-26 23:41:50 +0000 | [diff] [blame] | 907 | MultiTemplateParamsArg(Actions, |
Douglas Gregor | 52591bf | 2009-06-24 00:54:41 +0000 | [diff] [blame] | 908 | TemplateInfo.TemplateParams->data(), |
| 909 | TemplateInfo.TemplateParams->size()), |
| 910 | D) |
Douglas Gregor | 23c94db | 2010-07-02 17:43:08 +0000 | [diff] [blame] | 911 | : Actions.ActOnStartOfFunctionDef(getCurScope(), D); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 912 | |
John McCall | 54abf7d | 2009-11-04 02:18:39 +0000 | [diff] [blame] | 913 | // Break out of the ParsingDeclarator context before we parse the body. |
| 914 | D.complete(Res); |
| 915 | |
| 916 | // Break out of the ParsingDeclSpec context, too. This const_cast is |
| 917 | // safe because we're always the sole owner. |
| 918 | D.getMutableDeclSpec().abort(); |
| 919 | |
Sean Hunt | cd10dec | 2011-05-23 23:14:04 +0000 | [diff] [blame] | 920 | if (Tok.is(tok::equal)) { |
| 921 | assert(getLang().CPlusPlus && "Only C++ function definitions have '='"); |
| 922 | ConsumeToken(); |
| 923 | |
| 924 | Actions.ActOnFinishFunctionBody(Res, 0, false); |
| 925 | |
| 926 | bool Delete = false; |
| 927 | SourceLocation KWLoc; |
| 928 | if (Tok.is(tok::kw_delete)) { |
Richard Smith | 7fe6208 | 2011-10-15 05:09:34 +0000 | [diff] [blame] | 929 | Diag(Tok, getLang().CPlusPlus0x ? |
| 930 | diag::warn_cxx98_compat_deleted_function : |
Richard Smith | d7c56e1 | 2011-12-29 21:57:33 +0000 | [diff] [blame] | 931 | diag::ext_deleted_function); |
Sean Hunt | cd10dec | 2011-05-23 23:14:04 +0000 | [diff] [blame] | 932 | |
| 933 | KWLoc = ConsumeToken(); |
| 934 | Actions.SetDeclDeleted(Res, KWLoc); |
| 935 | Delete = true; |
| 936 | } else if (Tok.is(tok::kw_default)) { |
Richard Smith | 7fe6208 | 2011-10-15 05:09:34 +0000 | [diff] [blame] | 937 | Diag(Tok, getLang().CPlusPlus0x ? |
| 938 | diag::warn_cxx98_compat_defaulted_function : |
Richard Smith | d7c56e1 | 2011-12-29 21:57:33 +0000 | [diff] [blame] | 939 | diag::ext_defaulted_function); |
Sean Hunt | cd10dec | 2011-05-23 23:14:04 +0000 | [diff] [blame] | 940 | |
| 941 | KWLoc = ConsumeToken(); |
| 942 | Actions.SetDeclDefaulted(Res, KWLoc); |
| 943 | } else { |
| 944 | llvm_unreachable("function definition after = not 'delete' or 'default'"); |
| 945 | } |
| 946 | |
| 947 | if (Tok.is(tok::comma)) { |
| 948 | Diag(KWLoc, diag::err_default_delete_in_multiple_declaration) |
| 949 | << Delete; |
| 950 | SkipUntil(tok::semi); |
| 951 | } else { |
| 952 | ExpectAndConsume(tok::semi, diag::err_expected_semi_after, |
| 953 | Delete ? "delete" : "default", tok::semi); |
| 954 | } |
| 955 | |
| 956 | return Res; |
| 957 | } |
| 958 | |
Sebastian Redl | d3a413d | 2009-04-26 20:35:05 +0000 | [diff] [blame] | 959 | if (Tok.is(tok::kw_try)) |
Douglas Gregor | c9977d0 | 2011-03-16 17:05:57 +0000 | [diff] [blame] | 960 | return ParseFunctionTryBlock(Res, BodyScope); |
Sebastian Redl | d3a413d | 2009-04-26 20:35:05 +0000 | [diff] [blame] | 961 | |
Douglas Gregor | 7ad8390 | 2008-11-05 04:29:56 +0000 | [diff] [blame] | 962 | // If we have a colon, then we're probably parsing a C++ |
| 963 | // ctor-initializer. |
John McCall | d6ca8da | 2010-04-10 07:37:23 +0000 | [diff] [blame] | 964 | if (Tok.is(tok::colon)) { |
Douglas Gregor | 7ad8390 | 2008-11-05 04:29:56 +0000 | [diff] [blame] | 965 | ParseConstructorInitializer(Res); |
John McCall | d6ca8da | 2010-04-10 07:37:23 +0000 | [diff] [blame] | 966 | |
| 967 | // Recover from error. |
| 968 | if (!Tok.is(tok::l_brace)) { |
Douglas Gregor | c9977d0 | 2011-03-16 17:05:57 +0000 | [diff] [blame] | 969 | BodyScope.Exit(); |
John McCall | 9ae2f07 | 2010-08-23 23:25:46 +0000 | [diff] [blame] | 970 | Actions.ActOnFinishFunctionBody(Res, 0); |
John McCall | d6ca8da | 2010-04-10 07:37:23 +0000 | [diff] [blame] | 971 | return Res; |
| 972 | } |
| 973 | } else |
Fariborz Jahanian | 393612e | 2009-07-21 22:36:06 +0000 | [diff] [blame] | 974 | Actions.ActOnDefaultCtorInitializers(Res); |
Douglas Gregor | 7ad8390 | 2008-11-05 04:29:56 +0000 | [diff] [blame] | 975 | |
Douglas Gregor | c9977d0 | 2011-03-16 17:05:57 +0000 | [diff] [blame] | 976 | return ParseFunctionStatementBody(Res, BodyScope); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 977 | } |
| 978 | |
| 979 | /// ParseKNRParamDeclarations - Parse 'declaration-list[opt]' which provides |
| 980 | /// types for a function with a K&R-style identifier list for arguments. |
| 981 | void Parser::ParseKNRParamDeclarations(Declarator &D) { |
| 982 | // We know that the top-level of this declarator is a function. |
Abramo Bagnara | 075f8f1 | 2010-12-10 16:29:40 +0000 | [diff] [blame] | 983 | DeclaratorChunk::FunctionTypeInfo &FTI = D.getFunctionTypeInfo(); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 984 | |
Chris Lattner | 0442108 | 2008-04-08 04:40:51 +0000 | [diff] [blame] | 985 | // Enter function-declaration scope, limiting any declarators to the |
| 986 | // function prototype scope, including parameter declarators. |
Douglas Gregor | 3218c4b | 2009-01-09 22:42:13 +0000 | [diff] [blame] | 987 | ParseScope PrototypeScope(this, Scope::FunctionPrototypeScope|Scope::DeclScope); |
Chris Lattner | 0442108 | 2008-04-08 04:40:51 +0000 | [diff] [blame] | 988 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 989 | // Read all the argument declarations. |
| 990 | while (isDeclarationSpecifier()) { |
| 991 | SourceLocation DSStart = Tok.getLocation(); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 992 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 993 | // Parse the common declaration-specifiers piece. |
John McCall | 0b7e678 | 2011-03-24 11:26:52 +0000 | [diff] [blame] | 994 | DeclSpec DS(AttrFactory); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 995 | ParseDeclarationSpecifiers(DS); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 996 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 997 | // C99 6.9.1p6: 'each declaration in the declaration list shall have at |
| 998 | // least one declarator'. |
| 999 | // NOTE: GCC just makes this an ext-warn. It's not clear what it does with |
| 1000 | // the declarations though. It's trivial to ignore them, really hard to do |
| 1001 | // anything else with them. |
Chris Lattner | 0007322 | 2007-10-09 17:23:58 +0000 | [diff] [blame] | 1002 | if (Tok.is(tok::semi)) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1003 | Diag(DSStart, diag::err_declaration_does_not_declare_param); |
| 1004 | ConsumeToken(); |
| 1005 | continue; |
| 1006 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 1007 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1008 | // C99 6.9.1p6: Declarations shall contain no storage-class specifiers other |
| 1009 | // than register. |
| 1010 | if (DS.getStorageClassSpec() != DeclSpec::SCS_unspecified && |
| 1011 | DS.getStorageClassSpec() != DeclSpec::SCS_register) { |
| 1012 | Diag(DS.getStorageClassSpecLoc(), |
| 1013 | diag::err_invalid_storage_class_in_func_decl); |
| 1014 | DS.ClearStorageClassSpecs(); |
| 1015 | } |
| 1016 | if (DS.isThreadSpecified()) { |
| 1017 | Diag(DS.getThreadSpecLoc(), |
| 1018 | diag::err_invalid_storage_class_in_func_decl); |
| 1019 | DS.ClearStorageClassSpecs(); |
| 1020 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 1021 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1022 | // Parse the first declarator attached to this declspec. |
| 1023 | Declarator ParmDeclarator(DS, Declarator::KNRTypeListContext); |
| 1024 | ParseDeclarator(ParmDeclarator); |
| 1025 | |
| 1026 | // Handle the full declarator list. |
| 1027 | while (1) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1028 | // If attributes are present, parse them. |
John McCall | 7f040a9 | 2010-12-24 02:08:15 +0000 | [diff] [blame] | 1029 | MaybeParseGNUAttributes(ParmDeclarator); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 1030 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1031 | // Ask the actions module to compute the type for this declarator. |
John McCall | d226f65 | 2010-08-21 09:40:31 +0000 | [diff] [blame] | 1032 | Decl *Param = |
Douglas Gregor | 23c94db | 2010-07-02 17:43:08 +0000 | [diff] [blame] | 1033 | Actions.ActOnParamDeclarator(getCurScope(), ParmDeclarator); |
Steve Naroff | 2bd42fa | 2007-09-10 20:51:04 +0000 | [diff] [blame] | 1034 | |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 1035 | if (Param && |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1036 | // A missing identifier has already been diagnosed. |
| 1037 | ParmDeclarator.getIdentifier()) { |
| 1038 | |
| 1039 | // Scan the argument list looking for the correct param to apply this |
| 1040 | // type. |
| 1041 | for (unsigned i = 0; ; ++i) { |
| 1042 | // C99 6.9.1p6: those declarators shall declare only identifiers from |
| 1043 | // the identifier list. |
| 1044 | if (i == FTI.NumArgs) { |
Chris Lattner | 1ab3b96 | 2008-11-18 07:48:38 +0000 | [diff] [blame] | 1045 | Diag(ParmDeclarator.getIdentifierLoc(), diag::err_no_matching_param) |
Chris Lattner | 6898e33 | 2008-11-19 07:51:13 +0000 | [diff] [blame] | 1046 | << ParmDeclarator.getIdentifier(); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1047 | break; |
| 1048 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 1049 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1050 | if (FTI.ArgInfo[i].Ident == ParmDeclarator.getIdentifier()) { |
| 1051 | // Reject redefinitions of parameters. |
Chris Lattner | 0442108 | 2008-04-08 04:40:51 +0000 | [diff] [blame] | 1052 | if (FTI.ArgInfo[i].Param) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1053 | Diag(ParmDeclarator.getIdentifierLoc(), |
Chris Lattner | 1ab3b96 | 2008-11-18 07:48:38 +0000 | [diff] [blame] | 1054 | diag::err_param_redefinition) |
Chris Lattner | 6898e33 | 2008-11-19 07:51:13 +0000 | [diff] [blame] | 1055 | << ParmDeclarator.getIdentifier(); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1056 | } else { |
Chris Lattner | 0442108 | 2008-04-08 04:40:51 +0000 | [diff] [blame] | 1057 | FTI.ArgInfo[i].Param = Param; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1058 | } |
| 1059 | break; |
| 1060 | } |
| 1061 | } |
| 1062 | } |
| 1063 | |
| 1064 | // If we don't have a comma, it is either the end of the list (a ';') or |
| 1065 | // an error, bail out. |
Chris Lattner | 0007322 | 2007-10-09 17:23:58 +0000 | [diff] [blame] | 1066 | if (Tok.isNot(tok::comma)) |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1067 | break; |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 1068 | |
Richard Smith | 7984de3 | 2012-01-12 23:53:29 +0000 | [diff] [blame] | 1069 | ParmDeclarator.clear(); |
| 1070 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1071 | // Consume the comma. |
Richard Smith | 7984de3 | 2012-01-12 23:53:29 +0000 | [diff] [blame] | 1072 | ParmDeclarator.setCommaLoc(ConsumeToken()); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 1073 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1074 | // Parse the next declarator. |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1075 | ParseDeclarator(ParmDeclarator); |
| 1076 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 1077 | |
Chris Lattner | 0007322 | 2007-10-09 17:23:58 +0000 | [diff] [blame] | 1078 | if (Tok.is(tok::semi)) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1079 | ConsumeToken(); |
| 1080 | } else { |
| 1081 | Diag(Tok, diag::err_parse_error); |
| 1082 | // Skip to end of block or statement |
| 1083 | SkipUntil(tok::semi, true); |
Chris Lattner | 0007322 | 2007-10-09 17:23:58 +0000 | [diff] [blame] | 1084 | if (Tok.is(tok::semi)) |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1085 | ConsumeToken(); |
| 1086 | } |
| 1087 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 1088 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1089 | // The actions module must verify that all arguments were declared. |
Douglas Gregor | 23c94db | 2010-07-02 17:43:08 +0000 | [diff] [blame] | 1090 | Actions.ActOnFinishKNRParamDeclarations(getCurScope(), D, Tok.getLocation()); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1091 | } |
| 1092 | |
| 1093 | |
| 1094 | /// ParseAsmStringLiteral - This is just a normal string-literal, but is not |
| 1095 | /// allowed to be a wide string, and is not subject to character translation. |
| 1096 | /// |
| 1097 | /// [GNU] asm-string-literal: |
| 1098 | /// string-literal |
| 1099 | /// |
John McCall | 60d7b3a | 2010-08-24 06:29:42 +0000 | [diff] [blame] | 1100 | Parser::ExprResult Parser::ParseAsmStringLiteral() { |
Ted Kremenek | 7f42228 | 2011-12-02 00:35:46 +0000 | [diff] [blame] | 1101 | switch (Tok.getKind()) { |
| 1102 | case tok::string_literal: |
| 1103 | break; |
| 1104 | case tok::wide_string_literal: { |
| 1105 | SourceLocation L = Tok.getLocation(); |
| 1106 | Diag(Tok, diag::err_asm_operand_wide_string_literal) |
| 1107 | << SourceRange(L, L); |
| 1108 | return ExprError(); |
| 1109 | } |
| 1110 | default: |
| 1111 | Diag(Tok, diag::err_expected_string_literal); |
| 1112 | return ExprError(); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1113 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 1114 | |
John McCall | 60d7b3a | 2010-08-24 06:29:42 +0000 | [diff] [blame] | 1115 | ExprResult Res(ParseStringLiteralExpression()); |
Sebastian Redl | effa8d1 | 2008-12-10 00:02:53 +0000 | [diff] [blame] | 1116 | if (Res.isInvalid()) return move(Res); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 1117 | |
Sebastian Redl | effa8d1 | 2008-12-10 00:02:53 +0000 | [diff] [blame] | 1118 | return move(Res); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1119 | } |
| 1120 | |
| 1121 | /// ParseSimpleAsm |
| 1122 | /// |
| 1123 | /// [GNU] simple-asm-expr: |
| 1124 | /// 'asm' '(' asm-string-literal ')' |
| 1125 | /// |
John McCall | 60d7b3a | 2010-08-24 06:29:42 +0000 | [diff] [blame] | 1126 | Parser::ExprResult Parser::ParseSimpleAsm(SourceLocation *EndLoc) { |
Chris Lattner | 0007322 | 2007-10-09 17:23:58 +0000 | [diff] [blame] | 1127 | assert(Tok.is(tok::kw_asm) && "Not an asm!"); |
Anders Carlsson | dfab6cb | 2008-02-08 00:33:21 +0000 | [diff] [blame] | 1128 | SourceLocation Loc = ConsumeToken(); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 1129 | |
John McCall | 7a6ae74 | 2010-01-25 22:27:48 +0000 | [diff] [blame] | 1130 | if (Tok.is(tok::kw_volatile)) { |
John McCall | 841d5e6 | 2010-01-25 23:12:50 +0000 | [diff] [blame] | 1131 | // Remove from the end of 'asm' to the end of 'volatile'. |
| 1132 | SourceRange RemovalRange(PP.getLocForEndOfToken(Loc), |
| 1133 | PP.getLocForEndOfToken(Tok.getLocation())); |
| 1134 | |
| 1135 | Diag(Tok, diag::warn_file_asm_volatile) |
Douglas Gregor | 849b243 | 2010-03-31 17:46:05 +0000 | [diff] [blame] | 1136 | << FixItHint::CreateRemoval(RemovalRange); |
John McCall | 7a6ae74 | 2010-01-25 22:27:48 +0000 | [diff] [blame] | 1137 | ConsumeToken(); |
| 1138 | } |
| 1139 | |
Douglas Gregor | 4a8dfb5 | 2011-10-12 16:37:45 +0000 | [diff] [blame] | 1140 | BalancedDelimiterTracker T(*this, tok::l_paren); |
| 1141 | if (T.consumeOpen()) { |
Chris Lattner | 1ab3b96 | 2008-11-18 07:48:38 +0000 | [diff] [blame] | 1142 | Diag(Tok, diag::err_expected_lparen_after) << "asm"; |
Sebastian Redl | 61364dd | 2008-12-11 19:30:53 +0000 | [diff] [blame] | 1143 | return ExprError(); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1144 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 1145 | |
John McCall | 60d7b3a | 2010-08-24 06:29:42 +0000 | [diff] [blame] | 1146 | ExprResult Result(ParseAsmStringLiteral()); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 1147 | |
Sebastian Redl | ab197ba | 2009-02-09 18:23:29 +0000 | [diff] [blame] | 1148 | if (Result.isInvalid()) { |
| 1149 | SkipUntil(tok::r_paren, true, true); |
| 1150 | if (EndLoc) |
| 1151 | *EndLoc = Tok.getLocation(); |
| 1152 | ConsumeAnyToken(); |
| 1153 | } else { |
Douglas Gregor | 4a8dfb5 | 2011-10-12 16:37:45 +0000 | [diff] [blame] | 1154 | // Close the paren and get the location of the end bracket |
| 1155 | T.consumeClose(); |
Sebastian Redl | ab197ba | 2009-02-09 18:23:29 +0000 | [diff] [blame] | 1156 | if (EndLoc) |
Douglas Gregor | 4a8dfb5 | 2011-10-12 16:37:45 +0000 | [diff] [blame] | 1157 | *EndLoc = T.getCloseLocation(); |
Sebastian Redl | ab197ba | 2009-02-09 18:23:29 +0000 | [diff] [blame] | 1158 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 1159 | |
Sebastian Redl | effa8d1 | 2008-12-10 00:02:53 +0000 | [diff] [blame] | 1160 | return move(Result); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1161 | } |
| 1162 | |
Argyrios Kyrtzidis | 25a7676 | 2011-06-22 06:09:49 +0000 | [diff] [blame] | 1163 | /// \brief Get the TemplateIdAnnotation from the token and put it in the |
| 1164 | /// cleanup pool so that it gets destroyed when parsing the current top level |
| 1165 | /// declaration is finished. |
| 1166 | TemplateIdAnnotation *Parser::takeTemplateIdAnnotation(const Token &tok) { |
| 1167 | assert(tok.is(tok::annot_template_id) && "Expected template-id token"); |
| 1168 | TemplateIdAnnotation * |
| 1169 | Id = static_cast<TemplateIdAnnotation *>(tok.getAnnotationValue()); |
| 1170 | TopLevelDeclCleanupPool.delayMemberFunc< TemplateIdAnnotation, |
| 1171 | &TemplateIdAnnotation::Destroy>(Id); |
| 1172 | return Id; |
| 1173 | } |
| 1174 | |
Argyrios Kyrtzidis | eb83ecd | 2008-11-08 16:45:02 +0000 | [diff] [blame] | 1175 | /// TryAnnotateTypeOrScopeToken - If the current token position is on a |
| 1176 | /// typename (possibly qualified in C++) or a C++ scope specifier not followed |
| 1177 | /// by a typename, TryAnnotateTypeOrScopeToken will replace one or more tokens |
| 1178 | /// with a single annotation token representing the typename or C++ scope |
| 1179 | /// respectively. |
| 1180 | /// This simplifies handling of C++ scope specifiers and allows efficient |
| 1181 | /// backtracking without the need to re-parse and resolve nested-names and |
| 1182 | /// typenames. |
Argyrios Kyrtzidis | 44802cc | 2008-11-26 21:51:07 +0000 | [diff] [blame] | 1183 | /// It will mainly be called when we expect to treat identifiers as typenames |
| 1184 | /// (if they are typenames). For example, in C we do not expect identifiers |
| 1185 | /// inside expressions to be treated as typenames so it will not be called |
| 1186 | /// for expressions in C. |
| 1187 | /// 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] | 1188 | /// 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] | 1189 | /// will not be called twice, once to check whether we have a declaration |
| 1190 | /// specifier, and another one to get the actual type inside |
| 1191 | /// ParseDeclarationSpecifiers). |
Chris Lattner | a7bc7c8 | 2009-01-04 23:23:14 +0000 | [diff] [blame] | 1192 | /// |
John McCall | 9ba6166 | 2010-02-26 08:45:28 +0000 | [diff] [blame] | 1193 | /// This returns true if an error occurred. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1194 | /// |
Chris Lattner | 55a7cef | 2009-01-05 00:13:00 +0000 | [diff] [blame] | 1195 | /// Note that this routine emits an error if you call it with ::new or ::delete |
| 1196 | /// as the current tokens, so only call it in contexts where these are invalid. |
Kaelyn Uhrain | fac9467 | 2011-10-11 01:02:41 +0000 | [diff] [blame] | 1197 | bool Parser::TryAnnotateTypeOrScopeToken(bool EnteringContext, bool NeedType) { |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1198 | assert((Tok.is(tok::identifier) || Tok.is(tok::coloncolon) |
David Blaikie | 42d6d0c | 2011-12-04 05:04:18 +0000 | [diff] [blame] | 1199 | || Tok.is(tok::kw_typename) || Tok.is(tok::annot_cxxscope) |
| 1200 | || Tok.is(tok::kw_decltype)) && "Cannot be a type or scope token!"); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1201 | |
Douglas Gregor | d57959a | 2009-03-27 23:10:48 +0000 | [diff] [blame] | 1202 | if (Tok.is(tok::kw_typename)) { |
| 1203 | // Parse a C++ typename-specifier, e.g., "typename T::type". |
| 1204 | // |
| 1205 | // typename-specifier: |
| 1206 | // 'typename' '::' [opt] nested-name-specifier identifier |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1207 | // 'typename' '::' [opt] nested-name-specifier template [opt] |
Douglas Gregor | 1734317 | 2009-04-01 00:28:59 +0000 | [diff] [blame] | 1208 | // simple-template-id |
Douglas Gregor | d57959a | 2009-03-27 23:10:48 +0000 | [diff] [blame] | 1209 | SourceLocation TypenameLoc = ConsumeToken(); |
| 1210 | CXXScopeSpec SS; |
Douglas Gregor | efaa93a | 2011-11-07 17:33:42 +0000 | [diff] [blame] | 1211 | if (ParseOptionalCXXScopeSpecifier(SS, /*ObjectType=*/ParsedType(), |
| 1212 | /*EnteringContext=*/false, |
Francois Pichet | 4147d30 | 2011-03-27 19:41:34 +0000 | [diff] [blame] | 1213 | 0, /*IsTypename*/true)) |
John McCall | 9ba6166 | 2010-02-26 08:45:28 +0000 | [diff] [blame] | 1214 | return true; |
| 1215 | if (!SS.isSet()) { |
Francois Pichet | 62ec1f2 | 2011-09-17 17:15:52 +0000 | [diff] [blame] | 1216 | if (getLang().MicrosoftExt) |
Francois Pichet | a5d318a | 2011-04-24 11:24:13 +0000 | [diff] [blame] | 1217 | Diag(Tok.getLocation(), diag::warn_expected_qualified_after_typename); |
| 1218 | else |
| 1219 | Diag(Tok.getLocation(), diag::err_expected_qualified_after_typename); |
John McCall | 9ba6166 | 2010-02-26 08:45:28 +0000 | [diff] [blame] | 1220 | return true; |
Douglas Gregor | d57959a | 2009-03-27 23:10:48 +0000 | [diff] [blame] | 1221 | } |
| 1222 | |
| 1223 | TypeResult Ty; |
| 1224 | if (Tok.is(tok::identifier)) { |
| 1225 | // FIXME: check whether the next token is '<', first! |
Douglas Gregor | 23c94db | 2010-07-02 17:43:08 +0000 | [diff] [blame] | 1226 | Ty = Actions.ActOnTypenameType(getCurScope(), TypenameLoc, SS, |
Douglas Gregor | 1a15dae | 2010-06-16 22:31:08 +0000 | [diff] [blame] | 1227 | *Tok.getIdentifierInfo(), |
Douglas Gregor | d57959a | 2009-03-27 23:10:48 +0000 | [diff] [blame] | 1228 | Tok.getLocation()); |
Douglas Gregor | 1734317 | 2009-04-01 00:28:59 +0000 | [diff] [blame] | 1229 | } else if (Tok.is(tok::annot_template_id)) { |
Argyrios Kyrtzidis | 25a7676 | 2011-06-22 06:09:49 +0000 | [diff] [blame] | 1230 | TemplateIdAnnotation *TemplateId = takeTemplateIdAnnotation(Tok); |
Douglas Gregor | 1734317 | 2009-04-01 00:28:59 +0000 | [diff] [blame] | 1231 | if (TemplateId->Kind == TNK_Function_template) { |
| 1232 | Diag(Tok, diag::err_typename_refers_to_non_type_template) |
| 1233 | << Tok.getAnnotationRange(); |
John McCall | 9ba6166 | 2010-02-26 08:45:28 +0000 | [diff] [blame] | 1234 | return true; |
Douglas Gregor | 1734317 | 2009-04-01 00:28:59 +0000 | [diff] [blame] | 1235 | } |
Douglas Gregor | d57959a | 2009-03-27 23:10:48 +0000 | [diff] [blame] | 1236 | |
Douglas Gregor | a02411e | 2011-02-27 22:46:49 +0000 | [diff] [blame] | 1237 | ASTTemplateArgsPtr TemplateArgsPtr(Actions, |
| 1238 | TemplateId->getTemplateArgs(), |
| 1239 | TemplateId->NumArgs); |
| 1240 | |
| 1241 | Ty = Actions.ActOnTypenameType(getCurScope(), TypenameLoc, SS, |
| 1242 | /*FIXME:*/SourceLocation(), |
| 1243 | TemplateId->Template, |
| 1244 | TemplateId->TemplateNameLoc, |
| 1245 | TemplateId->LAngleLoc, |
| 1246 | TemplateArgsPtr, |
| 1247 | TemplateId->RAngleLoc); |
Douglas Gregor | 1734317 | 2009-04-01 00:28:59 +0000 | [diff] [blame] | 1248 | } else { |
| 1249 | Diag(Tok, diag::err_expected_type_name_after_typename) |
| 1250 | << SS.getRange(); |
John McCall | 9ba6166 | 2010-02-26 08:45:28 +0000 | [diff] [blame] | 1251 | return true; |
Douglas Gregor | 1734317 | 2009-04-01 00:28:59 +0000 | [diff] [blame] | 1252 | } |
| 1253 | |
Sebastian Redl | 39d6711 | 2010-02-08 19:35:18 +0000 | [diff] [blame] | 1254 | SourceLocation EndLoc = Tok.getLastLoc(); |
Douglas Gregor | 1734317 | 2009-04-01 00:28:59 +0000 | [diff] [blame] | 1255 | Tok.setKind(tok::annot_typename); |
John McCall | b3d8748 | 2010-08-24 05:47:05 +0000 | [diff] [blame] | 1256 | setTypeAnnotation(Tok, Ty.isInvalid() ? ParsedType() : Ty.get()); |
Sebastian Redl | 39d6711 | 2010-02-08 19:35:18 +0000 | [diff] [blame] | 1257 | Tok.setAnnotationEndLoc(EndLoc); |
Douglas Gregor | 1734317 | 2009-04-01 00:28:59 +0000 | [diff] [blame] | 1258 | Tok.setLocation(TypenameLoc); |
| 1259 | PP.AnnotateCachedTokens(Tok); |
John McCall | 9ba6166 | 2010-02-26 08:45:28 +0000 | [diff] [blame] | 1260 | return false; |
Douglas Gregor | d57959a | 2009-03-27 23:10:48 +0000 | [diff] [blame] | 1261 | } |
| 1262 | |
John McCall | ae03cb5 | 2009-12-19 00:35:18 +0000 | [diff] [blame] | 1263 | // Remembers whether the token was originally a scope annotation. |
| 1264 | bool wasScopeAnnotation = Tok.is(tok::annot_cxxscope); |
| 1265 | |
Argyrios Kyrtzidis | eb83ecd | 2008-11-08 16:45:02 +0000 | [diff] [blame] | 1266 | CXXScopeSpec SS; |
Argyrios Kyrtzidis | 4bdd91c | 2008-11-26 21:41:52 +0000 | [diff] [blame] | 1267 | if (getLang().CPlusPlus) |
John McCall | b3d8748 | 2010-08-24 05:47:05 +0000 | [diff] [blame] | 1268 | if (ParseOptionalCXXScopeSpecifier(SS, ParsedType(), EnteringContext)) |
John McCall | 9ba6166 | 2010-02-26 08:45:28 +0000 | [diff] [blame] | 1269 | return true; |
Argyrios Kyrtzidis | eb83ecd | 2008-11-08 16:45:02 +0000 | [diff] [blame] | 1270 | |
| 1271 | if (Tok.is(tok::identifier)) { |
Kaelyn Uhrain | fac9467 | 2011-10-11 01:02:41 +0000 | [diff] [blame] | 1272 | IdentifierInfo *CorrectedII = 0; |
Chris Lattner | 608d1fc | 2009-01-05 01:49:50 +0000 | [diff] [blame] | 1273 | // Determine whether the identifier is a type name. |
John McCall | b3d8748 | 2010-08-24 05:47:05 +0000 | [diff] [blame] | 1274 | if (ParsedType Ty = Actions.getTypeName(*Tok.getIdentifierInfo(), |
| 1275 | Tok.getLocation(), getCurScope(), |
Fariborz Jahanian | 1e52dfc | 2011-02-08 18:05:59 +0000 | [diff] [blame] | 1276 | &SS, false, |
Douglas Gregor | 9e87687 | 2011-03-01 18:12:44 +0000 | [diff] [blame] | 1277 | NextToken().is(tok::period), |
| 1278 | ParsedType(), |
Kaelyn Uhrain | fac9467 | 2011-10-11 01:02:41 +0000 | [diff] [blame] | 1279 | /*NonTrivialTypeSourceInfo*/true, |
| 1280 | NeedType ? &CorrectedII : NULL)) { |
| 1281 | // A FixIt was applied as a result of typo correction |
| 1282 | if (CorrectedII) |
| 1283 | Tok.setIdentifierInfo(CorrectedII); |
Chris Lattner | 608d1fc | 2009-01-05 01:49:50 +0000 | [diff] [blame] | 1284 | // This is a typename. Replace the current token in-place with an |
| 1285 | // annotation type token. |
Chris Lattner | b31757b | 2009-01-06 05:06:21 +0000 | [diff] [blame] | 1286 | Tok.setKind(tok::annot_typename); |
John McCall | b3d8748 | 2010-08-24 05:47:05 +0000 | [diff] [blame] | 1287 | setTypeAnnotation(Tok, Ty); |
Chris Lattner | 608d1fc | 2009-01-05 01:49:50 +0000 | [diff] [blame] | 1288 | Tok.setAnnotationEndLoc(Tok.getLocation()); |
| 1289 | if (SS.isNotEmpty()) // it was a C++ qualified type name. |
| 1290 | Tok.setLocation(SS.getBeginLoc()); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1291 | |
Chris Lattner | 608d1fc | 2009-01-05 01:49:50 +0000 | [diff] [blame] | 1292 | // In case the tokens were cached, have Preprocessor replace |
| 1293 | // them with the annotation token. |
| 1294 | PP.AnnotateCachedTokens(Tok); |
John McCall | 9ba6166 | 2010-02-26 08:45:28 +0000 | [diff] [blame] | 1295 | return false; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1296 | } |
Douglas Gregor | 39a8de1 | 2009-02-25 19:37:18 +0000 | [diff] [blame] | 1297 | |
| 1298 | if (!getLang().CPlusPlus) { |
Chris Lattner | 608d1fc | 2009-01-05 01:49:50 +0000 | [diff] [blame] | 1299 | // If we're in C, we can't have :: tokens at all (the lexer won't return |
| 1300 | // 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] | 1301 | // just early exit. |
Chris Lattner | 608d1fc | 2009-01-05 01:49:50 +0000 | [diff] [blame] | 1302 | return false; |
Argyrios Kyrtzidis | eb83ecd | 2008-11-08 16:45:02 +0000 | [diff] [blame] | 1303 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1304 | |
Douglas Gregor | 39a8de1 | 2009-02-25 19:37:18 +0000 | [diff] [blame] | 1305 | // 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] | 1306 | if (NextToken().is(tok::less)) { |
Douglas Gregor | 7532dc6 | 2009-03-30 22:58:21 +0000 | [diff] [blame] | 1307 | TemplateTy Template; |
Douglas Gregor | 014e88d | 2009-11-03 23:16:33 +0000 | [diff] [blame] | 1308 | UnqualifiedId TemplateName; |
| 1309 | TemplateName.setIdentifier(Tok.getIdentifierInfo(), Tok.getLocation()); |
Douglas Gregor | 1fd6d44 | 2010-05-21 23:18:07 +0000 | [diff] [blame] | 1310 | bool MemberOfUnknownSpecialization; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1311 | if (TemplateNameKind TNK |
Abramo Bagnara | 7c15353 | 2010-08-06 12:11:11 +0000 | [diff] [blame] | 1312 | = Actions.isTemplateName(getCurScope(), SS, |
| 1313 | /*hasTemplateKeyword=*/false, TemplateName, |
John McCall | b3d8748 | 2010-08-24 05:47:05 +0000 | [diff] [blame] | 1314 | /*ObjectType=*/ ParsedType(), |
| 1315 | EnteringContext, |
Abramo Bagnara | 7c15353 | 2010-08-06 12:11:11 +0000 | [diff] [blame] | 1316 | Template, MemberOfUnknownSpecialization)) { |
Douglas Gregor | ca1bdd7 | 2009-11-04 00:56:37 +0000 | [diff] [blame] | 1317 | // Consume the identifier. |
| 1318 | ConsumeToken(); |
Douglas Gregor | 059101f | 2011-03-02 00:47:37 +0000 | [diff] [blame] | 1319 | if (AnnotateTemplateIdToken(Template, TNK, SS, TemplateName)) { |
Chris Lattner | c8e27cc | 2009-06-26 04:27:47 +0000 | [diff] [blame] | 1320 | // If an unrecoverable error occurred, we need to return true here, |
| 1321 | // because the token stream is in a damaged state. We may not return |
| 1322 | // a valid identifier. |
John McCall | 9ba6166 | 2010-02-26 08:45:28 +0000 | [diff] [blame] | 1323 | return true; |
Chris Lattner | c8e27cc | 2009-06-26 04:27:47 +0000 | [diff] [blame] | 1324 | } |
Douglas Gregor | ca1bdd7 | 2009-11-04 00:56:37 +0000 | [diff] [blame] | 1325 | } |
Douglas Gregor | 55f6b14 | 2009-02-09 18:46:07 +0000 | [diff] [blame] | 1326 | } |
Douglas Gregor | d6fb7ef | 2008-12-18 19:37:40 +0000 | [diff] [blame] | 1327 | |
Douglas Gregor | 39a8de1 | 2009-02-25 19:37:18 +0000 | [diff] [blame] | 1328 | // The current token, which is either an identifier or a |
| 1329 | // template-id, is not part of the annotation. Fall through to |
| 1330 | // push that token back into the stream and complete the C++ scope |
| 1331 | // specifier annotation. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1332 | } |
Argyrios Kyrtzidis | eb83ecd | 2008-11-08 16:45:02 +0000 | [diff] [blame] | 1333 | |
Douglas Gregor | 39a8de1 | 2009-02-25 19:37:18 +0000 | [diff] [blame] | 1334 | if (Tok.is(tok::annot_template_id)) { |
Argyrios Kyrtzidis | 25a7676 | 2011-06-22 06:09:49 +0000 | [diff] [blame] | 1335 | TemplateIdAnnotation *TemplateId = takeTemplateIdAnnotation(Tok); |
Douglas Gregor | c45c232 | 2009-03-31 00:43:58 +0000 | [diff] [blame] | 1336 | if (TemplateId->Kind == TNK_Type_template) { |
Douglas Gregor | 39a8de1 | 2009-02-25 19:37:18 +0000 | [diff] [blame] | 1337 | // A template-id that refers to a type was parsed into a |
| 1338 | // template-id annotation in a context where we weren't allowed |
| 1339 | // to produce a type annotation token. Update the template-id |
| 1340 | // annotation token to a type annotation token now. |
Douglas Gregor | 059101f | 2011-03-02 00:47:37 +0000 | [diff] [blame] | 1341 | AnnotateTemplateIdTokenAsType(); |
John McCall | 9ba6166 | 2010-02-26 08:45:28 +0000 | [diff] [blame] | 1342 | return false; |
Douglas Gregor | 39a8de1 | 2009-02-25 19:37:18 +0000 | [diff] [blame] | 1343 | } |
| 1344 | } |
Douglas Gregor | d6fb7ef | 2008-12-18 19:37:40 +0000 | [diff] [blame] | 1345 | |
Chris Lattner | 6ec76d4 | 2009-01-04 22:32:19 +0000 | [diff] [blame] | 1346 | if (SS.isEmpty()) |
John McCall | 9ba6166 | 2010-02-26 08:45:28 +0000 | [diff] [blame] | 1347 | return false; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1348 | |
Chris Lattner | 6ec76d4 | 2009-01-04 22:32:19 +0000 | [diff] [blame] | 1349 | // A C++ scope specifier that isn't followed by a typename. |
| 1350 | // Push the current token back into the token stream (or revert it if it is |
| 1351 | // cached) and use an annotation scope token for current token. |
| 1352 | if (PP.isBacktrackEnabled()) |
| 1353 | PP.RevertCachedTokens(1); |
| 1354 | else |
| 1355 | PP.EnterToken(Tok); |
| 1356 | Tok.setKind(tok::annot_cxxscope); |
Douglas Gregor | c34348a | 2011-02-24 17:54:50 +0000 | [diff] [blame] | 1357 | Tok.setAnnotationValue(Actions.SaveNestedNameSpecifierAnnotation(SS)); |
Chris Lattner | 6ec76d4 | 2009-01-04 22:32:19 +0000 | [diff] [blame] | 1358 | Tok.setAnnotationRange(SS.getRange()); |
Argyrios Kyrtzidis | eb83ecd | 2008-11-08 16:45:02 +0000 | [diff] [blame] | 1359 | |
John McCall | ae03cb5 | 2009-12-19 00:35:18 +0000 | [diff] [blame] | 1360 | // In case the tokens were cached, have Preprocessor replace them |
| 1361 | // with the annotation token. We don't need to do this if we've |
| 1362 | // just reverted back to the state we were in before being called. |
| 1363 | if (!wasScopeAnnotation) |
| 1364 | PP.AnnotateCachedTokens(Tok); |
John McCall | 9ba6166 | 2010-02-26 08:45:28 +0000 | [diff] [blame] | 1365 | return false; |
Argyrios Kyrtzidis | eb83ecd | 2008-11-08 16:45:02 +0000 | [diff] [blame] | 1366 | } |
| 1367 | |
| 1368 | /// TryAnnotateScopeToken - Like TryAnnotateTypeOrScopeToken but only |
Douglas Gregor | 39a8de1 | 2009-02-25 19:37:18 +0000 | [diff] [blame] | 1369 | /// annotates C++ scope specifiers and template-ids. This returns |
Chris Lattner | c8e27cc | 2009-06-26 04:27:47 +0000 | [diff] [blame] | 1370 | /// true if the token was annotated or there was an error that could not be |
| 1371 | /// recovered from. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1372 | /// |
Chris Lattner | 55a7cef | 2009-01-05 00:13:00 +0000 | [diff] [blame] | 1373 | /// Note that this routine emits an error if you call it with ::new or ::delete |
| 1374 | /// 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] | 1375 | bool Parser::TryAnnotateCXXScopeToken(bool EnteringContext) { |
Argyrios Kyrtzidis | 4bdd91c | 2008-11-26 21:41:52 +0000 | [diff] [blame] | 1376 | assert(getLang().CPlusPlus && |
Chris Lattner | 6ec76d4 | 2009-01-04 22:32:19 +0000 | [diff] [blame] | 1377 | "Call sites of this function should be guarded by checking for C++"); |
Douglas Gregor | 3b88735 | 2011-04-27 04:48:22 +0000 | [diff] [blame] | 1378 | assert((Tok.is(tok::identifier) || Tok.is(tok::coloncolon) || |
David Blaikie | 42d6d0c | 2011-12-04 05:04:18 +0000 | [diff] [blame] | 1379 | (Tok.is(tok::annot_template_id) && NextToken().is(tok::coloncolon)) || |
| 1380 | Tok.is(tok::kw_decltype)) && "Cannot be a type or scope token!"); |
Argyrios Kyrtzidis | eb83ecd | 2008-11-08 16:45:02 +0000 | [diff] [blame] | 1381 | |
Argyrios Kyrtzidis | 4bdd91c | 2008-11-26 21:41:52 +0000 | [diff] [blame] | 1382 | CXXScopeSpec SS; |
John McCall | b3d8748 | 2010-08-24 05:47:05 +0000 | [diff] [blame] | 1383 | if (ParseOptionalCXXScopeSpecifier(SS, ParsedType(), EnteringContext)) |
John McCall | 9ba6166 | 2010-02-26 08:45:28 +0000 | [diff] [blame] | 1384 | return true; |
Jeffrey Yasskin | edc2877 | 2010-04-07 23:29:58 +0000 | [diff] [blame] | 1385 | if (SS.isEmpty()) |
John McCall | 9ba6166 | 2010-02-26 08:45:28 +0000 | [diff] [blame] | 1386 | return false; |
Argyrios Kyrtzidis | eb83ecd | 2008-11-08 16:45:02 +0000 | [diff] [blame] | 1387 | |
Chris Lattner | 6ec76d4 | 2009-01-04 22:32:19 +0000 | [diff] [blame] | 1388 | // Push the current token back into the token stream (or revert it if it is |
| 1389 | // cached) and use an annotation scope token for current token. |
| 1390 | if (PP.isBacktrackEnabled()) |
| 1391 | PP.RevertCachedTokens(1); |
| 1392 | else |
| 1393 | PP.EnterToken(Tok); |
| 1394 | Tok.setKind(tok::annot_cxxscope); |
Douglas Gregor | c34348a | 2011-02-24 17:54:50 +0000 | [diff] [blame] | 1395 | Tok.setAnnotationValue(Actions.SaveNestedNameSpecifierAnnotation(SS)); |
Chris Lattner | 6ec76d4 | 2009-01-04 22:32:19 +0000 | [diff] [blame] | 1396 | Tok.setAnnotationRange(SS.getRange()); |
Argyrios Kyrtzidis | eb83ecd | 2008-11-08 16:45:02 +0000 | [diff] [blame] | 1397 | |
Chris Lattner | 6ec76d4 | 2009-01-04 22:32:19 +0000 | [diff] [blame] | 1398 | // In case the tokens were cached, have Preprocessor replace them with the |
| 1399 | // annotation token. |
| 1400 | PP.AnnotateCachedTokens(Tok); |
John McCall | 9ba6166 | 2010-02-26 08:45:28 +0000 | [diff] [blame] | 1401 | return false; |
Argyrios Kyrtzidis | eb83ecd | 2008-11-08 16:45:02 +0000 | [diff] [blame] | 1402 | } |
John McCall | 6c94a6d | 2009-11-03 19:33:12 +0000 | [diff] [blame] | 1403 | |
Argyrios Kyrtzidis | a6eb5f8 | 2010-10-08 02:39:23 +0000 | [diff] [blame] | 1404 | bool Parser::isTokenEqualOrMistypedEqualEqual(unsigned DiagID) { |
| 1405 | if (Tok.is(tok::equalequal)) { |
| 1406 | // We have '==' in a context that we would expect a '='. |
| 1407 | // The user probably made a typo, intending to type '='. Emit diagnostic, |
| 1408 | // fixit hint to turn '==' -> '=' and continue as if the user typed '='. |
| 1409 | Diag(Tok, DiagID) |
| 1410 | << FixItHint::CreateReplacement(SourceRange(Tok.getLocation()), |
| 1411 | getTokenSimpleSpelling(tok::equal)); |
| 1412 | return true; |
| 1413 | } |
| 1414 | |
| 1415 | return Tok.is(tok::equal); |
| 1416 | } |
| 1417 | |
Argyrios Kyrtzidis | 7d10087 | 2011-09-04 03:32:15 +0000 | [diff] [blame] | 1418 | SourceLocation Parser::handleUnexpectedCodeCompletionToken() { |
| 1419 | assert(Tok.is(tok::code_completion)); |
| 1420 | PrevTokLocation = Tok.getLocation(); |
| 1421 | |
Douglas Gregor | 23c94db | 2010-07-02 17:43:08 +0000 | [diff] [blame] | 1422 | for (Scope *S = getCurScope(); S; S = S->getParent()) { |
Douglas Gregor | dc84534 | 2010-05-25 05:58:43 +0000 | [diff] [blame] | 1423 | if (S->getFlags() & Scope::FnScope) { |
John McCall | f312b1e | 2010-08-26 23:41:50 +0000 | [diff] [blame] | 1424 | Actions.CodeCompleteOrdinaryName(getCurScope(), Sema::PCC_RecoveryInFunction); |
Argyrios Kyrtzidis | 7d10087 | 2011-09-04 03:32:15 +0000 | [diff] [blame] | 1425 | cutOffParsing(); |
| 1426 | return PrevTokLocation; |
Douglas Gregor | dc84534 | 2010-05-25 05:58:43 +0000 | [diff] [blame] | 1427 | } |
| 1428 | |
| 1429 | if (S->getFlags() & Scope::ClassScope) { |
John McCall | f312b1e | 2010-08-26 23:41:50 +0000 | [diff] [blame] | 1430 | Actions.CodeCompleteOrdinaryName(getCurScope(), Sema::PCC_Class); |
Argyrios Kyrtzidis | 7d10087 | 2011-09-04 03:32:15 +0000 | [diff] [blame] | 1431 | cutOffParsing(); |
| 1432 | return PrevTokLocation; |
Douglas Gregor | dc84534 | 2010-05-25 05:58:43 +0000 | [diff] [blame] | 1433 | } |
| 1434 | } |
| 1435 | |
John McCall | f312b1e | 2010-08-26 23:41:50 +0000 | [diff] [blame] | 1436 | Actions.CodeCompleteOrdinaryName(getCurScope(), Sema::PCC_Namespace); |
Argyrios Kyrtzidis | 7d10087 | 2011-09-04 03:32:15 +0000 | [diff] [blame] | 1437 | cutOffParsing(); |
| 1438 | return PrevTokLocation; |
Douglas Gregor | dc84534 | 2010-05-25 05:58:43 +0000 | [diff] [blame] | 1439 | } |
| 1440 | |
John McCall | 6c94a6d | 2009-11-03 19:33:12 +0000 | [diff] [blame] | 1441 | // Anchor the Parser::FieldCallback vtable to this translation unit. |
| 1442 | // We use a spurious method instead of the destructor because |
| 1443 | // destroying FieldCallbacks can actually be slightly |
| 1444 | // performance-sensitive. |
| 1445 | void Parser::FieldCallback::_anchor() { |
| 1446 | } |
Douglas Gregor | f44e854 | 2010-08-24 19:08:16 +0000 | [diff] [blame] | 1447 | |
| 1448 | // Code-completion pass-through functions |
| 1449 | |
| 1450 | void Parser::CodeCompleteDirective(bool InConditional) { |
Douglas Gregor | f29c523 | 2010-08-24 22:20:20 +0000 | [diff] [blame] | 1451 | Actions.CodeCompletePreprocessorDirective(InConditional); |
Douglas Gregor | f44e854 | 2010-08-24 19:08:16 +0000 | [diff] [blame] | 1452 | } |
| 1453 | |
| 1454 | void Parser::CodeCompleteInConditionalExclusion() { |
| 1455 | Actions.CodeCompleteInPreprocessorConditionalExclusion(getCurScope()); |
| 1456 | } |
Douglas Gregor | 1fbb447 | 2010-08-24 20:21:13 +0000 | [diff] [blame] | 1457 | |
| 1458 | void Parser::CodeCompleteMacroName(bool IsDefinition) { |
Douglas Gregor | f29c523 | 2010-08-24 22:20:20 +0000 | [diff] [blame] | 1459 | Actions.CodeCompletePreprocessorMacroName(IsDefinition); |
| 1460 | } |
| 1461 | |
| 1462 | void Parser::CodeCompletePreprocessorExpression() { |
| 1463 | Actions.CodeCompletePreprocessorExpression(); |
| 1464 | } |
| 1465 | |
| 1466 | void Parser::CodeCompleteMacroArgument(IdentifierInfo *Macro, |
| 1467 | MacroInfo *MacroInfo, |
| 1468 | unsigned ArgumentIndex) { |
| 1469 | Actions.CodeCompletePreprocessorMacroArgument(getCurScope(), Macro, MacroInfo, |
| 1470 | ArgumentIndex); |
Douglas Gregor | 1fbb447 | 2010-08-24 20:21:13 +0000 | [diff] [blame] | 1471 | } |
Douglas Gregor | 55817af | 2010-08-25 17:04:25 +0000 | [diff] [blame] | 1472 | |
| 1473 | void Parser::CodeCompleteNaturalLanguage() { |
| 1474 | Actions.CodeCompleteNaturalLanguage(); |
| 1475 | } |
Francois Pichet | f986038 | 2011-05-07 17:30:27 +0000 | [diff] [blame] | 1476 | |
Douglas Gregor | 3896fc5 | 2011-10-24 22:31:10 +0000 | [diff] [blame] | 1477 | bool Parser::ParseMicrosoftIfExistsCondition(IfExistsCondition& Result) { |
Francois Pichet | f986038 | 2011-05-07 17:30:27 +0000 | [diff] [blame] | 1478 | assert((Tok.is(tok::kw___if_exists) || Tok.is(tok::kw___if_not_exists)) && |
| 1479 | "Expected '__if_exists' or '__if_not_exists'"); |
Douglas Gregor | 3896fc5 | 2011-10-24 22:31:10 +0000 | [diff] [blame] | 1480 | Result.IsIfExists = Tok.is(tok::kw___if_exists); |
| 1481 | Result.KeywordLoc = ConsumeToken(); |
Francois Pichet | f986038 | 2011-05-07 17:30:27 +0000 | [diff] [blame] | 1482 | |
Douglas Gregor | 4a8dfb5 | 2011-10-12 16:37:45 +0000 | [diff] [blame] | 1483 | BalancedDelimiterTracker T(*this, tok::l_paren); |
| 1484 | if (T.consumeOpen()) { |
Douglas Gregor | 3896fc5 | 2011-10-24 22:31:10 +0000 | [diff] [blame] | 1485 | Diag(Tok, diag::err_expected_lparen_after) |
| 1486 | << (Result.IsIfExists? "__if_exists" : "__if_not_exists"); |
Francois Pichet | f986038 | 2011-05-07 17:30:27 +0000 | [diff] [blame] | 1487 | return true; |
| 1488 | } |
Francois Pichet | f986038 | 2011-05-07 17:30:27 +0000 | [diff] [blame] | 1489 | |
| 1490 | // Parse nested-name-specifier. |
Douglas Gregor | efaa93a | 2011-11-07 17:33:42 +0000 | [diff] [blame] | 1491 | ParseOptionalCXXScopeSpecifier(Result.SS, ParsedType(), |
| 1492 | /*EnteringContext=*/false); |
Francois Pichet | f986038 | 2011-05-07 17:30:27 +0000 | [diff] [blame] | 1493 | |
| 1494 | // Check nested-name specifier. |
Douglas Gregor | 3896fc5 | 2011-10-24 22:31:10 +0000 | [diff] [blame] | 1495 | if (Result.SS.isInvalid()) { |
| 1496 | T.skipToEnd(); |
Francois Pichet | f986038 | 2011-05-07 17:30:27 +0000 | [diff] [blame] | 1497 | return true; |
| 1498 | } |
| 1499 | |
| 1500 | // Parse the unqualified-id. |
Douglas Gregor | 3896fc5 | 2011-10-24 22:31:10 +0000 | [diff] [blame] | 1501 | if (ParseUnqualifiedId(Result.SS, false, true, true, ParsedType(), |
| 1502 | Result.Name)) { |
| 1503 | T.skipToEnd(); |
Francois Pichet | f986038 | 2011-05-07 17:30:27 +0000 | [diff] [blame] | 1504 | return true; |
| 1505 | } |
| 1506 | |
Douglas Gregor | 3896fc5 | 2011-10-24 22:31:10 +0000 | [diff] [blame] | 1507 | if (T.consumeClose()) |
Francois Pichet | f986038 | 2011-05-07 17:30:27 +0000 | [diff] [blame] | 1508 | return true; |
Douglas Gregor | 3896fc5 | 2011-10-24 22:31:10 +0000 | [diff] [blame] | 1509 | |
Francois Pichet | f986038 | 2011-05-07 17:30:27 +0000 | [diff] [blame] | 1510 | // Check if the symbol exists. |
Douglas Gregor | 65019ac | 2011-10-25 03:44:56 +0000 | [diff] [blame] | 1511 | switch (Actions.CheckMicrosoftIfExistsSymbol(getCurScope(), Result.KeywordLoc, |
| 1512 | Result.IsIfExists, Result.SS, |
Douglas Gregor | 3896fc5 | 2011-10-24 22:31:10 +0000 | [diff] [blame] | 1513 | Result.Name)) { |
| 1514 | case Sema::IER_Exists: |
| 1515 | Result.Behavior = Result.IsIfExists ? IEB_Parse : IEB_Skip; |
| 1516 | break; |
Francois Pichet | f986038 | 2011-05-07 17:30:27 +0000 | [diff] [blame] | 1517 | |
Douglas Gregor | 3896fc5 | 2011-10-24 22:31:10 +0000 | [diff] [blame] | 1518 | case Sema::IER_DoesNotExist: |
| 1519 | Result.Behavior = !Result.IsIfExists ? IEB_Parse : IEB_Skip; |
| 1520 | break; |
| 1521 | |
| 1522 | case Sema::IER_Dependent: |
| 1523 | Result.Behavior = IEB_Dependent; |
| 1524 | break; |
Douglas Gregor | 65019ac | 2011-10-25 03:44:56 +0000 | [diff] [blame] | 1525 | |
| 1526 | case Sema::IER_Error: |
| 1527 | return true; |
Douglas Gregor | 3896fc5 | 2011-10-24 22:31:10 +0000 | [diff] [blame] | 1528 | } |
Francois Pichet | f986038 | 2011-05-07 17:30:27 +0000 | [diff] [blame] | 1529 | |
| 1530 | return false; |
| 1531 | } |
| 1532 | |
Francois Pichet | 563a645 | 2011-05-25 10:19:49 +0000 | [diff] [blame] | 1533 | void Parser::ParseMicrosoftIfExistsExternalDeclaration() { |
Douglas Gregor | 3896fc5 | 2011-10-24 22:31:10 +0000 | [diff] [blame] | 1534 | IfExistsCondition Result; |
Francois Pichet | f986038 | 2011-05-07 17:30:27 +0000 | [diff] [blame] | 1535 | if (ParseMicrosoftIfExistsCondition(Result)) |
| 1536 | return; |
| 1537 | |
Douglas Gregor | 3896fc5 | 2011-10-24 22:31:10 +0000 | [diff] [blame] | 1538 | BalancedDelimiterTracker Braces(*this, tok::l_brace); |
| 1539 | if (Braces.consumeOpen()) { |
Francois Pichet | f986038 | 2011-05-07 17:30:27 +0000 | [diff] [blame] | 1540 | Diag(Tok, diag::err_expected_lbrace); |
| 1541 | return; |
| 1542 | } |
Francois Pichet | f986038 | 2011-05-07 17:30:27 +0000 | [diff] [blame] | 1543 | |
Douglas Gregor | 3896fc5 | 2011-10-24 22:31:10 +0000 | [diff] [blame] | 1544 | switch (Result.Behavior) { |
| 1545 | case IEB_Parse: |
| 1546 | // Parse declarations below. |
| 1547 | break; |
| 1548 | |
| 1549 | case IEB_Dependent: |
| 1550 | llvm_unreachable("Cannot have a dependent external declaration"); |
| 1551 | |
| 1552 | case IEB_Skip: |
| 1553 | Braces.skipToEnd(); |
Francois Pichet | f986038 | 2011-05-07 17:30:27 +0000 | [diff] [blame] | 1554 | return; |
| 1555 | } |
| 1556 | |
Douglas Gregor | 3896fc5 | 2011-10-24 22:31:10 +0000 | [diff] [blame] | 1557 | // Parse the declarations. |
| 1558 | while (Tok.isNot(tok::r_brace) && Tok.isNot(tok::eof)) { |
Francois Pichet | f986038 | 2011-05-07 17:30:27 +0000 | [diff] [blame] | 1559 | ParsedAttributesWithRange attrs(AttrFactory); |
| 1560 | MaybeParseCXX0XAttributes(attrs); |
| 1561 | MaybeParseMicrosoftAttributes(attrs); |
| 1562 | DeclGroupPtrTy Result = ParseExternalDeclaration(attrs); |
| 1563 | if (Result && !getCurScope()->getParent()) |
| 1564 | Actions.getASTConsumer().HandleTopLevelDecl(Result.get()); |
Douglas Gregor | 3896fc5 | 2011-10-24 22:31:10 +0000 | [diff] [blame] | 1565 | } |
| 1566 | Braces.consumeClose(); |
Francois Pichet | f986038 | 2011-05-07 17:30:27 +0000 | [diff] [blame] | 1567 | } |
Douglas Gregor | 6aa52ec | 2011-08-26 23:56:07 +0000 | [diff] [blame] | 1568 | |
Douglas Gregor | 5948ae1 | 2012-01-03 18:04:46 +0000 | [diff] [blame] | 1569 | Parser::DeclGroupPtrTy Parser::ParseModuleImport(SourceLocation AtLoc) { |
Douglas Gregor | c13a34b | 2012-01-03 19:32:59 +0000 | [diff] [blame] | 1570 | assert(Tok.isObjCAtKeyword(tok::objc_import) && |
Douglas Gregor | 65030af | 2011-08-31 18:19:09 +0000 | [diff] [blame] | 1571 | "Improper start to module import"); |
Douglas Gregor | 6aa52ec | 2011-08-26 23:56:07 +0000 | [diff] [blame] | 1572 | SourceLocation ImportLoc = ConsumeToken(); |
| 1573 | |
Douglas Gregor | 3d3589d | 2011-11-30 00:36:36 +0000 | [diff] [blame] | 1574 | llvm::SmallVector<std::pair<IdentifierInfo *, SourceLocation>, 2> Path; |
Douglas Gregor | 6aa52ec | 2011-08-26 23:56:07 +0000 | [diff] [blame] | 1575 | |
Douglas Gregor | 3d3589d | 2011-11-30 00:36:36 +0000 | [diff] [blame] | 1576 | // Parse the module path. |
| 1577 | do { |
| 1578 | if (!Tok.is(tok::identifier)) { |
| 1579 | Diag(Tok, diag::err_module_expected_ident); |
| 1580 | SkipUntil(tok::semi); |
| 1581 | return DeclGroupPtrTy(); |
| 1582 | } |
| 1583 | |
| 1584 | // Record this part of the module path. |
| 1585 | Path.push_back(std::make_pair(Tok.getIdentifierInfo(), Tok.getLocation())); |
| 1586 | ConsumeToken(); |
| 1587 | |
| 1588 | if (Tok.is(tok::period)) { |
| 1589 | ConsumeToken(); |
| 1590 | continue; |
| 1591 | } |
| 1592 | |
| 1593 | break; |
| 1594 | } while (true); |
| 1595 | |
Douglas Gregor | 5948ae1 | 2012-01-03 18:04:46 +0000 | [diff] [blame] | 1596 | DeclResult Import = Actions.ActOnModuleImport(AtLoc, ImportLoc, Path); |
Douglas Gregor | 6aa52ec | 2011-08-26 23:56:07 +0000 | [diff] [blame] | 1597 | ExpectAndConsumeSemi(diag::err_module_expected_semi); |
| 1598 | if (Import.isInvalid()) |
| 1599 | return DeclGroupPtrTy(); |
| 1600 | |
| 1601 | return Actions.ConvertDeclToDeclGroup(Import.get()); |
| 1602 | } |
Douglas Gregor | 4a8dfb5 | 2011-10-12 16:37:45 +0000 | [diff] [blame] | 1603 | |
| 1604 | bool Parser::BalancedDelimiterTracker::consumeOpen() { |
| 1605 | // Try to consume the token we are holding |
| 1606 | if (P.Tok.is(Kind)) { |
| 1607 | P.QuantityTracker.push(Kind); |
| 1608 | Cleanup = true; |
| 1609 | if (P.QuantityTracker.getDepth(Kind) < MaxDepth) { |
| 1610 | LOpen = P.ConsumeAnyToken(); |
| 1611 | return false; |
| 1612 | } else { |
| 1613 | P.Diag(P.Tok, diag::err_parser_impl_limit_overflow); |
| 1614 | P.SkipUntil(tok::eof); |
| 1615 | } |
| 1616 | } |
| 1617 | return true; |
| 1618 | } |
| 1619 | |
| 1620 | bool Parser::BalancedDelimiterTracker::expectAndConsume(unsigned DiagID, |
| 1621 | const char *Msg, |
| 1622 | tok::TokenKind SkipToToc ) { |
| 1623 | LOpen = P.Tok.getLocation(); |
| 1624 | if (!P.ExpectAndConsume(Kind, DiagID, Msg, SkipToToc)) { |
| 1625 | P.QuantityTracker.push(Kind); |
| 1626 | Cleanup = true; |
| 1627 | if (P.QuantityTracker.getDepth(Kind) < MaxDepth) { |
| 1628 | return false; |
| 1629 | } else { |
| 1630 | P.Diag(P.Tok, diag::err_parser_impl_limit_overflow); |
| 1631 | P.SkipUntil(tok::eof); |
| 1632 | } |
| 1633 | } |
| 1634 | return true; |
| 1635 | } |
| 1636 | |
| 1637 | bool Parser::BalancedDelimiterTracker::consumeClose() { |
| 1638 | if (P.Tok.is(Close)) { |
| 1639 | LClose = P.ConsumeAnyToken(); |
| 1640 | if (Cleanup) |
| 1641 | P.QuantityTracker.pop(Kind); |
| 1642 | |
| 1643 | Cleanup = false; |
| 1644 | return false; |
| 1645 | } else { |
| 1646 | const char *LHSName = "unknown"; |
| 1647 | diag::kind DID = diag::err_parse_error; |
| 1648 | switch (Close) { |
| 1649 | default: break; |
| 1650 | case tok::r_paren : LHSName = "("; DID = diag::err_expected_rparen; break; |
| 1651 | case tok::r_brace : LHSName = "{"; DID = diag::err_expected_rbrace; break; |
| 1652 | case tok::r_square: LHSName = "["; DID = diag::err_expected_rsquare; break; |
| 1653 | case tok::greater: LHSName = "<"; DID = diag::err_expected_greater; break; |
| 1654 | case tok::greatergreatergreater: |
| 1655 | LHSName = "<<<"; DID = diag::err_expected_ggg; break; |
| 1656 | } |
| 1657 | P.Diag(P.Tok, DID); |
| 1658 | P.Diag(LOpen, diag::note_matching) << LHSName; |
| 1659 | if (P.SkipUntil(Close)) |
| 1660 | LClose = P.Tok.getLocation(); |
| 1661 | } |
| 1662 | return true; |
| 1663 | } |
Douglas Gregor | 3896fc5 | 2011-10-24 22:31:10 +0000 | [diff] [blame] | 1664 | |
| 1665 | void Parser::BalancedDelimiterTracker::skipToEnd() { |
| 1666 | P.SkipUntil(Close, false); |
| 1667 | Cleanup = false; |
| 1668 | } |