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" |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 16 | #include "clang/Parse/DeclSpec.h" |
| 17 | #include "clang/Parse/Scope.h" |
Douglas Gregor | 314b97f | 2009-11-10 19:49:08 +0000 | [diff] [blame] | 18 | #include "clang/Parse/Template.h" |
Chris Lattner | 0102c30 | 2009-03-05 07:24:28 +0000 | [diff] [blame] | 19 | #include "llvm/Support/raw_ostream.h" |
Chris Lattner | d167ca0 | 2009-12-10 00:21:05 +0000 | [diff] [blame] | 20 | #include "RAIIObjectsForParser.h" |
Daniel Dunbar | fcdd8fe | 2008-10-04 19:21:03 +0000 | [diff] [blame] | 21 | #include "ParsePragma.h" |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 22 | using namespace clang; |
| 23 | |
Douglas Gregor | 2e22253 | 2009-07-02 17:08:52 +0000 | [diff] [blame] | 24 | /// \brief A comment handler that passes comments found by the preprocessor |
| 25 | /// to the parser action. |
| 26 | class ActionCommentHandler : public CommentHandler { |
| 27 | Action &Actions; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 28 | |
Douglas Gregor | 2e22253 | 2009-07-02 17:08:52 +0000 | [diff] [blame] | 29 | public: |
| 30 | explicit ActionCommentHandler(Action &Actions) : Actions(Actions) { } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 31 | |
Douglas Gregor | 2e22253 | 2009-07-02 17:08:52 +0000 | [diff] [blame] | 32 | virtual void HandleComment(Preprocessor &PP, SourceRange Comment) { |
| 33 | Actions.ActOnComment(Comment); |
| 34 | } |
| 35 | }; |
| 36 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 37 | Parser::Parser(Preprocessor &pp, Action &actions) |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 38 | : CrashInfo(*this), PP(pp), Actions(actions), Diags(PP.getDiagnostics()), |
Douglas Gregor | b13bc41 | 2009-08-25 00:17:23 +0000 | [diff] [blame] | 39 | GreaterThanIsOperator(true), TemplateParameterDepth(0) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 40 | Tok.setKind(tok::eof); |
| 41 | CurScope = 0; |
Chris Lattner | 9e344c6 | 2007-07-15 00:04:39 +0000 | [diff] [blame] | 42 | NumCachedScopes = 0; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 43 | ParenCount = BracketCount = BraceCount = 0; |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 44 | ObjCImpDecl = DeclPtrTy(); |
Daniel Dunbar | fcdd8fe | 2008-10-04 19:21:03 +0000 | [diff] [blame] | 45 | |
| 46 | // Add #pragma handlers. These are removed and destroyed in the |
| 47 | // destructor. |
Ted Kremenek | 4726d03 | 2009-03-23 22:28:25 +0000 | [diff] [blame] | 48 | PackHandler.reset(new |
| 49 | PragmaPackHandler(&PP.getIdentifierTable().get("pack"), actions)); |
| 50 | PP.AddPragmaHandler(0, PackHandler.get()); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 51 | |
Ted Kremenek | 4726d03 | 2009-03-23 22:28:25 +0000 | [diff] [blame] | 52 | UnusedHandler.reset(new |
| 53 | PragmaUnusedHandler(&PP.getIdentifierTable().get("unused"), actions, |
| 54 | *this)); |
| 55 | PP.AddPragmaHandler(0, UnusedHandler.get()); |
Eli Friedman | 9991479 | 2009-06-05 00:49:58 +0000 | [diff] [blame] | 56 | |
| 57 | WeakHandler.reset(new |
| 58 | PragmaWeakHandler(&PP.getIdentifierTable().get("weak"), actions)); |
| 59 | PP.AddPragmaHandler(0, WeakHandler.get()); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 60 | |
Douglas Gregor | 2e22253 | 2009-07-02 17:08:52 +0000 | [diff] [blame] | 61 | CommentHandler.reset(new ActionCommentHandler(actions)); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 62 | PP.AddCommentHandler(CommentHandler.get()); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 63 | } |
| 64 | |
Chris Lattner | 0102c30 | 2009-03-05 07:24:28 +0000 | [diff] [blame] | 65 | /// If a crash happens while the parser is active, print out a line indicating |
| 66 | /// what the current token is. |
| 67 | void PrettyStackTraceParserEntry::print(llvm::raw_ostream &OS) const { |
| 68 | const Token &Tok = P.getCurToken(); |
Chris Lattner | ddcbc0a | 2009-03-05 07:27:50 +0000 | [diff] [blame] | 69 | if (Tok.is(tok::eof)) { |
Chris Lattner | 0102c30 | 2009-03-05 07:24:28 +0000 | [diff] [blame] | 70 | OS << "<eof> parser at end of file\n"; |
| 71 | return; |
| 72 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 73 | |
Chris Lattner | ddcbc0a | 2009-03-05 07:27:50 +0000 | [diff] [blame] | 74 | if (Tok.getLocation().isInvalid()) { |
| 75 | OS << "<unknown> parser at unknown location\n"; |
| 76 | return; |
| 77 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 78 | |
Chris Lattner | 0102c30 | 2009-03-05 07:24:28 +0000 | [diff] [blame] | 79 | const Preprocessor &PP = P.getPreprocessor(); |
| 80 | Tok.getLocation().print(OS, PP.getSourceManager()); |
Daniel Dunbar | 9fa31dd | 2009-10-17 06:13:04 +0000 | [diff] [blame] | 81 | if (Tok.isAnnotation()) |
| 82 | OS << ": at annotation token \n"; |
| 83 | else |
| 84 | OS << ": current parser token '" << PP.getSpelling(Tok) << "'\n"; |
Douglas Gregor | f780abc | 2008-12-30 03:27:21 +0000 | [diff] [blame] | 85 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 86 | |
Chris Lattner | 0102c30 | 2009-03-05 07:24:28 +0000 | [diff] [blame] | 87 | |
Chris Lattner | 3cbfe2c | 2008-11-22 00:59:29 +0000 | [diff] [blame] | 88 | DiagnosticBuilder Parser::Diag(SourceLocation Loc, unsigned DiagID) { |
Chris Lattner | 0102c30 | 2009-03-05 07:24:28 +0000 | [diff] [blame] | 89 | return Diags.Report(FullSourceLoc(Loc, PP.getSourceManager()), DiagID); |
Chris Lattner | 1ab3b96 | 2008-11-18 07:48:38 +0000 | [diff] [blame] | 90 | } |
| 91 | |
Chris Lattner | 3cbfe2c | 2008-11-22 00:59:29 +0000 | [diff] [blame] | 92 | DiagnosticBuilder Parser::Diag(const Token &Tok, unsigned DiagID) { |
Chris Lattner | 1ab3b96 | 2008-11-18 07:48:38 +0000 | [diff] [blame] | 93 | return Diag(Tok.getLocation(), DiagID); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 94 | } |
| 95 | |
Douglas Gregor | 4b2d3f7 | 2009-02-26 21:00:50 +0000 | [diff] [blame] | 96 | /// \brief Emits a diagnostic suggesting parentheses surrounding a |
| 97 | /// given range. |
| 98 | /// |
| 99 | /// \param Loc The location where we'll emit the diagnostic. |
| 100 | /// \param Loc The kind of diagnostic to emit. |
| 101 | /// \param ParenRange Source range enclosing code that should be parenthesized. |
| 102 | void Parser::SuggestParentheses(SourceLocation Loc, unsigned DK, |
| 103 | SourceRange ParenRange) { |
Douglas Gregor | b2fb6de | 2009-02-27 17:53:17 +0000 | [diff] [blame] | 104 | SourceLocation EndLoc = PP.getLocForEndOfToken(ParenRange.getEnd()); |
| 105 | if (!ParenRange.getEnd().isFileID() || EndLoc.isInvalid()) { |
Douglas Gregor | 4b2d3f7 | 2009-02-26 21:00:50 +0000 | [diff] [blame] | 106 | // We can't display the parentheses, so just dig the |
| 107 | // warning/error and return. |
| 108 | Diag(Loc, DK); |
| 109 | return; |
| 110 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 111 | |
| 112 | Diag(Loc, DK) |
Douglas Gregor | b2fb6de | 2009-02-27 17:53:17 +0000 | [diff] [blame] | 113 | << CodeModificationHint::CreateInsertion(ParenRange.getBegin(), "(") |
| 114 | << CodeModificationHint::CreateInsertion(EndLoc, ")"); |
Douglas Gregor | 4b2d3f7 | 2009-02-26 21:00:50 +0000 | [diff] [blame] | 115 | } |
| 116 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 117 | /// MatchRHSPunctuation - For punctuation with a LHS and RHS (e.g. '['/']'), |
| 118 | /// this helper function matches and consumes the specified RHS token if |
| 119 | /// present. If not present, it emits the specified diagnostic indicating |
| 120 | /// that the parser failed to match the RHS of the token at LHSLoc. LHSName |
| 121 | /// should be the name of the unmatched LHS token. |
| 122 | SourceLocation Parser::MatchRHSPunctuation(tok::TokenKind RHSTok, |
| 123 | SourceLocation LHSLoc) { |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 124 | |
Chris Lattner | 0007322 | 2007-10-09 17:23:58 +0000 | [diff] [blame] | 125 | if (Tok.is(RHSTok)) |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 126 | return ConsumeAnyToken(); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 127 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 128 | SourceLocation R = Tok.getLocation(); |
| 129 | const char *LHSName = "unknown"; |
| 130 | diag::kind DID = diag::err_parse_error; |
| 131 | switch (RHSTok) { |
| 132 | default: break; |
| 133 | case tok::r_paren : LHSName = "("; DID = diag::err_expected_rparen; break; |
| 134 | case tok::r_brace : LHSName = "{"; DID = diag::err_expected_rbrace; break; |
| 135 | case tok::r_square: LHSName = "["; DID = diag::err_expected_rsquare; break; |
| 136 | case tok::greater: LHSName = "<"; DID = diag::err_expected_greater; break; |
| 137 | } |
| 138 | Diag(Tok, DID); |
Chris Lattner | 28eb7e9 | 2008-11-23 23:17:07 +0000 | [diff] [blame] | 139 | Diag(LHSLoc, diag::note_matching) << LHSName; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 140 | SkipUntil(RHSTok); |
| 141 | return R; |
| 142 | } |
| 143 | |
| 144 | /// ExpectAndConsume - The parser expects that 'ExpectedTok' is next in the |
| 145 | /// input. If so, it is consumed and false is returned. |
| 146 | /// |
| 147 | /// If the input is malformed, this emits the specified diagnostic. Next, if |
| 148 | /// SkipToTok is specified, it calls SkipUntil(SkipToTok). Finally, true is |
| 149 | /// returned. |
| 150 | bool Parser::ExpectAndConsume(tok::TokenKind ExpectedTok, unsigned DiagID, |
| 151 | const char *Msg, tok::TokenKind SkipToTok) { |
Chris Lattner | 0007322 | 2007-10-09 17:23:58 +0000 | [diff] [blame] | 152 | if (Tok.is(ExpectedTok)) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 153 | ConsumeAnyToken(); |
| 154 | return false; |
| 155 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 156 | |
Douglas Gregor | 4b2d3f7 | 2009-02-26 21:00:50 +0000 | [diff] [blame] | 157 | const char *Spelling = 0; |
Douglas Gregor | b2fb6de | 2009-02-27 17:53:17 +0000 | [diff] [blame] | 158 | SourceLocation EndLoc = PP.getLocForEndOfToken(PrevTokLocation); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 159 | if (EndLoc.isValid() && |
Douglas Gregor | b2fb6de | 2009-02-27 17:53:17 +0000 | [diff] [blame] | 160 | (Spelling = tok::getTokenSimpleSpelling(ExpectedTok))) { |
Douglas Gregor | 4b2d3f7 | 2009-02-26 21:00:50 +0000 | [diff] [blame] | 161 | // Show what code to insert to fix this problem. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 162 | Diag(EndLoc, DiagID) |
Douglas Gregor | 4b2d3f7 | 2009-02-26 21:00:50 +0000 | [diff] [blame] | 163 | << Msg |
Douglas Gregor | b2fb6de | 2009-02-27 17:53:17 +0000 | [diff] [blame] | 164 | << CodeModificationHint::CreateInsertion(EndLoc, Spelling); |
Douglas Gregor | 4b2d3f7 | 2009-02-26 21:00:50 +0000 | [diff] [blame] | 165 | } else |
| 166 | Diag(Tok, DiagID) << Msg; |
| 167 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 168 | if (SkipToTok != tok::unknown) |
| 169 | SkipUntil(SkipToTok); |
| 170 | return true; |
| 171 | } |
| 172 | |
| 173 | //===----------------------------------------------------------------------===// |
| 174 | // Error recovery. |
| 175 | //===----------------------------------------------------------------------===// |
| 176 | |
| 177 | /// SkipUntil - Read tokens until we get to the specified token, then consume |
Chris Lattner | 012cf46 | 2007-07-24 17:03:04 +0000 | [diff] [blame] | 178 | /// it (unless DontConsume is true). Because we cannot guarantee that the |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 179 | /// token will ever occur, this skips to the next token, or to some likely |
| 180 | /// good stopping point. If StopAtSemi is true, skipping will stop at a ';' |
| 181 | /// character. |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 182 | /// |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 183 | /// If SkipUntil finds the specified token, it returns true, otherwise it |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 184 | /// returns false. |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 185 | bool Parser::SkipUntil(const tok::TokenKind *Toks, unsigned NumToks, |
| 186 | bool StopAtSemi, bool DontConsume) { |
| 187 | // We always want this function to skip at least one token if the first token |
| 188 | // isn't T and if not at EOF. |
| 189 | bool isFirstTokenSkipped = true; |
| 190 | while (1) { |
| 191 | // If we found one of the tokens, stop and return true. |
| 192 | for (unsigned i = 0; i != NumToks; ++i) { |
Chris Lattner | 0007322 | 2007-10-09 17:23:58 +0000 | [diff] [blame] | 193 | if (Tok.is(Toks[i])) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 194 | if (DontConsume) { |
| 195 | // Noop, don't consume the token. |
| 196 | } else { |
| 197 | ConsumeAnyToken(); |
| 198 | } |
| 199 | return true; |
| 200 | } |
| 201 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 202 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 203 | switch (Tok.getKind()) { |
| 204 | case tok::eof: |
| 205 | // Ran out of tokens. |
| 206 | return false; |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 207 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 208 | case tok::l_paren: |
| 209 | // Recursively skip properly-nested parens. |
| 210 | ConsumeParen(); |
| 211 | SkipUntil(tok::r_paren, false); |
| 212 | break; |
| 213 | case tok::l_square: |
| 214 | // Recursively skip properly-nested square brackets. |
| 215 | ConsumeBracket(); |
| 216 | SkipUntil(tok::r_square, false); |
| 217 | break; |
| 218 | case tok::l_brace: |
| 219 | // Recursively skip properly-nested braces. |
| 220 | ConsumeBrace(); |
| 221 | SkipUntil(tok::r_brace, false); |
| 222 | break; |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 223 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 224 | // Okay, we found a ']' or '}' or ')', which we think should be balanced. |
| 225 | // Since the user wasn't looking for this token (if they were, it would |
| 226 | // already be handled), this isn't balanced. If there is a LHS token at a |
| 227 | // higher level, we will assume that this matches the unbalanced token |
| 228 | // and return it. Otherwise, this is a spurious RHS token, which we skip. |
| 229 | case tok::r_paren: |
| 230 | if (ParenCount && !isFirstTokenSkipped) |
| 231 | return false; // Matches something. |
| 232 | ConsumeParen(); |
| 233 | break; |
| 234 | case tok::r_square: |
| 235 | if (BracketCount && !isFirstTokenSkipped) |
| 236 | return false; // Matches something. |
| 237 | ConsumeBracket(); |
| 238 | break; |
| 239 | case tok::r_brace: |
| 240 | if (BraceCount && !isFirstTokenSkipped) |
| 241 | return false; // Matches something. |
| 242 | ConsumeBrace(); |
| 243 | break; |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 244 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 245 | case tok::string_literal: |
| 246 | case tok::wide_string_literal: |
| 247 | ConsumeStringToken(); |
| 248 | break; |
| 249 | case tok::semi: |
| 250 | if (StopAtSemi) |
| 251 | return false; |
| 252 | // FALL THROUGH. |
| 253 | default: |
| 254 | // Skip this token. |
| 255 | ConsumeToken(); |
| 256 | break; |
| 257 | } |
| 258 | isFirstTokenSkipped = false; |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 259 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 260 | } |
| 261 | |
| 262 | //===----------------------------------------------------------------------===// |
| 263 | // Scope manipulation |
| 264 | //===----------------------------------------------------------------------===// |
| 265 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 266 | /// EnterScope - Start a new scope. |
| 267 | void Parser::EnterScope(unsigned ScopeFlags) { |
Chris Lattner | 9e344c6 | 2007-07-15 00:04:39 +0000 | [diff] [blame] | 268 | if (NumCachedScopes) { |
| 269 | Scope *N = ScopeCache[--NumCachedScopes]; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 270 | N->Init(CurScope, ScopeFlags); |
| 271 | CurScope = N; |
| 272 | } else { |
| 273 | CurScope = new Scope(CurScope, ScopeFlags); |
| 274 | } |
| 275 | } |
| 276 | |
| 277 | /// ExitScope - Pop a scope off the scope stack. |
| 278 | void Parser::ExitScope() { |
| 279 | assert(CurScope && "Scope imbalance!"); |
| 280 | |
Chris Lattner | 90ae68a | 2007-10-09 20:37:18 +0000 | [diff] [blame] | 281 | // Inform the actions module that this scope is going away if there are any |
| 282 | // decls in it. |
| 283 | if (!CurScope->decl_empty()) |
Steve Naroff | b216c88 | 2007-10-09 22:01:59 +0000 | [diff] [blame] | 284 | Actions.ActOnPopScope(Tok.getLocation(), CurScope); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 285 | |
Chris Lattner | 9e344c6 | 2007-07-15 00:04:39 +0000 | [diff] [blame] | 286 | Scope *OldScope = CurScope; |
| 287 | CurScope = OldScope->getParent(); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 288 | |
Chris Lattner | 9e344c6 | 2007-07-15 00:04:39 +0000 | [diff] [blame] | 289 | if (NumCachedScopes == ScopeCacheSize) |
| 290 | delete OldScope; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 291 | else |
Chris Lattner | 9e344c6 | 2007-07-15 00:04:39 +0000 | [diff] [blame] | 292 | ScopeCache[NumCachedScopes++] = OldScope; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 293 | } |
| 294 | |
| 295 | |
| 296 | |
| 297 | |
| 298 | //===----------------------------------------------------------------------===// |
| 299 | // C99 6.9: External Definitions. |
| 300 | //===----------------------------------------------------------------------===// |
| 301 | |
| 302 | Parser::~Parser() { |
| 303 | // If we still have scopes active, delete the scope tree. |
| 304 | delete CurScope; |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 305 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 306 | // Free the scope cache. |
Chris Lattner | 9e344c6 | 2007-07-15 00:04:39 +0000 | [diff] [blame] | 307 | for (unsigned i = 0, e = NumCachedScopes; i != e; ++i) |
| 308 | delete ScopeCache[i]; |
Daniel Dunbar | fcdd8fe | 2008-10-04 19:21:03 +0000 | [diff] [blame] | 309 | |
| 310 | // Remove the pragma handlers we installed. |
Ted Kremenek | 4726d03 | 2009-03-23 22:28:25 +0000 | [diff] [blame] | 311 | PP.RemovePragmaHandler(0, PackHandler.get()); |
| 312 | PackHandler.reset(); |
| 313 | PP.RemovePragmaHandler(0, UnusedHandler.get()); |
| 314 | UnusedHandler.reset(); |
Eli Friedman | 9991479 | 2009-06-05 00:49:58 +0000 | [diff] [blame] | 315 | PP.RemovePragmaHandler(0, WeakHandler.get()); |
| 316 | WeakHandler.reset(); |
Douglas Gregor | 2e22253 | 2009-07-02 17:08:52 +0000 | [diff] [blame] | 317 | PP.RemoveCommentHandler(CommentHandler.get()); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 318 | } |
| 319 | |
| 320 | /// Initialize - Warm up the parser. |
| 321 | /// |
| 322 | void Parser::Initialize() { |
| 323 | // Prime the lexer look-ahead. |
| 324 | ConsumeToken(); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 325 | |
Chris Lattner | 31e0572 | 2007-08-26 06:24:45 +0000 | [diff] [blame] | 326 | // Create the translation unit scope. Install it as the current scope. |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 327 | assert(CurScope == 0 && "A scope is already active?"); |
Chris Lattner | 31e0572 | 2007-08-26 06:24:45 +0000 | [diff] [blame] | 328 | EnterScope(Scope::DeclScope); |
Steve Naroff | b216c88 | 2007-10-09 22:01:59 +0000 | [diff] [blame] | 329 | Actions.ActOnTranslationUnitScope(Tok.getLocation(), CurScope); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 330 | |
Chris Lattner | 0007322 | 2007-10-09 17:23:58 +0000 | [diff] [blame] | 331 | if (Tok.is(tok::eof) && |
Chris Lattner | f726175 | 2007-08-25 05:47:03 +0000 | [diff] [blame] | 332 | !getLang().CPlusPlus) // Empty source file is an extension in C |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 333 | Diag(Tok, diag::ext_empty_source_file); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 334 | |
Chris Lattner | 34870da | 2007-08-29 22:54:08 +0000 | [diff] [blame] | 335 | // Initialization for Objective-C context sensitive keywords recognition. |
Ted Kremenek | a526c5c | 2008-01-07 19:49:32 +0000 | [diff] [blame] | 336 | // Referenced in Parser::ParseObjCTypeQualifierList. |
Chris Lattner | 34870da | 2007-08-29 22:54:08 +0000 | [diff] [blame] | 337 | if (getLang().ObjC1) { |
Ted Kremenek | a526c5c | 2008-01-07 19:49:32 +0000 | [diff] [blame] | 338 | ObjCTypeQuals[objc_in] = &PP.getIdentifierTable().get("in"); |
| 339 | ObjCTypeQuals[objc_out] = &PP.getIdentifierTable().get("out"); |
| 340 | ObjCTypeQuals[objc_inout] = &PP.getIdentifierTable().get("inout"); |
| 341 | ObjCTypeQuals[objc_oneway] = &PP.getIdentifierTable().get("oneway"); |
| 342 | ObjCTypeQuals[objc_bycopy] = &PP.getIdentifierTable().get("bycopy"); |
| 343 | ObjCTypeQuals[objc_byref] = &PP.getIdentifierTable().get("byref"); |
Chris Lattner | 34870da | 2007-08-29 22:54:08 +0000 | [diff] [blame] | 344 | } |
Daniel Dunbar | 662e8b5 | 2008-08-14 22:04:54 +0000 | [diff] [blame] | 345 | |
| 346 | Ident_super = &PP.getIdentifierTable().get("super"); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 347 | } |
| 348 | |
| 349 | /// ParseTopLevelDecl - Parse one top-level declaration, return whatever the |
| 350 | /// action tells us to. This returns true if the EOF was encountered. |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 351 | bool Parser::ParseTopLevelDecl(DeclGroupPtrTy &Result) { |
| 352 | Result = DeclGroupPtrTy(); |
Chris Lattner | 9299f3f | 2008-08-23 03:19:52 +0000 | [diff] [blame] | 353 | if (Tok.is(tok::eof)) { |
| 354 | Actions.ActOnEndOfTranslationUnit(); |
| 355 | return true; |
| 356 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 357 | |
Sean Hunt | bbd37c6 | 2009-11-21 08:43:09 +0000 | [diff] [blame] | 358 | CXX0XAttributeList Attr; |
| 359 | if (getLang().CPlusPlus0x && isCXX0XAttributeSpecifier()) |
| 360 | Attr = ParseCXX0XAttributes(); |
| 361 | Result = ParseExternalDeclaration(Attr); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 362 | return false; |
| 363 | } |
| 364 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 365 | /// ParseTranslationUnit: |
| 366 | /// translation-unit: [C99 6.9] |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 367 | /// external-declaration |
| 368 | /// translation-unit external-declaration |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 369 | void Parser::ParseTranslationUnit() { |
Douglas Gregor | 8935b8b | 2008-12-10 06:34:36 +0000 | [diff] [blame] | 370 | Initialize(); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 371 | |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 372 | DeclGroupPtrTy Res; |
Steve Naroff | 89307ff | 2007-11-29 23:05:20 +0000 | [diff] [blame] | 373 | while (!ParseTopLevelDecl(Res)) |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 374 | /*parse them all*/; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 375 | |
Chris Lattner | 06f5485 | 2008-08-23 02:00:52 +0000 | [diff] [blame] | 376 | ExitScope(); |
| 377 | assert(CurScope == 0 && "Scope imbalance!"); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 378 | } |
| 379 | |
| 380 | /// ParseExternalDeclaration: |
Chris Lattner | 90b93d6 | 2008-12-08 21:59:01 +0000 | [diff] [blame] | 381 | /// |
Douglas Gregor | c19923d | 2008-11-21 16:10:08 +0000 | [diff] [blame] | 382 | /// external-declaration: [C99 6.9], declaration: [C++ dcl.dcl] |
Chris Lattner | c301815 | 2007-08-10 20:57:02 +0000 | [diff] [blame] | 383 | /// function-definition |
| 384 | /// declaration |
Douglas Gregor | a1d71ae | 2009-08-24 12:17:54 +0000 | [diff] [blame] | 385 | /// [C++0x] empty-declaration |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 386 | /// [GNU] asm-definition |
Chris Lattner | c301815 | 2007-08-10 20:57:02 +0000 | [diff] [blame] | 387 | /// [GNU] __extension__ external-declaration |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 388 | /// [OBJC] objc-class-definition |
| 389 | /// [OBJC] objc-class-declaration |
| 390 | /// [OBJC] objc-alias-declaration |
| 391 | /// [OBJC] objc-protocol-definition |
| 392 | /// [OBJC] objc-method-definition |
| 393 | /// [OBJC] @end |
Douglas Gregor | c19923d | 2008-11-21 16:10:08 +0000 | [diff] [blame] | 394 | /// [C++] linkage-specification |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 395 | /// [GNU] asm-definition: |
| 396 | /// simple-asm-expr ';' |
| 397 | /// |
Douglas Gregor | a1d71ae | 2009-08-24 12:17:54 +0000 | [diff] [blame] | 398 | /// [C++0x] empty-declaration: |
| 399 | /// ';' |
| 400 | /// |
Douglas Gregor | 45f9655 | 2009-09-04 06:33:52 +0000 | [diff] [blame] | 401 | /// [C++0x/GNU] 'extern' 'template' declaration |
Sean Hunt | bbd37c6 | 2009-11-21 08:43:09 +0000 | [diff] [blame] | 402 | Parser::DeclGroupPtrTy Parser::ParseExternalDeclaration(CXX0XAttributeList Attr) { |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 403 | DeclPtrTy SingleDecl; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 404 | switch (Tok.getKind()) { |
| 405 | case tok::semi: |
Douglas Gregor | a1d71ae | 2009-08-24 12:17:54 +0000 | [diff] [blame] | 406 | if (!getLang().CPlusPlus0x) |
| 407 | Diag(Tok, diag::ext_top_level_semi) |
Chris Lattner | 29d9c1a | 2009-12-06 17:36:05 +0000 | [diff] [blame] | 408 | << CodeModificationHint::CreateRemoval(Tok.getLocation()); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 409 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 410 | ConsumeToken(); |
| 411 | // TODO: Invoke action for top-level semicolon. |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 412 | return DeclGroupPtrTy(); |
Chris Lattner | 90b93d6 | 2008-12-08 21:59:01 +0000 | [diff] [blame] | 413 | case tok::r_brace: |
| 414 | Diag(Tok, diag::err_expected_external_declaration); |
| 415 | ConsumeBrace(); |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 416 | return DeclGroupPtrTy(); |
Chris Lattner | 90b93d6 | 2008-12-08 21:59:01 +0000 | [diff] [blame] | 417 | case tok::eof: |
| 418 | Diag(Tok, diag::err_expected_external_declaration); |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 419 | return DeclGroupPtrTy(); |
Chris Lattner | c301815 | 2007-08-10 20:57:02 +0000 | [diff] [blame] | 420 | case tok::kw___extension__: { |
Chris Lattner | c46d1a1 | 2008-10-20 06:45:43 +0000 | [diff] [blame] | 421 | // __extension__ silences extension warnings in the subexpression. |
| 422 | ExtensionRAIIObject O(Diags); // Use RAII to do this. |
Chris Lattner | 39146d6 | 2008-10-20 06:51:33 +0000 | [diff] [blame] | 423 | ConsumeToken(); |
Sean Hunt | bbd37c6 | 2009-11-21 08:43:09 +0000 | [diff] [blame] | 424 | return ParseExternalDeclaration(Attr); |
Chris Lattner | c301815 | 2007-08-10 20:57:02 +0000 | [diff] [blame] | 425 | } |
Anders Carlsson | dfab6cb | 2008-02-08 00:33:21 +0000 | [diff] [blame] | 426 | case tok::kw_asm: { |
Sean Hunt | bbd37c6 | 2009-11-21 08:43:09 +0000 | [diff] [blame] | 427 | if (Attr.HasAttr) |
| 428 | Diag(Attr.Range.getBegin(), diag::err_attributes_not_allowed) |
| 429 | << Attr.Range; |
| 430 | |
Sebastian Redl | effa8d1 | 2008-12-10 00:02:53 +0000 | [diff] [blame] | 431 | OwningExprResult Result(ParseSimpleAsm()); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 432 | |
Anders Carlsson | 3f9424f | 2008-02-08 00:23:11 +0000 | [diff] [blame] | 433 | ExpectAndConsume(tok::semi, diag::err_expected_semi_after, |
| 434 | "top-level asm block"); |
Anders Carlsson | dfab6cb | 2008-02-08 00:33:21 +0000 | [diff] [blame] | 435 | |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 436 | if (Result.isInvalid()) |
| 437 | return DeclGroupPtrTy(); |
| 438 | SingleDecl = Actions.ActOnFileScopeAsmDecl(Tok.getLocation(), move(Result)); |
| 439 | break; |
Anders Carlsson | dfab6cb | 2008-02-08 00:33:21 +0000 | [diff] [blame] | 440 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 441 | case tok::at: |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 442 | // @ is not a legal token unless objc is enabled, no need to check for ObjC. |
| 443 | /// FIXME: ParseObjCAtDirectives should return a DeclGroup for things like |
| 444 | /// @class foo, bar; |
| 445 | SingleDecl = ParseObjCAtDirectives(); |
| 446 | break; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 447 | case tok::minus: |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 448 | case tok::plus: |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 449 | if (!getLang().ObjC1) { |
| 450 | Diag(Tok, diag::err_expected_external_declaration); |
| 451 | ConsumeToken(); |
| 452 | return DeclGroupPtrTy(); |
| 453 | } |
| 454 | SingleDecl = ParseObjCMethodDefinition(); |
| 455 | break; |
Douglas Gregor | 791215b | 2009-09-21 20:51:25 +0000 | [diff] [blame] | 456 | case tok::code_completion: |
| 457 | Actions.CodeCompleteOrdinaryName(CurScope); |
| 458 | ConsumeToken(); |
Sean Hunt | bbd37c6 | 2009-11-21 08:43:09 +0000 | [diff] [blame] | 459 | return ParseExternalDeclaration(Attr); |
Douglas Gregor | f780abc | 2008-12-30 03:27:21 +0000 | [diff] [blame] | 460 | case tok::kw_using: |
Chris Lattner | 8f08cb7 | 2007-08-25 06:57:03 +0000 | [diff] [blame] | 461 | case tok::kw_namespace: |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 462 | case tok::kw_typedef: |
Douglas Gregor | adcac88 | 2008-12-01 23:54:00 +0000 | [diff] [blame] | 463 | case tok::kw_template: |
| 464 | case tok::kw_export: // As in 'export template' |
Anders Carlsson | 511d7ab | 2009-03-11 16:27:10 +0000 | [diff] [blame] | 465 | case tok::kw_static_assert: |
Chris Lattner | bae3511 | 2007-08-25 18:15:16 +0000 | [diff] [blame] | 466 | // A function definition cannot start with a these keywords. |
Chris Lattner | 97144fc | 2009-04-02 04:16:50 +0000 | [diff] [blame] | 467 | { |
| 468 | SourceLocation DeclEnd; |
Sean Hunt | bbd37c6 | 2009-11-21 08:43:09 +0000 | [diff] [blame] | 469 | return ParseDeclaration(Declarator::FileContext, DeclEnd, Attr); |
Chris Lattner | 97144fc | 2009-04-02 04:16:50 +0000 | [diff] [blame] | 470 | } |
Douglas Gregor | 45f9655 | 2009-09-04 06:33:52 +0000 | [diff] [blame] | 471 | case tok::kw_extern: |
| 472 | if (getLang().CPlusPlus && NextToken().is(tok::kw_template)) { |
| 473 | // Extern templates |
| 474 | SourceLocation ExternLoc = ConsumeToken(); |
| 475 | SourceLocation TemplateLoc = ConsumeToken(); |
| 476 | SourceLocation DeclEnd; |
| 477 | return Actions.ConvertDeclToDeclGroup( |
| 478 | ParseExplicitInstantiation(ExternLoc, TemplateLoc, DeclEnd)); |
| 479 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 480 | |
Douglas Gregor | 45f9655 | 2009-09-04 06:33:52 +0000 | [diff] [blame] | 481 | // FIXME: Detect C++ linkage specifications here? |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 482 | |
Douglas Gregor | 45f9655 | 2009-09-04 06:33:52 +0000 | [diff] [blame] | 483 | // Fall through to handle other declarations or function definitions. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 484 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 485 | default: |
| 486 | // We can't tell whether this is a function-definition or declaration yet. |
Sean Hunt | bbd37c6 | 2009-11-21 08:43:09 +0000 | [diff] [blame] | 487 | return ParseDeclarationOrFunctionDefinition(Attr.AttrList); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 488 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 489 | |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 490 | // This routine returns a DeclGroup, if the thing we parsed only contains a |
| 491 | // single decl, convert it now. |
| 492 | return Actions.ConvertDeclToDeclGroup(SingleDecl); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 493 | } |
| 494 | |
Douglas Gregor | 1426e53 | 2009-05-12 21:31:51 +0000 | [diff] [blame] | 495 | /// \brief Determine whether the current token, if it occurs after a |
| 496 | /// declarator, continues a declaration or declaration list. |
| 497 | bool Parser::isDeclarationAfterDeclarator() { |
| 498 | return Tok.is(tok::equal) || // int X()= -> not a function def |
| 499 | Tok.is(tok::comma) || // int X(), -> not a function def |
| 500 | Tok.is(tok::semi) || // int X(); -> not a function def |
| 501 | Tok.is(tok::kw_asm) || // int X() __asm__ -> not a function def |
| 502 | Tok.is(tok::kw___attribute) || // int X() __attr__ -> not a function def |
| 503 | (getLang().CPlusPlus && |
| 504 | Tok.is(tok::l_paren)); // int X(0) -> not a function def [C++] |
| 505 | } |
| 506 | |
| 507 | /// \brief Determine whether the current token, if it occurs after a |
| 508 | /// declarator, indicates the start of a function definition. |
| 509 | bool Parser::isStartOfFunctionDefinition() { |
Chris Lattner | 5d1c619 | 2009-12-06 18:34:27 +0000 | [diff] [blame] | 510 | if (Tok.is(tok::l_brace)) // int X() {} |
| 511 | return true; |
| 512 | |
| 513 | if (!getLang().CPlusPlus) |
| 514 | return isDeclarationSpecifier(); // int X(f) int f; {} |
| 515 | return Tok.is(tok::colon) || // X() : Base() {} (used for ctors) |
| 516 | Tok.is(tok::kw_try); // X() try { ... } |
Douglas Gregor | 1426e53 | 2009-05-12 21:31:51 +0000 | [diff] [blame] | 517 | } |
| 518 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 519 | /// ParseDeclarationOrFunctionDefinition - Parse either a function-definition or |
| 520 | /// 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] | 521 | /// compound-statement in function-definition. TemplateParams, if |
| 522 | /// non-NULL, provides the template parameters when we're parsing a |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 523 | /// C++ template-declaration. |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 524 | /// |
| 525 | /// function-definition: [C99 6.9.1] |
Chris Lattner | a798ebc | 2008-04-05 05:52:15 +0000 | [diff] [blame] | 526 | /// decl-specs declarator declaration-list[opt] compound-statement |
| 527 | /// [C90] function-definition: [C99 6.7.1] - implicit int result |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 528 | /// [C90] decl-specs[opt] declarator declaration-list[opt] compound-statement |
Chris Lattner | a798ebc | 2008-04-05 05:52:15 +0000 | [diff] [blame] | 529 | /// |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 530 | /// declaration: [C99 6.7] |
Chris Lattner | 697e15f | 2007-08-22 06:06:56 +0000 | [diff] [blame] | 531 | /// declaration-specifiers init-declarator-list[opt] ';' |
| 532 | /// [!C99] init-declarator-list ';' [TODO: warn in c99 mode] |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 533 | /// [OMP] threadprivate-directive [TODO] |
| 534 | /// |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 535 | Parser::DeclGroupPtrTy |
Fariborz Jahanian | 3acd9aa | 2009-12-09 21:39:38 +0000 | [diff] [blame] | 536 | Parser::ParseDeclarationOrFunctionDefinition(ParsingDeclSpec &DS, |
| 537 | AttributeList *Attr, |
Sean Hunt | bbd37c6 | 2009-11-21 08:43:09 +0000 | [diff] [blame] | 538 | AccessSpecifier AS) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 539 | // Parse the common declaration-specifiers piece. |
Sean Hunt | bbd37c6 | 2009-11-21 08:43:09 +0000 | [diff] [blame] | 540 | if (Attr) |
| 541 | DS.AddAttributes(Attr); |
| 542 | |
Douglas Gregor | 4d9a16f | 2009-05-12 23:25:50 +0000 | [diff] [blame] | 543 | ParseDeclarationSpecifiers(DS, ParsedTemplateInfo(), AS); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 544 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 545 | // C99 6.7.2.3p6: Handle "struct-or-union identifier;", "enum { X };" |
| 546 | // declaration-specifiers init-declarator-list[opt] ';' |
Chris Lattner | 0007322 | 2007-10-09 17:23:58 +0000 | [diff] [blame] | 547 | if (Tok.is(tok::semi)) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 548 | ConsumeToken(); |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 549 | DeclPtrTy TheDecl = Actions.ParsedFreeStandingDeclSpec(CurScope, DS); |
John McCall | 54abf7d | 2009-11-04 02:18:39 +0000 | [diff] [blame] | 550 | DS.complete(TheDecl); |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 551 | return Actions.ConvertDeclToDeclGroup(TheDecl); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 552 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 553 | |
Daniel Dunbar | 246e70f | 2008-09-26 04:48:09 +0000 | [diff] [blame] | 554 | // ObjC2 allows prefix attributes on class interfaces and protocols. |
| 555 | // FIXME: This still needs better diagnostics. We should only accept |
| 556 | // attributes here, no types, etc. |
Chris Lattner | 0007322 | 2007-10-09 17:23:58 +0000 | [diff] [blame] | 557 | if (getLang().ObjC2 && Tok.is(tok::at)) { |
Steve Naroff | dac269b | 2007-08-20 21:31:48 +0000 | [diff] [blame] | 558 | SourceLocation AtLoc = ConsumeToken(); // the "@" |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 559 | if (!Tok.isObjCAtKeyword(tok::objc_interface) && |
Daniel Dunbar | 246e70f | 2008-09-26 04:48:09 +0000 | [diff] [blame] | 560 | !Tok.isObjCAtKeyword(tok::objc_protocol)) { |
| 561 | Diag(Tok, diag::err_objc_unexpected_attr); |
Chris Lattner | cb53b36 | 2007-12-27 19:57:00 +0000 | [diff] [blame] | 562 | SkipUntil(tok::semi); // FIXME: better skip? |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 563 | return DeclGroupPtrTy(); |
Chris Lattner | cb53b36 | 2007-12-27 19:57:00 +0000 | [diff] [blame] | 564 | } |
John McCall | d8ac057 | 2009-11-03 19:26:08 +0000 | [diff] [blame] | 565 | |
John McCall | 54abf7d | 2009-11-04 02:18:39 +0000 | [diff] [blame] | 566 | DS.abort(); |
| 567 | |
Fariborz Jahanian | 0de2ae2 | 2008-01-02 19:17:38 +0000 | [diff] [blame] | 568 | const char *PrevSpec = 0; |
John McCall | fec5401 | 2009-08-03 20:12:06 +0000 | [diff] [blame] | 569 | unsigned DiagID; |
| 570 | if (DS.SetTypeSpecType(DeclSpec::TST_unspecified, AtLoc, PrevSpec, DiagID)) |
| 571 | Diag(AtLoc, DiagID) << PrevSpec; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 572 | |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 573 | DeclPtrTy TheDecl; |
Daniel Dunbar | 246e70f | 2008-09-26 04:48:09 +0000 | [diff] [blame] | 574 | if (Tok.isObjCAtKeyword(tok::objc_protocol)) |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 575 | TheDecl = ParseObjCAtProtocolDeclaration(AtLoc, DS.getAttributes()); |
| 576 | else |
| 577 | TheDecl = ParseObjCAtInterfaceDeclaration(AtLoc, DS.getAttributes()); |
| 578 | return Actions.ConvertDeclToDeclGroup(TheDecl); |
Steve Naroff | dac269b | 2007-08-20 21:31:48 +0000 | [diff] [blame] | 579 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 580 | |
Chris Lattner | c6fdc34 | 2008-01-12 07:05:38 +0000 | [diff] [blame] | 581 | // If the declspec consisted only of 'extern' and we have a string |
| 582 | // literal following it, this must be a C++ linkage specifier like |
| 583 | // 'extern "C"'. |
Chris Lattner | 3c6f6a7 | 2008-01-12 07:08:43 +0000 | [diff] [blame] | 584 | if (Tok.is(tok::string_literal) && getLang().CPlusPlus && |
Chris Lattner | c6fdc34 | 2008-01-12 07:05:38 +0000 | [diff] [blame] | 585 | DS.getStorageClassSpec() == DeclSpec::SCS_extern && |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 586 | DS.getParsedSpecifiers() == DeclSpec::PQ_StorageClassSpecifier) { |
John McCall | 54abf7d | 2009-11-04 02:18:39 +0000 | [diff] [blame] | 587 | DS.abort(); |
Fariborz Jahanian | 3acd9aa | 2009-12-09 21:39:38 +0000 | [diff] [blame] | 588 | DeclPtrTy TheDecl = ParseLinkage(DS, Declarator::FileContext); |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 589 | return Actions.ConvertDeclToDeclGroup(TheDecl); |
| 590 | } |
Chris Lattner | c6fdc34 | 2008-01-12 07:05:38 +0000 | [diff] [blame] | 591 | |
John McCall | d8ac057 | 2009-11-03 19:26:08 +0000 | [diff] [blame] | 592 | return ParseDeclGroup(DS, Declarator::FileContext, true); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 593 | } |
| 594 | |
Fariborz Jahanian | 3acd9aa | 2009-12-09 21:39:38 +0000 | [diff] [blame] | 595 | Parser::DeclGroupPtrTy |
| 596 | Parser::ParseDeclarationOrFunctionDefinition(AttributeList *Attr, |
| 597 | AccessSpecifier AS) { |
| 598 | ParsingDeclSpec DS(*this); |
| 599 | return ParseDeclarationOrFunctionDefinition(DS, Attr, AS); |
| 600 | } |
| 601 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 602 | /// ParseFunctionDefinition - We parsed and verified that the specified |
| 603 | /// Declarator is well formed. If this is a K&R-style function, read the |
| 604 | /// parameters declaration-list, then start the compound-statement. |
| 605 | /// |
Chris Lattner | a798ebc | 2008-04-05 05:52:15 +0000 | [diff] [blame] | 606 | /// function-definition: [C99 6.9.1] |
| 607 | /// decl-specs declarator declaration-list[opt] compound-statement |
| 608 | /// [C90] function-definition: [C99 6.7.1] - implicit int result |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 609 | /// [C90] decl-specs[opt] declarator declaration-list[opt] compound-statement |
Douglas Gregor | 7ad8390 | 2008-11-05 04:29:56 +0000 | [diff] [blame] | 610 | /// [C++] function-definition: [C++ 8.4] |
Chris Lattner | 23c4b18 | 2009-03-29 17:18:04 +0000 | [diff] [blame] | 611 | /// decl-specifier-seq[opt] declarator ctor-initializer[opt] |
| 612 | /// function-body |
Douglas Gregor | 7ad8390 | 2008-11-05 04:29:56 +0000 | [diff] [blame] | 613 | /// [C++] function-definition: [C++ 8.4] |
Sebastian Redl | d3a413d | 2009-04-26 20:35:05 +0000 | [diff] [blame] | 614 | /// decl-specifier-seq[opt] declarator function-try-block |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 615 | /// |
John McCall | 54abf7d | 2009-11-04 02:18:39 +0000 | [diff] [blame] | 616 | Parser::DeclPtrTy Parser::ParseFunctionDefinition(ParsingDeclarator &D, |
Douglas Gregor | 52591bf | 2009-06-24 00:54:41 +0000 | [diff] [blame] | 617 | const ParsedTemplateInfo &TemplateInfo) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 618 | const DeclaratorChunk &FnTypeInfo = D.getTypeObject(0); |
| 619 | assert(FnTypeInfo.Kind == DeclaratorChunk::Function && |
| 620 | "This isn't a function declarator!"); |
| 621 | const DeclaratorChunk::FunctionTypeInfo &FTI = FnTypeInfo.Fun; |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 622 | |
Chris Lattner | a798ebc | 2008-04-05 05:52:15 +0000 | [diff] [blame] | 623 | // If this is C90 and the declspecs were completely missing, fudge in an |
| 624 | // implicit int. We do this here because this is the only place where |
| 625 | // declaration-specifiers are completely optional in the grammar. |
Chris Lattner | 2a327d1 | 2009-02-27 18:35:46 +0000 | [diff] [blame] | 626 | if (getLang().ImplicitInt && D.getDeclSpec().isEmpty()) { |
Chris Lattner | a798ebc | 2008-04-05 05:52:15 +0000 | [diff] [blame] | 627 | const char *PrevSpec; |
John McCall | fec5401 | 2009-08-03 20:12:06 +0000 | [diff] [blame] | 628 | unsigned DiagID; |
Chris Lattner | 31c2868 | 2008-10-20 02:01:34 +0000 | [diff] [blame] | 629 | D.getMutableDeclSpec().SetTypeSpecType(DeclSpec::TST_int, |
| 630 | D.getIdentifierLoc(), |
John McCall | fec5401 | 2009-08-03 20:12:06 +0000 | [diff] [blame] | 631 | PrevSpec, DiagID); |
Sebastian Redl | ab197ba | 2009-02-09 18:23:29 +0000 | [diff] [blame] | 632 | D.SetRangeBegin(D.getDeclSpec().getSourceRange().getBegin()); |
Chris Lattner | a798ebc | 2008-04-05 05:52:15 +0000 | [diff] [blame] | 633 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 634 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 635 | // If this declaration was formed with a K&R-style identifier list for the |
| 636 | // arguments, parse declarations for all of the args next. |
| 637 | // int foo(a,b) int a; float b; {} |
| 638 | if (!FTI.hasPrototype && FTI.NumArgs != 0) |
| 639 | ParseKNRParamDeclarations(D); |
| 640 | |
Douglas Gregor | 7ad8390 | 2008-11-05 04:29:56 +0000 | [diff] [blame] | 641 | // We should have either an opening brace or, in a C++ constructor, |
| 642 | // we may have a colon. |
Sebastian Redl | d3a413d | 2009-04-26 20:35:05 +0000 | [diff] [blame] | 643 | if (Tok.isNot(tok::l_brace) && Tok.isNot(tok::colon) && |
| 644 | Tok.isNot(tok::kw_try)) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 645 | Diag(Tok, diag::err_expected_fn_body); |
| 646 | |
| 647 | // Skip over garbage, until we get to '{'. Don't eat the '{'. |
| 648 | SkipUntil(tok::l_brace, true, true); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 649 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 650 | // If we didn't find the '{', bail out. |
Chris Lattner | 0007322 | 2007-10-09 17:23:58 +0000 | [diff] [blame] | 651 | if (Tok.isNot(tok::l_brace)) |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 652 | return DeclPtrTy(); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 653 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 654 | |
Chris Lattner | b652cea | 2007-10-09 17:14:05 +0000 | [diff] [blame] | 655 | // Enter a scope for the function body. |
Douglas Gregor | 8935b8b | 2008-12-10 06:34:36 +0000 | [diff] [blame] | 656 | ParseScope BodyScope(this, Scope::FnScope|Scope::DeclScope); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 657 | |
Chris Lattner | b652cea | 2007-10-09 17:14:05 +0000 | [diff] [blame] | 658 | // Tell the actions module that we have entered a function definition with the |
| 659 | // specified Declarator for the function. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 660 | DeclPtrTy Res = TemplateInfo.TemplateParams? |
Douglas Gregor | 52591bf | 2009-06-24 00:54:41 +0000 | [diff] [blame] | 661 | Actions.ActOnStartOfFunctionTemplateDef(CurScope, |
| 662 | Action::MultiTemplateParamsArg(Actions, |
| 663 | TemplateInfo.TemplateParams->data(), |
| 664 | TemplateInfo.TemplateParams->size()), |
| 665 | D) |
| 666 | : Actions.ActOnStartOfFunctionDef(CurScope, D); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 667 | |
John McCall | 54abf7d | 2009-11-04 02:18:39 +0000 | [diff] [blame] | 668 | // Break out of the ParsingDeclarator context before we parse the body. |
| 669 | D.complete(Res); |
| 670 | |
| 671 | // Break out of the ParsingDeclSpec context, too. This const_cast is |
| 672 | // safe because we're always the sole owner. |
| 673 | D.getMutableDeclSpec().abort(); |
| 674 | |
Sebastian Redl | d3a413d | 2009-04-26 20:35:05 +0000 | [diff] [blame] | 675 | if (Tok.is(tok::kw_try)) |
| 676 | return ParseFunctionTryBlock(Res); |
| 677 | |
Douglas Gregor | 7ad8390 | 2008-11-05 04:29:56 +0000 | [diff] [blame] | 678 | // If we have a colon, then we're probably parsing a C++ |
| 679 | // ctor-initializer. |
| 680 | if (Tok.is(tok::colon)) |
| 681 | ParseConstructorInitializer(Res); |
Fariborz Jahanian | 0849d38 | 2009-07-14 20:06:22 +0000 | [diff] [blame] | 682 | else |
Fariborz Jahanian | 393612e | 2009-07-21 22:36:06 +0000 | [diff] [blame] | 683 | Actions.ActOnDefaultCtorInitializers(Res); |
Douglas Gregor | 7ad8390 | 2008-11-05 04:29:56 +0000 | [diff] [blame] | 684 | |
Chris Lattner | 40e9bc8 | 2009-03-05 00:49:17 +0000 | [diff] [blame] | 685 | return ParseFunctionStatementBody(Res); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 686 | } |
| 687 | |
| 688 | /// ParseKNRParamDeclarations - Parse 'declaration-list[opt]' which provides |
| 689 | /// types for a function with a K&R-style identifier list for arguments. |
| 690 | void Parser::ParseKNRParamDeclarations(Declarator &D) { |
| 691 | // We know that the top-level of this declarator is a function. |
| 692 | DeclaratorChunk::FunctionTypeInfo &FTI = D.getTypeObject(0).Fun; |
| 693 | |
Chris Lattner | 0442108 | 2008-04-08 04:40:51 +0000 | [diff] [blame] | 694 | // Enter function-declaration scope, limiting any declarators to the |
| 695 | // function prototype scope, including parameter declarators. |
Douglas Gregor | 3218c4b | 2009-01-09 22:42:13 +0000 | [diff] [blame] | 696 | ParseScope PrototypeScope(this, Scope::FunctionPrototypeScope|Scope::DeclScope); |
Chris Lattner | 0442108 | 2008-04-08 04:40:51 +0000 | [diff] [blame] | 697 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 698 | // Read all the argument declarations. |
| 699 | while (isDeclarationSpecifier()) { |
| 700 | SourceLocation DSStart = Tok.getLocation(); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 701 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 702 | // Parse the common declaration-specifiers piece. |
| 703 | DeclSpec DS; |
| 704 | ParseDeclarationSpecifiers(DS); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 705 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 706 | // C99 6.9.1p6: 'each declaration in the declaration list shall have at |
| 707 | // least one declarator'. |
| 708 | // NOTE: GCC just makes this an ext-warn. It's not clear what it does with |
| 709 | // the declarations though. It's trivial to ignore them, really hard to do |
| 710 | // anything else with them. |
Chris Lattner | 0007322 | 2007-10-09 17:23:58 +0000 | [diff] [blame] | 711 | if (Tok.is(tok::semi)) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 712 | Diag(DSStart, diag::err_declaration_does_not_declare_param); |
| 713 | ConsumeToken(); |
| 714 | continue; |
| 715 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 716 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 717 | // C99 6.9.1p6: Declarations shall contain no storage-class specifiers other |
| 718 | // than register. |
| 719 | if (DS.getStorageClassSpec() != DeclSpec::SCS_unspecified && |
| 720 | DS.getStorageClassSpec() != DeclSpec::SCS_register) { |
| 721 | Diag(DS.getStorageClassSpecLoc(), |
| 722 | diag::err_invalid_storage_class_in_func_decl); |
| 723 | DS.ClearStorageClassSpecs(); |
| 724 | } |
| 725 | if (DS.isThreadSpecified()) { |
| 726 | Diag(DS.getThreadSpecLoc(), |
| 727 | diag::err_invalid_storage_class_in_func_decl); |
| 728 | DS.ClearStorageClassSpecs(); |
| 729 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 730 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 731 | // Parse the first declarator attached to this declspec. |
| 732 | Declarator ParmDeclarator(DS, Declarator::KNRTypeListContext); |
| 733 | ParseDeclarator(ParmDeclarator); |
| 734 | |
| 735 | // Handle the full declarator list. |
| 736 | while (1) { |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 737 | Action::AttrTy *AttrList; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 738 | // If attributes are present, parse them. |
Chris Lattner | 0007322 | 2007-10-09 17:23:58 +0000 | [diff] [blame] | 739 | if (Tok.is(tok::kw___attribute)) |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 740 | // FIXME: attach attributes too. |
Sean Hunt | bbd37c6 | 2009-11-21 08:43:09 +0000 | [diff] [blame] | 741 | AttrList = ParseGNUAttributes(); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 742 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 743 | // Ask the actions module to compute the type for this declarator. |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 744 | Action::DeclPtrTy Param = |
Chris Lattner | 0442108 | 2008-04-08 04:40:51 +0000 | [diff] [blame] | 745 | Actions.ActOnParamDeclarator(CurScope, ParmDeclarator); |
Steve Naroff | 2bd42fa | 2007-09-10 20:51:04 +0000 | [diff] [blame] | 746 | |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 747 | if (Param && |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 748 | // A missing identifier has already been diagnosed. |
| 749 | ParmDeclarator.getIdentifier()) { |
| 750 | |
| 751 | // Scan the argument list looking for the correct param to apply this |
| 752 | // type. |
| 753 | for (unsigned i = 0; ; ++i) { |
| 754 | // C99 6.9.1p6: those declarators shall declare only identifiers from |
| 755 | // the identifier list. |
| 756 | if (i == FTI.NumArgs) { |
Chris Lattner | 1ab3b96 | 2008-11-18 07:48:38 +0000 | [diff] [blame] | 757 | Diag(ParmDeclarator.getIdentifierLoc(), diag::err_no_matching_param) |
Chris Lattner | 6898e33 | 2008-11-19 07:51:13 +0000 | [diff] [blame] | 758 | << ParmDeclarator.getIdentifier(); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 759 | break; |
| 760 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 761 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 762 | if (FTI.ArgInfo[i].Ident == ParmDeclarator.getIdentifier()) { |
| 763 | // Reject redefinitions of parameters. |
Chris Lattner | 0442108 | 2008-04-08 04:40:51 +0000 | [diff] [blame] | 764 | if (FTI.ArgInfo[i].Param) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 765 | Diag(ParmDeclarator.getIdentifierLoc(), |
Chris Lattner | 1ab3b96 | 2008-11-18 07:48:38 +0000 | [diff] [blame] | 766 | diag::err_param_redefinition) |
Chris Lattner | 6898e33 | 2008-11-19 07:51:13 +0000 | [diff] [blame] | 767 | << ParmDeclarator.getIdentifier(); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 768 | } else { |
Chris Lattner | 0442108 | 2008-04-08 04:40:51 +0000 | [diff] [blame] | 769 | FTI.ArgInfo[i].Param = Param; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 770 | } |
| 771 | break; |
| 772 | } |
| 773 | } |
| 774 | } |
| 775 | |
| 776 | // If we don't have a comma, it is either the end of the list (a ';') or |
| 777 | // an error, bail out. |
Chris Lattner | 0007322 | 2007-10-09 17:23:58 +0000 | [diff] [blame] | 778 | if (Tok.isNot(tok::comma)) |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 779 | break; |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 780 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 781 | // Consume the comma. |
| 782 | ConsumeToken(); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 783 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 784 | // Parse the next declarator. |
| 785 | ParmDeclarator.clear(); |
| 786 | ParseDeclarator(ParmDeclarator); |
| 787 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 788 | |
Chris Lattner | 0007322 | 2007-10-09 17:23:58 +0000 | [diff] [blame] | 789 | if (Tok.is(tok::semi)) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 790 | ConsumeToken(); |
| 791 | } else { |
| 792 | Diag(Tok, diag::err_parse_error); |
| 793 | // Skip to end of block or statement |
| 794 | SkipUntil(tok::semi, true); |
Chris Lattner | 0007322 | 2007-10-09 17:23:58 +0000 | [diff] [blame] | 795 | if (Tok.is(tok::semi)) |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 796 | ConsumeToken(); |
| 797 | } |
| 798 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 799 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 800 | // The actions module must verify that all arguments were declared. |
Douglas Gregor | a3a8351 | 2009-04-01 23:51:29 +0000 | [diff] [blame] | 801 | Actions.ActOnFinishKNRParamDeclarations(CurScope, D, Tok.getLocation()); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 802 | } |
| 803 | |
| 804 | |
| 805 | /// ParseAsmStringLiteral - This is just a normal string-literal, but is not |
| 806 | /// allowed to be a wide string, and is not subject to character translation. |
| 807 | /// |
| 808 | /// [GNU] asm-string-literal: |
| 809 | /// string-literal |
| 810 | /// |
Sebastian Redl | effa8d1 | 2008-12-10 00:02:53 +0000 | [diff] [blame] | 811 | Parser::OwningExprResult Parser::ParseAsmStringLiteral() { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 812 | if (!isTokenStringLiteral()) { |
| 813 | Diag(Tok, diag::err_expected_string_literal); |
Sebastian Redl | 61364dd | 2008-12-11 19:30:53 +0000 | [diff] [blame] | 814 | return ExprError(); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 815 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 816 | |
Sebastian Redl | 20df9b7 | 2008-12-11 22:51:44 +0000 | [diff] [blame] | 817 | OwningExprResult Res(ParseStringLiteralExpression()); |
Sebastian Redl | effa8d1 | 2008-12-10 00:02:53 +0000 | [diff] [blame] | 818 | if (Res.isInvalid()) return move(Res); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 819 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 820 | // TODO: Diagnose: wide string literal in 'asm' |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 821 | |
Sebastian Redl | effa8d1 | 2008-12-10 00:02:53 +0000 | [diff] [blame] | 822 | return move(Res); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 823 | } |
| 824 | |
| 825 | /// ParseSimpleAsm |
| 826 | /// |
| 827 | /// [GNU] simple-asm-expr: |
| 828 | /// 'asm' '(' asm-string-literal ')' |
| 829 | /// |
Sebastian Redl | ab197ba | 2009-02-09 18:23:29 +0000 | [diff] [blame] | 830 | Parser::OwningExprResult Parser::ParseSimpleAsm(SourceLocation *EndLoc) { |
Chris Lattner | 0007322 | 2007-10-09 17:23:58 +0000 | [diff] [blame] | 831 | assert(Tok.is(tok::kw_asm) && "Not an asm!"); |
Anders Carlsson | dfab6cb | 2008-02-08 00:33:21 +0000 | [diff] [blame] | 832 | SourceLocation Loc = ConsumeToken(); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 833 | |
Chris Lattner | 0007322 | 2007-10-09 17:23:58 +0000 | [diff] [blame] | 834 | if (Tok.isNot(tok::l_paren)) { |
Chris Lattner | 1ab3b96 | 2008-11-18 07:48:38 +0000 | [diff] [blame] | 835 | Diag(Tok, diag::err_expected_lparen_after) << "asm"; |
Sebastian Redl | 61364dd | 2008-12-11 19:30:53 +0000 | [diff] [blame] | 836 | return ExprError(); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 837 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 838 | |
Sebastian Redl | ab197ba | 2009-02-09 18:23:29 +0000 | [diff] [blame] | 839 | Loc = ConsumeParen(); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 840 | |
Sebastian Redl | effa8d1 | 2008-12-10 00:02:53 +0000 | [diff] [blame] | 841 | OwningExprResult Result(ParseAsmStringLiteral()); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 842 | |
Sebastian Redl | ab197ba | 2009-02-09 18:23:29 +0000 | [diff] [blame] | 843 | if (Result.isInvalid()) { |
| 844 | SkipUntil(tok::r_paren, true, true); |
| 845 | if (EndLoc) |
| 846 | *EndLoc = Tok.getLocation(); |
| 847 | ConsumeAnyToken(); |
| 848 | } else { |
| 849 | Loc = MatchRHSPunctuation(tok::r_paren, Loc); |
| 850 | if (EndLoc) |
| 851 | *EndLoc = Loc; |
| 852 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 853 | |
Sebastian Redl | effa8d1 | 2008-12-10 00:02:53 +0000 | [diff] [blame] | 854 | return move(Result); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 855 | } |
| 856 | |
Argyrios Kyrtzidis | eb83ecd | 2008-11-08 16:45:02 +0000 | [diff] [blame] | 857 | /// TryAnnotateTypeOrScopeToken - If the current token position is on a |
| 858 | /// typename (possibly qualified in C++) or a C++ scope specifier not followed |
| 859 | /// by a typename, TryAnnotateTypeOrScopeToken will replace one or more tokens |
| 860 | /// with a single annotation token representing the typename or C++ scope |
| 861 | /// respectively. |
| 862 | /// This simplifies handling of C++ scope specifiers and allows efficient |
| 863 | /// backtracking without the need to re-parse and resolve nested-names and |
| 864 | /// typenames. |
Argyrios Kyrtzidis | 44802cc | 2008-11-26 21:51:07 +0000 | [diff] [blame] | 865 | /// It will mainly be called when we expect to treat identifiers as typenames |
| 866 | /// (if they are typenames). For example, in C we do not expect identifiers |
| 867 | /// inside expressions to be treated as typenames so it will not be called |
| 868 | /// for expressions in C. |
| 869 | /// 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] | 870 | /// 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] | 871 | /// will not be called twice, once to check whether we have a declaration |
| 872 | /// specifier, and another one to get the actual type inside |
| 873 | /// ParseDeclarationSpecifiers). |
Chris Lattner | a7bc7c8 | 2009-01-04 23:23:14 +0000 | [diff] [blame] | 874 | /// |
Chris Lattner | c8e27cc | 2009-06-26 04:27:47 +0000 | [diff] [blame] | 875 | /// This returns true if the token was annotated or an unrecoverable error |
| 876 | /// occurs. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 877 | /// |
Chris Lattner | 55a7cef | 2009-01-05 00:13:00 +0000 | [diff] [blame] | 878 | /// Note that this routine emits an error if you call it with ::new or ::delete |
| 879 | /// 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] | 880 | bool Parser::TryAnnotateTypeOrScopeToken(bool EnteringContext) { |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 881 | assert((Tok.is(tok::identifier) || Tok.is(tok::coloncolon) |
Douglas Gregor | d57959a | 2009-03-27 23:10:48 +0000 | [diff] [blame] | 882 | || Tok.is(tok::kw_typename)) && |
Chris Lattner | 7452c6f | 2009-01-05 01:24:05 +0000 | [diff] [blame] | 883 | "Cannot be a type or scope token!"); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 884 | |
Douglas Gregor | d57959a | 2009-03-27 23:10:48 +0000 | [diff] [blame] | 885 | if (Tok.is(tok::kw_typename)) { |
| 886 | // Parse a C++ typename-specifier, e.g., "typename T::type". |
| 887 | // |
| 888 | // typename-specifier: |
| 889 | // 'typename' '::' [opt] nested-name-specifier identifier |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 890 | // 'typename' '::' [opt] nested-name-specifier template [opt] |
Douglas Gregor | 1734317 | 2009-04-01 00:28:59 +0000 | [diff] [blame] | 891 | // simple-template-id |
Douglas Gregor | d57959a | 2009-03-27 23:10:48 +0000 | [diff] [blame] | 892 | SourceLocation TypenameLoc = ConsumeToken(); |
| 893 | CXXScopeSpec SS; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 894 | bool HadNestedNameSpecifier |
Douglas Gregor | 2dd078a | 2009-09-02 22:59:36 +0000 | [diff] [blame] | 895 | = ParseOptionalCXXScopeSpecifier(SS, /*ObjectType=*/0, false); |
Douglas Gregor | d57959a | 2009-03-27 23:10:48 +0000 | [diff] [blame] | 896 | if (!HadNestedNameSpecifier) { |
| 897 | Diag(Tok.getLocation(), diag::err_expected_qualified_after_typename); |
| 898 | return false; |
| 899 | } |
| 900 | |
| 901 | TypeResult Ty; |
| 902 | if (Tok.is(tok::identifier)) { |
| 903 | // FIXME: check whether the next token is '<', first! |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 904 | Ty = Actions.ActOnTypenameType(TypenameLoc, SS, *Tok.getIdentifierInfo(), |
Douglas Gregor | d57959a | 2009-03-27 23:10:48 +0000 | [diff] [blame] | 905 | Tok.getLocation()); |
Douglas Gregor | 1734317 | 2009-04-01 00:28:59 +0000 | [diff] [blame] | 906 | } else if (Tok.is(tok::annot_template_id)) { |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 907 | TemplateIdAnnotation *TemplateId |
Douglas Gregor | 1734317 | 2009-04-01 00:28:59 +0000 | [diff] [blame] | 908 | = static_cast<TemplateIdAnnotation *>(Tok.getAnnotationValue()); |
| 909 | if (TemplateId->Kind == TNK_Function_template) { |
| 910 | Diag(Tok, diag::err_typename_refers_to_non_type_template) |
| 911 | << Tok.getAnnotationRange(); |
| 912 | return false; |
| 913 | } |
Douglas Gregor | d57959a | 2009-03-27 23:10:48 +0000 | [diff] [blame] | 914 | |
Douglas Gregor | 31a19b6 | 2009-04-01 21:51:26 +0000 | [diff] [blame] | 915 | AnnotateTemplateIdTokenAsType(0); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 916 | assert(Tok.is(tok::annot_typename) && |
Douglas Gregor | 1734317 | 2009-04-01 00:28:59 +0000 | [diff] [blame] | 917 | "AnnotateTemplateIdTokenAsType isn't working properly"); |
Douglas Gregor | 31a19b6 | 2009-04-01 21:51:26 +0000 | [diff] [blame] | 918 | if (Tok.getAnnotationValue()) |
| 919 | Ty = Actions.ActOnTypenameType(TypenameLoc, SS, SourceLocation(), |
| 920 | Tok.getAnnotationValue()); |
| 921 | else |
| 922 | Ty = true; |
Douglas Gregor | 1734317 | 2009-04-01 00:28:59 +0000 | [diff] [blame] | 923 | } else { |
| 924 | Diag(Tok, diag::err_expected_type_name_after_typename) |
| 925 | << SS.getRange(); |
| 926 | return false; |
| 927 | } |
| 928 | |
Douglas Gregor | 1734317 | 2009-04-01 00:28:59 +0000 | [diff] [blame] | 929 | Tok.setKind(tok::annot_typename); |
Douglas Gregor | 31a19b6 | 2009-04-01 21:51:26 +0000 | [diff] [blame] | 930 | Tok.setAnnotationValue(Ty.isInvalid()? 0 : Ty.get()); |
Douglas Gregor | 1734317 | 2009-04-01 00:28:59 +0000 | [diff] [blame] | 931 | Tok.setAnnotationEndLoc(Tok.getLocation()); |
| 932 | Tok.setLocation(TypenameLoc); |
| 933 | PP.AnnotateCachedTokens(Tok); |
| 934 | return true; |
Douglas Gregor | d57959a | 2009-03-27 23:10:48 +0000 | [diff] [blame] | 935 | } |
| 936 | |
Argyrios Kyrtzidis | eb83ecd | 2008-11-08 16:45:02 +0000 | [diff] [blame] | 937 | CXXScopeSpec SS; |
Argyrios Kyrtzidis | 4bdd91c | 2008-11-26 21:41:52 +0000 | [diff] [blame] | 938 | if (getLang().CPlusPlus) |
Douglas Gregor | 2dd078a | 2009-09-02 22:59:36 +0000 | [diff] [blame] | 939 | ParseOptionalCXXScopeSpecifier(SS, /*ObjectType=*/0, EnteringContext); |
Argyrios Kyrtzidis | eb83ecd | 2008-11-08 16:45:02 +0000 | [diff] [blame] | 940 | |
| 941 | if (Tok.is(tok::identifier)) { |
Chris Lattner | 608d1fc | 2009-01-05 01:49:50 +0000 | [diff] [blame] | 942 | // Determine whether the identifier is a type name. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 943 | if (TypeTy *Ty = Actions.getTypeName(*Tok.getIdentifierInfo(), |
Douglas Gregor | b696ea3 | 2009-02-04 17:00:24 +0000 | [diff] [blame] | 944 | Tok.getLocation(), CurScope, &SS)) { |
Chris Lattner | 608d1fc | 2009-01-05 01:49:50 +0000 | [diff] [blame] | 945 | // This is a typename. Replace the current token in-place with an |
| 946 | // annotation type token. |
Chris Lattner | b31757b | 2009-01-06 05:06:21 +0000 | [diff] [blame] | 947 | Tok.setKind(tok::annot_typename); |
Chris Lattner | 608d1fc | 2009-01-05 01:49:50 +0000 | [diff] [blame] | 948 | Tok.setAnnotationValue(Ty); |
| 949 | Tok.setAnnotationEndLoc(Tok.getLocation()); |
| 950 | if (SS.isNotEmpty()) // it was a C++ qualified type name. |
| 951 | Tok.setLocation(SS.getBeginLoc()); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 952 | |
Chris Lattner | 608d1fc | 2009-01-05 01:49:50 +0000 | [diff] [blame] | 953 | // In case the tokens were cached, have Preprocessor replace |
| 954 | // them with the annotation token. |
| 955 | PP.AnnotateCachedTokens(Tok); |
| 956 | return true; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 957 | } |
Douglas Gregor | 39a8de1 | 2009-02-25 19:37:18 +0000 | [diff] [blame] | 958 | |
| 959 | if (!getLang().CPlusPlus) { |
Chris Lattner | 608d1fc | 2009-01-05 01:49:50 +0000 | [diff] [blame] | 960 | // If we're in C, we can't have :: tokens at all (the lexer won't return |
| 961 | // 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] | 962 | // just early exit. |
Chris Lattner | 608d1fc | 2009-01-05 01:49:50 +0000 | [diff] [blame] | 963 | return false; |
Argyrios Kyrtzidis | eb83ecd | 2008-11-08 16:45:02 +0000 | [diff] [blame] | 964 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 965 | |
Douglas Gregor | 39a8de1 | 2009-02-25 19:37:18 +0000 | [diff] [blame] | 966 | // 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] | 967 | if (NextToken().is(tok::less)) { |
Douglas Gregor | 7532dc6 | 2009-03-30 22:58:21 +0000 | [diff] [blame] | 968 | TemplateTy Template; |
Douglas Gregor | 014e88d | 2009-11-03 23:16:33 +0000 | [diff] [blame] | 969 | UnqualifiedId TemplateName; |
| 970 | TemplateName.setIdentifier(Tok.getIdentifierInfo(), Tok.getLocation()); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 971 | if (TemplateNameKind TNK |
Douglas Gregor | 014e88d | 2009-11-03 23:16:33 +0000 | [diff] [blame] | 972 | = Actions.isTemplateName(CurScope, SS, TemplateName, |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 973 | /*ObjectType=*/0, EnteringContext, |
Douglas Gregor | ca1bdd7 | 2009-11-04 00:56:37 +0000 | [diff] [blame] | 974 | Template)) { |
| 975 | // Consume the identifier. |
| 976 | ConsumeToken(); |
| 977 | if (AnnotateTemplateIdToken(Template, TNK, &SS, TemplateName)) { |
Chris Lattner | c8e27cc | 2009-06-26 04:27:47 +0000 | [diff] [blame] | 978 | // If an unrecoverable error occurred, we need to return true here, |
| 979 | // because the token stream is in a damaged state. We may not return |
| 980 | // a valid identifier. |
| 981 | return Tok.isNot(tok::identifier); |
| 982 | } |
Douglas Gregor | ca1bdd7 | 2009-11-04 00:56:37 +0000 | [diff] [blame] | 983 | } |
Douglas Gregor | 55f6b14 | 2009-02-09 18:46:07 +0000 | [diff] [blame] | 984 | } |
Douglas Gregor | d6fb7ef | 2008-12-18 19:37:40 +0000 | [diff] [blame] | 985 | |
Douglas Gregor | 39a8de1 | 2009-02-25 19:37:18 +0000 | [diff] [blame] | 986 | // The current token, which is either an identifier or a |
| 987 | // template-id, is not part of the annotation. Fall through to |
| 988 | // push that token back into the stream and complete the C++ scope |
| 989 | // specifier annotation. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 990 | } |
Argyrios Kyrtzidis | eb83ecd | 2008-11-08 16:45:02 +0000 | [diff] [blame] | 991 | |
Douglas Gregor | 39a8de1 | 2009-02-25 19:37:18 +0000 | [diff] [blame] | 992 | if (Tok.is(tok::annot_template_id)) { |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 993 | TemplateIdAnnotation *TemplateId |
Douglas Gregor | 39a8de1 | 2009-02-25 19:37:18 +0000 | [diff] [blame] | 994 | = static_cast<TemplateIdAnnotation *>(Tok.getAnnotationValue()); |
Douglas Gregor | c45c232 | 2009-03-31 00:43:58 +0000 | [diff] [blame] | 995 | if (TemplateId->Kind == TNK_Type_template) { |
Douglas Gregor | 39a8de1 | 2009-02-25 19:37:18 +0000 | [diff] [blame] | 996 | // A template-id that refers to a type was parsed into a |
| 997 | // template-id annotation in a context where we weren't allowed |
| 998 | // to produce a type annotation token. Update the template-id |
| 999 | // annotation token to a type annotation token now. |
Douglas Gregor | 31a19b6 | 2009-04-01 21:51:26 +0000 | [diff] [blame] | 1000 | AnnotateTemplateIdTokenAsType(&SS); |
| 1001 | return true; |
Douglas Gregor | 39a8de1 | 2009-02-25 19:37:18 +0000 | [diff] [blame] | 1002 | } |
| 1003 | } |
Douglas Gregor | d6fb7ef | 2008-12-18 19:37:40 +0000 | [diff] [blame] | 1004 | |
Chris Lattner | 6ec76d4 | 2009-01-04 22:32:19 +0000 | [diff] [blame] | 1005 | if (SS.isEmpty()) |
Eli Friedman | 3c9028a | 2009-06-27 08:17:02 +0000 | [diff] [blame] | 1006 | return Tok.isNot(tok::identifier) && Tok.isNot(tok::coloncolon); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1007 | |
Chris Lattner | 6ec76d4 | 2009-01-04 22:32:19 +0000 | [diff] [blame] | 1008 | // A C++ scope specifier that isn't followed by a typename. |
| 1009 | // Push the current token back into the token stream (or revert it if it is |
| 1010 | // cached) and use an annotation scope token for current token. |
| 1011 | if (PP.isBacktrackEnabled()) |
| 1012 | PP.RevertCachedTokens(1); |
| 1013 | else |
| 1014 | PP.EnterToken(Tok); |
| 1015 | Tok.setKind(tok::annot_cxxscope); |
Douglas Gregor | 3507369 | 2009-03-26 23:56:24 +0000 | [diff] [blame] | 1016 | Tok.setAnnotationValue(SS.getScopeRep()); |
Chris Lattner | 6ec76d4 | 2009-01-04 22:32:19 +0000 | [diff] [blame] | 1017 | Tok.setAnnotationRange(SS.getRange()); |
Argyrios Kyrtzidis | eb83ecd | 2008-11-08 16:45:02 +0000 | [diff] [blame] | 1018 | |
Chris Lattner | 6ec76d4 | 2009-01-04 22:32:19 +0000 | [diff] [blame] | 1019 | // In case the tokens were cached, have Preprocessor replace them with the |
| 1020 | // annotation token. |
| 1021 | PP.AnnotateCachedTokens(Tok); |
Chris Lattner | a7bc7c8 | 2009-01-04 23:23:14 +0000 | [diff] [blame] | 1022 | return true; |
Argyrios Kyrtzidis | eb83ecd | 2008-11-08 16:45:02 +0000 | [diff] [blame] | 1023 | } |
| 1024 | |
| 1025 | /// TryAnnotateScopeToken - Like TryAnnotateTypeOrScopeToken but only |
Douglas Gregor | 39a8de1 | 2009-02-25 19:37:18 +0000 | [diff] [blame] | 1026 | /// annotates C++ scope specifiers and template-ids. This returns |
Chris Lattner | c8e27cc | 2009-06-26 04:27:47 +0000 | [diff] [blame] | 1027 | /// true if the token was annotated or there was an error that could not be |
| 1028 | /// recovered from. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1029 | /// |
Chris Lattner | 55a7cef | 2009-01-05 00:13:00 +0000 | [diff] [blame] | 1030 | /// Note that this routine emits an error if you call it with ::new or ::delete |
| 1031 | /// 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] | 1032 | bool Parser::TryAnnotateCXXScopeToken(bool EnteringContext) { |
Argyrios Kyrtzidis | 4bdd91c | 2008-11-26 21:41:52 +0000 | [diff] [blame] | 1033 | assert(getLang().CPlusPlus && |
Chris Lattner | 6ec76d4 | 2009-01-04 22:32:19 +0000 | [diff] [blame] | 1034 | "Call sites of this function should be guarded by checking for C++"); |
Chris Lattner | 7452c6f | 2009-01-05 01:24:05 +0000 | [diff] [blame] | 1035 | assert((Tok.is(tok::identifier) || Tok.is(tok::coloncolon)) && |
| 1036 | "Cannot be a type or scope token!"); |
Argyrios Kyrtzidis | eb83ecd | 2008-11-08 16:45:02 +0000 | [diff] [blame] | 1037 | |
Argyrios Kyrtzidis | 4bdd91c | 2008-11-26 21:41:52 +0000 | [diff] [blame] | 1038 | CXXScopeSpec SS; |
Douglas Gregor | 2dd078a | 2009-09-02 22:59:36 +0000 | [diff] [blame] | 1039 | if (!ParseOptionalCXXScopeSpecifier(SS, /*ObjectType=*/0, EnteringContext)) |
Chris Lattner | bd87c0b | 2009-12-07 00:48:47 +0000 | [diff] [blame] | 1040 | // If the token left behind is not an identifier, we either had an error or |
| 1041 | // successfully turned it into an annotation token. |
| 1042 | return Tok.isNot(tok::identifier); |
Argyrios Kyrtzidis | eb83ecd | 2008-11-08 16:45:02 +0000 | [diff] [blame] | 1043 | |
Chris Lattner | 6ec76d4 | 2009-01-04 22:32:19 +0000 | [diff] [blame] | 1044 | // Push the current token back into the token stream (or revert it if it is |
| 1045 | // cached) and use an annotation scope token for current token. |
| 1046 | if (PP.isBacktrackEnabled()) |
| 1047 | PP.RevertCachedTokens(1); |
| 1048 | else |
| 1049 | PP.EnterToken(Tok); |
| 1050 | Tok.setKind(tok::annot_cxxscope); |
Douglas Gregor | 3507369 | 2009-03-26 23:56:24 +0000 | [diff] [blame] | 1051 | Tok.setAnnotationValue(SS.getScopeRep()); |
Chris Lattner | 6ec76d4 | 2009-01-04 22:32:19 +0000 | [diff] [blame] | 1052 | Tok.setAnnotationRange(SS.getRange()); |
Argyrios Kyrtzidis | eb83ecd | 2008-11-08 16:45:02 +0000 | [diff] [blame] | 1053 | |
Chris Lattner | 6ec76d4 | 2009-01-04 22:32:19 +0000 | [diff] [blame] | 1054 | // In case the tokens were cached, have Preprocessor replace them with the |
| 1055 | // annotation token. |
| 1056 | PP.AnnotateCachedTokens(Tok); |
Chris Lattner | 5e02c47 | 2009-01-05 00:07:25 +0000 | [diff] [blame] | 1057 | return true; |
Argyrios Kyrtzidis | eb83ecd | 2008-11-08 16:45:02 +0000 | [diff] [blame] | 1058 | } |
John McCall | 6c94a6d | 2009-11-03 19:33:12 +0000 | [diff] [blame] | 1059 | |
| 1060 | // Anchor the Parser::FieldCallback vtable to this translation unit. |
| 1061 | // We use a spurious method instead of the destructor because |
| 1062 | // destroying FieldCallbacks can actually be slightly |
| 1063 | // performance-sensitive. |
| 1064 | void Parser::FieldCallback::_anchor() { |
| 1065 | } |