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" |
Chandler Carruth | 55fc873 | 2012-12-04 09:13:33 +0000 | [diff] [blame] | 15 | #include "RAIIObjectsForParser.h" |
| 16 | #include "clang/AST/ASTConsumer.h" |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 17 | #include "clang/AST/ASTContext.h" |
Chandler Carruth | 55fc873 | 2012-12-04 09:13:33 +0000 | [diff] [blame] | 18 | #include "clang/AST/DeclTemplate.h" |
Chris Lattner | 500d329 | 2009-01-29 05:15:15 +0000 | [diff] [blame] | 19 | #include "clang/Parse/ParseDiagnostic.h" |
John McCall | 1951085 | 2010-08-20 18:27:03 +0000 | [diff] [blame] | 20 | #include "clang/Sema/DeclSpec.h" |
John McCall | 1951085 | 2010-08-20 18:27:03 +0000 | [diff] [blame] | 21 | #include "clang/Sema/ParsedTemplate.h" |
Chandler Carruth | 55fc873 | 2012-12-04 09:13:33 +0000 | [diff] [blame] | 22 | #include "clang/Sema/Scope.h" |
Chris Lattner | 0102c30 | 2009-03-05 07:24:28 +0000 | [diff] [blame] | 23 | #include "llvm/Support/raw_ostream.h" |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 24 | using namespace clang; |
| 25 | |
Mahesha S | 68de140 | 2012-10-27 09:05:45 +0000 | [diff] [blame] | 26 | |
Benjamin Kramer | 69b5e95 | 2012-07-13 13:25:11 +0000 | [diff] [blame] | 27 | namespace { |
Dmitri Gribenko | aa0cd85 | 2012-06-20 00:34:58 +0000 | [diff] [blame] | 28 | /// \brief A comment handler that passes comments found by the preprocessor |
| 29 | /// to the parser action. |
| 30 | class ActionCommentHandler : public CommentHandler { |
| 31 | Sema &S; |
| 32 | |
| 33 | public: |
| 34 | explicit ActionCommentHandler(Sema &S) : S(S) { } |
| 35 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 36 | bool HandleComment(Preprocessor &PP, SourceRange Comment) override { |
Dmitri Gribenko | aa0cd85 | 2012-06-20 00:34:58 +0000 | [diff] [blame] | 37 | S.ActOnComment(Comment); |
| 38 | return false; |
| 39 | } |
| 40 | }; |
Benjamin Kramer | 69b5e95 | 2012-07-13 13:25:11 +0000 | [diff] [blame] | 41 | } // end anonymous namespace |
Dmitri Gribenko | aa0cd85 | 2012-06-20 00:34:58 +0000 | [diff] [blame] | 42 | |
Douglas Gregor | b57791e | 2011-10-21 03:57:52 +0000 | [diff] [blame] | 43 | IdentifierInfo *Parser::getSEHExceptKeyword() { |
| 44 | // __except is accepted as a (contextual) keyword |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 45 | if (!Ident__except && (getLangOpts().MicrosoftExt || getLangOpts().Borland)) |
Douglas Gregor | b57791e | 2011-10-21 03:57:52 +0000 | [diff] [blame] | 46 | Ident__except = PP.getIdentifierInfo("__except"); |
| 47 | |
| 48 | return Ident__except; |
| 49 | } |
| 50 | |
Argyrios Kyrtzidis | 25893e0 | 2012-10-31 17:29:22 +0000 | [diff] [blame] | 51 | Parser::Parser(Preprocessor &pp, Sema &actions, bool skipFunctionBodies) |
Ted Kremenek | 614f96a | 2011-03-22 01:15:17 +0000 | [diff] [blame] | 52 | : PP(pp), Actions(actions), Diags(PP.getDiagnostics()), |
Douglas Gregor | 0fbda68 | 2010-09-15 14:51:05 +0000 | [diff] [blame] | 53 | GreaterThanIsOperator(true), ColonIsSacred(false), |
Erik Verbruggen | 6a91d38 | 2012-04-12 10:11:59 +0000 | [diff] [blame] | 54 | InMessageExpression(false), TemplateParameterDepth(0), |
Argyrios Kyrtzidis | 25893e0 | 2012-10-31 17:29:22 +0000 | [diff] [blame] | 55 | ParsingInObjCContainer(false) { |
| 56 | SkipFunctionBodies = pp.isCodeCompletionEnabled() || skipFunctionBodies; |
Chris Lattner | 2b970e9 | 2012-10-27 19:49:20 +0000 | [diff] [blame] | 57 | Tok.startToken(); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 58 | Tok.setKind(tok::eof); |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 59 | Actions.CurScope = nullptr; |
Chris Lattner | 9e344c6 | 2007-07-15 00:04:39 +0000 | [diff] [blame] | 60 | NumCachedScopes = 0; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 61 | ParenCount = BracketCount = BraceCount = 0; |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 62 | CurParsedObjCImpl = nullptr; |
Daniel Dunbar | fcdd8fe | 2008-10-04 19:21:03 +0000 | [diff] [blame] | 63 | |
| 64 | // Add #pragma handlers. These are removed and destroyed in the |
| 65 | // destructor. |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 66 | initializePragmaHandlers(); |
Reid Kleckner | 7adf79a | 2013-05-06 21:02:12 +0000 | [diff] [blame] | 67 | |
Dmitri Gribenko | 056e2c3 | 2012-06-20 01:06:08 +0000 | [diff] [blame] | 68 | CommentSemaHandler.reset(new ActionCommentHandler(actions)); |
| 69 | PP.addCommentHandler(CommentSemaHandler.get()); |
Dmitri Gribenko | aa0cd85 | 2012-06-20 00:34:58 +0000 | [diff] [blame] | 70 | |
Douglas Gregor | f44e854 | 2010-08-24 19:08:16 +0000 | [diff] [blame] | 71 | PP.setCodeCompletionHandler(*this); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 72 | } |
| 73 | |
Chris Lattner | 3cbfe2c | 2008-11-22 00:59:29 +0000 | [diff] [blame] | 74 | DiagnosticBuilder Parser::Diag(SourceLocation Loc, unsigned DiagID) { |
Argyrios Kyrtzidis | 33e4e70 | 2010-11-18 20:06:41 +0000 | [diff] [blame] | 75 | return Diags.Report(Loc, DiagID); |
Chris Lattner | 1ab3b96 | 2008-11-18 07:48:38 +0000 | [diff] [blame] | 76 | } |
| 77 | |
Chris Lattner | 3cbfe2c | 2008-11-22 00:59:29 +0000 | [diff] [blame] | 78 | DiagnosticBuilder Parser::Diag(const Token &Tok, unsigned DiagID) { |
Chris Lattner | 1ab3b96 | 2008-11-18 07:48:38 +0000 | [diff] [blame] | 79 | return Diag(Tok.getLocation(), DiagID); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 80 | } |
| 81 | |
Douglas Gregor | 4b2d3f7 | 2009-02-26 21:00:50 +0000 | [diff] [blame] | 82 | /// \brief Emits a diagnostic suggesting parentheses surrounding a |
| 83 | /// given range. |
| 84 | /// |
| 85 | /// \param Loc The location where we'll emit the diagnostic. |
Dmitri Gribenko | 70517ca | 2012-08-23 17:58:28 +0000 | [diff] [blame] | 86 | /// \param DK The kind of diagnostic to emit. |
Douglas Gregor | 4b2d3f7 | 2009-02-26 21:00:50 +0000 | [diff] [blame] | 87 | /// \param ParenRange Source range enclosing code that should be parenthesized. |
| 88 | void Parser::SuggestParentheses(SourceLocation Loc, unsigned DK, |
| 89 | SourceRange ParenRange) { |
Douglas Gregor | b2fb6de | 2009-02-27 17:53:17 +0000 | [diff] [blame] | 90 | SourceLocation EndLoc = PP.getLocForEndOfToken(ParenRange.getEnd()); |
| 91 | if (!ParenRange.getEnd().isFileID() || EndLoc.isInvalid()) { |
Douglas Gregor | 4b2d3f7 | 2009-02-26 21:00:50 +0000 | [diff] [blame] | 92 | // We can't display the parentheses, so just dig the |
| 93 | // warning/error and return. |
| 94 | Diag(Loc, DK); |
| 95 | return; |
| 96 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 97 | |
| 98 | Diag(Loc, DK) |
Douglas Gregor | 849b243 | 2010-03-31 17:46:05 +0000 | [diff] [blame] | 99 | << FixItHint::CreateInsertion(ParenRange.getBegin(), "(") |
| 100 | << FixItHint::CreateInsertion(EndLoc, ")"); |
Douglas Gregor | 4b2d3f7 | 2009-02-26 21:00:50 +0000 | [diff] [blame] | 101 | } |
| 102 | |
John McCall | 837b1a3 | 2010-09-07 18:31:03 +0000 | [diff] [blame] | 103 | static bool IsCommonTypo(tok::TokenKind ExpectedTok, const Token &Tok) { |
| 104 | switch (ExpectedTok) { |
Richard Smith | 4b08242 | 2012-09-18 00:52:05 +0000 | [diff] [blame] | 105 | case tok::semi: |
| 106 | return Tok.is(tok::colon) || Tok.is(tok::comma); // : or , for ; |
John McCall | 837b1a3 | 2010-09-07 18:31:03 +0000 | [diff] [blame] | 107 | default: return false; |
| 108 | } |
| 109 | } |
| 110 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 111 | bool Parser::ExpectAndConsume(tok::TokenKind ExpectedTok, unsigned DiagID, |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 112 | StringRef Msg) { |
Douglas Gregor | dc84534 | 2010-05-25 05:58:43 +0000 | [diff] [blame] | 113 | if (Tok.is(ExpectedTok) || Tok.is(tok::code_completion)) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 114 | ConsumeAnyToken(); |
| 115 | return false; |
| 116 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 117 | |
John McCall | 837b1a3 | 2010-09-07 18:31:03 +0000 | [diff] [blame] | 118 | // Detect common single-character typos and resume. |
| 119 | if (IsCommonTypo(ExpectedTok, Tok)) { |
| 120 | SourceLocation Loc = Tok.getLocation(); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 121 | { |
| 122 | DiagnosticBuilder DB = Diag(Loc, DiagID); |
| 123 | DB << FixItHint::CreateReplacement( |
| 124 | SourceRange(Loc), tok::getPunctuatorSpelling(ExpectedTok)); |
| 125 | if (DiagID == diag::err_expected) |
| 126 | DB << ExpectedTok; |
| 127 | else if (DiagID == diag::err_expected_after) |
| 128 | DB << Msg << ExpectedTok; |
| 129 | else |
| 130 | DB << Msg; |
| 131 | } |
John McCall | 837b1a3 | 2010-09-07 18:31:03 +0000 | [diff] [blame] | 132 | |
| 133 | // Pretend there wasn't a problem. |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 134 | ConsumeAnyToken(); |
John McCall | 837b1a3 | 2010-09-07 18:31:03 +0000 | [diff] [blame] | 135 | return false; |
| 136 | } |
| 137 | |
Douglas Gregor | b2fb6de | 2009-02-27 17:53:17 +0000 | [diff] [blame] | 138 | SourceLocation EndLoc = PP.getLocForEndOfToken(PrevTokLocation); |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 139 | const char *Spelling = nullptr; |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 140 | if (EndLoc.isValid()) |
| 141 | Spelling = tok::getPunctuatorSpelling(ExpectedTok); |
Douglas Gregor | 4b2d3f7 | 2009-02-26 21:00:50 +0000 | [diff] [blame] | 142 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 143 | DiagnosticBuilder DB = |
| 144 | Spelling |
| 145 | ? Diag(EndLoc, DiagID) << FixItHint::CreateInsertion(EndLoc, Spelling) |
| 146 | : Diag(Tok, DiagID); |
| 147 | if (DiagID == diag::err_expected) |
| 148 | DB << ExpectedTok; |
| 149 | else if (DiagID == diag::err_expected_after) |
| 150 | DB << Msg << ExpectedTok; |
| 151 | else |
| 152 | DB << Msg; |
| 153 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 154 | return true; |
| 155 | } |
| 156 | |
Douglas Gregor | 9ba23b4 | 2010-09-07 15:23:11 +0000 | [diff] [blame] | 157 | bool Parser::ExpectAndConsumeSemi(unsigned DiagID) { |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 158 | if (TryConsumeToken(tok::semi)) |
| 159 | return false; |
| 160 | |
| 161 | if (Tok.is(tok::code_completion)) { |
| 162 | handleUnexpectedCodeCompletionToken(); |
Douglas Gregor | 9ba23b4 | 2010-09-07 15:23:11 +0000 | [diff] [blame] | 163 | return false; |
| 164 | } |
| 165 | |
| 166 | if ((Tok.is(tok::r_paren) || Tok.is(tok::r_square)) && |
| 167 | NextToken().is(tok::semi)) { |
| 168 | Diag(Tok, diag::err_extraneous_token_before_semi) |
| 169 | << PP.getSpelling(Tok) |
| 170 | << FixItHint::CreateRemoval(Tok.getLocation()); |
| 171 | ConsumeAnyToken(); // The ')' or ']'. |
| 172 | ConsumeToken(); // The ';'. |
| 173 | return false; |
| 174 | } |
| 175 | |
| 176 | return ExpectAndConsume(tok::semi, DiagID); |
| 177 | } |
| 178 | |
Richard Smith | eab9d6f | 2012-07-23 05:45:25 +0000 | [diff] [blame] | 179 | void Parser::ConsumeExtraSemi(ExtraSemiKind Kind, unsigned TST) { |
Richard Trieu | 4b0e6f1 | 2012-05-16 19:04:59 +0000 | [diff] [blame] | 180 | if (!Tok.is(tok::semi)) return; |
| 181 | |
Richard Smith | eab9d6f | 2012-07-23 05:45:25 +0000 | [diff] [blame] | 182 | bool HadMultipleSemis = false; |
Richard Trieu | 4b0e6f1 | 2012-05-16 19:04:59 +0000 | [diff] [blame] | 183 | SourceLocation StartLoc = Tok.getLocation(); |
| 184 | SourceLocation EndLoc = Tok.getLocation(); |
| 185 | ConsumeToken(); |
| 186 | |
| 187 | while ((Tok.is(tok::semi) && !Tok.isAtStartOfLine())) { |
Richard Smith | eab9d6f | 2012-07-23 05:45:25 +0000 | [diff] [blame] | 188 | HadMultipleSemis = true; |
Richard Trieu | 4b0e6f1 | 2012-05-16 19:04:59 +0000 | [diff] [blame] | 189 | EndLoc = Tok.getLocation(); |
| 190 | ConsumeToken(); |
| 191 | } |
| 192 | |
Richard Smith | eab9d6f | 2012-07-23 05:45:25 +0000 | [diff] [blame] | 193 | // C++11 allows extra semicolons at namespace scope, but not in any of the |
| 194 | // other contexts. |
| 195 | if (Kind == OutsideFunction && getLangOpts().CPlusPlus) { |
Richard Smith | 80ad52f | 2013-01-02 11:42:31 +0000 | [diff] [blame] | 196 | if (getLangOpts().CPlusPlus11) |
Richard Smith | eab9d6f | 2012-07-23 05:45:25 +0000 | [diff] [blame] | 197 | Diag(StartLoc, diag::warn_cxx98_compat_top_level_semi) |
| 198 | << FixItHint::CreateRemoval(SourceRange(StartLoc, EndLoc)); |
| 199 | else |
| 200 | Diag(StartLoc, diag::ext_extra_semi_cxx11) |
| 201 | << FixItHint::CreateRemoval(SourceRange(StartLoc, EndLoc)); |
Richard Trieu | 4b0e6f1 | 2012-05-16 19:04:59 +0000 | [diff] [blame] | 202 | return; |
| 203 | } |
| 204 | |
Richard Smith | eab9d6f | 2012-07-23 05:45:25 +0000 | [diff] [blame] | 205 | if (Kind != AfterMemberFunctionDefinition || HadMultipleSemis) |
| 206 | Diag(StartLoc, diag::ext_extra_semi) |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 207 | << Kind << DeclSpec::getSpecifierName((DeclSpec::TST)TST, |
| 208 | Actions.getASTContext().getPrintingPolicy()) |
Richard Smith | eab9d6f | 2012-07-23 05:45:25 +0000 | [diff] [blame] | 209 | << FixItHint::CreateRemoval(SourceRange(StartLoc, EndLoc)); |
| 210 | else |
| 211 | // A single semicolon is valid after a member function definition. |
| 212 | Diag(StartLoc, diag::warn_extra_semi_after_mem_fn_def) |
| 213 | << FixItHint::CreateRemoval(SourceRange(StartLoc, EndLoc)); |
Richard Trieu | 4b0e6f1 | 2012-05-16 19:04:59 +0000 | [diff] [blame] | 214 | } |
| 215 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 216 | //===----------------------------------------------------------------------===// |
| 217 | // Error recovery. |
| 218 | //===----------------------------------------------------------------------===// |
| 219 | |
Benjamin Kramer | f2b8750 | 2013-11-18 16:50:24 +0000 | [diff] [blame] | 220 | static bool HasFlagsSet(Parser::SkipUntilFlags L, Parser::SkipUntilFlags R) { |
Alexey Bataev | 8fe2475 | 2013-11-18 08:17:37 +0000 | [diff] [blame] | 221 | return (static_cast<unsigned>(L) & static_cast<unsigned>(R)) != 0; |
| 222 | } |
| 223 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 224 | /// SkipUntil - Read tokens until we get to the specified token, then consume |
Alexey Bataev | 8fe2475 | 2013-11-18 08:17:37 +0000 | [diff] [blame] | 225 | /// it (unless no flag StopBeforeMatch). Because we cannot guarantee that the |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 226 | /// token will ever occur, this skips to the next token, or to some likely |
| 227 | /// good stopping point. If StopAtSemi is true, skipping will stop at a ';' |
| 228 | /// character. |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 229 | /// |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 230 | /// If SkipUntil finds the specified token, it returns true, otherwise it |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 231 | /// returns false. |
Alexey Bataev | 8fe2475 | 2013-11-18 08:17:37 +0000 | [diff] [blame] | 232 | bool Parser::SkipUntil(ArrayRef<tok::TokenKind> Toks, SkipUntilFlags Flags) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 233 | // We always want this function to skip at least one token if the first token |
| 234 | // isn't T and if not at EOF. |
| 235 | bool isFirstTokenSkipped = true; |
| 236 | while (1) { |
| 237 | // If we found one of the tokens, stop and return true. |
David Blaikie | eb52f86a | 2012-04-09 16:37:11 +0000 | [diff] [blame] | 238 | for (unsigned i = 0, NumToks = Toks.size(); i != NumToks; ++i) { |
Chris Lattner | 0007322 | 2007-10-09 17:23:58 +0000 | [diff] [blame] | 239 | if (Tok.is(Toks[i])) { |
Alexey Bataev | 8fe2475 | 2013-11-18 08:17:37 +0000 | [diff] [blame] | 240 | if (HasFlagsSet(Flags, StopBeforeMatch)) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 241 | // Noop, don't consume the token. |
| 242 | } else { |
| 243 | ConsumeAnyToken(); |
| 244 | } |
| 245 | return true; |
| 246 | } |
| 247 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 248 | |
Rafael Espindola | d66bf94 | 2013-07-25 02:11:20 +0000 | [diff] [blame] | 249 | // Important special case: The caller has given up and just wants us to |
| 250 | // skip the rest of the file. Do this without recursing, since we can |
| 251 | // get here precisely because the caller detected too much recursion. |
Alexey Bataev | 8fe2475 | 2013-11-18 08:17:37 +0000 | [diff] [blame] | 252 | if (Toks.size() == 1 && Toks[0] == tok::eof && |
| 253 | !HasFlagsSet(Flags, StopAtSemi) && |
| 254 | !HasFlagsSet(Flags, StopAtCodeCompletion)) { |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 255 | while (Tok.isNot(tok::eof)) |
Rafael Espindola | d66bf94 | 2013-07-25 02:11:20 +0000 | [diff] [blame] | 256 | ConsumeAnyToken(); |
| 257 | return true; |
| 258 | } |
| 259 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 260 | switch (Tok.getKind()) { |
| 261 | case tok::eof: |
| 262 | // Ran out of tokens. |
| 263 | return false; |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 264 | |
| 265 | case tok::annot_pragma_openmp_end: |
| 266 | // Stop before an OpenMP pragma boundary. |
| 267 | case tok::annot_module_begin: |
| 268 | case tok::annot_module_end: |
| 269 | case tok::annot_module_include: |
| 270 | // Stop before we change submodules. They generally indicate a "good" |
| 271 | // place to pick up parsing again (except in the special case where |
| 272 | // we're trying to skip to EOF). |
| 273 | return false; |
| 274 | |
Douglas Gregor | dc84534 | 2010-05-25 05:58:43 +0000 | [diff] [blame] | 275 | case tok::code_completion: |
Alexey Bataev | 8fe2475 | 2013-11-18 08:17:37 +0000 | [diff] [blame] | 276 | if (!HasFlagsSet(Flags, StopAtCodeCompletion)) |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 277 | handleUnexpectedCodeCompletionToken(); |
Douglas Gregor | dc84534 | 2010-05-25 05:58:43 +0000 | [diff] [blame] | 278 | return false; |
| 279 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 280 | case tok::l_paren: |
| 281 | // Recursively skip properly-nested parens. |
| 282 | ConsumeParen(); |
Alexey Bataev | 8fe2475 | 2013-11-18 08:17:37 +0000 | [diff] [blame] | 283 | if (HasFlagsSet(Flags, StopAtCodeCompletion)) |
| 284 | SkipUntil(tok::r_paren, StopAtCodeCompletion); |
| 285 | else |
| 286 | SkipUntil(tok::r_paren); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 287 | break; |
| 288 | case tok::l_square: |
| 289 | // Recursively skip properly-nested square brackets. |
| 290 | ConsumeBracket(); |
Alexey Bataev | 8fe2475 | 2013-11-18 08:17:37 +0000 | [diff] [blame] | 291 | if (HasFlagsSet(Flags, StopAtCodeCompletion)) |
| 292 | SkipUntil(tok::r_square, StopAtCodeCompletion); |
| 293 | else |
| 294 | SkipUntil(tok::r_square); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 295 | break; |
| 296 | case tok::l_brace: |
| 297 | // Recursively skip properly-nested braces. |
| 298 | ConsumeBrace(); |
Alexey Bataev | 8fe2475 | 2013-11-18 08:17:37 +0000 | [diff] [blame] | 299 | if (HasFlagsSet(Flags, StopAtCodeCompletion)) |
| 300 | SkipUntil(tok::r_brace, StopAtCodeCompletion); |
| 301 | else |
| 302 | SkipUntil(tok::r_brace); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 303 | break; |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 304 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 305 | // Okay, we found a ']' or '}' or ')', which we think should be balanced. |
| 306 | // Since the user wasn't looking for this token (if they were, it would |
| 307 | // already be handled), this isn't balanced. If there is a LHS token at a |
| 308 | // higher level, we will assume that this matches the unbalanced token |
| 309 | // and return it. Otherwise, this is a spurious RHS token, which we skip. |
| 310 | case tok::r_paren: |
| 311 | if (ParenCount && !isFirstTokenSkipped) |
| 312 | return false; // Matches something. |
| 313 | ConsumeParen(); |
| 314 | break; |
| 315 | case tok::r_square: |
| 316 | if (BracketCount && !isFirstTokenSkipped) |
| 317 | return false; // Matches something. |
| 318 | ConsumeBracket(); |
| 319 | break; |
| 320 | case tok::r_brace: |
| 321 | if (BraceCount && !isFirstTokenSkipped) |
| 322 | return false; // Matches something. |
| 323 | ConsumeBrace(); |
| 324 | break; |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 325 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 326 | case tok::string_literal: |
| 327 | case tok::wide_string_literal: |
Douglas Gregor | 5cee119 | 2011-07-27 05:40:30 +0000 | [diff] [blame] | 328 | case tok::utf8_string_literal: |
| 329 | case tok::utf16_string_literal: |
| 330 | case tok::utf32_string_literal: |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 331 | ConsumeStringToken(); |
| 332 | break; |
Fariborz Jahanian | 55edca9 | 2011-02-23 00:11:21 +0000 | [diff] [blame] | 333 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 334 | case tok::semi: |
Alexey Bataev | 8fe2475 | 2013-11-18 08:17:37 +0000 | [diff] [blame] | 335 | if (HasFlagsSet(Flags, StopAtSemi)) |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 336 | return false; |
| 337 | // FALL THROUGH. |
| 338 | default: |
| 339 | // Skip this token. |
| 340 | ConsumeToken(); |
| 341 | break; |
| 342 | } |
| 343 | isFirstTokenSkipped = false; |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 344 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 345 | } |
| 346 | |
| 347 | //===----------------------------------------------------------------------===// |
| 348 | // Scope manipulation |
| 349 | //===----------------------------------------------------------------------===// |
| 350 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 351 | /// EnterScope - Start a new scope. |
| 352 | void Parser::EnterScope(unsigned ScopeFlags) { |
Chris Lattner | 9e344c6 | 2007-07-15 00:04:39 +0000 | [diff] [blame] | 353 | if (NumCachedScopes) { |
| 354 | Scope *N = ScopeCache[--NumCachedScopes]; |
Douglas Gregor | 23c94db | 2010-07-02 17:43:08 +0000 | [diff] [blame] | 355 | N->Init(getCurScope(), ScopeFlags); |
| 356 | Actions.CurScope = N; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 357 | } else { |
Argyrios Kyrtzidis | 9c4eb1f | 2010-11-19 00:19:12 +0000 | [diff] [blame] | 358 | Actions.CurScope = new Scope(getCurScope(), ScopeFlags, Diags); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 359 | } |
| 360 | } |
| 361 | |
| 362 | /// ExitScope - Pop a scope off the scope stack. |
| 363 | void Parser::ExitScope() { |
Douglas Gregor | 23c94db | 2010-07-02 17:43:08 +0000 | [diff] [blame] | 364 | assert(getCurScope() && "Scope imbalance!"); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 365 | |
Chris Lattner | 90ae68a | 2007-10-09 20:37:18 +0000 | [diff] [blame] | 366 | // Inform the actions module that this scope is going away if there are any |
| 367 | // decls in it. |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 368 | Actions.ActOnPopScope(Tok.getLocation(), getCurScope()); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 369 | |
Douglas Gregor | 23c94db | 2010-07-02 17:43:08 +0000 | [diff] [blame] | 370 | Scope *OldScope = getCurScope(); |
| 371 | Actions.CurScope = OldScope->getParent(); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 372 | |
Chris Lattner | 9e344c6 | 2007-07-15 00:04:39 +0000 | [diff] [blame] | 373 | if (NumCachedScopes == ScopeCacheSize) |
| 374 | delete OldScope; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 375 | else |
Chris Lattner | 9e344c6 | 2007-07-15 00:04:39 +0000 | [diff] [blame] | 376 | ScopeCache[NumCachedScopes++] = OldScope; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 377 | } |
| 378 | |
Richard Smith | 7a614d8 | 2011-06-11 17:19:42 +0000 | [diff] [blame] | 379 | /// Set the flags for the current scope to ScopeFlags. If ManageFlags is false, |
| 380 | /// this object does nothing. |
| 381 | Parser::ParseScopeFlags::ParseScopeFlags(Parser *Self, unsigned ScopeFlags, |
| 382 | bool ManageFlags) |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 383 | : CurScope(ManageFlags ? Self->getCurScope() : nullptr) { |
Richard Smith | 7a614d8 | 2011-06-11 17:19:42 +0000 | [diff] [blame] | 384 | if (CurScope) { |
| 385 | OldFlags = CurScope->getFlags(); |
| 386 | CurScope->setFlags(ScopeFlags); |
| 387 | } |
| 388 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 389 | |
Richard Smith | 7a614d8 | 2011-06-11 17:19:42 +0000 | [diff] [blame] | 390 | /// Restore the flags for the current scope to what they were before this |
| 391 | /// object overrode them. |
| 392 | Parser::ParseScopeFlags::~ParseScopeFlags() { |
| 393 | if (CurScope) |
| 394 | CurScope->setFlags(OldFlags); |
| 395 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 396 | |
| 397 | |
| 398 | //===----------------------------------------------------------------------===// |
| 399 | // C99 6.9: External Definitions. |
| 400 | //===----------------------------------------------------------------------===// |
| 401 | |
| 402 | Parser::~Parser() { |
| 403 | // If we still have scopes active, delete the scope tree. |
Douglas Gregor | 23c94db | 2010-07-02 17:43:08 +0000 | [diff] [blame] | 404 | delete getCurScope(); |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 405 | Actions.CurScope = nullptr; |
| 406 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 407 | // Free the scope cache. |
Chris Lattner | 9e344c6 | 2007-07-15 00:04:39 +0000 | [diff] [blame] | 408 | for (unsigned i = 0, e = NumCachedScopes; i != e; ++i) |
| 409 | delete ScopeCache[i]; |
Daniel Dunbar | fcdd8fe | 2008-10-04 19:21:03 +0000 | [diff] [blame] | 410 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 411 | resetPragmaHandlers(); |
Dmitri Gribenko | aa0cd85 | 2012-06-20 00:34:58 +0000 | [diff] [blame] | 412 | |
Dmitri Gribenko | 056e2c3 | 2012-06-20 01:06:08 +0000 | [diff] [blame] | 413 | PP.removeCommentHandler(CommentSemaHandler.get()); |
Dmitri Gribenko | aa0cd85 | 2012-06-20 00:34:58 +0000 | [diff] [blame] | 414 | |
Douglas Gregor | f44e854 | 2010-08-24 19:08:16 +0000 | [diff] [blame] | 415 | PP.clearCodeCompletionHandler(); |
Benjamin Kramer | 13bb701 | 2012-04-14 12:14:03 +0000 | [diff] [blame] | 416 | |
| 417 | assert(TemplateIds.empty() && "Still alive TemplateIdAnnotations around?"); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 418 | } |
| 419 | |
| 420 | /// Initialize - Warm up the parser. |
| 421 | /// |
| 422 | void Parser::Initialize() { |
Chris Lattner | 31e0572 | 2007-08-26 06:24:45 +0000 | [diff] [blame] | 423 | // Create the translation unit scope. Install it as the current scope. |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 424 | assert(getCurScope() == nullptr && "A scope is already active?"); |
Chris Lattner | 31e0572 | 2007-08-26 06:24:45 +0000 | [diff] [blame] | 425 | EnterScope(Scope::DeclScope); |
Douglas Gregor | c1a3e5e | 2010-08-25 18:07:12 +0000 | [diff] [blame] | 426 | Actions.ActOnTranslationUnitScope(getCurScope()); |
| 427 | |
Chris Lattner | 34870da | 2007-08-29 22:54:08 +0000 | [diff] [blame] | 428 | // Initialization for Objective-C context sensitive keywords recognition. |
Ted Kremenek | a526c5c | 2008-01-07 19:49:32 +0000 | [diff] [blame] | 429 | // Referenced in Parser::ParseObjCTypeQualifierList. |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 430 | if (getLangOpts().ObjC1) { |
Ted Kremenek | a526c5c | 2008-01-07 19:49:32 +0000 | [diff] [blame] | 431 | ObjCTypeQuals[objc_in] = &PP.getIdentifierTable().get("in"); |
| 432 | ObjCTypeQuals[objc_out] = &PP.getIdentifierTable().get("out"); |
| 433 | ObjCTypeQuals[objc_inout] = &PP.getIdentifierTable().get("inout"); |
| 434 | ObjCTypeQuals[objc_oneway] = &PP.getIdentifierTable().get("oneway"); |
| 435 | ObjCTypeQuals[objc_bycopy] = &PP.getIdentifierTable().get("bycopy"); |
| 436 | ObjCTypeQuals[objc_byref] = &PP.getIdentifierTable().get("byref"); |
Chris Lattner | 34870da | 2007-08-29 22:54:08 +0000 | [diff] [blame] | 437 | } |
Daniel Dunbar | 662e8b5 | 2008-08-14 22:04:54 +0000 | [diff] [blame] | 438 | |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 439 | Ident_instancetype = nullptr; |
| 440 | Ident_final = nullptr; |
| 441 | Ident_sealed = nullptr; |
| 442 | Ident_override = nullptr; |
Anders Carlsson | 1f3b6fd | 2011-01-16 23:56:42 +0000 | [diff] [blame] | 443 | |
Daniel Dunbar | 662e8b5 | 2008-08-14 22:04:54 +0000 | [diff] [blame] | 444 | Ident_super = &PP.getIdentifierTable().get("super"); |
John Thompson | 82287d1 | 2010-02-05 00:12:22 +0000 | [diff] [blame] | 445 | |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 446 | if (getLangOpts().AltiVec) { |
John Thompson | 82287d1 | 2010-02-05 00:12:22 +0000 | [diff] [blame] | 447 | Ident_vector = &PP.getIdentifierTable().get("vector"); |
| 448 | Ident_pixel = &PP.getIdentifierTable().get("pixel"); |
Bill Schmidt | 3e3d20b | 2013-07-03 20:54:09 +0000 | [diff] [blame] | 449 | Ident_bool = &PP.getIdentifierTable().get("bool"); |
John Thompson | 82287d1 | 2010-02-05 00:12:22 +0000 | [diff] [blame] | 450 | } |
Douglas Gregor | 0a0d2b1 | 2011-03-23 00:50:03 +0000 | [diff] [blame] | 451 | |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 452 | Ident_introduced = nullptr; |
| 453 | Ident_deprecated = nullptr; |
| 454 | Ident_obsoleted = nullptr; |
| 455 | Ident_unavailable = nullptr; |
John Wiegley | 28bbe4b | 2011-04-28 01:08:34 +0000 | [diff] [blame] | 456 | |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 457 | Ident__except = nullptr; |
| 458 | |
| 459 | Ident__exception_code = Ident__exception_info = nullptr; |
| 460 | Ident__abnormal_termination = Ident___exception_code = nullptr; |
| 461 | Ident___exception_info = Ident___abnormal_termination = nullptr; |
| 462 | Ident_GetExceptionCode = Ident_GetExceptionInfo = nullptr; |
| 463 | Ident_AbnormalTermination = nullptr; |
John Wiegley | 28bbe4b | 2011-04-28 01:08:34 +0000 | [diff] [blame] | 464 | |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 465 | if(getLangOpts().Borland) { |
John Wiegley | 28bbe4b | 2011-04-28 01:08:34 +0000 | [diff] [blame] | 466 | Ident__exception_info = PP.getIdentifierInfo("_exception_info"); |
| 467 | Ident___exception_info = PP.getIdentifierInfo("__exception_info"); |
| 468 | Ident_GetExceptionInfo = PP.getIdentifierInfo("GetExceptionInformation"); |
| 469 | Ident__exception_code = PP.getIdentifierInfo("_exception_code"); |
| 470 | Ident___exception_code = PP.getIdentifierInfo("__exception_code"); |
| 471 | Ident_GetExceptionCode = PP.getIdentifierInfo("GetExceptionCode"); |
| 472 | Ident__abnormal_termination = PP.getIdentifierInfo("_abnormal_termination"); |
| 473 | Ident___abnormal_termination = PP.getIdentifierInfo("__abnormal_termination"); |
| 474 | Ident_AbnormalTermination = PP.getIdentifierInfo("AbnormalTermination"); |
| 475 | |
| 476 | PP.SetPoisonReason(Ident__exception_code,diag::err_seh___except_block); |
| 477 | PP.SetPoisonReason(Ident___exception_code,diag::err_seh___except_block); |
| 478 | PP.SetPoisonReason(Ident_GetExceptionCode,diag::err_seh___except_block); |
| 479 | PP.SetPoisonReason(Ident__exception_info,diag::err_seh___except_filter); |
| 480 | PP.SetPoisonReason(Ident___exception_info,diag::err_seh___except_filter); |
| 481 | PP.SetPoisonReason(Ident_GetExceptionInfo,diag::err_seh___except_filter); |
| 482 | PP.SetPoisonReason(Ident__abnormal_termination,diag::err_seh___finally_block); |
| 483 | PP.SetPoisonReason(Ident___abnormal_termination,diag::err_seh___finally_block); |
| 484 | PP.SetPoisonReason(Ident_AbnormalTermination,diag::err_seh___finally_block); |
| 485 | } |
Douglas Gregor | c7be102 | 2012-11-05 23:58:27 +0000 | [diff] [blame] | 486 | |
| 487 | Actions.Initialize(); |
| 488 | |
| 489 | // Prime the lexer look-ahead. |
| 490 | ConsumeToken(); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 491 | } |
| 492 | |
Benjamin Kramer | 13bb701 | 2012-04-14 12:14:03 +0000 | [diff] [blame] | 493 | namespace { |
| 494 | /// \brief RAIIObject to destroy the contents of a SmallVector of |
| 495 | /// TemplateIdAnnotation pointers and clear the vector. |
| 496 | class DestroyTemplateIdAnnotationsRAIIObj { |
| 497 | SmallVectorImpl<TemplateIdAnnotation *> &Container; |
| 498 | public: |
| 499 | DestroyTemplateIdAnnotationsRAIIObj(SmallVectorImpl<TemplateIdAnnotation *> |
| 500 | &Container) |
| 501 | : Container(Container) {} |
| 502 | |
| 503 | ~DestroyTemplateIdAnnotationsRAIIObj() { |
| 504 | for (SmallVectorImpl<TemplateIdAnnotation *>::iterator I = |
| 505 | Container.begin(), E = Container.end(); |
| 506 | I != E; ++I) |
| 507 | (*I)->Destroy(); |
| 508 | Container.clear(); |
| 509 | } |
| 510 | }; |
| 511 | } |
| 512 | |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 513 | void Parser::LateTemplateParserCleanupCallback(void *P) { |
| 514 | // While this RAII helper doesn't bracket any actual work, the destructor will |
| 515 | // clean up annotations that were created during ActOnEndOfTranslationUnit |
| 516 | // when incremental processing is enabled. |
| 517 | DestroyTemplateIdAnnotationsRAIIObj CleanupRAII(((Parser *)P)->TemplateIds); |
| 518 | } |
| 519 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 520 | /// ParseTopLevelDecl - Parse one top-level declaration, return whatever the |
| 521 | /// action tells us to. This returns true if the EOF was encountered. |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 522 | bool Parser::ParseTopLevelDecl(DeclGroupPtrTy &Result) { |
Benjamin Kramer | 13bb701 | 2012-04-14 12:14:03 +0000 | [diff] [blame] | 523 | DestroyTemplateIdAnnotationsRAIIObj CleanupRAII(TemplateIds); |
Argyrios Kyrtzidis | b918d0f | 2011-01-17 18:58:44 +0000 | [diff] [blame] | 524 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 525 | // Skip over the EOF token, flagging end of previous input for incremental |
Axel Naumann | e55329d | 2012-03-16 10:40:17 +0000 | [diff] [blame] | 526 | // processing |
| 527 | if (PP.isIncrementalProcessingEnabled() && Tok.is(tok::eof)) |
| 528 | ConsumeToken(); |
| 529 | |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 530 | Result = DeclGroupPtrTy(); |
Richard Smith | 26297f5 | 2013-11-15 04:24:58 +0000 | [diff] [blame] | 531 | switch (Tok.getKind()) { |
| 532 | case tok::annot_pragma_unused: |
| 533 | HandlePragmaUnused(); |
| 534 | return false; |
| 535 | |
| 536 | case tok::annot_module_include: |
| 537 | Actions.ActOnModuleInclude(Tok.getLocation(), |
| 538 | reinterpret_cast<Module *>( |
| 539 | Tok.getAnnotationValue())); |
| 540 | ConsumeToken(); |
| 541 | return false; |
| 542 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 543 | case tok::annot_module_begin: |
| 544 | case tok::annot_module_end: |
| 545 | // FIXME: Update visibility based on the submodule we're in. |
| 546 | ConsumeToken(); |
| 547 | return false; |
| 548 | |
Richard Smith | 26297f5 | 2013-11-15 04:24:58 +0000 | [diff] [blame] | 549 | case tok::eof: |
Francois Pichet | 8387e2a | 2011-04-22 22:18:13 +0000 | [diff] [blame] | 550 | // Late template parsing can begin. |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 551 | if (getLangOpts().DelayedTemplateParsing) |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 552 | Actions.SetLateTemplateParser(LateTemplateParserCallback, |
| 553 | PP.isIncrementalProcessingEnabled() ? |
| 554 | LateTemplateParserCleanupCallback : nullptr, |
| 555 | this); |
Axel Naumann | e55329d | 2012-03-16 10:40:17 +0000 | [diff] [blame] | 556 | if (!PP.isIncrementalProcessingEnabled()) |
| 557 | Actions.ActOnEndOfTranslationUnit(); |
| 558 | //else don't tell Sema that we ended parsing: more input might come. |
Chris Lattner | 9299f3f | 2008-08-23 03:19:52 +0000 | [diff] [blame] | 559 | return true; |
Richard Smith | 26297f5 | 2013-11-15 04:24:58 +0000 | [diff] [blame] | 560 | |
| 561 | default: |
| 562 | break; |
Chris Lattner | 9299f3f | 2008-08-23 03:19:52 +0000 | [diff] [blame] | 563 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 564 | |
John McCall | 0b7e678 | 2011-03-24 11:26:52 +0000 | [diff] [blame] | 565 | ParsedAttributesWithRange attrs(AttrFactory); |
Richard Smith | 4e24f0f | 2013-01-02 12:01:23 +0000 | [diff] [blame] | 566 | MaybeParseCXX11Attributes(attrs); |
John McCall | 7f040a9 | 2010-12-24 02:08:15 +0000 | [diff] [blame] | 567 | MaybeParseMicrosoftAttributes(attrs); |
Axel Naumann | e55329d | 2012-03-16 10:40:17 +0000 | [diff] [blame] | 568 | |
John McCall | 7f040a9 | 2010-12-24 02:08:15 +0000 | [diff] [blame] | 569 | Result = ParseExternalDeclaration(attrs); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 570 | return false; |
| 571 | } |
| 572 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 573 | /// ParseExternalDeclaration: |
Chris Lattner | 90b93d6 | 2008-12-08 21:59:01 +0000 | [diff] [blame] | 574 | /// |
Douglas Gregor | c19923d | 2008-11-21 16:10:08 +0000 | [diff] [blame] | 575 | /// external-declaration: [C99 6.9], declaration: [C++ dcl.dcl] |
Chris Lattner | c301815 | 2007-08-10 20:57:02 +0000 | [diff] [blame] | 576 | /// function-definition |
| 577 | /// declaration |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 578 | /// [GNU] asm-definition |
Chris Lattner | c301815 | 2007-08-10 20:57:02 +0000 | [diff] [blame] | 579 | /// [GNU] __extension__ external-declaration |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 580 | /// [OBJC] objc-class-definition |
| 581 | /// [OBJC] objc-class-declaration |
| 582 | /// [OBJC] objc-alias-declaration |
| 583 | /// [OBJC] objc-protocol-definition |
| 584 | /// [OBJC] objc-method-definition |
| 585 | /// [OBJC] @end |
Douglas Gregor | c19923d | 2008-11-21 16:10:08 +0000 | [diff] [blame] | 586 | /// [C++] linkage-specification |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 587 | /// [GNU] asm-definition: |
| 588 | /// simple-asm-expr ';' |
Richard Smith | 6b3d3e5 | 2013-02-20 19:22:51 +0000 | [diff] [blame] | 589 | /// [C++11] empty-declaration |
| 590 | /// [C++11] attribute-declaration |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 591 | /// |
Richard Smith | 6b3d3e5 | 2013-02-20 19:22:51 +0000 | [diff] [blame] | 592 | /// [C++11] empty-declaration: |
Douglas Gregor | a1d71ae | 2009-08-24 12:17:54 +0000 | [diff] [blame] | 593 | /// ';' |
| 594 | /// |
Douglas Gregor | 45f9655 | 2009-09-04 06:33:52 +0000 | [diff] [blame] | 595 | /// [C++0x/GNU] 'extern' 'template' declaration |
John McCall | 7f040a9 | 2010-12-24 02:08:15 +0000 | [diff] [blame] | 596 | Parser::DeclGroupPtrTy |
| 597 | Parser::ParseExternalDeclaration(ParsedAttributesWithRange &attrs, |
| 598 | ParsingDeclSpec *DS) { |
Benjamin Kramer | 13bb701 | 2012-04-14 12:14:03 +0000 | [diff] [blame] | 599 | DestroyTemplateIdAnnotationsRAIIObj CleanupRAII(TemplateIds); |
Argyrios Kyrtzidis | 36d3680 | 2010-06-17 10:52:18 +0000 | [diff] [blame] | 600 | ParenBraceBracketBalancer BalancerRAIIObj(*this); |
Argyrios Kyrtzidis | 7d10087 | 2011-09-04 03:32:15 +0000 | [diff] [blame] | 601 | |
| 602 | if (PP.isCodeCompletionReached()) { |
| 603 | cutOffParsing(); |
| 604 | return DeclGroupPtrTy(); |
| 605 | } |
| 606 | |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 607 | Decl *SingleDecl = nullptr; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 608 | switch (Tok.getKind()) { |
Rafael Espindola | 426fc94 | 2012-01-26 02:02:57 +0000 | [diff] [blame] | 609 | case tok::annot_pragma_vis: |
| 610 | HandlePragmaVisibility(); |
| 611 | return DeclGroupPtrTy(); |
Eli Friedman | aa5ab26 | 2012-02-23 23:47:16 +0000 | [diff] [blame] | 612 | case tok::annot_pragma_pack: |
| 613 | HandlePragmaPack(); |
| 614 | return DeclGroupPtrTy(); |
Eli Friedman | 9595c7e | 2012-10-04 02:36:51 +0000 | [diff] [blame] | 615 | case tok::annot_pragma_msstruct: |
| 616 | HandlePragmaMSStruct(); |
| 617 | return DeclGroupPtrTy(); |
| 618 | case tok::annot_pragma_align: |
| 619 | HandlePragmaAlign(); |
| 620 | return DeclGroupPtrTy(); |
| 621 | case tok::annot_pragma_weak: |
| 622 | HandlePragmaWeak(); |
| 623 | return DeclGroupPtrTy(); |
| 624 | case tok::annot_pragma_weakalias: |
| 625 | HandlePragmaWeakAlias(); |
| 626 | return DeclGroupPtrTy(); |
| 627 | case tok::annot_pragma_redefine_extname: |
| 628 | HandlePragmaRedefineExtname(); |
| 629 | return DeclGroupPtrTy(); |
| 630 | case tok::annot_pragma_fp_contract: |
| 631 | HandlePragmaFPContract(); |
| 632 | return DeclGroupPtrTy(); |
| 633 | case tok::annot_pragma_opencl_extension: |
| 634 | HandlePragmaOpenCLExtension(); |
| 635 | return DeclGroupPtrTy(); |
Alexey Bataev | c640058 | 2013-03-22 06:34:35 +0000 | [diff] [blame] | 636 | case tok::annot_pragma_openmp: |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 637 | return ParseOpenMPDeclarativeDirective(); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 638 | case tok::annot_pragma_ms_pointers_to_members: |
| 639 | HandlePragmaMSPointersToMembers(); |
| 640 | return DeclGroupPtrTy(); |
| 641 | case tok::annot_pragma_ms_vtordisp: |
| 642 | HandlePragmaMSVtorDisp(); |
| 643 | return DeclGroupPtrTy(); |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 644 | case tok::annot_pragma_ms_pragma: |
| 645 | HandlePragmaMSPragma(); |
| 646 | return DeclGroupPtrTy(); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 647 | case tok::semi: |
Richard Smith | 6b3d3e5 | 2013-02-20 19:22:51 +0000 | [diff] [blame] | 648 | // Either a C++11 empty-declaration or attribute-declaration. |
Michael Han | 684aa73 | 2013-02-22 17:15:32 +0000 | [diff] [blame] | 649 | SingleDecl = Actions.ActOnEmptyDeclaration(getCurScope(), |
| 650 | attrs.getList(), |
| 651 | Tok.getLocation()); |
Richard Trieu | 4b0e6f1 | 2012-05-16 19:04:59 +0000 | [diff] [blame] | 652 | ConsumeExtraSemi(OutsideFunction); |
Michael Han | 684aa73 | 2013-02-22 17:15:32 +0000 | [diff] [blame] | 653 | break; |
Chris Lattner | 90b93d6 | 2008-12-08 21:59:01 +0000 | [diff] [blame] | 654 | case tok::r_brace: |
Nico Weber | 883692e | 2012-01-17 01:04:27 +0000 | [diff] [blame] | 655 | Diag(Tok, diag::err_extraneous_closing_brace); |
Chris Lattner | 90b93d6 | 2008-12-08 21:59:01 +0000 | [diff] [blame] | 656 | ConsumeBrace(); |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 657 | return DeclGroupPtrTy(); |
Chris Lattner | 90b93d6 | 2008-12-08 21:59:01 +0000 | [diff] [blame] | 658 | case tok::eof: |
| 659 | Diag(Tok, diag::err_expected_external_declaration); |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 660 | return DeclGroupPtrTy(); |
Chris Lattner | c301815 | 2007-08-10 20:57:02 +0000 | [diff] [blame] | 661 | case tok::kw___extension__: { |
Chris Lattner | c46d1a1 | 2008-10-20 06:45:43 +0000 | [diff] [blame] | 662 | // __extension__ silences extension warnings in the subexpression. |
| 663 | ExtensionRAIIObject O(Diags); // Use RAII to do this. |
Chris Lattner | 39146d6 | 2008-10-20 06:51:33 +0000 | [diff] [blame] | 664 | ConsumeToken(); |
John McCall | 7f040a9 | 2010-12-24 02:08:15 +0000 | [diff] [blame] | 665 | return ParseExternalDeclaration(attrs); |
Chris Lattner | c301815 | 2007-08-10 20:57:02 +0000 | [diff] [blame] | 666 | } |
Anders Carlsson | dfab6cb | 2008-02-08 00:33:21 +0000 | [diff] [blame] | 667 | case tok::kw_asm: { |
John McCall | 7f040a9 | 2010-12-24 02:08:15 +0000 | [diff] [blame] | 668 | ProhibitAttributes(attrs); |
Sean Hunt | bbd37c6 | 2009-11-21 08:43:09 +0000 | [diff] [blame] | 669 | |
Abramo Bagnara | 21e006e | 2011-03-03 14:20:18 +0000 | [diff] [blame] | 670 | SourceLocation StartLoc = Tok.getLocation(); |
| 671 | SourceLocation EndLoc; |
| 672 | ExprResult Result(ParseSimpleAsm(&EndLoc)); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 673 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 674 | ExpectAndConsume(tok::semi, diag::err_expected_after, |
Anders Carlsson | 3f9424f | 2008-02-08 00:23:11 +0000 | [diff] [blame] | 675 | "top-level asm block"); |
Anders Carlsson | dfab6cb | 2008-02-08 00:33:21 +0000 | [diff] [blame] | 676 | |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 677 | if (Result.isInvalid()) |
| 678 | return DeclGroupPtrTy(); |
Abramo Bagnara | 21e006e | 2011-03-03 14:20:18 +0000 | [diff] [blame] | 679 | SingleDecl = Actions.ActOnFileScopeAsmDecl(Result.get(), StartLoc, EndLoc); |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 680 | break; |
Anders Carlsson | dfab6cb | 2008-02-08 00:33:21 +0000 | [diff] [blame] | 681 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 682 | case tok::at: |
Fariborz Jahanian | 95ed778 | 2011-08-27 20:50:59 +0000 | [diff] [blame] | 683 | return ParseObjCAtDirectives(); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 684 | case tok::minus: |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 685 | case tok::plus: |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 686 | if (!getLangOpts().ObjC1) { |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 687 | Diag(Tok, diag::err_expected_external_declaration); |
| 688 | ConsumeToken(); |
| 689 | return DeclGroupPtrTy(); |
| 690 | } |
| 691 | SingleDecl = ParseObjCMethodDefinition(); |
| 692 | break; |
Douglas Gregor | 791215b | 2009-09-21 20:51:25 +0000 | [diff] [blame] | 693 | case tok::code_completion: |
Douglas Gregor | 23c94db | 2010-07-02 17:43:08 +0000 | [diff] [blame] | 694 | Actions.CodeCompleteOrdinaryName(getCurScope(), |
Argyrios Kyrtzidis | 849639d | 2012-02-07 16:50:53 +0000 | [diff] [blame] | 695 | CurParsedObjCImpl? Sema::PCC_ObjCImplementation |
John McCall | f312b1e | 2010-08-26 23:41:50 +0000 | [diff] [blame] | 696 | : Sema::PCC_Namespace); |
Argyrios Kyrtzidis | 7d10087 | 2011-09-04 03:32:15 +0000 | [diff] [blame] | 697 | cutOffParsing(); |
| 698 | return DeclGroupPtrTy(); |
Douglas Gregor | f780abc | 2008-12-30 03:27:21 +0000 | [diff] [blame] | 699 | case tok::kw_using: |
Chris Lattner | 8f08cb7 | 2007-08-25 06:57:03 +0000 | [diff] [blame] | 700 | case tok::kw_namespace: |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 701 | case tok::kw_typedef: |
Douglas Gregor | adcac88 | 2008-12-01 23:54:00 +0000 | [diff] [blame] | 702 | case tok::kw_template: |
| 703 | case tok::kw_export: // As in 'export template' |
Anders Carlsson | 511d7ab | 2009-03-11 16:27:10 +0000 | [diff] [blame] | 704 | case tok::kw_static_assert: |
Peter Collingbourne | c6eb44b | 2011-04-15 00:35:57 +0000 | [diff] [blame] | 705 | case tok::kw__Static_assert: |
Chad Rosier | 26d6023 | 2012-04-25 22:51:41 +0000 | [diff] [blame] | 706 | // A function definition cannot start with any of these keywords. |
Chris Lattner | 97144fc | 2009-04-02 04:16:50 +0000 | [diff] [blame] | 707 | { |
| 708 | SourceLocation DeclEnd; |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 709 | return ParseDeclaration(Declarator::FileContext, DeclEnd, attrs); |
Chris Lattner | 97144fc | 2009-04-02 04:16:50 +0000 | [diff] [blame] | 710 | } |
Sebastian Redl | d078e64 | 2010-08-27 23:12:46 +0000 | [diff] [blame] | 711 | |
Douglas Gregor | 7306ebf | 2010-12-01 20:32:20 +0000 | [diff] [blame] | 712 | case tok::kw_static: |
| 713 | // Parse (then ignore) 'static' prior to a template instantiation. This is |
| 714 | // a GCC extension that we intentionally do not support. |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 715 | if (getLangOpts().CPlusPlus && NextToken().is(tok::kw_template)) { |
Douglas Gregor | 7306ebf | 2010-12-01 20:32:20 +0000 | [diff] [blame] | 716 | Diag(ConsumeToken(), diag::warn_static_inline_explicit_inst_ignored) |
| 717 | << 0; |
Sebastian Redl | d078e64 | 2010-08-27 23:12:46 +0000 | [diff] [blame] | 718 | SourceLocation DeclEnd; |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 719 | return ParseDeclaration(Declarator::FileContext, DeclEnd, attrs); |
Douglas Gregor | 7306ebf | 2010-12-01 20:32:20 +0000 | [diff] [blame] | 720 | } |
| 721 | goto dont_know; |
| 722 | |
| 723 | case tok::kw_inline: |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 724 | if (getLangOpts().CPlusPlus) { |
Douglas Gregor | 7306ebf | 2010-12-01 20:32:20 +0000 | [diff] [blame] | 725 | tok::TokenKind NextKind = NextToken().getKind(); |
| 726 | |
| 727 | // Inline namespaces. Allowed as an extension even in C++03. |
| 728 | if (NextKind == tok::kw_namespace) { |
| 729 | SourceLocation DeclEnd; |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 730 | return ParseDeclaration(Declarator::FileContext, DeclEnd, attrs); |
Douglas Gregor | 7306ebf | 2010-12-01 20:32:20 +0000 | [diff] [blame] | 731 | } |
| 732 | |
| 733 | // Parse (then ignore) 'inline' prior to a template instantiation. This is |
| 734 | // a GCC extension that we intentionally do not support. |
| 735 | if (NextKind == tok::kw_template) { |
| 736 | Diag(ConsumeToken(), diag::warn_static_inline_explicit_inst_ignored) |
| 737 | << 1; |
| 738 | SourceLocation DeclEnd; |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 739 | return ParseDeclaration(Declarator::FileContext, DeclEnd, attrs); |
Douglas Gregor | 7306ebf | 2010-12-01 20:32:20 +0000 | [diff] [blame] | 740 | } |
Sebastian Redl | d078e64 | 2010-08-27 23:12:46 +0000 | [diff] [blame] | 741 | } |
| 742 | goto dont_know; |
| 743 | |
Douglas Gregor | 45f9655 | 2009-09-04 06:33:52 +0000 | [diff] [blame] | 744 | case tok::kw_extern: |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 745 | if (getLangOpts().CPlusPlus && NextToken().is(tok::kw_template)) { |
Douglas Gregor | 45f9655 | 2009-09-04 06:33:52 +0000 | [diff] [blame] | 746 | // Extern templates |
| 747 | SourceLocation ExternLoc = ConsumeToken(); |
| 748 | SourceLocation TemplateLoc = ConsumeToken(); |
Richard Smith | 80ad52f | 2013-01-02 11:42:31 +0000 | [diff] [blame] | 749 | Diag(ExternLoc, getLangOpts().CPlusPlus11 ? |
Richard Smith | 9324583 | 2011-10-20 18:35:58 +0000 | [diff] [blame] | 750 | diag::warn_cxx98_compat_extern_template : |
| 751 | diag::ext_extern_template) << SourceRange(ExternLoc, TemplateLoc); |
Douglas Gregor | 45f9655 | 2009-09-04 06:33:52 +0000 | [diff] [blame] | 752 | SourceLocation DeclEnd; |
| 753 | return Actions.ConvertDeclToDeclGroup( |
Argyrios Kyrtzidis | 9241057 | 2011-12-23 02:16:45 +0000 | [diff] [blame] | 754 | ParseExplicitInstantiation(Declarator::FileContext, |
| 755 | ExternLoc, TemplateLoc, DeclEnd)); |
Douglas Gregor | 45f9655 | 2009-09-04 06:33:52 +0000 | [diff] [blame] | 756 | } |
Sebastian Redl | d078e64 | 2010-08-27 23:12:46 +0000 | [diff] [blame] | 757 | goto dont_know; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 758 | |
Francois Pichet | f986038 | 2011-05-07 17:30:27 +0000 | [diff] [blame] | 759 | case tok::kw___if_exists: |
| 760 | case tok::kw___if_not_exists: |
Francois Pichet | 563a645 | 2011-05-25 10:19:49 +0000 | [diff] [blame] | 761 | ParseMicrosoftIfExistsExternalDeclaration(); |
Francois Pichet | f986038 | 2011-05-07 17:30:27 +0000 | [diff] [blame] | 762 | return DeclGroupPtrTy(); |
Douglas Gregor | 6aa52ec | 2011-08-26 23:56:07 +0000 | [diff] [blame] | 763 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 764 | default: |
Sebastian Redl | d078e64 | 2010-08-27 23:12:46 +0000 | [diff] [blame] | 765 | dont_know: |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 766 | // We can't tell whether this is a function-definition or declaration yet. |
Rafael Espindola | 20af49a | 2012-12-29 01:09:46 +0000 | [diff] [blame] | 767 | return ParseDeclarationOrFunctionDefinition(attrs, DS); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 768 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 769 | |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 770 | // This routine returns a DeclGroup, if the thing we parsed only contains a |
| 771 | // single decl, convert it now. |
| 772 | return Actions.ConvertDeclToDeclGroup(SingleDecl); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 773 | } |
| 774 | |
Douglas Gregor | 1426e53 | 2009-05-12 21:31:51 +0000 | [diff] [blame] | 775 | /// \brief Determine whether the current token, if it occurs after a |
| 776 | /// declarator, continues a declaration or declaration list. |
Sean Hunt | e4246a6 | 2011-05-12 06:15:49 +0000 | [diff] [blame] | 777 | bool Parser::isDeclarationAfterDeclarator() { |
| 778 | // Check for '= delete' or '= default' |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 779 | if (getLangOpts().CPlusPlus && Tok.is(tok::equal)) { |
Sean Hunt | e4246a6 | 2011-05-12 06:15:49 +0000 | [diff] [blame] | 780 | const Token &KW = NextToken(); |
| 781 | if (KW.is(tok::kw_default) || KW.is(tok::kw_delete)) |
| 782 | return false; |
| 783 | } |
Fariborz Jahanian | 6c89eaf | 2012-07-02 23:37:09 +0000 | [diff] [blame] | 784 | |
Douglas Gregor | 1426e53 | 2009-05-12 21:31:51 +0000 | [diff] [blame] | 785 | return Tok.is(tok::equal) || // int X()= -> not a function def |
| 786 | Tok.is(tok::comma) || // int X(), -> not a function def |
| 787 | Tok.is(tok::semi) || // int X(); -> not a function def |
| 788 | Tok.is(tok::kw_asm) || // int X() __asm__ -> not a function def |
| 789 | Tok.is(tok::kw___attribute) || // int X() __attr__ -> not a function def |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 790 | (getLangOpts().CPlusPlus && |
Fariborz Jahanian | 39700f8 | 2012-07-05 19:34:20 +0000 | [diff] [blame] | 791 | Tok.is(tok::l_paren)); // int X(0) -> not a function def [C++] |
Douglas Gregor | 1426e53 | 2009-05-12 21:31:51 +0000 | [diff] [blame] | 792 | } |
| 793 | |
| 794 | /// \brief Determine whether the current token, if it occurs after a |
| 795 | /// declarator, indicates the start of a function definition. |
Chris Lattner | 004659a | 2010-07-11 22:42:07 +0000 | [diff] [blame] | 796 | bool Parser::isStartOfFunctionDefinition(const ParsingDeclarator &Declarator) { |
Abramo Bagnara | 075f8f1 | 2010-12-10 16:29:40 +0000 | [diff] [blame] | 797 | assert(Declarator.isFunctionDeclarator() && "Isn't a function declarator"); |
Chris Lattner | 5d1c619 | 2009-12-06 18:34:27 +0000 | [diff] [blame] | 798 | if (Tok.is(tok::l_brace)) // int X() {} |
| 799 | return true; |
| 800 | |
Chris Lattner | 004659a | 2010-07-11 22:42:07 +0000 | [diff] [blame] | 801 | // Handle K&R C argument lists: int X(f) int f; {} |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 802 | if (!getLangOpts().CPlusPlus && |
Abramo Bagnara | 075f8f1 | 2010-12-10 16:29:40 +0000 | [diff] [blame] | 803 | Declarator.getFunctionTypeInfo().isKNRPrototype()) |
Chris Lattner | 004659a | 2010-07-11 22:42:07 +0000 | [diff] [blame] | 804 | return isDeclarationSpecifier(); |
Sean Hunt | e4246a6 | 2011-05-12 06:15:49 +0000 | [diff] [blame] | 805 | |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 806 | if (getLangOpts().CPlusPlus && Tok.is(tok::equal)) { |
Sean Hunt | e4246a6 | 2011-05-12 06:15:49 +0000 | [diff] [blame] | 807 | const Token &KW = NextToken(); |
| 808 | return KW.is(tok::kw_default) || KW.is(tok::kw_delete); |
| 809 | } |
Chris Lattner | 004659a | 2010-07-11 22:42:07 +0000 | [diff] [blame] | 810 | |
Chris Lattner | 5d1c619 | 2009-12-06 18:34:27 +0000 | [diff] [blame] | 811 | return Tok.is(tok::colon) || // X() : Base() {} (used for ctors) |
| 812 | Tok.is(tok::kw_try); // X() try { ... } |
Douglas Gregor | 1426e53 | 2009-05-12 21:31:51 +0000 | [diff] [blame] | 813 | } |
| 814 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 815 | /// ParseDeclarationOrFunctionDefinition - Parse either a function-definition or |
| 816 | /// 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] | 817 | /// compound-statement in function-definition. TemplateParams, if |
| 818 | /// non-NULL, provides the template parameters when we're parsing a |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 819 | /// C++ template-declaration. |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 820 | /// |
| 821 | /// function-definition: [C99 6.9.1] |
Chris Lattner | a798ebc | 2008-04-05 05:52:15 +0000 | [diff] [blame] | 822 | /// decl-specs declarator declaration-list[opt] compound-statement |
| 823 | /// [C90] function-definition: [C99 6.7.1] - implicit int result |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 824 | /// [C90] decl-specs[opt] declarator declaration-list[opt] compound-statement |
Chris Lattner | a798ebc | 2008-04-05 05:52:15 +0000 | [diff] [blame] | 825 | /// |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 826 | /// declaration: [C99 6.7] |
Chris Lattner | 697e15f | 2007-08-22 06:06:56 +0000 | [diff] [blame] | 827 | /// declaration-specifiers init-declarator-list[opt] ';' |
| 828 | /// [!C99] init-declarator-list ';' [TODO: warn in c99 mode] |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 829 | /// [OMP] threadprivate-directive [TODO] |
| 830 | /// |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 831 | Parser::DeclGroupPtrTy |
Sean Hunt | 2edf0a2 | 2012-06-23 05:07:58 +0000 | [diff] [blame] | 832 | Parser::ParseDeclOrFunctionDefInternal(ParsedAttributesWithRange &attrs, |
| 833 | ParsingDeclSpec &DS, |
| 834 | AccessSpecifier AS) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 835 | // Parse the common declaration-specifiers piece. |
Douglas Gregor | 0efc2c1 | 2010-01-13 17:31:36 +0000 | [diff] [blame] | 836 | ParseDeclarationSpecifiers(DS, ParsedTemplateInfo(), AS, DSC_top_level); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 837 | |
Bill Wendling | f0cc19f | 2013-11-19 22:56:43 +0000 | [diff] [blame] | 838 | // If we had a free-standing type definition with a missing semicolon, we |
| 839 | // may get this far before the problem becomes obvious. |
| 840 | if (DS.hasTagDefinition() && |
| 841 | DiagnoseMissingSemiAfterTagDefinition(DS, AS, DSC_top_level)) |
| 842 | return DeclGroupPtrTy(); |
| 843 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 844 | // C99 6.7.2.3p6: Handle "struct-or-union identifier;", "enum { X };" |
| 845 | // declaration-specifiers init-declarator-list[opt] ';' |
Chris Lattner | 0007322 | 2007-10-09 17:23:58 +0000 | [diff] [blame] | 846 | if (Tok.is(tok::semi)) { |
Sean Hunt | 2edf0a2 | 2012-06-23 05:07:58 +0000 | [diff] [blame] | 847 | ProhibitAttributes(attrs); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 848 | ConsumeToken(); |
John McCall | d226f65 | 2010-08-21 09:40:31 +0000 | [diff] [blame] | 849 | Decl *TheDecl = Actions.ParsedFreeStandingDeclSpec(getCurScope(), AS, DS); |
John McCall | 54abf7d | 2009-11-04 02:18:39 +0000 | [diff] [blame] | 850 | DS.complete(TheDecl); |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 851 | return Actions.ConvertDeclToDeclGroup(TheDecl); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 852 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 853 | |
Sean Hunt | 2edf0a2 | 2012-06-23 05:07:58 +0000 | [diff] [blame] | 854 | DS.takeAttributesFrom(attrs); |
| 855 | |
Daniel Dunbar | 246e70f | 2008-09-26 04:48:09 +0000 | [diff] [blame] | 856 | // ObjC2 allows prefix attributes on class interfaces and protocols. |
| 857 | // FIXME: This still needs better diagnostics. We should only accept |
| 858 | // attributes here, no types, etc. |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 859 | if (getLangOpts().ObjC2 && Tok.is(tok::at)) { |
Steve Naroff | dac269b | 2007-08-20 21:31:48 +0000 | [diff] [blame] | 860 | SourceLocation AtLoc = ConsumeToken(); // the "@" |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 861 | if (!Tok.isObjCAtKeyword(tok::objc_interface) && |
Daniel Dunbar | 246e70f | 2008-09-26 04:48:09 +0000 | [diff] [blame] | 862 | !Tok.isObjCAtKeyword(tok::objc_protocol)) { |
| 863 | Diag(Tok, diag::err_objc_unexpected_attr); |
Chris Lattner | cb53b36 | 2007-12-27 19:57:00 +0000 | [diff] [blame] | 864 | SkipUntil(tok::semi); // FIXME: better skip? |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 865 | return DeclGroupPtrTy(); |
Chris Lattner | cb53b36 | 2007-12-27 19:57:00 +0000 | [diff] [blame] | 866 | } |
John McCall | d8ac057 | 2009-11-03 19:26:08 +0000 | [diff] [blame] | 867 | |
John McCall | 54abf7d | 2009-11-04 02:18:39 +0000 | [diff] [blame] | 868 | DS.abort(); |
| 869 | |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 870 | const char *PrevSpec = nullptr; |
John McCall | fec5401 | 2009-08-03 20:12:06 +0000 | [diff] [blame] | 871 | unsigned DiagID; |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 872 | if (DS.SetTypeSpecType(DeclSpec::TST_unspecified, AtLoc, PrevSpec, DiagID, |
| 873 | Actions.getASTContext().getPrintingPolicy())) |
John McCall | fec5401 | 2009-08-03 20:12:06 +0000 | [diff] [blame] | 874 | Diag(AtLoc, DiagID) << PrevSpec; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 875 | |
Daniel Dunbar | 246e70f | 2008-09-26 04:48:09 +0000 | [diff] [blame] | 876 | if (Tok.isObjCAtKeyword(tok::objc_protocol)) |
Douglas Gregor | bd9482d | 2012-01-01 21:23:57 +0000 | [diff] [blame] | 877 | return ParseObjCAtProtocolDeclaration(AtLoc, DS.getAttributes()); |
| 878 | |
| 879 | return Actions.ConvertDeclToDeclGroup( |
| 880 | ParseObjCAtInterfaceDeclaration(AtLoc, DS.getAttributes())); |
Steve Naroff | dac269b | 2007-08-20 21:31:48 +0000 | [diff] [blame] | 881 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 882 | |
Chris Lattner | c6fdc34 | 2008-01-12 07:05:38 +0000 | [diff] [blame] | 883 | // If the declspec consisted only of 'extern' and we have a string |
| 884 | // literal following it, this must be a C++ linkage specifier like |
| 885 | // 'extern "C"'. |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 886 | if (getLangOpts().CPlusPlus && isTokenStringLiteral() && |
Chris Lattner | c6fdc34 | 2008-01-12 07:05:38 +0000 | [diff] [blame] | 887 | DS.getStorageClassSpec() == DeclSpec::SCS_extern && |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 888 | DS.getParsedSpecifiers() == DeclSpec::PQ_StorageClassSpecifier) { |
John McCall | d226f65 | 2010-08-21 09:40:31 +0000 | [diff] [blame] | 889 | Decl *TheDecl = ParseLinkage(DS, Declarator::FileContext); |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 890 | return Actions.ConvertDeclToDeclGroup(TheDecl); |
| 891 | } |
Chris Lattner | c6fdc34 | 2008-01-12 07:05:38 +0000 | [diff] [blame] | 892 | |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame] | 893 | return ParseDeclGroup(DS, Declarator::FileContext); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 894 | } |
| 895 | |
Fariborz Jahanian | 3acd9aa | 2009-12-09 21:39:38 +0000 | [diff] [blame] | 896 | Parser::DeclGroupPtrTy |
Sean Hunt | 2edf0a2 | 2012-06-23 05:07:58 +0000 | [diff] [blame] | 897 | Parser::ParseDeclarationOrFunctionDefinition(ParsedAttributesWithRange &attrs, |
| 898 | ParsingDeclSpec *DS, |
Fariborz Jahanian | 3acd9aa | 2009-12-09 21:39:38 +0000 | [diff] [blame] | 899 | AccessSpecifier AS) { |
Sean Hunt | 2edf0a2 | 2012-06-23 05:07:58 +0000 | [diff] [blame] | 900 | if (DS) { |
| 901 | return ParseDeclOrFunctionDefInternal(attrs, *DS, AS); |
| 902 | } else { |
| 903 | ParsingDeclSpec PDS(*this); |
| 904 | // Must temporarily exit the objective-c container scope for |
| 905 | // parsing c constructs and re-enter objc container scope |
| 906 | // afterwards. |
| 907 | ObjCDeclContextSwitch ObjCDC(*this); |
| 908 | |
| 909 | return ParseDeclOrFunctionDefInternal(attrs, PDS, AS); |
| 910 | } |
Fariborz Jahanian | 3acd9aa | 2009-12-09 21:39:38 +0000 | [diff] [blame] | 911 | } |
| 912 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 913 | /// ParseFunctionDefinition - We parsed and verified that the specified |
| 914 | /// Declarator is well formed. If this is a K&R-style function, read the |
| 915 | /// parameters declaration-list, then start the compound-statement. |
| 916 | /// |
Chris Lattner | a798ebc | 2008-04-05 05:52:15 +0000 | [diff] [blame] | 917 | /// function-definition: [C99 6.9.1] |
| 918 | /// decl-specs declarator declaration-list[opt] compound-statement |
| 919 | /// [C90] function-definition: [C99 6.7.1] - implicit int result |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 920 | /// [C90] decl-specs[opt] declarator declaration-list[opt] compound-statement |
Douglas Gregor | 7ad8390 | 2008-11-05 04:29:56 +0000 | [diff] [blame] | 921 | /// [C++] function-definition: [C++ 8.4] |
Chris Lattner | 23c4b18 | 2009-03-29 17:18:04 +0000 | [diff] [blame] | 922 | /// decl-specifier-seq[opt] declarator ctor-initializer[opt] |
| 923 | /// function-body |
Douglas Gregor | 7ad8390 | 2008-11-05 04:29:56 +0000 | [diff] [blame] | 924 | /// [C++] function-definition: [C++ 8.4] |
Sebastian Redl | d3a413d | 2009-04-26 20:35:05 +0000 | [diff] [blame] | 925 | /// decl-specifier-seq[opt] declarator function-try-block |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 926 | /// |
John McCall | d226f65 | 2010-08-21 09:40:31 +0000 | [diff] [blame] | 927 | Decl *Parser::ParseFunctionDefinition(ParsingDeclarator &D, |
DeLesley Hutchins | c24a233 | 2012-02-16 16:50:43 +0000 | [diff] [blame] | 928 | const ParsedTemplateInfo &TemplateInfo, |
| 929 | LateParsedAttrList *LateParsedAttrs) { |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame] | 930 | // Poison SEH identifiers so they are flagged as illegal in function bodies. |
John Wiegley | 28bbe4b | 2011-04-28 01:08:34 +0000 | [diff] [blame] | 931 | PoisonSEHIdentifiersRAIIObject PoisonSEHIdentifiers(*this, true); |
Abramo Bagnara | 075f8f1 | 2010-12-10 16:29:40 +0000 | [diff] [blame] | 932 | const DeclaratorChunk::FunctionTypeInfo &FTI = D.getFunctionTypeInfo(); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 933 | |
Chris Lattner | a798ebc | 2008-04-05 05:52:15 +0000 | [diff] [blame] | 934 | // If this is C90 and the declspecs were completely missing, fudge in an |
| 935 | // implicit int. We do this here because this is the only place where |
| 936 | // declaration-specifiers are completely optional in the grammar. |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 937 | if (getLangOpts().ImplicitInt && D.getDeclSpec().isEmpty()) { |
Chris Lattner | a798ebc | 2008-04-05 05:52:15 +0000 | [diff] [blame] | 938 | const char *PrevSpec; |
John McCall | fec5401 | 2009-08-03 20:12:06 +0000 | [diff] [blame] | 939 | unsigned DiagID; |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 940 | const PrintingPolicy &Policy = Actions.getASTContext().getPrintingPolicy(); |
Chris Lattner | 31c2868 | 2008-10-20 02:01:34 +0000 | [diff] [blame] | 941 | D.getMutableDeclSpec().SetTypeSpecType(DeclSpec::TST_int, |
| 942 | D.getIdentifierLoc(), |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 943 | PrevSpec, DiagID, |
| 944 | Policy); |
Sebastian Redl | ab197ba | 2009-02-09 18:23:29 +0000 | [diff] [blame] | 945 | D.SetRangeBegin(D.getDeclSpec().getSourceRange().getBegin()); |
Chris Lattner | a798ebc | 2008-04-05 05:52:15 +0000 | [diff] [blame] | 946 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 947 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 948 | // If this declaration was formed with a K&R-style identifier list for the |
| 949 | // arguments, parse declarations for all of the args next. |
| 950 | // int foo(a,b) int a; float b; {} |
Chris Lattner | 004659a | 2010-07-11 22:42:07 +0000 | [diff] [blame] | 951 | if (FTI.isKNRPrototype()) |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 952 | ParseKNRParamDeclarations(D); |
| 953 | |
Douglas Gregor | 7ad8390 | 2008-11-05 04:29:56 +0000 | [diff] [blame] | 954 | // We should have either an opening brace or, in a C++ constructor, |
| 955 | // we may have a colon. |
Douglas Gregor | 758afbc | 2011-02-04 11:57:16 +0000 | [diff] [blame] | 956 | if (Tok.isNot(tok::l_brace) && |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 957 | (!getLangOpts().CPlusPlus || |
Sean Hunt | cd10dec | 2011-05-23 23:14:04 +0000 | [diff] [blame] | 958 | (Tok.isNot(tok::colon) && Tok.isNot(tok::kw_try) && |
| 959 | Tok.isNot(tok::equal)))) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 960 | Diag(Tok, diag::err_expected_fn_body); |
| 961 | |
| 962 | // Skip over garbage, until we get to '{'. Don't eat the '{'. |
Alexey Bataev | 8fe2475 | 2013-11-18 08:17:37 +0000 | [diff] [blame] | 963 | SkipUntil(tok::l_brace, StopAtSemi | StopBeforeMatch); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 964 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 965 | // If we didn't find the '{', bail out. |
Chris Lattner | 0007322 | 2007-10-09 17:23:58 +0000 | [diff] [blame] | 966 | if (Tok.isNot(tok::l_brace)) |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 967 | return nullptr; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 968 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 969 | |
DeLesley Hutchins | c24a233 | 2012-02-16 16:50:43 +0000 | [diff] [blame] | 970 | // Check to make sure that any normal attributes are allowed to be on |
| 971 | // a definition. Late parsed attributes are checked at the end. |
| 972 | if (Tok.isNot(tok::equal)) { |
| 973 | AttributeList *DtorAttrs = D.getAttributes(); |
| 974 | while (DtorAttrs) { |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 975 | if (DtorAttrs->isKnownToGCC() && |
Richard Smith | cd8ab51 | 2013-01-17 01:30:42 +0000 | [diff] [blame] | 976 | !DtorAttrs->isCXX11Attribute()) { |
DeLesley Hutchins | c24a233 | 2012-02-16 16:50:43 +0000 | [diff] [blame] | 977 | Diag(DtorAttrs->getLoc(), diag::warn_attribute_on_function_definition) |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 978 | << DtorAttrs->getName(); |
DeLesley Hutchins | c24a233 | 2012-02-16 16:50:43 +0000 | [diff] [blame] | 979 | } |
| 980 | DtorAttrs = DtorAttrs->getNext(); |
| 981 | } |
| 982 | } |
| 983 | |
Francois Pichet | 8387e2a | 2011-04-22 22:18:13 +0000 | [diff] [blame] | 984 | // In delayed template parsing mode, for function template we consume the |
| 985 | // tokens and store them for late parsing at the end of the translation unit. |
David Majnemer | 645526c | 2013-10-23 21:31:20 +0000 | [diff] [blame] | 986 | if (getLangOpts().DelayedTemplateParsing && Tok.isNot(tok::equal) && |
| 987 | TemplateInfo.Kind == ParsedTemplateInfo::Template && |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 988 | Actions.canDelayFunctionBody(D)) { |
Benjamin Kramer | 5354e77 | 2012-08-23 23:38:35 +0000 | [diff] [blame] | 989 | MultiTemplateParamsArg TemplateParameterLists(*TemplateInfo.TemplateParams); |
Francois Pichet | 8387e2a | 2011-04-22 22:18:13 +0000 | [diff] [blame] | 990 | |
| 991 | ParseScope BodyScope(this, Scope::FnScope|Scope::DeclScope); |
| 992 | Scope *ParentScope = getCurScope()->getParent(); |
| 993 | |
Douglas Gregor | 45fa560 | 2011-11-07 20:56:01 +0000 | [diff] [blame] | 994 | D.setFunctionDefinitionKind(FDK_Definition); |
Francois Pichet | 8387e2a | 2011-04-22 22:18:13 +0000 | [diff] [blame] | 995 | Decl *DP = Actions.HandleDeclarator(ParentScope, D, |
Benjamin Kramer | 3fe198b | 2012-08-23 21:35:17 +0000 | [diff] [blame] | 996 | TemplateParameterLists); |
Francois Pichet | 8387e2a | 2011-04-22 22:18:13 +0000 | [diff] [blame] | 997 | D.complete(DP); |
| 998 | D.getMutableDeclSpec().abort(); |
| 999 | |
Richard Smith | ac32d90 | 2013-08-07 21:41:30 +0000 | [diff] [blame] | 1000 | CachedTokens Toks; |
| 1001 | LexTemplateFunctionForLateParsing(Toks); |
Francois Pichet | 8387e2a | 2011-04-22 22:18:13 +0000 | [diff] [blame] | 1002 | |
Richard Smith | ac32d90 | 2013-08-07 21:41:30 +0000 | [diff] [blame] | 1003 | if (DP) { |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1004 | FunctionDecl *FnD = DP->getAsFunction(); |
Richard Smith | ac32d90 | 2013-08-07 21:41:30 +0000 | [diff] [blame] | 1005 | Actions.CheckForFunctionRedefinition(FnD); |
| 1006 | Actions.MarkAsLateParsedTemplate(FnD, DP, Toks); |
Francois Pichet | 8387e2a | 2011-04-22 22:18:13 +0000 | [diff] [blame] | 1007 | } |
| 1008 | return DP; |
| 1009 | } |
Fariborz Jahanian | 2eb362b | 2012-08-10 18:10:56 +0000 | [diff] [blame] | 1010 | else if (CurParsedObjCImpl && |
Fariborz Jahanian | 9e5df31 | 2012-08-10 21:15:06 +0000 | [diff] [blame] | 1011 | !TemplateInfo.TemplateParams && |
| 1012 | (Tok.is(tok::l_brace) || Tok.is(tok::kw_try) || |
| 1013 | Tok.is(tok::colon)) && |
Fariborz Jahanian | be1d4ec | 2012-08-10 15:54:40 +0000 | [diff] [blame] | 1014 | Actions.CurContext->isTranslationUnit()) { |
Fariborz Jahanian | be1d4ec | 2012-08-10 15:54:40 +0000 | [diff] [blame] | 1015 | ParseScope BodyScope(this, Scope::FnScope|Scope::DeclScope); |
| 1016 | Scope *ParentScope = getCurScope()->getParent(); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1017 | |
Fariborz Jahanian | be1d4ec | 2012-08-10 15:54:40 +0000 | [diff] [blame] | 1018 | D.setFunctionDefinitionKind(FDK_Definition); |
| 1019 | Decl *FuncDecl = Actions.HandleDeclarator(ParentScope, D, |
Benjamin Kramer | 5354e77 | 2012-08-23 23:38:35 +0000 | [diff] [blame] | 1020 | MultiTemplateParamsArg()); |
Fariborz Jahanian | be1d4ec | 2012-08-10 15:54:40 +0000 | [diff] [blame] | 1021 | D.complete(FuncDecl); |
| 1022 | D.getMutableDeclSpec().abort(); |
| 1023 | if (FuncDecl) { |
| 1024 | // Consume the tokens and store them for later parsing. |
| 1025 | StashAwayMethodOrFunctionBodyTokens(FuncDecl); |
| 1026 | CurParsedObjCImpl->HasCFunction = true; |
| 1027 | return FuncDecl; |
| 1028 | } |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1029 | // FIXME: Should we really fall through here? |
Fariborz Jahanian | be1d4ec | 2012-08-10 15:54:40 +0000 | [diff] [blame] | 1030 | } |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1031 | |
Chris Lattner | b652cea | 2007-10-09 17:14:05 +0000 | [diff] [blame] | 1032 | // Enter a scope for the function body. |
Douglas Gregor | 8935b8b | 2008-12-10 06:34:36 +0000 | [diff] [blame] | 1033 | ParseScope BodyScope(this, Scope::FnScope|Scope::DeclScope); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 1034 | |
Chris Lattner | b652cea | 2007-10-09 17:14:05 +0000 | [diff] [blame] | 1035 | // Tell the actions module that we have entered a function definition with the |
| 1036 | // specified Declarator for the function. |
John McCall | d226f65 | 2010-08-21 09:40:31 +0000 | [diff] [blame] | 1037 | Decl *Res = TemplateInfo.TemplateParams? |
Douglas Gregor | 23c94db | 2010-07-02 17:43:08 +0000 | [diff] [blame] | 1038 | Actions.ActOnStartOfFunctionTemplateDef(getCurScope(), |
Benjamin Kramer | 5354e77 | 2012-08-23 23:38:35 +0000 | [diff] [blame] | 1039 | *TemplateInfo.TemplateParams, D) |
Douglas Gregor | 23c94db | 2010-07-02 17:43:08 +0000 | [diff] [blame] | 1040 | : Actions.ActOnStartOfFunctionDef(getCurScope(), D); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 1041 | |
John McCall | 54abf7d | 2009-11-04 02:18:39 +0000 | [diff] [blame] | 1042 | // Break out of the ParsingDeclarator context before we parse the body. |
| 1043 | D.complete(Res); |
| 1044 | |
| 1045 | // Break out of the ParsingDeclSpec context, too. This const_cast is |
| 1046 | // safe because we're always the sole owner. |
| 1047 | D.getMutableDeclSpec().abort(); |
| 1048 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1049 | if (TryConsumeToken(tok::equal)) { |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 1050 | assert(getLangOpts().CPlusPlus && "Only C++ function definitions have '='"); |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 1051 | |
Sean Hunt | cd10dec | 2011-05-23 23:14:04 +0000 | [diff] [blame] | 1052 | bool Delete = false; |
| 1053 | SourceLocation KWLoc; |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1054 | if (TryConsumeToken(tok::kw_delete, KWLoc)) { |
| 1055 | Diag(KWLoc, getLangOpts().CPlusPlus11 |
| 1056 | ? diag::warn_cxx98_compat_deleted_function |
| 1057 | : diag::ext_deleted_function); |
Sean Hunt | cd10dec | 2011-05-23 23:14:04 +0000 | [diff] [blame] | 1058 | Actions.SetDeclDeleted(Res, KWLoc); |
| 1059 | Delete = true; |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1060 | } else if (TryConsumeToken(tok::kw_default, KWLoc)) { |
| 1061 | Diag(KWLoc, getLangOpts().CPlusPlus11 |
| 1062 | ? diag::warn_cxx98_compat_defaulted_function |
| 1063 | : diag::ext_defaulted_function); |
Sean Hunt | cd10dec | 2011-05-23 23:14:04 +0000 | [diff] [blame] | 1064 | Actions.SetDeclDefaulted(Res, KWLoc); |
| 1065 | } else { |
| 1066 | llvm_unreachable("function definition after = not 'delete' or 'default'"); |
| 1067 | } |
| 1068 | |
| 1069 | if (Tok.is(tok::comma)) { |
| 1070 | Diag(KWLoc, diag::err_default_delete_in_multiple_declaration) |
| 1071 | << Delete; |
| 1072 | SkipUntil(tok::semi); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1073 | } else if (ExpectAndConsume(tok::semi, diag::err_expected_after, |
| 1074 | Delete ? "delete" : "default")) { |
| 1075 | SkipUntil(tok::semi); |
Sean Hunt | cd10dec | 2011-05-23 23:14:04 +0000 | [diff] [blame] | 1076 | } |
| 1077 | |
Pirama Arumuga Nainar | 3ea9e33 | 2015-04-08 08:57:32 -0700 | [diff] [blame] | 1078 | Stmt *GeneratedBody = Res ? Res->getBody() : nullptr; |
| 1079 | Actions.ActOnFinishFunctionBody(Res, GeneratedBody, false); |
Sean Hunt | cd10dec | 2011-05-23 23:14:04 +0000 | [diff] [blame] | 1080 | return Res; |
| 1081 | } |
| 1082 | |
Sebastian Redl | d3a413d | 2009-04-26 20:35:05 +0000 | [diff] [blame] | 1083 | if (Tok.is(tok::kw_try)) |
Douglas Gregor | c9977d0 | 2011-03-16 17:05:57 +0000 | [diff] [blame] | 1084 | return ParseFunctionTryBlock(Res, BodyScope); |
Sebastian Redl | d3a413d | 2009-04-26 20:35:05 +0000 | [diff] [blame] | 1085 | |
Douglas Gregor | 7ad8390 | 2008-11-05 04:29:56 +0000 | [diff] [blame] | 1086 | // If we have a colon, then we're probably parsing a C++ |
| 1087 | // ctor-initializer. |
John McCall | d6ca8da | 2010-04-10 07:37:23 +0000 | [diff] [blame] | 1088 | if (Tok.is(tok::colon)) { |
Douglas Gregor | 7ad8390 | 2008-11-05 04:29:56 +0000 | [diff] [blame] | 1089 | ParseConstructorInitializer(Res); |
John McCall | d6ca8da | 2010-04-10 07:37:23 +0000 | [diff] [blame] | 1090 | |
| 1091 | // Recover from error. |
| 1092 | if (!Tok.is(tok::l_brace)) { |
Douglas Gregor | c9977d0 | 2011-03-16 17:05:57 +0000 | [diff] [blame] | 1093 | BodyScope.Exit(); |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 1094 | Actions.ActOnFinishFunctionBody(Res, nullptr); |
John McCall | d6ca8da | 2010-04-10 07:37:23 +0000 | [diff] [blame] | 1095 | return Res; |
| 1096 | } |
| 1097 | } else |
Fariborz Jahanian | 393612e | 2009-07-21 22:36:06 +0000 | [diff] [blame] | 1098 | Actions.ActOnDefaultCtorInitializers(Res); |
Douglas Gregor | 7ad8390 | 2008-11-05 04:29:56 +0000 | [diff] [blame] | 1099 | |
DeLesley Hutchins | c24a233 | 2012-02-16 16:50:43 +0000 | [diff] [blame] | 1100 | // Late attributes are parsed in the same scope as the function body. |
| 1101 | if (LateParsedAttrs) |
| 1102 | ParseLexedAttributeList(*LateParsedAttrs, Res, false, true); |
| 1103 | |
Douglas Gregor | c9977d0 | 2011-03-16 17:05:57 +0000 | [diff] [blame] | 1104 | return ParseFunctionStatementBody(Res, BodyScope); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1105 | } |
| 1106 | |
| 1107 | /// ParseKNRParamDeclarations - Parse 'declaration-list[opt]' which provides |
| 1108 | /// types for a function with a K&R-style identifier list for arguments. |
| 1109 | void Parser::ParseKNRParamDeclarations(Declarator &D) { |
| 1110 | // We know that the top-level of this declarator is a function. |
Abramo Bagnara | 075f8f1 | 2010-12-10 16:29:40 +0000 | [diff] [blame] | 1111 | DeclaratorChunk::FunctionTypeInfo &FTI = D.getFunctionTypeInfo(); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1112 | |
Chris Lattner | 0442108 | 2008-04-08 04:40:51 +0000 | [diff] [blame] | 1113 | // Enter function-declaration scope, limiting any declarators to the |
| 1114 | // function prototype scope, including parameter declarators. |
Richard Smith | 3a2b7a1 | 2013-01-28 22:42:45 +0000 | [diff] [blame] | 1115 | ParseScope PrototypeScope(this, Scope::FunctionPrototypeScope | |
| 1116 | Scope::FunctionDeclarationScope | Scope::DeclScope); |
Chris Lattner | 0442108 | 2008-04-08 04:40:51 +0000 | [diff] [blame] | 1117 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1118 | // Read all the argument declarations. |
| 1119 | while (isDeclarationSpecifier()) { |
| 1120 | SourceLocation DSStart = Tok.getLocation(); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 1121 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1122 | // Parse the common declaration-specifiers piece. |
John McCall | 0b7e678 | 2011-03-24 11:26:52 +0000 | [diff] [blame] | 1123 | DeclSpec DS(AttrFactory); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1124 | ParseDeclarationSpecifiers(DS); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 1125 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1126 | // C99 6.9.1p6: 'each declaration in the declaration list shall have at |
| 1127 | // least one declarator'. |
| 1128 | // NOTE: GCC just makes this an ext-warn. It's not clear what it does with |
| 1129 | // the declarations though. It's trivial to ignore them, really hard to do |
| 1130 | // anything else with them. |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1131 | if (TryConsumeToken(tok::semi)) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1132 | Diag(DSStart, diag::err_declaration_does_not_declare_param); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1133 | continue; |
| 1134 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 1135 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1136 | // C99 6.9.1p6: Declarations shall contain no storage-class specifiers other |
| 1137 | // than register. |
| 1138 | if (DS.getStorageClassSpec() != DeclSpec::SCS_unspecified && |
| 1139 | DS.getStorageClassSpec() != DeclSpec::SCS_register) { |
| 1140 | Diag(DS.getStorageClassSpecLoc(), |
| 1141 | diag::err_invalid_storage_class_in_func_decl); |
| 1142 | DS.ClearStorageClassSpecs(); |
| 1143 | } |
Richard Smith | ec64244 | 2013-04-12 22:46:28 +0000 | [diff] [blame] | 1144 | if (DS.getThreadStorageClassSpec() != DeclSpec::TSCS_unspecified) { |
| 1145 | Diag(DS.getThreadStorageClassSpecLoc(), |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1146 | diag::err_invalid_storage_class_in_func_decl); |
| 1147 | DS.ClearStorageClassSpecs(); |
| 1148 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 1149 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1150 | // Parse the first declarator attached to this declspec. |
| 1151 | Declarator ParmDeclarator(DS, Declarator::KNRTypeListContext); |
| 1152 | ParseDeclarator(ParmDeclarator); |
| 1153 | |
| 1154 | // Handle the full declarator list. |
| 1155 | while (1) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1156 | // If attributes are present, parse them. |
John McCall | 7f040a9 | 2010-12-24 02:08:15 +0000 | [diff] [blame] | 1157 | MaybeParseGNUAttributes(ParmDeclarator); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 1158 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1159 | // Ask the actions module to compute the type for this declarator. |
John McCall | d226f65 | 2010-08-21 09:40:31 +0000 | [diff] [blame] | 1160 | Decl *Param = |
Douglas Gregor | 23c94db | 2010-07-02 17:43:08 +0000 | [diff] [blame] | 1161 | Actions.ActOnParamDeclarator(getCurScope(), ParmDeclarator); |
Manuel Klimek | 152b4e4 | 2013-08-22 12:12:24 +0000 | [diff] [blame] | 1162 | |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 1163 | if (Param && |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1164 | // A missing identifier has already been diagnosed. |
| 1165 | ParmDeclarator.getIdentifier()) { |
| 1166 | |
| 1167 | // Scan the argument list looking for the correct param to apply this |
| 1168 | // type. |
| 1169 | for (unsigned i = 0; ; ++i) { |
| 1170 | // C99 6.9.1p6: those declarators shall declare only identifiers from |
| 1171 | // the identifier list. |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1172 | if (i == FTI.NumParams) { |
Chris Lattner | 1ab3b96 | 2008-11-18 07:48:38 +0000 | [diff] [blame] | 1173 | Diag(ParmDeclarator.getIdentifierLoc(), diag::err_no_matching_param) |
Chris Lattner | 6898e33 | 2008-11-19 07:51:13 +0000 | [diff] [blame] | 1174 | << ParmDeclarator.getIdentifier(); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1175 | break; |
| 1176 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 1177 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1178 | if (FTI.Params[i].Ident == ParmDeclarator.getIdentifier()) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1179 | // Reject redefinitions of parameters. |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1180 | if (FTI.Params[i].Param) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1181 | Diag(ParmDeclarator.getIdentifierLoc(), |
Chris Lattner | 1ab3b96 | 2008-11-18 07:48:38 +0000 | [diff] [blame] | 1182 | diag::err_param_redefinition) |
Chris Lattner | 6898e33 | 2008-11-19 07:51:13 +0000 | [diff] [blame] | 1183 | << ParmDeclarator.getIdentifier(); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1184 | } else { |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1185 | FTI.Params[i].Param = Param; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1186 | } |
| 1187 | break; |
| 1188 | } |
| 1189 | } |
| 1190 | } |
| 1191 | |
| 1192 | // If we don't have a comma, it is either the end of the list (a ';') or |
| 1193 | // an error, bail out. |
Chris Lattner | 0007322 | 2007-10-09 17:23:58 +0000 | [diff] [blame] | 1194 | if (Tok.isNot(tok::comma)) |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1195 | break; |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 1196 | |
Richard Smith | 7984de3 | 2012-01-12 23:53:29 +0000 | [diff] [blame] | 1197 | ParmDeclarator.clear(); |
| 1198 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1199 | // Consume the comma. |
Richard Smith | 7984de3 | 2012-01-12 23:53:29 +0000 | [diff] [blame] | 1200 | ParmDeclarator.setCommaLoc(ConsumeToken()); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 1201 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1202 | // Parse the next declarator. |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1203 | ParseDeclarator(ParmDeclarator); |
| 1204 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 1205 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1206 | // Consume ';' and continue parsing. |
| 1207 | if (!ExpectAndConsumeSemi(diag::err_expected_semi_declaration)) |
| 1208 | continue; |
| 1209 | |
| 1210 | // Otherwise recover by skipping to next semi or mandatory function body. |
| 1211 | if (SkipUntil(tok::l_brace, StopAtSemi | StopBeforeMatch)) |
| 1212 | break; |
| 1213 | TryConsumeToken(tok::semi); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1214 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 1215 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1216 | // The actions module must verify that all arguments were declared. |
Douglas Gregor | 23c94db | 2010-07-02 17:43:08 +0000 | [diff] [blame] | 1217 | Actions.ActOnFinishKNRParamDeclarations(getCurScope(), D, Tok.getLocation()); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1218 | } |
| 1219 | |
| 1220 | |
| 1221 | /// ParseAsmStringLiteral - This is just a normal string-literal, but is not |
| 1222 | /// allowed to be a wide string, and is not subject to character translation. |
| 1223 | /// |
| 1224 | /// [GNU] asm-string-literal: |
| 1225 | /// string-literal |
| 1226 | /// |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 1227 | ExprResult Parser::ParseAsmStringLiteral() { |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame] | 1228 | if (!isTokenStringLiteral()) { |
| 1229 | Diag(Tok, diag::err_expected_string_literal) |
| 1230 | << /*Source='in...'*/0 << "'asm'"; |
| 1231 | return ExprError(); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1232 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 1233 | |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame] | 1234 | ExprResult AsmString(ParseStringLiteralExpression()); |
| 1235 | if (!AsmString.isInvalid()) { |
| 1236 | const auto *SL = cast<StringLiteral>(AsmString.get()); |
| 1237 | if (!SL->isAscii()) { |
| 1238 | Diag(Tok, diag::err_asm_operand_wide_string_literal) |
| 1239 | << SL->isWide() |
| 1240 | << SL->getSourceRange(); |
| 1241 | return ExprError(); |
| 1242 | } |
| 1243 | } |
| 1244 | return AsmString; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1245 | } |
| 1246 | |
| 1247 | /// ParseSimpleAsm |
| 1248 | /// |
| 1249 | /// [GNU] simple-asm-expr: |
| 1250 | /// 'asm' '(' asm-string-literal ')' |
| 1251 | /// |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 1252 | ExprResult Parser::ParseSimpleAsm(SourceLocation *EndLoc) { |
Chris Lattner | 0007322 | 2007-10-09 17:23:58 +0000 | [diff] [blame] | 1253 | assert(Tok.is(tok::kw_asm) && "Not an asm!"); |
Anders Carlsson | dfab6cb | 2008-02-08 00:33:21 +0000 | [diff] [blame] | 1254 | SourceLocation Loc = ConsumeToken(); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 1255 | |
John McCall | 7a6ae74 | 2010-01-25 22:27:48 +0000 | [diff] [blame] | 1256 | if (Tok.is(tok::kw_volatile)) { |
John McCall | 841d5e6 | 2010-01-25 23:12:50 +0000 | [diff] [blame] | 1257 | // Remove from the end of 'asm' to the end of 'volatile'. |
| 1258 | SourceRange RemovalRange(PP.getLocForEndOfToken(Loc), |
| 1259 | PP.getLocForEndOfToken(Tok.getLocation())); |
| 1260 | |
| 1261 | Diag(Tok, diag::warn_file_asm_volatile) |
Douglas Gregor | 849b243 | 2010-03-31 17:46:05 +0000 | [diff] [blame] | 1262 | << FixItHint::CreateRemoval(RemovalRange); |
John McCall | 7a6ae74 | 2010-01-25 22:27:48 +0000 | [diff] [blame] | 1263 | ConsumeToken(); |
| 1264 | } |
| 1265 | |
Douglas Gregor | 4a8dfb5 | 2011-10-12 16:37:45 +0000 | [diff] [blame] | 1266 | BalancedDelimiterTracker T(*this, tok::l_paren); |
| 1267 | if (T.consumeOpen()) { |
Chris Lattner | 1ab3b96 | 2008-11-18 07:48:38 +0000 | [diff] [blame] | 1268 | Diag(Tok, diag::err_expected_lparen_after) << "asm"; |
Sebastian Redl | 61364dd | 2008-12-11 19:30:53 +0000 | [diff] [blame] | 1269 | return ExprError(); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1270 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 1271 | |
John McCall | 60d7b3a | 2010-08-24 06:29:42 +0000 | [diff] [blame] | 1272 | ExprResult Result(ParseAsmStringLiteral()); |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 1273 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1274 | if (!Result.isInvalid()) { |
Douglas Gregor | 4a8dfb5 | 2011-10-12 16:37:45 +0000 | [diff] [blame] | 1275 | // Close the paren and get the location of the end bracket |
| 1276 | T.consumeClose(); |
Sebastian Redl | ab197ba | 2009-02-09 18:23:29 +0000 | [diff] [blame] | 1277 | if (EndLoc) |
Douglas Gregor | 4a8dfb5 | 2011-10-12 16:37:45 +0000 | [diff] [blame] | 1278 | *EndLoc = T.getCloseLocation(); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1279 | } else if (SkipUntil(tok::r_paren, StopAtSemi | StopBeforeMatch)) { |
| 1280 | if (EndLoc) |
| 1281 | *EndLoc = Tok.getLocation(); |
| 1282 | ConsumeParen(); |
Sebastian Redl | ab197ba | 2009-02-09 18:23:29 +0000 | [diff] [blame] | 1283 | } |
Mike Stump | a6f0177 | 2008-06-19 19:28:49 +0000 | [diff] [blame] | 1284 | |
Benjamin Kramer | 3fe198b | 2012-08-23 21:35:17 +0000 | [diff] [blame] | 1285 | return Result; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1286 | } |
| 1287 | |
Argyrios Kyrtzidis | 25a7676 | 2011-06-22 06:09:49 +0000 | [diff] [blame] | 1288 | /// \brief Get the TemplateIdAnnotation from the token and put it in the |
| 1289 | /// cleanup pool so that it gets destroyed when parsing the current top level |
| 1290 | /// declaration is finished. |
| 1291 | TemplateIdAnnotation *Parser::takeTemplateIdAnnotation(const Token &tok) { |
| 1292 | assert(tok.is(tok::annot_template_id) && "Expected template-id token"); |
| 1293 | TemplateIdAnnotation * |
| 1294 | Id = static_cast<TemplateIdAnnotation *>(tok.getAnnotationValue()); |
Argyrios Kyrtzidis | 25a7676 | 2011-06-22 06:09:49 +0000 | [diff] [blame] | 1295 | return Id; |
| 1296 | } |
| 1297 | |
Richard Smith | 0576681 | 2012-08-18 00:55:03 +0000 | [diff] [blame] | 1298 | void Parser::AnnotateScopeToken(CXXScopeSpec &SS, bool IsNewAnnotation) { |
| 1299 | // Push the current token back into the token stream (or revert it if it is |
| 1300 | // cached) and use an annotation scope token for current token. |
| 1301 | if (PP.isBacktrackEnabled()) |
| 1302 | PP.RevertCachedTokens(1); |
| 1303 | else |
| 1304 | PP.EnterToken(Tok); |
| 1305 | Tok.setKind(tok::annot_cxxscope); |
| 1306 | Tok.setAnnotationValue(Actions.SaveNestedNameSpecifierAnnotation(SS)); |
| 1307 | Tok.setAnnotationRange(SS.getRange()); |
| 1308 | |
| 1309 | // In case the tokens were cached, have Preprocessor replace them |
| 1310 | // with the annotation token. We don't need to do this if we've |
| 1311 | // just reverted back to a prior state. |
| 1312 | if (IsNewAnnotation) |
| 1313 | PP.AnnotateCachedTokens(Tok); |
| 1314 | } |
| 1315 | |
| 1316 | /// \brief Attempt to classify the name at the current token position. This may |
| 1317 | /// form a type, scope or primary expression annotation, or replace the token |
| 1318 | /// with a typo-corrected keyword. This is only appropriate when the current |
| 1319 | /// name must refer to an entity which has already been declared. |
| 1320 | /// |
| 1321 | /// \param IsAddressOfOperand Must be \c true if the name is preceded by an '&' |
| 1322 | /// and might possibly have a dependent nested name specifier. |
| 1323 | /// \param CCC Indicates how to perform typo-correction for this name. If NULL, |
| 1324 | /// no typo correction will be performed. |
| 1325 | Parser::AnnotatedNameKind |
| 1326 | Parser::TryAnnotateName(bool IsAddressOfOperand, |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 1327 | std::unique_ptr<CorrectionCandidateCallback> CCC) { |
Richard Smith | 0576681 | 2012-08-18 00:55:03 +0000 | [diff] [blame] | 1328 | assert(Tok.is(tok::identifier) || Tok.is(tok::annot_cxxscope)); |
| 1329 | |
| 1330 | const bool EnteringContext = false; |
| 1331 | const bool WasScopeAnnotation = Tok.is(tok::annot_cxxscope); |
| 1332 | |
| 1333 | CXXScopeSpec SS; |
| 1334 | if (getLangOpts().CPlusPlus && |
| 1335 | ParseOptionalCXXScopeSpecifier(SS, ParsedType(), EnteringContext)) |
| 1336 | return ANK_Error; |
| 1337 | |
| 1338 | if (Tok.isNot(tok::identifier) || SS.isInvalid()) { |
| 1339 | if (TryAnnotateTypeOrScopeTokenAfterScopeSpec(EnteringContext, false, SS, |
| 1340 | !WasScopeAnnotation)) |
| 1341 | return ANK_Error; |
| 1342 | return ANK_Unresolved; |
| 1343 | } |
| 1344 | |
| 1345 | IdentifierInfo *Name = Tok.getIdentifierInfo(); |
| 1346 | SourceLocation NameLoc = Tok.getLocation(); |
| 1347 | |
| 1348 | // FIXME: Move the tentative declaration logic into ClassifyName so we can |
| 1349 | // typo-correct to tentatively-declared identifiers. |
| 1350 | if (isTentativelyDeclared(Name)) { |
| 1351 | // Identifier has been tentatively declared, and thus cannot be resolved as |
| 1352 | // an expression. Fall back to annotating it as a type. |
| 1353 | if (TryAnnotateTypeOrScopeTokenAfterScopeSpec(EnteringContext, false, SS, |
| 1354 | !WasScopeAnnotation)) |
| 1355 | return ANK_Error; |
| 1356 | return Tok.is(tok::annot_typename) ? ANK_Success : ANK_TentativeDecl; |
| 1357 | } |
| 1358 | |
| 1359 | Token Next = NextToken(); |
| 1360 | |
| 1361 | // Look up and classify the identifier. We don't perform any typo-correction |
| 1362 | // after a scope specifier, because in general we can't recover from typos |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1363 | // there (eg, after correcting 'A::tempalte B<X>::C' [sic], we would need to |
| 1364 | // jump back into scope specifier parsing). |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 1365 | Sema::NameClassification Classification = Actions.ClassifyName( |
| 1366 | getCurScope(), SS, Name, NameLoc, Next, IsAddressOfOperand, |
| 1367 | SS.isEmpty() ? std::move(CCC) : nullptr); |
Richard Smith | 0576681 | 2012-08-18 00:55:03 +0000 | [diff] [blame] | 1368 | |
| 1369 | switch (Classification.getKind()) { |
| 1370 | case Sema::NC_Error: |
| 1371 | return ANK_Error; |
| 1372 | |
| 1373 | case Sema::NC_Keyword: |
| 1374 | // The identifier was typo-corrected to a keyword. |
| 1375 | Tok.setIdentifierInfo(Name); |
| 1376 | Tok.setKind(Name->getTokenID()); |
| 1377 | PP.TypoCorrectToken(Tok); |
| 1378 | if (SS.isNotEmpty()) |
| 1379 | AnnotateScopeToken(SS, !WasScopeAnnotation); |
| 1380 | // We've "annotated" this as a keyword. |
| 1381 | return ANK_Success; |
| 1382 | |
| 1383 | case Sema::NC_Unknown: |
| 1384 | // It's not something we know about. Leave it unannotated. |
| 1385 | break; |
| 1386 | |
| 1387 | case Sema::NC_Type: |
| 1388 | Tok.setKind(tok::annot_typename); |
| 1389 | setTypeAnnotation(Tok, Classification.getType()); |
| 1390 | Tok.setAnnotationEndLoc(NameLoc); |
| 1391 | if (SS.isNotEmpty()) |
| 1392 | Tok.setLocation(SS.getBeginLoc()); |
| 1393 | PP.AnnotateCachedTokens(Tok); |
| 1394 | return ANK_Success; |
| 1395 | |
| 1396 | case Sema::NC_Expression: |
| 1397 | Tok.setKind(tok::annot_primary_expr); |
| 1398 | setExprAnnotation(Tok, Classification.getExpression()); |
| 1399 | Tok.setAnnotationEndLoc(NameLoc); |
| 1400 | if (SS.isNotEmpty()) |
| 1401 | Tok.setLocation(SS.getBeginLoc()); |
| 1402 | PP.AnnotateCachedTokens(Tok); |
| 1403 | return ANK_Success; |
| 1404 | |
| 1405 | case Sema::NC_TypeTemplate: |
| 1406 | if (Next.isNot(tok::less)) { |
| 1407 | // This may be a type template being used as a template template argument. |
| 1408 | if (SS.isNotEmpty()) |
| 1409 | AnnotateScopeToken(SS, !WasScopeAnnotation); |
| 1410 | return ANK_TemplateName; |
| 1411 | } |
| 1412 | // Fall through. |
Larisse Voufo | ef4579c | 2013-08-06 01:03:05 +0000 | [diff] [blame] | 1413 | case Sema::NC_VarTemplate: |
Richard Smith | 0576681 | 2012-08-18 00:55:03 +0000 | [diff] [blame] | 1414 | case Sema::NC_FunctionTemplate: { |
Larisse Voufo | ef4579c | 2013-08-06 01:03:05 +0000 | [diff] [blame] | 1415 | // We have a type, variable or function template followed by '<'. |
Richard Smith | 0576681 | 2012-08-18 00:55:03 +0000 | [diff] [blame] | 1416 | ConsumeToken(); |
| 1417 | UnqualifiedId Id; |
| 1418 | Id.setIdentifier(Name, NameLoc); |
| 1419 | if (AnnotateTemplateIdToken( |
| 1420 | TemplateTy::make(Classification.getTemplateName()), |
| 1421 | Classification.getTemplateNameKind(), SS, SourceLocation(), Id)) |
| 1422 | return ANK_Error; |
| 1423 | return ANK_Success; |
| 1424 | } |
| 1425 | |
| 1426 | case Sema::NC_NestedNameSpecifier: |
| 1427 | llvm_unreachable("already parsed nested name specifier"); |
| 1428 | } |
| 1429 | |
| 1430 | // Unable to classify the name, but maybe we can annotate a scope specifier. |
| 1431 | if (SS.isNotEmpty()) |
| 1432 | AnnotateScopeToken(SS, !WasScopeAnnotation); |
| 1433 | return ANK_Unresolved; |
| 1434 | } |
| 1435 | |
Bill Wendling | 03e463e | 2013-12-16 02:32:55 +0000 | [diff] [blame] | 1436 | bool Parser::TryKeywordIdentFallback(bool DisableKeyword) { |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 1437 | assert(Tok.isNot(tok::identifier)); |
Bill Wendling | 03e463e | 2013-12-16 02:32:55 +0000 | [diff] [blame] | 1438 | Diag(Tok, diag::ext_keyword_as_ident) |
| 1439 | << PP.getSpelling(Tok) |
| 1440 | << DisableKeyword; |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 1441 | if (DisableKeyword) |
| 1442 | Tok.getIdentifierInfo()->RevertTokenIDToIdentifier(); |
Bill Wendling | 03e463e | 2013-12-16 02:32:55 +0000 | [diff] [blame] | 1443 | Tok.setKind(tok::identifier); |
| 1444 | return true; |
| 1445 | } |
| 1446 | |
Argyrios Kyrtzidis | eb83ecd | 2008-11-08 16:45:02 +0000 | [diff] [blame] | 1447 | /// TryAnnotateTypeOrScopeToken - If the current token position is on a |
| 1448 | /// typename (possibly qualified in C++) or a C++ scope specifier not followed |
| 1449 | /// by a typename, TryAnnotateTypeOrScopeToken will replace one or more tokens |
| 1450 | /// with a single annotation token representing the typename or C++ scope |
| 1451 | /// respectively. |
| 1452 | /// This simplifies handling of C++ scope specifiers and allows efficient |
| 1453 | /// backtracking without the need to re-parse and resolve nested-names and |
| 1454 | /// typenames. |
Argyrios Kyrtzidis | 44802cc | 2008-11-26 21:51:07 +0000 | [diff] [blame] | 1455 | /// It will mainly be called when we expect to treat identifiers as typenames |
| 1456 | /// (if they are typenames). For example, in C we do not expect identifiers |
| 1457 | /// inside expressions to be treated as typenames so it will not be called |
| 1458 | /// for expressions in C. |
| 1459 | /// 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] | 1460 | /// 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] | 1461 | /// will not be called twice, once to check whether we have a declaration |
| 1462 | /// specifier, and another one to get the actual type inside |
| 1463 | /// ParseDeclarationSpecifiers). |
Chris Lattner | a7bc7c8 | 2009-01-04 23:23:14 +0000 | [diff] [blame] | 1464 | /// |
John McCall | 9ba6166 | 2010-02-26 08:45:28 +0000 | [diff] [blame] | 1465 | /// This returns true if an error occurred. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1466 | /// |
Chris Lattner | 55a7cef | 2009-01-05 00:13:00 +0000 | [diff] [blame] | 1467 | /// Note that this routine emits an error if you call it with ::new or ::delete |
| 1468 | /// 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] | 1469 | bool Parser::TryAnnotateTypeOrScopeToken(bool EnteringContext, bool NeedType) { |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 1470 | assert((Tok.is(tok::identifier) || Tok.is(tok::coloncolon) || |
| 1471 | Tok.is(tok::kw_typename) || Tok.is(tok::annot_cxxscope) || |
| 1472 | Tok.is(tok::kw_decltype) || Tok.is(tok::annot_template_id) || |
| 1473 | Tok.is(tok::kw___super)) && |
| 1474 | "Cannot be a type or scope token!"); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1475 | |
Douglas Gregor | d57959a | 2009-03-27 23:10:48 +0000 | [diff] [blame] | 1476 | if (Tok.is(tok::kw_typename)) { |
David Majnemer | 67ac998 | 2013-09-03 22:36:22 +0000 | [diff] [blame] | 1477 | // MSVC lets you do stuff like: |
| 1478 | // typename typedef T_::D D; |
| 1479 | // |
| 1480 | // We will consume the typedef token here and put it back after we have |
| 1481 | // parsed the first identifier, transforming it into something more like: |
| 1482 | // typename T_::D typedef D; |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1483 | if (getLangOpts().MSVCCompat && NextToken().is(tok::kw_typedef)) { |
David Majnemer | 67ac998 | 2013-09-03 22:36:22 +0000 | [diff] [blame] | 1484 | Token TypedefToken; |
| 1485 | PP.Lex(TypedefToken); |
| 1486 | bool Result = TryAnnotateTypeOrScopeToken(EnteringContext, NeedType); |
| 1487 | PP.EnterToken(Tok); |
| 1488 | Tok = TypedefToken; |
| 1489 | if (!Result) |
| 1490 | Diag(Tok.getLocation(), diag::warn_expected_qualified_after_typename); |
| 1491 | return Result; |
| 1492 | } |
| 1493 | |
Douglas Gregor | d57959a | 2009-03-27 23:10:48 +0000 | [diff] [blame] | 1494 | // Parse a C++ typename-specifier, e.g., "typename T::type". |
| 1495 | // |
| 1496 | // typename-specifier: |
| 1497 | // 'typename' '::' [opt] nested-name-specifier identifier |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1498 | // 'typename' '::' [opt] nested-name-specifier template [opt] |
Douglas Gregor | 1734317 | 2009-04-01 00:28:59 +0000 | [diff] [blame] | 1499 | // simple-template-id |
Douglas Gregor | d57959a | 2009-03-27 23:10:48 +0000 | [diff] [blame] | 1500 | SourceLocation TypenameLoc = ConsumeToken(); |
| 1501 | CXXScopeSpec SS; |
Douglas Gregor | efaa93a | 2011-11-07 17:33:42 +0000 | [diff] [blame] | 1502 | if (ParseOptionalCXXScopeSpecifier(SS, /*ObjectType=*/ParsedType(), |
| 1503 | /*EnteringContext=*/false, |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 1504 | nullptr, /*IsTypename*/ true)) |
John McCall | 9ba6166 | 2010-02-26 08:45:28 +0000 | [diff] [blame] | 1505 | return true; |
| 1506 | if (!SS.isSet()) { |
Francois Pichet | b67e7fc | 2012-07-22 15:10:57 +0000 | [diff] [blame] | 1507 | if (Tok.is(tok::identifier) || Tok.is(tok::annot_template_id) || |
| 1508 | Tok.is(tok::annot_decltype)) { |
Richard Smith | 2375677 | 2012-05-14 22:43:34 +0000 | [diff] [blame] | 1509 | // Attempt to recover by skipping the invalid 'typename' |
Francois Pichet | b67e7fc | 2012-07-22 15:10:57 +0000 | [diff] [blame] | 1510 | if (Tok.is(tok::annot_decltype) || |
| 1511 | (!TryAnnotateTypeOrScopeToken(EnteringContext, NeedType) && |
David Majnemer | 67ac998 | 2013-09-03 22:36:22 +0000 | [diff] [blame] | 1512 | Tok.isAnnotation())) { |
Richard Smith | 2375677 | 2012-05-14 22:43:34 +0000 | [diff] [blame] | 1513 | unsigned DiagID = diag::err_expected_qualified_after_typename; |
| 1514 | // MS compatibility: MSVC permits using known types with typename. |
| 1515 | // e.g. "typedef typename T* pointer_type" |
| 1516 | if (getLangOpts().MicrosoftExt) |
| 1517 | DiagID = diag::warn_expected_qualified_after_typename; |
| 1518 | Diag(Tok.getLocation(), DiagID); |
| 1519 | return false; |
| 1520 | } |
| 1521 | } |
| 1522 | |
| 1523 | Diag(Tok.getLocation(), diag::err_expected_qualified_after_typename); |
John McCall | 9ba6166 | 2010-02-26 08:45:28 +0000 | [diff] [blame] | 1524 | return true; |
Douglas Gregor | d57959a | 2009-03-27 23:10:48 +0000 | [diff] [blame] | 1525 | } |
| 1526 | |
| 1527 | TypeResult Ty; |
| 1528 | if (Tok.is(tok::identifier)) { |
| 1529 | // FIXME: check whether the next token is '<', first! |
Douglas Gregor | 23c94db | 2010-07-02 17:43:08 +0000 | [diff] [blame] | 1530 | Ty = Actions.ActOnTypenameType(getCurScope(), TypenameLoc, SS, |
Douglas Gregor | 1a15dae | 2010-06-16 22:31:08 +0000 | [diff] [blame] | 1531 | *Tok.getIdentifierInfo(), |
Douglas Gregor | d57959a | 2009-03-27 23:10:48 +0000 | [diff] [blame] | 1532 | Tok.getLocation()); |
Douglas Gregor | 1734317 | 2009-04-01 00:28:59 +0000 | [diff] [blame] | 1533 | } else if (Tok.is(tok::annot_template_id)) { |
Argyrios Kyrtzidis | 25a7676 | 2011-06-22 06:09:49 +0000 | [diff] [blame] | 1534 | TemplateIdAnnotation *TemplateId = takeTemplateIdAnnotation(Tok); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1535 | if (TemplateId->Kind != TNK_Type_template && |
| 1536 | TemplateId->Kind != TNK_Dependent_template_name) { |
Douglas Gregor | 1734317 | 2009-04-01 00:28:59 +0000 | [diff] [blame] | 1537 | Diag(Tok, diag::err_typename_refers_to_non_type_template) |
| 1538 | << Tok.getAnnotationRange(); |
John McCall | 9ba6166 | 2010-02-26 08:45:28 +0000 | [diff] [blame] | 1539 | return true; |
Douglas Gregor | 1734317 | 2009-04-01 00:28:59 +0000 | [diff] [blame] | 1540 | } |
Douglas Gregor | d57959a | 2009-03-27 23:10:48 +0000 | [diff] [blame] | 1541 | |
Benjamin Kramer | 5354e77 | 2012-08-23 23:38:35 +0000 | [diff] [blame] | 1542 | ASTTemplateArgsPtr TemplateArgsPtr(TemplateId->getTemplateArgs(), |
Douglas Gregor | a02411e | 2011-02-27 22:46:49 +0000 | [diff] [blame] | 1543 | TemplateId->NumArgs); |
Abramo Bagnara | 66581d4 | 2012-02-06 22:45:07 +0000 | [diff] [blame] | 1544 | |
Douglas Gregor | a02411e | 2011-02-27 22:46:49 +0000 | [diff] [blame] | 1545 | Ty = Actions.ActOnTypenameType(getCurScope(), TypenameLoc, SS, |
Abramo Bagnara | 66581d4 | 2012-02-06 22:45:07 +0000 | [diff] [blame] | 1546 | TemplateId->TemplateKWLoc, |
Douglas Gregor | a02411e | 2011-02-27 22:46:49 +0000 | [diff] [blame] | 1547 | TemplateId->Template, |
| 1548 | TemplateId->TemplateNameLoc, |
| 1549 | TemplateId->LAngleLoc, |
Abramo Bagnara | 66581d4 | 2012-02-06 22:45:07 +0000 | [diff] [blame] | 1550 | TemplateArgsPtr, |
Douglas Gregor | a02411e | 2011-02-27 22:46:49 +0000 | [diff] [blame] | 1551 | TemplateId->RAngleLoc); |
Douglas Gregor | 1734317 | 2009-04-01 00:28:59 +0000 | [diff] [blame] | 1552 | } else { |
| 1553 | Diag(Tok, diag::err_expected_type_name_after_typename) |
| 1554 | << SS.getRange(); |
John McCall | 9ba6166 | 2010-02-26 08:45:28 +0000 | [diff] [blame] | 1555 | return true; |
Douglas Gregor | 1734317 | 2009-04-01 00:28:59 +0000 | [diff] [blame] | 1556 | } |
| 1557 | |
Sebastian Redl | 39d6711 | 2010-02-08 19:35:18 +0000 | [diff] [blame] | 1558 | SourceLocation EndLoc = Tok.getLastLoc(); |
Douglas Gregor | 1734317 | 2009-04-01 00:28:59 +0000 | [diff] [blame] | 1559 | Tok.setKind(tok::annot_typename); |
John McCall | b3d8748 | 2010-08-24 05:47:05 +0000 | [diff] [blame] | 1560 | setTypeAnnotation(Tok, Ty.isInvalid() ? ParsedType() : Ty.get()); |
Sebastian Redl | 39d6711 | 2010-02-08 19:35:18 +0000 | [diff] [blame] | 1561 | Tok.setAnnotationEndLoc(EndLoc); |
Douglas Gregor | 1734317 | 2009-04-01 00:28:59 +0000 | [diff] [blame] | 1562 | Tok.setLocation(TypenameLoc); |
| 1563 | PP.AnnotateCachedTokens(Tok); |
John McCall | 9ba6166 | 2010-02-26 08:45:28 +0000 | [diff] [blame] | 1564 | return false; |
Douglas Gregor | d57959a | 2009-03-27 23:10:48 +0000 | [diff] [blame] | 1565 | } |
| 1566 | |
John McCall | ae03cb5 | 2009-12-19 00:35:18 +0000 | [diff] [blame] | 1567 | // Remembers whether the token was originally a scope annotation. |
Richard Smith | 0576681 | 2012-08-18 00:55:03 +0000 | [diff] [blame] | 1568 | bool WasScopeAnnotation = Tok.is(tok::annot_cxxscope); |
John McCall | ae03cb5 | 2009-12-19 00:35:18 +0000 | [diff] [blame] | 1569 | |
Argyrios Kyrtzidis | eb83ecd | 2008-11-08 16:45:02 +0000 | [diff] [blame] | 1570 | CXXScopeSpec SS; |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 1571 | if (getLangOpts().CPlusPlus) |
John McCall | b3d8748 | 2010-08-24 05:47:05 +0000 | [diff] [blame] | 1572 | if (ParseOptionalCXXScopeSpecifier(SS, ParsedType(), EnteringContext)) |
John McCall | 9ba6166 | 2010-02-26 08:45:28 +0000 | [diff] [blame] | 1573 | return true; |
Argyrios Kyrtzidis | eb83ecd | 2008-11-08 16:45:02 +0000 | [diff] [blame] | 1574 | |
Richard Smith | 0576681 | 2012-08-18 00:55:03 +0000 | [diff] [blame] | 1575 | return TryAnnotateTypeOrScopeTokenAfterScopeSpec(EnteringContext, NeedType, |
| 1576 | SS, !WasScopeAnnotation); |
| 1577 | } |
| 1578 | |
| 1579 | /// \brief Try to annotate a type or scope token, having already parsed an |
| 1580 | /// optional scope specifier. \p IsNewScope should be \c true unless the scope |
| 1581 | /// specifier was extracted from an existing tok::annot_cxxscope annotation. |
| 1582 | bool Parser::TryAnnotateTypeOrScopeTokenAfterScopeSpec(bool EnteringContext, |
| 1583 | bool NeedType, |
| 1584 | CXXScopeSpec &SS, |
| 1585 | bool IsNewScope) { |
Argyrios Kyrtzidis | eb83ecd | 2008-11-08 16:45:02 +0000 | [diff] [blame] | 1586 | if (Tok.is(tok::identifier)) { |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 1587 | IdentifierInfo *CorrectedII = nullptr; |
Chris Lattner | 608d1fc | 2009-01-05 01:49:50 +0000 | [diff] [blame] | 1588 | // Determine whether the identifier is a type name. |
John McCall | b3d8748 | 2010-08-24 05:47:05 +0000 | [diff] [blame] | 1589 | if (ParsedType Ty = Actions.getTypeName(*Tok.getIdentifierInfo(), |
| 1590 | Tok.getLocation(), getCurScope(), |
Fariborz Jahanian | 1e52dfc | 2011-02-08 18:05:59 +0000 | [diff] [blame] | 1591 | &SS, false, |
Douglas Gregor | 9e87687 | 2011-03-01 18:12:44 +0000 | [diff] [blame] | 1592 | NextToken().is(tok::period), |
| 1593 | ParsedType(), |
Abramo Bagnara | fad03b7 | 2012-01-27 08:46:19 +0000 | [diff] [blame] | 1594 | /*IsCtorOrDtorName=*/false, |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 1595 | /*NonTrivialTypeSourceInfo*/ true, |
| 1596 | NeedType ? &CorrectedII |
| 1597 | : nullptr)) { |
Kaelyn Uhrain | fac9467 | 2011-10-11 01:02:41 +0000 | [diff] [blame] | 1598 | // A FixIt was applied as a result of typo correction |
| 1599 | if (CorrectedII) |
| 1600 | Tok.setIdentifierInfo(CorrectedII); |
Chris Lattner | 608d1fc | 2009-01-05 01:49:50 +0000 | [diff] [blame] | 1601 | // This is a typename. Replace the current token in-place with an |
| 1602 | // annotation type token. |
Chris Lattner | b31757b | 2009-01-06 05:06:21 +0000 | [diff] [blame] | 1603 | Tok.setKind(tok::annot_typename); |
John McCall | b3d8748 | 2010-08-24 05:47:05 +0000 | [diff] [blame] | 1604 | setTypeAnnotation(Tok, Ty); |
Chris Lattner | 608d1fc | 2009-01-05 01:49:50 +0000 | [diff] [blame] | 1605 | Tok.setAnnotationEndLoc(Tok.getLocation()); |
| 1606 | if (SS.isNotEmpty()) // it was a C++ qualified type name. |
| 1607 | Tok.setLocation(SS.getBeginLoc()); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1608 | |
Chris Lattner | 608d1fc | 2009-01-05 01:49:50 +0000 | [diff] [blame] | 1609 | // In case the tokens were cached, have Preprocessor replace |
| 1610 | // them with the annotation token. |
| 1611 | PP.AnnotateCachedTokens(Tok); |
John McCall | 9ba6166 | 2010-02-26 08:45:28 +0000 | [diff] [blame] | 1612 | return false; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1613 | } |
Douglas Gregor | 39a8de1 | 2009-02-25 19:37:18 +0000 | [diff] [blame] | 1614 | |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 1615 | if (!getLangOpts().CPlusPlus) { |
Chris Lattner | 608d1fc | 2009-01-05 01:49:50 +0000 | [diff] [blame] | 1616 | // If we're in C, we can't have :: tokens at all (the lexer won't return |
| 1617 | // 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] | 1618 | // just early exit. |
Chris Lattner | 608d1fc | 2009-01-05 01:49:50 +0000 | [diff] [blame] | 1619 | return false; |
Argyrios Kyrtzidis | eb83ecd | 2008-11-08 16:45:02 +0000 | [diff] [blame] | 1620 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1621 | |
Douglas Gregor | 39a8de1 | 2009-02-25 19:37:18 +0000 | [diff] [blame] | 1622 | // 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] | 1623 | if (NextToken().is(tok::less)) { |
Douglas Gregor | 7532dc6 | 2009-03-30 22:58:21 +0000 | [diff] [blame] | 1624 | TemplateTy Template; |
Douglas Gregor | 014e88d | 2009-11-03 23:16:33 +0000 | [diff] [blame] | 1625 | UnqualifiedId TemplateName; |
| 1626 | TemplateName.setIdentifier(Tok.getIdentifierInfo(), Tok.getLocation()); |
Douglas Gregor | 1fd6d44 | 2010-05-21 23:18:07 +0000 | [diff] [blame] | 1627 | bool MemberOfUnknownSpecialization; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1628 | if (TemplateNameKind TNK |
Abramo Bagnara | 7c15353 | 2010-08-06 12:11:11 +0000 | [diff] [blame] | 1629 | = Actions.isTemplateName(getCurScope(), SS, |
| 1630 | /*hasTemplateKeyword=*/false, TemplateName, |
John McCall | b3d8748 | 2010-08-24 05:47:05 +0000 | [diff] [blame] | 1631 | /*ObjectType=*/ ParsedType(), |
| 1632 | EnteringContext, |
Abramo Bagnara | 7c15353 | 2010-08-06 12:11:11 +0000 | [diff] [blame] | 1633 | Template, MemberOfUnknownSpecialization)) { |
Douglas Gregor | ca1bdd7 | 2009-11-04 00:56:37 +0000 | [diff] [blame] | 1634 | // Consume the identifier. |
| 1635 | ConsumeToken(); |
Abramo Bagnara | e4b9276 | 2012-01-27 09:46:47 +0000 | [diff] [blame] | 1636 | if (AnnotateTemplateIdToken(Template, TNK, SS, SourceLocation(), |
| 1637 | TemplateName)) { |
Chris Lattner | c8e27cc | 2009-06-26 04:27:47 +0000 | [diff] [blame] | 1638 | // If an unrecoverable error occurred, we need to return true here, |
| 1639 | // because the token stream is in a damaged state. We may not return |
| 1640 | // a valid identifier. |
John McCall | 9ba6166 | 2010-02-26 08:45:28 +0000 | [diff] [blame] | 1641 | return true; |
Chris Lattner | c8e27cc | 2009-06-26 04:27:47 +0000 | [diff] [blame] | 1642 | } |
Douglas Gregor | ca1bdd7 | 2009-11-04 00:56:37 +0000 | [diff] [blame] | 1643 | } |
Douglas Gregor | 55f6b14 | 2009-02-09 18:46:07 +0000 | [diff] [blame] | 1644 | } |
Douglas Gregor | d6fb7ef | 2008-12-18 19:37:40 +0000 | [diff] [blame] | 1645 | |
Douglas Gregor | 39a8de1 | 2009-02-25 19:37:18 +0000 | [diff] [blame] | 1646 | // The current token, which is either an identifier or a |
| 1647 | // template-id, is not part of the annotation. Fall through to |
| 1648 | // push that token back into the stream and complete the C++ scope |
| 1649 | // specifier annotation. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1650 | } |
Argyrios Kyrtzidis | eb83ecd | 2008-11-08 16:45:02 +0000 | [diff] [blame] | 1651 | |
Douglas Gregor | 39a8de1 | 2009-02-25 19:37:18 +0000 | [diff] [blame] | 1652 | if (Tok.is(tok::annot_template_id)) { |
Argyrios Kyrtzidis | 25a7676 | 2011-06-22 06:09:49 +0000 | [diff] [blame] | 1653 | TemplateIdAnnotation *TemplateId = takeTemplateIdAnnotation(Tok); |
Douglas Gregor | c45c232 | 2009-03-31 00:43:58 +0000 | [diff] [blame] | 1654 | if (TemplateId->Kind == TNK_Type_template) { |
Douglas Gregor | 39a8de1 | 2009-02-25 19:37:18 +0000 | [diff] [blame] | 1655 | // A template-id that refers to a type was parsed into a |
| 1656 | // template-id annotation in a context where we weren't allowed |
| 1657 | // to produce a type annotation token. Update the template-id |
| 1658 | // annotation token to a type annotation token now. |
Douglas Gregor | 059101f | 2011-03-02 00:47:37 +0000 | [diff] [blame] | 1659 | AnnotateTemplateIdTokenAsType(); |
John McCall | 9ba6166 | 2010-02-26 08:45:28 +0000 | [diff] [blame] | 1660 | return false; |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1661 | } |
Douglas Gregor | 39a8de1 | 2009-02-25 19:37:18 +0000 | [diff] [blame] | 1662 | } |
Douglas Gregor | d6fb7ef | 2008-12-18 19:37:40 +0000 | [diff] [blame] | 1663 | |
Chris Lattner | 6ec76d4 | 2009-01-04 22:32:19 +0000 | [diff] [blame] | 1664 | if (SS.isEmpty()) |
John McCall | 9ba6166 | 2010-02-26 08:45:28 +0000 | [diff] [blame] | 1665 | return false; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1666 | |
Chris Lattner | 6ec76d4 | 2009-01-04 22:32:19 +0000 | [diff] [blame] | 1667 | // A C++ scope specifier that isn't followed by a typename. |
Richard Smith | 0576681 | 2012-08-18 00:55:03 +0000 | [diff] [blame] | 1668 | AnnotateScopeToken(SS, IsNewScope); |
John McCall | 9ba6166 | 2010-02-26 08:45:28 +0000 | [diff] [blame] | 1669 | return false; |
Argyrios Kyrtzidis | eb83ecd | 2008-11-08 16:45:02 +0000 | [diff] [blame] | 1670 | } |
| 1671 | |
| 1672 | /// TryAnnotateScopeToken - Like TryAnnotateTypeOrScopeToken but only |
Douglas Gregor | 39a8de1 | 2009-02-25 19:37:18 +0000 | [diff] [blame] | 1673 | /// annotates C++ scope specifiers and template-ids. This returns |
Richard Smith | 83a22ec | 2012-05-09 08:23:23 +0000 | [diff] [blame] | 1674 | /// true if there was an error that could not be recovered from. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1675 | /// |
Chris Lattner | 55a7cef | 2009-01-05 00:13:00 +0000 | [diff] [blame] | 1676 | /// Note that this routine emits an error if you call it with ::new or ::delete |
| 1677 | /// 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] | 1678 | bool Parser::TryAnnotateCXXScopeToken(bool EnteringContext) { |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 1679 | assert(getLangOpts().CPlusPlus && |
Chris Lattner | 6ec76d4 | 2009-01-04 22:32:19 +0000 | [diff] [blame] | 1680 | "Call sites of this function should be guarded by checking for C++"); |
Douglas Gregor | 3b88735 | 2011-04-27 04:48:22 +0000 | [diff] [blame] | 1681 | assert((Tok.is(tok::identifier) || Tok.is(tok::coloncolon) || |
David Blaikie | 42d6d0c | 2011-12-04 05:04:18 +0000 | [diff] [blame] | 1682 | (Tok.is(tok::annot_template_id) && NextToken().is(tok::coloncolon)) || |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 1683 | Tok.is(tok::kw_decltype) || Tok.is(tok::kw___super)) && |
| 1684 | "Cannot be a type or scope token!"); |
Argyrios Kyrtzidis | eb83ecd | 2008-11-08 16:45:02 +0000 | [diff] [blame] | 1685 | |
Argyrios Kyrtzidis | 4bdd91c | 2008-11-26 21:41:52 +0000 | [diff] [blame] | 1686 | CXXScopeSpec SS; |
John McCall | b3d8748 | 2010-08-24 05:47:05 +0000 | [diff] [blame] | 1687 | if (ParseOptionalCXXScopeSpecifier(SS, ParsedType(), EnteringContext)) |
John McCall | 9ba6166 | 2010-02-26 08:45:28 +0000 | [diff] [blame] | 1688 | return true; |
Jeffrey Yasskin | edc2877 | 2010-04-07 23:29:58 +0000 | [diff] [blame] | 1689 | if (SS.isEmpty()) |
John McCall | 9ba6166 | 2010-02-26 08:45:28 +0000 | [diff] [blame] | 1690 | return false; |
Argyrios Kyrtzidis | eb83ecd | 2008-11-08 16:45:02 +0000 | [diff] [blame] | 1691 | |
Richard Smith | 0576681 | 2012-08-18 00:55:03 +0000 | [diff] [blame] | 1692 | AnnotateScopeToken(SS, true); |
John McCall | 9ba6166 | 2010-02-26 08:45:28 +0000 | [diff] [blame] | 1693 | return false; |
Argyrios Kyrtzidis | eb83ecd | 2008-11-08 16:45:02 +0000 | [diff] [blame] | 1694 | } |
John McCall | 6c94a6d | 2009-11-03 19:33:12 +0000 | [diff] [blame] | 1695 | |
Richard Trieu | fcaf27e | 2012-01-19 22:01:51 +0000 | [diff] [blame] | 1696 | bool Parser::isTokenEqualOrEqualTypo() { |
| 1697 | tok::TokenKind Kind = Tok.getKind(); |
| 1698 | switch (Kind) { |
| 1699 | default: |
Richard Trieu | d6c7c67 | 2012-01-18 22:54:52 +0000 | [diff] [blame] | 1700 | return false; |
Richard Trieu | fcaf27e | 2012-01-19 22:01:51 +0000 | [diff] [blame] | 1701 | case tok::ampequal: // &= |
| 1702 | case tok::starequal: // *= |
| 1703 | case tok::plusequal: // += |
| 1704 | case tok::minusequal: // -= |
| 1705 | case tok::exclaimequal: // != |
| 1706 | case tok::slashequal: // /= |
| 1707 | case tok::percentequal: // %= |
| 1708 | case tok::lessequal: // <= |
| 1709 | case tok::lesslessequal: // <<= |
| 1710 | case tok::greaterequal: // >= |
| 1711 | case tok::greatergreaterequal: // >>= |
| 1712 | case tok::caretequal: // ^= |
| 1713 | case tok::pipeequal: // |= |
| 1714 | case tok::equalequal: // == |
| 1715 | Diag(Tok, diag::err_invalid_token_after_declarator_suggest_equal) |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1716 | << Kind |
| 1717 | << FixItHint::CreateReplacement(SourceRange(Tok.getLocation()), "="); |
Richard Trieu | fcaf27e | 2012-01-19 22:01:51 +0000 | [diff] [blame] | 1718 | case tok::equal: |
| 1719 | return true; |
| 1720 | } |
Argyrios Kyrtzidis | a6eb5f8 | 2010-10-08 02:39:23 +0000 | [diff] [blame] | 1721 | } |
| 1722 | |
Argyrios Kyrtzidis | 7d10087 | 2011-09-04 03:32:15 +0000 | [diff] [blame] | 1723 | SourceLocation Parser::handleUnexpectedCodeCompletionToken() { |
| 1724 | assert(Tok.is(tok::code_completion)); |
| 1725 | PrevTokLocation = Tok.getLocation(); |
| 1726 | |
Douglas Gregor | 23c94db | 2010-07-02 17:43:08 +0000 | [diff] [blame] | 1727 | for (Scope *S = getCurScope(); S; S = S->getParent()) { |
Douglas Gregor | dc84534 | 2010-05-25 05:58:43 +0000 | [diff] [blame] | 1728 | if (S->getFlags() & Scope::FnScope) { |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame] | 1729 | Actions.CodeCompleteOrdinaryName(getCurScope(), |
| 1730 | Sema::PCC_RecoveryInFunction); |
Argyrios Kyrtzidis | 7d10087 | 2011-09-04 03:32:15 +0000 | [diff] [blame] | 1731 | cutOffParsing(); |
| 1732 | return PrevTokLocation; |
Douglas Gregor | dc84534 | 2010-05-25 05:58:43 +0000 | [diff] [blame] | 1733 | } |
| 1734 | |
| 1735 | if (S->getFlags() & Scope::ClassScope) { |
John McCall | f312b1e | 2010-08-26 23:41:50 +0000 | [diff] [blame] | 1736 | Actions.CodeCompleteOrdinaryName(getCurScope(), Sema::PCC_Class); |
Argyrios Kyrtzidis | 7d10087 | 2011-09-04 03:32:15 +0000 | [diff] [blame] | 1737 | cutOffParsing(); |
| 1738 | return PrevTokLocation; |
Douglas Gregor | dc84534 | 2010-05-25 05:58:43 +0000 | [diff] [blame] | 1739 | } |
| 1740 | } |
| 1741 | |
John McCall | f312b1e | 2010-08-26 23:41:50 +0000 | [diff] [blame] | 1742 | Actions.CodeCompleteOrdinaryName(getCurScope(), Sema::PCC_Namespace); |
Argyrios Kyrtzidis | 7d10087 | 2011-09-04 03:32:15 +0000 | [diff] [blame] | 1743 | cutOffParsing(); |
| 1744 | return PrevTokLocation; |
Douglas Gregor | dc84534 | 2010-05-25 05:58:43 +0000 | [diff] [blame] | 1745 | } |
| 1746 | |
Douglas Gregor | f44e854 | 2010-08-24 19:08:16 +0000 | [diff] [blame] | 1747 | // Code-completion pass-through functions |
| 1748 | |
| 1749 | void Parser::CodeCompleteDirective(bool InConditional) { |
Douglas Gregor | f29c523 | 2010-08-24 22:20:20 +0000 | [diff] [blame] | 1750 | Actions.CodeCompletePreprocessorDirective(InConditional); |
Douglas Gregor | f44e854 | 2010-08-24 19:08:16 +0000 | [diff] [blame] | 1751 | } |
| 1752 | |
| 1753 | void Parser::CodeCompleteInConditionalExclusion() { |
| 1754 | Actions.CodeCompleteInPreprocessorConditionalExclusion(getCurScope()); |
| 1755 | } |
Douglas Gregor | 1fbb447 | 2010-08-24 20:21:13 +0000 | [diff] [blame] | 1756 | |
| 1757 | void Parser::CodeCompleteMacroName(bool IsDefinition) { |
Douglas Gregor | f29c523 | 2010-08-24 22:20:20 +0000 | [diff] [blame] | 1758 | Actions.CodeCompletePreprocessorMacroName(IsDefinition); |
| 1759 | } |
| 1760 | |
| 1761 | void Parser::CodeCompletePreprocessorExpression() { |
| 1762 | Actions.CodeCompletePreprocessorExpression(); |
| 1763 | } |
| 1764 | |
| 1765 | void Parser::CodeCompleteMacroArgument(IdentifierInfo *Macro, |
| 1766 | MacroInfo *MacroInfo, |
| 1767 | unsigned ArgumentIndex) { |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame] | 1768 | Actions.CodeCompletePreprocessorMacroArgument(getCurScope(), Macro, MacroInfo, |
Douglas Gregor | f29c523 | 2010-08-24 22:20:20 +0000 | [diff] [blame] | 1769 | ArgumentIndex); |
Douglas Gregor | 1fbb447 | 2010-08-24 20:21:13 +0000 | [diff] [blame] | 1770 | } |
Douglas Gregor | 55817af | 2010-08-25 17:04:25 +0000 | [diff] [blame] | 1771 | |
| 1772 | void Parser::CodeCompleteNaturalLanguage() { |
| 1773 | Actions.CodeCompleteNaturalLanguage(); |
| 1774 | } |
Francois Pichet | f986038 | 2011-05-07 17:30:27 +0000 | [diff] [blame] | 1775 | |
Douglas Gregor | 3896fc5 | 2011-10-24 22:31:10 +0000 | [diff] [blame] | 1776 | bool Parser::ParseMicrosoftIfExistsCondition(IfExistsCondition& Result) { |
Francois Pichet | f986038 | 2011-05-07 17:30:27 +0000 | [diff] [blame] | 1777 | assert((Tok.is(tok::kw___if_exists) || Tok.is(tok::kw___if_not_exists)) && |
| 1778 | "Expected '__if_exists' or '__if_not_exists'"); |
Douglas Gregor | 3896fc5 | 2011-10-24 22:31:10 +0000 | [diff] [blame] | 1779 | Result.IsIfExists = Tok.is(tok::kw___if_exists); |
| 1780 | Result.KeywordLoc = ConsumeToken(); |
Francois Pichet | f986038 | 2011-05-07 17:30:27 +0000 | [diff] [blame] | 1781 | |
Douglas Gregor | 4a8dfb5 | 2011-10-12 16:37:45 +0000 | [diff] [blame] | 1782 | BalancedDelimiterTracker T(*this, tok::l_paren); |
| 1783 | if (T.consumeOpen()) { |
Douglas Gregor | 3896fc5 | 2011-10-24 22:31:10 +0000 | [diff] [blame] | 1784 | Diag(Tok, diag::err_expected_lparen_after) |
| 1785 | << (Result.IsIfExists? "__if_exists" : "__if_not_exists"); |
Francois Pichet | f986038 | 2011-05-07 17:30:27 +0000 | [diff] [blame] | 1786 | return true; |
| 1787 | } |
Francois Pichet | f986038 | 2011-05-07 17:30:27 +0000 | [diff] [blame] | 1788 | |
| 1789 | // Parse nested-name-specifier. |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame] | 1790 | if (getLangOpts().CPlusPlus) |
| 1791 | ParseOptionalCXXScopeSpecifier(Result.SS, ParsedType(), |
| 1792 | /*EnteringContext=*/false); |
Francois Pichet | f986038 | 2011-05-07 17:30:27 +0000 | [diff] [blame] | 1793 | |
| 1794 | // Check nested-name specifier. |
Douglas Gregor | 3896fc5 | 2011-10-24 22:31:10 +0000 | [diff] [blame] | 1795 | if (Result.SS.isInvalid()) { |
| 1796 | T.skipToEnd(); |
Francois Pichet | f986038 | 2011-05-07 17:30:27 +0000 | [diff] [blame] | 1797 | return true; |
| 1798 | } |
| 1799 | |
Abramo Bagnara | e4b9276 | 2012-01-27 09:46:47 +0000 | [diff] [blame] | 1800 | // Parse the unqualified-id. |
| 1801 | SourceLocation TemplateKWLoc; // FIXME: parsed, but unused. |
| 1802 | if (ParseUnqualifiedId(Result.SS, false, true, true, ParsedType(), |
| 1803 | TemplateKWLoc, Result.Name)) { |
Douglas Gregor | 3896fc5 | 2011-10-24 22:31:10 +0000 | [diff] [blame] | 1804 | T.skipToEnd(); |
Francois Pichet | f986038 | 2011-05-07 17:30:27 +0000 | [diff] [blame] | 1805 | return true; |
| 1806 | } |
| 1807 | |
Douglas Gregor | 3896fc5 | 2011-10-24 22:31:10 +0000 | [diff] [blame] | 1808 | if (T.consumeClose()) |
Francois Pichet | f986038 | 2011-05-07 17:30:27 +0000 | [diff] [blame] | 1809 | return true; |
Douglas Gregor | 3896fc5 | 2011-10-24 22:31:10 +0000 | [diff] [blame] | 1810 | |
Francois Pichet | f986038 | 2011-05-07 17:30:27 +0000 | [diff] [blame] | 1811 | // Check if the symbol exists. |
Douglas Gregor | 65019ac | 2011-10-25 03:44:56 +0000 | [diff] [blame] | 1812 | switch (Actions.CheckMicrosoftIfExistsSymbol(getCurScope(), Result.KeywordLoc, |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame] | 1813 | Result.IsIfExists, Result.SS, |
Douglas Gregor | 3896fc5 | 2011-10-24 22:31:10 +0000 | [diff] [blame] | 1814 | Result.Name)) { |
| 1815 | case Sema::IER_Exists: |
| 1816 | Result.Behavior = Result.IsIfExists ? IEB_Parse : IEB_Skip; |
| 1817 | break; |
Francois Pichet | f986038 | 2011-05-07 17:30:27 +0000 | [diff] [blame] | 1818 | |
Douglas Gregor | 3896fc5 | 2011-10-24 22:31:10 +0000 | [diff] [blame] | 1819 | case Sema::IER_DoesNotExist: |
| 1820 | Result.Behavior = !Result.IsIfExists ? IEB_Parse : IEB_Skip; |
| 1821 | break; |
| 1822 | |
| 1823 | case Sema::IER_Dependent: |
| 1824 | Result.Behavior = IEB_Dependent; |
| 1825 | break; |
Douglas Gregor | 65019ac | 2011-10-25 03:44:56 +0000 | [diff] [blame] | 1826 | |
| 1827 | case Sema::IER_Error: |
| 1828 | return true; |
Douglas Gregor | 3896fc5 | 2011-10-24 22:31:10 +0000 | [diff] [blame] | 1829 | } |
Francois Pichet | f986038 | 2011-05-07 17:30:27 +0000 | [diff] [blame] | 1830 | |
| 1831 | return false; |
| 1832 | } |
| 1833 | |
Francois Pichet | 563a645 | 2011-05-25 10:19:49 +0000 | [diff] [blame] | 1834 | void Parser::ParseMicrosoftIfExistsExternalDeclaration() { |
Douglas Gregor | 3896fc5 | 2011-10-24 22:31:10 +0000 | [diff] [blame] | 1835 | IfExistsCondition Result; |
Francois Pichet | f986038 | 2011-05-07 17:30:27 +0000 | [diff] [blame] | 1836 | if (ParseMicrosoftIfExistsCondition(Result)) |
| 1837 | return; |
| 1838 | |
Douglas Gregor | 3896fc5 | 2011-10-24 22:31:10 +0000 | [diff] [blame] | 1839 | BalancedDelimiterTracker Braces(*this, tok::l_brace); |
| 1840 | if (Braces.consumeOpen()) { |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1841 | Diag(Tok, diag::err_expected) << tok::l_brace; |
Francois Pichet | f986038 | 2011-05-07 17:30:27 +0000 | [diff] [blame] | 1842 | return; |
| 1843 | } |
Francois Pichet | f986038 | 2011-05-07 17:30:27 +0000 | [diff] [blame] | 1844 | |
Douglas Gregor | 3896fc5 | 2011-10-24 22:31:10 +0000 | [diff] [blame] | 1845 | switch (Result.Behavior) { |
| 1846 | case IEB_Parse: |
| 1847 | // Parse declarations below. |
| 1848 | break; |
| 1849 | |
| 1850 | case IEB_Dependent: |
| 1851 | llvm_unreachable("Cannot have a dependent external declaration"); |
| 1852 | |
| 1853 | case IEB_Skip: |
| 1854 | Braces.skipToEnd(); |
Francois Pichet | f986038 | 2011-05-07 17:30:27 +0000 | [diff] [blame] | 1855 | return; |
| 1856 | } |
| 1857 | |
Douglas Gregor | 3896fc5 | 2011-10-24 22:31:10 +0000 | [diff] [blame] | 1858 | // Parse the declarations. |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1859 | // FIXME: Support module import within __if_exists? |
| 1860 | while (Tok.isNot(tok::r_brace) && !isEofOrEom()) { |
Francois Pichet | f986038 | 2011-05-07 17:30:27 +0000 | [diff] [blame] | 1861 | ParsedAttributesWithRange attrs(AttrFactory); |
Richard Smith | 4e24f0f | 2013-01-02 12:01:23 +0000 | [diff] [blame] | 1862 | MaybeParseCXX11Attributes(attrs); |
Francois Pichet | f986038 | 2011-05-07 17:30:27 +0000 | [diff] [blame] | 1863 | MaybeParseMicrosoftAttributes(attrs); |
| 1864 | DeclGroupPtrTy Result = ParseExternalDeclaration(attrs); |
| 1865 | if (Result && !getCurScope()->getParent()) |
| 1866 | Actions.getASTConsumer().HandleTopLevelDecl(Result.get()); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1867 | } |
Douglas Gregor | 3896fc5 | 2011-10-24 22:31:10 +0000 | [diff] [blame] | 1868 | Braces.consumeClose(); |
Francois Pichet | f986038 | 2011-05-07 17:30:27 +0000 | [diff] [blame] | 1869 | } |
Douglas Gregor | 6aa52ec | 2011-08-26 23:56:07 +0000 | [diff] [blame] | 1870 | |
Douglas Gregor | 5948ae1 | 2012-01-03 18:04:46 +0000 | [diff] [blame] | 1871 | Parser::DeclGroupPtrTy Parser::ParseModuleImport(SourceLocation AtLoc) { |
Douglas Gregor | 1b257af | 2012-12-11 22:11:52 +0000 | [diff] [blame] | 1872 | assert(Tok.isObjCAtKeyword(tok::objc_import) && |
Douglas Gregor | 65030af | 2011-08-31 18:19:09 +0000 | [diff] [blame] | 1873 | "Improper start to module import"); |
Douglas Gregor | 6aa52ec | 2011-08-26 23:56:07 +0000 | [diff] [blame] | 1874 | SourceLocation ImportLoc = ConsumeToken(); |
| 1875 | |
Dmitri Gribenko | cfa88f8 | 2013-01-12 19:30:44 +0000 | [diff] [blame] | 1876 | SmallVector<std::pair<IdentifierInfo *, SourceLocation>, 2> Path; |
Douglas Gregor | 6aa52ec | 2011-08-26 23:56:07 +0000 | [diff] [blame] | 1877 | |
Douglas Gregor | 3d3589d | 2011-11-30 00:36:36 +0000 | [diff] [blame] | 1878 | // Parse the module path. |
| 1879 | do { |
| 1880 | if (!Tok.is(tok::identifier)) { |
Douglas Gregor | c5b2e58 | 2012-01-29 18:15:03 +0000 | [diff] [blame] | 1881 | if (Tok.is(tok::code_completion)) { |
| 1882 | Actions.CodeCompleteModuleImport(ImportLoc, Path); |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 1883 | cutOffParsing(); |
Douglas Gregor | c5b2e58 | 2012-01-29 18:15:03 +0000 | [diff] [blame] | 1884 | return DeclGroupPtrTy(); |
| 1885 | } |
| 1886 | |
Douglas Gregor | 3d3589d | 2011-11-30 00:36:36 +0000 | [diff] [blame] | 1887 | Diag(Tok, diag::err_module_expected_ident); |
| 1888 | SkipUntil(tok::semi); |
| 1889 | return DeclGroupPtrTy(); |
| 1890 | } |
| 1891 | |
| 1892 | // Record this part of the module path. |
| 1893 | Path.push_back(std::make_pair(Tok.getIdentifierInfo(), Tok.getLocation())); |
| 1894 | ConsumeToken(); |
| 1895 | |
| 1896 | if (Tok.is(tok::period)) { |
| 1897 | ConsumeToken(); |
| 1898 | continue; |
| 1899 | } |
| 1900 | |
| 1901 | break; |
| 1902 | } while (true); |
Argyrios Kyrtzidis | 3b7deda | 2013-05-24 05:44:08 +0000 | [diff] [blame] | 1903 | |
| 1904 | if (PP.hadModuleLoaderFatalFailure()) { |
| 1905 | // With a fatal failure in the module loader, we abort parsing. |
| 1906 | cutOffParsing(); |
| 1907 | return DeclGroupPtrTy(); |
| 1908 | } |
| 1909 | |
Douglas Gregor | 5948ae1 | 2012-01-03 18:04:46 +0000 | [diff] [blame] | 1910 | DeclResult Import = Actions.ActOnModuleImport(AtLoc, ImportLoc, Path); |
Douglas Gregor | 6aa52ec | 2011-08-26 23:56:07 +0000 | [diff] [blame] | 1911 | ExpectAndConsumeSemi(diag::err_module_expected_semi); |
| 1912 | if (Import.isInvalid()) |
| 1913 | return DeclGroupPtrTy(); |
| 1914 | |
| 1915 | return Actions.ConvertDeclToDeclGroup(Import.get()); |
| 1916 | } |
Douglas Gregor | 4a8dfb5 | 2011-10-12 16:37:45 +0000 | [diff] [blame] | 1917 | |
Douglas Gregor | c86c40b | 2012-06-06 21:18:07 +0000 | [diff] [blame] | 1918 | bool BalancedDelimiterTracker::diagnoseOverflow() { |
Richard Smith | 9e738cc | 2013-02-22 01:59:51 +0000 | [diff] [blame] | 1919 | P.Diag(P.Tok, diag::err_bracket_depth_exceeded) |
| 1920 | << P.getLangOpts().BracketDepth; |
| 1921 | P.Diag(P.Tok, diag::note_bracket_depth); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1922 | P.cutOffParsing(); |
| 1923 | return true; |
Douglas Gregor | 4a8dfb5 | 2011-10-12 16:37:45 +0000 | [diff] [blame] | 1924 | } |
| 1925 | |
Douglas Gregor | c86c40b | 2012-06-06 21:18:07 +0000 | [diff] [blame] | 1926 | bool BalancedDelimiterTracker::expectAndConsume(unsigned DiagID, |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1927 | const char *Msg, |
| 1928 | tok::TokenKind SkipToTok) { |
Douglas Gregor | 4a8dfb5 | 2011-10-12 16:37:45 +0000 | [diff] [blame] | 1929 | LOpen = P.Tok.getLocation(); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1930 | if (P.ExpectAndConsume(Kind, DiagID, Msg)) { |
| 1931 | if (SkipToTok != tok::unknown) |
| 1932 | P.SkipUntil(SkipToTok, Parser::StopAtSemi); |
Douglas Gregor | d78ef5b | 2012-03-08 01:00:17 +0000 | [diff] [blame] | 1933 | return true; |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1934 | } |
| 1935 | |
Douglas Gregor | d78ef5b | 2012-03-08 01:00:17 +0000 | [diff] [blame] | 1936 | if (getDepth() < MaxDepth) |
| 1937 | return false; |
| 1938 | |
| 1939 | return diagnoseOverflow(); |
Douglas Gregor | 4a8dfb5 | 2011-10-12 16:37:45 +0000 | [diff] [blame] | 1940 | } |
| 1941 | |
Douglas Gregor | c86c40b | 2012-06-06 21:18:07 +0000 | [diff] [blame] | 1942 | bool BalancedDelimiterTracker::diagnoseMissingClose() { |
Douglas Gregor | d78ef5b | 2012-03-08 01:00:17 +0000 | [diff] [blame] | 1943 | assert(!P.Tok.is(Close) && "Should have consumed closing delimiter"); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1944 | |
| 1945 | P.Diag(P.Tok, diag::err_expected) << Close; |
| 1946 | P.Diag(LOpen, diag::note_matching) << Kind; |
Richard Smith | 5eed7e0 | 2013-10-15 01:34:54 +0000 | [diff] [blame] | 1947 | |
| 1948 | // If we're not already at some kind of closing bracket, skip to our closing |
| 1949 | // token. |
| 1950 | if (P.Tok.isNot(tok::r_paren) && P.Tok.isNot(tok::r_brace) && |
| 1951 | P.Tok.isNot(tok::r_square) && |
Alexey Bataev | 8fe2475 | 2013-11-18 08:17:37 +0000 | [diff] [blame] | 1952 | P.SkipUntil(Close, FinalToken, |
| 1953 | Parser::StopAtSemi | Parser::StopBeforeMatch) && |
Richard Smith | 5eed7e0 | 2013-10-15 01:34:54 +0000 | [diff] [blame] | 1954 | P.Tok.is(Close)) |
David Blaikie | b578aee | 2012-11-07 19:08:05 +0000 | [diff] [blame] | 1955 | LClose = P.ConsumeAnyToken(); |
Douglas Gregor | 4a8dfb5 | 2011-10-12 16:37:45 +0000 | [diff] [blame] | 1956 | return true; |
| 1957 | } |
Douglas Gregor | 3896fc5 | 2011-10-24 22:31:10 +0000 | [diff] [blame] | 1958 | |
Douglas Gregor | c86c40b | 2012-06-06 21:18:07 +0000 | [diff] [blame] | 1959 | void BalancedDelimiterTracker::skipToEnd() { |
Alexey Bataev | 8fe2475 | 2013-11-18 08:17:37 +0000 | [diff] [blame] | 1960 | P.SkipUntil(Close, Parser::StopBeforeMatch); |
Richard Smith | 5eed7e0 | 2013-10-15 01:34:54 +0000 | [diff] [blame] | 1961 | consumeClose(); |
Douglas Gregor | 3896fc5 | 2011-10-24 22:31:10 +0000 | [diff] [blame] | 1962 | } |