| //===--- ParsePragma.cpp - Language specific pragma parsing ---------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file implements the language specific #pragma handlers. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "ParsePragma.h" |
| #include "clang/Lex/Preprocessor.h" |
| #include "clang/Parse/ParseDiagnostic.h" |
| #include "clang/Parse/Parser.h" |
| #include "clang/Sema/Scope.h" |
| #include "llvm/ADT/StringSwitch.h" |
| using namespace clang; |
| |
| /// \brief Handle the annotation token produced for #pragma unused(...) |
| /// |
| /// Each annot_pragma_unused is followed by the argument token so e.g. |
| /// "#pragma unused(x,y)" becomes: |
| /// annot_pragma_unused 'x' annot_pragma_unused 'y' |
| void Parser::HandlePragmaUnused() { |
| assert(Tok.is(tok::annot_pragma_unused)); |
| SourceLocation UnusedLoc = ConsumeToken(); |
| Actions.ActOnPragmaUnused(Tok, getCurScope(), UnusedLoc); |
| ConsumeToken(); // The argument token. |
| } |
| |
| void Parser::HandlePragmaVisibility() { |
| assert(Tok.is(tok::annot_pragma_vis)); |
| const IdentifierInfo *VisType = |
| static_cast<IdentifierInfo *>(Tok.getAnnotationValue()); |
| SourceLocation VisLoc = ConsumeToken(); |
| Actions.ActOnPragmaVisibility(VisType, VisLoc); |
| } |
| |
| struct PragmaPackInfo { |
| Sema::PragmaPackKind Kind; |
| IdentifierInfo *Name; |
| Token Alignment; |
| SourceLocation LParenLoc; |
| SourceLocation RParenLoc; |
| }; |
| |
| void Parser::HandlePragmaPack() { |
| assert(Tok.is(tok::annot_pragma_pack)); |
| PragmaPackInfo *Info = |
| static_cast<PragmaPackInfo *>(Tok.getAnnotationValue()); |
| SourceLocation PragmaLoc = ConsumeToken(); |
| ExprResult Alignment; |
| if (Info->Alignment.is(tok::numeric_constant)) { |
| Alignment = Actions.ActOnNumericConstant(Info->Alignment); |
| if (Alignment.isInvalid()) |
| return; |
| } |
| Actions.ActOnPragmaPack(Info->Kind, Info->Name, Alignment.get(), PragmaLoc, |
| Info->LParenLoc, Info->RParenLoc); |
| } |
| |
| void Parser::HandlePragmaMSStruct() { |
| assert(Tok.is(tok::annot_pragma_msstruct)); |
| Sema::PragmaMSStructKind Kind = |
| static_cast<Sema::PragmaMSStructKind>( |
| reinterpret_cast<uintptr_t>(Tok.getAnnotationValue())); |
| Actions.ActOnPragmaMSStruct(Kind); |
| ConsumeToken(); // The annotation token. |
| } |
| |
| void Parser::HandlePragmaAlign() { |
| assert(Tok.is(tok::annot_pragma_align)); |
| Sema::PragmaOptionsAlignKind Kind = |
| static_cast<Sema::PragmaOptionsAlignKind>( |
| reinterpret_cast<uintptr_t>(Tok.getAnnotationValue())); |
| SourceLocation PragmaLoc = ConsumeToken(); |
| Actions.ActOnPragmaOptionsAlign(Kind, PragmaLoc); |
| } |
| |
| void Parser::HandlePragmaWeak() { |
| assert(Tok.is(tok::annot_pragma_weak)); |
| SourceLocation PragmaLoc = ConsumeToken(); |
| Actions.ActOnPragmaWeakID(Tok.getIdentifierInfo(), PragmaLoc, |
| Tok.getLocation()); |
| ConsumeToken(); // The weak name. |
| } |
| |
| void Parser::HandlePragmaWeakAlias() { |
| assert(Tok.is(tok::annot_pragma_weakalias)); |
| SourceLocation PragmaLoc = ConsumeToken(); |
| IdentifierInfo *WeakName = Tok.getIdentifierInfo(); |
| SourceLocation WeakNameLoc = Tok.getLocation(); |
| ConsumeToken(); |
| IdentifierInfo *AliasName = Tok.getIdentifierInfo(); |
| SourceLocation AliasNameLoc = Tok.getLocation(); |
| ConsumeToken(); |
| Actions.ActOnPragmaWeakAlias(WeakName, AliasName, PragmaLoc, |
| WeakNameLoc, AliasNameLoc); |
| |
| } |
| |
| void Parser::HandlePragmaRedefineExtname() { |
| assert(Tok.is(tok::annot_pragma_redefine_extname)); |
| SourceLocation RedefLoc = ConsumeToken(); |
| IdentifierInfo *RedefName = Tok.getIdentifierInfo(); |
| SourceLocation RedefNameLoc = Tok.getLocation(); |
| ConsumeToken(); |
| IdentifierInfo *AliasName = Tok.getIdentifierInfo(); |
| SourceLocation AliasNameLoc = Tok.getLocation(); |
| ConsumeToken(); |
| Actions.ActOnPragmaRedefineExtname(RedefName, AliasName, RedefLoc, |
| RedefNameLoc, AliasNameLoc); |
| } |
| |
| void Parser::HandlePragmaFPContract() { |
| assert(Tok.is(tok::annot_pragma_fp_contract)); |
| tok::OnOffSwitch OOS = |
| static_cast<tok::OnOffSwitch>( |
| reinterpret_cast<uintptr_t>(Tok.getAnnotationValue())); |
| Actions.ActOnPragmaFPContract(OOS); |
| ConsumeToken(); // The annotation token. |
| } |
| |
| StmtResult Parser::HandlePragmaCaptured() |
| { |
| assert(Tok.is(tok::annot_pragma_captured)); |
| ConsumeToken(); |
| |
| if (Tok.isNot(tok::l_brace)) { |
| PP.Diag(Tok, diag::err_expected_lbrace); |
| return StmtError(); |
| } |
| |
| SourceLocation Loc = Tok.getLocation(); |
| |
| ParseScope CapturedRegionScope(this, Scope::FnScope | Scope::DeclScope); |
| Actions.ActOnCapturedRegionStart(Loc, getCurScope(), CR_Default, |
| /*NumParams=*/1); |
| |
| StmtResult R = ParseCompoundStatement(); |
| CapturedRegionScope.Exit(); |
| |
| if (R.isInvalid()) { |
| Actions.ActOnCapturedRegionError(); |
| return StmtError(); |
| } |
| |
| return Actions.ActOnCapturedRegionEnd(R.get()); |
| } |
| |
| namespace { |
| typedef llvm::PointerIntPair<IdentifierInfo *, 1, bool> OpenCLExtData; |
| } |
| |
| void Parser::HandlePragmaOpenCLExtension() { |
| assert(Tok.is(tok::annot_pragma_opencl_extension)); |
| OpenCLExtData data = |
| OpenCLExtData::getFromOpaqueValue(Tok.getAnnotationValue()); |
| unsigned state = data.getInt(); |
| IdentifierInfo *ename = data.getPointer(); |
| SourceLocation NameLoc = Tok.getLocation(); |
| ConsumeToken(); // The annotation token. |
| |
| OpenCLOptions &f = Actions.getOpenCLOptions(); |
| // OpenCL 1.1 9.1: "The all variant sets the behavior for all extensions, |
| // overriding all previously issued extension directives, but only if the |
| // behavior is set to disable." |
| if (state == 0 && ename->isStr("all")) { |
| #define OPENCLEXT(nm) f.nm = 0; |
| #include "clang/Basic/OpenCLExtensions.def" |
| } |
| #define OPENCLEXT(nm) else if (ename->isStr(#nm)) { f.nm = state; } |
| #include "clang/Basic/OpenCLExtensions.def" |
| else { |
| PP.Diag(NameLoc, diag::warn_pragma_unknown_extension) << ename; |
| return; |
| } |
| } |
| |
| |
| |
| // #pragma GCC visibility comes in two variants: |
| // 'push' '(' [visibility] ')' |
| // 'pop' |
| void PragmaGCCVisibilityHandler::HandlePragma(Preprocessor &PP, |
| PragmaIntroducerKind Introducer, |
| Token &VisTok) { |
| SourceLocation VisLoc = VisTok.getLocation(); |
| |
| Token Tok; |
| PP.LexUnexpandedToken(Tok); |
| |
| const IdentifierInfo *PushPop = Tok.getIdentifierInfo(); |
| |
| const IdentifierInfo *VisType; |
| if (PushPop && PushPop->isStr("pop")) { |
| VisType = 0; |
| } else if (PushPop && PushPop->isStr("push")) { |
| PP.LexUnexpandedToken(Tok); |
| if (Tok.isNot(tok::l_paren)) { |
| PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_lparen) |
| << "visibility"; |
| return; |
| } |
| PP.LexUnexpandedToken(Tok); |
| VisType = Tok.getIdentifierInfo(); |
| if (!VisType) { |
| PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_identifier) |
| << "visibility"; |
| return; |
| } |
| PP.LexUnexpandedToken(Tok); |
| if (Tok.isNot(tok::r_paren)) { |
| PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_rparen) |
| << "visibility"; |
| return; |
| } |
| } else { |
| PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_identifier) |
| << "visibility"; |
| return; |
| } |
| PP.LexUnexpandedToken(Tok); |
| if (Tok.isNot(tok::eod)) { |
| PP.Diag(Tok.getLocation(), diag::warn_pragma_extra_tokens_at_eol) |
| << "visibility"; |
| return; |
| } |
| |
| Token *Toks = new Token[1]; |
| Toks[0].startToken(); |
| Toks[0].setKind(tok::annot_pragma_vis); |
| Toks[0].setLocation(VisLoc); |
| Toks[0].setAnnotationValue( |
| const_cast<void*>(static_cast<const void*>(VisType))); |
| PP.EnterTokenStream(Toks, 1, /*DisableMacroExpansion=*/true, |
| /*OwnsTokens=*/true); |
| } |
| |
| // #pragma pack(...) comes in the following delicious flavors: |
| // pack '(' [integer] ')' |
| // pack '(' 'show' ')' |
| // pack '(' ('push' | 'pop') [',' identifier] [, integer] ')' |
| void PragmaPackHandler::HandlePragma(Preprocessor &PP, |
| PragmaIntroducerKind Introducer, |
| Token &PackTok) { |
| SourceLocation PackLoc = PackTok.getLocation(); |
| |
| Token Tok; |
| PP.Lex(Tok); |
| if (Tok.isNot(tok::l_paren)) { |
| PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_lparen) << "pack"; |
| return; |
| } |
| |
| Sema::PragmaPackKind Kind = Sema::PPK_Default; |
| IdentifierInfo *Name = 0; |
| Token Alignment; |
| Alignment.startToken(); |
| SourceLocation LParenLoc = Tok.getLocation(); |
| PP.Lex(Tok); |
| if (Tok.is(tok::numeric_constant)) { |
| Alignment = Tok; |
| |
| PP.Lex(Tok); |
| |
| // In MSVC/gcc, #pragma pack(4) sets the alignment without affecting |
| // the push/pop stack. |
| // In Apple gcc, #pragma pack(4) is equivalent to #pragma pack(push, 4) |
| if (PP.getLangOpts().ApplePragmaPack) |
| Kind = Sema::PPK_Push; |
| } else if (Tok.is(tok::identifier)) { |
| const IdentifierInfo *II = Tok.getIdentifierInfo(); |
| if (II->isStr("show")) { |
| Kind = Sema::PPK_Show; |
| PP.Lex(Tok); |
| } else { |
| if (II->isStr("push")) { |
| Kind = Sema::PPK_Push; |
| } else if (II->isStr("pop")) { |
| Kind = Sema::PPK_Pop; |
| } else { |
| PP.Diag(Tok.getLocation(), diag::warn_pragma_pack_invalid_action); |
| return; |
| } |
| PP.Lex(Tok); |
| |
| if (Tok.is(tok::comma)) { |
| PP.Lex(Tok); |
| |
| if (Tok.is(tok::numeric_constant)) { |
| Alignment = Tok; |
| |
| PP.Lex(Tok); |
| } else if (Tok.is(tok::identifier)) { |
| Name = Tok.getIdentifierInfo(); |
| PP.Lex(Tok); |
| |
| if (Tok.is(tok::comma)) { |
| PP.Lex(Tok); |
| |
| if (Tok.isNot(tok::numeric_constant)) { |
| PP.Diag(Tok.getLocation(), diag::warn_pragma_pack_malformed); |
| return; |
| } |
| |
| Alignment = Tok; |
| |
| PP.Lex(Tok); |
| } |
| } else { |
| PP.Diag(Tok.getLocation(), diag::warn_pragma_pack_malformed); |
| return; |
| } |
| } |
| } |
| } else if (PP.getLangOpts().ApplePragmaPack) { |
| // In MSVC/gcc, #pragma pack() resets the alignment without affecting |
| // the push/pop stack. |
| // In Apple gcc #pragma pack() is equivalent to #pragma pack(pop). |
| Kind = Sema::PPK_Pop; |
| } |
| |
| if (Tok.isNot(tok::r_paren)) { |
| PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_rparen) << "pack"; |
| return; |
| } |
| |
| SourceLocation RParenLoc = Tok.getLocation(); |
| PP.Lex(Tok); |
| if (Tok.isNot(tok::eod)) { |
| PP.Diag(Tok.getLocation(), diag::warn_pragma_extra_tokens_at_eol) << "pack"; |
| return; |
| } |
| |
| PragmaPackInfo *Info = |
| (PragmaPackInfo*) PP.getPreprocessorAllocator().Allocate( |
| sizeof(PragmaPackInfo), llvm::alignOf<PragmaPackInfo>()); |
| new (Info) PragmaPackInfo(); |
| Info->Kind = Kind; |
| Info->Name = Name; |
| Info->Alignment = Alignment; |
| Info->LParenLoc = LParenLoc; |
| Info->RParenLoc = RParenLoc; |
| |
| Token *Toks = |
| (Token*) PP.getPreprocessorAllocator().Allocate( |
| sizeof(Token) * 1, llvm::alignOf<Token>()); |
| new (Toks) Token(); |
| Toks[0].startToken(); |
| Toks[0].setKind(tok::annot_pragma_pack); |
| Toks[0].setLocation(PackLoc); |
| Toks[0].setAnnotationValue(static_cast<void*>(Info)); |
| PP.EnterTokenStream(Toks, 1, /*DisableMacroExpansion=*/true, |
| /*OwnsTokens=*/false); |
| } |
| |
| // #pragma ms_struct on |
| // #pragma ms_struct off |
| void PragmaMSStructHandler::HandlePragma(Preprocessor &PP, |
| PragmaIntroducerKind Introducer, |
| Token &MSStructTok) { |
| Sema::PragmaMSStructKind Kind = Sema::PMSST_OFF; |
| |
| Token Tok; |
| PP.Lex(Tok); |
| if (Tok.isNot(tok::identifier)) { |
| PP.Diag(Tok.getLocation(), diag::warn_pragma_ms_struct); |
| return; |
| } |
| const IdentifierInfo *II = Tok.getIdentifierInfo(); |
| if (II->isStr("on")) { |
| Kind = Sema::PMSST_ON; |
| PP.Lex(Tok); |
| } |
| else if (II->isStr("off") || II->isStr("reset")) |
| PP.Lex(Tok); |
| else { |
| PP.Diag(Tok.getLocation(), diag::warn_pragma_ms_struct); |
| return; |
| } |
| |
| if (Tok.isNot(tok::eod)) { |
| PP.Diag(Tok.getLocation(), diag::warn_pragma_extra_tokens_at_eol) |
| << "ms_struct"; |
| return; |
| } |
| |
| Token *Toks = |
| (Token*) PP.getPreprocessorAllocator().Allocate( |
| sizeof(Token) * 1, llvm::alignOf<Token>()); |
| new (Toks) Token(); |
| Toks[0].startToken(); |
| Toks[0].setKind(tok::annot_pragma_msstruct); |
| Toks[0].setLocation(MSStructTok.getLocation()); |
| Toks[0].setAnnotationValue(reinterpret_cast<void*>( |
| static_cast<uintptr_t>(Kind))); |
| PP.EnterTokenStream(Toks, 1, /*DisableMacroExpansion=*/true, |
| /*OwnsTokens=*/false); |
| } |
| |
| // #pragma 'align' '=' {'native','natural','mac68k','power','reset'} |
| // #pragma 'options 'align' '=' {'native','natural','mac68k','power','reset'} |
| static void ParseAlignPragma(Preprocessor &PP, Token &FirstTok, |
| bool IsOptions) { |
| Token Tok; |
| |
| if (IsOptions) { |
| PP.Lex(Tok); |
| if (Tok.isNot(tok::identifier) || |
| !Tok.getIdentifierInfo()->isStr("align")) { |
| PP.Diag(Tok.getLocation(), diag::warn_pragma_options_expected_align); |
| return; |
| } |
| } |
| |
| PP.Lex(Tok); |
| if (Tok.isNot(tok::equal)) { |
| PP.Diag(Tok.getLocation(), diag::warn_pragma_align_expected_equal) |
| << IsOptions; |
| return; |
| } |
| |
| PP.Lex(Tok); |
| if (Tok.isNot(tok::identifier)) { |
| PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_identifier) |
| << (IsOptions ? "options" : "align"); |
| return; |
| } |
| |
| Sema::PragmaOptionsAlignKind Kind = Sema::POAK_Natural; |
| const IdentifierInfo *II = Tok.getIdentifierInfo(); |
| if (II->isStr("native")) |
| Kind = Sema::POAK_Native; |
| else if (II->isStr("natural")) |
| Kind = Sema::POAK_Natural; |
| else if (II->isStr("packed")) |
| Kind = Sema::POAK_Packed; |
| else if (II->isStr("power")) |
| Kind = Sema::POAK_Power; |
| else if (II->isStr("mac68k")) |
| Kind = Sema::POAK_Mac68k; |
| else if (II->isStr("reset")) |
| Kind = Sema::POAK_Reset; |
| else { |
| PP.Diag(Tok.getLocation(), diag::warn_pragma_align_invalid_option) |
| << IsOptions; |
| return; |
| } |
| |
| PP.Lex(Tok); |
| if (Tok.isNot(tok::eod)) { |
| PP.Diag(Tok.getLocation(), diag::warn_pragma_extra_tokens_at_eol) |
| << (IsOptions ? "options" : "align"); |
| return; |
| } |
| |
| Token *Toks = |
| (Token*) PP.getPreprocessorAllocator().Allocate( |
| sizeof(Token) * 1, llvm::alignOf<Token>()); |
| new (Toks) Token(); |
| Toks[0].startToken(); |
| Toks[0].setKind(tok::annot_pragma_align); |
| Toks[0].setLocation(FirstTok.getLocation()); |
| Toks[0].setAnnotationValue(reinterpret_cast<void*>( |
| static_cast<uintptr_t>(Kind))); |
| PP.EnterTokenStream(Toks, 1, /*DisableMacroExpansion=*/true, |
| /*OwnsTokens=*/false); |
| } |
| |
| void PragmaAlignHandler::HandlePragma(Preprocessor &PP, |
| PragmaIntroducerKind Introducer, |
| Token &AlignTok) { |
| ParseAlignPragma(PP, AlignTok, /*IsOptions=*/false); |
| } |
| |
| void PragmaOptionsHandler::HandlePragma(Preprocessor &PP, |
| PragmaIntroducerKind Introducer, |
| Token &OptionsTok) { |
| ParseAlignPragma(PP, OptionsTok, /*IsOptions=*/true); |
| } |
| |
| // #pragma unused(identifier) |
| void PragmaUnusedHandler::HandlePragma(Preprocessor &PP, |
| PragmaIntroducerKind Introducer, |
| Token &UnusedTok) { |
| // FIXME: Should we be expanding macros here? My guess is no. |
| SourceLocation UnusedLoc = UnusedTok.getLocation(); |
| |
| // Lex the left '('. |
| Token Tok; |
| PP.Lex(Tok); |
| if (Tok.isNot(tok::l_paren)) { |
| PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_lparen) << "unused"; |
| return; |
| } |
| |
| // Lex the declaration reference(s). |
| SmallVector<Token, 5> Identifiers; |
| SourceLocation RParenLoc; |
| bool LexID = true; |
| |
| while (true) { |
| PP.Lex(Tok); |
| |
| if (LexID) { |
| if (Tok.is(tok::identifier)) { |
| Identifiers.push_back(Tok); |
| LexID = false; |
| continue; |
| } |
| |
| // Illegal token! |
| PP.Diag(Tok.getLocation(), diag::warn_pragma_unused_expected_var); |
| return; |
| } |
| |
| // We are execting a ')' or a ','. |
| if (Tok.is(tok::comma)) { |
| LexID = true; |
| continue; |
| } |
| |
| if (Tok.is(tok::r_paren)) { |
| RParenLoc = Tok.getLocation(); |
| break; |
| } |
| |
| // Illegal token! |
| PP.Diag(Tok.getLocation(), diag::warn_pragma_unused_expected_punc); |
| return; |
| } |
| |
| PP.Lex(Tok); |
| if (Tok.isNot(tok::eod)) { |
| PP.Diag(Tok.getLocation(), diag::warn_pragma_extra_tokens_at_eol) << |
| "unused"; |
| return; |
| } |
| |
| // Verify that we have a location for the right parenthesis. |
| assert(RParenLoc.isValid() && "Valid '#pragma unused' must have ')'"); |
| assert(!Identifiers.empty() && "Valid '#pragma unused' must have arguments"); |
| |
| // For each identifier token, insert into the token stream a |
| // annot_pragma_unused token followed by the identifier token. |
| // This allows us to cache a "#pragma unused" that occurs inside an inline |
| // C++ member function. |
| |
| Token *Toks = |
| (Token*) PP.getPreprocessorAllocator().Allocate( |
| sizeof(Token) * 2 * Identifiers.size(), llvm::alignOf<Token>()); |
| for (unsigned i=0; i != Identifiers.size(); i++) { |
| Token &pragmaUnusedTok = Toks[2*i], &idTok = Toks[2*i+1]; |
| pragmaUnusedTok.startToken(); |
| pragmaUnusedTok.setKind(tok::annot_pragma_unused); |
| pragmaUnusedTok.setLocation(UnusedLoc); |
| idTok = Identifiers[i]; |
| } |
| PP.EnterTokenStream(Toks, 2*Identifiers.size(), |
| /*DisableMacroExpansion=*/true, /*OwnsTokens=*/false); |
| } |
| |
| // #pragma weak identifier |
| // #pragma weak identifier '=' identifier |
| void PragmaWeakHandler::HandlePragma(Preprocessor &PP, |
| PragmaIntroducerKind Introducer, |
| Token &WeakTok) { |
| SourceLocation WeakLoc = WeakTok.getLocation(); |
| |
| Token Tok; |
| PP.Lex(Tok); |
| if (Tok.isNot(tok::identifier)) { |
| PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_identifier) << "weak"; |
| return; |
| } |
| |
| Token WeakName = Tok; |
| bool HasAlias = false; |
| Token AliasName; |
| |
| PP.Lex(Tok); |
| if (Tok.is(tok::equal)) { |
| HasAlias = true; |
| PP.Lex(Tok); |
| if (Tok.isNot(tok::identifier)) { |
| PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_identifier) |
| << "weak"; |
| return; |
| } |
| AliasName = Tok; |
| PP.Lex(Tok); |
| } |
| |
| if (Tok.isNot(tok::eod)) { |
| PP.Diag(Tok.getLocation(), diag::warn_pragma_extra_tokens_at_eol) << "weak"; |
| return; |
| } |
| |
| if (HasAlias) { |
| Token *Toks = |
| (Token*) PP.getPreprocessorAllocator().Allocate( |
| sizeof(Token) * 3, llvm::alignOf<Token>()); |
| Token &pragmaUnusedTok = Toks[0]; |
| pragmaUnusedTok.startToken(); |
| pragmaUnusedTok.setKind(tok::annot_pragma_weakalias); |
| pragmaUnusedTok.setLocation(WeakLoc); |
| Toks[1] = WeakName; |
| Toks[2] = AliasName; |
| PP.EnterTokenStream(Toks, 3, |
| /*DisableMacroExpansion=*/true, /*OwnsTokens=*/false); |
| } else { |
| Token *Toks = |
| (Token*) PP.getPreprocessorAllocator().Allocate( |
| sizeof(Token) * 2, llvm::alignOf<Token>()); |
| Token &pragmaUnusedTok = Toks[0]; |
| pragmaUnusedTok.startToken(); |
| pragmaUnusedTok.setKind(tok::annot_pragma_weak); |
| pragmaUnusedTok.setLocation(WeakLoc); |
| Toks[1] = WeakName; |
| PP.EnterTokenStream(Toks, 2, |
| /*DisableMacroExpansion=*/true, /*OwnsTokens=*/false); |
| } |
| } |
| |
| // #pragma redefine_extname identifier identifier |
| void PragmaRedefineExtnameHandler::HandlePragma(Preprocessor &PP, |
| PragmaIntroducerKind Introducer, |
| Token &RedefToken) { |
| SourceLocation RedefLoc = RedefToken.getLocation(); |
| |
| Token Tok; |
| PP.Lex(Tok); |
| if (Tok.isNot(tok::identifier)) { |
| PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_identifier) << |
| "redefine_extname"; |
| return; |
| } |
| |
| Token RedefName = Tok; |
| PP.Lex(Tok); |
| |
| if (Tok.isNot(tok::identifier)) { |
| PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_identifier) |
| << "redefine_extname"; |
| return; |
| } |
| |
| Token AliasName = Tok; |
| PP.Lex(Tok); |
| |
| if (Tok.isNot(tok::eod)) { |
| PP.Diag(Tok.getLocation(), diag::warn_pragma_extra_tokens_at_eol) << |
| "redefine_extname"; |
| return; |
| } |
| |
| Token *Toks = |
| (Token*) PP.getPreprocessorAllocator().Allocate( |
| sizeof(Token) * 3, llvm::alignOf<Token>()); |
| Token &pragmaRedefTok = Toks[0]; |
| pragmaRedefTok.startToken(); |
| pragmaRedefTok.setKind(tok::annot_pragma_redefine_extname); |
| pragmaRedefTok.setLocation(RedefLoc); |
| Toks[1] = RedefName; |
| Toks[2] = AliasName; |
| PP.EnterTokenStream(Toks, 3, |
| /*DisableMacroExpansion=*/true, /*OwnsTokens=*/false); |
| } |
| |
| |
| void |
| PragmaFPContractHandler::HandlePragma(Preprocessor &PP, |
| PragmaIntroducerKind Introducer, |
| Token &Tok) { |
| tok::OnOffSwitch OOS; |
| if (PP.LexOnOffSwitch(OOS)) |
| return; |
| |
| Token *Toks = |
| (Token*) PP.getPreprocessorAllocator().Allocate( |
| sizeof(Token) * 1, llvm::alignOf<Token>()); |
| new (Toks) Token(); |
| Toks[0].startToken(); |
| Toks[0].setKind(tok::annot_pragma_fp_contract); |
| Toks[0].setLocation(Tok.getLocation()); |
| Toks[0].setAnnotationValue(reinterpret_cast<void*>( |
| static_cast<uintptr_t>(OOS))); |
| PP.EnterTokenStream(Toks, 1, /*DisableMacroExpansion=*/true, |
| /*OwnsTokens=*/false); |
| } |
| |
| void |
| PragmaOpenCLExtensionHandler::HandlePragma(Preprocessor &PP, |
| PragmaIntroducerKind Introducer, |
| Token &Tok) { |
| PP.LexUnexpandedToken(Tok); |
| if (Tok.isNot(tok::identifier)) { |
| PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_identifier) << |
| "OPENCL"; |
| return; |
| } |
| IdentifierInfo *ename = Tok.getIdentifierInfo(); |
| SourceLocation NameLoc = Tok.getLocation(); |
| |
| PP.Lex(Tok); |
| if (Tok.isNot(tok::colon)) { |
| PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_colon) << ename; |
| return; |
| } |
| |
| PP.Lex(Tok); |
| if (Tok.isNot(tok::identifier)) { |
| PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_enable_disable); |
| return; |
| } |
| IdentifierInfo *op = Tok.getIdentifierInfo(); |
| |
| unsigned state; |
| if (op->isStr("enable")) { |
| state = 1; |
| } else if (op->isStr("disable")) { |
| state = 0; |
| } else { |
| PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_enable_disable); |
| return; |
| } |
| |
| PP.Lex(Tok); |
| if (Tok.isNot(tok::eod)) { |
| PP.Diag(Tok.getLocation(), diag::warn_pragma_extra_tokens_at_eol) << |
| "OPENCL EXTENSION"; |
| return; |
| } |
| |
| OpenCLExtData data(ename, state); |
| Token *Toks = |
| (Token*) PP.getPreprocessorAllocator().Allocate( |
| sizeof(Token) * 1, llvm::alignOf<Token>()); |
| new (Toks) Token(); |
| Toks[0].startToken(); |
| Toks[0].setKind(tok::annot_pragma_opencl_extension); |
| Toks[0].setLocation(NameLoc); |
| Toks[0].setAnnotationValue(data.getOpaqueValue()); |
| PP.EnterTokenStream(Toks, 1, /*DisableMacroExpansion=*/true, |
| /*OwnsTokens=*/false); |
| } |
| |
| /// \brief Handle '#pragma omp ...' when OpenMP is disabled. |
| /// |
| void |
| PragmaNoOpenMPHandler::HandlePragma(Preprocessor &PP, |
| PragmaIntroducerKind Introducer, |
| Token &FirstTok) { |
| if (PP.getDiagnostics().getDiagnosticLevel(diag::warn_pragma_omp_ignored, |
| FirstTok.getLocation()) != |
| DiagnosticsEngine::Ignored) { |
| PP.Diag(FirstTok, diag::warn_pragma_omp_ignored); |
| PP.getDiagnostics().setDiagnosticMapping(diag::warn_pragma_omp_ignored, |
| diag::MAP_IGNORE, |
| SourceLocation()); |
| } |
| PP.DiscardUntilEndOfDirective(); |
| } |
| |
| /// \brief Handle '#pragma omp ...' when OpenMP is enabled. |
| /// |
| void |
| PragmaOpenMPHandler::HandlePragma(Preprocessor &PP, |
| PragmaIntroducerKind Introducer, |
| Token &FirstTok) { |
| SmallVector<Token, 16> Pragma; |
| Token Tok; |
| Tok.startToken(); |
| Tok.setKind(tok::annot_pragma_openmp); |
| Tok.setLocation(FirstTok.getLocation()); |
| |
| while (Tok.isNot(tok::eod)) { |
| Pragma.push_back(Tok); |
| PP.Lex(Tok); |
| } |
| SourceLocation EodLoc = Tok.getLocation(); |
| Tok.startToken(); |
| Tok.setKind(tok::annot_pragma_openmp_end); |
| Tok.setLocation(EodLoc); |
| Pragma.push_back(Tok); |
| |
| Token *Toks = new Token[Pragma.size()]; |
| std::copy(Pragma.begin(), Pragma.end(), Toks); |
| PP.EnterTokenStream(Toks, Pragma.size(), |
| /*DisableMacroExpansion=*/true, /*OwnsTokens=*/true); |
| } |
| |
| /// \brief Handle the microsoft \#pragma comment extension. |
| /// |
| /// The syntax is: |
| /// \code |
| /// #pragma comment(linker, "foo") |
| /// \endcode |
| /// 'linker' is one of five identifiers: compiler, exestr, lib, linker, user. |
| /// "foo" is a string, which is fully macro expanded, and permits string |
| /// concatenation, embedded escape characters etc. See MSDN for more details. |
| void PragmaCommentHandler::HandlePragma(Preprocessor &PP, |
| PragmaIntroducerKind Introducer, |
| Token &Tok) { |
| SourceLocation CommentLoc = Tok.getLocation(); |
| PP.Lex(Tok); |
| if (Tok.isNot(tok::l_paren)) { |
| PP.Diag(CommentLoc, diag::err_pragma_comment_malformed); |
| return; |
| } |
| |
| // Read the identifier. |
| PP.Lex(Tok); |
| if (Tok.isNot(tok::identifier)) { |
| PP.Diag(CommentLoc, diag::err_pragma_comment_malformed); |
| return; |
| } |
| |
| // Verify that this is one of the 5 whitelisted options. |
| // FIXME: warn that 'exestr' is deprecated. |
| const IdentifierInfo *II = Tok.getIdentifierInfo(); |
| if (!II->isStr("compiler") && !II->isStr("exestr") && !II->isStr("lib") && |
| !II->isStr("linker") && !II->isStr("user")) { |
| PP.Diag(Tok.getLocation(), diag::err_pragma_comment_unknown_kind); |
| return; |
| } |
| |
| // Read the optional string if present. |
| PP.Lex(Tok); |
| std::string ArgumentString; |
| if (Tok.is(tok::comma) && !PP.LexStringLiteral(Tok, ArgumentString, |
| "pragma comment", |
| /*MacroExpansion=*/true)) |
| return; |
| |
| // FIXME: If the kind is "compiler" warn if the string is present (it is |
| // ignored). |
| // FIXME: 'lib' requires a comment string. |
| // FIXME: 'linker' requires a comment string, and has a specific list of |
| // things that are allowable. |
| |
| if (Tok.isNot(tok::r_paren)) { |
| PP.Diag(Tok.getLocation(), diag::err_pragma_comment_malformed); |
| return; |
| } |
| PP.Lex(Tok); // eat the r_paren. |
| |
| if (Tok.isNot(tok::eod)) { |
| PP.Diag(Tok.getLocation(), diag::err_pragma_comment_malformed); |
| return; |
| } |
| |
| // If the pragma is lexically sound, notify any interested PPCallbacks. |
| if (PP.getPPCallbacks()) |
| PP.getPPCallbacks()->PragmaComment(CommentLoc, II, ArgumentString); |
| } |
