Pragma.cpp revision ad5f8336f96911805bb625cc4fb1a4487745508a
15f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===--- Pragma.cpp - Pragma registration and handling --------------------===// 25f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 35f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// The LLVM Compiler Infrastructure 45f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 50bc735ffcfb223c0186419547abaa5c84482663eChris Lattner// This file is distributed under the University of Illinois Open Source 60bc735ffcfb223c0186419547abaa5c84482663eChris Lattner// License. See LICENSE.TXT for details. 75f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 85f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 95f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// This file implements the PragmaHandler/PragmaTable interfaces and implements 115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// pragma related methods of the Preprocessor class. 125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/Lex/Pragma.h" 1655fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "clang/Basic/FileManager.h" 1755fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "clang/Basic/SourceManager.h" 185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/Lex/HeaderSearch.h" 1955fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "clang/Lex/LexDiagnostic.h" 20a9d9145741ef77db45890911674705b81605b10bChris Lattner#include "clang/Lex/LiteralSupport.h" 21f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner#include "clang/Lex/MacroInfo.h" 2255fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "clang/Lex/Preprocessor.h" 23ff759a66526d6a985fb4efae69c6b798d83364dfDaniel Dunbar#include "llvm/Support/CrashRecoveryContext.h" 245505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar#include "llvm/Support/ErrorHandling.h" 252e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor#include <algorithm> 265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerusing namespace clang; 275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// Out-of-line destructor to provide a home for the class. 295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid SpencerPragmaHandler::~PragmaHandler() { 305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 33c72cc5072cdc1a1a6e05f9d0f962f293a69248c4Daniel Dunbar// EmptyPragmaHandler Implementation. 34c72cc5072cdc1a1a6e05f9d0f962f293a69248c4Daniel Dunbar//===----------------------------------------------------------------------===// 35c72cc5072cdc1a1a6e05f9d0f962f293a69248c4Daniel Dunbar 369b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios KyrtzidisEmptyPragmaHandler::EmptyPragmaHandler() {} 37c72cc5072cdc1a1a6e05f9d0f962f293a69248c4Daniel Dunbar 3880c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregorvoid EmptyPragmaHandler::HandlePragma(Preprocessor &PP, 3980c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor PragmaIntroducerKind Introducer, 4080c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &FirstToken) {} 41c72cc5072cdc1a1a6e05f9d0f962f293a69248c4Daniel Dunbar 42c72cc5072cdc1a1a6e05f9d0f962f293a69248c4Daniel Dunbar//===----------------------------------------------------------------------===// 435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// PragmaNamespace Implementation. 445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid SpencerPragmaNamespace::~PragmaNamespace() { 479b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis for (llvm::StringMap<PragmaHandler*>::iterator 489b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis I = Handlers.begin(), E = Handlers.end(); I != E; ++I) 499b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis delete I->second; 505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// FindHandler - Check to see if there is already a handler for the 535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// specified name. If not, return the handler for the null identifier if it 545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// exists, otherwise return null. If IgnoreNull is true (the default) then 555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// the null handler isn't returned on failure to match. 565f9e272e632e951b1efe824cd16acb4d96077930Chris LattnerPragmaHandler *PragmaNamespace::FindHandler(StringRef Name, 575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool IgnoreNull) const { 589b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis if (PragmaHandler *Handler = Handlers.lookup(Name)) 599b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis return Handler; 605f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner return IgnoreNull ? 0 : Handlers.lookup(StringRef()); 619b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis} 621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 639b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidisvoid PragmaNamespace::AddPragma(PragmaHandler *Handler) { 649b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis assert(!Handlers.lookup(Handler->getName()) && 659b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis "A handler with this name is already registered in this namespace"); 669b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis llvm::StringMapEntry<PragmaHandler *> &Entry = 679b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis Handlers.GetOrCreateValue(Handler->getName()); 689b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis Entry.setValue(Handler); 695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 714095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbarvoid PragmaNamespace::RemovePragmaHandler(PragmaHandler *Handler) { 729b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis assert(Handlers.lookup(Handler->getName()) && 739b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis "Handler not registered in this namespace"); 749b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis Handlers.erase(Handler->getName()); 754095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar} 764095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar 7780c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregorvoid PragmaNamespace::HandlePragma(Preprocessor &PP, 7880c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor PragmaIntroducerKind Introducer, 7980c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &Tok) { 805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Read the 'namespace' that the directive is in, e.g. STDC. Do not macro 815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // expand it, the user can have a STDC #define, that should not affect this. 825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PP.LexUnexpandedToken(Tok); 831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Get the handler for this token. If there is no handler, ignore the pragma. 859b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaHandler *Handler 869b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis = FindHandler(Tok.getIdentifierInfo() ? Tok.getIdentifierInfo()->getName() 875f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner : StringRef(), 889b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis /*IgnoreNull=*/false); 89af7cdf45da4925f788e87a4c318ee67404646088Chris Lattner if (Handler == 0) { 90af7cdf45da4925f788e87a4c318ee67404646088Chris Lattner PP.Diag(Tok, diag::warn_pragma_ignored); 91af7cdf45da4925f788e87a4c318ee67404646088Chris Lattner return; 92af7cdf45da4925f788e87a4c318ee67404646088Chris Lattner } 931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Otherwise, pass it down. 9580c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Handler->HandlePragma(PP, Introducer, Tok); 965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// Preprocessor Pragma Directive Handling. 1005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 1015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 102b6e95b7752893f66e9d067b4287dff2dbf4a5802James Dennett/// HandlePragmaDirective - The "\#pragma" directive has been parsed. Lex the 1035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// rest of the pragma, passing it to the registered pragma handlers. 10480c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregorvoid Preprocessor::HandlePragmaDirective(unsigned Introducer) { 1056fe6a49c4058211ff4489023c78615ec0266c5ffJordan Rose if (!PragmasEnabled) 1066fe6a49c4058211ff4489023c78615ec0266c5ffJordan Rose return; 1076fe6a49c4058211ff4489023c78615ec0266c5ffJordan Rose 1085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ++NumPragma; 1091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Invoke the first level of pragma handlers which reads the namespace id. 111d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner Token Tok; 11280c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor PragmaHandlers->HandlePragma(*this, PragmaIntroducerKind(Introducer), Tok); 1131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If the pragma handler didn't read the rest of the line, consume it now. 115b2eb53d9fd973a1a02e05e67a3307b3efd12eff2Peter Collingbourne if ((CurTokenLexer && CurTokenLexer->isParsingPreprocessorDirective()) 116b2eb53d9fd973a1a02e05e67a3307b3efd12eff2Peter Collingbourne || (CurPPLexer && CurPPLexer->ParsingPreprocessorDirective)) 1175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DiscardUntilEndOfDirective(); 1185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 1195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 12014e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidisnamespace { 12114e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis/// \brief Helper class for \see Preprocessor::Handle_Pragma. 12214e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidisclass LexingFor_PragmaRAII { 12314e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis Preprocessor &PP; 12414e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis bool InMacroArgPreExpansion; 12514e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis bool Failed; 12614e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis Token &OutTok; 12714e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis Token PragmaTok; 12814e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis 12914e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidispublic: 13014e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis LexingFor_PragmaRAII(Preprocessor &PP, bool InMacroArgPreExpansion, 13114e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis Token &Tok) 13214e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis : PP(PP), InMacroArgPreExpansion(InMacroArgPreExpansion), 13314e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis Failed(false), OutTok(Tok) { 13414e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis if (InMacroArgPreExpansion) { 13514e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis PragmaTok = OutTok; 13614e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis PP.EnableBacktrackAtThisPos(); 13714e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis } 13814e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis } 13914e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis 14014e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis ~LexingFor_PragmaRAII() { 14114e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis if (InMacroArgPreExpansion) { 14214e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis if (Failed) { 14314e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis PP.CommitBacktrackedTokens(); 14414e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis } else { 14514e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis PP.Backtrack(); 14614e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis OutTok = PragmaTok; 14714e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis } 14814e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis } 14914e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis } 15014e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis 15114e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis void failed() { 15214e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis Failed = true; 15314e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis } 15414e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis}; 15514e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis} 15614e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis 1575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// Handle_Pragma - Read a _Pragma directive, slice it up, process it, then 1585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// return the first token after the directive. The _Pragma token has just 1595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// been read into 'Tok'. 160d217773f106856a11879ec79dc468efefaf2ee75Chris Lattnervoid Preprocessor::Handle_Pragma(Token &Tok) { 16114e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis 16214e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis // This works differently if we are pre-expanding a macro argument. 16314e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis // In that case we don't actually "activate" the pragma now, we only lex it 16414e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis // until we are sure it is lexically correct and then we backtrack so that 16514e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis // we activate the pragma whenever we encounter the tokens again in the token 16614e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis // stream. This ensures that we will activate it in the correct location 16714e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis // or that we will ignore it if it never enters the token stream, e.g: 16814e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis // 16914e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis // #define EMPTY(x) 17014e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis // #define INACTIVE(x) EMPTY(x) 17114e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis // INACTIVE(_Pragma("clang diagnostic ignored \"-Wconversion\"")) 17214e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis 17314e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis LexingFor_PragmaRAII _PragmaLexing(*this, InMacroArgPreExpansion, Tok); 17414e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis 1755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Remember the pragma token location. 1765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation PragmaLoc = Tok.getLocation(); 1771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Read the '('. 1795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Lex(Tok); 1803692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner if (Tok.isNot(tok::l_paren)) { 1813692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner Diag(PragmaLoc, diag::err__Pragma_malformed); 18214e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis return _PragmaLexing.failed(); 1833692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner } 1845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Read the '"..."'. 1865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Lex(Tok); 1870b91cc47a5642de2e1f567fe0f29420acdcdebbeRichard Smith if (!tok::isStringLiteral(Tok.getKind())) { 1883692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner Diag(PragmaLoc, diag::err__Pragma_malformed); 18999831e4677a7e2e051af636221694d60ba31fcdbRichard Smith // Skip this token, and the ')', if present. 19099831e4677a7e2e051af636221694d60ba31fcdbRichard Smith if (Tok.isNot(tok::r_paren)) 19199831e4677a7e2e051af636221694d60ba31fcdbRichard Smith Lex(Tok); 19299831e4677a7e2e051af636221694d60ba31fcdbRichard Smith if (Tok.is(tok::r_paren)) 19399831e4677a7e2e051af636221694d60ba31fcdbRichard Smith Lex(Tok); 19414e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis return _PragmaLexing.failed(); 19599831e4677a7e2e051af636221694d60ba31fcdbRichard Smith } 19699831e4677a7e2e051af636221694d60ba31fcdbRichard Smith 19799831e4677a7e2e051af636221694d60ba31fcdbRichard Smith if (Tok.hasUDSuffix()) { 19899831e4677a7e2e051af636221694d60ba31fcdbRichard Smith Diag(Tok, diag::err_invalid_string_udl); 19999831e4677a7e2e051af636221694d60ba31fcdbRichard Smith // Skip this token, and the ')', if present. 20099831e4677a7e2e051af636221694d60ba31fcdbRichard Smith Lex(Tok); 20199831e4677a7e2e051af636221694d60ba31fcdbRichard Smith if (Tok.is(tok::r_paren)) 20299831e4677a7e2e051af636221694d60ba31fcdbRichard Smith Lex(Tok); 20314e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis return _PragmaLexing.failed(); 2043692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner } 2051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Remember the string. 20714e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis Token StrTok = Tok; 2085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Read the ')'. 2105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Lex(Tok); 2113692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner if (Tok.isNot(tok::r_paren)) { 2123692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner Diag(PragmaLoc, diag::err__Pragma_malformed); 21314e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis return _PragmaLexing.failed(); 2143692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner } 2151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 21614e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis if (InMacroArgPreExpansion) 21714e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis return; 21814e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis 219e7fb48466afcbf2c4ccdfa658824282fdc3c512cChris Lattner SourceLocation RParenLoc = Tok.getLocation(); 22014e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis std::string StrVal = getSpelling(StrTok); 2211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2220b91cc47a5642de2e1f567fe0f29420acdcdebbeRichard Smith // The _Pragma is lexically sound. Destringize according to C11 6.10.9.1: 2230b91cc47a5642de2e1f567fe0f29420acdcdebbeRichard Smith // "The string literal is destringized by deleting any encoding prefix, 224a9d9145741ef77db45890911674705b81605b10bChris Lattner // deleting the leading and trailing double-quotes, replacing each escape 225a9d9145741ef77db45890911674705b81605b10bChris Lattner // sequence \" by a double-quote, and replacing each escape sequence \\ by a 226a9d9145741ef77db45890911674705b81605b10bChris Lattner // single backslash." 2270b91cc47a5642de2e1f567fe0f29420acdcdebbeRichard Smith if (StrVal[0] == 'L' || StrVal[0] == 'U' || 2280b91cc47a5642de2e1f567fe0f29420acdcdebbeRichard Smith (StrVal[0] == 'u' && StrVal[1] != '8')) 2295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer StrVal.erase(StrVal.begin()); 2300b91cc47a5642de2e1f567fe0f29420acdcdebbeRichard Smith else if (StrVal[0] == 'u') 2310b91cc47a5642de2e1f567fe0f29420acdcdebbeRichard Smith StrVal.erase(StrVal.begin(), StrVal.begin() + 2); 2320b91cc47a5642de2e1f567fe0f29420acdcdebbeRichard Smith 2330b91cc47a5642de2e1f567fe0f29420acdcdebbeRichard Smith if (StrVal[0] == 'R') { 2340b91cc47a5642de2e1f567fe0f29420acdcdebbeRichard Smith // FIXME: C++11 does not specify how to handle raw-string-literals here. 2350b91cc47a5642de2e1f567fe0f29420acdcdebbeRichard Smith // We strip off the 'R', the quotes, the d-char-sequences, and the parens. 2360b91cc47a5642de2e1f567fe0f29420acdcdebbeRichard Smith assert(StrVal[1] == '"' && StrVal[StrVal.size() - 1] == '"' && 2370b91cc47a5642de2e1f567fe0f29420acdcdebbeRichard Smith "Invalid raw string token!"); 2380b91cc47a5642de2e1f567fe0f29420acdcdebbeRichard Smith 2390b91cc47a5642de2e1f567fe0f29420acdcdebbeRichard Smith // Measure the length of the d-char-sequence. 2400b91cc47a5642de2e1f567fe0f29420acdcdebbeRichard Smith unsigned NumDChars = 0; 2410b91cc47a5642de2e1f567fe0f29420acdcdebbeRichard Smith while (StrVal[2 + NumDChars] != '(') { 2420b91cc47a5642de2e1f567fe0f29420acdcdebbeRichard Smith assert(NumDChars < (StrVal.size() - 5) / 2 && 2430b91cc47a5642de2e1f567fe0f29420acdcdebbeRichard Smith "Invalid raw string token!"); 2440b91cc47a5642de2e1f567fe0f29420acdcdebbeRichard Smith ++NumDChars; 2450b91cc47a5642de2e1f567fe0f29420acdcdebbeRichard Smith } 2460b91cc47a5642de2e1f567fe0f29420acdcdebbeRichard Smith assert(StrVal[StrVal.size() - 2 - NumDChars] == ')'); 2470b91cc47a5642de2e1f567fe0f29420acdcdebbeRichard Smith 2480b91cc47a5642de2e1f567fe0f29420acdcdebbeRichard Smith // Remove 'R " d-char-sequence' and 'd-char-sequence "'. We'll replace the 2490b91cc47a5642de2e1f567fe0f29420acdcdebbeRichard Smith // parens below. 2500b91cc47a5642de2e1f567fe0f29420acdcdebbeRichard Smith StrVal.erase(0, 2 + NumDChars); 2510b91cc47a5642de2e1f567fe0f29420acdcdebbeRichard Smith StrVal.erase(StrVal.size() - 1 - NumDChars); 2520b91cc47a5642de2e1f567fe0f29420acdcdebbeRichard Smith } else { 2530b91cc47a5642de2e1f567fe0f29420acdcdebbeRichard Smith assert(StrVal[0] == '"' && StrVal[StrVal.size()-1] == '"' && 2540b91cc47a5642de2e1f567fe0f29420acdcdebbeRichard Smith "Invalid string token!"); 2550b91cc47a5642de2e1f567fe0f29420acdcdebbeRichard Smith 2560b91cc47a5642de2e1f567fe0f29420acdcdebbeRichard Smith // Remove escaped quotes and escapes. 257269cc2daf3a36ad878ea1d4cb356aa38311f6e2dBenjamin Kramer unsigned ResultPos = 1; 258269cc2daf3a36ad878ea1d4cb356aa38311f6e2dBenjamin Kramer for (unsigned i = 1, e = StrVal.size() - 2; i != e; ++i) { 259269cc2daf3a36ad878ea1d4cb356aa38311f6e2dBenjamin Kramer if (StrVal[i] != '\\' || 260269cc2daf3a36ad878ea1d4cb356aa38311f6e2dBenjamin Kramer (StrVal[i + 1] != '\\' && StrVal[i + 1] != '"')) { 2610b91cc47a5642de2e1f567fe0f29420acdcdebbeRichard Smith // \\ -> '\' and \" -> '"'. 262269cc2daf3a36ad878ea1d4cb356aa38311f6e2dBenjamin Kramer StrVal[ResultPos++] = StrVal[i]; 2630b91cc47a5642de2e1f567fe0f29420acdcdebbeRichard Smith } 2640b91cc47a5642de2e1f567fe0f29420acdcdebbeRichard Smith } 265269cc2daf3a36ad878ea1d4cb356aa38311f6e2dBenjamin Kramer StrVal.erase(StrVal.begin() + ResultPos, StrVal.end() - 2); 2660b91cc47a5642de2e1f567fe0f29420acdcdebbeRichard Smith } 2671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Remove the front quote, replacing it with a space, so that the pragma 2695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // contents appear to have a space before them. 2705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer StrVal[0] = ' '; 2711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2721fa495304c81e03f07f278a47b5efe9317104aabChris Lattner // Replace the terminating quote with a \n. 2735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer StrVal[StrVal.size()-1] = '\n'; 2741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 275a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne // Plop the string (including the newline and trailing null) into a buffer 276a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne // where we can lex it. 277a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne Token TmpTok; 278a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne TmpTok.startToken(); 279374b3837d676133fcc1eb70a25c8baf8ec4a5c4aDmitri Gribenko CreateString(StrVal, TmpTok); 280a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne SourceLocation TokLoc = TmpTok.getLocation(); 281a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne 282a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne // Make and enter a lexer object so that we lex and expand the tokens just 283a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne // like any others. 284a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne Lexer *TL = Lexer::Create_PragmaLexer(TokLoc, PragmaLoc, RParenLoc, 285a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne StrVal.size(), *this); 286a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne 287a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne EnterSourceFileWithLexer(TL, 0); 288a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne 289a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne // With everything set up, lex this as a #pragma directive. 290a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne HandlePragmaDirective(PIK__Pragma); 2911ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 2921ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall // Finally, return whatever came after the pragma directive. 2931ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall return Lex(Tok); 2941ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall} 2951ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 2961ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall/// HandleMicrosoft__pragma - Like Handle_Pragma except the pragma text 2971ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall/// is not enclosed within a string literal. 2981ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCallvoid Preprocessor::HandleMicrosoft__pragma(Token &Tok) { 2991ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall // Remember the pragma token location. 3001ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall SourceLocation PragmaLoc = Tok.getLocation(); 3011ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 3021ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall // Read the '('. 3031ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall Lex(Tok); 3041ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall if (Tok.isNot(tok::l_paren)) { 3051ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall Diag(PragmaLoc, diag::err__Pragma_malformed); 3061ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall return; 3071ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall } 3081ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 309a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne // Get the tokens enclosed within the __pragma(), as well as the final ')'. 3105f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<Token, 32> PragmaToks; 3111ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall int NumParens = 0; 3121ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall Lex(Tok); 3131ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall while (Tok.isNot(tok::eof)) { 314a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne PragmaToks.push_back(Tok); 3151ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall if (Tok.is(tok::l_paren)) 3161ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall NumParens++; 3171ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall else if (Tok.is(tok::r_paren) && NumParens-- == 0) 3181ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall break; 3191ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall Lex(Tok); 3201ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall } 3211ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 3223da92a9d21f707c164797dd967ba894b2282b343John McCall if (Tok.is(tok::eof)) { 3233da92a9d21f707c164797dd967ba894b2282b343John McCall Diag(PragmaLoc, diag::err_unterminated___pragma); 3243da92a9d21f707c164797dd967ba894b2282b343John McCall return; 3253da92a9d21f707c164797dd967ba894b2282b343John McCall } 3263da92a9d21f707c164797dd967ba894b2282b343John McCall 327a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne PragmaToks.front().setFlag(Token::LeadingSpace); 3281ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 32984021556baceb76eedf7d44be8ba71d9b8cfaccePeter Collingbourne // Replace the ')' with an EOD to mark the end of the pragma. 33084021556baceb76eedf7d44be8ba71d9b8cfaccePeter Collingbourne PragmaToks.back().setKind(tok::eod); 3311ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 332a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne Token *TokArray = new Token[PragmaToks.size()]; 333a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne std::copy(PragmaToks.begin(), PragmaToks.end(), TokArray); 3341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 335a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne // Push the tokens onto the stack. 336a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne EnterTokenStream(TokArray, PragmaToks.size(), true, true); 3375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // With everything set up, lex this as a #pragma directive. 339a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne HandlePragmaDirective(PIK___pragma); 3405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 341a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne // Finally, return whatever came after the pragma directive. 342a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne return Lex(Tok); 343a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne} 3445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 345b6e95b7752893f66e9d067b4287dff2dbf4a5802James Dennett/// HandlePragmaOnce - Handle \#pragma once. OnceTok is the 'once'. 3465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 347d217773f106856a11879ec79dc468efefaf2ee75Chris Lattnervoid Preprocessor::HandlePragmaOnce(Token &OnceTok) { 3485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (isInPrimaryFile()) { 3495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(OnceTok, diag::pp_pragma_once_in_main_file); 3505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return; 3515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 3521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Get the current file lexer we're looking at. Ignore _Pragma 'files' etc. 3545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Mark the file as a once-only file now. 3552b2453a7d8fe732561795431f39ceb2b2a832d84Chris Lattner HeaderInfo.MarkFileIncludeOnce(getCurrentFileLexer()->getFileEntry()); 3565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 3575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3582243449253475574fc6f14986ff8f7fce5d46799Chris Lattnervoid Preprocessor::HandlePragmaMark() { 35917ff58a63197b398ae52697b088dc0fb8b255519Ted Kremenek assert(CurPPLexer && "No current lexer?"); 3606896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner if (CurLexer) 3616896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner CurLexer->ReadToEndOfLine(); 3626896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner else 3636896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner CurPTHLexer->DiscardToEndOfLine(); 3642243449253475574fc6f14986ff8f7fce5d46799Chris Lattner} 3652243449253475574fc6f14986ff8f7fce5d46799Chris Lattner 3662243449253475574fc6f14986ff8f7fce5d46799Chris Lattner 367b6e95b7752893f66e9d067b4287dff2dbf4a5802James Dennett/// HandlePragmaPoison - Handle \#pragma GCC poison. PoisonTok is the 'poison'. 3685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 369d217773f106856a11879ec79dc468efefaf2ee75Chris Lattnervoid Preprocessor::HandlePragmaPoison(Token &PoisonTok) { 370d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner Token Tok; 3715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer while (1) { 3735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Read the next token to poison. While doing this, pretend that we are 3745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // skipping while reading the identifier to poison. 3755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // This avoids errors on code like: 3765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // #pragma GCC poison X 3775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // #pragma GCC poison X 37868a91d5736c2c03d60a9d1c59d08191b8e0d6c52Ted Kremenek if (CurPPLexer) CurPPLexer->LexingRawMode = true; 3795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer LexUnexpandedToken(Tok); 38068a91d5736c2c03d60a9d1c59d08191b8e0d6c52Ted Kremenek if (CurPPLexer) CurPPLexer->LexingRawMode = false; 3811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If we reached the end of line, we're done. 38384021556baceb76eedf7d44be8ba71d9b8cfaccePeter Collingbourne if (Tok.is(tok::eod)) return; 3841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Can only poison identifiers. 386c4bf2b9afb7d47445a9dc6bc848657098a4e3851Abramo Bagnara if (Tok.isNot(tok::raw_identifier)) { 3875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(Tok, diag::err_pp_invalid_poison); 3885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return; 3895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 3901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Look up the identifier info for the token. We disabled identifier lookup 3925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // by saying we're skipping contents, so we need to do this manually. 3935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierInfo *II = LookUpIdentifierInfo(Tok); 3941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Already poisoned. 3965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (II->isPoisoned()) continue; 3971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If this is a macro identifier, emit a warning. 3990edde55077cc3cb9fffeba19f5936f05a68c8e2bChris Lattner if (II->hasMacroDefinition()) 4005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(Tok, diag::pp_poisoning_existing_macro); 4011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Finally, poison it! 4035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer II->setIsPoisoned(); 404eee242ff426bf79149f221798966e58688383c1eDouglas Gregor if (II->isFromAST()) 405eee242ff426bf79149f221798966e58688383c1eDouglas Gregor II->setChangedSinceDeserialization(); 4065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 4075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 4085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 409b6e95b7752893f66e9d067b4287dff2dbf4a5802James Dennett/// HandlePragmaSystemHeader - Implement \#pragma GCC system_header. We know 4105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// that the whole directive has been parsed. 411d217773f106856a11879ec79dc468efefaf2ee75Chris Lattnervoid Preprocessor::HandlePragmaSystemHeader(Token &SysHeaderTok) { 4125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (isInPrimaryFile()) { 4135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(SysHeaderTok, diag::pp_pragma_sysheader_in_main_file); 4145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return; 4155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 4161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Get the current file lexer we're looking at. Ignore _Pragma 'files' etc. 41835c10c25ddec4effbd26dead23ea5b04ee32f45aTed Kremenek PreprocessorLexer *TheLexer = getCurrentFileLexer(); 4191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Mark the file as a system header. 4212b2453a7d8fe732561795431f39ceb2b2a832d84Chris Lattner HeaderInfo.MarkFileSystemHeader(TheLexer->getFileEntry()); 4221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4246896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner PresumedLoc PLoc = SourceMgr.getPresumedLoc(SysHeaderTok.getLocation()); 425cb7b1e17b63967317ab5cc55682168cf0380519aDouglas Gregor if (PLoc.isInvalid()) 426cb7b1e17b63967317ab5cc55682168cf0380519aDouglas Gregor return; 427cb7b1e17b63967317ab5cc55682168cf0380519aDouglas Gregor 42865aa6885818d4b4eea2e5a9d12085b2398148662Jay Foad unsigned FilenameID = SourceMgr.getLineTableFilenameID(PLoc.getFilename()); 4291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 430784c257c8f5c3a737b0ae1dceb5d54d29b6637cfChris Lattner // Notify the client, if desired, that we are in a new source file. 431784c257c8f5c3a737b0ae1dceb5d54d29b6637cfChris Lattner if (Callbacks) 432784c257c8f5c3a737b0ae1dceb5d54d29b6637cfChris Lattner Callbacks->FileChanged(SysHeaderTok.getLocation(), 433784c257c8f5c3a737b0ae1dceb5d54d29b6637cfChris Lattner PPCallbacks::SystemHeaderPragma, SrcMgr::C_System); 434784c257c8f5c3a737b0ae1dceb5d54d29b6637cfChris Lattner 4356896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner // Emit a line marker. This will change any source locations from this point 4366896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner // forward to realize they are in a system header. 4376896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner // Create a line note with this information. 438142b35e25b579e2a883d6ca37c3c1121f562f242Jordan Rose SourceMgr.AddLineNote(SysHeaderTok.getLocation(), PLoc.getLine()+1, 439142b35e25b579e2a883d6ca37c3c1121f562f242Jordan Rose FilenameID, /*IsEntry=*/false, /*IsExit=*/false, 440142b35e25b579e2a883d6ca37c3c1121f562f242Jordan Rose /*IsSystem=*/true, /*IsExternC=*/false); 4415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 4425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 443b6e95b7752893f66e9d067b4287dff2dbf4a5802James Dennett/// HandlePragmaDependency - Handle \#pragma GCC dependency "foo" blah. 4445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 445d217773f106856a11879ec79dc468efefaf2ee75Chris Lattnervoid Preprocessor::HandlePragmaDependency(Token &DependencyTok) { 446d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner Token FilenameTok; 44768a91d5736c2c03d60a9d1c59d08191b8e0d6c52Ted Kremenek CurPPLexer->LexIncludeFilename(FilenameTok); 4485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 44984021556baceb76eedf7d44be8ba71d9b8cfaccePeter Collingbourne // If the token kind is EOD, the error has already been diagnosed. 45084021556baceb76eedf7d44be8ba71d9b8cfaccePeter Collingbourne if (FilenameTok.is(tok::eod)) 4515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return; 4521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Reserve a buffer to get the spelling. 454f7ccbad5d9949e7ddd1cbef43d482553b811e026Dylan Noblesmith SmallString<128> FilenameBuffer; 455453091cc2082e207ea2c2dda645a9bc01b37fb0cDouglas Gregor bool Invalid = false; 4565f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef Filename = getSpelling(FilenameTok, FilenameBuffer, &Invalid); 457453091cc2082e207ea2c2dda645a9bc01b37fb0cDouglas Gregor if (Invalid) 458453091cc2082e207ea2c2dda645a9bc01b37fb0cDouglas Gregor return; 4591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 460a139481e62fdb209d9d87a54a5733f989d2e8d51Chris Lattner bool isAngled = 461a139481e62fdb209d9d87a54a5733f989d2e8d51Chris Lattner GetIncludeFilenameSpelling(FilenameTok.getLocation(), Filename); 4625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If GetIncludeFilenameSpelling set the start ptr to null, there was an 4635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // error. 464a139481e62fdb209d9d87a54a5733f989d2e8d51Chris Lattner if (Filename.empty()) 4655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return; 4661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Search include directories for this file. 4685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const DirectoryLookup *CurDir; 469bc3f628815b3841dc99109e7f67f9afa7793bc94Lawrence Crowl const FileEntry *File = LookupFile(FilenameTok.getLocation(), Filename, 470bc3f628815b3841dc99109e7f67f9afa7793bc94Lawrence Crowl isAngled, 0, CurDir, NULL, NULL, NULL); 47156b05c8829efd13b7e5b333f8f587c71d025c67dChris Lattner if (File == 0) { 472f84139a1331c63c998e8b7d54148c75ac0b48ccdEli Friedman if (!SuppressIncludeNotFoundError) 473f84139a1331c63c998e8b7d54148c75ac0b48ccdEli Friedman Diag(FilenameTok, diag::err_pp_file_not_found) << Filename; 47456b05c8829efd13b7e5b333f8f587c71d025c67dChris Lattner return; 47556b05c8829efd13b7e5b333f8f587c71d025c67dChris Lattner } 4761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4772b2453a7d8fe732561795431f39ceb2b2a832d84Chris Lattner const FileEntry *CurFile = getCurrentFileLexer()->getFileEntry(); 4785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 4795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If this file is older than the file it depends on, emit a diagnostic. 4805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (CurFile && CurFile->getModificationTime() < File->getModificationTime()) { 4815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Lex tokens at the end of the message and include them in the message. 4825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer std::string Message; 4835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Lex(DependencyTok); 48484021556baceb76eedf7d44be8ba71d9b8cfaccePeter Collingbourne while (DependencyTok.isNot(tok::eod)) { 4855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Message += getSpelling(DependencyTok) + " "; 4865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Lex(DependencyTok); 4875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 4881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 48996de25986d28171945db96a6c6a54f91fd12ae4bChris Lattner // Remove the trailing ' ' if present. 49096de25986d28171945db96a6c6a54f91fd12ae4bChris Lattner if (!Message.empty()) 49196de25986d28171945db96a6c6a54f91fd12ae4bChris Lattner Message.erase(Message.end()-1); 49256b05c8829efd13b7e5b333f8f587c71d025c67dChris Lattner Diag(FilenameTok, diag::pp_out_of_date_dependency) << Message; 4935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 4945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 4955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 4967adf79a620cb7fbde0608e21727425930676b7dbReid Kleckner/// ParsePragmaPushOrPopMacro - Handle parsing of pragma push_macro/pop_macro. 497f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// Return the IdentifierInfo* associated with the macro to push or pop. 498f47724bf78299c7a50f008e0443c5f9f9f279ddcChris LattnerIdentifierInfo *Preprocessor::ParsePragmaPushOrPopMacro(Token &Tok) { 499f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Remember the pragma token location. 500f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner Token PragmaTok = Tok; 501f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 502f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Read the '('. 503f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner Lex(Tok); 504f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner if (Tok.isNot(tok::l_paren)) { 505f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner Diag(PragmaTok.getLocation(), diag::err_pragma_push_pop_macro_malformed) 506f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner << getSpelling(PragmaTok); 507f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner return 0; 508f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner } 509f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 510f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Read the macro name string. 511f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner Lex(Tok); 512f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner if (Tok.isNot(tok::string_literal)) { 513f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner Diag(PragmaTok.getLocation(), diag::err_pragma_push_pop_macro_malformed) 514f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner << getSpelling(PragmaTok); 515f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner return 0; 516f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner } 517f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 51899831e4677a7e2e051af636221694d60ba31fcdbRichard Smith if (Tok.hasUDSuffix()) { 51999831e4677a7e2e051af636221694d60ba31fcdbRichard Smith Diag(Tok, diag::err_invalid_string_udl); 52099831e4677a7e2e051af636221694d60ba31fcdbRichard Smith return 0; 52199831e4677a7e2e051af636221694d60ba31fcdbRichard Smith } 52299831e4677a7e2e051af636221694d60ba31fcdbRichard Smith 523f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Remember the macro string. 524f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner std::string StrVal = getSpelling(Tok); 525f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 526f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Read the ')'. 527f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner Lex(Tok); 528f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner if (Tok.isNot(tok::r_paren)) { 529f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner Diag(PragmaTok.getLocation(), diag::err_pragma_push_pop_macro_malformed) 530f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner << getSpelling(PragmaTok); 531f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner return 0; 532f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner } 533f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 534f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner assert(StrVal[0] == '"' && StrVal[StrVal.size()-1] == '"' && 535f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner "Invalid string token!"); 536f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 537f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Create a Token from the string. 538f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner Token MacroTok; 539f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner MacroTok.startToken(); 540c4bf2b9afb7d47445a9dc6bc848657098a4e3851Abramo Bagnara MacroTok.setKind(tok::raw_identifier); 541374b3837d676133fcc1eb70a25c8baf8ec4a5c4aDmitri Gribenko CreateString(StringRef(&StrVal[1], StrVal.size() - 2), MacroTok); 542f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 543f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Get the IdentifierInfo of MacroToPushTok. 544f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner return LookUpIdentifierInfo(MacroTok); 545f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner} 546f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 547b6e95b7752893f66e9d067b4287dff2dbf4a5802James Dennett/// \brief Handle \#pragma push_macro. 548b6e95b7752893f66e9d067b4287dff2dbf4a5802James Dennett/// 549f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// The syntax is: 550b6e95b7752893f66e9d067b4287dff2dbf4a5802James Dennett/// \code 551e74dc199e95cc523c8806e0de41d8814e8bc5c42Dmitri Gribenko/// #pragma push_macro("macro") 552b6e95b7752893f66e9d067b4287dff2dbf4a5802James Dennett/// \endcode 553f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattnervoid Preprocessor::HandlePragmaPushMacro(Token &PushMacroTok) { 554f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Parse the pragma directive and get the macro IdentifierInfo*. 555f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner IdentifierInfo *IdentInfo = ParsePragmaPushOrPopMacro(PushMacroTok); 556f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner if (!IdentInfo) return; 557f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 558f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Get the MacroInfo associated with IdentInfo. 559f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner MacroInfo *MI = getMacroInfo(IdentInfo); 560f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 561f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner if (MI) { 562f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Allow the original MacroInfo to be redefined later. 563f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner MI->setIsAllowRedefinitionsWithoutWarning(true); 564f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner } 565f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 566f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Push the cloned MacroInfo so we can retrieve it later. 5679818a1d443e97677dd3422305de9cc2b1fb2a8c1Argyrios Kyrtzidis PragmaPushMacroInfo[IdentInfo].push_back(MI); 568f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner} 569f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 570b6e95b7752893f66e9d067b4287dff2dbf4a5802James Dennett/// \brief Handle \#pragma pop_macro. 571b6e95b7752893f66e9d067b4287dff2dbf4a5802James Dennett/// 572f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// The syntax is: 573b6e95b7752893f66e9d067b4287dff2dbf4a5802James Dennett/// \code 574f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// #pragma pop_macro("macro") 575b6e95b7752893f66e9d067b4287dff2dbf4a5802James Dennett/// \endcode 576f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattnervoid Preprocessor::HandlePragmaPopMacro(Token &PopMacroTok) { 577f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner SourceLocation MessageLoc = PopMacroTok.getLocation(); 578f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 579f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Parse the pragma directive and get the macro IdentifierInfo*. 580f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner IdentifierInfo *IdentInfo = ParsePragmaPushOrPopMacro(PopMacroTok); 581f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner if (!IdentInfo) return; 582f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 583f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Find the vector<MacroInfo*> associated with the macro. 584f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner llvm::DenseMap<IdentifierInfo*, std::vector<MacroInfo*> >::iterator iter = 585f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner PragmaPushMacroInfo.find(IdentInfo); 586f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner if (iter != PragmaPushMacroInfo.end()) { 5878a64bb58c3b24d7d97895e435bbc0965c99bd3beAlexander Kornienko // Forget the MacroInfo currently associated with IdentInfo. 5889818a1d443e97677dd3422305de9cc2b1fb2a8c1Argyrios Kyrtzidis if (MacroDirective *CurrentMD = getMacroDirective(IdentInfo)) { 589c56fff7fd231aebf4b152f60f8f11ef91835c48aArgyrios Kyrtzidis MacroInfo *MI = CurrentMD->getMacroInfo(); 590c56fff7fd231aebf4b152f60f8f11ef91835c48aArgyrios Kyrtzidis if (MI->isWarnIfUnused()) 591c56fff7fd231aebf4b152f60f8f11ef91835c48aArgyrios Kyrtzidis WarnUnusedMacroLocs.erase(MI->getDefinitionLoc()); 592c56fff7fd231aebf4b152f60f8f11ef91835c48aArgyrios Kyrtzidis appendMacroDirective(IdentInfo, AllocateUndefMacroDirective(MessageLoc)); 5930827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis } 594f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 595f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Get the MacroInfo we want to reinstall. 596f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner MacroInfo *MacroToReInstall = iter->second.back(); 597f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 598e40c4238a572bf8241a04e0005f70550cbfc1cfbAlexander Kornienko if (MacroToReInstall) { 599e40c4238a572bf8241a04e0005f70550cbfc1cfbAlexander Kornienko // Reinstall the previously pushed macro. 600c56fff7fd231aebf4b152f60f8f11ef91835c48aArgyrios Kyrtzidis appendDefMacroDirective(IdentInfo, MacroToReInstall, MessageLoc, 601c56fff7fd231aebf4b152f60f8f11ef91835c48aArgyrios Kyrtzidis /*isImported=*/false); 602e40c4238a572bf8241a04e0005f70550cbfc1cfbAlexander Kornienko } 603f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 604f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Pop PragmaPushMacroInfo stack. 605f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner iter->second.pop_back(); 606f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner if (iter->second.size() == 0) 607f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner PragmaPushMacroInfo.erase(iter); 608f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner } else { 609f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner Diag(MessageLoc, diag::warn_pragma_pop_macro_no_push) 610f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner << IdentInfo->getName(); 611f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner } 612f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner} 6135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6144c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballmanvoid Preprocessor::HandlePragmaIncludeAlias(Token &Tok) { 6154c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman // We will either get a quoted filename or a bracketed filename, and we 6164c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman // have to track which we got. The first filename is the source name, 6174c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman // and the second name is the mapped filename. If the first is quoted, 6184c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman // the second must be as well (cannot mix and match quotes and brackets). 6194c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman 6204c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman // Get the open paren 6214c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman Lex(Tok); 6224c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman if (Tok.isNot(tok::l_paren)) { 6234c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman Diag(Tok, diag::warn_pragma_include_alias_expected) << "("; 6244c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman return; 6254c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman } 6264c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman 6274c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman // We expect either a quoted string literal, or a bracketed name 6284c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman Token SourceFilenameTok; 6294c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman CurPPLexer->LexIncludeFilename(SourceFilenameTok); 6304c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman if (SourceFilenameTok.is(tok::eod)) { 6314c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman // The diagnostic has already been handled 6324c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman return; 6334c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman } 6344c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman 6354c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman StringRef SourceFileName; 6364c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman SmallString<128> FileNameBuffer; 6374c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman if (SourceFilenameTok.is(tok::string_literal) || 6384c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman SourceFilenameTok.is(tok::angle_string_literal)) { 6394c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman SourceFileName = getSpelling(SourceFilenameTok, FileNameBuffer); 6404c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman } else if (SourceFilenameTok.is(tok::less)) { 6414c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman // This could be a path instead of just a name 6424c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman FileNameBuffer.push_back('<'); 6434c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman SourceLocation End; 6444c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman if (ConcatenateIncludeName(FileNameBuffer, End)) 6454c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman return; // Diagnostic already emitted 6464c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman SourceFileName = FileNameBuffer.str(); 6474c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman } else { 6484c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman Diag(Tok, diag::warn_pragma_include_alias_expected_filename); 6494c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman return; 6504c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman } 6514c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman FileNameBuffer.clear(); 6524c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman 6534c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman // Now we expect a comma, followed by another include name 6544c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman Lex(Tok); 6554c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman if (Tok.isNot(tok::comma)) { 6564c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman Diag(Tok, diag::warn_pragma_include_alias_expected) << ","; 6574c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman return; 6584c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman } 6594c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman 6604c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman Token ReplaceFilenameTok; 6614c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman CurPPLexer->LexIncludeFilename(ReplaceFilenameTok); 6624c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman if (ReplaceFilenameTok.is(tok::eod)) { 6634c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman // The diagnostic has already been handled 6644c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman return; 6654c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman } 6664c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman 6674c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman StringRef ReplaceFileName; 6684c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman if (ReplaceFilenameTok.is(tok::string_literal) || 6694c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman ReplaceFilenameTok.is(tok::angle_string_literal)) { 6704c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman ReplaceFileName = getSpelling(ReplaceFilenameTok, FileNameBuffer); 6714c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman } else if (ReplaceFilenameTok.is(tok::less)) { 6724c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman // This could be a path instead of just a name 6734c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman FileNameBuffer.push_back('<'); 6744c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman SourceLocation End; 6754c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman if (ConcatenateIncludeName(FileNameBuffer, End)) 6764c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman return; // Diagnostic already emitted 6774c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman ReplaceFileName = FileNameBuffer.str(); 6784c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman } else { 6794c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman Diag(Tok, diag::warn_pragma_include_alias_expected_filename); 6804c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman return; 6814c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman } 6824c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman 6834c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman // Finally, we expect the closing paren 6844c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman Lex(Tok); 6854c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman if (Tok.isNot(tok::r_paren)) { 6864c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman Diag(Tok, diag::warn_pragma_include_alias_expected) << ")"; 6874c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman return; 6884c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman } 6894c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman 6904c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman // Now that we have the source and target filenames, we need to make sure 6914c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman // they're both of the same type (angled vs non-angled) 6924c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman StringRef OriginalSource = SourceFileName; 6934c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman 6944c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman bool SourceIsAngled = 6954c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman GetIncludeFilenameSpelling(SourceFilenameTok.getLocation(), 6964c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman SourceFileName); 6974c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman bool ReplaceIsAngled = 6984c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman GetIncludeFilenameSpelling(ReplaceFilenameTok.getLocation(), 6994c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman ReplaceFileName); 7004c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman if (!SourceFileName.empty() && !ReplaceFileName.empty() && 7014c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman (SourceIsAngled != ReplaceIsAngled)) { 7024c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman unsigned int DiagID; 7034c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman if (SourceIsAngled) 7044c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman DiagID = diag::warn_pragma_include_alias_mismatch_angle; 7054c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman else 7064c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman DiagID = diag::warn_pragma_include_alias_mismatch_quote; 7074c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman 7084c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman Diag(SourceFilenameTok.getLocation(), DiagID) 7094c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman << SourceFileName 7104c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman << ReplaceFileName; 7114c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman 7124c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman return; 7134c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman } 7144c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman 7154c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman // Now we can let the include handler know about this mapping 7164c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman getHeaderSearchInfo().AddIncludeAlias(OriginalSource, ReplaceFileName); 7174c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman} 7184c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman 7195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// AddPragmaHandler - Add the specified pragma handler to the preprocessor. 7205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// If 'Namespace' is non-null, then it is a token required to exist on the 7215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// pragma line before the pragma string starts, e.g. "STDC" or "GCC". 7225f9e272e632e951b1efe824cd16acb4d96077930Chris Lattnervoid Preprocessor::AddPragmaHandler(StringRef Namespace, 7235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PragmaHandler *Handler) { 7245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PragmaNamespace *InsertNS = PragmaHandlers; 7251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If this is specified to be in a namespace, step down into it. 7279b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis if (!Namespace.empty()) { 7285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If there is already a pragma handler with the name of this namespace, 7295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // we either have an error (directive with the same name as a namespace) or 7305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // we already have the namespace to insert into. 7319b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis if (PragmaHandler *Existing = PragmaHandlers->FindHandler(Namespace)) { 7325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer InsertNS = Existing->getIfNamespace(); 7335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(InsertNS != 0 && "Cannot have a pragma namespace and pragma" 7345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer " handler with the same name!"); 7355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } else { 7365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Otherwise, this namespace doesn't exist yet, create and insert the 7375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // handler for it. 7389b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis InsertNS = new PragmaNamespace(Namespace); 7395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PragmaHandlers->AddPragma(InsertNS); 7405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Check to make sure we don't already have a pragma for this identifier. 7445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(!InsertNS->FindHandler(Handler->getName()) && 7455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer "Pragma handler already exists for this identifier!"); 7465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer InsertNS->AddPragma(Handler); 7475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 7485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7494095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar/// RemovePragmaHandler - Remove the specific pragma handler from the 7504095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar/// preprocessor. If \arg Namespace is non-null, then it should be the 7514095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar/// namespace that \arg Handler was added to. It is an error to remove 7524095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar/// a handler that has not been registered. 7535f9e272e632e951b1efe824cd16acb4d96077930Chris Lattnervoid Preprocessor::RemovePragmaHandler(StringRef Namespace, 7544095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar PragmaHandler *Handler) { 7554095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar PragmaNamespace *NS = PragmaHandlers; 7561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7574095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar // If this is specified to be in a namespace, step down into it. 7589b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis if (!Namespace.empty()) { 7599b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaHandler *Existing = PragmaHandlers->FindHandler(Namespace); 7604095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar assert(Existing && "Namespace containing handler does not exist!"); 7614095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar 7624095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar NS = Existing->getIfNamespace(); 7634095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar assert(NS && "Invalid namespace, registered as a regular pragma handler!"); 7644095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar } 7654095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar 7664095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar NS->RemovePragmaHandler(Handler); 7671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7684095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar // If this is a non-default namespace and it is now empty, remove 7694095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar // it. 770ce52bb3dec520ef94574280ac3ef8ad63f4f1ce2Argyrios Kyrtzidis if (NS != PragmaHandlers && NS->IsEmpty()) { 7714095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar PragmaHandlers->RemovePragmaHandler(NS); 772ce52bb3dec520ef94574280ac3ef8ad63f4f1ce2Argyrios Kyrtzidis delete NS; 773ce52bb3dec520ef94574280ac3ef8ad63f4f1ce2Argyrios Kyrtzidis } 7744095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar} 7754095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar 7769d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbournebool Preprocessor::LexOnOffSwitch(tok::OnOffSwitch &Result) { 7779d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne Token Tok; 7789d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne LexUnexpandedToken(Tok); 7799d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne 7809d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne if (Tok.isNot(tok::identifier)) { 7819d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne Diag(Tok, diag::ext_on_off_switch_syntax); 7829d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne return true; 7839d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne } 7849d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne IdentifierInfo *II = Tok.getIdentifierInfo(); 7859d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne if (II->isStr("ON")) 7869d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne Result = tok::OOS_ON; 7879d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne else if (II->isStr("OFF")) 7889d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne Result = tok::OOS_OFF; 7899d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne else if (II->isStr("DEFAULT")) 7909d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne Result = tok::OOS_DEFAULT; 7919d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne else { 7929d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne Diag(Tok, diag::ext_on_off_switch_syntax); 7939d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne return true; 7949d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne } 7959d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne 79684021556baceb76eedf7d44be8ba71d9b8cfaccePeter Collingbourne // Verify that this is followed by EOD. 7979d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne LexUnexpandedToken(Tok); 79884021556baceb76eedf7d44be8ba71d9b8cfaccePeter Collingbourne if (Tok.isNot(tok::eod)) 79984021556baceb76eedf7d44be8ba71d9b8cfaccePeter Collingbourne Diag(Tok, diag::ext_pragma_syntax_eod); 8009d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne return false; 8019d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne} 8029d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne 8035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencernamespace { 804b6e95b7752893f66e9d067b4287dff2dbf4a5802James Dennett/// PragmaOnceHandler - "\#pragma once" marks the file as atomically included. 8055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerstruct PragmaOnceHandler : public PragmaHandler { 8069b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaOnceHandler() : PragmaHandler("once") {} 80780c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 80880c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &OnceTok) { 80935410d5cbbb18735d76e00496540d416dc49b577Chris Lattner PP.CheckEndOfDirective("pragma once"); 8105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PP.HandlePragmaOnce(OnceTok); 8115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 8125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 8135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 814b6e95b7752893f66e9d067b4287dff2dbf4a5802James Dennett/// PragmaMarkHandler - "\#pragma mark ..." is ignored by the compiler, and the 8152243449253475574fc6f14986ff8f7fce5d46799Chris Lattner/// rest of the line is not lexed. 8162243449253475574fc6f14986ff8f7fce5d46799Chris Lattnerstruct PragmaMarkHandler : public PragmaHandler { 8179b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaMarkHandler() : PragmaHandler("mark") {} 81880c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 81980c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &MarkTok) { 8202243449253475574fc6f14986ff8f7fce5d46799Chris Lattner PP.HandlePragmaMark(); 8212243449253475574fc6f14986ff8f7fce5d46799Chris Lattner } 8222243449253475574fc6f14986ff8f7fce5d46799Chris Lattner}; 8232243449253475574fc6f14986ff8f7fce5d46799Chris Lattner 824b6e95b7752893f66e9d067b4287dff2dbf4a5802James Dennett/// PragmaPoisonHandler - "\#pragma poison x" marks x as not usable. 8255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerstruct PragmaPoisonHandler : public PragmaHandler { 8269b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaPoisonHandler() : PragmaHandler("poison") {} 82780c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 82880c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &PoisonTok) { 8295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PP.HandlePragmaPoison(PoisonTok); 8305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 8315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 8325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 833b6e95b7752893f66e9d067b4287dff2dbf4a5802James Dennett/// PragmaSystemHeaderHandler - "\#pragma system_header" marks the current file 8342243449253475574fc6f14986ff8f7fce5d46799Chris Lattner/// as a system header, which silences warnings in it. 8355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerstruct PragmaSystemHeaderHandler : public PragmaHandler { 8369b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaSystemHeaderHandler() : PragmaHandler("system_header") {} 83780c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 83880c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &SHToken) { 8395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PP.HandlePragmaSystemHeader(SHToken); 84035410d5cbbb18735d76e00496540d416dc49b577Chris Lattner PP.CheckEndOfDirective("pragma"); 8415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 8425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 8435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerstruct PragmaDependencyHandler : public PragmaHandler { 8449b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaDependencyHandler() : PragmaHandler("dependency") {} 84580c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 84680c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &DepToken) { 8475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PP.HandlePragmaDependency(DepToken); 8485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 8495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 8501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 851abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbarstruct PragmaDebugHandler : public PragmaHandler { 852abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar PragmaDebugHandler() : PragmaHandler("__debug") {} 85380c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 85480c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &DepToken) { 855abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar Token Tok; 856abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar PP.LexUnexpandedToken(Tok); 857abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar if (Tok.isNot(tok::identifier)) { 8586493a4d7129673f7878da2382dedf4f9abc57e4cDouglas Gregor PP.Diag(Tok, diag::warn_pragma_diagnostic_invalid); 859abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar return; 860abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar } 861abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar IdentifierInfo *II = Tok.getIdentifierInfo(); 862abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar 8635505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar if (II->isStr("assert")) { 864b219cfc4d75f0a03630b7c4509ef791b7e97b2c8David Blaikie llvm_unreachable("This is an assertion!"); 865abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar } else if (II->isStr("crash")) { 866377da4c6b78c0130fb6141313636c8fda7b60b72David Blaikie LLVM_BUILTIN_TRAP; 867e75d9cfbf41a0ee9e456a665776f91fdd9773b36David Blaikie } else if (II->isStr("parser_crash")) { 868e75d9cfbf41a0ee9e456a665776f91fdd9773b36David Blaikie Token Crasher; 869e75d9cfbf41a0ee9e456a665776f91fdd9773b36David Blaikie Crasher.setKind(tok::annot_pragma_parser_crash); 870e75d9cfbf41a0ee9e456a665776f91fdd9773b36David Blaikie PP.EnterToken(Crasher); 8715505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar } else if (II->isStr("llvm_fatal_error")) { 8725505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar llvm::report_fatal_error("#pragma clang __debug llvm_fatal_error"); 8735505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar } else if (II->isStr("llvm_unreachable")) { 8745505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar llvm_unreachable("#pragma clang __debug llvm_unreachable"); 8755505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar } else if (II->isStr("overflow_stack")) { 8765505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar DebugOverflowStack(); 877ff759a66526d6a985fb4efae69c6b798d83364dfDaniel Dunbar } else if (II->isStr("handle_crash")) { 878ff759a66526d6a985fb4efae69c6b798d83364dfDaniel Dunbar llvm::CrashRecoveryContext *CRC =llvm::CrashRecoveryContext::GetCurrent(); 879ff759a66526d6a985fb4efae69c6b798d83364dfDaniel Dunbar if (CRC) 880ff759a66526d6a985fb4efae69c6b798d83364dfDaniel Dunbar CRC->HandleCrash(); 88185192c7fe187d5486e12dbc6960af28f16a558a0Tareq A. Siraj } else if (II->isStr("captured")) { 88285192c7fe187d5486e12dbc6960af28f16a558a0Tareq A. Siraj HandleCaptured(PP); 8835505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar } else { 8845505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar PP.Diag(Tok, diag::warn_pragma_debug_unexpected_command) 8855505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar << II->getName(); 886abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar } 88785192c7fe187d5486e12dbc6960af28f16a558a0Tareq A. Siraj 88885192c7fe187d5486e12dbc6960af28f16a558a0Tareq A. Siraj PPCallbacks *Callbacks = PP.getPPCallbacks(); 88985192c7fe187d5486e12dbc6960af28f16a558a0Tareq A. Siraj if (Callbacks) 89085192c7fe187d5486e12dbc6960af28f16a558a0Tareq A. Siraj Callbacks->PragmaDebug(Tok.getLocation(), II->getName()); 89185192c7fe187d5486e12dbc6960af28f16a558a0Tareq A. Siraj } 89285192c7fe187d5486e12dbc6960af28f16a558a0Tareq A. Siraj 89385192c7fe187d5486e12dbc6960af28f16a558a0Tareq A. Siraj void HandleCaptured(Preprocessor &PP) { 89485192c7fe187d5486e12dbc6960af28f16a558a0Tareq A. Siraj // Skip if emitting preprocessed output. 89585192c7fe187d5486e12dbc6960af28f16a558a0Tareq A. Siraj if (PP.isPreprocessedOutput()) 89685192c7fe187d5486e12dbc6960af28f16a558a0Tareq A. Siraj return; 89785192c7fe187d5486e12dbc6960af28f16a558a0Tareq A. Siraj 89885192c7fe187d5486e12dbc6960af28f16a558a0Tareq A. Siraj Token Tok; 89985192c7fe187d5486e12dbc6960af28f16a558a0Tareq A. Siraj PP.LexUnexpandedToken(Tok); 90085192c7fe187d5486e12dbc6960af28f16a558a0Tareq A. Siraj 90185192c7fe187d5486e12dbc6960af28f16a558a0Tareq A. Siraj if (Tok.isNot(tok::eod)) { 90285192c7fe187d5486e12dbc6960af28f16a558a0Tareq A. Siraj PP.Diag(Tok, diag::ext_pp_extra_tokens_at_eol) 90385192c7fe187d5486e12dbc6960af28f16a558a0Tareq A. Siraj << "pragma clang __debug captured"; 90485192c7fe187d5486e12dbc6960af28f16a558a0Tareq A. Siraj return; 90585192c7fe187d5486e12dbc6960af28f16a558a0Tareq A. Siraj } 90685192c7fe187d5486e12dbc6960af28f16a558a0Tareq A. Siraj 90785192c7fe187d5486e12dbc6960af28f16a558a0Tareq A. Siraj SourceLocation NameLoc = Tok.getLocation(); 90885192c7fe187d5486e12dbc6960af28f16a558a0Tareq A. Siraj Token *Toks = PP.getPreprocessorAllocator().Allocate<Token>(1); 90985192c7fe187d5486e12dbc6960af28f16a558a0Tareq A. Siraj Toks->startToken(); 91085192c7fe187d5486e12dbc6960af28f16a558a0Tareq A. Siraj Toks->setKind(tok::annot_pragma_captured); 91185192c7fe187d5486e12dbc6960af28f16a558a0Tareq A. Siraj Toks->setLocation(NameLoc); 91285192c7fe187d5486e12dbc6960af28f16a558a0Tareq A. Siraj 91385192c7fe187d5486e12dbc6960af28f16a558a0Tareq A. Siraj PP.EnterTokenStream(Toks, 1, /*DisableMacroExpansion=*/true, 91485192c7fe187d5486e12dbc6960af28f16a558a0Tareq A. Siraj /*OwnsTokens=*/false); 915abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar } 916abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar 9171066c6c7c4d5186c2434b90b054c302564f98080Francois Pichet// Disable MSVC warning about runtime stack overflow. 9181066c6c7c4d5186c2434b90b054c302564f98080Francois Pichet#ifdef _MSC_VER 9191066c6c7c4d5186c2434b90b054c302564f98080Francois Pichet #pragma warning(disable : 4717) 9201066c6c7c4d5186c2434b90b054c302564f98080Francois Pichet#endif 921abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar void DebugOverflowStack() { 922abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar DebugOverflowStack(); 923abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar } 9241066c6c7c4d5186c2434b90b054c302564f98080Francois Pichet#ifdef _MSC_VER 9251066c6c7c4d5186c2434b90b054c302564f98080Francois Pichet #pragma warning(default : 4717) 9261066c6c7c4d5186c2434b90b054c302564f98080Francois Pichet#endif 9271066c6c7c4d5186c2434b90b054c302564f98080Francois Pichet 928abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar}; 929abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar 930b6e95b7752893f66e9d067b4287dff2dbf4a5802James Dennett/// PragmaDiagnosticHandler - e.g. '\#pragma GCC diagnostic ignored "-Wformat"' 931edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattnerstruct PragmaDiagnosticHandler : public PragmaHandler { 932c09ce1224dedc470fce9747e5936ff83cc6762ebDouglas Gregorprivate: 933c09ce1224dedc470fce9747e5936ff83cc6762ebDouglas Gregor const char *Namespace; 93404ae2df026b275aae5dddfc0db5ca55ff4e62179Chris Lattnerpublic: 935c09ce1224dedc470fce9747e5936ff83cc6762ebDouglas Gregor explicit PragmaDiagnosticHandler(const char *NS) : 936c09ce1224dedc470fce9747e5936ff83cc6762ebDouglas Gregor PragmaHandler("diagnostic"), Namespace(NS) {} 93780c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 93880c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &DiagToken) { 9390827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis SourceLocation DiagLoc = DiagToken.getLocation(); 940edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner Token Tok; 941edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner PP.LexUnexpandedToken(Tok); 942edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner if (Tok.isNot(tok::identifier)) { 9436493a4d7129673f7878da2382dedf4f9abc57e4cDouglas Gregor PP.Diag(Tok, diag::warn_pragma_diagnostic_invalid); 944edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner return; 945edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner } 946edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner IdentifierInfo *II = Tok.getIdentifierInfo(); 947c09ce1224dedc470fce9747e5936ff83cc6762ebDouglas Gregor PPCallbacks *Callbacks = PP.getPPCallbacks(); 9481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 949edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner diag::Mapping Map; 950edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner if (II->isStr("warning")) 951edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner Map = diag::MAP_WARNING; 952edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner else if (II->isStr("error")) 953edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner Map = diag::MAP_ERROR; 954edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner else if (II->isStr("ignored")) 955edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner Map = diag::MAP_IGNORE; 956edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner else if (II->isStr("fatal")) 957edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner Map = diag::MAP_FATAL; 9586493a4d7129673f7878da2382dedf4f9abc57e4cDouglas Gregor else if (II->isStr("pop")) { 9590827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis if (!PP.getDiagnostics().popMappings(DiagLoc)) 9606493a4d7129673f7878da2382dedf4f9abc57e4cDouglas Gregor PP.Diag(Tok, diag::warn_pragma_diagnostic_cannot_pop); 961c09ce1224dedc470fce9747e5936ff83cc6762ebDouglas Gregor else if (Callbacks) 962c09ce1224dedc470fce9747e5936ff83cc6762ebDouglas Gregor Callbacks->PragmaDiagnosticPop(DiagLoc, Namespace); 9636493a4d7129673f7878da2382dedf4f9abc57e4cDouglas Gregor return; 9646493a4d7129673f7878da2382dedf4f9abc57e4cDouglas Gregor } else if (II->isStr("push")) { 9650827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis PP.getDiagnostics().pushMappings(DiagLoc); 966c09ce1224dedc470fce9747e5936ff83cc6762ebDouglas Gregor if (Callbacks) 967c09ce1224dedc470fce9747e5936ff83cc6762ebDouglas Gregor Callbacks->PragmaDiagnosticPush(DiagLoc, Namespace); 96804ae2df026b275aae5dddfc0db5ca55ff4e62179Chris Lattner return; 96904ae2df026b275aae5dddfc0db5ca55ff4e62179Chris Lattner } else { 9706493a4d7129673f7878da2382dedf4f9abc57e4cDouglas Gregor PP.Diag(Tok, diag::warn_pragma_diagnostic_invalid); 971edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner return; 972edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner } 9731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 974edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner PP.LexUnexpandedToken(Tok); 97502a176871d91bba3004e4f94b2d4d588ae4b2122Andy Gibbs SourceLocation StringLoc = Tok.getLocation(); 976edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner 97702a176871d91bba3004e4f94b2d4d588ae4b2122Andy Gibbs std::string WarningName; 97897f8461a2c553f68a258612d2322e4281c3f0915Andy Gibbs if (!PP.FinishLexStringLiteral(Tok, WarningName, "pragma diagnostic", 97997f8461a2c553f68a258612d2322e4281c3f0915Andy Gibbs /*MacroExpansion=*/false)) 980edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner return; 9811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 98284021556baceb76eedf7d44be8ba71d9b8cfaccePeter Collingbourne if (Tok.isNot(tok::eod)) { 983edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner PP.Diag(Tok.getLocation(), diag::warn_pragma_diagnostic_invalid_token); 984edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner return; 985edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner } 9861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 987edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner if (WarningName.size() < 3 || WarningName[0] != '-' || 988edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner WarningName[1] != 'W') { 98902a176871d91bba3004e4f94b2d4d588ae4b2122Andy Gibbs PP.Diag(StringLoc, diag::warn_pragma_diagnostic_invalid_option); 990edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner return; 991edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner } 9921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 993477aab6782795e7472055a54108d2df270ce1a89Argyrios Kyrtzidis if (PP.getDiagnostics().setDiagnosticGroupMapping(WarningName.substr(2), 9940827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis Map, DiagLoc)) 99502a176871d91bba3004e4f94b2d4d588ae4b2122Andy Gibbs PP.Diag(StringLoc, diag::warn_pragma_diagnostic_unknown_warning) 99602a176871d91bba3004e4f94b2d4d588ae4b2122Andy Gibbs << WarningName; 997c09ce1224dedc470fce9747e5936ff83cc6762ebDouglas Gregor else if (Callbacks) 998c09ce1224dedc470fce9747e5936ff83cc6762ebDouglas Gregor Callbacks->PragmaDiagnostic(DiagLoc, Namespace, Map, WarningName); 999edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner } 1000edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner}; 10011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1002b6e95b7752893f66e9d067b4287dff2dbf4a5802James Dennett/// PragmaIncludeAliasHandler - "\#pragma include_alias("...")". 10034c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballmanstruct PragmaIncludeAliasHandler : public PragmaHandler { 10044c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman PragmaIncludeAliasHandler() : PragmaHandler("include_alias") {} 10054c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 10064c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman Token &IncludeAliasTok) { 10074c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman PP.HandlePragmaIncludeAlias(IncludeAliasTok); 10084c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman } 10094c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman}; 10104c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman 1011076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs/// PragmaMessageHandler - Handle the microsoft and gcc \#pragma message 1012076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs/// extension. The syntax is: 1013076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs/// \code 1014076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs/// #pragma message(string) 1015076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs/// \endcode 1016076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs/// OR, in GCC mode: 1017076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs/// \code 1018076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs/// #pragma message string 1019076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs/// \endcode 1020076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs/// string is a string, which is fully macro expanded, and permits string 1021076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs/// concatenation, embedded escape characters, etc... See MSDN for more details. 1022076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs/// Also handles \#pragma GCC warning and \#pragma GCC error which take the same 1023076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs/// form as \#pragma message. 1024abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattnerstruct PragmaMessageHandler : public PragmaHandler { 1025076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbsprivate: 1026076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs const PPCallbacks::PragmaMessageKind Kind; 1027076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs const StringRef Namespace; 1028076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs 1029076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs static const char* PragmaKind(PPCallbacks::PragmaMessageKind Kind, 1030076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs bool PragmaNameOnly = false) { 1031076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs switch (Kind) { 1032076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs case PPCallbacks::PMK_Message: 1033076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs return PragmaNameOnly ? "message" : "pragma message"; 1034076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs case PPCallbacks::PMK_Warning: 1035076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs return PragmaNameOnly ? "warning" : "pragma warning"; 1036076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs case PPCallbacks::PMK_Error: 1037076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs return PragmaNameOnly ? "error" : "pragma error"; 1038076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs } 1039076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs llvm_unreachable("Unknown PragmaMessageKind!"); 1040076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs } 1041076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs 1042076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbspublic: 1043076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs PragmaMessageHandler(PPCallbacks::PragmaMessageKind Kind, 1044076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs StringRef Namespace = StringRef()) 1045076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs : PragmaHandler(PragmaKind(Kind, true)), Kind(Kind), Namespace(Namespace) {} 1046076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs 104780c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 1048076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs Token &Tok) { 1049076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs SourceLocation MessageLoc = Tok.getLocation(); 1050076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs PP.Lex(Tok); 1051076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs bool ExpectClosingParen = false; 1052076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs switch (Tok.getKind()) { 1053076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs case tok::l_paren: 1054076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs // We have a MSVC style pragma message. 1055076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs ExpectClosingParen = true; 1056076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs // Read the string. 1057076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs PP.Lex(Tok); 1058076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs break; 1059076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs case tok::string_literal: 1060076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs // We have a GCC style pragma message, and we just read the string. 1061076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs break; 1062076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs default: 1063076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs PP.Diag(MessageLoc, diag::err_pragma_message_malformed) << Kind; 1064076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs return; 1065076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs } 1066076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs 1067076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs std::string MessageString; 1068076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs if (!PP.FinishLexStringLiteral(Tok, MessageString, PragmaKind(Kind), 1069076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs /*MacroExpansion=*/true)) 1070076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs return; 1071076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs 1072076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs if (ExpectClosingParen) { 1073076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs if (Tok.isNot(tok::r_paren)) { 1074076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs PP.Diag(Tok.getLocation(), diag::err_pragma_message_malformed) << Kind; 1075076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs return; 1076076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs } 1077076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs PP.Lex(Tok); // eat the r_paren. 1078076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs } 1079076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs 1080076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs if (Tok.isNot(tok::eod)) { 1081076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs PP.Diag(Tok.getLocation(), diag::err_pragma_message_malformed) << Kind; 1082076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs return; 1083076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs } 1084076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs 1085076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs // Output the message. 1086076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs PP.Diag(MessageLoc, (Kind == PPCallbacks::PMK_Error) 1087076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs ? diag::err_pragma_message 1088076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs : diag::warn_pragma_message) << MessageString; 1089076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs 1090076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs // If the pragma is lexically sound, notify any interested PPCallbacks. 1091076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs if (PPCallbacks *Callbacks = PP.getPPCallbacks()) 1092076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs Callbacks->PragmaMessage(MessageLoc, Namespace, Kind, MessageString); 1093abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner } 1094abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner}; 1095abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner 1096b6e95b7752893f66e9d067b4287dff2dbf4a5802James Dennett/// PragmaPushMacroHandler - "\#pragma push_macro" saves the value of the 1097f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// macro on the top of the stack. 1098f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattnerstruct PragmaPushMacroHandler : public PragmaHandler { 1099f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner PragmaPushMacroHandler() : PragmaHandler("push_macro") {} 110080c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 110180c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &PushMacroTok) { 1102f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner PP.HandlePragmaPushMacro(PushMacroTok); 1103f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner } 1104f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner}; 1105f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 1106f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 1107b6e95b7752893f66e9d067b4287dff2dbf4a5802James Dennett/// PragmaPopMacroHandler - "\#pragma pop_macro" sets the value of the 1108f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// macro to the value on the top of the stack. 1109f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattnerstruct PragmaPopMacroHandler : public PragmaHandler { 1110f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner PragmaPopMacroHandler() : PragmaHandler("pop_macro") {} 111180c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 111280c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &PopMacroTok) { 1113f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner PP.HandlePragmaPopMacro(PopMacroTok); 1114f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner } 1115f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner}; 1116f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 1117062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner// Pragma STDC implementations. 11186c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner 1119b6e95b7752893f66e9d067b4287dff2dbf4a5802James Dennett/// PragmaSTDC_FENV_ACCESSHandler - "\#pragma STDC FENV_ACCESS ...". 1120062f23246510393c19b537b68ec88b6a08ee8996Chris Lattnerstruct PragmaSTDC_FENV_ACCESSHandler : public PragmaHandler { 11219b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaSTDC_FENV_ACCESSHandler() : PragmaHandler("FENV_ACCESS") {} 112280c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 112380c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &Tok) { 11249d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne tok::OnOffSwitch OOS; 11259d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne if (PP.LexOnOffSwitch(OOS)) 11269d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne return; 11279d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne if (OOS == tok::OOS_ON) 11284d8aac3778b40c161bed9964125948ee01c08821Chris Lattner PP.Diag(Tok, diag::warn_stdc_fenv_access_not_supported); 1129062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner } 1130062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner}; 11311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1132b6e95b7752893f66e9d067b4287dff2dbf4a5802James Dennett/// PragmaSTDC_CX_LIMITED_RANGEHandler - "\#pragma STDC CX_LIMITED_RANGE ...". 1133062f23246510393c19b537b68ec88b6a08ee8996Chris Lattnerstruct PragmaSTDC_CX_LIMITED_RANGEHandler : public PragmaHandler { 11349b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaSTDC_CX_LIMITED_RANGEHandler() 11359b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis : PragmaHandler("CX_LIMITED_RANGE") {} 113680c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 113780c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &Tok) { 11389d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne tok::OnOffSwitch OOS; 11399d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne PP.LexOnOffSwitch(OOS); 1140062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner } 1141062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner}; 11421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1143b6e95b7752893f66e9d067b4287dff2dbf4a5802James Dennett/// PragmaSTDC_UnknownHandler - "\#pragma STDC ...". 1144062f23246510393c19b537b68ec88b6a08ee8996Chris Lattnerstruct PragmaSTDC_UnknownHandler : public PragmaHandler { 11459b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaSTDC_UnknownHandler() {} 114680c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 114780c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &UnknownTok) { 11486c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner // C99 6.10.6p2, unknown forms are not allowed. 1149f545be5552b6fd40a4c766fbf82dab0ab5305790Chris Lattner PP.Diag(UnknownTok, diag::ext_stdc_pragma_ignored); 1150062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner } 1151062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner}; 11521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11538dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall/// PragmaARCCFCodeAuditedHandler - 1154b6e95b7752893f66e9d067b4287dff2dbf4a5802James Dennett/// \#pragma clang arc_cf_code_audited begin/end 11558dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCallstruct PragmaARCCFCodeAuditedHandler : public PragmaHandler { 11568dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall PragmaARCCFCodeAuditedHandler() : PragmaHandler("arc_cf_code_audited") {} 11578dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 11588dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall Token &NameTok) { 11598dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall SourceLocation Loc = NameTok.getLocation(); 11608dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall bool IsBegin; 11618dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall 11628dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall Token Tok; 11638dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall 11648dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall // Lex the 'begin' or 'end'. 11658dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall PP.LexUnexpandedToken(Tok); 11668dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall const IdentifierInfo *BeginEnd = Tok.getIdentifierInfo(); 11678dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall if (BeginEnd && BeginEnd->isStr("begin")) { 11688dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall IsBegin = true; 11698dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall } else if (BeginEnd && BeginEnd->isStr("end")) { 11708dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall IsBegin = false; 11718dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall } else { 11728dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall PP.Diag(Tok.getLocation(), diag::err_pp_arc_cf_code_audited_syntax); 11738dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall return; 11748dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall } 11758dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall 11768dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall // Verify that this is followed by EOD. 11778dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall PP.LexUnexpandedToken(Tok); 11788dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall if (Tok.isNot(tok::eod)) 11798dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall PP.Diag(Tok, diag::ext_pp_extra_tokens_at_eol) << "pragma"; 11808dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall 11818dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall // The start location of the active audit. 11828dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall SourceLocation BeginLoc = PP.getPragmaARCCFCodeAuditedLoc(); 11838dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall 11848dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall // The start location we want after processing this. 11858dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall SourceLocation NewLoc; 11868dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall 11878dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall if (IsBegin) { 11888dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall // Complain about attempts to re-enter an audit. 11898dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall if (BeginLoc.isValid()) { 11908dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall PP.Diag(Loc, diag::err_pp_double_begin_of_arc_cf_code_audited); 11918dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall PP.Diag(BeginLoc, diag::note_pragma_entered_here); 11928dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall } 11938dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall NewLoc = Loc; 11948dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall } else { 11958dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall // Complain about attempts to leave an audit that doesn't exist. 11968dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall if (!BeginLoc.isValid()) { 11978dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall PP.Diag(Loc, diag::err_pp_unmatched_end_of_arc_cf_code_audited); 11988dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall return; 11998dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall } 12008dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall NewLoc = SourceLocation(); 12018dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall } 12028dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall 12038dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall PP.setPragmaARCCFCodeAuditedLoc(NewLoc); 12048dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall } 12058dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall}; 12068dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall 1207ad5f8336f96911805bb625cc4fb1a4487745508aDavid Majnemer/// \brief Handle "\#pragma region [...]" 1208ad5f8336f96911805bb625cc4fb1a4487745508aDavid Majnemer/// 1209ad5f8336f96911805bb625cc4fb1a4487745508aDavid Majnemer/// The syntax is 1210ad5f8336f96911805bb625cc4fb1a4487745508aDavid Majnemer/// \code 1211ad5f8336f96911805bb625cc4fb1a4487745508aDavid Majnemer/// #pragma region [optional name] 1212ad5f8336f96911805bb625cc4fb1a4487745508aDavid Majnemer/// #pragma endregion [optional comment] 1213ad5f8336f96911805bb625cc4fb1a4487745508aDavid Majnemer/// \endcode 1214ad5f8336f96911805bb625cc4fb1a4487745508aDavid Majnemer/// 1215ad5f8336f96911805bb625cc4fb1a4487745508aDavid Majnemer/// \note This is 1216ad5f8336f96911805bb625cc4fb1a4487745508aDavid Majnemer/// <a href="http://msdn.microsoft.com/en-us/library/b6xkz944(v=vs.80).aspx">editor-only</a> 1217ad5f8336f96911805bb625cc4fb1a4487745508aDavid Majnemer/// pragma, just skipped by compiler. 1218ad5f8336f96911805bb625cc4fb1a4487745508aDavid Majnemerstruct PragmaRegionHandler : public PragmaHandler { 1219ad5f8336f96911805bb625cc4fb1a4487745508aDavid Majnemer PragmaRegionHandler(const char *pragma) : PragmaHandler(pragma) { } 1220ad5f8336f96911805bb625cc4fb1a4487745508aDavid Majnemer 1221ad5f8336f96911805bb625cc4fb1a4487745508aDavid Majnemer virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 1222ad5f8336f96911805bb625cc4fb1a4487745508aDavid Majnemer Token &NameTok) { 1223ad5f8336f96911805bb625cc4fb1a4487745508aDavid Majnemer // #pragma region: endregion matches can be verified 1224ad5f8336f96911805bb625cc4fb1a4487745508aDavid Majnemer // __pragma(region): no sense, but ignored by msvc 1225ad5f8336f96911805bb625cc4fb1a4487745508aDavid Majnemer // _Pragma is not valid for MSVC, but there isn't any point 1226ad5f8336f96911805bb625cc4fb1a4487745508aDavid Majnemer // to handle a _Pragma differently. 1227ad5f8336f96911805bb625cc4fb1a4487745508aDavid Majnemer } 1228ad5f8336f96911805bb625cc4fb1a4487745508aDavid Majnemer}; 1229fafd101e6b557595ffbb5e9e9b47a3fc0385dc19Aaron Ballman 12305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} // end anonymous namespace 12315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 12325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 12335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// RegisterBuiltinPragmas - Install the standard preprocessor pragmas: 1234b6e95b7752893f66e9d067b4287dff2dbf4a5802James Dennett/// \#pragma GCC poison/system_header/dependency and \#pragma once. 12355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencervoid Preprocessor::RegisterBuiltinPragmas() { 12369b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler(new PragmaOnceHandler()); 12379b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler(new PragmaMarkHandler()); 1238f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner AddPragmaHandler(new PragmaPushMacroHandler()); 1239f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner AddPragmaHandler(new PragmaPopMacroHandler()); 1240076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs AddPragmaHandler(new PragmaMessageHandler(PPCallbacks::PMK_Message)); 12411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1242e8fa06e07363b6d5e6c371bbd454d51bab78d01dChris Lattner // #pragma GCC ... 12439b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler("GCC", new PragmaPoisonHandler()); 12449b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler("GCC", new PragmaSystemHeaderHandler()); 12459b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler("GCC", new PragmaDependencyHandler()); 1246c09ce1224dedc470fce9747e5936ff83cc6762ebDouglas Gregor AddPragmaHandler("GCC", new PragmaDiagnosticHandler("GCC")); 1247076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs AddPragmaHandler("GCC", new PragmaMessageHandler(PPCallbacks::PMK_Warning, 1248076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs "GCC")); 1249076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs AddPragmaHandler("GCC", new PragmaMessageHandler(PPCallbacks::PMK_Error, 1250076eea20b80024fc63bbd71fb019375983680ea6Andy Gibbs "GCC")); 1251e8fa06e07363b6d5e6c371bbd454d51bab78d01dChris Lattner // #pragma clang ... 12529b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler("clang", new PragmaPoisonHandler()); 12539b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler("clang", new PragmaSystemHeaderHandler()); 1254abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar AddPragmaHandler("clang", new PragmaDebugHandler()); 12559b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler("clang", new PragmaDependencyHandler()); 1256c09ce1224dedc470fce9747e5936ff83cc6762ebDouglas Gregor AddPragmaHandler("clang", new PragmaDiagnosticHandler("clang")); 12578dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall AddPragmaHandler("clang", new PragmaARCCFCodeAuditedHandler()); 12589b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis 12599b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler("STDC", new PragmaSTDC_FENV_ACCESSHandler()); 12609b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler("STDC", new PragmaSTDC_CX_LIMITED_RANGEHandler()); 1261062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner AddPragmaHandler("STDC", new PragmaSTDC_UnknownHandler()); 12621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1263636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner // MS extensions. 12644e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (LangOpts.MicrosoftExt) { 12654c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman AddPragmaHandler(new PragmaIncludeAliasHandler()); 1266fafd101e6b557595ffbb5e9e9b47a3fc0385dc19Aaron Ballman AddPragmaHandler(new PragmaRegionHandler("region")); 1267fafd101e6b557595ffbb5e9e9b47a3fc0385dc19Aaron Ballman AddPragmaHandler(new PragmaRegionHandler("endregion")); 1268abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner } 12695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 1270