Pragma.cpp revision 7412494982c8b50c90961302c3a718633b2c3ab7
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" 165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/Lex/HeaderSearch.h" 17a9d9145741ef77db45890911674705b81605b10bChris Lattner#include "clang/Lex/LiteralSupport.h" 185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/Lex/Preprocessor.h" 19f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner#include "clang/Lex/MacroInfo.h" 20500d3297d2a21edeac4d46cbcbe21bc2352c2a28Chris Lattner#include "clang/Lex/LexDiagnostic.h" 215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/Basic/FileManager.h" 225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/Basic/SourceManager.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 Spencer 475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid SpencerPragmaNamespace::~PragmaNamespace() { 489b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis for (llvm::StringMap<PragmaHandler*>::iterator 499b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis I = Handlers.begin(), E = Handlers.end(); I != E; ++I) 509b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis delete I->second; 515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// FindHandler - Check to see if there is already a handler for the 545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// specified name. If not, return the handler for the null identifier if it 555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// exists, otherwise return null. If IgnoreNull is true (the default) then 565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// the null handler isn't returned on failure to match. 579b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios KyrtzidisPragmaHandler *PragmaNamespace::FindHandler(llvm::StringRef Name, 585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool IgnoreNull) const { 599b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis if (PragmaHandler *Handler = Handlers.lookup(Name)) 609b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis return Handler; 619b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis return IgnoreNull ? 0 : Handlers.lookup(llvm::StringRef()); 629b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis} 631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 649b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidisvoid PragmaNamespace::AddPragma(PragmaHandler *Handler) { 659b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis assert(!Handlers.lookup(Handler->getName()) && 669b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis "A handler with this name is already registered in this namespace"); 679b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis llvm::StringMapEntry<PragmaHandler *> &Entry = 689b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis Handlers.GetOrCreateValue(Handler->getName()); 699b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis Entry.setValue(Handler); 705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 724095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbarvoid PragmaNamespace::RemovePragmaHandler(PragmaHandler *Handler) { 739b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis assert(Handlers.lookup(Handler->getName()) && 749b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis "Handler not registered in this namespace"); 759b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis Handlers.erase(Handler->getName()); 764095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar} 774095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar 7880c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregorvoid PragmaNamespace::HandlePragma(Preprocessor &PP, 7980c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor PragmaIntroducerKind Introducer, 8080c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &Tok) { 815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Read the 'namespace' that the directive is in, e.g. STDC. Do not macro 825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // expand it, the user can have a STDC #define, that should not affect this. 835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PP.LexUnexpandedToken(Tok); 841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Get the handler for this token. If there is no handler, ignore the pragma. 869b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaHandler *Handler 879b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis = FindHandler(Tok.getIdentifierInfo() ? Tok.getIdentifierInfo()->getName() 889b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis : llvm::StringRef(), 899b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis /*IgnoreNull=*/false); 90af7cdf45da4925f788e87a4c318ee67404646088Chris Lattner if (Handler == 0) { 91af7cdf45da4925f788e87a4c318ee67404646088Chris Lattner PP.Diag(Tok, diag::warn_pragma_ignored); 92af7cdf45da4925f788e87a4c318ee67404646088Chris Lattner return; 93af7cdf45da4925f788e87a4c318ee67404646088Chris Lattner } 941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Otherwise, pass it down. 9680c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Handler->HandlePragma(PP, Introducer, Tok); 975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 1005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// Preprocessor Pragma Directive Handling. 1015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 1025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// HandlePragmaDirective - The "#pragma" directive has been parsed. Lex the 1045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// rest of the pragma, passing it to the registered pragma handlers. 10580c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregorvoid Preprocessor::HandlePragmaDirective(unsigned Introducer) { 1065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ++NumPragma; 1071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Invoke the first level of pragma handlers which reads the namespace id. 109d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner Token Tok; 11080c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor PragmaHandlers->HandlePragma(*this, PragmaIntroducerKind(Introducer), Tok); 1111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If the pragma handler didn't read the rest of the line, consume it now. 113b2eb53d9fd973a1a02e05e67a3307b3efd12eff2Peter Collingbourne if ((CurTokenLexer && CurTokenLexer->isParsingPreprocessorDirective()) 114b2eb53d9fd973a1a02e05e67a3307b3efd12eff2Peter Collingbourne || (CurPPLexer && CurPPLexer->ParsingPreprocessorDirective)) 1155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DiscardUntilEndOfDirective(); 1165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 1175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// Handle_Pragma - Read a _Pragma directive, slice it up, process it, then 1195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// return the first token after the directive. The _Pragma token has just 1205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// been read into 'Tok'. 121d217773f106856a11879ec79dc468efefaf2ee75Chris Lattnervoid Preprocessor::Handle_Pragma(Token &Tok) { 1225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Remember the pragma token location. 1235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation PragmaLoc = Tok.getLocation(); 1241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Read the '('. 1265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Lex(Tok); 1273692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner if (Tok.isNot(tok::l_paren)) { 1283692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner Diag(PragmaLoc, diag::err__Pragma_malformed); 1293692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner return; 1303692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner } 1315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Read the '"..."'. 1335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Lex(Tok); 1343692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner if (Tok.isNot(tok::string_literal) && Tok.isNot(tok::wide_string_literal)) { 1353692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner Diag(PragmaLoc, diag::err__Pragma_malformed); 1363692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner return; 1373692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner } 1381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Remember the string. 1405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer std::string StrVal = getSpelling(Tok); 1415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Read the ')'. 1435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Lex(Tok); 1443692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner if (Tok.isNot(tok::r_paren)) { 1453692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner Diag(PragmaLoc, diag::err__Pragma_malformed); 1463692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner return; 1473692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner } 1481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 149e7fb48466afcbf2c4ccdfa658824282fdc3c512cChris Lattner SourceLocation RParenLoc = Tok.getLocation(); 1501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 151a9d9145741ef77db45890911674705b81605b10bChris Lattner // The _Pragma is lexically sound. Destringize according to C99 6.10.9.1: 152a9d9145741ef77db45890911674705b81605b10bChris Lattner // "The string literal is destringized by deleting the L prefix, if present, 153a9d9145741ef77db45890911674705b81605b10bChris Lattner // deleting the leading and trailing double-quotes, replacing each escape 154a9d9145741ef77db45890911674705b81605b10bChris Lattner // sequence \" by a double-quote, and replacing each escape sequence \\ by a 155a9d9145741ef77db45890911674705b81605b10bChris Lattner // single backslash." 1565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (StrVal[0] == 'L') // Remove L prefix. 1575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer StrVal.erase(StrVal.begin()); 1585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(StrVal[0] == '"' && StrVal[StrVal.size()-1] == '"' && 1595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer "Invalid string token!"); 1601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Remove the front quote, replacing it with a space, so that the pragma 1625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // contents appear to have a space before them. 1635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer StrVal[0] = ' '; 1641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1651fa495304c81e03f07f278a47b5efe9317104aabChris Lattner // Replace the terminating quote with a \n. 1665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer StrVal[StrVal.size()-1] = '\n'; 1671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Remove escaped quotes and escapes. 1695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer for (unsigned i = 0, e = StrVal.size(); i != e-1; ++i) { 1705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (StrVal[i] == '\\' && 1715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer (StrVal[i+1] == '\\' || StrVal[i+1] == '"')) { 1725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // \\ -> '\' and \" -> '"'. 1735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer StrVal.erase(StrVal.begin()+i); 1745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer --e; 1755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1771ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 178a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne // Plop the string (including the newline and trailing null) into a buffer 179a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne // where we can lex it. 180a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne Token TmpTok; 181a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne TmpTok.startToken(); 182a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne CreateString(&StrVal[0], StrVal.size(), TmpTok); 183a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne SourceLocation TokLoc = TmpTok.getLocation(); 184a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne 185a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne // Make and enter a lexer object so that we lex and expand the tokens just 186a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne // like any others. 187a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne Lexer *TL = Lexer::Create_PragmaLexer(TokLoc, PragmaLoc, RParenLoc, 188a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne StrVal.size(), *this); 189a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne 190a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne EnterSourceFileWithLexer(TL, 0); 191a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne 192a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne // With everything set up, lex this as a #pragma directive. 193a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne HandlePragmaDirective(PIK__Pragma); 1941ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 1951ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall // Finally, return whatever came after the pragma directive. 1961ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall return Lex(Tok); 1971ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall} 1981ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 1991ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall/// HandleMicrosoft__pragma - Like Handle_Pragma except the pragma text 2001ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall/// is not enclosed within a string literal. 2011ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCallvoid Preprocessor::HandleMicrosoft__pragma(Token &Tok) { 2021ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall // Remember the pragma token location. 2031ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall SourceLocation PragmaLoc = Tok.getLocation(); 2041ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 2051ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall // Read the '('. 2061ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall Lex(Tok); 2071ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall if (Tok.isNot(tok::l_paren)) { 2081ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall Diag(PragmaLoc, diag::err__Pragma_malformed); 2091ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall return; 2101ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall } 2111ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 212a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne // Get the tokens enclosed within the __pragma(), as well as the final ')'. 2131ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall llvm::SmallVector<Token, 32> PragmaToks; 2141ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall int NumParens = 0; 2151ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall Lex(Tok); 2161ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall while (Tok.isNot(tok::eof)) { 217a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne PragmaToks.push_back(Tok); 2181ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall if (Tok.is(tok::l_paren)) 2191ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall NumParens++; 2201ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall else if (Tok.is(tok::r_paren) && NumParens-- == 0) 2211ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall break; 2221ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall Lex(Tok); 2231ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall } 2241ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 2253da92a9d21f707c164797dd967ba894b2282b343John McCall if (Tok.is(tok::eof)) { 2263da92a9d21f707c164797dd967ba894b2282b343John McCall Diag(PragmaLoc, diag::err_unterminated___pragma); 2273da92a9d21f707c164797dd967ba894b2282b343John McCall return; 2283da92a9d21f707c164797dd967ba894b2282b343John McCall } 2293da92a9d21f707c164797dd967ba894b2282b343John McCall 230a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne PragmaToks.front().setFlag(Token::LeadingSpace); 2311ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 23284021556baceb76eedf7d44be8ba71d9b8cfaccePeter Collingbourne // Replace the ')' with an EOD to mark the end of the pragma. 23384021556baceb76eedf7d44be8ba71d9b8cfaccePeter Collingbourne PragmaToks.back().setKind(tok::eod); 2341ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 235a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne Token *TokArray = new Token[PragmaToks.size()]; 236a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne std::copy(PragmaToks.begin(), PragmaToks.end(), TokArray); 2371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 238a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne // Push the tokens onto the stack. 239a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne EnterTokenStream(TokArray, PragmaToks.size(), true, true); 2405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // With everything set up, lex this as a #pragma directive. 242a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne HandlePragmaDirective(PIK___pragma); 2435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 244a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne // Finally, return whatever came after the pragma directive. 245a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne return Lex(Tok); 246a5ef584fd3d18da0c98342b4b6453948b7eb30d3Peter Collingbourne} 2475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// HandlePragmaOnce - Handle #pragma once. OnceTok is the 'once'. 2495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 250d217773f106856a11879ec79dc468efefaf2ee75Chris Lattnervoid Preprocessor::HandlePragmaOnce(Token &OnceTok) { 2515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (isInPrimaryFile()) { 2525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(OnceTok, diag::pp_pragma_once_in_main_file); 2535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return; 2545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Get the current file lexer we're looking at. Ignore _Pragma 'files' etc. 2575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Mark the file as a once-only file now. 2582b2453a7d8fe732561795431f39ceb2b2a832d84Chris Lattner HeaderInfo.MarkFileIncludeOnce(getCurrentFileLexer()->getFileEntry()); 2595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 2605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2612243449253475574fc6f14986ff8f7fce5d46799Chris Lattnervoid Preprocessor::HandlePragmaMark() { 26217ff58a63197b398ae52697b088dc0fb8b255519Ted Kremenek assert(CurPPLexer && "No current lexer?"); 2636896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner if (CurLexer) 2646896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner CurLexer->ReadToEndOfLine(); 2656896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner else 2666896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner CurPTHLexer->DiscardToEndOfLine(); 2672243449253475574fc6f14986ff8f7fce5d46799Chris Lattner} 2682243449253475574fc6f14986ff8f7fce5d46799Chris Lattner 2692243449253475574fc6f14986ff8f7fce5d46799Chris Lattner 2705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// HandlePragmaPoison - Handle #pragma GCC poison. PoisonTok is the 'poison'. 2715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 272d217773f106856a11879ec79dc468efefaf2ee75Chris Lattnervoid Preprocessor::HandlePragmaPoison(Token &PoisonTok) { 273d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner Token Tok; 2745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer while (1) { 2765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Read the next token to poison. While doing this, pretend that we are 2775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // skipping while reading the identifier to poison. 2785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // This avoids errors on code like: 2795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // #pragma GCC poison X 2805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // #pragma GCC poison X 28168a91d5736c2c03d60a9d1c59d08191b8e0d6c52Ted Kremenek if (CurPPLexer) CurPPLexer->LexingRawMode = true; 2825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer LexUnexpandedToken(Tok); 28368a91d5736c2c03d60a9d1c59d08191b8e0d6c52Ted Kremenek if (CurPPLexer) CurPPLexer->LexingRawMode = false; 2841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If we reached the end of line, we're done. 28684021556baceb76eedf7d44be8ba71d9b8cfaccePeter Collingbourne if (Tok.is(tok::eod)) return; 2871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Can only poison identifiers. 289c4bf2b9afb7d47445a9dc6bc848657098a4e3851Abramo Bagnara if (Tok.isNot(tok::raw_identifier)) { 2905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(Tok, diag::err_pp_invalid_poison); 2915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return; 2925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Look up the identifier info for the token. We disabled identifier lookup 2955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // by saying we're skipping contents, so we need to do this manually. 2965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierInfo *II = LookUpIdentifierInfo(Tok); 2971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Already poisoned. 2995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (II->isPoisoned()) continue; 3001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If this is a macro identifier, emit a warning. 3020edde55077cc3cb9fffeba19f5936f05a68c8e2bChris Lattner if (II->hasMacroDefinition()) 3035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(Tok, diag::pp_poisoning_existing_macro); 3041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Finally, poison it! 3065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer II->setIsPoisoned(); 3075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 3085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 3095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// HandlePragmaSystemHeader - Implement #pragma GCC system_header. We know 3115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// that the whole directive has been parsed. 312d217773f106856a11879ec79dc468efefaf2ee75Chris Lattnervoid Preprocessor::HandlePragmaSystemHeader(Token &SysHeaderTok) { 3135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (isInPrimaryFile()) { 3145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(SysHeaderTok, diag::pp_pragma_sysheader_in_main_file); 3155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return; 3165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 3171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Get the current file lexer we're looking at. Ignore _Pragma 'files' etc. 31935c10c25ddec4effbd26dead23ea5b04ee32f45aTed Kremenek PreprocessorLexer *TheLexer = getCurrentFileLexer(); 3201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Mark the file as a system header. 3222b2453a7d8fe732561795431f39ceb2b2a832d84Chris Lattner HeaderInfo.MarkFileSystemHeader(TheLexer->getFileEntry()); 3231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3256896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner PresumedLoc PLoc = SourceMgr.getPresumedLoc(SysHeaderTok.getLocation()); 326cb7b1e17b63967317ab5cc55682168cf0380519aDouglas Gregor if (PLoc.isInvalid()) 327cb7b1e17b63967317ab5cc55682168cf0380519aDouglas Gregor return; 328cb7b1e17b63967317ab5cc55682168cf0380519aDouglas Gregor 3296896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner unsigned FilenameLen = strlen(PLoc.getFilename()); 3306896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner unsigned FilenameID = SourceMgr.getLineTableFilenameID(PLoc.getFilename(), 3316896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner FilenameLen); 3321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3336896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner // Emit a line marker. This will change any source locations from this point 3346896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner // forward to realize they are in a system header. 3356896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner // Create a line note with this information. 3366896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner SourceMgr.AddLineNote(SysHeaderTok.getLocation(), PLoc.getLine(), FilenameID, 3376896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner false, false, true, false); 3381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Notify the client, if desired, that we are in a new source file. 3405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (Callbacks) 34135c10c25ddec4effbd26dead23ea5b04ee32f45aTed Kremenek Callbacks->FileChanged(SysHeaderTok.getLocation(), 3420b9e736308af5397f558ffc8e780c438c2fdb563Chris Lattner PPCallbacks::SystemHeaderPragma, SrcMgr::C_System); 3435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 3445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// HandlePragmaDependency - Handle #pragma GCC dependency "foo" blah. 3465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 347d217773f106856a11879ec79dc468efefaf2ee75Chris Lattnervoid Preprocessor::HandlePragmaDependency(Token &DependencyTok) { 348d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner Token FilenameTok; 34968a91d5736c2c03d60a9d1c59d08191b8e0d6c52Ted Kremenek CurPPLexer->LexIncludeFilename(FilenameTok); 3505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 35184021556baceb76eedf7d44be8ba71d9b8cfaccePeter Collingbourne // If the token kind is EOD, the error has already been diagnosed. 35284021556baceb76eedf7d44be8ba71d9b8cfaccePeter Collingbourne if (FilenameTok.is(tok::eod)) 3535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return; 3541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Reserve a buffer to get the spelling. 356a139481e62fdb209d9d87a54a5733f989d2e8d51Chris Lattner llvm::SmallString<128> FilenameBuffer; 357453091cc2082e207ea2c2dda645a9bc01b37fb0cDouglas Gregor bool Invalid = false; 358453091cc2082e207ea2c2dda645a9bc01b37fb0cDouglas Gregor llvm::StringRef Filename = getSpelling(FilenameTok, FilenameBuffer, &Invalid); 359453091cc2082e207ea2c2dda645a9bc01b37fb0cDouglas Gregor if (Invalid) 360453091cc2082e207ea2c2dda645a9bc01b37fb0cDouglas Gregor return; 3611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 362a139481e62fdb209d9d87a54a5733f989d2e8d51Chris Lattner bool isAngled = 363a139481e62fdb209d9d87a54a5733f989d2e8d51Chris Lattner GetIncludeFilenameSpelling(FilenameTok.getLocation(), Filename); 3645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If GetIncludeFilenameSpelling set the start ptr to null, there was an 3655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // error. 366a139481e62fdb209d9d87a54a5733f989d2e8d51Chris Lattner if (Filename.empty()) 3675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return; 3681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Search include directories for this file. 3705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const DirectoryLookup *CurDir; 3717412494982c8b50c90961302c3a718633b2c3ab7Manuel Klimek const FileEntry *File = LookupFile(Filename, isAngled, 0, CurDir, NULL, NULL); 37256b05c8829efd13b7e5b333f8f587c71d025c67dChris Lattner if (File == 0) { 373a139481e62fdb209d9d87a54a5733f989d2e8d51Chris Lattner Diag(FilenameTok, diag::err_pp_file_not_found) << Filename; 37456b05c8829efd13b7e5b333f8f587c71d025c67dChris Lattner return; 37556b05c8829efd13b7e5b333f8f587c71d025c67dChris Lattner } 3761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3772b2453a7d8fe732561795431f39ceb2b2a832d84Chris Lattner const FileEntry *CurFile = getCurrentFileLexer()->getFileEntry(); 3785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If this file is older than the file it depends on, emit a diagnostic. 3805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (CurFile && CurFile->getModificationTime() < File->getModificationTime()) { 3815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Lex tokens at the end of the message and include them in the message. 3825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer std::string Message; 3835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Lex(DependencyTok); 38484021556baceb76eedf7d44be8ba71d9b8cfaccePeter Collingbourne while (DependencyTok.isNot(tok::eod)) { 3855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Message += getSpelling(DependencyTok) + " "; 3865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Lex(DependencyTok); 3875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 3881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 38996de25986d28171945db96a6c6a54f91fd12ae4bChris Lattner // Remove the trailing ' ' if present. 39096de25986d28171945db96a6c6a54f91fd12ae4bChris Lattner if (!Message.empty()) 39196de25986d28171945db96a6c6a54f91fd12ae4bChris Lattner Message.erase(Message.end()-1); 39256b05c8829efd13b7e5b333f8f587c71d025c67dChris Lattner Diag(FilenameTok, diag::pp_out_of_date_dependency) << Message; 3935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 3945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 3955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 396636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner/// HandlePragmaComment - Handle the microsoft #pragma comment extension. The 397636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner/// syntax is: 398636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner/// #pragma comment(linker, "foo") 399636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner/// 'linker' is one of five identifiers: compiler, exestr, lib, linker, user. 400636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner/// "foo" is a string, which is fully macro expanded, and permits string 401d7ee349f1dd84e023d09a35fb4d40c15888a55acGabor Greif/// concatenation, embedded escape characters etc. See MSDN for more details. 402636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattnervoid Preprocessor::HandlePragmaComment(Token &Tok) { 403636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner SourceLocation CommentLoc = Tok.getLocation(); 404636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner Lex(Tok); 405636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner if (Tok.isNot(tok::l_paren)) { 406636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner Diag(CommentLoc, diag::err_pragma_comment_malformed); 407636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner return; 408636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner } 4091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 410636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner // Read the identifier. 411636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner Lex(Tok); 412636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner if (Tok.isNot(tok::identifier)) { 413636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner Diag(CommentLoc, diag::err_pragma_comment_malformed); 414636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner return; 415636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner } 4161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 417636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner // Verify that this is one of the 5 whitelisted options. 418636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner // FIXME: warn that 'exestr' is deprecated. 419636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner const IdentifierInfo *II = Tok.getIdentifierInfo(); 4201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (!II->isStr("compiler") && !II->isStr("exestr") && !II->isStr("lib") && 421636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner !II->isStr("linker") && !II->isStr("user")) { 422636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner Diag(Tok.getLocation(), diag::err_pragma_comment_unknown_kind); 423636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner return; 424636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner } 4251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 426a9d9145741ef77db45890911674705b81605b10bChris Lattner // Read the optional string if present. 427636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner Lex(Tok); 428a9d9145741ef77db45890911674705b81605b10bChris Lattner std::string ArgumentString; 429636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner if (Tok.is(tok::comma)) { 430a9d9145741ef77db45890911674705b81605b10bChris Lattner Lex(Tok); // eat the comma. 431636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner 432636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner // We need at least one string. 433edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner if (Tok.isNot(tok::string_literal)) { 434636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner Diag(Tok.getLocation(), diag::err_pragma_comment_malformed); 435636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner return; 436636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner } 437636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner 438636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner // String concatenation allows multiple strings, which can even come from 439636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner // macro expansion. 440636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner // "foo " "bar" "Baz" 441a9d9145741ef77db45890911674705b81605b10bChris Lattner llvm::SmallVector<Token, 4> StrToks; 442edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner while (Tok.is(tok::string_literal)) { 443a9d9145741ef77db45890911674705b81605b10bChris Lattner StrToks.push_back(Tok); 444636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner Lex(Tok); 445a9d9145741ef77db45890911674705b81605b10bChris Lattner } 446a9d9145741ef77db45890911674705b81605b10bChris Lattner 447a9d9145741ef77db45890911674705b81605b10bChris Lattner // Concatenate and parse the strings. 448a9d9145741ef77db45890911674705b81605b10bChris Lattner StringLiteralParser Literal(&StrToks[0], StrToks.size(), *this); 449a9d9145741ef77db45890911674705b81605b10bChris Lattner assert(!Literal.AnyWide && "Didn't allow wide strings in"); 450a9d9145741ef77db45890911674705b81605b10bChris Lattner if (Literal.hadError) 451a9d9145741ef77db45890911674705b81605b10bChris Lattner return; 452a9d9145741ef77db45890911674705b81605b10bChris Lattner if (Literal.Pascal) { 453a9d9145741ef77db45890911674705b81605b10bChris Lattner Diag(StrToks[0].getLocation(), diag::err_pragma_comment_malformed); 454a9d9145741ef77db45890911674705b81605b10bChris Lattner return; 455a9d9145741ef77db45890911674705b81605b10bChris Lattner } 456a9d9145741ef77db45890911674705b81605b10bChris Lattner 457a9d9145741ef77db45890911674705b81605b10bChris Lattner ArgumentString = std::string(Literal.GetString(), 458a9d9145741ef77db45890911674705b81605b10bChris Lattner Literal.GetString()+Literal.GetStringLength()); 459636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner } 4601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 461a9d9145741ef77db45890911674705b81605b10bChris Lattner // FIXME: If the kind is "compiler" warn if the string is present (it is 462a9d9145741ef77db45890911674705b81605b10bChris Lattner // ignored). 463a9d9145741ef77db45890911674705b81605b10bChris Lattner // FIXME: 'lib' requires a comment string. 464a9d9145741ef77db45890911674705b81605b10bChris Lattner // FIXME: 'linker' requires a comment string, and has a specific list of 465a9d9145741ef77db45890911674705b81605b10bChris Lattner // things that are allowable. 4661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 467636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner if (Tok.isNot(tok::r_paren)) { 468636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner Diag(Tok.getLocation(), diag::err_pragma_comment_malformed); 469636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner return; 470636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner } 471a9d9145741ef77db45890911674705b81605b10bChris Lattner Lex(Tok); // eat the r_paren. 472636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner 47384021556baceb76eedf7d44be8ba71d9b8cfaccePeter Collingbourne if (Tok.isNot(tok::eod)) { 474636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner Diag(Tok.getLocation(), diag::err_pragma_comment_malformed); 475636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner return; 476636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner } 4771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 478a9d9145741ef77db45890911674705b81605b10bChris Lattner // If the pragma is lexically sound, notify any interested PPCallbacks. 479172e336b12fa32a1737f66d77a3f2de86f9cc8e8Chris Lattner if (Callbacks) 480172e336b12fa32a1737f66d77a3f2de86f9cc8e8Chris Lattner Callbacks->PragmaComment(CommentLoc, II, ArgumentString); 481636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner} 482636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner 483301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer/// HandlePragmaMessage - Handle the microsoft and gcc #pragma message 484301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer/// extension. The syntax is: 485301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer/// #pragma message(string) 486301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer/// OR, in GCC mode: 487301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer/// #pragma message string 488301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer/// string is a string, which is fully macro expanded, and permits string 489301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer/// concatenation, embedded escape characters, etc... See MSDN for more details. 490abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattnervoid Preprocessor::HandlePragmaMessage(Token &Tok) { 491abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner SourceLocation MessageLoc = Tok.getLocation(); 492abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner Lex(Tok); 493301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer bool ExpectClosingParen = false; 494d83fc546a4351df49a8d106daaecb959e7278a86Michael J. Spencer switch (Tok.getKind()) { 495301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer case tok::l_paren: 496301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer // We have a MSVC style pragma message. 497301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer ExpectClosingParen = true; 498301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer // Read the string. 499301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer Lex(Tok); 500301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer break; 501301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer case tok::string_literal: 502301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer // We have a GCC style pragma message, and we just read the string. 503301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer break; 504301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer default: 505abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner Diag(MessageLoc, diag::err_pragma_message_malformed); 506abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner return; 507abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner } 508abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner 509abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner // We need at least one string. 510abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner if (Tok.isNot(tok::string_literal)) { 511abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner Diag(Tok.getLocation(), diag::err_pragma_message_malformed); 512abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner return; 513abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner } 514abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner 515abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner // String concatenation allows multiple strings, which can even come from 516abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner // macro expansion. 517abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner // "foo " "bar" "Baz" 518abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner llvm::SmallVector<Token, 4> StrToks; 519abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner while (Tok.is(tok::string_literal)) { 520abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner StrToks.push_back(Tok); 521abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner Lex(Tok); 522abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner } 523abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner 524abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner // Concatenate and parse the strings. 525abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner StringLiteralParser Literal(&StrToks[0], StrToks.size(), *this); 526abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner assert(!Literal.AnyWide && "Didn't allow wide strings in"); 527abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner if (Literal.hadError) 528abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner return; 529abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner if (Literal.Pascal) { 530abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner Diag(StrToks[0].getLocation(), diag::err_pragma_message_malformed); 531abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner return; 532abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner } 533abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner 534abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner llvm::StringRef MessageString(Literal.GetString(), Literal.GetStringLength()); 535636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner 536301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer if (ExpectClosingParen) { 537301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer if (Tok.isNot(tok::r_paren)) { 538301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer Diag(Tok.getLocation(), diag::err_pragma_message_malformed); 539301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer return; 540301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer } 541301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer Lex(Tok); // eat the r_paren. 542abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner } 543abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner 54484021556baceb76eedf7d44be8ba71d9b8cfaccePeter Collingbourne if (Tok.isNot(tok::eod)) { 545abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner Diag(Tok.getLocation(), diag::err_pragma_message_malformed); 546abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner return; 547abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner } 548abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner 549abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner // Output the message. 550abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner Diag(MessageLoc, diag::warn_pragma_message) << MessageString; 551abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner 552abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner // If the pragma is lexically sound, notify any interested PPCallbacks. 553abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner if (Callbacks) 554abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner Callbacks->PragmaMessage(MessageLoc, MessageString); 555abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner} 556636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner 557f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// ParsePragmaPushOrPopMacro - Handle parsing of pragma push_macro/pop_macro. 558f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// Return the IdentifierInfo* associated with the macro to push or pop. 559f47724bf78299c7a50f008e0443c5f9f9f279ddcChris LattnerIdentifierInfo *Preprocessor::ParsePragmaPushOrPopMacro(Token &Tok) { 560f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Remember the pragma token location. 561f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner Token PragmaTok = Tok; 562f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 563f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Read the '('. 564f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner Lex(Tok); 565f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner if (Tok.isNot(tok::l_paren)) { 566f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner Diag(PragmaTok.getLocation(), diag::err_pragma_push_pop_macro_malformed) 567f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner << getSpelling(PragmaTok); 568f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner return 0; 569f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner } 570f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 571f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Read the macro name string. 572f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner Lex(Tok); 573f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner if (Tok.isNot(tok::string_literal)) { 574f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner Diag(PragmaTok.getLocation(), diag::err_pragma_push_pop_macro_malformed) 575f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner << getSpelling(PragmaTok); 576f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner return 0; 577f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner } 578f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 579f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Remember the macro string. 580f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner std::string StrVal = getSpelling(Tok); 581f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 582f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Read the ')'. 583f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner Lex(Tok); 584f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner if (Tok.isNot(tok::r_paren)) { 585f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner Diag(PragmaTok.getLocation(), diag::err_pragma_push_pop_macro_malformed) 586f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner << getSpelling(PragmaTok); 587f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner return 0; 588f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner } 589f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 590f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner assert(StrVal[0] == '"' && StrVal[StrVal.size()-1] == '"' && 591f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner "Invalid string token!"); 592f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 593f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Create a Token from the string. 594f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner Token MacroTok; 595f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner MacroTok.startToken(); 596c4bf2b9afb7d47445a9dc6bc848657098a4e3851Abramo Bagnara MacroTok.setKind(tok::raw_identifier); 597f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner CreateString(&StrVal[1], StrVal.size() - 2, MacroTok); 598f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 599f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Get the IdentifierInfo of MacroToPushTok. 600f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner return LookUpIdentifierInfo(MacroTok); 601f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner} 602f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 603f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// HandlePragmaPushMacro - Handle #pragma push_macro. 604f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// The syntax is: 605f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// #pragma push_macro("macro") 606f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattnervoid Preprocessor::HandlePragmaPushMacro(Token &PushMacroTok) { 607f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Parse the pragma directive and get the macro IdentifierInfo*. 608f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner IdentifierInfo *IdentInfo = ParsePragmaPushOrPopMacro(PushMacroTok); 609f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner if (!IdentInfo) return; 610f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 611f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Get the MacroInfo associated with IdentInfo. 612f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner MacroInfo *MI = getMacroInfo(IdentInfo); 613f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 614f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner MacroInfo *MacroCopyToPush = 0; 615f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner if (MI) { 616f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Make a clone of MI. 617f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner MacroCopyToPush = CloneMacroInfo(*MI); 618f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 619f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Allow the original MacroInfo to be redefined later. 620f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner MI->setIsAllowRedefinitionsWithoutWarning(true); 621f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner } 622f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 623f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Push the cloned MacroInfo so we can retrieve it later. 624f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner PragmaPushMacroInfo[IdentInfo].push_back(MacroCopyToPush); 625f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner} 626f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 627b275e3d4069fcc189b33e75a0611a6abd1efd28fTed Kremenek/// HandlePragmaPopMacro - Handle #pragma pop_macro. 628f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// The syntax is: 629f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// #pragma pop_macro("macro") 630f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattnervoid Preprocessor::HandlePragmaPopMacro(Token &PopMacroTok) { 631f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner SourceLocation MessageLoc = PopMacroTok.getLocation(); 632f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 633f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Parse the pragma directive and get the macro IdentifierInfo*. 634f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner IdentifierInfo *IdentInfo = ParsePragmaPushOrPopMacro(PopMacroTok); 635f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner if (!IdentInfo) return; 636f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 637f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Find the vector<MacroInfo*> associated with the macro. 638f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner llvm::DenseMap<IdentifierInfo*, std::vector<MacroInfo*> >::iterator iter = 639f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner PragmaPushMacroInfo.find(IdentInfo); 640f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner if (iter != PragmaPushMacroInfo.end()) { 641f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Release the MacroInfo currently associated with IdentInfo. 642f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner MacroInfo *CurrentMI = getMacroInfo(IdentInfo); 6430827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis if (CurrentMI) { 6440827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis if (CurrentMI->isWarnIfUnused()) 6450827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis WarnUnusedMacroLocs.erase(CurrentMI->getDefinitionLoc()); 6460827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis ReleaseMacroInfo(CurrentMI); 6470827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis } 648f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 649f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Get the MacroInfo we want to reinstall. 650f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner MacroInfo *MacroToReInstall = iter->second.back(); 651f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 652f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Reinstall the previously pushed macro. 653f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner setMacroInfo(IdentInfo, MacroToReInstall); 654f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 655f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Pop PragmaPushMacroInfo stack. 656f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner iter->second.pop_back(); 657f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner if (iter->second.size() == 0) 658f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner PragmaPushMacroInfo.erase(iter); 659f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner } else { 660f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner Diag(MessageLoc, diag::warn_pragma_pop_macro_no_push) 661f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner << IdentInfo->getName(); 662f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner } 663f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner} 6645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// AddPragmaHandler - Add the specified pragma handler to the preprocessor. 6665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// If 'Namespace' is non-null, then it is a token required to exist on the 6675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// pragma line before the pragma string starts, e.g. "STDC" or "GCC". 6689b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidisvoid Preprocessor::AddPragmaHandler(llvm::StringRef Namespace, 6695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PragmaHandler *Handler) { 6705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PragmaNamespace *InsertNS = PragmaHandlers; 6711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If this is specified to be in a namespace, step down into it. 6739b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis if (!Namespace.empty()) { 6745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If there is already a pragma handler with the name of this namespace, 6755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // we either have an error (directive with the same name as a namespace) or 6765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // we already have the namespace to insert into. 6779b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis if (PragmaHandler *Existing = PragmaHandlers->FindHandler(Namespace)) { 6785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer InsertNS = Existing->getIfNamespace(); 6795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(InsertNS != 0 && "Cannot have a pragma namespace and pragma" 6805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer " handler with the same name!"); 6815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } else { 6825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Otherwise, this namespace doesn't exist yet, create and insert the 6835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // handler for it. 6849b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis InsertNS = new PragmaNamespace(Namespace); 6855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PragmaHandlers->AddPragma(InsertNS); 6865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 6875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 6881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Check to make sure we don't already have a pragma for this identifier. 6905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(!InsertNS->FindHandler(Handler->getName()) && 6915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer "Pragma handler already exists for this identifier!"); 6925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer InsertNS->AddPragma(Handler); 6935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 6945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6954095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar/// RemovePragmaHandler - Remove the specific pragma handler from the 6964095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar/// preprocessor. If \arg Namespace is non-null, then it should be the 6974095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar/// namespace that \arg Handler was added to. It is an error to remove 6984095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar/// a handler that has not been registered. 6999b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidisvoid Preprocessor::RemovePragmaHandler(llvm::StringRef Namespace, 7004095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar PragmaHandler *Handler) { 7014095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar PragmaNamespace *NS = PragmaHandlers; 7021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7034095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar // If this is specified to be in a namespace, step down into it. 7049b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis if (!Namespace.empty()) { 7059b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaHandler *Existing = PragmaHandlers->FindHandler(Namespace); 7064095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar assert(Existing && "Namespace containing handler does not exist!"); 7074095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar 7084095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar NS = Existing->getIfNamespace(); 7094095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar assert(NS && "Invalid namespace, registered as a regular pragma handler!"); 7104095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar } 7114095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar 7124095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar NS->RemovePragmaHandler(Handler); 7131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7144095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar // If this is a non-default namespace and it is now empty, remove 7154095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar // it. 7164095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar if (NS != PragmaHandlers && NS->IsEmpty()) 7174095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar PragmaHandlers->RemovePragmaHandler(NS); 7184095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar} 7194095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar 7209d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbournebool Preprocessor::LexOnOffSwitch(tok::OnOffSwitch &Result) { 7219d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne Token Tok; 7229d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne LexUnexpandedToken(Tok); 7239d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne 7249d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne if (Tok.isNot(tok::identifier)) { 7259d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne Diag(Tok, diag::ext_on_off_switch_syntax); 7269d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne return true; 7279d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne } 7289d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne IdentifierInfo *II = Tok.getIdentifierInfo(); 7299d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne if (II->isStr("ON")) 7309d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne Result = tok::OOS_ON; 7319d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne else if (II->isStr("OFF")) 7329d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne Result = tok::OOS_OFF; 7339d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne else if (II->isStr("DEFAULT")) 7349d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne Result = tok::OOS_DEFAULT; 7359d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne else { 7369d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne Diag(Tok, diag::ext_on_off_switch_syntax); 7379d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne return true; 7389d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne } 7399d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne 74084021556baceb76eedf7d44be8ba71d9b8cfaccePeter Collingbourne // Verify that this is followed by EOD. 7419d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne LexUnexpandedToken(Tok); 74284021556baceb76eedf7d44be8ba71d9b8cfaccePeter Collingbourne if (Tok.isNot(tok::eod)) 74384021556baceb76eedf7d44be8ba71d9b8cfaccePeter Collingbourne Diag(Tok, diag::ext_pragma_syntax_eod); 7449d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne return false; 7459d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne} 7469d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne 7475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencernamespace { 7482243449253475574fc6f14986ff8f7fce5d46799Chris Lattner/// PragmaOnceHandler - "#pragma once" marks the file as atomically included. 7495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerstruct PragmaOnceHandler : public PragmaHandler { 7509b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaOnceHandler() : PragmaHandler("once") {} 75180c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 75280c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &OnceTok) { 75335410d5cbbb18735d76e00496540d416dc49b577Chris Lattner PP.CheckEndOfDirective("pragma once"); 7545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PP.HandlePragmaOnce(OnceTok); 7555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 7575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7582243449253475574fc6f14986ff8f7fce5d46799Chris Lattner/// PragmaMarkHandler - "#pragma mark ..." is ignored by the compiler, and the 7592243449253475574fc6f14986ff8f7fce5d46799Chris Lattner/// rest of the line is not lexed. 7602243449253475574fc6f14986ff8f7fce5d46799Chris Lattnerstruct PragmaMarkHandler : public PragmaHandler { 7619b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaMarkHandler() : PragmaHandler("mark") {} 76280c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 76380c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &MarkTok) { 7642243449253475574fc6f14986ff8f7fce5d46799Chris Lattner PP.HandlePragmaMark(); 7652243449253475574fc6f14986ff8f7fce5d46799Chris Lattner } 7662243449253475574fc6f14986ff8f7fce5d46799Chris Lattner}; 7672243449253475574fc6f14986ff8f7fce5d46799Chris Lattner 7682243449253475574fc6f14986ff8f7fce5d46799Chris Lattner/// PragmaPoisonHandler - "#pragma poison x" marks x as not usable. 7695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerstruct PragmaPoisonHandler : public PragmaHandler { 7709b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaPoisonHandler() : PragmaHandler("poison") {} 77180c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 77280c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &PoisonTok) { 7735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PP.HandlePragmaPoison(PoisonTok); 7745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 7765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7772243449253475574fc6f14986ff8f7fce5d46799Chris Lattner/// PragmaSystemHeaderHandler - "#pragma system_header" marks the current file 7782243449253475574fc6f14986ff8f7fce5d46799Chris Lattner/// as a system header, which silences warnings in it. 7795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerstruct PragmaSystemHeaderHandler : public PragmaHandler { 7809b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaSystemHeaderHandler() : PragmaHandler("system_header") {} 78180c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 78280c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &SHToken) { 7835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PP.HandlePragmaSystemHeader(SHToken); 78435410d5cbbb18735d76e00496540d416dc49b577Chris Lattner PP.CheckEndOfDirective("pragma"); 7855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 7875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerstruct PragmaDependencyHandler : public PragmaHandler { 7889b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaDependencyHandler() : PragmaHandler("dependency") {} 78980c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 79080c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &DepToken) { 7915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PP.HandlePragmaDependency(DepToken); 7925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 7941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 795abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbarstruct PragmaDebugHandler : public PragmaHandler { 796abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar PragmaDebugHandler() : PragmaHandler("__debug") {} 79780c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 79880c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &DepToken) { 799abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar Token Tok; 800abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar PP.LexUnexpandedToken(Tok); 801abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar if (Tok.isNot(tok::identifier)) { 8026493a4d7129673f7878da2382dedf4f9abc57e4cDouglas Gregor PP.Diag(Tok, diag::warn_pragma_diagnostic_invalid); 803abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar return; 804abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar } 805abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar IdentifierInfo *II = Tok.getIdentifierInfo(); 806abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar 8075505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar if (II->isStr("assert")) { 8085505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar assert(0 && "This is an assertion!"); 809abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar } else if (II->isStr("crash")) { 8105505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar *(volatile int*) 0x11 = 0; 8115505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar } else if (II->isStr("llvm_fatal_error")) { 8125505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar llvm::report_fatal_error("#pragma clang __debug llvm_fatal_error"); 8135505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar } else if (II->isStr("llvm_unreachable")) { 8145505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar llvm_unreachable("#pragma clang __debug llvm_unreachable"); 8155505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar } else if (II->isStr("overflow_stack")) { 8165505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar DebugOverflowStack(); 817ff759a66526d6a985fb4efae69c6b798d83364dfDaniel Dunbar } else if (II->isStr("handle_crash")) { 818ff759a66526d6a985fb4efae69c6b798d83364dfDaniel Dunbar llvm::CrashRecoveryContext *CRC =llvm::CrashRecoveryContext::GetCurrent(); 819ff759a66526d6a985fb4efae69c6b798d83364dfDaniel Dunbar if (CRC) 820ff759a66526d6a985fb4efae69c6b798d83364dfDaniel Dunbar CRC->HandleCrash(); 8215505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar } else { 8225505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar PP.Diag(Tok, diag::warn_pragma_debug_unexpected_command) 8235505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar << II->getName(); 824abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar } 825abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar } 826abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar 827abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar void DebugOverflowStack() { 828abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar DebugOverflowStack(); 829abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar } 830abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar}; 831abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar 832edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner/// PragmaDiagnosticHandler - e.g. '#pragma GCC diagnostic ignored "-Wformat"' 833edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattnerstruct PragmaDiagnosticHandler : public PragmaHandler { 83404ae2df026b275aae5dddfc0db5ca55ff4e62179Chris Lattnerpublic: 8356493a4d7129673f7878da2382dedf4f9abc57e4cDouglas Gregor explicit PragmaDiagnosticHandler() : PragmaHandler("diagnostic") {} 83680c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 83780c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &DiagToken) { 8380827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis SourceLocation DiagLoc = DiagToken.getLocation(); 839edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner Token Tok; 840edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner PP.LexUnexpandedToken(Tok); 841edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner if (Tok.isNot(tok::identifier)) { 8426493a4d7129673f7878da2382dedf4f9abc57e4cDouglas Gregor PP.Diag(Tok, diag::warn_pragma_diagnostic_invalid); 843edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner return; 844edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner } 845edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner IdentifierInfo *II = Tok.getIdentifierInfo(); 8461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 847edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner diag::Mapping Map; 848edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner if (II->isStr("warning")) 849edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner Map = diag::MAP_WARNING; 850edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner else if (II->isStr("error")) 851edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner Map = diag::MAP_ERROR; 852edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner else if (II->isStr("ignored")) 853edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner Map = diag::MAP_IGNORE; 854edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner else if (II->isStr("fatal")) 855edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner Map = diag::MAP_FATAL; 8566493a4d7129673f7878da2382dedf4f9abc57e4cDouglas Gregor else if (II->isStr("pop")) { 8570827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis if (!PP.getDiagnostics().popMappings(DiagLoc)) 8586493a4d7129673f7878da2382dedf4f9abc57e4cDouglas Gregor PP.Diag(Tok, diag::warn_pragma_diagnostic_cannot_pop); 8596493a4d7129673f7878da2382dedf4f9abc57e4cDouglas Gregor 8606493a4d7129673f7878da2382dedf4f9abc57e4cDouglas Gregor return; 8616493a4d7129673f7878da2382dedf4f9abc57e4cDouglas Gregor } else if (II->isStr("push")) { 8620827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis PP.getDiagnostics().pushMappings(DiagLoc); 86304ae2df026b275aae5dddfc0db5ca55ff4e62179Chris Lattner return; 86404ae2df026b275aae5dddfc0db5ca55ff4e62179Chris Lattner } else { 8656493a4d7129673f7878da2382dedf4f9abc57e4cDouglas Gregor PP.Diag(Tok, diag::warn_pragma_diagnostic_invalid); 866edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner return; 867edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner } 8681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 869edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner PP.LexUnexpandedToken(Tok); 870edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner 871edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner // We need at least one string. 872edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner if (Tok.isNot(tok::string_literal)) { 873edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner PP.Diag(Tok.getLocation(), diag::warn_pragma_diagnostic_invalid_token); 874edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner return; 875edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner } 8761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 877edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner // String concatenation allows multiple strings, which can even come from 878edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner // macro expansion. 879edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner // "foo " "bar" "Baz" 880edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner llvm::SmallVector<Token, 4> StrToks; 881edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner while (Tok.is(tok::string_literal)) { 882edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner StrToks.push_back(Tok); 883edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner PP.LexUnexpandedToken(Tok); 884edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner } 8851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 88684021556baceb76eedf7d44be8ba71d9b8cfaccePeter Collingbourne if (Tok.isNot(tok::eod)) { 887edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner PP.Diag(Tok.getLocation(), diag::warn_pragma_diagnostic_invalid_token); 888edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner return; 889edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner } 8901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 891edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner // Concatenate and parse the strings. 892edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner StringLiteralParser Literal(&StrToks[0], StrToks.size(), PP); 893edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner assert(!Literal.AnyWide && "Didn't allow wide strings in"); 894edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner if (Literal.hadError) 895edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner return; 896edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner if (Literal.Pascal) { 8976493a4d7129673f7878da2382dedf4f9abc57e4cDouglas Gregor PP.Diag(Tok, diag::warn_pragma_diagnostic_invalid); 898edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner return; 899edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner } 90004ae2df026b275aae5dddfc0db5ca55ff4e62179Chris Lattner 901edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner std::string WarningName(Literal.GetString(), 902edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner Literal.GetString()+Literal.GetStringLength()); 903edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner 904edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner if (WarningName.size() < 3 || WarningName[0] != '-' || 905edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner WarningName[1] != 'W') { 906edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner PP.Diag(StrToks[0].getLocation(), 907edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner diag::warn_pragma_diagnostic_invalid_option); 908edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner return; 909edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner } 9101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 911edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner if (PP.getDiagnostics().setDiagnosticGroupMapping(WarningName.c_str()+2, 9120827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis Map, DiagLoc)) 913edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner PP.Diag(StrToks[0].getLocation(), 914edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner diag::warn_pragma_diagnostic_unknown_warning) << WarningName; 915edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner } 916edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner}; 9171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 918636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner/// PragmaCommentHandler - "#pragma comment ...". 919636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattnerstruct PragmaCommentHandler : public PragmaHandler { 9209b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaCommentHandler() : PragmaHandler("comment") {} 92180c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 92280c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &CommentTok) { 923636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner PP.HandlePragmaComment(CommentTok); 924636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner } 925636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner}; 9261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 927abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner/// PragmaMessageHandler - "#pragma message("...")". 928abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattnerstruct PragmaMessageHandler : public PragmaHandler { 9299b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaMessageHandler() : PragmaHandler("message") {} 93080c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 93180c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &CommentTok) { 932abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner PP.HandlePragmaMessage(CommentTok); 933abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner } 934abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner}; 935abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner 936f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// PragmaPushMacroHandler - "#pragma push_macro" saves the value of the 937f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// macro on the top of the stack. 938f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattnerstruct PragmaPushMacroHandler : public PragmaHandler { 939f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner PragmaPushMacroHandler() : PragmaHandler("push_macro") {} 94080c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 94180c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &PushMacroTok) { 942f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner PP.HandlePragmaPushMacro(PushMacroTok); 943f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner } 944f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner}; 945f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 946f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 947f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// PragmaPopMacroHandler - "#pragma pop_macro" sets the value of the 948f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// macro to the value on the top of the stack. 949f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattnerstruct PragmaPopMacroHandler : public PragmaHandler { 950f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner PragmaPopMacroHandler() : PragmaHandler("pop_macro") {} 95180c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 95280c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &PopMacroTok) { 953f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner PP.HandlePragmaPopMacro(PopMacroTok); 954f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner } 955f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner}; 956f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 957062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner// Pragma STDC implementations. 9586c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner 959062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner/// PragmaSTDC_FENV_ACCESSHandler - "#pragma STDC FENV_ACCESS ...". 960062f23246510393c19b537b68ec88b6a08ee8996Chris Lattnerstruct PragmaSTDC_FENV_ACCESSHandler : public PragmaHandler { 9619b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaSTDC_FENV_ACCESSHandler() : PragmaHandler("FENV_ACCESS") {} 96280c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 96380c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &Tok) { 9649d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne tok::OnOffSwitch OOS; 9659d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne if (PP.LexOnOffSwitch(OOS)) 9669d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne return; 9679d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne if (OOS == tok::OOS_ON) 9684d8aac3778b40c161bed9964125948ee01c08821Chris Lattner PP.Diag(Tok, diag::warn_stdc_fenv_access_not_supported); 969062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner } 970062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner}; 9711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 972062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner/// PragmaSTDC_CX_LIMITED_RANGEHandler - "#pragma STDC CX_LIMITED_RANGE ...". 973062f23246510393c19b537b68ec88b6a08ee8996Chris Lattnerstruct PragmaSTDC_CX_LIMITED_RANGEHandler : public PragmaHandler { 9749b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaSTDC_CX_LIMITED_RANGEHandler() 9759b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis : PragmaHandler("CX_LIMITED_RANGE") {} 97680c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 97780c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &Tok) { 9789d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne tok::OnOffSwitch OOS; 9799d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne PP.LexOnOffSwitch(OOS); 980062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner } 981062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner}; 9821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 983062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner/// PragmaSTDC_UnknownHandler - "#pragma STDC ...". 984062f23246510393c19b537b68ec88b6a08ee8996Chris Lattnerstruct PragmaSTDC_UnknownHandler : public PragmaHandler { 9859b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaSTDC_UnknownHandler() {} 98680c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 98780c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &UnknownTok) { 9886c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner // C99 6.10.6p2, unknown forms are not allowed. 989f545be5552b6fd40a4c766fbf82dab0ab5305790Chris Lattner PP.Diag(UnknownTok, diag::ext_stdc_pragma_ignored); 990062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner } 991062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner}; 9921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} // end anonymous namespace 9945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 9955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 9965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// RegisterBuiltinPragmas - Install the standard preprocessor pragmas: 9975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// #pragma GCC poison/system_header/dependency and #pragma once. 9985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencervoid Preprocessor::RegisterBuiltinPragmas() { 9999b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler(new PragmaOnceHandler()); 10009b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler(new PragmaMarkHandler()); 1001f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner AddPragmaHandler(new PragmaPushMacroHandler()); 1002f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner AddPragmaHandler(new PragmaPopMacroHandler()); 1003301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer AddPragmaHandler(new PragmaMessageHandler()); 10041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1005e8fa06e07363b6d5e6c371bbd454d51bab78d01dChris Lattner // #pragma GCC ... 10069b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler("GCC", new PragmaPoisonHandler()); 10079b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler("GCC", new PragmaSystemHeaderHandler()); 10089b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler("GCC", new PragmaDependencyHandler()); 10096493a4d7129673f7878da2382dedf4f9abc57e4cDouglas Gregor AddPragmaHandler("GCC", new PragmaDiagnosticHandler()); 1010e8fa06e07363b6d5e6c371bbd454d51bab78d01dChris Lattner // #pragma clang ... 10119b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler("clang", new PragmaPoisonHandler()); 10129b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler("clang", new PragmaSystemHeaderHandler()); 1013abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar AddPragmaHandler("clang", new PragmaDebugHandler()); 10149b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler("clang", new PragmaDependencyHandler()); 10156493a4d7129673f7878da2382dedf4f9abc57e4cDouglas Gregor AddPragmaHandler("clang", new PragmaDiagnosticHandler()); 10169b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis 10179b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler("STDC", new PragmaSTDC_FENV_ACCESSHandler()); 10189b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler("STDC", new PragmaSTDC_CX_LIMITED_RANGEHandler()); 1019062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner AddPragmaHandler("STDC", new PragmaSTDC_UnknownHandler()); 10201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1021636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner // MS extensions. 1022abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner if (Features.Microsoft) { 10239b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler(new PragmaCommentHandler()); 1024abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner } 10255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 1026