Pragma.cpp revision b2eb53d9fd973a1a02e05e67a3307b3efd12eff2
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 17880c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Handle_Pragma(PIK__Pragma, StrVal, PragmaLoc, RParenLoc); 1791ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 1801ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall // Finally, return whatever came after the pragma directive. 1811ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall return Lex(Tok); 1821ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall} 1831ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 1841ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall/// HandleMicrosoft__pragma - Like Handle_Pragma except the pragma text 1851ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall/// is not enclosed within a string literal. 1861ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCallvoid Preprocessor::HandleMicrosoft__pragma(Token &Tok) { 1871ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall // Remember the pragma token location. 1881ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall SourceLocation PragmaLoc = Tok.getLocation(); 1891ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 1901ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall // Read the '('. 1911ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall Lex(Tok); 1921ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall if (Tok.isNot(tok::l_paren)) { 1931ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall Diag(PragmaLoc, diag::err__Pragma_malformed); 1941ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall return; 1951ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall } 1961ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 1971ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall // Get the tokens enclosed within the __pragma(). 1981ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall llvm::SmallVector<Token, 32> PragmaToks; 1991ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall int NumParens = 0; 2001ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall Lex(Tok); 2011ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall while (Tok.isNot(tok::eof)) { 2021ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall if (Tok.is(tok::l_paren)) 2031ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall NumParens++; 2041ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall else if (Tok.is(tok::r_paren) && NumParens-- == 0) 2051ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall break; 2061ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall PragmaToks.push_back(Tok); 2071ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall Lex(Tok); 2081ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall } 2091ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 2103da92a9d21f707c164797dd967ba894b2282b343John McCall if (Tok.is(tok::eof)) { 2113da92a9d21f707c164797dd967ba894b2282b343John McCall Diag(PragmaLoc, diag::err_unterminated___pragma); 2123da92a9d21f707c164797dd967ba894b2282b343John McCall return; 2133da92a9d21f707c164797dd967ba894b2282b343John McCall } 2143da92a9d21f707c164797dd967ba894b2282b343John McCall 2151ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall // Build the pragma string. 2161ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall std::string StrVal = " "; 2171ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall for (llvm::SmallVector<Token, 32>::iterator I = 2181ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall PragmaToks.begin(), E = PragmaToks.end(); I != E; ++I) { 2191ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall StrVal += getSpelling(*I); 2201ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall } 2211ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 2221ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall SourceLocation RParenLoc = Tok.getLocation(); 2231ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 22480c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Handle_Pragma(PIK___pragma, StrVal, PragmaLoc, RParenLoc); 2251ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 2261ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall // Finally, return whatever came after the pragma directive. 2271ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall return Lex(Tok); 2281ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall} 2291ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 23080c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregorvoid Preprocessor::Handle_Pragma(unsigned Introducer, 23180c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor const std::string &StrVal, 2321ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall SourceLocation PragmaLoc, 2331ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall SourceLocation RParenLoc) { 2341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Plop the string (including the newline and trailing null) into a buffer 2365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // where we can lex it. 23747246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner Token TmpTok; 23847246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner TmpTok.startToken(); 23947246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner CreateString(&StrVal[0], StrVal.size(), TmpTok); 24047246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner SourceLocation TokLoc = TmpTok.getLocation(); 2415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Make and enter a lexer object so that we lex and expand the tokens just 2435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // like any others. 244e7fb48466afcbf2c4ccdfa658824282fdc3c512cChris Lattner Lexer *TL = Lexer::Create_PragmaLexer(TokLoc, PragmaLoc, RParenLoc, 2451fa495304c81e03f07f278a47b5efe9317104aabChris Lattner StrVal.size(), *this); 2465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer EnterSourceFileWithLexer(TL, 0); 2485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // With everything set up, lex this as a #pragma directive. 25080c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor HandlePragmaDirective(Introducer); 2515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 2525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// HandlePragmaOnce - Handle #pragma once. OnceTok is the 'once'. 2565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 257d217773f106856a11879ec79dc468efefaf2ee75Chris Lattnervoid Preprocessor::HandlePragmaOnce(Token &OnceTok) { 2585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (isInPrimaryFile()) { 2595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(OnceTok, diag::pp_pragma_once_in_main_file); 2605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return; 2615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Get the current file lexer we're looking at. Ignore _Pragma 'files' etc. 2645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Mark the file as a once-only file now. 2652b2453a7d8fe732561795431f39ceb2b2a832d84Chris Lattner HeaderInfo.MarkFileIncludeOnce(getCurrentFileLexer()->getFileEntry()); 2665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 2675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2682243449253475574fc6f14986ff8f7fce5d46799Chris Lattnervoid Preprocessor::HandlePragmaMark() { 26917ff58a63197b398ae52697b088dc0fb8b255519Ted Kremenek assert(CurPPLexer && "No current lexer?"); 2706896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner if (CurLexer) 2716896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner CurLexer->ReadToEndOfLine(); 2726896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner else 2736896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner CurPTHLexer->DiscardToEndOfLine(); 2742243449253475574fc6f14986ff8f7fce5d46799Chris Lattner} 2752243449253475574fc6f14986ff8f7fce5d46799Chris Lattner 2762243449253475574fc6f14986ff8f7fce5d46799Chris Lattner 2775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// HandlePragmaPoison - Handle #pragma GCC poison. PoisonTok is the 'poison'. 2785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 279d217773f106856a11879ec79dc468efefaf2ee75Chris Lattnervoid Preprocessor::HandlePragmaPoison(Token &PoisonTok) { 280d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner Token Tok; 2815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer while (1) { 2835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Read the next token to poison. While doing this, pretend that we are 2845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // skipping while reading the identifier to poison. 2855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // This avoids errors on code like: 2865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // #pragma GCC poison X 2875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // #pragma GCC poison X 28868a91d5736c2c03d60a9d1c59d08191b8e0d6c52Ted Kremenek if (CurPPLexer) CurPPLexer->LexingRawMode = true; 2895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer LexUnexpandedToken(Tok); 29068a91d5736c2c03d60a9d1c59d08191b8e0d6c52Ted Kremenek if (CurPPLexer) CurPPLexer->LexingRawMode = false; 2911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If we reached the end of line, we're done. 29322f6bbcafa8871f4f20c4402d9cbc5c024fee99aChris Lattner if (Tok.is(tok::eom)) return; 2941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Can only poison identifiers. 296c4bf2b9afb7d47445a9dc6bc848657098a4e3851Abramo Bagnara if (Tok.isNot(tok::raw_identifier)) { 2975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(Tok, diag::err_pp_invalid_poison); 2985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return; 2995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 3001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Look up the identifier info for the token. We disabled identifier lookup 3025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // by saying we're skipping contents, so we need to do this manually. 3035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierInfo *II = LookUpIdentifierInfo(Tok); 3041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Already poisoned. 3065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (II->isPoisoned()) continue; 3071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If this is a macro identifier, emit a warning. 3090edde55077cc3cb9fffeba19f5936f05a68c8e2bChris Lattner if (II->hasMacroDefinition()) 3105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(Tok, diag::pp_poisoning_existing_macro); 3111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Finally, poison it! 3135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer II->setIsPoisoned(); 3145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 3155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 3165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// HandlePragmaSystemHeader - Implement #pragma GCC system_header. We know 3185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// that the whole directive has been parsed. 319d217773f106856a11879ec79dc468efefaf2ee75Chris Lattnervoid Preprocessor::HandlePragmaSystemHeader(Token &SysHeaderTok) { 3205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (isInPrimaryFile()) { 3215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(SysHeaderTok, diag::pp_pragma_sysheader_in_main_file); 3225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return; 3235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 3241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Get the current file lexer we're looking at. Ignore _Pragma 'files' etc. 32635c10c25ddec4effbd26dead23ea5b04ee32f45aTed Kremenek PreprocessorLexer *TheLexer = getCurrentFileLexer(); 3271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Mark the file as a system header. 3292b2453a7d8fe732561795431f39ceb2b2a832d84Chris Lattner HeaderInfo.MarkFileSystemHeader(TheLexer->getFileEntry()); 3301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3326896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner PresumedLoc PLoc = SourceMgr.getPresumedLoc(SysHeaderTok.getLocation()); 333cb7b1e17b63967317ab5cc55682168cf0380519aDouglas Gregor if (PLoc.isInvalid()) 334cb7b1e17b63967317ab5cc55682168cf0380519aDouglas Gregor return; 335cb7b1e17b63967317ab5cc55682168cf0380519aDouglas Gregor 3366896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner unsigned FilenameLen = strlen(PLoc.getFilename()); 3376896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner unsigned FilenameID = SourceMgr.getLineTableFilenameID(PLoc.getFilename(), 3386896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner FilenameLen); 3391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3406896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner // Emit a line marker. This will change any source locations from this point 3416896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner // forward to realize they are in a system header. 3426896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner // Create a line note with this information. 3436896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner SourceMgr.AddLineNote(SysHeaderTok.getLocation(), PLoc.getLine(), FilenameID, 3446896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner false, false, true, false); 3451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Notify the client, if desired, that we are in a new source file. 3475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (Callbacks) 34835c10c25ddec4effbd26dead23ea5b04ee32f45aTed Kremenek Callbacks->FileChanged(SysHeaderTok.getLocation(), 3490b9e736308af5397f558ffc8e780c438c2fdb563Chris Lattner PPCallbacks::SystemHeaderPragma, SrcMgr::C_System); 3505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 3515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// HandlePragmaDependency - Handle #pragma GCC dependency "foo" blah. 3535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 354d217773f106856a11879ec79dc468efefaf2ee75Chris Lattnervoid Preprocessor::HandlePragmaDependency(Token &DependencyTok) { 355d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner Token FilenameTok; 35668a91d5736c2c03d60a9d1c59d08191b8e0d6c52Ted Kremenek CurPPLexer->LexIncludeFilename(FilenameTok); 3575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If the token kind is EOM, the error has already been diagnosed. 35922f6bbcafa8871f4f20c4402d9cbc5c024fee99aChris Lattner if (FilenameTok.is(tok::eom)) 3605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return; 3611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Reserve a buffer to get the spelling. 363a139481e62fdb209d9d87a54a5733f989d2e8d51Chris Lattner llvm::SmallString<128> FilenameBuffer; 364453091cc2082e207ea2c2dda645a9bc01b37fb0cDouglas Gregor bool Invalid = false; 365453091cc2082e207ea2c2dda645a9bc01b37fb0cDouglas Gregor llvm::StringRef Filename = getSpelling(FilenameTok, FilenameBuffer, &Invalid); 366453091cc2082e207ea2c2dda645a9bc01b37fb0cDouglas Gregor if (Invalid) 367453091cc2082e207ea2c2dda645a9bc01b37fb0cDouglas Gregor return; 3681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 369a139481e62fdb209d9d87a54a5733f989d2e8d51Chris Lattner bool isAngled = 370a139481e62fdb209d9d87a54a5733f989d2e8d51Chris Lattner GetIncludeFilenameSpelling(FilenameTok.getLocation(), Filename); 3715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If GetIncludeFilenameSpelling set the start ptr to null, there was an 3725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // error. 373a139481e62fdb209d9d87a54a5733f989d2e8d51Chris Lattner if (Filename.empty()) 3745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return; 3751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Search include directories for this file. 3775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const DirectoryLookup *CurDir; 378f45b646244705410866d62f1d8bf017a047ed662Chris Lattner const FileEntry *File = LookupFile(Filename, isAngled, 0, CurDir); 37956b05c8829efd13b7e5b333f8f587c71d025c67dChris Lattner if (File == 0) { 380a139481e62fdb209d9d87a54a5733f989d2e8d51Chris Lattner Diag(FilenameTok, diag::err_pp_file_not_found) << Filename; 38156b05c8829efd13b7e5b333f8f587c71d025c67dChris Lattner return; 38256b05c8829efd13b7e5b333f8f587c71d025c67dChris Lattner } 3831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3842b2453a7d8fe732561795431f39ceb2b2a832d84Chris Lattner const FileEntry *CurFile = getCurrentFileLexer()->getFileEntry(); 3855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If this file is older than the file it depends on, emit a diagnostic. 3875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (CurFile && CurFile->getModificationTime() < File->getModificationTime()) { 3885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Lex tokens at the end of the message and include them in the message. 3895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer std::string Message; 3905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Lex(DependencyTok); 39122f6bbcafa8871f4f20c4402d9cbc5c024fee99aChris Lattner while (DependencyTok.isNot(tok::eom)) { 3925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Message += getSpelling(DependencyTok) + " "; 3935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Lex(DependencyTok); 3945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 3951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 39696de25986d28171945db96a6c6a54f91fd12ae4bChris Lattner // Remove the trailing ' ' if present. 39796de25986d28171945db96a6c6a54f91fd12ae4bChris Lattner if (!Message.empty()) 39896de25986d28171945db96a6c6a54f91fd12ae4bChris Lattner Message.erase(Message.end()-1); 39956b05c8829efd13b7e5b333f8f587c71d025c67dChris Lattner Diag(FilenameTok, diag::pp_out_of_date_dependency) << Message; 4005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 4015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 4025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 403636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner/// HandlePragmaComment - Handle the microsoft #pragma comment extension. The 404636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner/// syntax is: 405636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner/// #pragma comment(linker, "foo") 406636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner/// 'linker' is one of five identifiers: compiler, exestr, lib, linker, user. 407636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner/// "foo" is a string, which is fully macro expanded, and permits string 408d7ee349f1dd84e023d09a35fb4d40c15888a55acGabor Greif/// concatenation, embedded escape characters etc. See MSDN for more details. 409636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattnervoid Preprocessor::HandlePragmaComment(Token &Tok) { 410636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner SourceLocation CommentLoc = Tok.getLocation(); 411636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner Lex(Tok); 412636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner if (Tok.isNot(tok::l_paren)) { 413636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner Diag(CommentLoc, diag::err_pragma_comment_malformed); 414636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner return; 415636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner } 4161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 417636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner // Read the identifier. 418636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner Lex(Tok); 419636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner if (Tok.isNot(tok::identifier)) { 420636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner Diag(CommentLoc, diag::err_pragma_comment_malformed); 421636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner return; 422636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner } 4231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 424636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner // Verify that this is one of the 5 whitelisted options. 425636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner // FIXME: warn that 'exestr' is deprecated. 426636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner const IdentifierInfo *II = Tok.getIdentifierInfo(); 4271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (!II->isStr("compiler") && !II->isStr("exestr") && !II->isStr("lib") && 428636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner !II->isStr("linker") && !II->isStr("user")) { 429636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner Diag(Tok.getLocation(), diag::err_pragma_comment_unknown_kind); 430636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner return; 431636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner } 4321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 433a9d9145741ef77db45890911674705b81605b10bChris Lattner // Read the optional string if present. 434636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner Lex(Tok); 435a9d9145741ef77db45890911674705b81605b10bChris Lattner std::string ArgumentString; 436636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner if (Tok.is(tok::comma)) { 437a9d9145741ef77db45890911674705b81605b10bChris Lattner Lex(Tok); // eat the comma. 438636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner 439636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner // We need at least one string. 440edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner if (Tok.isNot(tok::string_literal)) { 441636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner Diag(Tok.getLocation(), diag::err_pragma_comment_malformed); 442636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner return; 443636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner } 444636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner 445636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner // String concatenation allows multiple strings, which can even come from 446636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner // macro expansion. 447636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner // "foo " "bar" "Baz" 448a9d9145741ef77db45890911674705b81605b10bChris Lattner llvm::SmallVector<Token, 4> StrToks; 449edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner while (Tok.is(tok::string_literal)) { 450a9d9145741ef77db45890911674705b81605b10bChris Lattner StrToks.push_back(Tok); 451636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner Lex(Tok); 452a9d9145741ef77db45890911674705b81605b10bChris Lattner } 453a9d9145741ef77db45890911674705b81605b10bChris Lattner 454a9d9145741ef77db45890911674705b81605b10bChris Lattner // Concatenate and parse the strings. 455a9d9145741ef77db45890911674705b81605b10bChris Lattner StringLiteralParser Literal(&StrToks[0], StrToks.size(), *this); 456a9d9145741ef77db45890911674705b81605b10bChris Lattner assert(!Literal.AnyWide && "Didn't allow wide strings in"); 457a9d9145741ef77db45890911674705b81605b10bChris Lattner if (Literal.hadError) 458a9d9145741ef77db45890911674705b81605b10bChris Lattner return; 459a9d9145741ef77db45890911674705b81605b10bChris Lattner if (Literal.Pascal) { 460a9d9145741ef77db45890911674705b81605b10bChris Lattner Diag(StrToks[0].getLocation(), diag::err_pragma_comment_malformed); 461a9d9145741ef77db45890911674705b81605b10bChris Lattner return; 462a9d9145741ef77db45890911674705b81605b10bChris Lattner } 463a9d9145741ef77db45890911674705b81605b10bChris Lattner 464a9d9145741ef77db45890911674705b81605b10bChris Lattner ArgumentString = std::string(Literal.GetString(), 465a9d9145741ef77db45890911674705b81605b10bChris Lattner Literal.GetString()+Literal.GetStringLength()); 466636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner } 4671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 468a9d9145741ef77db45890911674705b81605b10bChris Lattner // FIXME: If the kind is "compiler" warn if the string is present (it is 469a9d9145741ef77db45890911674705b81605b10bChris Lattner // ignored). 470a9d9145741ef77db45890911674705b81605b10bChris Lattner // FIXME: 'lib' requires a comment string. 471a9d9145741ef77db45890911674705b81605b10bChris Lattner // FIXME: 'linker' requires a comment string, and has a specific list of 472a9d9145741ef77db45890911674705b81605b10bChris Lattner // things that are allowable. 4731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 474636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner if (Tok.isNot(tok::r_paren)) { 475636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner Diag(Tok.getLocation(), diag::err_pragma_comment_malformed); 476636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner return; 477636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner } 478a9d9145741ef77db45890911674705b81605b10bChris Lattner Lex(Tok); // eat the r_paren. 479636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner 480636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner if (Tok.isNot(tok::eom)) { 481636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner Diag(Tok.getLocation(), diag::err_pragma_comment_malformed); 482636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner return; 483636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner } 4841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 485a9d9145741ef77db45890911674705b81605b10bChris Lattner // If the pragma is lexically sound, notify any interested PPCallbacks. 486172e336b12fa32a1737f66d77a3f2de86f9cc8e8Chris Lattner if (Callbacks) 487172e336b12fa32a1737f66d77a3f2de86f9cc8e8Chris Lattner Callbacks->PragmaComment(CommentLoc, II, ArgumentString); 488636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner} 489636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner 490301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer/// HandlePragmaMessage - Handle the microsoft and gcc #pragma message 491301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer/// extension. The syntax is: 492301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer/// #pragma message(string) 493301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer/// OR, in GCC mode: 494301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer/// #pragma message string 495301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer/// string is a string, which is fully macro expanded, and permits string 496301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer/// concatenation, embedded escape characters, etc... See MSDN for more details. 497abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattnervoid Preprocessor::HandlePragmaMessage(Token &Tok) { 498abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner SourceLocation MessageLoc = Tok.getLocation(); 499abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner Lex(Tok); 500301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer bool ExpectClosingParen = false; 501d83fc546a4351df49a8d106daaecb959e7278a86Michael J. Spencer switch (Tok.getKind()) { 502301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer case tok::l_paren: 503301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer // We have a MSVC style pragma message. 504301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer ExpectClosingParen = true; 505301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer // Read the string. 506301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer Lex(Tok); 507301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer break; 508301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer case tok::string_literal: 509301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer // We have a GCC style pragma message, and we just read the string. 510301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer break; 511301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer default: 512abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner Diag(MessageLoc, diag::err_pragma_message_malformed); 513abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner return; 514abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner } 515abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner 516abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner // We need at least one string. 517abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner if (Tok.isNot(tok::string_literal)) { 518abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner Diag(Tok.getLocation(), diag::err_pragma_message_malformed); 519abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner return; 520abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner } 521abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner 522abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner // String concatenation allows multiple strings, which can even come from 523abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner // macro expansion. 524abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner // "foo " "bar" "Baz" 525abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner llvm::SmallVector<Token, 4> StrToks; 526abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner while (Tok.is(tok::string_literal)) { 527abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner StrToks.push_back(Tok); 528abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner Lex(Tok); 529abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner } 530abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner 531abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner // Concatenate and parse the strings. 532abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner StringLiteralParser Literal(&StrToks[0], StrToks.size(), *this); 533abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner assert(!Literal.AnyWide && "Didn't allow wide strings in"); 534abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner if (Literal.hadError) 535abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner return; 536abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner if (Literal.Pascal) { 537abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner Diag(StrToks[0].getLocation(), diag::err_pragma_message_malformed); 538abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner return; 539abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner } 540abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner 541abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner llvm::StringRef MessageString(Literal.GetString(), Literal.GetStringLength()); 542636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner 543301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer if (ExpectClosingParen) { 544301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer if (Tok.isNot(tok::r_paren)) { 545301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer Diag(Tok.getLocation(), diag::err_pragma_message_malformed); 546301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer return; 547301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer } 548301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer Lex(Tok); // eat the r_paren. 549abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner } 550abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner 551abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner if (Tok.isNot(tok::eom)) { 552abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner Diag(Tok.getLocation(), diag::err_pragma_message_malformed); 553abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner return; 554abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner } 555abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner 556abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner // Output the message. 557abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner Diag(MessageLoc, diag::warn_pragma_message) << MessageString; 558abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner 559abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner // If the pragma is lexically sound, notify any interested PPCallbacks. 560abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner if (Callbacks) 561abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner Callbacks->PragmaMessage(MessageLoc, MessageString); 562abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner} 563636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner 564f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// ParsePragmaPushOrPopMacro - Handle parsing of pragma push_macro/pop_macro. 565f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// Return the IdentifierInfo* associated with the macro to push or pop. 566f47724bf78299c7a50f008e0443c5f9f9f279ddcChris LattnerIdentifierInfo *Preprocessor::ParsePragmaPushOrPopMacro(Token &Tok) { 567f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Remember the pragma token location. 568f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner Token PragmaTok = Tok; 569f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 570f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Read the '('. 571f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner Lex(Tok); 572f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner if (Tok.isNot(tok::l_paren)) { 573f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner Diag(PragmaTok.getLocation(), diag::err_pragma_push_pop_macro_malformed) 574f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner << getSpelling(PragmaTok); 575f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner return 0; 576f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner } 577f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 578f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Read the macro name string. 579f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner Lex(Tok); 580f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner if (Tok.isNot(tok::string_literal)) { 581f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner Diag(PragmaTok.getLocation(), diag::err_pragma_push_pop_macro_malformed) 582f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner << getSpelling(PragmaTok); 583f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner return 0; 584f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner } 585f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 586f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Remember the macro string. 587f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner std::string StrVal = getSpelling(Tok); 588f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 589f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Read the ')'. 590f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner Lex(Tok); 591f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner if (Tok.isNot(tok::r_paren)) { 592f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner Diag(PragmaTok.getLocation(), diag::err_pragma_push_pop_macro_malformed) 593f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner << getSpelling(PragmaTok); 594f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner return 0; 595f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner } 596f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 597f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner assert(StrVal[0] == '"' && StrVal[StrVal.size()-1] == '"' && 598f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner "Invalid string token!"); 599f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 600f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Create a Token from the string. 601f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner Token MacroTok; 602f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner MacroTok.startToken(); 603c4bf2b9afb7d47445a9dc6bc848657098a4e3851Abramo Bagnara MacroTok.setKind(tok::raw_identifier); 604f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner CreateString(&StrVal[1], StrVal.size() - 2, MacroTok); 605f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 606f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Get the IdentifierInfo of MacroToPushTok. 607f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner return LookUpIdentifierInfo(MacroTok); 608f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner} 609f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 610f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// HandlePragmaPushMacro - Handle #pragma push_macro. 611f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// The syntax is: 612f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// #pragma push_macro("macro") 613f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattnervoid Preprocessor::HandlePragmaPushMacro(Token &PushMacroTok) { 614f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Parse the pragma directive and get the macro IdentifierInfo*. 615f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner IdentifierInfo *IdentInfo = ParsePragmaPushOrPopMacro(PushMacroTok); 616f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner if (!IdentInfo) return; 617f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 618f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Get the MacroInfo associated with IdentInfo. 619f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner MacroInfo *MI = getMacroInfo(IdentInfo); 620f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 621f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner MacroInfo *MacroCopyToPush = 0; 622f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner if (MI) { 623f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Make a clone of MI. 624f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner MacroCopyToPush = CloneMacroInfo(*MI); 625f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 626f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Allow the original MacroInfo to be redefined later. 627f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner MI->setIsAllowRedefinitionsWithoutWarning(true); 628f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner } 629f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 630f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Push the cloned MacroInfo so we can retrieve it later. 631f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner PragmaPushMacroInfo[IdentInfo].push_back(MacroCopyToPush); 632f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner} 633f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 634b275e3d4069fcc189b33e75a0611a6abd1efd28fTed Kremenek/// HandlePragmaPopMacro - Handle #pragma pop_macro. 635f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// The syntax is: 636f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// #pragma pop_macro("macro") 637f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattnervoid Preprocessor::HandlePragmaPopMacro(Token &PopMacroTok) { 638f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner SourceLocation MessageLoc = PopMacroTok.getLocation(); 639f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 640f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Parse the pragma directive and get the macro IdentifierInfo*. 641f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner IdentifierInfo *IdentInfo = ParsePragmaPushOrPopMacro(PopMacroTok); 642f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner if (!IdentInfo) return; 643f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 644f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Find the vector<MacroInfo*> associated with the macro. 645f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner llvm::DenseMap<IdentifierInfo*, std::vector<MacroInfo*> >::iterator iter = 646f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner PragmaPushMacroInfo.find(IdentInfo); 647f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner if (iter != PragmaPushMacroInfo.end()) { 648f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Release the MacroInfo currently associated with IdentInfo. 649f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner MacroInfo *CurrentMI = getMacroInfo(IdentInfo); 6500827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis if (CurrentMI) { 6510827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis if (CurrentMI->isWarnIfUnused()) 6520827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis WarnUnusedMacroLocs.erase(CurrentMI->getDefinitionLoc()); 6530827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis ReleaseMacroInfo(CurrentMI); 6540827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis } 655f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 656f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Get the MacroInfo we want to reinstall. 657f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner MacroInfo *MacroToReInstall = iter->second.back(); 658f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 659f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Reinstall the previously pushed macro. 660f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner setMacroInfo(IdentInfo, MacroToReInstall); 661f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 662f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Pop PragmaPushMacroInfo stack. 663f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner iter->second.pop_back(); 664f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner if (iter->second.size() == 0) 665f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner PragmaPushMacroInfo.erase(iter); 666f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner } else { 667f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner Diag(MessageLoc, diag::warn_pragma_pop_macro_no_push) 668f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner << IdentInfo->getName(); 669f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner } 670f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner} 6715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// AddPragmaHandler - Add the specified pragma handler to the preprocessor. 6735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// If 'Namespace' is non-null, then it is a token required to exist on the 6745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// pragma line before the pragma string starts, e.g. "STDC" or "GCC". 6759b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidisvoid Preprocessor::AddPragmaHandler(llvm::StringRef Namespace, 6765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PragmaHandler *Handler) { 6775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PragmaNamespace *InsertNS = PragmaHandlers; 6781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If this is specified to be in a namespace, step down into it. 6809b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis if (!Namespace.empty()) { 6815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If there is already a pragma handler with the name of this namespace, 6825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // we either have an error (directive with the same name as a namespace) or 6835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // we already have the namespace to insert into. 6849b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis if (PragmaHandler *Existing = PragmaHandlers->FindHandler(Namespace)) { 6855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer InsertNS = Existing->getIfNamespace(); 6865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(InsertNS != 0 && "Cannot have a pragma namespace and pragma" 6875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer " handler with the same name!"); 6885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } else { 6895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Otherwise, this namespace doesn't exist yet, create and insert the 6905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // handler for it. 6919b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis InsertNS = new PragmaNamespace(Namespace); 6925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PragmaHandlers->AddPragma(InsertNS); 6935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 6945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 6951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Check to make sure we don't already have a pragma for this identifier. 6975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(!InsertNS->FindHandler(Handler->getName()) && 6985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer "Pragma handler already exists for this identifier!"); 6995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer InsertNS->AddPragma(Handler); 7005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 7015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7024095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar/// RemovePragmaHandler - Remove the specific pragma handler from the 7034095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar/// preprocessor. If \arg Namespace is non-null, then it should be the 7044095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar/// namespace that \arg Handler was added to. It is an error to remove 7054095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar/// a handler that has not been registered. 7069b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidisvoid Preprocessor::RemovePragmaHandler(llvm::StringRef Namespace, 7074095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar PragmaHandler *Handler) { 7084095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar PragmaNamespace *NS = PragmaHandlers; 7091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7104095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar // If this is specified to be in a namespace, step down into it. 7119b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis if (!Namespace.empty()) { 7129b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaHandler *Existing = PragmaHandlers->FindHandler(Namespace); 7134095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar assert(Existing && "Namespace containing handler does not exist!"); 7144095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar 7154095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar NS = Existing->getIfNamespace(); 7164095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar assert(NS && "Invalid namespace, registered as a regular pragma handler!"); 7174095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar } 7184095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar 7194095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar NS->RemovePragmaHandler(Handler); 7201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7214095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar // If this is a non-default namespace and it is now empty, remove 7224095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar // it. 7234095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar if (NS != PragmaHandlers && NS->IsEmpty()) 7244095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar PragmaHandlers->RemovePragmaHandler(NS); 7254095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar} 7264095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar 7279d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbournebool Preprocessor::LexOnOffSwitch(tok::OnOffSwitch &Result) { 7289d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne Token Tok; 7299d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne LexUnexpandedToken(Tok); 7309d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne 7319d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne if (Tok.isNot(tok::identifier)) { 7329d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne Diag(Tok, diag::ext_on_off_switch_syntax); 7339d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne return true; 7349d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne } 7359d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne IdentifierInfo *II = Tok.getIdentifierInfo(); 7369d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne if (II->isStr("ON")) 7379d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne Result = tok::OOS_ON; 7389d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne else if (II->isStr("OFF")) 7399d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne Result = tok::OOS_OFF; 7409d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne else if (II->isStr("DEFAULT")) 7419d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne Result = tok::OOS_DEFAULT; 7429d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne else { 7439d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne Diag(Tok, diag::ext_on_off_switch_syntax); 7449d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne return true; 7459d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne } 7469d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne 7479d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne // Verify that this is followed by EOM. 7489d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne LexUnexpandedToken(Tok); 7499d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne if (Tok.isNot(tok::eom)) 7509d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne Diag(Tok, diag::ext_pragma_syntax_eom); 7519d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne return false; 7529d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne} 7539d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne 7545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencernamespace { 7552243449253475574fc6f14986ff8f7fce5d46799Chris Lattner/// PragmaOnceHandler - "#pragma once" marks the file as atomically included. 7565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerstruct PragmaOnceHandler : public PragmaHandler { 7579b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaOnceHandler() : PragmaHandler("once") {} 75880c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 75980c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &OnceTok) { 76035410d5cbbb18735d76e00496540d416dc49b577Chris Lattner PP.CheckEndOfDirective("pragma once"); 7615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PP.HandlePragmaOnce(OnceTok); 7625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 7645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7652243449253475574fc6f14986ff8f7fce5d46799Chris Lattner/// PragmaMarkHandler - "#pragma mark ..." is ignored by the compiler, and the 7662243449253475574fc6f14986ff8f7fce5d46799Chris Lattner/// rest of the line is not lexed. 7672243449253475574fc6f14986ff8f7fce5d46799Chris Lattnerstruct PragmaMarkHandler : public PragmaHandler { 7689b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaMarkHandler() : PragmaHandler("mark") {} 76980c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 77080c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &MarkTok) { 7712243449253475574fc6f14986ff8f7fce5d46799Chris Lattner PP.HandlePragmaMark(); 7722243449253475574fc6f14986ff8f7fce5d46799Chris Lattner } 7732243449253475574fc6f14986ff8f7fce5d46799Chris Lattner}; 7742243449253475574fc6f14986ff8f7fce5d46799Chris Lattner 7752243449253475574fc6f14986ff8f7fce5d46799Chris Lattner/// PragmaPoisonHandler - "#pragma poison x" marks x as not usable. 7765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerstruct PragmaPoisonHandler : public PragmaHandler { 7779b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaPoisonHandler() : PragmaHandler("poison") {} 77880c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 77980c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &PoisonTok) { 7805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PP.HandlePragmaPoison(PoisonTok); 7815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 7835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7842243449253475574fc6f14986ff8f7fce5d46799Chris Lattner/// PragmaSystemHeaderHandler - "#pragma system_header" marks the current file 7852243449253475574fc6f14986ff8f7fce5d46799Chris Lattner/// as a system header, which silences warnings in it. 7865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerstruct PragmaSystemHeaderHandler : public PragmaHandler { 7879b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaSystemHeaderHandler() : PragmaHandler("system_header") {} 78880c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 78980c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &SHToken) { 7905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PP.HandlePragmaSystemHeader(SHToken); 79135410d5cbbb18735d76e00496540d416dc49b577Chris Lattner PP.CheckEndOfDirective("pragma"); 7925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 7945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerstruct PragmaDependencyHandler : public PragmaHandler { 7959b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaDependencyHandler() : PragmaHandler("dependency") {} 79680c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 79780c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &DepToken) { 7985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PP.HandlePragmaDependency(DepToken); 7995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 8005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 8011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 802abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbarstruct PragmaDebugHandler : public PragmaHandler { 803abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar PragmaDebugHandler() : PragmaHandler("__debug") {} 80480c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 80580c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &DepToken) { 806abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar Token Tok; 807abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar PP.LexUnexpandedToken(Tok); 808abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar if (Tok.isNot(tok::identifier)) { 8096493a4d7129673f7878da2382dedf4f9abc57e4cDouglas Gregor PP.Diag(Tok, diag::warn_pragma_diagnostic_invalid); 810abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar return; 811abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar } 812abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar IdentifierInfo *II = Tok.getIdentifierInfo(); 813abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar 8145505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar if (II->isStr("assert")) { 8155505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar assert(0 && "This is an assertion!"); 816abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar } else if (II->isStr("crash")) { 8175505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar *(volatile int*) 0x11 = 0; 8185505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar } else if (II->isStr("llvm_fatal_error")) { 8195505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar llvm::report_fatal_error("#pragma clang __debug llvm_fatal_error"); 8205505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar } else if (II->isStr("llvm_unreachable")) { 8215505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar llvm_unreachable("#pragma clang __debug llvm_unreachable"); 8225505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar } else if (II->isStr("overflow_stack")) { 8235505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar DebugOverflowStack(); 824ff759a66526d6a985fb4efae69c6b798d83364dfDaniel Dunbar } else if (II->isStr("handle_crash")) { 825ff759a66526d6a985fb4efae69c6b798d83364dfDaniel Dunbar llvm::CrashRecoveryContext *CRC =llvm::CrashRecoveryContext::GetCurrent(); 826ff759a66526d6a985fb4efae69c6b798d83364dfDaniel Dunbar if (CRC) 827ff759a66526d6a985fb4efae69c6b798d83364dfDaniel Dunbar CRC->HandleCrash(); 8285505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar } else { 8295505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar PP.Diag(Tok, diag::warn_pragma_debug_unexpected_command) 8305505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar << II->getName(); 831abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar } 832abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar } 833abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar 834abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar void DebugOverflowStack() { 835abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar DebugOverflowStack(); 836abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar } 837abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar}; 838abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar 839edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner/// PragmaDiagnosticHandler - e.g. '#pragma GCC diagnostic ignored "-Wformat"' 840edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattnerstruct PragmaDiagnosticHandler : public PragmaHandler { 84104ae2df026b275aae5dddfc0db5ca55ff4e62179Chris Lattnerpublic: 8426493a4d7129673f7878da2382dedf4f9abc57e4cDouglas Gregor explicit PragmaDiagnosticHandler() : PragmaHandler("diagnostic") {} 84380c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 84480c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &DiagToken) { 8450827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis SourceLocation DiagLoc = DiagToken.getLocation(); 846edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner Token Tok; 847edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner PP.LexUnexpandedToken(Tok); 848edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner if (Tok.isNot(tok::identifier)) { 8496493a4d7129673f7878da2382dedf4f9abc57e4cDouglas Gregor PP.Diag(Tok, diag::warn_pragma_diagnostic_invalid); 850edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner return; 851edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner } 852edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner IdentifierInfo *II = Tok.getIdentifierInfo(); 8531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 854edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner diag::Mapping Map; 855edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner if (II->isStr("warning")) 856edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner Map = diag::MAP_WARNING; 857edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner else if (II->isStr("error")) 858edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner Map = diag::MAP_ERROR; 859edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner else if (II->isStr("ignored")) 860edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner Map = diag::MAP_IGNORE; 861edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner else if (II->isStr("fatal")) 862edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner Map = diag::MAP_FATAL; 8636493a4d7129673f7878da2382dedf4f9abc57e4cDouglas Gregor else if (II->isStr("pop")) { 8640827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis if (!PP.getDiagnostics().popMappings(DiagLoc)) 8656493a4d7129673f7878da2382dedf4f9abc57e4cDouglas Gregor PP.Diag(Tok, diag::warn_pragma_diagnostic_cannot_pop); 8666493a4d7129673f7878da2382dedf4f9abc57e4cDouglas Gregor 8676493a4d7129673f7878da2382dedf4f9abc57e4cDouglas Gregor return; 8686493a4d7129673f7878da2382dedf4f9abc57e4cDouglas Gregor } else if (II->isStr("push")) { 8690827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis PP.getDiagnostics().pushMappings(DiagLoc); 87004ae2df026b275aae5dddfc0db5ca55ff4e62179Chris Lattner return; 87104ae2df026b275aae5dddfc0db5ca55ff4e62179Chris Lattner } else { 8726493a4d7129673f7878da2382dedf4f9abc57e4cDouglas Gregor PP.Diag(Tok, diag::warn_pragma_diagnostic_invalid); 873edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner return; 874edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner } 8751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 876edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner PP.LexUnexpandedToken(Tok); 877edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner 878edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner // We need at least one string. 879edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner if (Tok.isNot(tok::string_literal)) { 880edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner PP.Diag(Tok.getLocation(), diag::warn_pragma_diagnostic_invalid_token); 881edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner return; 882edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner } 8831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 884edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner // String concatenation allows multiple strings, which can even come from 885edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner // macro expansion. 886edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner // "foo " "bar" "Baz" 887edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner llvm::SmallVector<Token, 4> StrToks; 888edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner while (Tok.is(tok::string_literal)) { 889edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner StrToks.push_back(Tok); 890edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner PP.LexUnexpandedToken(Tok); 891edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner } 8921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 893edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner if (Tok.isNot(tok::eom)) { 894edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner PP.Diag(Tok.getLocation(), diag::warn_pragma_diagnostic_invalid_token); 895edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner return; 896edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner } 8971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 898edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner // Concatenate and parse the strings. 899edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner StringLiteralParser Literal(&StrToks[0], StrToks.size(), PP); 900edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner assert(!Literal.AnyWide && "Didn't allow wide strings in"); 901edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner if (Literal.hadError) 902edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner return; 903edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner if (Literal.Pascal) { 9046493a4d7129673f7878da2382dedf4f9abc57e4cDouglas Gregor PP.Diag(Tok, diag::warn_pragma_diagnostic_invalid); 905edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner return; 906edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner } 90704ae2df026b275aae5dddfc0db5ca55ff4e62179Chris Lattner 908edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner std::string WarningName(Literal.GetString(), 909edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner Literal.GetString()+Literal.GetStringLength()); 910edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner 911edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner if (WarningName.size() < 3 || WarningName[0] != '-' || 912edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner WarningName[1] != 'W') { 913edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner PP.Diag(StrToks[0].getLocation(), 914edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner diag::warn_pragma_diagnostic_invalid_option); 915edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner return; 916edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner } 9171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 918edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner if (PP.getDiagnostics().setDiagnosticGroupMapping(WarningName.c_str()+2, 9190827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis Map, DiagLoc)) 920edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner PP.Diag(StrToks[0].getLocation(), 921edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner diag::warn_pragma_diagnostic_unknown_warning) << WarningName; 922edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner } 923edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner}; 9241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 925636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner/// PragmaCommentHandler - "#pragma comment ...". 926636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattnerstruct PragmaCommentHandler : public PragmaHandler { 9279b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaCommentHandler() : PragmaHandler("comment") {} 92880c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 92980c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &CommentTok) { 930636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner PP.HandlePragmaComment(CommentTok); 931636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner } 932636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner}; 9331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 934abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner/// PragmaMessageHandler - "#pragma message("...")". 935abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattnerstruct PragmaMessageHandler : public PragmaHandler { 9369b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaMessageHandler() : PragmaHandler("message") {} 93780c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 93880c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &CommentTok) { 939abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner PP.HandlePragmaMessage(CommentTok); 940abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner } 941abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner}; 942abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner 943f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// PragmaPushMacroHandler - "#pragma push_macro" saves the value of the 944f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// macro on the top of the stack. 945f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattnerstruct PragmaPushMacroHandler : public PragmaHandler { 946f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner PragmaPushMacroHandler() : PragmaHandler("push_macro") {} 94780c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 94880c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &PushMacroTok) { 949f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner PP.HandlePragmaPushMacro(PushMacroTok); 950f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner } 951f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner}; 952f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 953f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 954f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// PragmaPopMacroHandler - "#pragma pop_macro" sets the value of the 955f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// macro to the value on the top of the stack. 956f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattnerstruct PragmaPopMacroHandler : public PragmaHandler { 957f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner PragmaPopMacroHandler() : PragmaHandler("pop_macro") {} 95880c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 95980c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &PopMacroTok) { 960f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner PP.HandlePragmaPopMacro(PopMacroTok); 961f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner } 962f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner}; 963f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 964062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner// Pragma STDC implementations. 9656c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner 966062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner/// PragmaSTDC_FENV_ACCESSHandler - "#pragma STDC FENV_ACCESS ...". 967062f23246510393c19b537b68ec88b6a08ee8996Chris Lattnerstruct PragmaSTDC_FENV_ACCESSHandler : public PragmaHandler { 9689b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaSTDC_FENV_ACCESSHandler() : PragmaHandler("FENV_ACCESS") {} 96980c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 97080c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &Tok) { 9719d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne tok::OnOffSwitch OOS; 9729d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne if (PP.LexOnOffSwitch(OOS)) 9739d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne return; 9749d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne if (OOS == tok::OOS_ON) 9754d8aac3778b40c161bed9964125948ee01c08821Chris Lattner PP.Diag(Tok, diag::warn_stdc_fenv_access_not_supported); 976062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner } 977062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner}; 9781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 979062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner/// PragmaSTDC_CX_LIMITED_RANGEHandler - "#pragma STDC CX_LIMITED_RANGE ...". 980062f23246510393c19b537b68ec88b6a08ee8996Chris Lattnerstruct PragmaSTDC_CX_LIMITED_RANGEHandler : public PragmaHandler { 9819b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaSTDC_CX_LIMITED_RANGEHandler() 9829b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis : PragmaHandler("CX_LIMITED_RANGE") {} 98380c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 98480c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &Tok) { 9859d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne tok::OnOffSwitch OOS; 9869d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne PP.LexOnOffSwitch(OOS); 987062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner } 988062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner}; 9891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 990062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner/// PragmaSTDC_UnknownHandler - "#pragma STDC ...". 991062f23246510393c19b537b68ec88b6a08ee8996Chris Lattnerstruct PragmaSTDC_UnknownHandler : public PragmaHandler { 9929b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaSTDC_UnknownHandler() {} 99380c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 99480c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &UnknownTok) { 9956c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner // C99 6.10.6p2, unknown forms are not allowed. 996f545be5552b6fd40a4c766fbf82dab0ab5305790Chris Lattner PP.Diag(UnknownTok, diag::ext_stdc_pragma_ignored); 997062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner } 998062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner}; 9991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} // end anonymous namespace 10015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 10025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 10035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// RegisterBuiltinPragmas - Install the standard preprocessor pragmas: 10045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// #pragma GCC poison/system_header/dependency and #pragma once. 10055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencervoid Preprocessor::RegisterBuiltinPragmas() { 10069b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler(new PragmaOnceHandler()); 10079b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler(new PragmaMarkHandler()); 1008f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner AddPragmaHandler(new PragmaPushMacroHandler()); 1009f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner AddPragmaHandler(new PragmaPopMacroHandler()); 1010301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer AddPragmaHandler(new PragmaMessageHandler()); 10111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1012e8fa06e07363b6d5e6c371bbd454d51bab78d01dChris Lattner // #pragma GCC ... 10139b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler("GCC", new PragmaPoisonHandler()); 10149b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler("GCC", new PragmaSystemHeaderHandler()); 10159b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler("GCC", new PragmaDependencyHandler()); 10166493a4d7129673f7878da2382dedf4f9abc57e4cDouglas Gregor AddPragmaHandler("GCC", new PragmaDiagnosticHandler()); 1017e8fa06e07363b6d5e6c371bbd454d51bab78d01dChris Lattner // #pragma clang ... 10189b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler("clang", new PragmaPoisonHandler()); 10199b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler("clang", new PragmaSystemHeaderHandler()); 1020abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar AddPragmaHandler("clang", new PragmaDebugHandler()); 10219b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler("clang", new PragmaDependencyHandler()); 10226493a4d7129673f7878da2382dedf4f9abc57e4cDouglas Gregor AddPragmaHandler("clang", new PragmaDiagnosticHandler()); 10239b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis 10249b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler("STDC", new PragmaSTDC_FENV_ACCESSHandler()); 10259b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler("STDC", new PragmaSTDC_CX_LIMITED_RANGEHandler()); 1026062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner AddPragmaHandler("STDC", new PragmaSTDC_UnknownHandler()); 10271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1028636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner // MS extensions. 1029abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner if (Features.Microsoft) { 10309b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler(new PragmaCommentHandler()); 1031abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner } 10325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 1033