Pragma.cpp revision d83fc546a4351df49a8d106daaecb959e7278a86
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. 113027cff63321262a5a85a402c39aac06ee66c745dChris Lattner if (CurPPLexer && CurPPLexer->ParsingPreprocessorDirective) 1145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DiscardUntilEndOfDirective(); 1155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 1165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// Handle_Pragma - Read a _Pragma directive, slice it up, process it, then 1185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// return the first token after the directive. The _Pragma token has just 1195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// been read into 'Tok'. 120d217773f106856a11879ec79dc468efefaf2ee75Chris Lattnervoid Preprocessor::Handle_Pragma(Token &Tok) { 1215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Remember the pragma token location. 1225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation PragmaLoc = Tok.getLocation(); 1231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Read the '('. 1255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Lex(Tok); 1263692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner if (Tok.isNot(tok::l_paren)) { 1273692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner Diag(PragmaLoc, diag::err__Pragma_malformed); 1283692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner return; 1293692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner } 1305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Read the '"..."'. 1325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Lex(Tok); 1333692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner if (Tok.isNot(tok::string_literal) && Tok.isNot(tok::wide_string_literal)) { 1343692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner Diag(PragmaLoc, diag::err__Pragma_malformed); 1353692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner return; 1363692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner } 1371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Remember the string. 1395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer std::string StrVal = getSpelling(Tok); 1405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Read the ')'. 1425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Lex(Tok); 1433692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner if (Tok.isNot(tok::r_paren)) { 1443692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner Diag(PragmaLoc, diag::err__Pragma_malformed); 1453692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner return; 1463692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner } 1471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 148e7fb48466afcbf2c4ccdfa658824282fdc3c512cChris Lattner SourceLocation RParenLoc = Tok.getLocation(); 1491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 150a9d9145741ef77db45890911674705b81605b10bChris Lattner // The _Pragma is lexically sound. Destringize according to C99 6.10.9.1: 151a9d9145741ef77db45890911674705b81605b10bChris Lattner // "The string literal is destringized by deleting the L prefix, if present, 152a9d9145741ef77db45890911674705b81605b10bChris Lattner // deleting the leading and trailing double-quotes, replacing each escape 153a9d9145741ef77db45890911674705b81605b10bChris Lattner // sequence \" by a double-quote, and replacing each escape sequence \\ by a 154a9d9145741ef77db45890911674705b81605b10bChris Lattner // single backslash." 1555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (StrVal[0] == 'L') // Remove L prefix. 1565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer StrVal.erase(StrVal.begin()); 1575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(StrVal[0] == '"' && StrVal[StrVal.size()-1] == '"' && 1585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer "Invalid string token!"); 1591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Remove the front quote, replacing it with a space, so that the pragma 1615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // contents appear to have a space before them. 1625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer StrVal[0] = ' '; 1631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1641fa495304c81e03f07f278a47b5efe9317104aabChris Lattner // Replace the terminating quote with a \n. 1655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer StrVal[StrVal.size()-1] = '\n'; 1661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Remove escaped quotes and escapes. 1685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer for (unsigned i = 0, e = StrVal.size(); i != e-1; ++i) { 1695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (StrVal[i] == '\\' && 1705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer (StrVal[i+1] == '\\' || StrVal[i+1] == '"')) { 1715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // \\ -> '\' and \" -> '"'. 1725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer StrVal.erase(StrVal.begin()+i); 1735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer --e; 1745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1761ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 17780c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Handle_Pragma(PIK__Pragma, StrVal, PragmaLoc, RParenLoc); 1781ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 1791ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall // Finally, return whatever came after the pragma directive. 1801ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall return Lex(Tok); 1811ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall} 1821ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 1831ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall/// HandleMicrosoft__pragma - Like Handle_Pragma except the pragma text 1841ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall/// is not enclosed within a string literal. 1851ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCallvoid Preprocessor::HandleMicrosoft__pragma(Token &Tok) { 1861ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall // Remember the pragma token location. 1871ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall SourceLocation PragmaLoc = Tok.getLocation(); 1881ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 1891ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall // Read the '('. 1901ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall Lex(Tok); 1911ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall if (Tok.isNot(tok::l_paren)) { 1921ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall Diag(PragmaLoc, diag::err__Pragma_malformed); 1931ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall return; 1941ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall } 1951ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 1961ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall // Get the tokens enclosed within the __pragma(). 1971ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall llvm::SmallVector<Token, 32> PragmaToks; 1981ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall int NumParens = 0; 1991ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall Lex(Tok); 2001ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall while (Tok.isNot(tok::eof)) { 2011ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall if (Tok.is(tok::l_paren)) 2021ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall NumParens++; 2031ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall else if (Tok.is(tok::r_paren) && NumParens-- == 0) 2041ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall break; 2051ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall PragmaToks.push_back(Tok); 2061ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall Lex(Tok); 2071ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall } 2081ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 2093da92a9d21f707c164797dd967ba894b2282b343John McCall if (Tok.is(tok::eof)) { 2103da92a9d21f707c164797dd967ba894b2282b343John McCall Diag(PragmaLoc, diag::err_unterminated___pragma); 2113da92a9d21f707c164797dd967ba894b2282b343John McCall return; 2123da92a9d21f707c164797dd967ba894b2282b343John McCall } 2133da92a9d21f707c164797dd967ba894b2282b343John McCall 2141ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall // Build the pragma string. 2151ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall std::string StrVal = " "; 2161ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall for (llvm::SmallVector<Token, 32>::iterator I = 2171ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall PragmaToks.begin(), E = PragmaToks.end(); I != E; ++I) { 2181ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall StrVal += getSpelling(*I); 2191ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall } 2201ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 2211ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall SourceLocation RParenLoc = Tok.getLocation(); 2221ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 22380c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Handle_Pragma(PIK___pragma, StrVal, PragmaLoc, RParenLoc); 2241ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 2251ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall // Finally, return whatever came after the pragma directive. 2261ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall return Lex(Tok); 2271ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall} 2281ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 22980c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregorvoid Preprocessor::Handle_Pragma(unsigned Introducer, 23080c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor const std::string &StrVal, 2311ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall SourceLocation PragmaLoc, 2321ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall SourceLocation RParenLoc) { 2331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Plop the string (including the newline and trailing null) into a buffer 2355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // where we can lex it. 23647246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner Token TmpTok; 23747246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner TmpTok.startToken(); 23847246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner CreateString(&StrVal[0], StrVal.size(), TmpTok); 23947246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner SourceLocation TokLoc = TmpTok.getLocation(); 2405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Make and enter a lexer object so that we lex and expand the tokens just 2425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // like any others. 243e7fb48466afcbf2c4ccdfa658824282fdc3c512cChris Lattner Lexer *TL = Lexer::Create_PragmaLexer(TokLoc, PragmaLoc, RParenLoc, 2441fa495304c81e03f07f278a47b5efe9317104aabChris Lattner StrVal.size(), *this); 2455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer EnterSourceFileWithLexer(TL, 0); 2475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // With everything set up, lex this as a #pragma directive. 24980c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor HandlePragmaDirective(Introducer); 2505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 2515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// HandlePragmaOnce - Handle #pragma once. OnceTok is the 'once'. 2555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 256d217773f106856a11879ec79dc468efefaf2ee75Chris Lattnervoid Preprocessor::HandlePragmaOnce(Token &OnceTok) { 2575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (isInPrimaryFile()) { 2585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(OnceTok, diag::pp_pragma_once_in_main_file); 2595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return; 2605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Get the current file lexer we're looking at. Ignore _Pragma 'files' etc. 2635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Mark the file as a once-only file now. 2642b2453a7d8fe732561795431f39ceb2b2a832d84Chris Lattner HeaderInfo.MarkFileIncludeOnce(getCurrentFileLexer()->getFileEntry()); 2655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 2665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2672243449253475574fc6f14986ff8f7fce5d46799Chris Lattnervoid Preprocessor::HandlePragmaMark() { 26817ff58a63197b398ae52697b088dc0fb8b255519Ted Kremenek assert(CurPPLexer && "No current lexer?"); 2696896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner if (CurLexer) 2706896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner CurLexer->ReadToEndOfLine(); 2716896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner else 2726896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner CurPTHLexer->DiscardToEndOfLine(); 2732243449253475574fc6f14986ff8f7fce5d46799Chris Lattner} 2742243449253475574fc6f14986ff8f7fce5d46799Chris Lattner 2752243449253475574fc6f14986ff8f7fce5d46799Chris Lattner 2765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// HandlePragmaPoison - Handle #pragma GCC poison. PoisonTok is the 'poison'. 2775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 278d217773f106856a11879ec79dc468efefaf2ee75Chris Lattnervoid Preprocessor::HandlePragmaPoison(Token &PoisonTok) { 279d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner Token Tok; 2805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer while (1) { 2825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Read the next token to poison. While doing this, pretend that we are 2835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // skipping while reading the identifier to poison. 2845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // This avoids errors on code like: 2855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // #pragma GCC poison X 2865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // #pragma GCC poison X 28768a91d5736c2c03d60a9d1c59d08191b8e0d6c52Ted Kremenek if (CurPPLexer) CurPPLexer->LexingRawMode = true; 2885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer LexUnexpandedToken(Tok); 28968a91d5736c2c03d60a9d1c59d08191b8e0d6c52Ted Kremenek if (CurPPLexer) CurPPLexer->LexingRawMode = false; 2901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If we reached the end of line, we're done. 29222f6bbcafa8871f4f20c4402d9cbc5c024fee99aChris Lattner if (Tok.is(tok::eom)) return; 2931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Can only poison identifiers. 29522f6bbcafa8871f4f20c4402d9cbc5c024fee99aChris Lattner if (Tok.isNot(tok::identifier)) { 2965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(Tok, diag::err_pp_invalid_poison); 2975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return; 2985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Look up the identifier info for the token. We disabled identifier lookup 3015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // by saying we're skipping contents, so we need to do this manually. 3025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierInfo *II = LookUpIdentifierInfo(Tok); 3031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Already poisoned. 3055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (II->isPoisoned()) continue; 3061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If this is a macro identifier, emit a warning. 3080edde55077cc3cb9fffeba19f5936f05a68c8e2bChris Lattner if (II->hasMacroDefinition()) 3095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(Tok, diag::pp_poisoning_existing_macro); 3101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Finally, poison it! 3125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer II->setIsPoisoned(); 3135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 3145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 3155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// HandlePragmaSystemHeader - Implement #pragma GCC system_header. We know 3175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// that the whole directive has been parsed. 318d217773f106856a11879ec79dc468efefaf2ee75Chris Lattnervoid Preprocessor::HandlePragmaSystemHeader(Token &SysHeaderTok) { 3195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (isInPrimaryFile()) { 3205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(SysHeaderTok, diag::pp_pragma_sysheader_in_main_file); 3215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return; 3225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 3231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Get the current file lexer we're looking at. Ignore _Pragma 'files' etc. 32535c10c25ddec4effbd26dead23ea5b04ee32f45aTed Kremenek PreprocessorLexer *TheLexer = getCurrentFileLexer(); 3261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Mark the file as a system header. 3282b2453a7d8fe732561795431f39ceb2b2a832d84Chris Lattner HeaderInfo.MarkFileSystemHeader(TheLexer->getFileEntry()); 3291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3316896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner PresumedLoc PLoc = SourceMgr.getPresumedLoc(SysHeaderTok.getLocation()); 3326896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner unsigned FilenameLen = strlen(PLoc.getFilename()); 3336896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner unsigned FilenameID = SourceMgr.getLineTableFilenameID(PLoc.getFilename(), 3346896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner FilenameLen); 3351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3366896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner // Emit a line marker. This will change any source locations from this point 3376896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner // forward to realize they are in a system header. 3386896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner // Create a line note with this information. 3396896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner SourceMgr.AddLineNote(SysHeaderTok.getLocation(), PLoc.getLine(), FilenameID, 3406896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner false, false, true, false); 3411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Notify the client, if desired, that we are in a new source file. 3435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (Callbacks) 34435c10c25ddec4effbd26dead23ea5b04ee32f45aTed Kremenek Callbacks->FileChanged(SysHeaderTok.getLocation(), 3450b9e736308af5397f558ffc8e780c438c2fdb563Chris Lattner PPCallbacks::SystemHeaderPragma, SrcMgr::C_System); 3465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 3475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// HandlePragmaDependency - Handle #pragma GCC dependency "foo" blah. 3495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 350d217773f106856a11879ec79dc468efefaf2ee75Chris Lattnervoid Preprocessor::HandlePragmaDependency(Token &DependencyTok) { 351d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner Token FilenameTok; 35268a91d5736c2c03d60a9d1c59d08191b8e0d6c52Ted Kremenek CurPPLexer->LexIncludeFilename(FilenameTok); 3535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If the token kind is EOM, the error has already been diagnosed. 35522f6bbcafa8871f4f20c4402d9cbc5c024fee99aChris Lattner if (FilenameTok.is(tok::eom)) 3565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return; 3571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Reserve a buffer to get the spelling. 359a139481e62fdb209d9d87a54a5733f989d2e8d51Chris Lattner llvm::SmallString<128> FilenameBuffer; 360453091cc2082e207ea2c2dda645a9bc01b37fb0cDouglas Gregor bool Invalid = false; 361453091cc2082e207ea2c2dda645a9bc01b37fb0cDouglas Gregor llvm::StringRef Filename = getSpelling(FilenameTok, FilenameBuffer, &Invalid); 362453091cc2082e207ea2c2dda645a9bc01b37fb0cDouglas Gregor if (Invalid) 363453091cc2082e207ea2c2dda645a9bc01b37fb0cDouglas Gregor return; 3641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 365a139481e62fdb209d9d87a54a5733f989d2e8d51Chris Lattner bool isAngled = 366a139481e62fdb209d9d87a54a5733f989d2e8d51Chris Lattner GetIncludeFilenameSpelling(FilenameTok.getLocation(), Filename); 3675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If GetIncludeFilenameSpelling set the start ptr to null, there was an 3685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // error. 369a139481e62fdb209d9d87a54a5733f989d2e8d51Chris Lattner if (Filename.empty()) 3705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return; 3711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Search include directories for this file. 3735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const DirectoryLookup *CurDir; 374f45b646244705410866d62f1d8bf017a047ed662Chris Lattner const FileEntry *File = LookupFile(Filename, isAngled, 0, CurDir); 37556b05c8829efd13b7e5b333f8f587c71d025c67dChris Lattner if (File == 0) { 376a139481e62fdb209d9d87a54a5733f989d2e8d51Chris Lattner Diag(FilenameTok, diag::err_pp_file_not_found) << Filename; 37756b05c8829efd13b7e5b333f8f587c71d025c67dChris Lattner return; 37856b05c8829efd13b7e5b333f8f587c71d025c67dChris Lattner } 3791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3802b2453a7d8fe732561795431f39ceb2b2a832d84Chris Lattner const FileEntry *CurFile = getCurrentFileLexer()->getFileEntry(); 3815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If this file is older than the file it depends on, emit a diagnostic. 3835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (CurFile && CurFile->getModificationTime() < File->getModificationTime()) { 3845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Lex tokens at the end of the message and include them in the message. 3855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer std::string Message; 3865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Lex(DependencyTok); 38722f6bbcafa8871f4f20c4402d9cbc5c024fee99aChris Lattner while (DependencyTok.isNot(tok::eom)) { 3885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Message += getSpelling(DependencyTok) + " "; 3895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Lex(DependencyTok); 3905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 3911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 39296de25986d28171945db96a6c6a54f91fd12ae4bChris Lattner // Remove the trailing ' ' if present. 39396de25986d28171945db96a6c6a54f91fd12ae4bChris Lattner if (!Message.empty()) 39496de25986d28171945db96a6c6a54f91fd12ae4bChris Lattner Message.erase(Message.end()-1); 39556b05c8829efd13b7e5b333f8f587c71d025c67dChris Lattner Diag(FilenameTok, diag::pp_out_of_date_dependency) << Message; 3965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 3975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 3985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 399636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner/// HandlePragmaComment - Handle the microsoft #pragma comment extension. The 400636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner/// syntax is: 401636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner/// #pragma comment(linker, "foo") 402636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner/// 'linker' is one of five identifiers: compiler, exestr, lib, linker, user. 403636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner/// "foo" is a string, which is fully macro expanded, and permits string 404d7ee349f1dd84e023d09a35fb4d40c15888a55acGabor Greif/// concatenation, embedded escape characters etc. See MSDN for more details. 405636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattnervoid Preprocessor::HandlePragmaComment(Token &Tok) { 406636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner SourceLocation CommentLoc = Tok.getLocation(); 407636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner Lex(Tok); 408636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner if (Tok.isNot(tok::l_paren)) { 409636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner Diag(CommentLoc, diag::err_pragma_comment_malformed); 410636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner return; 411636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner } 4121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 413636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner // Read the identifier. 414636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner Lex(Tok); 415636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner if (Tok.isNot(tok::identifier)) { 416636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner Diag(CommentLoc, diag::err_pragma_comment_malformed); 417636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner return; 418636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner } 4191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 420636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner // Verify that this is one of the 5 whitelisted options. 421636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner // FIXME: warn that 'exestr' is deprecated. 422636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner const IdentifierInfo *II = Tok.getIdentifierInfo(); 4231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (!II->isStr("compiler") && !II->isStr("exestr") && !II->isStr("lib") && 424636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner !II->isStr("linker") && !II->isStr("user")) { 425636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner Diag(Tok.getLocation(), diag::err_pragma_comment_unknown_kind); 426636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner return; 427636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner } 4281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 429a9d9145741ef77db45890911674705b81605b10bChris Lattner // Read the optional string if present. 430636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner Lex(Tok); 431a9d9145741ef77db45890911674705b81605b10bChris Lattner std::string ArgumentString; 432636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner if (Tok.is(tok::comma)) { 433a9d9145741ef77db45890911674705b81605b10bChris Lattner Lex(Tok); // eat the comma. 434636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner 435636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner // We need at least one string. 436edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner if (Tok.isNot(tok::string_literal)) { 437636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner Diag(Tok.getLocation(), diag::err_pragma_comment_malformed); 438636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner return; 439636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner } 440636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner 441636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner // String concatenation allows multiple strings, which can even come from 442636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner // macro expansion. 443636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner // "foo " "bar" "Baz" 444a9d9145741ef77db45890911674705b81605b10bChris Lattner llvm::SmallVector<Token, 4> StrToks; 445edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner while (Tok.is(tok::string_literal)) { 446a9d9145741ef77db45890911674705b81605b10bChris Lattner StrToks.push_back(Tok); 447636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner Lex(Tok); 448a9d9145741ef77db45890911674705b81605b10bChris Lattner } 449a9d9145741ef77db45890911674705b81605b10bChris Lattner 450a9d9145741ef77db45890911674705b81605b10bChris Lattner // Concatenate and parse the strings. 451a9d9145741ef77db45890911674705b81605b10bChris Lattner StringLiteralParser Literal(&StrToks[0], StrToks.size(), *this); 452a9d9145741ef77db45890911674705b81605b10bChris Lattner assert(!Literal.AnyWide && "Didn't allow wide strings in"); 453a9d9145741ef77db45890911674705b81605b10bChris Lattner if (Literal.hadError) 454a9d9145741ef77db45890911674705b81605b10bChris Lattner return; 455a9d9145741ef77db45890911674705b81605b10bChris Lattner if (Literal.Pascal) { 456a9d9145741ef77db45890911674705b81605b10bChris Lattner Diag(StrToks[0].getLocation(), diag::err_pragma_comment_malformed); 457a9d9145741ef77db45890911674705b81605b10bChris Lattner return; 458a9d9145741ef77db45890911674705b81605b10bChris Lattner } 459a9d9145741ef77db45890911674705b81605b10bChris Lattner 460a9d9145741ef77db45890911674705b81605b10bChris Lattner ArgumentString = std::string(Literal.GetString(), 461a9d9145741ef77db45890911674705b81605b10bChris Lattner Literal.GetString()+Literal.GetStringLength()); 462636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner } 4631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 464a9d9145741ef77db45890911674705b81605b10bChris Lattner // FIXME: If the kind is "compiler" warn if the string is present (it is 465a9d9145741ef77db45890911674705b81605b10bChris Lattner // ignored). 466a9d9145741ef77db45890911674705b81605b10bChris Lattner // FIXME: 'lib' requires a comment string. 467a9d9145741ef77db45890911674705b81605b10bChris Lattner // FIXME: 'linker' requires a comment string, and has a specific list of 468a9d9145741ef77db45890911674705b81605b10bChris Lattner // things that are allowable. 4691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 470636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner if (Tok.isNot(tok::r_paren)) { 471636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner Diag(Tok.getLocation(), diag::err_pragma_comment_malformed); 472636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner return; 473636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner } 474a9d9145741ef77db45890911674705b81605b10bChris Lattner Lex(Tok); // eat the r_paren. 475636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner 476636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner if (Tok.isNot(tok::eom)) { 477636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner Diag(Tok.getLocation(), diag::err_pragma_comment_malformed); 478636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner return; 479636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner } 4801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 481a9d9145741ef77db45890911674705b81605b10bChris Lattner // If the pragma is lexically sound, notify any interested PPCallbacks. 482172e336b12fa32a1737f66d77a3f2de86f9cc8e8Chris Lattner if (Callbacks) 483172e336b12fa32a1737f66d77a3f2de86f9cc8e8Chris Lattner Callbacks->PragmaComment(CommentLoc, II, ArgumentString); 484636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner} 485636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner 486301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer/// HandlePragmaMessage - Handle the microsoft and gcc #pragma message 487301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer/// extension. The syntax is: 488301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer/// #pragma message(string) 489301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer/// OR, in GCC mode: 490301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer/// #pragma message string 491301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer/// string is a string, which is fully macro expanded, and permits string 492301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer/// concatenation, embedded escape characters, etc... See MSDN for more details. 493abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattnervoid Preprocessor::HandlePragmaMessage(Token &Tok) { 494abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner SourceLocation MessageLoc = Tok.getLocation(); 495abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner Lex(Tok); 496301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer bool ExpectClosingParen = false; 497d83fc546a4351df49a8d106daaecb959e7278a86Michael J. Spencer switch (Tok.getKind()) { 498301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer case tok::l_paren: 499301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer // We have a MSVC style pragma message. 500301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer ExpectClosingParen = true; 501301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer // Read the string. 502301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer Lex(Tok); 503301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer break; 504301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer case tok::string_literal: 505301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer // We have a GCC style pragma message, and we just read the string. 506301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer break; 507301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer default: 508abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner Diag(MessageLoc, diag::err_pragma_message_malformed); 509abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner return; 510abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner } 511abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner 512abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner // We need at least one string. 513abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner if (Tok.isNot(tok::string_literal)) { 514abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner Diag(Tok.getLocation(), diag::err_pragma_message_malformed); 515abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner return; 516abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner } 517abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner 518abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner // String concatenation allows multiple strings, which can even come from 519abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner // macro expansion. 520abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner // "foo " "bar" "Baz" 521abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner llvm::SmallVector<Token, 4> StrToks; 522abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner while (Tok.is(tok::string_literal)) { 523abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner StrToks.push_back(Tok); 524abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner Lex(Tok); 525abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner } 526abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner 527abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner // Concatenate and parse the strings. 528abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner StringLiteralParser Literal(&StrToks[0], StrToks.size(), *this); 529abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner assert(!Literal.AnyWide && "Didn't allow wide strings in"); 530abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner if (Literal.hadError) 531abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner return; 532abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner if (Literal.Pascal) { 533abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner Diag(StrToks[0].getLocation(), diag::err_pragma_message_malformed); 534abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner return; 535abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner } 536abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner 537abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner llvm::StringRef MessageString(Literal.GetString(), Literal.GetStringLength()); 538636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner 539301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer if (ExpectClosingParen) { 540301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer if (Tok.isNot(tok::r_paren)) { 541301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer Diag(Tok.getLocation(), diag::err_pragma_message_malformed); 542301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer return; 543301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer } 544301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer Lex(Tok); // eat the r_paren. 545abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner } 546abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner 547abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner if (Tok.isNot(tok::eom)) { 548abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner Diag(Tok.getLocation(), diag::err_pragma_message_malformed); 549abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner return; 550abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner } 551abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner 552abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner // Output the message. 553abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner Diag(MessageLoc, diag::warn_pragma_message) << MessageString; 554abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner 555abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner // If the pragma is lexically sound, notify any interested PPCallbacks. 556abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner if (Callbacks) 557abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner Callbacks->PragmaMessage(MessageLoc, MessageString); 558abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner} 559636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner 560f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// ParsePragmaPushOrPopMacro - Handle parsing of pragma push_macro/pop_macro. 561f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// Return the IdentifierInfo* associated with the macro to push or pop. 562f47724bf78299c7a50f008e0443c5f9f9f279ddcChris LattnerIdentifierInfo *Preprocessor::ParsePragmaPushOrPopMacro(Token &Tok) { 563f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Remember the pragma token location. 564f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner Token PragmaTok = Tok; 565f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 566f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Read the '('. 567f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner Lex(Tok); 568f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner if (Tok.isNot(tok::l_paren)) { 569f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner Diag(PragmaTok.getLocation(), diag::err_pragma_push_pop_macro_malformed) 570f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner << getSpelling(PragmaTok); 571f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner return 0; 572f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner } 573f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 574f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Read the macro name string. 575f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner Lex(Tok); 576f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner if (Tok.isNot(tok::string_literal)) { 577f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner Diag(PragmaTok.getLocation(), diag::err_pragma_push_pop_macro_malformed) 578f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner << getSpelling(PragmaTok); 579f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner return 0; 580f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner } 581f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 582f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Remember the macro string. 583f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner std::string StrVal = getSpelling(Tok); 584f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 585f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Read the ')'. 586f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner Lex(Tok); 587f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner if (Tok.isNot(tok::r_paren)) { 588f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner Diag(PragmaTok.getLocation(), diag::err_pragma_push_pop_macro_malformed) 589f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner << getSpelling(PragmaTok); 590f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner return 0; 591f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner } 592f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 593f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner assert(StrVal[0] == '"' && StrVal[StrVal.size()-1] == '"' && 594f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner "Invalid string token!"); 595f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 596f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Create a Token from the string. 597f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner Token MacroTok; 598f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner MacroTok.startToken(); 599f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner MacroTok.setKind(tok::identifier); 600f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner CreateString(&StrVal[1], StrVal.size() - 2, MacroTok); 601f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 602f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Get the IdentifierInfo of MacroToPushTok. 603f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner return LookUpIdentifierInfo(MacroTok); 604f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner} 605f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 606f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// HandlePragmaPushMacro - Handle #pragma push_macro. 607f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// The syntax is: 608f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// #pragma push_macro("macro") 609f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattnervoid Preprocessor::HandlePragmaPushMacro(Token &PushMacroTok) { 610f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Parse the pragma directive and get the macro IdentifierInfo*. 611f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner IdentifierInfo *IdentInfo = ParsePragmaPushOrPopMacro(PushMacroTok); 612f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner if (!IdentInfo) return; 613f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 614f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Get the MacroInfo associated with IdentInfo. 615f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner MacroInfo *MI = getMacroInfo(IdentInfo); 616f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 617f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner MacroInfo *MacroCopyToPush = 0; 618f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner if (MI) { 619f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Make a clone of MI. 620f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner MacroCopyToPush = CloneMacroInfo(*MI); 621f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 622f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Allow the original MacroInfo to be redefined later. 623f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner MI->setIsAllowRedefinitionsWithoutWarning(true); 624f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner } 625f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 626f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Push the cloned MacroInfo so we can retrieve it later. 627f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner PragmaPushMacroInfo[IdentInfo].push_back(MacroCopyToPush); 628f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner} 629f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 630f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// HandlePragmaPopMacro - Handle #pragma push_macro. 631f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// The syntax is: 632f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// #pragma pop_macro("macro") 633f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattnervoid Preprocessor::HandlePragmaPopMacro(Token &PopMacroTok) { 634f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner SourceLocation MessageLoc = PopMacroTok.getLocation(); 635f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 636f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Parse the pragma directive and get the macro IdentifierInfo*. 637f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner IdentifierInfo *IdentInfo = ParsePragmaPushOrPopMacro(PopMacroTok); 638f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner if (!IdentInfo) return; 639f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 640f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Find the vector<MacroInfo*> associated with the macro. 641f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner llvm::DenseMap<IdentifierInfo*, std::vector<MacroInfo*> >::iterator iter = 642f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner PragmaPushMacroInfo.find(IdentInfo); 643f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner if (iter != PragmaPushMacroInfo.end()) { 644f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Release the MacroInfo currently associated with IdentInfo. 645f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner MacroInfo *CurrentMI = getMacroInfo(IdentInfo); 646f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner if (CurrentMI) ReleaseMacroInfo(CurrentMI); 647f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 648f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Get the MacroInfo we want to reinstall. 649f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner MacroInfo *MacroToReInstall = iter->second.back(); 650f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 651f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Reinstall the previously pushed macro. 652f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner setMacroInfo(IdentInfo, MacroToReInstall); 653f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 654f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Pop PragmaPushMacroInfo stack. 655f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner iter->second.pop_back(); 656f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner if (iter->second.size() == 0) 657f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner PragmaPushMacroInfo.erase(iter); 658f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner } else { 659f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner Diag(MessageLoc, diag::warn_pragma_pop_macro_no_push) 660f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner << IdentInfo->getName(); 661f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner } 662f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner} 6635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// AddPragmaHandler - Add the specified pragma handler to the preprocessor. 6655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// If 'Namespace' is non-null, then it is a token required to exist on the 6665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// pragma line before the pragma string starts, e.g. "STDC" or "GCC". 6679b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidisvoid Preprocessor::AddPragmaHandler(llvm::StringRef Namespace, 6685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PragmaHandler *Handler) { 6695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PragmaNamespace *InsertNS = PragmaHandlers; 6701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If this is specified to be in a namespace, step down into it. 6729b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis if (!Namespace.empty()) { 6735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If there is already a pragma handler with the name of this namespace, 6745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // we either have an error (directive with the same name as a namespace) or 6755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // we already have the namespace to insert into. 6769b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis if (PragmaHandler *Existing = PragmaHandlers->FindHandler(Namespace)) { 6775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer InsertNS = Existing->getIfNamespace(); 6785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(InsertNS != 0 && "Cannot have a pragma namespace and pragma" 6795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer " handler with the same name!"); 6805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } else { 6815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Otherwise, this namespace doesn't exist yet, create and insert the 6825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // handler for it. 6839b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis InsertNS = new PragmaNamespace(Namespace); 6845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PragmaHandlers->AddPragma(InsertNS); 6855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 6865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 6871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Check to make sure we don't already have a pragma for this identifier. 6895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(!InsertNS->FindHandler(Handler->getName()) && 6905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer "Pragma handler already exists for this identifier!"); 6915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer InsertNS->AddPragma(Handler); 6925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 6935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6944095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar/// RemovePragmaHandler - Remove the specific pragma handler from the 6954095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar/// preprocessor. If \arg Namespace is non-null, then it should be the 6964095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar/// namespace that \arg Handler was added to. It is an error to remove 6974095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar/// a handler that has not been registered. 6989b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidisvoid Preprocessor::RemovePragmaHandler(llvm::StringRef Namespace, 6994095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar PragmaHandler *Handler) { 7004095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar PragmaNamespace *NS = PragmaHandlers; 7011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7024095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar // If this is specified to be in a namespace, step down into it. 7039b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis if (!Namespace.empty()) { 7049b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaHandler *Existing = PragmaHandlers->FindHandler(Namespace); 7054095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar assert(Existing && "Namespace containing handler does not exist!"); 7064095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar 7074095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar NS = Existing->getIfNamespace(); 7084095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar assert(NS && "Invalid namespace, registered as a regular pragma handler!"); 7094095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar } 7104095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar 7114095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar NS->RemovePragmaHandler(Handler); 7121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7134095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar // If this is a non-default namespace and it is now empty, remove 7144095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar // it. 7154095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar if (NS != PragmaHandlers && NS->IsEmpty()) 7164095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar PragmaHandlers->RemovePragmaHandler(NS); 7174095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar} 7184095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar 7195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencernamespace { 7202243449253475574fc6f14986ff8f7fce5d46799Chris Lattner/// PragmaOnceHandler - "#pragma once" marks the file as atomically included. 7215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerstruct PragmaOnceHandler : public PragmaHandler { 7229b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaOnceHandler() : PragmaHandler("once") {} 72380c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 72480c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &OnceTok) { 72535410d5cbbb18735d76e00496540d416dc49b577Chris Lattner PP.CheckEndOfDirective("pragma once"); 7265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PP.HandlePragmaOnce(OnceTok); 7275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 7295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7302243449253475574fc6f14986ff8f7fce5d46799Chris Lattner/// PragmaMarkHandler - "#pragma mark ..." is ignored by the compiler, and the 7312243449253475574fc6f14986ff8f7fce5d46799Chris Lattner/// rest of the line is not lexed. 7322243449253475574fc6f14986ff8f7fce5d46799Chris Lattnerstruct PragmaMarkHandler : public PragmaHandler { 7339b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaMarkHandler() : PragmaHandler("mark") {} 73480c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 73580c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &MarkTok) { 7362243449253475574fc6f14986ff8f7fce5d46799Chris Lattner PP.HandlePragmaMark(); 7372243449253475574fc6f14986ff8f7fce5d46799Chris Lattner } 7382243449253475574fc6f14986ff8f7fce5d46799Chris Lattner}; 7392243449253475574fc6f14986ff8f7fce5d46799Chris Lattner 7402243449253475574fc6f14986ff8f7fce5d46799Chris Lattner/// PragmaPoisonHandler - "#pragma poison x" marks x as not usable. 7415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerstruct PragmaPoisonHandler : public PragmaHandler { 7429b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaPoisonHandler() : PragmaHandler("poison") {} 74380c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 74480c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &PoisonTok) { 7455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PP.HandlePragmaPoison(PoisonTok); 7465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 7485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7492243449253475574fc6f14986ff8f7fce5d46799Chris Lattner/// PragmaSystemHeaderHandler - "#pragma system_header" marks the current file 7502243449253475574fc6f14986ff8f7fce5d46799Chris Lattner/// as a system header, which silences warnings in it. 7515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerstruct PragmaSystemHeaderHandler : public PragmaHandler { 7529b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaSystemHeaderHandler() : PragmaHandler("system_header") {} 75380c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 75480c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &SHToken) { 7555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PP.HandlePragmaSystemHeader(SHToken); 75635410d5cbbb18735d76e00496540d416dc49b577Chris Lattner PP.CheckEndOfDirective("pragma"); 7575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 7595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerstruct PragmaDependencyHandler : public PragmaHandler { 7609b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaDependencyHandler() : PragmaHandler("dependency") {} 76180c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 76280c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &DepToken) { 7635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PP.HandlePragmaDependency(DepToken); 7645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 7661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 767abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbarstruct PragmaDebugHandler : public PragmaHandler { 768abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar PragmaDebugHandler() : PragmaHandler("__debug") {} 76980c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 77080c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &DepToken) { 771abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar Token Tok; 772abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar PP.LexUnexpandedToken(Tok); 773abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar if (Tok.isNot(tok::identifier)) { 7746493a4d7129673f7878da2382dedf4f9abc57e4cDouglas Gregor PP.Diag(Tok, diag::warn_pragma_diagnostic_invalid); 775abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar return; 776abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar } 777abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar IdentifierInfo *II = Tok.getIdentifierInfo(); 778abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar 7795505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar if (II->isStr("assert")) { 7805505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar assert(0 && "This is an assertion!"); 781abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar } else if (II->isStr("crash")) { 7825505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar *(volatile int*) 0x11 = 0; 7835505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar } else if (II->isStr("llvm_fatal_error")) { 7845505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar llvm::report_fatal_error("#pragma clang __debug llvm_fatal_error"); 7855505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar } else if (II->isStr("llvm_unreachable")) { 7865505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar llvm_unreachable("#pragma clang __debug llvm_unreachable"); 7875505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar } else if (II->isStr("overflow_stack")) { 7885505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar DebugOverflowStack(); 789ff759a66526d6a985fb4efae69c6b798d83364dfDaniel Dunbar } else if (II->isStr("handle_crash")) { 790ff759a66526d6a985fb4efae69c6b798d83364dfDaniel Dunbar llvm::CrashRecoveryContext *CRC =llvm::CrashRecoveryContext::GetCurrent(); 791ff759a66526d6a985fb4efae69c6b798d83364dfDaniel Dunbar if (CRC) 792ff759a66526d6a985fb4efae69c6b798d83364dfDaniel Dunbar CRC->HandleCrash(); 7935505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar } else { 7945505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar PP.Diag(Tok, diag::warn_pragma_debug_unexpected_command) 7955505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar << II->getName(); 796abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar } 797abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar } 798abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar 799abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar void DebugOverflowStack() { 800abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar DebugOverflowStack(); 801abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar } 802abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar}; 803abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar 804edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner/// PragmaDiagnosticHandler - e.g. '#pragma GCC diagnostic ignored "-Wformat"' 805edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattnerstruct PragmaDiagnosticHandler : public PragmaHandler { 80604ae2df026b275aae5dddfc0db5ca55ff4e62179Chris Lattnerpublic: 8076493a4d7129673f7878da2382dedf4f9abc57e4cDouglas Gregor explicit PragmaDiagnosticHandler() : PragmaHandler("diagnostic") {} 80880c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 80980c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &DiagToken) { 810edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner Token Tok; 811edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner PP.LexUnexpandedToken(Tok); 812edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner if (Tok.isNot(tok::identifier)) { 8136493a4d7129673f7878da2382dedf4f9abc57e4cDouglas Gregor PP.Diag(Tok, diag::warn_pragma_diagnostic_invalid); 814edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner return; 815edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner } 816edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner IdentifierInfo *II = Tok.getIdentifierInfo(); 8171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 818edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner diag::Mapping Map; 819edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner if (II->isStr("warning")) 820edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner Map = diag::MAP_WARNING; 821edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner else if (II->isStr("error")) 822edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner Map = diag::MAP_ERROR; 823edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner else if (II->isStr("ignored")) 824edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner Map = diag::MAP_IGNORE; 825edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner else if (II->isStr("fatal")) 826edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner Map = diag::MAP_FATAL; 8276493a4d7129673f7878da2382dedf4f9abc57e4cDouglas Gregor else if (II->isStr("pop")) { 8286493a4d7129673f7878da2382dedf4f9abc57e4cDouglas Gregor if (!PP.getDiagnostics().popMappings()) 8296493a4d7129673f7878da2382dedf4f9abc57e4cDouglas Gregor PP.Diag(Tok, diag::warn_pragma_diagnostic_cannot_pop); 8306493a4d7129673f7878da2382dedf4f9abc57e4cDouglas Gregor 8316493a4d7129673f7878da2382dedf4f9abc57e4cDouglas Gregor return; 8326493a4d7129673f7878da2382dedf4f9abc57e4cDouglas Gregor } else if (II->isStr("push")) { 8336493a4d7129673f7878da2382dedf4f9abc57e4cDouglas Gregor PP.getDiagnostics().pushMappings(); 83404ae2df026b275aae5dddfc0db5ca55ff4e62179Chris Lattner return; 83504ae2df026b275aae5dddfc0db5ca55ff4e62179Chris Lattner } else { 8366493a4d7129673f7878da2382dedf4f9abc57e4cDouglas Gregor PP.Diag(Tok, diag::warn_pragma_diagnostic_invalid); 837edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner return; 838edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner } 8391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 840edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner PP.LexUnexpandedToken(Tok); 841edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner 842edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner // We need at least one string. 843edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner if (Tok.isNot(tok::string_literal)) { 844edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner PP.Diag(Tok.getLocation(), diag::warn_pragma_diagnostic_invalid_token); 845edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner return; 846edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner } 8471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 848edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner // String concatenation allows multiple strings, which can even come from 849edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner // macro expansion. 850edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner // "foo " "bar" "Baz" 851edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner llvm::SmallVector<Token, 4> StrToks; 852edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner while (Tok.is(tok::string_literal)) { 853edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner StrToks.push_back(Tok); 854edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner PP.LexUnexpandedToken(Tok); 855edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner } 8561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 857edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner if (Tok.isNot(tok::eom)) { 858edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner PP.Diag(Tok.getLocation(), diag::warn_pragma_diagnostic_invalid_token); 859edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner return; 860edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner } 8611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 862edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner // Concatenate and parse the strings. 863edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner StringLiteralParser Literal(&StrToks[0], StrToks.size(), PP); 864edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner assert(!Literal.AnyWide && "Didn't allow wide strings in"); 865edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner if (Literal.hadError) 866edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner return; 867edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner if (Literal.Pascal) { 8686493a4d7129673f7878da2382dedf4f9abc57e4cDouglas Gregor PP.Diag(Tok, diag::warn_pragma_diagnostic_invalid); 869edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner return; 870edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner } 87104ae2df026b275aae5dddfc0db5ca55ff4e62179Chris Lattner 872edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner std::string WarningName(Literal.GetString(), 873edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner Literal.GetString()+Literal.GetStringLength()); 874edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner 875edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner if (WarningName.size() < 3 || WarningName[0] != '-' || 876edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner WarningName[1] != 'W') { 877edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner PP.Diag(StrToks[0].getLocation(), 878edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner diag::warn_pragma_diagnostic_invalid_option); 879edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner return; 880edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner } 8811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 882edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner if (PP.getDiagnostics().setDiagnosticGroupMapping(WarningName.c_str()+2, 883edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner Map)) 884edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner PP.Diag(StrToks[0].getLocation(), 885edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner diag::warn_pragma_diagnostic_unknown_warning) << WarningName; 886edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner } 887edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner}; 8881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 889636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner/// PragmaCommentHandler - "#pragma comment ...". 890636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattnerstruct PragmaCommentHandler : public PragmaHandler { 8919b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaCommentHandler() : PragmaHandler("comment") {} 89280c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 89380c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &CommentTok) { 894636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner PP.HandlePragmaComment(CommentTok); 895636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner } 896636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner}; 8971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 898abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner/// PragmaMessageHandler - "#pragma message("...")". 899abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattnerstruct PragmaMessageHandler : public PragmaHandler { 9009b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaMessageHandler() : PragmaHandler("message") {} 90180c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 90280c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &CommentTok) { 903abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner PP.HandlePragmaMessage(CommentTok); 904abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner } 905abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner}; 906abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner 907f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// PragmaPushMacroHandler - "#pragma push_macro" saves the value of the 908f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// macro on the top of the stack. 909f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattnerstruct PragmaPushMacroHandler : public PragmaHandler { 910f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner PragmaPushMacroHandler() : PragmaHandler("push_macro") {} 91180c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 91280c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &PushMacroTok) { 913f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner PP.HandlePragmaPushMacro(PushMacroTok); 914f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner } 915f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner}; 916f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 917f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 918f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// PragmaPopMacroHandler - "#pragma pop_macro" sets the value of the 919f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// macro to the value on the top of the stack. 920f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattnerstruct PragmaPopMacroHandler : public PragmaHandler { 921f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner PragmaPopMacroHandler() : PragmaHandler("pop_macro") {} 92280c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 92380c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &PopMacroTok) { 924f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner PP.HandlePragmaPopMacro(PopMacroTok); 925f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner } 926f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner}; 927f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 928062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner// Pragma STDC implementations. 9296c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner 9306c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattnerenum STDCSetting { 9316c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner STDC_ON, STDC_OFF, STDC_DEFAULT, STDC_INVALID 9326c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner}; 9331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9346c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattnerstatic STDCSetting LexOnOffSwitch(Preprocessor &PP) { 9356c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner Token Tok; 9366c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner PP.LexUnexpandedToken(Tok); 9376c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner 9386c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner if (Tok.isNot(tok::identifier)) { 9396c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner PP.Diag(Tok, diag::ext_stdc_pragma_syntax); 9406c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner return STDC_INVALID; 9416c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner } 9426c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner IdentifierInfo *II = Tok.getIdentifierInfo(); 9436c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner STDCSetting Result; 9446c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner if (II->isStr("ON")) 9456c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner Result = STDC_ON; 9466c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner else if (II->isStr("OFF")) 9476c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner Result = STDC_OFF; 9486c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner else if (II->isStr("DEFAULT")) 9496c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner Result = STDC_DEFAULT; 9506c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner else { 9516c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner PP.Diag(Tok, diag::ext_stdc_pragma_syntax); 9526c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner return STDC_INVALID; 9536c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner } 9546c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner 9556c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner // Verify that this is followed by EOM. 9566c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner PP.LexUnexpandedToken(Tok); 9576c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner if (Tok.isNot(tok::eom)) 9586c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner PP.Diag(Tok, diag::ext_stdc_pragma_syntax_eom); 9596c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner return Result; 9606c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner} 9611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 962062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner/// PragmaSTDC_FP_CONTRACTHandler - "#pragma STDC FP_CONTRACT ...". 963062f23246510393c19b537b68ec88b6a08ee8996Chris Lattnerstruct PragmaSTDC_FP_CONTRACTHandler : public PragmaHandler { 9649b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaSTDC_FP_CONTRACTHandler() : PragmaHandler("FP_CONTRACT") {} 96580c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 96680c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &Tok) { 9676c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner // We just ignore the setting of FP_CONTRACT. Since we don't do contractions 9686c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner // at all, our default is OFF and setting it to ON is an optimization hint 9696c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner // we can safely ignore. When we support -ffma or something, we would need 9706c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner // to diagnose that we are ignoring FMA. 9716c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner LexOnOffSwitch(PP); 972062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner } 973062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner}; 9741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 975062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner/// PragmaSTDC_FENV_ACCESSHandler - "#pragma STDC FENV_ACCESS ...". 976062f23246510393c19b537b68ec88b6a08ee8996Chris Lattnerstruct PragmaSTDC_FENV_ACCESSHandler : public PragmaHandler { 9779b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaSTDC_FENV_ACCESSHandler() : PragmaHandler("FENV_ACCESS") {} 97880c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 97980c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &Tok) { 9804d8aac3778b40c161bed9964125948ee01c08821Chris Lattner if (LexOnOffSwitch(PP) == STDC_ON) 9814d8aac3778b40c161bed9964125948ee01c08821Chris Lattner PP.Diag(Tok, diag::warn_stdc_fenv_access_not_supported); 982062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner } 983062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner}; 9841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 985062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner/// PragmaSTDC_CX_LIMITED_RANGEHandler - "#pragma STDC CX_LIMITED_RANGE ...". 986062f23246510393c19b537b68ec88b6a08ee8996Chris Lattnerstruct PragmaSTDC_CX_LIMITED_RANGEHandler : public PragmaHandler { 9879b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaSTDC_CX_LIMITED_RANGEHandler() 9889b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis : PragmaHandler("CX_LIMITED_RANGE") {} 98980c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 99080c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &Tok) { 9916c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner LexOnOffSwitch(PP); 992062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner } 993062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner}; 9941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 995062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner/// PragmaSTDC_UnknownHandler - "#pragma STDC ...". 996062f23246510393c19b537b68ec88b6a08ee8996Chris Lattnerstruct PragmaSTDC_UnknownHandler : public PragmaHandler { 9979b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaSTDC_UnknownHandler() {} 99880c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer, 99980c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor Token &UnknownTok) { 10006c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner // C99 6.10.6p2, unknown forms are not allowed. 1001f545be5552b6fd40a4c766fbf82dab0ab5305790Chris Lattner PP.Diag(UnknownTok, diag::ext_stdc_pragma_ignored); 1002062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner } 1003062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner}; 10041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} // end anonymous namespace 10065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 10075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 10085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// RegisterBuiltinPragmas - Install the standard preprocessor pragmas: 10095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// #pragma GCC poison/system_header/dependency and #pragma once. 10105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencervoid Preprocessor::RegisterBuiltinPragmas() { 10119b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler(new PragmaOnceHandler()); 10129b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler(new PragmaMarkHandler()); 1013f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner AddPragmaHandler(new PragmaPushMacroHandler()); 1014f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner AddPragmaHandler(new PragmaPopMacroHandler()); 1015301669b381dfead44bda5ea3211d69ffec5a530bMichael J. Spencer AddPragmaHandler(new PragmaMessageHandler()); 10161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1017e8fa06e07363b6d5e6c371bbd454d51bab78d01dChris Lattner // #pragma GCC ... 10189b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler("GCC", new PragmaPoisonHandler()); 10199b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler("GCC", new PragmaSystemHeaderHandler()); 10209b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler("GCC", new PragmaDependencyHandler()); 10216493a4d7129673f7878da2382dedf4f9abc57e4cDouglas Gregor AddPragmaHandler("GCC", new PragmaDiagnosticHandler()); 1022e8fa06e07363b6d5e6c371bbd454d51bab78d01dChris Lattner // #pragma clang ... 10239b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler("clang", new PragmaPoisonHandler()); 10249b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler("clang", new PragmaSystemHeaderHandler()); 1025abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar AddPragmaHandler("clang", new PragmaDebugHandler()); 10269b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler("clang", new PragmaDependencyHandler()); 10276493a4d7129673f7878da2382dedf4f9abc57e4cDouglas Gregor AddPragmaHandler("clang", new PragmaDiagnosticHandler()); 10289b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis 10299b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler("STDC", new PragmaSTDC_FP_CONTRACTHandler()); 10309b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler("STDC", new PragmaSTDC_FENV_ACCESSHandler()); 10319b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler("STDC", new PragmaSTDC_CX_LIMITED_RANGEHandler()); 1032062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner AddPragmaHandler("STDC", new PragmaSTDC_UnknownHandler()); 10331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1034636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner // MS extensions. 1035abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner if (Features.Microsoft) { 10369b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler(new PragmaCommentHandler()); 1037abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner } 10385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 1039