Pragma.cpp revision 1ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7
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 38c72cc5072cdc1a1a6e05f9d0f962f293a69248c4Daniel Dunbarvoid EmptyPragmaHandler::HandlePragma(Preprocessor &PP, Token &FirstToken) {} 39c72cc5072cdc1a1a6e05f9d0f962f293a69248c4Daniel Dunbar 40c72cc5072cdc1a1a6e05f9d0f962f293a69248c4Daniel Dunbar//===----------------------------------------------------------------------===// 415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// PragmaNamespace Implementation. 425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid SpencerPragmaNamespace::~PragmaNamespace() { 469b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis for (llvm::StringMap<PragmaHandler*>::iterator 479b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis I = Handlers.begin(), E = Handlers.end(); I != E; ++I) 489b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis delete I->second; 495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// FindHandler - Check to see if there is already a handler for the 525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// specified name. If not, return the handler for the null identifier if it 535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// exists, otherwise return null. If IgnoreNull is true (the default) then 545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// the null handler isn't returned on failure to match. 559b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios KyrtzidisPragmaHandler *PragmaNamespace::FindHandler(llvm::StringRef Name, 565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool IgnoreNull) const { 579b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis if (PragmaHandler *Handler = Handlers.lookup(Name)) 589b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis return Handler; 599b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis return IgnoreNull ? 0 : Handlers.lookup(llvm::StringRef()); 609b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis} 611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 629b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidisvoid PragmaNamespace::AddPragma(PragmaHandler *Handler) { 639b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis assert(!Handlers.lookup(Handler->getName()) && 649b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis "A handler with this name is already registered in this namespace"); 659b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis llvm::StringMapEntry<PragmaHandler *> &Entry = 669b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis Handlers.GetOrCreateValue(Handler->getName()); 679b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis Entry.setValue(Handler); 685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 704095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbarvoid PragmaNamespace::RemovePragmaHandler(PragmaHandler *Handler) { 719b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis assert(Handlers.lookup(Handler->getName()) && 729b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis "Handler not registered in this namespace"); 739b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis Handlers.erase(Handler->getName()); 744095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar} 754095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar 76d217773f106856a11879ec79dc468efefaf2ee75Chris Lattnervoid PragmaNamespace::HandlePragma(Preprocessor &PP, Token &Tok) { 775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Read the 'namespace' that the directive is in, e.g. STDC. Do not macro 785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // expand it, the user can have a STDC #define, that should not affect this. 795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PP.LexUnexpandedToken(Tok); 801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Get the handler for this token. If there is no handler, ignore the pragma. 829b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaHandler *Handler 839b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis = FindHandler(Tok.getIdentifierInfo() ? Tok.getIdentifierInfo()->getName() 849b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis : llvm::StringRef(), 859b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis /*IgnoreNull=*/false); 86af7cdf45da4925f788e87a4c318ee67404646088Chris Lattner if (Handler == 0) { 87af7cdf45da4925f788e87a4c318ee67404646088Chris Lattner PP.Diag(Tok, diag::warn_pragma_ignored); 88af7cdf45da4925f788e87a4c318ee67404646088Chris Lattner return; 89af7cdf45da4925f788e87a4c318ee67404646088Chris Lattner } 901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Otherwise, pass it down. 925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Handler->HandlePragma(PP, Tok); 935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// Preprocessor Pragma Directive Handling. 975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// HandlePragmaDirective - The "#pragma" directive has been parsed. Lex the 1005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// rest of the pragma, passing it to the registered pragma handlers. 1015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencervoid Preprocessor::HandlePragmaDirective() { 1025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ++NumPragma; 1031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Invoke the first level of pragma handlers which reads the namespace id. 105d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner Token Tok; 1065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PragmaHandlers->HandlePragma(*this, Tok); 1071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If the pragma handler didn't read the rest of the line, consume it now. 109027cff63321262a5a85a402c39aac06ee66c745dChris Lattner if (CurPPLexer && CurPPLexer->ParsingPreprocessorDirective) 1105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DiscardUntilEndOfDirective(); 1115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 1125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// Handle_Pragma - Read a _Pragma directive, slice it up, process it, then 1145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// return the first token after the directive. The _Pragma token has just 1155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// been read into 'Tok'. 116d217773f106856a11879ec79dc468efefaf2ee75Chris Lattnervoid Preprocessor::Handle_Pragma(Token &Tok) { 1175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Remember the pragma token location. 1185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation PragmaLoc = Tok.getLocation(); 1191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Read the '('. 1215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Lex(Tok); 1223692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner if (Tok.isNot(tok::l_paren)) { 1233692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner Diag(PragmaLoc, diag::err__Pragma_malformed); 1243692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner return; 1253692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner } 1265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Read the '"..."'. 1285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Lex(Tok); 1293692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner if (Tok.isNot(tok::string_literal) && Tok.isNot(tok::wide_string_literal)) { 1303692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner Diag(PragmaLoc, diag::err__Pragma_malformed); 1313692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner return; 1323692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner } 1331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Remember the string. 1355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer std::string StrVal = getSpelling(Tok); 1365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Read the ')'. 1385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Lex(Tok); 1393692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner if (Tok.isNot(tok::r_paren)) { 1403692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner Diag(PragmaLoc, diag::err__Pragma_malformed); 1413692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner return; 1423692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner } 1431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 144e7fb48466afcbf2c4ccdfa658824282fdc3c512cChris Lattner SourceLocation RParenLoc = Tok.getLocation(); 1451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 146a9d9145741ef77db45890911674705b81605b10bChris Lattner // The _Pragma is lexically sound. Destringize according to C99 6.10.9.1: 147a9d9145741ef77db45890911674705b81605b10bChris Lattner // "The string literal is destringized by deleting the L prefix, if present, 148a9d9145741ef77db45890911674705b81605b10bChris Lattner // deleting the leading and trailing double-quotes, replacing each escape 149a9d9145741ef77db45890911674705b81605b10bChris Lattner // sequence \" by a double-quote, and replacing each escape sequence \\ by a 150a9d9145741ef77db45890911674705b81605b10bChris Lattner // single backslash." 1515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (StrVal[0] == 'L') // Remove L prefix. 1525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer StrVal.erase(StrVal.begin()); 1535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(StrVal[0] == '"' && StrVal[StrVal.size()-1] == '"' && 1545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer "Invalid string token!"); 1551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Remove the front quote, replacing it with a space, so that the pragma 1575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // contents appear to have a space before them. 1585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer StrVal[0] = ' '; 1591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1601fa495304c81e03f07f278a47b5efe9317104aabChris Lattner // Replace the terminating quote with a \n. 1615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer StrVal[StrVal.size()-1] = '\n'; 1621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Remove escaped quotes and escapes. 1645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer for (unsigned i = 0, e = StrVal.size(); i != e-1; ++i) { 1655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (StrVal[i] == '\\' && 1665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer (StrVal[i+1] == '\\' || StrVal[i+1] == '"')) { 1675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // \\ -> '\' and \" -> '"'. 1685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer StrVal.erase(StrVal.begin()+i); 1695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer --e; 1705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1721ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 1731ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall Handle_Pragma(StrVal, PragmaLoc, RParenLoc); 1741ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 1751ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall // Finally, return whatever came after the pragma directive. 1761ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall return Lex(Tok); 1771ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall} 1781ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 1791ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall/// HandleMicrosoft__pragma - Like Handle_Pragma except the pragma text 1801ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall/// is not enclosed within a string literal. 1811ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCallvoid Preprocessor::HandleMicrosoft__pragma(Token &Tok) { 1821ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall // Remember the pragma token location. 1831ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall SourceLocation PragmaLoc = Tok.getLocation(); 1841ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 1851ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall // Read the '('. 1861ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall Lex(Tok); 1871ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall if (Tok.isNot(tok::l_paren)) { 1881ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall Diag(PragmaLoc, diag::err__Pragma_malformed); 1891ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall return; 1901ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall } 1911ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 1921ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall // Get the tokens enclosed within the __pragma(). 1931ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall llvm::SmallVector<Token, 32> PragmaToks; 1941ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall int NumParens = 0; 1951ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall Lex(Tok); 1961ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall while (Tok.isNot(tok::eof)) { 1971ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall if (Tok.is(tok::l_paren)) 1981ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall NumParens++; 1991ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall else if (Tok.is(tok::r_paren) && NumParens-- == 0) 2001ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall break; 2011ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall PragmaToks.push_back(Tok); 2021ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall Lex(Tok); 2031ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall } 2041ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 2051ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall // Build the pragma string. 2061ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall std::string StrVal = " "; 2071ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall for (llvm::SmallVector<Token, 32>::iterator I = 2081ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall PragmaToks.begin(), E = PragmaToks.end(); I != E; ++I) { 2091ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall StrVal += getSpelling(*I); 2101ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall } 2111ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 2121ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall SourceLocation RParenLoc = Tok.getLocation(); 2131ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 2141ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall Handle_Pragma(StrVal, PragmaLoc, RParenLoc); 2151ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 2161ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall // Finally, return whatever came after the pragma directive. 2171ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall return Lex(Tok); 2181ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall} 2191ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 2201ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCallvoid Preprocessor::Handle_Pragma(const std::string &StrVal, 2211ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall SourceLocation PragmaLoc, 2221ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall SourceLocation RParenLoc) { 2231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Plop the string (including the newline and trailing null) into a buffer 2255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // where we can lex it. 22647246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner Token TmpTok; 22747246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner TmpTok.startToken(); 22847246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner CreateString(&StrVal[0], StrVal.size(), TmpTok); 22947246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner SourceLocation TokLoc = TmpTok.getLocation(); 2305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Make and enter a lexer object so that we lex and expand the tokens just 2325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // like any others. 233e7fb48466afcbf2c4ccdfa658824282fdc3c512cChris Lattner Lexer *TL = Lexer::Create_PragmaLexer(TokLoc, PragmaLoc, RParenLoc, 2341fa495304c81e03f07f278a47b5efe9317104aabChris Lattner StrVal.size(), *this); 2355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer EnterSourceFileWithLexer(TL, 0); 2375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // With everything set up, lex this as a #pragma directive. 2395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer HandlePragmaDirective(); 2405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 2415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// HandlePragmaOnce - Handle #pragma once. OnceTok is the 'once'. 2455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 246d217773f106856a11879ec79dc468efefaf2ee75Chris Lattnervoid Preprocessor::HandlePragmaOnce(Token &OnceTok) { 2475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (isInPrimaryFile()) { 2485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(OnceTok, diag::pp_pragma_once_in_main_file); 2495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return; 2505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Get the current file lexer we're looking at. Ignore _Pragma 'files' etc. 2535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Mark the file as a once-only file now. 2542b2453a7d8fe732561795431f39ceb2b2a832d84Chris Lattner HeaderInfo.MarkFileIncludeOnce(getCurrentFileLexer()->getFileEntry()); 2555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 2565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2572243449253475574fc6f14986ff8f7fce5d46799Chris Lattnervoid Preprocessor::HandlePragmaMark() { 25817ff58a63197b398ae52697b088dc0fb8b255519Ted Kremenek assert(CurPPLexer && "No current lexer?"); 2596896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner if (CurLexer) 2606896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner CurLexer->ReadToEndOfLine(); 2616896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner else 2626896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner CurPTHLexer->DiscardToEndOfLine(); 2632243449253475574fc6f14986ff8f7fce5d46799Chris Lattner} 2642243449253475574fc6f14986ff8f7fce5d46799Chris Lattner 2652243449253475574fc6f14986ff8f7fce5d46799Chris Lattner 2665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// HandlePragmaPoison - Handle #pragma GCC poison. PoisonTok is the 'poison'. 2675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 268d217773f106856a11879ec79dc468efefaf2ee75Chris Lattnervoid Preprocessor::HandlePragmaPoison(Token &PoisonTok) { 269d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner Token Tok; 2705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer while (1) { 2725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Read the next token to poison. While doing this, pretend that we are 2735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // skipping while reading the identifier to poison. 2745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // This avoids errors on code like: 2755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // #pragma GCC poison X 2765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // #pragma GCC poison X 27768a91d5736c2c03d60a9d1c59d08191b8e0d6c52Ted Kremenek if (CurPPLexer) CurPPLexer->LexingRawMode = true; 2785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer LexUnexpandedToken(Tok); 27968a91d5736c2c03d60a9d1c59d08191b8e0d6c52Ted Kremenek if (CurPPLexer) CurPPLexer->LexingRawMode = false; 2801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If we reached the end of line, we're done. 28222f6bbcafa8871f4f20c4402d9cbc5c024fee99aChris Lattner if (Tok.is(tok::eom)) return; 2831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Can only poison identifiers. 28522f6bbcafa8871f4f20c4402d9cbc5c024fee99aChris Lattner if (Tok.isNot(tok::identifier)) { 2865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(Tok, diag::err_pp_invalid_poison); 2875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return; 2885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Look up the identifier info for the token. We disabled identifier lookup 2915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // by saying we're skipping contents, so we need to do this manually. 2925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierInfo *II = LookUpIdentifierInfo(Tok); 2931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Already poisoned. 2955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (II->isPoisoned()) continue; 2961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If this is a macro identifier, emit a warning. 2980edde55077cc3cb9fffeba19f5936f05a68c8e2bChris Lattner if (II->hasMacroDefinition()) 2995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(Tok, diag::pp_poisoning_existing_macro); 3001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Finally, poison it! 3025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer II->setIsPoisoned(); 3035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 3045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 3055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// HandlePragmaSystemHeader - Implement #pragma GCC system_header. We know 3075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// that the whole directive has been parsed. 308d217773f106856a11879ec79dc468efefaf2ee75Chris Lattnervoid Preprocessor::HandlePragmaSystemHeader(Token &SysHeaderTok) { 3095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (isInPrimaryFile()) { 3105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(SysHeaderTok, diag::pp_pragma_sysheader_in_main_file); 3115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return; 3125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 3131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Get the current file lexer we're looking at. Ignore _Pragma 'files' etc. 31535c10c25ddec4effbd26dead23ea5b04ee32f45aTed Kremenek PreprocessorLexer *TheLexer = getCurrentFileLexer(); 3161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Mark the file as a system header. 3182b2453a7d8fe732561795431f39ceb2b2a832d84Chris Lattner HeaderInfo.MarkFileSystemHeader(TheLexer->getFileEntry()); 3191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3216896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner PresumedLoc PLoc = SourceMgr.getPresumedLoc(SysHeaderTok.getLocation()); 3226896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner unsigned FilenameLen = strlen(PLoc.getFilename()); 3236896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner unsigned FilenameID = SourceMgr.getLineTableFilenameID(PLoc.getFilename(), 3246896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner FilenameLen); 3251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3266896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner // Emit a line marker. This will change any source locations from this point 3276896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner // forward to realize they are in a system header. 3286896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner // Create a line note with this information. 3296896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner SourceMgr.AddLineNote(SysHeaderTok.getLocation(), PLoc.getLine(), FilenameID, 3306896a371e302c63ce3d4a99ad2c32e42dde6a9e4Chris Lattner false, false, true, false); 3311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Notify the client, if desired, that we are in a new source file. 3335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (Callbacks) 33435c10c25ddec4effbd26dead23ea5b04ee32f45aTed Kremenek Callbacks->FileChanged(SysHeaderTok.getLocation(), 3350b9e736308af5397f558ffc8e780c438c2fdb563Chris Lattner PPCallbacks::SystemHeaderPragma, SrcMgr::C_System); 3365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 3375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// HandlePragmaDependency - Handle #pragma GCC dependency "foo" blah. 3395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 340d217773f106856a11879ec79dc468efefaf2ee75Chris Lattnervoid Preprocessor::HandlePragmaDependency(Token &DependencyTok) { 341d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner Token FilenameTok; 34268a91d5736c2c03d60a9d1c59d08191b8e0d6c52Ted Kremenek CurPPLexer->LexIncludeFilename(FilenameTok); 3435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If the token kind is EOM, the error has already been diagnosed. 34522f6bbcafa8871f4f20c4402d9cbc5c024fee99aChris Lattner if (FilenameTok.is(tok::eom)) 3465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return; 3471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Reserve a buffer to get the spelling. 349a139481e62fdb209d9d87a54a5733f989d2e8d51Chris Lattner llvm::SmallString<128> FilenameBuffer; 350453091cc2082e207ea2c2dda645a9bc01b37fb0cDouglas Gregor bool Invalid = false; 351453091cc2082e207ea2c2dda645a9bc01b37fb0cDouglas Gregor llvm::StringRef Filename = getSpelling(FilenameTok, FilenameBuffer, &Invalid); 352453091cc2082e207ea2c2dda645a9bc01b37fb0cDouglas Gregor if (Invalid) 353453091cc2082e207ea2c2dda645a9bc01b37fb0cDouglas Gregor return; 3541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 355a139481e62fdb209d9d87a54a5733f989d2e8d51Chris Lattner bool isAngled = 356a139481e62fdb209d9d87a54a5733f989d2e8d51Chris Lattner GetIncludeFilenameSpelling(FilenameTok.getLocation(), Filename); 3575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If GetIncludeFilenameSpelling set the start ptr to null, there was an 3585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // error. 359a139481e62fdb209d9d87a54a5733f989d2e8d51Chris Lattner if (Filename.empty()) 3605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return; 3611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Search include directories for this file. 3635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const DirectoryLookup *CurDir; 364f45b646244705410866d62f1d8bf017a047ed662Chris Lattner const FileEntry *File = LookupFile(Filename, isAngled, 0, CurDir); 36556b05c8829efd13b7e5b333f8f587c71d025c67dChris Lattner if (File == 0) { 366a139481e62fdb209d9d87a54a5733f989d2e8d51Chris Lattner Diag(FilenameTok, diag::err_pp_file_not_found) << Filename; 36756b05c8829efd13b7e5b333f8f587c71d025c67dChris Lattner return; 36856b05c8829efd13b7e5b333f8f587c71d025c67dChris Lattner } 3691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3702b2453a7d8fe732561795431f39ceb2b2a832d84Chris Lattner const FileEntry *CurFile = getCurrentFileLexer()->getFileEntry(); 3715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If this file is older than the file it depends on, emit a diagnostic. 3735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (CurFile && CurFile->getModificationTime() < File->getModificationTime()) { 3745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Lex tokens at the end of the message and include them in the message. 3755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer std::string Message; 3765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Lex(DependencyTok); 37722f6bbcafa8871f4f20c4402d9cbc5c024fee99aChris Lattner while (DependencyTok.isNot(tok::eom)) { 3785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Message += getSpelling(DependencyTok) + " "; 3795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Lex(DependencyTok); 3805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 3811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Message.erase(Message.end()-1); 38356b05c8829efd13b7e5b333f8f587c71d025c67dChris Lattner Diag(FilenameTok, diag::pp_out_of_date_dependency) << Message; 3845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 3855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 3865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 387636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner/// HandlePragmaComment - Handle the microsoft #pragma comment extension. The 388636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner/// syntax is: 389636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner/// #pragma comment(linker, "foo") 390636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner/// 'linker' is one of five identifiers: compiler, exestr, lib, linker, user. 391636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner/// "foo" is a string, which is fully macro expanded, and permits string 392d7ee349f1dd84e023d09a35fb4d40c15888a55acGabor Greif/// concatenation, embedded escape characters etc. See MSDN for more details. 393636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattnervoid Preprocessor::HandlePragmaComment(Token &Tok) { 394636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner SourceLocation CommentLoc = Tok.getLocation(); 395636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner Lex(Tok); 396636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner if (Tok.isNot(tok::l_paren)) { 397636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner Diag(CommentLoc, diag::err_pragma_comment_malformed); 398636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner return; 399636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner } 4001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 401636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner // Read the identifier. 402636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner Lex(Tok); 403636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner if (Tok.isNot(tok::identifier)) { 404636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner Diag(CommentLoc, diag::err_pragma_comment_malformed); 405636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner return; 406636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner } 4071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 408636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner // Verify that this is one of the 5 whitelisted options. 409636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner // FIXME: warn that 'exestr' is deprecated. 410636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner const IdentifierInfo *II = Tok.getIdentifierInfo(); 4111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (!II->isStr("compiler") && !II->isStr("exestr") && !II->isStr("lib") && 412636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner !II->isStr("linker") && !II->isStr("user")) { 413636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner Diag(Tok.getLocation(), diag::err_pragma_comment_unknown_kind); 414636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner return; 415636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner } 4161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 417a9d9145741ef77db45890911674705b81605b10bChris Lattner // Read the optional string if present. 418636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner Lex(Tok); 419a9d9145741ef77db45890911674705b81605b10bChris Lattner std::string ArgumentString; 420636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner if (Tok.is(tok::comma)) { 421a9d9145741ef77db45890911674705b81605b10bChris Lattner Lex(Tok); // eat the comma. 422636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner 423636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner // We need at least one string. 424edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner if (Tok.isNot(tok::string_literal)) { 425636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner Diag(Tok.getLocation(), diag::err_pragma_comment_malformed); 426636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner return; 427636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner } 428636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner 429636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner // String concatenation allows multiple strings, which can even come from 430636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner // macro expansion. 431636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner // "foo " "bar" "Baz" 432a9d9145741ef77db45890911674705b81605b10bChris Lattner llvm::SmallVector<Token, 4> StrToks; 433edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner while (Tok.is(tok::string_literal)) { 434a9d9145741ef77db45890911674705b81605b10bChris Lattner StrToks.push_back(Tok); 435636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner Lex(Tok); 436a9d9145741ef77db45890911674705b81605b10bChris Lattner } 437a9d9145741ef77db45890911674705b81605b10bChris Lattner 438a9d9145741ef77db45890911674705b81605b10bChris Lattner // Concatenate and parse the strings. 439a9d9145741ef77db45890911674705b81605b10bChris Lattner StringLiteralParser Literal(&StrToks[0], StrToks.size(), *this); 440a9d9145741ef77db45890911674705b81605b10bChris Lattner assert(!Literal.AnyWide && "Didn't allow wide strings in"); 441a9d9145741ef77db45890911674705b81605b10bChris Lattner if (Literal.hadError) 442a9d9145741ef77db45890911674705b81605b10bChris Lattner return; 443a9d9145741ef77db45890911674705b81605b10bChris Lattner if (Literal.Pascal) { 444a9d9145741ef77db45890911674705b81605b10bChris Lattner Diag(StrToks[0].getLocation(), diag::err_pragma_comment_malformed); 445a9d9145741ef77db45890911674705b81605b10bChris Lattner return; 446a9d9145741ef77db45890911674705b81605b10bChris Lattner } 447a9d9145741ef77db45890911674705b81605b10bChris Lattner 448a9d9145741ef77db45890911674705b81605b10bChris Lattner ArgumentString = std::string(Literal.GetString(), 449a9d9145741ef77db45890911674705b81605b10bChris Lattner Literal.GetString()+Literal.GetStringLength()); 450636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner } 4511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 452a9d9145741ef77db45890911674705b81605b10bChris Lattner // FIXME: If the kind is "compiler" warn if the string is present (it is 453a9d9145741ef77db45890911674705b81605b10bChris Lattner // ignored). 454a9d9145741ef77db45890911674705b81605b10bChris Lattner // FIXME: 'lib' requires a comment string. 455a9d9145741ef77db45890911674705b81605b10bChris Lattner // FIXME: 'linker' requires a comment string, and has a specific list of 456a9d9145741ef77db45890911674705b81605b10bChris Lattner // things that are allowable. 4571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 458636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner if (Tok.isNot(tok::r_paren)) { 459636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner Diag(Tok.getLocation(), diag::err_pragma_comment_malformed); 460636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner return; 461636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner } 462a9d9145741ef77db45890911674705b81605b10bChris Lattner Lex(Tok); // eat the r_paren. 463636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner 464636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner if (Tok.isNot(tok::eom)) { 465636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner Diag(Tok.getLocation(), diag::err_pragma_comment_malformed); 466636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner return; 467636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner } 4681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 469a9d9145741ef77db45890911674705b81605b10bChris Lattner // If the pragma is lexically sound, notify any interested PPCallbacks. 470172e336b12fa32a1737f66d77a3f2de86f9cc8e8Chris Lattner if (Callbacks) 471172e336b12fa32a1737f66d77a3f2de86f9cc8e8Chris Lattner Callbacks->PragmaComment(CommentLoc, II, ArgumentString); 472636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner} 473636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner 474abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner/// HandlePragmaMessage - Handle the microsoft #pragma message extension. The 475abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner/// syntax is: 476abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner/// #pragma message(messagestring) 477abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner/// messagestring is a string, which is fully macro expanded, and permits string 478abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner/// concatenation, embedded escape characters etc. See MSDN for more details. 479abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattnervoid Preprocessor::HandlePragmaMessage(Token &Tok) { 480abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner SourceLocation MessageLoc = Tok.getLocation(); 481abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner Lex(Tok); 482abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner if (Tok.isNot(tok::l_paren)) { 483abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner Diag(MessageLoc, diag::err_pragma_message_malformed); 484abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner return; 485abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner } 486abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner 487abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner // Read the string. 488abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner Lex(Tok); 489abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner 490abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner 491abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner // We need at least one string. 492abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner if (Tok.isNot(tok::string_literal)) { 493abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner Diag(Tok.getLocation(), diag::err_pragma_message_malformed); 494abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner return; 495abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner } 496abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner 497abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner // String concatenation allows multiple strings, which can even come from 498abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner // macro expansion. 499abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner // "foo " "bar" "Baz" 500abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner llvm::SmallVector<Token, 4> StrToks; 501abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner while (Tok.is(tok::string_literal)) { 502abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner StrToks.push_back(Tok); 503abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner Lex(Tok); 504abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner } 505abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner 506abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner // Concatenate and parse the strings. 507abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner StringLiteralParser Literal(&StrToks[0], StrToks.size(), *this); 508abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner assert(!Literal.AnyWide && "Didn't allow wide strings in"); 509abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner if (Literal.hadError) 510abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner return; 511abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner if (Literal.Pascal) { 512abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner Diag(StrToks[0].getLocation(), diag::err_pragma_message_malformed); 513abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner return; 514abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner } 515abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner 516abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner llvm::StringRef MessageString(Literal.GetString(), Literal.GetStringLength()); 517636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner 518abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner if (Tok.isNot(tok::r_paren)) { 519abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner Diag(Tok.getLocation(), diag::err_pragma_message_malformed); 520abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner return; 521abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner } 522abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner Lex(Tok); // eat the r_paren. 523abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner 524abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner if (Tok.isNot(tok::eom)) { 525abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner Diag(Tok.getLocation(), diag::err_pragma_message_malformed); 526abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner return; 527abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner } 528abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner 529abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner // Output the message. 530abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner Diag(MessageLoc, diag::warn_pragma_message) << MessageString; 531abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner 532abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner // If the pragma is lexically sound, notify any interested PPCallbacks. 533abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner if (Callbacks) 534abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner Callbacks->PragmaMessage(MessageLoc, MessageString); 535abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner} 536636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner 537f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// ParsePragmaPushOrPopMacro - Handle parsing of pragma push_macro/pop_macro. 538f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// Return the IdentifierInfo* associated with the macro to push or pop. 539f47724bf78299c7a50f008e0443c5f9f9f279ddcChris LattnerIdentifierInfo *Preprocessor::ParsePragmaPushOrPopMacro(Token &Tok) { 540f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Remember the pragma token location. 541f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner Token PragmaTok = Tok; 542f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 543f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Read the '('. 544f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner Lex(Tok); 545f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner if (Tok.isNot(tok::l_paren)) { 546f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner Diag(PragmaTok.getLocation(), diag::err_pragma_push_pop_macro_malformed) 547f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner << getSpelling(PragmaTok); 548f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner return 0; 549f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner } 550f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 551f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Read the macro name string. 552f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner Lex(Tok); 553f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner if (Tok.isNot(tok::string_literal)) { 554f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner Diag(PragmaTok.getLocation(), diag::err_pragma_push_pop_macro_malformed) 555f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner << getSpelling(PragmaTok); 556f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner return 0; 557f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner } 558f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 559f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Remember the macro string. 560f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner std::string StrVal = getSpelling(Tok); 561f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 562f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Read the ')'. 563f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner Lex(Tok); 564f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner if (Tok.isNot(tok::r_paren)) { 565f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner Diag(PragmaTok.getLocation(), diag::err_pragma_push_pop_macro_malformed) 566f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner << getSpelling(PragmaTok); 567f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner return 0; 568f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner } 569f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 570f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner assert(StrVal[0] == '"' && StrVal[StrVal.size()-1] == '"' && 571f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner "Invalid string token!"); 572f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 573f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Create a Token from the string. 574f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner Token MacroTok; 575f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner MacroTok.startToken(); 576f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner MacroTok.setKind(tok::identifier); 577f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner CreateString(&StrVal[1], StrVal.size() - 2, MacroTok); 578f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 579f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Get the IdentifierInfo of MacroToPushTok. 580f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner return LookUpIdentifierInfo(MacroTok); 581f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner} 582f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 583f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// HandlePragmaPushMacro - Handle #pragma push_macro. 584f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// The syntax is: 585f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// #pragma push_macro("macro") 586f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattnervoid Preprocessor::HandlePragmaPushMacro(Token &PushMacroTok) { 587f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Parse the pragma directive and get the macro IdentifierInfo*. 588f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner IdentifierInfo *IdentInfo = ParsePragmaPushOrPopMacro(PushMacroTok); 589f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner if (!IdentInfo) return; 590f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 591f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Get the MacroInfo associated with IdentInfo. 592f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner MacroInfo *MI = getMacroInfo(IdentInfo); 593f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 594f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner MacroInfo *MacroCopyToPush = 0; 595f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner if (MI) { 596f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Make a clone of MI. 597f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner MacroCopyToPush = CloneMacroInfo(*MI); 598f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 599f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Allow the original MacroInfo to be redefined later. 600f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner MI->setIsAllowRedefinitionsWithoutWarning(true); 601f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner } 602f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 603f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Push the cloned MacroInfo so we can retrieve it later. 604f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner PragmaPushMacroInfo[IdentInfo].push_back(MacroCopyToPush); 605f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner} 606f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 607f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// HandlePragmaPopMacro - Handle #pragma push_macro. 608f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// The syntax is: 609f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// #pragma pop_macro("macro") 610f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattnervoid Preprocessor::HandlePragmaPopMacro(Token &PopMacroTok) { 611f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner SourceLocation MessageLoc = PopMacroTok.getLocation(); 612f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 613f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Parse the pragma directive and get the macro IdentifierInfo*. 614f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner IdentifierInfo *IdentInfo = ParsePragmaPushOrPopMacro(PopMacroTok); 615f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner if (!IdentInfo) return; 616f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 617f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Find the vector<MacroInfo*> associated with the macro. 618f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner llvm::DenseMap<IdentifierInfo*, std::vector<MacroInfo*> >::iterator iter = 619f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner PragmaPushMacroInfo.find(IdentInfo); 620f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner if (iter != PragmaPushMacroInfo.end()) { 621f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Release the MacroInfo currently associated with IdentInfo. 622f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner MacroInfo *CurrentMI = getMacroInfo(IdentInfo); 623f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner if (CurrentMI) ReleaseMacroInfo(CurrentMI); 624f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 625f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Get the MacroInfo we want to reinstall. 626f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner MacroInfo *MacroToReInstall = iter->second.back(); 627f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 628f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Reinstall the previously pushed macro. 629f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner setMacroInfo(IdentInfo, MacroToReInstall); 630f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 631f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner // Pop PragmaPushMacroInfo stack. 632f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner iter->second.pop_back(); 633f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner if (iter->second.size() == 0) 634f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner PragmaPushMacroInfo.erase(iter); 635f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner } else { 636f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner Diag(MessageLoc, diag::warn_pragma_pop_macro_no_push) 637f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner << IdentInfo->getName(); 638f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner } 639f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner} 6405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// AddPragmaHandler - Add the specified pragma handler to the preprocessor. 6425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// If 'Namespace' is non-null, then it is a token required to exist on the 6435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// pragma line before the pragma string starts, e.g. "STDC" or "GCC". 6449b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidisvoid Preprocessor::AddPragmaHandler(llvm::StringRef Namespace, 6455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PragmaHandler *Handler) { 6465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PragmaNamespace *InsertNS = PragmaHandlers; 6471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If this is specified to be in a namespace, step down into it. 6499b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis if (!Namespace.empty()) { 6505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If there is already a pragma handler with the name of this namespace, 6515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // we either have an error (directive with the same name as a namespace) or 6525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // we already have the namespace to insert into. 6539b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis if (PragmaHandler *Existing = PragmaHandlers->FindHandler(Namespace)) { 6545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer InsertNS = Existing->getIfNamespace(); 6555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(InsertNS != 0 && "Cannot have a pragma namespace and pragma" 6565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer " handler with the same name!"); 6575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } else { 6585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Otherwise, this namespace doesn't exist yet, create and insert the 6595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // handler for it. 6609b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis InsertNS = new PragmaNamespace(Namespace); 6615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PragmaHandlers->AddPragma(InsertNS); 6625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 6635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 6641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Check to make sure we don't already have a pragma for this identifier. 6665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(!InsertNS->FindHandler(Handler->getName()) && 6675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer "Pragma handler already exists for this identifier!"); 6685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer InsertNS->AddPragma(Handler); 6695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 6705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6714095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar/// RemovePragmaHandler - Remove the specific pragma handler from the 6724095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar/// preprocessor. If \arg Namespace is non-null, then it should be the 6734095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar/// namespace that \arg Handler was added to. It is an error to remove 6744095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar/// a handler that has not been registered. 6759b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidisvoid Preprocessor::RemovePragmaHandler(llvm::StringRef Namespace, 6764095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar PragmaHandler *Handler) { 6774095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar PragmaNamespace *NS = PragmaHandlers; 6781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6794095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar // If this is specified to be in a namespace, step down into it. 6809b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis if (!Namespace.empty()) { 6819b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaHandler *Existing = PragmaHandlers->FindHandler(Namespace); 6824095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar assert(Existing && "Namespace containing handler does not exist!"); 6834095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar 6844095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar NS = Existing->getIfNamespace(); 6854095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar assert(NS && "Invalid namespace, registered as a regular pragma handler!"); 6864095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar } 6874095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar 6884095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar NS->RemovePragmaHandler(Handler); 6891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6904095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar // If this is a non-default namespace and it is now empty, remove 6914095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar // it. 6924095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar if (NS != PragmaHandlers && NS->IsEmpty()) 6934095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar PragmaHandlers->RemovePragmaHandler(NS); 6944095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar} 6954095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar 6965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencernamespace { 6972243449253475574fc6f14986ff8f7fce5d46799Chris Lattner/// PragmaOnceHandler - "#pragma once" marks the file as atomically included. 6985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerstruct PragmaOnceHandler : public PragmaHandler { 6999b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaOnceHandler() : PragmaHandler("once") {} 700d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner virtual void HandlePragma(Preprocessor &PP, Token &OnceTok) { 70135410d5cbbb18735d76e00496540d416dc49b577Chris Lattner PP.CheckEndOfDirective("pragma once"); 7025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PP.HandlePragmaOnce(OnceTok); 7035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 7055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7062243449253475574fc6f14986ff8f7fce5d46799Chris Lattner/// PragmaMarkHandler - "#pragma mark ..." is ignored by the compiler, and the 7072243449253475574fc6f14986ff8f7fce5d46799Chris Lattner/// rest of the line is not lexed. 7082243449253475574fc6f14986ff8f7fce5d46799Chris Lattnerstruct PragmaMarkHandler : public PragmaHandler { 7099b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaMarkHandler() : PragmaHandler("mark") {} 7102243449253475574fc6f14986ff8f7fce5d46799Chris Lattner virtual void HandlePragma(Preprocessor &PP, Token &MarkTok) { 7112243449253475574fc6f14986ff8f7fce5d46799Chris Lattner PP.HandlePragmaMark(); 7122243449253475574fc6f14986ff8f7fce5d46799Chris Lattner } 7132243449253475574fc6f14986ff8f7fce5d46799Chris Lattner}; 7142243449253475574fc6f14986ff8f7fce5d46799Chris Lattner 7152243449253475574fc6f14986ff8f7fce5d46799Chris Lattner/// PragmaPoisonHandler - "#pragma poison x" marks x as not usable. 7165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerstruct PragmaPoisonHandler : public PragmaHandler { 7179b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaPoisonHandler() : PragmaHandler("poison") {} 718d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner virtual void HandlePragma(Preprocessor &PP, Token &PoisonTok) { 7195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PP.HandlePragmaPoison(PoisonTok); 7205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 7225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7232243449253475574fc6f14986ff8f7fce5d46799Chris Lattner/// PragmaSystemHeaderHandler - "#pragma system_header" marks the current file 7242243449253475574fc6f14986ff8f7fce5d46799Chris Lattner/// as a system header, which silences warnings in it. 7255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerstruct PragmaSystemHeaderHandler : public PragmaHandler { 7269b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaSystemHeaderHandler() : PragmaHandler("system_header") {} 727d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner virtual void HandlePragma(Preprocessor &PP, Token &SHToken) { 7285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PP.HandlePragmaSystemHeader(SHToken); 72935410d5cbbb18735d76e00496540d416dc49b577Chris Lattner PP.CheckEndOfDirective("pragma"); 7305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 7325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerstruct PragmaDependencyHandler : public PragmaHandler { 7339b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaDependencyHandler() : PragmaHandler("dependency") {} 734d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner virtual void HandlePragma(Preprocessor &PP, Token &DepToken) { 7355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PP.HandlePragmaDependency(DepToken); 7365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 7381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 739abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbarstruct PragmaDebugHandler : public PragmaHandler { 740abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar PragmaDebugHandler() : PragmaHandler("__debug") {} 741abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar virtual void HandlePragma(Preprocessor &PP, Token &DepToken) { 742abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar Token Tok; 743abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar PP.LexUnexpandedToken(Tok); 744abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar if (Tok.isNot(tok::identifier)) { 745abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar PP.Diag(Tok, diag::warn_pragma_diagnostic_clang_invalid); 746abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar return; 747abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar } 748abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar IdentifierInfo *II = Tok.getIdentifierInfo(); 749abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar 7505505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar if (II->isStr("assert")) { 7515505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar assert(0 && "This is an assertion!"); 752abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar } else if (II->isStr("crash")) { 7535505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar *(volatile int*) 0x11 = 0; 7545505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar } else if (II->isStr("llvm_fatal_error")) { 7555505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar llvm::report_fatal_error("#pragma clang __debug llvm_fatal_error"); 7565505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar } else if (II->isStr("llvm_unreachable")) { 7575505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar llvm_unreachable("#pragma clang __debug llvm_unreachable"); 7585505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar } else if (II->isStr("overflow_stack")) { 7595505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar DebugOverflowStack(); 760ff759a66526d6a985fb4efae69c6b798d83364dfDaniel Dunbar } else if (II->isStr("handle_crash")) { 761ff759a66526d6a985fb4efae69c6b798d83364dfDaniel Dunbar llvm::CrashRecoveryContext *CRC =llvm::CrashRecoveryContext::GetCurrent(); 762ff759a66526d6a985fb4efae69c6b798d83364dfDaniel Dunbar if (CRC) 763ff759a66526d6a985fb4efae69c6b798d83364dfDaniel Dunbar CRC->HandleCrash(); 7645505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar } else { 7655505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar PP.Diag(Tok, diag::warn_pragma_debug_unexpected_command) 7665505413ee8e4e2924f52ba81181071f3a492e7d9Daniel Dunbar << II->getName(); 767abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar } 768abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar } 769abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar 770abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar void DebugOverflowStack() { 771abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar DebugOverflowStack(); 772abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar } 773abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar}; 774abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar 775edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner/// PragmaDiagnosticHandler - e.g. '#pragma GCC diagnostic ignored "-Wformat"' 77604ae2df026b275aae5dddfc0db5ca55ff4e62179Chris Lattner/// Since clang's diagnostic supports extended functionality beyond GCC's 77704ae2df026b275aae5dddfc0db5ca55ff4e62179Chris Lattner/// the constructor takes a clangMode flag to tell it whether or not to allow 77804ae2df026b275aae5dddfc0db5ca55ff4e62179Chris Lattner/// clang's extended functionality, or whether to reject it. 779edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattnerstruct PragmaDiagnosticHandler : public PragmaHandler { 78004ae2df026b275aae5dddfc0db5ca55ff4e62179Chris Lattnerprivate: 78104ae2df026b275aae5dddfc0db5ca55ff4e62179Chris Lattner const bool ClangMode; 78204ae2df026b275aae5dddfc0db5ca55ff4e62179Chris Lattnerpublic: 7839b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis explicit PragmaDiagnosticHandler(const bool clangMode) 7849b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis : PragmaHandler("diagnostic"), ClangMode(clangMode) {} 7859b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis 786edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner virtual void HandlePragma(Preprocessor &PP, Token &DiagToken) { 787edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner Token Tok; 788edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner PP.LexUnexpandedToken(Tok); 789edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner if (Tok.isNot(tok::identifier)) { 79004ae2df026b275aae5dddfc0db5ca55ff4e62179Chris Lattner unsigned Diag = ClangMode ? diag::warn_pragma_diagnostic_clang_invalid 79104ae2df026b275aae5dddfc0db5ca55ff4e62179Chris Lattner : diag::warn_pragma_diagnostic_gcc_invalid; 79204ae2df026b275aae5dddfc0db5ca55ff4e62179Chris Lattner PP.Diag(Tok, Diag); 793edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner return; 794edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner } 795edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner IdentifierInfo *II = Tok.getIdentifierInfo(); 7961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 797edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner diag::Mapping Map; 798edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner if (II->isStr("warning")) 799edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner Map = diag::MAP_WARNING; 800edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner else if (II->isStr("error")) 801edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner Map = diag::MAP_ERROR; 802edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner else if (II->isStr("ignored")) 803edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner Map = diag::MAP_IGNORE; 804edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner else if (II->isStr("fatal")) 805edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner Map = diag::MAP_FATAL; 80604ae2df026b275aae5dddfc0db5ca55ff4e62179Chris Lattner else if (ClangMode) { 80704ae2df026b275aae5dddfc0db5ca55ff4e62179Chris Lattner if (II->isStr("pop")) { 8081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (!PP.getDiagnostics().popMappings()) 80904ae2df026b275aae5dddfc0db5ca55ff4e62179Chris Lattner PP.Diag(Tok, diag::warn_pragma_diagnostic_clang_cannot_ppp); 81004ae2df026b275aae5dddfc0db5ca55ff4e62179Chris Lattner return; 81104ae2df026b275aae5dddfc0db5ca55ff4e62179Chris Lattner } 81204ae2df026b275aae5dddfc0db5ca55ff4e62179Chris Lattner 81304ae2df026b275aae5dddfc0db5ca55ff4e62179Chris Lattner if (II->isStr("push")) { 81404ae2df026b275aae5dddfc0db5ca55ff4e62179Chris Lattner PP.getDiagnostics().pushMappings(); 8151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return; 81604ae2df026b275aae5dddfc0db5ca55ff4e62179Chris Lattner } 81704ae2df026b275aae5dddfc0db5ca55ff4e62179Chris Lattner 81804ae2df026b275aae5dddfc0db5ca55ff4e62179Chris Lattner PP.Diag(Tok, diag::warn_pragma_diagnostic_clang_invalid); 81904ae2df026b275aae5dddfc0db5ca55ff4e62179Chris Lattner return; 82004ae2df026b275aae5dddfc0db5ca55ff4e62179Chris Lattner } else { 82104ae2df026b275aae5dddfc0db5ca55ff4e62179Chris Lattner PP.Diag(Tok, diag::warn_pragma_diagnostic_gcc_invalid); 822edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner return; 823edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner } 8241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 825edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner PP.LexUnexpandedToken(Tok); 826edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner 827edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner // We need at least one string. 828edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner if (Tok.isNot(tok::string_literal)) { 829edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner PP.Diag(Tok.getLocation(), diag::warn_pragma_diagnostic_invalid_token); 830edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner return; 831edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner } 8321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 833edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner // String concatenation allows multiple strings, which can even come from 834edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner // macro expansion. 835edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner // "foo " "bar" "Baz" 836edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner llvm::SmallVector<Token, 4> StrToks; 837edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner while (Tok.is(tok::string_literal)) { 838edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner StrToks.push_back(Tok); 839edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner PP.LexUnexpandedToken(Tok); 840edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner } 8411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 842edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner if (Tok.isNot(tok::eom)) { 843edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner PP.Diag(Tok.getLocation(), diag::warn_pragma_diagnostic_invalid_token); 844edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner return; 845edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner } 8461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 847edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner // Concatenate and parse the strings. 848edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner StringLiteralParser Literal(&StrToks[0], StrToks.size(), PP); 849edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner assert(!Literal.AnyWide && "Didn't allow wide strings in"); 850edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner if (Literal.hadError) 851edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner return; 852edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner if (Literal.Pascal) { 85304ae2df026b275aae5dddfc0db5ca55ff4e62179Chris Lattner unsigned Diag = ClangMode ? diag::warn_pragma_diagnostic_clang_invalid 85404ae2df026b275aae5dddfc0db5ca55ff4e62179Chris Lattner : diag::warn_pragma_diagnostic_gcc_invalid; 85504ae2df026b275aae5dddfc0db5ca55ff4e62179Chris Lattner PP.Diag(Tok, Diag); 856edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner return; 857edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner } 85804ae2df026b275aae5dddfc0db5ca55ff4e62179Chris Lattner 859edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner std::string WarningName(Literal.GetString(), 860edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner Literal.GetString()+Literal.GetStringLength()); 861edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner 862edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner if (WarningName.size() < 3 || WarningName[0] != '-' || 863edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner WarningName[1] != 'W') { 864edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner PP.Diag(StrToks[0].getLocation(), 865edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner diag::warn_pragma_diagnostic_invalid_option); 866edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner return; 867edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner } 8681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 869edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner if (PP.getDiagnostics().setDiagnosticGroupMapping(WarningName.c_str()+2, 870edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner Map)) 871edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner PP.Diag(StrToks[0].getLocation(), 872edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner diag::warn_pragma_diagnostic_unknown_warning) << WarningName; 873edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner } 874edaf877d2469147ba818187a3e57a00b3f73b123Chris Lattner}; 8751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 876636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner/// PragmaCommentHandler - "#pragma comment ...". 877636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattnerstruct PragmaCommentHandler : public PragmaHandler { 8789b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaCommentHandler() : PragmaHandler("comment") {} 879636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner virtual void HandlePragma(Preprocessor &PP, Token &CommentTok) { 880636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner PP.HandlePragmaComment(CommentTok); 881636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner } 882636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner}; 8831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 884abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner/// PragmaMessageHandler - "#pragma message("...")". 885abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattnerstruct PragmaMessageHandler : public PragmaHandler { 8869b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaMessageHandler() : PragmaHandler("message") {} 887abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner virtual void HandlePragma(Preprocessor &PP, Token &CommentTok) { 888abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner PP.HandlePragmaMessage(CommentTok); 889abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner } 890abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner}; 891abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner 892f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// PragmaPushMacroHandler - "#pragma push_macro" saves the value of the 893f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// macro on the top of the stack. 894f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattnerstruct PragmaPushMacroHandler : public PragmaHandler { 895f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner PragmaPushMacroHandler() : PragmaHandler("push_macro") {} 896f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner virtual void HandlePragma(Preprocessor &PP, Token &PushMacroTok) { 897f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner PP.HandlePragmaPushMacro(PushMacroTok); 898f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner } 899f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner}; 900f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 901f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 902f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// PragmaPopMacroHandler - "#pragma pop_macro" sets the value of the 903f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner/// macro to the value on the top of the stack. 904f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattnerstruct PragmaPopMacroHandler : public PragmaHandler { 905f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner PragmaPopMacroHandler() : PragmaHandler("pop_macro") {} 906f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner virtual void HandlePragma(Preprocessor &PP, Token &PopMacroTok) { 907f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner PP.HandlePragmaPopMacro(PopMacroTok); 908f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner } 909f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner}; 910f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 911062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner// Pragma STDC implementations. 9126c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner 9136c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattnerenum STDCSetting { 9146c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner STDC_ON, STDC_OFF, STDC_DEFAULT, STDC_INVALID 9156c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner}; 9161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9176c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattnerstatic STDCSetting LexOnOffSwitch(Preprocessor &PP) { 9186c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner Token Tok; 9196c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner PP.LexUnexpandedToken(Tok); 9206c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner 9216c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner if (Tok.isNot(tok::identifier)) { 9226c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner PP.Diag(Tok, diag::ext_stdc_pragma_syntax); 9236c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner return STDC_INVALID; 9246c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner } 9256c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner IdentifierInfo *II = Tok.getIdentifierInfo(); 9266c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner STDCSetting Result; 9276c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner if (II->isStr("ON")) 9286c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner Result = STDC_ON; 9296c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner else if (II->isStr("OFF")) 9306c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner Result = STDC_OFF; 9316c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner else if (II->isStr("DEFAULT")) 9326c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner Result = STDC_DEFAULT; 9336c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner else { 9346c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner PP.Diag(Tok, diag::ext_stdc_pragma_syntax); 9356c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner return STDC_INVALID; 9366c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner } 9376c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner 9386c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner // Verify that this is followed by EOM. 9396c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner PP.LexUnexpandedToken(Tok); 9406c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner if (Tok.isNot(tok::eom)) 9416c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner PP.Diag(Tok, diag::ext_stdc_pragma_syntax_eom); 9426c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner return Result; 9436c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner} 9441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 945062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner/// PragmaSTDC_FP_CONTRACTHandler - "#pragma STDC FP_CONTRACT ...". 946062f23246510393c19b537b68ec88b6a08ee8996Chris Lattnerstruct PragmaSTDC_FP_CONTRACTHandler : public PragmaHandler { 9479b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaSTDC_FP_CONTRACTHandler() : PragmaHandler("FP_CONTRACT") {} 948f545be5552b6fd40a4c766fbf82dab0ab5305790Chris Lattner virtual void HandlePragma(Preprocessor &PP, Token &Tok) { 9496c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner // We just ignore the setting of FP_CONTRACT. Since we don't do contractions 9506c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner // at all, our default is OFF and setting it to ON is an optimization hint 9516c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner // we can safely ignore. When we support -ffma or something, we would need 9526c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner // to diagnose that we are ignoring FMA. 9536c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner LexOnOffSwitch(PP); 954062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner } 955062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner}; 9561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 957062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner/// PragmaSTDC_FENV_ACCESSHandler - "#pragma STDC FENV_ACCESS ...". 958062f23246510393c19b537b68ec88b6a08ee8996Chris Lattnerstruct PragmaSTDC_FENV_ACCESSHandler : public PragmaHandler { 9599b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaSTDC_FENV_ACCESSHandler() : PragmaHandler("FENV_ACCESS") {} 960f545be5552b6fd40a4c766fbf82dab0ab5305790Chris Lattner virtual void HandlePragma(Preprocessor &PP, Token &Tok) { 9614d8aac3778b40c161bed9964125948ee01c08821Chris Lattner if (LexOnOffSwitch(PP) == STDC_ON) 9624d8aac3778b40c161bed9964125948ee01c08821Chris Lattner PP.Diag(Tok, diag::warn_stdc_fenv_access_not_supported); 963062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner } 964062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner}; 9651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 966062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner/// PragmaSTDC_CX_LIMITED_RANGEHandler - "#pragma STDC CX_LIMITED_RANGE ...". 967062f23246510393c19b537b68ec88b6a08ee8996Chris Lattnerstruct PragmaSTDC_CX_LIMITED_RANGEHandler : public PragmaHandler { 9689b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaSTDC_CX_LIMITED_RANGEHandler() 9699b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis : PragmaHandler("CX_LIMITED_RANGE") {} 970f545be5552b6fd40a4c766fbf82dab0ab5305790Chris Lattner virtual void HandlePragma(Preprocessor &PP, Token &Tok) { 9716c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner LexOnOffSwitch(PP); 972062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner } 973062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner}; 9741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 975062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner/// PragmaSTDC_UnknownHandler - "#pragma STDC ...". 976062f23246510393c19b537b68ec88b6a08ee8996Chris Lattnerstruct PragmaSTDC_UnknownHandler : public PragmaHandler { 9779b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PragmaSTDC_UnknownHandler() {} 978f545be5552b6fd40a4c766fbf82dab0ab5305790Chris Lattner virtual void HandlePragma(Preprocessor &PP, Token &UnknownTok) { 9796c5cf4a2e234923ab66127de0874a71cb6bfdd83Chris Lattner // C99 6.10.6p2, unknown forms are not allowed. 980f545be5552b6fd40a4c766fbf82dab0ab5305790Chris Lattner PP.Diag(UnknownTok, diag::ext_stdc_pragma_ignored); 981062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner } 982062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner}; 9831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} // end anonymous namespace 9855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 9865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 9875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// RegisterBuiltinPragmas - Install the standard preprocessor pragmas: 9885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// #pragma GCC poison/system_header/dependency and #pragma once. 9895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencervoid Preprocessor::RegisterBuiltinPragmas() { 9909b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler(new PragmaOnceHandler()); 9919b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler(new PragmaMarkHandler()); 992f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner AddPragmaHandler(new PragmaPushMacroHandler()); 993f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner AddPragmaHandler(new PragmaPopMacroHandler()); 9941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 995e8fa06e07363b6d5e6c371bbd454d51bab78d01dChris Lattner // #pragma GCC ... 9969b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler("GCC", new PragmaPoisonHandler()); 9979b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler("GCC", new PragmaSystemHeaderHandler()); 9989b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler("GCC", new PragmaDependencyHandler()); 9999b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler("GCC", new PragmaDiagnosticHandler(false)); 1000e8fa06e07363b6d5e6c371bbd454d51bab78d01dChris Lattner // #pragma clang ... 10019b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler("clang", new PragmaPoisonHandler()); 10029b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler("clang", new PragmaSystemHeaderHandler()); 1003abf7b72a965efba4a5ac6f85c66d5aba0c83f972Daniel Dunbar AddPragmaHandler("clang", new PragmaDebugHandler()); 10049b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler("clang", new PragmaDependencyHandler()); 10059b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler("clang", new PragmaDiagnosticHandler(true)); 10069b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis 10079b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler("STDC", new PragmaSTDC_FP_CONTRACTHandler()); 10089b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler("STDC", new PragmaSTDC_FENV_ACCESSHandler()); 10099b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler("STDC", new PragmaSTDC_CX_LIMITED_RANGEHandler()); 1010062f23246510393c19b537b68ec88b6a08ee8996Chris Lattner AddPragmaHandler("STDC", new PragmaSTDC_UnknownHandler()); 10111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1012636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner // MS extensions. 1013abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner if (Features.Microsoft) { 10149b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler(new PragmaCommentHandler()); 10159b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis AddPragmaHandler(new PragmaMessageHandler()); 1016abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner } 10175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 1018