1 //===- CIndexInclusionStack.cpp - Clang-C Source Indexing Library ---------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file defines a callback mechanism for clients to get the inclusion 11 // stack from a translation unit. 12 // 13 //===----------------------------------------------------------------------===// 14 15 #include "CIndexer.h" 16 #include "CXTranslationUnit.h" 17 #include "CXSourceLocation.h" 18 #include "clang/AST/DeclVisitor.h" 19 #include "clang/Frontend/ASTUnit.h" 20 #include "llvm/ADT/SmallString.h" 21 #include "llvm/Support/raw_ostream.h" 22 using namespace clang; 23 24 extern "C" { 25 void clang_getInclusions(CXTranslationUnit TU, CXInclusionVisitor CB, 26 CXClientData clientData) { 27 28 ASTUnit *CXXUnit = static_cast<ASTUnit *>(TU->TUData); 29 SourceManager &SM = CXXUnit->getSourceManager(); 30 ASTContext &Ctx = CXXUnit->getASTContext(); 31 32 llvm::SmallVector<CXSourceLocation, 10> InclusionStack; 33 unsigned n = SM.local_sloc_entry_size(); 34 35 // In the case where all the SLocEntries are in an external source, traverse 36 // those SLocEntries as well. This is the case where we are looking 37 // at the inclusion stack of an AST/PCH file. 38 const SrcMgr::SLocEntry &(SourceManager::*Getter)(unsigned, bool*) const; 39 if (n == 1) { 40 Getter = &SourceManager::getLoadedSLocEntry; 41 n = SM.loaded_sloc_entry_size(); 42 } else 43 Getter = &SourceManager::getLocalSLocEntry; 44 45 for (unsigned i = 0 ; i < n ; ++i) { 46 bool Invalid = false; 47 const SrcMgr::SLocEntry &SL = (SM.*Getter)(i, &Invalid); 48 49 if (!SL.isFile() || Invalid) 50 continue; 51 52 const SrcMgr::FileInfo &FI = SL.getFile(); 53 if (!FI.getContentCache()->OrigEntry) 54 continue; 55 56 // Build the inclusion stack. 57 SourceLocation L = FI.getIncludeLoc(); 58 InclusionStack.clear(); 59 while (L.isValid()) { 60 PresumedLoc PLoc = SM.getPresumedLoc(L); 61 InclusionStack.push_back(cxloc::translateSourceLocation(Ctx, L)); 62 L = PLoc.isValid()? PLoc.getIncludeLoc() : SourceLocation(); 63 } 64 65 // Callback to the client. 66 // FIXME: We should have a function to construct CXFiles. 67 CB((CXFile) FI.getContentCache()->OrigEntry, 68 InclusionStack.data(), InclusionStack.size(), clientData); 69 } 70 } 71 } // end extern C 72
