CIndexInclusionStack.cpp revision f51f20fa34654da75d15a9e2a1a0cd2fc0d8603d
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 "CXSourceLocation.h" 17#include "clang/AST/DeclVisitor.h" 18#include "clang/Frontend/ASTUnit.h" 19#include "llvm/ADT/SmallString.h" 20#include "llvm/Support/raw_ostream.h" 21using namespace clang; 22 23extern "C" { 24void clang_getInclusions(CXTranslationUnit TU, CXInclusionVisitor CB, 25 CXClientData clientData) { 26 27 ASTUnit *CXXUnit = static_cast<ASTUnit *>(TU); 28 SourceManager &SM = CXXUnit->getSourceManager(); 29 ASTContext &Ctx = CXXUnit->getASTContext(); 30 31 llvm::SmallVector<CXSourceLocation, 10> InclusionStack; 32 unsigned i = SM.sloc_loaded_entry_size(); 33 unsigned n = SM.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 if (i >= n) 39 i = 0; 40 41 for ( ; i < n ; ++i) { 42 43 const SrcMgr::SLocEntry &SL = SM.getSLocEntry(i); 44 45 if (!SL.isFile()) 46 continue; 47 48 const SrcMgr::FileInfo &FI = SL.getFile(); 49 if (!FI.getContentCache()->Entry) 50 continue; 51 52 // Build the inclusion stack. 53 SourceLocation L = FI.getIncludeLoc(); 54 InclusionStack.clear(); 55 while (L.isValid()) { 56 PresumedLoc PLoc = SM.getPresumedLoc(L); 57 InclusionStack.push_back(cxloc::translateSourceLocation(Ctx, L)); 58 L = PLoc.getIncludeLoc(); 59 } 60 61 // Callback to the client. 62 // FIXME: We should have a function to construct CXFiles. 63 CB((CXFile) FI.getContentCache()->Entry, 64 InclusionStack.data(), InclusionStack.size(), clientData); 65 } 66} 67} // end extern C 68