1//===- CIndex.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 implements the Clang-C Source Indexing library. 11// 12//===----------------------------------------------------------------------===// 13 14#include "CIndexer.h" 15#include "clang/AST/Decl.h" 16#include "clang/AST/DeclVisitor.h" 17#include "clang/AST/StmtVisitor.h" 18#include "clang/Basic/FileManager.h" 19#include "clang/Basic/SourceManager.h" 20#include "clang/Basic/Version.h" 21#include "clang/Sema/CodeCompleteConsumer.h" 22#include "llvm/ADT/StringExtras.h" 23#include "llvm/Config/llvm-config.h" 24#include "llvm/Support/Compiler.h" 25#include "llvm/Support/MemoryBuffer.h" 26#include "llvm/Support/Program.h" 27#include "llvm/Support/raw_ostream.h" 28#include <cstdio> 29#include <sstream> 30#include <vector> 31 32#ifdef __CYGWIN__ 33#include <cygwin/version.h> 34#include <sys/cygwin.h> 35#define LLVM_ON_WIN32 1 36#endif 37 38#ifdef LLVM_ON_WIN32 39#include <windows.h> 40#else 41#include <dlfcn.h> 42#endif 43 44using namespace clang; 45 46const std::string &CIndexer::getClangResourcesPath() { 47 // Did we already compute the path? 48 if (!ResourcesPath.empty()) 49 return ResourcesPath; 50 51 SmallString<128> LibClangPath; 52 53 // Find the location where this library lives (libclang.dylib). 54#ifdef LLVM_ON_WIN32 55 MEMORY_BASIC_INFORMATION mbi; 56 char path[MAX_PATH]; 57 VirtualQuery((void *)(uintptr_t)clang_createTranslationUnit, &mbi, 58 sizeof(mbi)); 59 GetModuleFileNameA((HINSTANCE)mbi.AllocationBase, path, MAX_PATH); 60 61#ifdef __CYGWIN__ 62 char w32path[MAX_PATH]; 63 strcpy(w32path, path); 64#if CYGWIN_VERSION_API_MAJOR > 0 || CYGWIN_VERSION_API_MINOR >= 181 65 cygwin_conv_path(CCP_WIN_A_TO_POSIX, w32path, path, MAX_PATH); 66#else 67 cygwin_conv_to_full_posix_path(w32path, path); 68#endif 69#endif 70 71 LibClangPath += llvm::sys::path::parent_path(path); 72#else 73 // This silly cast below avoids a C++ warning. 74 Dl_info info; 75 if (dladdr((void *)(uintptr_t)clang_createTranslationUnit, &info) == 0) 76 llvm_unreachable("Call to dladdr() failed"); 77 78 // We now have the CIndex directory, locate clang relative to it. 79 LibClangPath += llvm::sys::path::parent_path(info.dli_fname); 80#endif 81 82 llvm::sys::path::append(LibClangPath, "clang", CLANG_VERSION_STRING); 83 84 // Cache our result. 85 ResourcesPath = LibClangPath.str(); 86 return ResourcesPath; 87} 88