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 44 using namespace clang; 45 46 const 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
