1 files changed, 96 insertions, 0 deletions
diff --git a/tools/CIndex/CIndexer.cpp b/tools/CIndex/CIndexer.cpp
new file mode 100644
index 0000000..f26c8ce
--- /dev/null
+++ b/tools/CIndex/CIndexer.cpp
@@ -0,0 +1,96 @@
+//===- CIndex.cpp - Clang-C Source Indexing Library -----------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements the Clang-C Source Indexing library.
+//
+//===----------------------------------------------------------------------===//
+
+#include "CIndexer.h"
+
+#include "clang/AST/Decl.h"
+#include "clang/AST/DeclVisitor.h"
+#include "clang/AST/StmtVisitor.h"
+#include "clang/Basic/FileManager.h"
+#include "clang/Basic/SourceManager.h"
+#include "clang/Basic/Version.h"
+#include "clang/Sema/CodeCompleteConsumer.h"
+#include "llvm/ADT/StringExtras.h"
+#include "llvm/Config/config.h"
+#include "llvm/Support/Compiler.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/raw_ostream.h"
+#include "llvm/System/Program.h"
+
+#include <cstdio>
+#include <vector>
+#include <sstream>
+
+#ifdef LLVM_ON_WIN32
+#include <windows.h>
+#else
+#include <dlfcn.h>
+#endif
+
+using namespace clang;
+using namespace idx;
+
+const llvm::sys::Path& CIndexer::getClangPath() {
+  // Did we already compute the path?
+  if (!ClangPath.empty())
+    return ClangPath;
+
+  // Find the location where this library lives (libCIndex.dylib).
+#ifdef LLVM_ON_WIN32
+  MEMORY_BASIC_INFORMATION mbi;
+  char path[MAX_PATH];
+  VirtualQuery((void *)(uintptr_t)clang_createTranslationUnit, &mbi,
+               sizeof(mbi));
+  GetModuleFileNameA((HINSTANCE)mbi.AllocationBase, path, MAX_PATH);
+
+  llvm::sys::Path CIndexPath(path);
+
+  CIndexPath.eraseComponent();
+  CIndexPath.appendComponent("clang");
+  CIndexPath.appendSuffix("exe");
+  CIndexPath.makeAbsolute();
+#else
+  // This silly cast below avoids a C++ warning.
+  Dl_info info;
+  if (dladdr((void *)(uintptr_t)clang_createTranslationUnit, &info) == 0)
+    assert(0 && "Call to dladdr() failed");
+
+  llvm::sys::Path CIndexPath(info.dli_fname);
+
+  // We now have the CIndex directory, locate clang relative to it.
+  CIndexPath.eraseComponent();
+  CIndexPath.eraseComponent();
+  CIndexPath.appendComponent("bin");
+  CIndexPath.appendComponent("clang");
+#endif
+
+  // Cache our result.
+  ClangPath = CIndexPath;
+  return ClangPath;
+}
+
+std::string CIndexer::getClangResourcesPath() {
+  llvm::sys::Path P = getClangPath();
+
+  if (!P.empty()) {
+    P.eraseComponent();  // Remove /clang from foo/bin/clang
+    P.eraseComponent();  // Remove /bin   from foo/bin
+
+    // Get foo/lib/clang/<version>/include
+    P.appendComponent("lib");
+    P.appendComponent("clang");
+    P.appendComponent(CLANG_VERSION_STRING);
+  }
+
+  return P.str();
+}