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-rw-r--r--tools/libclang/CIndexer.cpp154
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+//===- 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;
+
+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.appendComponent("..");
+ 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();
+}
+
+static llvm::sys::Path GetTemporaryPath() {
+ // FIXME: This is lame; sys::Path should provide this function (in particular,
+ // it should know how to find the temporary files dir).
+ std::string Error;
+ const char *TmpDir = ::getenv("TMPDIR");
+ if (!TmpDir)
+ TmpDir = ::getenv("TEMP");
+ if (!TmpDir)
+ TmpDir = ::getenv("TMP");
+ if (!TmpDir)
+ TmpDir = "/tmp";
+ llvm::sys::Path P(TmpDir);
+ P.appendComponent("remap");
+ if (P.makeUnique(false, &Error))
+ return llvm::sys::Path("");
+
+ // FIXME: Grumble, makeUnique sometimes leaves the file around!? PR3837.
+ P.eraseFromDisk(false, 0);
+
+ return P;
+}
+
+bool clang::RemapFiles(unsigned num_unsaved_files,
+ struct CXUnsavedFile *unsaved_files,
+ std::vector<std::string> &RemapArgs,
+ std::vector<llvm::sys::Path> &TemporaryFiles) {
+ for (unsigned i = 0; i != num_unsaved_files; ++i) {
+ // Write the contents of this unsaved file into the temporary file.
+ llvm::sys::Path SavedFile(GetTemporaryPath());
+ if (SavedFile.empty())
+ return true;
+
+ std::string ErrorInfo;
+ llvm::raw_fd_ostream OS(SavedFile.c_str(), ErrorInfo);
+ if (!ErrorInfo.empty())
+ return true;
+
+ OS.write(unsaved_files[i].Contents, unsaved_files[i].Length);
+ OS.close();
+ if (OS.has_error()) {
+ SavedFile.eraseFromDisk();
+ return true;
+ }
+
+ // Remap the file.
+ std::string RemapArg = unsaved_files[i].Filename;
+ RemapArg += ';';
+ RemapArg += SavedFile.str();
+ RemapArgs.push_back("-Xclang");
+ RemapArgs.push_back("-remap-file");
+ RemapArgs.push_back("-Xclang");
+ RemapArgs.push_back(RemapArg);
+ TemporaryFiles.push_back(SavedFile);
+ }
+
+ return false;
+}
+
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