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