1 //===--- Path.h - Helper typedefs --------------------------------*- C++-*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANGD_SUPPORT_PATH_H
10 #define LLVM_CLANG_TOOLS_EXTRA_CLANGD_SUPPORT_PATH_H
11 
12 #include "llvm/ADT/StringRef.h"
13 #include "llvm/Support/Path.h"
14 #include <string>
15 
16 /// Whether current platform treats paths case insensitively.
17 #if defined(_WIN32) || defined(__APPLE__)
18 #define CLANGD_PATH_CASE_INSENSITIVE
19 #endif
20 
21 namespace clang {
22 namespace clangd {
23 
24 /// A typedef to represent a file path. Used solely for more descriptive
25 /// signatures.
26 using Path = std::string;
27 /// A typedef to represent a ref to file path. Used solely for more descriptive
28 /// signatures.
29 using PathRef = llvm::StringRef;
30 
31 // For platforms where paths are case-insensitive (but case-preserving),
32 // we need to do case-insensitive comparisons and use lowercase keys.
33 // FIXME: Make Path a real class with desired semantics instead.
34 std::string maybeCaseFoldPath(PathRef Path);
35 bool pathEqual(PathRef, PathRef);
36 
37 /// Checks if \p Ancestor is a proper ancestor of \p Path. This is just a
38 /// smarter lexical prefix match, e.g: foo/bar/baz doesn't start with foo/./bar.
39 /// Both \p Ancestor and \p Path must be absolute.
40 bool pathStartsWith(
41     PathRef Ancestor, PathRef Path,
42     llvm::sys::path::Style Style = llvm::sys::path::Style::native);
43 } // namespace clangd
44 } // namespace clang
45 
46 #endif
47