1//===--- Format.h - automatic code formatting ---------------*- 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// Clangd uses clang-format for formatting operations.
10// This file adapts it to support new scenarios like format-on-type.
11//
12//===----------------------------------------------------------------------===//
13#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANGD_FORMAT_H
14#define LLVM_CLANG_TOOLS_EXTRA_CLANGD_FORMAT_H
15
16#include "clang/Format/Format.h"
17#include "clang/Tooling/Core/Replacement.h"
18#include "llvm/ADT/StringRef.h"
19
20namespace clang {
21namespace clangd {
22
23/// Applies limited formatting around new \p InsertedText.
24/// The \p Code already contains the updated text before \p Cursor, and may have
25/// had additional / characters (such as indentation) inserted by the editor.
26///
27/// Example breaking a line (^ is the cursor):
28/// === before newline is typed ===
29/// if(1){^}
30/// === after newline is typed and editor indents ===
31/// if(1){
32/// ^}
33/// === after formatIncremental(InsertedText="\n") ===
34/// if (1) {
35/// ^
36/// }
37///
38/// We return sorted vector<tooling::Replacement>, not tooling::Replacements!
39/// We may insert text both before and after the cursor. tooling::Replacements
40/// would merge these, and thus lose information about cursor position.
41std::vector<tooling::Replacement>
42formatIncremental(llvm::StringRef Code, unsigned Cursor,
43 llvm::StringRef InsertedText, format::FormatStyle Style);
44
45/// Determine the new cursor position after applying \p Replacements.
46/// Analogue of tooling::Replacements::getShiftedCodePosition().
47unsigned
48transformCursorPosition(unsigned Offset,
49 const std::vector<tooling::Replacement> &Replacements);
50
51} // namespace clangd
52} // namespace clang
53
54#endif
55
56

source code of clang-tools-extra/clangd/Format.h