1//===-- StringLexer.h -------------------------------------------*- 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 LLDB_UTILITY_STRINGLEXER_H
10#define LLDB_UTILITY_STRINGLEXER_H
11
12#include <initializer_list>
13#include <string>
14#include <utility>
15
16namespace lldb_private {
17
18class StringLexer {
19public:
20 typedef std::string::size_type Position;
21 typedef std::string::size_type Size;
22
23 typedef std::string::value_type Character;
24
25 StringLexer(std::string s);
26
27 // These APIs are not bounds-checked. Use HasAtLeast() if you're not sure.
28 Character Peek();
29
30 bool NextIf(Character c);
31
32 std::pair<bool, Character> NextIf(std::initializer_list<Character> cs);
33
34 bool AdvanceIf(const std::string &token);
35
36 Character Next();
37
38 bool HasAtLeast(Size s);
39
40 std::string GetUnlexed();
41
42 // This will assert if there are less than s characters preceding the cursor.
43 void PutBack(Size s);
44
45 StringLexer &operator=(const StringLexer &rhs);
46
47private:
48 std::string m_data;
49 Position m_position;
50
51 void Consume();
52};
53
54} // namespace lldb_private
55
56#endif // LLDB_UTILITY_STRINGLEXER_H
57

source code of lldb/include/lldb/Utility/StringLexer.h