reference, declaration → definition
definition → references, declarations, derived classes, virtual overrides
reference to multiple definitions → definitions
unreferenced

    1
    2
    3
    4
    5
    6
    7
    8
    9
   10
   11
   12
   13
   14
   15
   16
   17
   18
   19
   20
   21
   22
   23
   24
   25
   26
   27
   28
   29
   30
   31
   32
   33
   34
   35
   36
   37
   38
   39
   40
   41
   42
   43
   44
   45
   46
   47
   48
   49
   50
   51
   52
   53
   54
   55
   56

//===-- StringLexer.h -------------------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#ifndef utility_StringLexer_h_
#define utility_StringLexer_h_

#include <initializer_list>
#include <string>
#include <utility>

namespace lldb_private {

class StringLexer {
public:
  typedef std::string::size_type Position;
  typedef std::string::size_type Size;

  typedef std::string::value_type Character;

  StringLexer(std::string s);

  // These APIs are not bounds-checked.  Use HasAtLeast() if you're not sure.
  Character Peek();

  bool NextIf(Character c);

  std::pair<bool, Character> NextIf(std::initializer_list<Character> cs);

  bool AdvanceIf(const std::string &token);

  Character Next();

  bool HasAtLeast(Size s);

  std::string GetUnlexed();

  // This will assert if there are less than s characters preceding the cursor.
  void PutBack(Size s);

  StringLexer &operator=(const StringLexer &rhs);

private:
  std::string m_data;
  Position m_position;

  void Consume();
};

} // namespace lldb_private

#endif // #ifndef utility_StringLexer_h_