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//===--------------------- 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_utility {
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);
StringLexer(const StringLexer &rhs);
// 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_
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