lexer.h

#ifndef SPUDPLATE_LEXER_H
#define SPUDPLATE_LEXER_H
 
#include <cstddef>
#include <string>
 
#include "spudplate/token.h"
 
namespace spudplate {
 
class Lexer {
  public:
    explicit Lexer(std::string source);
 
    Token nextToken();
 
  private:
    std::string source_;
    std::size_t pos_;
    int line_;
    int column_;
 
    [[nodiscard]] char current() const;
    char advance();
    [[nodiscard]] bool isAtEnd() const;
    void skipWhitespace();
    void skipLineContinuation();
    Token readIdentifierOrKeyword();
    Token readStringLiteral();
    Token readIntegerLiteral();
};
 
}  // namespace spudplate
 
#endif  // SPUDPLATE_LEXER_H