#ifndef LEXER_H
#define LEXER_H

#include <string>
#include <vector>
#include "token.h"

class Lexer {
public:
    Lexer(const std::string& source);
    std::vector<Token> tokenize();

private:
    std::string source;
    size_t position;
    size_t length;
    int line;
    int column;

    std::vector<Token> tokenBuffer;
    int interpolationDepth = 0;
    bool resumingString = false;

    char peek(int offset = 0) const;
    char advance();
    bool isAtEnd() const;
    void skipWhitespace();
    Token makeToken(TokenType type, std::string value);
    Token scanToken();
    Token identifierOrKeyword();
    Token number();
    Token string();
    Token stringPart();
};

#endif // LEXER_H