#ifndef LEX_H
#define LEX_H

#include <stddef.h>

typedef struct {
    size_t idx;
    int line;
    int col;
} Loc;

typedef enum {
    Tok_Eof,
    Tok_Ident,
    Tok_Int,
    Tok_Str,
    Tok_Char,
    Tok_If,
    Tok_Nl = '\n',
    Tok_LParen = '(',
    Tok_RParen = ')',
    Tok_LBrace = '{',
    Tok_RBrace = '}',
} TokTy;

typedef struct {
    TokTy ty;
    Loc loc;
    size_t len;
} Tok;

typedef struct {
    const char* text;
    size_t idx;
    int line;
    int col;
    char ch;
} Lexer;

Tok lexer_next(Lexer* l);

#endif