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#ifndef AMALGAM_TOKENIZER_H
#define AMALGAM_TOKENIZER_H
#include "buffer_view.h"
#include "misc.h"
#define TOKENIZER_OK 0
#define TOKENIZER_UNEXPECTED_TOKEN -1
typedef enum {
TOK_NONE,
TOK_END_OF_FILE,
TOK_IDENTIFIER,
TOK_CONST,
TOK_VAR,
TOK_EQUALS,
TOK_OPEN_PAREN,
TOK_CLOSING_PAREN,
TOK_OPEN_BRACE,
TOK_CLOSING_BRACE
} Token;
typedef struct {
BufferView code;
int index;
int prev_index;
int line;
union {
BufferView identifier;
} value;
} Tokenizer;
CHECK_RESULT int tokenizer_init(Tokenizer *self, BufferView code);
void tokenizer_deinit(Tokenizer *self);
CHECK_RESULT int tokenizer_next(Tokenizer *self, Token *token);
CHECK_RESULT int tokenizer_accept(Tokenizer *self, Token expected_token);
/*
@result is set to 0 if the next token is equal to @expected_token,
otherwise @result is set to 1
*/
CHECK_RESULT int tokenizer_consume_if(Tokenizer *self, Token expected_token, bool *result);
void tokenizer_print_error(Tokenizer *self, const char *fmt, ...);
#endif
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