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/*
* Copyright (C) 2025 Johnny Richard <johnny@johnnyrichard.com>
*
* SPDX-License-Identifier: LGPL-3.0-or-later
*
* This file is part of obe.
*
* obe is free software: you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free
* Software Foundation, either version 3 of the License, or (at your option)
* any later version.
*
* obe is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with obe. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef OBE_LEXER_H
#define OBE_LEXER_H
#include <obe/string.h>
#include <stddef.h>
typedef enum obe_token_kind
{
TOKEN_KW_RETURN,
TOKEN_KW_FN,
TOKEN_KW_BR,
TOKEN_IDENT,
TOKEN_LABEL,
TOKEN_NUMBER,
TOKEN_INT,
TOKEN_EQ,
TOKEN_COLON,
TOKEN_SEMICOLON,
TOKEN_LBRACE,
TOKEN_RBRACE,
TOKEN_EOF,
TOKEN_UNKOWN
} obe_token_kind_t;
typedef struct obe_lexer_loc
{
size_t offset;
size_t lineoffset;
size_t lineno;
} obe_lexer_loc_t;
typedef struct obe_token
{
obe_token_kind_t kind;
obe_string_t value;
obe_lexer_loc_t loc;
} obe_token_t;
typedef struct obe_lexer
{
char* filename;
obe_string_t source;
obe_lexer_loc_t loc;
} obe_lexer_t;
void
obe_lexer_init(obe_lexer_t* lexer, char* filename);
bool
obe_lexer_is_eof(obe_lexer_t* lexer);
char
obe_lexer_current_char(obe_lexer_t* lexer);
char
obe_lexer_next_char(obe_lexer_t* lexer);
void
obe_lexer_next_token(obe_lexer_t* lexer, obe_token_t* token);
char*
obe_token_to_cstr(obe_token_kind_t kind);
#endif /* OBE_LEXER_H */
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