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/*
* Copyright (C) 2025 Johnny Richard <johnny@johnnyrichard.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef LEXER_H
#define LEXER_H
#include "string_view.h"
typedef enum token_kind
{
TOKEN_KW_PUSH,
TOKEN_KW_DUP,
TOKEN_KW_COPY,
TOKEN_KW_SWAP,
TOKEN_KW_DROP,
TOKEN_KW_SLIDE,
TOKEN_KW_ADD,
TOKEN_KW_SUB,
TOKEN_KW_MUL,
TOKEN_KW_DIV,
TOKEN_KW_MOD,
TOKEN_KW_STORE,
TOKEN_KW_LOAD,
TOKEN_KW_CALL,
TOKEN_KW_RET,
TOKEN_KW_JMP,
TOKEN_KW_JMPZ,
TOKEN_KW_JMPN,
TOKEN_KW_PRINTI,
TOKEN_KW_PRINTC,
TOKEN_KW_READI,
TOKEN_KW_READC,
TOKEN_KW_END,
TOKEN_EOS,
TOKEN_NUMBER,
TOKEN_IDENT,
TOKEN_COLON,
TOKEN_UNKOWN,
TOKEN_EOF
} token_kind_t;
typedef struct lex_loc
{
size_t offset;
size_t lineoffset;
size_t lineno;
} lex_loc_t;
typedef struct token
{
token_kind_t kind;
string_view_t value;
lex_loc_t loc;
} token_t;
typedef struct lexer
{
char* file_name;
string_view_t source;
lex_loc_t loc;
} lexer_t;
void
lexer_init(lexer_t* lexer, char* file_name);
bool
lexer_is_eof(lexer_t* lexer);
char
lexer_current_char(lexer_t* lexer);
char
lexer_next_char(lexer_t* lexer);
void
lexer_next_token(lexer_t* lexer, token_t* token);
char*
token_to_cstr(token_kind_t kind);
#endif /* LEXER_H */
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