mirror of
https://github.com/pnx/m16vm
synced 2026-06-16 03:44:55 +02:00
43 lines
1.5 KiB
C
43 lines
1.5 KiB
C
/* lexer/grammar.h
|
|
*
|
|
* Macros for the grammar.
|
|
*
|
|
* Copyright (C) 2012,2014-2015,2018-2019,2023 Henrik Hautakoski <henrik.hautakoski@gmail.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 2 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, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
|
|
* MA 02110-1301, USA.
|
|
*/
|
|
#ifndef ASM_LEXER_GRAMMAR_H
|
|
#define ASM_LEXER_GRAMMAR_H
|
|
|
|
// Numbers is defined as [0-9]
|
|
#define lexer_is_num(x) ((x) >= '0' && (x) <= '9')
|
|
|
|
// The first digit can however also contain '-'
|
|
#define lexer_is_num_start(x) (lexer_is_num(x) || (x) == '-' )
|
|
|
|
// First character in strings can be [a-z][A-Z] or '_'
|
|
#define lexer_is_string_start(x) \
|
|
( ((x) >= 'a' && (x) <= 'z') \
|
|
|| ((x) >= 'A' && (x) <= 'Z') \
|
|
|| (x) == '_' )
|
|
|
|
// All characters after can also include numbers or ':'
|
|
#define lexer_is_string(x) \
|
|
(lexer_is_string_start(x) || lexer_is_num(x))
|
|
|
|
#define lexer_is_space(x) ((x) == ' ' || (x) == '\t' || (x) == '\r')
|
|
|
|
#endif /* ASM_LEXER_GRAMMAR_H */
|