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view lwasm/input.h @ 555:bbc600db5016
Add \Ln and {Ln} standing for the length of the specified argument in macros
It seems useful to be able to identify the length of a macro argument. Add
argument expansion syntax replaced with the length of the specified
argument:
\Ln or {Ln} will return the length of the nth argument, or zero if there is
no nth argument. Argument 0 is the macro name.
author | William Astle <lost@l-w.ca> |
---|---|
date | Sun, 23 Jul 2023 17:07:58 -0600 |
parents | dd9c5cef2e80 |
children |
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/* input.h Copyright © 2010 William Astle This file is part of LWTOOLS. LWTOOLS 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 <http://www.gnu.org/licenses/>. */ #ifndef ___input_h_seen___ #define ___input_h_seen___ #include "lwasm.h" typedef struct { int magic; } input_stack_entry; void input_stack_push(asmstate_t *as, input_stack_entry *se); input_stack_entry *input_stack_pop(asmstate_t *as, int magic, int (*fn)(input_stack_entry *e, void *data), void *data); void input_init(asmstate_t *as); void input_openstring(asmstate_t *as, char *s, char *str); void input_open(asmstate_t *as, char *s); char *input_readline(asmstate_t *as); char *input_curspec(asmstate_t *as); FILE *input_open_standalone(asmstate_t *as, char *s, char **rfn); int input_isinclude(asmstate_t *as); struct ifl { const char *fn; struct ifl *next; }; extern struct ifl *ifl_head; #endif