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/*
* Copyright (c) 1989 University of Maryland
* Department of Computer Science. All rights reserved.
* Permission to copy for any purpose is hereby granted
* so long as this copyright notice remains intact.
*/
/*
* Specials consist of keyword/value groupings, with the simple syntax
* suggested by the BNF
*
* list ::= kv | list ',' kv
* kv ::= word opt_eq words
* opt_eq ::= '=' | <empty>
* words ::= word | words ' ' word
*
* `Words' include any character that is not a space, comma, or quote,
* and can include these by using quoting. Inside and outside quotes,
* `\"' produces `"'; `\\' produces `\'; and `\,' produces `,'.
*
* No single word can exceed WDMAX characters (after quotes are interpreted).
* WDMAX is defined in sdecode.c, and is typically large (>= 1024).
*
* Each special is typed according to its arguments, which are collected
* and decoded, and passed to the special function as ordinary parameters.
* All possible argument-types must be known to the special decoder.
* The function also receives its own name (from the table) as its
* first argument.
*/
/* value argument types */
enum sd_args {
sda_none, /* no arguments, just a flag */
sda_s, /* one string argument (`foo abc') */
sda_d, /* one decimal (i32) argument (`foo 2') */
sda_f, /* one floating (double) argument (`foo 3.14') */
sda_dd, /* two decimal arguments (`foo 3 4') */
sda_ff, /* two floating arguments (`foo .3 .4') */
sda_ddddff, /* four decimal args, then 2 floating args */
sda_nd, /* array n of decimal arguments */
sda_nx, /* array n of hex arguments (`x 1a00 d02f ...') */
sda_rest /* fn(len1, ptr, len2); uses up rest of input */
};
struct sdecode {
char *sd_name; /* keyword to match */
enum sd_args sd_args; /* arguments to collect */
void (*sd_fn)(); /* actual arguments depend on sd_args */
};
void SDecode(/* FILE *, i32, struct sdecode *, size_t */);
void SDsetclass(/* char *spaces, char *semis */);
#define SDsize(tab) ((int)(sizeof(tab) / sizeof(*tab)))
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