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/*=============================================================================*\
* File: atom_alphabet.c
* Author: Bryan Jurish <moocow@ling.uni-potsdam.de>
* Description: finite state automata for Pd: atom alphabet
*
* Copyright (c) 2004 Bryan Jurish.
*
* For information on usage and redistribution, and for a DISCLAIMER OF ALL
* WARRANTIES, see the file, "LICENSE.txt," in this distribution.
*
* 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.
*
* See file LICENSE for further informations on licensing terms.
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*=============================================================================*/
#include <atom_alphabet.h>
#include <string.h>
/*======================================================================
* constants
*/
gfsmUserAlphabetMethods pd_atom_alphabet_methods =
{
NULL, //-- key->label lookup function
NULL, //-- label->key lookup function
NULL, //-- insertion function: receives a newly copied key!
NULL, //-- label removal function
(gfsmAlphabetKeyReadFunc)gfsm_pd_atom_read, //-- key input function
(gfsmAlphabetKeyWriteFunc)gfsm_pd_atom_write //-- key output function
};
/*======================================================================
* gfsmPdAtomAlphabet: user methods
*/
/*--------------------------------------------------------------
* hash()
*/
guint gfsm_pd_atom_hash(t_atom *a)
{
if (!a) return 0;
switch (a->a_type) {
case A_FLOAT: return (guint)(a->a_w.w_float);
case A_SYMBOL: return (guint)(a->a_w.w_symbol);
case A_SEMI: return (guint)';';
case A_COMMA: return (guint)',';
default: return 0;
}
return 0; //-- never reached
}
/*--------------------------------------------------------------
* equal()
*/
gboolean gfsm_pd_atom_equal(t_atom *a1, t_atom *a2)
{
if (a1->a_type != a2->a_type) return FALSE;
switch (a1->a_type) {
case A_FLOAT: return a1->a_w.w_float == a2->a_w.w_float;
case A_SYMBOL: return a1->a_w.w_symbol == a2->a_w.w_symbol;
default: return memcmp(a1,a2,sizeof(t_atom))==0;
}
}
/*--------------------------------------------------------------
* dup()
*/
t_atom *gfsm_pd_atom_dup(GFSM_UNUSED gfsmPdAtomAlphabet *alph, t_atom *a)
{
//return (a ? copybytes(a, sizeof(t_atom)) : NULL);
return (a ? gfsm_mem_dup_n(a,sizeof(t_atom)) : NULL);
}
/*--------------------------------------------------------------
* free()
*/
void gfsm_pd_atom_free(t_atom *a)
{ g_free(a); }
/*--------------------------------------------------------------
* read()
*/
t_atom *gfsm_pd_atom_read(gfsmPdAtomAlphabet *alph, GString *gstr)
{
binbuf_clear(alph->aa_binbuf);
binbuf_text(alph->aa_binbuf, gstr->str, gstr->len);
return binbuf_getvec(alph->aa_binbuf);
}
/*--------------------------------------------------------------
* write()
*/
void gfsm_pd_atom_write(gfsmPdAtomAlphabet *alph, t_atom *a, GString *gstr)
{
atom_string(a, alph->aa_strbuf, PdGfsmStrBufSize);
g_string_assign(gstr, alph->aa_strbuf);
}
/*======================================================================
* gfsmPdAtomAlphabet: shortcuts
*/
/*--------------------------------------------------------------
* new
*/
gfsmPdAtomAlphabet *gfsm_pd_atom_alphabet_new(void)
{
gfsmPdAtomAlphabet *alph = g_new0(gfsmPdAtomAlphabet,1);
((gfsmAlphabet*)alph)->type = gfsmATUser;
gfsm_user_alphabet_init((gfsmUserAlphabet*)alph,
(gfsmAlphabetKeyDupFunc)gfsm_pd_atom_dup,
(GHashFunc)gfsm_pd_atom_hash,
(GEqualFunc)gfsm_pd_atom_equal,
(GDestroyNotify)gfsm_pd_atom_free,
NULL,
&pd_atom_alphabet_methods);
alph->aa_binbuf = binbuf_new();
return alph;
}
//-- destructor
void gfsm_pd_atom_alphabet_free(gfsmPdAtomAlphabet *alph)
{
if (alph->aa_binbuf) binbuf_free(alph->aa_binbuf);
gfsm_alphabet_free((gfsmAlphabet*)alph);
}
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