diff options
Diffstat (limited to 'gfsm/src/atom_alphabet.c')
| -rw-r--r-- | gfsm/src/atom_alphabet.c | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/gfsm/src/atom_alphabet.c b/gfsm/src/atom_alphabet.c new file mode 100644 index 0000000..16f4bdd --- /dev/null +++ b/gfsm/src/atom_alphabet.c @@ -0,0 +1,139 @@ +/*=============================================================================*\ + * 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(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); +} |