/*************************************************************************/
/*                                                                       */
/*                Centre for Speech Technology Research                  */
/*                     University of Edinburgh, UK                       */
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/*************************************************************************/
/*             Author :  Alan W Black                                    */
/*             Date   :  March 1997                                      */
/*-----------------------------------------------------------------------*/
/*                                                                       */
/* This assigns a form of part of speech to tokens.  It is typically use */
/* to assign gross level pos for things before they are converted to     */
/* words, particularly, numbers (ordinals, digitized, years, numbers)    */
/*                                                                       */
/*=======================================================================*/
#include <stdio.h>
#include "festival.h"
#include "tokenP.h"

LISP FT_Token_POS_Utt(LISP utt)
{
    // This module assigns token_pos feature to each token based on the
    // Assoc list of Regex to CART trees in token_pos_cart_trees.
    EST_Utterance *u = get_c_utt(utt);
    EST_Item *t;
    LISP trees,l;

    trees = siod_get_lval("token_pos_cart_trees",NULL);
    if (trees == NIL) return utt;

    for (t=u->relation("Token")->first(); t != 0; t = next(t))
    {
	if (t->f("token_pos","0") == "0")
	    for (l=trees; l != NIL; l=cdr(l))  // find a tree that matches
	    {
		if (t->name().matches(make_regex(get_c_string(car(car(l))))))
		{
		    t->set_val("token_pos",
				 wagon_predict(t,car(cdr(car(l)))));
		    break;
		}
	    }
    }

    return utt;

}
