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src/libsphinxbase/lm/jsgf_internal.h
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00001 /* -*- c-basic-offset: 4; indent-tabs-mode: nil -*- */
00002 /* ====================================================================
00003  * Copyright (c) 2007 Carnegie Mellon University.  All rights
00004  * reserved.
00005  *
00006  * Redistribution and use in source and binary forms, with or without
00007  * modification, are permitted provided that the following conditions
00008  * are met:
00009  *
00010  * 1. Redistributions of source code must retain the above copyright
00011  *    notice, this list of conditions and the following disclaimer. 
00012  *
00013  * 2. Redistributions in binary form must reproduce the above copyright
00014  *    notice, this list of conditions and the following disclaimer in
00015  *    the documentation and/or other materials provided with the
00016  *    distribution.
00017  *
00018  * This work was supported in part by funding from the Defense Advanced 
00019  * Research Projects Agency and the National Science Foundation of the 
00020  * United States of America, and the CMU Sphinx Speech Consortium.
00021  *
00022  * THIS SOFTWARE IS PROVIDED BY CARNEGIE MELLON UNIVERSITY ``AS IS'' AND 
00023  * ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 
00024  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
00025  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY
00026  * NOR ITS EMPLOYEES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
00027  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
00028  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 
00029  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 
00030  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
00031  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
00032  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00033  *
00034  * ====================================================================
00035  *
00036  */
00037 
00038 #ifndef __JSGF_INTERNAL_H__
00039 #define __JSGF_INTERNAL_H__
00040 
00045 #define YY_NO_UNISTD_H 1
00046 #include <stdio.h>
00047 
00048 #include <sphinxbase/hash_table.h>
00049 #include <sphinxbase/glist.h>
00050 #include <sphinxbase/fsg_model.h>
00051 #include <sphinxbase/logmath.h>
00052 #include <sphinxbase/strfuncs.h>
00053 #include <sphinxbase/jsgf.h>
00054 
00055 #ifdef __cplusplus
00056 extern "C" {
00057 #endif
00058 #if 0
00059 /* Fool Emacs. */
00060 }
00061 #endif
00062 
00063 #define YY_NO_INPUT /* Silence a compiler warning. */
00064 
00065 typedef struct jsgf_rhs_s jsgf_rhs_t;
00066 typedef struct jsgf_atom_s jsgf_atom_t;
00067 typedef struct jsgf_link_s jsgf_link_t;
00068 
00069 struct jsgf_s {
00070     char *version;  
00071     char *charset;  
00072     char *locale;   
00073     char *name;     
00075     hash_table_t *rules;   
00076     hash_table_t *imports; 
00077     jsgf_t *parent;        
00078     glist_t searchpath;    
00080     /* Scratch variables for FSG conversion. */
00081     int nstate;            
00082     glist_t links;         
00083     glist_t rulestack;     
00084 };
00085 
00086 struct jsgf_rule_s {
00087     int refcnt;      
00088     char *name;      
00089     int public;      
00090     jsgf_rhs_t *rhs; 
00092     int entry;       
00093     int exit;        
00094 };
00095 
00096 struct jsgf_rhs_s {
00097     glist_t atoms;   
00098     jsgf_rhs_t *alt; 
00099 };
00100 
00101 struct jsgf_atom_s {
00102     char *name;        
00103     glist_t tags;      
00104     float weight;      
00105 };
00106 
00107 struct jsgf_link_s {
00108     jsgf_atom_t *atom; 
00109     int from;          
00110     int to;            
00111 };
00112 
00113 #define jsgf_atom_is_rule(atom) ((atom)->name[0] == '<')
00114 
00115 void jsgf_add_link(jsgf_t *grammar, jsgf_atom_t *atom, int from, int to);
00116 jsgf_atom_t *jsgf_atom_new(char *name, float weight);
00117 jsgf_atom_t *jsgf_kleene_new(jsgf_t *jsgf, jsgf_atom_t *atom, int plus);
00118 jsgf_rule_t *jsgf_optional_new(jsgf_t *jsgf, jsgf_rhs_t *exp);
00119 jsgf_rule_t *jsgf_define_rule(jsgf_t *jsgf, char *name, jsgf_rhs_t *rhs, int public);
00120 jsgf_rule_t *jsgf_import_rule(jsgf_t *jsgf, char *name);
00121 
00122 int jsgf_atom_free(jsgf_atom_t *atom);
00123 int jsgf_rule_free(jsgf_rule_t *rule);
00124 jsgf_rule_t *jsgf_rule_retain(jsgf_rule_t *rule);
00125 
00126 #ifdef __cplusplus
00127 }
00128 #endif
00129 
00130 
00131 #endif /* __JSGF_H__ */