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Diffstat (limited to 'media/sphinxbase/src/libsphinxbase/lm/jsgf_internal.h')
-rw-r--r-- | media/sphinxbase/src/libsphinxbase/lm/jsgf_internal.h | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/media/sphinxbase/src/libsphinxbase/lm/jsgf_internal.h b/media/sphinxbase/src/libsphinxbase/lm/jsgf_internal.h new file mode 100644 index 000000000..a5cbc9833 --- /dev/null +++ b/media/sphinxbase/src/libsphinxbase/lm/jsgf_internal.h @@ -0,0 +1,140 @@ +/* -*- c-basic-offset: 4; indent-tabs-mode: nil -*- */ +/* ==================================================================== + * Copyright (c) 2007 Carnegie Mellon University. All rights + * reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * This work was supported in part by funding from the Defense Advanced + * Research Projects Agency and the National Science Foundation of the + * United States of America, and the CMU Sphinx Speech Consortium. + * + * THIS SOFTWARE IS PROVIDED BY CARNEGIE MELLON UNIVERSITY ``AS IS'' AND + * ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, + * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY + * NOR ITS EMPLOYEES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * ==================================================================== + * + */ + +#ifndef __JSGF_INTERNAL_H__ +#define __JSGF_INTERNAL_H__ + +/** + * @file jsgf_internal.h Internal definitions for JSGF grammar compiler + */ + +#include <stdio.h> + +#include <sphinxbase/hash_table.h> +#include <sphinxbase/glist.h> +#include <sphinxbase/fsg_model.h> +#include <sphinxbase/logmath.h> +#include <sphinxbase/strfuncs.h> +#include <sphinxbase/jsgf.h> + + +/* Flex uses strdup which is missing on WinCE */ +#if defined(_WIN32) || defined(_WIN32_WCE) +#define strdup _strdup +#endif + +#ifdef __cplusplus +extern "C" { +#endif +#if 0 +/* Fool Emacs. */ +} +#endif + +#define YY_NO_INPUT /* Silence a compiler warning. */ + +typedef struct jsgf_rhs_s jsgf_rhs_t; +typedef struct jsgf_atom_s jsgf_atom_t; +typedef struct jsgf_link_s jsgf_link_t; +typedef struct jsgf_rule_stack_s jsgf_rule_stack_t; + +struct jsgf_s { + char *version; /**< JSGF version (from header) */ + char *charset; /**< JSGF charset (default UTF-8) */ + char *locale; /**< JSGF locale (default C) */ + char *name; /**< Grammar name */ + + hash_table_t *rules; /**< Defined or imported rules in this grammar. */ + hash_table_t *imports; /**< Pointers to imported grammars. */ + jsgf_t *parent; /**< Parent grammar (if this is an imported one) */ + glist_t searchpath; /**< List of directories to search for grammars. */ + + /* Scratch variables for FSG conversion. */ + int nstate; /**< Number of generated states. */ + glist_t links; /**< Generated FSG links. */ + glist_t rulestack; /**< Stack of currently expanded rules. */ +}; + +/* A type to keep track of the stack of rules currently being expanded. */ +struct jsgf_rule_stack_s { + jsgf_rule_t *rule; /**< The rule being expanded */ + int entry; /**< The entry-state for this expansion */ +}; + +struct jsgf_rule_s { + int refcnt; /**< Reference count. */ + char *name; /**< Rule name (NULL for an alternation/grouping) */ + int is_public; /**< Is this rule marked 'public'? */ + jsgf_rhs_t *rhs; /**< Expansion */ +}; + +struct jsgf_rhs_s { + glist_t atoms; /**< Sequence of items */ + jsgf_rhs_t *alt; /**< Linked list of alternates */ +}; + +struct jsgf_atom_s { + char *name; /**< Rule or token name */ + glist_t tags; /**< Tags, if any (glist_t of char *) */ + float weight; /**< Weight (default 1) */ +}; + +struct jsgf_link_s { + jsgf_atom_t *atom; /**< Name, tags, weight */ + int from; /**< From state */ + int to; /**< To state */ +}; + +#define jsgf_atom_is_rule(atom) ((atom)->name[0] == '<') + +void jsgf_add_link(jsgf_t *grammar, jsgf_atom_t *atom, int from, int to); +jsgf_atom_t *jsgf_atom_new(char *name, float weight); +jsgf_atom_t *jsgf_kleene_new(jsgf_t *jsgf, jsgf_atom_t *atom, int plus); +jsgf_rule_t *jsgf_optional_new(jsgf_t *jsgf, jsgf_rhs_t *exp); +jsgf_rule_t *jsgf_define_rule(jsgf_t *jsgf, char *name, jsgf_rhs_t *rhs, int is_public); +jsgf_rule_t *jsgf_import_rule(jsgf_t *jsgf, char *name); + +int jsgf_atom_free(jsgf_atom_t *atom); +int jsgf_rule_free(jsgf_rule_t *rule); +jsgf_rule_t *jsgf_rule_retain(jsgf_rule_t *rule); + +#ifdef __cplusplus +} +#endif + + +#endif /* __JSGF_H__ */ |