include/jsgf.h File Reference

JSGF grammar compiler. More...

#include <stdio.h>
#include <sphinxbase_export.h>
#include <hash_table.h>
#include <fsg_model.h>
#include <logmath.h>

Go to the source code of this file.

Defines
#define	jsgf_rule_iter_next(itor)   hash_table_iter_next(itor)
	Advance an iterator to the next rule in the grammar.
#define	jsgf_rule_iter_rule(itor)   ((jsgf_rule_t *)(itor)->ent->val)
	Get the current rule in a rule iterator.
#define	jsgf_rule_iter_free(itor)   hash_table_iter_free(itor)
	Free a rule iterator (if the end hasn't been reached).
Typedefs
typedef jsgf_s	jsgf_t
typedef jsgf_rule_s	jsgf_rule_t
typedef hash_iter_t	jsgf_rule_iter_t
	Iterator over rules in a grammar.
Functions
SPHINXBASE_EXPORT jsgf_t *	jsgf_grammar_new (jsgf_t *parent)
	Create a new JSGF grammar.
SPHINXBASE_EXPORT jsgf_t *	jsgf_parse_file (const char *filename, jsgf_t *parent)
	Parse a JSGF grammar from a file.
SPHINXBASE_EXPORT void	jsgf_grammar_free (jsgf_t *jsgf)
	Free a JSGF grammar.
SPHINXBASE_EXPORT jsgf_rule_iter_t *	jsgf_rule_iter (jsgf_t *grammar)
	Get an iterator over all rules in a grammar.
SPHINXBASE_EXPORT jsgf_rule_t *	jsgf_get_rule (jsgf_t *grammar, char const *name)
	Get a rule by name from a grammar.
SPHINXBASE_EXPORT char const *	jsgf_rule_name (jsgf_rule_t *rule)
	Get the rule name from a rule.
SPHINXBASE_EXPORT int	jsgf_rule_public (jsgf_rule_t *rule)
	Test if a rule is public or not.
SPHINXBASE_EXPORT fsg_model_t *	jsgf_build_fsg (jsgf_t *grammar, jsgf_rule_t *rule, logmath_t *lmath, float32 lw)
	Build a Sphinx FSG object from a JSGF rule.
SPHINXBASE_EXPORT fsg_model_t *	jsgf_build_fsg_raw (jsgf_t *grammar, jsgf_rule_t *rule, logmath_t *lmath, float32 lw)
	Build a Sphinx FSG object from a JSGF rule.

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Detailed Description

JSGF grammar compiler.

This file defines the data structures for parsing JSGF grammars into Sphinx finite-state grammars.

Definition in file jsgf.h.

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Function Documentation

SPHINXBASE_EXPORT fsg_model_t* jsgf_build_fsg_raw	(	jsgf_t *	grammar,
		jsgf_rule_t *	rule,
		logmath_t *	lmath,
		float32	lw
	)

Build a Sphinx FSG object from a JSGF rule.

This differs from jsgf_build_fsg() in that it does not do closure on epsilon transitions or any other postprocessing. For the time being this is necessary in order to write it to a file - the FSG code will be fixed soon.

Definition at line 500 of file jsgf.c.

References FALSE.

SPHINXBASE_EXPORT jsgf_t* jsgf_grammar_new

(

jsgf_t *

parent

)

Create a new JSGF grammar.

Parameters:

parent

optional parent grammar for this one (NULL, usually).

Returns:

new JSGF grammar object, or NULL on failure.

Definition at line 81 of file jsgf.c.

References ckd_calloc, ckd_salloc, glist_add_ptr(), glist_reverse(), hash_table_new(), jsgf_s::imports, NULL, jsgf_s::rules, and jsgf_s::searchpath.

Referenced by jsgf_parse_file().

SPHINXBASE_EXPORT jsgf_t* jsgf_parse_file	(	const char *	filename,
		jsgf_t *	parent
	)

Parse a JSGF grammar from a file.

Parameters:

	filename	the name of the file to parse.
	parent	optional parent grammar for this one (NULL, usually).

Returns:

new JSGF grammar object, or NULL on failure.

Definition at line 682 of file jsgf.c.

References jsgf_grammar_free(), jsgf_grammar_new(), NULL, and yyparse().

Referenced by jsgf_import_rule().

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