SphinxBase
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This file implements the data structures for parsing JSGF grammars into Sphinx finite-state grammars. More...
#include <string.h>
#include <assert.h>
#include "sphinxbase/ckd_alloc.h"
#include "sphinxbase/strfuncs.h"
#include "sphinxbase/hash_table.h"
#include "sphinxbase/filename.h"
#include "sphinxbase/err.h"
#include "sphinxbase/jsgf.h"
#include "jsgf_internal.h"
#include "jsgf_parser.h"
#include "jsgf_scanner.h"
Go to the source code of this file.
Macros | |
#define | NO_NODE -1 |
#define | RECURSIVE_NODE -2 |
Functions | |
int | yyparse (void *scanner, jsgf_t *jsgf) |
jsgf_atom_t * | jsgf_atom_new (char *name, float weight) |
int | jsgf_atom_free (jsgf_atom_t *atom) |
jsgf_t * | jsgf_grammar_new (jsgf_t *parent) |
Create a new JSGF grammar. More... | |
void | jsgf_grammar_free (jsgf_t *jsgf) |
Free a JSGF grammar. | |
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) |
void | jsgf_add_link (jsgf_t *grammar, jsgf_atom_t *atom, int from, int to) |
char const * | jsgf_grammar_name (jsgf_t *jsgf) |
Get the grammar name from the file. | |
jsgf_rule_iter_t * | jsgf_rule_iter (jsgf_t *grammar) |
Get an iterator over all rules in a grammar. | |
jsgf_rule_t * | jsgf_get_rule (jsgf_t *grammar, char const *name) |
Get a rule by name from a grammar. More... | |
jsgf_rule_t * | jsgf_get_public_rule (jsgf_t *grammar) |
Returns the first public rule of the grammar. | |
char const * | jsgf_rule_name (jsgf_rule_t *rule) |
Get the rule name from a rule. | |
int | jsgf_rule_public (jsgf_rule_t *rule) |
Test if a rule is public or not. | |
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. | |
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. More... | |
fsg_model_t * | jsgf_read_file (const char *file, logmath_t *lmath, float32 lw) |
Read JSGF from file and return FSG object from it. More... | |
fsg_model_t * | jsgf_read_string (const char *string, logmath_t *lmath, float32 lw) |
Read JSGF from string and return FSG object from it. More... | |
int | jsgf_write_fsg (jsgf_t *grammar, jsgf_rule_t *rule, FILE *outfh) |
Convert a JSGF rule to Sphinx FSG text form. More... | |
jsgf_rule_t * | jsgf_define_rule (jsgf_t *jsgf, char *name, jsgf_rhs_t *rhs, int is_public) |
jsgf_rule_t * | jsgf_rule_retain (jsgf_rule_t *rule) |
int | jsgf_rule_free (jsgf_rule_t *rule) |
jsgf_rule_t * | jsgf_import_rule (jsgf_t *jsgf, char *name) |
jsgf_t * | jsgf_parse_file (const char *filename, jsgf_t *parent) |
Parse a JSGF grammar from a file. More... | |
jsgf_t * | jsgf_parse_string (const char *string, jsgf_t *parent) |
Parse a JSGF grammar from a string. More... | |
This file implements the data structures for parsing JSGF grammars into Sphinx finite-state grammars.
Definition in file jsgf.c.
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 592 of file jsgf.c.
Referenced by jsgf_write_fsg().
jsgf_rule_t* jsgf_get_rule | ( | jsgf_t * | grammar, |
const char * | name | ||
) |
Get a rule by name from a grammar.
Name should not contain brackets.
Definition at line 469 of file jsgf.c.
References ckd_free(), hash_table_lookup(), jsgf_s::rules, and string_join().
Create a new JSGF grammar.
parent | optional parent grammar for this one (NULL, usually). |
Definition at line 86 of file jsgf.c.
References ckd_calloc, hash_table_new(), jsgf_s::imports, jsgf_s::parent, jsgf_s::rules, and jsgf_s::searchpath.
Referenced by jsgf_parse_file(), and jsgf_parse_string().
Parse a JSGF grammar from a file.
filename | the name of the file to parse. |
parent | optional parent grammar for this one (NULL, usually). |
Definition at line 896 of file jsgf.c.
References E_ERROR, E_ERROR_SYSTEM, jsgf_grammar_free(), and jsgf_grammar_new().
Referenced by jsgf_read_file().
Parse a JSGF grammar from a string.
0-terminated | string with grammar. |
parent | optional parent grammar for this one (NULL, usually). |
Definition at line 937 of file jsgf.c.
References E_ERROR, jsgf_grammar_free(), and jsgf_grammar_new().
Referenced by jsgf_read_string().
fsg_model_t* jsgf_read_file | ( | const char * | file, |
logmath_t * | lmath, | ||
float32 | lw | ||
) |
Read JSGF from file and return FSG object from it.
This function looks for a first public rule in jsgf and constructs JSGF from it.
Definition at line 599 of file jsgf.c.
References E_ERROR, jsgf_build_fsg(), jsgf_grammar_free(), jsgf_parse_file(), jsgf_rule_iter(), jsgf_rule_iter_free, jsgf_rule_iter_next, jsgf_rule_iter_rule, and jsgf_rule_public().
fsg_model_t* jsgf_read_string | ( | const char * | string, |
logmath_t * | lmath, | ||
float32 | lw | ||
) |
Read JSGF from string and return FSG object from it.
This function looks for a first public rule in jsgf and constructs JSGF from it.
Definition at line 630 of file jsgf.c.
References E_ERROR, jsgf_build_fsg(), jsgf_grammar_free(), jsgf_parse_string(), jsgf_rule_iter(), jsgf_rule_iter_free, jsgf_rule_iter_next, jsgf_rule_iter_rule, and jsgf_rule_public().
int jsgf_write_fsg | ( | jsgf_t * | grammar, |
jsgf_rule_t * | rule, | ||
FILE * | outfh | ||
) |
Convert a JSGF rule to Sphinx FSG text form.
This does a direct conversion without doing transitive closure on null transitions and so forth.
Definition at line 663 of file jsgf.c.
References jsgf_build_fsg_raw(), logmath_free(), and logmath_init().