Edinburgh Speech Tools 2.4-release
EST_FeatureFunctionContext.h
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33
34
35#ifndef __EST_FEATUREFUNCTIONCONTEXT_H__
36#define __EST_FEATUREFUNCTIONCONTEXT_H__
37
38/** A feature function context is the interface through which feature
39 * functions are looked up. It is basically a list of feature function
40 * packages.
41 *
42 * @author Richard Caley <rjc@cstr.ed.ac.uk>
43 * @version $Id: EST_FeatureFunctionContext.h,v 1.3 2004/05/04 00:00:17 awb Exp $ */
44
45#include "ling_class/EST_FeatureFunctionPackage.h"
46
47class ling_class_init;
48
50private:
53
54protected:
55 static EST_FeatureFunctionContext *global;
56
57 void add_package(EST_FeatureFunctionPackage *package);
58 EST_FeatureFunctionPackage *get_package(const EST_String name) const;
59
60 EST_String get_featfunc_name(const EST_Item_featfunc func, int &found) const;
61
62public:
63 static const EST_String separator;
64
67
68 void clear_cache(void);
69 void add_package(const EST_String name);
70 bool package_included(const EST_String name) const;
71 const EST_Item_featfunc get_featfunc(const EST_String name,
72 int must=0);
73 const EST_Item_featfunc get_featfunc(const EST_String package,
74 const EST_String name,
75 int must=0);
76
77protected:
78 static void class_init(void);
79
80 friend class ling_class_init;
81
82 friend void EST_register_feature_function_package(const char *name, void (*init_fn)(EST_FeatureFunctionPackage &p));
83 friend void register_featfunc(const EST_String &name, const EST_Item_featfunc func);
84 friend const EST_Item_featfunc get_featfunc(const EST_String &name,int must);
85 friend EST_String get_featname(const EST_Item_featfunc func);
86};
87
88#endif
89