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yap-6.3/H/blobs.h

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2015-07-23 01:19:35 +01:00
//
// blobs.h
// yap
//
// Created by VITOR SANTOS COSTA on 09/05/15.
// Copyright (c) 2015 VITOR SANTOS COSTA. All rights reserved.
//
// based on the SWI Blob implementation, an extension of atoms for SWI-Prolog
#ifndef BLOBS_H
#define BLOBS_H
#if !defined(X_API) && !defined(SWIGYAP)
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#if (defined(_MSC_VER) || defined(__MINGW32__)) && defined(PL_KERNEL)
#define X_API __declspec(dllexport)
#else
#define X_API
#endif
#endif
/*******************************
* BLOBS *
*******************************/
#define YAP_BLOB_MAGIC_B 0x75293a00 /* Magic to validate a blob-type */
#define PL_BLOB_VERSION (YAP_BLOB_MAGIC_B|PL_BLOB_VERSION)
#define PL_BLOB_UNIQUE 0x01 /* Blob content is unique */
#define PL_BLOB_TEXT 0x02 /* blob contains text */
#define PL_BLOB_NOCOPY 0x04 /* do not copy the data */
#define PL_BLOB_WCHAR 0x08 /* wide character string */
typedef struct YAP_blob_t
{ uintptr_t magic; /* YAP_BLOB_MAGIC */
uintptr_t flags; /* YAP_BLOB_* */
char * name; /* name of the type */
int (*release)(Atom a);
int (*compare)(Atom a, Atom b);
#ifdef SIO_MAGIC
int (*write)(FILE *s, Atom a, int flags);
#else
int (*write)(void *s, Atom a, int flags);
#endif
void (*acquire)(Atom a);
#ifdef SIO_MAGIC
int (*save)(Atom a, FILE *s);
Atom (*load)(FILE *s);
#else
int (*save)(Atom a, void*);
Atom (*load)(void *s);
#endif
/* private */
void * reserved[10]; /* for future extension */
int registered; /* Already registered? */
int rank; /* Rank for ordering atoms */
struct YAP_blob_t * next; /* next in registered type-chain */
Atom atom_name; /* Name as atom */
} blob_type_t;
int Yap_write_blob(AtomEntry *ref, FILE *stream);
char * Yap_blob_to_string(AtomEntry *ref, const char *s, size_t sz);
X_API bool YAP_is_blob(YAP_Term t, blob_type_t **type);
X_API bool YAP_unify_blob(YAP_Term *t, void *blob, size_t len,
blob_type_t *type);
X_API bool YAP_put_blob(YAP_Term *t, void *blob, size_t len,
blob_type_t *type);
X_API bool YAP_get_blob(YAP_Term t, void **blob, size_t *len,
blob_type_t **type);
X_API void* YAP_blob_data(Atom a,
size_t *len,
struct YAP_blob_t **type);
X_API void YAP_register_blob_type(blob_type_t *type);
X_API blob_type_t* YAP_find_blob_type(const char* name);
//YAP_blob_type_t* YAP_find_blob_type(Atom at);
X_API bool YAP_unregister_blob_type(blob_type_t *type);
#endif