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1fa86ca526
* convert.c, convert.h, convert.i.c: New files containing C
array to Scheme conversion helpers meant to be replacement
functions for the deprecated gh interface.
* Makefile.am: Setup rules for new `convert.*' files.
2002-01-31 Stefan Jahn <stefan@lkcc.org>
* configure.in: Add -DLIBLTDL_DLL_IMPORT to INCLTDL when using
`libltdl.dll'.
247 lines
5.9 KiB
C
247 lines
5.9 KiB
C
/* this file is #include'd (x times) by convert.c */
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/* FIXME: Should we use exported wrappers for malloc (and free), which
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* allow windows DLLs to call the correct freeing function? */
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/* Convert a vector, weak vector, (if possible string, substring), list
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or uniform vector into an C array. If result array in argument 2 is
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NULL, malloc() a new one. If out of memory, return NULL. */
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#define FUNC_NAME SCM2CTYPES_FN
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CTYPE *
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SCM2CTYPES (SCM obj, CTYPE *data)
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{
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long i, n;
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SCM val;
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SCM_ASSERT (SCM_NIMP (obj) || SCM_NFALSEP (scm_list_p (obj)),
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obj, SCM_ARG1, FUNC_NAME);
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if (SCM_NFALSEP (scm_list_p (obj)))
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{
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SCM list = obj;
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for (n = 0; SCM_NFALSEP (scm_pair_p (list)); list = SCM_CDR (list), n++)
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{
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val = SCM_CAR (list);
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#if defined (CTYPEMIN) && defined (CTYPEMAX)
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if (SCM_INUMP (val))
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{
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long v = SCM_INUM (val);
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SCM_ASSERT_RANGE (SCM_ARG1, obj, v >= CTYPEMIN && v <= CTYPEMAX);
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}
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else
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#elif defined (FLOATTYPE1)
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if (!SCM_INUMP (val) && !(SCM_BIGP (val) || SCM_REALP (val)))
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#else
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if (!SCM_INUMP (val) && !SCM_BIGP (val))
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#endif
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SCM_WRONG_TYPE_ARG (SCM_ARG1, obj);
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}
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if (data == NULL)
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data = (CTYPE *) malloc (n * sizeof (CTYPE));
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if (data == NULL)
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return NULL;
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list = obj;
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for (i = 0; SCM_NFALSEP (scm_pair_p (list)); list = SCM_CDR (list), i++)
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{
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val = SCM_CAR (list);
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if (SCM_INUMP (val))
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data[i] = SCM_INUM (val);
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else if (SCM_BIGP (val))
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data[i] = (CTYPE) scm_num2long (val, SCM_ARG1, FUNC_NAME);
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#ifdef FLOATTYPE1
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else
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data[i] = (CTYPE) SCM_REAL_VALUE (val);
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#endif
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}
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return data;
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}
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switch (SCM_TYP7 (obj))
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{
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case scm_tc7_vector:
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case scm_tc7_wvect:
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n = SCM_VECTOR_LENGTH (obj);
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for (i = 0; i < n; i++)
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{
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val = SCM_VELTS (obj)[i];
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#if defined (CTYPEMIN) && defined (CTYPEMAX)
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if (SCM_INUMP (val))
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{
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long v = SCM_INUM (val);
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SCM_ASSERT_RANGE (SCM_ARG1, obj, v >= CTYPEMIN && v <= CTYPEMAX);
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}
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else
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#elif defined (FLOATTYPE1)
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if (!SCM_INUMP (val) && !(SCM_BIGP (val) || SCM_REALP (val)))
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#else
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if (!SCM_INUMP (val) && !SCM_BIGP (val))
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#endif
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SCM_WRONG_TYPE_ARG (SCM_ARG1, obj);
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}
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if (data == NULL)
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data = (CTYPE *) malloc (n * sizeof (CTYPE));
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if (data == NULL)
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return NULL;
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for (i = 0; i < n; i++)
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{
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val = SCM_VELTS (obj)[i];
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if (SCM_INUMP (val))
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data[i] = (CTYPE) SCM_INUM (val);
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else if (SCM_BIGP (val))
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data[i] = (CTYPE) scm_num2long (val, SCM_ARG1, FUNC_NAME);
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#ifdef FLOATTYPE1
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else
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data[i] = (CTYPE) SCM_REAL_VALUE (val);
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#endif
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}
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break;
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#ifdef HAVE_ARRAYS
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case ARRAYTYPE1:
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#ifdef ARRAYTYPE2
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case ARRAYTYPE2:
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#endif
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n = SCM_UVECTOR_LENGTH (obj);
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if (data == NULL)
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data = (CTYPE *) malloc (n * sizeof (CTYPE));
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if (data == NULL)
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return NULL;
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#ifdef FLOATTYPE2
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if (SCM_TYP7 (obj) == ARRAYTYPE2)
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{
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for (i = 0; i < n; i++)
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data[i] = ((FLOATTYPE2 *) SCM_UVECTOR_BASE (obj))[i];
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}
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else
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#endif
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memcpy (data, (CTYPE *) SCM_UVECTOR_BASE (obj), n * sizeof (CTYPE));
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break;
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#endif /* HAVE_ARRAYS */
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#ifdef STRINGTYPE
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case scm_tc7_string:
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n = SCM_STRING_LENGTH (obj);
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if (data == NULL)
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data = (CTYPE *) malloc (n * sizeof (CTYPE));
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if (data == NULL)
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return NULL;
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memcpy (data, SCM_STRING_CHARS (obj), n * sizeof (CTYPE));
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break;
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#endif /* STRINGTYPE */
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default:
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SCM_WRONG_TYPE_ARG (SCM_ARG1, obj);
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}
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return data;
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}
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#undef FUNC_NAME
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#if HAVE_ARRAYS
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/* Converts a C array into a uniform vector, returns SCM_UNDEFINED if out
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of memory. */
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#define FUNC_NAME CTYPES2UVECT_FN
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SCM
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CTYPES2UVECT (const CTYPE *data, long n)
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{
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char *v;
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SCM_ASSERT_RANGE (SCM_ARG2, scm_long2num (n),
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n > 0 && n <= SCM_UVECTOR_MAX_LENGTH);
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if ((v = (char *) SCM_MUST_MALLOC_TYPE_NUM (CTYPE, n)) == NULL)
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return SCM_UNDEFINED;
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memcpy (v, data, n * sizeof (CTYPE));
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return scm_alloc_cell (SCM_MAKE_UVECTOR_TAG (n, UVECTTYPE), (scm_t_bits) v);
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}
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#undef FUNC_NAME
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#ifdef UVECTTYPE2
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#define FUNC_NAME CTYPES2UVECT_FN2
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SCM
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CTYPES2UVECT2 (const unsigned CTYPE *data, long n)
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{
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char *v;
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SCM_ASSERT_RANGE (SCM_ARG2, scm_long2num (n),
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n > 0 && n <= SCM_UVECTOR_MAX_LENGTH);
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if ((v = (char *) SCM_MUST_MALLOC_TYPE_NUM (unsigned CTYPE, n)) == NULL)
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return SCM_UNDEFINED;
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memcpy (v, data, n * sizeof (unsigned CTYPE));
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return scm_alloc_cell (SCM_MAKE_UVECTOR_TAG (n, UVECTTYPE2), (scm_t_bits) v);
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}
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#undef FUNC_NAME
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#endif /* UVECTTYPE2 */
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#endif /* HAVE_ARRAYS */
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/* Converts a C array into a vector. */
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#define FUNC_NAME CTYPES2SCM_FN
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SCM
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CTYPES2SCM (const CTYPE *data, long n)
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{
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long i;
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SCM v, *velts;
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SCM_ASSERT_RANGE (SCM_ARG2, scm_long2num (n),
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n > 0 && n <= SCM_VECTOR_MAX_LENGTH);
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v = scm_c_make_vector (n, SCM_UNSPECIFIED);
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velts = SCM_VELTS (v);
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for (i = 0; i < n; i++)
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#ifdef FLOATTYPE1
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velts[i] = scm_make_real ((double) data[i]);
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#elif defined (CTYPEFIXABLE)
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velts[i] = SCM_MAKINUM (data[i]);
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#else
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velts[i] = (SCM_FIXABLE (data[i]) ? SCM_MAKINUM (data[i]) :
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scm_i_long2big (data[i]));
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#endif
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return v;
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}
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#undef FUNC_NAME
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/* cleanup of conditionals */
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#undef SCM2CTYPES
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#undef SCM2CTYPES_FN
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#undef CTYPES2SCM
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#undef CTYPES2SCM_FN
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#undef CTYPE
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#undef CTYPES2UVECT
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#undef CTYPES2UVECT_FN
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#ifdef CTYPEFIXABLE
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#undef CTYPEFIXABLE
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#endif
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#undef UVECTTYPE
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#ifdef UVECTTYPE2
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#undef CTYPES2UVECT2
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#undef CTYPES2UVECT_FN2
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#undef UVECTTYPE2
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#endif
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#ifdef CTYPEMIN
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#undef CTYPEMIN
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#endif
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#ifdef CTYPEMAX
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#undef CTYPEMAX
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#endif
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#undef ARRAYTYPE1
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#ifdef ARRAYTYPE2
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#undef ARRAYTYPE2
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#endif
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#ifdef FLOATTYPE1
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#undef FLOATTYPE1
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#endif
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#ifdef FLOATTYPE2
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#undef FLOATTYPE2
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#endif
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#ifdef STRINGTYPE
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#undef STRINGTYPE
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#endif
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/*
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Local Variables:
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c-file-style: "gnu"
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End:
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*/
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