68 lines
2.0 KiB
C
68 lines
2.0 KiB
C
/* function.c
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*
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* $Id$
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*
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* Copyright 1990, 1991, 1992, 1993, 1994, 1995, Oliver Laumann, Berlin
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* Copyright 2002, 2003 Sam Hocevar <sam@hocevar.net>, Paris
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*
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* This software was derived from Elk 1.2, which was Copyright 1987, 1988,
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* 1989, Nixdorf Computer AG and TELES GmbH, Berlin (Elk 1.2 has been written
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* by Oliver Laumann for TELES Telematic Services, Berlin, in a joint project
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* between TELES and Nixdorf Microprocessor Engineering, Berlin).
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*
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* Oliver Laumann, TELES GmbH, Nixdorf Computer AG and Sam Hocevar, as co-
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* owners or individual owners of copyright in this software, grant to any
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* person or company a worldwide, royalty free, license to
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*
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* i) copy this software,
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* ii) prepare derivative works based on this software,
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* iii) distribute copies of this software or derivative works,
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* iv) perform this software, or
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* v) display this software,
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*
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* provided that this notice is not removed and that neither Oliver Laumann
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* nor Teles nor Nixdorf are deemed to have made any representations as to
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* the suitability of this software for any purpose nor are held responsible
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* for any defects of this software.
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*
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* THERE IS ABSOLUTELY NO WARRANTY FOR THIS SOFTWARE.
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*/
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#include "xt.h"
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static int max_functions = 512;
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static Object Functions;
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int Register_Function (Object x) {
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register int i;
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Object v;
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GC_Node;
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for (i = 0; i < max_functions; i++)
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if (Nullp (VECTOR(Functions)->data[i])) break;
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if (i == max_functions) {
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max_functions *= 2;
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GC_Link (x);
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v = Make_Vector (max_functions, Null);
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GC_Unlink;
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memcpy ((char *)VECTOR(v)->data, (char *)VECTOR(Functions)->data,
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i * sizeof (Object));
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Functions = v;
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}
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VECTOR(Functions)->data[i] = x;
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return i;
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}
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Object Get_Function (int i) {
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return VECTOR(Functions)->data[i];
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}
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void Deregister_Function (int i) {
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VECTOR(Functions)->data[i] = Null;
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}
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void elk_init_xt_function () {
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Functions = Make_Vector (max_functions, Null);
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Global_GC_Link (Functions);
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}
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