75 lines
2.3 KiB
C
75 lines
2.3 KiB
C
/* autoload.c: Autoloading support.
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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@zoy.org>, 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 "config.h"
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#include "kernel.h"
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Object V_Autoload_Notifyp;
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void Init_Auto (void) {
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Define_Variable (&V_Autoload_Notifyp, "autoload-notify?", False);
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}
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Object P_Autoload (Object sym, Object files) {
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Object al, ret;
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GC_Node3;
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al = Null;
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Check_Type (sym, T_Symbol);
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Check_Loadarg (files);
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GC_Link3 (al, sym, files);
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al = Alloc_Object (sizeof (struct S_Autoload), T_Autoload, 0);
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AUTOLOAD(al)->files = files;
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AUTOLOAD(al)->env = The_Environment;
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al = Cons (al, Null);
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al = Cons (sym, al);
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ret = P_Define (al);
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GC_Unlink;
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return ret;
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}
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Object Do_Autoload (Object sym, Object al) {
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Object val, a[1];
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GC_Node;
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if (Var_Is_True (V_Autoload_Notifyp)) {
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a[0] = AUTOLOAD(al)->files;
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Format (Standard_Output_Port, "[Autoloading ~a]~%", 18, 1, a);
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}
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GC_Link (sym);
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(void)General_Load (AUTOLOAD(al)->files, AUTOLOAD(al)->env);
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GC_Unlink;
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val = SYMBOL(sym)->value;
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if (TYPE(val) == T_Autoload)
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Primitive_Error ("autoloading failed to define ~s", sym);
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return val;
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}
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