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- /* Mocklisp compatibility functions for GNU Emacs Lisp interpreter.
- Copyright (C) 1985, 1986 Free Software Foundation, Inc.
-
- This file is part of GNU Emacs.
-
- GNU Emacs is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 1, or (at your option)
- any later version.
-
- GNU Emacs is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with GNU Emacs; see the file COPYING. If not, write to
- the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
-
- /* Compatibility for mocklisp */
-
- #include "config.h"
- #include "lisp.h"
- #include "buffer.h"
-
- /* Now in lisp code ("macrocode...")
- * DEFUN ("ml-defun", Fml_defun, Sml_defun, 0, UNEVALLED, 0,
- * "Define mocklisp functions")
- * (args)
- * Lisp_Object args;
- * {
- * Lisp_Object elt;
- *
- * while (!NULL (args))
- * {
- * elt = Fcar (args);
- * Ffset (Fcar (elt), Fcons (Qmocklisp, Fcdr (elt)));
- * args = Fcdr (args);
- * }
- * return Qnil;
- * }
- */
-
- DEFUN ("ml-if", Fml_if, Sml_if, 0, UNEVALLED, 0, "if for mocklisp programs")
- (args)
- Lisp_Object args;
- {
- register Lisp_Object val;
- struct gcpro gcpro1;
-
- GCPRO1 (args);
- while (!NULL (args))
- {
- val = Feval (Fcar (args));
- args = Fcdr (args);
- if (NULL (args)) break;
- if (XINT (val))
- {
- val = Feval (Fcar (args));
- break;
- }
- args = Fcdr (args);
- }
- UNGCPRO;
- return val;
- }
-
- /* Now converted to regular "while" by hairier conversion code.
- * DEFUN ("ml-while", Fml_while, Sml_while, 1, UNEVALLED, 0, "while for mocklisp programs")
- * (args)
- * Lisp_Object args;
- * {
- * Lisp_Object test, body, tem;
- * struct gcpro gcpro1, gcpro2;
- *
- * GCPRO2 (test, body);
- *
- * test = Fcar (args);
- * body = Fcdr (args);
- * while (tem = Feval (test), XINT (tem))
- * {
- * QUIT;
- * Fprogn (body);
- * }
- *
- * UNGCPRO;
- * return Qnil;
- *}
-
- /* This is the main entry point to mocklisp execution.
- When eval sees a mocklisp function being called, it calls here
- with the unevaluated argument list */
-
- Lisp_Object
- ml_apply (function, args)
- Lisp_Object function, args;
- {
- register int count = specpdl_ptr - specpdl;
- register Lisp_Object val;
-
- specbind (Qmocklisp_arguments, args);
- val = Fprogn (Fcdr (function));
- unbind_to (count);
- return val;
- }
-
- DEFUN ("ml-nargs", Fml_nargs, Sml_nargs, 0, 0, 0, "# arguments to this mocklisp function")
- ()
- {
- if (EQ (Vmocklisp_arguments, Qinteractive))
- return make_number (0);
- return Flength (Vmocklisp_arguments);
- }
-
- DEFUN ("ml-arg", Fml_arg, Sml_arg, 1, 2, 0, "Argument #N to this mocklisp function.")
- (n, prompt)
- Lisp_Object n, prompt;
- {
- if (EQ (Vmocklisp_arguments, Qinteractive))
- return Fread_string (prompt, Qnil);
- CHECK_NUMBER (n, 0);
- XSETINT (n, XINT (n) - 1); /* Mocklisp likes to be origin-1 */
- return Fcar (Fnthcdr (n, Vmocklisp_arguments));
- }
-
- DEFUN ("ml-interactive", Fml_interactive, Sml_interactive, 0, 0, 0,
- "True if this mocklisp function was called interactively.")
- ()
- {
- return (EQ (Vmocklisp_arguments, Qinteractive)) ? Qt : Qnil;
- }
-
- DEFUN ("ml-provide-prefix-argument", Fml_provide_prefix_argument, Sml_provide_prefix_argument,
- 2, UNEVALLED, 0,
- "Evaluate second argument, using first argument as prefix arg value.")
- (args)
- Lisp_Object args;
- {
- struct gcpro gcpro1;
- GCPRO1 (args);
- Vcurrent_prefix_arg = Feval (Fcar (args));
- UNGCPRO;
- return Feval (Fcar (Fcdr (args)));
- }
-
- DEFUN ("ml-prefix-argument-loop", Fml_prefix_argument_loop, Sml_prefix_argument_loop,
- 0, UNEVALLED, 0,
- "")
- (args)
- Lisp_Object args;
- {
- register Lisp_Object tem;
- register int i;
- struct gcpro gcpro1;
-
- /* Set `arg' in case we call a built-in function that looks at it. Still are a few. */
- if (NULL (Vcurrent_prefix_arg))
- i = 1;
- else
- {
- tem = Vcurrent_prefix_arg;
- if (CONSP (tem))
- tem = Fcar (tem);
- if (EQ (tem, Qminus))
- i = -1;
- else i = XINT (tem);
- }
-
- GCPRO1 (args);
- while (i-- > 0)
- Fprogn (args);
- UNGCPRO;
- return Qnil;
- }
-
- #ifdef NOTDEF /* Now in mlsupport.el */
-
- DEFUN ("ml-substr", Fml_substr, Sml_substr, 3, 3, 0,
- "Return a substring of STRING, starting at index FROM and of length LENGTH.\n\
- If either FROM or LENGTH is negative, the length of STRING is added to it.")
- (string, from, to)
- Lisp_Object string, from, to;
- {
- CHECK_STRING (string, 0);
- CHECK_NUMBER (from, 1);
- CHECK_NUMBER (to, 2);
-
- if (XINT (from) < 0)
- XSETINT (from, XINT (from) + XSTRING (string)->size);
- if (XINT (to) < 0)
- XSETINT (to, XINT (to) + XSTRING (string)->size);
- XSETINT (to, XINT (to) + XINT (from));
- return Fsubstring (string, from, to);
- }
- #endif NOTDEF
- DEFUN ("insert-string", Finsert_string, Sinsert_string, 0, MANY, 0,
- "Mocklisp-compatibility insert function.\n\
- Like the function `insert' except that any argument that is a number\n\
- is converted into a string by expressing it in decimal.")
- (nargs, args)
- int nargs;
- Lisp_Object *args;
- {
- register int argnum;
- register Lisp_Object tem;
-
- for (argnum = 0; argnum < nargs; argnum++)
- {
- tem = args[argnum];
- retry:
- if (XTYPE (tem) == Lisp_Int)
- tem = Fint_to_string (tem);
- if (XTYPE (tem) == Lisp_String)
- {
- insert (XSTRING (tem)->data, XSTRING (tem)->size);
- }
- else
- {
- tem = wrong_type_argument (Qstringp, tem);
- goto retry;
- }
- }
- return Qnil;
- }
-
-
- syms_of_mocklisp ()
- {
- Qmocklisp = intern ("mocklisp");
- staticpro (&Qmocklisp);
-
- /*defsubr (&Sml_defun);*/
- defsubr (&Sml_if);
- /*defsubr (&Sml_while);*/
- defsubr (&Sml_arg);
- defsubr (&Sml_nargs);
- defsubr (&Sml_interactive);
- defsubr (&Sml_provide_prefix_argument);
- defsubr (&Sml_prefix_argument_loop);
- /*defsubr (&Sml_substr);*/
- defsubr (&Sinsert_string);
- }
-