Initial revision

1 files changed, 242 insertions, 0 deletions

diff --git a/src/mocklisp.c b/src/mocklisp.c
new file mode 100644
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+++ b/src/mocklisp.c
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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, "Mocklisp version of `if'.")
+  (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));
+  return unbind_to (count, val);
+}
+
+DEFUN ("ml-nargs", Fml_nargs, Sml_nargs, 0, 0, 0,
+  "Number of arguments to currently executing 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 number N to currently executing 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 currently executing 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;
+}
+
+#if 0 /* 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)
+        insert1 (tem);
+      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);
+}