File r34/src/prolog.red artifact aaf87a7ad7 part of check-in 3c4d7b69af

% module prolog;   % PSL dependent code for REDUCE.

% Author: Anthony C. Hearn.

% This file defines functions, variables and declarations needed to
% make REDUCE and the underlying PSL system compatible, and which need
% to be input before the system independent REDUCE source is loaded.

% The following line is done this way for bootstrapping.

if getd 'create!-package then create!-package('(prolog),'(rlisp));

% Code for resolving aliasing name conflicts.

fluid '(!*quotenewnam);

symbolic procedure define!-alias!-list u;
   begin scalar x;
   a: if null u then return nil;
      x := intern compress append(explode '!~,explode car u);
      put(car u,'newnam,x);
      put(x,'oldnam,car u);
      put(car u,'quotenewnam,x);
      u := cdr u;
      go to a
   end;


% PSL doesn't need PRINTPROMPT.

remflag('(printprompt),'lose);

symbolic procedure printprompt u; nil;

flag('(printprompt),'lose);

flag('(gcdn),'lose);     % Defined in bignum package.

% flag('(aconc atsoc copy delasc eqcar geq lastpair leq mkquote neq
%        prin2t reversip rplacw putc yesp),'lose);

flag('(block foreach lprim repeat while),'user);  % permits redefinition

% The following assignment is done this way for bootstrapping.

flag('(set),'eval);

set('!*quotenewnam,nil);

define!-alias!-list
      '(arrayp do for on off let clear flatten imports
        indx mkid mkvec vector editf spaces2 prettyprint);

set('!*quotenewnam,t);

remflag('(set),'eval);


% Resolution of non-local variable definitions.

% The following PSL variables differ from the Standard LISP Report

remprop('!*comp,'vartype);

remprop('!*raise,'vartype);

% The following are not in the Standard LISP Report, but differ from
% usual REDUCE usage.

remprop('cursym!*,'vartype);

% endmodule;


end;