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151 lines
4.7 KiB
Common Lisp
151 lines
4.7 KiB
Common Lisp
;;; -*- Mode: lisp -*-
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; load in the c functions
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(removeaddress '_signal)
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(removeaddress '_switch_to_proc)
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(removeaddress '_set_proc_str)
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(cfasl "/src/mdc/ledit/leditcfns.o" '_switch_to_proc 'emacs)
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(getaddress '_set_proc_str 'set_proc_str)
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(declare (special *ledit-infile* ; emacs->lisp tempfile
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*ledit-outfile* ; lisp->emacs tempfile
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*ledit-ppfile* ; pp->emacs tempfile
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*ledit-lisztfile* ; compiler input
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*ledit-objfile* ; compiler output
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*ledit-initialized*) ; flag
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)
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(setq *ledit-initialized* nil)
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;;; INIT-LEDIT
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(defun init-ledit ()
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(let ((user (getenv '|USER|))) ;USER must be uppercase
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(setq
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*ledit-outfile* (concat "/tmp/" user ".l2") ; lisp -> emacs
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*ledit-infile* (concat "/tmp/" user ".l1") ; emacs -> lisp
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*ledit-ppfile* (concat "/tmp/" user ".l3") ; pp output to emacs.
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*ledit-lisztfile* (concat "/tmp/" user ".l4")
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*ledit-objfile* (concat "/tmp/" user ".o")
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*ledit-initialized* t)))
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;;; LEDIT
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; if 1 arg, arg is taken as a tag name to pass to emacs.
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; if 2 args, second arg is a keyword. If 2nd arg is pp,
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; pp is applied to first arg, and result is sent to emacs
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; to put in a buffer called LEDIT (which is first erased.)
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(defun ledit fexpr (args)
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(apply #'ledit* args))
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;;; LEDIT*
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(defun ledit* n
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(if (not *ledit-initialized*) (init-ledit))
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(ledit-output (listify n))
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(syscall 10. *ledit-infile*) ; syscall 10 is "delete"
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(syscall 10. *ledit-lisztfile*)
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(emacs)
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(ledit-input)
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(syscall 10. *ledit-outfile*)
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(syscall 10. *ledit-ppfile*)
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t)
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;;; LEDIT-OUTPUT
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;;; Egad, what a mess! Doesn't work for XEMACS yet.
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;;; Here's an example from Mocklisp:
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;;; -> (defun bar (nothing) (bar nothing))
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;;; bar
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;;; -> (ledit bar)
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;;; should produce...
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;;; (progn) (progn tag (setq tag "bar") (&goto-tag))
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;;; and
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;;; -> (ledit bar pp)
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;;; should stuff this to emacs...
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;;; (progn) (switch-to-buffer "LEDIT") (erase-buffer)
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;;; (insert-file "/tmp/walter.l3") (lisp-mode)
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;;; and this...
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;;; (def bar
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;;; (lambda (x)
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;;; (bar nothing)))
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;;; into *LEDIT*
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(defun ledit-output (args)
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(if args
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(let ((ofile (outfile *ledit-outfile*)))
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(format ofile "(progn)") ; this is necessary.
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(cond ((null (cdr args)) ; no keyword -> arg is a tag.
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(format ofile "(progn tag (setq tag \"~A\"~
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(&goto-tag))"
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(car args)))
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((eq (cadr args) 'pp) ; pp-> pp first arg to emacs
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(apply 'pp `((|F| ,*ledit-ppfile*) ,(car args)))
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(format ofile "(switch-to-buffer \"LEDIT\")~
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(erase-buffer)")
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(format ofile "(insert-file \"~A\")"
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*ledit-ppfile*)
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(format ofile "(lisp-mode)"))
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(t (format t "~&~A -- unknown option~%" (cdr args))))
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(close ofile))))
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;;; LISZT*
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;;; Need this guy to do compile-input.
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;;; Liszt returns 0 if all was well.
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;;; Note that in ordinary use the user will have to get used to looking
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;;; at "%Warning: ... Compiler declared *foo* special" messages, since
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;;; you don't usually want to hunt around in your file, zap in the
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;;; declarations, then go back to what you were doing.
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;;; Fortunately this doesn't cause the compiler to bomb.
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;;; Some sleepless night I will think of a way to get around this.
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(defun liszt* (&rest args)
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(apply #'liszt args))
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;;; LEDIT-INPUT
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;;; Although there are two cases here, in practice
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;;; it is never the case that there is both input to be
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;;; interpreted and input to be compiled.
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(defun ledit-input ()
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(if (probef *ledit-lisztfile*)
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(cond ((getd #'liszt)
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(format t ";Compiling LEDIT:")
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(and (zerop (liszt* *ledit-lisztfile* '-o *ledit-objfile*))
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(load *ledit-objfile*)))
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(t (format t ";Can't compile LEDIT: No liszt.~%;Reading instead:")
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(let ((ifile (infile *ledit-lisztfile*)))
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(ledit-load ifile)
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(close ifile)))))
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(if (probef *ledit-infile*)
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(let ((ifile (infile *ledit-infile*)))
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(format t ";Reading from LEDIT:~%")
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(ledit-load ifile)
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(close ifile))))
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;;; LEDIT-LOAD
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;;; A generally useful form of load
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(defun ledit-load (ifile)
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(let ((eof-form (list 'eof-form)))
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(do ((form (read ifile eof-form) (read ifile eof-form)))
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((eq form eof-form))
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(format t "; ~A~%" (eval form)))))
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(setsyntax #/ 'macro 'ledit) ; make ^E = (ledit)<return>
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;; more robust version of the c function set_proc_str. Does argument checking.
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;; set_proc_str sets the string that is stuffed to the tty after franz pauses
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;; and the csh wakes up. It is usually "%emacs" or "%vemacs" or "%?emacs"
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(defun set-proc-str (arg)
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(if (stringp arg)
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(set_proc_str arg)
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(if (symbolp arg)
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(set_proc_str (get-pname arg))
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(error arg " is illegal argument to set-proc-str"))))
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