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;;;; -*- Mode: lisp; indent-tabs-mode: nil -*-
;;;
;;; swank-ecl.lisp --- SLIME backend for ECL.
;;; Administrivia
(in-package :swank-backend)
(import-from :ext *gray-stream-symbols* :swank-backend)
(swank-backend::import-swank-mop-symbols :clos
'(:eql-specializer
:eql-specializer-object
:generic-function-declarations
:specializer-direct-methods
:compute-applicable-methods-using-classes))
;;;; TCP Server
(require 'sockets)
(defun resolve-hostname (name)
(car (sb-bsd-sockets:host-ent-addresses
(sb-bsd-sockets:get-host-by-name name))))
(defimplementation create-socket (host port)
(let ((socket (make-instance 'sb-bsd-sockets:inet-socket
:type :stream
:protocol :tcp)))
(setf (sb-bsd-sockets:sockopt-reuse-address socket) t)
(sb-bsd-sockets:socket-bind socket (resolve-hostname host) port)
(sb-bsd-sockets:socket-listen socket 5)
socket))
(defimplementation local-port (socket)
(nth-value 1 (sb-bsd-sockets:socket-name socket)))
(defimplementation close-socket (socket)
(sb-bsd-sockets:socket-close socket))
(defimplementation accept-connection (socket
&key external-format
buffering timeout)
(declare (ignore buffering timeout))
(assert (eq external-format :iso-latin-1-unix))
(make-socket-io-stream (accept socket) external-format))
(defun make-socket-io-stream (socket external-format)
(sb-bsd-sockets:socket-make-stream socket
:output t
:input t
:element-type 'base-char))
(defun accept (socket)
"Like socket-accept, but retry on EAGAIN."
(loop (handler-case
(return (sb-bsd-sockets:socket-accept socket))
(sb-bsd-sockets:interrupted-error ()))))
(defimplementation preferred-communication-style ()
(values nil))
;;;; Unix signals
(defimplementation getpid ()
(si:getpid))
#+nil
(defimplementation set-default-directory (directory)
(ext::chdir (namestring directory))
;; Setting *default-pathname-defaults* to an absolute directory
;; makes the behavior of MERGE-PATHNAMES a bit more intuitive.
(setf *default-pathname-defaults* (ext::getcwd))
(default-directory))
#+nil
(defimplementation default-directory ()
(namestring (ext:getcwd)))
(defimplementation quit-lisp ()
(ext:quit))
;;;; Compilation
(defvar *buffer-name* nil)
(defvar *buffer-start-position*)
(defvar *buffer-string*)
(defvar *compile-filename*)
(defun signal-compiler-condition (&rest args)
(signal (apply #'make-condition 'compiler-condition args)))
(defun handle-compiler-warning (condition)
(signal-compiler-condition
:original-condition condition
:message (format nil "~A" condition)
:severity :warning
:location
(if *buffer-name*
(make-location (list :buffer *buffer-name*)
(list :position *buffer-start-position*))
;; ;; compiler::*current-form*
;; (if compiler::*current-function*
;; (make-location (list :file *compile-filename*)
;; (list :function-name
;; (symbol-name
;; (slot-value compiler::*current-function*
;; 'compiler::name))))
(list :error "No location found.")
;; )
)))
(defimplementation call-with-compilation-hooks (function)
(handler-bind ((warning #'handle-compiler-warning))
(funcall function)))
(defimplementation swank-compile-file (*compile-filename* load-p
&optional external-format)
(declare (ignore external-format))
(with-compilation-hooks ()
(let ((*buffer-name* nil))
(multiple-value-bind (fn warn fail)
(compile-file *compile-filename*)
(when load-p (unless fail (load fn)))))))
(defimplementation swank-compile-string (string &key buffer position directory)
(declare (ignore directory))
(with-compilation-hooks ()
(let ((*buffer-name* buffer)
(*buffer-start-position* position)
(*buffer-string* string))
(with-input-from-string (s string)
(compile-from-stream s :load t)))))
(defun compile-from-stream (stream &rest args)
(let ((file (si::mkstemp "TMP:ECLXXXXXX")))
(with-open-file (s file :direction :output :if-exists :overwrite)
(do ((line (read-line stream nil) (read-line stream nil)))
(line)
(write-line line s)))
(unwind-protect
(apply #'compile-file file args)
(delete-file file))))
;;;; Documentation
(defimplementation arglist (name)
(or (functionp name) (setf name (symbol-function name)))
(if (functionp name)
(typecase name
(generic-function
(clos::generic-function-lambda-list name))
(function
(let ((fle (function-lambda-expression name)))
(case (car fle)
(si:lambda-block (caddr fle))
(t :not-available)))))
:not-available))
(defimplementation function-name (f)
(si:compiled-function-name f))
(defimplementation macroexpand-all (form)
;;; FIXME! This is not the same as a recursive macroexpansion!
(macroexpand form))
(defimplementation describe-symbol-for-emacs (symbol)
(let ((result '()))
(dolist (type '(:VARIABLE :FUNCTION :CLASS))
(let ((doc (describe-definition symbol type)))
(when doc
(setf result (list* type doc result)))))
result))
(defimplementation describe-definition (name type)
(case type
(:variable (documentation name 'variable))
(:function (documentation name 'function))
(:class (documentation name 'class))
(t nil)))
;;; Debugging
(import
'(si::*ihs-top*
si::*ihs-current*
si::*ihs-base*
si::*frs-base*
si::*frs-top*
si::*tpl-commands*
si::*tpl-level*
si::frs-top
si::ihs-top
si::sch-frs-base
si::set-break-env
si::set-current-ihs
si::tpl-commands))
(defimplementation call-with-debugging-environment (debugger-loop-fn)
(declare (type function debugger-loop-fn))
(let* ((*tpl-commands* si::tpl-commands)
(*ihs-top* (ihs-top 'call-with-debugging-environment))
(*ihs-current* *ihs-top*)
(*frs-base* (or (sch-frs-base *frs-top* *ihs-base*) (1+ (frs-top))))
(*frs-top* (frs-top))
(*read-suppress* nil)
(*tpl-level* (1+ *tpl-level*)))
(set-break-env)
(set-current-ihs)
(funcall debugger-loop-fn)))
;; (defimplementation call-with-debugger-hook (hook fun)
;; (let ((*debugger-hook* hook))
;; (funcall fun)))
(defun nth-frame (n)
(cond ((>= n *ihs-top* ) nil)
(t (- *ihs-top* n))))
(defimplementation compute-backtrace (start end)
(loop for i from start below end
for f = (nth-frame i)
while f
collect f))
(defimplementation print-frame (frame stream)
(format stream "~A" (si::ihs-fname frame)))
;;;; Inspector
(defclass ecl-inspector (inspector)
())
(defimplementation make-default-inspector ()
(make-instance 'ecl-inspector))
;;;; Definitions
(defimplementation find-definitions (name) nil)
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