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;;; geiser-eval.el -- sending scheme code for evaluation
;; Copyright (C) 2009, 2010, 2011, 2012 Jose Antonio Ortega Ruiz
;; This program is free software; you can redistribute it and/or
;; modify it under the terms of the Modified BSD License. You should
;; have received a copy of the license along with this program. If
;; not, see <http://www.xfree86.org/3.3.6/COPYRIGHT2.html#5>.
;; Start date: Sat Feb 07, 2009 22:35
;; Functions, building on top of geiser-connection, to evaluate scheme
;; code.
(require 'geiser-impl)
(require 'geiser-connection)
(require 'geiser-syntax)
(require 'geiser-log)
(require 'geiser-base)
;;; Plug-able functions:
(make-variable-buffer-local
(defvar geiser-eval--get-module-function nil))
(set-default 'geiser-eval--get-module-function nil)
(defvar geiser-eval--get-impl-module nil)
(geiser-impl--register-local-method
'geiser-eval--get-impl-module 'find-module '(lambda (&rest) nil)
"Function used to obtain the module for current buffer. It takes
an optional argument, for cases where we want to force its
value.")
(defun geiser-eval--get-module (&optional module)
(if geiser-eval--get-module-function
(funcall geiser-eval--get-module-function module)
(funcall geiser-eval--get-impl-module module)))
(defvar geiser-eval--geiser-procedure-function)
(geiser-impl--register-local-method
'geiser-eval--geiser-procedure-function 'marshall-procedure 'identity
"Function to translate a bare procedure symbol to one executable
in the Scheme context. Return NULL for unsupported ones; at the
very least, EVAL, COMPILE, LOAD-FILE and COMPILE-FILE should be
supported.")
(defvar geiser-eval--unsupported nil)
(geiser-impl--register-local-variable
'geiser-eval--unsupported 'unsupported-procedures nil
"A list, or function returning a list, of the Geiser procedures
not implemented by this Scheme implementation. Possible values
include macroexpand, completions, module-completions, find-file,
symbol-location, module-location, symbol-documentation,
module-exports, autodoc, callers, callees and generic-methods.")
(defun geiser-eval--supported-p (feat)
(or (not geiser-eval--unsupported)
(not (memq feat geiser-eval--unsupported))))
(defsubst geiser-eval--form (&rest args)
(when (not (geiser-eval--supported-p (car args)))
(error "Sorry, the %s scheme implementation does not support Geiser's %s"
geiser-impl--implementation (car args)))
(apply geiser-eval--geiser-procedure-function args))
;;; Code formatting:
(defsubst geiser-eval--eval (code)
(geiser-eval--form 'eval
(geiser-eval--module (nth 1 code))
(geiser-eval--scheme-str (nth 0 code))))
(defsubst geiser-eval--comp (code)
(geiser-eval--form 'compile
(geiser-eval--module (nth 1 code))
(geiser-eval--scheme-str (nth 0 code))))
(defsubst geiser-eval--load-file (file)
(geiser-eval--form 'load-file
(geiser-eval--scheme-str file)))
(defsubst geiser-eval--comp-file (file)
(geiser-eval--form 'compile-file
(geiser-eval--scheme-str file)))
(defsubst geiser-eval--module (code)
(geiser-eval--scheme-str
(cond ((or (null code) (eq code :t) (eq code :buffer))
(geiser-eval--get-module))
((or (eq code :repl) (eq code :f)) :f)
(t (geiser-eval--get-module code)))))
(defsubst geiser-eval--ge (proc args)
(apply 'geiser-eval--form (cons proc
(mapcar 'geiser-eval--scheme-str args))))
(defun geiser-eval--scheme-str (code)
(cond ((null code) "'()")
((eq code :f) "#f")
((eq code :t) "#t")
((listp code)
(cond ((eq (car code) :eval) (geiser-eval--eval (cdr code)))
((eq (car code) :comp) (geiser-eval--comp (cdr code)))
((eq (car code) :load-file)
(geiser-eval--load-file (cadr code)))
((eq (car code) :comp-file)
(geiser-eval--comp-file (cadr code)))
((eq (car code) :module) (geiser-eval--module (cadr code)))
((eq (car code) :ge) (geiser-eval--ge (cadr code)
(cddr code)))
((eq (car code) :scm) (cadr code))
(t (concat "("
(mapconcat 'geiser-eval--scheme-str code " ")
")"))))
((symbolp code) (substring-no-properties (format "%s" code)))
(t (substring-no-properties (format "%S" code)))))
;;; Code sending:
(defvar geiser-eval--default-connection-function nil)
(defsubst geiser-eval--connection ()
(and geiser-eval--default-connection-function
(funcall geiser-eval--default-connection-function)))
(defsubst geiser-eval--log (s)
(geiser-log--info "RETORT: %S" s)
s)
(defsubst geiser-eval--code-str (code)
(if (stringp code) code (geiser-eval--scheme-str code)))
(defsubst geiser-eval--send (code cont &optional buffer)
(geiser-con--send-string (geiser-eval--connection)
(geiser-eval--code-str code)
cont
buffer))
(defvar geiser-eval--sync-retort nil)
(defun geiser-eval--set-sync-retort (s)
(setq geiser-eval--sync-retort (geiser-eval--log s)))
(defun geiser-eval--send/wait (code &optional timeout buffer)
(setq geiser-eval--sync-retort nil)
(geiser-con--send-string/wait (geiser-eval--connection)
(geiser-eval--code-str code)
'geiser-eval--set-sync-retort
timeout
buffer)
geiser-eval--sync-retort)
(defsubst geiser-eval--send/result (code &optional timeout buffer)
(geiser-eval--retort-result (geiser-eval--send/wait code timeout buffer)))
;;; Retort parsing:
(defsubst geiser-eval--retort-p (ret)
(and (listp ret) (or (assoc 'error ret) (assoc 'result ret))))
(defsubst geiser-eval--retort-result (ret)
(let ((values (cdr (assoc 'result ret))))
(car (geiser-syntax--read-from-string (car values)))))
(defun geiser-eval--retort-result-str (ret)
(let ((values (cdr (assoc 'result ret))))
(if values
(concat "=> " (mapconcat 'identity values "\n=> "))
"(No value)")))
(defsubst geiser-eval--retort-output (ret) (cdr (assoc 'output ret)))
(defsubst geiser-eval--retort-error (ret) (cdr (assoc 'error ret)))
(defsubst geiser-eval--error-key (err) (cdr (assoc 'key err)))
(defsubst geiser-eval--error-subr (err) (cdr (assoc 'subr err)))
(defsubst geiser-eval--error-msg (err) (cdr (assoc 'msg err)))
(defsubst geiser-eval--error-rest (err) (cdr (assoc 'rest err)))
(defun geiser-eval--error-str (err)
(let* ((key (geiser-eval--error-key err))
(key-str (if key (format ": %s" key) ":"))
(subr (geiser-eval--error-subr err))
(subr-str (if subr (format " (%s):" subr) ""))
(msg (geiser-eval--error-msg err))
(msg-str (if msg (format "\n %s" msg) ""))
(rest (geiser-eval--error-rest err))
(rest-str (if rest (format "\n %s" rest) "")))
(format "Error%s%s%s%s" subr-str key-str msg-str rest-str)))
(provide 'geiser-eval)
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