(defvar *eval-source-context* nil)
+(defvar *eval-tlf-index* nil)
+(defvar *eval-source-info* nil)
+
+;;;; Turns EXPR into a lambda-form we can pass to COMPILE. Returns
+;;;; a secondary value of T if we must call the resulting function
+;;;; to evaluate EXPR -- if EXPR is already a lambda form, there's
+;;;; no need.
+(defun make-eval-lambda (expr)
+ (if (typep expr `(cons (member lambda named-lambda lambda-with-lexenv)))
+ (values expr nil)
+ (values `(lambda ()
+ ;; why PROGN? So that attempts to eval free declarations
+ ;; signal errors rather than return NIL. -- CSR, 2007-05-01
+ (progn ,expr))
+ t)))
+
;;; general case of EVAL (except in that it can't handle toplevel
;;; EVAL-WHEN magic properly): Delegate to #'COMPILE.
(defun %simple-eval (expr lexenv)
- ;; FIXME: It might be nice to quieten the toplevel by muffling
- ;; warnings generated by this compilation (since we're about to
- ;; execute the results irrespective of the warnings). We might want
- ;; to be careful about not muffling warnings arising from inner
- ;; evaluations/compilations, though [e.g. the ignored variable in
- ;; (DEFUN FOO (X) 1)]. -- CSR, 2003-05-13
- ;;
- ;; As of 1.0.21.6 we muffle compiler notes lexically here, which seems
- ;; always safe. --NS
- (let* (;; why PROGN? So that attempts to eval free declarations
- ;; signal errors rather than return NIL. -- CSR, 2007-05-01
- (lambda `(named-lambda (eval ,(sb!c::source-form-context *eval-source-context*)) ()
- (declare (muffle-conditions compiler-note))
- (progn ,expr)))
- (fun (sb!c:compile-in-lexenv nil lambda lexenv)))
- (funcall fun)))
+ (multiple-value-bind (lambda call) (make-eval-lambda expr)
+ (let ((fun
+ ;; This tells the compiler where the lambda comes from, in case it
+ ;; wants to report any problems.
+ (let ((sb!c::*source-form-context-alist*
+ (acons lambda *eval-source-context*
+ sb!c::*source-form-context-alist*)))
+ (handler-bind (;; Compiler notes just clutter up the REPL:
+ ;; anyone caring about performance should not
+ ;; be using EVAL.
+ (compiler-note #'muffle-warning))
+ (sb!c:compile-in-lexenv
+ nil lambda lexenv *eval-source-info* *eval-tlf-index* (not call))))))
+ (declare (function fun))
+ (if call
+ (funcall fun)
+ fun))))
;;; Handle PROGN and implicit PROGN.
(defun simple-eval-progn-body (progn-body lexenv)
;; with DEFINE-SYMBOL-MACRO, keeping the code walkers
;; happy.
(:alien
- (%simple-eval original-exp lexenv))))
+ (sb!alien-internals:alien-value exp))))
(list
(let ((name (first exp))
(n-args (1- (length exp))))
else)
lexenv)))
((let let*)
- (destructuring-bind (definitions &rest body) (rest exp)
- (if (null definitions)
- (simple-eval-locally `(locally ,@body) lexenv)
- (%simple-eval exp lexenv))))
+ (%simple-eval exp lexenv))
(t
(if (and (symbolp name)
(eq (info :function :kind name) :function))
#!+sb-doc
"Evaluate the argument in a null lexical environment, returning the
result or results."
- (let ((*eval-source-context* original-exp))
+ (let ((*eval-source-context* original-exp)
+ (*eval-tlf-index* nil)
+ (*eval-source-info* nil))
(eval-in-lexenv original-exp (make-null-lexenv))))
+(defun eval-tlf (original-exp tlf-index &optional (lexenv (make-null-lexenv)))
+ (let ((*eval-source-context* original-exp)
+ (*eval-tlf-index* tlf-index)
+ (*eval-source-info* sb!c::*source-info*))
+ (eval-in-lexenv original-exp lexenv)))
\f
;;; miscellaneous full function definitions of things which are
;;; ordinarily handled magically by the compiler