(make-source-info :file-info file-info
:stream stream)))
-;;; Return a form read from STREAM; or for EOF, use the trick
-;;; popularized by Kent Pitman of returning STREAM itself. If an error
-;;; happens, then convert it to standard abort-the-compilation error
-;;; condition (possibly recording some extra location information).
+;;; Return a form read from STREAM; or for EOF use the trick,
+;;; popularized by Kent Pitman, of returning STREAM itself. If an
+;;; error happens, then convert it to standard abort-the-compilation
+;;; error condition (possibly recording some extra location
+;;; information).
(defun read-for-compile-file (stream position)
(handler-case (read stream nil stream)
(reader-error (condition)
(setf (source-info-stream info) nil)
(values))
-;;; Read the source file.
-(defun process-source (info)
+;;; Read and compile the source file.
+(defun sub-sub-compile-file (info)
(let* ((file-info (source-info-file-info info))
(stream (get-source-stream info)))
(loop
(clrhash *source-paths*)
(find-source-paths form current-idx)
(process-top-level-form form
- `(original-source-start 0
- ,current-idx))))))))
+ `(original-source-start 0 ,current-idx)
+ nil)))))))
;;; Return the INDEX'th source form read from INFO and the position
;;; where it was read.
(cond ((eq *block-compile* t) (push tll *top-level-lambdas*))
(t (compile-top-level (list tll) nil)))))
-;;; Process a PROGN-like portion of a top-level form. Forms is a list of
-;;; the forms, and Path is source path of the form they came out of.
-(defun process-top-level-progn (forms path)
- (declare (list forms) (list path))
- (dolist (form forms)
- (process-top-level-form form path)))
-
-;;; Macroexpand form in the current environment with an error handler.
+;;; Macroexpand FORM in the current environment with an error handler.
;;; We only expand one level, so that we retain all the intervening
;;; forms in the source path.
(defun preprocessor-macroexpand (form)
(error (condition)
(compiler-error "(during macroexpansion)~%~A" condition))))
-;;; Process a top-level use of LOCALLY. We parse declarations and then
-;;; recursively process the body.
-(defun process-top-level-locally (form path)
+;;; Process a PROGN-like portion of a top-level form. FORMS is a list of
+;;; the forms, and PATH is the source path of the FORM they came out of.
+;;; COMPILE-TIME-TOO is as in ANSI "3.2.3.1 Processing of Top Level Forms".
+(defun process-top-level-progn (forms path compile-time-too)
+ (declare (list forms) (list path))
+ (dolist (form forms)
+ (process-top-level-form form path compile-time-too)))
+
+;;; Process a top-level use of LOCALLY, or anything else (e.g.
+;;; MACROLET) at top-level which has declarations and ordinary forms.
+;;; We parse declarations and then recursively process the body.
+(defun process-top-level-locally (body path compile-time-too)
(declare (list path))
- (multiple-value-bind (forms decls) (sb!sys:parse-body (cdr form) nil)
+ (multiple-value-bind (forms decls) (sb!sys:parse-body body nil)
(let* ((*lexenv*
(process-decls decls nil nil (make-continuation)))
;; Binding *POLICY* is pretty much of a hack, since it
;; value of *POLICY* as the policy. The need for this hack
;; is due to the quirk that there is no way to represent in
;; a POLICY that an optimize quality came from the default.
+ ;;
;; FIXME: Ideally, something should be done so that DECLAIM
;; inside LOCALLY works OK. Failing that, at least we could
;; issue a warning instead of silently screwing up.
(*policy* (lexenv-policy *lexenv*)))
- (process-top-level-progn forms path))))
+ (process-top-level-progn forms path compile-time-too))))
;;; Force any pending top-level forms to be compiled and dumped so
;;; that they will be evaluated in the correct package environment.
(when eval
(eval form))))
+;;; Parse an EVAL-WHEN situations list, returning three flags,
+;;; (VALUES COMPILE-TOPLEVEL LOAD-TOPLEVEL EXECUTE), indicating
+;;; the types of situations present in the list.
+(defun parse-eval-when-situations (situations)
+ (when (or (not (listp situations))
+ (set-difference situations
+ '(:compile-toplevel
+ compile
+ :load-toplevel
+ load
+ :execute
+ eval)))
+ (compiler-error "bad EVAL-WHEN situation list: ~S" situations))
+ (let ((deprecated-names (intersection situations '(compile load eval))))
+ (when deprecated-names
+ (style-warn "using deprecated EVAL-WHEN situation names~{ ~S~}"
+ deprecated-names)))
+ (values (intersection '(:compile-toplevel compile)
+ situations)
+ (intersection '(:load-toplevel load) situations)
+ (intersection '(:execute eval) situations)))
+
;;; Process a top-level FORM with the specified source PATH.
;;; * If this is a magic top-level form, then do stuff.
;;; * If this is a macro, then expand it.
;;; * Otherwise, just compile it.
-(defun process-top-level-form (form path)
+;;;
+;;; COMPILE-TIME-TOO is as defined in ANSI
+;;; "3.2.3.1 Processing of Top Level Forms".
+(defun process-top-level-form (form path compile-time-too)
(declare (list path))
(catch 'process-top-level-form-error-abort
(let* ((path (or (gethash form *source-paths*) (cons form path)))
(*compiler-error-bailout*
- #'(lambda ()
- (convert-and-maybe-compile
- `(error "execution of a form compiled with errors:~% ~S"
- ',form)
- path)
- (throw 'process-top-level-form-error-abort nil))))
+ (lambda ()
+ (convert-and-maybe-compile
+ `(error "execution of a form compiled with errors:~% ~S"
+ ',form)
+ path)
+ (throw 'process-top-level-form-error-abort nil))))
+
(if (atom form)
+ ;; (There are no EVAL-WHEN issues in the ATOM case until
+ ;; SBCL gets smart enough to handle global
+ ;; DEFINE-SYMBOL-MACRO.)
(convert-and-maybe-compile form path)
- (case (car form)
- ;; FIXME: It's not clear to me why we would want this
- ;; special case; it might have been needed for some
- ;; variation of the old GENESIS system, but it certainly
- ;; doesn't seem to be needed for ours. Sometime after the
- ;; system is running I'd like to remove it tentatively and
- ;; see whether anything breaks, and if nothing does break,
- ;; remove it permanently. (And if we *do* want special
- ;; treatment of all these, we probably want to treat WARN
- ;; the same way..)
- ((error cerror break signal)
- (process-cold-load-form form path nil))
- ;; FIXME: ANSI seems to encourage things like DEFSTRUCT to
- ;; be done with EVAL-WHEN, without this kind of one-off
- ;; compiler magic.
- (sb!kernel:%compiler-defstruct
- (convert-and-maybe-compile form path)
- (compile-top-level-lambdas () t))
- ((eval-when)
- (unless (>= (length form) 2)
- (compiler-error "EVAL-WHEN form is too short: ~S" form))
- (do-eval-when-stuff
- (cadr form) (cddr form)
- #'(lambda (forms)
- (process-top-level-progn forms path))))
- ((macrolet)
- (unless (>= (length form) 2)
- (compiler-error "MACROLET form is too short: ~S" form))
- (do-macrolet-stuff
- (cadr form)
- #'(lambda ()
- (process-top-level-progn (cddr form) path))))
- (locally (process-top-level-locally form path))
- (progn (process-top-level-progn (cdr form) path))
- (t
- (let* ((uform (uncross form))
- (exp (preprocessor-macroexpand uform)))
- (if (eq exp uform)
- (convert-and-maybe-compile uform path)
- (process-top-level-form exp path))))))))
+ (flet ((need-at-least-one-arg (form)
+ (unless (cdr form)
+ (compiler-error "~S form is too short: ~S"
+ (car form)
+ form))))
+ (case (car form)
+ ;; FIXME: It's not clear to me why we would want this
+ ;; special case; it might have been needed for some
+ ;; variation of the old GENESIS system, but it certainly
+ ;; doesn't seem to be needed for ours. Sometime after the
+ ;; system is running I'd like to remove it tentatively and
+ ;; see whether anything breaks, and if nothing does break,
+ ;; remove it permanently. (And if we *do* want special
+ ;; treatment of all these, we probably want to treat WARN
+ ;; the same way..)
+ ((error cerror break signal)
+ (process-cold-load-form form path nil))
+ ((eval-when macrolet symbol-macrolet);things w/ 1 arg before body
+ (need-at-least-one-arg form)
+ (destructuring-bind (special-operator magic &rest body) form
+ (ecase special-operator
+ ((eval-when)
+ ;; CT, LT, and E here are as in Figure 3-7 of ANSI
+ ;; "3.2.3.1 Processing of Top Level Forms".
+ (multiple-value-bind (ct lt e)
+ (parse-eval-when-situations magic)
+ (let ((new-compile-time-too (or ct
+ (and compile-time-too
+ e))))
+ (cond (lt (process-top-level-progn
+ body path new-compile-time-too))
+ (new-compile-time-too (eval
+ `(progn ,@body)))))))
+ ((macrolet)
+ (funcall-in-macrolet-lexenv
+ magic
+ (lambda ()
+ (process-top-level-locally body
+ path
+ compile-time-too))))
+ ((symbol-macrolet)
+ (funcall-in-symbol-macrolet-lexenv
+ magic
+ (lambda ()
+ (process-top-level-locally body
+ path
+ compile-time-too)))))))
+ ((locally)
+ (process-top-level-locally (rest form) path compile-time-too))
+ ((progn)
+ (process-top-level-progn (rest form) path compile-time-too))
+ #+sb-xc-host
+ ;; Consider: What should we do when we hit e.g.
+ ;; (EVAL-WHEN (:COMPILE-TOPLEVEL)
+ ;; (DEFUN FOO (X) (+ 7 X)))?
+ ;; DEFUN has a macro definition in the cross-compiler,
+ ;; and a different macro definition in the target
+ ;; compiler. The only sensible thing is to use the
+ ;; target compiler's macro definition, since the
+ ;; cross-compiler's macro is in general into target
+ ;; functions which can't meaningfully be executed at
+ ;; cross-compilation time. So make sure we do the EVAL
+ ;; here, before we macroexpand.
+ ;;
+ ;; (Isn't it fun to cross-compile Common Lisp?:-)
+ (t
+ (when compile-time-too
+ (eval form)) ; letting xc host EVAL do its own macroexpansion
+ (let* ((uncrossed (uncross form))
+ ;; letting our cross-compiler do its macroexpansion too
+ (expanded (preprocessor-macroexpand uncrossed)))
+ (if (eq expanded uncrossed)
+ (convert-and-maybe-compile expanded path)
+ ;; Note that we also have to demote
+ ;; COMPILE-TIME-TOO to NIL, no matter what it was
+ ;; before, since otherwise we'd tend to EVAL
+ ;; subforms more than once.
+ (process-top-level-form expanded path nil))))
+ ;; When we're not cross-compiling, we only need to
+ ;; macroexpand once, so we can follow the 1-thru-6
+ ;; sequence of steps in ANSI's "3.2.3.1 Processing of
+ ;; Top Level Forms".
+ #-sb-xc-host
+ (t
+ (let ((expanded (preprocessor-macroexpand form)))
+ (cond ((eq expanded form)
+ (when compile-time-too
+ (eval form))
+ (convert-and-maybe-compile form path))
+ (t
+ (process-top-level-form expanded
+ path
+ compile-time-too))))))))))
(values))
\f
;;;;
;;;; (See EMIT-MAKE-LOAD-FORM.)
-;;; Returns T iff we are currently producing a fasl file and hence
+;;; Returns T if we are currently producing a fasl file and hence
;;; constants need to be dumped carefully.
(defun producing-fasl-file ()
(unless *converting-for-interpreter*
(declare (list lambdas))
(let ((len (length lambdas)))
(flet ((loser (start)
- (or (position-if #'(lambda (x)
- (not (eq (component-kind
- (block-component
- (node-block
- (lambda-bind x))))
- :top-level)))
+ (or (position-if (lambda (x)
+ (not (eq (component-kind
+ (block-component
+ (node-block
+ (lambda-bind x))))
+ :top-level)))
lambdas
:start start)
len)))
(sb!xc:with-compilation-unit ()
(clear-stuff)
- (process-source info)
+ (sub-sub-compile-file info)
(finish-block-compilation)
(compile-top-level-lambdas () t)
projects / sbcl.git / blobdiff