1.0.29.22: smattering of DOCUMENTATION cleanups

[sbcl.git] / src / pcl / compiler-support.lisp

diff --git a/src/pcl/compiler-support.lisp b/src/pcl/compiler-support.lisp
index b35093c..f7da509 100644 (file)
--- a/src/pcl/compiler-support.lisp
+++ b/src/pcl/compiler-support.lisp
@@ -38,19 +38,91 @@
   (movable foldable flushable explicit-check))
 
 (deftransform sb-pcl::pcl-instance-p ((object))
-  (let* ((otype (continuation-type object))
-        (std-obj (specifier-type 'sb-pcl::std-object)))
+  (let* ((otype (lvar-type object))
+         (standard-object (specifier-type 'standard-object)))
     (cond
       ;; Flush tests whose result is known at compile time.
-      ((csubtypep otype std-obj) t)
-      ((not (types-equal-or-intersect otype std-obj)) nil)
+      ((csubtypep otype standard-object) t)
+      ((not (types-equal-or-intersect otype standard-object)) nil)
       (t
        `(typep (layout-of object) 'sb-pcl::wrapper)))))
 
+(defun sb-pcl::safe-code-p (&optional env)
+  (let* ((lexenv (or env (make-null-lexenv)))
+         (policy (lexenv-policy lexenv)))
+    (eql (cdr (assoc 'safety policy)) 3)))
+
 (define-source-context defmethod (name &rest stuff)
   (let ((arg-pos (position-if #'listp stuff)))
     (if arg-pos
-       `(defmethod ,name ,@(subseq stuff 0 arg-pos)
-          ,(nth-value 2 (sb-pcl::parse-specialized-lambda-list
-                         (elt stuff arg-pos))))
-       `(defmethod ,name "<illegal syntax>"))))
+        `(defmethod ,name ,@(subseq stuff 0 arg-pos)
+           ,(handler-case
+                (nth-value 2 (sb-pcl::parse-specialized-lambda-list
+                              (elt stuff arg-pos)))
+              (error () "<illegal syntax>")))
+        `(defmethod ,name "<illegal syntax>"))))
+
+(defvar sb-pcl::*internal-pcl-generalized-fun-name-symbols* nil)
+
+(defmacro define-internal-pcl-function-name-syntax (name &body body)
+  `(progn
+     (define-function-name-syntax ,name ,@body)
+     (pushnew ',name sb-pcl::*internal-pcl-generalized-fun-name-symbols*)))
+
+(define-internal-pcl-function-name-syntax sb-pcl::slot-accessor (list)
+  (when (= (length list) 4)
+    (destructuring-bind (class slot rwb) (cdr list)
+      (when (and (member rwb '(sb-pcl::reader sb-pcl::writer sb-pcl::boundp))
+                 (symbolp slot)
+                 (symbolp class))
+        (values t slot)))))
+
+(define-internal-pcl-function-name-syntax sb-pcl::fast-method (list)
+  (valid-function-name-p (cadr list)))
+
+(define-internal-pcl-function-name-syntax sb-pcl::slow-method (list)
+  (valid-function-name-p (cadr list)))
+
+(define-internal-pcl-function-name-syntax sb-pcl::ctor (list)
+  (valid-function-name-p (cadr list)))
+
+;;;; SLOT-VALUE optimizations
+
+(defknown slot-value (t symbol) t (any))
+(defknown sb-pcl::set-slot-value (t symbol t) t (any))
+
+(defun pcl-boot-state-complete-p ()
+  (eq 'sb-pcl::complete sb-pcl::*boot-state*))
+
+;;; These essentially duplicate what the compiler-macros in slots.lisp
+;;; do, but catch more cases. We retain the compiler-macros since they
+;;; can be used during the build, and because they catch common cases
+;;; slightly more cheaply then the transforms. (Transforms add new
+;;; lambdas, which requires more work by the compiler.)
+
+(deftransform slot-value ((object slot-name))
+  "optimize"
+  (let (c-slot-name)
+    (if (and (pcl-boot-state-complete-p)
+             (constant-lvar-p slot-name)
+             (setf c-slot-name (lvar-value slot-name))
+             (sb-pcl::interned-symbol-p c-slot-name))
+        `(sb-pcl::accessor-slot-value object ',c-slot-name)
+        (give-up-ir1-transform "Slot name is not constant."))))
+
+(deftransform sb-pcl::set-slot-value ((object slot-name new-value)
+                                      (t symbol t) t
+                                      ;; Safe code wants to check the
+                                      ;; type, and the global accessor
+                                      ;; won't do that. Also see the
+                                      ;; comment in the
+                                      ;; compiler-macro.
+                                      :policy (< safety 3))
+  "optimize"
+  (let (c-slot-name)
+    (if (and (pcl-boot-state-complete-p)
+             (constant-lvar-p slot-name)
+             (setf c-slot-name (lvar-value slot-name))
+             (sb-pcl::interned-symbol-p c-slot-name))
+        `(sb-pcl::accessor-set-slot-value object ',c-slot-name new-value)
+        (give-up-ir1-transform "Slot name is not constant."))))