X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcompiler%2Finfo-functions.lisp;h=a5abe1152a7766993c248384d3067728ba4ed04e;hb=f1407e424f1063203af07d2e61ceef58515a4797;hp=52cf65f1f2dc2f8537b21dffcdbf5d59f6a590b5;hpb=422b88abf96f4842a3d0999cd3b80d96f5a153d6;p=sbcl.git

diff --git a/src/compiler/info-functions.lisp b/src/compiler/info-functions.lisp
index 52cf65f..a5abe11 100644
--- a/src/compiler/info-functions.lisp
+++ b/src/compiler/info-functions.lisp
@@ -26,9 +26,7 @@
 (defun check-fun-name (name)
   (typecase name
     (list
-     (unless (and (consp name) (consp (cdr name))
-		  (null (cddr name)) (eq (car name) 'setf)
-		  (symbolp (cadr name)))
+     (unless (legal-fun-name-p name)
        (compiler-error "illegal function name: ~S" name)))
     (symbol
      (when (eq (info :function :kind name) :special-form)
@@ -127,22 +125,25 @@
   #!+sb-doc
   "True of any Lisp object that has a constant value: types that eval to
   themselves, keywords, constants, and list whose car is QUOTE."
-  ;; FIXME: Should STRUCTURE-OBJECT and/or STANDARD-OBJECT be here?
-  ;; They eval to themselves..
-  ;;
   ;; FIXME: Someday it would be nice to make the code recognize foldable
   ;; functions and call itself recursively on their arguments, so that
   ;; more of the examples in the ANSI CL definition are recognized.
   ;; (e.g. (+ 3 2), (SQRT PI), and (LENGTH '(A B C)))
   (declare (ignore environment))
   (typecase object
-    (number t)
-    (character t)
-    (array t)
     ;; (Note that the following test on INFO catches KEYWORDs as well as
     ;; explicitly DEFCONSTANT symbols.)
     (symbol (eq (info :variable :kind object) :constant))
-    (list (eq (car object) 'quote))))
+    (list (and (eq (car object) 'quote)
+               (consp (cdr object))))
+    (t t)))
+
+(defun constant-form-value (form)
+  (typecase form
+    (symbol (info :variable :constant-value form))
+    ((cons (eql quote) cons)
+     (second form))
+    (t form)))
 
 (declaim (ftype (function (symbol &optional (or null sb!c::lexenv))) sb!xc:macro-function))
 (defun sb!xc:macro-function (symbol &optional env)
@@ -189,22 +190,24 @@
 
 (defun sb!xc:compiler-macro-function (name &optional env)
   #!+sb-doc
-  "If NAME names a compiler-macro, return the expansion function, else
-   return NIL. Note: if the name is shadowed in ENV by a local definition,
-   or declared NOTINLINE, NIL is returned. Can be set with SETF."
-  (let ((found (and env
-		    (cdr (assoc name (sb!c::lexenv-funs env)
-				:test #'equal)))))
-    (unless (eq (cond ((sb!c::defined-fun-p found)
-		       (sb!c::defined-fun-inlinep found))
-		      (found :notinline)
-		      (t
-		       (info :function :inlinep name)))
-		:notinline)
-      (values (info :function :compiler-macro-function name)))))
-(defun (setf sb!xc:compiler-macro-function) (function name)
+  "If NAME names a compiler-macro in ENV, return the expansion function, else
+   return NIL. Can be set with SETF when ENV is NIL."
+  (declare (ignore env))
+  (legal-fun-name-or-type-error name)
+  ;; Note: CMU CL used to return NIL here when a NOTINLINE declaration
+  ;; was in force. That's fairly logical, given the specified effect
+  ;; of NOTINLINE declarations on compiler-macro expansion. However,
+  ;; (1) it doesn't seem to be consistent with the ANSI spec for
+  ;; COMPILER-MACRO-FUNCTION, and (2) it would give surprising
+  ;; behavior for (SETF (COMPILER-MACRO-FUNCTION FOO) ...) in the
+  ;; presence of a (PROCLAIM '(NOTINLINE FOO)). So we don't do it.
+  (values (info :function :compiler-macro-function name)))
+(defun (setf sb!xc:compiler-macro-function) (function name &optional env)
   (declare (type (or symbol list) name)
 	   (type (or function null) function))
+  (when env
+    ;; ANSI says this operation is undefined.
+    (error "can't SETF COMPILER-MACRO-FUNCTION when ENV is non-NIL"))
   (when (eq (info :function :kind name) :special-form)
     (error "~S names a special form." name))
   (setf (info :function :compiler-macro-function name) function)