0.pre7.90:

[sbcl.git] / src / code / macros.lisp

diff --git a/src/code/macros.lisp b/src/code/macros.lisp
index d94900c..fe11e84 100644 (file)
--- a/src/code/macros.lisp
+++ b/src/code/macros.lisp
@@ -80,11 +80,10 @@
 
 (defmacro-mundanely defconstant (name value &optional documentation)
   #!+sb-doc
-  "For defining global constants. DEFCONSTANT says that the value is
-  constant and may be compiled into code. If the variable already has
-  a value, and this is not EQL to the init, the code is not portable
-  (undefined behavior). The third argument is an optional documentation
-  string for the variable."
+  "Define a global constant, saying that the value is constant and may be
+  compiled into code. If the variable already has a value, and this is not
+  EQL to the new value, the code is not portable (undefined behavior). The
+  third argument is an optional documentation string for the variable."
   `(eval-when (:compile-toplevel :load-toplevel :execute)
      (sb!c::%defconstant ',name ,value ',documentation)))
 
@@ -92,7 +91,7 @@
 (defun sb!c::%defconstant (name value doc)
   (unless (symbolp name)
     (error "The constant name is not a symbol: ~S" name))
-  (about-to-modify name)
+  (about-to-modify-symbol-value name)
   (when (looks-like-name-of-special-var-p name)
     (style-warn "defining ~S as a constant, even though the name follows~@
 the usual naming convention (names like *FOO*) for special variables"
@@ -129,7 +128,6 @@ the usual naming convention (names like *FOO*) for special variables"
   ;; will be cross-compiled correctly.
   #-sb-xc-host (setf (symbol-value name) value)
   #+sb-xc-host (progn
-                (/show (symbol-package name))
                 ;; Redefining our cross-compilation host's CL symbols
                 ;; would be poor form.
                 ;;
@@ -178,8 +176,8 @@ the usual naming convention (names like *FOO*) for special variables"
                   ;; 2001-03-24
                   (eval `(defconstant ,name ',value))))
 
-  (setf (info :variable :kind name) :constant)
-  (setf (info :variable :constant-value name) value)
+  (setf (info :variable :kind name) :constant
+       (info :variable :constant-value name) value)
   name)
 \f
 ;;;; DEFINE-COMPILER-MACRO
@@ -200,16 +198,11 @@ the usual naming convention (names like *FOO*) for special variables"
                        :environment environment)
       (let ((def `(lambda (,whole ,environment)
                    ,@local-decs
-                   (block ,(function-name-block-name name)
+                   (block ,(fun-name-block-name name)
                      ,body))))
        `(sb!c::%define-compiler-macro ',name #',def ',lambda-list ,doc)))))
 (defun sb!c::%define-compiler-macro (name definition lambda-list doc)
-  ;; FIXME: Why does this have to be an interpreted function? Shouldn't
-  ;; it get compiled?
-  (aver (sb!eval:interpreted-function-p definition))
-  (setf (sb!eval:interpreted-function-name definition)
-       (format nil "DEFINE-COMPILER-MACRO ~S" name))
-  (setf (sb!eval:interpreted-function-arglist definition) lambda-list)
+  (declare (ignore lambda-list))
   (sb!c::%%define-compiler-macro name definition doc))
 (defun sb!c::%%define-compiler-macro (name definition doc)
   (setf (sb!xc:compiler-macro-function name) definition)
@@ -420,7 +413,7 @@ the usual naming convention (names like *FOO*) for special variables"
 
 (defmacro-mundanely nth-value (n form)
   #!+sb-doc
-  "Evaluates FORM and returns the Nth value (zero based). This involves no
+  "Evaluate FORM and return the Nth value (zero based). This involves no
   consing when N is a trivial constant integer."
   (if (integerp n)
       (let ((dummy-list nil)
@@ -444,29 +437,23 @@ the usual naming convention (names like *FOO*) for special variables"
   #!+sb-doc
   "DECLAIM Declaration*
   Do a declaration or declarations for the global environment."
-  #-sb-xc-host
   `(eval-when (:compile-toplevel :load-toplevel :execute)
-     ,@(mapcar #'(lambda (x)
-                  `(sb!xc:proclaim ',x))
-              specs))
-  ;; KLUDGE: The definition above doesn't work in the cross-compiler,
-  ;; because UNCROSS translates SB!XC:PROCLAIM into CL:PROCLAIM before
-  ;; the form gets executed. Instead, we have to explicitly do the
-  ;; proclamation at macroexpansion time. -- WHN ca. 19990810
-  ;;
-  ;; FIXME: Maybe we don't need this special treatment any more now
-  ;; that we're using DEFMACRO-MUNDANELY instead of DEFMACRO?
-  #+sb-xc-host (progn
-                (mapcar #'sb!xc:proclaim specs)
-                `(progn
-                   ,@(mapcar #'(lambda (x)
-                                 `(sb!xc:proclaim ',x))
-                             specs))))
+     ,@(mapcar (lambda (spec) `(sb!xc:proclaim ',spec))
+              specs)))
 
-(defmacro-mundanely print-unreadable-object ((object stream
-                                             &key type identity)
+(defmacro-mundanely print-unreadable-object ((object stream &key type identity)
                                             &body body)
+  "Output OBJECT to STREAM with \"#<\" prefix, \">\" suffix, optionally
+  with object-type prefix and object-identity suffix, and executing the
+  code in BODY to provide possible further output."
   `(%print-unreadable-object ,object ,stream ,type ,identity
                             ,(if body
                                  `#'(lambda () ,@body)
                                  nil)))
+
+(defmacro-mundanely ignore-errors (&rest forms)
+  #!+sb-doc
+  "Execute FORMS handling ERROR conditions, returning the result of the last
+  form, or (VALUES NIL the-ERROR-that-was-caught) if an ERROR was handled."
+  `(handler-case (progn ,@forms)
+     (error (condition) (values nil condition))))