+
+;;; Variations of SPECIFIER-TYPE for parsing possibly wrong
+;;; specifiers.
+(macrolet
+ ((deffrob (basic careful compiler transform)
+ `(progn
+ (defun ,careful (specifier)
+ (handler-case (,basic specifier)
+ (simple-error (condition)
+ (values nil (list* (simple-condition-format-control condition)
+ (simple-condition-format-arguments condition))))))
+ (defun ,compiler (specifier)
+ (multiple-value-bind (type error-args) (,careful specifier)
+ (or type
+ (apply #'compiler-error error-args))))
+ (defun ,transform (specifier)
+ (multiple-value-bind (type error-args) (,careful specifier)
+ (or type
+ (apply #'give-up-ir1-transform
+ error-args)))))))
+ (deffrob specifier-type careful-specifier-type compiler-specifier-type ir1-transform-specifier-type)
+ (deffrob values-specifier-type careful-values-specifier-type compiler-values-specifier-type ir1-transform-values-specifier-type))
+