;;;; This software is part of the SBCL system. See the README file for ;;;; more information. ;;;; ;;;; While most of SBCL is derived from the CMU CL system, the test ;;;; files (like this one) were written from scratch after the fork ;;;; from CMU CL. ;;;; ;;;; This software is in the public domain and is provided with ;;;; absolutely no warranty. See the COPYING and CREDITS files for ;;;; more information. (cl:in-package :cl-user) (load "assertoid.lisp") ;;;; examples from, or close to, the Common Lisp DEFSTRUCT spec ;;; Type mismatch of slot default init value isn't an error until the ;;; default init value is actually used. (The justification is ;;; somewhat bogus, but the requirement is clear.) (defstruct person age (name 007 :type string)) ; not an error until 007 used (make-person :name "James") ; not an error, 007 not used (assert (raises-error? (make-person) type-error)) ;;; FIXME: broken structure slot type checking in sbcl-0.pre7.62 #+nil (assert (raises-error? (setf (person-name (make-person "Q")) 1) type-error)) ;;; basic inheritance (defstruct (astronaut (:include person) (:conc-name astro-)) helmet-size (favorite-beverage 'tang)) (let ((x (make-astronaut :name "Buzz" :helmet-size 17.5))) (assert (equal (person-name x) "Buzz")) (assert (equal (astro-name x) "Buzz")) (assert (eql (astro-favorite-beverage x) 'tang)) (assert (null (astro-age x)))) (defstruct (ancient-astronaut (:include person (age 77))) helmet-size (favorite-beverage 'tang)) (assert (eql (ancient-astronaut-age (make-ancient-astronaut :name "John")) 77)) ;;; interaction of :TYPE and :INCLUDE and :INITIAL-OFFSET (defstruct (binop (:type list) :named (:initial-offset 2)) (operator '? :type symbol) operand-1 operand-2) (defstruct (annotated-binop (:type list) (:initial-offset 3) (:include binop)) commutative associative identity) (assert (equal (make-annotated-binop :operator '* :operand-1 'x :operand-2 5 :commutative t :associative t :identity 1) '(nil nil binop * x 5 nil nil nil t t 1))) ;;; effect of :NAMED on :TYPE (defstruct (named-binop (:type list) :named) (operator '? :type symbol) operand-1 operand-2) (let ((named-binop (make-named-binop :operator '+ :operand-1 'x :operand-2 5))) ;; The data representation is specified to look like this. (assert (equal named-binop '(named-binop + x 5))) ;; A meaningful NAMED-BINOP-P is defined. (assert (named-binop-p named-binop)) (assert (named-binop-p (copy-list named-binop))) (assert (not (named-binop-p (cons 11 named-binop)))) (assert (not (named-binop-p (find-package :cl))))) ;;; example 1 (defstruct town area watertowers (firetrucks 1 :type fixnum) population (elevation 5128 :read-only t)) (let ((town1 (make-town :area 0 :watertowers 0))) (assert (town-p town1)) (assert (not (town-p 1))) (assert (eql (town-area town1) 0)) (assert (eql (town-elevation town1) 5128)) (assert (null (town-population town1))) (setf (town-population town1) 99) (assert (eql (town-population town1) 99)) (let ((town2 (copy-town town1))) (dolist (slot-accessor-name '(town-area town-watertowers town-firetrucks town-population town-elevation)) (assert (eql (funcall slot-accessor-name town1) (funcall slot-accessor-name town2)))) (assert (not (fboundp '(setf town-elevation)))))) ; 'cause it's :READ-ONLY ;;; example 2 (defstruct (clown (:conc-name bozo-)) (nose-color 'red) frizzy-hair-p polkadots) (let ((funny-clown (make-clown))) (assert (eql (bozo-nose-color funny-clown) 'red))) (defstruct (klown (:constructor make-up-klown) (:copier clone-klown) (:predicate is-a-bozo-p)) nose-color frizzy-hair-p polkadots) (assert (is-a-bozo-p (make-up-klown))) ;;;; systematically testing variants of DEFSTRUCT: ;;;; * native, :TYPE LIST, and :TYPE VECTOR ;;; FIXME: things to test: ;;; * Slot readers work. ;;; * Slot writers work. ;;; * Predicates work. ;;; FIXME: things that would be nice to test systematically someday: ;;; * constructors (default, boa..) ;;; * copiers ;;; * no type checks when (> SPEED SAFETY) ;;; * Tests of inclusion would be good. (It's tested very lightly ;;; above, and then tested a fair amount by the system compiling ;;; itself.) (defun string+ (&rest rest) (apply #'concatenate 'string (mapcar #'string rest))) (defun symbol+ (&rest rest) (values (intern (apply #'string+ rest)))) (defun accessor-name (conc-name slot-name) (symbol+ conc-name slot-name)) ;;; Use the ordinary FDEFINITIONs of accessors (not inline expansions) ;;; to read and write a structure slot. (defun read-slot-notinline (conc-name slot-name instance) (funcall (accessor-name conc-name slot-name) instance)) (defun write-slot-notinline (new-value conc-name slot-name instance) (funcall (fdefinition `(setf ,(accessor-name conc-name slot-name))) new-value instance)) ;;; Use inline expansions of slot accessors, if possible, to read and ;;; write a structure slot. (defun read-slot-inline (conc-name slot-name instance) (funcall (compile nil `(lambda (instance) (,(accessor-name conc-name slot-name) instance))) instance)) (defun write-slot-inline (new-value conc-name slot-name instance) (funcall (compile nil `(lambda (new-value instance) (setf (,(accessor-name conc-name slot-name) instance) new-value))) new-value instance)) ;;; Read a structure slot, checking that the inline and out-of-line ;;; accessors give the same result. (defun read-slot (conc-name slot-name instance) (let ((inline-value (read-slot-inline conc-name slot-name instance)) (notinline-value (read-slot-notinline conc-name slot-name instance))) (assert (eql inline-value notinline-value)) inline-value)) ;;; Write a structure slot, using INLINEP argument to decide ;;; on inlineness of accessor used. (defun write-slot (new-value conc-name slot-name instance inlinep) (if inlinep (write-slot-inline new-value conc-name slot-name instance) (write-slot-notinline new-value conc-name slot-name instance))) ;;; bound during the tests so that we can get to it even if the ;;; debugger is having a bad day (defvar *instance*) (defmacro test-variant (defstructname &key colontype boa-constructor-p) `(progn (format t "~&/beginning PROGN for COLONTYPE=~S~%" ',colontype) (defstruct (,defstructname ,@(when colontype `((:type ,colontype))) ,@(when boa-constructor-p `((:constructor ,(symbol+ "CREATE-" defstructname) (id &optional (optional-test 2 optional-test-p) &key (home nil home-p) (no-home-comment "Home package CL not provided.") (comment (if home-p "" no-home-comment)) (refcount (if optional-test-p optional-test nil)) hash weight))))) ;; some ordinary tagged slots id (home nil :type package :read-only t) (comment "" :type simple-string) ;; some raw slots (weight 1.0 :type single-float) (hash 1 :type (integer 1 #.(* 3 most-positive-fixnum)) :read-only t) ;; more ordinary tagged slots (refcount 0 :type (and unsigned-byte fixnum))) (format t "~&/done with DEFSTRUCT~%") (let* ((cn (string+ ',defstructname "-")) ; conc-name (ctor (symbol-function ',(symbol+ (if boa-constructor-p "CREATE-" "MAKE-") defstructname))) (*instance* (funcall ctor ,@(unless boa-constructor-p `(:id)) "some id" ,@(when boa-constructor-p '(1)) :home (find-package :cl) :hash (+ 14 most-positive-fixnum) ,@(unless boa-constructor-p `(:refcount 1))))) ;; Check that ctor set up slot values correctly. (format t "~&/checking constructed structure~%") (assert (string= "some id" (read-slot cn "ID" *instance*))) (assert (eql (find-package :cl) (read-slot cn "HOME" *instance*))) (assert (string= "" (read-slot cn "COMMENT" *instance*))) (assert (= 1.0 (read-slot cn "WEIGHT" *instance*))) (assert (eql (+ 14 most-positive-fixnum) (read-slot cn "HASH" *instance*))) (assert (= 1 (read-slot cn "REFCOUNT" *instance*))) ;; There should be no writers for read-only slots. (format t "~&/checking no read-only writers~%") (assert (not (fboundp `(setf ,(symbol+ cn "HOME"))))) (assert (not (fboundp `(setf ,(symbol+ cn "HASH"))))) ;; (Read-only slot values are checked in the loop below.) (dolist (inlinep '(t nil)) (format t "~&/doing INLINEP=~S~%" inlinep) ;; Fiddle with writable slot values. (let ((new-id (format nil "~S" (random 100))) (new-comment (format nil "~X" (random 5555))) (new-weight (random 10.0))) (write-slot new-id cn "ID" *instance* inlinep) (write-slot new-comment cn "COMMENT" *instance* inlinep) (write-slot new-weight cn "WEIGHT" *instance* inlinep) (assert (eql new-id (read-slot cn "ID" *instance*))) (assert (eql new-comment (read-slot cn "COMMENT" *instance*))) ;;(unless (eql new-weight (read-slot cn "WEIGHT" *instance*)) ;; (error "WEIGHT mismatch: ~S vs. ~S" ;; new-weight (read-slot cn "WEIGHT" *instance*))) (assert (eql new-weight (read-slot cn "WEIGHT" *instance*))))) (format t "~&/done with INLINEP loop~%") ;; :TYPE FOO objects don't go in the Lisp type system, so we ;; can't test TYPEP stuff for them. ;; ;; FIXME: However, when they're named, they do define ;; predicate functions, and we could test those. ,@(unless colontype `(;; Fiddle with predicate function. (let ((pred-name (symbol+ ',defstructname "-P"))) (format t "~&/doing tests on PRED-NAME=~S~%" pred-name) (assert (funcall pred-name *instance*)) (assert (not (funcall pred-name 14))) (assert (not (funcall pred-name "test"))) (assert (not (funcall pred-name (make-hash-table)))) (let ((compiled-pred (compile nil `(lambda (x) (,pred-name x))))) (format t "~&/doing COMPILED-PRED tests~%") (assert (funcall compiled-pred *instance*)) (assert (not (funcall compiled-pred 14))) (assert (not (funcall compiled-pred #())))) ;; Fiddle with TYPEP. (format t "~&/doing TYPEP tests, COLONTYPE=~S~%" ',colontype) (assert (typep *instance* ',defstructname)) (assert (not (typep 0 ',defstructname))) (assert (funcall (symbol+ "TYPEP") *instance* ',defstructname)) (assert (not (funcall (symbol+ "TYPEP") nil ',defstructname))) (let* ((typename ',defstructname) (compiled-typep (compile nil `(lambda (x) (typep x ',typename))))) (assert (funcall compiled-typep *instance*)) (assert (not (funcall compiled-typep nil)))))))) (format t "~&/done with PROGN for COLONTYPE=~S~%" ',colontype))) (test-variant vanilla-struct) (test-variant vector-struct :colontype vector) (test-variant list-struct :colontype list) (test-variant vanilla-struct :boa-constructor-p t) (test-variant vector-struct :colontype vector :boa-constructor-p t) (test-variant list-struct :colontype list :boa-constructor-p t) ;;;; testing raw slots harder ;;;; ;;;; The offsets of raw slots need to be rescaled during the punning ;;;; process which is used to access them. That seems like a good ;;;; place for errors to lurk, so we'll try hunting for them by ;;;; verifying that all the raw slot data gets written successfully ;;;; into the object, can be copied with the object, and can then be ;;;; read back out (with none of it ending up bogusly outside the ;;;; object, so that it couldn't be copied, or bogusly overwriting ;;;; some other raw slot). (defstruct manyraw (a (expt 2 30) :type (unsigned-byte 32)) (b 0.1 :type single-float) (c 0.2d0 :type double-float) (d #c(0.3 0.3) :type (complex single-float)) unraw-slot-just-for-variety (e #c(0.4d0 0.4d0) :type (complex double-float)) (aa (expt 2 30) :type (unsigned-byte 32)) (bb 0.1 :type single-float) (cc 0.2d0 :type double-float) (dd #c(0.3 0.3) :type (complex single-float)) (ee #c(0.4d0 0.4d0) :type (complex double-float))) (defvar *manyraw* (make-manyraw)) (assert (eql (manyraw-a *manyraw*) (expt 2 30))) (assert (eql (manyraw-b *manyraw*) 0.1)) (assert (eql (manyraw-c *manyraw*) 0.2d0)) (assert (eql (manyraw-d *manyraw*) #c(0.3 0.3))) (assert (eql (manyraw-e *manyraw*) #c(0.4d0 0.4d0))) (assert (eql (manyraw-aa *manyraw*) (expt 2 30))) (assert (eql (manyraw-bb *manyraw*) 0.1)) (assert (eql (manyraw-cc *manyraw*) 0.2d0)) (assert (eql (manyraw-dd *manyraw*) #c(0.3 0.3))) (assert (eql (manyraw-ee *manyraw*) #c(0.4d0 0.4d0))) (setf (manyraw-aa *manyraw*) (expt 2 31) (manyraw-bb *manyraw*) 0.11 (manyraw-cc *manyraw*) 0.22d0 (manyraw-dd *manyraw*) #c(0.33 0.33) (manyraw-ee *manyraw*) #c(0.44d0 0.44d0)) (let ((copy (copy-manyraw *manyraw*))) (assert (eql (manyraw-a copy) (expt 2 30))) (assert (eql (manyraw-b copy) 0.1)) (assert (eql (manyraw-c copy) 0.2d0)) (assert (eql (manyraw-d copy) #c(0.3 0.3))) (assert (eql (manyraw-e copy) #c(0.4d0 0.4d0))) (assert (eql (manyraw-aa copy) (expt 2 31))) (assert (eql (manyraw-bb copy) 0.11)) (assert (eql (manyraw-cc copy) 0.22d0)) (assert (eql (manyraw-dd copy) #c(0.33 0.33))) (assert (eql (manyraw-ee copy) #c(0.44d0 0.44d0)))) ;;;; miscellaneous old bugs (defstruct ya-struct) (when (ignore-errors (or (ya-struct-p) 12)) (error "YA-STRUCT-P of no arguments should signal an error.")) (when (ignore-errors (or (ya-struct-p 'too 'many 'arguments) 12)) (error "YA-STRUCT-P of three arguments should signal an error.")) ;;; bug 210: Until sbcl-0.7.8.32 BOA constructors had SAFETY 0 ;;; declared inside on the theory that slot types were already ;;; checked, which bogusly suppressed unbound-variable and other ;;; checks within the evaluation of initforms. (defvar *bug210*) (defstruct (bug210a (:constructor bug210a ())) (slot *bug210*)) (defstruct bug210b (slot *bug210*)) ;;; Because of bug 210, this assertion used to fail. (assert (typep (nth-value 1 (ignore-errors (bug210a))) 'unbound-variable)) ;;; Even with bug 210, these assertions succeeded. (assert (typep (nth-value 1 (ignore-errors *bug210*)) 'unbound-variable)) (assert (typep (nth-value 1 (ignore-errors (make-bug210b))) 'unbound-variable)) ;;; In sbcl-0.7.8.53, DEFSTRUCT blew up in non-toplevel contexts ;;; because it implicitly assumed that EVAL-WHEN (COMPILE) stuff ;;; setting up compiler-layout information would run before the ;;; constructor function installing the layout was compiled. Make sure ;;; that doesn't happen again. (defun foo-0-7-8-53 () (defstruct foo-0-7-8-53 x (y :not))) (assert (not (find-class 'foo-0-7-8-53 nil))) (foo-0-7-8-53) (assert (find-class 'foo-0-7-8-53 nil)) (let ((foo-0-7-8-53 (make-foo-0-7-8-53 :x :s))) (assert (eq (foo-0-7-8-53-x foo-0-7-8-53) :s)) (assert (eq (foo-0-7-8-53-y foo-0-7-8-53) :not))) ;;; success (format t "~&/returning success~%") (quit :unix-status 104)