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eval.impure.lisp
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eval.impure.lisp
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;;;; various tests of EVAL with side effects
;;;; 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.
;;;; Note: this stuff gets loaded in (by LOAD) and is therefore
;;;; evaluated by EVAL, rather than compiled and then loaded; this is
;;;; why this idiom (a sequence of top-level forms) works as a test of
;;;; EVAL.
;;; Until sbcl-0.7.9.x, EVAL was not correctly treating LOCALLY,
;;; MACROLET and SYMBOL-MACROLET, which should preserve top-levelness
;;; of their body forms:
;;; LOCALLY
(locally (defstruct locally-struct a (b t)))
(let ((x (make-locally-struct :a 1)))
(assert (eql (locally-struct-a x) 1))
(assert (eql (locally-struct-b x) t)))
(locally
(defmacro locally-macro (x) `(+ ,x 1))
(assert (= (locally-macro 3) 4)))
(locally (declare (special x))
(defun locally-special-test ()
x)
(defun locally-special-test-aux ()
(let ((x 1))
(declare (special x))
(locally-special-test)))
(assert (= (locally-special-test-aux) 1)))
;;; MACROLET
(macrolet ()
(defstruct macrolet-struct a (b t)))
(let ((x (make-macrolet-struct :a 1)))
(assert (eql (macrolet-struct-a x) 1))
(assert (eql (macrolet-struct-b x) t)))
(macrolet ()
(defmacro macrolet-macro (x) `(+ ,x 1))
(assert (= (macrolet-macro 3) 4)))
(locally (declare (special x))
(defun macrolet-special-test ()
x)
(defun macrolet-special-test-aux ()
(let ((x 1))
(declare (special x))
(macrolet-special-test)))
(assert (= (macrolet-special-test-aux) 1)))
(macrolet ((foo (x) `(macrolet-bar ,x)))
(defmacro macrolet-bar (x) `(+ ,x 1))
(assert (= (foo 1) 2)))
;;; SYMBOL-MACROLET
(symbol-macrolet ()
(defstruct symbol-macrolet-struct a (b t)))
(let ((x (make-symbol-macrolet-struct :a 1)))
(assert (eql (symbol-macrolet-struct-a x) 1))
(assert (eql (symbol-macrolet-struct-b x) t)))
(symbol-macrolet ()
(defmacro symbol-macrolet-macro (x) `(+ ,x 1))
(assert (= (symbol-macrolet-macro 3) 4)))
(locally (declare (special x))
(defun symbol-macrolet-special-test ()
x)
(defun symbol-macrolet-special-test-aux ()
(let ((x 1))
(declare (special x))
(symbol-macrolet-special-test)))
(assert (= (symbol-macrolet-special-test-aux) 1)))
(symbol-macrolet ((foo (symbol-macrolet-bar 1)))
(defmacro symbol-macrolet-bar (x) `(+ ,x 1))
(assert (= foo 2)))
;;; Bug reported by Paul Dietz: CONSTANTP on a self-evaluating object
;;; must return T
(assert (constantp (find-class 'symbol)))
(assert (constantp #p""))
;;; More CONSTANTP tests
;;; form constantp sb-int:constant-form-value
(dolist (test '((t t t)
(x nil)
('x t x)
(:keyword t :keyword)
(42 t 42)
((if t :ok x) t :ok)
((if t x :no) nil)
((progn
(error "oops")
t) nil)
((progn 1 2 3) t 3)
((block foo :good) t :good)
((block foo
(return-from foo t)) nil)
((progv
(list (gensym))
'(1)
(+ 1)) nil)
((progv
'(x)
(list (random 2))
x) nil)
((progv
'(x)
'(1)
(1+ x)) t 2)
((progv '(x) '(t)
(if x 1 2)) t 1)
((unwind-protect 1 nil) t 1)
((unwind-protect 1
(xxx)) nil)
((the integer 1) t 1)
((the integer (+ 1 1)) t 2)
((the integer (foo)) nil)
((the symbol 1) nil)
((the "bad type" 1) nil)
((multiple-value-prog1
(+ 1 1)
:nada) t 2)
((multiple-value-prog1
:nada
(/ 1 0)) nil)
((/ 1 0) nil)
((/ 1 1) t 1)
((+ 1 2) t 3)))
(destructuring-bind (form c &optional v) test
(assert (eql (constantp form) c))
(when c
(assert (eql v (sb-int:constant-form-value form))))))
;;; DEFPARAMETER must assign a dynamic variable
(let ((var (gensym)))
(assert (equal (eval `(list (let ((,var 1))
(defparameter ,var 2)
,var)
,var))
'(1 2))))
;;; Bug 264: SYMBOL-MACROLET did not check for a bound SPECIAL
;;; declaration
(assert-error (progv '(foo) '(1)
(eval '(symbol-macrolet ((foo 3))
(declare (special foo))
foo)))
error)
;;; MAKE-PACKAGE (and other &key functions) should signal an error
;;; when given a NIL key. This is kind of a compiler test really, but
;;; this'll do as a resting place.
(handler-case
(eval '(make-package "FOO" nil nil))
(error () :ok)
(:no-error (c) (error "MAKE-PACKAGE succeeded: ~S" c)))
;;; FUNCTION
(defun function-eq-test ()
'ok)
(trace function-eq-test)
(assert (eq (eval '(function function-eq-test))
(funcall (compile nil '(lambda () (function function-eq-test))))))
;;; No extra output, please
(assert (equal ".."
(with-output-to-string (*standard-output*)
(eval '(progn (princ ".") (let ((x 42)) t) (princ "."))))))
;;; IF
(defun true () t)
(defun false () nil)
(defmacro oops () (throw :oops (list)))
(defun test-eval (ok form) (assert (eq ok (catch :oops (eval form)))))
(test-eval t '(if (false) (oops) t))
(test-eval t '(if (true) t (oops)))
(test-eval nil '(if (not (if (false) t)) (oops)))
;;; TAGBODY
;;; As of SBCL 1.0.1.8, TAGBODY should not accept duplicate go tags,
;;; yet choked on two duplicate tags. Note that this test asserts a
;;; failure.
(with-test (:name :tagbody-dual-go-tags)
(progn
(defun tagbody-dual-go-tags ()
(restart-case
(handler-bind ((error (lambda (c)
(declare (ignore c))
(invoke-restart 'NOT-AN-ERROR))))
(tagbody :A :A) nil)
(NOT-AN-ERROR () t)))
(assert (tagbody-dual-go-tags))))
;;; Ensure that NIL is a valid go tag.
(with-test (:name :tagbody-nil-is-valid-tag)
(progn
(defun tagbody-nil-is-valid-tag ()
(tagbody (go NIL) NIL) t)
(assert (tagbody-nil-is-valid-tag))))
;;; top-level DECLARE is formally undefined, but we want it to raise
;;; an error rather than silently return NIL.
(defvar *scratch*)
(with-test (:name :toplevel-declare)
(assert-error (eval '(declare (type pathname *scratch*)))))
(with-test (:name (eval :no-compiler-notes))
(handler-bind ((sb-ext:compiler-note #'error))
(let ((sb-ext:*evaluator-mode* :compile))
(eval '(let ((x 42))
(if nil x)))
(eval '(let ((* 13))
(let ((x 42)
(y *))
(declare (optimize speed))
(+ x y)))))))
(with-test (:name :bug-238)
(let ((sb-ext:*evaluator-mode* :compile))
(handler-bind ((sb-ext:compiler-note #'error))
(eval '(defclass bug-238 () ()))
(eval '(defmethod bug-238 ((x bug-238) (bug-238 bug-238))
(call-next-method)))
(eval '(handler-case
(with-input-from-string (*query-io* " no")
(yes-or-no-p))
(simple-type-error () 'error)))
t)))
(with-test (:name :bug-524707 :skipped-on (not :sb-eval))
(let ((*evaluator-mode* :interpret)
(lambda-form '(lambda (x) (declare (fixnum x)) (1+ x))))
(let ((fun (eval lambda-form)))
(assert (equal lambda-form (function-lambda-expression fun))))))
(with-test (:name (eval :source-context-in-compiler))
(let ((noise (with-output-to-string (*error-output*)
(let ((*evaluator-mode* :compile))
(eval `(defun source-context-test (x) y))))))
(with-input-from-string (s noise)
(assert (equal "; in: DEFUN SOURCE-CONTEXT-TEST" (read-line s))))))
(with-test (:name (eval :empty-let-is-not-toplevel))
(let ((sb-ext:*evaluator-mode* :compile))
(eval `(let ()
(defmacro empty-let-is-not-toplevel-x () :macro)
(defun empty-let-is-not-toplevel-fun ()
(empty-let-is-not-toplevel-x))))
(eval `(defun empty-let-is-not-toplevel-x () :fun))
(assert (eq :fun (empty-let-is-not-toplevel-fun))))
;; While at it, test that we get the late binding under
;; interpreter mode.
#+sb-eval
(let ((sb-ext:*evaluator-mode* :interpret))
(eval `(let ()
(defmacro empty-let-is-not-toplevel-x () :macro)
(defun empty-let-is-not-toplevel-fun ()
(empty-let-is-not-toplevel-x))))
(assert (eq :macro (empty-let-is-not-toplevel-fun)))
(eval `(defun empty-let-is-not-toplevel-x () :fun))
(assert (eq :fun (empty-let-is-not-toplevel-fun)))))
(with-test (:name (eval function-lambda-expression))
(assert (equal (function-lambda-expression
(eval `(progn
(defun eval-fle-1 (x) (+ x 1))
#'eval-fle-1)))
#+interpreter
`(sb-int:named-lambda eval-fle-1 (x)
(block eval-fle-1
(+ x 1)))
#-interpreter
`(lambda (x)
(block eval-fle-1
(+ x 1)))))
(assert (equal (function-lambda-expression
(eval `(lambda (x y z) (+ x 1 y z))))
`(lambda (x y z) (+ x 1 y z)))))
(with-test (:name (:bug-573747 eval :compile))
(let ((*out* (make-string-output-stream))
(sb-ext:*evaluator-mode* :compile))
(declare (special *out*))
(assert-error (eval '(declare (print "foo" *out*))))
(assert (string= (get-output-stream-string *out*) ""))))
(with-test (:name (:bug-573747 eval :interpret))
(let ((*out* (make-string-output-stream))
(sb-ext:*evaluator-mode* :interpret))
(declare (special *out*))
(assert-error (eval '(declare (print "foo" *out*))))
(assert (string= (get-output-stream-string *out*) ""))))
(with-test (:name :the-keyword-not-borked)
(assert (the (or integer keyword) :foo)))
;; If the DEFUN macro produces a style-warning, it needs to perform the
;; effect of defun no matter what. The style-warning comes from an EVAL-WHEN,
;; not as part of the execution-time behavior of %DEFUN because it is neither
;; polite nor useful to issue a warning about the co-existence of a DEFSETF
;; and DEFUN SETF after compile-time. The other viable alternative would have
;; been to remove the :EXECUTE situation from the expansion of DEFUN
;; where it signal to warning.
(with-test (:name :handler-case-does-not-bork-defun)
(defsetf bar set-bar)
(handler-case (defun (setf bar) (newval x) (declare (ignore newval x)))
(style-warning () 'drat))
(assert (fboundp '(setf bar))))
;;; success