49 lines
1.6 KiB
Common Lisp
49 lines
1.6 KiB
Common Lisp
;;; Copyright 2013 Google Inc.
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;;;
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;;; Licensed under the Apache License, Version 2.0 (the "License");
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;;; you may not use this file except in compliance with the License.
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;;; You may obtain a copy of the License at
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;;;
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;;; http://www.apache.org/licenses/LICENSE-2.0
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;;;
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;;; Unless required by applicable law or agreed to in writing, software
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;;; distributed under the License is distributed on an "AS IS" BASIS,
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;;; WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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;;; See the License for the specific language governing permissions and
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;;; limitations under the License.
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(define-test shadowing
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(assert-equal '(4 2) (let ((z 4)) (list z (let ((z 2)) z)))))
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(defun block-1 ()
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(block here
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(return-from here 4)
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5))
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(defun block-2 ()
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(block outer
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(block inner
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(return-from outer 'space)
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(return-from inner 'tube))
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(return-from outer 'valve)))
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(define-test block-return-from
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(assert-equal 4 (block-1))
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(assert-equal 'space (block-2)))
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;;; See http://www.gigamonkeys.com/book/variables.html
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(define-test lexical-variables-can-be-enclosed
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(assert-equal 10 (let ((f (let ((x 10))
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(lambda () x))))
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(let ((x 20))
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(funcall f)))))
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(define-test dynamic-variables-are-affected-by-execution-path
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(assert-equal 20 (let ((f (let ((x 10))
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(declare (special x))
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(lambda () x))))
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(let ((x 20))
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(declare (special x))
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(funcall f)))))
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