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82b3e2c612
ASSERT_SYNTAX to signal syntax errors. Avoid unnecessary consing when creating the memoized code. (scm_m_atbind): Reversed the order, in which the init expressions are stored and executed. The order of execution is now equal to the order in which the initializers of the let-forms are executed. Use check_bindings and transform_bindings. (SCM_CEVAL): Eliminated SCM_NIMP in favor of more appropriate !SCM_NULLP. Added some comments. * test-suite/tests/dynamic-scope.test (exception:missing-expr): Introduced temporarily until all memoizers use the new way of error reporting.
91 lines
2.7 KiB
Scheme
91 lines
2.7 KiB
Scheme
;;;; -*- scheme -*-
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;;;; dynamic-scop.test --- test suite for dynamic scoping constructs
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;;;;
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;;;; Copyright (C) 2001 Free Software Foundation, Inc.
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;;;;
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;;;; This program is free software; you can redistribute it and/or modify
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;;;; it under the terms of the GNU General Public License as published by
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;;;; the Free Software Foundation; either version 2, or (at your option)
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;;;; any later version.
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;;;;
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;;;; This program is distributed in the hope that it will be useful,
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;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;;; GNU General Public License for more details.
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;;;;
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;;;; You should have received a copy of the GNU General Public License
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;;;; along with this software; see the file COPYING. If not, write to
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;;;; the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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;;;; Boston, MA 02111-1307 USA
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(define-module (test-suite test-dynamic-scope)
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:use-module (test-suite lib))
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(define exception:missing-expr
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(cons 'syntax-error "Missing expression"))
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(define exception:bad-binding
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(cons 'syntax-error "Bad binding"))
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(define exception:duplicate-binding
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(cons 'syntax-error "Duplicate binding"))
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(define global-a 0)
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(define (fetch-global-a) global-a)
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(with-test-prefix "dynamic scope"
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(pass-if "@bind binds"
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(= (@bind ((global-a 1)) (fetch-global-a)) 1))
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(pass-if "@bind unbinds"
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(begin
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(set! global-a 0)
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(@bind ((global-a 1)) (fetch-global-a))
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(= global-a 0)))
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(pass-if-exception "duplicate @binds"
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exception:duplicate-binding
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(eval '(@bind ((a 1) (a 2)) (+ a a))
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(interaction-environment)))
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(pass-if-exception "@bind missing expression"
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exception:missing-expr
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(eval '(@bind ((global-a 1)))
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(interaction-environment)))
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(pass-if-exception "@bind bad bindings"
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exception:bad-binding
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(eval '(@bind (a) #f)
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(interaction-environment)))
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(pass-if-exception "@bind bad bindings"
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exception:bad-binding
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(eval '(@bind ((a)) #f)
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(interaction-environment)))
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(pass-if "@bind and dynamic-wind"
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(letrec ((co-routine #f)
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(spawn (lambda (proc)
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(set! co-routine proc)))
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(yield (lambda (val)
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(call-with-current-continuation
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(lambda (k)
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(let ((next co-routine))
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(set! co-routine k)
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(next val)))))))
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(spawn (lambda (val)
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(@bind ((global-a 'inside))
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(yield global-a)
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(yield global-a))))
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(set! global-a 'outside)
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(let ((inside-a (yield #f)))
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(let ((outside-a global-a))
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(let ((inside-a2 (yield #f)))
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(and (eq? inside-a 'inside)
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(eq? outside-a 'outside)
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(eq? inside-a2 'inside))))))))
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