33 lines
604 B
Common Lisp
33 lines
604 B
Common Lisp
;;;; cl-scopes/forge - may the forge be with you!
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;;;; A Forth-like interpreter implemented in Common Lisp.
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(defpackage :scopes/forge/sf
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(:use :common-lisp)
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(:local-nicknames (:iter :scopes/util/iter))
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(:export #:*stack*
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#:add
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#:pushd #:popd))
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(defpackage :sf-builtin)
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(defpackage :sf-user)
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(in-package :scopes/forge/sf)
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(defvar *stack* nil)
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;;;; builtins
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(defun reg2 (sym fn)
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(setf (fdefinition sym) #'(lambda ()
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(pushd (funcall fn (popd) (popd))))))
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(reg2 'add #'+)
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;;;; core definitions
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(defun pushd (v)
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(push v *stack*))
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(defun popd ()
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(pop *stack*))
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