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https://git.savannah.gnu.org/git/guile.git
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1e5c32054e
* module/language/ecmascript/compile-tree-il.scm (with-return-prompt): The body of an escape-only prompt is no longer a thunk. Adapt.
576 lines
23 KiB
Scheme
576 lines
23 KiB
Scheme
;;; ECMAScript for Guile
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;; Copyright (C) 2009, 2011 Free Software Foundation, Inc.
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;;;; This library is free software; you can redistribute it and/or
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;;;; modify it under the terms of the GNU Lesser General Public
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;;;; License as published by the Free Software Foundation; either
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;;;; version 3 of the License, or (at your option) any later version.
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;;;;
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;;;; This library 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 GNU
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;;;; Lesser General Public License for more details.
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;;;;
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;;;; You should have received a copy of the GNU Lesser General Public
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;;;; License along with this library; if not, write to the Free Software
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;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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;;; Code:
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(define-module (language ecmascript compile-tree-il)
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#:use-module (language tree-il)
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#:use-module (ice-9 receive)
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#:use-module (system base pmatch)
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#:use-module (srfi srfi-1)
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#:export (compile-tree-il))
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(define-syntax-rule (-> (type arg ...))
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`(type ,arg ...))
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(define-syntax-rule (@implv sym)
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(-> (@ '(language ecmascript impl) 'sym)))
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(define-syntax-rule (@impl sym arg ...)
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(-> (call (@implv sym) arg ...)))
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(define (empty-lexical-environment)
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'())
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(define (econs name gensym env)
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(acons name (-> (lexical name gensym)) env))
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(define (lookup name env)
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(or (assq-ref env name)
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(-> (toplevel name))))
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(define (compile-tree-il exp env opts)
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(values
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(parse-tree-il
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(-> (begin (@impl js-init)
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(comp exp (empty-lexical-environment)))))
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env
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env))
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(define (location x)
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(and (pair? x)
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(let ((props (source-properties x)))
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(and (not (null? props))
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props))))
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;; for emacs:
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;; (put 'pmatch/source 'scheme-indent-function 1)
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(define-syntax-rule (pmatch/source x clause ...)
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(let ((x x))
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(let ((res (pmatch x
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clause ...)))
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(let ((loc (location x)))
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(if loc
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(set-source-properties! res (location x))))
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res)))
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(define current-return-tag (make-parameter #f))
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(define (return expr)
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(-> (abort (or (current-return-tag) (error "return outside function"))
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(list expr)
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(-> (const '())))))
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(define (with-return-prompt body-thunk)
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(let ((tag (gensym "return")))
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(parameterize ((current-return-tag
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(-> (lexical 'return tag))))
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(-> (let '(return) (list tag)
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(list (-> (primcall 'make-prompt-tag)))
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(-> (prompt #t
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(current-return-tag)
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(body-thunk)
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(let ((val (gensym "val")))
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(-> (lambda '()
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(-> (lambda-case
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`(((k val) #f #f #f () (,(gensym) ,val))
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,(-> (lexical 'val val)))))))))))))))
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(define (comp x e)
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(let ((l (location x)))
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(define (let1 what proc)
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(let ((sym (gensym)))
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(-> (let (list sym) (list sym) (list what)
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(proc sym)))))
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(define (begin1 what proc)
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(let1 what (lambda (v)
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(-> (begin (proc v)
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(-> (lexical v v)))))))
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(pmatch/source x
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(null
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;; FIXME, null doesn't have much relation to EOL...
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(-> (const '())))
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(true
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(-> (const #t)))
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(false
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(-> (const #f)))
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((number ,num)
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(-> (const num)))
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((string ,str)
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(-> (const str)))
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(this
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(@impl get-this))
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((+ ,a)
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(-> (call (-> (primitive '+))
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(@impl ->number (comp a e))
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(-> (const 0)))))
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((- ,a)
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(-> (call (-> (primitive '-)) (-> (const 0)) (comp a e))))
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((~ ,a)
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(@impl bitwise-not (comp a e)))
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((! ,a)
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(@impl logical-not (comp a e)))
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((+ ,a ,b)
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(-> (call (-> (primitive '+)) (comp a e) (comp b e))))
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((- ,a ,b)
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(-> (call (-> (primitive '-)) (comp a e) (comp b e))))
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((/ ,a ,b)
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(-> (call (-> (primitive '/)) (comp a e) (comp b e))))
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((* ,a ,b)
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(-> (call (-> (primitive '*)) (comp a e) (comp b e))))
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((% ,a ,b)
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(@impl mod (comp a e) (comp b e)))
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((<< ,a ,b)
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(@impl shift (comp a e) (comp b e)))
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((>> ,a ,b)
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(@impl shift (comp a e) (comp `(- ,b) e)))
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((< ,a ,b)
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(-> (call (-> (primitive '<)) (comp a e) (comp b e))))
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((<= ,a ,b)
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(-> (call (-> (primitive '<=)) (comp a e) (comp b e))))
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((> ,a ,b)
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(-> (call (-> (primitive '>)) (comp a e) (comp b e))))
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((>= ,a ,b)
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(-> (call (-> (primitive '>=)) (comp a e) (comp b e))))
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((in ,a ,b)
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(@impl has-property? (comp a e) (comp b e)))
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((== ,a ,b)
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(-> (call (-> (primitive 'equal?)) (comp a e) (comp b e))))
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((!= ,a ,b)
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(-> (call (-> (primitive 'not))
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(-> (call (-> (primitive 'equal?))
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(comp a e) (comp b e))))))
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((=== ,a ,b)
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(-> (call (-> (primitive 'eqv?)) (comp a e) (comp b e))))
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((!== ,a ,b)
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(-> (call (-> (primitive 'not))
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(-> (call (-> (primitive 'eqv?))
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(comp a e) (comp b e))))))
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((& ,a ,b)
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(@impl band (comp a e) (comp b e)))
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((^ ,a ,b)
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(@impl bxor (comp a e) (comp b e)))
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((bor ,a ,b)
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(@impl bior (comp a e) (comp b e)))
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((and ,a ,b)
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(-> (if (@impl ->boolean (comp a e))
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(comp b e)
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(-> (const #f)))))
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((or ,a ,b)
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(let1 (comp a e)
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(lambda (v)
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(-> (if (@impl ->boolean (-> (lexical v v)))
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(-> (lexical v v))
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(comp b e))))))
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((if ,test ,then ,else)
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(-> (if (@impl ->boolean (comp test e))
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(comp then e)
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(comp else e))))
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((if ,test ,then)
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(-> (if (@impl ->boolean (comp test e))
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(comp then e)
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(@implv *undefined*))))
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((postinc (ref ,foo))
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(begin1 (comp `(ref ,foo) e)
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(lambda (var)
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(-> (set! (lookup foo e)
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(-> (call (-> (primitive '+))
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(-> (lexical var var))
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(-> (const 1)))))))))
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((postinc (pref ,obj ,prop))
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(let1 (comp obj e)
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(lambda (objvar)
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(begin1 (@impl pget
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(-> (lexical objvar objvar))
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(-> (const prop)))
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(lambda (tmpvar)
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(@impl pput
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(-> (lexical objvar objvar))
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(-> (const prop))
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(-> (call (-> (primitive '+))
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(-> (lexical tmpvar tmpvar))
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(-> (const 1))))))))))
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((postinc (aref ,obj ,prop))
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(let1 (comp obj e)
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(lambda (objvar)
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(let1 (comp prop e)
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(lambda (propvar)
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(begin1 (@impl pget
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(-> (lexical objvar objvar))
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(-> (lexical propvar propvar)))
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(lambda (tmpvar)
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(@impl pput
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(-> (lexical objvar objvar))
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(-> (lexical propvar propvar))
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(-> (call (-> (primitive '+))
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(-> (lexical tmpvar tmpvar))
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(-> (const 1))))))))))))
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((postdec (ref ,foo))
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(begin1 (comp `(ref ,foo) e)
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(lambda (var)
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(-> (set (lookup foo e)
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(-> (call (-> (primitive '-))
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(-> (lexical var var))
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(-> (const 1)))))))))
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((postdec (pref ,obj ,prop))
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(let1 (comp obj e)
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(lambda (objvar)
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(begin1 (@impl pget
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(-> (lexical objvar objvar))
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(-> (const prop)))
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(lambda (tmpvar)
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(@impl pput
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(-> (lexical objvar objvar))
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(-> (const prop))
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(-> (call (-> (primitive '-))
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(-> (lexical tmpvar tmpvar))
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(-> (const 1))))))))))
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((postdec (aref ,obj ,prop))
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(let1 (comp obj e)
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(lambda (objvar)
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(let1 (comp prop e)
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(lambda (propvar)
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(begin1 (@impl pget
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(-> (lexical objvar objvar))
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(-> (lexical propvar propvar)))
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(lambda (tmpvar)
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(@impl pput
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(-> (lexical objvar objvar))
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(-> (lexical propvar propvar))
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(-> (inline
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'- (-> (lexical tmpvar tmpvar))
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(-> (const 1))))))))))))
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((preinc (ref ,foo))
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(let ((v (lookup foo e)))
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(-> (begin
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(-> (set! v
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(-> (call (-> (primitive '+))
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v
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(-> (const 1))))))
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v))))
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((preinc (pref ,obj ,prop))
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(let1 (comp obj e)
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(lambda (objvar)
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(begin1 (-> (call (-> (primitive '+))
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(@impl pget
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(-> (lexical objvar objvar))
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(-> (const prop)))
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(-> (const 1))))
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(lambda (tmpvar)
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(@impl pput (-> (lexical objvar objvar))
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(-> (const prop))
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(-> (lexical tmpvar tmpvar))))))))
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((preinc (aref ,obj ,prop))
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(let1 (comp obj e)
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(lambda (objvar)
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(let1 (comp prop e)
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(lambda (propvar)
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(begin1 (-> (call (-> (primitive '+))
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(@impl pget
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(-> (lexical objvar objvar))
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(-> (lexical propvar propvar)))
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(-> (const 1))))
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(lambda (tmpvar)
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(@impl pput
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(-> (lexical objvar objvar))
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(-> (lexical propvar propvar))
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(-> (lexical tmpvar tmpvar))))))))))
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((predec (ref ,foo))
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(let ((v (lookup foo e)))
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(-> (begin
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(-> (set! v
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(-> (call (-> (primitive '-))
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v
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(-> (const 1))))))
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v))))
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((predec (pref ,obj ,prop))
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(let1 (comp obj e)
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(lambda (objvar)
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(begin1 (-> (call (-> (primitive '-))
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(@impl pget
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(-> (lexical objvar objvar))
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(-> (const prop)))
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(-> (const 1))))
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(lambda (tmpvar)
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(@impl pput
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(-> (lexical objvar objvar))
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(-> (const prop))
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(-> (lexical tmpvar tmpvar))))))))
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((predec (aref ,obj ,prop))
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(let1 (comp obj e)
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(lambda (objvar)
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(let1 (comp prop e)
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(lambda (propvar)
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(begin1 (-> (call (-> (primitive '-))
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(@impl pget
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(-> (lexical objvar objvar))
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(-> (lexical propvar propvar)))
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(-> (const 1))))
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(lambda (tmpvar)
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(@impl pput
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(-> (lexical objvar objvar))
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(-> (lexical propvar propvar))
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(-> (lexical tmpvar tmpvar))))))))))
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((ref ,id)
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(lookup id e))
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((var . ,forms)
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`(begin
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,@(map (lambda (form)
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(pmatch form
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((,x ,y)
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(-> (define x (comp y e))))
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((,x)
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(-> (define x (@implv *undefined*))))
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(else (error "bad var form" form))))
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forms)))
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((begin)
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(-> (void)))
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((begin ,form)
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(comp form e))
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((begin . ,forms)
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`(begin ,@(map (lambda (x) (comp x e)) forms)))
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((lambda ,formals ,body)
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(let ((syms (map (lambda (x)
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(gensym (string-append (symbol->string x) " ")))
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formals)))
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`(lambda ()
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(lambda-case
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((() ,formals #f #f ,(map (lambda (x) (@implv *undefined*)) formals) ,syms)
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,(with-return-prompt
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(lambda ()
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(comp-body e body formals syms))))))))
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((call/this ,obj ,prop . ,args)
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(@impl call/this*
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obj
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(-> (lambda '()
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`(lambda-case
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((() #f #f #f () ())
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(call ,(@impl pget obj prop) ,@args)))))))
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((call (pref ,obj ,prop) ,args)
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(comp `(call/this ,(comp obj e)
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,(-> (const prop))
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,@(map (lambda (x) (comp x e)) args))
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e))
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((call (aref ,obj ,prop) ,args)
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(comp `(call/this ,(comp obj e)
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,(comp prop e)
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,@(map (lambda (x) (comp x e)) args))
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e))
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((call ,proc ,args)
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`(call ,(comp proc e)
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,@(map (lambda (x) (comp x e)) args)))
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((return ,expr)
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(return (comp expr e)))
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((array . ,args)
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`(call ,(@implv new-array)
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,@(map (lambda (x) (comp x e)) args)))
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((object . ,args)
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`(call ,(@implv new-object)
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,@(map (lambda (x)
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(pmatch x
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((,prop ,val)
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(-> (call (-> (primitive 'cons))
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(-> (const prop))
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(comp val e))))
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(else
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(error "bad prop-val pair" x))))
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args)))
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((pref ,obj ,prop)
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(@impl pget
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(comp obj e)
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(-> (const prop))))
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((aref ,obj ,index)
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(@impl pget
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(comp obj e)
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(comp index e)))
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((= (ref ,name) ,val)
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(let ((v (lookup name e)))
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(-> (begin
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(-> (set! v (comp val e)))
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v))))
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((= (pref ,obj ,prop) ,val)
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(@impl pput
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(comp obj e)
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(-> (const prop))
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(comp val e)))
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((= (aref ,obj ,prop) ,val)
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(@impl pput
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(comp obj e)
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(comp prop e)
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(comp val e)))
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((+= ,what ,val)
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(comp `(= ,what (+ ,what ,val)) e))
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((-= ,what ,val)
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(comp `(= ,what (- ,what ,val)) e))
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((/= ,what ,val)
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(comp `(= ,what (/ ,what ,val)) e))
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((*= ,what ,val)
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(comp `(= ,what (* ,what ,val)) e))
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((%= ,what ,val)
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(comp `(= ,what (% ,what ,val)) e))
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((>>= ,what ,val)
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(comp `(= ,what (>> ,what ,val)) e))
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((<<= ,what ,val)
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(comp `(= ,what (<< ,what ,val)) e))
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((>>>= ,what ,val)
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(comp `(= ,what (>>> ,what ,val)) e))
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((&= ,what ,val)
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(comp `(= ,what (& ,what ,val)) e))
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((bor= ,what ,val)
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(comp `(= ,what (bor ,what ,val)) e))
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((^= ,what ,val)
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(comp `(= ,what (^ ,what ,val)) e))
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((new ,what ,args)
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(@impl new
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(map (lambda (x) (comp x e))
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(cons what args))))
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((delete (pref ,obj ,prop))
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(@impl pdel
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(comp obj e)
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(-> (const prop))))
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((delete (aref ,obj ,prop))
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(@impl pdel
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(comp obj e)
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(comp prop e)))
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((void ,expr)
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(-> (begin
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(comp expr e)
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(@implv *undefined*))))
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((typeof ,expr)
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(@impl typeof
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(comp expr e)))
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((do ,statement ,test)
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(let ((%loop (gensym "%loop "))
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(%continue (gensym "%continue ")))
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(let ((e (econs '%loop %loop (econs '%continue %continue e))))
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(-> (letrec '(%loop %continue) (list %loop %continue)
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(list (-> (lambda '()
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(-> (lambda-case
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`((() #f #f #f () ())
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,(-> (begin
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(comp statement e)
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(-> (call (-> (lexical '%continue %continue)))))))))))
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(-> (lambda '()
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(-> (lambda-case
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`((() #f #f #f () ())
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,(-> (if (@impl ->boolean (comp test e))
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(-> (call (-> (lexical '%loop %loop))))
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(@implv *undefined*)))))))))
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(-> (call (-> (lexical '%loop %loop)))))))))
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((while ,test ,statement)
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(let ((%continue (gensym "%continue ")))
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(let ((e (econs '%continue %continue e)))
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(-> (letrec '(%continue) (list %continue)
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(list (-> (lambda '()
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(-> (lambda-case
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`((() #f #f #f () ())
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,(-> (if (@impl ->boolean (comp test e))
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(-> (begin (comp statement e)
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(-> (call (-> (lexical '%continue %continue))))))
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(@implv *undefined*)))))))))
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(-> (call (-> (lexical '%continue %continue)))))))))
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((for ,init ,test ,inc ,statement)
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(let ((%continue (gensym "%continue ")))
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(let ((e (econs '%continue %continue e)))
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(-> (letrec '(%continue) (list %continue)
|
|
(list (-> (lambda '()
|
|
(-> (lambda-case
|
|
`((() #f #f #f () ())
|
|
,(-> (if (if test
|
|
(@impl ->boolean (comp test e))
|
|
(comp 'true e))
|
|
(-> (begin (comp statement e)
|
|
(comp (or inc '(begin)) e)
|
|
(-> (call (-> (lexical '%continue %continue))))))
|
|
(@implv *undefined*)))))))))
|
|
(-> (begin (comp (or init '(begin)) e)
|
|
(-> (call (-> (lexical '%continue %continue)))))))))))
|
|
|
|
((for-in ,var ,object ,statement)
|
|
(let ((%enum (gensym "%enum "))
|
|
(%continue (gensym "%continue ")))
|
|
(let ((e (econs '%enum %enum (econs '%continue %continue e))))
|
|
(-> (letrec '(%enum %continue) (list %enum %continue)
|
|
(list (@impl make-enumerator (comp object e))
|
|
(-> (lambda '()
|
|
(-> (lambda-case
|
|
`((() #f #f #f () ())
|
|
(-> (if (@impl ->boolean
|
|
(@impl pget
|
|
(-> (lexical '%enum %enum))
|
|
(-> (const 'length))))
|
|
(-> (begin
|
|
(comp `(= ,var (call/this ,(-> (lexical '%enum %enum))
|
|
,(-> (const 'pop))))
|
|
e)
|
|
(comp statement e)
|
|
(-> (call (-> (lexical '%continue %continue))))))
|
|
(@implv *undefined*)))))))))
|
|
(-> (call (-> (lexical '%continue %continue)))))))))
|
|
|
|
((block ,x)
|
|
(comp x e))
|
|
(else
|
|
(error "compilation not yet implemented:" x)))))
|
|
|
|
(define (comp-body e body formals formal-syms)
|
|
(define (process)
|
|
(let lp ((in body) (out '()) (rvars '()))
|
|
(pmatch in
|
|
(((var (,x) . ,morevars) . ,rest)
|
|
(lp `((var . ,morevars) . ,rest)
|
|
out
|
|
(if (or (memq x rvars) (memq x formals))
|
|
rvars
|
|
(cons x rvars))))
|
|
(((var (,x ,y) . ,morevars) . ,rest)
|
|
(lp `((var . ,morevars) . ,rest)
|
|
`((= (ref ,x) ,y) . ,out)
|
|
(if (or (memq x rvars) (memq x formals))
|
|
rvars
|
|
(cons x rvars))))
|
|
(((var) . ,rest)
|
|
(lp rest out rvars))
|
|
((,x . ,rest) (guard (and (pair? x) (eq? (car x) 'lambda)))
|
|
(lp rest
|
|
(cons x out)
|
|
rvars))
|
|
((,x . ,rest) (guard (pair? x))
|
|
(receive (sub-out rvars)
|
|
(lp x '() rvars)
|
|
(lp rest
|
|
(cons sub-out out)
|
|
rvars)))
|
|
((,x . ,rest)
|
|
(lp rest
|
|
(cons x out)
|
|
rvars))
|
|
(()
|
|
(values (reverse! out)
|
|
rvars)))))
|
|
(receive (out rvars)
|
|
(process)
|
|
(let* ((names (reverse rvars))
|
|
(syms (map (lambda (x)
|
|
(gensym (string-append (symbol->string x) " ")))
|
|
names))
|
|
(e (fold econs (fold econs e formals formal-syms) names syms)))
|
|
(-> (let names syms (map (lambda (x) (@implv *undefined*)) names)
|
|
(comp out e))))))
|