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;;; GHIL macros
;; Copyright (C) 2001 Free Software Foundation, Inc.
;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 2, or (at your option)
;; any later version.
;;
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;;
;; You should have received a copy of the GNU General Public License
;; along with this program; see the file COPYING. If not, write to
;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.
;;; Code:
(define-module (language tree-il primitives)
#:use-module (system base syntax)
#:use-module (language tree-il)
#:use-module (srfi srfi-16)
#:export (resolve-primitives! add-interesting-primitive!
expand-primitives!))
(define *interesting-primitive-names*
'(apply @apply
call-with-values @call-with-values
call-with-current-continuation @call-with-current-continuation
call/cc
values
eq? eqv? equal?
= < > <= >= zero?
+ * - / 1- 1+ quotient remainder modulo
not
pair? null? list? acons cons cons*
list vector
car cdr
set-car! set-cdr!
caar cadr cdar cddr
caaar caadr cadar caddr cdaar cdadr cddar cdddr
caaaar caaadr caadar caaddr cadaar cadadr caddar cadddr
cdaaar cdaadr cdadar cdaddr cddaar cddadr cdddar cddddr))
(define (add-interesting-primitive! name)
(hashq-set! *interesting-primitive-vars*
(module-variable (current-module) name) name))
(define *interesting-primitive-vars* (make-hash-table))
(for-each add-interesting-primitive! *interesting-primitive-names*)
(define (resolve-primitives! x mod)
(post-order!
(lambda (x)
(record-case x
((<toplevel-ref> src name)
(and=> (hashq-ref *interesting-primitive-vars*
(module-variable mod name))
(lambda (name) (make-primitive-ref src name))))
((<module-ref> src mod name public?)
;; for the moment, we're disabling primitive resolution for
;; public refs because resolve-interface can raise errors.
(let ((m (and (not public?) (resolve-module mod))))
(and m
(and=> (hashq-ref *interesting-primitive-vars*
(module-variable m name))
(lambda (name) (make-primitive-ref src name))))))
(else #f)))
x))
(define *primitive-expand-table* (make-hash-table))
(define (expand-primitives! x)
(pre-order!
(lambda (x)
(record-case x
((<application> src proc args)
(and (primitive-ref? proc)
(let ((expand (hashq-ref *primitive-expand-table*
(primitive-ref-name proc))))
(and expand (apply expand src args)))))
(else #f)))
x))
;;; I actually did spend about 10 minutes trying to redo this with
;;; syntax-rules. Patches appreciated.
;;;
(define-macro (define-primitive-expander sym . clauses)
(define (inline-args args)
(let lp ((in args) (out '()))
(cond ((null? in) `(list ,@(reverse out)))
((symbol? in) `(cons* ,@(reverse out) ,in))
((pair? (car in))
(lp (cdr in)
(cons `(make-application src (make-primitive-ref src ',(caar in))
,(inline-args (cdar in)))
out)))
((symbol? (car in))
;; assume it's locally bound
(lp (cdr in) (cons (car in) out)))
((number? (car in))
(lp (cdr in) (cons `(make-const src ,(car in)) out)))
(else
(error "what what" (car in))))))
(define (consequent exp)
(cond
((pair? exp)
`(make-application src (make-primitive-ref src ',(car exp))
,(inline-args (cdr exp))))
((symbol? exp)
;; assume locally bound
exp)
((number? exp)
`(make-const src ,exp))
(else (error "bad consequent yall" exp))))
`(hashq-set! *primitive-expand-table*
',sym
(case-lambda
,@(let lp ((in clauses) (out '()))
(if (null? in)
(reverse (cons '(else #f) out))
(lp (cddr in)
(cons `((src . ,(car in))
,(consequent (cadr in))) out)))))))
(define-primitive-expander +
() 0
(x) x
(x y z . rest) (+ x (+ y z . rest)))
(define-primitive-expander *
() 1
(x) x
(x y z . rest) (* x (* y z . rest)))
(define-primitive-expander -
(x) (- 0 x)
(x y z . rest) (- x (+ y z . rest)))
(define-primitive-expander 1-
(x) (- x 1))
(define-primitive-expander /
(x) (/ 1 x)
(x y z . rest) (/ x (* y z . rest)))
(define-primitive-expander caar (x) (car (car x)))
(define-primitive-expander cadr (x) (car (cdr x)))
(define-primitive-expander cdar (x) (cdr (car x)))
(define-primitive-expander cddr (x) (cdr (cdr x)))
(define-primitive-expander caaar (x) (car (car (car x))))
(define-primitive-expander caadr (x) (car (car (cdr x))))
(define-primitive-expander cadar (x) (car (cdr (car x))))
(define-primitive-expander caddr (x) (car (cdr (cdr x))))
(define-primitive-expander cdaar (x) (cdr (car (car x))))
(define-primitive-expander cdadr (x) (cdr (car (cdr x))))
(define-primitive-expander cddar (x) (cdr (cdr (car x))))
(define-primitive-expander cdddr (x) (cdr (cdr (cdr x))))
(define-primitive-expander caaaar (x) (car (car (car (car x)))))
(define-primitive-expander caaadr (x) (car (car (car (cdr x)))))
(define-primitive-expander caadar (x) (car (car (cdr (car x)))))
(define-primitive-expander caaddr (x) (car (car (cdr (cdr x)))))
(define-primitive-expander cadaar (x) (car (cdr (car (car x)))))
(define-primitive-expander cadadr (x) (car (cdr (car (cdr x)))))
(define-primitive-expander caddar (x) (car (cdr (cdr (car x)))))
(define-primitive-expander cadddr (x) (car (cdr (cdr (cdr x)))))
(define-primitive-expander cdaaar (x) (cdr (car (car (car x)))))
(define-primitive-expander cdaadr (x) (cdr (car (car (cdr x)))))
(define-primitive-expander cdadar (x) (cdr (car (cdr (car x)))))
(define-primitive-expander cdaddr (x) (cdr (car (cdr (cdr x)))))
(define-primitive-expander cddaar (x) (cdr (cdr (car (car x)))))
(define-primitive-expander cddadr (x) (cdr (cdr (car (cdr x)))))
(define-primitive-expander cdddar (x) (cdr (cdr (cdr (car x)))))
(define-primitive-expander cddddr (x) (cdr (cdr (cdr (cdr x)))))
(define-primitive-expander cons*
(x) x
(x y) (cons x y)
(x y . rest) (cons x (cons* y . rest)))
(define-primitive-expander acons (x y z)
(cons (cons x y) z))
(define-primitive-expander apply (f . args)
(@apply f . args))
(define-primitive-expander call-with-values (producer consumer)
(@call-with-values producer consumer))
(define-primitive-expander call-with-current-continuation (proc)
(@call-with-current-continuation proc))
(define-primitive-expander call/cc (proc)
(@call-with-current-continuation proc))
(define-primitive-expander values (x) x)
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