mirror of
https://git.savannah.gnu.org/git/guile.git
synced 2025-04-30 20:00:19 +02:00
19113f1ca7
* module/ice-9/psyntax-pp.scm:
* module/ice-9/psyntax.scm (case-lambda, case-lambda*): Allow 0
clauses.
* module/language/scheme/decompile-tree-il.scm (do-decompile):
(choose-output-names):
* module/language/tree-il.scm (unparse-tree-il):
(tree-il-fold, post-order!, pre-order!):
* module/language/tree-il/effects.scm (make-effects-analyzer):
* module/language/tree-il/cse.scm (cse):
* module/language/tree-il/debug.scm (verify-tree-il):
* module/language/tree-il/peval.scm (peval): Allow for lambda-body to be
#f.
* libguile/memoize.c (memoize):
* module/language/tree-il/canonicalize.scm (canonicalize!): Give a body
to empty case-lambda before evaluating it or compiling it,
respectively.
* test-suite/tests/optargs.test ("case-lambda", "case-lambda*"): Add
tests.
262 lines
9.9 KiB
Scheme
262 lines
9.9 KiB
Scheme
;;; Tree-IL verifier
|
|
|
|
;; Copyright (C) 2011, 2013 Free Software Foundation, Inc.
|
|
|
|
;;;; This library is free software; you can redistribute it and/or
|
|
;;;; modify it under the terms of the GNU Lesser General Public
|
|
;;;; License as published by the Free Software Foundation; either
|
|
;;;; version 3 of the License, or (at your option) any later version.
|
|
;;;;
|
|
;;;; This library 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
|
|
;;;; Lesser General Public License for more details.
|
|
;;;;
|
|
;;;; You should have received a copy of the GNU Lesser General Public
|
|
;;;; License along with this library; if not, write to the Free Software
|
|
;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
|
|
(define-module (language tree-il debug)
|
|
#:use-module (language tree-il)
|
|
#:use-module (ice-9 match)
|
|
#:use-module (srfi srfi-1)
|
|
#:use-module (srfi srfi-26)
|
|
#:export (verify-tree-il))
|
|
|
|
(define (verify-tree-il exp)
|
|
(define seen-gensyms (make-hash-table))
|
|
(define (add sym env)
|
|
(if (hashq-ref seen-gensyms sym)
|
|
(error "duplicate gensym" sym)
|
|
(begin
|
|
(hashq-set! seen-gensyms sym #t)
|
|
(cons sym env))))
|
|
(define (add-env new env)
|
|
(if (null? new)
|
|
env
|
|
(add-env (cdr new) (add (car new) env))))
|
|
|
|
(let visit ((exp exp)
|
|
(env '()))
|
|
(match exp
|
|
(($ <lambda-case> src req opt rest kw inits gensyms body alt)
|
|
(cond
|
|
((not (and (list? req) (and-map symbol? req)))
|
|
(error "bad required args (should be list of symbols)" exp))
|
|
((and opt (not (and (list? opt) (and-map symbol? opt))))
|
|
(error "bad optionals (should be #f or list of symbols)" exp))
|
|
((and rest (not (symbol? rest)))
|
|
(error "bad required args (should be #f or symbol)" exp))
|
|
((and kw (not (match kw
|
|
((aok . kwlist)
|
|
(and (list? kwlist)
|
|
(and-map
|
|
(lambda (x)
|
|
(match x
|
|
(((? keyword?) (? symbol?) (? symbol? sym))
|
|
(memq sym gensyms))
|
|
(_ #f)))
|
|
kwlist)))
|
|
(_ #f))))
|
|
(error "bad keywords (should be #f or (aok (kw name sym) ...))" exp))
|
|
((not (and (list? gensyms) (and-map symbol? gensyms)))
|
|
(error "bad gensyms (should be list of symbols)" exp))
|
|
((not (and (list? gensyms) (and-map symbol? gensyms)))
|
|
(error "bad gensyms (should be list of symbols)" exp))
|
|
((not (= (length gensyms)
|
|
(+ (length req)
|
|
(if opt (length opt) 0)
|
|
;; FIXME: technically possible for kw gensyms to
|
|
;; alias other gensyms
|
|
(if rest 1 0)
|
|
(if kw (1- (length kw)) 0))))
|
|
(error "unexpected gensyms length" exp))
|
|
(else
|
|
(let lp ((env (add-env (take gensyms (length req)) env))
|
|
(nopt (if opt (length opt) 0))
|
|
(inits inits)
|
|
(tail (drop gensyms (length req))))
|
|
(if (zero? nopt)
|
|
(let lp ((env (if rest (add (car tail) env) env))
|
|
(inits inits)
|
|
(tail (if rest (cdr tail) tail)))
|
|
(if (pair? inits)
|
|
(begin
|
|
(visit (car inits) env)
|
|
(lp (add (car tail) env) (cdr inits)
|
|
(cdr tail)))
|
|
(visit body env)))
|
|
(begin
|
|
(visit (car inits) env)
|
|
(lp (add (car tail) env)
|
|
(1- nopt)
|
|
(cdr inits)
|
|
(cdr tail)))))
|
|
(if alt (visit alt env)))))
|
|
(($ <lexical-ref> src name gensym)
|
|
(cond
|
|
((not (symbol? name))
|
|
(error "name should be a symbol" name))
|
|
((not (hashq-ref seen-gensyms gensym))
|
|
(error "unbound lexical" exp))
|
|
((not (memq gensym env))
|
|
(error "displaced lexical" exp))))
|
|
(($ <lexical-set> src name gensym exp)
|
|
(cond
|
|
((not (symbol? name))
|
|
(error "name should be a symbol" name))
|
|
((not (hashq-ref seen-gensyms gensym))
|
|
(error "unbound lexical" exp))
|
|
((not (memq gensym env))
|
|
(error "displaced lexical" exp))
|
|
(else
|
|
(visit exp env))))
|
|
(($ <lambda> src meta body)
|
|
(cond
|
|
((and meta (not (and (list? meta) (and-map pair? meta))))
|
|
(error "meta should be alist" meta))
|
|
((and body (not (lambda-case? body)))
|
|
(error "lambda body should be lambda-case" exp))
|
|
(else
|
|
(if body
|
|
(visit body env)))))
|
|
(($ <let> src names gensyms vals body)
|
|
(cond
|
|
((not (and (list? names) (and-map symbol? names)))
|
|
(error "names should be list of syms" exp))
|
|
((not (and (list? gensyms) (and-map symbol? gensyms)))
|
|
(error "gensyms should be list of syms" exp))
|
|
((not (list? vals))
|
|
(error "vals should be list" exp))
|
|
((not (= (length names) (length gensyms) (length vals)))
|
|
(error "names, syms, vals should be same length" exp))
|
|
(else
|
|
(for-each (cut visit <> env) vals)
|
|
(visit body (add-env gensyms env)))))
|
|
(($ <letrec> src in-order? names gensyms vals body)
|
|
(cond
|
|
((not (and (list? names) (and-map symbol? names)))
|
|
(error "names should be list of syms" exp))
|
|
((not (and (list? gensyms) (and-map symbol? gensyms)))
|
|
(error "gensyms should be list of syms" exp))
|
|
((not (list? vals))
|
|
(error "vals should be list" exp))
|
|
((not (= (length names) (length gensyms) (length vals)))
|
|
(error "names, syms, vals should be same length" exp))
|
|
(else
|
|
(let ((env (add-env gensyms env)))
|
|
(for-each (cut visit <> env) vals)
|
|
(visit body env)))))
|
|
(($ <fix> src names gensyms vals body)
|
|
(cond
|
|
((not (and (list? names) (and-map symbol? names)))
|
|
(error "names should be list of syms" exp))
|
|
((not (and (list? gensyms) (and-map symbol? gensyms)))
|
|
(error "gensyms should be list of syms" exp))
|
|
((not (list? vals))
|
|
(error "vals should be list" exp))
|
|
((not (= (length names) (length gensyms) (length vals)))
|
|
(error "names, syms, vals should be same length" exp))
|
|
(else
|
|
(let ((env (add-env gensyms env)))
|
|
(for-each (cut visit <> env) vals)
|
|
(visit body env)))))
|
|
(($ <let-values> src exp body)
|
|
(cond
|
|
((not (lambda-case? body))
|
|
(error "let-values body should be lambda-case" exp))
|
|
(else
|
|
(visit exp env)
|
|
(visit body env))))
|
|
(($ <const> src val) #t)
|
|
(($ <void> src) #t)
|
|
(($ <toplevel-ref> src name)
|
|
(cond
|
|
((not (symbol? name))
|
|
(error "name should be a symbol" name))))
|
|
(($ <module-ref> src mod name public?)
|
|
(cond
|
|
((not (and (list? mod) (and-map symbol? mod)))
|
|
(error "module name should be list of symbols" exp))
|
|
((not (symbol? name))
|
|
(error "name should be symbol" exp))))
|
|
(($ <primitive-ref> src name)
|
|
(cond
|
|
((not (symbol? name))
|
|
(error "name should be symbol" exp))))
|
|
(($ <toplevel-set> src name exp)
|
|
(cond
|
|
((not (symbol? name))
|
|
(error "name should be a symbol" name))
|
|
(else
|
|
(visit exp env))))
|
|
(($ <toplevel-define> src name exp)
|
|
(cond
|
|
((not (symbol? name))
|
|
(error "name should be a symbol" name))
|
|
(else
|
|
(visit exp env))))
|
|
(($ <module-set> src mod name public? exp)
|
|
(cond
|
|
((not (and (list? mod) (and-map symbol? mod)))
|
|
(error "module name should be list of symbols" exp))
|
|
((not (symbol? name))
|
|
(error "name should be symbol" exp))
|
|
(else
|
|
(visit exp env))))
|
|
(($ <dynlet> src fluids vals body)
|
|
(cond
|
|
((not (list? fluids))
|
|
(error "fluids should be list" exp))
|
|
((not (list? vals))
|
|
(error "vals should be list" exp))
|
|
((not (= (length fluids) (length vals)))
|
|
(error "mismatch in fluids/vals" exp))
|
|
(else
|
|
(for-each (cut visit <> env) fluids)
|
|
(for-each (cut visit <> env) vals)
|
|
(visit body env))))
|
|
(($ <dynwind> src winder body unwinder)
|
|
(visit winder env)
|
|
(visit body env)
|
|
(visit unwinder env))
|
|
(($ <dynref> src fluid)
|
|
(visit fluid env))
|
|
(($ <dynset> src fluid exp)
|
|
(visit fluid env)
|
|
(visit exp env))
|
|
(($ <conditional> src condition subsequent alternate)
|
|
(visit condition env)
|
|
(visit subsequent env)
|
|
(visit alternate env))
|
|
(($ <application> src proc args)
|
|
(cond
|
|
((not (list? args))
|
|
(error "expected list of args" args))
|
|
(else
|
|
(visit proc env)
|
|
(for-each (cut visit <> env) args))))
|
|
(($ <sequence> src exps)
|
|
(cond
|
|
((not (list? exps))
|
|
(error "expected list of exps" exp))
|
|
((null? exps)
|
|
(error "expected more than one exp" exp))
|
|
(else
|
|
(for-each (cut visit <> env) exps))))
|
|
(($ <prompt> src tag body handler)
|
|
(visit tag env)
|
|
(visit body env)
|
|
(visit handler env))
|
|
(($ <abort> src tag args tail)
|
|
(visit tag env)
|
|
(for-each (cut visit <> env) args)
|
|
(visit tail env))
|
|
(_
|
|
(error "unexpected tree-il" exp)))
|
|
(let ((src (tree-il-src exp)))
|
|
(if (and src (not (and (list? src) (and-map pair? src)
|
|
(and-map symbol? (map car src)))))
|
|
(error "bad src"))
|
|
;; Return it, why not.
|
|
exp)))
|