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Fix some srfi-105 parsing errors

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* module/ice-9/read.scm (%read): Fix parsing errors.
This commit is contained in:
Andy Wingo 2021-03-03 22:56:58 +01:00
parent 94279414a8
commit ea86a5c6d2
1 changed files with 8 additions and 7 deletions
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15
module/ice-9/read.scm
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@ -190,17 +190,18 @@
(and (pair? ls) (and (pair? ls)
(let ((op (car ls)) (let ((op (car ls))
(ls (cdr ls))) (ls (cdr ls)))
(if (null? ls) (if (and (pair? ls) (null? (cdr ls)))
(list op x) (cons* op x ls)
(let ((tail (extract-infix-list ls))) (let ((tail (extract-infix-list ls)))
(and tail (and tail
(equal? op (car tail)) (equal? (strip-annotation op)
(strip-annotation (car tail)))
(cons* op x (cdr tail)))))))))) (cons* op x (cdr tail))))))))))
(cond (cond
((or (not (eqv? rdelim #\}))) ret) ; Only on {...} lists. ((not (eqv? rdelim #\})) ret) ; Only on {...} lists.
((null? ret) ret) ; {} => () ((not (pair? ret)) ret) ; {} => ()
((null? (cdr ret)) (car ret)) ; {x} => x ((not (pair? (cdr ret))) (car ret)); {x} => x
((null? (cddr ret)) ret) ; {x y} => (x y) ((not (pair? (cddr ret))) ret) ; {x y} => (x y)
((extract-infix-list ret)) ; {x + y + ... + z} => (+ x y ... z) ((extract-infix-list ret)) ; {x + y + ... + z} => (+ x y ... z)
(else (cons '$nfx$ ret)))) ; {x y . z} => ($nfx$ x y . z) (else (cons '$nfx$ ret)))) ; {x y . z} => ($nfx$ x y . z)
(define curly? (eqv? rdelim #\})) (define curly? (eqv? rdelim #\}))