ikarus/src/ikarus.load.ss

50 lines
1.5 KiB
Scheme

(library (ikarus load)
(export load load-r6rs-top-level)
(import
(except (ikarus) load)
(only (ikarus syntax) eval-top-level eval-r6rs-top-level)
(only (ikarus reader) read-initial))
(define load-handler
(lambda (x)
(eval-top-level x)))
(define read-and-eval
(lambda (p eval-proc)
(let ([x (read p)])
(unless (eof-object? x)
(eval-proc x)
(read-and-eval p eval-proc)))))
(define load
(case-lambda
[(x) (load x load-handler)]
[(x eval-proc)
(unless (string? x)
(error 'load "~s is not a string" x))
(unless (procedure? eval-proc)
(error 'load "~s is not a procedure" eval-proc))
(let ([p (open-input-file x)])
(let ([x (read-initial p)])
(unless (eof-object? x)
(eval-proc x)
(read-and-eval p eval-proc)))
(close-input-port p))]))
(define load-r6rs-top-level
(lambda (x)
(define (read-file)
(let ([p (open-input-file x)])
(let ([x (read-initial p)])
(if (eof-object? x)
(begin (close-input-port p) '())
(cons x
(let f ()
(let ([x (read p)])
(cond
[(eof-object? x)
(close-input-port p)
'()]
[else (cons x (f))]))))))))
(let ([prog (read-file)])
(eval-r6rs-top-level prog))))
)