ikarus/src/ikarus.code-objects.ss

76 lines
2.4 KiB
Scheme

(library (ikarus code-objects)
(export
make-code code-reloc-vector code-freevars
code-size code-ref code-set! set-code-reloc-vector!
code->thunk)
(import
(ikarus system $fx)
(ikarus system $codes)
(except (ikarus) make-code code-reloc-vector code-freevars
code-size code-ref code-set! set-code-reloc-vector!))
(define make-code
(lambda (code-size freevars)
(unless (and (fixnum? code-size) ($fx>= code-size 0))
(error 'make-code "~s is not a valid code size" code-size))
(unless (and (fixnum? freevars) ($fx>= freevars 0))
(error 'make-code "~s is not a valid number of free vars" freevars))
(foreign-call "ikrt_make_code" code-size freevars '#())))
(define code-reloc-vector
(lambda (x)
(unless (code? x) (error 'code-reloc-vector "~s is not a code" x))
($code-reloc-vector x)))
(define code-freevars
(lambda (x)
(unless (code? x) (error 'code-closure-size "~s is not a code" x))
($code-freevars x)))
(define code-size
(lambda (x)
(unless (code? x) (error 'code-size "~s is not a code" x))
($code-size x)))
(define code-set!
(lambda (x i v)
(unless (code? x) (error 'code-set! "~s is not a code" x))
(unless (and (fixnum? i)
($fx>= i 0)
($fx< i ($code-size x)))
(error 'code-set! "~s is not a valid index" i))
(unless (and (fixnum? v)
($fx>= v 0)
($fx< v 256))
(error 'code-set! "~s is not a valid byte" v))
($code-set! x i v)))
(define code-ref
(lambda (x i)
(unless (code? x) (error 'code-ref "~s is not a code" x))
(unless (and (fixnum? i)
($fx>= i 0)
($fx< i ($code-size x)))
(error 'code-ref "~s is not a valid index" i))
($code-ref x i)))
(define set-code-reloc-vector!
(lambda (x v)
(unless (code? x)
(error 'set-code-reloc-vector! "~s is not a code" x))
(unless (vector? v)
(error 'set-code-reloc-vector! "~s is not a vector" v))
(foreign-call "ikrt_set_code_reloc_vector" x v)))
(define code->thunk
(lambda (x)
(unless (code? x)
(error 'code->thunk "~s is not a a code object" x))
(unless ($fxzero? ($code-freevars x))
(error 'code->thunk "~s has free variables" x))
($code->closure x)))
)