60 lines
1.7 KiB
Scheme
60 lines
1.7 KiB
Scheme
(require 'std-ffi)
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(require 'ffi-load)
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;; FIXME
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(define size-of-type
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(lambda (type)
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(cond ((eq? type 'int8) 1)
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((eq? type 'uint8) 1)
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((eq? type 'int16) 2)
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((eq? type 'uint16) 2)
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((eq? type 'int32) 4)
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((eq? type 'uint32) 4)
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((eq? type 'int64) 8)
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((eq? type 'uint64) 8)
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((eq? type 'char) 1)
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((eq? type 'unsigned-char) 1)
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((eq? type 'short) 2)
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((eq? type 'unsigned-short) 2)
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((eq? type 'int) 4)
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((eq? type 'unsigned-int) 4)
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((eq? type 'long) 4)
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((eq? type 'unsigned-long) 4)
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((eq? type 'float) 4)
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((eq? type 'double) 8)
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((eq? type 'pointer) sizeof:pointer)
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((eq? type 'void) 0)
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((eq? type 'callback) sizeof:pointer)
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(else (error "Can not get size of unknown type" type)))))
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(define c-bytevector?
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(lambda (object)
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;(void*? object)
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(number? object)))
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(define pffi-shared-object-load
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(lambda (headers path . options)
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(foreign-file path)))
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(define c-bytevector-u8-ref
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(lambda (c-bytevector k)
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(peek-bytes c-bytevector k (c-size-of 'uint8))))
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(define-syntax define-c-procedure
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(syntax-rules ()
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((_ scheme-name shared-object c-name return-type argument-types)
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(define scheme-name
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0
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#;(make-c-function shared-object
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(symbol->string c-name)
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return-type
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argument-types)))))
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(define-syntax pffi-define-callback
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(syntax-rules ()
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((_ scheme-name return-type argument-types procedure)
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(define scheme-name
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0
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#;(make-c-callback return-type argument-types procedure)))))
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