126 lines
5.5 KiB
Scheme
126 lines
5.5 KiB
Scheme
(define size-of-type
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(lambda (type)
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(cond ((eq? type 'int8) (c-sizeof int8_t))
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((eq? type 'uint8) (c-sizeof uint8_t))
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((eq? type 'int16) (c-sizeof int16_t))
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((eq? type 'uint16) (c-sizeof uint16_t))
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((eq? type 'int32) (c-sizeof int32_t))
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((eq? type 'uint32) (c-sizeof uint32_t))
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((eq? type 'int64) (c-sizeof int64_t))
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((eq? type 'uint64) (c-sizeof uint64_t))
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((eq? type 'char) (c-sizeof char))
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((eq? type 'unsigned-char) (c-sizeof char))
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((eq? type 'short) (c-sizeof short))
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((eq? type 'unsigned-short) (c-sizeof unsigned-short))
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((eq? type 'int) (c-sizeof int))
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((eq? type 'unsigned-int) (c-sizeof unsigned-int))
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((eq? type 'long) (c-sizeof long))
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((eq? type 'unsigned-long) (c-sizeof unsigned-long))
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((eq? type 'float) (c-sizeof float))
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((eq? type 'double) (c-sizeof double))
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((eq? type 'pointer) (c-sizeof void*))
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((eq? type 'struct) (c-sizeof void*))
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((eq? type 'callback) (c-sizeof void*))
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((eq? type 'void) 0)
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(else #f))))
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(define c-bytevector?
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(lambda (object)
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(number? object)))
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(define c-bytevector-u8-set!
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(lambda (c-bytevector k byte)
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;; Ypsilon for some reason does not have bytevector-c-uint8-set!
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;; or other bytevector-c-u*-set! procedures so we use
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;; bytevector-c-int8-set!
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(bytevector-c-int8-set! (make-bytevector-mapping (+ c-bytevector k)
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(c-type-size 'uint8))
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0
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byte)))
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(define c-bytevector-u8-ref
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(lambda (c-bytevector k)
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(bytevector-c-uint8-ref (make-bytevector-mapping (+ c-bytevector k)
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(c-type-size 'uint8))
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0)))
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(define c-bytevector-pointer-set!
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(lambda (c-bytevector k pointer)
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(bytevector-c-void*-set! (make-bytevector-mapping (+ c-bytevector k)
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(c-type-size 'pointer))
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0
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pointer)))
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(define c-bytevector-pointer-ref
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(lambda (c-bytevector k)
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(bytevector-c-void*-ref (make-bytevector-mapping (+ c-bytevector k)
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(c-type-size 'pointer))
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0)))
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(define shared-object-load
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(lambda (path options)
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(load-shared-object path)))
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(define-macro
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(define-c-procedure scheme-name shared-object c-name return-type argument-types)
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(begin
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(let ((type->native-type
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(lambda (type)
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(cond ((equal? type 'int8) 'int8_t)
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((equal? type 'uint8) 'uint8_t)
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((equal? type 'int16) 'int16_t)
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((equal? type 'uint16) 'uint16_t)
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((equal? type 'int32) 'int32_t)
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((equal? type 'uint32) 'uint32_t)
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((equal? type 'int64) 'int64_t)
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((equal? type 'uint64) 'uint64_t)
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((equal? type 'char) 'char)
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((equal? type 'unsigned-char) 'char)
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((equal? type 'short) 'short)
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((equal? type 'unsigned-short) 'unsigned-short)
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((equal? type 'int) 'int)
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((equal? type 'unsigned-int) 'unsigned-int)
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((equal? type 'long) 'long)
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((equal? type 'unsigned-long) 'unsigned-long)
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((equal? type 'float) 'float)
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((equal? type 'double) 'double)
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((equal? type 'pointer) 'void*)
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((equal? type 'void) 'void)
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((equal? type 'callback) 'void*)
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(else (error "type->native-type -- No such type" type))))))
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`(define ,scheme-name
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(c-function ,(type->native-type (cadr return-type))
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,(cadr c-name)
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,(map type->native-type (cadr argument-types)))))))
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(define-macro
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(define-c-callback scheme-name return-type argument-types procedure)
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(let* ((type->native-type
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(lambda (type)
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(cond ((equal? type 'int8) 'int8_t)
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((equal? type 'uint8) 'uint8_t)
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((equal? type 'int16) 'int16_t)
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((equal? type 'uint16) 'uint16_t)
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((equal? type 'int32) 'int32_t)
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((equal? type 'uint32) 'uint32_t)
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((equal? type 'int64) 'int64_t)
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((equal? type 'uint64) 'uint64_t)
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((equal? type 'char) 'char)
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((equal? type 'unsigned-char) 'char)
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((equal? type 'short) 'short)
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((equal? type 'unsigned-short) 'unsigned-short)
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((equal? type 'int) 'int)
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((equal? type 'unsigned-int) 'unsigned-int)
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((equal? type 'long) 'long)
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((equal? type 'unsigned-long) 'unsigned-long)
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((equal? type 'float) 'float)
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((equal? type 'double) 'double)
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((equal? type 'pointer) 'void*)
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((equal? type 'void) 'void)
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((equal? type 'callback) 'void*)
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(else (error "type->native-type -- No such type" type)))))
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(native-return-type (type->native-type (cadr return-type)))
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(native-argument-types (map type->native-type (cadr argument-types))))
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`(define ,scheme-name
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(c-callback ,native-return-type ,native-argument-types ,procedure))))
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