129 lines
6.3 KiB
Scheme
129 lines
6.3 KiB
Scheme
(define pffi-type->native-type
|
|
(lambda (type)
|
|
(cond ((equal? type 'int8) int8)
|
|
((equal? type 'uint8) uint8)
|
|
((equal? type 'int16) int16)
|
|
((equal? type 'uint16) uint16)
|
|
((equal? type 'int32) int32)
|
|
((equal? type 'uint32) uint32)
|
|
((equal? type 'int64) int64)
|
|
((equal? type 'uint64) uint64)
|
|
((equal? type 'char) int8)
|
|
((equal? type 'unsigned-char) uint8)
|
|
((equal? type 'short) short)
|
|
((equal? type 'unsigned-short) unsigned-short)
|
|
((equal? type 'int) int)
|
|
((equal? type 'unsigned-int) unsigned-int)
|
|
((equal? type 'long) long)
|
|
((equal? type 'unsigned-long) unsigned-long)
|
|
((equal? type 'float) float)
|
|
((equal? type 'double) double)
|
|
((equal? type 'pointer) '*)
|
|
((equal? type 'void) void)
|
|
((equal? type 'callback) '*)
|
|
(else (error "pffi-type->native-type -- No such pffi type" type)))))
|
|
|
|
(define pffi-pointer?
|
|
(lambda (object)
|
|
(pointer? object)))
|
|
|
|
(define-syntax pffi-define
|
|
(syntax-rules ()
|
|
((pffi-define scheme-name shared-object c-name return-type argument-types)
|
|
(define scheme-name
|
|
(foreign-library-function shared-object
|
|
(symbol->string c-name)
|
|
#:return-type (pffi-type->native-type return-type)
|
|
#:arg-types (map pffi-type->native-type argument-types))))))
|
|
|
|
(define-syntax pffi-define-callback
|
|
(syntax-rules ()
|
|
((pffi-define-callback scheme-name return-type argument-types procedure)
|
|
(define scheme-name
|
|
(procedure->pointer (pffi-type->native-type return-type)
|
|
procedure
|
|
(map pffi-type->native-type argument-types))))))
|
|
|
|
(define pffi-size-of
|
|
(lambda (type)
|
|
(sizeof (pffi-type->native-type type))))
|
|
|
|
(define pffi-pointer-allocate
|
|
(lambda (size)
|
|
(bytevector->pointer (make-bytevector size 0))))
|
|
|
|
(define pffi-pointer-null
|
|
(lambda ()
|
|
(make-pointer 0)))
|
|
|
|
(define pffi-string->pointer
|
|
(lambda (string-content)
|
|
(string->pointer string-content)))
|
|
|
|
(define pffi-pointer->string
|
|
(lambda (pointer)
|
|
(pointer->string pointer)))
|
|
|
|
(define pffi-shared-object-load
|
|
(lambda (header path)
|
|
(load-foreign-library path)))
|
|
|
|
(define pffi-pointer-free
|
|
(lambda (pointer)
|
|
#t))
|
|
|
|
(define pffi-pointer-null?
|
|
(lambda (pointer)
|
|
(and (pffi-pointer? pointer)
|
|
(null-pointer? pointer))))
|
|
|
|
(define pffi-pointer-set!
|
|
(lambda (pointer type offset value)
|
|
(let ((p (pointer->bytevector pointer (+ offset 100))))
|
|
(cond ((equal? type 'int8) (bytevector-s8-set! p offset value))
|
|
((equal? type 'uint8) (bytevector-u8-set! p offset value))
|
|
((equal? type 'int16) (bytevector-s16-set! p offset value (native-endianness)))
|
|
((equal? type 'uint16) (bytevector-u16-set! p offset value (native-endianness)))
|
|
((equal? type 'int32) (bytevector-s32-set! p offset value (native-endianness)))
|
|
((equal? type 'uint32) (bytevector-u32-set! p offset value (native-endianness)))
|
|
((equal? type 'int64) (bytevector-s64-set! p offset value (native-endianness)))
|
|
((equal? type 'uint64) (bytevector-u64-set! p offset value (native-endianness)))
|
|
((equal? type 'char) (bytevector-s8-set! p offset (char->integer value)))
|
|
((equal? type 'short) (bytevector-s8-set! p offset value))
|
|
((equal? type 'unsigned-short) (bytevector-u8-set! p offset value))
|
|
((equal? type 'int) (bytevector-sint-set! p offset value (native-endianness) (pffi-size-of type)))
|
|
((equal? type 'unsigned-int) (bytevector-uint-set! p offset value (native-endianness) (pffi-size-of type)))
|
|
((equal? type 'long) (bytevector-s64-set! p offset value (native-endianness)))
|
|
((equal? type 'unsigned-long) (bytevector-u64-set! p offset value (native-endianness)))
|
|
((equal? type 'float) (bytevector-ieee-single-set! p offset value (native-endianness)))
|
|
((equal? type 'double) (bytevector-ieee-double-set! p offset value (native-endianness)))
|
|
((equal? type 'pointer) (bytevector-sint-set! p offset (pointer-address value) (native-endianness) (pffi-size-of type)))
|
|
((equal? type 'string) (bytevector-sint-set! p offset (pointer-address (pffi-string->pointer value)) (native-endianness) (pffi-size-of type)))))))
|
|
|
|
(define pffi-pointer-get
|
|
(lambda (pointer type offset)
|
|
(let ((p (pointer->bytevector pointer (+ offset 100))))
|
|
(cond ((equal? type 'int8) (bytevector-s8-ref p offset))
|
|
((equal? type 'uint8) (bytevector-u8-ref p offset))
|
|
((equal? type 'int16) (bytevector-s16-ref p offset (native-endianness)))
|
|
((equal? type 'uint16) (bytevector-u16-ref p offset (native-endianness)))
|
|
((equal? type 'int32) (bytevector-s32-ref p offset (native-endianness)))
|
|
((equal? type 'uint32) (bytevector-u32-ref p offset (native-endianness)))
|
|
((equal? type 'int64) (bytevector-s64-ref p offset (native-endianness)))
|
|
((equal? type 'uint64) (bytevector-u64-ref p offset (native-endianness)))
|
|
((equal? type 'char) (integer->char (bytevector-s8-ref p offset)))
|
|
((equal? type 'short) (bytevector-s8-ref p offset))
|
|
((equal? type 'unsigned-short) (bytevector-u8-ref p offset))
|
|
((equal? type 'int) (bytevector-sint-ref p offset (native-endianness) (pffi-size-of type)))
|
|
((equal? type 'unsigned-int) (bytevector-uint-ref p offset (native-endianness) (pffi-size-of type)))
|
|
((equal? type 'long) (bytevector-s64-ref p offset (native-endianness)))
|
|
((equal? type 'unsigned-long) (bytevector-u64-ref p offset (native-endianness)))
|
|
((equal? type 'float) (bytevector-ieee-single-ref p offset (native-endianness)))
|
|
((equal? type 'double) (bytevector-ieee-double-ref p offset (native-endianness)))
|
|
((equal? type 'pointer) (make-pointer (bytevector-sint-ref p offset (native-endianness) (pffi-size-of type))))
|
|
((equal? type 'string) (pffi-pointer->string (make-pointer (bytevector-sint-ref p offset (native-endianness) (pffi-size-of type)))))))))
|
|
|
|
(define pffi-pointer-cast->struct
|
|
(lambda (struct-name pointer)
|
|
pointer))
|