161 lines
6.8 KiB
Scheme
161 lines
6.8 KiB
Scheme
(define pffi-type->native-type
|
|
(lambda (type)
|
|
(cond ((equal? type 'int8) 'int8_t)
|
|
((equal? type 'uint8) 'uint8_t)
|
|
((equal? type 'int16) 'int16_t)
|
|
((equal? type 'uint16) 'uint16_t)
|
|
((equal? type 'int32) 'int32_t)
|
|
((equal? type 'uint32) 'uint32_t)
|
|
((equal? type 'int64) 'int64_t)
|
|
((equal? type 'uint64) 'uint64_t)
|
|
((equal? type 'char) 'char)
|
|
((equal? type 'unsigned-char) 'char)
|
|
((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) 'void*)
|
|
((equal? type 'string) 'string)
|
|
((equal? type 'void) 'void)
|
|
((equal? type 'callback) 'callback)
|
|
((equal? type 'struct) 'void*)
|
|
(else (error "pffi-type->native-type -- No such pffi type" type)))))
|
|
|
|
(define pffi-pointer?
|
|
(lambda (object)
|
|
(or (pointer? object)
|
|
(string? object))))
|
|
|
|
(define-syntax pffi-define
|
|
(syntax-rules ()
|
|
((pffi-define scheme-name shared-object c-name return-type argument-types)
|
|
(define scheme-name
|
|
(make-c-function shared-object
|
|
(pffi-type->native-type return-type)
|
|
c-name
|
|
(map pffi-type->native-type argument-types))))))
|
|
|
|
(define-syntax pffi-define-callback
|
|
(syntax-rules ()
|
|
((_ scheme-name return-type argument-types procedure)
|
|
(define scheme-name
|
|
(make-c-callback (pffi-type->native-type return-type)
|
|
(map pffi-type->native-type argument-types)
|
|
procedure)))))
|
|
|
|
(define pffi-size-of
|
|
(lambda (type)
|
|
(cond ((eq? type 'int8) size-of-int8_t)
|
|
((eq? type 'uint8) size-of-uint8_t)
|
|
((eq? type 'int16) size-of-int16_t)
|
|
((eq? type 'uint16) size-of-uint16_t)
|
|
((eq? type 'int32) size-of-int32_t)
|
|
((eq? type 'uint32) size-of-uint32_t)
|
|
((eq? type 'int64) size-of-int64_t)
|
|
((eq? type 'uint64) size-of-uint64_t)
|
|
((eq? type 'char) size-of-char)
|
|
((eq? type 'unsigned-char) size-of-char)
|
|
((eq? type 'short) size-of-short)
|
|
((eq? type 'unsigned-short) size-of-unsigned-short)
|
|
((eq? type 'int) size-of-int)
|
|
((eq? type 'unsigned-int) size-of-unsigned-int)
|
|
((eq? type 'long) size-of-long)
|
|
((eq? type 'unsigned-long) size-of-unsigned-long)
|
|
((eq? type 'float) size-of-float)
|
|
((eq? type 'double) size-of-double)
|
|
((eq? type 'pointer) size-of-void*)
|
|
(else (error "Can not get size of unknown type" type)))))
|
|
|
|
(define pffi-pointer-allocate
|
|
(lambda (size)
|
|
(c-malloc size)))
|
|
|
|
(define pffi-pointer-address
|
|
(lambda (pointer)
|
|
(address pointer)))
|
|
|
|
(define pffi-struct-dereference
|
|
(lambda (struct)
|
|
(deref (pffi-struct-pointer struct) 0)))
|
|
|
|
(define pffi-pointer-null
|
|
(lambda ()
|
|
(empty-pointer)))
|
|
|
|
(define (string->c-string s)
|
|
(let* ((bv (string->utf8 s))
|
|
(p (allocate-pointer (+ (bytevector-length bv) 1))))
|
|
(do ((i 0 (+ i 1)))
|
|
((= i (bytevector-length bv)) p)
|
|
(pointer-set-c-uint8! p i (bytevector-u8-ref bv i)))
|
|
p))
|
|
|
|
(define pffi-string->pointer
|
|
(lambda (string-content)
|
|
(string->c-string string-content)))
|
|
|
|
(define pffi-pointer->string
|
|
(lambda (pointer)
|
|
(pointer->string pointer)))
|
|
|
|
(define pffi-shared-object-load
|
|
(lambda (headers path . options)
|
|
(open-shared-library path)))
|
|
|
|
(define pffi-pointer-free
|
|
(lambda (pointer)
|
|
(when (pointer? pointer)
|
|
(c-free pointer))))
|
|
|
|
(define pffi-pointer-null?
|
|
(lambda (pointer)
|
|
(null-pointer? pointer)))
|
|
|
|
(define pffi-pointer-set!
|
|
(lambda (pointer type offset value)
|
|
(cond ((equal? type 'int8) (pointer-set-c-int8_t! pointer offset value))
|
|
((equal? type 'uint8) (pointer-set-c-uint8_t! pointer offset value))
|
|
((equal? type 'int16) (pointer-set-c-int16_t! pointer offset value))
|
|
((equal? type 'uint16) (pointer-set-c-uint16_t! pointer offset value))
|
|
((equal? type 'int32) (pointer-set-c-int32_t! pointer offset value))
|
|
((equal? type 'uint32) (pointer-set-c-uint32_t! pointer offset value))
|
|
((equal? type 'int64) (pointer-set-c-int64_t! pointer offset value))
|
|
((equal? type 'uint64) (pointer-set-c-uint64_t! pointer offset value))
|
|
((equal? type 'char) (pointer-set-c-char! pointer offset (char->integer value)))
|
|
((equal? type 'short) (pointer-set-c-short! pointer offset value))
|
|
((equal? type 'unsigned-short) (pointer-set-c-unsigned-short! pointer offset value))
|
|
((equal? type 'int) (pointer-set-c-int! pointer offset value))
|
|
((equal? type 'unsigned-int) (pointer-set-c-unsigned-int! pointer offset value))
|
|
((equal? type 'long) (pointer-set-c-long! pointer offset value))
|
|
((equal? type 'unsigned-long) (pointer-set-c-unsigned-long! pointer offset value))
|
|
((equal? type 'float) (pointer-set-c-float! pointer offset value))
|
|
((equal? type 'double) (pointer-set-c-double! pointer offset value))
|
|
((equal? type 'void) (pointer-set-c-pointer! pointer offset value))
|
|
((equal? type 'pointer) (pointer-set-c-pointer! pointer offset value)))))
|
|
|
|
(define pffi-pointer-get
|
|
(lambda (pointer type offset)
|
|
(cond ((equal? type 'int8) (pointer-ref-c-int8_t pointer offset))
|
|
((equal? type 'uint8) (pointer-ref-c-uint8_t pointer offset))
|
|
((equal? type 'int16) (pointer-ref-c-int16_t pointer offset))
|
|
((equal? type 'uint16) (pointer-ref-c-uint16_t pointer offset))
|
|
((equal? type 'int32) (pointer-ref-c-int32_t pointer offset))
|
|
((equal? type 'uint32) (pointer-ref-c-uint32_t pointer offset))
|
|
((equal? type 'int64) (pointer-ref-c-int64_t pointer offset))
|
|
((equal? type 'uint64) (pointer-ref-c-uint64_t pointer offset))
|
|
((equal? type 'char) (integer->char (pointer-ref-c-char pointer offset)))
|
|
((equal? type 'short) (pointer-ref-c-short pointer offset))
|
|
((equal? type 'unsigned-short) (pointer-ref-c-unsigned-short pointer offset))
|
|
((equal? type 'int) (pointer-ref-c-int pointer offset))
|
|
((equal? type 'unsigned-int) (pointer-ref-c-unsigned-int pointer offset))
|
|
((equal? type 'long) (pointer-ref-c-long pointer offset))
|
|
((equal? type 'unsigned-long) (pointer-ref-c-unsigned-long pointer offset))
|
|
((equal? type 'float) (pointer-ref-c-float pointer offset))
|
|
((equal? type 'double) (pointer-ref-c-double pointer offset))
|
|
((equal? type 'void) (pointer-ref-c-pointer pointer offset))
|
|
((equal? type 'pointer) (pointer-ref-c-pointer pointer offset)))))
|