106 lines
3.0 KiB
Scheme
106 lines
3.0 KiB
Scheme
(define-library
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(retropikzel pffi v0-2-2 stklos)
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(import (scheme base)
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(scheme write)
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(scheme file)
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(scheme process-context)
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(stklos))
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(export pffi-define
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pffi-pointer->string
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pffi-pointer-allocate
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pffi-pointer-deref
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pffi-pointer-free
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pffi-pointer-get
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pffi-pointer-null
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pffi-pointer-null?
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pffi-pointer-set!
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pffi-pointer?
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pffi-shared-object-load
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pffi-size-of
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pffi-string->pointer)
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(begin
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(define pffi-type->native-type
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(lambda (type)
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(cond ((equal? type 'int8) :int)
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((equal? type 'uint8) :uint)
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((equal? type 'int16) :int)
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((equal? type 'uint16) :uint)
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((equal? type 'int32) :int)
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((equal? type 'uint32) :uint)
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((equal? type 'int64) :int)
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((equal? type 'uint64) :uint)
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((equal? type 'char) :char)
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((equal? type 'unsigned-char) :uchar)
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((equal? type 'short) :short)
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((equal? type 'unsigned-short) :ushort)
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((equal? type 'int) :int)
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((equal? type 'unsigned-int) :uint)
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((equal? type 'long) :long)
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((equal? type 'unsigned-long) :ulong)
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((equal? type 'float) :float)
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((equal? type 'double) :double)
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((equal? type 'pointer) :pointer)
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((equal? type 'string) :string)
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((equal? type 'void) :void)
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(else (error "pffi-type->native-type -- No such pffi type" type)))))
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(define pffi-pointer?
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(lambda (object)
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(cpointer? object)))
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(define-syntax pffi-define
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(syntax-rules ()
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((pffi-define scheme-name shared-object c-name return-type argument-types)
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(define scheme-name
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(make-external-function
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(symbol->string c-name)
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(map pffi-type->native-type argument-types)
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(pffi-type->native-type return-type)
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shared-object)))))
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(define pffi-size-of
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(lambda (type)
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(error "Not implemented")))
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(define pffi-pointer-allocate
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(lambda (size)
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(allocate-bytes size)))
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(define pffi-pointer-null
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(lambda ()
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(let ((p (allocate-bytes 0))) (cpointer-data-set! p 0) p)))
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(define pffi-string->pointer
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(lambda (string-content)
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string-content))
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(define pffi-pointer->string
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(lambda (pointer)
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pointer))
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(define pffi-shared-object-load
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(lambda (header path)
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path))
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(define pffi-pointer-free
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(lambda (pointer)
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(free-bytes pointer)))
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(define pffi-pointer-null?
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(lambda (pointer)
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(cpointer-null? pointer)))
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(define pffi-pointer-set!
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(lambda (pointer type offset value)
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(error "Not implemented")))
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(define pffi-pointer-get
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(lambda (pointer type offset)
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(error "Not implemented")))
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(define pffi-pointer-deref
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(lambda (pointer)
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(error "Not implemented")))))
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