255 lines
12 KiB
Scheme
255 lines
12 KiB
Scheme
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(define pffi-type->native-type ; Chicken has this procedure in three places
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(lambda (type)
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(cond ((equal? type 'int8) 'byte)
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((equal? type 'uint8) 'unsigned-byte)
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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)
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((equal? type 'uint32) 'unsigned-int32)
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((equal? type 'int64) 'integer-64)
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((equal? type 'uint64) 'unsigned-integer64)
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((equal? type 'char) 'char)
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((equal? type 'unsigned-char) 'unsigned-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) 'c-pointer)
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((equal? type 'void) 'void)
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((equal? type 'callback) 'c-pointer)
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((equal? type 'struct) 'c-pointer)
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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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(pointer? object)))
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(define-syntax pffi-define
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(er-macro-transformer
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(lambda (expr rename compare)
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(let* ((pffi-type->native-type ; Chicken has this procedure in three places
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(lambda (type)
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(cond ((equal? type 'int8) 'byte)
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((equal? type 'uint8) 'unsigned-byte)
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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)
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((equal? type 'uint32) 'unsigned-int32)
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((equal? type 'int64) 'integer-64)
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((equal? type 'uint64) 'unsigned-integer64)
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((equal? type 'char) 'char)
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((equal? type 'unsigned-char) 'unsigned-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) 'c-pointer)
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((equal? type 'void) 'void)
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((equal? type 'callback) 'c-pointer)
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((equal? type 'struct) 'c-pointer)
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(else (error "pffi-type->native-type -- No such pffi type" type)))))
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(scheme-name (car (cdr expr)))
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(c-name (symbol->string (car (cdr (car (cdr (cdr (cdr expr))))))))
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(return-type (pffi-type->native-type (car (cdr (car (cdr (cdr (cdr (cdr expr)))))))))
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(argument-types
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(let ((types (cdr (car (cdr (cdr (cdr (cdr (cdr expr)))))))))
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(if (null? types)
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'()
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(map pffi-type->native-type (map car (map cdr types)))))))
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(if (null? argument-types)
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`(define ,scheme-name
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(foreign-safe-lambda ,return-type ,c-name))
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`(define ,scheme-name
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(foreign-safe-lambda ,return-type ,c-name ,@ argument-types)))))))
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(define-syntax pffi-define-callback
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(er-macro-transformer
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(lambda (expr rename compare)
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(let* ((pffi-type->native-type ; Chicken has this procedure in three places
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(lambda (type)
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(cond ((equal? type 'int8) 'byte)
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((equal? type 'uint8) 'unsigned-byte)
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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)
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((equal? type 'uint32) 'unsigned-int32)
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((equal? type 'int64) 'integer-64)
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((equal? type 'uint64) 'unsigned-integer64)
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((equal? type 'char) 'char)
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((equal? type 'unsigned-char) 'unsigned-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) 'c-pointer)
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((equal? type 'void) 'void)
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((equal? type 'callback) 'c-pointer)
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((equal? type 'struct) 'c-pointer)
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(else (error "pffi-type->native-type -- No such pffi type" type)))))
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(scheme-name (car (cdr expr)))
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(return-type (pffi-type->native-type (car (cdr (car (cdr (cdr expr)))))))
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(argument-types
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(let ((types (cdr (car (cdr (cdr (cdr expr)))))))
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(if (null? types)
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'()
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(map pffi-type->native-type (map car (map cdr types))))))
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(argument-names (car (cdr (car (cdr (cdr (cdr (cdr expr))))))))
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(arguments (map
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(lambda (name type)
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`(,name ,type))
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argument-types argument-names))
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(procedure-body (cdr (cdr (car (cdr (cdr (cdr (cdr expr)))))))))
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`(begin (define-external ,(cons 'external_123456789 arguments)
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,return-type
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(begin ,@ procedure-body))
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(define ,scheme-name (location external_123456789)))))))
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(define size-of-type
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(lambda (type)
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(cond ((equal? type 'int8) (foreign-value "sizeof(int8_t)" int))
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((equal? type 'uint8) (foreign-value "sizeof(uint8_t)" int))
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((equal? type 'int16) (foreign-value "sizeof(int16_t)" int))
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((equal? type 'uint16) (foreign-value "sizeof(uint16_t)" int))
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((equal? type 'int32) (foreign-value "sizeof(int32_t)" int))
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((equal? type 'uint32) (foreign-value "sizeof(uint32_t)" int))
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((equal? type 'int64) (foreign-value "sizeof(int64_t)" int))
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((equal? type 'uint64) (foreign-value "sizeof(uint64_t)" int))
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((equal? type 'char) (foreign-value "sizeof(char)" int))
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((equal? type 'unsigned-char) (foreign-value "sizeof(unsigned char)" int))
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((equal? type 'short) (foreign-value "sizeof(short)" int))
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((equal? type 'unsigned-short) (foreign-value "sizeof(unsigned short)" int))
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((equal? type 'int) (foreign-value "sizeof(int)" int))
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((equal? type 'unsigned-int) (foreign-value "sizeof(unsigned int)" int))
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((equal? type 'long) (foreign-value "sizeof(long)" int))
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((equal? type 'unsigned-long) (foreign-value "sizeof(unsigned long)" int))
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((equal? type 'float) (foreign-value "sizeof(float)" int))
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((equal? type 'double) (foreign-value "sizeof(double)" int))
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((equal? type 'pointer) (foreign-value "sizeof(void*)" int))
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((equal? type 'string) (foreign-value "sizeof(void*)" int))
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((equal? type 'callback) (foreign-value "sizeof(void*)" int)))))
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(define pffi-pointer-allocate
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(lambda (size)
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(allocate size)))
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(define pffi-pointer-address
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(lambda (pointer)
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(pointer->address pointer)))
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(define pffi-pointer-null
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(lambda ()
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(address->pointer 0)))
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(pffi-define strncpy-ps #f 'strncpy 'pointer (list 'pointer 'pointer 'int))
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(pffi-define puts #f 'puts 'int (list 'pointer))
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(pffi-define memset #f 'memset 'void (list 'pointer 'int 'int))
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(define pffi-string->pointer
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(lambda (string-content)
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(let* ((size (string-length string-content))
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(pointer (pffi-pointer-allocate (+ size 1))))
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(memset pointer 0 (+ size 1))
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(strncpy-ps pointer (location string-content) size)
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;(puts pointer)
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pointer)))
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#;(define pffi-string->pointer
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(foreign-lambda* c-pointer
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((c-string str))
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"C_return((void*)str);"))
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;(pffi-define strncpy-pp #f 'strncpy 'pointer (list 'pointer 'pointer 'int))
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;(pffi-define strlen #f 'strlen 'int (list 'pointer))
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(define pffi-pointer->string
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(foreign-lambda* c-string
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((c-pointer p))
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"C_return((char*)p);"))
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(define-syntax pffi-shared-object-load
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(er-macro-transformer
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(lambda (expr rename compare)
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(let* ((headers (cdr (car (cdr expr)))))
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`(begin
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,@ (map
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(lambda (header)
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`(foreign-declare ,(string-append "#include <" header ">")))
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headers))))))
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(define pffi-pointer-free
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(lambda (pointer)
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(if (not (pointer? pointer))
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(error "pffi-pointer-free -- Argument is not pointer" pointer))
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(free pointer)))
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(define pffi-pointer-null?
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(lambda (pointer)
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(if (and (not (pointer? pointer))
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pointer)
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#f
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(or (not pointer) ; #f counts as null pointer on Chicken
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(= (pointer->address pointer) 0)))))
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(define pffi-pointer-set!
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(lambda (pointer type offset value)
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(cond
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((equal? type 'int8) (pointer-s8-set! (pointer+ pointer offset) value))
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((equal? type 'uint8) (pointer-u8-set! (pointer+ pointer offset) value))
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((equal? type 'int16) (pointer-s16-set! (pointer+ pointer offset) value))
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((equal? type 'uint16) (pointer-u16-set! (pointer+ pointer offset) value))
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((equal? type 'int32) (pointer-s32-set! (pointer+ pointer offset) value))
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((equal? type 'uint32) (pointer-u32-set! (pointer+ pointer offset) value))
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((equal? type 'int64) (pointer-s64-set! (pointer+ pointer offset) value))
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((equal? type 'uint64) (pointer-u64-set! (pointer+ pointer offset) value))
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((equal? type 'char) (pointer-s8-set! (pointer+ pointer offset) (char->integer value)))
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((equal? type 'short) (pointer-s8-set! (pointer+ pointer offset) value))
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((equal? type 'unsigned-short) (pointer-u8-set! (pointer+ pointer offset) value))
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((equal? type 'int) (pointer-s32-set! (pointer+ pointer offset) value))
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((equal? type 'unsigned-int) (pointer-u32-set! (pointer+ pointer offset) value))
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((equal? type 'long) (pointer-s32-set! (pointer+ pointer offset) value))
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((equal? type 'unsigned-long) (pointer-u32-set! (pointer+ pointer offset) value))
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((equal? type 'float) (pointer-f32-set! (pointer+ pointer offset) value))
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((equal? type 'double) (pointer-f64-set! (pointer+ pointer offset) value))
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((equal? type 'pointer) (pointer-u64-set! (pointer+ pointer offset) (pointer->address value))))))
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(define pffi-pointer-get
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(lambda (pointer type offset)
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(cond
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((equal? type 'int8) (pointer-s8-ref (pointer+ pointer offset)))
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((equal? type 'uint8) (pointer-u8-ref (pointer+ pointer offset)))
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((equal? type 'int16) (pointer-s16-ref (pointer+ pointer offset)))
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((equal? type 'uint16) (pointer-u16-ref (pointer+ pointer offset)))
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((equal? type 'int32) (pointer-s32-ref (pointer+ pointer offset)))
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((equal? type 'uint32) (pointer-u32-ref (pointer+ pointer offset)))
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((equal? type 'int64) (pointer-s64-ref (pointer+ pointer offset)))
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((equal? type 'uint64) (pointer-u64-ref (pointer+ pointer offset)))
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((equal? type 'char) (integer->char (pointer-s8-ref (pointer+ pointer offset))))
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((equal? type 'short) (pointer-s8-ref (pointer+ pointer offset)))
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((equal? type 'unsigned-short) (pointer-u8-ref (pointer+ pointer offset)))
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((equal? type 'int) (pointer-s32-ref (pointer+ pointer offset)))
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((equal? type 'unsigned-int) (pointer-u32-ref (pointer+ pointer offset)))
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((equal? type 'long) (pointer-s32-ref (pointer+ pointer offset)))
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((equal? type 'unsigned-long) (pointer-u32-ref (pointer+ pointer offset)))
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((equal? type 'float) (pointer-f32-ref (pointer+ pointer offset)))
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((equal? type 'double) (pointer-f64-ref (pointer+ pointer offset)))
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((equal? type 'pointer) (address->pointer (pointer-u64-ref (pointer+ pointer offset)))))))
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(define pffi-struct-dereference
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(lambda (struct)
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(pffi-pointer-address (pffi-struct-pointer struct))))
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