(impfunc createStringFromBytes (ret string) (arg intptr) (arg u32))
(impfunc sprintf (conv C)
	(ret i32) // int
	(arg intptr) // char* buf
	(arg intptr) // const char* fmt
	(vararg)
)
(impfunc memcpy (conv C)
	(ret intptr) // void*
	(arg intptr) // void* dst
	(arg intptr) // const void* src
	(arg intptr) // size_t size
)

(class stringbuffer
	
	(var buffer (? (handle (array u8))))
	(var size u32)
	
	(func getString (ret string) (body
		(return (call createStringFromBytes (cast intptr buffer) (prop buffer size)))
	))
	
	(func reserve (ret void) (arg u32 sz) (body
		(if (eq buffer null) (block
			(set buffer (new (array u8) sz))
			(return)
		))
		(if (lt (prop buffer size) sz) (block
			(var newsz (add size sz))
			(var newbuf (new (array u8) newsz))
			// TODO arrayCopy
			(if buffer
				(call memcpy newbuf buffer (cast intptr size))
			)
			(set buffer newbuf)
		))
	))
	
	(func writeRaw (ret void) (arg intptr buf) (arg u32 sz) (body
		(call reserve (add sz size))
		(call memcpy (add (cast intptr buffer) (cast intptr size)) buf (cast intptr sz))
		(set size (add size sz))
	))
	
	(func write (ret void) (arg string str) (body
		(call writeRaw (prop str cStringPtr) (prop str size))
	))
	
	(func write (ret void) (arg i32 i32val) (body
		(var buf (array u8 32))
		(call writeRaw buf (call sprintf (cast intptr buf) (prop "%d" cStringPtr) i32val))
	))
)