func init
	// adds using namespace
	sys.add_use('System.IO')

	// initialize instance
	if(linked("FileStream"))
		this.setfield('fs', d("FileStream"))
	elseif(isdef("FileStream"))
		error(this.name + ' - property FileStream does not defined')
	else
		this.setfield('fs', sys.get_undef_manager("FileStream"))
	end

	if(linked("doRead"))
		sys.add_var('buf', 'byte[]')
		if(linked("Result"))
			sys.add_var(this.name, 1)
		end
	end

	if(linked("onError"))
		this.setfield('ex', 'ex' + this.id)
	end
end

func doPosition(data)
	blk.println(this.fs, '.Position = ', d("pos"), ';')
end

func doFlush2(data)
	linked("onError") ? blk.println('try {').inc() : ''
		blk.println(this.fs, '.Flush(', d("flushToDisk"), ');')
	if(linked("onError"))
		blk.dec().println('} catch (Exception ', this.ex, ') {').inc()
			event("onError", this.ex + '.Message')
		blk.dec().println('}')
	end
end

func doLock(data)
	linked("onError") ? blk.println('try {').inc() : ''
		blk.println(this.fs, '.Lock(', d("pos"), ', ', sys.get_typed_field(data, 'NumBytes', 105), ');')
	if(linked("onError"))
		blk.dec().println('} catch (Exception ', this.ex, ') {').inc()
			event("onError", this.ex + '.Message')
		blk.dec().println('}')
	end
end

func doRead(data)
	linked("onError") ? blk.println('try {').inc() : ''
		blk.println(this.buf, ' = new byte[', d("Count"),']', ';')
		if(linked("Result"))
			blk.println(this.codename, ' = ', this.make_read(data), ';')
			event("onRead", this.buf)
		else
			blk.println(this.make_read(data), ';')
			event("onRead", this.buf)
		end
	if(linked("onError"))
		blk.dec().println('} catch (Exception ', this.ex, ') {').inc()
			event("onError", this.ex + '.Message')
		blk.dec().println('}')
	end
end

func doSeek(data)
	linked("onError") ? blk.println('try {').inc() : ''
		if(linked("onSeek"))
			event("onSeek", this.fs + '.Seek(' + d("pos") + ', ' + (linked("origin") ? d("origin") : 'SeekOrigin.' + this.props("Origin").value) + ')')
		else
			blk.println(this.fs, '.Seek(', d("pos"), ', ', linked("origin") ? d("origin") : 'SeekOrigin.' + this.props("Origin").value, ');')
		end
	if(linked("onError"))
		blk.dec().println('} catch (Exception ', this.ex, ') {').inc()
			event("onError", this.ex + '.Message')
		blk.dec().println('}')
	end
end

func doSetAccessControl(data)
	linked("onError") ? blk.println('try {').inc() : ''
		blk.println(this.fs, '.SetAccessControl(', linked("security") ? d("security") : sys.get_undef_manager("Security"), ');')
	if(linked("onError"))
		blk.dec().println('} catch (Exception ', this.ex, ') {').inc()
			event("onError", this.ex + '.Message')
		blk.dec().println('}')
	end
end

func doSetLength(data)
	linked("onError") ? blk.println('try {').inc() : ''
		blk.println(this.fs, '.SetLength(', sys.get_typed_field(data, 'NumBytes', 105), ');')
	if(linked("onError"))
		blk.dec().println('} catch (Exception ', this.ex, ') {').inc()
			event("onError", this.ex + '.Message')
		blk.dec().println('}')
	end
end

func doUnlock(data)
	linked("onError") ? blk.println('try {').inc() : ''
		blk.println(this.fs, '.Unlock(', d("pos"), ', ', sys.get_typed_field(data, 'NumBytes', 105), ');')
	if(linked("onError"))
		blk.dec().println('} catch (Exception ', this.ex, ') {').inc()
			event("onError", this.ex + '.Message')
		blk.dec().println('}')
	end
end

func doWrite(data)
	linked("onError") ? blk.println('try {').inc() : ''
		blk.println(this.fs, '.Write(', d("array"), ', ', d("offset"), ', ', d("count"), ');')
	if(linked("onError"))
		blk.dec().println('} catch (Exception ', this.ex, ') {').inc()
			event("onError", this.ex + '.Message')
		blk.dec().println('}')
	end
end

func doWriteByte(data)
	linked("onError") ? blk.println('try {').inc() : ''
		blk.println(this.fs, '.WriteByte(', d("value"), ');')
	if(linked("onError"))
		blk.dec().println('} catch (Exception ', this.ex, ') {').inc()
			event("onError", this.ex + '.Message')
		blk.dec().println('}')
	end
end

func doFlush()
	blk.println(this.fs, '.Flush();')
end

func Length
	return(this.fs + '.Length')
end

func Position
	return(this.fs + '.Position')
end

func ReadByte()
	return(this.fs + '.ReadByte()')
end

func Result
	return(this.codename)
end

func make_read(data)
	return(this.fs + '.Read(' + this.buf + ', ' + d("Offset") + ', ' + d("Count") + ')')
end