Function checkFile

iolib.go:50–57

(L *LState)

const fileDefaultReadBuffer = 4096

func checkFile(L *LState) *lFile {
	ud := L.CheckUserData(1)
	if file, ok := ud.Value.(*lFile); ok {
		return file
	}
	L.ArgError(1, "file expected")
	return nil
}

func errorIfFileIsClosed(L *LState, file *lFile) {
	if file.closed {