How can I return user.Class.Name string in reflectCallArgs. Is it impossible?
type User struct {
Class struct {
Name string
}
}
var user = &User{}
reflectCallArgs := func(src interface{}) string {
//how to get this string?
return "user.Class.Name"
}
reflectCallArgs(user.Class.Name)
The nearest thing you can get is the filename and line number where the function is being called, by querying runtime.Caller. https://golang.org/pkg/runtime/#Caller
func Caller(skip int) (pc uintptr, file string, line int, ok bool)
Caller reports file and line number information about function invocations on the calling goroutine's stack. The argument skip is the number of stack frames to ascend, with 0 identifying the caller of Caller. (For historical reasons the meaning of skip differs between Caller and Callers.) The return values report the program counter, file name, and line number within the file of the corresponding call. The boolean ok is false if it was not possible to recover the information.
However, you need to have access to that file and be able to parse the file (or that single line) to get "caller arguments string".