Method encodeValue

codec/encode.go:1281–1345

encodeValue will encode a value. Note that encodeValue will handle nil in the stream early, so that the subsequent calls i.e. kXXX methods, etc do not have to handle it themselves.

(rv reflect.Value, fn *codecFn)

// Note that encodeValue will handle nil in the stream early, so that the
// subsequent calls i.e. kXXX methods, etc do not have to handle it themselves.
func (e *Encoder) encodeValue(rv reflect.Value, fn *codecFn) {
	// if a valid fn is passed, it MUST BE for the dereferenced type of rv

	// MARKER: We check if value is nil here, so that the kXXX method do not have to.

	var sptr interface{}
	var rvp reflect.Value
	var rvpValid bool
TOP:
	switch rv.Kind() {
	case reflect.Ptr:
		if rvIsNil(rv) {
			e.e.EncodeNil()
			return
		}
		rvpValid = true
		rvp = rv
		rv = rv.Elem()
		goto TOP
	case reflect.Interface:
		if rvIsNil(rv) {
			e.e.EncodeNil()
			return
		}
		rvpValid = false
		rvp = reflect.Value{}
		rv = rv.Elem()
		goto TOP
	case reflect.Struct:
		if rvpValid && e.h.CheckCircularRef {
			sptr = rv2i(rvp)
			for _, vv := range e.ci {
				if eq4i(sptr, vv) { // error if sptr already seen
					e.errorf("circular reference found: %p, %T", sptr, sptr)
				}
			}
			e.ci = append(e.ci, sptr)
		}
	case reflect.Slice, reflect.Map, reflect.Chan:
		if rvIsNil(rv) {
			e.e.EncodeNil()
			return
		}
	case reflect.Invalid, reflect.Func:
		e.e.EncodeNil()
		return
	}

	if fn == nil {
		fn = e.h.fn(rv.Type())
	}

	if !fn.i.addrE { // typically, addrE = false, so check it first
		// keep rv same
	} else if rvpValid {
		rv = rvp
	} else {
		rv = e.addrRV(rv, fn.i.ti.rt, fn.i.ti.ptr)