//
// variable   <expr> (<untyped kind> <mode>                    )
// variable   <expr> (               <mode>       of type <typ>)
//
// mapindex   <expr> (<untyped kind> <mode>                    )
// mapindex   <expr> (               <mode>       of type <typ>)
//
// value      <expr> (<untyped kind> <mode>                    )
// value      <expr> (               <mode>       of type <typ>)
//

//
// variable   <expr> (<untyped kind> <mode>                    )
// variable   <expr> (               <mode>       of type <typ>)
//
// mapindex   <expr> (<untyped kind> <mode>                    )
// mapindex   <expr> (               <mode>       of type <typ>)
//
// value      <expr> (<untyped kind> <mode>                    )
// value      <expr> (               <mode>       of type <typ>)
//

func (tv TypeAndValue) Assignable() bool {
	return tv.mode == variable || tv.mode == mapindex
}

// HasOk reports whether the corresponding expression may be
// used on the rhs of a comma-ok assignment.
func (tv TypeAndValue) HasOk() bool {
	return tv.mode == commaok || tv.mode == mapindex
}

// Instance reports the type arguments and instantiated type for type and

func (tv TypeAndValue) Assignable() bool {
	return tv.mode == variable || tv.mode == mapindex
}

// HasOk reports whether the corresponding expression may be
// used on the rhs of a comma-ok assignment.
func (tv TypeAndValue) HasOk() bool {
	return tv.mode == commaok || tv.mode == mapindex
}

// Instance reports the type arguments and instantiated type for type and

}

func processMap(e reflect.Value, failOnMissingValidation bool, values *valuesv1alpha1.Values, iopls *v1alpha1.IstioOperatorSpec) util.Errors {
	var validationErrors util.Errors
	for _, k := range e.MapKeys() {
		v := e.MapIndex(k)
		validationErrors = append(validationErrors, ValidateSubTypes(v, failOnMissingValidation, values, iopls)...)
	}

	return validationErrors

	case tv.IsType():
		return "type"
	case tv.IsBuiltin():
		return "builtin"
	case tv.IsNil():
		return "nil"
	case tv.Assignable():
		if tv.Addressable() {
			return "var"
		}
		return "mapindex"
	case tv.IsValue():
		return "value"
	default:
		return "unknown"
	}
}

func exprString(fset *token.FileSet, expr ast.Expr) string {
	var buf strings.Builder
	format.Node(&buf, fset, expr)

				return true
			}
		}
		return false
	}, cmp.Ignore())
}

func pathToStringList(path cmp.Path) (up []string) {
	for _, step := range path {
		switch t := step.(type) {
		case cmp.MapIndex:
			up = append(up, fmt.Sprintf("%v", t.Key()))
		case cmp.SliceIndex:
			// Create an element, but never an NPath
			s := t.String()
			if util.IsNPathElement(s) {
				// Convert e.g. [0] to [#0]

	}

	// Check that value for missing key is zero.
	x := mv.MapIndex(ValueOf("hello"))
	if x.Kind() != Invalid {
		t.Errorf("m.MapIndex(\"hello\") for nil map = %v, want Invalid Value", x)
	}

	// Check big value too.
	var mbig map[string][10 << 20]byte
	x = ValueOf(mbig).MapIndex(ValueOf("hello"))
	if x.Kind() != Invalid {
		t.Errorf("mbig.MapIndex(\"hello\") for nil map = %v, want Invalid Value", x)
	}

			}
			item = item.Index(x)
		case reflect.Map:
			index, err := prepareArg(index, item.Type().Key())
			if err != nil {
				return reflect.Value{}, err
			}
			if x := item.MapIndex(index); x.IsValid() {
				item = x
			} else {
				item = reflect.Zero(item.Type().Elem())
			}
		case reflect.Invalid:
			// the loop holds invariant: item.IsValid()
			panic("unreachable")
		default:

}

var stringType = rtypeOf("")

// MapIndex returns the value associated with key in the map v.
// It panics if v's Kind is not [Map].
// It returns the zero Value if key is not found in the map or if v represents a nil map.
// As in Go, the key's value must be assignable to the map's key type.
func (v Value) MapIndex(key Value) Value {
	v.mustBe(Map)
	tt := (*mapType)(unsafe.Pointer(v.typ()))