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util.go
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/
util.go
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package schema
import "reflect"
func indirectType(t reflect.Type) reflect.Type {
if t.Kind() == reflect.Ptr {
t = t.Elem()
}
return t
}
func fieldByIndex(v reflect.Value, index []int) (_ reflect.Value, ok bool) {
if len(index) == 1 {
return v.Field(index[0]), true
}
for i, idx := range index {
if i > 0 {
if v.Kind() == reflect.Ptr {
if v.IsNil() {
return v, false
}
v = v.Elem()
}
}
v = v.Field(idx)
}
return v, true
}
func fieldByIndexAlloc(v reflect.Value, index []int) reflect.Value {
if len(index) == 1 {
return v.Field(index[0])
}
for i, idx := range index {
if i > 0 {
v = indirectNil(v)
}
v = v.Field(idx)
}
return v
}
func indirectNil(v reflect.Value) reflect.Value {
if v.Kind() == reflect.Ptr {
if v.IsNil() {
v.Set(reflect.New(v.Type().Elem()))
}
v = v.Elem()
}
return v
}