Jack Christensen
1cef9075d9
* Convert typed nils to untyped nils at beginning of encoding process. * Restore v4 json/jsonb null behavior * Add anynil internal package
37 lines
839 B
Go
37 lines
839 B
Go
package anynil
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import "reflect"
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// Is returns true if value is any type of nil. e.g. nil or []byte(nil).
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func Is(value interface{}) bool {
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if value == nil {
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return true
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}
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refVal := reflect.ValueOf(value)
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switch refVal.Kind() {
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case reflect.Chan, reflect.Func, reflect.Map, reflect.Ptr, reflect.UnsafePointer, reflect.Interface, reflect.Slice:
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return refVal.IsNil()
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default:
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return false
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}
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}
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// Normalize converts typed nils (e.g. []byte(nil)) into untyped nil. Other values are returned unmodified.
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func Normalize(v interface{}) interface{} {
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if Is(v) {
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return nil
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}
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return v
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}
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// NormalizeSlice converts all typed nils (e.g. []byte(nil)) in s into untyped nils. Other values are unmodified. s is
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// mutated in place.
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func NormalizeSlice(s []interface{}) {
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for i := range s {
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if Is(s[i]) {
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s[i] = nil
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}
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}
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}
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