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18 lines
543 B
Go
18 lines
543 B
Go
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package utils
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import (
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"reflect"
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"unsafe"
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)
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// AccessField can used to access unexported field of a struct
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// valueType must be the exact type of the field or it will panic
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func AccessField[valueType any](obj any, fieldName string) *valueType {
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field := reflect.ValueOf(obj).Elem().FieldByName(fieldName)
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if field.Type() != reflect.TypeOf(*new(valueType)) {
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panic("field type: " + field.Type().String() + ", valueType: " + reflect.TypeOf(*new(valueType)).String())
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}
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v := (*valueType)(unsafe.Pointer(field.UnsafeAddr()))
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return v
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}
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