Source file src/github.com/jackc/pgx/v5/internal/anynil/anynil.go

Documentation: github.com/jackc/pgx/v5/internal/anynil

     1  package anynil
     2  
     3  import "reflect"
     4  
     5  // Is returns true if value is any type of nil. e.g. nil or []byte(nil).
     6  func Is(value any) bool {
     7  	if value == nil {
     8  		return true
     9  	}
    10  
    11  	refVal := reflect.ValueOf(value)
    12  	switch refVal.Kind() {
    13  	case reflect.Chan, reflect.Func, reflect.Map, reflect.Ptr, reflect.UnsafePointer, reflect.Interface, reflect.Slice:
    14  		return refVal.IsNil()
    15  	default:
    16  		return false
    17  	}
    18  }
    19  
    20  // Normalize converts typed nils (e.g. []byte(nil)) into untyped nil. Other values are returned unmodified.
    21  func Normalize(v any) any {
    22  	if Is(v) {
    23  		return nil
    24  	}
    25  	return v
    26  }
    27  
    28  // NormalizeSlice converts all typed nils (e.g. []byte(nil)) in s into untyped nils. Other values are unmodified. s is
    29  // mutated in place.
    30  func NormalizeSlice(s []any) {
    31  	for i := range s {
    32  		if Is(s[i]) {
    33  			s[i] = nil
    34  		}
    35  	}
    36  }
    37  

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