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39 lines
1.2 KiB
39 lines
1.2 KiB
/* |
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Copyright 2014 The Kubernetes Authors. |
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Licensed under the Apache License, Version 2.0 (the "License"); |
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you may not use this file except in compliance with the License. |
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You may obtain a copy of the License at |
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http://www.apache.org/licenses/LICENSE-2.0 |
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Unless required by applicable law or agreed to in writing, software |
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distributed under the License is distributed on an "AS IS" BASIS, |
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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See the License for the specific language governing permissions and |
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limitations under the License. |
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*/ |
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package conversion |
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import ( |
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"fmt" |
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"reflect" |
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) |
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// EnforcePtr ensures that obj is a pointer of some sort. Returns a reflect.Value |
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// of the dereferenced pointer, ensuring that it is settable/addressable. |
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// Returns an error if this is not possible. |
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func EnforcePtr(obj interface{}) (reflect.Value, error) { |
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v := reflect.ValueOf(obj) |
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if v.Kind() != reflect.Ptr { |
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if v.Kind() == reflect.Invalid { |
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return reflect.Value{}, fmt.Errorf("expected pointer, but got invalid kind") |
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} |
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return reflect.Value{}, fmt.Errorf("expected pointer, but got %v type", v.Type()) |
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} |
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if v.IsNil() { |
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return reflect.Value{}, fmt.Errorf("expected pointer, but got nil") |
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} |
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return v.Elem(), nil |
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}
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