| // Copyright (C) 2014 The Android Open Source Project |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package schema |
| |
| import "android.googlesource.com/platform/tools/gpu/binary" |
| |
| // Object is an instance of a Class. |
| type Object struct { |
| Type *Class |
| Fields []interface{} |
| } |
| |
| // Class implements binary.Object using the schema system to do the encoding and |
| // decoding of fields. |
| func (o *Object) Class() binary.Class { |
| return o.Type |
| } |
| |
| // Base returns the value of the single, anonymous field of o. If o does not |
| // have a single anonymous field, then Base returns nil. |
| func (o *Object) Base() interface{} { |
| if len(o.Fields) != 1 { |
| return nil // Multiple fields |
| } |
| if ty := o.Type.Fields[0]; ty.Declared == "" { |
| return o.Fields[0] |
| } |
| return nil // Not anonymous |
| } |
| |
| // Underlying traverses the single, anonymous fields nested in v, returning the |
| // deepest-nested value that is not an object or does not have a single, |
| // anonymous field. |
| // If v is not an Object or does not have a single, anonymous field then v is |
| // returned. |
| func Underlying(v interface{}) interface{} { |
| if o, ok := v.(*Object); ok { |
| if b := o.Base(); b != nil { |
| return Underlying(b) |
| } |
| } |
| return v |
| } |