| // Copyright 2016 The LUCI Authors. |
| // |
| // 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 flagpb |
| |
| import ( |
| "google.golang.org/protobuf/types/descriptorpb" |
| |
| "go.chromium.org/luci/common/proto/google/descutil" |
| ) |
| |
| // Resolver resolves type names. |
| type Resolver interface { |
| // Resolve resolves a type name to |
| // *descriptor.DescriptorProto or *descriptor.EnumDescriptorProto. |
| Resolve(name string) interface{} |
| } |
| |
| // NewResolver creates a resolver for all types in a file descriptor set. |
| // Resolving time complexity is linear. |
| func NewResolver(set *descriptorpb.FileDescriptorSet) Resolver { |
| return &descriptorSetResolver{set} |
| } |
| |
| type descriptorSetResolver struct { |
| set *descriptorpb.FileDescriptorSet |
| } |
| |
| func (r *descriptorSetResolver) Resolve(name string) interface{} { |
| _, o, _ := descutil.Resolve(r.set, name) |
| switch o := o.(type) { |
| case *descriptorpb.DescriptorProto, *descriptorpb.EnumDescriptorProto: |
| return o |
| default: |
| return nil |
| } |
| } |