83 lines
2.8 KiB
Go
83 lines
2.8 KiB
Go
// Extensions for Protocol Buffers to create more go like structures.
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//
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// Copyright (c) 2015, Vastech SA (PTY) LTD. rights reserved.
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// http://github.com/gogo/protobuf/gogoproto
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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package vanity
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import (
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"github.com/gogo/protobuf/gogoproto"
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"github.com/gogo/protobuf/proto"
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descriptor "github.com/gogo/protobuf/protoc-gen-gogo/descriptor"
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)
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func FieldHasBoolExtension(field *descriptor.FieldDescriptorProto, extension *proto.ExtensionDesc) bool {
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if field.Options == nil {
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return false
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}
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value, err := proto.GetExtension(field.Options, extension)
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if err != nil {
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return false
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}
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if value == nil {
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return false
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}
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if value.(*bool) == nil {
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return false
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}
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return true
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}
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func SetBoolFieldOption(extension *proto.ExtensionDesc, value bool) func(field *descriptor.FieldDescriptorProto) {
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return func(field *descriptor.FieldDescriptorProto) {
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if FieldHasBoolExtension(field, extension) {
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return
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}
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if field.Options == nil {
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field.Options = &descriptor.FieldOptions{}
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}
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if err := proto.SetExtension(field.Options, extension, &value); err != nil {
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panic(err)
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}
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}
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}
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func TurnOffNullable(field *descriptor.FieldDescriptorProto) {
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if field.IsRepeated() && !field.IsMessage() {
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return
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}
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SetBoolFieldOption(gogoproto.E_Nullable, false)(field)
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}
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func TurnOffNullableForNativeTypesWithoutDefaultsOnly(field *descriptor.FieldDescriptorProto) {
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if field.IsRepeated() || field.IsMessage() {
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return
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}
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if field.DefaultValue != nil {
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return
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}
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SetBoolFieldOption(gogoproto.E_Nullable, false)(field)
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}
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