func (d *deepCopyGen) Generate(file *generator.FileDescriptor) {
d.PluginImports = generator.NewPluginImports(d.Generator)
// TODO(stevvooe): Ideally, this could be taken as a parameter to the
// deepcopy plugin to control the package import, but this is good enough,
// for now.
d.copyPkg = d.NewImport("github.com/docker/swarmkit/api/deepcopy")
d.P()
for _, m := range file.Messages() {
if m.DescriptorProto.GetOptions().GetMapEntry() {
continue
}
if !plugin.DeepcopyEnabled(m.Options) {
continue
}
d.genMsgDeepCopy(m)
}
d.P()
}
func (d *deepCopyGen) genMsgDeepCopy(m *generator.Descriptor) {
if !plugin.DeepcopyEnabled(m.Options) {
return
}
ccTypeName := generator.CamelCaseSlice(m.TypeName())
d.gen.P("func (m *", ccTypeName, ") Copy() *", ccTypeName, "{")
d.gen.P("\tif m == nil {")
d.gen.P("\t\treturn nil")
d.gen.P("\t}")
d.gen.P()
d.gen.P("\to := &", ccTypeName, "{")
var funcs []func()
oneOfFuncs := make(map[string][]func())
for _, f := range m.Field {
fName := generator.CamelCase(*f.Name)
if gogoproto.IsCustomName(f) {
fName = gogoproto.GetCustomName(f)
}
notNullablePrefix := ""
if !gogoproto.IsNullable(f) {
notNullablePrefix = "*"
}
// Handle all kinds of message type
if f.IsMessage() {
// Handle map type
if mapfunc := d.genMapWriter(m, f, notNullablePrefix); mapfunc != nil {
funcs = append(funcs, mapfunc)
continue
}
// Handle any message which is not repeated or part of oneof
if !f.IsRepeated() && f.OneofIndex == nil {
d.gen.P("\t\t", fName, ": ", notNullablePrefix, "m.", fName, ".Copy(),")
continue
}
}
// Handle repeated field
if f.IsRepeated() {
funcs = append(funcs, d.genRepeatedWriter(m, f, notNullablePrefix))
continue
}
// Handle oneof type
if f.OneofIndex != nil {
d.genOneOfWriter(m, f, oneOfFuncs)
continue
}
// Handle all kinds of scalar type
d.gen.P("\t\t", fName, ": m.", fName, ",")
}
d.gen.P("\t}")
d.gen.P()
for _, fn := range funcs {
fn()
}
// Sort map keys from oneOfFuncs so that generated code has consistent
// ordering.
oneOfKeys := make([]string, 0, len(oneOfFuncs))
for key := range oneOfFuncs {
oneOfKeys = append(oneOfKeys, key)
}
sort.Strings(oneOfKeys)
for _, key := range oneOfKeys {
oneOfNameFuncs := oneOfFuncs[key]
for _, oneOfFunc := range oneOfNameFuncs {
oneOfFunc()
}
d.gen.P("\t}")
d.gen.P()
}
d.gen.P("\treturn o")
d.gen.P("}")
d.gen.P()
}