func (g *genConversion) doBuiltin(inType, outType *types.Type, sw *generator.SnippetWriter) {
if inType == outType {
sw.Do("*out = *in\n", nil)
} else {
sw.Do("*out = $.|raw$(*in)\n", outType)
}
}
// writeCalls generates a list of function calls based on the calls field for the provided variable
// name and pointer.
func (n *callNode) writeCalls(varName string, isVarPointer bool, sw *generator.SnippetWriter) {
accessor := varName
if !isVarPointer {
accessor = "&" + accessor
}
for _, fn := range n.call {
sw.Do("$.fn|raw$($.var$)\n", generator.Args{
"fn": fn,
"var": accessor,
})
}
}
// WriteMethod performs an in-order traversal of the calltree, generating loops and if blocks as necessary
// to correctly turn the call tree into a method body that invokes all calls on all child nodes of the call tree.
// Depth is used to generate local variables at the proper depth.
func (n *callNode) WriteMethod(varName string, depth int, ancestors []*callNode, sw *generator.SnippetWriter) {
// if len(n.call) > 0 {
// sw.Do(fmt.Sprintf("// %s\n", callPath(append(ancestors, n)).String()), nil)
// }
if len(n.field) > 0 {
varName = varName + "." + n.field
}
index, local := varsForDepth(depth)
vars := generator.Args{
"index": index,
"local": local,
"var": varName,
}
isPointer := n.elem
if isPointer && len(ancestors) > 0 {
sw.Do("if $.var$ != nil {\n", vars)
}
switch {
case n.index:
sw.Do("for $.index$ := range $.var$ {\n", vars)
sw.Do("$.local$ := &$.var$[$.index$]\n", vars)
n.writeCalls(local, true, sw)
for i := range n.children {
n.children[i].WriteMethod(local, depth+1, append(ancestors, n), sw)
}
sw.Do("}\n", nil)
case n.key:
default:
n.writeCalls(varName, isPointer, sw)
for i := range n.children {
n.children[i].WriteMethod(varName, depth, append(ancestors, n), sw)
}
}
if isPointer && len(ancestors) > 0 {
sw.Do("}\n", nil)
}
}
func (g *genSet) lessBody(sw *generator.SnippetWriter, t *types.Type) {
// TODO: make this recursive, handle pointers and multiple nested structs...
switch t.Kind {
case types.Struct:
for _, m := range types.FlattenMembers(t.Members) {
sw.Do("if lhs.$.Name$ < rhs.$.Name$ { return true }\n", m)
sw.Do("if lhs.$.Name$ > rhs.$.Name$ { return false }\n", m)
}
sw.Do("return false\n", nil)
default:
sw.Do("return lhs < rhs\n", nil)
}
}
func (g *genDeepCopy) doMap(t *types.Type, sw *generator.SnippetWriter) {
sw.Do("*out = make($.|raw$)\n", t)
if t.Key.IsAssignable() {
switch {
case hasDeepCopyMethod(t.Elem):
sw.Do("for key, val := range *in {\n", nil)
sw.Do("(*out)[key] = val.DeepCopy()\n", nil)
sw.Do("}\n", nil)
case t.Elem.IsAnonymousStruct():
sw.Do("for key := range *in {\n", nil)
sw.Do("(*out)[key] = struct{}{}\n", nil)
sw.Do("}\n", nil)
case t.Elem.IsAssignable():
sw.Do("for key, val := range *in {\n", nil)
sw.Do("(*out)[key] = val\n", nil)
sw.Do("}\n", nil)
default:
sw.Do("for key, val := range *in {\n", nil)
if g.copyableAndInBounds(t.Elem) {
sw.Do("newVal := new($.|raw$)\n", t.Elem)
sw.Do("if err := $.type|dcFnName$(&val, newVal, c); err != nil {\n", argsFromType(t.Elem))
sw.Do("return err\n", nil)
sw.Do("}\n", nil)
sw.Do("(*out)[key] = *newVal\n", nil)
} else {
sw.Do("if newVal, err := c.DeepCopy(&val); err != nil {\n", nil)
sw.Do("return err\n", nil)
sw.Do("} else {\n", nil)
sw.Do("(*out)[key] = *newVal.(*$.|raw$)\n", t.Elem)
sw.Do("}\n", nil)
}
sw.Do("}\n", nil)
}
} else {
// TODO: Implement it when necessary.
sw.Do("for range *in {\n", nil)
sw.Do("// FIXME: Copying unassignable keys unsupported $.|raw$\n", t.Key)
sw.Do("}\n", nil)
}
}
func (g *genDeepCopy) doBuiltin(t *types.Type, sw *generator.SnippetWriter) {
sw.Do("*out = *in\n", nil)
}
func (g *genDefaulter) generateDefaulter(inType *types.Type, callTree *callNode, sw *generator.SnippetWriter) {
sw.Do("func $.inType|objectdefaultfn$(in *$.inType|raw$) {\n", defaultingArgsFromType(inType))
callTree.WriteMethod("in", 0, nil, sw)
sw.Do("}\n\n", nil)
}
func (g *genConversion) generateConversion(inType, outType *types.Type, sw *generator.SnippetWriter) {
args := argsFromType(inType, outType).
With("Scope", types.Ref(conversionPackagePath, "Scope"))
sw.Do("func auto"+nameTmpl+"(in *$.inType|raw$, out *$.outType|raw$, s $.Scope|raw$) error {\n", args)
// if no defaulter of form SetDefaults_XXX is defined, do not inline a check for defaulting.
if function, ok := g.manualDefaulters[inType]; ok {
sw.Do("$.|raw$(in)\n", function)
}
g.generateFor(inType, outType, sw)
sw.Do("return nil\n", nil)
sw.Do("}\n\n", nil)
if _, found := g.preexists(inType, outType); found {
// There is a public manual Conversion method: use it.
} else if skipped := g.skippedFields[inType]; len(skipped) != 0 {
// The inType had some fields we could not generate.
glog.Errorf("Warning: could not find nor generate a final Conversion function for %v -> %v", inType, outType)
glog.Errorf(" the following fields need manual conversion:")
for _, f := range skipped {
glog.Errorf(" - %v", f)
}
} else {
// Emit a public conversion function.
sw.Do("func "+nameTmpl+"(in *$.inType|raw$, out *$.outType|raw$, s $.Scope|raw$) error {\n", args)
sw.Do("return auto"+nameTmpl+"(in, out, s)\n", args)
sw.Do("}\n\n", nil)
}
}
func (g *genDeepCopy) doPointer(t *types.Type, sw *generator.SnippetWriter) {
if hasDeepCopyMethod(t.Elem) {
sw.Do("*out = new($.Elem|raw$)\n", t)
sw.Do("**out = (*in).DeepCopy()\n", nil)
} else if t.Elem.IsAssignable() {
sw.Do("*out = new($.Elem|raw$)\n", t)
sw.Do("**out = **in", nil)
} else if g.copyableAndInBounds(t.Elem) {
sw.Do("*out = new($.Elem|raw$)\n", t)
sw.Do("if err := $.type|dcFnName$(*in, *out, c); err != nil {\n", argsFromType(t.Elem))
sw.Do("return err\n", nil)
sw.Do("}\n", nil)
} else {
sw.Do("if newVal, err := c.DeepCopy(*in); err != nil {\n", nil)
sw.Do("return err\n", nil)
sw.Do("} else {\n", nil)
sw.Do("*out = newVal.(*$.|raw$)\n", t.Elem)
sw.Do("}\n", nil)
}
}
func (g *genConversion) doUnknown(inType, outType *types.Type, sw *generator.SnippetWriter) {
sw.Do("// FIXME: Type $.|raw$ is unsupported.\n", inType)
}
func (g *genConversion) doPointer(inType, outType *types.Type, sw *generator.SnippetWriter) {
sw.Do("*out = new($.Elem|raw$)\n", outType)
if isDirectlyAssignable(inType.Elem, outType.Elem) {
if inType.Elem == outType.Elem {
sw.Do("**out = **in\n", nil)
} else {
sw.Do("**out = $.|raw$(**in)\n", outType.Elem)
}
} else {
if function, ok := g.preexists(inType.Elem, outType.Elem); ok {
sw.Do("if err := $.|raw$(*in, *out, s); err != nil {\n", function)
} else if g.convertibleOnlyWithinPackage(inType.Elem, outType.Elem) {
sw.Do("if err := "+nameTmpl+"(*in, *out, s); err != nil {\n", argsFromType(inType.Elem, outType.Elem))
} else {
sw.Do("// TODO: Inefficient conversion - can we improve it?\n", nil)
sw.Do("if err := s.Convert(*in, *out, 0); err != nil {\n", nil)
}
sw.Do("return err\n", nil)
sw.Do("}\n", nil)
}
}
func (g *genConversion) doStruct(inType, outType *types.Type, sw *generator.SnippetWriter) {
for _, inMember := range inType.Members {
if tagvals := extractTag(inMember.CommentLines); tagvals != nil && tagvals[0] == "false" {
// This field is excluded from conversion.
sw.Do("// INFO: in."+inMember.Name+" opted out of conversion generation\n", nil)
continue
}
outMember, found := findMember(outType, inMember.Name)
if !found {
// This field doesn't exist in the peer.
sw.Do("// WARNING: in."+inMember.Name+" requires manual conversion: does not exist in peer-type\n", nil)
g.skippedFields[inType] = append(g.skippedFields[inType], inMember.Name)
continue
}
inMemberType, outMemberType := inMember.Type, outMember.Type
// create a copy of both underlying types but give them the top level alias name (since aliases
// are assignable)
if underlying := unwrapAlias(inMemberType); underlying != inMemberType {
copied := *underlying
copied.Name = inMemberType.Name
inMemberType = &copied
}
if underlying := unwrapAlias(outMemberType); underlying != outMemberType {
copied := *underlying
copied.Name = outMemberType.Name
outMemberType = &copied
}
args := map[string]interface{}{
"inType": inMemberType,
"outType": outMemberType,
"name": inMember.Name,
}
// check based on the top level name, not the underlying names
if function, ok := g.preexists(inMember.Type, outMember.Type); ok {
args["function"] = function
sw.Do("if err := $.function|raw$(&in.$.name$, &out.$.name$, s); err != nil {\n", args)
sw.Do("return err\n", nil)
sw.Do("}\n", nil)
continue
}
// If we can't auto-convert, punt before we emit any code.
if inMemberType.Kind != outMemberType.Kind {
sw.Do("// WARNING: in."+inMember.Name+" requires manual conversion: inconvertible types ("+
inMemberType.String()+" vs "+outMemberType.String()+")\n", nil)
g.skippedFields[inType] = append(g.skippedFields[inType], inMember.Name)
continue
}
switch inMemberType.Kind {
case types.Builtin:
if inMemberType == outMemberType {
sw.Do("out.$.name$ = in.$.name$\n", args)
} else {
sw.Do("out.$.name$ = $.outType|raw$(in.$.name$)\n", args)
}
case types.Map, types.Slice, types.Pointer:
if g.isDirectlyAssignable(inMemberType, outMemberType) {
sw.Do("out.$.name$ = in.$.name$\n", args)
continue
}
sw.Do("if in.$.name$ != nil {\n", args)
sw.Do("in, out := &in.$.name$, &out.$.name$\n", args)
g.generateFor(inMemberType, outMemberType, sw)
sw.Do("} else {\n", nil)
sw.Do("out.$.name$ = nil\n", args)
sw.Do("}\n", nil)
case types.Struct:
if g.isDirectlyAssignable(inMemberType, outMemberType) {
sw.Do("out.$.name$ = in.$.name$\n", args)
continue
}
if g.convertibleOnlyWithinPackage(inMemberType, outMemberType) {
sw.Do("if err := "+nameTmpl+"(&in.$.name$, &out.$.name$, s); err != nil {\n", args)
} else {
sw.Do("// TODO: Inefficient conversion - can we improve it?\n", nil)
sw.Do("if err := s.Convert(&in.$.name$, &out.$.name$, 0); err != nil {\n", args)
}
sw.Do("return err\n", nil)
sw.Do("}\n", nil)
case types.Alias:
if isDirectlyAssignable(inMemberType, outMemberType) {
if inMemberType == outMemberType {
sw.Do("out.$.name$ = in.$.name$\n", args)
} else {
sw.Do("out.$.name$ = $.outType|raw$(in.$.name$)\n", args)
}
} else {
if g.convertibleOnlyWithinPackage(inMemberType, outMemberType) {
sw.Do("if err := "+nameTmpl+"(&in.$.name$, &out.$.name$, s); err != nil {\n", args)
} else {
sw.Do("// TODO: Inefficient conversion - can we improve it?\n", nil)
sw.Do("if err := s.Convert(&in.$.name$, &out.$.name$, 0); err != nil {\n", args)
}
sw.Do("return err\n", nil)
sw.Do("}\n", nil)
}
default:
if g.convertibleOnlyWithinPackage(inMemberType, outMemberType) {
sw.Do("if err := "+nameTmpl+"(&in.$.name$, &out.$.name$, s); err != nil {\n", args)
} else {
sw.Do("// TODO: Inefficient conversion - can we improve it?\n", nil)
sw.Do("if err := s.Convert(&in.$.name$, &out.$.name$, 0); err != nil {\n", args)
}
sw.Do("return err\n", nil)
sw.Do("}\n", nil)
}
}
}
func (g *genConversion) doSlice(inType, outType *types.Type, sw *generator.SnippetWriter) {
sw.Do("*out = make($.|raw$, len(*in))\n", outType)
if inType.Elem == outType.Elem && inType.Elem.Kind == types.Builtin {
sw.Do("copy(*out, *in)\n", nil)
} else {
sw.Do("for i := range *in {\n", nil)
if isDirectlyAssignable(inType.Elem, outType.Elem) {
if inType.Elem == outType.Elem {
sw.Do("(*out)[i] = (*in)[i]\n", nil)
} else {
sw.Do("(*out)[i] = $.|raw$((*in)[i])\n", outType.Elem)
}
} else {
if function, ok := g.preexists(inType.Elem, outType.Elem); ok {
sw.Do("if err := $.|raw$(&(*in)[i], &(*out)[i], s); err != nil {\n", function)
} else if g.convertibleOnlyWithinPackage(inType.Elem, outType.Elem) {
sw.Do("if err := "+nameTmpl+"(&(*in)[i], &(*out)[i], s); err != nil {\n", argsFromType(inType.Elem, outType.Elem))
} else {
// TODO: This triggers on v1.ObjectMeta <-> api.ObjectMeta and
// similar because neither package is the target package, and
// we really don't know which package will have the conversion
// function defined. This fires on basically every object
// conversion outside of pkg/api/v1.
sw.Do("// TODO: Inefficient conversion - can we improve it?\n", nil)
sw.Do("if err := s.Convert(&(*in)[i], &(*out)[i], 0); err != nil {\n", nil)
}
sw.Do("return err\n", nil)
sw.Do("}\n", nil)
}
sw.Do("}\n", nil)
}
}
func (g *genConversion) doMap(inType, outType *types.Type, sw *generator.SnippetWriter) {
sw.Do("*out = make($.|raw$, len(*in))\n", outType)
if isDirectlyAssignable(inType.Key, outType.Key) {
sw.Do("for key, val := range *in {\n", nil)
if isDirectlyAssignable(inType.Elem, outType.Elem) {
if inType.Key == outType.Key {
sw.Do("(*out)[key] = ", nil)
} else {
sw.Do("(*out)[$.|raw$(key)] = ", outType.Key)
}
if inType.Elem == outType.Elem {
sw.Do("val\n", nil)
} else {
sw.Do("$.|raw$(val)\n", outType.Elem)
}
} else {
sw.Do("newVal := new($.|raw$)\n", outType.Elem)
if function, ok := g.preexists(inType.Elem, outType.Elem); ok {
sw.Do("if err := $.|raw$(&val, newVal, s); err != nil {\n", function)
} else if g.convertibleOnlyWithinPackage(inType.Elem, outType.Elem) {
sw.Do("if err := "+nameTmpl+"(&val, newVal, s); err != nil {\n", argsFromType(inType.Elem, outType.Elem))
} else {
sw.Do("// TODO: Inefficient conversion - can we improve it?\n", nil)
sw.Do("if err := s.Convert(&val, newVal, 0); err != nil {\n", nil)
}
sw.Do("return err\n", nil)
sw.Do("}\n", nil)
if inType.Key == outType.Key {
sw.Do("(*out)[key] = *newVal\n", nil)
} else {
sw.Do("(*out)[$.|raw$(key)] = *newVal\n", outType.Key)
}
}
} else {
// TODO: Implement it when necessary.
sw.Do("for range *in {\n", nil)
sw.Do("// FIXME: Converting unassignable keys unsupported $.|raw$\n", inType.Key)
}
sw.Do("}\n", nil)
}
func (g *genDeepCopy) doSlice(t *types.Type, sw *generator.SnippetWriter) {
sw.Do("*out = make($.|raw$, len(*in))\n", t)
if t.Elem.Kind == types.Builtin {
sw.Do("copy(*out, *in)\n", nil)
} else {
sw.Do("for i := range *in {\n", nil)
if hasDeepCopyMethod(t.Elem) {
sw.Do("(*out)[i] = (*in)[i].DeepCopy()\n", nil)
} else if t.Elem.IsAssignable() {
sw.Do("(*out)[i] = (*in)[i]\n", nil)
} else if g.copyableAndInBounds(t.Elem) {
sw.Do("if err := $.type|dcFnName$(&(*in)[i], &(*out)[i], c); err != nil {\n", argsFromType(t.Elem))
sw.Do("return err\n", nil)
sw.Do("}\n", nil)
} else {
sw.Do("if newVal, err := c.DeepCopy(&(*in)[i]); err != nil {\n", nil)
sw.Do("return err\n", nil)
sw.Do("} else {\n", nil)
sw.Do("(*out)[i] = *newVal.(*$.|raw$)\n", t.Elem)
sw.Do("}\n", nil)
}
sw.Do("}\n", nil)
}
}
func (g *genDeepCopy) doStruct(t *types.Type, sw *generator.SnippetWriter) {
if len(t.Members) == 0 {
// at least do something with in/out to avoid "declared and not used" errors
sw.Do("_ = in\n_ = out\n", nil)
}
for _, m := range t.Members {
t := m.Type
if t.Kind == types.Alias {
copied := *t.Underlying
copied.Name = t.Name
t = &copied
}
args := generator.Args{
"type": t,
"name": m.Name,
}
switch t.Kind {
case types.Builtin:
sw.Do("out.$.name$ = in.$.name$\n", args)
case types.Map, types.Slice, types.Pointer:
sw.Do("if in.$.name$ != nil {\n", args)
sw.Do("in, out := &in.$.name$, &out.$.name$\n", args)
g.generateFor(t, sw)
sw.Do("} else {\n", nil)
sw.Do("out.$.name$ = nil\n", args)
sw.Do("}\n", nil)
case types.Struct:
if hasDeepCopyMethod(t) {
sw.Do("out.$.name$ = in.$.name$.DeepCopy()\n", args)
} else if t.IsAssignable() {
sw.Do("out.$.name$ = in.$.name$\n", args)
} else if g.copyableAndInBounds(t) {
sw.Do("if err := $.type|dcFnName$(&in.$.name$, &out.$.name$, c); err != nil {\n", args)
sw.Do("return err\n", nil)
sw.Do("}\n", nil)
} else {
sw.Do("if newVal, err := c.DeepCopy(&in.$.name$); err != nil {\n", args)
sw.Do("return err\n", nil)
sw.Do("} else {\n", nil)
sw.Do("out.$.name$ = *newVal.(*$.type|raw$)\n", args)
sw.Do("}\n", nil)
}
default:
sw.Do("if in.$.name$ == nil {\n", args)
sw.Do("out.$.name$ = nil\n", args)
sw.Do("} else if newVal, err := c.DeepCopy(&in.$.name$); err != nil {\n", args)
sw.Do("return err\n", nil)
sw.Do("} else {\n", nil)
sw.Do("out.$.name$ = *newVal.(*$.type|raw$)\n", args)
sw.Do("}\n", nil)
}
}
}
func (g *genDeepCopy) doStruct(t *types.Type, sw *generator.SnippetWriter) {
if hasDeepCopyMethod(t) {
sw.Do("*out = in.DeepCopy()\n", nil)
return
}
// Simple copy covers a lot of cases.
sw.Do("*out = *in\n", nil)
// Now fix-up fields as needed.
for _, m := range t.Members {
t := m.Type
hasMethod := hasDeepCopyMethod(t)
if t.Kind == types.Alias {
copied := *t.Underlying
copied.Name = t.Name
t = &copied
}
args := generator.Args{
"type": t,
"kind": t.Kind,
"name": m.Name,
}
switch t.Kind {
case types.Builtin:
if hasMethod {
sw.Do("out.$.name$ = in.$.name$.DeepCopy()\n", args)
}
case types.Map, types.Slice, types.Pointer:
if hasMethod {
sw.Do("if in.$.name$ != nil {\n", args)
sw.Do("out.$.name$ = in.$.name$.DeepCopy()\n", args)
sw.Do("}\n", nil)
} else {
// Fixup non-nil reference-sematic types.
sw.Do("if in.$.name$ != nil {\n", args)
sw.Do("in, out := &in.$.name$, &out.$.name$\n", args)
g.generateFor(t, sw)
sw.Do("}\n", nil)
}
case types.Struct:
if hasMethod {
sw.Do("out.$.name$ = in.$.name$.DeepCopy()\n", args)
} else if t.IsAssignable() {
// Nothing else needed.
} else if g.copyableAndInBounds(t) {
// Not assignable but should have a deepcopy function.
// TODO: do a topological sort of packages and ensure that this works, else inline it.
sw.Do("if err := $.type|dcFnName$(&in.$.name$, &out.$.name$, c); err != nil {\n", args)
sw.Do("return err\n", nil)
sw.Do("}\n", nil)
} else {
// Fall back on the slow-path and hope it works.
// TODO: don't depend on kubernetes code for this
sw.Do("if newVal, err := c.DeepCopy(&in.$.name$); err != nil {\n", args)
sw.Do("return err\n", nil)
sw.Do("} else {\n", nil)
sw.Do("out.$.name$ = *newVal.(*$.type|raw$)\n", args)
sw.Do("}\n", nil)
}
default:
// Interfaces, Arrays, and other Kinds we don't understand.
sw.Do("// in.$.name$ is kind '$.kind$'\n", args)
if hasMethod {
sw.Do("if in.$.name$ != nil {\n", args)
sw.Do("out.$.name$ = in.$.name$.DeepCopy()\n", args)
sw.Do("}\n", args)
} else {
// TODO: don't depend on kubernetes code for this
sw.Do("if in.$.name$ != nil {\n", args)
sw.Do("if newVal, err := c.DeepCopy(&in.$.name$); err != nil {\n", args)
sw.Do("return err\n", nil)
sw.Do("} else {\n", nil)
sw.Do("out.$.name$ = *newVal.(*$.type|raw$)\n", args)
sw.Do("}\n", nil)
sw.Do("}\n", nil)
}
}
}
}
func (g *genDeepCopy) doUnknown(t *types.Type, sw *generator.SnippetWriter) {
sw.Do("// FIXME: Type $.|raw$ is unsupported.\n", t)
}
func (b bodyGen) doStruct(sw *generator.SnippetWriter) error {
if len(b.t.Name.Name) == 0 {
return nil
}
if namer.IsPrivateGoName(b.t.Name.Name) {
return nil
}
var alias *types.Type
var fields []protoField
options := []string{}
allOptions := types.ExtractCommentTags("+", b.t.CommentLines)
for k, v := range allOptions {
switch {
case strings.HasPrefix(k, "protobuf.options."):
key := strings.TrimPrefix(k, "protobuf.options.")
switch key {
case "marshal":
if v[0] == "false" {
if !b.omitGogo {
options = append(options,
"(gogoproto.marshaler) = false",
"(gogoproto.unmarshaler) = false",
"(gogoproto.sizer) = false",
)
}
}
default:
if !b.omitGogo || !strings.HasPrefix(key, "(gogoproto.") {
if key == "(gogoproto.goproto_stringer)" && v[0] == "false" {
options = append(options, "(gogoproto.stringer) = false")
}
options = append(options, fmt.Sprintf("%s = %s", key, v[0]))
}
}
// protobuf.as allows a type to have the same message contents as another Go type
case k == "protobuf.as":
fields = nil
if alias = b.locator.GoTypeForName(types.Name{Name: v[0]}); alias == nil {
return fmt.Errorf("type %v references alias %q which does not exist", b.t, v[0])
}
// protobuf.embed instructs the generator to use the named type in this package
// as an embedded message.
case k == "protobuf.embed":
fields = []protoField{
{
Tag: 1,
Name: v[0],
Type: &types.Type{
Name: types.Name{
Name: v[0],
Package: b.localPackage.Package,
Path: b.localPackage.Path,
},
},
},
}
}
}
if alias == nil {
alias = b.t
}
// If we don't explicitly embed anything, generate fields by traversing fields.
if fields == nil {
memberFields, err := membersToFields(b.locator, alias, b.localPackage, b.omitFieldTypes)
if err != nil {
return fmt.Errorf("type %v cannot be converted to protobuf: %v", b.t, err)
}
fields = memberFields
}
out := sw.Out()
genComment(out, b.t.CommentLines, "")
sw.Do(`message $.Name.Name$ {
`, b.t)
if len(options) > 0 {
sort.Sort(sort.StringSlice(options))
for _, s := range options {
fmt.Fprintf(out, " option %s;\n", s)
}
fmt.Fprintln(out)
}
for i, field := range fields {
genComment(out, field.CommentLines, " ")
fmt.Fprintf(out, " ")
switch {
case field.Map:
case field.Repeated:
fmt.Fprintf(out, "repeated ")
case field.Required:
fmt.Fprintf(out, "required ")
default:
fmt.Fprintf(out, "optional ")
}
sw.Do(`$.Type|local$ $.Name$ = $.Tag$`, field)
if len(field.Extras) > 0 {
extras := []string{}
for k, v := range field.Extras {
if b.omitGogo && strings.HasPrefix(k, "(gogoproto.") {
continue
}
extras = append(extras, fmt.Sprintf("%s = %s", k, v))
}
sort.Sort(sort.StringSlice(extras))
if len(extras) > 0 {
fmt.Fprintf(out, " [")
fmt.Fprint(out, strings.Join(extras, ", "))
fmt.Fprintf(out, "]")
}
}
fmt.Fprintf(out, ";\n")
if i != len(fields)-1 {
fmt.Fprintf(out, "\n")
}
}
fmt.Fprintf(out, "}\n\n")
return nil
}