Chore: Again cherry pick amino snake case and comments

tm2/pkg/amino/genproto/comments_test.go

@@ -0,0 +1,61 @@
+package genproto
+
+import (
+	"path"
+	"testing"
+
+	"github.com/gnolang/gno/tm2/pkg/amino"
+	"github.com/jaekwon/testify/assert"
+)
+
+// message comment
+type TestMessageName struct {
+	// field comment 1
+	FieldName1 string
+	// field comment 2
+	FieldName2 []uint64
+}
+
+// message comment 2
+type TestMessageName2 struct {
+	// another field comment
+	FieldName string
+}
+
+func TestComments(t *testing.T) {
+	pkg := amino.RegisterPackage(
+		amino.NewPackage(
+			"github.com/gnolang/gno/tm2/pkg/amino/genproto",
+			"amino_test",
+			amino.GetCallersDirname(),
+		).WithTypes(
+			&TestMessageName{},
+			&TestMessageName2{},
+		// Add comments from this same source file.
+		).WithComments(path.Join(amino.GetCallersDirname(), "comments_test.go")))
+
+	p3c := NewP3Context()
+	p3c.RegisterPackage(pkg)
+	p3c.ValidateBasic()
+	p3doc := p3c.GenerateProto3SchemaForTypes(pkg, pkg.ReflectTypes()...)
+	proto3Schema := p3doc.Print()
+	assert.Equal(t, proto3Schema, `syntax = "proto3";
+package amino_test;
+
+option go_package = "github.com/gnolang/gno/tm2/pkg/amino/genproto/pb";
+
+// messages
+// message comment
+message TestMessageName {
+	// field comment 1
+	string field_name1 = 1;
+	// field comment 2
+	repeated uint64 field_name2 = 2;
+}
+
+// message comment 2
+message TestMessageName2 {
+	// another field comment
+	string field_name = 1;
+}`)
+}

tm2/pkg/amino/genproto/genproto.go

@@ -16,6 +16,7 @@ import (
 	"time"
 
 	"github.com/gnolang/gno/tm2/pkg/amino"
+	"github.com/gnolang/gno/tm2/pkg/amino/genproto/stringutil"
 	"github.com/gnolang/gno/tm2/pkg/amino/pkg"
 )
 
@@ -191,6 +192,13 @@ func (p3c *P3Context) GenerateProto3MessagePartial(p3doc *P3Doc, rt reflect.Type
 
 	p3msg.Name = info.Name // not rinfo.
 
+	var fieldComments map[string]string
+	if pkgType, ok := rinfo.Package.GetType(rt); ok {
+		p3msg.Comment = pkgType.Comment
+		// We will check for optional field comments below.
+		fieldComments = pkgType.FieldComments
+	}
+
 	// Append to p3msg.Fields, fields of the struct.
 	for _, field := range rsfields { // rinfo.
 		fp3, fp3IsRepeated, implicit := typeToP3Type(info.Package, field.TypeInfo, field.FieldOptions)
@@ -206,9 +214,12 @@ func (p3c *P3Context) GenerateProto3MessagePartial(p3doc *P3Doc, rt reflect.Type
 		p3Field := P3Field{
 			Repeated: fp3IsRepeated,
 			Type:     fp3,
-			Name:     field.Name,
+			Name:     stringutil.ToLowerSnakeCase(field.Name),
 			Number:   field.FieldOptions.BinFieldNum,
 		}
+		if fieldComments != nil {
+			p3Field.Comment = fieldComments[field.Name]
+		}
 		p3msg.Fields = append(p3msg.Fields, p3Field)
 	}
 

tm2/pkg/amino/genproto/genproto_test.go

@@ -15,9 +15,9 @@ func TestBasic(t *testing.T) {
 	obj := sm1.StructSM{}
 	p3message := p3c.GenerateProto3MessagePartial(&p3doc, reflect.TypeOf(obj))
 	assert.Equal(t, p3message.Print(), `message StructSM {
-	sint64 FieldA = 1;
-	string FieldB = 2;
-	submodule2.StructSM2 FieldC = 3;
+	sint64 field_a = 1;
+	string field_b = 2;
+	submodule2.StructSM2 field_c = 3;
 }
 `)
 
@@ -38,8 +38,8 @@ import "github.com/gnolang/gno/tm2/pkg/amino/genproto/example/submodule2/submodu
 
 // messages
 message StructSM {
-	sint64 FieldA = 1;
-	string FieldB = 2;
-	submodule2.StructSM2 FieldC = 3;
+	sint64 field_a = 1;
+	string field_b = 2;
+	submodule2.StructSM2 field_c = 3;
 }`)
 }