add default feature resolution at the end

Author: sofisl

src/object.js

@@ -7,6 +7,10 @@ var util = require("./util");
 
 var Root; // cyclic
 
+var editions2023Defaults = {enum_type: "OPEN", field_presence: "EXPLICIT", json_format: "ALLOW", message_encoding: "LENGTH_PREFIXED", repeated_field_encoding: "PACKED", utf8_validation: "VERIFY"};
+var proto2Defaults = {enum_type: "CLOSED", field_presence: "EXPLICIT", json_format: "LEGACY_BEST_EFFORT", message_encoding: "LENGTH_PREFIXED", repeated_field_encoding: "EXPANDED", utf8_validation: "NONE"};
+var proto3Defaults = {enum_type: "OPEN", field_presence: "IMPLICIT", json_format: "ALLOW", message_encoding: "LENGTH_PREFIXED", repeated_field_encoding: "PACKED", utf8_validation: "VERIFY"};
+
 /**
  * Constructs a new reflection object instance.
  * @classdesc Base class of all reflection objects.
@@ -168,18 +172,30 @@ ReflectionObject.prototype.resolve = function resolve() {
  * @returns {undefined}
  */
 ReflectionObject.prototype._resolveFeatures = function _resolveFeatures() {
+    var defaults = {};
+
+    if (this.root.getOption('syntax') === 'proto2') {
+        defaults = Object.assign({}, proto2Defaults);
+    } else if (this.root.getOption('syntax') === 'proto3') {
+        defaults = Object.assign({}, proto3Defaults)
+    } else if (this.root.getOption('edition') === '2023') {
+        defaults = Object.assign({}, editions2023Defaults);
+    }
+
     if (this.parent) {
         // This is an annoying workaround since we can't use the spread operator
         // (Breaks the bundler and eslint)
         // If we don't create a shallow copy, we end up also altering the parent's
         // features
-        var parentFeatures = Object.assign({}, this.parent._proto_features);
-        this._features = Object.assign(parentFeatures, this._proto_features || {});
+        var parentFeaturesMerged = Object.assign(defaults, this.parent._proto_features);
+        this._features = Object.assign(parentFeaturesMerged, this._proto_features || {});
+        this._proto_features = this._features;
         this.parent._resolveFeatures();
     } else {
-        this._features = Object.assign({}, this._proto_features);
+        this._features = Object.assign(defaults, this._proto_features || {});
     }
     this._proto_features = this._features;
+
 };
 
 /**

src/parse.js

@@ -27,10 +27,6 @@ var base10Re    = /^[1-9][0-9]*$/,
     nameRe      = /^[a-zA-Z_][a-zA-Z_0-9]*$/,
     typeRefRe   = /^(?:\.?[a-zA-Z_][a-zA-Z_0-9]*)(?:\.[a-zA-Z_][a-zA-Z_0-9]*)*$/;
 
-var editions2023Defaults = {features: {enum_type: "OPEN", field_presence: "EXPLICIT", json_format: "ALLOW", message_encoding: "LENGTH_PREFIXED", repeated_field_encoding: "PACKED", utf8_validation: "VERIFY"}};
-var proto2Defaults = {features: {enum_type: "CLOSED", field_presence: "EXPLICIT", json_format: "LEGACY_BEST_EFFORT", message_encoding: "LENGTH_PREFIXED", repeated_field_encoding: "EXPANDED", utf8_validation: "NONE"}};
-var proto3Defaults = {features: {enum_type: "OPEN", field_presence: "IMPLICIT", json_format: "ALLOW", message_encoding: "LENGTH_PREFIXED", repeated_field_encoding: "PACKED", utf8_validation: "VERIFY"}};
-
 /**
  * Result object returned from {@link parse}.
  * @interface IParserResult
@@ -278,16 +274,6 @@ function parse(source, root, options) {
         // Otherwise the meaning is ambiguous between proto2 and proto3
         root.setOption("syntax", syntax);
 
-        if (isProto3) {
-            for (var proto3Key of Object.keys(proto3Defaults)) {
-                setParsedOption(root, proto3Key, proto3Defaults[proto3Key]);
-            }
-        } else {
-            for (var proto2Key of Object.keys(proto2Defaults)) {
-                setParsedOption(root, proto2Key, proto2Defaults[proto2Key]);
-            }
-        }
-
         skip(";");
     }
 
@@ -302,9 +288,6 @@ function parse(source, root, options) {
 
         root.setOption("edition", edition);
 
-        for (var key of Object.keys(editions2023Defaults)) {
-            setParsedOption(root, key, editions2023Defaults[key]);
-        }
         skip(";");
     }
 

tests/comp_options.js

@@ -30,7 +30,7 @@ message Message {
 tape.test("complex options", function (test) {
   var root = protobuf.parse(proto).root;
 
-  test.deepEqual(root.parsedOptions[1], {
+  test.deepEqual(root.parsedOptions[0], {
     "(grpc.gateway.protoc_gen_openapiv2.options.openapiv2_swagger)": {
       info: {
         title: "Some info",

tests/feature_resolution_editions.js

@@ -193,7 +193,7 @@ service MyService {
     };
 }
 `
-tape.test("feautre resolution defaults", function(test) {
+tape.test("feature resolution defaults", function(test) {
     var rootEditions = protobuf.parse(protoEditions2023).root;
     rootEditions.resolveAll();
     test.same(rootEditions._features, editions2023Defaults);