fix: allow for an optional semicolon where there is an optional comma in parseOptionValue (protobufjs#1571)

* allow for an optional semicolon where there is an optional comma in parseOptionValue

* set allowShortCircuit to true to prevent no-unused-expressions error

* add test for semicolon

Co-authored-by: Alexander Fenster <fenster@google.com>

Author: jeffory-orrok

config/eslint.json

@@ -72,7 +72,7 @@
         "no-self-compare": 1,
         "no-throw-literal": 1,
         "no-unmodified-loop-condition": 1,
-        "no-unused-expressions": 1,
+        "no-unused-expressions": ["error", { "allowShortCircuit": true }],
         "no-useless-call": 1,
         "no-useless-concat": 1,
         "no-useless-escape": 1,

src/parse.js

@@ -611,7 +611,7 @@ function parse(source, root, options) {
                 if (prevValue)
                     value = [].concat(prevValue).concat(value);
                 result[propName] = value;
-                skip(",", true);
+                skip(",", true) || skip(";", true);
             }
             return result;
         }

tests/comp_options-textformat.js

@@ -15,6 +15,7 @@ message Test {\
   string value = 1 [(my_options) = { a: \"foo\" b: \"bar\" }];\
   string value2 = 2 [(my_options) = { a: \"foo\" b { c: \"bar\" } }];\
   string value3 = 3 [(my_options) = { a: \"foo\", b: \"bar\" }];\
+  string value4 = 4 [(my_options) = { a: \"foo\"; b: \"bar\" }];\
 }";
 
 tape.test("options in textformat", function(test) {
@@ -23,5 +24,6 @@ tape.test("options in textformat", function(test) {
     test.same(Test.fields.value.options, { "(my_options).a": "foo", "(my_options).b": "bar" }, "should parse correctly");
     test.same(Test.fields.value2.options, { "(my_options).a": "foo", "(my_options).b.c": "bar" }, "should parse correctly when nested");
     test.same(Test.fields.value3.options, { "(my_options).a": "foo", "(my_options).b": "bar" }, "should parse correctly when comma-separated");
+    test.same(Test.fields.value4.options, { "(my_options).a": "foo", "(my_options).b": "bar" }, "should parse correctly when semicolon-separated");
     test.end();
 });