glideapps · schani · Sep 6, 2026 · Sep 6, 2026 · Sep 6, 2026
diff --git a/CLAUDE.md b/CLAUDE.md
@@ -41,6 +41,7 @@ Any change that affects generated output **must** be covered by a JSON or JSON S
 
 - JSON inputs live in `test/inputs/json/`. `priority/` and `samples/` form the default input set; `misc/` is omitted under `QUICKTEST` and for languages with `skipMiscJSON`. Per-language `skipJSON` and `includeJSON` settings can further restrict inputs.
 - JSON Schema inputs live in `test/inputs/schema/`. A `*.schema` can have a same-basename `.json` sample and numbered `.N.json` samples. Numbered `.N.fail.<feature>.json` files are expected failures for languages that declare that feature; `.N.fail.json` files apply regardless of features. An expected-failure sample must make the generated program exit nonzero.
+- `test/inputs/json/priority/keywords.json`, `test/inputs/schema/keyword-enum.schema`, and `test/inputs/schema/keyword-unions.schema` are generated by `test/make-keyword-tests.sh` from `test/keywords.txt`. Never edit them directly: add the keyword to `test/keywords.txt`, optionally followed by a tab and a JSON value for the JSON sample, then regenerate.
 - New schema fixture tests should have at least one positive and one negative test case unless there is a compelling reason not to.
 - Per-language configuration—input filters, renderer options, and `features`—lives in `test/languages.ts`.
 - Fixtures and their filter names are registered in `test/fixtures.ts`; driver programs live in `test/fixtures/<language>/`.

diff --git a/packages/quicktype-core/src/language/CSharp/CSharpRenderer.ts b/packages/quicktype-core/src/language/CSharp/CSharpRenderer.ts
@@ -40,6 +40,16 @@ import {
     noFollow,
 } from "./utils.js";
 
+const objectMemberNames = [
+    "ToString",
+    "GetHashCode",
+    "Finalize",
+    "Equals",
+    "GetType",
+    "MemberwiseClone",
+    "ReferenceEquals",
+];
+
 export class CSharpRenderer extends ConvenienceRenderer {
     public constructor(
         targetLanguage: TargetLanguage,
@@ -73,13 +83,7 @@ export class CSharpRenderer extends ConvenienceRenderer {
         return {
             names: [
                 classNamed,
-                "ToString",
-                "GetHashCode",
-                "Finalize",
-                "Equals",
-                "GetType",
-                "MemberwiseClone",
-                "ReferenceEquals",
+                ...objectMemberNames,
                 ...(this._csOptions.useRecords
                     ? ["Clone", "EqualityContract", "PrintMembers"]
                     : []),
@@ -92,7 +96,10 @@ export class CSharpRenderer extends ConvenienceRenderer {
         _: UnionType,
         unionNamed: Name,
     ): ForbiddenWordsInfo {
-        return { names: [unionNamed], includeGlobalForbidden: true };
+        return {
+            names: [unionNamed, ...objectMemberNames],
+            includeGlobalForbidden: true,
+        };
     }
 
     protected makeNamedTypeNamer(): Namer {

diff --git a/test/inputs/json/priority/keywords.json b/test/inputs/json/priority/keywords.json
@@ -61,19 +61,19 @@
       "CultureInfo": { "CultureInfo": 123 },
       "date": { "date": 123 },
       "date_parse_handling": { "date_parse_handling": 123 },
+      "DateFormatter": { "DateFormatter": 123 },
       "DateOnly": { "DateOnly": 123 },
       "DateOnlyConverter": { "DateOnlyConverter": 123 },
+      "dummy": 123
+    },
+  "obj2": {
       "DateTime": { "DateTime": "2001-02-03T04:05:06Z" },
-      "DateFormatter": { "DateFormatter": 123 },
       "DateTimeStyles": { "DateTimeStyles": 123 },
       "debugger": { "debugger": 123 },
       "decimal": { "decimal": 123 },
       "declare": { "declare": 123 },
       "decltype": { "decltype": 123 },
       "decode_string": { "decode_string": 123 },
-      "dummy": 123
-    },
-  "obj2": {
       "def": { "def": 123 },
       "default": { "default": 123 },
       "defer": { "defer": 123 },
@@ -89,11 +89,11 @@
       "dynamic": { "dynamic": 123 },
       "dynamic_cast": { "dynamic_cast": 123 },
       "elif": { "elif": 123 },
-      "equalityContract": { "equalityContract": 123 },
       "else": { "else": 123 },
       "encode_quick_type": { "encode_quick_type": 123 },
       "enum": { "enum": 123 },
       "EnumValues": { "EnumValues": ["ready", "done", "ready", "done", "ready", "done", "ready", "done", "ready", "done"] },
+      "equalityContract": { "equalityContract": 123 },
       "event": { "event": 123 },
       "except": { "except": 123 },
       "exception": { "exception": 123 },
@@ -131,6 +131,9 @@
       "IMP": { "IMP": 123 },
       "implements": { "implements": 123 },
       "implicit": { "implicit": 123 },
+      "dummy": 123
+    },
+  "obj3": {
       "import": { "import": 123 },
       "in": { "in": 123 },
       "indirect": { "indirect": 123 },
@@ -142,26 +145,26 @@
       "int": { "int": 123 },
       "interface": { "interface": 123 },
       "internal": { "internal": 123 },
-      "dummy": 123
-    },
-  "obj3": {
+      "IsoDateTimeOffsetConverter": { "IsoDateTimeOffsetConverter": 123 },
       "iterable": { "iterable": 123 },
       "is": { "is": 123 },
-      "IsoDateTimeOffsetConverter": { "IsoDateTimeOffsetConverter": 123 },
       "jdec": { "jdec": 123 },
       "jenc": { "jenc": 123 },
       "jpipe": { "jpipe": 123 },
       "json": { "json": 123 },
-      "JSONAny": { "JSONAny": null },
-      "JSONCodingKey": { "JSONCodingKey": 123 },
-      "JSONDecoder": { "JSONDecoder": 123 },
-      "JSONEncoder": { "JSONEncoder": 123 },
-      "JSONNull": { "JSONNull": 123 },
       "json_converter": { "json_converter": 123 },
       "json_serializer": { "json_serializer": 123 },
       "json_token": { "json_token": 123 },
       "json_writer": { "json_writer": 123 },
+      "JSONAny": { "JSONAny": null },
+      "JSONCodingKey": { "JSONCodingKey": 123 },
+      "JSONDecoder": { "JSONDecoder": 123 },
+      "JSONEncoder": { "JSONEncoder": 123 },
       "JsonException": { "JsonException": 123 },
+      "JsonGenerator": { "JsonGenerator": 123 },
+      "JsonNode": { "JsonNode": 123 },
+      "JSONNull": { "JSONNull": 123 },
+      "JsonParser": { "JsonParser": 123 },
       "JsonReader": { "JsonReader": 123 },
       "JsonTokenType": { "JsonTokenType": 123 },
       "lambda": { "lambda": 123 },
@@ -180,7 +183,6 @@
       "native": { "native": 123 },
       "new": { "new": 123 },
       "newtonsoft": { "newtonsoft": 123 },
-      "NSError": { "NSError": 123 },
       "nil": { "nil": 123 },
       "NO": { "NO": 123 },
       "noexcept": { "noexcept": 123 },
@@ -192,20 +194,17 @@
       "noSuchMethod": { "noSuchMethod": 123 },
       "not": { "not": 123 },
       "not_eq": { "not_eq": 123 },
+      "NSError": { "NSError": 123 },
       "NSString": { "NSString": 123 },
       "NULL": { "NULL": 123 },
       "null": { "null": 123 },
+      "dummy": 123
+    },
+  "obj4": {
       "nullptr": { "nullptr": 123 },
       "number": { "number": 123 },
       "object": { "object": 123 },
-      "JsonGenerator": { "JsonGenerator": 123 },
-      "JsonNode": { "JsonNode": 123 },
-      "JsonParser": { "JsonParser": 123 },
       "ObjectMapper": { "ObjectMapper": 123 },
-      "SerializerProvider": { "SerializerProvider": 123 },
-      "SimpleModule": { "SimpleModule": 123 },
-      "StdDeserializer": { "StdDeserializer": 123 },
-      "StdSerializer": { "StdSerializer": 123 },
       "of": { "of": 123 },
       "oneway": { "oneway": 123 },
       "open": { "open": 123 },
@@ -229,9 +228,6 @@
       "protected": { "protected": 123 },
       "Protocol": { "Protocol": 123 },
       "protocol": { "protocol": 123 },
-      "dummy": 123
-    },
-  "obj4": {
       "public": { "public": 123 },
       "quicktype": { "quicktype": 123 },
       "raise": { "raise": 123 },
@@ -251,23 +247,30 @@
       "return": { "return": 123 },
       "right": { "right": 123 },
       "runtimeType": { "runtimeType": 123 },
-      "sbyte": { "sbyte": 123 },
       "s": { "s": 123 },
+      "sbyte": { "sbyte": 123 },
       "sealed": { "sealed": 123 },
       "SEL": { "SEL": 123 },
       "select": { "select": 123 },
       "Self": { "Self": 123 },
       "self": { "self": 123 },
       "serialize": { "serialize": 123 },
+      "SerializerProvider": { "SerializerProvider": 123 },
       "set": { "set": 123 },
       "short": { "short": 123 },
       "signed": { "signed": 123 },
+      "SimpleModule": { "SimpleModule": 123 },
       "sizeof": { "sizeof": 123 },
       "stackalloc": { "stackalloc": 123 },
       "Standards": { "Standards": 123 },
       "static": { "static": 123 },
       "static_assert": { "static_assert": 123 },
+      "dummy": 123
+    },
+  "obj5": {
       "static_cast": { "static_cast": 123 },
+      "StdDeserializer": { "StdDeserializer": 123 },
+      "StdSerializer": { "StdSerializer": 123 },
       "strictfp": { "strictfp": 123 },
       "string": { "string": 123 },
       "struct": { "struct": 123 },
@@ -283,10 +286,10 @@
       "thread_local": { "thread_local": 123 },
       "throw": { "throw": 123 },
       "throws": { "throws": 123 },
-      "to_json": { "to_json": 123 },
-      "top_level": { "top_level": 123 },
       "TimeOnly": { "TimeOnly": 123 },
       "TimeOnlyConverter": { "TimeOnlyConverter": 123 },
+      "to_json": { "to_json": 123 },
+      "top_level": { "top_level": 123 },
       "toString": { "toString": 123 },
       "transient": { "transient": 123 },
       "True": { "True": 123 },
@@ -303,10 +306,6 @@
       "ulong": { "ulong": 123 },
       "unchecked": { "unchecked": 123 },
       "undefined": { "undefined": 123 },
-      "dummy": 123
-    },
-  "obj5": {
-      "UUID": { "UUID": 123 },
       "union": { "union": 123 },
       "unowned": { "unowned": 123 },
       "unsafe": { "unsafe": 123 },
@@ -315,6 +314,7 @@
       "using": { "using": 123 },
       "Utf8JsonReader": { "Utf8JsonReader": 123 },
       "Utf8JsonWriter": { "Utf8JsonWriter": 123 },
+      "UUID": { "UUID": 123 },
       "var": { "var": 123 },
       "virtual": { "virtual": 123 },
       "void": { "void": 123 },