fix: new diag for async/generator on getter/setter

docs/errors/E0713.md

@@ -0,0 +1,36 @@
+# E0713: '*' keyword is not allowed on getters or setters
+
+Use of the '*' character, defining generator functions, is not allowed on getters or setters. 
+Getters and setters are synchronous operations and do not support the generator functionality.
+
+```javascript
+class C {
+  constructor() {
+    this._value = 0;
+  }
+
+  get *value() {
+    return this._value;
+  }
+  set *value(newValue) {
+    this._value = newValue;
+  }
+}
+```
+
+To fix this error define with a getter or setter, using regular function syntax.
+
+```javascript
+class C {
+  constructor() {
+    this._value = 0;
+  }
+
+  get value() {
+    return this._value;
+  }
+  set value(newValue) {
+    this._value = newValue;
+  }
+}
+```

docs/errors/E0714.md

@@ -0,0 +1,64 @@
+# E0714: 'async' keyword is not allowed on getters or setters
+
+Use of 'async' keyword, defining asynchronous functions, is not allowed on getters or setters.
+Getters and setters are synchronous operations and do not support the asynchronous functionality.
+
+
+```javascript
+class C {
+  constructor() {
+    this._value = 0;
+  }
+
+  async get value() {
+    return this._value;
+  }
+
+  async set value(newValue) {
+    this._value = newValue;
+  }
+}
+```
+
+To fix this error simply remove 'async' keyword from getters and setters, 
+so they can function properly as synchronous operations
+
+
+```javascript
+class C {
+  constructor() {
+    this._value = 0;
+  }
+
+  get value() {
+    return this._value;
+  }
+
+  set value(newValue) {
+    this._value = newValue;
+  }
+}
+```
+
+However, if you require asynchronous behavior within getters or setters, 
+you can achieve this by implementing separate asynchronous methods
+
+
+```javascript
+class C {
+  constructor() {
+    this._value = 0;
+  }
+
+  async getValueAsync() {
+    // Perform asynchronous operations here
+    return await asyncFuctnion();
+  }
+
+  async setValueAsync(newValue) {
+    // Perform asynchronous operations here
+    await asyncFuctnion();
+    this._value = newValue;
+  }
+}
+```

po/messages.pot

@@ -1929,6 +1929,14 @@ msgstr ""
 msgid "missing expression in placeholder within template literal"
 msgstr ""
 
+#: src/quick-lint-js/diag/diagnostic-metadata-generated.cpp
+msgid "'*' keyword is not allowed on getters or setters"
+msgstr ""
+
+#: src/quick-lint-js/diag/diagnostic-metadata-generated.cpp
+msgid "'async' keyword is not allowed on getters or setters"
+msgstr ""
+
 #: test/test-diagnostic-formatter.cpp
 #: test/test-vim-qflist-json-diag-reporter.cpp
 msgid "something happened"

src/quick-lint-js/diag/diagnostic-metadata-generated.cpp

@@ -5961,6 +5961,42 @@ const QLJS_CONSTINIT Diagnostic_Info all_diagnostic_infos[] = {
         },
       },
     },
+
+    // Diag_Class_Generator_On_Getter_Or_Setter
+    {
+      .code = 713,
+      .severity = Diagnostic_Severity::error,
+      .message_formats = {
+        QLJS_TRANSLATABLE("'*' keyword is not allowed on getters or setters"),
+        QLJS_TRANSLATABLE("'{0}' here"),
+      },
+      .message_args = {
+        {
+          Diagnostic_Message_Arg_Info(offsetof(Diag_Class_Generator_On_Getter_Or_Setter, generator_keyword), Diagnostic_Arg_Type::source_code_span),
+        },
+        {
+          Diagnostic_Message_Arg_Info(offsetof(Diag_Class_Generator_On_Getter_Or_Setter, getter_setter_keyword), Diagnostic_Arg_Type::source_code_span),
+        },
+      },
+    },
+
+    // Diag_Class_Async_On_Getter_Or_Setter
+    {
+      .code = 714,
+      .severity = Diagnostic_Severity::error,
+      .message_formats = {
+        QLJS_TRANSLATABLE("'async' keyword is not allowed on getters or setters"),
+        QLJS_TRANSLATABLE("'{0}' here"),
+      },
+      .message_args = {
+        {
+          Diagnostic_Message_Arg_Info(offsetof(Diag_Class_Async_On_Getter_Or_Setter, async_keyword), Diagnostic_Arg_Type::source_code_span),
+        },
+        {
+          Diagnostic_Message_Arg_Info(offsetof(Diag_Class_Async_On_Getter_Or_Setter, getter_setter_keyword), Diagnostic_Arg_Type::source_code_span),
+        },
+      },
+    },
 };
 }
 

src/quick-lint-js/diag/diagnostic-metadata-generated.h

@@ -412,10 +412,12 @@ namespace quick_lint_js {
   QLJS_DIAG_TYPE_NAME(Diag_Variable_Assigned_To_Self_Is_Noop) \
   QLJS_DIAG_TYPE_NAME(Diag_Xor_Used_As_Exponentiation) \
   QLJS_DIAG_TYPE_NAME(Diag_Expected_Expression_In_Template_Literal) \
+  QLJS_DIAG_TYPE_NAME(Diag_Class_Generator_On_Getter_Or_Setter) \
+  QLJS_DIAG_TYPE_NAME(Diag_Class_Async_On_Getter_Or_Setter) \
   /* END */
 // clang-format on
 
-inline constexpr int Diag_Type_Count = 401;
+inline constexpr int Diag_Type_Count = 403;
 
 extern const Diagnostic_Info all_diagnostic_infos[Diag_Type_Count];
 }

src/quick-lint-js/diag/diagnostic-types-2.h

@@ -3065,6 +3065,26 @@ struct Diag_Expected_Expression_In_Template_Literal {
                   ARG(placeholder))]]  //
   Source_Code_Span placeholder;
 };
+
+struct Diag_Class_Generator_On_Getter_Or_Setter {
+  [[qljs::diag("E0713", Diagnostic_Severity::error)]]  //
+  [[qljs::message("'*' keyword is not allowed on getters or setters",
+                  ARG(generator_keyword))]]                    //
+  [[qljs::message("'{0}' here", ARG(getter_setter_keyword))]]  //
+  Source_Code_Span method_start;
+  Source_Code_Span generator_keyword;
+  Source_Code_Span getter_setter_keyword;
+};
+
+struct Diag_Class_Async_On_Getter_Or_Setter {
+  [[qljs::diag("E0714", Diagnostic_Severity::error)]]  //
+  [[qljs::message("'async' keyword is not allowed on getters or setters",
+                  ARG(async_keyword))]]                        //
+  [[qljs::message("'{0}' here", ARG(getter_setter_keyword))]]  //
+  Source_Code_Span method_start;
+  Source_Code_Span async_keyword;
+  Source_Code_Span getter_setter_keyword;
+};
 }
 
 QLJS_WARNING_POP

src/quick-lint-js/fe/parse-class.cpp

@@ -981,6 +981,8 @@ void Parser::parse_and_visit_class_or_interface_member(
 
     void check_modifiers_for_method() {
       error_if_accessor_method();
+      error_if_generator_method();
+      error_if_async_method();
       error_if_readonly_method();
       error_if_async_or_generator_without_method_body();
       error_if_invalid_access_specifier();
@@ -1131,6 +1133,47 @@ void Parser::parse_and_visit_class_or_interface_member(
       }
     }
 
+    void error_if_generator_method() {
+      if (const Modifier *star_modifier = find_modifier(Token_Type::star)) {
+        Source_Code_Span method_start = p->peek().span();
+        if (const Modifier *get_modifier = find_modifier(Token_Type::kw_get)) {
+          p->diag_reporter_->report(Diag_Class_Generator_On_Getter_Or_Setter{
+              .method_start = method_start,
+              .generator_keyword = star_modifier->span,
+              .getter_setter_keyword = get_modifier->span,
+          });
+        } else if (const Modifier *set_modifier =
+                       find_modifier(Token_Type::kw_set)) {
+          p->diag_reporter_->report(Diag_Class_Generator_On_Getter_Or_Setter{
+              .method_start = method_start,
+              .generator_keyword = star_modifier->span,
+              .getter_setter_keyword = set_modifier->span,
+          });
+        }
+      }
+    }
+
+    void error_if_async_method() {
+      if (const Modifier *async_modifier =
+              find_modifier(Token_Type::kw_async)) {
+        Source_Code_Span method_start = p->peek().span();
+        if (const Modifier *get_modifier = find_modifier(Token_Type::kw_get)) {
+          p->diag_reporter_->report(Diag_Class_Async_On_Getter_Or_Setter{
+              .method_start = method_start,
+              .async_keyword = async_modifier->span,
+              .getter_setter_keyword = get_modifier->span,
+          });
+        } else if (const Modifier *set_modifier =
+                       find_modifier(Token_Type::kw_set)) {
+          p->diag_reporter_->report(Diag_Class_Async_On_Getter_Or_Setter{
+              .method_start = method_start,
+              .async_keyword = async_modifier->span,
+              .getter_setter_keyword = set_modifier->span,
+          });
+        }
+      }
+    }
+
     void error_if_readonly_method() {
       if (const Modifier *readonly_modifier =
               find_modifier(Token_Type::kw_readonly)) {

src/quick-lint-js/i18n/translation-table-generated.cpp

@@ -18,7 +18,8 @@ const Translation_Table translation_data = {
         {74, 87, 79, 56, 0, 59},             //
         {71, 80, 60, 58, 0, 52},             //
         {0, 0, 0, 0, 0, 28},                 //
-        {31, 56, 0, 32, 0, 63},              //
+        {0, 0, 0, 0, 0, 63},                 //
+        {31, 56, 0, 32, 0, 49},              //
         {0, 0, 0, 0, 0, 67},                 //
         {0, 0, 0, 70, 0, 26},                //
         {79, 25, 30, 63, 49593, 66},         //
@@ -40,7 +41,8 @@ const Translation_Table translation_data = {
         {0, 0, 0, 100, 0, 89},               //
         {0, 0, 0, 0, 0, 24},                 //
         {50, 77, 41, 27, 0, 60},             //
-        {70, 31, 69, 53, 0, 60},             //
+        {0, 0, 0, 0, 0, 60},                 //
+        {70, 31, 69, 53, 0, 53},             //
         {93, 15, 80, 68, 26, 69},            //
         {0, 0, 0, 0, 0, 43},                 //
         {0, 0, 0, 0, 0, 44},                 //
@@ -1773,6 +1775,7 @@ const Translation_Table translation_data = {
         u8"\"globals\" descriptor must be a boolean or an object\0"
         u8"\"globals\" must be an object\0"
         u8"'!' here treated as the TypeScript non-null assertion operator\0"
+        u8"'*' keyword is not allowed on getters or setters\0"
         u8"'**' operator cannot be used after unary '{1}' without parentheses\0"
         u8"',' should be ';' instead\0"
         u8"'.' is not allowed after generic arguments; write [\"{1}\"] instead\0"
@@ -1795,6 +1798,7 @@ const Translation_Table translation_data = {
         u8"'as const' located here\0"
         u8"'async export' is not allowed; write 'export async' instead\0"
         u8"'async static' is not allowed; write 'static async' instead\0"
+        u8"'async' keyword is not allowed on getters or setters\0"
         u8"'await' cannot be followed by an arrow function; use 'async' instead\0"
         u8"'await' is only allowed in async functions\0"
         u8"'declare class' cannot contain static block\0"

src/quick-lint-js/i18n/translation-table-generated.h

@@ -18,8 +18,8 @@ namespace quick_lint_js {
 using namespace std::literals::string_view_literals;
 
 constexpr std::uint32_t translation_table_locale_count = 5;
-constexpr std::uint16_t translation_table_mapping_table_size = 484;
-constexpr std::size_t translation_table_string_table_size = 78112;
+constexpr std::uint16_t translation_table_mapping_table_size = 486;
+constexpr std::size_t translation_table_string_table_size = 78214;
 constexpr std::size_t translation_table_locale_table_size = 35;
 
 QLJS_CONSTEVAL std::uint16_t translation_table_const_look_up(
@@ -33,6 +33,7 @@ QLJS_CONSTEVAL std::uint16_t translation_table_const_look_up(
           "\"globals\" descriptor must be a boolean or an object"sv,
           "\"globals\" must be an object"sv,
           "'!' here treated as the TypeScript non-null assertion operator"sv,
+          "'*' keyword is not allowed on getters or setters"sv,
           "'**' operator cannot be used after unary '{1}' without parentheses"sv,
           "',' should be ';' instead"sv,
           "'.' is not allowed after generic arguments; write [\"{1}\"] instead"sv,
@@ -55,6 +56,7 @@ QLJS_CONSTEVAL std::uint16_t translation_table_const_look_up(
           "'as const' located here"sv,
           "'async export' is not allowed; write 'export async' instead"sv,
           "'async static' is not allowed; write 'static async' instead"sv,
+          "'async' keyword is not allowed on getters or setters"sv,
           "'await' cannot be followed by an arrow function; use 'async' instead"sv,
           "'await' is only allowed in async functions"sv,
           "'declare class' cannot contain static block"sv,

src/quick-lint-js/i18n/translation-table-test-generated.h

@@ -27,7 +27,7 @@ struct Translated_String {
 };
 
 // clang-format off
-inline const Translated_String test_translation_table[483] = {
+inline const Translated_String test_translation_table[485] = {
     {
         "\"global-groups\" entries must be strings"_translatable,
         u8"\"global-groups\" entries must be strings",
@@ -105,6 +105,17 @@ inline const Translated_String test_translation_table[483] = {
             u8"'!' here treated as the TypeScript non-null assertion operator",
         },
     },
+    {
+        "'*' keyword is not allowed on getters or setters"_translatable,
+        u8"'*' keyword is not allowed on getters or setters",
+        {
+            u8"'*' keyword is not allowed on getters or setters",
+            u8"'*' keyword is not allowed on getters or setters",
+            u8"'*' keyword is not allowed on getters or setters",
+            u8"'*' keyword is not allowed on getters or setters",
+            u8"'*' keyword is not allowed on getters or setters",
+        },
+    },
     {
         "'**' operator cannot be used after unary '{1}' without parentheses"_translatable,
         u8"'**' operator cannot be used after unary '{1}' without parentheses",
@@ -347,6 +358,17 @@ inline const Translated_String test_translation_table[483] = {
             u8"'async static' is not allowed; write 'static async' instead",
         },
     },
+    {
+        "'async' keyword is not allowed on getters or setters"_translatable,
+        u8"'async' keyword is not allowed on getters or setters",
+        {
+            u8"'async' keyword is not allowed on getters or setters",
+            u8"'async' keyword is not allowed on getters or setters",
+            u8"'async' keyword is not allowed on getters or setters",
+            u8"'async' keyword is not allowed on getters or setters",
+            u8"'async' keyword is not allowed on getters or setters",
+        },
+    },
     {
         "'await' cannot be followed by an arrow function; use 'async' instead"_translatable,
         u8"'await' cannot be followed by an arrow function; use 'async' instead",