New analyzer snapshot.

pkg/analyzer/lib/src/generated/error.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 // This code was auto-generated, is not intended to be edited, and is subject to
 // significant change. Please see the README file for more information.
 
 library engine.error;
 
 import 'dart:collection';
@@ skipping 397 matching lines @@
 
   /**
    * 12.33 Argument Definition Test: It is a compile time error if <i>v</i> does not denote a formal
    * parameter.
    *
    * @param the name of the identifier in the argument definition test that is not a parameter
    */
   static const CompileTimeErrorCode ARGUMENT_DEFINITION_TEST_NON_PARAMETER = const CompileTimeErrorCode.con1('ARGUMENT_DEFINITION_TEST_NON_PARAMETER', 2, "'{0}' is not a parameter");
 
   /**
+   * ?? Asynchronous For-in: It is a compile-time error if an asynchronous for-in statement appears
+   * inside a synchronous function.
+   */
+  static const CompileTimeErrorCode ASYNC_FOR_IN_WRONG_CONTEXT = const CompileTimeErrorCode.con1('ASYNC_FOR_IN_WRONG_CONTEXT', 3, "The asynchronous for-in can only be used in a function marked with async or async*");
+
+  /**
+   * ??: It is a compile-time error if the function immediately enclosing a is not declared
+   * asynchronous.
+   */
+  static const CompileTimeErrorCode AWAIT_IN_WRONG_CONTEXT = const CompileTimeErrorCode.con1('AWAIT_IN_WRONG_CONTEXT', 4, "The await expression can only be used in a function marked as async or async*");
+
+  /**
    * 12.30 Identifier Reference: It is a compile-time error to use a built-in identifier other than
    * dynamic as a type annotation.
    */
-  static const CompileTimeErrorCode BUILT_IN_IDENTIFIER_AS_TYPE = const CompileTimeErrorCode.con1('BUILT_IN_IDENTIFIER_AS_TYPE', 3, "The built-in identifier '{0}' cannot be as a type");
+  static const CompileTimeErrorCode BUILT_IN_IDENTIFIER_AS_TYPE = const CompileTimeErrorCode.con1('BUILT_IN_IDENTIFIER_AS_TYPE', 5, "The built-in identifier '{0}' cannot be as a type");
 
   /**
    * 12.30 Identifier Reference: It is a compile-time error if a built-in identifier is used as the
    * declared name of a class, type parameter or type alias.
    */
-  static const CompileTimeErrorCode BUILT_IN_IDENTIFIER_AS_TYPE_NAME = const CompileTimeErrorCode.con1('BUILT_IN_IDENTIFIER_AS_TYPE_NAME', 4, "The built-in identifier '{0}' cannot be used as a type name");
+  static const CompileTimeErrorCode BUILT_IN_IDENTIFIER_AS_TYPE_NAME = const CompileTimeErrorCode.con1('BUILT_IN_IDENTIFIER_AS_TYPE_NAME', 6, "The built-in identifier '{0}' cannot be used as a type name");
 
   /**
    * 12.30 Identifier Reference: It is a compile-time error if a built-in identifier is used as the
    * declared name of a class, type parameter or type alias.
    */
-  static const CompileTimeErrorCode BUILT_IN_IDENTIFIER_AS_TYPEDEF_NAME = const CompileTimeErrorCode.con1('BUILT_IN_IDENTIFIER_AS_TYPEDEF_NAME', 5, "The built-in identifier '{0}' cannot be used as a type alias name");
+  static const CompileTimeErrorCode BUILT_IN_IDENTIFIER_AS_TYPEDEF_NAME = const CompileTimeErrorCode.con1('BUILT_IN_IDENTIFIER_AS_TYPEDEF_NAME', 7, "The built-in identifier '{0}' cannot be used as a type alias name");
 
   /**
    * 12.30 Identifier Reference: It is a compile-time error if a built-in identifier is used as the
    * declared name of a class, type parameter or type alias.
    */
-  static const CompileTimeErrorCode BUILT_IN_IDENTIFIER_AS_TYPE_PARAMETER_NAME = const CompileTimeErrorCode.con1('BUILT_IN_IDENTIFIER_AS_TYPE_PARAMETER_NAME', 6, "The built-in identifier '{0}' cannot be used as a type parameter name");
+  static const CompileTimeErrorCode BUILT_IN_IDENTIFIER_AS_TYPE_PARAMETER_NAME = const CompileTimeErrorCode.con1('BUILT_IN_IDENTIFIER_AS_TYPE_PARAMETER_NAME', 8, "The built-in identifier '{0}' cannot be used as a type parameter name");
 
   /**
    * 13.9 Switch: It is a compile-time error if the class <i>C</i> implements the operator
    * <i>==</i>.
    */
-  static const CompileTimeErrorCode CASE_EXPRESSION_TYPE_IMPLEMENTS_EQUALS = const CompileTimeErrorCode.con1('CASE_EXPRESSION_TYPE_IMPLEMENTS_EQUALS', 7, "The switch case expression type '{0}' cannot override the == operator");
+  static const CompileTimeErrorCode CASE_EXPRESSION_TYPE_IMPLEMENTS_EQUALS = const CompileTimeErrorCode.con1('CASE_EXPRESSION_TYPE_IMPLEMENTS_EQUALS', 9, "The switch case expression type '{0}' cannot override the == operator");
 
   /**
    * 12.1 Constants: It is a compile-time error if evaluation of a compile-time constant would raise
    * an exception.
    */
-  static const CompileTimeErrorCode COMPILE_TIME_CONSTANT_RAISES_EXCEPTION = const CompileTimeErrorCode.con1('COMPILE_TIME_CONSTANT_RAISES_EXCEPTION', 8, "");
+  static const CompileTimeErrorCode COMPILE_TIME_CONSTANT_RAISES_EXCEPTION = const CompileTimeErrorCode.con1('COMPILE_TIME_CONSTANT_RAISES_EXCEPTION', 10, "");
 
   /**
    * 7.2 Getters: It is a compile-time error if a class has both a getter and a method with the same
    * name. This restriction holds regardless of whether the getter is defined explicitly or
    * implicitly, or whether the getter or the method are inherited or not.
    */
-  static const CompileTimeErrorCode CONFLICTING_GETTER_AND_METHOD = const CompileTimeErrorCode.con1('CONFLICTING_GETTER_AND_METHOD', 9, "Class '{0}' cannot have both getter '{1}.{2}' and method with the same name");
+  static const CompileTimeErrorCode CONFLICTING_GETTER_AND_METHOD = const CompileTimeErrorCode.con1('CONFLICTING_GETTER_AND_METHOD', 11, "Class '{0}' cannot have both getter '{1}.{2}' and method with the same name");
 
   /**
    * 7.2 Getters: It is a compile-time error if a class has both a getter and a method with the same
    * name. This restriction holds regardless of whether the getter is defined explicitly or
    * implicitly, or whether the getter or the method are inherited or not.
    */
-  static const CompileTimeErrorCode CONFLICTING_METHOD_AND_GETTER = const CompileTimeErrorCode.con1('CONFLICTING_METHOD_AND_GETTER', 10, "Class '{0}' cannot have both method '{1}.{2}' and getter with the same name");
+  static const CompileTimeErrorCode CONFLICTING_METHOD_AND_GETTER = const CompileTimeErrorCode.con1('CONFLICTING_METHOD_AND_GETTER', 12, "Class '{0}' cannot have both method '{1}.{2}' and getter with the same name");
 
   /**
    * 7.6 Constructors: A constructor name always begins with the name of its immediately enclosing
    * class, and may optionally be followed by a dot and an identifier <i>id</i>. It is a
    * compile-time error if <i>id</i> is the name of a member declared in the immediately enclosing
    * class.
    */
-  static const CompileTimeErrorCode CONFLICTING_CONSTRUCTOR_NAME_AND_FIELD = const CompileTimeErrorCode.con1('CONFLICTING_CONSTRUCTOR_NAME_AND_FIELD', 11, "'{0}' cannot be used to name a constructor and a field in this class");
+  static const CompileTimeErrorCode CONFLICTING_CONSTRUCTOR_NAME_AND_FIELD = const CompileTimeErrorCode.con1('CONFLICTING_CONSTRUCTOR_NAME_AND_FIELD', 13, "'{0}' cannot be used to name a constructor and a field in this class");
 
   /**
    * 7.6 Constructors: A constructor name always begins with the name of its immediately enclosing
    * class, and may optionally be followed by a dot and an identifier <i>id</i>. It is a
    * compile-time error if <i>id</i> is the name of a member declared in the immediately enclosing
    * class.
    */
-  static const CompileTimeErrorCode CONFLICTING_CONSTRUCTOR_NAME_AND_METHOD = const CompileTimeErrorCode.con1('CONFLICTING_CONSTRUCTOR_NAME_AND_METHOD', 12, "'{0}' cannot be used to name a constructor and a method in this class");
+  static const CompileTimeErrorCode CONFLICTING_CONSTRUCTOR_NAME_AND_METHOD = const CompileTimeErrorCode.con1('CONFLICTING_CONSTRUCTOR_NAME_AND_METHOD', 14, "'{0}' cannot be used to name a constructor and a method in this class");
 
   /**
    * 7. Classes: It is a compile time error if a generic class declares a type variable with the
    * same name as the class or any of its members or constructors.
    */
-  static const CompileTimeErrorCode CONFLICTING_TYPE_VARIABLE_AND_CLASS = const CompileTimeErrorCode.con1('CONFLICTING_TYPE_VARIABLE_AND_CLASS', 13, "'{0}' cannot be used to name a type varaible in a class with the same name");
+  static const CompileTimeErrorCode CONFLICTING_TYPE_VARIABLE_AND_CLASS = const CompileTimeErrorCode.con1('CONFLICTING_TYPE_VARIABLE_AND_CLASS', 15, "'{0}' cannot be used to name a type varaible in a class with the same name");
 
   /**
    * 7. Classes: It is a compile time error if a generic class declares a type variable with the
    * same name as the class or any of its members or constructors.
    */
-  static const CompileTimeErrorCode CONFLICTING_TYPE_VARIABLE_AND_MEMBER = const CompileTimeErrorCode.con1('CONFLICTING_TYPE_VARIABLE_AND_MEMBER', 14, "'{0}' cannot be used to name a type varaible and member in this class");
+  static const CompileTimeErrorCode CONFLICTING_TYPE_VARIABLE_AND_MEMBER = const CompileTimeErrorCode.con1('CONFLICTING_TYPE_VARIABLE_AND_MEMBER', 16, "'{0}' cannot be used to name a type varaible and member in this class");
 
   /**
    * 12.11.2 Const: It is a compile-time error if evaluation of a constant object results in an
    * uncaught exception being thrown.
    */
-  static const CompileTimeErrorCode CONST_CONSTRUCTOR_THROWS_EXCEPTION = const CompileTimeErrorCode.con1('CONST_CONSTRUCTOR_THROWS_EXCEPTION', 15, "'const' constructors cannot throw exceptions");
+  static const CompileTimeErrorCode CONST_CONSTRUCTOR_THROWS_EXCEPTION = const CompileTimeErrorCode.con1('CONST_CONSTRUCTOR_THROWS_EXCEPTION', 17, "'const' constructors cannot throw exceptions");
 
   /**
    * 10.6.3 Constant Constructors: It is a compile-time error if a constant constructor is declared
    * by a class C if any instance variable declared in C is initialized with an expression that is
    * not a constant expression.
    */
-  static const CompileTimeErrorCode CONST_CONSTRUCTOR_WITH_FIELD_INITIALIZED_BY_NON_CONST = const CompileTimeErrorCode.con1('CONST_CONSTRUCTOR_WITH_FIELD_INITIALIZED_BY_NON_CONST', 16, "Can't define the 'const' constructor because the field '{0}' is initialized with a non-constant value");
+  static const CompileTimeErrorCode CONST_CONSTRUCTOR_WITH_FIELD_INITIALIZED_BY_NON_CONST = const CompileTimeErrorCode.con1('CONST_CONSTRUCTOR_WITH_FIELD_INITIALIZED_BY_NON_CONST', 18, "Can't define the 'const' constructor because the field '{0}' is initialized with a non-constant value");
 
   /**
    * 7.6.3 Constant Constructors: The superinitializer that appears, explicitly or implicitly, in
    * the initializer list of a constant constructor must specify a constant constructor of the
    * superclass of the immediately enclosing class or a compile-time error occurs.
    *
    * 9 Mixins: For each generative constructor named ... an implicitly declared constructor named
    * ... is declared.
    */
-  static const CompileTimeErrorCode CONST_CONSTRUCTOR_WITH_MIXIN = const CompileTimeErrorCode.con1('CONST_CONSTRUCTOR_WITH_MIXIN', 17, "Constant constructor cannot be declared for a class with a mixin");
+  static const CompileTimeErrorCode CONST_CONSTRUCTOR_WITH_MIXIN = const CompileTimeErrorCode.con1('CONST_CONSTRUCTOR_WITH_MIXIN', 19, "Constant constructor cannot be declared for a class with a mixin");
 
   /**
    * 7.6.3 Constant Constructors: The superinitializer that appears, explicitly or implicitly, in
    * the initializer list of a constant constructor must specify a constant constructor of the
    * superclass of the immediately enclosing class or a compile-time error occurs.
    */
-  static const CompileTimeErrorCode CONST_CONSTRUCTOR_WITH_NON_CONST_SUPER = const CompileTimeErrorCode.con1('CONST_CONSTRUCTOR_WITH_NON_CONST_SUPER', 18, "Constant constructor cannot call non-constant super constructor of '{0}'");
+  static const CompileTimeErrorCode CONST_CONSTRUCTOR_WITH_NON_CONST_SUPER = const CompileTimeErrorCode.con1('CONST_CONSTRUCTOR_WITH_NON_CONST_SUPER', 20, "Constant constructor cannot call non-constant super constructor of '{0}'");
 
   /**
    * 7.6.3 Constant Constructors: It is a compile-time error if a constant constructor is declared
    * by a class that has a non-final instance variable.
    *
    * The above refers to both locally declared and inherited instance variables.
    */
-  static const CompileTimeErrorCode CONST_CONSTRUCTOR_WITH_NON_FINAL_FIELD = const CompileTimeErrorCode.con1('CONST_CONSTRUCTOR_WITH_NON_FINAL_FIELD', 19, "Cannot define the 'const' constructor for a class with non-final fields");
+  static const CompileTimeErrorCode CONST_CONSTRUCTOR_WITH_NON_FINAL_FIELD = const CompileTimeErrorCode.con1('CONST_CONSTRUCTOR_WITH_NON_FINAL_FIELD', 21, "Cannot define the 'const' constructor for a class with non-final fields");
 
   /**
    * 12.12.2 Const: It is a compile-time error if <i>T</i> is a deferred type.
    */
-  static const CompileTimeErrorCode CONST_DEFERRED_CLASS = const CompileTimeErrorCode.con1('CONST_DEFERRED_CLASS', 20, "Deferred classes cannot be created with 'const'");
+  static const CompileTimeErrorCode CONST_DEFERRED_CLASS = const CompileTimeErrorCode.con1('CONST_DEFERRED_CLASS', 22, "Deferred classes cannot be created with 'const'");
 
   /**
    * 7.6.1 Generative Constructors: In checked mode, it is a dynamic type error if o is not
    * <b>null</b> and the interface of the class of <i>o</i> is not a subtype of the static type of
    * the field <i>v</i>.
    *
    * 12.11.2 Const: It is a compile-time error if evaluation of a constant object results in an
    * uncaught exception being thrown.
    *
    * @param initializerType the name of the type of the initializer expression
    * @param fieldType the name of the type of the field
    */
-  static const CompileTimeErrorCode CONST_FIELD_INITIALIZER_NOT_ASSIGNABLE = const CompileTimeErrorCode.con1('CONST_FIELD_INITIALIZER_NOT_ASSIGNABLE', 21, "The initializer type '{0}' cannot be assigned to the field type '{1}'");
+  static const CompileTimeErrorCode CONST_FIELD_INITIALIZER_NOT_ASSIGNABLE = const CompileTimeErrorCode.con1('CONST_FIELD_INITIALIZER_NOT_ASSIGNABLE', 23, "The initializer type '{0}' cannot be assigned to the field type '{1}'");
 
   /**
    * 6.2 Formal Parameters: It is a compile-time error if a formal parameter is declared as a
    * constant variable.
    */
-  static const CompileTimeErrorCode CONST_FORMAL_PARAMETER = const CompileTimeErrorCode.con1('CONST_FORMAL_PARAMETER', 22, "Parameters cannot be 'const'");
+  static const CompileTimeErrorCode CONST_FORMAL_PARAMETER = const CompileTimeErrorCode.con1('CONST_FORMAL_PARAMETER', 24, "Parameters cannot be 'const'");
 
   /**
    * 5 Variables: A constant variable must be initialized to a compile-time constant or a
    * compile-time error occurs.
    */
-  static const CompileTimeErrorCode CONST_INITIALIZED_WITH_NON_CONSTANT_VALUE = const CompileTimeErrorCode.con1('CONST_INITIALIZED_WITH_NON_CONSTANT_VALUE', 23, "'const' variables must be constant value");
+  static const CompileTimeErrorCode CONST_INITIALIZED_WITH_NON_CONSTANT_VALUE = const CompileTimeErrorCode.con1('CONST_INITIALIZED_WITH_NON_CONSTANT_VALUE', 25, "'const' variables must be constant value");
 
   /**
    * 5 Variables: A constant variable must be initialized to a compile-time constant or a
    * compile-time error occurs.
    *
    * 12.1 Constants: A qualified reference to a static constant variable that is not qualified by a
    * deferred prefix.
    */
-  static const CompileTimeErrorCode CONST_INITIALIZED_WITH_NON_CONSTANT_VALUE_FROM_DEFERRED_LIBRARY = const CompileTimeErrorCode.con1('CONST_INITIALIZED_WITH_NON_CONSTANT_VALUE_FROM_DEFERRED_LIBRARY', 24, "Constant values from a deferred library cannot be used to initialized a 'const' variable");
+  static const CompileTimeErrorCode CONST_INITIALIZED_WITH_NON_CONSTANT_VALUE_FROM_DEFERRED_LIBRARY = const CompileTimeErrorCode.con1('CONST_INITIALIZED_WITH_NON_CONSTANT_VALUE_FROM_DEFERRED_LIBRARY', 26, "Constant values from a deferred library cannot be used to initialized a 'const' variable");
 
   /**
    * 7.5 Instance Variables: It is a compile-time error if an instance variable is declared to be
    * constant.
    */
-  static const CompileTimeErrorCode CONST_INSTANCE_FIELD = const CompileTimeErrorCode.con1('CONST_INSTANCE_FIELD', 25, "Only static fields can be declared as 'const'");
+  static const CompileTimeErrorCode CONST_INSTANCE_FIELD = const CompileTimeErrorCode.con1('CONST_INSTANCE_FIELD', 27, "Only static fields can be declared as 'const'");
 
   /**
    * 12.8 Maps: It is a compile-time error if the key of an entry in a constant map literal is an
    * instance of a class that implements the operator <i>==</i> unless the key is a string or
    * integer.
    */
-  static const CompileTimeErrorCode CONST_MAP_KEY_EXPRESSION_TYPE_IMPLEMENTS_EQUALS = const CompileTimeErrorCode.con1('CONST_MAP_KEY_EXPRESSION_TYPE_IMPLEMENTS_EQUALS', 26, "The constant map entry key expression type '{0}' cannot override the == operator");
+  static const CompileTimeErrorCode CONST_MAP_KEY_EXPRESSION_TYPE_IMPLEMENTS_EQUALS = const CompileTimeErrorCode.con1('CONST_MAP_KEY_EXPRESSION_TYPE_IMPLEMENTS_EQUALS', 28, "The constant map entry key expression type '{0}' cannot override the == operator");
 
   /**
    * 5 Variables: A constant variable must be initialized to a compile-time constant (12.1) or a
    * compile-time error occurs.
    *
    * @param name the name of the uninitialized final variable
    */
-  static const CompileTimeErrorCode CONST_NOT_INITIALIZED = const CompileTimeErrorCode.con1('CONST_NOT_INITIALIZED', 27, "The const variable '{0}' must be initialized");
+  static const CompileTimeErrorCode CONST_NOT_INITIALIZED = const CompileTimeErrorCode.con1('CONST_NOT_INITIALIZED', 29, "The const variable '{0}' must be initialized");
 
   /**
    * 12.11.2 Const: An expression of one of the forms !e, e1 && e2 or e1 || e2, where e, e1 and e2
    * are constant expressions that evaluate to a boolean value.
    */
-  static const CompileTimeErrorCode CONST_EVAL_TYPE_BOOL = const CompileTimeErrorCode.con1('CONST_EVAL_TYPE_BOOL', 28, "An expression of type 'bool' was expected");
+  static const CompileTimeErrorCode CONST_EVAL_TYPE_BOOL = const CompileTimeErrorCode.con1('CONST_EVAL_TYPE_BOOL', 30, "An expression of type 'bool' was expected");
 
   /**
    * 12.11.2 Const: An expression of one of the forms e1 == e2 or e1 != e2 where e1 and e2 are
    * constant expressions that evaluate to a numeric, string or boolean value or to null.
    */
-  static const CompileTimeErrorCode CONST_EVAL_TYPE_BOOL_NUM_STRING = const CompileTimeErrorCode.con1('CONST_EVAL_TYPE_BOOL_NUM_STRING', 29, "An expression of type 'bool', 'num', 'String' or 'null' was expected");
+  static const CompileTimeErrorCode CONST_EVAL_TYPE_BOOL_NUM_STRING = const CompileTimeErrorCode.con1('CONST_EVAL_TYPE_BOOL_NUM_STRING', 31, "An expression of type 'bool', 'num', 'String' or 'null' was expected");
 
   /**
    * 12.11.2 Const: An expression of one of the forms ~e, e1 ^ e2, e1 & e2, e1 | e2, e1 >> e2 or e1
    * << e2, where e, e1 and e2 are constant expressions that evaluate to an integer value or to
    * null.
    */
-  static const CompileTimeErrorCode CONST_EVAL_TYPE_INT = const CompileTimeErrorCode.con1('CONST_EVAL_TYPE_INT', 30, "An expression of type 'int' was expected");
+  static const CompileTimeErrorCode CONST_EVAL_TYPE_INT = const CompileTimeErrorCode.con1('CONST_EVAL_TYPE_INT', 32, "An expression of type 'int' was expected");
 
   /**
    * 12.11.2 Const: An expression of one of the forms e, e1 + e2, e1 - e2, e1 * e2, e1 / e2, e1 ~/
    * e2, e1 > e2, e1 < e2, e1 >= e2, e1 <= e2 or e1 % e2, where e, e1 and e2 are constant
    * expressions that evaluate to a numeric value or to null..
    */
-  static const CompileTimeErrorCode CONST_EVAL_TYPE_NUM = const CompileTimeErrorCode.con1('CONST_EVAL_TYPE_NUM', 31, "An expression of type 'num' was expected");
+  static const CompileTimeErrorCode CONST_EVAL_TYPE_NUM = const CompileTimeErrorCode.con1('CONST_EVAL_TYPE_NUM', 33, "An expression of type 'num' was expected");
 
   /**
    * 12.11.2 Const: It is a compile-time error if evaluation of a constant object results in an
    * uncaught exception being thrown.
    */
-  static const CompileTimeErrorCode CONST_EVAL_THROWS_EXCEPTION = const CompileTimeErrorCode.con1('CONST_EVAL_THROWS_EXCEPTION', 32, "Evaluation of this constant expression causes exception");
+  static const CompileTimeErrorCode CONST_EVAL_THROWS_EXCEPTION = const CompileTimeErrorCode.con1('CONST_EVAL_THROWS_EXCEPTION', 34, "Evaluation of this constant expression causes exception");
 
   /**
    * 12.11.2 Const: It is a compile-time error if evaluation of a constant object results in an
    * uncaught exception being thrown.
    */
-  static const CompileTimeErrorCode CONST_EVAL_THROWS_IDBZE = const CompileTimeErrorCode.con1('CONST_EVAL_THROWS_IDBZE', 33, "Evaluation of this constant expression throws IntegerDivisionByZeroException");
+  static const CompileTimeErrorCode CONST_EVAL_THROWS_IDBZE = const CompileTimeErrorCode.con1('CONST_EVAL_THROWS_IDBZE', 35, "Evaluation of this constant expression throws IntegerDivisionByZeroException");
 
   /**
    * 12.11.2 Const: If <i>T</i> is a parameterized type <i>S&lt;U<sub>1</sub>, &hellip;,
    * U<sub>m</sub>&gt;</i>, let <i>R = S</i>; It is a compile time error if <i>S</i> is not a
    * generic type with <i>m</i> type parameters.
    *
    * @param typeName the name of the type being referenced (<i>S</i>)
    * @param parameterCount the number of type parameters that were declared
    * @param argumentCount the number of type arguments provided
    * @see CompileTimeErrorCode#NEW_WITH_INVALID_TYPE_PARAMETERS
    * @see StaticTypeWarningCode#WRONG_NUMBER_OF_TYPE_ARGUMENTS
    */
-  static const CompileTimeErrorCode CONST_WITH_INVALID_TYPE_PARAMETERS = const CompileTimeErrorCode.con1('CONST_WITH_INVALID_TYPE_PARAMETERS', 34, "The type '{0}' is declared with {1} type parameters, but {2} type arguments were given");
+  static const CompileTimeErrorCode CONST_WITH_INVALID_TYPE_PARAMETERS = const CompileTimeErrorCode.con1('CONST_WITH_INVALID_TYPE_PARAMETERS', 36, "The type '{0}' is declared with {1} type parameters, but {2} type arguments were given");
 
   /**
    * 12.11.2 Const: If <i>e</i> is of the form <i>const T(a<sub>1</sub>, &hellip;, a<sub>n</sub>,
    * x<sub>n+1</sub>: a<sub>n+1</sub>, &hellip;, x<sub>n+k</sub>: a<sub>n+k</sub>)</i> it is a
    * compile-time error if the type <i>T</i> does not declare a constant constructor with the same
    * name as the declaration of <i>T</i>.
    */
-  static const CompileTimeErrorCode CONST_WITH_NON_CONST = const CompileTimeErrorCode.con1('CONST_WITH_NON_CONST', 35, "The constructor being called is not a 'const' constructor");
+  static const CompileTimeErrorCode CONST_WITH_NON_CONST = const CompileTimeErrorCode.con1('CONST_WITH_NON_CONST', 37, "The constructor being called is not a 'const' constructor");
 
   /**
    * 12.11.2 Const: In all of the above cases, it is a compile-time error if <i>a<sub>i</sub>, 1
    * &lt;= i &lt;= n + k</i>, is not a compile-time constant expression.
    */
-  static const CompileTimeErrorCode CONST_WITH_NON_CONSTANT_ARGUMENT = const CompileTimeErrorCode.con1('CONST_WITH_NON_CONSTANT_ARGUMENT', 36, "Arguments of a constant creation must be constant expressions");
+  static const CompileTimeErrorCode CONST_WITH_NON_CONSTANT_ARGUMENT = const CompileTimeErrorCode.con1('CONST_WITH_NON_CONSTANT_ARGUMENT', 38, "Arguments of a constant creation must be constant expressions");
 
   /**
    * 12.11.2 Const: It is a compile-time error if <i>T</i> is not a class accessible in the current
    * scope, optionally followed by type arguments.
    *
    * 12.11.2 Const: If <i>e</i> is of the form <i>const T.id(a<sub>1</sub>, &hellip;, a<sub>n</sub>,
    * x<sub>n+1</sub>: a<sub>n+1</sub>, &hellip; x<sub>n+k</sub>: a<sub>n+k</sub>)</i> it is a
    * compile-time error if <i>T</i> is not a class accessible in the current scope, optionally
    * followed by type arguments.
    *
    * @param name the name of the non-type element
    */
-  static const CompileTimeErrorCode CONST_WITH_NON_TYPE = const CompileTimeErrorCode.con1('CONST_WITH_NON_TYPE', 37, "The name '{0}' is not a class");
+  static const CompileTimeErrorCode CONST_WITH_NON_TYPE = const CompileTimeErrorCode.con1('CONST_WITH_NON_TYPE', 39, "The name '{0}' is not a class");
 
   /**
    * 12.11.2 Const: It is a compile-time error if <i>T</i> includes any type parameters.
    */
-  static const CompileTimeErrorCode CONST_WITH_TYPE_PARAMETERS = const CompileTimeErrorCode.con1('CONST_WITH_TYPE_PARAMETERS', 38, "The constant creation cannot use a type parameter");
+  static const CompileTimeErrorCode CONST_WITH_TYPE_PARAMETERS = const CompileTimeErrorCode.con1('CONST_WITH_TYPE_PARAMETERS', 40, "The constant creation cannot use a type parameter");
 
   /**
    * 12.11.2 Const: It is a compile-time error if <i>T.id</i> is not the name of a constant
    * constructor declared by the type <i>T</i>.
    *
    * @param typeName the name of the type
    * @param constructorName the name of the requested constant constructor
    */
-  static const CompileTimeErrorCode CONST_WITH_UNDEFINED_CONSTRUCTOR = const CompileTimeErrorCode.con1('CONST_WITH_UNDEFINED_CONSTRUCTOR', 39, "The class '{0}' does not have a constant constructor '{1}'");
+  static const CompileTimeErrorCode CONST_WITH_UNDEFINED_CONSTRUCTOR = const CompileTimeErrorCode.con1('CONST_WITH_UNDEFINED_CONSTRUCTOR', 41, "The class '{0}' does not have a constant constructor '{1}'");
 
   /**
    * 12.11.2 Const: It is a compile-time error if <i>T.id</i> is not the name of a constant
    * constructor declared by the type <i>T</i>.
    *
    * @param typeName the name of the type
    */
-  static const CompileTimeErrorCode CONST_WITH_UNDEFINED_CONSTRUCTOR_DEFAULT = const CompileTimeErrorCode.con1('CONST_WITH_UNDEFINED_CONSTRUCTOR_DEFAULT', 40, "The class '{0}' does not have a default constant constructor");
+  static const CompileTimeErrorCode CONST_WITH_UNDEFINED_CONSTRUCTOR_DEFAULT = const CompileTimeErrorCode.con1('CONST_WITH_UNDEFINED_CONSTRUCTOR_DEFAULT', 42, "The class '{0}' does not have a default constant constructor");
 
   /**
    * 15.3.1 Typedef: It is a compile-time error if any default values are specified in the signature
    * of a function type alias.
    */
-  static const CompileTimeErrorCode DEFAULT_VALUE_IN_FUNCTION_TYPE_ALIAS = const CompileTimeErrorCode.con1('DEFAULT_VALUE_IN_FUNCTION_TYPE_ALIAS', 41, "Default values aren't allowed in typedefs");
+  static const CompileTimeErrorCode DEFAULT_VALUE_IN_FUNCTION_TYPE_ALIAS = const CompileTimeErrorCode.con1('DEFAULT_VALUE_IN_FUNCTION_TYPE_ALIAS', 43, "Default values aren't allowed in typedefs");
 
   /**
    * 6.2.1 Required Formals: By means of a function signature that names the parameter and describes
    * its type as a function type. It is a compile-time error if any default values are specified in
    * the signature of such a function type.
    */
-  static const CompileTimeErrorCode DEFAULT_VALUE_IN_FUNCTION_TYPED_PARAMETER = const CompileTimeErrorCode.con1('DEFAULT_VALUE_IN_FUNCTION_TYPED_PARAMETER', 42, "Default values aren't allowed in function type parameters");
+  static const CompileTimeErrorCode DEFAULT_VALUE_IN_FUNCTION_TYPED_PARAMETER = const CompileTimeErrorCode.con1('DEFAULT_VALUE_IN_FUNCTION_TYPED_PARAMETER', 44, "Default values aren't allowed in function type parameters");
 
   /**
    * 7.6.2 Factories: It is a compile-time error if <i>k</i> explicitly specifies a default value
    * for an optional parameter.
    */
-  static const CompileTimeErrorCode DEFAULT_VALUE_IN_REDIRECTING_FACTORY_CONSTRUCTOR = const CompileTimeErrorCode.con1('DEFAULT_VALUE_IN_REDIRECTING_FACTORY_CONSTRUCTOR', 43, "Default values aren't allowed in factory constructors that redirect to another constructor");
+  static const CompileTimeErrorCode DEFAULT_VALUE_IN_REDIRECTING_FACTORY_CONSTRUCTOR = const CompileTimeErrorCode.con1('DEFAULT_VALUE_IN_REDIRECTING_FACTORY_CONSTRUCTOR', 45, "Default values aren't allowed in factory constructors that redirect to another constructor");
 
   /**
    * 3.1 Scoping: It is a compile-time error if there is more than one entity with the same name
    * declared in the same scope.
    */
-  static const CompileTimeErrorCode DUPLICATE_CONSTRUCTOR_DEFAULT = const CompileTimeErrorCode.con1('DUPLICATE_CONSTRUCTOR_DEFAULT', 44, "The default constructor is already defined");
+  static const CompileTimeErrorCode DUPLICATE_CONSTRUCTOR_DEFAULT = const CompileTimeErrorCode.con1('DUPLICATE_CONSTRUCTOR_DEFAULT', 46, "The default constructor is already defined");
 
   /**
    * 3.1 Scoping: It is a compile-time error if there is more than one entity with the same name
    * declared in the same scope.
    *
    * @param duplicateName the name of the duplicate entity
    */
-  static const CompileTimeErrorCode DUPLICATE_CONSTRUCTOR_NAME = const CompileTimeErrorCode.con1('DUPLICATE_CONSTRUCTOR_NAME', 45, "The constructor with name '{0}' is already defined");
+  static const CompileTimeErrorCode DUPLICATE_CONSTRUCTOR_NAME = const CompileTimeErrorCode.con1('DUPLICATE_CONSTRUCTOR_NAME', 47, "The constructor with name '{0}' is already defined");
 
   /**
    * 3.1 Scoping: It is a compile-time error if there is more than one entity with the same name
    * declared in the same scope.
    *
    * 7 Classes: It is a compile-time error if a class declares two members of the same name.
    *
    * 7 Classes: It is a compile-time error if a class has an instance member and a static member
    * with the same name.
    *
    * @param duplicateName the name of the duplicate entity
    */
-  static const CompileTimeErrorCode DUPLICATE_DEFINITION = const CompileTimeErrorCode.con1('DUPLICATE_DEFINITION', 46, "The name '{0}' is already defined");
+  static const CompileTimeErrorCode DUPLICATE_DEFINITION = const CompileTimeErrorCode.con1('DUPLICATE_DEFINITION', 48, "The name '{0}' is already defined");
 
   /**
    * 7. Classes: It is a compile-time error if a class has an instance member and a static member
    * with the same name.
    *
    * This covers the additional duplicate definition cases where inheritance has to be considered.
    *
    * @param className the name of the class that has conflicting instance/static members
    * @param name the name of the conflicting members
    * @see #DUPLICATE_DEFINITION
    */
-  static const CompileTimeErrorCode DUPLICATE_DEFINITION_INHERITANCE = const CompileTimeErrorCode.con1('DUPLICATE_DEFINITION_INHERITANCE', 47, "The name '{0}' is already defined in '{1}'");
+  static const CompileTimeErrorCode DUPLICATE_DEFINITION_INHERITANCE = const CompileTimeErrorCode.con1('DUPLICATE_DEFINITION_INHERITANCE', 49, "The name '{0}' is already defined in '{1}'");
 
   /**
    * 12.14.2 Binding Actuals to Formals: It is a compile-time error if <i>q<sub>i</sub> =
    * q<sub>j</sub></i> for any <i>i != j</i> [where <i>q<sub>i</sub></i> is the label for a named
    * argument].
    */
-  static const CompileTimeErrorCode DUPLICATE_NAMED_ARGUMENT = const CompileTimeErrorCode.con1('DUPLICATE_NAMED_ARGUMENT', 48, "The argument for the named parameter '{0}' was already specified");
+  static const CompileTimeErrorCode DUPLICATE_NAMED_ARGUMENT = const CompileTimeErrorCode.con1('DUPLICATE_NAMED_ARGUMENT', 50, "The argument for the named parameter '{0}' was already specified");
 
   /**
    * SDK implementation libraries can be exported only by other SDK libraries.
    *
    * @param uri the uri pointing to a library
    */
-  static const CompileTimeErrorCode EXPORT_INTERNAL_LIBRARY = const CompileTimeErrorCode.con1('EXPORT_INTERNAL_LIBRARY', 49, "The library '{0}' is internal and cannot be exported");
+  static const CompileTimeErrorCode EXPORT_INTERNAL_LIBRARY = const CompileTimeErrorCode.con1('EXPORT_INTERNAL_LIBRARY', 51, "The library '{0}' is internal and cannot be exported");
 
   /**
    * 14.2 Exports: It is a compile-time error if the compilation unit found at the specified URI is
    * not a library declaration.
    *
    * @param uri the uri pointing to a non-library declaration
    */
-  static const CompileTimeErrorCode EXPORT_OF_NON_LIBRARY = const CompileTimeErrorCode.con1('EXPORT_OF_NON_LIBRARY', 50, "The exported library '{0}' must not have a part-of directive");
+  static const CompileTimeErrorCode EXPORT_OF_NON_LIBRARY = const CompileTimeErrorCode.con1('EXPORT_OF_NON_LIBRARY', 52, "The exported library '{0}' must not have a part-of directive");
 
   /**
    * Enum proposal: It is a compile-time error to subclass, mix-in or implement an enum.
    */
-  static const CompileTimeErrorCode EXTENDS_ENUM = const CompileTimeErrorCode.con1('EXTENDS_ENUM', 51, "Classes cannot extend an enum");
+  static const CompileTimeErrorCode EXTENDS_ENUM = const CompileTimeErrorCode.con1('EXTENDS_ENUM', 53, "Classes cannot extend an enum");
 
   /**
    * 7.9 Superclasses: It is a compile-time error if the extends clause of a class <i>C</i> includes
    * a type expression that does not denote a class available in the lexical scope of <i>C</i>.
    *
    * @param typeName the name of the superclass that was not found
    */
-  static const CompileTimeErrorCode EXTENDS_NON_CLASS = const CompileTimeErrorCode.con1('EXTENDS_NON_CLASS', 52, "Classes can only extend other classes");
+  static const CompileTimeErrorCode EXTENDS_NON_CLASS = const CompileTimeErrorCode.con1('EXTENDS_NON_CLASS', 54, "Classes can only extend other classes");
 
   /**
    * 12.2 Null: It is a compile-time error for a class to attempt to extend or implement Null.
    *
    * 12.3 Numbers: It is a compile-time error for a class to attempt to extend or implement int.
    *
    * 12.3 Numbers: It is a compile-time error for a class to attempt to extend or implement double.
    *
    * 12.3 Numbers: It is a compile-time error for any type other than the types int and double to
    * attempt to extend or implement num.
    *
    * 12.4 Booleans: It is a compile-time error for a class to attempt to extend or implement bool.
    *
    * 12.5 Strings: It is a compile-time error for a class to attempt to extend or implement String.
    *
    * @param typeName the name of the type that cannot be extended
    * @see #IMPLEMENTS_DISALLOWED_CLASS
    */
-  static const CompileTimeErrorCode EXTENDS_DISALLOWED_CLASS = const CompileTimeErrorCode.con1('EXTENDS_DISALLOWED_CLASS', 53, "Classes cannot extend '{0}'");
+  static const CompileTimeErrorCode EXTENDS_DISALLOWED_CLASS = const CompileTimeErrorCode.con1('EXTENDS_DISALLOWED_CLASS', 55, "Classes cannot extend '{0}'");
 
   /**
    * 7.9 Superclasses: It is a compile-time error if the extends clause of a class <i>C</i> includes
    * a deferred type expression.
    *
    * @param typeName the name of the type that cannot be extended
    * @see #IMPLEMENTS_DEFERRED_CLASS
    * @see #MIXIN_DEFERRED_CLASS
    */
-  static const CompileTimeErrorCode EXTENDS_DEFERRED_CLASS = const CompileTimeErrorCode.con1('EXTENDS_DEFERRED_CLASS', 54, "This class cannot extend the deferred class '{0}'");
+  static const CompileTimeErrorCode EXTENDS_DEFERRED_CLASS = const CompileTimeErrorCode.con1('EXTENDS_DEFERRED_CLASS', 56, "This class cannot extend the deferred class '{0}'");
 
   /**
    * 12.14.2 Binding Actuals to Formals: It is a static warning if <i>m &lt; h</i> or if <i>m &gt;
    * n</i>.
    *
    * 12.11.2 Const: It is a compile-time error if evaluation of a constant object results in an
    * uncaught exception being thrown.
    *
    * @param requiredCount the maximum number of positional arguments
    * @param argumentCount the actual number of positional arguments given
    */
-  static const CompileTimeErrorCode EXTRA_POSITIONAL_ARGUMENTS = const CompileTimeErrorCode.con1('EXTRA_POSITIONAL_ARGUMENTS', 55, "{0} positional arguments expected, but {1} found");
+  static const CompileTimeErrorCode EXTRA_POSITIONAL_ARGUMENTS = const CompileTimeErrorCode.con1('EXTRA_POSITIONAL_ARGUMENTS', 57, "{0} positional arguments expected, but {1} found");
 
   /**
    * 7.6.1 Generative Constructors: Let <i>k</i> be a generative constructor. It is a compile time
    * error if more than one initializer corresponding to a given instance variable appears in
    * <i>k</i>'s list.
    */
-  static const CompileTimeErrorCode FIELD_INITIALIZED_BY_MULTIPLE_INITIALIZERS = const CompileTimeErrorCode.con1('FIELD_INITIALIZED_BY_MULTIPLE_INITIALIZERS', 56, "The field '{0}' cannot be initialized twice in the same constructor");
+  static const CompileTimeErrorCode FIELD_INITIALIZED_BY_MULTIPLE_INITIALIZERS = const CompileTimeErrorCode.con1('FIELD_INITIALIZED_BY_MULTIPLE_INITIALIZERS', 58, "The field '{0}' cannot be initialized twice in the same constructor");
 
   /**
    * 7.6.1 Generative Constructors: Let <i>k</i> be a generative constructor. It is a compile time
    * error if <i>k</i>'s initializer list contains an initializer for a variable that is initialized
    * by means of an initializing formal of <i>k</i>.
    */
-  static const CompileTimeErrorCode FIELD_INITIALIZED_IN_PARAMETER_AND_INITIALIZER = const CompileTimeErrorCode.con1('FIELD_INITIALIZED_IN_PARAMETER_AND_INITIALIZER', 57, "Fields cannot be initialized in both the parameter list and the initializers");
+  static const CompileTimeErrorCode FIELD_INITIALIZED_IN_PARAMETER_AND_INITIALIZER = const CompileTimeErrorCode.con1('FIELD_INITIALIZED_IN_PARAMETER_AND_INITIALIZER', 59, "Fields cannot be initialized in both the parameter list and the initializers");
 
   /**
    * 5 Variables: It is a compile-time error if a final instance variable that has is initialized by
    * means of an initializing formal of a constructor is also initialized elsewhere in the same
    * constructor.
    *
    * @param name the name of the field in question
    */
-  static const CompileTimeErrorCode FINAL_INITIALIZED_MULTIPLE_TIMES = const CompileTimeErrorCode.con1('FINAL_INITIALIZED_MULTIPLE_TIMES', 58, "'{0}' is a final field and so can only be set once");
+  static const CompileTimeErrorCode FINAL_INITIALIZED_MULTIPLE_TIMES = const CompileTimeErrorCode.con1('FINAL_INITIALIZED_MULTIPLE_TIMES', 60, "'{0}' is a final field and so can only be set once");
 
   /**
    * 7.6.1 Generative Constructors: It is a compile-time error if an initializing formal is used by
    * a function other than a non-redirecting generative constructor.
    */
-  static const CompileTimeErrorCode FIELD_INITIALIZER_FACTORY_CONSTRUCTOR = const CompileTimeErrorCode.con1('FIELD_INITIALIZER_FACTORY_CONSTRUCTOR', 59, "Initializing formal fields cannot be used in factory constructors");
+  static const CompileTimeErrorCode FIELD_INITIALIZER_FACTORY_CONSTRUCTOR = const CompileTimeErrorCode.con1('FIELD_INITIALIZER_FACTORY_CONSTRUCTOR', 61, "Initializing formal fields cannot be used in factory constructors");
 
   /**
    * 7.6.1 Generative Constructors: It is a compile-time error if an initializing formal is used by
    * a function other than a non-redirecting generative constructor.
    */
-  static const CompileTimeErrorCode FIELD_INITIALIZER_OUTSIDE_CONSTRUCTOR = const CompileTimeErrorCode.con1('FIELD_INITIALIZER_OUTSIDE_CONSTRUCTOR', 60, "Initializing formal fields can only be used in constructors");
+  static const CompileTimeErrorCode FIELD_INITIALIZER_OUTSIDE_CONSTRUCTOR = const CompileTimeErrorCode.con1('FIELD_INITIALIZER_OUTSIDE_CONSTRUCTOR', 62, "Initializing formal fields can only be used in constructors");
 
   /**
    * 7.6.1 Generative Constructors: A generative constructor may be redirecting, in which case its
    * only action is to invoke another generative constructor.
    *
    * 7.6.1 Generative Constructors: It is a compile-time error if an initializing formal is used by
    * a function other than a non-redirecting generative constructor.
    */
-  static const CompileTimeErrorCode FIELD_INITIALIZER_REDIRECTING_CONSTRUCTOR = const CompileTimeErrorCode.con1('FIELD_INITIALIZER_REDIRECTING_CONSTRUCTOR', 61, "The redirecting constructor cannot have a field initializer");
+  static const CompileTimeErrorCode FIELD_INITIALIZER_REDIRECTING_CONSTRUCTOR = const CompileTimeErrorCode.con1('FIELD_INITIALIZER_REDIRECTING_CONSTRUCTOR', 63, "The redirecting constructor cannot have a field initializer");
 
   /**
    * 7.2 Getters: It is a compile-time error if a class has both a getter and a method with the same
    * name.
    *
    * @param name the conflicting name of the getter and method
    */
-  static const CompileTimeErrorCode GETTER_AND_METHOD_WITH_SAME_NAME = const CompileTimeErrorCode.con1('GETTER_AND_METHOD_WITH_SAME_NAME', 62, "'{0}' cannot be used to name a getter, there is already a method with the same name");
+  static const CompileTimeErrorCode GETTER_AND_METHOD_WITH_SAME_NAME = const CompileTimeErrorCode.con1('GETTER_AND_METHOD_WITH_SAME_NAME', 64, "'{0}' cannot be used to name a getter, there is already a method with the same name");
 
   /**
    * 7.10 Superinterfaces: It is a compile-time error if the implements clause of a class <i>C</i>
    * specifies a malformed type or deferred type as a superinterface.
    *
    * @param typeName the name of the type that cannot be extended
    * @see #EXTENDS_DEFERRED_CLASS
    * @see #MIXIN_DEFERRED_CLASS
    */
-  static const CompileTimeErrorCode IMPLEMENTS_DEFERRED_CLASS = const CompileTimeErrorCode.con1('IMPLEMENTS_DEFERRED_CLASS', 63, "This class cannot implement the deferred class '{0}'");
+  static const CompileTimeErrorCode IMPLEMENTS_DEFERRED_CLASS = const CompileTimeErrorCode.con1('IMPLEMENTS_DEFERRED_CLASS', 65, "This class cannot implement the deferred class '{0}'");
 
   /**
    * 12.2 Null: It is a compile-time error for a class to attempt to extend or implement Null.
    *
    * 12.3 Numbers: It is a compile-time error for a class to attempt to extend or implement int.
    *
    * 12.3 Numbers: It is a compile-time error for a class to attempt to extend or implement double.
    *
    * 12.3 Numbers: It is a compile-time error for any type other than the types int and double to
    * attempt to extend or implement num.
    *
    * 12.4 Booleans: It is a compile-time error for a class to attempt to extend or implement bool.
    *
    * 12.5 Strings: It is a compile-time error for a class to attempt to extend or implement String.
    *
    * @param typeName the name of the type that cannot be implemented
    * @see #EXTENDS_DISALLOWED_CLASS
    */
-  static const CompileTimeErrorCode IMPLEMENTS_DISALLOWED_CLASS = const CompileTimeErrorCode.con1('IMPLEMENTS_DISALLOWED_CLASS', 64, "Classes cannot implement '{0}'");
+  static const CompileTimeErrorCode IMPLEMENTS_DISALLOWED_CLASS = const CompileTimeErrorCode.con1('IMPLEMENTS_DISALLOWED_CLASS', 66, "Classes cannot implement '{0}'");
 
   /**
    * 7.10 Superinterfaces: It is a compile-time error if the implements clause of a class includes
    * type dynamic.
    */
-  static const CompileTimeErrorCode IMPLEMENTS_DYNAMIC = const CompileTimeErrorCode.con1('IMPLEMENTS_DYNAMIC', 65, "Classes cannot implement 'dynamic'");
+  static const CompileTimeErrorCode IMPLEMENTS_DYNAMIC = const CompileTimeErrorCode.con1('IMPLEMENTS_DYNAMIC', 67, "Classes cannot implement 'dynamic'");
 
   /**
    * Enum proposal: It is a compile-time error to subclass, mix-in or implement an enum.
    */
-  static const CompileTimeErrorCode IMPLEMENTS_ENUM = const CompileTimeErrorCode.con1('IMPLEMENTS_ENUM', 66, "Classes cannot implement an enum");
+  static const CompileTimeErrorCode IMPLEMENTS_ENUM = const CompileTimeErrorCode.con1('IMPLEMENTS_ENUM', 68, "Classes cannot implement an enum");
 
   /**
    * 7.10 Superinterfaces: It is a compile-time error if the implements clause of a class <i>C</i>
    * includes a type expression that does not denote a class available in the lexical scope of
    * <i>C</i>.
    *
    * @param typeName the name of the interface that was not found
    */
-  static const CompileTimeErrorCode IMPLEMENTS_NON_CLASS = const CompileTimeErrorCode.con1('IMPLEMENTS_NON_CLASS', 67, "Classes can only implement other classes");
+  static const CompileTimeErrorCode IMPLEMENTS_NON_CLASS = const CompileTimeErrorCode.con1('IMPLEMENTS_NON_CLASS', 69, "Classes can only implement other classes");
 
   /**
    * 7.10 Superinterfaces: It is a compile-time error if a type <i>T</i> appears more than once in
    * the implements clause of a class.
    *
    * @param className the name of the class that is implemented more than once
    */
-  static const CompileTimeErrorCode IMPLEMENTS_REPEATED = const CompileTimeErrorCode.con1('IMPLEMENTS_REPEATED', 68, "'{0}' can only be implemented once");
+  static const CompileTimeErrorCode IMPLEMENTS_REPEATED = const CompileTimeErrorCode.con1('IMPLEMENTS_REPEATED', 70, "'{0}' can only be implemented once");
 
   /**
    * 7.10 Superinterfaces: It is a compile-time error if the superclass of a class <i>C</i> appears
    * in the implements clause of <i>C</i>.
    *
    * @param className the name of the class that appears in both "extends" and "implements" clauses
    */
-  static const CompileTimeErrorCode IMPLEMENTS_SUPER_CLASS = const CompileTimeErrorCode.con1('IMPLEMENTS_SUPER_CLASS', 69, "'{0}' cannot be used in both 'extends' and 'implements' clauses");
+  static const CompileTimeErrorCode IMPLEMENTS_SUPER_CLASS = const CompileTimeErrorCode.con1('IMPLEMENTS_SUPER_CLASS', 71, "'{0}' cannot be used in both 'extends' and 'implements' clauses");
 
   /**
    * 7.6.1 Generative Constructors: Note that <b>this</b> is not in scope on the right hand side of
    * an initializer.
    *
    * 12.10 This: It is a compile-time error if this appears in a top-level function or variable
    * initializer, in a factory constructor, or in a static method or variable initializer, or in the
    * initializer of an instance variable.
    *
    * @param name the name of the type in question
    */
-  static const CompileTimeErrorCode IMPLICIT_THIS_REFERENCE_IN_INITIALIZER = const CompileTimeErrorCode.con1('IMPLICIT_THIS_REFERENCE_IN_INITIALIZER', 70, "Only static members can be accessed in initializers");
+  static const CompileTimeErrorCode IMPLICIT_THIS_REFERENCE_IN_INITIALIZER = const CompileTimeErrorCode.con1('IMPLICIT_THIS_REFERENCE_IN_INITIALIZER', 72, "Only static members can be accessed in initializers");
 
   /**
    * SDK implementation libraries can be imported only by other SDK libraries.
    *
    * @param uri the uri pointing to a library
    */
-  static const CompileTimeErrorCode IMPORT_INTERNAL_LIBRARY = const CompileTimeErrorCode.con1('IMPORT_INTERNAL_LIBRARY', 71, "The library '{0}' is internal and cannot be imported");
+  static const CompileTimeErrorCode IMPORT_INTERNAL_LIBRARY = const CompileTimeErrorCode.con1('IMPORT_INTERNAL_LIBRARY', 73, "The library '{0}' is internal and cannot be imported");
 
   /**
    * 14.1 Imports: It is a compile-time error if the specified URI of an immediate import does not
    * refer to a library declaration.
    *
    * @param uri the uri pointing to a non-library declaration
    * @see StaticWarningCode#IMPORT_OF_NON_LIBRARY
    */
-  static const CompileTimeErrorCode IMPORT_OF_NON_LIBRARY = const CompileTimeErrorCode.con1('IMPORT_OF_NON_LIBRARY', 72, "The imported library '{0}' must not have a part-of directive");
+  static const CompileTimeErrorCode IMPORT_OF_NON_LIBRARY = const CompileTimeErrorCode.con1('IMPORT_OF_NON_LIBRARY', 74, "The imported library '{0}' must not have a part-of directive");
 
   /**
    * 13.9 Switch: It is a compile-time error if values of the expressions <i>e<sub>k</sub></i> are
    * not instances of the same class <i>C</i>, for all <i>1 &lt;= k &lt;= n</i>.
    *
    * @param expressionSource the expression source code that is the unexpected type
    * @param expectedType the name of the expected type
    */
-  static const CompileTimeErrorCode INCONSISTENT_CASE_EXPRESSION_TYPES = const CompileTimeErrorCode.con1('INCONSISTENT_CASE_EXPRESSION_TYPES', 73, "Case expressions must have the same types, '{0}' is not a '{1}'");
+  static const CompileTimeErrorCode INCONSISTENT_CASE_EXPRESSION_TYPES = const CompileTimeErrorCode.con1('INCONSISTENT_CASE_EXPRESSION_TYPES', 75, "Case expressions must have the same types, '{0}' is not a '{1}'");
 
   /**
    * 7.6.1 Generative Constructors: Let <i>k</i> be a generative constructor. It is a compile-time
    * error if <i>k</i>'s initializer list contains an initializer for a variable that is not an
    * instance variable declared in the immediately surrounding class.
    *
    * @param id the name of the initializing formal that is not an instance variable in the
    *          immediately enclosing class
    * @see #INITIALIZING_FORMAL_FOR_NON_EXISTANT_FIELD
    */
-  static const CompileTimeErrorCode INITIALIZER_FOR_NON_EXISTANT_FIELD = const CompileTimeErrorCode.con1('INITIALIZER_FOR_NON_EXISTANT_FIELD', 74, "'{0}' is not a variable in the enclosing class");
+  static const CompileTimeErrorCode INITIALIZER_FOR_NON_EXISTANT_FIELD = const CompileTimeErrorCode.con1('INITIALIZER_FOR_NON_EXISTANT_FIELD', 76, "'{0}' is not a variable in the enclosing class");
 
   /**
    * 7.6.1 Generative Constructors: Let <i>k</i> be a generative constructor. It is a compile-time
    * error if <i>k</i>'s initializer list contains an initializer for a variable that is not an
    * instance variable declared in the immediately surrounding class.
    *
    * @param id the name of the initializing formal that is a static variable in the immediately
    *          enclosing class
    * @see #INITIALIZING_FORMAL_FOR_STATIC_FIELD
    */
-  static const CompileTimeErrorCode INITIALIZER_FOR_STATIC_FIELD = const CompileTimeErrorCode.con1('INITIALIZER_FOR_STATIC_FIELD', 75, "'{0}' is a static variable in the enclosing class, variables initialized in a constructor cannot be static");
+  static const CompileTimeErrorCode INITIALIZER_FOR_STATIC_FIELD = const CompileTimeErrorCode.con1('INITIALIZER_FOR_STATIC_FIELD', 77, "'{0}' is a static variable in the enclosing class, variables initialized in a constructor cannot be static");
 
   /**
    * 7.6.1 Generative Constructors: An initializing formal has the form <i>this.id</i>. It is a
    * compile-time error if <i>id</i> is not the name of an instance variable of the immediately
    * enclosing class.
    *
    * @param id the name of the initializing formal that is not an instance variable in the
    *          immediately enclosing class
    * @see #INITIALIZING_FORMAL_FOR_STATIC_FIELD
    * @see #INITIALIZER_FOR_NON_EXISTANT_FIELD
    */
-  static const CompileTimeErrorCode INITIALIZING_FORMAL_FOR_NON_EXISTANT_FIELD = const CompileTimeErrorCode.con1('INITIALIZING_FORMAL_FOR_NON_EXISTANT_FIELD', 76, "'{0}' is not a variable in the enclosing class");
+  static const CompileTimeErrorCode INITIALIZING_FORMAL_FOR_NON_EXISTANT_FIELD = const CompileTimeErrorCode.con1('INITIALIZING_FORMAL_FOR_NON_EXISTANT_FIELD', 78, "'{0}' is not a variable in the enclosing class");
 
   /**
    * 7.6.1 Generative Constructors: An initializing formal has the form <i>this.id</i>. It is a
    * compile-time error if <i>id</i> is not the name of an instance variable of the immediately
    * enclosing class.
    *
    * @param id the name of the initializing formal that is a static variable in the immediately
    *          enclosing class
    * @see #INITIALIZER_FOR_STATIC_FIELD
    */
-  static const CompileTimeErrorCode INITIALIZING_FORMAL_FOR_STATIC_FIELD = const CompileTimeErrorCode.con1('INITIALIZING_FORMAL_FOR_STATIC_FIELD', 77, "'{0}' is a static field in the enclosing class, fields initialized in a constructor cannot be static");
+  static const CompileTimeErrorCode INITIALIZING_FORMAL_FOR_STATIC_FIELD = const CompileTimeErrorCode.con1('INITIALIZING_FORMAL_FOR_STATIC_FIELD', 79, "'{0}' is a static field in the enclosing class, fields initialized in a constructor cannot be static");
 
   /**
    * 12.30 Identifier Reference: Otherwise, e is equivalent to the property extraction
    * <b>this</b>.<i>id</i>.
    */
-  static const CompileTimeErrorCode INSTANCE_MEMBER_ACCESS_FROM_FACTORY = const CompileTimeErrorCode.con1('INSTANCE_MEMBER_ACCESS_FROM_FACTORY', 78, "Instance members cannot be accessed from a factory constructor");
+  static const CompileTimeErrorCode INSTANCE_MEMBER_ACCESS_FROM_FACTORY = const CompileTimeErrorCode.con1('INSTANCE_MEMBER_ACCESS_FROM_FACTORY', 80, "Instance members cannot be accessed from a factory constructor");
 
   /**
    * 12.30 Identifier Reference: Otherwise, e is equivalent to the property extraction
    * <b>this</b>.<i>id</i>.
    */
-  static const CompileTimeErrorCode INSTANCE_MEMBER_ACCESS_FROM_STATIC = const CompileTimeErrorCode.con1('INSTANCE_MEMBER_ACCESS_FROM_STATIC', 79, "Instance members cannot be accessed from a static method");
+  static const CompileTimeErrorCode INSTANCE_MEMBER_ACCESS_FROM_STATIC = const CompileTimeErrorCode.con1('INSTANCE_MEMBER_ACCESS_FROM_STATIC', 81, "Instance members cannot be accessed from a static method");
 
   /**
    * Enum proposal: It is also a compile-time error to explicitly instantiate an enum via 'new' or
    * 'const' or to access its private fields.
    */
-  static const CompileTimeErrorCode INSTANTIATE_ENUM = const CompileTimeErrorCode.con1('INSTANTIATE_ENUM', 80, "Enums cannot be instantiated");
+  static const CompileTimeErrorCode INSTANTIATE_ENUM = const CompileTimeErrorCode.con1('INSTANTIATE_ENUM', 82, "Enums cannot be instantiated");
 
   /**
    * 11 Metadata: Metadata consists of a series of annotations, each of which begin with the
    * character @, followed by a constant expression that must be either a reference to a
    * compile-time constant variable, or a call to a constant constructor.
    */
-  static const CompileTimeErrorCode INVALID_ANNOTATION = const CompileTimeErrorCode.con1('INVALID_ANNOTATION', 81, "Annotation can be only constant variable or constant constructor invocation");
+  static const CompileTimeErrorCode INVALID_ANNOTATION = const CompileTimeErrorCode.con1('INVALID_ANNOTATION', 83, "Annotation can be only constant variable or constant constructor invocation");
 
   /**
    * 11 Metadata: Metadata consists of a series of annotations, each of which begin with the
    * character @, followed by a constant expression that must be either a reference to a
    * compile-time constant variable, or a call to a constant constructor.
    *
    * 12.1 Constants: A qualified reference to a static constant variable that is not qualified by a
    * deferred prefix.
    */
-  static const CompileTimeErrorCode INVALID_ANNOTATION_FROM_DEFERRED_LIBRARY = const CompileTimeErrorCode.con1('INVALID_ANNOTATION_FROM_DEFERRED_LIBRARY', 82, "Constant values from a deferred library cannot be used as annotations");
+  static const CompileTimeErrorCode INVALID_ANNOTATION_FROM_DEFERRED_LIBRARY = const CompileTimeErrorCode.con1('INVALID_ANNOTATION_FROM_DEFERRED_LIBRARY', 84, "Constant values from a deferred library cannot be used as annotations");
+
+  /**
+   * 15.31 Identifier Reference: It is a compile-time error if any of the identifiers async, await
+   * or yield is used as an identifier in a function body marked with either async, async* or sync*.
+   */
+  static const CompileTimeErrorCode INVALID_IDENTIFIER_IN_ASYNC = const CompileTimeErrorCode.con1('INVALID_IDENTIFIER_IN_ASYNC', 85, "The identifier '{0}' cannot be used in a function marked with async, async* or sync*");
+
+  /**
+   * 9. Functions: It is a compile-time error if an async, async* or sync* modifier is attached to
+   * the body of a setter or constructor.
+   */
+  static const CompileTimeErrorCode INVALID_MODIFIER_ON_CONSTRUCTOR = const CompileTimeErrorCode.con1('INVALID_MODIFIER_ON_CONSTRUCTOR', 86, "The modifier '{0}' cannot be applied to the body of a constructor");
+
+  /**
+   * 9. Functions: It is a compile-time error if an async, async* or sync* modifier is attached to
+   * the body of a setter or constructor.
+   */
+  static const CompileTimeErrorCode INVALID_MODIFIER_ON_SETTER = const CompileTimeErrorCode.con1('INVALID_MODIFIER_ON_SETTER', 87, "The modifier '{0}' cannot be applied to the body of a setter");
 
   /**
    * TODO(brianwilkerson) Remove this when we have decided on how to report errors in compile-time
    * constants. Until then, this acts as a placeholder for more informative errors.
    *
    * See TODOs in ConstantVisitor
    */
-  static const CompileTimeErrorCode INVALID_CONSTANT = const CompileTimeErrorCode.con1('INVALID_CONSTANT', 83, "Invalid constant value");
+  static const CompileTimeErrorCode INVALID_CONSTANT = const CompileTimeErrorCode.con1('INVALID_CONSTANT', 88, "Invalid constant value");
 
   /**
    * 7.6 Constructors: It is a compile-time error if the name of a constructor is not a constructor
    * name.
    */
-  static const CompileTimeErrorCode INVALID_CONSTRUCTOR_NAME = const CompileTimeErrorCode.con1('INVALID_CONSTRUCTOR_NAME', 84, "Invalid constructor name");
+  static const CompileTimeErrorCode INVALID_CONSTRUCTOR_NAME = const CompileTimeErrorCode.con1('INVALID_CONSTRUCTOR_NAME', 89, "Invalid constructor name");
 
   /**
    * 7.6.2 Factories: It is a compile-time error if <i>M</i> is not the name of the immediately
    * enclosing class.
    */
-  static const CompileTimeErrorCode INVALID_FACTORY_NAME_NOT_A_CLASS = const CompileTimeErrorCode.con1('INVALID_FACTORY_NAME_NOT_A_CLASS', 85, "The name of the immediately enclosing class expected");
+  static const CompileTimeErrorCode INVALID_FACTORY_NAME_NOT_A_CLASS = const CompileTimeErrorCode.con1('INVALID_FACTORY_NAME_NOT_A_CLASS', 90, "The name of the immediately enclosing class expected");
 
   /**
    * 12.10 This: It is a compile-time error if this appears in a top-level function or variable
    * initializer, in a factory constructor, or in a static method or variable initializer, or in the
    * initializer of an instance variable.
    */
-  static const CompileTimeErrorCode INVALID_REFERENCE_TO_THIS = const CompileTimeErrorCode.con1('INVALID_REFERENCE_TO_THIS', 86, "Invalid reference to 'this' expression");
+  static const CompileTimeErrorCode INVALID_REFERENCE_TO_THIS = const CompileTimeErrorCode.con1('INVALID_REFERENCE_TO_THIS', 91, "Invalid reference to 'this' expression");
 
   /**
    * 12.6 Lists: It is a compile time error if the type argument of a constant list literal includes
    * a type parameter.
    *
    * @name the name of the type parameter
    */
-  static const CompileTimeErrorCode INVALID_TYPE_ARGUMENT_IN_CONST_LIST = const CompileTimeErrorCode.con1('INVALID_TYPE_ARGUMENT_IN_CONST_LIST', 87, "Constant list literals cannot include a type parameter as a type argument, such as '{0}'");
+  static const CompileTimeErrorCode INVALID_TYPE_ARGUMENT_IN_CONST_LIST = const CompileTimeErrorCode.con1('INVALID_TYPE_ARGUMENT_IN_CONST_LIST', 92, "Constant list literals cannot include a type parameter as a type argument, such as '{0}'");
 
   /**
    * 12.7 Maps: It is a compile time error if the type arguments of a constant map literal include a
    * type parameter.
    *
    * @name the name of the type parameter
    */
-  static const CompileTimeErrorCode INVALID_TYPE_ARGUMENT_IN_CONST_MAP = const CompileTimeErrorCode.con1('INVALID_TYPE_ARGUMENT_IN_CONST_MAP', 88, "Constant map literals cannot include a type parameter as a type argument, such as '{0}'");
+  static const CompileTimeErrorCode INVALID_TYPE_ARGUMENT_IN_CONST_MAP = const CompileTimeErrorCode.con1('INVALID_TYPE_ARGUMENT_IN_CONST_MAP', 93, "Constant map literals cannot include a type parameter as a type argument, such as '{0}'");
 
   /**
    * 14.2 Exports: It is a compile-time error if the compilation unit found at the specified URI is
    * not a library declaration.
    *
    * 14.1 Imports: It is a compile-time error if the compilation unit found at the specified URI is
    * not a library declaration.
    *
    * 14.3 Parts: It is a compile time error if the contents of the URI are not a valid part
    * declaration.
    *
    * @param uri the URI that is invalid
    * @see #URI_DOES_NOT_EXIST
    */
-  static const CompileTimeErrorCode INVALID_URI = const CompileTimeErrorCode.con1('INVALID_URI', 89, "Invalid URI syntax: '{0}'");
+  static const CompileTimeErrorCode INVALID_URI = const CompileTimeErrorCode.con1('INVALID_URI', 94, "Invalid URI syntax: '{0}'");
 
   /**
    * 13.13 Break: It is a compile-time error if no such statement <i>s<sub>E</sub></i> exists within
    * the innermost function in which <i>s<sub>b</sub></i> occurs.
    *
    * 13.14 Continue: It is a compile-time error if no such statement or case clause
    * <i>s<sub>E</sub></i> exists within the innermost function in which <i>s<sub>c</sub></i> occurs.
    *
    * @param labelName the name of the unresolvable label
    */
-  static const CompileTimeErrorCode LABEL_IN_OUTER_SCOPE = const CompileTimeErrorCode.con1('LABEL_IN_OUTER_SCOPE', 90, "Cannot reference label '{0}' declared in an outer method");
+  static const CompileTimeErrorCode LABEL_IN_OUTER_SCOPE = const CompileTimeErrorCode.con1('LABEL_IN_OUTER_SCOPE', 95, "Cannot reference label '{0}' declared in an outer method");
 
   /**
    * 13.13 Break: It is a compile-time error if no such statement <i>s<sub>E</sub></i> exists within
    * the innermost function in which <i>s<sub>b</sub></i> occurs.
    *
    * 13.14 Continue: It is a compile-time error if no such statement or case clause
    * <i>s<sub>E</sub></i> exists within the innermost function in which <i>s<sub>c</sub></i> occurs.
    *
    * @param labelName the name of the unresolvable label
    */
-  static const CompileTimeErrorCode LABEL_UNDEFINED = const CompileTimeErrorCode.con1('LABEL_UNDEFINED', 91, "Cannot reference undefined label '{0}'");
+  static const CompileTimeErrorCode LABEL_UNDEFINED = const CompileTimeErrorCode.con1('LABEL_UNDEFINED', 96, "Cannot reference undefined label '{0}'");
 
   /**
    * 12.6 Lists: A run-time list literal &lt;<i>E</i>&gt; [<i>e<sub>1</sub></i> ...
    * <i>e<sub>n</sub></i>] is evaluated as follows:
    * * The operator []= is invoked on <i>a</i> with first argument <i>i</i> and second argument
    * <i>o<sub>i+1</sub></i><i>, 1 &lt;= i &lt;= n</i>
    *
    * 12.14.2 Binding Actuals to Formals: Let <i>T<sub>i</sub></i> be the static type of
    * <i>a<sub>i</sub></i>, let <i>S<sub>i</sub></i> be the type of <i>p<sub>i</sub>, 1 &lt;= i &lt;=
    * n+k</i> and let <i>S<sub>q</sub></i> be the type of the named parameter <i>q</i> of <i>f</i>.
    * It is a static warning if <i>T<sub>j</sub></i> may not be assigned to <i>S<sub>j</sub>, 1 &lt;=
    * j &lt;= m</i>.
    */
-  static const CompileTimeErrorCode LIST_ELEMENT_TYPE_NOT_ASSIGNABLE = const CompileTimeErrorCode.con1('LIST_ELEMENT_TYPE_NOT_ASSIGNABLE', 92, "The element type '{0}' cannot be assigned to the list type '{1}'");
+  static const CompileTimeErrorCode LIST_ELEMENT_TYPE_NOT_ASSIGNABLE = const CompileTimeErrorCode.con1('LIST_ELEMENT_TYPE_NOT_ASSIGNABLE', 97, "The element type '{0}' cannot be assigned to the list type '{1}'");
 
   /**
    * 12.7 Map: A run-time map literal &lt;<i>K</i>, <i>V</i>&gt; [<i>k<sub>1</sub></i> :
    * <i>e<sub>1</sub></i> ... <i>k<sub>n</sub></i> : <i>e<sub>n</sub></i>] is evaluated as follows:
    * * The operator []= is invoked on <i>m</i> with first argument <i>k<sub>i</sub></i> and second
    * argument <i>e<sub>i</sub></i><i>, 1 &lt;= i &lt;= n</i>
    *
    * 12.14.2 Binding Actuals to Formals: Let <i>T<sub>i</sub></i> be the static type of
    * <i>a<sub>i</sub></i>, let <i>S<sub>i</sub></i> be the type of <i>p<sub>i</sub>, 1 &lt;= i &lt;=
    * n+k</i> and let <i>S<sub>q</sub></i> be the type of the named parameter <i>q</i> of <i>f</i>.
    * It is a static warning if <i>T<sub>j</sub></i> may not be assigned to <i>S<sub>j</sub>, 1 &lt;=
    * j &lt;= m</i>.
    */
-  static const CompileTimeErrorCode MAP_KEY_TYPE_NOT_ASSIGNABLE = const CompileTimeErrorCode.con1('MAP_KEY_TYPE_NOT_ASSIGNABLE', 93, "The element type '{0}' cannot be assigned to the map key type '{1}'");
+  static const CompileTimeErrorCode MAP_KEY_TYPE_NOT_ASSIGNABLE = const CompileTimeErrorCode.con1('MAP_KEY_TYPE_NOT_ASSIGNABLE', 98, "The element type '{0}' cannot be assigned to the map key type '{1}'");
 
   /**
    * 12.7 Map: A run-time map literal &lt;<i>K</i>, <i>V</i>&gt; [<i>k<sub>1</sub></i> :
    * <i>e<sub>1</sub></i> ... <i>k<sub>n</sub></i> : <i>e<sub>n</sub></i>] is evaluated as follows:
    * * The operator []= is invoked on <i>m</i> with first argument <i>k<sub>i</sub></i> and second
    * argument <i>e<sub>i</sub></i><i>, 1 &lt;= i &lt;= n</i>
    *
    * 12.14.2 Binding Actuals to Formals: Let <i>T<sub>i</sub></i> be the static type of
    * <i>a<sub>i</sub></i>, let <i>S<sub>i</sub></i> be the type of <i>p<sub>i</sub>, 1 &lt;= i &lt;=
    * n+k</i> and let <i>S<sub>q</sub></i> be the type of the named parameter <i>q</i> of <i>f</i>.
    * It is a static warning if <i>T<sub>j</sub></i> may not be assigned to <i>S<sub>j</sub>, 1 &lt;=
    * j &lt;= m</i>.
    */
-  static const CompileTimeErrorCode MAP_VALUE_TYPE_NOT_ASSIGNABLE = const CompileTimeErrorCode.con1('MAP_VALUE_TYPE_NOT_ASSIGNABLE', 94, "The element type '{0}' cannot be assigned to the map value type '{1}'");
+  static const CompileTimeErrorCode MAP_VALUE_TYPE_NOT_ASSIGNABLE = const CompileTimeErrorCode.con1('MAP_VALUE_TYPE_NOT_ASSIGNABLE', 99, "The element type '{0}' cannot be assigned to the map value type '{1}'");
 
   /**
    * 7 Classes: It is a compile time error if a class <i>C</i> declares a member with the same name
    * as <i>C</i>.
    */
-  static const CompileTimeErrorCode MEMBER_WITH_CLASS_NAME = const CompileTimeErrorCode.con1('MEMBER_WITH_CLASS_NAME', 95, "Class members cannot have the same name as the enclosing class");
+  static const CompileTimeErrorCode MEMBER_WITH_CLASS_NAME = const CompileTimeErrorCode.con1('MEMBER_WITH_CLASS_NAME', 100, "Class members cannot have the same name as the enclosing class");
 
   /**
    * 7.2 Getters: It is a compile-time error if a class has both a getter and a method with the same
    * name.
    *
    * @param name the conflicting name of the getter and method
    */
-  static const CompileTimeErrorCode METHOD_AND_GETTER_WITH_SAME_NAME = const CompileTimeErrorCode.con1('METHOD_AND_GETTER_WITH_SAME_NAME', 96, "'{0}' cannot be used to name a method, there is already a getter with the same name");
+  static const CompileTimeErrorCode METHOD_AND_GETTER_WITH_SAME_NAME = const CompileTimeErrorCode.con1('METHOD_AND_GETTER_WITH_SAME_NAME', 101, "'{0}' cannot be used to name a method, there is already a getter with the same name");
 
   /**
    * 12.1 Constants: A constant expression is ... a constant list literal.
    */
-  static const CompileTimeErrorCode MISSING_CONST_IN_LIST_LITERAL = const CompileTimeErrorCode.con1('MISSING_CONST_IN_LIST_LITERAL', 97, "List literals must be prefixed with 'const' when used as a constant expression");
+  static const CompileTimeErrorCode MISSING_CONST_IN_LIST_LITERAL = const CompileTimeErrorCode.con1('MISSING_CONST_IN_LIST_LITERAL', 102, "List literals must be prefixed with 'const' when used as a constant expression");
 
   /**
    * 12.1 Constants: A constant expression is ... a constant map literal.
    */
-  static const CompileTimeErrorCode MISSING_CONST_IN_MAP_LITERAL = const CompileTimeErrorCode.con1('MISSING_CONST_IN_MAP_LITERAL', 98, "Map literals must be prefixed with 'const' when used as a constant expression");
+  static const CompileTimeErrorCode MISSING_CONST_IN_MAP_LITERAL = const CompileTimeErrorCode.con1('MISSING_CONST_IN_MAP_LITERAL', 103, "Map literals must be prefixed with 'const' when used as a constant expression");
 
   /**
    * Enum proposal: It is a static warning if all of the following conditions hold:
    * * The switch statement does not have a 'default' clause.
    * * The static type of <i>e</i> is an enumerated typed with elements <i>id<sub>1</sub></i>,
    * &hellip;, <i>id<sub>n</sub></i>.
    * * The sets {<i>e<sub>1</sub></i>, &hellip;, <i>e<sub>k</sub></i>} and {<i>id<sub>1</sub></i>,
    * &hellip;, <i>id<sub>n</sub></i>} are not the same.
    *
    * @param constantName the name of the constant that is missing
    */
-  static const CompileTimeErrorCode MISSING_ENUM_CONSTANT_IN_SWITCH = const CompileTimeErrorCode.con2('MISSING_ENUM_CONSTANT_IN_SWITCH', 99, "Missing case clause for '{0}'", "Add a case clause for the missing constant or add a default clause.");
+  static const CompileTimeErrorCode MISSING_ENUM_CONSTANT_IN_SWITCH = const CompileTimeErrorCode.con2('MISSING_ENUM_CONSTANT_IN_SWITCH', 104, "Missing case clause for '{0}'", "Add a case clause for the missing constant or add a default clause.");
 
   /**
    * 9 Mixins: It is a compile-time error if a declared or derived mixin explicitly declares a
    * constructor.
    *
    * @param typeName the name of the mixin that is invalid
    */
-  static const CompileTimeErrorCode MIXIN_DECLARES_CONSTRUCTOR = const CompileTimeErrorCode.con1('MIXIN_DECLARES_CONSTRUCTOR', 100, "The class '{0}' cannot be used as a mixin because it declares a constructor");
+  static const CompileTimeErrorCode MIXIN_DECLARES_CONSTRUCTOR = const CompileTimeErrorCode.con1('MIXIN_DECLARES_CONSTRUCTOR', 105, "The class '{0}' cannot be used as a mixin because it declares a constructor");
 
   /**
    * 9.1 Mixin Application: It is a compile-time error if the with clause of a mixin application
    * <i>C</i> includes a deferred type expression.
    *
    * @param typeName the name of the type that cannot be extended
    * @see #EXTENDS_DEFERRED_CLASS
    * @see #IMPLEMENTS_DEFERRED_CLASS
    */
-  static const CompileTimeErrorCode MIXIN_DEFERRED_CLASS = const CompileTimeErrorCode.con1('MIXIN_DEFERRED_CLASS', 101, "This class cannot mixin the deferred class '{0}'");
+  static const CompileTimeErrorCode MIXIN_DEFERRED_CLASS = const CompileTimeErrorCode.con1('MIXIN_DEFERRED_CLASS', 106, "This class cannot mixin the deferred class '{0}'");
 
   /**
    * 9 Mixins: It is a compile-time error if a mixin is derived from a class whose superclass is not
    * Object.
    *
    * @param typeName the name of the mixin that is invalid
    */
-  static const CompileTimeErrorCode MIXIN_INHERITS_FROM_NOT_OBJECT = const CompileTimeErrorCode.con1('MIXIN_INHERITS_FROM_NOT_OBJECT', 102, "The class '{0}' cannot be used as a mixin because it extends a class other than Object");
+  static const CompileTimeErrorCode MIXIN_INHERITS_FROM_NOT_OBJECT = const CompileTimeErrorCode.con1('MIXIN_INHERITS_FROM_NOT_OBJECT', 107, "The class '{0}' cannot be used as a mixin because it extends a class other than Object");
 
   /**
    * 12.2 Null: It is a compile-time error for a class to attempt to extend or implement Null.
    *
    * 12.3 Numbers: It is a compile-time error for a class to attempt to extend or implement int.
    *
    * 12.3 Numbers: It is a compile-time error for a class to attempt to extend or implement double.
    *
    * 12.3 Numbers: It is a compile-time error for any type other than the types int and double to
    * attempt to extend or implement num.
    *
    * 12.4 Booleans: It is a compile-time error for a class to attempt to extend or implement bool.
    *
    * 12.5 Strings: It is a compile-time error for a class to attempt to extend or implement String.
    *
    * @param typeName the name of the type that cannot be extended
    * @see #IMPLEMENTS_DISALLOWED_CLASS
    */
-  static const CompileTimeErrorCode MIXIN_OF_DISALLOWED_CLASS = const CompileTimeErrorCode.con1('MIXIN_OF_DISALLOWED_CLASS', 103, "Classes cannot mixin '{0}'");
+  static const CompileTimeErrorCode MIXIN_OF_DISALLOWED_CLASS = const CompileTimeErrorCode.con1('MIXIN_OF_DISALLOWED_CLASS', 108, "Classes cannot mixin '{0}'");
 
   /**
    * Enum proposal: It is a compile-time error to subclass, mix-in or implement an enum.
    */
-  static const CompileTimeErrorCode MIXIN_OF_ENUM = const CompileTimeErrorCode.con1('MIXIN_OF_ENUM', 104, "Classes cannot mixin an enum");
+  static const CompileTimeErrorCode MIXIN_OF_ENUM = const CompileTimeErrorCode.con1('MIXIN_OF_ENUM', 109, "Classes cannot mixin an enum");
 
   /**
    * 9.1 Mixin Application: It is a compile-time error if <i>M</i> does not denote a class or mixin
    * available in the immediately enclosing scope.
    */
-  static const CompileTimeErrorCode MIXIN_OF_NON_CLASS = const CompileTimeErrorCode.con1('MIXIN_OF_NON_CLASS', 105, "Classes can only mixin other classes");
+  static const CompileTimeErrorCode MIXIN_OF_NON_CLASS = const CompileTimeErrorCode.con1('MIXIN_OF_NON_CLASS', 110, "Classes can only mixin other classes");
 
   /**
    * 9 Mixins: It is a compile-time error if a declared or derived mixin refers to super.
    */
-  static const CompileTimeErrorCode MIXIN_REFERENCES_SUPER = const CompileTimeErrorCode.con1('MIXIN_REFERENCES_SUPER', 106, "The class '{0}' cannot be used as a mixin because it references 'super'");
+  static const CompileTimeErrorCode MIXIN_REFERENCES_SUPER = const CompileTimeErrorCode.con1('MIXIN_REFERENCES_SUPER', 111, "The class '{0}' cannot be used as a mixin because it references 'super'");
 
   /**
    * 9.1 Mixin Application: It is a compile-time error if <i>S</i> does not denote a class available
    * in the immediately enclosing scope.
    */
-  static const CompileTimeErrorCode MIXIN_WITH_NON_CLASS_SUPERCLASS = const CompileTimeErrorCode.con1('MIXIN_WITH_NON_CLASS_SUPERCLASS', 107, "Mixin can only be applied to class");
+  static const CompileTimeErrorCode MIXIN_WITH_NON_CLASS_SUPERCLASS = const CompileTimeErrorCode.con1('MIXIN_WITH_NON_CLASS_SUPERCLASS', 112, "Mixin can only be applied to class");
 
   /**
    * 7.6.1 Generative Constructors: A generative constructor may be redirecting, in which case its
    * only action is to invoke another generative constructor.
    */
-  static const CompileTimeErrorCode MULTIPLE_REDIRECTING_CONSTRUCTOR_INVOCATIONS = const CompileTimeErrorCode.con1('MULTIPLE_REDIRECTING_CONSTRUCTOR_INVOCATIONS', 108, "Constructor may have at most one 'this' redirection");
+  static const CompileTimeErrorCode MULTIPLE_REDIRECTING_CONSTRUCTOR_INVOCATIONS = const CompileTimeErrorCode.con1('MULTIPLE_REDIRECTING_CONSTRUCTOR_INVOCATIONS', 113, "Constructor may have at most one 'this' redirection");
 
   /**
    * 7.6.1 Generative Constructors: Let <i>k</i> be a generative constructor. Then <i>k</i> may
    * include at most one superinitializer in its initializer list or a compile time error occurs.
    */
-  static const CompileTimeErrorCode MULTIPLE_SUPER_INITIALIZERS = const CompileTimeErrorCode.con1('MULTIPLE_SUPER_INITIALIZERS', 109, "Constructor may have at most one 'super' initializer");
+  static const CompileTimeErrorCode MULTIPLE_SUPER_INITIALIZERS = const CompileTimeErrorCode.con1('MULTIPLE_SUPER_INITIALIZERS', 114, "Constructor may have at most one 'super' initializer");
 
   /**
    * 11 Metadata: Metadata consists of a series of annotations, each of which begin with the
    * character @, followed by a constant expression that must be either a reference to a
    * compile-time constant variable, or a call to a constant constructor.
    */
-  static const CompileTimeErrorCode NO_ANNOTATION_CONSTRUCTOR_ARGUMENTS = const CompileTimeErrorCode.con1('NO_ANNOTATION_CONSTRUCTOR_ARGUMENTS', 110, "Annotation creation must have arguments");
+  static const CompileTimeErrorCode NO_ANNOTATION_CONSTRUCTOR_ARGUMENTS = const CompileTimeErrorCode.con1('NO_ANNOTATION_CONSTRUCTOR_ARGUMENTS', 115, "Annotation creation must have arguments");
 
   /**
    * 7.6.1 Generative Constructors: If no superinitializer is provided, an implicit superinitializer
    * of the form <b>super</b>() is added at the end of <i>k</i>'s initializer list, unless the
    * enclosing class is class <i>Object</i>.
    *
    * 7.6.1 Generative constructors. It is a compile-time error if class <i>S</i> does not declare a
    * generative constructor named <i>S</i> (respectively <i>S.id</i>)
    */
-  static const CompileTimeErrorCode NO_DEFAULT_SUPER_CONSTRUCTOR_EXPLICIT = const CompileTimeErrorCode.con1('NO_DEFAULT_SUPER_CONSTRUCTOR_EXPLICIT', 111, "The class '{0}' does not have a default constructor");
+  static const CompileTimeErrorCode NO_DEFAULT_SUPER_CONSTRUCTOR_EXPLICIT = const CompileTimeErrorCode.con1('NO_DEFAULT_SUPER_CONSTRUCTOR_EXPLICIT', 116, "The class '{0}' does not have a default constructor");
 
   /**
    * 7.6 Constructors: Iff no constructor is specified for a class <i>C</i>, it implicitly has a
    * default constructor C() : <b>super<b>() {}, unless <i>C</i> is class <i>Object</i>.
    *
    * 7.6.1 Generative constructors. It is a compile-time error if class <i>S</i> does not declare a
    * generative constructor named <i>S</i> (respectively <i>S.id</i>)
    */
-  static const CompileTimeErrorCode NO_DEFAULT_SUPER_CONSTRUCTOR_IMPLICIT = const CompileTimeErrorCode.con1('NO_DEFAULT_SUPER_CONSTRUCTOR_IMPLICIT', 112, "The class '{0}' does not have a default constructor");
+  static const CompileTimeErrorCode NO_DEFAULT_SUPER_CONSTRUCTOR_IMPLICIT = const CompileTimeErrorCode.con1('NO_DEFAULT_SUPER_CONSTRUCTOR_IMPLICIT', 117, "The class '{0}' does not have a default constructor");
 
   /**
    * 13.2 Expression Statements: It is a compile-time error if a non-constant map literal that has
    * no explicit type arguments appears in a place where a statement is expected.
    */
-  static const CompileTimeErrorCode NON_CONST_MAP_AS_EXPRESSION_STATEMENT = const CompileTimeErrorCode.con1('NON_CONST_MAP_AS_EXPRESSION_STATEMENT', 113, "A non-constant map literal without type arguments cannot be used as an expression statement");
+  static const CompileTimeErrorCode NON_CONST_MAP_AS_EXPRESSION_STATEMENT = const CompileTimeErrorCode.con1('NON_CONST_MAP_AS_EXPRESSION_STATEMENT', 118, "A non-constant map literal without type arguments cannot be used as an expression statement");
 
   /**
    * 13.9 Switch: Given a switch statement of the form <i>switch (e) { label<sub>11</sub> &hellip;
    * label<sub>1j1</sub> case e<sub>1</sub>: s<sub>1</sub> &hellip; label<sub>n1</sub> &hellip;
    * label<sub>njn</sub> case e<sub>n</sub>: s<sub>n</sub> default: s<sub>n+1</sub>}</i> or the form
    * <i>switch (e) { label<sub>11</sub> &hellip; label<sub>1j1</sub> case e<sub>1</sub>:
    * s<sub>1</sub> &hellip; label<sub>n1</sub> &hellip; label<sub>njn</sub> case e<sub>n</sub>:
    * s<sub>n</sub>}</i>, it is a compile-time error if the expressions <i>e<sub>k</sub></i> are not
    * compile-time constants, for all <i>1 &lt;= k &lt;= n</i>.
    */
-  static const CompileTimeErrorCode NON_CONSTANT_CASE_EXPRESSION = const CompileTimeErrorCode.con1('NON_CONSTANT_CASE_EXPRESSION', 114, "Case expressions must be constant");
+  static const CompileTimeErrorCode NON_CONSTANT_CASE_EXPRESSION = const CompileTimeErrorCode.con1('NON_CONSTANT_CASE_EXPRESSION', 119, "Case expressions must be constant");
 
   /**
    * 13.9 Switch: Given a switch statement of the form <i>switch (e) { label<sub>11</sub> &hellip;
    * label<sub>1j1</sub> case e<sub>1</sub>: s<sub>1</sub> &hellip; label<sub>n1</sub> &hellip;
    * label<sub>njn</sub> case e<sub>n</sub>: s<sub>n</sub> default: s<sub>n+1</sub>}</i> or the form
    * <i>switch (e) { label<sub>11</sub> &hellip; label<sub>1j1</sub> case e<sub>1</sub>:
    * s<sub>1</sub> &hellip; label<sub>n1</sub> &hellip; label<sub>njn</sub> case e<sub>n</sub>:
    * s<sub>n</sub>}</i>, it is a compile-time error if the expressions <i>e<sub>k</sub></i> are not
    * compile-time constants, for all <i>1 &lt;= k &lt;= n</i>.
    *
    * 12.1 Constants: A qualified reference to a static constant variable that is not qualified by a
    * deferred prefix.
    */
-  static const CompileTimeErrorCode NON_CONSTANT_CASE_EXPRESSION_FROM_DEFERRED_LIBRARY = const CompileTimeErrorCode.con1('NON_CONSTANT_CASE_EXPRESSION_FROM_DEFERRED_LIBRARY', 115, "Constant values from a deferred library cannot be used as a case expression");
+  static const CompileTimeErrorCode NON_CONSTANT_CASE_EXPRESSION_FROM_DEFERRED_LIBRARY = const CompileTimeErrorCode.con1('NON_CONSTANT_CASE_EXPRESSION_FROM_DEFERRED_LIBRARY', 120, "Constant values from a deferred library cannot be used as a case expression");
 
   /**
    * 6.2.2 Optional Formals: It is a compile-time error if the default value of an optional
    * parameter is not a compile-time constant.
    */
-  static const CompileTimeErrorCode NON_CONSTANT_DEFAULT_VALUE = const CompileTimeErrorCode.con1('NON_CONSTANT_DEFAULT_VALUE', 116, "Default values of an optional parameter must be constant");
+  static const CompileTimeErrorCode NON_CONSTANT_DEFAULT_VALUE = const CompileTimeErrorCode.con1('NON_CONSTANT_DEFAULT_VALUE', 121, "Default values of an optional parameter must be constant");
 
   /**
    * 6.2.2 Optional Formals: It is a compile-time error if the default value of an optional
    * parameter is not a compile-time constant.
    *
    * 12.1 Constants: A qualified reference to a static constant variable that is not qualified by a
    * deferred prefix.
    */
-  static const CompileTimeErrorCode NON_CONSTANT_DEFAULT_VALUE_FROM_DEFERRED_LIBRARY = const CompileTimeErrorCode.con1('NON_CONSTANT_DEFAULT_VALUE_FROM_DEFERRED_LIBRARY', 117, "Constant values from a deferred library cannot be used as a default parameter value");
+  static const CompileTimeErrorCode NON_CONSTANT_DEFAULT_VALUE_FROM_DEFERRED_LIBRARY = const CompileTimeErrorCode.con1('NON_CONSTANT_DEFAULT_VALUE_FROM_DEFERRED_LIBRARY', 122, "Constant values from a deferred library cannot be used as a default parameter value");
 
   /**
    * 12.6 Lists: It is a compile time error if an element of a constant list literal is not a
    * compile-time constant.
    */
-  static const CompileTimeErrorCode NON_CONSTANT_LIST_ELEMENT = const CompileTimeErrorCode.con1('NON_CONSTANT_LIST_ELEMENT', 118, "'const' lists must have all constant values");
+  static const CompileTimeErrorCode NON_CONSTANT_LIST_ELEMENT = const CompileTimeErrorCode.con1('NON_CONSTANT_LIST_ELEMENT', 123, "'const' lists must have all constant values");
 
   /**
    * 12.6 Lists: It is a compile time error if an element of a constant list literal is not a
    * compile-time constant.
    *
    * 12.1 Constants: A qualified reference to a static constant variable that is not qualified by a
    * deferred prefix.
    */
-  static const CompileTimeErrorCode NON_CONSTANT_LIST_ELEMENT_FROM_DEFERRED_LIBRARY = const CompileTimeErrorCode.con1('NON_CONSTANT_LIST_ELEMENT_FROM_DEFERRED_LIBRARY', 119, "Constant values from a deferred library cannot be used as values in a 'const' list");
+  static const CompileTimeErrorCode NON_CONSTANT_LIST_ELEMENT_FROM_DEFERRED_LIBRARY = const CompileTimeErrorCode.con1('NON_CONSTANT_LIST_ELEMENT_FROM_DEFERRED_LIBRARY', 124, "Constant values from a deferred library cannot be used as values in a 'const' list");
 
   /**
    * 12.7 Maps: It is a compile time error if either a key or a value of an entry in a constant map
    * literal is not a compile-time constant.
    */
-  static const CompileTimeErrorCode NON_CONSTANT_MAP_KEY = const CompileTimeErrorCode.con1('NON_CONSTANT_MAP_KEY', 120, "The keys in a map must be constant");
+  static const CompileTimeErrorCode NON_CONSTANT_MAP_KEY = const CompileTimeErrorCode.con1('NON_CONSTANT_MAP_KEY', 125, "The keys in a map must be constant");
 
   /**
    * 12.7 Maps: It is a compile time error if either a key or a value of an entry in a constant map
    * literal is not a compile-time constant.
    *
    * 12.1 Constants: A qualified reference to a static constant variable that is not qualified by a
    * deferred prefix.
    */
-  static const CompileTimeErrorCode NON_CONSTANT_MAP_KEY_FROM_DEFERRED_LIBRARY = const CompileTimeErrorCode.con1('NON_CONSTANT_MAP_KEY_FROM_DEFERRED_LIBRARY', 121, "Constant values from a deferred library cannot be used as keys in a map");
+  static const CompileTimeErrorCode NON_CONSTANT_MAP_KEY_FROM_DEFERRED_LIBRARY = const CompileTimeErrorCode.con1('NON_CONSTANT_MAP_KEY_FROM_DEFERRED_LIBRARY', 126, "Constant values from a deferred library cannot be used as keys in a map");
 
   /**
    * 12.7 Maps: It is a compile time error if either a key or a value of an entry in a constant map
    * literal is not a compile-time constant.
    */
-  static const CompileTimeErrorCode NON_CONSTANT_MAP_VALUE = const CompileTimeErrorCode.con1('NON_CONSTANT_MAP_VALUE', 122, "The values in a 'const' map must be constant");
+  static const CompileTimeErrorCode NON_CONSTANT_MAP_VALUE = const CompileTimeErrorCode.con1('NON_CONSTANT_MAP_VALUE', 127, "The values in a 'const' map must be constant");
 
   /**
    * 12.7 Maps: It is a compile time error if either a key or a value of an entry in a constant map
    * literal is not a compile-time constant.
    *
    * 12.1 Constants: A qualified reference to a static constant variable that is not qualified by a
    * deferred prefix.
    */
-  static const CompileTimeErrorCode NON_CONSTANT_MAP_VALUE_FROM_DEFERRED_LIBRARY = const CompileTimeErrorCode.con1('NON_CONSTANT_MAP_VALUE_FROM_DEFERRED_LIBRARY', 123, "Constant values from a deferred library cannot be used as values in a 'const' map");
+  static const CompileTimeErrorCode NON_CONSTANT_MAP_VALUE_FROM_DEFERRED_LIBRARY = const CompileTimeErrorCode.con1('NON_CONSTANT_MAP_VALUE_FROM_DEFERRED_LIBRARY', 128, "Constant values from a deferred library cannot be used as values in a 'const' map");
 
   /**
    * 11 Metadata: Metadata consists of a series of annotations, each of which begin with the
    * character @, followed by a constant expression that must be either a reference to a
    * compile-time constant variable, or a call to a constant constructor.
    *
    * "From deferred library" case is covered by
    * [CompileTimeErrorCode#INVALID_ANNOTATION_FROM_DEFERRED_LIBRARY].
    */
-  static const CompileTimeErrorCode NON_CONSTANT_ANNOTATION_CONSTRUCTOR = const CompileTimeErrorCode.con1('NON_CONSTANT_ANNOTATION_CONSTRUCTOR', 124, "Annotation creation can use only 'const' constructor");
+  static const CompileTimeErrorCode NON_CONSTANT_ANNOTATION_CONSTRUCTOR = const CompileTimeErrorCode.con1('NON_CONSTANT_ANNOTATION_CONSTRUCTOR', 129, "Annotation creation can use only 'const' constructor");
 
   /**
    * 7.6.3 Constant Constructors: Any expression that appears within the initializer list of a
    * constant constructor must be a potentially constant expression, or a compile-time error occurs.
    */
-  static const CompileTimeErrorCode NON_CONSTANT_VALUE_IN_INITIALIZER = const CompileTimeErrorCode.con1('NON_CONSTANT_VALUE_IN_INITIALIZER', 125, "Initializer expressions in constant constructors must be constants");
+  static const CompileTimeErrorCode NON_CONSTANT_VALUE_IN_INITIALIZER = const CompileTimeErrorCode.con1('NON_CONSTANT_VALUE_IN_INITIALIZER', 130, "Initializer expressions in constant constructors must be constants");
 
   /**
    * 7.6.3 Constant Constructors: Any expression that appears within the initializer list of a
    * constant constructor must be a potentially constant expression, or a compile-time error occurs.
    *
    * 12.1 Constants: A qualified reference to a static constant variable that is not qualified by a
    * deferred prefix.
    */
-  static const CompileTimeErrorCode NON_CONSTANT_VALUE_IN_INITIALIZER_FROM_DEFERRED_LIBRARY = const CompileTimeErrorCode.con1('NON_CONSTANT_VALUE_IN_INITIALIZER_FROM_DEFERRED_LIBRARY', 126, "Constant values from a deferred library cannot be used as constant initializers");
+  static const CompileTimeErrorCode NON_CONSTANT_VALUE_IN_INITIALIZER_FROM_DEFERRED_LIBRARY = const CompileTimeErrorCode.con1('NON_CONSTANT_VALUE_IN_INITIALIZER_FROM_DEFERRED_LIBRARY', 131, "Constant values from a deferred library cannot be used as constant initializers");
 
   /**
    * 12.14.2 Binding Actuals to Formals: It is a static warning if <i>m < h</i> or if <i>m > n</i>.
    *
    * 12.11.2 Const: It is a compile-time error if evaluation of a constant object results in an
    * uncaught exception being thrown.
    *
    * @param requiredCount the expected number of required arguments
    * @param argumentCount the actual number of positional arguments given
    */
-  static const CompileTimeErrorCode NOT_ENOUGH_REQUIRED_ARGUMENTS = const CompileTimeErrorCode.con1('NOT_ENOUGH_REQUIRED_ARGUMENTS', 127, "{0} required argument(s) expected, but {1} found");
+  static const CompileTimeErrorCode NOT_ENOUGH_REQUIRED_ARGUMENTS = const CompileTimeErrorCode.con1('NOT_ENOUGH_REQUIRED_ARGUMENTS', 132, "{0} required argument(s) expected, but {1} found");
 
   /**
    * 7.6.1 Generative Constructors: Let <i>C</i> be the class in which the superinitializer appears
    * and let <i>S</i> be the superclass of <i>C</i>. Let <i>k</i> be a generative constructor. It is
    * a compile-time error if class <i>S</i> does not declare a generative constructor named <i>S</i>
    * (respectively <i>S.id</i>)
    */
-  static const CompileTimeErrorCode NON_GENERATIVE_CONSTRUCTOR = const CompileTimeErrorCode.con1('NON_GENERATIVE_CONSTRUCTOR', 128, "The generative constructor '{0}' expected, but factory found");
+  static const CompileTimeErrorCode NON_GENERATIVE_CONSTRUCTOR = const CompileTimeErrorCode.con1('NON_GENERATIVE_CONSTRUCTOR', 133, "The generative constructor '{0}' expected, but factory found");
 
   /**
    * 7.9 Superclasses: It is a compile-time error to specify an extends clause for class Object.
    */
-  static const CompileTimeErrorCode OBJECT_CANNOT_EXTEND_ANOTHER_CLASS = const CompileTimeErrorCode.con1('OBJECT_CANNOT_EXTEND_ANOTHER_CLASS', 129, "");
+  static const CompileTimeErrorCode OBJECT_CANNOT_EXTEND_ANOTHER_CLASS = const CompileTimeErrorCode.con1('OBJECT_CANNOT_EXTEND_ANOTHER_CLASS', 134, "");
 
   /**
    * 7.1.1 Operators: It is a compile-time error to declare an optional parameter in an operator.
    */
-  static const CompileTimeErrorCode OPTIONAL_PARAMETER_IN_OPERATOR = const CompileTimeErrorCode.con1('OPTIONAL_PARAMETER_IN_OPERATOR', 130, "Optional parameters are not allowed when defining an operator");
+  static const CompileTimeErrorCode OPTIONAL_PARAMETER_IN_OPERATOR = const CompileTimeErrorCode.con1('OPTIONAL_PARAMETER_IN_OPERATOR', 135, "Optional parameters are not allowed when defining an operator");
 
   /**
    * 14.3 Parts: It is a compile time error if the contents of the URI are not a valid part
    * declaration.
    *
    * @param uri the uri pointing to a non-library declaration
    */
-  static const CompileTimeErrorCode PART_OF_NON_PART = const CompileTimeErrorCode.con1('PART_OF_NON_PART', 131, "The included part '{0}' must have a part-of directive");
+  static const CompileTimeErrorCode PART_OF_NON_PART = const CompileTimeErrorCode.con1('PART_OF_NON_PART', 136, "The included part '{0}' must have a part-of directive");
 
   /**
    * 14.1 Imports: It is a compile-time error if the current library declares a top-level member
    * named <i>p</i>.
    */
-  static const CompileTimeErrorCode PREFIX_COLLIDES_WITH_TOP_LEVEL_MEMBER = const CompileTimeErrorCode.con1('PREFIX_COLLIDES_WITH_TOP_LEVEL_MEMBER', 132, "The name '{0}' is already used as an import prefix and cannot be used to name a top-level element");
+  static const CompileTimeErrorCode PREFIX_COLLIDES_WITH_TOP_LEVEL_MEMBER = const CompileTimeErrorCode.con1('PREFIX_COLLIDES_WITH_TOP_LEVEL_MEMBER', 137, "The name '{0}' is already used as an import prefix and cannot be used to name a top-level element");
 
   /**
    * 6.2.2 Optional Formals: It is a compile-time error if the name of a named optional parameter
    * begins with an '_' character.
    */
-  static const CompileTimeErrorCode PRIVATE_OPTIONAL_PARAMETER = const CompileTimeErrorCode.con1('PRIVATE_OPTIONAL_PARAMETER', 133, "Named optional parameters cannot start with an underscore");
+  static const CompileTimeErrorCode PRIVATE_OPTIONAL_PARAMETER = const CompileTimeErrorCode.con1('PRIVATE_OPTIONAL_PARAMETER', 138, "Named optional parameters cannot start with an underscore");
 
   /**
    * 12.1 Constants: It is a compile-time error if the value of a compile-time constant expression
    * depends on itself.
    */
-  static const CompileTimeErrorCode RECURSIVE_COMPILE_TIME_CONSTANT = const CompileTimeErrorCode.con1('RECURSIVE_COMPILE_TIME_CONSTANT', 134, "");
+  static const CompileTimeErrorCode RECURSIVE_COMPILE_TIME_CONSTANT = const CompileTimeErrorCode.con1('RECURSIVE_COMPILE_TIME_CONSTANT', 139, "");
 
   /**
    * 7.6.1 Generative Constructors: A generative constructor may be redirecting, in which case its
    * only action is to invoke another generative constructor.
    *
    * TODO(scheglov) review this later, there are no explicit "it is a compile-time error" in
    * specification. But it was added to the co19 and there is same error for factories.
    *
    * https://code.google.com/p/dart/issues/detail?id=954
    */
-  static const CompileTimeErrorCode RECURSIVE_CONSTRUCTOR_REDIRECT = const CompileTimeErrorCode.con1('RECURSIVE_CONSTRUCTOR_REDIRECT', 135, "Cycle in redirecting generative constructors");
+  static const CompileTimeErrorCode RECURSIVE_CONSTRUCTOR_REDIRECT = const CompileTimeErrorCode.con1('RECURSIVE_CONSTRUCTOR_REDIRECT', 140, "Cycle in redirecting generative constructors");
 
   /**
    * 7.6.2 Factories: It is a compile-time error if a redirecting factory constructor redirects to
    * itself, either directly or indirectly via a sequence of redirections.
    */
-  static const CompileTimeErrorCode RECURSIVE_FACTORY_REDIRECT = const CompileTimeErrorCode.con1('RECURSIVE_FACTORY_REDIRECT', 136, "Cycle in redirecting factory constructors");
+  static const CompileTimeErrorCode RECURSIVE_FACTORY_REDIRECT = const CompileTimeErrorCode.con1('RECURSIVE_FACTORY_REDIRECT', 141, "Cycle in redirecting factory constructors");
 
   /**
    * 7.10 Superinterfaces: It is a compile-time error if the interface of a class <i>C</i> is a
    * superinterface of itself.
    *
    * 8.1 Superinterfaces: It is a compile-time error if an interface is a superinterface of itself.
    *
    * 7.9 Superclasses: It is a compile-time error if a class <i>C</i> is a superclass of itself.
    *
    * @param className the name of the class that implements itself recursively
    * @param strImplementsPath a string representation of the implements loop
    */
-  static const CompileTimeErrorCode RECURSIVE_INTERFACE_INHERITANCE = const CompileTimeErrorCode.con1('RECURSIVE_INTERFACE_INHERITANCE', 137, "'{0}' cannot be a superinterface of itself: {1}");
+  static const CompileTimeErrorCode RECURSIVE_INTERFACE_INHERITANCE = const CompileTimeErrorCode.con1('RECURSIVE_INTERFACE_INHERITANCE', 142, "'{0}' cannot be a superinterface of itself: {1}");
 
   /**
    * 7.10 Superinterfaces: It is a compile-time error if the interface of a class <i>C</i> is a
    * superinterface of itself.
    *
    * 8.1 Superinterfaces: It is a compile-time error if an interface is a superinterface of itself.
    *
    * 7.9 Superclasses: It is a compile-time error if a class <i>C</i> is a superclass of itself.
    *
    * @param className the name of the class that implements itself recursively
    */
-  static const CompileTimeErrorCode RECURSIVE_INTERFACE_INHERITANCE_BASE_CASE_EXTENDS = const CompileTimeErrorCode.con1('RECURSIVE_INTERFACE_INHERITANCE_BASE_CASE_EXTENDS', 138, "'{0}' cannot extend itself");
+  static const CompileTimeErrorCode RECURSIVE_INTERFACE_INHERITANCE_BASE_CASE_EXTENDS = const CompileTimeErrorCode.con1('RECURSIVE_INTERFACE_INHERITANCE_BASE_CASE_EXTENDS', 143, "'{0}' cannot extend itself");
 
   /**
    * 7.10 Superinterfaces: It is a compile-time error if the interface of a class <i>C</i> is a
    * superinterface of itself.
    *
    * 8.1 Superinterfaces: It is a compile-time error if an interface is a superinterface of itself.
    *
    * 7.9 Superclasses: It is a compile-time error if a class <i>C</i> is a superclass of itself.
    *
    * @param className the name of the class that implements itself recursively
    */
-  static const CompileTimeErrorCode RECURSIVE_INTERFACE_INHERITANCE_BASE_CASE_IMPLEMENTS = const CompileTimeErrorCode.con1('RECURSIVE_INTERFACE_INHERITANCE_BASE_CASE_IMPLEMENTS', 139, "'{0}' cannot implement itself");
+  static const CompileTimeErrorCode RECURSIVE_INTERFACE_INHERITANCE_BASE_CASE_IMPLEMENTS = const CompileTimeErrorCode.con1('RECURSIVE_INTERFACE_INHERITANCE_BASE_CASE_IMPLEMENTS', 144, "'{0}' cannot implement itself");
 
   /**
    * 7.10 Superinterfaces: It is a compile-time error if the interface of a class <i>C</i> is a
    * superinterface of itself.
    *
    * 8.1 Superinterfaces: It is a compile-time error if an interface is a superinterface of itself.
    *
    * 7.9 Superclasses: It is a compile-time error if a class <i>C</i> is a superclass of itself.
    *
    * @param className the name of the class that implements itself recursively
    */
-  static const CompileTimeErrorCode RECURSIVE_INTERFACE_INHERITANCE_BASE_CASE_WITH = const CompileTimeErrorCode.con1('RECURSIVE_INTERFACE_INHERITANCE_BASE_CASE_WITH', 140, "'{0}' cannot use itself as a mixin");
+  static const CompileTimeErrorCode RECURSIVE_INTERFACE_INHERITANCE_BASE_CASE_WITH = const CompileTimeErrorCode.con1('RECURSIVE_INTERFACE_INHERITANCE_BASE_CASE_WITH', 145, "'{0}' cannot use itself as a mixin");
 
   /**
    * 7.6.2 Factories: It is a compile-time error if <i>k</i> is prefixed with the const modifier but
    * <i>k'</i> is not a constant constructor.
    */
-  static const CompileTimeErrorCode REDIRECT_TO_MISSING_CONSTRUCTOR = const CompileTimeErrorCode.con1('REDIRECT_TO_MISSING_CONSTRUCTOR', 141, "The constructor '{0}' could not be found in '{1}'");
+  static const CompileTimeErrorCode REDIRECT_TO_MISSING_CONSTRUCTOR = const CompileTimeErrorCode.con1('REDIRECT_TO_MISSING_CONSTRUCTOR', 146, "The constructor '{0}' could not be found in '{1}'");
 
   /**
    * 7.6.2 Factories: It is a compile-time error if <i>k</i> is prefixed with the const modifier but
    * <i>k'</i> is not a constant constructor.
    */
-  static const CompileTimeErrorCode REDIRECT_TO_NON_CLASS = const CompileTimeErrorCode.con1('REDIRECT_TO_NON_CLASS', 142, "The name '{0}' is not a type and cannot be used in a redirected constructor");
+  static const CompileTimeErrorCode REDIRECT_TO_NON_CLASS = const CompileTimeErrorCode.con1('REDIRECT_TO_NON_CLASS', 147, "The name '{0}' is not a type and cannot be used in a redirected constructor");
 
   /**
    * 7.6.2 Factories: It is a compile-time error if <i>k</i> is prefixed with the const modifier but
    * <i>k'</i> is not a constant constructor.
    */
-  static const CompileTimeErrorCode REDIRECT_TO_NON_CONST_CONSTRUCTOR = const CompileTimeErrorCode.con1('REDIRECT_TO_NON_CONST_CONSTRUCTOR', 143, "Constant factory constructor cannot delegate to a non-constant constructor");
+  static const CompileTimeErrorCode REDIRECT_TO_NON_CONST_CONSTRUCTOR = const CompileTimeErrorCode.con1('REDIRECT_TO_NON_CONST_CONSTRUCTOR', 148, "Constant factory constructor cannot delegate to a non-constant constructor");
 
   /**
    * 7.6.1 Generative constructors: A generative constructor may be <i>redirecting</i>, in which
    * case its only action is to invoke another generative constructor.
    */
-  static const CompileTimeErrorCode REDIRECT_GENERATIVE_TO_MISSING_CONSTRUCTOR = const CompileTimeErrorCode.con1('REDIRECT_GENERATIVE_TO_MISSING_CONSTRUCTOR', 144, "The constructor '{0}' could not be found in '{1}'");
+  static const CompileTimeErrorCode REDIRECT_GENERATIVE_TO_MISSING_CONSTRUCTOR = const CompileTimeErrorCode.con1('REDIRECT_GENERATIVE_TO_MISSING_CONSTRUCTOR', 149, "The constructor '{0}' could not be found in '{1}'");
 
   /**
    * 7.6.1 Generative constructors: A generative constructor may be <i>redirecting</i>, in which
    * case its only action is to invoke another generative constructor.
    */
-  static const CompileTimeErrorCode REDIRECT_GENERATIVE_TO_NON_GENERATIVE_CONSTRUCTOR = const CompileTimeErrorCode.con1('REDIRECT_GENERATIVE_TO_NON_GENERATIVE_CONSTRUCTOR', 145, "Generative constructor cannot redirect to a factory constructor");
+  static const CompileTimeErrorCode REDIRECT_GENERATIVE_TO_NON_GENERATIVE_CONSTRUCTOR = const CompileTimeErrorCode.con1('REDIRECT_GENERATIVE_TO_NON_GENERATIVE_CONSTRUCTOR', 150, "Generative constructor cannot redirect to a factory constructor");
 
   /**
    * 5 Variables: A local variable may only be referenced at a source code location that is after
    * its initializer, if any, is complete, or a compile-time error occurs.
    */
-  static const CompileTimeErrorCode REFERENCED_BEFORE_DECLARATION = const CompileTimeErrorCode.con1('REFERENCED_BEFORE_DECLARATION', 146, "Local variables cannot be referenced before they are declared");
+  static const CompileTimeErrorCode REFERENCED_BEFORE_DECLARATION = const CompileTimeErrorCode.con1('REFERENCED_BEFORE_DECLARATION', 151, "Local variables cannot be referenced before they are declared");
 
   /**
    * 12.8.1 Rethrow: It is a compile-time error if an expression of the form <i>rethrow;</i> is not
    * enclosed within a on-catch clause.
    */
-  static const CompileTimeErrorCode RETHROW_OUTSIDE_CATCH = const CompileTimeErrorCode.con1('RETHROW_OUTSIDE_CATCH', 147, "rethrow must be inside of a catch clause");
+  static const CompileTimeErrorCode RETHROW_OUTSIDE_CATCH = const CompileTimeErrorCode.con1('RETHROW_OUTSIDE_CATCH', 152, "rethrow must be inside of a catch clause");
 
   /**
    * 13.12 Return: It is a compile-time error if a return statement of the form <i>return e;</i>
    * appears in a generative constructor.
    */
-  static const CompileTimeErrorCode RETURN_IN_GENERATIVE_CONSTRUCTOR = const CompileTimeErrorCode.con1('RETURN_IN_GENERATIVE_CONSTRUCTOR', 148, "Constructors cannot return a value");
+  static const CompileTimeErrorCode RETURN_IN_GENERATIVE_CONSTRUCTOR = const CompileTimeErrorCode.con1('RETURN_IN_GENERATIVE_CONSTRUCTOR', 153, "Constructors cannot return a value");
+
+  /**
+   * 13.12 Return: It is a compile-time error if a return statement of the form <i>return e;</i>
+   * appears in a generator function.
+   */
+  static const CompileTimeErrorCode RETURN_IN_GENERATOR = const CompileTimeErrorCode.con1('RETURN_IN_GENERATOR', 154, "Cannot return a value from a generator function (one marked with either 'async*' or 'sync*')");
 
   /**
    * 14.1 Imports: It is a compile-time error if a prefix used in a deferred import is used in
    * another import clause.
    */
-  static const CompileTimeErrorCode SHARED_DEFERRED_PREFIX = const CompileTimeErrorCode.con1('SHARED_DEFERRED_PREFIX', 149, "The prefix of a deferred import cannot be used in other import directives");
+  static const CompileTimeErrorCode SHARED_DEFERRED_PREFIX = const CompileTimeErrorCode.con1('SHARED_DEFERRED_PREFIX', 155, "The prefix of a deferred import cannot be used in other import directives");
 
   /**
    * 12.15.4 Super Invocation: A super method invocation <i>i</i> has the form
    * <i>super.m(a<sub>1</sub>, &hellip;, a<sub>n</sub>, x<sub>n+1</sub>: a<sub>n+1</sub>, &hellip;
    * x<sub>n+k</sub>: a<sub>n+k</sub>)</i>. It is a compile-time error if a super method invocation
    * occurs in a top-level function or variable initializer, in an instance variable initializer or
    * initializer list, in class Object, in a factory constructor, or in a static method or variable
    * initializer.
    */
-  static const CompileTimeErrorCode SUPER_IN_INVALID_CONTEXT = const CompileTimeErrorCode.con1('SUPER_IN_INVALID_CONTEXT', 150, "Invalid context for 'super' invocation");
+  static const CompileTimeErrorCode SUPER_IN_INVALID_CONTEXT = const CompileTimeErrorCode.con1('SUPER_IN_INVALID_CONTEXT', 156, "Invalid context for 'super' invocation");
 
   /**
    * 7.6.1 Generative Constructors: A generative constructor may be redirecting, in which case its
    * only action is to invoke another generative constructor.
    */
-  static const CompileTimeErrorCode SUPER_IN_REDIRECTING_CONSTRUCTOR = const CompileTimeErrorCode.con1('SUPER_IN_REDIRECTING_CONSTRUCTOR', 151, "The redirecting constructor cannot have a 'super' initializer");
+  static const CompileTimeErrorCode SUPER_IN_REDIRECTING_CONSTRUCTOR = const CompileTimeErrorCode.con1('SUPER_IN_REDIRECTING_CONSTRUCTOR', 157, "The redirecting constructor cannot have a 'super' initializer");
 
   /**
    * 7.6.1 Generative Constructors: Let <i>k</i> be a generative constructor. It is a compile-time
    * error if a generative constructor of class Object includes a superinitializer.
    */
-  static const CompileTimeErrorCode SUPER_INITIALIZER_IN_OBJECT = const CompileTimeErrorCode.con1('SUPER_INITIALIZER_IN_OBJECT', 152, "");
+  static const CompileTimeErrorCode SUPER_INITIALIZER_IN_OBJECT = const CompileTimeErrorCode.con1('SUPER_INITIALIZER_IN_OBJECT', 158, "");
 
   /**
    * 12.11 Instance Creation: It is a static type warning if any of the type arguments to a
    * constructor of a generic type <i>G</i> invoked by a new expression or a constant object
    * expression are not subtypes of the bounds of the corresponding formal type parameters of
    * <i>G</i>.
    *
    * 12.11.1 New: If T is malformed a dynamic error occurs. In checked mode, if T is mal-bounded a
    * dynamic error occurs.
    *
    * 12.1 Constants: It is a compile-time error if evaluation of a compile-time constant would raise
    * an exception.
    *
    * @param boundedTypeName the name of the type used in the instance creation that should be
    *          limited by the bound as specified in the class declaration
    * @param boundingTypeName the name of the bounding type
    * @see StaticTypeWarningCode#TYPE_ARGUMENT_NOT_MATCHING_BOUNDS
    */
-  static const CompileTimeErrorCode TYPE_ARGUMENT_NOT_MATCHING_BOUNDS = const CompileTimeErrorCode.con1('TYPE_ARGUMENT_NOT_MATCHING_BOUNDS', 153, "'{0}' does not extend '{1}'");
+  static const CompileTimeErrorCode TYPE_ARGUMENT_NOT_MATCHING_BOUNDS = const CompileTimeErrorCode.con1('TYPE_ARGUMENT_NOT_MATCHING_BOUNDS', 159, "'{0}' does not extend '{1}'");
 
   /**
    * 15.3.1 Typedef: Any self reference, either directly, or recursively via another typedef, is a
    * compile time error.
    */
-  static const CompileTimeErrorCode TYPE_ALIAS_CANNOT_REFERENCE_ITSELF = const CompileTimeErrorCode.con1('TYPE_ALIAS_CANNOT_REFERENCE_ITSELF', 154, "Type alias cannot reference itself directly or recursively via another typedef");
+  static const CompileTimeErrorCode TYPE_ALIAS_CANNOT_REFERENCE_ITSELF = const CompileTimeErrorCode.con1('TYPE_ALIAS_CANNOT_REFERENCE_ITSELF', 160, "Type alias cannot reference itself directly or recursively via another typedef");
 
   /**
    * 12.11.2 Const: It is a compile-time error if <i>T</i> is not a class accessible in the current
    * scope, optionally followed by type arguments.
    */
-  static const CompileTimeErrorCode UNDEFINED_CLASS = const CompileTimeErrorCode.con1('UNDEFINED_CLASS', 155, "Undefined class '{0}'");
+  static const CompileTimeErrorCode UNDEFINED_CLASS = const CompileTimeErrorCode.con1('UNDEFINED_CLASS', 161, "Undefined class '{0}'");
 
   /**
    * 7.6.1 Generative Constructors: Let <i>C</i> be the class in which the superinitializer appears
    * and let <i>S</i> be the superclass of <i>C</i>. Let <i>k</i> be a generative constructor. It is
    * a compile-time error if class <i>S</i> does not declare a generative constructor named <i>S</i>
    * (respectively <i>S.id</i>)
    */
-  static const CompileTimeErrorCode UNDEFINED_CONSTRUCTOR_IN_INITIALIZER = const CompileTimeErrorCode.con1('UNDEFINED_CONSTRUCTOR_IN_INITIALIZER', 156, "The class '{0}' does not have a generative constructor '{1}'");
+  static const CompileTimeErrorCode UNDEFINED_CONSTRUCTOR_IN_INITIALIZER = const CompileTimeErrorCode.con1('UNDEFINED_CONSTRUCTOR_IN_INITIALIZER', 162, "The class '{0}' does not have a generative constructor '{1}'");
 
   /**
    * 7.6.1 Generative Constructors: Let <i>C</i> be the class in which the superinitializer appears
    * and let <i>S</i> be the superclass of <i>C</i>. Let <i>k</i> be a generative constructor. It is
    * a compile-time error if class <i>S</i> does not declare a generative constructor named <i>S</i>
    * (respectively <i>S.id</i>)
    */
-  static const CompileTimeErrorCode UNDEFINED_CONSTRUCTOR_IN_INITIALIZER_DEFAULT = const CompileTimeErrorCode.con1('UNDEFINED_CONSTRUCTOR_IN_INITIALIZER_DEFAULT', 157, "The class '{0}' does not have a default generative constructor");
+  static const CompileTimeErrorCode UNDEFINED_CONSTRUCTOR_IN_INITIALIZER_DEFAULT = const CompileTimeErrorCode.con1('UNDEFINED_CONSTRUCTOR_IN_INITIALIZER_DEFAULT', 163, "The class '{0}' does not have a default generative constructor");
 
   /**
    * 12.14.2 Binding Actuals to Formals: Furthermore, each <i>q<sub>i</sub></i>, <i>1<=i<=l</i>,
    * must have a corresponding named parameter in the set {<i>p<sub>n+1</sub></i> ...
    * <i>p<sub>n+k</sub></i>} or a static warning occurs.
    *
    * 12.11.2 Const: It is a compile-time error if evaluation of a constant object results in an
    * uncaught exception being thrown.
    *
    * @param name the name of the requested named parameter
    */
-  static const CompileTimeErrorCode UNDEFINED_NAMED_PARAMETER = const CompileTimeErrorCode.con1('UNDEFINED_NAMED_PARAMETER', 158, "The named parameter '{0}' is not defined");
+  static const CompileTimeErrorCode UNDEFINED_NAMED_PARAMETER = const CompileTimeErrorCode.con1('UNDEFINED_NAMED_PARAMETER', 164, "The named parameter '{0}' is not defined");
 
   /**
    * 14.2 Exports: It is a compile-time error if the compilation unit found at the specified URI is
    * not a library declaration.
    *
    * 14.1 Imports: It is a compile-time error if the compilation unit found at the specified URI is
    * not a library declaration.
    *
    * 14.3 Parts: It is a compile time error if the contents of the URI are not a valid part
    * declaration.
    *
    * @param uri the URI pointing to a non-existent file
    * @see #INVALID_URI
    */
-  static const CompileTimeErrorCode URI_DOES_NOT_EXIST = const CompileTimeErrorCode.con1('URI_DOES_NOT_EXIST', 159, "Target of URI does not exist: '{0}'");
+  static const CompileTimeErrorCode URI_DOES_NOT_EXIST = const CompileTimeErrorCode.con1('URI_DOES_NOT_EXIST', 165, "Target of URI does not exist: '{0}'");
 
   /**
    * 14.1 Imports: It is a compile-time error if <i>x</i> is not a compile-time constant, or if
    * <i>x</i> involves string interpolation.
    *
    * 14.3 Parts: It is a compile-time error if <i>s</i> is not a compile-time constant, or if
    * <i>s</i> involves string interpolation.
    *
    * 14.5 URIs: It is a compile-time error if the string literal <i>x</i> that describes a URI is
    * not a compile-time constant, or if <i>x</i> involves string interpolation.
    */
-  static const CompileTimeErrorCode URI_WITH_INTERPOLATION = const CompileTimeErrorCode.con1('URI_WITH_INTERPOLATION', 160, "URIs cannot use string interpolation");
+  static const CompileTimeErrorCode URI_WITH_INTERPOLATION = const CompileTimeErrorCode.con1('URI_WITH_INTERPOLATION', 166, "URIs cannot use string interpolation");
 
   /**
    * 7.1.1 Operators: It is a compile-time error if the arity of the user-declared operator []= is
    * not 2. It is a compile time error if the arity of a user-declared operator with one of the
    * names: &lt;, &gt;, &lt;=, &gt;=, ==, +, /, ~/, *, %, |, ^, &, &lt;&lt;, &gt;&gt;, [] is not 1.
    * It is a compile time error if the arity of the user-declared operator - is not 0 or 1. It is a
    * compile time error if the arity of the user-declared operator ~ is not 0.
    *
    * @param operatorName the name of the declared operator
    * @param expectedNumberOfParameters the number of parameters expected
    * @param actualNumberOfParameters the number of parameters found in the operator declaration
    */
-  static const CompileTimeErrorCode WRONG_NUMBER_OF_PARAMETERS_FOR_OPERATOR = const CompileTimeErrorCode.con1('WRONG_NUMBER_OF_PARAMETERS_FOR_OPERATOR', 161, "Operator '{0}' should declare exactly {1} parameter(s), but {2} found");
+  static const CompileTimeErrorCode WRONG_NUMBER_OF_PARAMETERS_FOR_OPERATOR = const CompileTimeErrorCode.con1('WRONG_NUMBER_OF_PARAMETERS_FOR_OPERATOR', 167, "Operator '{0}' should declare exactly {1} parameter(s), but {2} found");
 
   /**
    * 7.1.1 Operators: It is a compile time error if the arity of the user-declared operator - is not
    * 0 or 1.
    *
    * @param actualNumberOfParameters the number of parameters found in the operator declaration
    */
-  static const CompileTimeErrorCode WRONG_NUMBER_OF_PARAMETERS_FOR_OPERATOR_MINUS = const CompileTimeErrorCode.con1('WRONG_NUMBER_OF_PARAMETERS_FOR_OPERATOR_MINUS', 162, "Operator '-' should declare 0 or 1 parameter, but {0} found");
+  static const CompileTimeErrorCode WRONG_NUMBER_OF_PARAMETERS_FOR_OPERATOR_MINUS = const CompileTimeErrorCode.con1('WRONG_NUMBER_OF_PARAMETERS_FOR_OPERATOR_MINUS', 168, "Operator '-' should declare 0 or 1 parameter, but {0} found");
 
   /**
    * 7.3 Setters: It is a compile-time error if a setter's formal parameter list does not include
    * exactly one required formal parameter <i>p</i>.
    */
-  static const CompileTimeErrorCode WRONG_NUMBER_OF_PARAMETERS_FOR_SETTER = const CompileTimeErrorCode.con1('WRONG_NUMBER_OF_PARAMETERS_FOR_SETTER', 163, "Setters should declare exactly one required parameter");
+  static const CompileTimeErrorCode WRONG_NUMBER_OF_PARAMETERS_FOR_SETTER = const CompileTimeErrorCode.con1('WRONG_NUMBER_OF_PARAMETERS_FOR_SETTER', 169, "Setters should declare exactly one required parameter");
+
+  /**
+   * ?? Yield: It is a compile-time error if a yield statement appears in a function that is not a
+   * generator function.
+   */
+  static const CompileTimeErrorCode YIELD_EACH_IN_NON_GENERATOR = const CompileTimeErrorCode.con1('YIELD_EACH_IN_NON_GENERATOR', 170, "Yield-each statements must be in a generator function (one marked with either 'async*' or 'sync*')");
+
+  /**
+   * ?? Yield: It is a compile-time error if a yield statement appears in a function that is not a
+   * generator function.
+   */
+  static const CompileTimeErrorCode YIELD_IN_NON_GENERATOR = const CompileTimeErrorCode.con1('YIELD_IN_NON_GENERATOR', 171, "Yield statements must be in a generator function (one marked with either 'async*' or 'sync*')");
 
   static const List<CompileTimeErrorCode> values = const [
       ACCESS_PRIVATE_ENUM_FIELD,
       AMBIGUOUS_EXPORT,
       ARGUMENT_DEFINITION_TEST_NON_PARAMETER,
+      ASYNC_FOR_IN_WRONG_CONTEXT,
+      AWAIT_IN_WRONG_CONTEXT,
       BUILT_IN_IDENTIFIER_AS_TYPE,
       BUILT_IN_IDENTIFIER_AS_TYPE_NAME,
       BUILT_IN_IDENTIFIER_AS_TYPEDEF_NAME,
       BUILT_IN_IDENTIFIER_AS_TYPE_PARAMETER_NAME,
       CASE_EXPRESSION_TYPE_IMPLEMENTS_EQUALS,
       COMPILE_TIME_CONSTANT_RAISES_EXCEPTION,
       CONFLICTING_GETTER_AND_METHOD,
       CONFLICTING_METHOD_AND_GETTER,
       CONFLICTING_CONSTRUCTOR_NAME_AND_FIELD,
       CONFLICTING_CONSTRUCTOR_NAME_AND_METHOD,
@@ skipping 60 matching lines @@
       INCONSISTENT_CASE_EXPRESSION_TYPES,
       INITIALIZER_FOR_NON_EXISTANT_FIELD,
       INITIALIZER_FOR_STATIC_FIELD,
       INITIALIZING_FORMAL_FOR_NON_EXISTANT_FIELD,
       INITIALIZING_FORMAL_FOR_STATIC_FIELD,
       INSTANCE_MEMBER_ACCESS_FROM_FACTORY,
       INSTANCE_MEMBER_ACCESS_FROM_STATIC,
       INSTANTIATE_ENUM,
       INVALID_ANNOTATION,
       INVALID_ANNOTATION_FROM_DEFERRED_LIBRARY,
+      INVALID_IDENTIFIER_IN_ASYNC,
+      INVALID_MODIFIER_ON_CONSTRUCTOR,
+      INVALID_MODIFIER_ON_SETTER,
       INVALID_CONSTANT,
       INVALID_CONSTRUCTOR_NAME,
       INVALID_FACTORY_NAME_NOT_A_CLASS,
       INVALID_REFERENCE_TO_THIS,
       INVALID_TYPE_ARGUMENT_IN_CONST_LIST,
       INVALID_TYPE_ARGUMENT_IN_CONST_MAP,
       INVALID_URI,
       LABEL_IN_OUTER_SCOPE,
       LABEL_UNDEFINED,
       LIST_ELEMENT_TYPE_NOT_ASSIGNABLE,
@@ skipping 46 matching lines @@
       RECURSIVE_INTERFACE_INHERITANCE_BASE_CASE_IMPLEMENTS,
       RECURSIVE_INTERFACE_INHERITANCE_BASE_CASE_WITH,
       REDIRECT_TO_MISSING_CONSTRUCTOR,
       REDIRECT_TO_NON_CLASS,
       REDIRECT_TO_NON_CONST_CONSTRUCTOR,
       REDIRECT_GENERATIVE_TO_MISSING_CONSTRUCTOR,
       REDIRECT_GENERATIVE_TO_NON_GENERATIVE_CONSTRUCTOR,
       REFERENCED_BEFORE_DECLARATION,
       RETHROW_OUTSIDE_CATCH,
       RETURN_IN_GENERATIVE_CONSTRUCTOR,
+      RETURN_IN_GENERATOR,
       SHARED_DEFERRED_PREFIX,
       SUPER_IN_INVALID_CONTEXT,
       SUPER_IN_REDIRECTING_CONSTRUCTOR,
       SUPER_INITIALIZER_IN_OBJECT,
       TYPE_ARGUMENT_NOT_MATCHING_BOUNDS,
       TYPE_ALIAS_CANNOT_REFERENCE_ITSELF,
       UNDEFINED_CLASS,
       UNDEFINED_CONSTRUCTOR_IN_INITIALIZER,
       UNDEFINED_CONSTRUCTOR_IN_INITIALIZER_DEFAULT,
       UNDEFINED_NAMED_PARAMETER,
       URI_DOES_NOT_EXIST,
       URI_WITH_INTERPOLATION,
       WRONG_NUMBER_OF_PARAMETERS_FOR_OPERATOR,
       WRONG_NUMBER_OF_PARAMETERS_FOR_OPERATOR_MINUS,
-      WRONG_NUMBER_OF_PARAMETERS_FOR_SETTER];
+      WRONG_NUMBER_OF_PARAMETERS_FOR_SETTER,
+      YIELD_EACH_IN_NON_GENERATOR,
+      YIELD_IN_NON_GENERATOR];
 
   /**
    * The template used to create the message to be displayed for this error.
    */
   final String message;
 
   /**
    * The template used to create the correction to be displayed for this error, or `null` if
    * there is no correction information for this error.
    */
@@ skipping 2188 matching lines @@
 
   @override
   String get message => "{0}";
 
   @override
   ErrorType get type => ErrorType.TODO;
 
   @override
   String get uniqueName => "${runtimeType.toString()}.${name}";
 }