Linter Demo

Errors: 2

Warnings: 2

File: /home/fstrocco/Dart/dart/benchmark/compiler/lib/src/warnings.dart

// Copyright (c) 2011, 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. part of dart2js; const DONT_KNOW_HOW_TO_FIX = "Computer says no!"; /** * The messages in this file should meet the following guide lines: * * 1. The message should be a complete sentence starting with an uppercase * letter, and ending with a period. * * 2. Reserved words and embedded identifiers should be in single quotes, so * prefer double quotes for the complete message. For example, "The * class '#{className}' can't use 'super'." Notice that the word 'class' in the * preceding message is not quoted as it refers to the concept 'class', not the * reserved word. On the other hand, 'super' refers to the reserved word. Do * not quote 'null' and numeric literals. * * 3. Do not try to compose messages, as it can make translating them hard. * * 4. Try to keep the error messages short, but informative. * * 5. Use simple words and terminology, assume the reader of the message * doesn't have an advanced degree in math, and that English is not the * reader's native language. Do not assume any formal computer science * training. For example, do not use Latin abbreviations (prefer "that is" over * "i.e.", and "for example" over "e.g."). Also avoid phrases such as "if and * only if" and "iff", that level of precision is unnecessary. * * 6. Prefer contractions when they are in common use, for example, prefer * "can't" over "cannot". Using "cannot", "must not", "shall not", etc. is * off-putting to people new to programming. * * 7. Use common terminology, preferably from the Dart Language * Specification. This increases the user's chance of finding a good * explanation on the web. * * 8. Do not try to be cute or funny. It is extremely frustrating to work on a * product that crashes with a "tongue-in-cheek" message, especially if you did * not want to use this product to begin with. * * 9. Do not lie, that is, do not write error messages containing phrases like * "can't happen". If the user ever saw this message, it would be a * lie. Prefer messages like: "Internal error: This function should not be * called when 'x' is null.". * * 10. Prefer to not use imperative tone. That is, the message should not sound * accusing or like it is ordering the user around. The computer should * describe the problem, not criticize for violating the specification. * * Other things to keep in mind: * * An INFO message should always be preceded by a non-INFO message, and the * INFO messages are additional details about the preceding non-INFO * message. For example, consider duplicated elements. First report a WARNING * or ERROR about the duplicated element, and then report an INFO about the * location of the existing element. * * Generally, we want to provide messages that consists of three sentences: * 1. what is wrong, 2. why is it wrong, 3. how do I fix it. However, we * combine the first two in [template] and the last in [howToFix]. */ // TODO(johnnniwinther): For Infos, consider adding a reference to the // error/warning/hint that they belong to. class MessageKind { /// Should describe what is wrong and why. final String template; /// Should describe how to fix the problem. Elided when using --terse option. final String howToFix; /** * Examples will be checked by * tests/compiler/dart2js/message_kind_test.dart. * * An example is either a String containing the example source code or a Map * from filenames to source code. In the latter case, the filename for the * main library code must be 'main.dart'. */ final List examples; /// Additional options needed for the examples to work. final List<String> options; const MessageKind(this.template, {this.howToFix, this.examples, this.options: const <String>[]}); /// Do not use this. It is here for legacy and debugging. It violates item 4 /// above. static const MessageKind GENERIC = const MessageKind('#{text}'); static const MessageKind NOT_ASSIGNABLE = const MessageKind( "'#{fromType}' is not assignable to '#{toType}'."); static const MessageKind VOID_EXPRESSION = const MessageKind( "Expression does not yield a value."); static const MessageKind VOID_VARIABLE = const MessageKind( "Variable cannot be of type void."); static const MessageKind RETURN_VALUE_IN_VOID = const MessageKind( "Cannot return value from void function."); static const MessageKind RETURN_NOTHING = const MessageKind( "Value of type '#{returnType}' expected."); static const MessageKind MISSING_ARGUMENT = const MessageKind( "Missing argument of type '#{argumentType}'."); static const MessageKind ADDITIONAL_ARGUMENT = const MessageKind( "Additional argument."); static const MessageKind NAMED_ARGUMENT_NOT_FOUND = const MessageKind( "No named argument '#{argumentName}' found on method."); static const MessageKind MEMBER_NOT_FOUND = const MessageKind( "No member named '#{memberName}' in class '#{className}'."); static const MessageKind METHOD_NOT_FOUND = const MessageKind( "No method named '#{memberName}' in class '#{className}'."); static const MessageKind OPERATOR_NOT_FOUND = const MessageKind( "No operator '#{memberName}' in class '#{className}'."); static const MessageKind SETTER_NOT_FOUND = const MessageKind( "No setter named '#{memberName}' in class '#{className}'."); static const MessageKind GETTER_NOT_FOUND = const MessageKind( "No getter named '#{memberName}' in class '#{className}'."); static const MessageKind NOT_CALLABLE = const MessageKind( "'#{elementName}' is not callable."); static const MessageKind MEMBER_NOT_STATIC = const MessageKind( "'#{className}.#{memberName}' is not static."); static const MessageKind NO_INSTANCE_AVAILABLE = const MessageKind( "'#{name}' is only available in instance methods."); static const MessageKind PRIVATE_ACCESS = const MessageKind( "'#{name}' is declared private within library " "'#{libraryName}'."); static const MessageKind THIS_IS_THE_DECLARATION = const MessageKind( "This is the declaration of '#{name}'."); static const MessageKind THIS_IS_THE_METHOD = const MessageKind( "This is the method declaration."); static const MessageKind CANNOT_RESOLVE = const MessageKind( "Cannot resolve '#{name}'."); static const MessageKind CANNOT_RESOLVE_CONSTRUCTOR = const MessageKind( "Cannot resolve constructor '#{constructorName}'."); static const MessageKind CANNOT_RESOLVE_CONSTRUCTOR_FOR_IMPLICIT = const MessageKind("cannot resolve constructor '#{constructorName}'" " for implicit super call.", howToFix: "Try explicitly invoking a constructor of the super class", examples: const [""" class A { A.foo() {} } class B extends A { B(); } main() => new B(); """]); static const MessageKind INVALID_UNNAMED_CONSTRUCTOR_NAME = const MessageKind( "Unnamed constructor name must be '#{name}'."); static const MessageKind INVALID_CONSTRUCTOR_NAME = const MessageKind( "Constructor name must start with '#{name}'."); static const MessageKind CANNOT_RESOLVE_TYPE = const MessageKind( "Cannot resolve type '#{typeName}'."); static const MessageKind DUPLICATE_DEFINITION = const MessageKind( "Duplicate definition of '#{name}'.", howToFix: "Try to rename or remove this definition.", examples: const [""" class C { void f() {} int get f => 1; } main() { new C(); } """]); static const MessageKind EXISTING_DEFINITION = const MessageKind( "Existing definition of '#{name}'."); static const MessageKind DUPLICATE_IMPORT = const MessageKind( "Duplicate import of '#{name}'."); static const MessageKind HIDDEN_IMPORT = const MessageKind( "'#{name}' from library '#{hiddenUri}' is hidden by '#{name}' " "from library '#{hidingUri}'.", howToFix: "Try adding 'hide #{name}' to the import of '#{hiddenUri}'.", examples: const [ const { 'main.dart': """ import 'dart:async'; // This imports a class Future. import 'future.dart'; void main() => new Future();""", 'future.dart': """ library future; class Future {}"""}, const { 'main.dart': """ import 'future.dart'; import 'dart:async'; // This imports a class Future. void main() => new Future();""", 'future.dart': """ library future; class Future {}"""}, const { 'main.dart': """ import 'export.dart'; import 'dart:async'; // This imports a class Future. void main() => new Future();""", 'future.dart': """ library future; class Future {}""", 'export.dart': """ library export; export 'future.dart';"""}, const { 'main.dart': """ import 'future.dart' as prefix; import 'dart:async' as prefix; // This imports a class Future. void main() => new prefix.Future();""", 'future.dart': """ library future; class Future {}"""}]); static const MessageKind HIDDEN_IMPLICIT_IMPORT = const MessageKind( "'#{name}' from library '#{hiddenUri}' is hidden by '#{name}' " "from library '#{hidingUri}'.", howToFix: "Try adding an explicit " "'import \"#{hiddenUri}\" hide #{name}'.", examples: const [ const { 'main.dart': """ // This hides the implicit import of class Type from dart:core. import 'type.dart'; void main() => new Type();""", 'type.dart': """ library type; class Type {}"""}, const { 'conflictsWithDart.dart': """ library conflictsWithDart; class Duration { static var x = 100; } """, 'conflictsWithDartAsWell.dart': """ library conflictsWithDartAsWell; class Duration { static var x = 100; } """, 'main.dart': r""" library testDartConflicts; import 'conflictsWithDart.dart'; import 'conflictsWithDartAsWell.dart'; main() { print("Hail Caesar ${Duration.x}"); } """}]); static const MessageKind DUPLICATE_EXPORT = const MessageKind( "Duplicate export of '#{name}'.", howToFix: "Trying adding 'hide #{name}' to one of the exports.", examples: const [const { 'main.dart': """ export 'decl1.dart'; export 'decl2.dart'; main() {}""", 'decl1.dart': "class Class {}", 'decl2.dart': "class Class {}"}]); static const MessageKind DUPLICATE_EXPORT_CONT = const MessageKind( "This is another export of '#{name}'."); static const MessageKind DUPLICATE_EXPORT_DECL = const MessageKind( "The exported '#{name}' from export #{uriString} is defined here."); static const MessageKind NOT_A_TYPE = const MessageKind( "'#{node}' is not a type."); static const MessageKind NOT_A_PREFIX = const MessageKind( "'#{node}' is not a prefix."); static const MessageKind CANNOT_FIND_CONSTRUCTOR = const MessageKind( "Cannot find constructor '#{constructorName}'."); static const MessageKind CYCLIC_CLASS_HIERARCHY = const MessageKind( "'#{className}' creates a cycle in the class hierarchy."); static const MessageKind CYCLIC_REDIRECTING_FACTORY = const MessageKind( 'Redirecting factory leads to a cyclic redirection.'); static const MessageKind INVALID_RECEIVER_IN_INITIALIZER = const MessageKind( "Field initializer expected."); static const MessageKind NO_SUPER_IN_STATIC = const MessageKind( "'super' is only available in instance methods."); static const MessageKind DUPLICATE_INITIALIZER = const MessageKind( "Field '#{fieldName}' is initialized more than once."); static const MessageKind ALREADY_INITIALIZED = const MessageKind( "'#{fieldName}' was already initialized here."); static const MessageKind INIT_STATIC_FIELD = const MessageKind( "Cannot initialize static field '#{fieldName}'."); static const MessageKind NOT_A_FIELD = const MessageKind( "'#{fieldName}' is not a field."); static const MessageKind CONSTRUCTOR_CALL_EXPECTED = const MessageKind( "only call to 'this' or 'super' constructor allowed."); static const MessageKind INVALID_FOR_IN = const MessageKind( "Invalid for-in variable declaration."); static const MessageKind INVALID_INITIALIZER = const MessageKind( "Invalid initializer."); static const MessageKind FUNCTION_WITH_INITIALIZER = const MessageKind( "Only constructors can have initializers."); static const MessageKind REDIRECTING_CONSTRUCTOR_CYCLE = const MessageKind( "Cyclic constructor redirection."); static const MessageKind REDIRECTING_CONSTRUCTOR_HAS_BODY = const MessageKind( "Redirecting constructor can't have a body."); static const MessageKind CONST_CONSTRUCTOR_HAS_BODY = const MessageKind( "Const constructor or factory can't have a body.", howToFix: "Remove the 'const' keyword or the body", examples: const [""" class C { const C() {} } main() => new C();"""]); static const MessageKind REDIRECTING_CONSTRUCTOR_HAS_INITIALIZER = const MessageKind( "Redirecting constructor cannot have other initializers."); static const MessageKind SUPER_INITIALIZER_IN_OBJECT = const MessageKind( "'Object' cannot have a super initializer."); static const MessageKind DUPLICATE_SUPER_INITIALIZER = const MessageKind( "Cannot have more than one super initializer."); static const MessageKind INVALID_CONSTRUCTOR_ARGUMENTS = const MessageKind( "Arguments do not match the expected parameters of constructor " "'#{constructorName}'."); static const MessageKind NO_MATCHING_CONSTRUCTOR = const MessageKind( "'super' call arguments and constructor parameters do not match."); static const MessageKind NO_MATCHING_CONSTRUCTOR_FOR_IMPLICIT = const MessageKind( "Implicit 'super' call arguments and constructor parameters " "do not match."); static const MessageKind CONST_CALLS_NON_CONST = const MessageKind( "'const' constructor cannot call a non-const constructor."); static const MessageKind CONST_CONSTRUCTOR_WITH_NONFINAL_FIELDS = const MessageKind( "Can't declare constructor 'const' on class #{className} " "because the class contains non-final instance fields.", howToFix: "Try making all fields final.", examples: const [""" class C { // 'a' must be declared final to allow for the const constructor. var a; const C(this.a); } main() => new C(0);"""]); static const MessageKind CONST_CONSTRUCTOR_WITH_NONFINAL_FIELDS_FIELD = const MessageKind("This non-final field prevents using const " "constructors."); static const MessageKind CONST_CONSTRUCTOR_WITH_NONFINAL_FIELDS_CONSTRUCTOR = const MessageKind("This const constructor is not allowed due to " "non-final fields."); static const MessageKind INITIALIZING_FORMAL_NOT_ALLOWED = const MessageKind( "Initializing formal parameter only allowed in generative " "constructor."); static const MessageKind INVALID_PARAMETER = const MessageKind( "Cannot resolve parameter."); static const MessageKind NOT_INSTANCE_FIELD = const MessageKind( "'#{fieldName}' is not an instance field."); static const MessageKind NO_CATCH_NOR_FINALLY = const MessageKind( "Expected 'catch' or 'finally'."); static const MessageKind EMPTY_CATCH_DECLARATION = const MessageKind( "Expected an identifier in catch declaration."); static const MessageKind EXTRA_CATCH_DECLARATION = const MessageKind( "Extra parameter in catch declaration."); static const MessageKind PARAMETER_WITH_TYPE_IN_CATCH = const MessageKind( "Cannot use type annotations in catch."); static const MessageKind PARAMETER_WITH_MODIFIER_IN_CATCH = const MessageKind( "Cannot use modifiers in catch."); static const MessageKind OPTIONAL_PARAMETER_IN_CATCH = const MessageKind( "Cannot use optional parameters in catch."); static const MessageKind THROW_WITHOUT_EXPRESSION = const MessageKind( "Cannot use re-throw outside of catch block " "(expression expected after 'throw')."); static const MessageKind UNBOUND_LABEL = const MessageKind( "Cannot resolve label '#{labelName}'."); static const MessageKind NO_BREAK_TARGET = const MessageKind( "'break' statement not inside switch or loop."); static const MessageKind NO_CONTINUE_TARGET = const MessageKind( "'continue' statement not inside loop."); static const MessageKind EXISTING_LABEL = const MessageKind( "Original declaration of duplicate label '#{labelName}'."); static const MessageKind DUPLICATE_LABEL = const MessageKind( "Duplicate declaration of label '#{labelName}'."); static const MessageKind UNUSED_LABEL = const MessageKind( "Unused label '#{labelName}'."); static const MessageKind INVALID_CONTINUE = const MessageKind( "Target of continue is not a loop or switch case."); static const MessageKind INVALID_BREAK = const MessageKind( "Target of break is not a statement."); static const MessageKind DUPLICATE_TYPE_VARIABLE_NAME = const MessageKind( "Type variable '#{typeVariableName}' already declared."); static const MessageKind TYPE_VARIABLE_WITHIN_STATIC_MEMBER = const MessageKind( "Cannot refer to type variable '#{typeVariableName}' " "within a static member."); static const MessageKind TYPE_VARIABLE_IN_CONSTANT = const MessageKind( "Constant expressions can't refer to type variables.", howToFix: "Try removing the type variable or replacing it with a " "concrete type.", examples: const [""" class C<T> { const C(); m(T t) => const C<T>(); } void main() => new C().m(null); """ ]); static const MessageKind INVALID_TYPE_VARIABLE_BOUND = const MessageKind( "'#{typeArgument}' is not a subtype of bound '#{bound}' for " "type variable '#{typeVariable}' of type '#{thisType}'.", howToFix: "Try to change or remove the type argument.", examples: const [""" class C<T extends num> {} // 'String' is not a valid instantiation of T with bound num.'. main() => new C<String>(); """]); static const MessageKind INVALID_USE_OF_SUPER = const MessageKind( "'super' not allowed here."); static const MessageKind INVALID_CASE_DEFAULT = const MessageKind( "'default' only allowed on last case of a switch."); static const MessageKind SWITCH_CASE_TYPES_NOT_EQUAL = const MessageKind( "'case' expressions do not all have type '#{type}'."); static const MessageKind SWITCH_CASE_TYPES_NOT_EQUAL_CASE = const MessageKind( "'case' expression of type '#{type}'."); static const MessageKind SWITCH_CASE_FORBIDDEN = const MessageKind( "'case' expression may not be of type '#{type}'."); static const MessageKind SWITCH_CASE_VALUE_OVERRIDES_EQUALS = const MessageKind( "'case' expression type '#{type}' overrides 'operator =='."); static const MessageKind INVALID_ARGUMENT_AFTER_NAMED = const MessageKind( "Unnamed argument after named argument."); static const MessageKind NOT_A_COMPILE_TIME_CONSTANT = const MessageKind( "Not a compile-time constant."); static const MessageKind DEFERRED_COMPILE_TIME_CONSTANT = const MessageKind( "A Deferred value cannot be used as a compile-time constant."); static const MessageKind DEFERRED_COMPILE_TIME_CONSTANT_CONSTRUCTION = const MessageKind("A deferred class cannot be used to create a" "compile-time constant."); static const MessageKind CYCLIC_COMPILE_TIME_CONSTANTS = const MessageKind( "Cycle in the compile-time constant computation."); static const MessageKind CONSTRUCTOR_IS_NOT_CONST = const MessageKind( "Constructor is not a 'const' constructor."); static const MessageKind CONST_MAP_KEY_OVERRIDES_EQUALS = const MessageKind( "Const-map key type '#{type}' overrides 'operator =='."); static const MessageKind NO_SUCH_LIBRARY_MEMBER = const MessageKind( "'#{libraryName}' has no member named '#{memberName}'."); static const MessageKind CANNOT_INSTANTIATE_TYPEDEF = const MessageKind( "Cannot instantiate typedef '#{typedefName}'."); static const MessageKind REQUIRED_PARAMETER_WITH_DEFAULT = const MessageKind( "Non-optional parameters can't have a default value.", howToFix: "Try removing the default value or making the parameter optional.", examples: const [""" main() { foo(a: 1) => print(a); foo(2); }""", """ main() { foo(a = 1) => print(a); foo(2); }"""]); static const MessageKind NAMED_PARAMETER_WITH_EQUALS = const MessageKind( "Named optional parameters can't use '=' to specify a default " "value.", howToFix: "Try replacing '=' with ':'.", examples: const [""" main() { foo({a = 1}) => print(a); foo(a: 2); }"""]); static const MessageKind POSITIONAL_PARAMETER_WITH_EQUALS = const MessageKind( "Positional optional parameters can't use ':' to specify a " "default value.", howToFix: "Try replacing ':' with '='.", examples: const [""" main() { foo([a: 1]) => print(a); foo(2); }"""]); static const MessageKind TYPEDEF_FORMAL_WITH_DEFAULT = const MessageKind( "A parameter of a typedef can't specify a default value.", howToFix: "Try removing the default value.", examples: const [""" typedef void F([int arg = 0]); main() { F f; }""", """ typedef void F({int arg: 0}); main() { F f; }"""]); static const MessageKind FUNCTION_TYPE_FORMAL_WITH_DEFAULT = const MessageKind( "A function type parameter can't specify a default value.", howToFix: "Try removing the default value.", examples: const [""" foo(f(int i, [a = 1])) {} main() { foo(1, 2); }""", """ foo(f(int i, {a: 1})) {} main() { foo(1, a: 2); }"""]); static const MessageKind REDIRECTING_FACTORY_WITH_DEFAULT = const MessageKind( "A parameter of a redirecting factory constructor can't specify a " "default value.", howToFix: "Try removing the default value.", examples: const [""" class A { A([a]); factory A.foo([a = 1]) = A; } main() { new A.foo(1); }""", """ class A { A({a}); factory A.foo({a: 1}) = A; } main() { new A.foo(a: 1); }"""]); static const MessageKind FORMAL_DECLARED_CONST = const MessageKind( "A formal parameter can't be declared const.", howToFix: "Try removing 'const'.", examples: const [""" foo(const x) {} main() => foo(42); """, """ foo({const x}) {} main() => foo(42); """, """ foo([const x]) {} main() => foo(42); """]); static const MessageKind FORMAL_DECLARED_STATIC = const MessageKind( "A formal parameter can't be declared static.", howToFix: "Try removing 'static'.", examples: const [""" foo(static x) {} main() => foo(42); """, """ foo({static x}) {} main() => foo(42); """, """ foo([static x]) {} main() => foo(42); """]); static const MessageKind FINAL_FUNCTION_TYPE_PARAMETER = const MessageKind( "A function type parameter can't be declared final.", howToFix: "Try removing 'final'.", examples: const [""" foo(final int x(int a)) {} main() => foo((y) => 42); """, """ foo({final int x(int a)}) {} main() => foo((y) => 42); """, """ foo([final int x(int a)]) {} main() => foo((y) => 42); """]); static const MessageKind VAR_FUNCTION_TYPE_PARAMETER = const MessageKind( "A function type parameter can't be declared with 'var'.", howToFix: "Try removing 'var'.", examples: const [""" foo(var int x(int a)) {} main() => foo((y) => 42); """, """ foo({var int x(int a)}) {} main() => foo((y) => 42); """, """ foo([var int x(int a)]) {} main() => foo((y) => 42); """]); static const MessageKind CANNOT_INSTANTIATE_TYPE_VARIABLE = const MessageKind( "Cannot instantiate type variable '#{typeVariableName}'."); static const MessageKind CYCLIC_TYPE_VARIABLE = const MessageKind( "Type variable '#{typeVariableName}' is a supertype of itself."); static const CYCLIC_TYPEDEF = const MessageKind( "A typedef can't refer to itself.", howToFix: "Try removing all references to '#{typedefName}' " "in the definition of '#{typedefName}'.", examples: const [""" typedef F F(); // The return type 'F' is a self-reference. main() { F f = null; }"""]); static const CYCLIC_TYPEDEF_ONE = const MessageKind( "A typedef can't refer to itself through another typedef.", howToFix: "Try removing all references to " "'#{otherTypedefName}' in the definition of '#{typedefName}'.", examples: const [""" typedef G F(); // The return type 'G' is a self-reference through typedef 'G'. typedef F G(); // The return type 'F' is a self-reference through typedef 'F'. main() { F f = null; }""", """ typedef G F(); // The return type 'G' creates a self-reference. typedef H G(); // The return type 'H' creates a self-reference. typedef H(F f); // The argument type 'F' creates a self-reference. main() { F f = null; }"""]); static const MessageKind CLASS_NAME_EXPECTED = const MessageKind( "Class name expected."); static const MessageKind CANNOT_EXTEND = const MessageKind( "'#{type}' cannot be extended."); static const MessageKind CANNOT_IMPLEMENT = const MessageKind( "'#{type}' cannot be implemented."); // TODO(johnnwinther): Split messages into reasons for malformedness. static const MessageKind CANNOT_EXTEND_MALFORMED = const MessageKind( "Class '#{className}' can't extend the type '#{malformedType}' because " "it is malformed.", howToFix: "Try correcting the malformed type annotation or removing the " "'extends' clause.", examples: const [""" class A extends Malformed {} main() => new A();"""]); static const MessageKind CANNOT_IMPLEMENT_MALFORMED = const MessageKind( "Class '#{className}' can't implement the type '#{malformedType}' " "because it is malformed.", howToFix: "Try correcting the malformed type annotation or removing the " "type from the 'implements' clause.", examples: const [""" class A implements Malformed {} main() => new A();"""]); static const MessageKind CANNOT_MIXIN_MALFORMED = const MessageKind( "Class '#{className}' can't mixin the type '#{malformedType}' because it " "is malformed.", howToFix: "Try correcting the malformed type annotation or removing the " "type from the 'with' clause.", examples: const [""" class A extends Object with Malformed {} main() => new A();"""]); static const MessageKind CANNOT_MIXIN = const MessageKind( "The type '#{type}' can't be mixed in.", howToFix: "Try removing '#{type}' from the 'with' clause.", examples: const [""" class C extends Object with String {} main() => new C(); """, """ typedef C = Object with String; main() => new C(); """]); static const MessageKind CANNOT_EXTEND_ENUM = const MessageKind( "Class '#{className}' can't extend the type '#{enumType}' because " "it is declared by an enum.", howToFix: "Try making '#{enumType}' a normal class or removing the " "'extends' clause.", examples: const [""" enum Enum { A } class B extends Enum {} main() => new B();"""]); static const MessageKind CANNOT_IMPLEMENT_ENUM = const MessageKind( "Class '#{className}' can't implement the type '#{enumType}' " "because it is declared by an enum.", howToFix: "Try making '#{enumType}' a normal class or removing the " "type from the 'implements' clause.", examples: const [""" enum Enum { A } class B implements Enum {} main() => new B();"""]); static const MessageKind CANNOT_MIXIN_ENUM = const MessageKind( "Class '#{className}' can't mixin the type '#{enumType}' because it " "is declared by an enum.", howToFix: "Try making '#{enumType}' a normal class or removing the " "type from the 'with' clause.", examples: const [""" enum Enum { A } class B extends Object with Enum {} main() => new B();"""]); static const MessageKind CANNOT_INSTANTIATE_ENUM = const MessageKind( "Enum type '#{enumName}' cannot be instantiated.", howToFix: "Try making '#{enumType}' a normal class or use an enum " "constant.", examples: const [""" enum Enum { A } main() => new Enum(0);""", """ enum Enum { A } main() => const Enum(0);"""]); static const MessageKind EMPTY_ENUM_DECLARATION = const MessageKind( "Enum '#{enumName}' must contain at least one value.", howToFix: "Try adding an enum constant or making #{enumName} a " "normal class.", examples: const [""" enum Enum {} main() { Enum e; }"""]); static const MessageKind MISSING_ENUM_CASES = const MessageKind( "Missing enum constants in switch statement: #{enumValues}.", howToFix: "Try adding the missing constants or a default case.", examples: const [""" enum Enum { A, B } main() { switch (Enum.A) { case Enum.B: break; } }""", """ enum Enum { A, B, C } main() { switch (Enum.A) { case Enum.B: break; } }"""]); static const MessageKind DUPLICATE_EXTENDS_IMPLEMENTS = const MessageKind( "'#{type}' can not be both extended and implemented."); static const MessageKind DUPLICATE_IMPLEMENTS = const MessageKind( "'#{type}' must not occur more than once " "in the implements clause."); static const MessageKind MULTI_INHERITANCE = const MessageKind( "Dart2js does not currently support inheritance of the same class with " "different type arguments: Both #{firstType} and #{secondType} are " "supertypes of #{thisType}."); static const MessageKind ILLEGAL_SUPER_SEND = const MessageKind( "'#{name}' cannot be called on super."); static const MessageKind NO_SUCH_SUPER_MEMBER = const MessageKind( "Cannot resolve '#{memberName}' in a superclass of '#{className}'."); static const MessageKind ADDITIONAL_TYPE_ARGUMENT = const MessageKind( "Additional type argument."); static const MessageKind MISSING_TYPE_ARGUMENT = const MessageKind( "Missing type argument."); // TODO(johnniwinther): Use ADDITIONAL_TYPE_ARGUMENT or MISSING_TYPE_ARGUMENT // instead. static const MessageKind TYPE_ARGUMENT_COUNT_MISMATCH = const MessageKind( "Incorrect number of type arguments on '#{type}'."); static const MessageKind GETTER_MISMATCH = const MessageKind( "Setter disagrees on: '#{modifiers}'."); static const MessageKind SETTER_MISMATCH = const MessageKind( "Getter disagrees on: '#{modifiers}'."); static const MessageKind ILLEGAL_SETTER_FORMALS = const MessageKind( "A setter must have exactly one argument."); static const MessageKind NO_STATIC_OVERRIDE = const MessageKind( "Static member cannot override instance member '#{memberName}' of " "'#{className}'."); static const MessageKind NO_STATIC_OVERRIDE_CONT = const MessageKind( "This is the instance member that cannot be overridden " "by a static member."); static const MessageKind INSTANCE_STATIC_SAME_NAME = const MessageKind( "Instance member '#{memberName}' and static member of " "superclass '#{className}' have the same name."); static const MessageKind INSTANCE_STATIC_SAME_NAME_CONT = const MessageKind( "This is the static member with the same name."); static const MessageKind INVALID_OVERRIDE_METHOD = const MessageKind( "The type '#{declaredType}' of method '#{name}' declared in " "'#{class}' is not a subtype of the overridden method type " "'#{inheritedType}' inherited from '#{inheritedClass}'."); static const MessageKind INVALID_OVERRIDDEN_METHOD = const MessageKind( "This is the overridden method '#{name}' declared in class " "'#{class}'."); static const MessageKind INVALID_OVERRIDE_GETTER = const MessageKind( "The type '#{declaredType}' of getter '#{name}' declared in " "'#{class}' is not assignable to the type '#{inheritedType}' of the " "overridden getter inherited from '#{inheritedClass}'."); static const MessageKind INVALID_OVERRIDDEN_GETTER = const MessageKind( "This is the overridden getter '#{name}' declared in class " "'#{class}'."); static const MessageKind INVALID_OVERRIDE_GETTER_WITH_FIELD = const MessageKind( "The type '#{declaredType}' of field '#{name}' declared in " "'#{class}' is not assignable to the type '#{inheritedType}' of the " "overridden getter inherited from '#{inheritedClass}'."); static const MessageKind INVALID_OVERRIDE_FIELD_WITH_GETTER = const MessageKind( "The type '#{declaredType}' of getter '#{name}' declared in " "'#{class}' is not assignable to the type '#{inheritedType}' of the " "overridden field inherited from '#{inheritedClass}'."); static const MessageKind INVALID_OVERRIDE_SETTER = const MessageKind( "The type '#{declaredType}' of setter '#{name}' declared in " "'#{class}' is not assignable to the type '#{inheritedType}' of the " "overridden setter inherited from '#{inheritedClass}'."); static const MessageKind INVALID_OVERRIDDEN_SETTER = const MessageKind( "This is the overridden setter '#{name}' declared in class " "'#{class}'."); static const MessageKind INVALID_OVERRIDE_SETTER_WITH_FIELD = const MessageKind( "The type '#{declaredType}' of field '#{name}' declared in " "'#{class}' is not assignable to the type '#{inheritedType}' of the " "overridden setter inherited from '#{inheritedClass}'."); static const MessageKind INVALID_OVERRIDE_FIELD_WITH_SETTER = const MessageKind( "The type '#{declaredType}' of setter '#{name}' declared in " "'#{class}' is not assignable to the type '#{inheritedType}' of the " "overridden field inherited from '#{inheritedClass}'."); static const MessageKind INVALID_OVERRIDE_FIELD = const MessageKind( "The type '#{declaredType}' of field '#{name}' declared in " "'#{class}' is not assignable to the type '#{inheritedType}' of the " "overridden field inherited from '#{inheritedClass}'."); static const MessageKind INVALID_OVERRIDDEN_FIELD = const MessageKind( "This is the overridden field '#{name}' declared in class " "'#{class}'."); static const MessageKind CANNOT_OVERRIDE_FIELD_WITH_METHOD = const MessageKind( "Method '#{name}' in '#{class}' can't override field from " "'#{inheritedClass}'."); static const MessageKind CANNOT_OVERRIDE_FIELD_WITH_METHOD_CONT = const MessageKind( "This is the field that cannot be overridden by a method."); static const MessageKind CANNOT_OVERRIDE_METHOD_WITH_FIELD = const MessageKind( "Field '#{name}' in '#{class}' can't override method from " "'#{inheritedClass}'."); static const MessageKind CANNOT_OVERRIDE_METHOD_WITH_FIELD_CONT = const MessageKind( "This is the method that cannot be overridden by a field."); static const MessageKind CANNOT_OVERRIDE_GETTER_WITH_METHOD = const MessageKind( "Method '#{name}' in '#{class}' can't override getter from " "'#{inheritedClass}'."); static const MessageKind CANNOT_OVERRIDE_GETTER_WITH_METHOD_CONT = const MessageKind( "This is the getter that cannot be overridden by a method."); static const MessageKind CANNOT_OVERRIDE_METHOD_WITH_GETTER = const MessageKind( "Getter '#{name}' in '#{class}' can't override method from " "'#{inheritedClass}'."); static const MessageKind CANNOT_OVERRIDE_METHOD_WITH_GETTER_CONT = const MessageKind( "This is the method that cannot be overridden by a getter."); static const MessageKind MISSING_FORMALS = const MessageKind( "Formal parameters are missing."); static const MessageKind EXTRA_FORMALS = const MessageKind( "Formal parameters are not allowed here."); static const MessageKind UNARY_OPERATOR_BAD_ARITY = const MessageKind( "Operator '#{operatorName}' must have no parameters."); static const MessageKind MINUS_OPERATOR_BAD_ARITY = const MessageKind( "Operator '-' must have 0 or 1 parameters."); static const MessageKind BINARY_OPERATOR_BAD_ARITY = const MessageKind( "Operator '#{operatorName}' must have exactly 1 parameter."); static const MessageKind TERNARY_OPERATOR_BAD_ARITY = const MessageKind( "Operator '#{operatorName}' must have exactly 2 parameters."); static const MessageKind OPERATOR_OPTIONAL_PARAMETERS = const MessageKind( "Operator '#{operatorName}' cannot have optional parameters."); static const MessageKind OPERATOR_NAMED_PARAMETERS = const MessageKind( "Operator '#{operatorName}' cannot have named parameters."); static const MessageKind CONSTRUCTOR_WITH_RETURN_TYPE = const MessageKind( "Cannot have return type for constructor."); static const MessageKind CANNOT_RETURN_FROM_CONSTRUCTOR = const MessageKind( "Constructors can't return values.", howToFix: "Remove the return statement or use a factory constructor.", examples: const [""" class C { C() { return 1; } } main() => new C();"""]); static const MessageKind ILLEGAL_FINAL_METHOD_MODIFIER = const MessageKind( "Cannot have final modifier on method."); static const MessageKind ILLEGAL_CONST_FIELD_MODIFIER = const MessageKind( "Cannot have const modifier on non-static field.", howToFix: "Try adding a static modifier, or removing the const modifier.", examples: const [""" class C { const int a = 1; } main() => new C();"""]); static const MessageKind ILLEGAL_CONSTRUCTOR_MODIFIERS = const MessageKind( "Illegal constructor modifiers: '#{modifiers}'."); static const MessageKind ILLEGAL_MIXIN_APPLICATION_MODIFIERS = const MessageKind( "Illegal mixin application modifiers: '#{modifiers}'."); static const MessageKind ILLEGAL_MIXIN_SUPERCLASS = const MessageKind( "Class used as mixin must have Object as superclass."); static const MessageKind ILLEGAL_MIXIN_OBJECT = const MessageKind( "Cannot use Object as mixin."); static const MessageKind ILLEGAL_MIXIN_CONSTRUCTOR = const MessageKind( "Class used as mixin cannot have non-factory constructor."); static const MessageKind ILLEGAL_MIXIN_CYCLE = const MessageKind( "Class used as mixin introduces mixin cycle: " "'#{mixinName1}' <-> '#{mixinName2}'."); static const MessageKind ILLEGAL_MIXIN_WITH_SUPER = const MessageKind( "Cannot use class '#{className}' as a mixin because it uses " "'super'."); static const MessageKind ILLEGAL_MIXIN_SUPER_USE = const MessageKind( "Use of 'super' in class used as mixin."); static const MessageKind PARAMETER_NAME_EXPECTED = const MessageKind( "parameter name expected."); static const MessageKind CANNOT_RESOLVE_GETTER = const MessageKind( "Cannot resolve getter."); static const MessageKind CANNOT_RESOLVE_SETTER = const MessageKind( "Cannot resolve setter."); static const MessageKind ASSIGNING_METHOD = const MessageKind( "Cannot assign a value to a method."); static const MessageKind ASSIGNING_TYPE = const MessageKind( "Cannot assign a value to a type."); static const MessageKind VOID_NOT_ALLOWED = const MessageKind( "Type 'void' can't be used here because it isn't a return type.", howToFix: "Try removing 'void' keyword or replace it with 'var', 'final'," " or a type.", examples: const [ "void x; main() {}", "foo(void x) {} main() { foo(null); }", ]); static const MessageKind NULL_NOT_ALLOWED = const MessageKind( "`null` can't be used here."); static const MessageKind BEFORE_TOP_LEVEL = const MessageKind( "Part header must come before top-level definitions."); static const MessageKind IMPORT_PART_OF = const MessageKind( "The imported library must not have a 'part-of' directive.", howToFix: "Try removing the 'part-of' directive or replacing the " "import of the library with a 'part' directive.", examples: const [const { 'main.dart': """ library library; import 'part.dart'; main() {} """, 'part.dart': """ part of library; """}]); static const MessageKind LIBRARY_NAME_MISMATCH = const MessageKind( "Expected part of library name '#{libraryName}'.", howToFix: "Try changing the directive to 'part of #{libraryName};'.", examples: const [const { 'main.dart': """ library lib.foo; part 'part.dart'; main() {} """, 'part.dart': """ part of lib.bar; """}]); static const MessageKind MISSING_LIBRARY_NAME = const MessageKind( "Library has no name. Part directive expected library name " "to be '#{libraryName}'.", howToFix: "Try adding 'library #{libraryName};' to the library.", examples: const [const { 'main.dart': """ part 'part.dart'; main() {} """, 'part.dart': """ part of lib.foo; """}]); static const MessageKind THIS_IS_THE_PART_OF_TAG = const MessageKind( "This is the part of directive."); static const MessageKind MISSING_PART_OF_TAG = const MessageKind( "This file has no part-of tag, but it is being used as a part."); static const MessageKind DUPLICATED_PART_OF = const MessageKind( "Duplicated part-of directive."); static const MessageKind DUPLICATED_LIBRARY_NAME = const MessageKind( "Duplicated library name '#{libraryName}'."); static const MessageKind DUPLICATED_RESOURCE = const MessageKind( "The resource '#{resourceUri}' is loaded through both " "'#{canonicalUri1}' and '#{canonicalUri2}'."); static const MessageKind DUPLICATED_LIBRARY_RESOURCE = const MessageKind( "The library '#{libraryName}' in '#{resourceUri}' is loaded through " "both '#{canonicalUri1}' and '#{canonicalUri2}'."); // This is used as an exception. static const MessageKind INVALID_SOURCE_FILE_LOCATION = const MessageKind(''' Invalid offset (#{offset}) in source map. File: #{fileName} Length: #{length}'''); static const MessageKind TOP_LEVEL_VARIABLE_DECLARED_STATIC = const MessageKind( "Top-level variable cannot be declared static."); static const MessageKind REFERENCE_IN_INITIALIZATION = const MessageKind( "Variable '#{variableName}' is referenced during its " "initialization.", howToFix: "If you are trying to reference a shadowed variable, rename" " one of the variables.", examples: const [""" foo(t) { var t = t; return t; } main() => foo(1); """]); static const MessageKind CONST_WITHOUT_INITIALIZER = const MessageKind( "A constant variable must be initialized.", howToFix: "Try adding an initializer or " "removing the 'const' modifier.", examples: const [""" void main() { const c; // This constant variable must be initialized. }"""]); static const MessageKind FINAL_WITHOUT_INITIALIZER = const MessageKind( "A final variable must be initialized.", howToFix: "Try adding an initializer or " "removing the 'final' modifier.", examples: const [ "class C { static final field; } main() => C.field;"]); static const MessageKind MEMBER_USES_CLASS_NAME = const MessageKind( "Member variable can't have the same name as the class it is " "declared in.", howToFix: "Try renaming the variable.", examples: const [""" class A { var A; } main() { var a = new A(); a.A = 1; } """, """ class A { static var A; } main() => A.A = 1; """]); static const MessageKind WRONG_NUMBER_OF_ARGUMENTS_FOR_ASSERT = const MessageKind( "Wrong number of arguments to assert. Should be 1, but given " "#{argumentCount}."); static const MessageKind ASSERT_IS_GIVEN_NAMED_ARGUMENTS = const MessageKind( "'assert' takes no named arguments, but given #{argumentCount}."); static const MessageKind FACTORY_REDIRECTION_IN_NON_FACTORY = const MessageKind( "Factory redirection only allowed in factories."); static const MessageKind MISSING_FACTORY_KEYWORD = const MessageKind( "Did you forget a factory keyword here?"); static const MessageKind NO_SUCH_METHOD_IN_NATIVE = const MessageKind( "'NoSuchMethod' is not supported for classes that extend native " "classes."); static const MessageKind DEFERRED_LIBRARY_DART_2_DART = const MessageKind( "Deferred loading is not supported by the dart backend yet." "The output will not be split."); static const MessageKind DEFERRED_LIBRARY_WITHOUT_PREFIX = const MessageKind( "This import is deferred but there is no prefix keyword.", howToFix: "Try adding a prefix to the import."); static const MessageKind DEFERRED_OLD_SYNTAX = const MessageKind( "The DeferredLibrary annotation is obsolete.", howToFix: "Use the \"import 'lib.dart' deferred as prefix\" syntax instead."); static const MessageKind DEFERRED_LIBRARY_DUPLICATE_PREFIX = const MessageKind( "The prefix of this deferred import is not unique.", howToFix: "Try changing the import prefix."); static const MessageKind DEFERRED_TYPE_ANNOTATION = const MessageKind( "The type #{node} is deferred. " "Deferred types are not valid as type annotations.", howToFix: "Try using a non-deferred abstract class as an interface."); static const MessageKind ILLEGAL_STATIC = const MessageKind( "Modifier static is only allowed on functions declared in " "a class."); static const MessageKind STATIC_FUNCTION_BLOAT = const MessageKind( "Using '#{class}.#{name}' may lead to unnecessarily large " "generated code.", howToFix: "Try adding '@MirrorsUsed(...)' as described at " "https://goo.gl/Akrrog."); static const MessageKind NON_CONST_BLOAT = const MessageKind( "Using 'new #{name}' may lead to unnecessarily large generated " "code.", howToFix: "Try using 'const #{name}' or adding '@MirrorsUsed(...)' as " "described at https://goo.gl/Akrrog."); static const MessageKind STRING_EXPECTED = const MessageKind( "Expected a 'String', but got an instance of '#{type}'."); static const MessageKind PRIVATE_IDENTIFIER = const MessageKind( "'#{value}' is not a valid Symbol name because it starts with " "'_'."); static const MessageKind PRIVATE_NAMED_PARAMETER = const MessageKind( "Named optional parameter can't have a library private name.", howToFix: "Try removing the '_' or making the parameter positional or " "required.", examples: const ["""foo({int _p}) {} main() => foo();"""] ); static const MessageKind UNSUPPORTED_LITERAL_SYMBOL = const MessageKind( "Symbol literal '##{value}' is currently unsupported by dart2js."); static const MessageKind INVALID_SYMBOL = const MessageKind(''' '#{value}' is not a valid Symbol name because is not: * an empty String, * a user defined operator, * a qualified non-private identifier optionally followed by '=', or * a qualified non-private identifier followed by '.' and a user-defined ''' "operator."); static const MessageKind AMBIGUOUS_REEXPORT = const MessageKind( "'#{name}' is (re)exported by multiple libraries."); static const MessageKind AMBIGUOUS_LOCATION = const MessageKind( "'#{name}' is defined here."); static const MessageKind IMPORTED_HERE = const MessageKind( "'#{name}' is imported here."); static const MessageKind OVERRIDE_EQUALS_NOT_HASH_CODE = const MessageKind( "The class '#{class}' overrides 'operator==', " "but not 'get hashCode'."); static const MessageKind INTERNAL_LIBRARY_FROM = const MessageKind( "Internal library '#{resolvedUri}' is not accessible from " "'#{importingUri}'."); static const MessageKind INTERNAL_LIBRARY = const MessageKind( "Internal library '#{resolvedUri}' is not accessible."); static const MessageKind LIBRARY_NOT_FOUND = const MessageKind( "Library not found '#{resolvedUri}'."); static const MessageKind UNSUPPORTED_EQ_EQ_EQ = const MessageKind( "'===' is not an operator. " "Did you mean '#{lhs} == #{rhs}' or 'identical(#{lhs}, #{rhs})'?"); static const MessageKind UNSUPPORTED_BANG_EQ_EQ = const MessageKind( "'!==' is not an operator. " "Did you mean '#{lhs} != #{rhs}' or '!identical(#{lhs}, #{rhs})'?"); static const MessageKind UNSUPPORTED_PREFIX_PLUS = const MessageKind( "'+' is not a prefix operator. ", howToFix: "Try removing '+'.", examples: const [ "main() => +2; // No longer a valid way to write '2'" ]); static const MessageKind UNSUPPORTED_THROW_WITHOUT_EXP = const MessageKind( "No expression after 'throw'. " "Did you mean 'rethrow'?"); static const MessageKind DEPRECATED_TYPEDEF_MIXIN_SYNTAX = const MessageKind( "'typedef' not allowed here. ", howToFix: "Try replacing 'typedef' with 'class'.", examples: const [ """ class B { } class M1 { } typedef C = B with M1; // Need to replace 'typedef' with 'class'. main() { new C(); } """] ); static const MessageKind MIRRORS_EXPECTED_STRING = const MessageKind( "Can't use '#{name}' here because it's an instance of '#{type}' " "and a 'String' value is expected.", howToFix: "Did you forget to add quotes?", examples: const [ """ // 'Foo' is a type literal, not a string. @MirrorsUsed(symbols: const [Foo]) import 'dart:mirrors'; class Foo {} main() {} """]); static const MessageKind MIRRORS_EXPECTED_STRING_OR_TYPE = const MessageKind( "Can't use '#{name}' here because it's an instance of '#{type}' " "and a 'String' or 'Type' value is expected.", howToFix: "Did you forget to add quotes?", examples: const [ """ // 'main' is a method, not a class. @MirrorsUsed(targets: const [main]) import 'dart:mirrors'; main() {} """]); static const MessageKind MIRRORS_EXPECTED_STRING_OR_LIST = const MessageKind( "Can't use '#{name}' here because it's an instance of '#{type}' " "and a 'String' or 'List' value is expected.", howToFix: "Did you forget to add quotes?", examples: const [ """ // 'Foo' is not a string. @MirrorsUsed(symbols: Foo) import 'dart:mirrors'; class Foo {} main() {} """]); static const MessageKind MIRRORS_EXPECTED_STRING_TYPE_OR_LIST = const MessageKind( "Can't use '#{name}' here because it's an instance of '#{type}' " "but a 'String', 'Type', or 'List' value is expected.", howToFix: "Did you forget to add quotes?", examples: const [ """ // '1' is not a string. @MirrorsUsed(targets: 1) import 'dart:mirrors'; main() {} """]); static const MessageKind MIRRORS_CANNOT_RESOLVE_IN_CURRENT_LIBRARY = const MessageKind( "Can't find '#{name}' in the current library.", // TODO(ahe): The closest identifiers in edit distance would be nice. howToFix: "Did you forget to add an import?", examples: const [ """ // 'window' is not in scope because dart:html isn't imported. @MirrorsUsed(targets: 'window') import 'dart:mirrors'; main() {} """]); static const MessageKind MIRRORS_CANNOT_RESOLVE_IN_LIBRARY = const MessageKind( "Can't find '#{name}' in the library '#{library}'.", // TODO(ahe): The closest identifiers in edit distance would be nice. howToFix: "Is '#{name}' spelled right?", examples: const [ """ // 'List' is misspelled. @MirrorsUsed(targets: 'dart.core.Lsit') import 'dart:mirrors'; main() {} """]); static const MessageKind MIRRORS_CANNOT_FIND_IN_ELEMENT = const MessageKind( "Can't find '#{name}' in '#{element}'.", // TODO(ahe): The closest identifiers in edit distance would be nice. howToFix: "Is '#{name}' spelled right?", examples: const [ """ // 'addAll' is misspelled. @MirrorsUsed(targets: 'dart.core.List.addAl') import 'dart:mirrors'; main() {} """]); static const MessageKind READ_SCRIPT_ERROR = const MessageKind( "Can't read '#{uri}' (#{exception}).", // Don't know how to fix since the underlying error is unknown. howToFix: DONT_KNOW_HOW_TO_FIX, examples: const [ """ // 'foo.dart' does not exist. import 'foo.dart'; main() {} """]); static const MessageKind READ_SELF_ERROR = const MessageKind( "#{exception}", // Don't know how to fix since the underlying error is unknown. howToFix: DONT_KNOW_HOW_TO_FIX); static const MessageKind EXTRANEOUS_MODIFIER = const MessageKind( "Can't have modifier '#{modifier}' here.", howToFix: "Try removing '#{modifier}'.", examples: const [ "var String foo; main(){}", // "var get foo; main(){}", "var set foo; main(){}", "var final foo; main(){}", "var var foo; main(){}", "var const foo; main(){}", "var abstract foo; main(){}", "var static foo; main(){}", "var external foo; main(){}", "get var foo; main(){}", "set var foo; main(){}", "final var foo; main(){}", "var var foo; main(){}", "const var foo; main(){}", "abstract var foo; main(){}", "static var foo; main(){}", "external var foo; main(){}"]); static const MessageKind EXTRANEOUS_MODIFIER_REPLACE = const MessageKind( "Can't have modifier '#{modifier}' here.", howToFix: "Try replacing modifier '#{modifier}' with 'var', 'final'," " or a type.", examples: const [ // "get foo; main(){}", "set foo; main(){}", "abstract foo; main(){}", "static foo; main(){}", "external foo; main(){}"]); static const MessageKind ABSTRACT_CLASS_INSTANTIATION = const MessageKind( "Can't instantiate abstract class.", howToFix: DONT_KNOW_HOW_TO_FIX, examples: const ["abstract class A {} main() { new A(); }"]); static const MessageKind BODY_EXPECTED = const MessageKind( "Expected a function body or '=>'.", // TODO(ahe): In some scenarios, we can suggest removing the 'static' // keyword. howToFix: "Try adding {}.", examples: const [ "main();"]); static const MessageKind MIRROR_BLOAT = const MessageKind( "#{count} methods retained for use by dart:mirrors out of #{total}" " total methods (#{percentage}%)."); static const MessageKind MIRROR_IMPORT = const MessageKind( "Import of 'dart:mirrors'."); static const MessageKind MIRROR_IMPORT_NO_USAGE = const MessageKind( "This import is not annotated with @MirrorsUsed, which may lead to " "unnecessarily large generated code.", howToFix: "Try adding '@MirrorsUsed(...)' as described at " "https://goo.gl/Akrrog."); static const MessageKind WRONG_ARGUMENT_FOR_JS_INTERCEPTOR_CONSTANT = const MessageKind( "Argument for 'JS_INTERCEPTOR_CONSTANT' must be a type constant."); static const MessageKind EXPECTED_IDENTIFIER_NOT_RESERVED_WORD = const MessageKind( "'#{keyword}' is a reserved word and can't be used here.", howToFix: "Try using a different name.", examples: const ["do() {} main() {}"]); static const MessageKind NAMED_FUNCTION_EXPRESSION = const MessageKind("Function expression '#{name}' cannot be named.", howToFix: "Try removing the name.", examples: const ["main() { var f = func() {}; }"]); static const MessageKind UNUSED_METHOD = const MessageKind( "The method '#{name}' is never called.", howToFix: "Consider deleting it.", examples: const ["deadCode() {} main() {}"]); static const MessageKind UNUSED_CLASS = const MessageKind( "The class '#{name}' is never used.", howToFix: "Consider deleting it.", examples: const ["class DeadCode {} main() {}"]); static const MessageKind UNUSED_TYPEDEF = const MessageKind( "The typedef '#{name}' is never used.", howToFix: "Consider deleting it.", examples: const ["typedef DeadCode(); main() {}"]); static const MessageKind ABSTRACT_METHOD = const MessageKind( "The method '#{name}' has no implementation in " "class '#{class}'.", howToFix: "Try adding a body to '#{name}' or declaring " "'#{class}' to be 'abstract'.", examples: const [""" class Class { method(); } main() => new Class().method(); """]); static const MessageKind ABSTRACT_GETTER = const MessageKind( "The getter '#{name}' has no implementation in " "class '#{class}'.", howToFix: "Try adding a body to '#{name}' or declaring " "'#{class}' to be 'abstract'.", examples: const [""" class Class { get getter; } main() => new Class(); """]); static const MessageKind ABSTRACT_SETTER = const MessageKind( "The setter '#{name}' has no implementation in " "class '#{class}'.", howToFix: "Try adding a body to '#{name}' or declaring " "'#{class}' to be 'abstract'.", examples: const [""" class Class { set setter(_); } main() => new Class(); """]); static const MessageKind INHERIT_GETTER_AND_METHOD = const MessageKind( "The class '#{class}' can't inherit both getters and methods " "by the named '#{name}'.", howToFix: DONT_KNOW_HOW_TO_FIX, examples: const [""" class A { get member => null; } class B { member() {} } class Class implements A, B { } main() => new Class(); """]); static const MessageKind INHERITED_METHOD = const MessageKind( "The inherited method '#{name}' is declared here in class " "'#{class}'."); static const MessageKind INHERITED_EXPLICIT_GETTER = const MessageKind( "The inherited getter '#{name}' is declared here in class " "'#{class}'."); static const MessageKind INHERITED_IMPLICIT_GETTER = const MessageKind( "The inherited getter '#{name}' is implicitly declared by this " "field in class '#{class}'."); static const MessageKind UNIMPLEMENTED_METHOD_ONE = const MessageKind( "'#{class}' doesn't implement '#{method}' " "declared in '#{declarer}'.", howToFix: "Try adding an implementation of '#{name}' or declaring " "'#{class}' to be 'abstract'.", examples: const [""" abstract class I { m(); } class C implements I {} main() => new C(); """, """ abstract class I { m(); } class C extends I {} main() => new C(); """]); static const MessageKind UNIMPLEMENTED_METHOD = const MessageKind( "'#{class}' doesn't implement '#{method}'.", howToFix: "Try adding an implementation of '#{name}' or declaring " "'#{class}' to be 'abstract'.", examples: const [""" abstract class I { m(); } abstract class J { m(); } class C implements I, J {} main() { new C(); } """, """ abstract class I { m(); } abstract class J { m(); } class C extends I implements J {} main() { new C(); } """]); static const MessageKind UNIMPLEMENTED_METHOD_CONT = const MessageKind( "The method '#{name}' is declared here in class '#{class}'."); static const MessageKind UNIMPLEMENTED_SETTER_ONE = const MessageKind( "'#{class}' doesn't implement the setter '#{name}' " "declared in '#{declarer}'.", howToFix: "Try adding an implementation of '#{name}' or declaring " "'#{class}' to be 'abstract'.", examples: const [""" abstract class I { set m(_); } class C implements I {} class D implements I { set m(_) {} } main() { new D().m = 0; new C(); } """]); static const MessageKind UNIMPLEMENTED_SETTER = const MessageKind( "'#{class}' doesn't implement the setter '#{name}'.", howToFix: "Try adding an implementation of '#{name}' or declaring " "'#{class}' to be 'abstract'.", examples: const [""" abstract class I { set m(_); } abstract class J { set m(_); } class C implements I, J {} main() => new C(); """, """ abstract class I { set m(_); } abstract class J { set m(_); } class C extends I implements J {} main() => new C(); """]); static const MessageKind UNIMPLEMENTED_EXPLICIT_SETTER = const MessageKind( "The setter '#{name}' is declared here in class '#{class}'."); static const MessageKind UNIMPLEMENTED_IMPLICIT_SETTER = const MessageKind( "The setter '#{name}' is implicitly declared by this field " "in class '#{class}'."); static const MessageKind UNIMPLEMENTED_GETTER_ONE = const MessageKind( "'#{class}' doesn't implement the getter '#{name}' " "declared in '#{declarer}'.", howToFix: "Try adding an implementation of '#{name}' or declaring " "'#{class}' to be 'abstract'.", examples: const [""" abstract class I { get m; } class C implements I {} main() => new C(); """, """ abstract class I { get m; } class C extends I {} main() => new C(); """]); static const MessageKind UNIMPLEMENTED_GETTER = const MessageKind( "'#{class}' doesn't implement the getter '#{name}'.", howToFix: "Try adding an implementation of '#{name}' or declaring " "'#{class}' to be 'abstract'.", examples: const [""" abstract class I { get m; } abstract class J { get m; } class C implements I, J {} main() => new C(); """, """ abstract class I { get m; } abstract class J { get m; } class C extends I implements J {} main() => new C(); """]); static const MessageKind UNIMPLEMENTED_EXPLICIT_GETTER = const MessageKind( "The getter '#{name}' is declared here in class '#{class}'."); static const MessageKind UNIMPLEMENTED_IMPLICIT_GETTER = const MessageKind( "The getter '#{name}' is implicitly declared by this field " "in class '#{class}'."); static const MessageKind EQUAL_MAP_ENTRY_KEY = const MessageKind( "An entry with the same key already exists in the map.", howToFix: "Try removing the previous entry or changing the key in one " "of the entries.", examples: const [""" main() { var m = const {'foo': 1, 'foo': 2}; }"""]); static const MessageKind BAD_INPUT_CHARACTER = const MessageKind( "Character U+#{characterHex} isn't allowed here.", howToFix: DONT_KNOW_HOW_TO_FIX, examples: const [""" main() { String x = ç; } """]); static const MessageKind UNTERMINATED_STRING = const MessageKind( "String must end with #{quote}.", howToFix: DONT_KNOW_HOW_TO_FIX, examples: const [""" main() { return ' ; } """, """ main() { return \" ; } """, """ main() { return r' ; } """, """ main() { return r\" ; } """, """ main() => ''' """, """ main() => \"\"\" """, """ main() => r''' """, """ main() => r\"\"\" """]); static const MessageKind UNMATCHED_TOKEN = const MessageKind( "Can't find '#{end}' to match '#{begin}'.", howToFix: DONT_KNOW_HOW_TO_FIX, examples: const[ "main(", "main(){", "main(){]}", ]); static const MessageKind UNTERMINATED_TOKEN = const MessageKind( // This is a fall-back message that shouldn't happen. "Incomplete token."); static const MessageKind EXPONENT_MISSING = const MessageKind( "Numbers in exponential notation should always contain an exponent" " (an integer number with an optional sign).", howToFix: "Make sure there is an exponent, and remove any whitespace " "before it.", examples: const [""" main() { var i = 1e; } """]); static const MessageKind HEX_DIGIT_EXPECTED = const MessageKind( "A hex digit (0-9 or A-F) must follow '0x'.", howToFix: DONT_KNOW_HOW_TO_FIX, // Seems obvious from the error message. examples: const [""" main() { var i = 0x; } """]); static const MessageKind MALFORMED_STRING_LITERAL = const MessageKind( r"A '$' has special meaning inside a string, and must be followed by an" " identifier or an expression in curly braces ({}).", howToFix: r"Try adding a backslash (\) to escape the '$'.", examples: const [r""" main() { return '$'; } """, r''' main() { return "$"; } ''', r""" main() { return '''$'''; } """, r''' main() { return """$"""; } ''']); static const MessageKind UNTERMINATED_COMMENT = const MessageKind( "Comment starting with '/*' must end with '*/'.", howToFix: DONT_KNOW_HOW_TO_FIX, examples: const [r""" main() { } /*"""]); static const MessageKind MISSING_TOKEN_BEFORE_THIS = const MessageKind( "Expected '#{token}' before this.", // Consider the second example below: the parser expects a ')' before // 'y', but a ',' would also have worked. We don't have enough // information to give a good suggestion. howToFix: DONT_KNOW_HOW_TO_FIX, examples: const [ "main() => true ? 1;", "main() => foo(x: 1 y: 2);", ]); static const MessageKind MISSING_TOKEN_AFTER_THIS = const MessageKind( "Expected '#{token}' after this.", // See [MISSING_TOKEN_BEFORE_THIS], we don't have enough information to // give a good suggestion. howToFix: DONT_KNOW_HOW_TO_FIX, examples: const [ "main(x) {x}", """ class S1 {} class S2 {} class S3 {} class A = S1 with S2, S3 main() => new A(); """ ]); static const MessageKind CONSIDER_ANALYZE_ALL = const MessageKind( "Could not find '#{main}'. Nothing will be analyzed.", howToFix: "Try using '--analyze-all' to analyze everything.", examples: const ['']); static const MessageKind MISSING_MAIN = const MessageKind( "Could not find '#{main}'.", howToFix: "Try adding a method named '#{main}' to your program." /* No example, test uses '--analyze-only' which will produce the above * message [CONSIDER_ANALYZE_ALL]. An example for a human operator would * be an empty file. */); static const MessageKind MAIN_NOT_A_FUNCTION = const MessageKind( "'#{main}' is not a function.", howToFix: DONT_KNOW_HOW_TO_FIX, /* Don't state the obvious. */ examples: const ['var main;']); static const MessageKind MAIN_WITH_EXTRA_PARAMETER = const MessageKind( "'#{main}' cannot have more than two parameters.", howToFix: DONT_KNOW_HOW_TO_FIX, /* Don't state the obvious. */ examples: const ['main(a, b, c) {}']); static const MessageKind COMPILER_CRASHED = const MessageKind( "The compiler crashed when compiling this element."); static const MessageKind PLEASE_REPORT_THE_CRASH = const MessageKind(''' The compiler is broken. When compiling the above element, the compiler crashed. It is not possible to tell if this is caused by a problem in your program or not. Regardless, the compiler should not crash. The Dart team would greatly appreciate if you would take a moment to report this problem at http://dartbug.com/new. Please include the following information: * the name and version of your operating system, * the Dart SDK build number (#{buildId}), and * the entire message you see here (including the full stack trace below as well as the source location above). '''); static const MessageKind POTENTIAL_MUTATION = const MessageKind( "Variable '#{variableName}' is not known to be of type " "'#{shownType}' because it is potentially mutated in the scope for " "promotion."); static const MessageKind POTENTIAL_MUTATION_HERE = const MessageKind( "Variable '#{variableName}' is potentially mutated here."); static const MessageKind POTENTIAL_MUTATION_IN_CLOSURE = const MessageKind( "Variable '#{variableName}' is not known to be of type " "'#{shownType}' because it is potentially mutated within a closure."); static const MessageKind POTENTIAL_MUTATION_IN_CLOSURE_HERE = const MessageKind( "Variable '#{variableName}' is potentially mutated in a " "closure here."); static const MessageKind ACCESSED_IN_CLOSURE = const MessageKind( "Variable '#{variableName}' is not known to be of type " "'#{shownType}' because it is accessed by a closure in the scope for " "promotion and potentially mutated in the scope of '#{variableName}'."); static const MessageKind ACCESSED_IN_CLOSURE_HERE = const MessageKind( "Variable '#{variableName}' is accessed in a closure here."); static const MessageKind NOT_MORE_SPECIFIC = const MessageKind( "Variable '#{variableName}' is not shown to have type " "'#{shownType}' because '#{shownType}' is not more specific than the " "known type '#{knownType}' of '#{variableName}'."); static const MessageKind NOT_MORE_SPECIFIC_SUBTYPE = const MessageKind( "Variable '#{variableName}' is not shown to have type " "'#{shownType}' because '#{shownType}' is not a subtype of the " "known type '#{knownType}' of '#{variableName}'."); static const MessageKind NOT_MORE_SPECIFIC_SUGGESTION = const MessageKind( "Variable '#{variableName}' is not shown to have type " "'#{shownType}' because '#{shownType}' is not more specific than the " "known type '#{knownType}' of '#{variableName}'.", howToFix: "Try replacing '#{shownType}' with '#{shownTypeSuggestion}'."); static const MessageKind HIDDEN_WARNINGS_HINTS = const MessageKind( "#{warnings} warning(s) and #{hints} hint(s) suppressed in #{uri}."); static const MessageKind HIDDEN_WARNINGS = const MessageKind( "#{warnings} warning(s) suppressed in #{uri}."); static const MessageKind HIDDEN_HINTS = const MessageKind( "#{hints} hint(s) suppressed in #{uri}."); static const MessageKind PREAMBLE = const MessageKind( "When run on the command-line, the compiled output might" " require a preamble file located in:\n" " <sdk>/lib/_internal/compiler/js_lib/preambles."); static const MessageKind INVALID_SYNC_MODIFIER = const MessageKind( "Invalid modifier 'sync'.", options: const ['--enable-async'], howToFix: "Try replacing 'sync' with 'sync*'.", examples: const [ "main() sync {}" ]); static const MessageKind INVALID_AWAIT_FOR = const MessageKind( "'await' is only supported on for-in loops.", options: const ['--enable-async'], howToFix: "Try rewriting the loop as a for-in loop or removing the " "'await' keyword.", examples: const [""" main() async* { await for (int i = 0; i < 10; i++) {} } """]); static const MessageKind ASYNC_MODIFIER_ON_ABSTRACT_METHOD = const MessageKind( "The modifier '#{modifier}' is not allowed on an abstract method.", options: const ['--enable-async'], howToFix: "Try removing the '#{modifier}' modifier or adding a " "body to the method.", examples: const [""" abstract class A { method() async; } class B extends A { method() {} } main() { A a = new B(); a.method(); } """]); static const MessageKind ASYNC_MODIFIER_ON_CONSTRUCTOR = const MessageKind( "The modifier '#{modifier}' is not allowed on constructors.", options: const ['--enable-async'], howToFix: "Try removing the '#{modifier}' modifier.", examples: const [""" class A { A() async; } main() => new A();""", """ class A { A(); factory A.a() async* {} } main() => new A.a();"""]); static const MessageKind ASYNC_MODIFIER_ON_SETTER = const MessageKind( "The modifier '#{modifier}' is not allowed on setters.", options: const ['--enable-async'], howToFix: "Try removing the '#{modifier}' modifier.", examples: const [""" class A { set foo(v) async {} } main() => new A().foo = 0;"""]); static const MessageKind YIELDING_MODIFIER_ON_ARROW_BODY = const MessageKind( "The modifier '#{modifier}' is not allowed on methods implemented " "using '=>'.", options: const ['--enable-async'], howToFix: "Try removing the '#{modifier}' modifier or implementing " "the method body using a block: '{ ... }'.", examples: const ["main() sync* => null;", "main() async* => null;"]); // TODO(johnniwinther): Check for 'async' as identifier. static const MessageKind ASYNC_KEYWORD_AS_IDENTIFIER = const MessageKind( "'#{keyword}' cannot be used as an identifier in a function body marked " "with '#{modifier}'.", options: const ['--enable-async'], howToFix: "Try removing the '#{modifier}' modifier or renaming the " "identifier.", examples: const [""" main() async { var await; }""", """ main() async* { var yield; }""", """ main() sync* { var yield; }"""]); static const MessageKind RETURN_IN_GENERATOR = const MessageKind( "'return' with a value is not allowed in a method body using the " "'#{modifier}' modifier.", howToFix: "Try removing the value, replacing 'return' with 'yield' " "or changing the method body modifier.", examples: const [ """ foo() async* { return 0; } main() => foo(); """, """ foo() sync* { return 0; } main() => foo(); """]); static const MessageKind NATIVE_NOT_SUPPORTED = const MessageKind( "'native' modifier is not supported.", howToFix: "Try removing the 'native' implementation or analyzing the " "code with the --allow-native-extensions option.", examples: const [""" main() native "Main"; """]); static const MessageKind DART_EXT_NOT_SUPPORTED = const MessageKind( "The 'dart-ext' scheme is not supported.", howToFix: "Try analyzing the code with the --allow-native-extensions " "option.", examples: const [""" import 'dart-ext:main'; main() {} """]); static const MessageKind LIBRARY_TAG_MUST_BE_FIRST = const MessageKind( "The library declaration should come before other declarations.", howToFix: "Try moving the declaration to the top of the file.", examples: const [ """ import 'dart:core'; library foo; main() {} """, ]); static const MessageKind ONLY_ONE_LIBRARY_TAG = const MessageKind( "There can only be one library declaration.", howToFix: "Try removing all other library declarations.", examples: const [ """ library foo; library bar; main() {} """, """ library foo; import 'dart:core'; library bar; main() {} """, ]); static const MessageKind IMPORT_BEFORE_PARTS = const MessageKind( "Import declarations should come before parts.", howToFix: "Try moving this import further up in the file.", examples: const [ const <String, String>{ 'main.dart': """ library test.main; part 'part.dart'; import 'dart:core'; main() {} """, 'part.dart': """ part of test.main; """, }]); static const MessageKind EXPORT_BEFORE_PARTS = const MessageKind( "Export declarations should come before parts.", howToFix: "Try moving this export further up in the file.", examples: const [ const <String, String>{ 'main.dart': """ library test.main; part 'part.dart'; export 'dart:core'; main() {} """, 'part.dart': """ part of test.main; """, }]); ////////////////////////////////////////////////////////////////////////////// // Patch errors start. ////////////////////////////////////////////////////////////////////////////// static const MessageKind PATCH_RETURN_TYPE_MISMATCH = const MessageKind( "Patch return type '#{patchReturnType}' does not match " "'#{originReturnType}' on origin method '#{methodName}'."); static const MessageKind PATCH_REQUIRED_PARAMETER_COUNT_MISMATCH = const MessageKind( "Required parameter count of patch method " "(#{patchParameterCount}) does not match parameter count on origin " "method '#{methodName}' (#{originParameterCount})."); static const MessageKind PATCH_OPTIONAL_PARAMETER_COUNT_MISMATCH = const MessageKind( "Optional parameter count of patch method " "(#{patchParameterCount}) does not match parameter count on origin " "method '#{methodName}' (#{originParameterCount})."); static const MessageKind PATCH_OPTIONAL_PARAMETER_NAMED_MISMATCH = const MessageKind( "Optional parameters of origin and patch method " "'#{methodName}' must both be either named or positional."); static const MessageKind PATCH_PARAMETER_MISMATCH = const MessageKind( "Patch method parameter '#{patchParameter}' does not match " "'#{originParameter}' on origin method '#{methodName}'."); static const MessageKind PATCH_PARAMETER_TYPE_MISMATCH = const MessageKind( "Patch method parameter '#{parameterName}' type " "'#{patchParameterType}' does not match '#{originParameterType}' on " "origin method '#{methodName}'."); static const MessageKind PATCH_EXTERNAL_WITHOUT_IMPLEMENTATION = const MessageKind("External method without an implementation."); static const MessageKind PATCH_POINT_TO_FUNCTION = const MessageKind( "This is the function patch '#{functionName}'."); static const MessageKind PATCH_POINT_TO_CLASS = const MessageKind( "This is the class patch '#{className}'."); static const MessageKind PATCH_POINT_TO_GETTER = const MessageKind( "This is the getter patch '#{getterName}'."); static const MessageKind PATCH_POINT_TO_SETTER = const MessageKind( "This is the setter patch '#{setterName}'."); static const MessageKind PATCH_POINT_TO_CONSTRUCTOR = const MessageKind( "This is the constructor patch '#{constructorName}'."); static const MessageKind PATCH_POINT_TO_PARAMETER = const MessageKind( "This is the patch parameter '#{parameterName}'."); static const MessageKind PATCH_NON_EXISTING = const MessageKind( "Origin does not exist for patch '#{name}'."); // TODO(ahe): Eventually, this error should be removed as it will be handled // by the regular parser. static const MessageKind PATCH_NONPATCHABLE = const MessageKind( "Only classes and functions can be patched."); static const MessageKind PATCH_NON_EXTERNAL = const MessageKind( "Only external functions can be patched."); static const MessageKind PATCH_NON_CLASS = const MessageKind( "Patching non-class with class patch '#{className}'."); static const MessageKind PATCH_NON_GETTER = const MessageKind( "Cannot patch non-getter '#{name}' with getter patch."); static const MessageKind PATCH_NO_GETTER = const MessageKind( "No getter found for getter patch '#{getterName}'."); static const MessageKind PATCH_NON_SETTER = const MessageKind( "Cannot patch non-setter '#{name}' with setter patch."); static const MessageKind PATCH_NO_SETTER = const MessageKind( "No setter found for setter patch '#{setterName}'."); static const MessageKind PATCH_NON_CONSTRUCTOR = const MessageKind( "Cannot patch non-constructor with constructor patch " "'#{constructorName}'."); static const MessageKind PATCH_NON_FUNCTION = const MessageKind( "Cannot patch non-function with function patch " "'#{functionName}'."); static const MessageKind EXTERNAL_WITH_BODY = const MessageKind( "External function '#{functionName}' cannot have a function body.", options: const ["--output-type=dart"], howToFix: "Try removing the 'external' modifier or the function body.", examples: const [""" external foo() => 0; main() => foo(); """, """ external foo() {} main() => foo(); """]); ////////////////////////////////////////////////////////////////////////////// // Patch errors end. ////////////////////////////////////////////////////////////////////////////// static const String IMPORT_EXPERIMENTAL_MIRRORS_PADDING = '\n* '; static const MessageKind IMPORT_EXPERIMENTAL_MIRRORS = const MessageKind(r''' **************************************************************** * WARNING: dart:mirrors support in dart2js is experimental, * and not recommended. * This implementation of mirrors is incomplete, * and often greatly increases the size of the generated * JavaScript code. * * Your app imports dart:mirrors via:'''''' $IMPORT_EXPERIMENTAL_MIRRORS_PADDING#{importChain} * * You can disable this message by using the --enable-experimental-mirrors * command-line flag. * * To learn what to do next, please visit: * http://dartlang.org/dart2js-reflection **************************************************************** '''); static const MessageKind MIRRORS_LIBRARY_NEW_EMITTER = const MessageKind( "dart:mirrors library is not supported when using the new emitter " "(DART_VM_OPTIONS='-Ddart2js.use.new.emitter=true')"); static const MessageKind CALL_NOT_SUPPORTED_ON_NATIVE_CLASS = const MessageKind( "Non-supported 'call' member on a native class, or a " "subclass of a native class."); static const MessageKind DIRECTLY_THROWING_NSM = const MessageKind( "This 'noSuchMethod' implementation is guaranteed to throw an " "exception. The generated code will be smaller if it is " "rewritten.", howToFix: "Rewrite to " "'noSuchMethod(Invocation i) => super.noSuchMethod(i);'."); static const MessageKind COMPLEX_THROWING_NSM = const MessageKind( "This 'noSuchMethod' implementation is guaranteed to throw an " "exception. The generated code will be smaller and the compiler " "will be able to perform more optimizations if it is rewritten.", howToFix: "Rewrite to " "'noSuchMethod(Invocation i) => super.noSuchMethod(i);'."); static const MessageKind COMPLEX_RETURNING_NSM = const MessageKind( "Overriding 'noSuchMethod' causes the compiler to generate " "more code and prevents the compiler from doing some optimizations.", howToFix: "Consider removing this 'noSuchMethod' implementation."); toString() => template; Message message([Map arguments = const {}, bool terse = false]) { return new Message(this, arguments, terse); } bool get hasHowToFix => howToFix != null && howToFix != DONT_KNOW_HOW_TO_FIX; } class Message { final MessageKind kind; final Map arguments; final bool terse; String message; Message(this.kind, this.arguments, this.terse) { assert(() { computeMessage(); return true; }); } String computeMessage() { if (message == null) { message = kind.template; arguments.forEach((key, value) { message = message.replaceAll('#{${key}}', convertToString(value)); }); assert(invariant( CURRENT_ELEMENT_SPANNABLE, kind == MessageKind.GENERIC || !message.contains(new RegExp(r'#\{.+\}')), message: 'Missing arguments in error message: "$message"')); if (!terse && kind.hasHowToFix) { String howToFix = kind.howToFix; arguments.forEach((key, value) { howToFix = howToFix.replaceAll('#{${key}}', convertToString(value)); }); message = '$message\n$howToFix'; } } return message; } String toString() { return computeMessage(); } bool operator==(other) { if (other is !Message) return false; return (kind == other.kind) && (toString() == other.toString()); } int get hashCode => throw new UnsupportedError('Message.hashCode'); static String convertToString(value) { if (value is ErrorToken) { // Shouldn't happen. return value.assertionMessage; } else if (value is Token) { value = value.value; } return '$value'; } }