diff --git a/src/compiler/checker.ts b/src/compiler/checker.ts index a98dfc1805e..d03b7a83b6f 100644 --- a/src/compiler/checker.ts +++ b/src/compiler/checker.ts @@ -10449,9 +10449,17 @@ namespace ts { // TS 1.0 spec (April 2014): 8.3.2 // Constructors of classes with no extends clause may not contain super calls, whereas // constructors of derived classes must contain at least one super call somewhere in their function body. - if (getClassExtendsHeritageClauseElement(node.parent)) { + let containingClassDecl = node.parent; + if (getClassExtendsHeritageClauseElement(containingClassDecl)) { + let containingClassSymbol = getSymbolOfNode(containingClassDecl); + let containingClassInstanceType = getDeclaredTypeOfSymbol(containingClassSymbol); + let baseConstructorType = getBaseConstructorTypeOfClass(containingClassInstanceType); if (containsSuperCall(node.body)) { + if (baseConstructorType === nullType) { + error(node, Diagnostics.A_constructor_cannot_contain_a_super_call_when_its_class_extends_null); + } + // The first statement in the body of a constructor (excluding prologue directives) must be a super call // if both of the following are true: // - The containing class is a derived class. @@ -10484,7 +10492,7 @@ namespace ts { } } } - else { + else if (baseConstructorType !== nullType) { error(node, Diagnostics.Constructors_for_derived_classes_must_contain_a_super_call); } } @@ -12777,28 +12785,7 @@ namespace ts { } let initializer = member.initializer; if (initializer) { - autoValue = getConstantValueForEnumMemberInitializer(initializer); - if (autoValue === undefined) { - if (enumIsConst) { - error(initializer, Diagnostics.In_const_enum_declarations_member_initializer_must_be_constant_expression); - } - else if (!ambient) { - // Only here do we need to check that the initializer is assignable to the enum type. - // If it is a constant value (not undefined), it is syntactically constrained to be a number. - // Also, we do not need to check this for ambients because there is already - // a syntax error if it is not a constant. - checkTypeAssignableTo(checkExpression(initializer), enumType, initializer, /*headMessage*/ undefined); - } - } - else if (enumIsConst) { - if (isNaN(autoValue)) { - error(initializer, Diagnostics.const_enum_member_initializer_was_evaluated_to_disallowed_value_NaN); - } - else if (!isFinite(autoValue)) { - error(initializer, Diagnostics.const_enum_member_initializer_was_evaluated_to_a_non_finite_value); - } - } - + autoValue = computeConstantValueForEnumMemberInitializer(initializer, enumType, enumIsConst, ambient); } else if (ambient && !enumIsConst) { autoValue = undefined; @@ -12812,8 +12799,36 @@ namespace ts { nodeLinks.flags |= NodeCheckFlags.EnumValuesComputed; } - function getConstantValueForEnumMemberInitializer(initializer: Expression): number { - return evalConstant(initializer); + function computeConstantValueForEnumMemberInitializer(initializer: Expression, enumType: Type, enumIsConst: boolean, ambient: boolean): number { + // Controls if error should be reported after evaluation of constant value is completed + // Can be false if another more precise error was already reported during evaluation. + let reportError = true; + let value = evalConstant(initializer); + + if (reportError) { + if (value === undefined) { + if (enumIsConst) { + error(initializer, Diagnostics.In_const_enum_declarations_member_initializer_must_be_constant_expression); + } + else if (!ambient) { + // Only here do we need to check that the initializer is assignable to the enum type. + // If it is a constant value (not undefined), it is syntactically constrained to be a number. + // Also, we do not need to check this for ambients because there is already + // a syntax error if it is not a constant. + checkTypeAssignableTo(checkExpression(initializer), enumType, initializer, /*headMessage*/ undefined); + } + } + else if (enumIsConst) { + if (isNaN(value)) { + error(initializer, Diagnostics.const_enum_member_initializer_was_evaluated_to_disallowed_value_NaN); + } + else if (!isFinite(value)) { + error(initializer, Diagnostics.const_enum_member_initializer_was_evaluated_to_a_non_finite_value); + } + } + } + + return value; function evalConstant(e: Node): number { switch (e.kind) { @@ -12922,6 +12937,8 @@ namespace ts { // illegal case: forward reference if (!isDefinedBefore(propertyDecl, member)) { + reportError = false; + error(e, Diagnostics.A_member_initializer_in_a_const_enum_declaration_cannot_reference_members_declared_after_it_including_members_defined_in_other_const_enums); return undefined; } diff --git a/src/compiler/diagnosticInformationMap.generated.ts b/src/compiler/diagnosticInformationMap.generated.ts index 854d214fb74..5ccc0a0db9b 100644 --- a/src/compiler/diagnosticInformationMap.generated.ts +++ b/src/compiler/diagnosticInformationMap.generated.ts @@ -425,7 +425,8 @@ namespace ts { JSX_element_class_does_not_support_attributes_because_it_does_not_have_a_0_property: { code: 2607, category: DiagnosticCategory.Error, key: "JSX element class does not support attributes because it does not have a '{0}' property" }, The_global_type_JSX_0_may_not_have_more_than_one_property: { code: 2608, category: DiagnosticCategory.Error, key: "The global type 'JSX.{0}' may not have more than one property" }, Cannot_emit_namespaced_JSX_elements_in_React: { code: 2650, category: DiagnosticCategory.Error, key: "Cannot emit namespaced JSX elements in React" }, - Merged_declaration_0_cannot_include_a_default_export_declaration_Consider_adding_a_separate_export_default_0_declaration_instead: { code: 2651, category: DiagnosticCategory.Error, key: "Merged declaration '{0}' cannot include a default export declaration. Consider adding a separate 'export default {0}' declaration instead." }, + A_member_initializer_in_a_const_enum_declaration_cannot_reference_members_declared_after_it_including_members_defined_in_other_const_enums: { code: 2651, category: DiagnosticCategory.Error, key: "A member initializer in a 'const' enum declaration cannot reference members declared after it, including members defined in other 'const' enums." }, + Merged_declaration_0_cannot_include_a_default_export_declaration_Consider_adding_a_separate_export_default_0_declaration_instead: { code: 2652, category: DiagnosticCategory.Error, key: "Merged declaration '{0}' cannot include a default export declaration. Consider adding a separate 'export default {0}' declaration instead." }, Import_declaration_0_is_using_private_name_1: { code: 4000, category: DiagnosticCategory.Error, key: "Import declaration '{0}' is using private name '{1}'." }, Type_parameter_0_of_exported_class_has_or_is_using_private_name_1: { code: 4002, category: DiagnosticCategory.Error, key: "Type parameter '{0}' of exported class has or is using private name '{1}'." }, Type_parameter_0_of_exported_interface_has_or_is_using_private_name_1: { code: 4004, category: DiagnosticCategory.Error, key: "Type parameter '{0}' of exported interface has or is using private name '{1}'." }, @@ -614,5 +615,6 @@ namespace ts { Expected_corresponding_JSX_closing_tag_for_0: { code: 17002, category: DiagnosticCategory.Error, key: "Expected corresponding JSX closing tag for '{0}'." }, JSX_attribute_expected: { code: 17003, category: DiagnosticCategory.Error, key: "JSX attribute expected." }, Cannot_use_JSX_unless_the_jsx_flag_is_provided: { code: 17004, category: DiagnosticCategory.Error, key: "Cannot use JSX unless the '--jsx' flag is provided." }, + A_constructor_cannot_contain_a_super_call_when_its_class_extends_null: { code: 17005, category: DiagnosticCategory.Error, key: "A constructor cannot contain a 'super' call when its class extends 'null'" }, }; } \ No newline at end of file diff --git a/src/compiler/diagnosticMessages.json b/src/compiler/diagnosticMessages.json index fd235a9d38a..e138e2ddac4 100644 --- a/src/compiler/diagnosticMessages.json +++ b/src/compiler/diagnosticMessages.json @@ -1,4 +1,4 @@ -{ + { "Unterminated string literal.": { "category": "Error", "code": 1002 @@ -1689,9 +1689,13 @@ "category": "Error", "code": 2650 }, - "Merged declaration '{0}' cannot include a default export declaration. Consider adding a separate 'export default {0}' declaration instead.": { + "A member initializer in a 'const' enum declaration cannot reference members declared after it, including members defined in other 'const' enums.": { "category": "Error", "code": 2651 + }, + "Merged declaration '{0}' cannot include a default export declaration. Consider adding a separate 'export default {0}' declaration instead.": { + "category": "Error", + "code": 2652 }, "Import declaration '{0}' is using private name '{1}'.": { "category": "Error", @@ -2449,5 +2453,9 @@ "Cannot use JSX unless the '--jsx' flag is provided.": { "category": "Error", "code": 17004 + }, + "A constructor cannot contain a 'super' call when its class extends 'null'": { + "category": "Error", + "code": 17005 } } diff --git a/src/compiler/types.ts b/src/compiler/types.ts index fb3003b9c78..7a8389127a3 100644 --- a/src/compiler/types.ts +++ b/src/compiler/types.ts @@ -1779,10 +1779,10 @@ namespace ts { StringLike = String | StringLiteral, NumberLike = Number | Enum, ObjectType = Class | Interface | Reference | Tuple | Anonymous, - UnionOrIntersection = Union | Intersection, + UnionOrIntersection = Union | Intersection, StructuredType = ObjectType | Union | Intersection, /* @internal */ - RequiresWidening = ContainsUndefinedOrNull | ContainsObjectLiteral + RequiresWidening = ContainsUndefinedOrNull | ContainsObjectLiteral } // Properties common to all types diff --git a/tests/baselines/reference/classExtendsNull.errors.txt b/tests/baselines/reference/classExtendsNull.errors.txt new file mode 100644 index 00000000000..7bb44774826 --- /dev/null +++ b/tests/baselines/reference/classExtendsNull.errors.txt @@ -0,0 +1,21 @@ +tests/cases/compiler/classExtendsNull.ts(2,5): error TS17005: A constructor cannot contain a 'super' call when its class extends 'null' + + +==== tests/cases/compiler/classExtendsNull.ts (1 errors) ==== + class C extends null { + constructor() { + ~~~~~~~~~~~~~~~ + super(); + ~~~~~~~~~~~~~~~~ + return Object.create(null); + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + } + ~~~~~ +!!! error TS17005: A constructor cannot contain a 'super' call when its class extends 'null' + } + + class D extends null { + constructor() { + return Object.create(null); + } + } \ No newline at end of file diff --git a/tests/baselines/reference/classExtendsNull.js b/tests/baselines/reference/classExtendsNull.js new file mode 100644 index 00000000000..5627f10dca6 --- /dev/null +++ b/tests/baselines/reference/classExtendsNull.js @@ -0,0 +1,35 @@ +//// [classExtendsNull.ts] +class C extends null { + constructor() { + super(); + return Object.create(null); + } +} + +class D extends null { + constructor() { + return Object.create(null); + } +} + +//// [classExtendsNull.js] +var __extends = (this && this.__extends) || function (d, b) { + for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; + function __() { this.constructor = d; } + d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __()); +}; +var C = (function (_super) { + __extends(C, _super); + function C() { + _super.call(this); + return Object.create(null); + } + return C; +})(null); +var D = (function (_super) { + __extends(D, _super); + function D() { + return Object.create(null); + } + return D; +})(null); diff --git a/tests/baselines/reference/constEnumErrors.errors.txt b/tests/baselines/reference/constEnumErrors.errors.txt index be7dad54eeb..4236544defa 100644 --- a/tests/baselines/reference/constEnumErrors.errors.txt +++ b/tests/baselines/reference/constEnumErrors.errors.txt @@ -1,6 +1,6 @@ tests/cases/compiler/constEnumErrors.ts(1,12): error TS2300: Duplicate identifier 'E'. tests/cases/compiler/constEnumErrors.ts(5,8): error TS2300: Duplicate identifier 'E'. -tests/cases/compiler/constEnumErrors.ts(12,9): error TS2474: In 'const' enum declarations member initializer must be constant expression. +tests/cases/compiler/constEnumErrors.ts(12,9): error TS2651: A member initializer in a 'const' enum declaration cannot reference members declared after it, including members defined in other 'const' enums. tests/cases/compiler/constEnumErrors.ts(14,9): error TS2474: In 'const' enum declarations member initializer must be constant expression. tests/cases/compiler/constEnumErrors.ts(15,10): error TS2474: In 'const' enum declarations member initializer must be constant expression. tests/cases/compiler/constEnumErrors.ts(22,13): error TS2476: A const enum member can only be accessed using a string literal. @@ -31,7 +31,7 @@ tests/cases/compiler/constEnumErrors.ts(42,9): error TS2478: 'const' enum member // forward reference to the element of the same enum X = Y, ~ -!!! error TS2474: In 'const' enum declarations member initializer must be constant expression. +!!! error TS2651: A member initializer in a 'const' enum declaration cannot reference members declared after it, including members defined in other 'const' enums. // forward reference to the element of the same enum Y = E1.Z, ~~~~ diff --git a/tests/baselines/reference/defaultExportsCannotMerge01.errors.txt b/tests/baselines/reference/defaultExportsCannotMerge01.errors.txt index 6e3955b4ef8..be08d976eeb 100644 --- a/tests/baselines/reference/defaultExportsCannotMerge01.errors.txt +++ b/tests/baselines/reference/defaultExportsCannotMerge01.errors.txt @@ -1,5 +1,5 @@ -tests/cases/conformance/es6/modules/m1.ts(2,25): error TS2651: Merged declaration 'Decl' cannot include a default export declaration. Consider adding a separate 'export default Decl' declaration instead. -tests/cases/conformance/es6/modules/m1.ts(11,18): error TS2651: Merged declaration 'Decl' cannot include a default export declaration. Consider adding a separate 'export default Decl' declaration instead. +tests/cases/conformance/es6/modules/m1.ts(2,25): error TS2652: Merged declaration 'Decl' cannot include a default export declaration. Consider adding a separate 'export default Decl' declaration instead. +tests/cases/conformance/es6/modules/m1.ts(11,18): error TS2652: Merged declaration 'Decl' cannot include a default export declaration. Consider adding a separate 'export default Decl' declaration instead. tests/cases/conformance/es6/modules/m2.ts(5,8): error TS2304: Cannot find name 'Entity'. tests/cases/conformance/es6/modules/m2.ts(6,8): error TS2503: Cannot find namespace 'Entity'. tests/cases/conformance/es6/modules/m2.ts(8,8): error TS2339: Property 'x' does not exist on type '() => number'. @@ -10,7 +10,7 @@ tests/cases/conformance/es6/modules/m2.ts(9,8): error TS2339: Property 'y' does export default function Decl() { ~~~~ -!!! error TS2651: Merged declaration 'Decl' cannot include a default export declaration. Consider adding a separate 'export default Decl' declaration instead. +!!! error TS2652: Merged declaration 'Decl' cannot include a default export declaration. Consider adding a separate 'export default Decl' declaration instead. return 0; } @@ -21,7 +21,7 @@ tests/cases/conformance/es6/modules/m2.ts(9,8): error TS2339: Property 'y' does export namespace Decl { ~~~~ -!!! error TS2651: Merged declaration 'Decl' cannot include a default export declaration. Consider adding a separate 'export default Decl' declaration instead. +!!! error TS2652: Merged declaration 'Decl' cannot include a default export declaration. Consider adding a separate 'export default Decl' declaration instead. export var x = 10; export var y = 20; diff --git a/tests/baselines/reference/defaultExportsCannotMerge02.errors.txt b/tests/baselines/reference/defaultExportsCannotMerge02.errors.txt index ef4ecdccfc3..ad9b85c7e94 100644 --- a/tests/baselines/reference/defaultExportsCannotMerge02.errors.txt +++ b/tests/baselines/reference/defaultExportsCannotMerge02.errors.txt @@ -1,5 +1,5 @@ -tests/cases/conformance/es6/modules/m1.ts(2,22): error TS2651: Merged declaration 'Decl' cannot include a default export declaration. Consider adding a separate 'export default Decl' declaration instead. -tests/cases/conformance/es6/modules/m1.ts(5,18): error TS2651: Merged declaration 'Decl' cannot include a default export declaration. Consider adding a separate 'export default Decl' declaration instead. +tests/cases/conformance/es6/modules/m1.ts(2,22): error TS2652: Merged declaration 'Decl' cannot include a default export declaration. Consider adding a separate 'export default Decl' declaration instead. +tests/cases/conformance/es6/modules/m1.ts(5,18): error TS2652: Merged declaration 'Decl' cannot include a default export declaration. Consider adding a separate 'export default Decl' declaration instead. tests/cases/conformance/es6/modules/m2.ts(3,1): error TS2348: Value of type 'typeof Decl' is not callable. Did you mean to include 'new'? tests/cases/conformance/es6/modules/m2.ts(6,8): error TS2503: Cannot find namespace 'Entity'. tests/cases/conformance/es6/modules/m2.ts(8,13): error TS2339: Property 'p1' does not exist on type 'Decl'. @@ -10,12 +10,12 @@ tests/cases/conformance/es6/modules/m2.ts(8,20): error TS2339: Property 'p2' doe export default class Decl { ~~~~ -!!! error TS2651: Merged declaration 'Decl' cannot include a default export declaration. Consider adding a separate 'export default Decl' declaration instead. +!!! error TS2652: Merged declaration 'Decl' cannot include a default export declaration. Consider adding a separate 'export default Decl' declaration instead. } export interface Decl { ~~~~ -!!! error TS2651: Merged declaration 'Decl' cannot include a default export declaration. Consider adding a separate 'export default Decl' declaration instead. +!!! error TS2652: Merged declaration 'Decl' cannot include a default export declaration. Consider adding a separate 'export default Decl' declaration instead. p1: number; p2: number; } diff --git a/tests/baselines/reference/defaultExportsCannotMerge03.errors.txt b/tests/baselines/reference/defaultExportsCannotMerge03.errors.txt index 219b59a5633..b1d405671e3 100644 --- a/tests/baselines/reference/defaultExportsCannotMerge03.errors.txt +++ b/tests/baselines/reference/defaultExportsCannotMerge03.errors.txt @@ -1,6 +1,6 @@ -tests/cases/conformance/es6/modules/m1.ts(2,22): error TS2651: Merged declaration 'Decl' cannot include a default export declaration. Consider adding a separate 'export default Decl' declaration instead. +tests/cases/conformance/es6/modules/m1.ts(2,22): error TS2652: Merged declaration 'Decl' cannot include a default export declaration. Consider adding a separate 'export default Decl' declaration instead. tests/cases/conformance/es6/modules/m1.ts(5,11): error TS2518: Only an ambient class can be merged with an interface. -tests/cases/conformance/es6/modules/m1.ts(5,11): error TS2651: Merged declaration 'Decl' cannot include a default export declaration. Consider adding a separate 'export default Decl' declaration instead. +tests/cases/conformance/es6/modules/m1.ts(5,11): error TS2652: Merged declaration 'Decl' cannot include a default export declaration. Consider adding a separate 'export default Decl' declaration instead. tests/cases/conformance/es6/modules/m2.ts(3,1): error TS2348: Value of type 'typeof Decl' is not callable. Did you mean to include 'new'? tests/cases/conformance/es6/modules/m2.ts(6,8): error TS2503: Cannot find namespace 'Entity'. tests/cases/conformance/es6/modules/m2.ts(8,13): error TS2339: Property 'p1' does not exist on type 'Decl'. @@ -11,14 +11,14 @@ tests/cases/conformance/es6/modules/m2.ts(8,20): error TS2339: Property 'p2' doe export default class Decl { ~~~~ -!!! error TS2651: Merged declaration 'Decl' cannot include a default export declaration. Consider adding a separate 'export default Decl' declaration instead. +!!! error TS2652: Merged declaration 'Decl' cannot include a default export declaration. Consider adding a separate 'export default Decl' declaration instead. } interface Decl { ~~~~ !!! error TS2518: Only an ambient class can be merged with an interface. ~~~~ -!!! error TS2651: Merged declaration 'Decl' cannot include a default export declaration. Consider adding a separate 'export default Decl' declaration instead. +!!! error TS2652: Merged declaration 'Decl' cannot include a default export declaration. Consider adding a separate 'export default Decl' declaration instead. p1: number; p2: number; } diff --git a/tests/baselines/reference/defaultExportsCannotMerge04.errors.txt b/tests/baselines/reference/defaultExportsCannotMerge04.errors.txt index ee36491e0c7..000a9b8f30e 100644 --- a/tests/baselines/reference/defaultExportsCannotMerge04.errors.txt +++ b/tests/baselines/reference/defaultExportsCannotMerge04.errors.txt @@ -1,5 +1,5 @@ -tests/cases/conformance/es6/modules/defaultExportsCannotMerge04.ts(2,25): error TS2651: Merged declaration 'Foo' cannot include a default export declaration. Consider adding a separate 'export default Foo' declaration instead. -tests/cases/conformance/es6/modules/defaultExportsCannotMerge04.ts(5,11): error TS2651: Merged declaration 'Foo' cannot include a default export declaration. Consider adding a separate 'export default Foo' declaration instead. +tests/cases/conformance/es6/modules/defaultExportsCannotMerge04.ts(2,25): error TS2652: Merged declaration 'Foo' cannot include a default export declaration. Consider adding a separate 'export default Foo' declaration instead. +tests/cases/conformance/es6/modules/defaultExportsCannotMerge04.ts(5,11): error TS2652: Merged declaration 'Foo' cannot include a default export declaration. Consider adding a separate 'export default Foo' declaration instead. tests/cases/conformance/es6/modules/defaultExportsCannotMerge04.ts(9,11): error TS2395: Individual declarations in merged declaration 'Foo' must be all exported or all local. tests/cases/conformance/es6/modules/defaultExportsCannotMerge04.ts(12,18): error TS2395: Individual declarations in merged declaration 'Foo' must be all exported or all local. @@ -8,12 +8,12 @@ tests/cases/conformance/es6/modules/defaultExportsCannotMerge04.ts(12,18): error export default function Foo() { ~~~ -!!! error TS2651: Merged declaration 'Foo' cannot include a default export declaration. Consider adding a separate 'export default Foo' declaration instead. +!!! error TS2652: Merged declaration 'Foo' cannot include a default export declaration. Consider adding a separate 'export default Foo' declaration instead. } namespace Foo { ~~~ -!!! error TS2651: Merged declaration 'Foo' cannot include a default export declaration. Consider adding a separate 'export default Foo' declaration instead. +!!! error TS2652: Merged declaration 'Foo' cannot include a default export declaration. Consider adding a separate 'export default Foo' declaration instead. export var x; } diff --git a/tests/cases/compiler/classExtendsNull.ts b/tests/cases/compiler/classExtendsNull.ts new file mode 100644 index 00000000000..5532fa72702 --- /dev/null +++ b/tests/cases/compiler/classExtendsNull.ts @@ -0,0 +1,12 @@ +class C extends null { + constructor() { + super(); + return Object.create(null); + } +} + +class D extends null { + constructor() { + return Object.create(null); + } +} \ No newline at end of file