| // Copyright (C) 2019 Caio Lima (Igalia SL). All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| |
| /*--- |
| description: PrivateName of a class is visible in its ComputetProperty scope |
| esid: prod-ClassTail |
| info: | |
| ClassTail : ClassHeritage { ClassBody } |
| 1. Let lex be the LexicalEnvironment of the running execution context. |
| 2. Let classScope be NewDeclarativeEnvironment(lex). |
| 3. Let classScopeEnvRec be classScope's EnvironmentRecord. |
| ... |
| 8. If ClassBodyopt is present, then |
| a. For each element dn of the PrivateBoundIdentifiers of ClassBodyopt, |
| i. Perform classPrivateEnvRec.CreateImmutableBinding(dn, true). |
| ... |
| 15. Set the running execution context's LexicalEnvironment to classScope. |
| 16. Set the running execution context's PrivateEnvironment to classPrivateEnvironment. |
| ... |
| 27. For each ClassElement e in order from elements |
| a. If IsStatic of e is false, then |
| i. Let field be the result of ClassElementEvaluation for e with arguments proto and false. |
| ... |
| |
| FieldDefinition : ClassElementName Initializer |
| 1. Let name be the result of evaluating ClassElementName. |
| ... |
| |
| ClassElementName : PrivateIdentifier |
| 1. Let privateIdentifier be StringValue of PrivateIdentifier. |
| 2. Let privateName be NewPrivateName(privateIdentifier). |
| 3. Let scope be the running execution context's PrivateEnvironment. |
| 4. Let scopeEnvRec be scope's EnvironmentRecord. |
| 5. Perform ! scopeEnvRec.InitializeBinding(privateIdentifier, privateName). |
| 6. Return privateName. |
| |
| MemberExpression : MemberExpression . PrivateIdentifier |
| ... |
| 5. Return MakePrivateReference(bv, fieldNameString). |
| |
| MakePrivateReference ( baseValue, privateIdentifier ) |
| ... |
| 2. Let privateNameBinding be ? ResolveBinding(privateIdentifier, env). |
| 3. Let privateName be GetValue(privateNameBinding). |
| ... |
| |
| GetValue (V) |
| ... |
| 5. If IsPropertyReference(V), then |
| a. If HasPrimitiveBase(V), then |
| i. Assert: In this case, base will never be null or undefined. |
| ii. Let base be ToObject(base). |
| b. If IsPrivateReference(V), then |
| i. Return ? PrivateFieldGet(GetReferencedName(V), base). |
| 6. Else, |
| a. Assert: base is an Environment Record. |
| b. Return ? base.GetBindingValue(GetReferencedName(V), IsStrictReference(V)). |
| |
| PrivateFieldGet (P, O) |
| 1. Assert: P is a Private Name. |
| 2. Assert: Type(O) is Object. |
| 3. Let entry be PrivateFieldFind(P, O). |
| 4. If entry is empty, throw a TypeError exception. |
| 5. Return entry.[[PrivateFieldValue]]. |
| |
| features: [class-fields-private, class-fields-public, class] |
| ---*/ |
| |
| const self = this; |
| assert.throws(TypeError, function() { |
| class C { |
| #f = 'foo'; |
| [self.#f] = 'Test262'; |
| } |
| }, 'access to a not defined private field in object should throw a TypeError'); |
| |