mirror of https://github.com/tc39/test262.git
77 lines
2.8 KiB
JavaScript
77 lines
2.8 KiB
JavaScript
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// Copyright (C) 2019 Caio Lima (Igalia SL). All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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description: PrivateName of a class is visible in its ComputetProperty scope
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esid: prod-ClassTail
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info: |
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ClassTail : ClassHeritage { ClassBody }
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1. Let lex be the LexicalEnvironment of the running execution context.
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2. Let classScope be NewDeclarativeEnvironment(lex).
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3. Let classScopeEnvRec be classScope's EnvironmentRecord.
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...
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8. If ClassBodyopt is present, then
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a. For each element dn of the PrivateBoundIdentifiers of ClassBodyopt,
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i. Perform classPrivateEnvRec.CreateImmutableBinding(dn, true).
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...
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15. Set the running execution context's LexicalEnvironment to classScope.
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16. Set the running execution context's PrivateEnvironment to classPrivateEnvironment.
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...
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27. For each ClassElement e in order from elements
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a. If IsStatic of e is false, then
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i. Let field be the result of ClassElementEvaluation for e with arguments proto and false.
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...
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FieldDefinition : ClassElementName Initializer
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1. Let name be the result of evaluating ClassElementName.
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...
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ClassElementName : PrivateIdentifier
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1. Let privateIdentifier be StringValue of PrivateIdentifier.
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2. Let privateName be NewPrivateName(privateIdentifier).
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3. Let scope be the running execution context's PrivateEnvironment.
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4. Let scopeEnvRec be scope's EnvironmentRecord.
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5. Perform ! scopeEnvRec.InitializeBinding(privateIdentifier, privateName).
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6. Return privateName.
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MemberExpression : MemberExpression . PrivateIdentifier
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...
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5. Return MakePrivateReference(bv, fieldNameString).
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MakePrivateReference ( baseValue, privateIdentifier )
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...
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2. Let privateNameBinding be ? ResolveBinding(privateIdentifier, env).
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3. Let privateName be GetValue(privateNameBinding).
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...
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GetValue (V)
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...
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5. If IsPropertyReference(V), then
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a. If HasPrimitiveBase(V), then
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i. Assert: In this case, base will never be null or undefined.
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ii. Let base be ToObject(base).
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b. If IsPrivateReference(V), then
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i. Return ? PrivateFieldGet(GetReferencedName(V), base).
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6. Else,
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a. Assert: base is an Environment Record.
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b. Return ? base.GetBindingValue(GetReferencedName(V), IsStrictReference(V)).
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PrivateFieldGet (P, O)
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1. Assert: P is a Private Name.
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2. Assert: Type(O) is Object.
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3. Let entry be PrivateFieldFind(P, O).
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4. If entry is empty, throw a TypeError exception.
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5. Return entry.[[PrivateFieldValue]].
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features: [class-fields-private, class]
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---*/
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const self = this;
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assert.throws(TypeError, function() {
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class C {
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#f = 'foo';
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[self.#f] = 'Test262';
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}
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}, 'access to a not defined private field in object should throw a TypeError');
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