mirror of https://github.com/tc39/test262.git
57 lines
1.9 KiB
JavaScript
57 lines
1.9 KiB
JavaScript
// This file was procedurally generated from the following sources:
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// - src/logical-assignment-private/and.case
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// - src/logical-assignment-private/default/data-property-short-circuit.template
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/*---
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description: Logical-and assignment with target being a private reference (to a field (short-circuit version))
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esid: sec-assignment-operators-runtime-semantics-evaluation
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features: [class-fields-private, logical-assignment-operators]
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flags: [generated]
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info: |
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sec-property-accessors-runtime-semantics-evaluation
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MemberExpression : MemberExpression `.` PrivateIdentifier
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1. Let _baseReference_ be the result of evaluating |MemberExpression|.
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2. Let _baseValue_ be ? GetValue(_baseReference_).
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3. Let _fieldNameString_ be the StringValue of |PrivateIdentifier|.
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4. Return ! MakePrivateReference(_baseValue_, _fieldNameString_).
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PutValue (V, W)
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...
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5.b. If IsPrivateReference(_V_) is *true*, then
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i. Return ? PrivateSet(_baseObj_, _V_.[[ReferencedName]], _W_).
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PrivateSet (O, P, value)
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...
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3. If _entry_.[[Kind]] is ~field~, then
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a. Set _entry_.[[Value]] to _value_.
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sec-assignment-operators-runtime-semantics-evaluation
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AssignmentExpression : LeftHandSideExpression &&= AssignmentExpression
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1. Let _lref_ be the result of evaluating |LeftHandSideExpression|.
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2. Let _lval_ be ? GetValue(_lref_).
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3. Let _lbool_ be ! ToBoolean(_lval_).
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4. If _lbool_ is *false*, return _lval_.
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...
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7. Perform ? PutValue(_lref_, _rval_).
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8. Return _rval_.
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---*/
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function doNotCall() {
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throw new Test262Error("The right-hand side should not be evaluated");
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}
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class C {
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#field = false;
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compoundAssignment() {
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return this.#field &&= doNotCall();
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}
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fieldValue() {
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return this.#field;
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}
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}
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const o = new C();
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assert.sameValue(o.compoundAssignment(), false, "The expression should evaluate to the short-circuit value");
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