left-hand-side-private-reference-data-property-or.js (1914B)
1 // This file was procedurally generated from the following sources: 2 // - src/logical-assignment-private/or.case 3 // - src/logical-assignment-private/default/data-property.template 4 /*--- 5 description: Logical-or assignment with target being a private reference (to a field) 6 esid: sec-assignment-operators-runtime-semantics-evaluation 7 features: [class-fields-private, logical-assignment-operators] 8 flags: [generated] 9 info: | 10 sec-property-accessors-runtime-semantics-evaluation 11 MemberExpression : MemberExpression `.` PrivateIdentifier 12 13 1. Let _baseReference_ be the result of evaluating |MemberExpression|. 14 2. Let _baseValue_ be ? GetValue(_baseReference_). 15 3. Let _fieldNameString_ be the StringValue of |PrivateIdentifier|. 16 4. Return ! MakePrivateReference(_baseValue_, _fieldNameString_). 17 18 PutValue (V, W) 19 ... 20 5.b. If IsPrivateReference(_V_) is *true*, then 21 i. Return ? PrivateSet(_baseObj_, _V_.[[ReferencedName]], _W_). 22 23 PrivateSet (O, P, value) 24 ... 25 3. If _entry_.[[Kind]] is ~field~, then 26 a. Set _entry_.[[Value]] to _value_. 27 28 29 sec-assignment-operators-runtime-semantics-evaluation 30 AssignmentExpression : LeftHandSideExpression ||= AssignmentExpression 31 1. Let _lref_ be the result of evaluating |LeftHandSideExpression|. 32 2. Let _lval_ be ? GetValue(_lref_). 33 3. Let _lbool_ be ! ToBoolean(_lval_). 34 4. If _lbool_ is *true*, return _lval_. 35 ... 36 7. Perform ? PutValue(_lref_, _rval_). 37 8. Return _rval_. 38 ---*/ 39 40 41 class C { 42 #field = false; 43 compoundAssignment() { 44 return this.#field ||= true; 45 } 46 fieldValue() { 47 return this.#field; 48 } 49 } 50 51 const o = new C(); 52 assert.sameValue(o.compoundAssignment(), true, "The expression should evaluate to the result"); 53 assert.sameValue(o.fieldValue(), true, "PutValue should store the result in the private reference"); 54 55 reportCompare(0, 0);