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// Copyright (C) 2018 Valerie Young. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-assignment-operators-runtime-semantics-evaluation
description: >
Behavior for assigning Booleans to BigInt TypedArray
info: |
Runtime Semantics: Evaluation
AssignmentExpression : LeftHandSideExpression = AssignmentExpression
1. If LeftHandSideExpression is neither an ObjectLiteral nor an ArrayLiteral, then
...
f. Perform ? PutValue(lref, rval).
...
PutValue ( V, W )
...
6. Else if IsPropertyReference(V) is true, then
a. If HasPrimitiveBase(V) is true, then
i. Assert: In this case, base will never be undefined or null.
ii. Set base to ! ToObject(base).
b. Let succeeded be ? base.[[Set]](GetReferencedName(V), W, GetThisValue(V)).
c. If succeeded is false and IsStrictReference(V) is true, throw a TypeError
exception.
d. Return.
[[Set]] ( P, V, Receiver )
When the [[Set]] internal method of an Integer-Indexed exotic object O is
called with property key P, value V, and ECMAScript language value Receiver,
the following steps are taken:
1. Assert: IsPropertyKey(P) is true.
2. If Type(P) is String, then
a. Let numericIndex be ! CanonicalNumericIndexString(P).
b. If numericIndex is not undefined, then
i. Return ? IntegerIndexedElementSet(O, numericIndex, V).
IntegerIndexedElementSet ( O, index, value )
5. If arrayTypeName is "BigUint64Array" or "BigInt64Array",
let numValue be ? ToBigInt(value).
...
ToBigInt ( argument )
Object, Apply the following steps:
1. Let prim be ? ToPrimitive(argument, hint Number).
2. Return the value that prim corresponds to in Table [BigInt Conversions]
BigInt Conversions
Argument Type: Boolean
Result: Return 1n if prim is true and 0n if prim is false.
includes: [testBigIntTypedArray.js]
features: [align-detached-buffer-semantics-with-web-reality, BigInt, TypedArray]
---*/
testWithBigIntTypedArrayConstructors(function(TA) {
var typedArray = new TA(2);
typedArray[0] = false;
typedArray[1] = true;
assert.sameValue(typedArray[0], 0n, 'The value of typedArray[0] is 0n');
assert.sameValue(typedArray[1], 1n, 'The value of typedArray[1] is 1n');
});
reportCompare(0, 0);
|
