| // 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 input array of Strings, successful conversion |
| 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: String |
| Result: |
| 1. Let n be StringToBigInt(prim). |
| 2. If n is NaN, throw a SyntaxError exception. |
| 3. Return n. |
| |
| StringToBigInt (argument) |
| Apply the algorithm in 3.1.3.1 with the following changes: |
| * Replace the StrUnsignedDecimalLiteral production with DecimalDigits to |
| not allow Infinity, decimal points, or exponents. |
| * If the MV is NaN, return NaN, otherwise return the BigInt which exactly |
| corresponds to the MV, rather than rounding to a Number. |
| |
| includes: [testBigIntTypedArray.js] |
| features: [BigInt, TypedArray] |
| ---*/ |
| |
| testWithBigIntTypedArrayConstructors(function(TA) { |
| var typedArray = new TA(1); |
| |
| typedArray[0] = ''; |
| assert.sameValue(typedArray[0], 0n); |
| |
| typedArray[0] = '1'; |
| assert.sameValue(typedArray[0], 1n); |
| |
| assert.throws(SyntaxError, function() { |
| typedArray[0] = '1n'; |
| }, "A StringNumericLiteral may not include a BigIntLiteralSuffix."); |
| |
| assert.throws(SyntaxError, function() { |
| typedArray[0] = "Infinity"; |
| }, "Replace the StrUnsignedDecimalLiteral production with DecimalDigits to not allow Infinity.."); |
| |
| assert.throws(SyntaxError, function() { |
| typedArray[0] = "1.1"; |
| }, "Replace the StrUnsignedDecimalLiteral production with DecimalDigits to not allow... decimal points..."); |
| |
| assert.throws(SyntaxError, function() { |
| typedArray[0] = "1e7"; |
| }, "Replace the StrUnsignedDecimalLiteral production with DecimalDigits to not allow... exponents..."); |
| |
| }); |