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const otherGlobal = newGlobal();
// Create with new ArrayBuffer and offset.
for (var constructor of typedArrayConstructors) {
const elementSize = constructor.BYTES_PER_ELEMENT;
let ab = new constructor(10).map((v, i) => i).buffer;
let ta = new constructor(ab, 2 * elementSize, 6);
ta.constructor = {
[Symbol.species]: function(len) {
return new constructor(new ArrayBuffer((len + 4) * elementSize), 4 * elementSize);
}
};
let tb = ta.slice(0);
assertEqArray(ta, [2, 3, 4, 5, 6, 7]);
assertEqArray(tb, [2, 3, 4, 5, 6, 7]);
}
// Source and target arrays use the same ArrayBuffer, target range before source range.
for (var constructor of typedArrayConstructors) {
const elementSize = constructor.BYTES_PER_ELEMENT;
let ab = new constructor(10).map((v, i) => i).buffer;
let ta = new constructor(ab, 2 * elementSize, 6);
ta.constructor = {
[Symbol.species]: function(len) {
return new constructor(ab, 0, len);
}
};
let tb = ta.slice(0);
assertEqArray(ta, [4, 5, 6, 7, 6, 7]);
assertEqArray(tb, [2, 3, 4, 5, 6, 7]);
assertEqArray(new constructor(ab), [2, 3, 4, 5, 6, 7, 6, 7, 8, 9]);
}
// Source and target arrays use the same ArrayBuffer, target range after source range.
for (var constructor of typedArrayConstructors) {
const elementSize = constructor.BYTES_PER_ELEMENT;
let ab = new constructor(10).map((v, i) => i + 1).buffer;
let ta = new constructor(ab, 0, 6);
ta.constructor = {
[Symbol.species]: function(len) {
return new constructor(ab, 2 * elementSize, len);
}
};
let tb = ta.slice(0);
assertEqArray(ta, [1, 2, 1, 2, 1, 2]);
assertEqArray(tb, [1, 2, 1, 2, 1, 2]);
assertEqArray(new constructor(ab), [1, 2, 1, 2, 1, 2, 1, 2, 9, 10]);
}
// Tricky: Same as above, but with SharedArrayBuffer and different compartments.
if (this.setSharedObject && this.SharedArrayBuffer) {
for (var constructor of typedArrayConstructors) {
const elementSize = constructor.BYTES_PER_ELEMENT;
let ts = new constructor(new SharedArrayBuffer(10 * elementSize));
for (let i = 0; i < ts.length; i++) {
ts[i] = i + 1;
}
let ab = ts.buffer;
let ta = new constructor(ab, 0, 6);
ta.constructor = {
[Symbol.species]: function(len) {
setSharedObject(ab);
try {
return otherGlobal.eval(`
new ${constructor.name}(getSharedObject(), ${2 * elementSize}, ${len});
`);
} finally {
setSharedObject(null);
}
}
};
let tb = ta.slice(0);
assertEqArray(ta, [1, 2, 1, 2, 1, 2]);
assertEqArray(tb, [1, 2, 1, 2, 1, 2]);
assertEqArray(new constructor(ab), [1, 2, 1, 2, 1, 2, 1, 2, 9, 10]);
}
}
if (typeof reportCompare === "function")
reportCompare(true, true);
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