Resizable ArrayBuffer: ArrayBuffer constructor (#3018)

* Add "feature" for "Resizable ArrayBuffer" proposal

* Resizable ArrayBuffer: ArrayBuffer constructor

features.txt

@@ -331,3 +331,7 @@ import-assertions
 # JSON modules
 # https://github.com/tc39/proposal-json-modules
 json-modules
+
+# Resizable Arraybuffer
+# https://github.com/tc39/proposal-resizablearraybuffer
+resizable-arraybuffer

test/built-ins/ArrayBuffer/options-maxbytelength-diminuitive.js

@@ -0,0 +1,22 @@
+// Copyright (C) 2021 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-arraybuffer-constructor
+description: |
+  Invoked with an options object whose `maxByteLength` property is less than
+  the length.
+info:
+  ArrayBuffer( length [ , options ] )
+
+  1. If NewTarget is undefined, throw a TypeError exception.
+  2. Let byteLength be ? ToIndex(length).
+  3. Let requestedMaxByteLength be ? GetArrayBufferMaxByteLengthOption(options).
+  4. If requestedMaxByteLength is empty, then
+     a. [...]
+  5. If byteLength > requestedMaxByteLength, throw a RangeError exception.
+features: [resizable-arraybuffer]
+---*/
+
+assert.throws(RangeError, function() {
+  new ArrayBuffer(1, {maxByteLength: 0});
+});

test/built-ins/ArrayBuffer/options-maxbytelength-excessive.js

@@ -0,0 +1,28 @@
+// Copyright (C) 2021 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-arraybuffer-constructor
+description: |
+  Invoked with an options object whose `maxByteLength` property exceeds the
+  maximum length value
+info:
+  ArrayBuffer( length [ , options ] )
+
+  1. If NewTarget is undefined, throw a TypeError exception.
+  2. Let byteLength be ? ToIndex(length).
+  3. Let requestedMaxByteLength be ? GetArrayBufferMaxByteLengthOption(options).
+  [...]
+
+  1.1.5 GetArrayBufferMaxByteLengthOption ( options )
+
+  1. If Type(options) is not Object, return empty.
+  2. Let maxByteLength be ? Get(options, "maxByteLength").
+  3. If maxByteLength is undefined, return empty.
+  4. Return ? ToIndex(maxByteLength).
+features: [resizable-arraybuffer]
+---*/
+
+assert.throws(RangeError, function() {
+  // Math.pow(2, 53) = 9007199254740992
+  new ArrayBuffer(0, { maxByteLength: 9007199254740992 });
+});

test/built-ins/ArrayBuffer/options-maxbytelength-negative.js

@@ -0,0 +1,25 @@
+// Copyright (C) 2021 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-arraybuffer-constructor
+description: Invoked with an options object whose `maxByteLength` property is negative
+info:
+  ArrayBuffer( length [ , options ] )
+
+  1. If NewTarget is undefined, throw a TypeError exception.
+  2. Let byteLength be ? ToIndex(length).
+  3. Let requestedMaxByteLength be ? GetArrayBufferMaxByteLengthOption(options).
+  [...]
+
+  1.1.5 GetArrayBufferMaxByteLengthOption ( options )
+
+  1. If Type(options) is not Object, return empty.
+  2. Let maxByteLength be ? Get(options, "maxByteLength").
+  3. If maxByteLength is undefined, return empty.
+  4. Return ? ToIndex(maxByteLength).
+features: [resizable-arraybuffer]
+---*/
+
+assert.throws(RangeError, function() {
+  new ArrayBuffer(0, { maxByteLength: -1 });
+});

test/built-ins/ArrayBuffer/options-maxbytelength-object.js

@@ -0,0 +1,45 @@
+// Copyright (C) 2021 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-arraybuffer-constructor
+description: |
+  Invoked with an options object whose `maxByteLength` property cannot be
+  coerced to a primitive value
+info:
+  ArrayBuffer( length [ , options ] )
+
+  1. If NewTarget is undefined, throw a TypeError exception.
+  2. Let byteLength be ? ToIndex(length).
+  3. Let requestedMaxByteLength be ? GetArrayBufferMaxByteLengthOption(options).
+  [...]
+
+  1.1.5 GetArrayBufferMaxByteLengthOption ( options )
+
+  1. If Type(options) is not Object, return empty.
+  2. Let maxByteLength be ? Get(options, "maxByteLength").
+  3. If maxByteLength is undefined, return empty.
+  4. Return ? ToIndex(maxByteLength).
+features: [resizable-arraybuffer]
+---*/
+
+var log = [];
+var options = {
+  maxByteLength: {
+    toString: function() {
+      log.push('toString');
+      return {};
+    },
+    valueOf: function() {
+      log.push('valueOf');
+      return {};
+    }
+  }
+};
+
+assert.throws(TypeError, function() {
+  new ArrayBuffer(0, options);
+});
+
+assert.sameValue(log.length, 2);
+assert.sameValue(log[0], 'valueOf');
+assert.sameValue(log[1], 'toString');

test/built-ins/ArrayBuffer/options-maxbytelength-poisoned.js

@@ -0,0 +1,29 @@
+// Copyright (C) 2021 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-arraybuffer-constructor
+description: Invoked with an options object whose `maxByteLength` property throws
+info: |
+  ArrayBuffer( length [ , options ] )
+
+  1. If NewTarget is undefined, throw a TypeError exception.
+  2. Let byteLength be ? ToIndex(length).
+  3. Let requestedMaxByteLength be ? GetArrayBufferMaxByteLengthOption(options).
+  [...]
+
+  1.1.5 GetArrayBufferMaxByteLengthOption ( options )
+
+  1. If Type(options) is not Object, return empty.
+  2. Let maxByteLength be ? Get(options, "maxByteLength").
+features: [resizable-arraybuffer]
+---*/
+
+var options = {
+  get maxByteLength() {
+    throw new Test262Error();
+  }
+};
+
+assert.throws(Test262Error, function() {
+  new ArrayBuffer(0, options);
+});

test/built-ins/ArrayBuffer/options-maxbytelength-undefined.js

@@ -0,0 +1,24 @@
+// Copyright (C) 2021 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-arraybuffer-constructor
+description: Invoked with an options object whose `maxByteLength` property is undefined
+info: |
+  ArrayBuffer( length [ , options ] )
+
+  1. If NewTarget is undefined, throw a TypeError exception.
+  2. Let byteLength be ? ToIndex(length).
+  3. Let requestedMaxByteLength be ? GetArrayBufferMaxByteLengthOption(options).
+  4. If requestedMaxByteLength is empty, then
+     a. Return ? AllocateArrayBuffer(NewTarget, byteLength).
+
+  1.1.5 GetArrayBufferMaxByteLengthOption ( options )
+
+  1. If Type(options) is not Object, return empty.
+  2. Let maxByteLength be ? Get(options, "maxByteLength").
+  3. If maxByteLength is undefined, return empty.
+features: [resizable-arraybuffer]
+---*/
+
+assert.sameValue(new ArrayBuffer(0, {}).resizable, false);
+assert.sameValue(new ArrayBuffer(0, {maxByteLength: undefined}).resizable, false);

test/built-ins/ArrayBuffer/options-non-object.js

@@ -0,0 +1,27 @@
+// Copyright (C) 2021 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-arraybuffer-constructor
+description: Invoked with a non-object value for options
+info: |
+  ArrayBuffer( length [ , options ] )
+
+  1. If NewTarget is undefined, throw a TypeError exception.
+  2. Let byteLength be ? ToIndex(length).
+  3. Let requestedMaxByteLength be ? GetArrayBufferMaxByteLengthOption(options).
+  4. If requestedMaxByteLength is empty, then
+     a. Return ? AllocateArrayBuffer(NewTarget, byteLength).
+
+  1.1.5 GetArrayBufferMaxByteLengthOption ( options )
+
+  1. If Type(options) is not Object, return empty.
+features: [resizable-arraybuffer]
+---*/
+
+assert.sameValue(new ArrayBuffer(0, null).resizable, false, 'null');
+assert.sameValue(new ArrayBuffer(0, true).resizable, false, 'boolean');
+assert.sameValue(new ArrayBuffer(0, Symbol(3)).resizable, false, 'symbol');
+assert.sameValue(new ArrayBuffer(0, 1n).resizable, false, 'bigint');
+assert.sameValue(new ArrayBuffer(0, 'string').resizable, false, 'string');
+assert.sameValue(new ArrayBuffer(0, 9).resizable, false, 'number');
+assert.sameValue(new ArrayBuffer(0, undefined).resizable, false, 'undefined');