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/*global SharedArrayBuffer*/
'use strict';
const common = require('../common');
const fixtures = require('../common/fixtures');
const assert = require('assert');
const { types, inspect } = require('util');
const path = require('path');
const fs = require('fs');
const vm = require('vm');
const { JSStream } = process.binding('js_stream');
common.crashOnUnhandledRejection();
const external = (new JSStream())._externalStream;
const wasmBuffer = fixtures.readSync('test.wasm');
for (const [ value, _method ] of [
[ external, 'isExternal' ],
[ new Date() ],
[ (function() { return arguments; })(), 'isArgumentsObject' ],
[ new Boolean(), 'isBooleanObject' ],
[ new Number(), 'isNumberObject' ],
[ new String(), 'isStringObject' ],
[ Object(Symbol()), 'isSymbolObject' ],
[ new Error(), 'isNativeError' ],
[ new RegExp() ],
[ async function() {}, 'isAsyncFunction' ],
[ function*() {}, 'isGeneratorFunction' ],
[ (function*() {})(), 'isGeneratorObject' ],
[ Promise.resolve() ],
[ new Map() ],
[ new Set() ],
[ (new Map())[Symbol.iterator](), 'isMapIterator' ],
[ (new Set())[Symbol.iterator](), 'isSetIterator' ],
[ new WeakMap() ],
[ new WeakSet() ],
[ new ArrayBuffer() ],
[ new Uint8Array() ],
[ new Uint8ClampedArray() ],
[ new Uint16Array() ],
[ new Uint32Array() ],
[ new Int8Array() ],
[ new Int16Array() ],
[ new Int32Array() ],
[ new Float32Array() ],
[ new Float64Array() ],
[ Object.defineProperty(new Uint8Array(),
Symbol.toStringTag,
{ value: 'foo' }) ],
[ new DataView(new ArrayBuffer()) ],
[ new SharedArrayBuffer() ],
[ new Proxy({}, {}), 'isProxy' ],
[ new WebAssembly.Module(wasmBuffer), 'isWebAssemblyCompiledModule' ],
]) {
const method = _method || `is${value.constructor.name}`;
assert(method in types, `Missing ${method} for ${inspect(value)}`);
assert(types[method](value), `Want ${inspect(value)} to match ${method}`);
for (const key of Object.keys(types)) {
if ((types.isArrayBufferView(value) ||
types.isAnyArrayBuffer(value)) && key.includes('Array')) {
continue;
}
assert.strictEqual(types[key](value),
key === method,
`${inspect(value)}: ${key}, ` +
`${method}, ${types[key](value)}`);
}
}
{
assert(!types.isUint8Array({ [Symbol.toStringTag]: 'Uint8Array' }));
assert(types.isUint8Array(vm.runInNewContext('new Uint8Array')));
}
{
const primitive = true;
const arrayBuffer = new ArrayBuffer();
const dataView = new DataView(arrayBuffer);
const int32Array = new Int32Array(arrayBuffer);
const uint8Array = new Uint8Array(arrayBuffer);
const buffer = Buffer.from(arrayBuffer);
const fakeDataView = Object.create(DataView.prototype);
const fakeInt32Array = Object.create(Int32Array.prototype);
const fakeUint8Array = Object.create(Uint8Array.prototype);
const fakeBuffer = Object.create(Buffer.prototype);
const stealthyDataView =
Object.setPrototypeOf(new DataView(arrayBuffer), Uint8Array.prototype);
const stealthyInt32Array =
Object.setPrototypeOf(new Int32Array(arrayBuffer), uint8Array);
const stealthyUint8Array =
Object.setPrototypeOf(new Uint8Array(arrayBuffer), ArrayBuffer.prototype);
const all = [
primitive, arrayBuffer, dataView, int32Array, uint8Array, buffer,
fakeDataView, fakeInt32Array, fakeUint8Array, fakeBuffer,
stealthyDataView, stealthyInt32Array, stealthyUint8Array
];
const expected = {
isArrayBufferView: [
dataView, int32Array, uint8Array, buffer,
stealthyDataView, stealthyInt32Array, stealthyUint8Array
],
isTypedArray: [
int32Array, uint8Array, buffer, stealthyInt32Array, stealthyUint8Array
],
isUint8Array: [
uint8Array, buffer, stealthyUint8Array
]
};
for (const testedFunc of Object.keys(expected)) {
const func = types[testedFunc];
const yup = [];
for (const value of all) {
if (func(value)) {
yup.push(value);
}
}
console.log('Testing', testedFunc);
assert.deepStrictEqual(yup, expected[testedFunc]);
}
}
// Try reading the v8.h header to verify completeness.
let v8_h;
try {
v8_h = fs.readFileSync(path.resolve(
__dirname, '..', '..', 'deps', 'v8', 'include', 'v8.h'), 'utf8');
} catch (e) {
// If loading the header fails, it should fail because we did not find it.
assert.strictEqual(e.code, 'ENOENT');
common.skip('Could not read v8.h');
return;
}
// Exclude a number of checks that make sense on the C++ side but have
// much faster/better JS equivalents, so they should not be exposed.
const exclude = [
'Undefined', 'Null', 'NullOrUndefined', 'True', 'False', 'Name', 'String',
'Symbol', 'Function', 'Array', 'Object', 'Boolean', 'Number', 'Int32',
'Uint32'
];
const start = v8_h.indexOf('Value : public Data');
const end = v8_h.indexOf('};', start);
const valueDefinition = v8_h.substr(start, end - start);
const re = /bool Is(\w+)\(\)/g;
let match;
while (match = re.exec(valueDefinition)) {
if (exclude.includes(match[1]))
continue;
assert(`is${match[1]}` in types,
`util.types should provide check for Is${match[1]}`);
}
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