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PR-URL: https://github.com/nodejs/node/pull/44741 Fixes: https://github.com/nodejs/node/issues/44650 Fixes: https://github.com/nodejs/node/issues/37472 Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl> Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com>
48 lines
1.5 KiB
JavaScript
48 lines
1.5 KiB
JavaScript
// Copyright 2022 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --experimental-wasm-gc --wasm-gc-js-interop
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d8.file.execute('test/mjsunit/wasm/wasm-module-builder.js');
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var builder = new WasmModuleBuilder();
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let i16Array = builder.addArray(kWasmI16, true);
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builder.addFunction('getHelloArray', makeSig([], [kWasmArrayRef]))
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.addBody([
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...wasmI32Const(72), ...wasmI32Const(69), ...wasmI32Const(76),
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...wasmI32Const(76), ...wasmI32Const(79),
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kGCPrefix, kExprArrayNewFixed, i16Array, 5
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])
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.exportFunc();
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builder.addFunction('getChar', makeSig([kWasmArrayRef, kWasmI32], [kWasmI32]))
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.addBody([
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kExprLocalGet, 0, kGCPrefix, kExprRefAsData, kGCPrefix,
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kExprRefCast, i16Array, kExprLocalGet, 1, kGCPrefix, kExprArrayGetS,
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i16Array
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])
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.exportFunc();
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const instance = builder.instantiate();
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const getHelloArray = instance.exports.getHelloArray;
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const getChar = instance.exports.getChar;
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assertEquals(
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WebAssembly.experimentalConvertArrayToString(getHelloArray(), 0, 5),
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'HELLO');
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assertEquals(
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WebAssembly.experimentalConvertArrayToString(getHelloArray(), 1, 4),
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'ELLO');
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assertEquals(
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WebAssembly.experimentalConvertArrayToString(getHelloArray(), 0, 3), 'HEL');
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const string = 'foobar'
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const array =
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WebAssembly.experimentalConvertStringToArray('foobar', getHelloArray());
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for (let i = 0; i < string.length; ++i) {
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assertEquals(getChar(array, i), string.charCodeAt(i));
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}
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