150 lines
4.1 KiB
JavaScript
150 lines
4.1 KiB
JavaScript
// META: global=window,dedicatedworker,jsshell
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// META: script=/wasm/jsapi/wasm-module-builder.js
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// META: script=/wasm/jsapi/assertions.js
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const type_if_fi = makeSig([kWasmF64, kWasmI32], [kWasmI32, kWasmF64]);
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promise_test(async () => {
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const builder = new WasmModuleBuilder();
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builder
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.addFunction("swap", type_if_fi)
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.addBody([
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kExprLocalGet, 1,
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kExprLocalGet, 0,
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kExprReturn,
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])
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.exportFunc();
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const buffer = builder.toBuffer();
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const result = await WebAssembly.instantiate(buffer);
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const swapped = result.instance.exports.swap(4.2, 7);
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assert_true(Array.isArray(swapped));
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assert_equals(Object.getPrototypeOf(swapped), Array.prototype);
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assert_array_equals(swapped, [7, 4.2]);
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}, "multiple return values from wasm to js");
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promise_test(async () => {
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const builder = new WasmModuleBuilder();
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const swap = builder
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.addFunction("swap", type_if_fi)
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.addBody([
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kExprLocalGet, 1,
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kExprLocalGet, 0,
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kExprReturn,
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]);
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builder
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.addFunction("callswap", kSig_i_v)
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.addBody([
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...wasmF64Const(4.2),
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...wasmI32Const(7),
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kExprCallFunction, swap.index,
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kExprDrop,
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kExprReturn,
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])
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.exportFunc();
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const buffer = builder.toBuffer();
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const result = await WebAssembly.instantiate(buffer);
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const swapped = result.instance.exports.callswap();
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assert_equals(swapped, 7);
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}, "multiple return values inside wasm");
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promise_test(async () => {
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const builder = new WasmModuleBuilder();
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const fnIndex = builder.addImport("module", "fn", type_if_fi);
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builder
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.addFunction("callfn", kSig_i_v)
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.addBody([
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...wasmF64Const(4.2),
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...wasmI32Const(7),
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kExprCallFunction, fnIndex,
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kExprDrop,
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kExprReturn,
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])
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.exportFunc();
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const buffer = builder.toBuffer();
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const actual = [];
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const imports = {
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"module": {
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fn(f32, i32) {
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assert_equals(f32, 4.2);
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assert_equals(i32, 7);
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const result = [2, 7.3];
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let i = 0;
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return {
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get [Symbol.iterator]() {
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actual.push("@@iterator getter");
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return function iterator() {
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actual.push("@@iterator call");
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return {
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get next() {
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actual.push("next getter");
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return function next(...args) {
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assert_array_equals(args, []);
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let j = ++i;
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actual.push(`next call ${j}`);
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if (j > result.length) {
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return {
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get done() {
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actual.push(`done call ${j}`);
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return true;
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}
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};
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}
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return {
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get done() {
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actual.push(`done call ${j}`);
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return false;
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},
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get value() {
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actual.push(`value call ${j}`);
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return {
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get valueOf() {
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actual.push(`valueOf get ${j}`);
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return function() {
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actual.push(`valueOf call ${j}`);
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return result[j - 1];
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};
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}
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};
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}
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};
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};
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}
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};
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}
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},
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};
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},
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}
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};
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const { instance } = await WebAssembly.instantiate(buffer, imports);
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const result = instance.exports.callfn();
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assert_equals(result, 2);
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assert_array_equals(actual, [
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"@@iterator getter",
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"@@iterator call",
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"next getter",
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"next call 1",
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"done call 1",
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"value call 1",
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"next call 2",
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"done call 2",
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"value call 2",
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"next call 3",
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"done call 3",
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"valueOf get 1",
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"valueOf call 1",
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"valueOf get 2",
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"valueOf call 2",
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]);
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}, "multiple return values from js to wasm");
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