call-ref.js - mozsearch

Enable keyboard shortcuts

let counter;

function resetCounter() { counter = 0; }

function boxNextInt() { return {val: counter++}; }

function unboxInt(box) { return box.val; }

function boxNextThreeInts() {

    return [boxNextInt(), boxNextInt(), boxNextInt()];

function unboxThreeInts(x, y, z) {

    return [unboxInt(x), unboxInt(y), unboxInt(z)];

function testAddNextThreeIntsInner(addNextThreeInts) {

    resetCounter();

    for (let n = 0; n < 100000; n += 3) {

        assertEq(addNextThreeInts(), n * 3 + 3);

function testAddNextThreeInts(text, imports) {

    let i = new WebAssembly.Instance(

        new WebAssembly.Module(wasmTextToBinary(text)), { imports });

    testAddNextThreeIntsInner(() => i.exports.addNextThreeInts());

testAddNextThreeInts(`

      (module

        (func $boxNextInt (import "imports" "boxNextInt")

          (result externref))

        (func $unboxInt (import "imports" "unboxInt")

          (param externref) (result i32))

        (func $boxNextThreeInts (result externref externref externref)

          call $boxNextInt

          call $boxNextInt

          call $boxNextInt)

        (func $unboxThreeInts (param externref externref externref) (result i32 i32 i32)

          local.get 0

          call $unboxInt

          local.get 1

          call $unboxInt

          local.get 2

          call $unboxInt)

        (func $addNextThreeInts (export "addNextThreeInts") (result i32)

          call $boxNextThreeInts

          call $unboxThreeInts

          i32.add

          i32.add))`,

                   {boxNextInt, unboxInt});

testAddNextThreeInts(`

      (module

        (func $boxNextThreeInts (import "imports" "boxNextThreeInts")

          (result externref externref externref))

        (func $unboxThreeInts (import "imports" "unboxThreeInts")

          (param externref externref externref) (result i32 i32 i32))

        (func $addNextThreeInts (export "addNextThreeInts") (result i32)

          call $boxNextThreeInts

          call $unboxThreeInts

          i32.add

          i32.add))`,

                   {boxNextThreeInts, unboxThreeInts});

    let i = wasmEvalText(`

      (module

        (func $boxNextThreeInts (import "imports" "boxNextThreeInts")

          (result externref externref externref))

        (func (export "boxNextThreeInts") (result externref externref externref)

          call $boxNextThreeInts))`,

                         {imports: {boxNextThreeInts}});

    testAddNextThreeIntsInner(() => {

        let [a, b, c] = i.exports.boxNextThreeInts();

        return unboxInt(a) + unboxInt(b) + unboxInt(c);

});