ref-eq.js - mozsearch

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// ref.eq is part of the gc feature, not the reftypes feature.

let { exports: { make, ref_eq, ref_eq_for_control } } = wasmEvalText(`(module

    (type $s (struct))

    (func (export "make") (result eqref) struct.new $s)

    (func (export "ref_eq") (param $a eqref) (param $b eqref) (result i32)

        (ref.eq (local.get $a) (local.get $b)))

    (func (export "ref_eq_for_control") (param $a eqref) (param $b eqref) (result f64)

        (if (result f64) (ref.eq (local.get $a) (local.get $b))

            (then (f64.const 5.0))

            (else (f64.const 3.0)))))`);

let a = make();

let b = make();

assertEq(ref_eq(null, null), 1);

assertEq(ref_eq(null, a), 0);

assertEq(ref_eq(b, b), 1);

assertEq(ref_eq_for_control(null, null), 5);

assertEq(ref_eq_for_control(null, a), 3);

assertEq(ref_eq_for_control(b, b), 5);