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call_ref.wast
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call_ref.wast
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(module
(type $ii (func (param i32) (result i32)))
(func $apply (param $f (ref $ii)) (param $x i32) (result i32)
(call_ref (local.get $x) (local.get $f))
)
(func $f (type $ii) (i32.mul (local.get 0) (local.get 0)))
(func $g (type $ii) (i32.sub (i32.const 0) (local.get 0)))
(elem declare func $f $g)
(func (export "run") (param $x i32) (result i32)
(local $rf (ref null $ii))
(local $rg (ref null $ii))
(local.set $rf (ref.func $f))
(local.set $rg (ref.func $g))
(call_ref (call_ref (local.get $x) (local.get $rf)) (local.get $rg))
)
(func (export "null") (result i32)
(call_ref (i32.const 1) (ref.null $ii))
)
;; Recursion
(type $ll (func (param i64) (result i64)))
(type $lll (func (param i64 i64) (result i64)))
(elem declare func $fac)
(global $fac (ref $ll) (ref.func $fac))
(func $fac (export "fac") (type $ll)
(if (result i64) (i64.eqz (local.get 0))
(then (i64.const 1))
(else
(i64.mul
(local.get 0)
(call_ref (i64.sub (local.get 0) (i64.const 1)) (global.get $fac))
)
)
)
)
(elem declare func $fac-acc)
(global $fac-acc (ref $lll) (ref.func $fac-acc))
(func $fac-acc (export "fac-acc") (type $lll)
(if (result i64) (i64.eqz (local.get 0))
(then (local.get 1))
(else
(call_ref
(i64.sub (local.get 0) (i64.const 1))
(i64.mul (local.get 0) (local.get 1))
(global.get $fac-acc)
)
)
)
)
(elem declare func $fib)
(global $fib (ref $ll) (ref.func $fib))
(func $fib (export "fib") (type $ll)
(if (result i64) (i64.le_u (local.get 0) (i64.const 1))
(then (i64.const 1))
(else
(i64.add
(call_ref (i64.sub (local.get 0) (i64.const 2)) (global.get $fib))
(call_ref (i64.sub (local.get 0) (i64.const 1)) (global.get $fib))
)
)
)
)
(elem declare func $even $odd)
(global $even (ref $ll) (ref.func $even))
(global $odd (ref $ll) (ref.func $odd))
(func $even (export "even") (type $ll)
(if (result i64) (i64.eqz (local.get 0))
(then (i64.const 44))
(else (call_ref (i64.sub (local.get 0) (i64.const 1)) (global.get $odd)))
)
)
(func $odd (export "odd") (type $ll)
(if (result i64) (i64.eqz (local.get 0))
(then (i64.const 99))
(else (call_ref (i64.sub (local.get 0) (i64.const 1)) (global.get $even)))
)
)
)
(assert_return (invoke "run" (i32.const 0)) (i32.const 0))
(assert_return (invoke "run" (i32.const 3)) (i32.const -9))
(assert_trap (invoke "null") "null function")
(assert_return (invoke "fac" (i64.const 0)) (i64.const 1))
(assert_return (invoke "fac" (i64.const 1)) (i64.const 1))
(assert_return (invoke "fac" (i64.const 5)) (i64.const 120))
(assert_return (invoke "fac" (i64.const 25)) (i64.const 7034535277573963776))
(assert_return (invoke "fac-acc" (i64.const 0) (i64.const 1)) (i64.const 1))
(assert_return (invoke "fac-acc" (i64.const 1) (i64.const 1)) (i64.const 1))
(assert_return (invoke "fac-acc" (i64.const 5) (i64.const 1)) (i64.const 120))
(assert_return
(invoke "fac-acc" (i64.const 25) (i64.const 1))
(i64.const 7034535277573963776)
)
(assert_return (invoke "fib" (i64.const 0)) (i64.const 1))
(assert_return (invoke "fib" (i64.const 1)) (i64.const 1))
(assert_return (invoke "fib" (i64.const 2)) (i64.const 2))
(assert_return (invoke "fib" (i64.const 5)) (i64.const 8))
(assert_return (invoke "fib" (i64.const 20)) (i64.const 10946))
(assert_return (invoke "even" (i64.const 0)) (i64.const 44))
(assert_return (invoke "even" (i64.const 1)) (i64.const 99))
(assert_return (invoke "even" (i64.const 100)) (i64.const 44))
(assert_return (invoke "even" (i64.const 77)) (i64.const 99))
(assert_return (invoke "odd" (i64.const 0)) (i64.const 99))
(assert_return (invoke "odd" (i64.const 1)) (i64.const 44))
(assert_return (invoke "odd" (i64.const 200)) (i64.const 99))
(assert_return (invoke "odd" (i64.const 77)) (i64.const 44))
(assert_invalid
(module
(func $f (param $r externref)
(call_ref (local.get $r))
)
)
"type mismatch"
)