instanceof

Status: implemented

export default (...a) => a[0] instanceof Array;

x instanceof Array is true when x is an array and false of every other value — null, undefined, every primitive, an object and a function included. It never throws and converts nothing. It is the one instanceof the language has: the right operand must be the word Array, bare or in parentheses, since a group vanishes (a instanceof (Array) is a instanceof Array); any other right operand — Map, an access, a literal, a function — is refused at the operator. Object and Function are not admitted and never will be: typeof x === "object" and typeof x === "function" are the spellings for those. If we add more types, like Set or RegExp, each is one more name on the right, once the language can build one.

instanceof is a relational operator, one level with < <= > >= and left-associative as they are: a instanceof Array === b is (a instanceof Array) === b, a < b instanceof Array is (a < b) instanceof Array, and !a instanceof Array is (!a) instanceof Array — JavaScript's own trap, kept rather than repaired; !(a instanceof Array) is the negation. instanceof is a reserved word, as typeof is: it names no const and no parameter, while { instanceof: 1 } and a.instanceof are a key and a property name as in JavaScript. Array is a reserved word too (numbers), so no scope binds it and the operator always means the global — before and after any const, where JavaScript would read a later const Array as a binding in its temporal dead zone and throw.

The EDAG's node is ['instanceof', exp, 'Array']: the constructor is a name from a closed list, not an operand, since no global is a value there (fjs/edag); nanvm-lib answers it with Any::instanceof_(x, Constructor::Array). The writer spells it with spaces around the word, a instanceof Array.

Examples

The compiler demo offers the programs instanceOf in module.f.js, each with its real output.

The demo on this page runs sample.f.js, this page's example as a function of one number — instanceof Array of an array, and of a number — with every output fjs compile makes of it: the expression graph (EDAG), the Rust and the WebAssembly that Rust builds to. Its Run button calls the default export with 0 and 1, as JavaScript and as WebAssembly, and shows what each call returned or threw.

export default (...a) => [[a[0]], a[0]][Number(a[0])] instanceof Array;

Reference

Demo

In FunctionalScript

fjs compile accepts this module, and it runs as JavaScript and as WebAssembly alike.

A FunctionalScript module and what fjs compile makes of it: the expression graph it lowers to, the Rust it compiles to on the NaNVM runtime, and the WebAssembly that Rust builds to. Run calls its default export with 0, then 1, first as the JavaScript it already is and then as WebAssembly, and shows what each call returned or threw and how long one call takes, timed over 1000 calls.

FunctionalScript source:

/**
 * The example of [`README.md`](./README.md) (`instanceof`) as a function of
 * one number, for the page's WASM demo: `instanceof Array` of an array, and
 * of a number.
 *
 * @module
 */

/** @type {(...a: readonly number[]) => unknown} */
export default (...a) => [[a[0]], a[0]][Number(a[0])] instanceof Array;

Expression graph (EDAG) that fjs compile lowers it to:

=>lengthbody0instanceof Arrayinstanceof Arrayoperand.objidx[]01Numberoperand[]0.objidxrest0.objidxrest0.objidxrest0

The same graph, as fjs compile writes it to a .edag.data.js file:

const $0=["rest"];export default ["{}",[[":","default",["=>",0,[],["instanceof",[".",["[]",[["[]",[[".",$0,0]]],[".",$0,0]]],["Number",[".",$0,0]]],"Array"]]]]];

Rust that fjs compile writes from it, on the NaNVM runtime:

// @generated by `fjs compile`. Do not edit: recompile the source module instead.

use nanvm_lib::vm::unstable::{f64_any, string_key};
use nanvm_lib::vm::{Any, Array, Constructor, IStaticFunction, ToAny, ToArray, ToObject};

#[rustfmt::skip]
#[allow(clippy::if_same_then_else)]
pub fn module<A: IStaticFunction>(_runtime: Any<A>) -> Result<Any<A>, Any<A>> {
    Ok([(string_key("default"), A::static_function(|_self, _args| {
        let _b414: Any<A> = _args.rest(0).to_any();
        Any::instanceof_((Any::dot([[(Any::dot(_b414.clone(), f64_any(0x0000000000000000)).end())?].to_array().to_any(), (Any::dot(_b414.clone(), f64_any(0x0000000000000000)).end())?].to_array().to_any(), (Any::number((Any::dot(_b414.clone(), f64_any(0x0000000000000000)).end())?))?).end())?, Constructor::Array)
    }, 0, Array::default(), Some("(...$0)=>[[$0[0]],$0[0]][Number($0[0])] instanceof Array")).to_any())].to_object().to_any())
}

WebAssembly text (WAT) of the functions compiled from this source, without the NaNVM runtime:

  (func $nanvm_demos::samples::instanceof::module::<nanvm_lib::naive::Naive> (;206;) (type 1) (param i32 i32)
    (local i32 i32 i32 i32 i32)
    global.get $__stack_pointer
    i32.const 96
    i32.sub
    local.tee 2
    global.set $__stack_pointer
    local.get 2
    i32.const 0
    i32.store16 offset=28
    local.get 2
    i32.const 1056411
    i32.store offset=24
    local.get 2
    i32.const 1056404
    i32.store offset=20
    local.get 2
    i32.const 48
    i32.add
    local.get 2
    i32.const 20
    i32.add
    call $"core::iter::adapters::try_process::<core::iter::adapters::map::Map<core::str::iter::EncodeUtf16, core::result::Result<u16, nanvm_lib::vm::any::Any<nanvm_lib::naive::Naive>>::Ok>, u16, core::result::Result<core::convert::Infallible, nanvm_lib::vm::any::Any<nanvm_lib::naive::Naive>>, <core::result::Result<alloc::rc::Rc<[u16]>, nanvm_lib::vm::any::Any<nanvm_lib::naive::Naive>> as core::iter::traits::collect::FromIterator<core::result::Result<u16, nanvm_lib::vm::any::Any<nanvm_lib::naive::Naive>>>>::from_iter<core::iter::adapters::map::Map<core::str::iter::EncodeUtf16, core::result::Result<u16, nanvm_lib::vm::any::Any<nanvm_lib::naive::Naive>>::Ok>>::{closure#0}, alloc::rc::Rc<[u16]>>"
    block ;; label = @1
      block ;; label = @2
        block ;; label = @3
          local.get 2
          i32.load8_u offset=48
          local.tee 3
          i32.const 255
          i32.ne
          br_if 0 (;@3;)
          local.get 2
          i32.load offset=56
          local.set 4
          local.get 2
          i32.load offset=52
          local.set 5
          local.get 2
          i32.const 0
          i32.store8 offset=32
          local.get 2
          i32.const 8
          i32.add
          local.get 2
          i32.const 32
          i32.add
          call $"<core::iter::adapters::GenericShunt<core::iter::adapters::map::Map<core::iter::sources::empty::Empty<nanvm_lib::vm::any::Any<nanvm_lib::naive::Naive>>, core::result::Result<nanvm_lib::vm::any::Any<nanvm_lib::naive::Naive>, ()>::Ok>, core::result::Result<core::convert::Infallible, ()>> as alloc::rc::ToRcSlice<nanvm_lib::vm::any::Any<nanvm_lib::naive::Naive>>>::to_rc_slice"
          local.get 2
          local.get 2
          i32.load offset=12
          local.tee 6
          i32.store offset=52
          local.get 2
          local.get 2
          i32.load offset=8
          local.tee 3
          i32.store offset=48
          block ;; label = @4
            local.get 2
            i32.load8_u offset=32
            i32.const 1
            i32.ne
            br_if 0 (;@4;)
            local.get 3
            local.get 3
            i32.load
            i32.const -1
            i32.add
            local.tee 0
            i32.store
            local.get 0
            br_if 3 (;@1;)
            local.get 2
            i32.const 48
            i32.add
            call $"<alloc::rc::Rc<[nanvm_lib::vm::any::Any<nanvm_lib::naive::Naive>]>>::drop_slow"
            br 3 (;@1;)
          end
          local.get 3
          i32.eqz
          br_if 2 (;@1;)
          i32.const 31
          i32.const 0
          local.get 3
          local.get 6
          i32.const 1056411
          i32.const 56
          call $<nanvm_lib::naive::function::Function>::new
          local.set 3
          local.get 2
          i32.const 0
          i32.store8 offset=20
          local.get 2
          local.get 3
          i32.store offset=68
          local.get 2
          i32.const 7
          i32.store8 offset=64
          local.get 2
          local.get 4
          i32.store offset=60
          local.get 2
          local.get 5
          i32.store offset=56
          local.get 2
          i64.const 4294967296
          i64.store offset=48
          local.get 2
          local.get 2
          i32.const 20
          i32.add
          i32.store offset=80
          local.get 2
          local.get 2
          i32.const 48
          i32.add
          call $"<core::iter::adapters::GenericShunt<core::iter::adapters::map::Map<core::array::iter::IntoIter<(nanvm_lib::vm::string::String<nanvm_lib::naive::Naive>, nanvm_lib::vm::any::Any<nanvm_lib::naive::Naive>), 1>, core::result::Result<(nanvm_lib::vm::string::String<nanvm_lib::naive::Naive>, nanvm_lib::vm::any::Any<nanvm_lib::naive::Naive>), ()>::Ok>, core::result::Result<core::convert::Infallible, ()>> as alloc::rc::ToRcSlice<(nanvm_lib::vm::string::String<nanvm_lib::naive::Naive>, nanvm_lib::vm::any::Any<nanvm_lib::naive::Naive>)>>::to_rc_slice"
          local.get 2
          local.get 2
          i32.load offset=4
          local.tee 4
          i32.store offset=36
          local.get 2
          local.get 2
          i32.load
          local.tee 3
          i32.store offset=32
          block ;; label = @4
            local.get 2
            i32.load8_u offset=20
            i32.const 1
            i32.ne
            br_if 0 (;@4;)
            local.get 3
            local.get 3
            i32.load
            i32.const -1
            i32.add
            local.tee 0
            i32.store
            local.get 0
            br_if 2 (;@2;)
            local.get 2
            i32.const 32
            i32.add
            call $"<alloc::rc::Rc<[(nanvm_lib::vm::string::String<nanvm_lib::naive::Naive>, nanvm_lib::vm::any::Any<nanvm_lib::naive::Naive>)]>>::drop_slow"
            br 2 (;@2;)
          end
          local.get 3
          i32.eqz
          br_if 1 (;@2;)
          local.get 0
          local.get 4
          i32.store offset=16
          local.get 0
          local.get 3
          i32.store offset=12
          local.get 0
          i32.const 5
          i32.store8 offset=8
          local.get 0
          i64.const 0
          i64.store
          local.get 1
          call $"#func201 core::ptr::drop_glue::<nanvm_lib::vm::unpacked::Unpacked<nanvm_lib::naive::Naive>>"
          local.get 2
          i32.const 96
          i32.add
          global.set $__stack_pointer
          return
        end
        local.get 2
        local.get 2
        i32.load8_u offset=51
        i32.store8 offset=35
        local.get 2
        local.get 2
        i32.load16_u offset=49 align=1
        i32.store16 offset=33 align=1
        local.get 2
        local.get 2
        i32.load offset=60
        i32.store offset=44
        local.get 2
        local.get 2
        i64.load offset=52 align=4
        i64.store offset=36 align=4
        local.get 2
        local.get 3
        i32.store8 offset=32
        i32.const 1065572
        i32.const 43
        local.get 2
        i32.const 32
        i32.add
        i32.const 1065556
        i32.const 1065616
        call $core::result::unwrap_failed
        unreachable
      end
      i32.const 1057428
      i32.const 43
      local.get 2
      i32.const 95
      i32.add
      i32.const 1057412
      i32.const 1057472
      call $core::result::unwrap_failed
      unreachable
    end
    i32.const 1057428
    i32.const 43
    local.get 2
    i32.const 95
    i32.add
    i32.const 1057412
    i32.const 1057472
    call $core::result::unwrap_failed
    unreachable
  )
  (func $"<nanvm_demos::samples::instanceof::module<nanvm_lib::naive::Naive>::{closure#0} as core::ops::function::FnOnce<(&nanvm_lib::naive::function::Function, nanvm_lib::vm::array::Array<nanvm_lib::naive::Naive>)>>::call_once" (;207;) (type 4) (param i32 i32 i32 i32)
    (local i32 i32 i32 i64 f64)
    global.get $__stack_pointer
    i32.const 288
    i32.sub
    local.tee 4
    global.set $__stack_pointer
    local.get 4
    local.get 3
    i32.store offset=20
    local.get 4
    local.get 2
    i32.store offset=16
    local.get 2
    local.get 2
    i32.load
    local.tee 5
    i32.const 1
    i32.add
    local.tee 6
    i32.store
    block ;; label = @1
      block ;; label = @2
        local.get 6
        i32.eqz
        br_if 0 (;@2;)
        local.get 4
        local.get 3
        i32.store offset=32
        local.get 4
        local.get 2
        i32.store offset=28
        local.get 4
        i32.const 6
        i32.store8 offset=24
        local.get 2
        local.get 5
        i32.const 2
        i32.add
        local.tee 6
        i32.store
        local.get 6
        i32.eqz
        br_if 0 (;@2;)
        local.get 4
        local.get 2
        i32.store offset=188
        local.get 4
        i32.const 6
        i32.store8 offset=184
        local.get 4
        local.get 3
        i64.extend_i32_u
        i64.store offset=192
        local.get 4
        i64.const 0
        i64.store offset=224
        local.get 4
        i32.const 2
        i32.store8 offset=216
        local.get 4
        i32.const 88
        i32.add
        local.get 4
        i32.const 184
        i32.add
        local.get 4
        i32.const 216
        i32.add
        call $<nanvm_lib::vm::lambda::member::Member<nanvm_lib::naive::Naive>>::new
        block ;; label = @3
          block ;; label = @4
            block ;; label = @5
              block ;; label = @6
                block ;; label = @7
                  local.get 4
                  i32.load8_u offset=88
                  i32.const 255
                  i32.ne
                  br_if 0 (;@7;)
                  local.get 0
                  local.get 4
                  i64.load offset=104
                  i64.store offset=16
                  local.get 0
                  local.get 4
                  i64.load offset=96
                  i64.store offset=8
                  local.get 0
                  i64.const 1
                  i64.store
                  br 1 (;@6;)
                end
                local.get 4
                local.get 4
                i64.load offset=112
                i64.store offset=240
                local.get 4
                local.get 4
                i64.load offset=104
                i64.store offset=232
                local.get 4
                local.get 4
                i64.load offset=96
                i64.store offset=224
                local.get 4
                local.get 4
                i64.load offset=88
                i64.store offset=216
                local.get 4
                i32.const 184
                i32.add
                local.get 4
                i32.const 216
                i32.add
                call $<nanvm_lib::vm::lambda::member::Member<nanvm_lib::naive::Naive>>::own
                i32.const 1
                local.set 3
                i32.const 0
                local.set 6
                block ;; label = @7
                  local.get 4
                  i32.load8_u offset=184
                  local.tee 5
                  i32.const 255
                  i32.eq
                  br_if 0 (;@7;)
                  local.get 4
                  local.get 4
                  i64.load offset=186 align=2
                  i64.store offset=120
                  local.get 4
                  local.get 4
                  i64.load offset=192 align=2
                  i64.store offset=126 align=2
                  local.get 4
                  i32.load8_u offset=185
                  local.set 3
                  local.get 5
                  local.set 6
                end
                local.get 4
                i32.const 216
                i32.add
                call $"#func562 core::ptr::drop_glue::<nanvm_lib::vm::unpacked::Unpacked<nanvm_lib::naive::Naive>>"
                local.get 4
                i32.const 232
                i32.add
                call $"#func562 core::ptr::drop_glue::<nanvm_lib::vm::unpacked::Unpacked<nanvm_lib::naive::Naive>>"
                local.get 4
                i32.const 0
                i32.store8 offset=56
                local.get 4
                local.get 3
                i32.store8 offset=225
                local.get 4
                local.get 6
                i32.store8 offset=224
                local.get 4
                i64.const 4294967296
                i64.store offset=216
                local.get 4
                local.get 4
                i64.load offset=120
                i64.store offset=226 align=2
                local.get 4
                local.get 4
                i64.load offset=126 align=2
                i64.store offset=232 align=2
                local.get 4
                local.get 4
                i32.const 56
                i32.add
                i32.store offset=240
                local.get 4
                i32.const 8
                i32.add
                local.get 4
                i32.const 216
                i32.add
                call $"<core::iter::adapters::GenericShunt<core::iter::adapters::map::Map<core::array::iter::IntoIter<nanvm_lib::vm::any::Any<nanvm_lib::naive::Naive>, 1>, core::result::Result<nanvm_lib::vm::any::Any<nanvm_lib::naive::Naive>, ()>::Ok>, core::result::Result<core::convert::Infallible, ()>> as alloc::rc::ToRcSlice<nanvm_lib::vm::any::Any<nanvm_lib::naive::Naive>>>::to_rc_slice"
                local.get 4
                local.get 4
                i32.load offset=12
                local.tee 6
                i32.store offset=188
                local.get 4
                local.get 4
                i32.load offset=8
                local.tee 3
                i32.store offset=184
                block ;; label = @7
                  local.get 4
                  i32.load8_u offset=56
                  i32.const 1
                  i32.ne
                  br_if 0 (;@7;)
                  local.get 3
                  local.get 3
                  i32.load
                  i32.const -1
                  i32.add
                  local.tee 2
                  i32.store
                  local.get 2
                  br_if 6 (;@1;)
                  local.get 4
                  i32.const 184
                  i32.add
                  call $"<alloc::rc::Rc<[nanvm_lib::vm::any::Any<nanvm_lib::naive::Naive>]>>::drop_slow"
                  br 6 (;@1;)
                end
                local.get 3
                i32.eqz
                br_if 5 (;@1;)
                local.get 4
                local.get 6
                i32.store offset=160
                local.get 4
                local.get 3
                i32.store offset=156
                local.get 4
                i32.const 6
                i32.store8 offset=152
                block ;; label = @7
                  block ;; label = @8
                    block ;; label = @9
                      block ;; label = @10
                        block ;; label = @11
                          block ;; label = @12
                            block ;; label = @13
                              block ;; label = @14
                                block ;; label = @15
                                  block ;; label = @16
                                    local.get 4
                                    i32.load8_u offset=24
                                    local.tee 6
                                    br_table 6 (;@10;) 6 (;@10;) 0 (;@16;) 1 (;@15;) 2 (;@14;) 3 (;@13;) 4 (;@12;) 5 (;@11;) 6 (;@10;)
                                  end
                                  local.get 4
                                  i64.load offset=32
                                  local.set 7
                                  br 8 (;@7;)
                                end
                                local.get 4
                                i32.load offset=28
                                local.tee 3
                                local.get 3
                                i32.load
                                i32.const 1
                                i32.add
                                local.tee 5
                                i32.store
                                local.get 5
                                i32.eqz
                                br_if 12 (;@2;)
                                br 6 (;@8;)
                              end
                              local.get 4
                              i32.load offset=28
                              local.tee 3
                              local.get 3
                              i32.load
                              i32.const 1
                              i32.add
                              local.tee 5
                              i32.store
                              local.get 5
                              i32.eqz
                              br_if 11 (;@2;)
                              local.get 4
                              i64.load8_u offset=36
                              i64.const 32
                              i64.shl
                              local.get 4
                              i64.load32_u offset=32
                              i64.or
                              local.set 7
                              br 6 (;@7;)
                            end
                            local.get 4
                            i32.load offset=28
                            local.tee 3
                            local.get 3
                            i32.load
                            i32.const 1
                            i32.add
                            local.tee 5
                            i32.store
                            local.get 5
                            br_if 4 (;@8;)
                            br 10 (;@2;)
                          end
                          local.get 4
                          i32.load offset=28
                          local.tee 3
                          local.get 3
                          i32.load
                          i32.const 1
                          i32.add
                          local.tee 5
                          i32.store
                          local.get 5
                          br_if 3 (;@8;)
                          br 9 (;@2;)
                        end
                        local.get 4
                        i32.load offset=28
                        local.tee 3
                        local.get 3
                        i32.load
                        i32.const 1
                        i32.add
                        local.tee 5
                        i32.store
                        local.get 5
                        i32.eqz
                        br_if 8 (;@2;)
                        br 1 (;@9;)
                      end
                      local.get 4
                      i32.load8_u offset=25
                      local.set 5
                    end
                    br 1 (;@7;)
                  end
                  local.get 4
                  i64.load32_u offset=32
                  local.set 7
                end
                local.get 4
                local.get 7
                i64.store offset=192
                local.get 4
                local.get 3
                i32.store offset=188
                local.get 4
                local.get 5
                i32.store8 offset=185
                local.get 4
                local.get 6
                i32.store8 offset=184
                local.get 4
                i64.const 0
                i64.store offset=224
                local.get 4
                i32.const 2
                i32.store8 offset=216
                local.get 4
                i32.const 120
                i32.add
                local.get 4
                i32.const 184
                i32.add
                local.get 4
                i32.const 216
                i32.add
                call $<nanvm_lib::vm::lambda::member::Member<nanvm_lib::naive::Naive>>::new
                block ;; label = @7
                  local.get 4
                  i32.load8_u offset=120
                  i32.const 255
                  i32.ne
                  br_if 0 (;@7;)
                  local.get 0
                  local.get 4
                  i64.load offset=136
                  i64.store offset=16
                  local.get 0
                  local.get 4
                  i64.load offset=128
                  i64.store offset=8
                  local.get 0
                  i64.const 1
                  i64.store
                  local.get 4
                  i32.const 152
                  i32.add
                  call $"#func201 core::ptr::drop_glue::<nanvm_lib::vm::unpacked::Unpacked<nanvm_lib::naive::Naive>>"
                  br 1 (;@6;)
                end
                local.get 4
                local.get 4
                i64.load offset=144
                i64.store offset=240
                local.get 4
                local.get 4
                i64.load offset=136
                i64.store offset=232
                local.get 4
                local.get 4
                i64.load offset=128
                i64.store offset=224
                local.get 4
                local.get 4
                i64.load offset=120
                i64.store offset=216
                local.get 4
                i32.const 184
                i32.add
                local.get 4
                i32.const 216
                i32.add
                call $<nanvm_lib::vm::lambda::member::Member<nanvm_lib::naive::Naive>>::own
                i32.const 1
                local.set 3
                i32.const 0
                local.set 6
                block ;; label = @7
                  local.get 4
                  i32.load8_u offset=184
                  local.tee 5
                  i32.const 255
                  i32.eq
                  br_if 0 (;@7;)
                  local.get 4
                  local.get 4
                  i64.load offset=186 align=2
                  i64.store offset=72
                  local.get 4
                  local.get 4
                  i64.load offset=192 align=2
                  i64.store offset=78 align=2
                  local.get 4
                  i32.load8_u offset=185
                  local.set 3
                  local.get 5
                  local.set 6
                end
                local.get 4
                i32.const 216
                i32.add
                call $"#func562 core::ptr::drop_glue::<nanvm_lib::vm::unpacked::Unpacked<nanvm_lib::naive::Naive>>"
                local.get 4
                i32.const 232
                i32.add
                call $"#func562 core::ptr::drop_glue::<nanvm_lib::vm::unpacked::Unpacked<nanvm_lib::naive::Naive>>"
                local.get 4
                local.get 4
                i64.load offset=160
                i64.store offset=232
                local.get 4
                local.get 4
                i64.load offset=152
                i64.store offset=224
                local.get 4
                i32.const 0
                i32.store8 offset=152
                local.get 4
                local.get 3
                i32.store8 offset=241
                local.get 4
                local.get 6
                i32.store8 offset=240
                local.get 4
                i64.const 8589934592
                i64.store offset=216
                local.get 4
                local.get 4
                i64.load offset=72
                i64.store offset=242 align=2
                local.get 4
                local.get 4
                i64.load offset=78 align=2
                i64.store offset=248 align=2
                local.get 4
                local.get 4
                i32.const 152
                i32.add
                i32.store offset=256
                local.get 4
                local.get 4
                i32.const 216
                i32.add
                call $"<core::iter::adapters::GenericShunt<core::iter::adapters::map::Map<core::array::iter::IntoIter<nanvm_lib::vm::any::Any<nanvm_lib::naive::Naive>, 2>, core::result::Result<nanvm_lib::vm::any::Any<nanvm_lib::naive::Naive>, ()>::Ok>, core::result::Result<core::convert::Infallible, ()>> as alloc::rc::ToRcSlice<nanvm_lib::vm::any::Any<nanvm_lib::naive::Naive>>>::to_rc_slice"
                local.get 4
                local.get 4
                i32.load offset=4
                local.tee 6
                i32.store offset=188
                local.get 4
                local.get 4
                i32.load
                local.tee 3
                i32.store offset=184
                block ;; label = @7
                  local.get 4
                  i32.load8_u offset=152
                  i32.const 1
                  i32.ne
                  br_if 0 (;@7;)
                  local.get 3
                  local.get 3
                  i32.load
                  i32.const -1
                  i32.add
                  local.tee 2
                  i32.store
                  local.get 2
                  br_if 4 (;@3;)
                  local.get 4
                  i32.const 184
                  i32.add
                  call $"<alloc::rc::Rc<[nanvm_lib::vm::any::Any<nanvm_lib::naive::Naive>]>>::drop_slow"
                  br 4 (;@3;)
                end
                local.get 3
                i32.eqz
                br_if 3 (;@3;)
                local.get 4
                local.get 6
                i32.store offset=272
                local.get 4
                local.get 3
                i32.store offset=268
                local.get 4
                i32.const 6
                i32.store8 offset=264
                block ;; label = @7
                  block ;; label = @8
                    block ;; label = @9
                      block ;; label = @10
                        block ;; label = @11
                          block ;; label = @12
                            block ;; label = @13
                              block ;; label = @14
                                block ;; label = @15
                                  block ;; label = @16
                                    local.get 4
                                    i32.load8_u offset=24
                                    local.tee 6
                                    br_table 6 (;@10;) 6 (;@10;) 0 (;@16;) 1 (;@15;) 2 (;@14;) 3 (;@13;) 4 (;@12;) 5 (;@11;) 6 (;@10;)
                                  end
                                  local.get 4
                                  i64.load offset=32
                                  local.set 7
                                  br 8 (;@7;)
                                end
                                local.get 4
                                i32.load offset=28
                                local.tee 3
                                local.get 3
                                i32.load
                                i32.const 1
                                i32.add
                                local.tee 5
                                i32.store
                                local.get 5
                                i32.eqz
                                br_if 12 (;@2;)
                                br 6 (;@8;)
                              end
                              local.get 4
                              i32.load offset=28
                              local.tee 3
                              local.get 3
                              i32.load
                              i32.const 1
                              i32.add
                              local.tee 5
                              i32.store
                              local.get 5
                              i32.eqz
                              br_if 11 (;@2;)
                              local.get 4
                              i64.load8_u offset=36
                              i64.const 32
                              i64.shl
                              local.get 4
                              i64.load32_u offset=32
                              i64.or
                              local.set 7
                              br 6 (;@7;)
                            end
                            local.get 4
                            i32.load offset=28
                            local.tee 3
                            local.get 3
                            i32.load
                            i32.const 1
                            i32.add
                            local.tee 5
                            i32.store
                            local.get 5
                            i32.eqz
                            br_if 10 (;@2;)
                            br 4 (;@8;)
                          end
                          local.get 4
                          i32.load offset=28
                          local.tee 3
                          local.get 3
                          i32.load
                          i32.const 1
                          i32.add
                          local.tee 5
                          i32.store
                          local.get 5
                          i32.eqz
                          br_if 9 (;@2;)
                          br 3 (;@8;)
                        end
                        local.get 4
                        i32.load offset=28
                        local.tee 3
                        local.get 3
                        i32.load
                        i32.const 1
                        i32.add
                        local.tee 5
                        i32.store
                        local.get 5
                        i32.eqz
                        br_if 8 (;@2;)
                        br 1 (;@9;)
                      end
                      local.get 4
                      i32.load8_u offset=25
                      local.set 5
                    end
                    br 1 (;@7;)
                  end
                  local.get 4
                  i64.load32_u offset=32
                  local.set 7
                end
                local.get 4
                local.get 7
                i64.store offset=192
                local.get 4
                local.get 3
                i32.store offset=188
                local.get 4
                local.get 5
                i32.store8 offset=185
                local.get 4
                local.get 6
                i32.store8 offset=184
                local.get 4
                i64.const 0
                i64.store offset=224
                local.get 4
                i32.const 2
                i32.store8 offset=216
                local.get 4
                i32.const 152
                i32.add
                local.get 4
                i32.const 184
                i32.add
                local.get 4
                i32.const 216
                i32.add
                call $<nanvm_lib::vm::lambda::member::Member<nanvm_lib::naive::Naive>>::new
                block ;; label = @7
                  local.get 4
                  i32.load8_u offset=152
                  i32.const 255
                  i32.ne
                  br_if 0 (;@7;)
                  local.get 0
                  local.get 4
                  i64.load offset=168
                  i64.store offset=16
                  local.get 0
                  local.get 4
                  i64.load offset=160
                  i64.store offset=8
                  local.get 0
                  i64.const 1
                  i64.store
                  local.get 4
                  i32.const 264
                  i32.add
                  call $"#func201 core::ptr::drop_glue::<nanvm_lib::vm::unpacked::Unpacked<nanvm_lib::naive::Naive>>"
                  br 1 (;@6;)
                end
                local.get 4
                local.get 4
                i64.load offset=176
                i64.store offset=240
                local.get 4
                local.get 4
                i64.load offset=168
                i64.store offset=232
                local.get 4
                local.get 4
                i64.load offset=160
                i64.store offset=224
                local.get 4
                local.get 4
                i64.load offset=152
                i64.store offset=216
                local.get 4
                i32.const 184
                i32.add
                local.get 4
                i32.const 216
                i32.add
                call $<nanvm_lib::vm::lambda::member::Member<nanvm_lib::naive::Naive>>::own
                block ;; label = @7
                  block ;; label = @8
                    local.get 4
                    i32.load8_u offset=184
                    i32.const 255
                    i32.eq
                    br_if 0 (;@8;)
                    local.get 4
                    local.get 4
                    i64.load offset=192
                    i64.store offset=48
                    local.get 4
                    local.get 4
                    i64.load offset=184
                    i64.store offset=40
                    br 1 (;@7;)
                  end
                  local.get 4
                  i32.const 256
                  i32.store16 offset=40
                end
                local.get 4
                i32.const 216
                i32.add
                call $"#func562 core::ptr::drop_glue::<nanvm_lib::vm::unpacked::Unpacked<nanvm_lib::naive::Naive>>"
                local.get 4
                i32.const 232
                i32.add
                call $"#func562 core::ptr::drop_glue::<nanvm_lib::vm::unpacked::Unpacked<nanvm_lib::naive::Naive>>"
                local.get 4
                i32.const 216
                i32.add
                local.get 4
                i32.const 40
                i32.add
                call $<nanvm_lib::vm::any::Any<nanvm_lib::naive::Naive>>::to_numeric
                local.get 4
                f64.load offset=232
                local.set 8
                local.get 4
                i32.load offset=228
                local.set 3
                local.get 4
                i32.load offset=224
                local.set 6
                block ;; label = @7
                  local.get 4
                  i32.load offset=216
                  br_if 0 (;@7;)
                  block ;; label = @8
                    local.get 6
                    i32.const 1
                    i32.ne
                    br_if 0 (;@8;)
                    local.get 4
                    local.get 8
                    f64.store offset=220 align=4
                    local.get 4
                    local.get 3
                    i32.store offset=216
                    local.get 4
                    i32.const 216
                    i32.add
                    call $<nanvm_lib::vm::bigint::BigInt<nanvm_lib::naive::Naive>>::to_number
                    local.set 8
                    local.get 3
                    local.get 3
                    i32.load
                    i32.const -1
                    i32.add
                    local.tee 6
                    i32.store
                    local.get 6
                    br_if 0 (;@8;)
                    local.get 4
                    i32.const 216
                    i32.add
                    call $"<alloc::rc::Rc<[u64]>>::drop_slow"
                  end
                  local.get 4
                  local.get 8
                  f64.store offset=64
                  local.get 4
                  i32.const 2
                  i32.store offset=56
                  local.get 4
                  i32.const 184
                  i32.add
                  local.get 4
                  i32.const 264
                  i32.add
                  local.get 4
                  i32.const 56
                  i32.add
                  call $<nanvm_lib::vm::lambda::member::Member<nanvm_lib::naive::Naive>>::new
                  block ;; label = @8
                    local.get 4
                    i32.load8_u offset=184
                    i32.const 255
                    i32.ne
                    br_if 0 (;@8;)
                    local.get 0
                    local.get 4
                    i64.load offset=200
                    i64.store offset=16
                    local.get 0
                    local.get 4
                    i64.load offset=192
                    i64.store offset=8
                    local.get 0
                    i64.const 1
                    i64.store
                    br 2 (;@6;)
                  end
                  local.get 4
                  local.get 4
                  i64.load offset=208
                  i64.store offset=240
                  local.get 4
                  local.get 4
                  i64.load offset=200
                  i64.store offset=232
                  local.get 4
                  local.get 4
                  i64.load offset=192
                  i64.store offset=224
                  local.get 4
                  local.get 4
                  i64.load offset=184
                  i64.store offset=216
                  local.get 4
                  i32.const 264
                  i32.add
                  local.get 4
                  i32.const 216
                  i32.add
                  call $<nanvm_lib::vm::lambda::member::Member<nanvm_lib::naive::Naive>>::own
                  block ;; label = @8
                    block ;; label = @9
                      local.get 4
                      i32.load8_u offset=264
                      i32.const 255
                      i32.eq
                      br_if 0 (;@9;)
                      local.get 4
                      local.get 4
                      i64.load offset=272
                      i64.store offset=80
                      local.get 4
                      local.get 4
                      i64.load offset=264
                      i64.store offset=72
                      br 1 (;@8;)
                    end
                    local.get 4
                    i32.const 256
                    i32.store16 offset=72
                  end
                  local.get 4
                  i32.const 216
                  i32.add
                  call $"#func562 core::ptr::drop_glue::<nanvm_lib::vm::unpacked::Unpacked<nanvm_lib::naive::Naive>>"
                  local.get 4
                  i32.const 232
                  i32.add
                  call $"#func562 core::ptr::drop_glue::<nanvm_lib::vm::unpacked::Unpacked<nanvm_lib::naive::Naive>>"
                  local.get 0
                  local.get 4
                  i32.const 72
                  i32.add
                  call $<nanvm_lib::vm::unpacked::Unpacked<nanvm_lib::naive::Naive>>::dispatch::<nanvm_lib::vm::any::instanceof_::InstanceOfArray>
                  i32.store8 offset=9
                  local.get 0
                  i32.const 1
                  i32.store8 offset=8
                  local.get 0
                  i64.const 0
                  i64.store
                  local.get 4
                  i32.const 24
                  i32.add
                  call $"#func201 core::ptr::drop_glue::<nanvm_lib::vm::unpacked::Unpacked<nanvm_lib::naive::Naive>>"
                  local.get 2
                  local.get 2
                  i32.load
                  i32.const -1
                  i32.add
                  local.tee 0
                  i32.store
                  local.get 0
                  br_if 3 (;@4;)
                  br 2 (;@5;)
                end
                local.get 0
                local.get 8
                f64.store offset=16
                local.get 0
                local.get 3
                i32.store offset=12
                local.get 0
                local.get 6
                i32.store offset=8
                local.get 0
                i64.const 1
                i64.store
                local.get 4
                i32.const 264
                i32.add
                call $"#func201 core::ptr::drop_glue::<nanvm_lib::vm::unpacked::Unpacked<nanvm_lib::naive::Naive>>"
              end
              local.get 4
              i32.const 24
              i32.add
              call $"#func201 core::ptr::drop_glue::<nanvm_lib::vm::unpacked::Unpacked<nanvm_lib::naive::Naive>>"
              local.get 2
              local.get 2
              i32.load
              i32.const -1
              i32.add
              local.tee 0
              i32.store
              local.get 0
              br_if 1 (;@4;)
            end
            local.get 4
            i32.const 16
            i32.add
            call $"<alloc::rc::Rc<[nanvm_lib::vm::any::Any<nanvm_lib::naive::Naive>]>>::drop_slow"
          end
          local.get 4
          i32.const 288
          i32.add
          global.set $__stack_pointer
          return
        end
        i32.const 1057428
        i32.const 43
        local.get 4
        i32.const 287
        i32.add
        i32.const 1057412
        i32.const 1057472
        call $core::result::unwrap_failed
        unreachable
      end
      unreachable
    end
    i32.const 1057428
    i32.const 43
    local.get 4
    i32.const 287
    i32.add
    i32.const 1057412
    i32.const 1057472
    call $core::result::unwrap_failed
    unreachable
  )

Emergent Testing

Idle. Press Run to start the suite.

  • ./other-classes/proof.f.mjs
  • ./proof.f.mjs