void topLevel() {}

class Const {
  const Const();
}

class A {
  const A();
  int get hashCode => super.hashCode + 1;
}

class B {
  const B();
  bool operator ==(Object other) => super == other;
}

class C {
  const C();
  int get hashCode => super.hashCode + 1;
  bool operator ==(Object other) => super == other;
}

const a1 = A() == Const();

const a2 = Const() == A();

const a3 = A() != Const();

const a4 = Const() != A();

const a5 = A() == null;

const a6 = null == A();

const a7 = A() != null;

const a8 = null != A();

const b1 = B() == Const();

const b2 = Const() == B();

const b3 = B() != Const();

const b4 = Const() != B();

const b5 = B() == null;

const b6 = null == B();

const b7 = B() != null;

const b8 = null != B();

const c1 = C() == Const();

const c2 = Const() == C();

const c3 = C() != Const();

const c4 = Const() != C();

const c5 = C() == null;

const c6 = null == C();

const c7 = C() != null;

const c8 = null != C();

const d1 = true == Const();

const d2 = Const() == true;

const d3 = true != Const();

const d4 = Const() != true;

const e1 = 0 == Const();

const e2 = Const() == 0;

const e3 = 0 != Const();

const e4 = Const() != 0;

const f1 = '' == Const();

const f2 = Const() == '';

const f3 = '' != Const();

const f4 = Const() != '';

const g1 = #a == Const();

const g2 = Const() == #a;

const g3 = #a != Const();

const g4 = Const() != #a;

const h1 = const Symbol('b') == Const();

const h2 = Const() == const Symbol('b');

const h3 = const Symbol('b') != Const();

const h4 = Const() != const Symbol('b');

const i1 = Object == Const();

const i2 = Const() == Object;

const i3 = Object != Const();

const i4 = Const() != Object;

const j1 = [] == Const();

const j2 = Const() == [];

const j3 = [] != Const();

const j4 = Const() != [];

const k1 = {} == Const();

const k2 = Const() == {};

const k3 = {} != Const();

const k4 = Const() != {};

const l1 = {0} == Const();

const l2 = Const() == {0};

const l3 = {0} != Const();

const l4 = Const() != {0};

const n1 = topLevel == Const();

const n2 = Const() == topLevel;

const n3 = topLevel != Const();

const n4 = Const() != topLevel;

const o1 = 0.5 == Const();

const o2 = Const() == 0.5;

const o3 = 0.5 != Const();

const o4 = Const() != 0.5;

const set1 = {
  null,
  Const(),
  true,
  0,
  '',
  #a,
  const Symbol('b'),
  Object,
  [],
  {},
  {0},
  topLevel,
};

const set2 = {A()};

const set3 = {B()};

const set4 = {C()};

const set5 = {0.5};

const map1 = {
  null: 0,
  Const(): 0,
  true: 0,
  0: 0,
  '': 0,
  #a: 0,
  const Symbol('b'): 0,
  Object: 0,
  []: 0,
  {}: 0,
  {0}: 0,
  topLevel: 0,
};

const map2 = {A(): 0};

const map3 = {B(): 0};

const map4 = {C(): 0};

const map5 = {0.5: 0};