Method compareAny

cmp/compare.go:238–301

(step PathStep)

}

func (s *state) compareAny(step PathStep) {
	// Update the path stack.
	s.curPath.push(step)
	defer s.curPath.pop()
	for _, r := range s.reporters {
		r.PushStep(step)
		defer r.PopStep()
	}
	s.recChecker.Check(s.curPath)

	// Cycle-detection for slice elements (see NOTE in compareSlice).
	t := step.Type()
	vx, vy := step.Values()
	if si, ok := step.(SliceIndex); ok && si.isSlice && vx.IsValid() && vy.IsValid() {
		px, py := vx.Addr(), vy.Addr()
		if eq, visited := s.curPtrs.Push(px, py); visited {
			s.report(eq, reportByCycle)
			return
		}
		defer s.curPtrs.Pop(px, py)
	}

	// Rule 1: Check whether an option applies on this node in the value tree.
	if s.tryOptions(t, vx, vy) {
		return
	}

	// Rule 2: Check whether the type has a valid Equal method.
	if s.tryMethod(t, vx, vy) {
		return
	}

	// Rule 3: Compare based on the underlying kind.
	switch t.Kind() {
	case reflect.Bool:
		s.report(vx.Bool() == vy.Bool(), 0)
	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
		s.report(vx.Int() == vy.Int(), 0)
	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
		s.report(vx.Uint() == vy.Uint(), 0)
	case reflect.Float32, reflect.Float64:
		s.report(vx.Float() == vy.Float(), 0)
	case reflect.Complex64, reflect.Complex128:
		s.report(vx.Complex() == vy.Complex(), 0)
	case reflect.String:
		s.report(vx.String() == vy.String(), 0)
	case reflect.Chan, reflect.UnsafePointer:
		s.report(vx.Pointer() == vy.Pointer(), 0)
	case reflect.Func:
		s.report(vx.IsNil() && vy.IsNil(), 0)
	case reflect.Struct:
		s.compareStruct(t, vx, vy)
	case reflect.Slice, reflect.Array:
		s.compareSlice(t, vx, vy)
	case reflect.Map:
		s.compareMap(t, vx, vy)
	case reflect.Ptr:
		s.comparePtr(t, vx, vy)