Function getOverloadTypeChecker

pkg/sql/sem/tree/overload.go:785–802

getOverloadTypeChecker initialized an overloadTypeChecker from the pool. The returned object should be returned to the pool via its release method.

(o overloadSet, exprs ...Expr)

// getOverloadTypeChecker initialized an overloadTypeChecker from the pool. The
// returned object should be returned to the pool via its release method.
func getOverloadTypeChecker(o overloadSet, exprs ...Expr) *overloadTypeChecker {
	s := overloadTypeCheckerPool.Get().(*overloadTypeChecker)
	n := o.len()
	if n > cap(s.overloads) {
		s.overloads = make([]overloadImpl, n)
		s.params = make([]TypeList, n)
	} else {
		s.overloads = s.overloads[:n]
		s.params = s.params[:n]
	}
	for i := 0; i < n; i++ {
		got := o.get(i)
		s.overloads[i] = got
		s.params[i] = got.params()
	}
	s.exprs = append(s.exprs, exprs...)
	return s
}

func (s *overloadTypeChecker) release() {
	for i := range s.overloads {