Function newBinExprIfValidOverload

pkg/sql/sem/tree/expr.go:1161–1175

newBinExprIfValidOverload constructs a new BinaryExpr if and only if the pair of arguments have a valid implementation for the given BinaryOperator.

(op BinaryOperator, left TypedExpr, right TypedExpr)

// if the pair of arguments have a valid implementation for the given
// BinaryOperator.
func newBinExprIfValidOverload(op BinaryOperator, left TypedExpr, right TypedExpr) *BinaryExpr {
	leftRet, rightRet := left.ResolvedType(), right.ResolvedType()
	fn, ok := BinOps[op].lookupImpl(leftRet, rightRet)
	if ok {
		expr := &BinaryExpr{
			Operator: op,
			Left:     left,
			Right:    right,
			fn:       fn,
		}
		expr.typ = returnTypeToFixedType(fn.returnType(), []TypedExpr{left, right})
		return expr
	}
	return nil
}

// Format implements the NodeFormatter interface.
func (node *BinaryExpr) Format(ctx *FmtCtx) {