Method maybePopulateType

postgres/parser/sem/tree/datum.go:1461–1469

maybePopulateType populates the tuple's type if it hasn't yet been populated.

()

// maybePopulateType populates the tuple's type if it hasn't yet been
// populated.
func (d *DTuple) maybePopulateType() {
	if d.typ == nil {
		contents := make([]*types.T, len(d.D))
		for i, v := range d.D {
			contents[i] = v.ResolvedType()
		}
		d.typ = types.MakeTuple(contents)
	}
}

// ResolvedType implements the TypedExpr interface.
func (d *DTuple) ResolvedType() *types.T {