Function AsDArray

postgres/parser/sem/tree/datum.go:1632–1640

AsDArray attempts to retrieve a *DArray from an Expr, returning a *DArray and a flag signifying whether the assertion was successful. The function should be used instead of direct type assertions wherever a *DArray wrapped by a *DOidWrapper is possible.

(e Expr)

// be used instead of direct type assertions wherever a *DArray wrapped by a
// *DOidWrapper is possible.
func AsDArray(e Expr) (*DArray, bool) {
	switch t := e.(type) {
	case *DArray:
		return t, true
	case *DOidWrapper:
		return AsDArray(t.Wrapped)
	}
	return nil, false
}

// MustBeDArray attempts to retrieve a *DArray from an Expr, panicking if the
// assertion fails.