/*
Create a key value pair using the operands of the input
expression Array construct and return.
*/
func NewPair(expr expression.Expression) (*Pair, error) {
array, ok := expr.(*expression.ArrayConstruct)
if !ok {
return nil, fmt.Errorf("Invalid VALUES expression %s", expr.String())
}
operands := array.Operands()
if len(operands) != 2 {
return nil, fmt.Errorf("Invalid VALUES expression %s", expr.String())
}
pair := &Pair{
Key: operands[0],
Value: operands[1],
}
return pair, nil
}
