| Design 1 |
|
|
|
|
|
|
|
|
|
|
|
|
| • | Operations
treat nodes of different types |
||||||||||
| differently |
|||||||||||
| – | Ex: code
generated for assignments is |
||||||||||
| different than
code generated for calls |
|||||||||||
| • | Proposed
design: add a method to each |
||||||||||
| node class to
perform a particular |
|||||||||||
| operation on
that node type |
|||||||||||