Your solution to the previous exercise probably doesn’t generalize to languages with nontrivial scoping rules. Explain how an AG such as that in Figure 4.14 might be modified to use a global symbol...

Your solution to the previous exercise probably doesn’t generalize to languages with nontrivial scoping rules. Explain how an AG such as that in Figure 4.14 might be modified to use a global symbol table similar to the one described in Section C 3.4.1. Among other things, you should consider nested scopes, the hiding of names in outer scopes, and the requirement (not enforced by the table of Section C 3.4.1) that variables be declared before they are used.