fix(ClassScope): fix the output of ClassScope

src/decaf/scope/ClassScope.java

 package decaf.scope;
 
+import java.util.List;
 import java.util.TreeSet;
 
 import decaf.symbol.Class;
 import decaf.symbol.Function;
+import decaf.symbol.FunctionTable;
 import decaf.symbol.Symbol;
 import decaf.utils.IndentPrintWriter;
 
@@ -48,9 +50,12 @@ public class ClassScope extends Scope {
 		for (Symbol symbol : ss) {
 			pw.println(symbol);
 		}
-		for (Symbol symbol : ss) {
-			if (symbol.isFunction()) {
-				((Function) symbol).getAssociatedScope().printTo(pw);
+		for (Symbol symbol : symbols.values()) {
+			if (symbol.isFunctionTable()) {
+				List<Function> functions = ((FunctionTable) symbol).getFunctions();
+				for (Function func : functions) {
+					func.getAssociatedScope().printTo(pw);
+				}
 			}
 		}
 		pw.decIndent();