modified: src/main/java/chocopy/pa3/CodeGenImpl.java

src/main/java/chocopy/pa3/CodeGenImpl.java

@@ -454,7 +454,7 @@ public class CodeGenImpl extends CodeGenBase
                 this.regHandle = regHandle;
             }
             public void free(){
-                if(regHandle > 0){
+                if(regHandle >= 0){
                     freeRegister(regHandle);
                     regHandle = -1;
                 }
@@ -869,18 +869,6 @@ public class CodeGenImpl extends CodeGenBase
                 backend.emitJAL(errorNI, "Operator not implemented");
             return Register.A0;
         }
-        private SymbolInfo getSymbolInfo(Identifier id){
-            SymbolTable curr_sym = sym;
-            SymbolInfo info = null;
-            String id_name = id.name;
-            while(curr_sym != null){
-                info = (SymbolInfo) curr_sym.get(id_name);
-                if(info != null)
-                    return info;
-                curr_sym = curr_sym.getParent();
-            }
-            return info;
-        }
         @Override
         public Register analyze(Identifier node) 
         {