started work on call_with_args

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

@@ -364,6 +364,7 @@ public class CodeGenImpl extends CodeGenBase {
                 FuncInfo func =  (FuncInfo) globalSymbols.get(callExpr.function.name);
                 for (Expr e : callExpr.args) {
                     backend.emitADDI(SP, SP, -4, "Increment stack ptr by 1");
+                    System.out.println(e.getInferredType());
                     e.dispatch(this);
                 }
                 // Push parameters onto stack
@@ -410,9 +411,21 @@ public class CodeGenImpl extends CodeGenBase {
         @Override
         public Void analyze(Identifier id) {
             // NOT DONE
+            boolean argFlag = false;
+            int argCtr = 0;
+            for (String s : funcInfo.getParams()) {
+                if (id.name.equals(s)) {
+                    argFlag = true;
+                    break;
+                }
+                argCtr++;
+            }
             SymbolInfo ident = sym.get(id.name);
-            // global var case
-            if (ident instanceof GlobalVarInfo) {
+            System.out.println(id.name);
+            if (argFlag){
+                int offset = argCtr * backend.getWordSize();
+                backend.emitLW(A0, FP, offset, "Load stack argument");
+            } else if (ident instanceof GlobalVarInfo) {     // global var case
                 backend.emitLW(A0, ((GlobalVarInfo) ident).getLabel(), "Load identifier");
                 backend.emitSW(A0, SP, 0, "Push to stack");
             } else if (ident instanceof StackVarInfo){ // local variable
@@ -518,6 +531,7 @@ public class CodeGenImpl extends CodeGenBase {
                         backend.emitXOR(T0, T0, T1, "== operator on BOOL/INT");
                         backend.emitSEQZ(T0, T0, "Set to 1 if XOR results in 0, they were equal");
                         backend.emitSW(T0, SP, 0, "Push result onto stack");
+                        return null;
                     }
 
                 case "!=":