fixed issue in boxing

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

@@ -129,7 +129,7 @@ public class CodeGenImpl extends CodeGenBase
         StmtAnalyzer stmtAnalyzer = new StmtAnalyzer(funcInfo);
         int emptySlotNum = 4;
         
-        // backend.emitLW(A0, SP, varSlotMap.get(varName)) to load the variable using its name
+        // example usage: backend.emitLW(A0, SP, varSlotMap.get(varName)) to load the variable using its name
         Map<String, Integer> varSlotMap = stmtAnalyzer.varSlotMap;
         
         for (int i = 0; i < funcInfo.getParams().size(); i++) {
@@ -214,6 +214,7 @@ public class CodeGenImpl extends CodeGenBase
         private Map<SymbolInfo, Integer> offsetMap = new HashMap<>();
         
         /** Variable to keep track of slots of stored variables on stack */
+        // example usage: backend.emitLW(A0, SP, varSlotMap.get(varName)) to load the variable using its name
         private Map<String, Integer> varSlotMap = new HashMap<>();
         
         private final String size_label;
@@ -304,13 +305,13 @@ public class CodeGenImpl extends CodeGenBase
 	        			
 	        			if (expr.getInferredType().equals(Type.INT_TYPE)) {
 	        				if (formalParamInfo.getVarType().equals(Type.OBJECT_TYPE) || formalParamInfo.getVarType().equals(Type.INT_TYPE)) {
-	                        backend.emitJ(makeintLabel, "Box integer");
+	                        backend.emitJAL(makeintLabel, "Box integer");
 	        				} else  {
 	        					// FIXME: passed argument does not match formal parameter
 	        				}
 	                } else if (expr.getInferredType().equals(Type.BOOL_TYPE)) { 
 	                    	if (formalParamInfo.getVarType().equals(Type.OBJECT_TYPE) || formalParamInfo.getVarType().equals(Type.BOOL_TYPE)) {
-	                    		backend.emitJ(makeboolLabel, "Box boolean");
+	                    		backend.emitJAL(makeboolLabel, "Box boolean");
 	                    } else {
 	                    		// FIXME: passed argument does not match formal parameter
 	                    }