tweaking statement options

src/symbol_table.c

@@ -4,6 +4,8 @@
 #include "symbol_table.h"
 
 Constant_Stack *head = NULL;
+Context_stack *context_head = NULL;
+TableNode* comparator = NULL;
 int temp2_count = 0;
 int temp3_count = 0;
 
@@ -53,6 +55,35 @@ Constant_Stack *Push(TableNode *type, void *value, bool isConst) {
     return cs;
 }
 
+Context_stack *PushContext(int context) {
+    if (context != 1 && context != 2 && context != 3 && context != 0) {
+        printdebug(
+            "invalid context passed in");
+        return NULL;
+    }
+    Context_stack *cs = (Context_stack *)malloc(sizeof(Context_stack));
+    cs->con = context;
+    if (context_head == NULL) {
+        context_head = cs;
+        cs->next = NULL;
+    } else {
+        cs->next = context_head;
+        context_head = cs;
+    }
+    return cs;
+}
+
+int PopContext() {
+    if (context_head == NULL) {
+        printf("cannot pop from an empty stack. Invalid.\n");
+        return -1;
+    }
+    Context_stack *cs = context_head;
+    context_head = context_head->next;
+    printf("Popped context off stack: number %d\n", cs->con);
+    return cs->con;
+}
+
 Constant_Stack *Pop() {
     if (head == NULL) {
         printf("cannot pop from an empty stack. Invalid.\n");