Tests started. Enabling constant declaration

scope.cpp

@@ -24,6 +24,10 @@ void scope_init() {
     are_we_inside_local = false;
 }
 
+const bool scope_is_local() {
+    return are_we_inside_local;
+}
+
 void scope_open_local() {
     are_we_inside_local = true;
 }
@@ -49,7 +53,7 @@ void scope_close_block() {
     while (local.variables.size() > size_before_block) local.variables.pop_back();
 }
 
-const uint32_t scope_declare_variable(const std::string name, const int type, const int length) {
+const int scope_declare_variable(const std::string name, const int type, const int length) {
     t_scope& scope = (are_we_inside_local ? local : global);
     if (are_we_inside_local) {
         for (int i = blocks.top(); i < scope.variables.size(); i++ ) if (scope.variables[i].name == name) return -1;
@@ -69,6 +73,7 @@ const bool scope_variable_exists(const std::string name) {
         current_var = &v;
         return true;
     }
+    return false;
 }
 
 const uint32_t scope_get_variable_address() {