DSGE-Var: bug fix. Add init param statement at the before the estimation statement

preprocessor/ModFile.cc

@@ -86,6 +86,12 @@ ModFile::addStatement(Statement *st)
   statements.push_back(st);
 }
 
+void
+ModFile::addStatementAtFront(Statement *st)
+{
+  statements.insert(statements.begin(), st);
+}
+
 void
 ModFile::checkPass()
 {
@@ -226,7 +232,7 @@ ModFile::transformPass()
       {
         int sid = symbol_table.addSymbol("dsge_prior_weight", eParameter);
         if (!mod_file_struct.dsge_var_calibrated.empty())
-          addStatement(new InitParamStatement(sid,
+          addStatementAtFront(new InitParamStatement(sid,
                                                      expressions_tree.AddNumConstant(mod_file_struct.dsge_var_calibrated),
                                                      symbol_table));
       }

preprocessor/ModFile.hh

@@ -82,6 +82,8 @@ private:
 public:
   //! Add a statement
   void addStatement(Statement *st);
+  //! Add a statement at the front of the statements vector
+  void addStatementAtFront(Statement *st);
   //! Evaluate all the statements
   /*! \param warn_uninit Should a warning be displayed for uninitialized endogenous/exogenous/parameters ? */
   void evalAllExpressions(bool warn_uninit);