add irf_shocks option to estimation

doc/dynare.texi

@@ -3760,6 +3760,7 @@ in @code{estimated_params} is now deprecated and will be removed in a
 future release of Dynare.
 
 @item dsge_var = @var{DOUBLE}
+@anchor{dsge_var}
 Triggers the estimation of a DSGE-VAR model, where the weight of the
 DSGE prior of the VAR model is calibrated to the value passed. NB: The
 previous method of declaring @code{dsge_prior_weight} as a parameter
@@ -3856,6 +3857,10 @@ this covariance matrix. Default is @code{1}.
 @item irf = @var{INTEGER}
 @xref{irf}. Only used if @ref{bayesian_irf} is passed.
 
+@item irf_shocks = ( @var{VARIABLE_NAME} [[,] @var{VARIABLE_NAME} @dots{}] )
+@xref{irf_shocks}. Only used if @ref{bayesian_irf} is passed. Cannot be used
+with @ref{dsge_var}.
+
 @item aim_solver
 @xref{aim_solver}.
 @end table

preprocessor/ComputingTasks.cc

@@ -287,10 +287,17 @@ EstimationStatement::checkPass(ModFileStructure &mod_file_struct)
   if (it != options_list.num_options.end() && it->second == "1")
     mod_file_struct.partial_information = true;
 
-  // Fill in mod_file_struct.dsge_var_calibrated
   it = options_list.num_options.find("dsge_var");
   if (it != options_list.num_options.end())
-    mod_file_struct.dsge_var_calibrated = it->second;
+    // Ensure that irf_shocks & dsge_var have not both been passed
+    if (options_list.symbol_list_options.find("irf_shocks") != options_list.symbol_list_options.end())
+      {
+        cerr << "The irf_shocks and dsge_var options may not both be passed to estimation." << endl;
+        exit(EXIT_FAILURE);
+      }
+    else
+      // Fill in mod_file_struct.dsge_var_calibrated
+      mod_file_struct.dsge_var_calibrated = it->second;
 
   // Fill in mod_file_struct.dsge_var_estimated
   OptionsList::string_options_t::const_iterator it_str = options_list.string_options.find("dsge_var");

preprocessor/DynareBison.yy

@@ -1191,6 +1191,7 @@ estimation_options : o_datafile
                    | o_selected_variables_only
                    | o_conditional_variance_decomposition
                    | o_cova_compute
+                   | o_irf_shocks
                    ;
 
 list_optim_option : QUOTED_STRING COMMA QUOTED_STRING