MS-SBVAR: add keywords for freq option

preprocessor/DynareBison.yy

@@ -154,7 +154,7 @@ class ParsingDriver;
 %token OUTPUT_FILE_TAG DRAWS_NBR_BURN_IN_1 DRAWS_NBR_BURN_IN_2 HORIZON
 %token SBVAR TREND_VAR DEFLATOR GROWTH_FACTOR MS_IRF MS_VARIANCE_DECOMPOSITION
 %token MS_ESTIMATION MS_SIMULATION MS_COMPUTE_MDD MS_COMPUTE_PROBABILITIES MS_FORECAST
-%token SVAR_IDENTIFICATION EQUATION EXCLUSION LAG UPPER_CHOLESKY LOWER_CHOLESKY 
+%token SVAR_IDENTIFICATION EQUATION EXCLUSION LAG UPPER_CHOLESKY LOWER_CHOLESKY MONTHLY QUARTERLY
 %token MARKOV_SWITCHING CHAIN STATE DURATION NUMBER_OF_STATES
 %token SVAR COEFFICIENTS VARIANCES CONSTANTS EQUATIONS
 %token EXTERNAL_FUNCTION EXT_FUNC_NAME EXT_FUNC_NARGS FIRST_DERIV_PROVIDED SECOND_DERIV_PROVIDED
@@ -1979,7 +1979,13 @@ o_shocks : SHOCKS EQUAL '(' list_of_symbol_lists ')' { driver.option_symbol_list
 o_labels : LABELS EQUAL '(' symbol_list ')' { driver.option_symbol_list("labels"); };
 o_ms_drop : DROP EQUAL INT_NUMBER { driver.option_num("ms.drop", $3); };
 o_ms_mh_replic : MH_REPLIC EQUAL INT_NUMBER { driver.option_num("ms.mh_replic", $3); };
-o_freq : FREQ EQUAL INT_NUMBER {driver.option_num("ms.freq",$3); };
+o_freq : FREQ EQUAL INT_NUMBER
+         { driver.option_num("ms.freq",$3); }
+       | FREQ EQUAL MONTHLY
+         { driver.option_num("ms.freq","12"); }
+       | FREQ EQUAL QUARTERLY
+         { driver.option_num("ms.freq","4"); }
+       ;
 o_initial_year : INITIAL_YEAR EQUAL INT_NUMBER {driver.option_num("ms.initial_year",$3); };
 o_initial_subperiod : INITIAL_SUBPERIOD EQUAL INT_NUMBER {driver.option_num("ms.initial_subperiod",$3); };
 o_final_year : FINAL_YEAR EQUAL INT_NUMBER {driver.option_num("ms.final_year",$3); };

preprocessor/DynareFlex.ll

@@ -250,6 +250,8 @@ string eofbuff;
 <DYNARE_STATEMENT>second_deriv_provided {return token::SECOND_DERIV_PROVIDED;}
 
 <DYNARE_STATEMENT>freq {return token::FREQ;}
+<DYNARE_STATEMENT>monthly {return token::MONTHLY; }
+<DYNARE_STATEMENT>quarterly {return token::QUARTERLY; }
 <DYNARE_STATEMENT>initial_year {return token::INITIAL_YEAR;}
 <DYNARE_STATEMENT>initial_subperiod {return token::INITIAL_SUBPERIOD;}
 <DYNARE_STATEMENT>final_year {return token::FINAL_YEAR;}