Part2: MDEV-12518 Unify sql_yacc.yy and sql_yacc_ora.yy

Generate sql_yacc_ora.yy from sql_yacc.yy , by using cmake script
which does some simple string(REPLACE)

.gitignore

@@ -173,6 +173,7 @@ sql/sql_yacc.cc
 sql/sql_yacc.hh
 sql/sql_yacc_ora.cc
 sql/sql_yacc_ora.hh
+sql/sql_yacc_ora.yy
 storage/heap/hp_test1
 storage/heap/hp_test2
 storage/maria/aria_chk

sql/CMakeLists.txt

@@ -62,6 +62,17 @@ ADD_CUSTOM_COMMAND(
   DEPENDS gen_lex_token
 )
 
+ADD_CUSTOM_COMMAND(
+  OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/sql_yacc_ora.yy
+  COMMAND ${CMAKE_COMMAND}
+   "-DIN=${CMAKE_CURRENT_SOURCE_DIR}/sql_yacc.yy"
+   "-DOUT=${CMAKE_CURRENT_BINARY_DIR}/sql_yacc_ora.yy"
+   -P ${CMAKE_CURRENT_SOURCE_DIR}/gen_sql_yacc_ora_yy.cmake
+  DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/sql_yacc.yy
+)
+
+ADD_CUSTOM_TARGET(gen_sql_yacc_ora_yy DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/sql_yacc_ora.yy)
+
 ADD_DEFINITIONS(-DMYSQL_SERVER -DHAVE_EVENT_SCHEDULER)
 
 IF(SSL_DEFINES)
@@ -367,8 +378,7 @@ IF (NOT BISON_FOUND)
 ELSE()
   BISON_TARGET(gen_sql_yacc ${CMAKE_CURRENT_SOURCE_DIR}/sql_yacc.yy ${CMAKE_CURRENT_BINARY_DIR}/sql_yacc.cc
              COMPILE_FLAGS "-p MYSQL")
-
-  BISON_TARGET(gen_sql_yacc_ora ${CMAKE_CURRENT_SOURCE_DIR}/sql_yacc_ora.yy ${CMAKE_CURRENT_BINARY_DIR}/sql_yacc_ora.cc
+  BISON_TARGET(gen_sql_yacc_ora ${CMAKE_CURRENT_BINARY_DIR}/sql_yacc_ora.yy ${CMAKE_CURRENT_BINARY_DIR}/sql_yacc_ora.cc
              COMPILE_FLAGS "-p ORA")
 ENDIF()
 
@@ -396,6 +406,8 @@ ADD_CUSTOM_TARGET(
         ${CMAKE_CURRENT_BINARY_DIR}/sql_yacc_ora.cc
 )
 
+ADD_DEPENDENCIES(GenServerSource gen_sql_yacc_ora_yy)
+
 IF(WIN32 OR HAVE_DLOPEN AND NOT DISABLE_SHARED)
   ADD_LIBRARY(udf_example MODULE udf_example.c udf_example.def)
   SET_TARGET_PROPERTIES(udf_example PROPERTIES PREFIX "")

sql/gen_sql_yacc_ora_yy.cmake

@@ -0,0 +1,15 @@
+
+file(READ "${IN}" yytmp)
+
+# Comment out sql_mode=DEFAULT rules and directives (e.g. %expect, %type)
+string(REPLACE  "/* Start SQL_MODE_DEFAULT_SPECIFIC */"
+                "/* Start SQL_MODE_DEFAULT_SPECIFIC"      yytmp "${yytmp}")
+string(REPLACE  "/* End SQL_MODE_DEFAULT_SPECIFIC */"
+                   "End SQL_MODE_DEFAULT_SPECIFIC */"     yytmp "${yytmp}")
+
+# Uncomment sql_mode=ORACLE rules and directives
+string(REPLACE  "/* Start SQL_MODE_ORACLE_SPECIFIC"
+                "/* Start SQL_MODE_ORACLE_SPECIFIC */"    yytmp "${yytmp}")
+string(REPLACE     "End SQL_MODE_ORACLE_SPECIFIC */"
+                "/* End SQL_MODE_ORACLE_SPECIFIC */"      yytmp "${yytmp}")
+file(WRITE "${OUT}" "${yytmp}")

sql/sql_yacc.yy

@@ -322,14 +322,16 @@ bool my_yyoverflow(short **a, YYSTYPE **b, size_t *yystacksize);
 /*
   We should not introduce new conflicts any more.
 */
-//%{#ifdef SQL_MODE_DEFAULT_SPECIFIC
+
+/* Start SQL_MODE_DEFAULT_SPECIFIC */
 %expect 37
-//#endif %} // SQL_MODE_DEFAULT_SPECIFIC
+/* End SQL_MODE_DEFAULT_SPECIFIC */
 
 
-%{#ifdef SQL_MODE_ORACLE_SPECIFIC
+/* Start SQL_MODE_ORACLE_SPECIFIC
 %expect 40
-#endif %} // SQL_MODE_ORACLE_SPECIFIC
+End SQL_MODE_ORACLE_SPECIFIC */
+
 
 /*
    Comments for TOKENS.
@@ -1721,7 +1723,7 @@ bool my_yyoverflow(short **a, YYSTYPE **b, size_t *yystacksize);
 %type <vers_history_point> history_point
 %type <vers_column_versioning> with_or_without_system
 
-//%{#ifdef SQL_MODE_DEFAULT_SPECIFIC
+/* Start SQL_MODE_DEFAULT_SPECIFIC */
 %type <NONE> sp_tail_standalone
 %type <NONE> sp_unlabeled_block_not_atomic
 %type <NONE> sp_proc_stmt_in_returns_clause
@@ -1733,10 +1735,10 @@ bool my_yyoverflow(short **a, YYSTYPE **b, size_t *yystacksize);
 %type <spblock> sp_decl_variable_list
 %type <spblock> sp_decl_variable_list_anchored
 %type <kwd> reserved_keyword_udt_param_type
-//#endif %} // SQL_MODE_DEFAULT_SPECIFIC
+/* End SQL_MODE_DEFAULT_SPECIFIC */
 
 
-%{#ifdef SQL_MODE_ORACLE_SPECIFIC
+/* Start SQL_MODE_ORACLE_SPECIFIC
 %type <NONE> set_assign
 %type <spvar_mode> sp_opt_inout
 %type <NONE> sp_tail_standalone
@@ -1771,7 +1773,7 @@ bool my_yyoverflow(short **a, YYSTYPE **b, size_t *yystacksize);
 %type <lex> package_routine_lex
 %type <lex> package_specification_function
 %type <lex> package_specification_procedure
-#endif %} // SQL_MODE_ORACLE_SPECIFIC
+End SQL_MODE_ORACLE_SPECIFIC */
 
 %%