MDEV-17288 Replace Item_func::get_arg0_date() to Date/Datetime methods

sql/item_func.h

@@ -177,12 +177,6 @@ class Item_func :public Item_func_or_sum,
   virtual void print(String *str, enum_query_type query_type);
   void print_op(String *str, enum_query_type query_type);
   void print_args(String *str, uint from, enum_query_type query_type);
-  inline bool get_arg0_date(MYSQL_TIME *ltime, ulonglong fuzzy_date)
-  {
-    DBUG_ASSERT(!(fuzzy_date & TIME_TIME_ONLY));
-    Datetime dt(current_thd, args[0], fuzzy_date);
-    return (null_value= dt.copy_to_mysql_time(ltime));
-  }
   bool is_null() { 
     update_null_value();
     return null_value; 

sql/sql_time.cc

@@ -175,7 +175,7 @@ int calc_weekday(long daynr,bool sunday_first_day_of_week)
 	next week is week 1.
 */
 
-uint calc_week(MYSQL_TIME *l_time, uint week_behaviour, uint *year)
+uint calc_week(const MYSQL_TIME *l_time, uint week_behaviour, uint *year)
 {
   uint days;
   ulong daynr=calc_daynr(l_time->year,l_time->month,l_time->day);

sql/sql_time.h

@@ -120,7 +120,7 @@ int my_time_compare(const MYSQL_TIME *a, const MYSQL_TIME *b);
 void localtime_to_TIME(MYSQL_TIME *to, struct tm *from);
 
 void calc_time_from_sec(MYSQL_TIME *to, ulong seconds, ulong microseconds);
-uint calc_week(MYSQL_TIME *l_time, uint week_behaviour, uint *year);
+uint calc_week(const MYSQL_TIME *l_time, uint week_behaviour, uint *year);
 
 int calc_weekday(long daynr,bool sunday_first_day_of_week);
 bool parse_date_time_format(timestamp_type format_type, 

sql/sql_type.h

@@ -920,6 +920,31 @@ class Temporal_with_date: public Temporal
   void check_date_or_invalidate(int *warn, sql_mode_t flags);
   void make_from_item(THD *thd, Item *item, sql_mode_t flags);
   void make_from_item(THD *thd, Item *item);
+
+  ulong daynr() const
+  {
+    return (ulong) ::calc_daynr((uint) year, (uint) month, (uint) day);
+  }
+  ulong dayofyear() const
+  {
+    return (ulong) (daynr() - ::calc_daynr(year, 1, 1) + 1);
+  }
+  uint quarter() const
+  {
+    return (month + 2) / 3;
+  }
+  uint week(uint week_behaviour) const
+  {
+    uint year;
+    return calc_week(this, week_behaviour, &year);
+  }
+  uint yearweek(uint week_behaviour) const
+  {
+    uint year;
+    uint week= calc_week(this, week_behaviour, &year);
+    return week + year * 100;
+  }
+
   Temporal_with_date()
   {
     time_type= MYSQL_TIMESTAMP_NONE;
@@ -1025,6 +1050,32 @@ class Date: public Temporal_with_date
     *ltime= *this;
     return false;
   }
+  ulong daynr() const
+  {
+    DBUG_ASSERT(is_valid_date_slow());
+    return Temporal_with_date::daynr();
+  }
+  ulong dayofyear() const
+  {
+    DBUG_ASSERT(is_valid_date_slow());
+    return Temporal_with_date::dayofyear();
+  }
+  uint quarter() const
+  {
+    DBUG_ASSERT(is_valid_date_slow());
+    return Temporal_with_date::quarter();
+  }
+  uint week(uint week_behaviour) const
+  {
+    DBUG_ASSERT(is_valid_date_slow());
+    return Temporal_with_date::week(week_behaviour);
+  }
+  uint yearweek(uint week_behaviour) const
+  {
+    DBUG_ASSERT(is_valid_date_slow());
+    return Temporal_with_date::yearweek(week_behaviour);
+  }
+
   longlong to_longlong() const
   {
     return is_valid_date() ? (longlong) TIME_to_ulonglong_date(this) : 0LL;
@@ -1175,11 +1226,40 @@ class Datetime: public Temporal_with_date
     DBUG_ASSERT(is_valid_value_slow());
     return time_type == MYSQL_TIMESTAMP_DATETIME;
   }
+  bool check_date(longlong flags, int *warnings) const
+  {
+    DBUG_ASSERT(is_valid_datetime_slow());
+    return ::check_date(this, (year || month || day), flags, warnings);
+  }
+  bool check_date(longlong flags) const
+  {
+    int dummy; /* unused */
+    return check_date(flags, &dummy);
+  }
   bool hhmmssff_is_zero() const
   {
     DBUG_ASSERT(is_valid_datetime_slow());
     return hour == 0 && minute == 0 && second == 0 && second_part == 0;
   }
+  ulong daynr() const
+  {
+    DBUG_ASSERT(is_valid_datetime_slow());
+    return Temporal_with_date::daynr();
+  }
+  longlong hhmmss_to_seconds_abs() const
+  {
+    DBUG_ASSERT(is_valid_datetime_slow());
+    return hour * 3600L + minute * 60 + second;
+  }
+  longlong hhmmss_to_seconds() const
+  {
+    return neg ? -hhmmss_to_seconds_abs() : hhmmss_to_seconds_abs();
+  }
+  longlong to_seconds() const
+  {
+    return hhmmss_to_seconds() + (longlong) daynr() * 24L * 3600L;
+  }
+
   const MYSQL_TIME *get_mysql_time() const
   {
     DBUG_ASSERT(is_valid_datetime_slow());