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MDEV-12238 Add Type_handler::Item_func_{plus|minus|mul|div|mod}_fix_length_and_dec()

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This commit is contained in:
Alexander Barkov
2017-04-13 06:50:00 +04:00
parent 949faa2ec2
commit 45730fb11e
8 changed files with 812 additions and 104 deletions
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92
sql/sql_type.h
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@ -51,6 +51,11 @@ class Item_char_typecast;
class Item_time_typecast;
class Item_date_typecast;
class Item_datetime_typecast;
class Item_func_plus;
class Item_func_minus;
class Item_func_mul;
class Item_func_div;
class Item_func_mod;
class cmp_item;
class in_vector;
class Type_std_attributes;
@ -303,6 +308,9 @@ public:
static const
Type_handler *aggregate_for_result_traditional(const Type_handler *h1,
const Type_handler *h2);
static const
Type_handler *aggregate_for_num_op_traditional(const Type_handler *h1,
const Type_handler *h2);
virtual const Name name() const= 0;
virtual enum_field_types field_type() const= 0;
@ -497,6 +505,17 @@ public:
Item_date_typecast_fix_length_and_dec(Item_date_typecast *item) const;
virtual bool
Item_datetime_typecast_fix_length_and_dec(Item_datetime_typecast *item) const;
virtual bool
Item_func_plus_fix_length_and_dec(Item_func_plus *func) const= 0;
virtual bool
Item_func_minus_fix_length_and_dec(Item_func_minus *func) const= 0;
virtual bool
Item_func_mul_fix_length_and_dec(Item_func_mul *func) const= 0;
virtual bool
Item_func_div_fix_length_and_dec(Item_func_div *func) const= 0;
virtual bool
Item_func_mod_fix_length_and_dec(Item_func_mod *func) const= 0;
};
@ -708,6 +727,12 @@ public:
DBUG_ASSERT(0);
return true;
}
bool Item_func_plus_fix_length_and_dec(Item_func_plus *) const;
bool Item_func_minus_fix_length_and_dec(Item_func_minus *) const;
bool Item_func_mul_fix_length_and_dec(Item_func_mul *) const;
bool Item_func_div_fix_length_and_dec(Item_func_div *) const;
bool Item_func_mod_fix_length_and_dec(Item_func_mod *) const;
};
@ -784,6 +809,11 @@ public:
bool Item_func_int_val_fix_length_and_dec(Item_func_int_val *) const;
bool Item_func_abs_fix_length_and_dec(Item_func_abs *) const;
bool Item_func_neg_fix_length_and_dec(Item_func_neg *) const;
bool Item_func_plus_fix_length_and_dec(Item_func_plus *) const;
bool Item_func_minus_fix_length_and_dec(Item_func_minus *) const;
bool Item_func_mul_fix_length_and_dec(Item_func_mul *) const;
bool Item_func_div_fix_length_and_dec(Item_func_div *) const;
bool Item_func_mod_fix_length_and_dec(Item_func_mod *) const;
};
@ -833,6 +863,11 @@ public:
bool Item_func_int_val_fix_length_and_dec(Item_func_int_val *) const;
bool Item_func_abs_fix_length_and_dec(Item_func_abs *) const;
bool Item_func_neg_fix_length_and_dec(Item_func_neg *) const;
bool Item_func_plus_fix_length_and_dec(Item_func_plus *) const;
bool Item_func_minus_fix_length_and_dec(Item_func_minus *) const;
bool Item_func_mul_fix_length_and_dec(Item_func_mul *) const;
bool Item_func_div_fix_length_and_dec(Item_func_div *) const;
bool Item_func_mod_fix_length_and_dec(Item_func_mod *) const;
};
@ -881,6 +916,11 @@ public:
bool Item_func_int_val_fix_length_and_dec(Item_func_int_val *) const;
bool Item_func_abs_fix_length_and_dec(Item_func_abs *) const;
bool Item_func_neg_fix_length_and_dec(Item_func_neg *) const;
bool Item_func_plus_fix_length_and_dec(Item_func_plus *) const;
bool Item_func_minus_fix_length_and_dec(Item_func_minus *) const;
bool Item_func_mul_fix_length_and_dec(Item_func_mul *) const;
bool Item_func_div_fix_length_and_dec(Item_func_div *) const;
bool Item_func_mod_fix_length_and_dec(Item_func_mod *) const;
};
@ -933,6 +973,11 @@ public:
bool Item_func_int_val_fix_length_and_dec(Item_func_int_val *) const;
bool Item_func_abs_fix_length_and_dec(Item_func_abs *) const;
bool Item_func_neg_fix_length_and_dec(Item_func_neg *) const;
bool Item_func_plus_fix_length_and_dec(Item_func_plus *) const;
bool Item_func_minus_fix_length_and_dec(Item_func_minus *) const;
bool Item_func_mul_fix_length_and_dec(Item_func_mul *) const;
bool Item_func_div_fix_length_and_dec(Item_func_div *) const;
bool Item_func_mod_fix_length_and_dec(Item_func_mod *) const;
};
@ -999,6 +1044,11 @@ public:
bool Item_func_int_val_fix_length_and_dec(Item_func_int_val *) const;
bool Item_func_abs_fix_length_and_dec(Item_func_abs *) const;
bool Item_func_neg_fix_length_and_dec(Item_func_neg *) const;
bool Item_func_plus_fix_length_and_dec(Item_func_plus *) const;
bool Item_func_minus_fix_length_and_dec(Item_func_minus *) const;
bool Item_func_mul_fix_length_and_dec(Item_func_mul *) const;
bool Item_func_div_fix_length_and_dec(Item_func_div *) const;
bool Item_func_mod_fix_length_and_dec(Item_func_mod *) const;
};
@ -1528,6 +1578,8 @@ public:
bool aggregate_for_result(const Type_handler *other);
bool aggregate_for_result(const char *funcname,
Item **item, uint nitems, bool treat_bit_as_number);
bool aggregate_for_num_op(const class Type_aggregator *aggregator,
const Type_handler *h0, const Type_handler *h1);
};
@ -1547,6 +1599,7 @@ extern Type_handler_set type_handler_set;
class Type_aggregator
{
bool m_is_commutative;
class Pair
{
public:
@ -1566,18 +1619,10 @@ class Type_aggregator
};
Dynamic_array<Pair> m_array;
const Pair* find_pair(const Type_handler *handler1,
const Type_handler *handler2) const
{
for (uint i= 0; i < m_array.elements(); i++)
{
const Pair& el= m_array.at(i);
if (el.eq(handler1, handler2) || el.eq(handler2, handler1))
return &el;
}
return NULL;
}
const Type_handler *handler2) const;
public:
Type_aggregator()
Type_aggregator(bool is_commutative= false)
:m_is_commutative(is_commutative)
{ }
bool add(const Type_handler *handler1,
const Type_handler *handler2,
@ -1591,14 +1636,35 @@ public:
const Pair* el= find_pair(handler1, handler2);
return el ? el->m_result : NULL;
}
bool is_commutative() const { return m_is_commutative; }
};
class Type_aggregator_commutative: public Type_aggregator
{
public:
Type_aggregator_commutative()
:Type_aggregator(true)
{ }
};
class Type_handler_data
{
public:
Type_aggregator m_type_aggregator_for_result;
Type_aggregator m_type_aggregator_for_comparison;
Type_aggregator_commutative m_type_aggregator_for_result;
Type_aggregator_commutative m_type_aggregator_for_comparison;
Type_aggregator_commutative m_type_aggregator_for_plus;
Type_aggregator_commutative m_type_aggregator_for_mul;
Type_aggregator m_type_aggregator_for_minus;
Type_aggregator m_type_aggregator_for_div;
Type_aggregator m_type_aggregator_for_mod;
#ifndef DBUG_OFF
// This is used for mtr purposes in debug builds
Type_aggregator m_type_aggregator_non_commutative_test;
#endif
bool init();
};