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LibSQL: Implement binary operators for Value objects

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The behaviour of the various operators is supposed to mimic that of
the same operators in PostgreSQL; the '+' operator for example will
successfully add '98' (string) and 2 (integer), but not 'foo' and 2.

Also removed some redundant const& parameter declarations for
intrinsic types (ints and doubles etc). Passing those by const& doesn't
make a lot of sense.
This commit is contained in:
Jan de Visser 2021-10-21 18:06:24 -04:00 • committed by Andreas Kling
parent 3618ca2420
commit 73fc023652
2 changed files with 161 additions and 6 deletions
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18
Userland/Libraries/LibSQL/Value.h
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@ -56,6 +56,7 @@ public:
explicit Value(String const&);
explicit Value(char const*);
explicit Value(int);
explicit Value(u32);
explicit Value(double);
explicit Value(bool);
@ -84,9 +85,10 @@ public:
void assign(Value const& other_value);
void assign(String const& string_value);
void assign(int const& int_value);
void assign(double const& double_value);
void assign(bool const& bool_value);
void assign(int int_value);
void assign(u32 unsigned_int_value);
void assign(double double_value);
void assign(bool bool_value);
void assign(Vector<Value> const& values);
Value& operator=(Value const& other);
@ -116,6 +118,16 @@ public:
bool operator>(Value const&) const;
bool operator>=(Value const&) const;
Value add(Value const&) const;
Value subtract(Value const&) const;
Value multiply(Value const&) const;
Value divide(Value const&) const;
Value modulo(Value const&) const;
Value shift_left(Value const&) const;
Value shift_right(Value const&) const;
Value bitwise_or(Value const&) const;
Value bitwise_and(Value const&) const;
[[nodiscard]] TupleElementDescriptor descriptor() const
{
return { "", type(), Order::Ascending };