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Added uniqueness constraint to type_set, plus minor cleanup

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rbock
2014-02-16 12:41:59 +01:00
parent 61a4797d0b
commit 8b37626b89
1 changed files with 9 additions and 8 deletions
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include/sqlpp11/detail/type_set.h
+9 -8
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@@ -41,19 +41,20 @@ namespace sqlpp
struct make_set;
// A type set
template<typename... Element>
template<typename... Elements>
struct type_set
{
using _elements_t = std::tuple<Element...>;
using size = std::tuple_size<_elements_t>;
using size = std::integral_constant<size_t, sizeof...(Elements)>;
using _is_type_set = std::true_type;
static_assert(std::is_same<type_set, typename make_set<Elements...>::type>::value, "use make_set to construct a set");
template<typename T>
struct count
{
template<typename E>
using same = std::is_same<T, E>;
static constexpr bool value = or_t<same, Element...>::value;
static constexpr bool value = or_t<same, Elements...>::value;
};
template<typename T>
@@ -77,7 +78,7 @@ namespace sqlpp
template<typename... T>
struct join<type_set<T...>>
{
using type = typename make_set<Element..., T...>::type;
using type = typename make_set<Elements..., T...>::type;
};
template<typename T>
@@ -101,7 +102,7 @@ namespace sqlpp
template<typename... T>
struct is_disjunct_from<type_set<T...>>
{
static constexpr bool value = not(or_t<type_set::count, T...>::value or or_t<type_set<T...>::template count, Element...>::value);
static constexpr bool value = not(or_t<type_set::count, T...>::value or or_t<type_set<T...>::template count, Elements...>::value);
};
template<typename T>
@@ -109,14 +110,14 @@ namespace sqlpp
{
using type = typename std::conditional<count<T>::value,
type_set,
type_set<Element..., T>>::type;
type_set<T, Elements...>>::type;
};
template<template<typename A> class Predicate, typename T>
struct insert_if
{
using type = typename std::conditional<Predicate<T>::value,
type_set<Element..., T>,
type_set<Elements..., T>,
type_set>::type;
};
};