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feat: add static_assert for location/range

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to check the container is randomly-accessible
This commit is contained in:
ToruNiina
2019-04-12 18:00:53 +09:00
parent 595fb1aef3
commit ea13e40889
1 changed files with 10 additions and 2 deletions
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12
toml/region.hpp
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@@ -62,10 +62,14 @@ struct region_base
template<typename Container>
struct location final : public region_base
{
static_assert(std::is_same<char, typename Container::value_type>::value,"");
using const_iterator = typename Container::const_iterator;
using source_ptr = std::shared_ptr<const Container>;
static_assert(std::is_same<char, typename Container::value_type>::value,"");
static_assert(std::is_same<std::random_access_iterator_tag,
typename std::iterator_traits<const_iterator>::iterator_category>::value,
"container should be randomly accessible");
location(std::string name, Container cont)
: source_(std::make_shared<Container>(std::move(cont))),
source_name_(std::move(name)), iter_(source_->cbegin())
@@ -139,10 +143,14 @@ struct location final : public region_base
template<typename Container>
struct region final : public region_base
{
static_assert(std::is_same<char, typename Container::value_type>::value,"");
using const_iterator = typename Container::const_iterator;
using source_ptr = std::shared_ptr<const Container>;
static_assert(std::is_same<char, typename Container::value_type>::value,"");
static_assert(std::is_same<std::random_access_iterator_tag,
typename std::iterator_traits<const_iterator>::iterator_category>::value,
"container should be randomly accessible");
// delete default constructor. source_ never be null.
region() = delete;