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feat: enable to convert different basic_values

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ToruNiina
2019-06-02 00:13:12 +09:00
parent 898423166f
commit 44184026f9
1 changed files with 78 additions and 7 deletions
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85
toml/value.hpp
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@@ -38,7 +38,7 @@ throw_bad_cast(value_t actual, const ::toml::basic_value<C, T, A>& v)
}));
}
// switch by `value_t` and call the corresponding `value::as_xxx()`.
// switch by `value_t` and call the corresponding `value::as_xxx()`. {{{
template<value_t T>
struct switch_cast {};
template<>
@@ -236,7 +236,8 @@ struct switch_cast<value_t::table>
{
return std::move(v).as_table();
}
};
}; // }}}
}// detail
template<typename Comment, // discard/preserve_comment
@@ -279,7 +280,7 @@ class basic_value
~basic_value() noexcept {this->cleanup();}
basic_value(const basic_value& v)
: type_(v.type()), region_info_(v.region_info_)
: type_(v.type()), region_info_(v.region_info_), comments_(v.comments_)
{
switch(v.type())
{
@@ -297,7 +298,8 @@ class basic_value
}
}
basic_value(basic_value&& v)
: type_(v.type()), region_info_(std::move(v.region_info_))
: type_(v.type()), region_info_(std::move(v.region_info_)),
comments_(std::move(comments_))
{
switch(this->type_) // here this->type_ is already initialized
{
@@ -318,6 +320,7 @@ class basic_value
{
this->cleanup();
this->region_info_ = v.region_info_;
this->comments_ = v.comments_;
this->type_ = v.type();
switch(this->type_)
{
@@ -339,6 +342,7 @@ class basic_value
{
this->cleanup();
this->region_info_ = std::move(v.region_info_);
this->comments_ = std::move(v.comments_);
this->type_ = v.type();
switch(this->type_)
{
@@ -357,6 +361,73 @@ class basic_value
return *this;
}
// -----------------------------------------------------------------------
// conversion between different basic_values.
template<typename C,
template<typename ...> class T,
template<typename ...> class A>
basic_value(const basic_value<C, T, A>& v)
: type_(v.type()), region_info_(v.region_info_), comments_(v.comments_)
{
switch(v.type())
{
case value_t::boolean : assigner(boolean_ , v.boolean_ ); break;
case value_t::integer : assigner(integer_ , v.integer_ ); break;
case value_t::floating : assigner(floating_ , v.floating_ ); break;
case value_t::string : assigner(string_ , v.string_ ); break;
case value_t::offset_datetime: assigner(offset_datetime_, v.offset_datetime_); break;
case value_t::local_datetime : assigner(local_datetime_ , v.local_datetime_ ); break;
case value_t::local_date : assigner(local_date_ , v.local_date_ ); break;
case value_t::local_time : assigner(local_time_ , v.local_time_ ); break;
case value_t::array :
{
array_type tmp(v.array_.begin(), v.array_.end());
assigner(array_, std::move(tmp));
break;
}
case value_t::table :
{
table_type tmp(v.table_.begin(), v.table_.end());
assigner(table_, std::move(tmp));
break;
}
default: break;
}
}
template<typename C,
template<typename ...> class T,
template<typename ...> class A>
basic_value& operator=(const basic_value<C, T, A>& v)
{
this->region_info_ = v.region_info_;
this->comments_ = v.comments_;
this->type_ = v.type_;
switch(v.type())
{
case value_t::boolean : assigner(boolean_ , v.boolean_ ); break;
case value_t::integer : assigner(integer_ , v.integer_ ); break;
case value_t::floating : assigner(floating_ , v.floating_ ); break;
case value_t::string : assigner(string_ , v.string_ ); break;
case value_t::offset_datetime: assigner(offset_datetime_, v.offset_datetime_); break;
case value_t::local_datetime : assigner(local_datetime_ , v.local_datetime_ ); break;
case value_t::local_date : assigner(local_date_ , v.local_date_ ); break;
case value_t::local_time : assigner(local_time_ , v.local_time_ ); break;
case value_t::array :
{
array_type tmp(v.array_.begin(), v.array_.end());
assigner(array_, std::move(tmp));
break;
}
case value_t::table :
{
table_type tmp(v.table_.begin(), v.table_.end());
assigner(table_, std::move(tmp));
break;
}
default: break;
}
}
// boolean ==============================================================
basic_value(boolean b)
@@ -942,9 +1013,7 @@ class basic_value
using array_storage = detail::storage<array_type>;
using table_storage = detail::storage<table_type>;
comment_type comments_;
std::shared_ptr<region_base> region_info_;
value_t type_;
value_t type_;
union
{
boolean boolean_;
@@ -958,6 +1027,8 @@ class basic_value
array_storage array_;
table_storage table_;
};
std::shared_ptr<region_base> region_info_;
comment_type comments_;
};
// default toml::value and default array/table.