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refactor: simplify serializer's template argument

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ToruNiina 2020-03-12 13:46:17 +09:00
parent 9694afbe32
commit f125cca010
1 changed files with 12 additions and 7 deletions
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19
toml/serializer.hpp
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@ -49,12 +49,14 @@ inline std::string format_key(const toml::key& key)
return token;
}
template<typename Comment,
template<typename ...> class Table,
template<typename ...> class Array>
template<typename Value>
struct serializer
{
using value_type = basic_value<Comment, Table, Array>;
static_assert(detail::is_basic_value<Value>::value,
"toml::serializer is for toml::value and its variants, "
"toml::basic_value<...>.");
using value_type = Value;
using key_type = typename value_type::key_type ;
using comment_type = typename value_type::comment_type ;
using boolean_type = typename value_type::boolean_type ;
@ -717,6 +719,7 @@ format(const basic_value<C, M, V>& v, std::size_t w = 80u,
int fprec = std::numeric_limits<toml::floating>::max_digits10,
bool no_comment = false, bool force_inline = false)
{
using value_type = basic_value<C, M, V>;
// if value is a table, it is considered to be a root object.
// the root object can't be an inline table.
if(v.is_table())
@ -727,10 +730,10 @@ format(const basic_value<C, M, V>& v, std::size_t w = 80u,
oss << v.comments();
oss << '\n'; // to split the file comment from the first element
}
oss << visit(serializer<C, M, V>(w, fprec, no_comment, false), v);
oss << visit(serializer<value_type>(w, fprec, no_comment, false), v);
return oss.str();
}
return visit(serializer<C, M, V>(w, fprec, force_inline), v);
return visit(serializer<value_type>(w, fprec, force_inline), v);
}
namespace detail
@ -766,6 +769,8 @@ template<typename charT, typename traits, typename C,
std::basic_ostream<charT, traits>&
operator<<(std::basic_ostream<charT, traits>& os, const basic_value<C, M, V>& v)
{
using value_type = basic_value<C, M, V>;
// get status of std::setw().
const auto w = static_cast<std::size_t>(os.width());
const int fprec = static_cast<int>(os.precision());
@ -781,7 +786,7 @@ operator<<(std::basic_ostream<charT, traits>& os, const basic_value<C, M, V>& v)
os << '\n'; // to split the file comment from the first element
}
// the root object can't be an inline table. so pass `false`.
os << visit(serializer<C, M, V>(w, fprec, false, no_comment), v);
os << visit(serializer<value_type>(w, fprec, false, no_comment), v);
// if v is a non-table value, and has only one comment, then
// put a comment just after a value. in the following way.