zhangyiss/toml11
1
0
Fork 0
mirror of https://github.com/ToruNiina/toml11.git synced 2025-09-17 00:38:08 +08:00
Code Issues Actions Packages Projects Releases Wiki Activity

simplify the implementation of from_toml

Browse Source
This commit is contained in:
ToruNiina
2018-05-05 11:59:34 +09:00
parent 9555817901
commit 433636a06f
2 changed files with 22 additions and 55 deletions
Download Patch File Download Diff File Expand all files Collapse all files

58
toml/from_toml.hpp
View File

@@ -1,66 +1,14 @@
#ifndef TOML11_FROM_TOML
#define TOML11_FROM_TOML
#include "value.hpp"
#include "get.hpp"
namespace toml
{
template<typename T, toml::value_t vT = toml::detail::check_type<T>(),
typename std::enable_if<(vT != toml::value_t::Unknown &&
vT != value_t::Empty), std::nullptr_t>::type = nullptr>
template<typename T>
void from_toml(T& x, const toml::value& v)
{
if(v.type() != vT)
throw type_error("from_toml: value type: " + stringize(v.type()) +
std::string(" is not arguemnt type: ") + stringize(vT));
x = v.cast<vT>();
return;
}
template<typename T, toml::value_t vT = toml::detail::check_type<T>(),
typename std::enable_if<(vT == toml::value_t::Unknown) &&
(!toml::detail::is_map<T>::value) &&
toml::detail::is_container<T>::value, std::nullptr_t>::type = nullptr>
void from_toml(T& x, const toml::value& v)
{
// TODO the case of x is not dynamic container case
if(v.type() != value_t::Array)
throw type_error("from_toml: value type: " + stringize(v.type()) +
std::string(" is not argument type: Array"));
const auto& ar = v.cast<value_t::Array>();
try
{
toml::resize(x, ar.size());
}
catch(std::invalid_argument& iv)
{
throw toml::type_error("toml::from_toml: static array size is not enough");
}
auto iter = x.begin();
for(const auto& val : ar)
{
typename T::value_type v;
from_toml(v, val);
*iter = std::move(v);
++iter;
}
return;
}
template<typename T, toml::value_t vT = toml::detail::check_type<T>(),
typename std::enable_if<(vT == toml::value_t::Unknown) &&
toml::detail::is_map<T>::value, std::nullptr_t>::type = nullptr>
void from_toml(T& x, const toml::value& v)
{
if(v.type() != value_t::Table)
throw type_error("from_toml: value type: " + stringize(v.type()) +
std::string(" is not argument type: Table"));
x.clear();
const auto& tb = v.cast<value_t::Table>();
for(const auto& kv : tb)
{
x.insert(kv);
}
x = toml::get<T>(v);
return;
}