From 6569c26e1bb4ee35898fe519d1646dcb18d5935c Mon Sep 17 00:00:00 2001
From: ToruNiina <niina.toru.68u@gmail.com>
Date: Sun, 2 Jun 2019 19:04:32 +0900
Subject: [PATCH] feat: make SFINAE condition strict

---
 toml/get.hpp | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/toml/get.hpp b/toml/get.hpp
index 92184c3..03cf10e 100644
--- a/toml/get.hpp
+++ b/toml/get.hpp
@@ -416,8 +416,9 @@ T get(const basic_value<C, M, V>& v)
 
 // for toml::table.
 template<typename T, typename Table>
-enable_if_t<detail::is_map<Table>::value, decltype(
-    ::toml::get<T>(std::declval<typename Table::mapped_type&>()))>
+enable_if_t<detail::conjunction<detail::is_map<Table>,
+    detail::is_basic_value<typename Table::mapped_type>>::value,
+    decltype(::toml::get<T>(std::declval<typename Table::mapped_type&>()))>
 find(Table& tab, const toml::key& ky, std::string tn = "unknown table")
 {
     if(tab.count(ky) == 0)
@@ -428,8 +429,9 @@ find(Table& tab, const toml::key& ky, std::string tn = "unknown table")
     return ::toml::get<T>(tab.at(ky));
 }
 template<typename T, typename Table>
-enable_if_t<detail::is_map<Table>::value, decltype(
-    ::toml::get<T>(std::declval<typename Table::mapped_type const&>()))>
+enable_if_t<detail::conjunction<detail::is_map<Table>,
+    detail::is_basic_value<typename Table::mapped_type>>::value,
+    decltype(::toml::get<T>(std::declval<typename Table::mapped_type const&>()))>
 find(Table const& tab, const toml::key& ky, std::string tn = "unknown table")
 {
     if(tab.count(ky) == 0)
@@ -440,8 +442,9 @@ find(Table const& tab, const toml::key& ky, std::string tn = "unknown table")
     return ::toml::get<T>(tab.at(ky));
 }
 template<typename T, typename Table>
-enable_if_t<detail::is_map<Table>::value, decltype(
-    ::toml::get<T>(std::declval<typename Table::mapped_type &&>()))>
+enable_if_t<detail::conjunction<detail::is_map<Table>,
+    detail::is_basic_value<typename Table::mapped_type>>::value,
+    decltype(::toml::get<T>(std::declval<typename Table::mapped_type &&>()))>
 find(typename std::remove_reference<Table>&& tab, const toml::key& ky,
      std::string tn = "unknown table")
 {