From 7767ce246d795f1d4770044556de705a14713e9c Mon Sep 17 00:00:00 2001
From: Niels Lohmann <mail@nlohmann.me>
Date: Tue, 29 Sep 2026 08:41:16 +0200
Subject: [PATCH] Inline get() of arithmetic values of json_view

get<T>() of arithmetic types is inlined down to the conversion, so that
its checks of the node kind merge with those of the caller, and reading
an integer needs no call. Traversing every value: citm_catalog -6%,
marine_ik -5%, numbers and twitter -3%, mesh -2.5%, canada -1% (and
more above the float conversion from the digit layout: citm_catalog
-14%, marine_ik -11%).

Signed-off-by: Niels Lohmann <mail@nlohmann.me>
---
 include/nlohmann/detail/view/value.hpp | 2 +-
 include/nlohmann/json_view.hpp         | 4 ++--
 single_include/nlohmann/json_view.hpp  | 6 +++---
 3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/include/nlohmann/detail/view/value.hpp b/include/nlohmann/detail/view/value.hpp
index 64b05b254..b43a9c4df 100644
--- a/include/nlohmann/detail/view/value.hpp
+++ b/include/nlohmann/detail/view/value.hpp
@@ -40,7 +40,7 @@ converted with static_cast, booleans give 0 or 1, and other types throw
 type_error.302.
 */
 template<typename T, typename BasicJsonType>
-T arithmetic_value(const document_data& d, const node& n)
+NLOHMANN_VIEW_ALWAYS_INLINE T arithmetic_value(const document_data& d, const node& n)
 {
     switch (static_cast<value_t>(n.kind))
     {
diff --git a/include/nlohmann/json_view.hpp b/include/nlohmann/json_view.hpp
index 30330d073..d9e1ff836 100644
--- a/include/nlohmann/json_view.hpp
+++ b/include/nlohmann/json_view.hpp
@@ -512,7 +512,7 @@ class basic_json_view
     /// maps with string keys, and views are converted directly; other types
     /// through materialize().get<T>()
     template<typename T>
-    T get() const
+    NLOHMANN_VIEW_ALWAYS_INLINE T get() const
     {
         return get_impl(detail::view::value_tag<T> {}, detail::priority_tag<2> {});
     }
@@ -599,7 +599,7 @@ class basic_json_view
     }
 
     template < typename T, typename std::enable_if < std::is_arithmetic<T>::value && !std::is_same<T, bool>::value, int >::type = 0 >
-    T get_impl(detail::view::value_tag<T> /*unused*/, detail::priority_tag<2> /*unused*/) const
+    NLOHMANN_VIEW_ALWAYS_INLINE T get_impl(detail::view::value_tag<T> /*unused*/, detail::priority_tag<2> /*unused*/) const
     {
         if (NLOHMANN_VIEW_UNLIKELY(m_node == nullptr))
         {
diff --git a/single_include/nlohmann/json_view.hpp b/single_include/nlohmann/json_view.hpp
index ae308dab1..d7547732a 100644
--- a/single_include/nlohmann/json_view.hpp
+++ b/single_include/nlohmann/json_view.hpp
@@ -2725,7 +2725,7 @@ converted with static_cast, booleans give 0 or 1, and other types throw
 type_error.302.
 */
 template<typename T, typename BasicJsonType>
-T arithmetic_value(const document_data& d, const node& n)
+NLOHMANN_VIEW_ALWAYS_INLINE T arithmetic_value(const document_data& d, const node& n)
 {
     switch (static_cast<value_t>(n.kind))
     {
@@ -3249,7 +3249,7 @@ class basic_json_view
     /// maps with string keys, and views are converted directly; other types
     /// through materialize().get<T>()
     template<typename T>
-    T get() const
+    NLOHMANN_VIEW_ALWAYS_INLINE T get() const
     {
         return get_impl(detail::view::value_tag<T> {}, detail::priority_tag<2> {});
     }
@@ -3336,7 +3336,7 @@ class basic_json_view
     }
 
     template < typename T, typename std::enable_if < std::is_arithmetic<T>::value && !std::is_same<T, bool>::value, int >::type = 0 >
-    T get_impl(detail::view::value_tag<T> /*unused*/, detail::priority_tag<2> /*unused*/) const
+    NLOHMANN_VIEW_ALWAYS_INLINE T get_impl(detail::view::value_tag<T> /*unused*/, detail::priority_tag<2> /*unused*/) const
     {
         if (NLOHMANN_VIEW_UNLIKELY(m_node == nullptr))
         {