update nlohmann:json to v3.12.0

external/json/include/nlohmann/detail/input/input_adapters.hpp

@@ -1,9 +1,9 @@
 //     __ _____ _____ _____
 //  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.11.2
+// |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013 - 2025 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT
 
 #pragma once
@@ -23,8 +23,10 @@
     #include <istream>  // istream
 #endif                  // JSON_NO_IO
 
+#include <nlohmann/detail/exceptions.hpp>
 #include <nlohmann/detail/iterators/iterator_traits.hpp>
 #include <nlohmann/detail/macro_scope.hpp>
+#include <nlohmann/detail/meta/type_traits.hpp>
 
 NLOHMANN_JSON_NAMESPACE_BEGIN
 namespace detail
@@ -66,12 +68,18 @@ class file_input_adapter
         return std::fgetc(m_file);
     }
 
+    // returns the number of characters successfully read
+    template<class T>
+    std::size_t get_elements(T* dest, std::size_t count = 1)
+    {
+        return fread(dest, 1, sizeof(T) * count, m_file);
+    }
+
   private:
     /// the file pointer to read from
     std::FILE* m_file;
 };
 
-
 /*!
 Input adapter for a (caching) istream. Ignores a UFT Byte Order Mark at
 beginning of input. Does not support changing the underlying std::streambuf
@@ -126,6 +134,17 @@ class input_stream_adapter
         return res;
     }
 
+    template<class T>
+    std::size_t get_elements(T* dest, std::size_t count = 1)
+    {
+        auto res = static_cast<std::size_t>(sb->sgetn(reinterpret_cast<char*>(dest), static_cast<std::streamsize>(count * sizeof(T))));
+        if (JSON_HEDLEY_UNLIKELY(res < count * sizeof(T)))
+        {
+            is->clear(is->rdstate() | std::ios::eofbit);
+        }
+        return res;
+    }
+
   private:
     /// the associated input stream
     std::istream* is = nullptr;
@@ -145,16 +164,36 @@ class iterator_input_adapter
         : current(std::move(first)), end(std::move(last))
     {}
 
-    typename std::char_traits<char_type>::int_type get_character()
+    typename char_traits<char_type>::int_type get_character()
     {
         if (JSON_HEDLEY_LIKELY(current != end))
         {
-            auto result = std::char_traits<char_type>::to_int_type(*current);
+            auto result = char_traits<char_type>::to_int_type(*current);
             std::advance(current, 1);
             return result;
         }
 
-        return std::char_traits<char_type>::eof();
+        return char_traits<char_type>::eof();
+    }
+
+    // for general iterators, we cannot really do something better than falling back to processing the range one-by-one
+    template<class T>
+    std::size_t get_elements(T* dest, std::size_t count = 1)
+    {
+        auto* ptr = reinterpret_cast<char*>(dest);
+        for (std::size_t read_index = 0; read_index < count * sizeof(T); ++read_index)
+        {
+            if (JSON_HEDLEY_LIKELY(current != end))
+            {
+                ptr[read_index] = static_cast<char>(*current);
+                std::advance(current, 1);
+            }
+            else
+            {
+                return read_index;
+            }
+        }
+        return count * sizeof(T);
     }
 
   private:
@@ -170,7 +209,6 @@ class iterator_input_adapter
     }
 };
 
-
 template<typename BaseInputAdapter, size_t T>
 struct wide_string_input_helper;
 
@@ -294,7 +332,7 @@ struct wide_string_input_helper<BaseInputAdapter, 2>
     }
 };
 
-// Wraps another input apdater to convert wide character types into individual bytes.
+// Wraps another input adapter to convert wide character types into individual bytes.
 template<typename BaseInputAdapter, typename WideCharType>
 class wide_string_input_adapter
 {
@@ -321,6 +359,13 @@ class wide_string_input_adapter
         return utf8_bytes[utf8_bytes_index++];
     }
 
+    // parsing binary with wchar doesn't make sense, but since the parsing mode can be runtime, we need something here
+    template<class T>
+    std::size_t get_elements(T* /*dest*/, std::size_t /*count*/ = 1)
+    {
+        JSON_THROW(parse_error::create(112, 1, "wide string type cannot be interpreted as binary data", nullptr));
+    }
+
   private:
     BaseInputAdapter base_adapter;
 
@@ -339,7 +384,6 @@ class wide_string_input_adapter
     std::size_t utf8_bytes_filled = 0;
 };
 
-
 template<typename IteratorType, typename Enable = void>
 struct iterator_input_adapter_factory
 {
@@ -418,10 +462,17 @@ typename container_input_adapter_factory_impl::container_input_adapter_factory<C
     return container_input_adapter_factory_impl::container_input_adapter_factory<ContainerType>::create(container);
 }
 
+// specialization for std::string
+using string_input_adapter_type = decltype(input_adapter(std::declval<std::string>()));
+
 #ifndef JSON_NO_IO
 // Special cases with fast paths
 inline file_input_adapter input_adapter(std::FILE* file)
 {
+    if (file == nullptr)
+    {
+        JSON_THROW(parse_error::create(101, 0, "attempting to parse an empty input; check that your input string or stream contains the expected JSON", nullptr));
+    }
     return file_input_adapter(file);
 }
 
@@ -448,9 +499,13 @@ template < typename CharT,
                int >::type = 0 >
 contiguous_bytes_input_adapter input_adapter(CharT b)
 {
+    if (b == nullptr)
+    {
+        JSON_THROW(parse_error::create(101, 0, "attempting to parse an empty input; check that your input string or stream contains the expected JSON", nullptr));
+    }
     auto length = std::strlen(reinterpret_cast<const char*>(b));
     const auto* ptr = reinterpret_cast<const char*>(b);
-    return input_adapter(ptr, ptr + length);
+    return input_adapter(ptr, ptr + length); // cppcheck-suppress[nullPointerArithmeticRedundantCheck]
 }
 
 template<typename T, std::size_t N>