feat: add nlohmann/json library

LICENSE

@@ -227,3 +227,30 @@ AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
+
+--------------------------------------------------------------------------------
+
+3rdparty dependency nlohmann-json is statically linked in certain binary
+distributions. nlohmann-json has the following license:
+
+MIT License
+
+Copyright (c) 2013-2022 Niels Lohmann
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

cmake_modules/IcebergThirdpartyToolchain.cmake

@@ -226,3 +226,36 @@ function(resolve_nanoarrow_dependency)
 endfunction()
 
 resolve_nanoarrow_dependency()
+
+# ----------------------------------------------------------------------
+# nlohmann-json
+
+function(resolve_nlohmann_json_dependency)
+  prepare_fetchcontent()
+
+  set(JSON_BuildTests
+      OFF
+      CACHE BOOL "" FORCE)
+
+  fetchcontent_declare(nlohmann_json
+                       ${FC_DECLARE_COMMON_OPTIONS}
+                       URL "https://github.com/nlohmann/json/releases/download/v3.11.3/json.tar.xz"
+  )
+  fetchcontent_makeavailable(nlohmann_json)
+
+  set_target_properties(nlohmann_json
+                        PROPERTIES OUTPUT_NAME "iceberg_vendored_nlohmann_json"
+                                   POSITION_INDEPENDENT_CODE ON)
+  if(MSVC_TOOLCHAIN)
+    set(NLOHMANN_NATVIS_FILE ${nlohmann_json_SOURCE_DIR}/nlohmann_json.natvis)
+    install(FILES ${NLOHMANN_NATVIS_FILE} DESTINATION .)
+  endif()
+
+  install(TARGETS nlohmann_json
+          EXPORT iceberg_targets
+          RUNTIME DESTINATION "${ICEBERG_INSTALL_BINDIR}"
+          ARCHIVE DESTINATION "${ICEBERG_INSTALL_LIBDIR}"
+          LIBRARY DESTINATION "${ICEBERG_INSTALL_LIBDIR}")
+endfunction()
+
+resolve_nlohmann_json_dependency()

src/iceberg/CMakeLists.txt

@@ -33,10 +33,14 @@ set(ICEBERG_SHARED_BUILD_INTERFACE_LIBS)
 set(ICEBERG_STATIC_INSTALL_INTERFACE_LIBS)
 set(ICEBERG_SHARED_INSTALL_INTERFACE_LIBS)
 
-list(APPEND ICEBERG_STATIC_BUILD_INTERFACE_LIBS nanoarrow::nanoarrow)
-list(APPEND ICEBERG_SHARED_BUILD_INTERFACE_LIBS nanoarrow::nanoarrow)
-list(APPEND ICEBERG_STATIC_INSTALL_INTERFACE_LIBS "Iceberg::nanoarrow")
-list(APPEND ICEBERG_SHARED_INSTALL_INTERFACE_LIBS "Iceberg::nanoarrow")
+list(APPEND ICEBERG_STATIC_BUILD_INTERFACE_LIBS nanoarrow::nanoarrow
+     nlohmann_json::nlohmann_json)
+list(APPEND ICEBERG_SHARED_BUILD_INTERFACE_LIBS nanoarrow::nanoarrow
+     nlohmann_json::nlohmann_json)
+list(APPEND ICEBERG_STATIC_INSTALL_INTERFACE_LIBS "Iceberg::nanoarrow"
+     "Iceberg::nlohmann_json")
+list(APPEND ICEBERG_SHARED_INSTALL_INTERFACE_LIBS "Iceberg::nanoarrow"
+     "Iceberg::nlohmann_json")
 
 add_iceberg_lib(iceberg
                 SOURCES

src/iceberg/arrow_c_data_internal.cc

@@ -23,6 +23,8 @@
 #include <string>
 #include <utility>
 
+#include <nlohmann/json.hpp>
+
 namespace iceberg::internal {
 
 std::pair<ArrowSchema, ArrowArray> CreateExampleArrowSchemaAndArrayByNanoarrow() {
@@ -73,4 +75,11 @@ std::pair<ArrowSchema, ArrowArray> CreateExampleArrowSchemaAndArrayByNanoarrow()
   return {out_schema, out_array};
 }
 
+void TestNlohmannJsonCompile() {
+  nlohmann::json j;
+  j["name"] = "foo";
+  j["age"] = 30;
+  j["city"] = "New York";
+}
+
 }  // namespace iceberg::internal