Enable the CppInterOp library

interpreter/CMakeLists.txt

@@ -514,3 +514,15 @@ mark_as_advanced(FORCE BUG_REPORT_URL BUILD_CLANG_FORMAT_VS_PLUGIN BUILD_SHARED_
                        C_INCLUDE_DIRS DEFAULT_SYSROOT FFI_INCLUDE_DIR FFI_LIBRARY_DIR
                        GCC_INSTALL_PREFIX LIBCLANG_BUILD_STATIC TOOL_INFO_PLIST)
 mark_as_advanced(CLEAR LLVM_ENABLE_ASSERTIONS LLVM_BUILD_TYPE)
+
+##################### LIBINTEROP ###########################
+
+#---Set InterOp include directories, for any ROOT component that requires the headers--------------------------------------------------------
+set(CPPINTEROP_INCLUDE_DIRS
+  ${CMAKE_CURRENT_SOURCE_DIR}/CppInterOp/include
+  CACHE STRING "CppInterOp include directories.")
+
+#---Set InterOp to build on Cling, this can be toggled to use Clang-REPL-------------------------------------------------------
+set(CPPINTEROP_USE_CLING ON BOOL "Use Cling as backend")
+
+add_subdirectory(CppInterOp)

interpreter/CppInterOp/.clang-format

@@ -0,0 +1,17 @@
+BasedOnStyle: LLVM
+
+Language: Cpp
+Standard: Cpp11
+PointerAlignment: Left
+
+IncludeCategories:
+  - Regex:           '^"[^/]+\"'
+    Priority:        10
+  - Regex:           '^"cling/'
+    Priority:        20
+  - Regex:           '^"clang/'
+    Priority:        30
+  - Regex:           '^"llvm/'
+    Priority:        40
+  - Regex:           '^<'
+    Priority:        50

interpreter/CppInterOp/.clang-tidy

@@ -0,0 +1,60 @@
+Checks: >
+  -*,
+  bugprone-*,
+  clang-diagnostic-*,
+  clang-analyzer-*,
+  cppcoreguidelines-*,
+  llvm-*,
+  misc-*,
+  modernize-*,
+  performance-*,
+  portability-*,
+  readability-*,
+  -bugprone-narrowing-conversions,
+  -bugprone-easily-swappable-parameters,
+  -bugprone-implicit-widening-of-multiplication-result,
+  -bugprone-unchecked-optional-access,
+  -misc-const-correctness,
+  -misc-unused-parameters,
+  -misc-non-private-member-variables-in-classes,
+  -misc-no-recursion,
+  -misc-use-anonymous-namespace,
+  -modernize-return-braced-init-list,
+  -modernize-use-trailing-return-type,
+  -readability-braces-around-statements,
+  -readability-identifier-length,
+  -readability-implicit-bool-conversion,
+  -readability-magic-numbers,
+  -readability-named-parameter,
+  -readability-function-cognitive-complexity,
+  -readability-redundant-access-specifiers,
+  -cppcoreguidelines-avoid-magic-numbers,
+  -cppcoreguidelines-init-variables,
+  -cppcoreguidelines-pro-bounds-pointer-arithmetic,
+  -cppcoreguidelines-pro-type-member-init,
+  -cppcoreguidelines-macro-usage,
+  -llvm-namespace-comment
+
+CheckOptions:
+  - key:             readability-identifier-naming.ClassCase
+    value:           aNy_CasE
+  - key:             readability-identifier-naming.FunctionCase
+    value:           aNy_CasE
+  - key:             readability-identifier-naming.MemberCase
+    value:           aNy_CasE
+  - key:             readability-identifier-naming.ParameterCase
+    value:           aNy_CasE
+  - key:             readability-identifier-naming.UnionCase
+    value:           CamelCase
+  - key:             readability-identifier-naming.VariableCase
+    value:           aNy_CasE
+  - key:             readability-identifier-naming.IgnoreMainLikeFunctions
+    value:           1
+  - key:             cppcoreguidelines-avoid-magic-numbers.IgnoreMacros
+    value:           1
+  - key:             cppcoreguidelines-pro-bounds-pointer-arithmetic.Pessimistic
+    value:           1
+  - key:             cppcoreguidelines-pro-type-member-init.InitWithEquals
+    value:           1
+  - key:             llvm-namespace-comment.Spaces
+    value:           2

interpreter/CppInterOp/.codecov.yml

@@ -0,0 +1,25 @@
+codecov:
+  require_ci_to_pass: no
+
+coverage:
+  precision: 2
+  round: down
+  range: "70...100"
+
+  status:
+    project: yes
+    patch: yes
+    changes: no
+
+parsers:
+  gcov:
+    branch_detection:
+      conditional: yes
+      loop: yes
+      method: no
+      macro: no
+
+comment:
+  layout: "reach, diff, flags, tree, files"
+  behavior: default
+  require_changes: no

interpreter/CppInterOp/.gitignore

@@ -0,0 +1,41 @@
+# Prerequisites
+*.d
+
+# Compiled Object files
+*.slo
+*.lo
+*.o
+*.obj
+
+# Precompiled Headers
+*.gch
+*.pch
+
+# Compiled Dynamic libraries
+*.so
+*.dylib
+*.dll
+
+# Compiled Static libraries
+*.lai
+*.la
+*.a
+*.lib
+
+# Executables
+*.exe
+*.out
+*.app
+
+# Directories
+build
+install
+
+# CLion files
+.idea
+
+# VSCode files
+.vscode
+
+# Default Virtual Environments
+.venv

interpreter/CppInterOp/.readthedocs.yaml

@@ -0,0 +1,16 @@
+version: 2
+
+sphinx:
+  configuration: docs/conf.py
+  builder: html
+
+build:
+  os: "ubuntu-22.04"
+  tools:
+    python: "3.11"
+  apt_packages:
+    - clang-13
+    - cmake
+    - libclang-13-dev
+    - llvm-13-dev
+    - llvm-13-tools