From 2341fa0d0a060efa6b24c6d1b16b4378035d1a9f Mon Sep 17 00:00:00 2001
From: Lars Melchior <TheLartians@users.noreply.github.com>
Date: Wed, 10 Apr 2019 16:39:31 +0200
Subject: [PATCH] v0.5 (#9)

* update travis

* use CPM

* add any tests and bugfixes

* v0.5

* update CPM
---
 CMakeLists.txt                       |  4 ++--
 cmake/CPM.cmake                      |  9 ++++++---
 cmake/CPMProject.CMakeLists.cmake.in |  2 +-
 include/lars/any.h                   | 20 ++++++++++++++++++--
 tests/any.cpp                        | 22 ++++++++++++++++++++++
 5 files changed, 49 insertions(+), 8 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index d66f84e..f035810 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -4,7 +4,7 @@ cmake_minimum_required (VERSION 3.5)
 # ---- create project ----
 
 project(LarsVisitor 
-  VERSION 0.3
+  VERSION 0.5
   LANGUAGES CXX
 )
 
@@ -29,7 +29,7 @@ include(${CMAKE_CURRENT_SOURCE_DIR}/cmake/CPM.cmake)
 CPMAddPackage(
   NAME LHC
   GIT_REPOSITORY https://github.com/TheLartians/LHC.git
-  VERSION 0.3
+  VERSION 0.4
 )
 
 add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/dependencies/ctti)
diff --git a/cmake/CPM.cmake b/cmake/CPM.cmake
index 38e2342..62cd2ef 100755
--- a/cmake/CPM.cmake
+++ b/cmake/CPM.cmake
@@ -2,10 +2,12 @@ set(_CPM_Dir "${CMAKE_CURRENT_LIST_DIR}")
 
 include(CMakeParseArguments)
 include(${_CPM_Dir}/DownloadProject.cmake)
-
-function(CPMHasPackage) 
   
-endfunction()
+option(CPM_OFFLINE "CPM offline mode" OFF)
+
+if(NOT ${CPM_OFFLINE})
+  set(CPM_PACKAGES "" CACHE INTERNAL "CPM Packages")
+endif()
 
 function(CPMAddPackage)
   set(options QUIET)
@@ -16,6 +18,7 @@ function(CPMAddPackage)
     VERSION
     GIT_TAG
     BINARY_DIR
+    UPDATE_DISCONNECTED
   )
 
   set(multiValueArgs "")
diff --git a/cmake/CPMProject.CMakeLists.cmake.in b/cmake/CPMProject.CMakeLists.cmake.in
index 3bf475f..477e7dd 100755
--- a/cmake/CPMProject.CMakeLists.cmake.in
+++ b/cmake/CPMProject.CMakeLists.cmake.in
@@ -17,7 +17,7 @@ else()
     PROJ @CPM_ARGS_NAME@
     GIT_REPOSITORY @CPM_ARGS_GIT_REPOSITORY@
     GIT_TAG @CPM_ARGS_GIT_TAG@
-    UPDATE_DISCONNECTED 1
+    UPDATE_DISCONNECTED @CPM_OFFLINE@
     GIT_SHALLOW 1
     PREFIX @CPM_ARGS_BINARY_DIR@/dl
     QUIET
diff --git a/include/lars/any.h b/include/lars/any.h
index 92aea10..ec53156 100644
--- a/include/lars/any.h
+++ b/include/lars/any.h
@@ -62,7 +62,7 @@ namespace lars{
     
     TypeIndex type()const{ return _type; }
     
-    template <class T> T &get_reference(){
+    template <class T> typename std::enable_if<!std::is_same<T,Any>::value,T &>::type get_reference(){
       if(!data) throw BadAnyCast("cannot extract value: data not set.");
       struct GetVisitor:public RecursiveVisitor<VisitableScalar<T>,VisitableScalar<std::shared_ptr<T>>,T>{
         T * result = nullptr;
@@ -75,7 +75,7 @@ namespace lars{
       else throw BadAnyCast("cannot convert " + std::string(type().name().begin(),type().name().end()) + " to " + get_type_name<T>());
     }
     
-    template <class T> const T &get_reference()const{
+    template <class T> typename std::enable_if<!std::is_same<T,Any>::value,const T &>::type get_reference()const{
       if(!data) throw BadAnyCast("cannot extract value: data not set.");
       // if(type() == get_type_index<T>()) return static_cast<VisitableType<T>>(*data.get()).data;
       struct GetVisitor:public RecursiveConstVisitor<VisitableScalar<T>,VisitableScalar<std::shared_ptr<T>>,T>{
@@ -88,6 +88,14 @@ namespace lars{
       if(visitor.result) return *visitor.result;
       else throw BadAnyCast("cannot convert " + std::string(type().name().begin(),type().name().end()) + " to " + get_type_name<T>());
     }
+
+    template <class T> typename std::enable_if<std::is_same<T,Any>::value,T &>::type get_reference(){
+      return *this;
+    }
+    
+    template <class T> typename std::enable_if<std::is_same<T,Any>::value,const T &>::type get_reference()const{
+      return *this;
+    }
     
     template <class T = double> T get_numeric()const{
       struct GetVisitor:public ConstVisitor<VisitableType<float>,VisitableType<double>,VisitableType<unsigned>,VisitableType<int>,VisitableType<bool>,VisitableType<char>>{
@@ -143,6 +151,14 @@ namespace lars{
       _type = lars::get_type_index<typename T::element_type>();
     }
 
+    void set(Any && other){
+      *this = std::forward<Any>(other);
+    }
+
+    void set(const Any &other){
+      *this = other;
+    }
+
     template <class Visitor> void accept_visitor(Visitor &visitor){ assert(data); data->accept(visitor); }
     template <class ConstVisitor> void accept_visitor(ConstVisitor &visitor)const{ assert(data); data->accept(visitor); }
     
diff --git a/tests/any.cpp b/tests/any.cpp
index 441f8bf..94f8a0a 100644
--- a/tests/any.cpp
+++ b/tests/any.cpp
@@ -20,3 +20,25 @@ TEST_CASE("Any") {
   REQUIRE_THROWS_AS(any.get<std::string>(), Any::BadAnyCast);
 
 }
+
+TEST_CASE("AnyFunction") {
+  using namespace lars;
+  
+  AnyFunction get = [](){ return 42; };
+  REQUIRE(get().get<int>() == 42);
+  
+  AnyFunction getAny = [](){ return make_any<int>(42); };
+  REQUIRE(getAny().get<int>() == 42);
+
+  AnyFunction take = [](float x, float y){ return x+y; };
+  REQUIRE_THROWS(take());
+  REQUIRE_THROWS(take(2));
+  REQUIRE(take(2,3).get_numeric() == Approx(5));
+  REQUIRE(take(2,3.5).get_numeric() == Approx(5.5));
+  REQUIRE_THROWS(take(2,3,5));
+  
+  AnyFunction takeAny = [](Any x, Any y){ return x.get_numeric()+y.get_numeric(); };
+  REQUIRE(takeAny(2,3).get_numeric() == Approx(5));
+  REQUIRE(takeAny(take(2,3.5),3).get_numeric() == Approx(8.5));
+
+}