Fixed parsing variadic length C array through script eval (#12)

Previously it was working due to fallback to string conversion.

Author: Unix4ever

src/imvue_element.h

@@ -351,6 +351,23 @@ namespace ImVue {
       return true;
     }
 
+    template<class C>
+    typename std::enable_if<std::is_arithmetic<C>::value, bool>::type
+    read(Object& value, C** dest)
+    {
+      if(*dest) {
+        ImGui::MemFree(*dest);
+        *dest = NULL;
+      }
+      ImVector<C> values;
+      for(Object::iterator iter = value.begin(); iter != value.end(); ++iter) {
+        values.push_back(iter.value.as<C>());
+      }
+      *dest = (C*)ImGui::MemAlloc(values.size_in_bytes());
+      memcpy(*dest, values.Data, values.size_in_bytes());
+      return true;
+    }
+
     template<class C>
     typename std::enable_if<std::is_arithmetic<C>::value, bool>::type
     read(Object& value, C* dest)

tests/unit/parser.cpp

@@ -252,7 +252,7 @@ const char* dataBind = "<template>"
     ":i16='-32765' :i32='-65536' :i64='-1073741823' "
     ":vec2='{2,2}' :vec4='{2,2,2,2}' "
     ":ch='\"hello\"' "
-    ":arr-fixed='{1,2,3}' arr-variadic='{1,2,3,4,5}' "
+    ":arr-fixed='{1,2,3}' :arr-variadic='{1,2,3,4,5}' "
     ":float='0.1' :double='0.05' "
     ":object='{it=\"works\"}'"
     "/>"