Implicit vector conversion for lazy actions

Author: Tae Hyoun Park

CMakeLists.txt

@@ -2,7 +2,7 @@ cmake_minimum_required(VERSION 3.14)
 
 project(queryosity)
 
-option(QUERYOSITY_INSTALL "Install target" OFF)
+option(QUERYOSITY_INSTALL "Install target" ON)
 option(QUERYOSITY_DOCS "Documentation" OFF)
 option(QUERYOSITY_EXTENSIONS "Extensions" OFF)
 option(QUERYOSITY_TESTS "Tests" OFF)

include/queryosity/lazy.h

@@ -52,6 +52,7 @@ class lazy : public dataflow::node,
   virtual ~lazy() = default;
 
   virtual std::vector<Action *> const &get_slots() const final override;
+  operator std::vector<Action *>() const;
 
   virtual void set_variation(const std::string &var_name,
                              lazy var) final override;
@@ -256,6 +257,11 @@ std::vector<Action *> const &queryosity::lazy<Action>::get_slots() const {
   return this->m_slots;
 }
 
+template <typename Action>
+queryosity::lazy<Action>::operator std::vector<Action *>() const {
+  return this->get_slots();
+}
+
 template <typename Action>
 void queryosity::lazy<Action>::set_variation(const std::string &, lazy) {
   // should never be called

include/queryosity/todo.h

@@ -125,7 +125,7 @@ class todo : public dataflow::node,
                                  queryosity::has_no_variation_v<Nodes...>,
                              bool> = false>
   auto _evaluate(Nodes const &...columns) const
-      -> lazy<column::valued<column::value_t<column::evaluated_t<V>>>> {
+      -> lazy<column::evaluated_t<V>> {
     return this->m_df->_evaluate(*this, columns...);
   }
 
@@ -134,10 +134,10 @@ class todo : public dataflow::node,
                                  queryosity::has_variation_v<Nodes...>,
                              bool> = false>
   auto _evaluate(Nodes const &...columns) const
-      -> varied<lazy<column::valued<column::value_t<column::evaluated_t<V>>>>> {
+      -> varied<lazy<column::evaluated_t<V>>> {
 
     using varied_type =
-        varied<lazy<column::valued<column::value_t<column::evaluated_t<V>>>>>;
+        varied<lazy<column::evaluated_t<V>>>;
 
     auto nom = this->m_df->_evaluate(*this, columns.nominal()...);
     auto syst = varied_type(std::move(nom));