Support for adding keywords to schedule from Python.

Adds support for adding keywords to the SCHEDULE section of the deck
after the deck has been read from file from Python.

python/cxx/deck.cpp

@@ -45,7 +45,7 @@ namespace {
 
 void python::common::export_Deck(py::module &module) {
 
-    // Note: In the below class we std::shared_ptr as the holder type, see:
+    // Note: In the below class we use std::shared_ptr as the holder type, see:
     //
     //  https://pybind11.readthedocs.io/en/stable/advanced/smart_ptrs.html
     //

python/cxx/schedule.cpp

@@ -1,7 +1,9 @@
 #include <ctime>
 #include <chrono>
 
+#include <opm/parser/eclipse/Parser/Parser.hpp>
 #include <opm/parser/eclipse/Deck/Deck.hpp>
+#include <opm/parser/eclipse/Deck/DeckKeyword.hpp>
 
 #include <opm/parser/eclipse/EclipseState/EclipseState.hpp>
 
@@ -92,13 +94,38 @@ namespace {
         return sch[index];
     }
 
+    void insert_keywords(
+        Schedule& sch,
+        const std::string& deck_string,
+        std::size_t index,
+        const UnitSystem& unit_system
+    )
+    {
+        Parser parser;
+        std::string str {unit_system.deck_name() + "\n\n" + deck_string};
+        auto deck = parser.parseString(str);
+        std::vector<DeckKeyword*> keywords;
+        for (auto &keyword : deck) {
+            keywords.push_back(&keyword);
+        }
+        sch.applyKeywords(keywords, index);
+    }
+
+    void insert_keywords(
+        Schedule& sch, py::list& deck_keywords, std::size_t index)
+    {
+        Parser parser;
+        std::vector<DeckKeyword*> keywords;
+        for (py::handle item : deck_keywords) {
+            DeckKeyword &keyword = item.cast<DeckKeyword&>();
+            keywords.push_back(&keyword);
+        }
+        sch.applyKeywords(keywords, index);
+    }
 }
 
 
 
-
-
-
 void python::common::export_Schedule(py::module& module) {
 
 
@@ -107,7 +134,7 @@ void python::common::export_Schedule(py::module& module) {
         .def("group", &get_group, ref_internal);
 
 
-    // Note: In the below class we std::shared_ptr as the holder type, see:
+    // Note: In the below class we use std::shared_ptr as the holder type, see:
     //
     //  https://pybind11.readthedocs.io/en/stable/advanced/smart_ptrs.html
     //
@@ -128,6 +155,14 @@ void python::common::export_Schedule(py::module& module) {
     .def( "get_wells", &Schedule::getWells)
     .def("well_names", py::overload_cast<const std::string&>(&Schedule::wellNames, py::const_))
     .def( "get_well", &get_well)
+    .def( "insert_keywords",
+        py::overload_cast<Schedule&, py::list&, std::size_t>(&insert_keywords),
+        py::arg("keywords"), py::arg("step"))
+    .def( "insert_keywords",
+        py::overload_cast<
+               Schedule&, const std::string&, std::size_t, const UnitSystem&
+           >(&insert_keywords),
+        py::arg("data"), py::arg("step"), py::arg("unit_system"))
     .def( "__contains__", &has_well );
 
 }