xo-expression: + ConvertExpr

src/expression/CMakeLists.txt

@@ -9,6 +9,7 @@ set(SELF_SRCS
     Variable.cpp
     IfExpr.cpp
     LocalEnv.cpp
+    ConvertExpr.cpp
 )
 
 xo_add_shared_library4(${SELF_LIB} ${PROJECT_NAME}Targets ${PROJECT_VERSION} 1 ${SELF_SRCS})

src/expression/ConvertExpr.cpp

@@ -0,0 +1,53 @@
+/* file ConvertExpr.cpp
+ *
+ * author: Roland Conybeare
+ */
+
+#include "ConvertExpr.hpp"
+
+namespace xo {
+    namespace ast {
+        rp<ConvertExpr>
+        ConvertExpr::make(TypeDescr dest_type,
+                          rp<Expression> arg)
+        {
+            return new ConvertExpr(dest_type,
+                                   std::move(arg));
+        }
+
+        std::set<std::string>
+        ConvertExpr::get_free_variables() const {
+            if (this->arg_)
+                return this->arg_->get_free_variables();
+            else
+                return std::set<std::string>();
+        }
+
+        void
+        ConvertExpr::display(std::ostream & os) const {
+            os << "<Convert"
+               << xtag("dest_type", this->valuetype()->short_name())
+               << xtag("arg", arg_)
+               << ">";
+        }
+
+        // ----- ConvertExprAccess -----
+
+        rp<ConvertExprAccess>
+        ConvertExprAccess::make(TypeDescr dest_type,
+                                rp<Expression> arg)
+        {
+            return new ConvertExprAccess(dest_type,
+                                         std::move(arg));
+        }
+
+        rp<ConvertExprAccess>
+        ConvertExprAccess::make_empty() {
+            return new ConvertExprAccess(nullptr /*dest_type*/,
+                                         nullptr /*arg*/);
+        }
+    } /*namespace ast*/
+} /*namespace xo*/
+
+
+/* end ConvertExpr.cpp */