Simple list implementation

src/executor/executor.cpp

@@ -13,6 +13,7 @@
 #include "../modules/compare/compare.h"
 #include "../modules/input/input.h"
 #include "../modules/function/function.h"
+#include "../modules/concat/concat.h"
 
 Value execute(Instruction inst) {
     // Special cases that need to manage their own argument evaluation
@@ -68,6 +69,9 @@ Value execute(Instruction inst) {
         case InstructionType::Exit:
             return modules::exit(inst.args);
             break;
+        case InstructionType::Concat:
+            return modules::concat(inst.args);
+            break;
         case InstructionType::Variable: {
             if (!inst.args.empty()) {
                 const std::string& name = inst.args[0].real;