Fixed up annotation printing. Added help command to eval

chaiscript/main.cpp

@@ -2,6 +2,13 @@
 
 #include "chaiscript.hpp"
 
+void print_help() {
+    std::cout << "ChaiScript evaluator.  To evaluate and expression, type it and press <enter>." << std::endl;
+    std::cout << "Additionally, you can inspect the runtime system using:" << std::endl;
+    std::cout << "  dump_system() - outputs all functions registered to the system" << std::endl;
+    std::cout << "  dump_object(x) - dumps information about the given symbol" << std::endl;
+}
+
 int main(int argc, char *argv[]) {
     std::string input;
 
@@ -15,6 +22,10 @@ int main(int argc, char *argv[]) {
 
             dispatchkit::Boxed_Value val;
 
+            if (input == "help") {
+                print_help();
+            }
+            else {
                 val = chai.evaluate_string(input);
 
                 if (val.get_type_info().m_bare_type_info && *(val.get_type_info().m_bare_type_info) != typeid(void)) {
@@ -22,10 +33,12 @@ int main(int argc, char *argv[]) {
                     try {
                         dispatchkit::dispatch(chai.get_eval_engine().get_function("print"), dispatchkit::Param_List_Builder() << val);
                     } catch (const std::runtime_error &e) {
-                    //do nothing for the time being
+                        std::cout << e.what() << std::endl;
                     }
 
                 }
+            }
+
             std::cout << "eval> ";
             std::getline(std::cin, input);
         }

dispatchkit/dispatchkit.hpp

@@ -289,9 +289,7 @@ namespace dispatchkit
     std::string annotation = f.second->annotation();
 
     if (annotation.size() > 0) {
-        std::cout << "##############" << std::endl;
         std::cout << annotation;
-        std::cout << "##############" << std::endl;
     }
     dump_type(params.front(), e);
     std::cout << " " << f.first << "(";