Add 'continue' command for loops. Also enhance for() unit tests which are now breaking and need to be fixed

include/chaiscript/language/chaiscript_parser.hpp

@@ -1760,6 +1760,23 @@ namespace chaiscript
           return retval;
         }
 
+        /**
+         * Reads a continue statement from input
+         */
+        bool Continue() {
+          bool retval = false;
+
+          size_t prev_stack_top = m_match_stack.size();
+
+          if (Keyword("continue")) {
+            retval = true;
+
+            build_match(AST_NodePtr(new eval::Continue_AST_Node()), prev_stack_top);
+          }
+
+          return retval;
+        }
+
         /**
          * Reads a dot expression(member access), then proceeds to check if it's a function or array call
          */
@@ -2257,6 +2274,14 @@ namespace chaiscript
               retval = true;
               saw_eol = false;
             }
+            else if (Continue()) {
+              if (!saw_eol) {
+                throw exception::eval_error("Two expressions missing line separator", File_Position(prev_line, prev_col), *m_filename);
+              }
+              has_more = true;
+              retval = true;
+              saw_eol = false;
+            }
             else if (Equation()) {
               if (!saw_eol) {
                 throw exception::eval_error("Two expressions missing line separator", File_Position(prev_line, prev_col), *m_filename);