Update property page to something more in line with normal boost installs.

CMakeLists.txt

@@ -2,23 +2,43 @@ cmake_minimum_required(VERSION 2.6)
 
 project(chaiscript)
 
-SET (CMAKE_BUILD_TYPE gdb)
-SET (CMAKE_C_FLAGS_GDB " -Wall -ggdb")
-SET (CMAKE_CXX_FLAGS_GDB " -Wall -ggdb")
+FIND_LIBRARY(READLINE_LIBRARY NAMES readline PATH /usr/lib /usr/local/lib /opt/local/lib)
 
-#SET (CMAKE_BUILD_TYPE rel)
-#SET (CMAKE_C_FLAGS_REL " -Wall -O3")
-#SET (CMAKE_CXX_FLAGS_REL " -Wall -O3")
+MESSAGE(STATUS "Detecting readline support")
+if (READLINE_LIBRARY)
+    MESSAGE(STATUS "Found: ${READLINE_LIBRARY}")
+    SET (READLINE_LIB readline)
+    SET (READLINE_FLAG " -DREADLINE_AVAILABLE")
+else(READLINE_LIBRARY)
+    MESSAGE(STATUS "Not Found")
+    SET (READLINE_LIB )
+    SET (READLINE_FLAG )
+endif(READLINE_LIBRARY)
+
+SET (CMAKE_C_FLAGS_REL " -Wall -O3 ${READLINE_FLAG}")
+SET (CMAKE_CXX_FLAGS_REL " -Wall -O3 ${READLINE_FLAG}")
+
+SET (CMAKE_C_FLAGS " -Wall -ggdb ${READLINE_FLAG}")
+SET (CMAKE_CXX_FLAGS " -Wall -ggdb ${READLINE_FLAG}")
 
 include_directories(include)
  
-find_package(Boost 1.36.0)
+find_package(Boost 1.36.0 COMPONENTS thread)
+
 if (Boost_FOUND)
 	include_directories(${Boost_INCLUDE_DIRS})
 	add_executable(chaiscript_eval src/main.cpp)
 	#add_executable(dispatchkit_test contrib/test/dispatchkit_test.cpp)
-	target_link_libraries(chaiscript_eval ${Boost_LIBRARIES})
+	target_link_libraries(chaiscript_eval dl ${Boost_LIBRARIES} ${READLINE_LIB})
+
+        add_library(test MODULE src/test_module.cpp)
+	target_link_libraries(test ${Boost_LIBRARIES})
+
+        add_library(stl_extra MODULE src/stl_extra.cpp)
+	target_link_libraries(stl_extra ${Boost_LIBRARIES})
+
 	install(TARGETS chaiscript_eval DESTINATION ${CMAKE_CURRENT_SOURCE_DIR}/bin)
+        
 else(Boost_FOUND)
         message(FATAL_ERROR "Can not find Boost")
 endif(Boost_FOUND)

contrib/codeanalysis/analyzedata.sh

@@ -0,0 +1,43 @@
+
+function analyze_data
+{
+  echo -n "$1," >> $2
+  awk 'END {printf "%s,", $1}' r$1-codesize.out >> $2
+  awk '{printf "%s,", $1}' r$1-numunittests.out >> $2
+  awk 'END {printf "%s,", $1}' r$1-unittestsoutput.out >> $2
+
+  awk '{printf "%s,", $1}' r$1-debugbinarysize.out  >> $2
+  awk 'NR>1{exit} 1 {printf "%s,", $2}' r$1-debugbuildtime.out >> $2
+  awk 'NR>1{exit} 1 {printf "%s,", $2}' r$1-debugprofiletime.out >> $2
+
+  awk '{printf "%s,", $1}' r$1-releasebinarysize.out  >> $2
+  awk 'NR>1{exit} 1 {printf "%s,", $2}' r$1-releasebuildtime.out >> $2
+  awk 'NR>1{exit} 1 {printf "%s,", $2}' r$1-releasemodulesbuildtime.out >> $2
+  awk 'NR>1{exit} 1 {printf "%s,", $2}' r$1-releaseprofiletime.out >> $2
+  awk 'NR>1{exit} 1 {printf "%s,", $2}' r$1-releaseunittestruntime.out >> $2
+
+  if [ -x r$1-threadfreebinarysize.out ]
+  then
+    awk '{printf "%s,", $1}' r$1-threadfreebinarysize.out  >> $2
+    awk 'NR>1{exit} 1 {printf "%s,", $2}' r$1-threadfreeprofiletime.out >> $2
+
+    awk 'NR>1{exit} 1 {printf "%s,", $2}' r$1-1threadruntime.out >> $2
+    awk 'NR>1{exit} 1 {printf "%s,", $2}' r$1-2threadruntime.out >> $2
+    awk 'NR>1{exit} 1 {printf "%s,", $2}' r$1-4threadruntime.out >> $2
+    awk 'NR>1{exit} 1 {printf "%s,", $2}' r$1-8threadruntime.out >> $2
+  else
+    echo -n ",,,,,," >> $2
+  fi
+
+  awk -F "\n" 'NR>1{exit} 1 {printf "\"%s\"\n", $1}' r$1-revisionlog.out >> $2
+}
+
+
+filename=output-$1-$2.csv
+
+echo "Revision, LOC, Num Unit Tests, Successful Unit Tests, Debug Binary Size, Debug Build Time, Debug Profile Time, Release Binary Size, Release Core Build Time, Release Modules Build Time, Release Profile Time, Release Unit Tests Time, Threadless Binary Size, Threadless Profile Time, 1 Thread Profile Time, 2 Threads Profile Time, 4 Threads Profile Time, 8 Threads Profile Time, Revision Log" > $filename
+
+for i in `seq $1 $2` 
+do
+  analyze_data $i $filename
+done

contrib/codeanalysis/codeanalysis.sh

@@ -0,0 +1,81 @@
+
+function run_test
+{
+  echo "****Getting r$1 from SVN"
+  svn export --quiet -r$1 http://chaiscript.googlecode.com/svn/trunk chaiscript-r$1
+
+  pushd chaiscript-r$1
+
+  echo "****Getting svn revision log"
+  svn propget svn:log --revprop -r$1  http://chaiscript.googlecode.com/svn/trunk > ../r$1-revisionlog.out
+
+  echo "****Editing CMakeLists.txt to allow for build type switching"
+  # Clean up CMakeLists.txt so that we can set the build type at configure time
+  sed -i -e "s/SET (CMAKE_BUILD_TYPE.*//"  CMakeLists.txt
+
+  echo "****Compiling Debug Build"
+  cmake -D CMAKE_BUILD_TYPE=Debug CMakeLists.txt
+  /usr/bin/time -p make chaiscript_eval 2> ../r$1-debugbuildtime.out
+
+  echo "****Analyzing Debug Build"
+  /usr/bin/time -p ./chaiscript_eval ../profile.chai 2>../r$1-debugprofiletime.out
+  ls -s --block-size=1 ./chaiscript_eval > ../r$1-debugbinarysize.out
+
+  make clean
+
+  echo "****Compiling Release Build"
+  cmake -D CMAKE_BUILD_TYPE=Release CMakeLists.txt
+  /usr/bin/time -p make chaiscript_eval 2> ../r$1-releasebuildtime.out
+
+  echo "****Analyzing Release Build"
+  /usr/bin/time -p ./chaiscript_eval ../profile.chai 2>../r$1-releaseprofiletime.out
+  ls -s --block-size=1 ./chaiscript_eval > ../r$1-releasebinarysize.out
+
+  echo "****Analyzing Code Size"
+  find ./include -name "*.hpp" | xargs wc > ../r$1-codesize.out
+
+  echo "****Building Remaining Modules"
+  /usr/bin/time -p make 2> ../r$1-releasemodulesbuildtime.out
+
+  echo "****Running unit tests"
+  /usr/bin/time -p ./run_unit_tests.sh 2> ../r$1-releaseunittestruntime.out > ../r$1-unittestsoutput.out
+
+  echo "****Counting number of unit tests"
+  find unittests/ -name "*.chai" | wc | awk '{print $1}' > ../r$1-numunittests.out
+
+
+  echo "****Running multithreaded tests"
+  if [ -e src/multithreaded.cpp ]
+  then
+    # Run multithreaded tests
+    echo "****Building multithreaded test"
+    pushd src
+    g++ multithreaded.cpp -lboost_thread-mt -ldl -omultithreaded -I../include -O3
+    echo "****Testing 1 thread runtime"
+    /usr/bin/time -p ./multithreaded 1 2> ../../r$1-1threadruntime.out
+    echo "****Testing 2 thread runtime"
+    /usr/bin/time -p ./multithreaded 1 1 2> ../../r$1-2threadruntime.out
+    echo "****Testing 4 thread runtime"
+    /usr/bin/time -p ./multithreaded 1 1 1 1 2> ../../r$1-4threadruntime.out
+    echo "****Testing 8 thread runtime"
+    /usr/bin/time -p ./multithreaded 1 1 1 1 1 1 1 1 2> ../../r$1-8threadruntime.out
+
+
+    echo "****Compiling thread-free version"
+    g++ main.cpp -ldl -othreadfree -I../include -O3 -DCHAISCRIPT_NO_THREADS
+    echo "****Analyzing thread-free version"
+    /usr/bin/time -p ./threadfree ../../profile.chai 2>../../r$1-threadfreeprofiletime.out
+    ls -s --block-size=1 ./threadfree > ../../r$1-threadfreebinarysize.out
+
+    popd
+  else
+    echo "Multithreaded test non-existent"
+  fi
+
+  popd
+}
+
+for i in `seq $1 $2` 
+do
+  run_test $i
+done

contrib/codeanalysis/profile.chai

@@ -0,0 +1,15 @@
+var total = 0
+ 
+for (var i = 0.0; i < 10000.0; i += 0.1) {
+  total += int(double(i) + int(10));
+  if (i < 9000.0)
+  {
+    total += double(11);
+    if (i > double(4000.0))
+    {
+      total += double(10);
+    }
+  }
+}
+ 
+print(total)

include/chaiscript/chaiscript.hpp

@@ -21,26 +21,41 @@
 #include "dispatchkit/bootstrap.hpp"
 #include "dispatchkit/bootstrap_stl.hpp"
 #include "dispatchkit/function_call.hpp"
+#include "dispatchkit/dynamic_object.hpp"
+
+#ifdef  BOOST_HAS_DECLSPEC
+#define CHAISCRIPT_MODULE_EXPORT extern "C" __declspec(dllexport)
+#else
+#define CHAISCRIPT_MODULE_EXPORT extern "C" 
+#endif
+
+
+
 namespace chaiscript
 {
+    typedef ModulePtr (*Create_Module_Func)();
+
     /**
      * Types of AST nodes available to the parser and eval
      */
-    class Token_Type { public: enum Type { Error, Int, Float, Id, Char, Str, Eol, Fun_Call, Arg_List, Variable, Equation, Var_Decl,
+    class Token_Type { public: enum Type { Error, Int, Float, Id, Char, Str, Eol, Fun_Call, Inplace_Fun_Call, Arg_List, Variable, Equation, Var_Decl,
         Expression, Comparison, Additive, Multiplicative, Negate, Not, Array_Call, Dot_Access, Quoted_String, Single_Quoted_String,
         Lambda, Block, Def, While, If, For, Inline_Array, Inline_Map, Return, File, Prefix, Break, Map_Pair, Value_Range,
-        Inline_Range, Annotation }; };
+        Inline_Range, Annotation, Try, Catch, Finally, Method, Attr_Decl }; };
 
-    /**
-     * Helper lookup to get the name of each node type
-     */
-    const char *token_type_to_string(int tokentype) {
-        const char *token_types[] = { "Internal Parser Error", "Int", "Float", "Id", "Char", "Str", "Eol", "Fun_Call", "Arg_List", "Variable", "Equation", "Var_Decl",
-            "Expression", "Comparison", "Additive", "Multiplicative", "Negate", "Not", "Array_Call", "Dot_Access", "Quoted_String", "Single_Quoted_String",
-            "Lambda", "Block", "Def", "While", "If", "For", "Inline_Array", "Inline_Map", "Return", "File", "Prefix", "Break", "Map_Pair", "Value_Range",
-            "Inline_Range", "Annotation"};
+    namespace 
+    {
+      /**
+       * Helper lookup to get the name of each node type
+       */
+      const char *token_type_to_string(int tokentype) {
+        const char *token_types[] = { "Internal Parser Error", "Int", "Float", "Id", "Char", "Str", "Eol", "Fun_Call", "Inplace_Fun_Call", "Arg_List", "Variable", "Equation", "Var_Decl",
+          "Expression", "Comparison", "Additive", "Multiplicative", "Negate", "Not", "Array_Call", "Dot_Access", "Quoted_String", "Single_Quoted_String",
+          "Lambda", "Block", "Def", "While", "If", "For", "Inline_Array", "Inline_Map", "Return", "File", "Prefix", "Break", "Map_Pair", "Value_Range",
+          "Inline_Range", "Annotation", "Try", "Catch", "Finally", "Method", "Attr_Decl"};
 
         return token_types[tokentype];
+      }
     }
 
     /**
@@ -66,14 +81,17 @@ namespace chaiscript
         int identifier;
         const char *filename;
         File_Position start, end;
+        bool is_cached;
+        Boxed_Value cached_value;
 
         std::vector<TokenPtr> children;
         TokenPtr annotation;
 
-        Token(const std::string &token_text, int id, const char *fname) : text(token_text), identifier(id), filename(fname) { }
+        Token(const std::string &token_text, int id, const char *fname) :
+            text(token_text), identifier(id), filename(fname), is_cached(false) { }
 
         Token(const std::string &token_text, int id, const char *fname, int start_line, int start_col, int end_line, int end_col) :
-            text(token_text), identifier(id), filename(fname) {
+            text(token_text), identifier(id), filename(fname), is_cached(false) {
 
             start.line = start_line;
             start.column = start_col;

include/chaiscript/chaiscript_threading.hpp

@@ -0,0 +1,73 @@
+#ifndef __chaiscript_threading_hpp__
+#define __chaiscript_threading_hpp__
+
+#ifndef CHAISCRIPT_NO_THREADS
+#include <boost/thread.hpp>
+#else
+#warning "ChaiScript is compiling without thread safety."
+#endif
+
+namespace chaiscript
+{
+  namespace threading
+  {
+
+#ifndef CHAISCRIPT_NO_THREADS
+
+    template<typename T>
+      class Thread_Storage
+      {
+        public:
+          ~Thread_Storage()
+          {
+            m_thread_storage.reset();
+          }
+
+          inline T *operator->() const
+          {
+            if (!m_thread_storage.get())
+            {
+              m_thread_storage.reset(new T());
+            }
+
+            return m_thread_storage.get();
+          }
+
+          inline T &operator*() const
+          {
+            return *(this->operator->());
+          }
+
+        private:
+          mutable boost::thread_specific_ptr<T> m_thread_storage;
+      };
+
+#else
+
+    template<typename T>
+      class Thread_Storage
+      {
+        public:
+          inline T *operator->() const
+          {
+            return &obj;
+          }
+
+          inline T &operator*() const
+          {
+            return obj;
+          }
+
+        private:
+          mutable T obj;
+      };
+
+#endif
+
+  }
+}
+
+
+
+#endif
+

include/chaiscript/dispatchkit/bootstrap.hpp

@@ -8,6 +8,7 @@
 #define __bootstrap_hpp__
 
 #include "dispatchkit.hpp"
+#include "dynamic_object.hpp"
 #include "register_function.hpp"
 
 namespace chaiscript 
@@ -482,18 +483,6 @@ namespace chaiscript
       return boost::lexical_cast<std::string>(i);
     }
 
-    /**
-    * Boolean specialization of internal to_string function 
-    */
-    template<> std::string to_string(bool b)
-    {
-      if (b)
-      {
-        return "true";
-      } else {
-        return "false";
-      }
-    }
 
     /**
     * Internal function for converting from a string to a value
@@ -532,22 +521,39 @@ namespace chaiscript
     * function variables.
     */
     template<typename Type>
-    boost::shared_ptr<Type> shared_ptr_clone(boost::shared_ptr<Type> f)
+    boost::shared_ptr<Type> shared_ptr_clone(const boost::shared_ptr<Type> &p)
     {
-      return f;
+      return p;
     }
 
+    /**
+     * Specific version of shared_ptr_clone just for Proxy_Functions
+     */
+    template<typename Type>
+    boost::shared_ptr<typename boost::remove_const<Type>::type> 
+        shared_ptr_unconst_clone(const boost::shared_ptr<typename boost::add_const<Type>::type> &p)
+    {
+      return boost::const_pointer_cast<typename boost::remove_const<Type>::type>(p);
+    }
+
+
+
     /**
     * Assignment function for shared_ptr objects, does not perform a copy of the
     * object pointed to, instead maintains the shared_ptr concept.
     * Similar to shared_ptr_clone. Used for Proxy_Function.
     */
     template<typename Type>
-    Boxed_Value ptr_assign(Boxed_Value lhs, boost::shared_ptr<Type> rhs)
+    Boxed_Value ptr_assign(Boxed_Value lhs, const boost::shared_ptr<typename boost::add_const<Type>::type> &rhs)
     {
-      lhs.assign(Boxed_Value(rhs));
-
-      return lhs;
+      if (lhs.is_unknown() 
+          || (!lhs.get_type_info().is_const() && lhs.get_type_info().bare_equal(chaiscript::detail::Get_Type_Info<Type>::get())))
+      {
+        lhs.assign(Boxed_Value(rhs));
+        return lhs;
+      } else {
+        throw bad_boxed_cast("type mismatch in pointer assignment");
+      }
     }
 
     /**
@@ -616,9 +622,9 @@ namespace chaiscript
           throw arity_error(params.size(), 2);
         }
 
-        Proxy_Function f = boxed_cast<Proxy_Function >(params[0]);
+        Const_Proxy_Function f = boxed_cast<Const_Proxy_Function>(params[0]);
 
-        return Boxed_Value(Proxy_Function(new Bound_Function(f,
+        return Boxed_Value(Const_Proxy_Function(new Bound_Function(f,
           std::vector<Boxed_Value>(params.begin() + 1, params.end()))));
       }
 
@@ -633,17 +639,39 @@ namespace chaiscript
           throw arity_error(params.size(), 1);
         }
 
-        Proxy_Function f = boxed_cast<Proxy_Function >(params[0]);
+        Const_Proxy_Function f = boxed_cast<Const_Proxy_Function>(params[0]);
 
         return Boxed_Value(f->call_match(std::vector<Boxed_Value>(params.begin() + 1, params.end())));
       }
 
+      static void throw_exception(const Boxed_Value &bv) {
+        throw bv;
+      }
+      
       static boost::shared_ptr<Dispatch_Engine> bootstrap2(boost::shared_ptr<Dispatch_Engine> e = boost::shared_ptr<Dispatch_Engine> (new Dispatch_Engine()))
       {
         e->add(user_type<void>(), "void");
         return e;
       }
 
+      static std::string what(const std::exception &e)
+      {
+        return e.what();
+      }
+
+      /**
+       * Boolean specialization of internal to_string function 
+       */
+      static std::string bool_to_string(bool b)
+      {
+        if (b)
+        {
+          return "true";
+        } else {
+          return "false";
+        }
+      }
+
     public:
       /**
       * perform all common bootstrap functions for std::string, void and POD types
@@ -655,14 +683,29 @@ namespace chaiscript
         m->add(user_type<Boxed_Value>(), "Object");
         m->add(user_type<Boxed_POD_Value>(), "PODObject");
         m->add(user_type<Proxy_Function>(), "function");
+        m->add(user_type<std::exception>(), "exception");
+
+        m->add(user_type<std::runtime_error>(), "runtime_error");
+        m->add(constructor<std::runtime_error (const std::string &)>(), "runtime_error");
+        m->add(fun(boost::function<std::string (const std::runtime_error &)>(&what)), "what");     
+
+        m->add(user_type<Dynamic_Object>(), "Dynamic_Object");
+        m->add(constructor<Dynamic_Object (const std::string &)>(), "Dynamic_Object");
+        m->add(fun(&Dynamic_Object::get_type_name), "get_type_name");
+        m->add(fun(&Dynamic_Object::get_attrs), "get_attrs");
+        m->add(fun(&Dynamic_Object::get_attr), "get_attr");
+        m->eval("def Dynamic_Object::clone() { var new_o := Dynamic_Object(this.get_type_name()); for_each(this.get_attrs(), bind(fun(new_o, x) { new_o.get_attr(x.first) = x.second; }, new_o, _) ); return new_o; }");
+
 
         basic_constructors<bool>("bool", m);
         oper_assign<std::string>(m);
         oper_assign<bool>(m);
 
         m->add(fun(&to_string<const std::string &>), "internal_to_string");
-        m->add(fun(&to_string<bool>), "internal_to_string");
+        m->add(fun(&Bootstrap::bool_to_string), "internal_to_string");
         m->add(fun(&unknown_assign), "=");
+        m->add(fun(&throw_exception), "throw");
+        m->add(fun(&what), "what");
 
         bootstrap_pod_type<double>("double", m);
         bootstrap_pod_type<int>("int", m);
@@ -681,7 +724,7 @@ namespace chaiscript
         m->add(Proxy_Function(new Dynamic_Proxy_Function(boost::bind(&bind_function, _1))), 
           "bind");
 
-        m->add(fun(&shared_ptr_clone<Proxy_Function_Base>), "clone");
+        m->add(fun(&shared_ptr_unconst_clone<Proxy_Function_Base>), "clone");
         m->add(fun(&ptr_assign<Proxy_Function_Base>), "=");
 
         m->add(Proxy_Function(new Dynamic_Proxy_Function(boost::bind(&call_exists, _1))), 

include/chaiscript/dispatchkit/bootstrap_stl.hpp

@@ -36,16 +36,6 @@ namespace chaiscript
       {
       }
 
-      Bidir_Range(typename Container::iterator itr)
-        : m_begin(itr), m_end(itr)
-      {
-      }
-
-      Bidir_Range(const std::pair<typename Container::iterator, typename Container::iterator> &t_p)
-        : m_begin(t_p.first), m_end(t_p.second)
-      {
-      }
-
       bool empty() const
       {
         return m_begin == m_end;
@@ -118,20 +108,10 @@ namespace chaiscript
     ModulePtr input_range_type(const std::string &type, ModulePtr m = ModulePtr(new Module()))
     {
       m->add(user_type<Bidir_Range<ContainerType> >(), type + "_Range");
-      m->add(user_type<Retro<Bidir_Range<ContainerType> > >(), type + "_Retro_Range");
-      m->add(user_type<typename ContainerType::iterator>(), type+"_Iterator");
 
       copy_constructor<Bidir_Range<ContainerType> >(type + "_Range", m);
-      copy_constructor<Retro<Bidir_Range<ContainerType> > >(type + "_Retro_Range", m);
 
       m->add(constructor<Bidir_Range<ContainerType> (ContainerType &)>(), "range");
-      m->add(constructor<Bidir_Range<ContainerType> (typename ContainerType::iterator)>(), "range");
-
-      typedef std::pair<typename ContainerType::iterator, typename ContainerType::iterator> ItrPair;
-
-      m->add(constructor<Bidir_Range<ContainerType> (const ItrPair &)>(), "range");
-
-      m->add(user_type<ItrPair>(), type+"_Iterator_Pair");
 
       m->add(fun(&Bidir_Range<ContainerType>::empty), "empty");
       m->add(fun(&Bidir_Range<ContainerType>::pop_front), "pop_front");
@@ -139,16 +119,6 @@ namespace chaiscript
       m->add(fun(&Bidir_Range<ContainerType>::pop_back), "pop_back");
       m->add(fun(&Bidir_Range<ContainerType>::back), "back");
 
-      m->add(fun(&Retro<Bidir_Range<ContainerType> >::empty), "empty");
-      m->add(fun(&Retro<Bidir_Range<ContainerType> >::pop_front), "pop_front");
-      m->add(fun(&Retro<Bidir_Range<ContainerType> >::front), "front");
-      m->add(fun(&Retro<Bidir_Range<ContainerType> >::pop_back), "pop_back");
-      m->add(fun(&Retro<Bidir_Range<ContainerType> >::back), "back");
-
-      m->add(constructor<Retro<Bidir_Range<ContainerType> > (const Bidir_Range<ContainerType> &)>(), "retro");
-
-
-
       return m;
     } 
 
@@ -175,9 +145,7 @@ namespace chaiscript
       //In the interest of runtime safety for the m, we prefer the at() method for [] access,
       //to throw an exception in an out of bounds condition.
       m->add(
-        fun(boost::function<typename ContainerType::reference (ContainerType *, int)>(indexoper(&ContainerType::at))), "[]");
-      m->add(
-        fun(boost::function<typename ContainerType::reference (ContainerType *, int)>(indexoper(&ContainerType::operator[]))), "at");
+        fun(boost::function<typename ContainerType::reference (ContainerType *, int)>(static_cast<indexoper>(&ContainerType::at))), "[]");
 
       return m;
     }
@@ -204,7 +172,6 @@ namespace chaiscript
       assignable_type<ContainerType>(type, m);
 
       m->add(fun<size_t (ContainerType::*)() const>(&ContainerType::size), "size");
-      m->add(fun<size_t (ContainerType::*)() const>(&ContainerType::max_size), "max_size");
       m->add(fun<bool (ContainerType::*)() const>(&ContainerType::empty), "empty");
       m->add(fun<void (ContainerType::*)()>(&ContainerType::clear), "clear");
 
@@ -307,7 +274,7 @@ namespace chaiscript
 
       typedef typename ContainerType::reference (ContainerType::*backptr)();
 
-      m->add(fun(backptr(&ContainerType::back)), "back");
+      m->add(fun(static_cast<backptr>(&ContainerType::back)), "back");
 
       std::string push_back_name;
       if (typeid(typename ContainerType::value_type) == typeid(Boxed_Value))
@@ -322,6 +289,45 @@ namespace chaiscript
       return m;
     }
 
+
+    /**
+     *Front insertion sequence
+     *http://www.sgi.com/tech/stl/FrontInsertionSequence.html
+     */
+    template<typename ContainerType>
+    ModulePtr front_insertion_sequence_type(const std::string &type, ModulePtr m = ModulePtr(new Module()))
+    {
+      sequence_type<ContainerType>(type, m);
+
+      typedef typename ContainerType::reference (ContainerType::*frontptr)();
+
+      m->add(fun(static_cast<frontptr>(&ContainerType::front)), "front");
+
+      std::string push_front_name;
+      if (typeid(typename ContainerType::value_type) == typeid(Boxed_Value))
+      {
+        push_front_name = "push_front_ref";
+      } else {
+        push_front_name = "push_front";
+      }
+      m->add(fun(&ContainerType::push_front), push_front_name);
+      m->add(fun(&ContainerType::pop_front), "pop_front");
+      return m;
+    }
+
+    /**
+     * hopefully working List type
+     * http://www.sgi.com/tech/stl/List.html
+     */
+    template<typename ListType>
+    ModulePtr list_type(const std::string &type, ModulePtr m = ModulePtr(new Module()))
+    {
+      m->add(user_type<ListType>(), type);
+      front_insertion_sequence_type<ListType>(type, m);
+      back_insertion_sequence_type<ListType>(type, m);
+      return m;
+    }
+
     /**
     * Create a vector type with associated concepts
     * http://www.sgi.com/tech/stl/Vector.html
@@ -404,7 +410,6 @@ namespace chaiscript
 
       reversible_container_type<ContainerType>(type, m);
       associative_container_type<ContainerType>(type, m);
-      m->add(fun(eq_range(&ContainerType::equal_range)), "equal_range");
 
       return m;
     }
@@ -462,12 +467,12 @@ namespace chaiscript
       m->add(fun(&String::push_back), push_back_name);
 
       typedef typename String::size_type (String::*find_func)(const String &, typename String::size_type) const;
-      m->add(fun(find_func(&String::find)), "find");
-      m->add(fun(find_func(&String::rfind)), "rfind");
-      m->add(fun(find_func(&String::find_first_of)), "find_first_of");
-      m->add(fun(find_func(&String::find_last_of)), "find_last_of");
-      m->add(fun(find_func(&String::find_first_not_of)), "find_first_not_of");
-      m->add(fun(find_func(&String::find_last_not_of)), "find_last_not_of");
+      m->add(fun(static_cast<find_func>(&String::find)), "find");
+      m->add(fun(static_cast<find_func>(&String::rfind)), "rfind");
+      m->add(fun(static_cast<find_func>(&String::find_first_of)), "find_first_of");
+      m->add(fun(static_cast<find_func>(&String::find_last_of)), "find_last_of");
+      m->add(fun(static_cast<find_func>(&String::find_first_not_of)), "find_first_not_of");
+      m->add(fun(static_cast<find_func>(&String::find_last_not_of)), "find_last_not_of");
 
       return m;
     }

include/chaiscript/dispatchkit/boxed_value.hpp

@@ -8,6 +8,7 @@
 #define __boxed_value_hpp__
 
 #include "type_info.hpp"
+#include "../chaiscript_threading.hpp"
 #include <map>
 #include <boost/shared_ptr.hpp>
 #include <boost/any.hpp>
@@ -134,6 +135,8 @@ namespace chaiscript
         template<typename T>
           boost::shared_ptr<Data> get(const boost::shared_ptr<T> &obj)
           {
+            bool b_const = boost::is_const<T>::value; 
+
             boost::shared_ptr<Data> data(new Data(
                   detail::Get_Type_Info<T>::get(), 
                   boost::any(obj), 
@@ -141,14 +144,14 @@ namespace chaiscript
                   boost::shared_ptr<Data::Shared_Ptr_Proxy>(new Data::Shared_Ptr_Proxy_Impl<T>()))
                 );
 
-            std::map<const void *, Data>::iterator itr
-              = m_ptrs.find(obj.get());
+            std::map<std::pair<const void *, bool>, Data>::iterator itr
+              = m_ptrs.find(std::make_pair(obj.get(), b_const));
 
             if (itr != m_ptrs.end())
             {
               (*data) = (itr->second);
             } else {
-              m_ptrs.insert(std::make_pair(obj.get(), *data));
+              m_ptrs.insert(std::make_pair(std::make_pair(obj.get(), b_const), *data));
             }
 
             return data;
@@ -163,14 +166,16 @@ namespace chaiscript
         template<typename T>
           boost::shared_ptr<Data> get(boost::reference_wrapper<T> obj)
           {
+            bool b_const = boost::is_const<T>::value; 
+
             boost::shared_ptr<Data> data(new Data(
                   detail::Get_Type_Info<T>::get(),
                   boost::any(obj), 
                   true)
                 );
 
-            std::map<const void *, Data >::iterator itr
-              = m_ptrs.find(obj.get_pointer());
+            std::map<std::pair<const void *, bool>, Data >::iterator itr
+              = m_ptrs.find(std::make_pair(obj.get_pointer(), b_const) );
 
             // If the ptr is found in the cache and it is the correct type,
             // return it. It may be the incorrect type when two variables share the
@@ -180,7 +185,7 @@ namespace chaiscript
             // Both t and t.x share the same memory location, but do not represent
             // objects of the same type.
             if (itr != m_ptrs.end() 
-                && itr->second.m_type_info.m_bare_type_info == data->m_type_info.m_bare_type_info)
+                && itr->second.m_type_info.bare_equal(data->m_type_info))
             {
               (*data) = (itr->second);
             } 
@@ -200,7 +205,7 @@ namespace chaiscript
 
             boost::shared_ptr<T> *ptr = boost::any_cast<boost::shared_ptr<T> >(&data->m_obj);
 
-            m_ptrs.insert(std::make_pair(ptr->get(), *data));
+            m_ptrs.insert(std::make_pair(std::make_pair(ptr->get(), false), *data));
             return data;
           }
 
@@ -217,21 +222,23 @@ namespace chaiscript
          * Drop objects from the cache where there is only one (ie, our)
          * reference to it, so it may be destructed
          */
-        void cull()
+        void cull(bool force = false)
         {
+          
           ++m_cullcount;
-          if (m_cullcount % 10 != 0)
+          if (force || m_cullcount % 10 != 0)
           {
             return;
           }
 
-          std::map<const void *, Data >::iterator itr = m_ptrs.begin();
+
+          std::map<std::pair<const void *, bool>, Data>::iterator itr = m_ptrs.begin();
 
           while (itr != m_ptrs.end())
           {
             if (itr->second.m_ptr_proxy->unique(&itr->second.m_obj) == 1)
             {
-              std::map<const void *, Data >::iterator todel = itr;
+              std::map<std::pair<const void *, bool>, Data >::iterator todel = itr;
               ++itr;
               m_ptrs.erase(todel);
             } else {
@@ -240,7 +247,7 @@ namespace chaiscript
           }
         }
 
-        std::map<const void *, Data > m_ptrs;
+        std::map<std::pair<const void *, bool>, Data > m_ptrs;
         int m_cullcount;
       };
 
@@ -278,11 +285,16 @@ namespace chaiscript
       /**
        * Return a reference to the static global Object_Cache
        */
-      Object_Cache &get_object_cache()
+      static Object_Cache &get_object_cache()
       {
-        static Object_Cache oc;
-        return oc;
-      }    
+        static chaiscript::threading::Thread_Storage<Object_Cache> oc;
+        return *oc;
+      }   
+
+      static void clear_cache()
+      {
+        get_object_cache().m_ptrs.clear();
+      }
 
       /**
        * copy the values stored in rhs.m_data to m_data
@@ -313,7 +325,7 @@ namespace chaiscript
        */
       bool is_unknown() const
       {
-        return m_data->m_type_info.m_is_unknown;
+        return m_data->m_type_info.is_unknown();
       }
 
       boost::any get() const
@@ -347,14 +359,19 @@ namespace chaiscript
         {
           if (ob.is_ref())
           {
-            if (!ob.get_type_info().m_is_const)
+            if (!ob.get_type_info().is_const())
             {
               return boost::cref((boost::any_cast<boost::reference_wrapper<Result> >(ob.get())).get());
             } else {
               return boost::any_cast<boost::reference_wrapper<const Result> >(ob.get());
             }
           } else {
-            return boost::cref(*(boost::any_cast<boost::shared_ptr<Result> >(ob.get())));   
+            if (!ob.get_type_info().is_const())
+            {
+              return boost::cref(*(boost::any_cast<boost::shared_ptr<Result> >(ob.get())));   
+            } else {
+              return boost::cref(*(boost::any_cast<boost::shared_ptr<const Result> >(ob.get())));   
+            }
           }
         }
       };
@@ -371,14 +388,19 @@ namespace chaiscript
         {
           if (ob.is_ref())
           {
-            if (!ob.get_type_info().m_is_const)
+            if (!ob.get_type_info().is_const())
             {
               return boost::cref((boost::any_cast<boost::reference_wrapper<Result> >(ob.get())).get());
             } else {
               return boost::any_cast<boost::reference_wrapper<const Result> >(ob.get());
             }
           } else {
-            return boost::cref(*(boost::any_cast<boost::shared_ptr<Result> >(ob.get())));   
+            if (!ob.get_type_info().is_const())
+            {
+              return boost::cref(*(boost::any_cast<boost::shared_ptr<Result> >(ob.get())));   
+            } else {
+              return boost::cref(*(boost::any_cast<boost::shared_ptr<const Result> >(ob.get())));   
+            }
           }
         }
       };
@@ -395,14 +417,19 @@ namespace chaiscript
         {
           if (ob.is_ref())
           {
-            if (!ob.get_type_info().m_is_const)
+            if (!ob.get_type_info().is_const())
             {
               return (boost::any_cast<boost::reference_wrapper<Result> >(ob.get())).get_pointer();
             } else {
               return (boost::any_cast<boost::reference_wrapper<const Result> >(ob.get())).get_pointer();
             }
           } else {
-            return (boost::any_cast<boost::shared_ptr<Result> >(ob.get())).get();
+            if (!ob.get_type_info().is_const())
+            {
+              return (boost::any_cast<boost::shared_ptr<Result> >(ob.get())).get();
+            } else {
+              return (boost::any_cast<boost::shared_ptr<const Result> >(ob.get())).get();
+            }
           }
         }
       };
@@ -460,7 +487,26 @@ namespace chaiscript
       };
 
     /**
-     * Cast_Helper for casting to a boost::shared_ptr<> type
+     * Cast_Helper for casting to a boost::shared_ptr<const> type
+     */
+    template<typename Result>
+      struct Cast_Helper<typename boost::shared_ptr<const Result> >
+      {
+        typedef typename boost::shared_ptr<const Result> Result_Type;
+
+        static Result_Type cast(const Boxed_Value &ob)
+        {
+          if (!ob.get_type_info().is_const())
+          {
+            return boost::const_pointer_cast<const Result>(boost::any_cast<boost::shared_ptr<Result> >(ob.get()));
+          } else {
+            return boost::any_cast<boost::shared_ptr<const Result> >(ob.get());
+          }
+        }
+      };
+
+    /**
+     * Cast_Helper for casting to a const boost::shared_ptr<> & type
      */
     template<typename Result>
       struct Cast_Helper<const boost::shared_ptr<Result> &>
@@ -473,6 +519,25 @@ namespace chaiscript
         }
       };
 
+    /**
+     * Cast_Helper for casting to a const boost::shared_ptr<const> & type
+     */
+    template<typename Result>
+      struct Cast_Helper<const boost::shared_ptr<const Result> &>
+      {
+        typedef typename boost::shared_ptr<const Result> Result_Type;
+
+        static Result_Type cast(const Boxed_Value &ob)
+        {
+          if (!ob.get_type_info().is_const())
+          {
+            return boost::const_pointer_cast<const Result>(boost::any_cast<boost::shared_ptr<Result> >(ob.get()));
+          } else {
+            return boost::any_cast<boost::shared_ptr<const Result> >(ob.get());
+          }
+        }
+      };
+
 
 
     /**
@@ -512,7 +577,7 @@ namespace chaiscript
   {
     public:
       bad_boxed_cast(const Type_Info &t_from, const std::type_info &t_to) throw()
-        : from(t_from.m_type_info), to(&t_to), m_what("Cannot perform boxed_cast")
+        : from(t_from), to(&t_to), m_what("Cannot perform boxed_cast")
       {
       }
 
@@ -527,7 +592,8 @@ namespace chaiscript
       {
         return m_what.c_str();
       }
-      const std::type_info *from;
+
+      Type_Info from;
       const std::type_info *to;
 
     private:
@@ -558,12 +624,12 @@ namespace chaiscript
     Boxed_POD_Value(const Boxed_Value &v)
       : d(0), i(0), m_isfloat(false)
     {
-      if (!v.get_type_info().m_type_info)
+      if (v.get_type_info().is_unknown())
       {
         throw boost::bad_any_cast();
       }
 
-      const std::type_info &inp_ = *v.get_type_info().m_type_info;
+      const Type_Info &inp_ = v.get_type_info();
 
       if (inp_ == typeid(double))
       {
@@ -702,6 +768,30 @@ namespace chaiscript
       return Boxed_Value(t);
     }
 
+  template<typename T>
+    Boxed_Value const_var(T *t)
+    {
+      return Boxed_Value( const_cast<typename boost::add_const<T>::type>(t) );
+    }
+
+  template<typename T>
+    Boxed_Value const_var(const boost::shared_ptr<T> &t)
+    {
+      return Boxed_Value( boost::const_pointer_cast<typename boost::add_const<T>::type>(t) );
+    }
+
+  template<typename T>
+    Boxed_Value const_var(const boost::reference_wrapper<T> &t)
+    {
+      return Boxed_Value( boost::cref(t.get()) );
+    }
+
+  template<typename T>
+    Boxed_Value const_var(const T &t)
+    {
+      return Boxed_Value(boost::shared_ptr<typename boost::add_const<T>::type >(new T(t)));
+    }
+
   /**
    * Return true if the two Boxed_Values share the same internal type
    */

include/chaiscript/dispatchkit/dispatchkit.hpp

@@ -13,6 +13,7 @@
 #include <set>
 #include <boost/shared_ptr.hpp>
 #include <boost/lexical_cast.hpp>
+#include <boost/tuple/tuple.hpp>
 #include <stdexcept>
 #include <vector>
 #include <iostream>
@@ -22,6 +23,7 @@
 #include "type_info.hpp"
 #include "proxy_functions.hpp"
 #include "proxy_constructors.hpp"
+#include "../chaiscript_threading.hpp"
 
 namespace chaiscript
 {
@@ -40,16 +42,26 @@ namespace chaiscript
         return *this;
       }
 
-      template<typename T>
-        void apply(T &t) const
+      //Add a bit of chaiscript to eval during module implementation
+      Module &eval(const std::string &str)
+      {
+        m_evals.push_back(str);
+        return *this;
+      }
+
+
+      template<typename Eval, typename Engine>
+        void apply(Eval &t_eval, Engine &t_engine) const
         {
-          apply(m_typeinfos.begin(), m_typeinfos.end(), t);
-          apply(m_funcs.begin(), m_funcs.end(), t);
+          apply(m_typeinfos.begin(), m_typeinfos.end(), t_engine);
+          apply(m_funcs.begin(), m_funcs.end(), t_engine);
+          apply_eval(m_evals.begin(), m_evals.end(), t_eval);
         }
 
     private:
       std::vector<std::pair<Type_Info, std::string> > m_typeinfos;
       std::vector<std::pair<Proxy_Function, std::string> > m_funcs;
+      std::vector<std::string> m_evals;
 
       template<typename T, typename InItr>
         void apply(InItr begin, InItr end, T &t) const
@@ -60,6 +72,18 @@ namespace chaiscript
             ++begin;
           }
         }
+
+      template<typename T, typename InItr>
+        void apply_eval(InItr begin, InItr end, T &t) const
+        {
+          while (begin != end)
+          {
+            t.eval(*begin);
+            ++begin;
+          }
+        }
+
+
   };
 
   typedef boost::shared_ptr<Module> ModulePtr;
@@ -73,7 +97,8 @@ namespace chaiscript
   {
     public:
       Dispatch_Function(const std::vector<std::pair<std::string, Proxy_Function > > &t_funcs)
-        : m_funcs(t_funcs)
+        : Proxy_Function_Base(std::vector<Type_Info>()),
+          m_funcs(t_funcs)
       {
       }
 
@@ -84,14 +109,9 @@ namespace chaiscript
 
       virtual ~Dispatch_Function() {}
 
-      virtual Boxed_Value operator()(const std::vector<Boxed_Value> &params)
+      virtual Boxed_Value operator()(const std::vector<Boxed_Value> &params) const
       {
-        return dispatch(m_funcs, params);
-      }
-
-      virtual std::vector<Type_Info> get_param_types() const
-      {
-        return std::vector<Type_Info>();
+        return dispatch(m_funcs.begin(), m_funcs.end(), params);
       }
 
       virtual int get_arity() const
@@ -155,13 +175,19 @@ namespace chaiscript
     public:
       typedef std::map<std::string, chaiscript::Type_Info> Type_Name_Map;
       typedef std::map<std::string, Boxed_Value> Scope;
-      typedef boost::shared_ptr<std::deque<Scope> > Stack;
+      typedef boost::tuples::tuple<std::map<std::string, Boxed_Value>, std::deque<Scope>, bool> StackData;
+      typedef boost::shared_ptr<StackData> Stack;
 
       Dispatch_Engine()
-        : m_scopes(new Stack::element_type()),
-          m_place_holder(boost::shared_ptr<Placeholder_Object>(new Placeholder_Object()))
+        : m_place_holder(boost::shared_ptr<Placeholder_Object>(new Placeholder_Object()))
       {
-        m_scopes->push_back(Scope());
+        StackData &stack = get_stack_data();
+        stack.get<1>().push_back(Scope());
+      }
+
+      ~Dispatch_Engine()
+      {
+        Boxed_Value::clear_cache();
       }
 
       /**
@@ -170,15 +196,10 @@ namespace chaiscript
       bool add(const Proxy_Function &f, const std::string &name)
       {
         validate_object_name(name);
-        return add_function(f, name);
-      }
 
-      /**
-       * Add a module's worth of registrations to the system
-       */
-      void add(const ModulePtr &m)
-      {
-        m->apply(*this);
+        StackData &stack = get_stack_data();
+        stack.get<0>().erase(name);
+        return add_function(f, name);
       }
 
       /**
@@ -188,12 +209,15 @@ namespace chaiscript
       void add(const Boxed_Value &obj, const std::string &name)
       {
         validate_object_name(name);
-        for (int i = m_scopes->size()-1; i >= 0; --i)
+        StackData &stack = get_stack_data();
+
+        for (int i = stack.get<1>().size()-1; i >= 0; --i)
         {
-          std::map<std::string, Boxed_Value>::const_iterator itr = (*m_scopes)[i].find(name);
-          if (itr != (*m_scopes)[i].end())
+          std::map<std::string, Boxed_Value>::const_iterator itr = (stack.get<1>())[i].find(name);
+          if (itr != (stack.get<1>())[i].end())
           {
-            (*m_scopes)[i][name] = Boxed_Value(obj);
+            stack.get<0>().erase(name);
+            (stack.get<1>())[i][name] = obj;
             return;
           }
         }
@@ -206,8 +230,26 @@ namespace chaiscript
        */
       void add_object(const std::string &name, const Boxed_Value &obj)
       {
+        StackData &stack = get_stack_data();
         validate_object_name(name);
-        m_scopes->back()[name] = Boxed_Value(obj);
+        stack.get<0>().erase(name);
+        stack.get<1>().back()[name] = obj;
+      }
+
+      /**
+       * Adds a new shared object, between all the threads
+       */
+      void add_shared_object(const Boxed_Value &obj, const std::string &name)
+      {
+        StackData &stack = get_stack_data();
+        validate_object_name(name);
+        stack.get<0>().erase(name);
+        
+#ifndef CHAISCRIPT_NO_THREADS
+        boost::unique_lock<boost::shared_mutex> l(m_shared_object_mutex);
+#endif
+
+        m_shared_objects[name] = obj;
       }
 
       /**
@@ -215,7 +257,8 @@ namespace chaiscript
        */
       void new_scope()
       {
-        m_scopes->push_back(Scope());
+        StackData &stack = get_stack_data();
+        stack.get<1>().push_back(Scope());
       }
 
       /**
@@ -223,22 +266,22 @@ namespace chaiscript
        */
       void pop_scope()
       {
-        if (m_scopes->size() > 1)
+        StackData &stack = get_stack_data();
+        if (stack.get<1>().size() > 1)
         {
-          m_scopes->pop_back();
+          Scope &scope(stack.get<1>().back());
+          for (Scope::const_iterator itr = scope.begin();
+               itr != scope.end();
+               ++itr)
+          {
+            stack.get<0>().erase(itr->first);
+          }
+          stack.get<1>().pop_back();
         } else {
           throw std::range_error("Unable to pop global stack");
         }
       }
 
-      /**
-       * Returns the current stack
-       */
-      Stack get_stack()
-      {
-        return m_scopes;
-      }
-
       /**
        * Swaps out the stack with a new stack
        * \returns the old stack
@@ -246,14 +289,33 @@ namespace chaiscript
        */
       Stack set_stack(const Stack &s)
       {
-        Stack old = m_scopes;
-        m_scopes = s;
+        Stack old = m_stack_holder->stack;
+        m_stack_holder->stack = s;
         return old;
       }
 
-      Stack new_stack()
+      Stack new_stack() const
       {
-        return Stack(new Stack::element_type());
+        Stack s(new Stack::element_type());
+        s->get<1>().push_back(Scope());
+        s->get<2>() = false;
+        return s;
+      }
+
+      Stack get_stack() const
+      {
+        return m_stack_holder->stack;
+      }
+
+      void sync_cache()
+      {
+        m_stack_holder->stack->get<0>().clear();
+
+#ifndef CHAISCRIPT_NO_THREADS
+        boost::shared_lock<boost::shared_mutex> l(m_mutex);
+#endif
+
+        get_function_cache() = m_functions;
       }
 
       /**
@@ -263,27 +325,58 @@ namespace chaiscript
        */
       Boxed_Value get_object(const std::string &name) const
       {
+        // Is it a placeholder object?
         if (name == "_")
         {
           return m_place_holder;
         }
 
-        for (int i = m_scopes->size()-1; i >= 0; --i)
+        StackData &stack = get_stack_data();
+        std::map<std::string, Boxed_Value> &cache = stack.get<0>();
+
+        // Is it in the cache?
+        std::map<std::string, Boxed_Value>::const_iterator itr = cache.find(name);
+        if (itr != cache.end())
         {
-          std::map<std::string, Boxed_Value>::const_iterator itr = (*m_scopes)[i].find(name);
-          if (itr != (*m_scopes)[i].end())
+          return itr->second;
+        }
+
+        // Is it in the stack?
+        for (int i = stack.get<1>().size()-1; i >= 0; --i)
+        {
+          std::map<std::string, Boxed_Value>::const_iterator itr = (stack.get<1>())[i].find(name);
+          if (itr != (stack.get<1>())[i].end())
           {
+            cache[name] = itr->second;
             return itr->second;
           }
         }
 
+        // Are we in the 0th stack and should check the shared objects?
+        if (stack.get<2>())
+        {
+#ifndef CHAISCRIPT_NO_THREADS
+          boost::shared_lock<boost::shared_mutex> l(m_shared_object_mutex);
+#endif
+
+          itr = m_shared_objects.find(name);
+          if (itr != m_shared_objects.end())
+          {
+            cache[name] = itr->second;
+            return itr->second;
+          }
+        }
+
+        // If all that failed, then check to see if it's a function
         std::vector<std::pair<std::string, std::multimap<std::string, Proxy_Function >::mapped_type> > funcs = get_function(name);
 
         if (funcs.empty())
         {
           throw std::range_error("Object not known: " + name);
         } else {
-          return Boxed_Value(Proxy_Function(new Dispatch_Function(funcs)));
+          Boxed_Value f(Const_Proxy_Function(new Dispatch_Function(funcs)));
+          cache[name] = f;
+          return f;
         }
       }
 
@@ -292,6 +385,10 @@ namespace chaiscript
        */
       void add(const Type_Info &ti, const std::string &name)
       {
+#ifndef CHAISCRIPT_NO_THREADS
+        boost::unique_lock<boost::shared_mutex> l(m_mutex);
+#endif
+
         m_types.insert(std::make_pair(name, ti));
       }
 
@@ -300,6 +397,10 @@ namespace chaiscript
        */
       Type_Info get_type(const std::string &name) const
       {
+#ifndef CHAISCRIPT_NO_THREADS
+        boost::shared_lock<boost::shared_mutex> l(m_mutex);
+#endif
+
         Type_Name_Map::const_iterator itr = m_types.find(name);
 
         if (itr != m_types.end())
@@ -317,17 +418,21 @@ namespace chaiscript
        */
       std::string get_type_name(const Type_Info &ti) const
       {
+#ifndef CHAISCRIPT_NO_THREADS
+        boost::shared_lock<boost::shared_mutex> l(m_mutex);
+#endif
+
         for (Type_Name_Map::const_iterator itr = m_types.begin();
              itr != m_types.end();
              ++itr)
         {
-          if (itr->second.m_bare_type_info == ti.m_bare_type_info)
+          if (itr->second.bare_equal(ti))
           {
             return itr->first;
           }
         }
 
-        return ti.m_bare_type_info->name();
+        return ti.bare_name();
       }
 
       /**
@@ -335,17 +440,21 @@ namespace chaiscript
        */
       std::vector<std::pair<std::string, Type_Info> > get_types() const
       {
+#ifndef CHAISCRIPT_NO_THREADS
+        boost::shared_lock<boost::shared_mutex> l(m_mutex);
+#endif
+
         return std::vector<std::pair<std::string, Type_Info> >(m_types.begin(), m_types.end());
       }
 
       /**
        * Return a function by name
        */
-     std::vector<std::pair<std::string, std::multimap<std::string, Proxy_Function >::mapped_type> > 
+      std::vector<std::pair<std::string, std::multimap<std::string, Proxy_Function >::mapped_type> > 
         get_function(const std::string &t_name) const
       {
         std::pair<std::multimap<std::string, Proxy_Function >::const_iterator, std::multimap<std::string, Proxy_Function >::const_iterator> range
-          = m_functions.equal_range(t_name);
+          = get_function_cache().equal_range(t_name);
 
         return  std::vector<std::pair<std::string, std::multimap<std::string, Proxy_Function >::mapped_type> >(range.first, range.second);
       }
@@ -355,7 +464,8 @@ namespace chaiscript
        */
       bool function_exists(const std::string &name) const
       {
-        return m_functions.find(name) != m_functions.end();
+        std::multimap<std::string, Proxy_Function> &functions = get_function_cache();
+        return functions.find(name) != functions.end();
       }
 
       /**
@@ -363,21 +473,147 @@ namespace chaiscript
        */
       std::vector<std::pair<std::string, Proxy_Function > > get_functions() const
       {
-        return std::vector<std::pair<std::string, Proxy_Function > >(m_functions.begin(), m_functions.end());
+        std::multimap<std::string, Proxy_Function> &functions = get_function_cache();
+        return std::vector<std::pair<std::string, Proxy_Function > >(functions.begin(), functions.end());
       }
 
       void add_reserved_word(const std::string &name)
       {
+#ifndef CHAISCRIPT_NO_THREADS
+        boost::unique_lock<boost::shared_mutex> l(m_mutex);
+#endif
+
         m_reserved_words.insert(name);
       }
 
+      Boxed_Value call_function(const std::string &t_name, const std::vector<Boxed_Value> &params) const
+      {
+        std::multimap<std::string, Proxy_Function> &functions = get_function_cache();
+        std::pair<std::multimap<std::string, Proxy_Function >::const_iterator, std::multimap<std::string, Proxy_Function >::const_iterator> range
+          = functions.equal_range(t_name);
+
+        return  dispatch(range.first, range.second, params);
+      }
+
+      /**
+       * Dump object info to stdout
+       */
+        void dump_object(Boxed_Value o) const
+        {
+          Type_Info ti = o.get_type_info();
+          std::cout << (ti.is_const()?"const ":"") << get_type_name(ti) << std::endl;
+        }
+
+      /**
+       * Dump type info to stdout
+       */
+        void dump_type(const Type_Info &type) const
+        {
+          std::cout << (type.is_const()?"const ":"") << get_type_name(type);
+        }
+
+      /**
+       * Dump function to stdout
+       */
+        void dump_function(const std::pair<const std::string, Proxy_Function > &f) const
+        {
+          std::vector<Type_Info> params = f.second->get_param_types();
+          std::string annotation = f.second->annotation();
+
+          if (annotation.size() > 0) {
+            std::cout << annotation;
+          }
+          dump_type(params.front());
+          std::cout << " " << f.first << "(";
+
+          for (std::vector<Type_Info>::const_iterator itr = params.begin() + 1;
+              itr != params.end();
+              )
+          {
+            dump_type(*itr);
+            ++itr;
+
+            if (itr != params.end())
+            {
+              std::cout << ", ";
+            }
+          }
+
+          std::cout << ") " << std::endl;
+        }
+
+      /**
+       * Dump all system info to stdout
+       */
+        void dump_system() const
+        {
+          std::cout << "Registered Types: " << std::endl;
+          std::vector<std::pair<std::string, Type_Info> > types = get_types();
+          for (std::vector<std::pair<std::string, Type_Info> >::const_iterator itr = types.begin();
+              itr != types.end();
+              ++itr)
+          {
+            std::cout << itr->first << ": ";
+            std::cout << itr->second.bare_name();
+            std::cout << std::endl;
+          }
+
+          std::cout << std::endl;  
+          std::vector<std::pair<std::string, Proxy_Function > > funcs = get_functions();
+
+          std::cout << "Functions: " << std::endl;
+          for (std::vector<std::pair<std::string, Proxy_Function > >::const_iterator itr = funcs.begin();
+              itr != funcs.end();
+              ++itr)
+          {
+            dump_function(*itr);
+          }
+          std::cout << std::endl;
+        }
+
+      /**
+       * return true if the Boxed_Value matches the registered type by name
+       */
+      bool is_type(const std::string &user_typename, Boxed_Value r) const
+      {
+        try {
+          return get_type(user_typename) == r.get_type_info();
+        } catch (const std::range_error &) {
+          return false;
+        }
+      }
+
+      std::string type_name(Boxed_Value obj) const
+      {
+        return get_type_name(obj.get_type_info());
+      }
+
 
     private:
+      /**
+       * Returns the current stack
+       * make const/non const versions
+       */
+      StackData &get_stack_data() const
+      {
+        return *(m_stack_holder->stack);
+      }
+
+      std::multimap<std::string, Proxy_Function> &get_function_cache() const
+      {
+        return m_stack_holder->function_cache;
+      }
+
+
       /**
        * Throw a reserved_word exception if the name is not allowed
        */
-      void validate_object_name(const std::string &name)
+      void validate_object_name(const std::string &name) const
       {
+#ifndef CHAISCRIPT_NO_THREADS
+        boost::shared_lock<boost::shared_mutex> l(m_mutex);
+#endif
+
         if (m_reserved_words.find(name) != m_reserved_words.end())
         {
           throw reserved_word_error(name);
@@ -391,6 +627,10 @@ namespace chaiscript
        */
       bool add_function(const Proxy_Function &f, const std::string &t_name)
       {
+#ifndef CHAISCRIPT_NO_THREADS
+        boost::unique_lock<boost::shared_mutex> l(m_mutex);
+#endif
+
         std::pair<std::multimap<std::string, Proxy_Function >::const_iterator, std::multimap<std::string, Proxy_Function >::const_iterator> range
           = m_functions.equal_range(t_name);
 
@@ -404,110 +644,41 @@ namespace chaiscript
         }
 
         m_functions.insert(std::make_pair(t_name, f));
+        get_function_cache().insert(std::make_pair(t_name, f));
+
         return true;
       }
 
-      Stack m_scopes;
+#ifndef CHAISCRIPT_NO_THREADS
+      mutable boost::shared_mutex m_mutex;
+      mutable boost::shared_mutex m_shared_object_mutex;
+#endif
+
+      struct Stack_Holder
+      {
+        Stack_Holder()
+          : stack(new StackData())
+        {
+          stack->get<2>() = true;
+        }
+
+        Stack stack;
+
+        std::multimap<std::string, Proxy_Function> function_cache;
+      };  
+
+      chaiscript::threading::Thread_Storage<Stack_Holder> m_stack_holder;
+
+
+      std::multimap<std::string, Proxy_Function> m_functions;
+      std::map<std::string, Boxed_Value> m_shared_objects;
 
-      std::multimap<std::string, Proxy_Function > m_functions;
       Type_Name_Map m_types;
       Boxed_Value m_place_holder;
+
       std::set<std::string> m_reserved_words;
   };
 
-  /**
-   * Dump object info to stdout
-   */
-  void dump_object(Boxed_Value o, const Dispatch_Engine &e)
-  {
-    Type_Info ti = o.get_type_info();
-    std::cout << (ti.m_is_const?"const ":"") << e.get_type_name(ti) << std::endl;
-  }
-
-  /**
-   * Dump type info to stdout
-   */
-  void dump_type(const Type_Info &type, const Dispatch_Engine &e)
-  {
-    std::cout << (type.m_is_const?"const ":"") << e.get_type_name(type);
-  }
-
-  /**
-   * Dump function to stdout
-   */
-  void dump_function(const std::pair<const std::string, Proxy_Function > &f, const Dispatch_Engine &e)
-  {
-    std::vector<Type_Info> params = f.second->get_param_types();
-    std::string annotation = f.second->annotation();
-
-    if (annotation.size() > 0) {
-        std::cout << annotation;
-    }
-    dump_type(params.front(), e);
-    std::cout << " " << f.first << "(";
-
-    for (std::vector<Type_Info>::const_iterator itr = params.begin() + 1;
-         itr != params.end();
-         )
-    {
-      dump_type(*itr, e);
-      ++itr;
-
-      if (itr != params.end())
-      {
-        std::cout << ", ";
-      }
-    }
-
-    std::cout << ") " << std::endl;
-  }
-
-  /**
-   * Dump all system info to stdout
-   */
-  void dump_system(const Dispatch_Engine &s)
-  {
-    std::cout << "Registered Types: " << std::endl;
-    std::vector<std::pair<std::string, Type_Info> > types = s.get_types();
-    for (std::vector<std::pair<std::string, Type_Info> >::const_iterator itr = types.begin();
-         itr != types.end();
-         ++itr)
-    {
-      std::cout << itr->first << ": ";
-      std::cout << itr->second.m_bare_type_info->name();
-      std::cout << std::endl;
-    }
-
-    std::cout << std::endl;  
-    std::vector<std::pair<std::string, Proxy_Function > > funcs = s.get_functions();
-
-    std::cout << "Functions: " << std::endl;
-    for (std::vector<std::pair<std::string, Proxy_Function > >::const_iterator itr = funcs.begin();
-         itr != funcs.end();
-         ++itr)
-    {
-      dump_function(*itr, s);
-    }
-    std::cout << std::endl;
-  }
-
-  /**
-   * return true if the Boxed_Value matches the registered type by name
-   */
-  bool is_type(const Dispatch_Engine &e, const std::string &user_typename, Boxed_Value r)
-  {
-    try {
-      return e.get_type(user_typename) == r.get_type_info();
-    } catch (const std::range_error &) {
-      return false;
-    }
-  }
-
-  std::string type_name(const Dispatch_Engine &e, Boxed_Value obj)
-  {
-    return e.get_type_name(obj.get_type_info());
-  }
-
 }
 
 #endif

include/chaiscript/dispatchkit/dynamic_object.hpp

@@ -0,0 +1,226 @@
+#ifndef __DYNAMIC_OBJECT_HPP__
+#define __DYNAMIC_OBJECT_HPP__
+
+#include <boost/optional.hpp>
+
+namespace chaiscript
+{
+  class Dynamic_Object
+  {
+    public:
+      Dynamic_Object(const std::string &t_type_name)
+        : m_type_name(t_type_name)
+      {
+      }
+
+      std::string get_type_name() const
+      {
+        return m_type_name;
+      }
+
+      Boxed_Value get_attr(const std::string &t_attr_name)
+      {
+        return m_attrs[t_attr_name];
+      }
+
+      std::map<std::string, Boxed_Value> get_attrs()
+      {
+        return m_attrs;
+      }
+
+    private:
+      std::string m_type_name;
+
+      std::map<std::string, Boxed_Value> m_attrs;
+  };
+
+  struct Dynamic_Object_Attribute
+  {
+    static Boxed_Value func(const std::string &t_type_name, const std::string &t_attr_name,
+        Dynamic_Object &t_do)
+    {
+      if (t_do.get_type_name() != t_type_name) 
+      {
+        throw bad_boxed_cast("Dynamic object type mismatch");
+      }
+
+      return t_do.get_attr(t_attr_name);
+    }
+  };
+
+  /**
+   * A Proxy_Function implementation designed for calling a function
+   * that is automatically guarded based on the first param based on the
+   * param's type name
+   */
+  class Dynamic_Object_Function : public Proxy_Function_Base
+  {
+    public:
+      Dynamic_Object_Function(
+          const std::string &t_type_name,
+          const Proxy_Function &t_func,
+          const boost::optional<Type_Info> &t_ti = boost::optional<Type_Info>())
+        : Proxy_Function_Base(t_func->get_param_types()),
+          m_type_name(t_type_name), m_func(t_func), m_ti(t_ti)
+      {
+        assert( (t_func->get_arity() > 0 || t_func->get_arity() < 0)
+            && "Programming error, Dynamic_Object_Function must have at least one parameter (this)");
+      }
+
+      virtual ~Dynamic_Object_Function() {}
+
+      virtual bool operator==(const Proxy_Function_Base &f) const
+      {
+        try
+        {
+          const Dynamic_Object_Function &df = dynamic_cast<const Dynamic_Object_Function &>(f);
+          return df.m_type_name == m_type_name && (*df.m_func) == (*m_func);
+        } catch (const std::bad_cast &) {
+          return false;
+        }
+      }
+
+      virtual bool call_match(const std::vector<Boxed_Value> &vals) const
+      {
+        if (dynamic_object_typename_match(vals, m_type_name, m_ti))
+        {
+          return m_func->call_match(vals);
+        } else {
+          return false;
+        }
+      }    
+
+      virtual Boxed_Value operator()(const std::vector<Boxed_Value> &params) const
+      {
+        if (dynamic_object_typename_match(params, m_type_name, m_ti))
+        {
+          return (*m_func)(params);
+        } else {
+          throw guard_error();
+        } 
+      }
+
+      virtual int get_arity() const
+      {
+	return m_func->get_arity();
+      }
+
+      virtual std::string annotation() const
+      {
+        return m_func->annotation();
+      }
+
+    private:
+      static bool dynamic_object_typename_match(const std::vector<Boxed_Value> &bvs, const std::string &name,
+          const boost::optional<Type_Info> &ti) 
+      {
+        if (bvs.size() > 0)
+        {
+          try {
+            const Dynamic_Object &d = boxed_cast<const Dynamic_Object &>(bvs[0]);
+            return name == "Dynamic_Object" || d.get_type_name() == name;
+          } catch (const std::bad_cast &) {
+            if (ti)
+            {
+              return bvs[0].get_type_info().bare_equal(*ti);
+            } else {
+              return false;
+            }
+          }
+        } else {
+          return false;
+        }
+      }
+
+      std::string m_type_name;
+      Proxy_Function m_func;
+      boost::optional<Type_Info> m_ti;
+
+  };
+
+
+  /**
+   * A Proxy_Function implementation designed for creating a new
+   * Dynamic_Object
+   * that is automatically guarded based on the first param based on the
+   * param's type name
+   */
+  class Dynamic_Object_Constructor : public Proxy_Function_Base
+  {
+    public:
+      Dynamic_Object_Constructor(
+          const std::string &t_type_name,
+          const Proxy_Function &t_func)
+        : Proxy_Function_Base(build_type_list(t_func->get_param_types())),
+          m_type_name(t_type_name), m_func(t_func)
+      {
+        assert( (t_func->get_arity() > 0 || t_func->get_arity() < 0)
+            && "Programming error, Dynamic_Object_Function must have at least one parameter (this)");
+      }
+
+      static std::vector<Type_Info> build_type_list(const std::vector<Type_Info> &tl)
+      {
+        std::vector<Type_Info>::const_iterator begin = tl.begin();
+        std::vector<Type_Info>::const_iterator end = tl.end();
+
+        if (begin != end)
+        {
+          ++begin;
+        }
+
+        return std::vector<Type_Info>(begin, end);
+      }
+
+      virtual ~Dynamic_Object_Constructor() {}
+
+      virtual bool operator==(const Proxy_Function_Base &f) const
+      {
+        try
+        {
+          const Dynamic_Object_Constructor &dc = dynamic_cast<const Dynamic_Object_Constructor&>(f);
+          return dc.m_type_name == m_type_name && (*dc.m_func) == (*m_func);
+        } catch (const std::bad_cast &) {
+          return false;
+        }
+      }
+
+      virtual bool call_match(const std::vector<Boxed_Value> &vals) const
+      {
+        std::vector<Boxed_Value> new_vals;
+        new_vals.push_back(Boxed_Value(Dynamic_Object(m_type_name)));
+        new_vals.insert(new_vals.end(), vals.begin(), vals.end());
+
+        return m_func->call_match(new_vals);
+      }    
+
+      virtual Boxed_Value operator()(const std::vector<Boxed_Value> &params) const
+      {
+        std::vector<Boxed_Value> new_params;
+        chaiscript::Boxed_Value bv = var(Dynamic_Object(m_type_name));
+        new_params.push_back(bv);
+        new_params.insert(new_params.end(), params.begin(), params.end());
+
+        (*m_func)(new_params);
+
+        return bv;
+      }
+
+      virtual int get_arity() const
+      {
+        // "this" is not considered part of the arity
+	return m_func->get_arity() - 1; 
+      }
+
+      virtual std::string annotation() const
+      {
+        return m_func->annotation();
+      }
+
+    private:
+      std::string m_type_name;
+      Proxy_Function m_func;
+
+  };
+}
+#endif
+

include/chaiscript/dispatchkit/handle_return.hpp

@@ -23,27 +23,27 @@ namespace chaiscript
   template<typename Ret>
     struct Handle_Return
     {
-      static Boxed_Value call(const boost::function<Ret ()> &f)
+      static Boxed_Value handle(const Ret &r)
       {
-        return Boxed_Value(f());
+        return Boxed_Value(r);
       }
     };
 
   template<typename Ret>
     struct Handle_Return<boost::shared_ptr<Ret> &>
     {
-      static Boxed_Value call(const boost::function<boost::shared_ptr<Ret> & ()> &f)
+      static Boxed_Value handle(const boost::shared_ptr<Ret> &r)
       {
-        return Boxed_Value(f());
+        return Boxed_Value(r);
       }
     };
 
   template<typename Ret>
     struct Handle_Return<const boost::shared_ptr<Ret> &>
     {
-      static Boxed_Value call(const boost::function<const boost::shared_ptr<Ret> & ()> &f)
+      static Boxed_Value handle(const boost::shared_ptr<Ret> &r)
       {
-        return Boxed_Value(f());
+        return Boxed_Value(r);
       }
     };
 
@@ -53,9 +53,9 @@ namespace chaiscript
   template<typename Ret>
     struct Handle_Return<Ret &>
     {
-      static Boxed_Value call(const boost::function<Ret &()> &f)
+      static Boxed_Value handle(Ret &r)
       {
-        return Boxed_Value(boost::ref(f()));
+        return Boxed_Value(boost::ref(r));
       }
     };
 
@@ -65,9 +65,9 @@ namespace chaiscript
   template<>
     struct Handle_Return<Boxed_Value>
     {
-      static Boxed_Value call(const boost::function<Boxed_Value ()> &f)
+      static Boxed_Value handle(const Boxed_Value &r)
       {
-        return f();
+        return r;
       }
     };
 
@@ -77,9 +77,9 @@ namespace chaiscript
   template<>
     struct Handle_Return<Boxed_Value &>
     {
-      static Boxed_Value call(const boost::function<Boxed_Value &()> &f)
+      static Boxed_Value handle(const Boxed_Value &r)
       {
-        return f();
+        return r;
       }
     };
 
@@ -89,9 +89,8 @@ namespace chaiscript
   template<>
     struct Handle_Return<void>
     {
-      static Boxed_Value call(const boost::function<void ()> &f)
+      static Boxed_Value handle()
       {
-        f();
         return Boxed_Value(Boxed_Value::Void_Type());
       }
     };

include/chaiscript/dispatchkit/proxy_functions.hpp

@@ -13,7 +13,6 @@
 #include "type_info.hpp"
 #include <string>
 #include <boost/function.hpp>
-
 #include <stdexcept>
 #include <vector>
 #include "proxy_functions_detail.hpp"
@@ -63,8 +62,10 @@ namespace chaiscript
   {
     public:
       virtual ~Proxy_Function_Base() {}
-      virtual Boxed_Value operator()(const std::vector<Boxed_Value> &params) = 0;
-      virtual std::vector<Type_Info> get_param_types() const = 0;
+      virtual Boxed_Value operator()(const std::vector<Boxed_Value> &params) const = 0;
+
+      std::vector<Type_Info> get_param_types() const { return m_types; }
+
       virtual bool operator==(const Proxy_Function_Base &) const = 0;
       virtual bool call_match(const std::vector<Boxed_Value> &vals) const = 0;
 
@@ -91,10 +92,10 @@ namespace chaiscript
 
             const Type_Info &ti = types[1];
 
-            if (!ti.m_bare_type_info || !(vals[0].get_type_info().m_bare_type_info)
-                || (*ti.m_bare_type_info) == (*user_type<Boxed_Value>().m_bare_type_info)
-                || (*ti.m_bare_type_info) == (*user_type<Boxed_POD_Value>().m_bare_type_info)
-                || (*vals[0].get_type_info().m_bare_type_info) == (*ti.m_bare_type_info))
+            if (ti.is_unknown() || vals[0].get_type_info().is_unknown()
+                || ti.bare_equal(user_type<Boxed_Value>())
+                || ti.bare_equal(user_type<Boxed_POD_Value>())
+                || ti.bare_equal(vals[0].get_type_info()))
             {
               return true;
             } else {
@@ -109,9 +110,36 @@ namespace chaiscript
       virtual int get_arity() const = 0;
 
       virtual std::string annotation() const = 0;
+
+    protected:
+      Proxy_Function_Base(const std::vector<Type_Info> &t_types)
+        : m_types(t_types)
+      {
+      }
+
+      bool compare_types(const std::vector<Type_Info> &tis, const std::vector<Boxed_Value> &bvs) const
+      {
+        if (tis.size() - 1 != bvs.size())
+        {
+          return false;
+        } else {
+          const int size = bvs.size();
+          for (int i = 0; i < size; ++i)
+          {
+            if (!(tis[i+1].bare_equal(bvs[i].get_type_info()) && tis[i+1].is_const() >= bvs[i].get_type_info().is_const() ))
+            {
+              return false;
+            }
+          }
+        }
+        return true;
+      }
+
+      std::vector<Type_Info> m_types;
   };
 
   typedef boost::shared_ptr<Proxy_Function_Base> Proxy_Function;
+  typedef boost::shared_ptr<const Proxy_Function_Base> Const_Proxy_Function;
 
   /**
    * Exception thrown if a function's guard fails to execute
@@ -139,8 +167,8 @@ namespace chaiscript
           int t_arity=-1,
           const std::string &t_description = "",
           const Proxy_Function &t_guard = Proxy_Function())
-        : m_f(t_f), m_arity(t_arity), m_description(t_description), m_guard(t_guard),
-          m_types(build_param_type_list(t_arity))
+        : Proxy_Function_Base(build_param_type_list(t_arity)),
+          m_f(t_f), m_arity(t_arity), m_description(t_description), m_guard(t_guard)
       {
       }
 
@@ -157,7 +185,7 @@ namespace chaiscript
 
       virtual ~Dynamic_Proxy_Function() {}
 
-      virtual Boxed_Value operator()(const std::vector<Boxed_Value> &params)
+      virtual Boxed_Value operator()(const std::vector<Boxed_Value> &params) const
       {
         if (m_arity < 0 || params.size() == size_t(m_arity))
         {
@@ -179,11 +207,6 @@ namespace chaiscript
 	return m_arity;
       }
 
-      virtual std::vector<Type_Info> get_param_types() const
-      {
-	return m_types;
-      }
-
       virtual std::string annotation() const
       {
         return m_description;
@@ -229,7 +252,6 @@ namespace chaiscript
       int m_arity;
       std::string m_description;
       Proxy_Function m_guard;
-      std::vector<Type_Info> m_types;
   };
 
   /**
@@ -249,9 +271,10 @@ namespace chaiscript
   class Bound_Function : public Proxy_Function_Base
   {
     public:
-      Bound_Function(const Proxy_Function &t_f, 
+      Bound_Function(const Const_Proxy_Function &t_f, 
                      const std::vector<Boxed_Value> &t_args)
-        : m_f(t_f), m_args(t_args), m_arity(m_f->get_arity()<0?-1:(m_f->get_arity() - m_args.size()))
+        : Proxy_Function_Base(std::vector<Type_Info>()),
+          m_f(t_f), m_args(t_args), m_arity(m_f->get_arity()<0?-1:(m_f->get_arity() - m_args.size()))
       {
       }
 
@@ -267,7 +290,7 @@ namespace chaiscript
         return m_f->call_match(build_param_list(vals));
       }
 
-      virtual Boxed_Value operator()(const std::vector<Boxed_Value> &params)
+      virtual Boxed_Value operator()(const std::vector<Boxed_Value> &params) const
       {
         return (*m_f)(build_param_list(params));
       }
@@ -310,11 +333,6 @@ namespace chaiscript
         return args;
       }
 
-      virtual std::vector<Type_Info> get_param_types() const
-      {
-        return std::vector<Type_Info>();
-      }
-
       virtual int get_arity() const
       {
         return m_arity;
@@ -326,7 +344,7 @@ namespace chaiscript
       }
 
     private:
-      Proxy_Function m_f;
+      Const_Proxy_Function m_f;
       std::vector<Boxed_Value> m_args;
       int m_arity;
   };
@@ -341,7 +359,8 @@ namespace chaiscript
   {
     public:
       Proxy_Function_Impl(const boost::function<Func> &f)
-        : m_f(f), m_dummy_func(0), m_types(build_param_type_list(m_dummy_func))
+        : Proxy_Function_Base(build_param_type_list((Func *)(0))),
+          m_f(f), m_dummy_func(0)
       {
       }
 
@@ -357,14 +376,9 @@ namespace chaiscript
         }
       }
  
-      virtual Boxed_Value operator()(const std::vector<Boxed_Value> &params)
+      virtual Boxed_Value operator()(const std::vector<Boxed_Value> &params) const
       {
-        return call_func(m_f, params);
-      }
-
-      virtual std::vector<Type_Info> get_param_types() const
-      {
-	return m_types;
+        return Do_Call<typename boost::function<Func>::result_type>::go(m_f, params);
       }
 
       virtual int get_arity() const
@@ -375,7 +389,12 @@ namespace chaiscript
 
       virtual bool call_match(const std::vector<Boxed_Value> &vals) const
       {
-        return compare_types(m_dummy_func, vals);
+        if (int(vals.size()) != get_arity()) 
+        {
+          return false;
+        }
+
+        return compare_types(m_types, vals) || compare_types_cast(m_dummy_func, vals);
       }
 
       virtual std::string annotation() const
@@ -386,7 +405,6 @@ namespace chaiscript
     private:
       boost::function<Func> m_f;
       Func *m_dummy_func;
-      std::vector<Type_Info> m_types;
   };
 
   /**
@@ -410,17 +428,16 @@ namespace chaiscript
    * each function against the set of parameters, in order, until a matching
    * function is found or throw dispatch_error if no matching function is found
    */
-  Boxed_Value dispatch(const std::vector<std::pair<std::string, Proxy_Function> > &funcs,
+  template<typename InItr>
+  Boxed_Value dispatch(InItr begin, InItr end,
       const std::vector<Boxed_Value> &plist)
   {
-    for (std::vector<std::pair<std::string, Proxy_Function> >::const_iterator itr = funcs.begin();
-        itr != funcs.end();
-        ++itr)
+    while (begin != end)
     {
       try {
-        if (itr->second->filter(plist))
+        if (begin->second->filter(plist))
         {
-          return (*itr->second)(plist);
+          return (*begin->second)(plist);
         }
       } catch (const bad_boxed_cast &) {
         //parameter failed to cast, try again
@@ -430,9 +447,23 @@ namespace chaiscript
         //guard failed to allow the function to execute,
         //try again
       }
+      ++begin;
     }
+
     throw dispatch_error();
   }
+
+  /**
+   * Take a vector of functions and a vector of parameters. Attempt to execute
+   * each function against the set of parameters, in order, until a matching
+   * function is found or throw dispatch_error if no matching function is found
+   */
+  template<typename Funcs>
+  Boxed_Value dispatch(const Funcs &funcs,
+      const std::vector<Boxed_Value> &plist)
+  {
+    return dispatch(funcs.begin(), funcs.end(), plist);
+  }
 }
 
 

include/chaiscript/dispatchkit/proxy_functions_detail.hpp

@@ -7,11 +7,9 @@
 #include <boost/preprocessor.hpp>
 
 #define gettypeinfo(z,n,text)  ti.push_back(detail::Get_Type_Info<Param ## n>::get());
-#define casthelper(z,n,text) ,chaiscript::boxed_cast< Param ## n >(params[n])
-#define comparetype(z,n,text)  && ((detail::Get_Type_Info<Param ## n>::get() == params[n].get_type_info()))
+#define casthelper(z,n,text) BOOST_PP_COMMA_IF(n) chaiscript::boxed_cast< Param ## n >(params[n])
 #define trycast(z,n,text) chaiscript::boxed_cast<Param ## n>(params[n]);
 
-
 #ifndef  BOOST_PP_IS_ITERATING
 #ifndef __proxy_functions_detail_hpp__
 #define __proxy_functions_detail_hpp__
@@ -45,6 +43,27 @@ namespace chaiscript
     int got;
     int expected;
   };
+
+  template<typename Ret>
+    struct Do_Call
+    {
+      template<typename Fun>
+      static Boxed_Value go(const boost::function<Fun> &fun, const std::vector<Boxed_Value> &params)
+      {
+        return Handle_Return<Ret>::handle(call_func(fun, params));
+      }
+    };
+
+  template<>
+    struct Do_Call<void>
+    {
+      template<typename Fun>
+      static Boxed_Value go(const boost::function<Fun> &fun, const std::vector<Boxed_Value> &params)
+      {
+        call_func(fun, params);
+        return Handle_Return<void>::handle();
+      };
+    };
 }
 
 #define BOOST_PP_ITERATION_LIMITS ( 0, 10 )
@@ -68,7 +87,7 @@ namespace chaiscript
       std::vector<Type_Info> ti;
       ti.push_back(detail::Get_Type_Info<Ret>::get());
 
-      BOOST_PP_REPEAT(n, gettypeinfo, ~)
+      BOOST_PP_REPEAT(n, gettypeinfo, ~) 
 
       return ti;
     }
@@ -80,14 +99,14 @@ namespace chaiscript
    * the bad_boxed_cast is passed up to the caller.
    */
   template<typename Ret BOOST_PP_COMMA_IF(n) BOOST_PP_ENUM_PARAMS(n, typename Param)>
-    Boxed_Value call_func(const boost::function<Ret (BOOST_PP_ENUM_PARAMS(n, Param))> &f,
+    Ret call_func(const boost::function<Ret (BOOST_PP_ENUM_PARAMS(n, Param))> &f,
         const std::vector<Boxed_Value> &params)
     {
       if (params.size() != n)
       {
         throw arity_error(params.size(), n);
       } else {
-        return Handle_Return<Ret>::call(boost::bind(f BOOST_PP_REPEAT(n, casthelper, ~)));
+        return f(BOOST_PP_REPEAT(n, casthelper, ~));
       }
     }
 
@@ -97,25 +116,18 @@ namespace chaiscript
    * registration of two functions with the exact same signatures
    */
   template<typename Ret BOOST_PP_COMMA_IF(n) BOOST_PP_ENUM_PARAMS(n, typename Param)>
-    bool compare_types(Ret (*)(BOOST_PP_ENUM_PARAMS(n, Param)),
-        const std::vector<Boxed_Value> &params)
+    bool compare_types_cast(Ret (*)(BOOST_PP_ENUM_PARAMS(n, Param)),
+        const std::vector<Boxed_Value> & BOOST_PP_IF(n, params, ))
     {
-      if (params.size() != n)
-      {
+      try {
+        BOOST_PP_REPEAT(n, trycast, ~);
+      } catch (const bad_boxed_cast &) {
         return false;
-      } else {
-        bool val = true BOOST_PP_REPEAT(n, comparetype, ~);
-        if (val) return true;
-
-        try {
-          BOOST_PP_REPEAT(n, trycast, ~);
-        } catch (const bad_boxed_cast &) {
-          return false;
-        }
-
-        return true;
       }
+
+      return true;
     }
+
 }
 
 #endif

include/chaiscript/dispatchkit/type_info.hpp

@@ -21,60 +21,91 @@ namespace chaiscript
   /**
    * compile time deduced information about a type
    */
-  struct Type_Info
+  class Type_Info
   {
-    Type_Info(bool t_is_const, bool t_is_reference, bool t_is_pointer, bool t_is_void, 
-        const std::type_info *t_ti, const std::type_info *t_bareti)
-      : m_is_const(t_is_const), m_is_reference(t_is_reference), m_is_pointer(t_is_pointer),
+    public:
+      Type_Info(bool t_is_const, bool t_is_reference, bool t_is_pointer, bool t_is_void, 
+          const std::type_info *t_ti, const std::type_info *t_bareti)
+        : m_is_const(t_is_const), m_is_reference(t_is_reference), m_is_pointer(t_is_pointer),
         m_is_void(t_is_void),
-      m_type_info(t_ti), m_bare_type_info(t_bareti),
-      m_is_unknown(false)
-    {
-    }
+        m_type_info(t_ti), m_bare_type_info(t_bareti),
+        m_is_unknown(false)
+      {
+      }
 
-    Type_Info()
-      : m_is_const(false), m_is_reference(false), m_is_pointer(false),
-      m_is_void(false), m_type_info(0), m_bare_type_info(0),
-      m_is_unknown(true)
-    {
-    }
+      Type_Info()
+        : m_is_const(false), m_is_reference(false), m_is_pointer(false),
+        m_is_void(false), m_type_info(0), m_bare_type_info(0),
+        m_is_unknown(true)
+      {
+      }
 
-    Type_Info(const Type_Info &ti)
-    : m_is_const(ti.m_is_const), m_is_reference(ti.m_is_reference), 
-      m_is_pointer(ti.m_is_pointer),
-      m_is_void(ti.m_is_void), m_type_info(ti.m_type_info), 
-      m_bare_type_info(ti.m_bare_type_info),
-      m_is_unknown(ti.m_is_unknown)
-    {
-    }
-    Type_Info &operator=(const Type_Info &ti)
-    {
-      m_is_const = ti.m_is_const;
-      m_is_reference = ti.m_is_reference;
-      m_is_pointer = ti.m_is_pointer;
-      m_is_void = ti.m_is_void;
-      m_type_info = ti.m_type_info;
-      m_bare_type_info = ti.m_bare_type_info;
-      m_is_unknown = ti.m_is_unknown;
-      return *this;
-    }
-    bool operator<(const Type_Info &ti) const
-    {
-      return m_type_info < ti.m_type_info;
-    }
+      Type_Info(const Type_Info &ti)
+        : m_is_const(ti.m_is_const), m_is_reference(ti.m_is_reference), 
+        m_is_pointer(ti.m_is_pointer),
+        m_is_void(ti.m_is_void), m_type_info(ti.m_type_info), 
+        m_bare_type_info(ti.m_bare_type_info),
+        m_is_unknown(ti.m_is_unknown)
+      {
+      }
 
-    bool operator==(const Type_Info &ti) const
-    {
-      return ti.m_type_info == m_type_info;
-    }
+      Type_Info &operator=(const Type_Info &ti)
+      {
+        m_is_const = ti.m_is_const;
+        m_is_reference = ti.m_is_reference;
+        m_is_pointer = ti.m_is_pointer;
+        m_is_void = ti.m_is_void;
+        m_type_info = ti.m_type_info;
+        m_bare_type_info = ti.m_bare_type_info;
+        m_is_unknown = ti.m_is_unknown;
+        return *this;
+      }
 
-    bool m_is_const;
-    bool m_is_reference;
-    bool m_is_pointer;
-    bool m_is_void;
-    const std::type_info *m_type_info;
-    const std::type_info *m_bare_type_info;
-    bool m_is_unknown;
+      bool operator<(const Type_Info &ti) const
+      {
+        return m_type_info < ti.m_type_info;
+      }
+
+      bool operator==(const Type_Info &ti) const
+      {
+        return ti.m_type_info == m_type_info 
+          || (ti.m_type_info && m_type_info && *ti.m_type_info == *m_type_info);
+      }
+
+      bool operator==(const std::type_info &ti) const
+      {
+        return m_type_info != 0 && (*m_type_info) == ti;
+      }
+
+      bool bare_equal(const Type_Info &ti) const
+      {
+        return ti.m_bare_type_info == m_bare_type_info 
+          || (ti.m_bare_type_info && m_bare_type_info && *ti.m_bare_type_info == *m_bare_type_info);
+      }
+
+      bool is_const() const { return m_is_const; }
+      bool is_reference() const { return m_is_reference; }
+      bool is_void() const { return m_is_void; }
+      bool is_unknown() const { return m_is_unknown || m_bare_type_info == 0; }
+
+      std::string bare_name() const
+      {
+        if (m_bare_type_info)
+        {
+          return m_bare_type_info->name();
+        } else {
+          return "";
+        }
+      }
+
+    private:
+      bool m_is_const;
+      bool m_is_reference;
+      bool m_is_pointer;
+      bool m_is_void;
+      const std::type_info *m_type_info;
+      const std::type_info *m_bare_type_info;
+      bool m_is_unknown;
   };
 
   namespace detail
@@ -144,7 +175,6 @@ namespace chaiscript
     return detail::Get_Type_Info<T>::get();
   }
 
-
 }
 
 #endif

include/chaiscript/language/chaiscript_engine.hpp

@@ -10,42 +10,283 @@
 #include <exception>
 #include <fstream>
 
+#ifdef _POSIX_VERSION
+#include <dlfcn.h>
+#else
+#ifdef WIN32
+#include <Windows.h>
+#endif
+#endif
 
 #include "chaiscript_prelude.hpp"
 #include "chaiscript_parser.hpp"
 
 namespace chaiscript
 {
+    struct load_module_error : std::runtime_error
+    {
+       load_module_error(const std::string &reason) throw()
+         : std::runtime_error(reason)
+       {
+       }
+
+       virtual ~load_module_error() throw()
+       {
+       }
+    };
+
+#ifdef _POSIX_VERSION
+    struct Loadable_Module
+    {
+        struct DLModule
+        {
+           DLModule(const std::string &t_filename)
+             : m_data(dlopen(t_filename.c_str(), RTLD_NOW))
+           {
+              if (!m_data)
+              {
+                 throw load_module_error(dlerror());
+              }
+           }
+
+           ~DLModule()
+           {
+              dlclose(m_data);
+           }
+
+           void *m_data;
+        };
+
+        template<typename T>
+        struct DLSym
+        {
+            DLSym(DLModule &t_mod, const std::string &t_symbol)
+              : m_symbol(reinterpret_cast<T>(dlsym(t_mod.m_data, t_symbol.c_str())))
+            {
+              if (!m_symbol)
+              {
+                 throw load_module_error(dlerror());
+              }
+            }
+
+            T m_symbol;
+        };
+
+        Loadable_Module(const std::string &t_module_name, const std::string &t_filename)
+          : m_dlmodule(t_filename), m_func(m_dlmodule, "create_chaiscript_module_" + t_module_name)
+        {
+        }
+
+        ModulePtr get()
+        {
+          return m_func.m_symbol();
+        }
+
+        DLModule m_dlmodule;
+        DLSym<Create_Module_Func> m_func;
+    };
+#else
+
+#ifdef WIN32
+
+
+    struct Loadable_Module
+    {
+        template<typename T>
+        static std::wstring towstring(const T &str) 
+        {
+            return std::wstring(str.begin(), str.end());
+        }
+
+        template<typename T>
+        static std::string tostring(const T &str)
+        {
+            return std::string(str.begin(), str.end());
+        }
+
+#ifdef _UNICODE
+        template<typename T>
+        static std::wstring toproperstring(const T &str)
+        {
+            return towstring(str);
+        }
+#else
+        template<typename T>
+        static std::string toproperstring(const T &str)
+        {
+            return tostring(str);
+        }
+#endif
+
+        static std::string GetErrorMessage(DWORD err)
+        {
+#ifdef _UNICODE
+            typedef LPWSTR StringType;
+            std::wstring retval = L"Unknown Error";
+#else
+            typedef LPSTR StringType;
+            std::string retval = "Unknown Error";
+#endif
+            StringType lpMsgBuf = 0;
+
+            FormatMessage(
+                FORMAT_MESSAGE_ALLOCATE_BUFFER | 
+                FORMAT_MESSAGE_FROM_SYSTEM |
+                FORMAT_MESSAGE_IGNORE_INSERTS,
+                NULL,
+                err,
+                MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
+                (StringType)&lpMsgBuf,
+                0, NULL );        
+
+            if (lpMsgBuf)
+            {
+              retval = lpMsgBuf;
+            }
+
+            LocalFree(lpMsgBuf);
+            return tostring(retval);
+        }
+
+        struct DLModule
+        {
+           DLModule(const std::string &t_filename)
+             : m_data(LoadLibrary(toproperstring(t_filename).c_str()))
+           {
+              if (!m_data)
+              {
+                 throw load_module_error(GetErrorMessage(GetLastError()));
+              }
+           }
+
+           ~DLModule()
+           {
+              FreeLibrary(m_data);
+           }
+
+           HMODULE m_data;
+        };
+
+        template<typename T>
+        struct DLSym
+        {
+            DLSym(DLModule &t_mod, const std::string &t_symbol)
+              : m_symbol(reinterpret_cast<T>(GetProcAddress(t_mod.m_data, t_symbol.c_str())))
+            {
+              if (!m_symbol)
+              {
+                 throw load_module_error(GetErrorMessage(GetLastError()));
+              }
+            }
+
+            T m_symbol;
+        };
+
+        Loadable_Module(const std::string &t_module_name, const std::string &t_filename)
+          : m_dlmodule(t_filename), m_func(m_dlmodule, "create_chaiscript_module_" + t_module_name)
+        {
+        }
+
+        ModulePtr get()
+        {
+          return m_func.m_symbol();
+        }
+
+        DLModule m_dlmodule;
+        DLSym<Create_Module_Func> m_func;
+    };
+
+#else
+    struct Loadable_Module
+    {
+        Loadable_Module(const std::string &, const std::string &)
+        {
+          throw load_module_error("Loadable module support not available for your platform");
+        }
+
+        ModulePtr get()
+        {
+          throw load_module_error("Loadable module support not available for your platform");
+        }
+    };
+#endif
+#endif
+
+    typedef boost::shared_ptr<Loadable_Module> Loadable_Module_Ptr;
+
+
     template <typename Eval_Engine>
     class ChaiScript_System {
-        Eval_Engine engine;
+#ifndef CHAISCRIPT_NO_THREADS
+        mutable boost::shared_mutex mutex;
+        mutable boost::recursive_mutex use_mutex;
+#endif
 
         std::set<std::string> loaded_files;
+        std::map<std::string, Loadable_Module_Ptr> loaded_modules;
 
-        ChaiScript_Parser parser;
+        Eval_Engine engine;
 
 
         /**
          * Evaluates the given string in by parsing it and running the results through the evaluator
          */
-        Boxed_Value do_eval(const std::string &input, const std::string &filename = "__EVAL__") {
+        Boxed_Value do_eval(const std::string &input, const std::string &filename = "__EVAL__", bool internal = false) {
+            ChaiScript_Parser parser;
+
+            if (!internal)
+            {
+                engine.sync_cache();
+            }
+
             //debug_print(tokens);
             Boxed_Value value;
-            parser.clear_match_stack();
 
             // Keep a cache of all loaded filenames and use the char * from this cache to pass 
             // to the parser. This is so that the parser does not have the overhead of passing 
             // around and copying strings
-            loaded_files.insert(filename);
-
-            try {
-                if (parser.parse(input, loaded_files.find(filename)->c_str())) {
-                    //parser.show_match_stack();
-                    value = eval_token<Eval_Engine>(engine, parser.ast());
+            // 
+            if (filename != "__EVAL__")
+            {
+#ifndef CHAISCRIPT_NO_THREADS
+                boost::unique_lock<boost::shared_mutex> l(mutex);
+#endif
+                loaded_files.insert(filename);
+                try {
+                    if (parser.parse(input, loaded_files.find(filename)->c_str())) {
+#ifndef CHAISCRIPT_NO_THREADS
+                        l.unlock();
+#endif
+                        //parser.show_match_stack();
+                        value = eval_token<Eval_Engine>(engine, parser.ast());
+                    }
+                }
+                catch (const Return_Value &rv) {
+                    value = rv.retval;
+                }
+            } else {
+                try {
+#ifndef CHAISCRIPT_NO_THREADS
+                    boost::shared_lock<boost::shared_mutex> l(mutex);
+#endif
+                    const char *fname = loaded_files.find("__EVAL__")->c_str();
+#ifndef CHAISCRIPT_NO_THREADS
+                    l.unlock();
+#endif
+ 
+                    if (parser.parse(input, fname)) {
+                        //parser.show_match_stack();
+                        value = eval_token<Eval_Engine>(engine, parser.ast());
+                    }
+                }
+                catch (const Return_Value &rv) {
+                    value = rv.retval;
                 }
             }
-            catch (const Return_Value &rv) {
-                value = rv.retval;
+
+            if (!internal)
+            {
+                engine.sync_cache();
             }
 
             return value;
@@ -55,23 +296,44 @@ namespace chaiscript
          * Evaluates the given boxed string, used during eval() inside of a script
          */
         const Boxed_Value internal_eval(const std::vector<Boxed_Value> &vals) {
-            return do_eval(boxed_cast<std::string>(vals.at(0)));
+            return do_eval(boxed_cast<std::string>(vals.at(0)), "__EVAL__", true);
         }
 
         void use(const std::string &filename)
         {
+#ifndef CHAISCRIPT_NO_THREADS
+          boost::lock_guard<boost::recursive_mutex> l(use_mutex);
+          boost::shared_lock<boost::shared_mutex> l2(mutex);
+#endif
+
           if (loaded_files.count(filename) == 0)
           {
+#ifndef CHAISCRIPT_NO_THREADS
+            l2.unlock();
+#endif
             eval_file(filename);
+          } else {
+            engine.sync_cache();
           }
+
         }
 
 
     public:
         ChaiScript_System()  {
+            loaded_files.insert("__EVAL__"); // Make sure the default name is already registered
             build_eval_system();
         }
 
+        /**
+         * Adds a shared object, that can be used by all threads, to the system
+         */
+        ChaiScript_System &add_shared_object(const Boxed_Value &bv, const std::string &name)
+        {
+            engine.add_shared_object(bv, name);
+            return *this;
+        }
+
         /**
          * Adds an object to the system: type, function, object
          */
@@ -87,11 +349,61 @@ namespace chaiscript
          */
         ChaiScript_System &add(const ModulePtr &p)
         {
-            engine.add(p);
-
+            p->apply(*this, this->get_eval_engine());
             return *this;
         }
 
+        /**
+         * Load a dynamic library containing a chaiscript module
+         */
+        void load_module(const std::string &t_module_name)
+        {
+            std::vector<std::string> prefixes;
+            prefixes.push_back("lib");
+            prefixes.push_back("");
+
+            std::vector<std::string> postfixes;
+            postfixes.push_back(".dll");
+            postfixes.push_back(".so");
+            postfixes.push_back("");
+
+            for (size_t i = 0; i < prefixes.size(); ++i)
+            {
+                for (size_t j = 0; j < postfixes.size(); ++j)
+                {
+                    try {
+                        std::string name = prefixes[i] + t_module_name + postfixes[j];
+                        load_module(t_module_name, name);
+                        return;
+                    } catch (const load_module_error &) {
+                        // Try next set
+                    }
+                }
+            }
+
+            throw load_module_error("Unable to find module: " + t_module_name);
+        }
+
+        /**
+         * Load a dynamic library and provide the file name to load it from
+         */
+        void load_module(const std::string &t_module_name, const std::string &t_filename)
+        {
+#ifndef CHAISCRIPT_NO_THREADS
+            boost::lock_guard<boost::recursive_mutex> l(use_mutex);
+#endif
+
+            if (loaded_modules.count(t_module_name) == 0)
+            {
+                Loadable_Module_Ptr lm(new Loadable_Module(t_module_name, t_filename));
+                loaded_modules[t_module_name] = lm;
+                add(lm->get());
+            } else {
+                engine.sync_cache();
+            }
+        }
+
+
         /**
          * Helper for calling script code as if it were native C++ code
          * example:
@@ -175,28 +487,43 @@ namespace chaiscript
             engine.add_reserved_word("_");
 
 
-            engine.add(Bootstrap::bootstrap());
+            add(Bootstrap::bootstrap());
 
-            engine.add(fun(boost::function<void ()>(boost::bind(&dump_system, boost::ref(engine)))), "dump_system");
-            engine.add(fun(boost::function<void (Boxed_Value)>(boost::bind(&dump_object, _1, boost::ref(engine)))), "dump_object");
-            engine.add(fun(boost::function<bool (Boxed_Value, const std::string &)>(boost::bind(&is_type, boost::ref(engine), _2, _1))),
+            engine.add(fun(boost::function<void ()>(boost::bind(&Eval_Engine::dump_system, boost::ref(engine)))), "dump_system");
+            engine.add(fun(boost::function<void (Boxed_Value)>(boost::bind(&Eval_Engine::dump_object, boost::ref(engine), _1))), "dump_object");
+            engine.add(fun(boost::function<bool (Boxed_Value, const std::string &)>(boost::bind(&Eval_Engine::is_type, boost::ref(engine), _2, _1))),
                 "is_type");
 
-            engine.add(fun(boost::function<std::string (Boxed_Value)>(boost::bind(&chaiscript::type_name, boost::ref(engine), _1))),
+            engine.add(fun(boost::function<std::string (Boxed_Value)>(boost::bind(&Eval_Engine::type_name, boost::ref(engine), _1))),
                 "type_name");
             engine.add(fun(boost::function<bool (const std::string &)>(boost::bind(&Eval_Engine::function_exists, boost::ref(engine), _1))),
                 "function_exists");
 
-            engine.add(vector_type<std::vector<Boxed_Value> >("Vector"));
-            engine.add(string_type<std::string>("string"));
-            engine.add(map_type<std::map<std::string, Boxed_Value> >("Map"));
-            engine.add(pair_type<std::pair<Boxed_Value, Boxed_Value > >("Pair"));
+
+            engine.add(fun(boost::function<void (const std::string &)>(
+                    boost::bind(static_cast<void (ChaiScript_System<Eval_Engine>::*)(const std::string&)>(
+                        &ChaiScript_System<Eval_Engine>::load_module), boost::ref(*this), _1))),
+                "load_module");
+
+            engine.add(fun(boost::function<void (const std::string &, const std::string &)>(
+                    boost::bind(static_cast<void (ChaiScript_System<Eval_Engine>::*)(const std::string&, const std::string&)>(
+                        &ChaiScript_System<Eval_Engine>::load_module), boost::ref(*this), _1, _2))),
+                "load_module");
+
+            add(vector_type<std::vector<Boxed_Value> >("Vector"));
+            add(string_type<std::string>("string"));
+            add(map_type<std::map<std::string, Boxed_Value> >("Map"));
+            add(pair_type<std::pair<Boxed_Value, Boxed_Value > >("Pair"));
 
             engine.add(fun(boost::function<void (const std::string &)>(boost::bind(&ChaiScript_System<Eval_Engine>::use, this, _1))), "use");
 
             engine.add(Proxy_Function(
                   new Dynamic_Proxy_Function(boost::bind(&ChaiScript_System<Eval_Engine>::internal_eval, boost::ref(*this), _1), 1)), "eval");
 
+
+
+
+
             do_eval(chaiscript_prelude, "standard prelude");
         }
 

include/chaiscript/language/chaiscript_eval.hpp

@@ -15,34 +15,31 @@ namespace chaiscript
      * Helper function that will set up the scope around a function call, including handling the named function parameters
      */
     template <typename Eval_System>
-    const Boxed_Value eval_function (Eval_System &ss, TokenPtr node, const std::vector<std::string> &param_names, const std::vector<Boxed_Value> &vals) {
+    const Boxed_Value eval_function (Eval_System &ss, const TokenPtr &node, const std::vector<std::string> &param_names, const std::vector<Boxed_Value> &vals) {
         ss.new_scope();
 
         for (unsigned int i = 0; i < param_names.size(); ++i) {
             ss.add_object(param_names[i], vals[i]);
         }
 
-        Boxed_Value retval;
-
         try {
-            retval = eval_token(ss, node);
+            Boxed_Value retval(eval_token(ss, node));
             ss.pop_scope();
+            return retval;
         } catch (const Return_Value &rv) {
-            retval = rv.retval;
             ss.pop_scope();
+            return rv.retval;
         } catch (...) {
             ss.pop_scope();
             throw;
         }
-
-        return retval;
     }
 
     /**
      * Evaluates the top-level file node
      */
     template <typename Eval_System>
-    Boxed_Value eval_file(Eval_System &ss, TokenPtr node) {
+    Boxed_Value eval_file(Eval_System &ss, const TokenPtr &node) {
         Boxed_Value retval;
         unsigned int i;
         for (i = 0; i < node->children.size(); ++i) {
@@ -51,17 +48,44 @@ namespace chaiscript
         return retval;
     }
 
+    template <typename Eval_System>
+    void cache_const(Eval_System &/*ss*/, const TokenPtr &node, const Boxed_Value &value) {
+        node->cached_value = value;
+        node->is_cached = true;
+    }
     /**
      * Evaluates a variable or function name identifier
      */
     template <typename Eval_System>
-    Boxed_Value eval_id(Eval_System &ss, TokenPtr node) {
+    Boxed_Value eval_id(Eval_System &ss, const TokenPtr &node) {
 
         if (node->text == "true") {
-            return Boxed_Value(true);
+            //return const_var(true);
+            if (!node->is_cached) {
+                cache_const(ss, node, const_var(true));
+            }
+            return node->cached_value;
         }
         else if (node->text == "false") {
-            return Boxed_Value(false);
+            //return const_var(false);
+            if (!node->is_cached) {
+                cache_const(ss, node, const_var(false));
+            }
+            return node->cached_value;
+        }
+        else if (node->text == "Infinity") {
+            //return const_var(false);
+            if (!node->is_cached) {
+                cache_const(ss, node, const_var(std::numeric_limits<double>::infinity()));
+            }
+            return node->cached_value;
+        }
+        else if (node->text == "NaN") {
+            //return const_var(false);
+            if (!node->is_cached) {
+                cache_const(ss, node, const_var(std::numeric_limits<double>::quiet_NaN()));
+            }
+            return node->cached_value;
         }
         else {
             try {
@@ -77,61 +101,97 @@ namespace chaiscript
      * Evaluates a floating point number
      */
     template <typename Eval_System>
-    Boxed_Value eval_float(Eval_System &, TokenPtr node) {
-        return Boxed_Value(double(atof(node->text.c_str())));
+    Boxed_Value eval_float(Eval_System &ss, const TokenPtr &node) {
+        //return const_var(double(atof(node->text.c_str())));
+
+        if (!node->is_cached) {
+            cache_const(ss, node, const_var(double(atof(node->text.c_str()))));
+        }
+        return node->cached_value;
     }
 
     /**
      * Evaluates an integer
      */
     template <typename Eval_System>
-    Boxed_Value eval_int(Eval_System &, TokenPtr node) {
-        return Boxed_Value(atoi(node->text.c_str()));
+    Boxed_Value eval_int(Eval_System &ss, const TokenPtr &node) {
+        //return const_var(atoi(node->text.c_str()));
+
+        if (!node->is_cached) {
+            cache_const(ss, node, const_var(int(atoi(node->text.c_str()))));
+        }
+        return node->cached_value;
     }
 
     /**
      * Evaluates a quoted string
      */
     template <typename Eval_System>
-    Boxed_Value eval_quoted_string(Eval_System &, TokenPtr node) {
-        return Boxed_Value(node->text);
+    Boxed_Value eval_quoted_string(Eval_System &ss, const TokenPtr &node) {
+        //return const_var(node->text);
+
+        /*
+        if ((node->text.size() > 0) && (node->text[0] == '$')) {
+            node->text.erase(0, 1);
+            Param_List_Builder plb;
+            plb << node->text;
+
+            return ss.call_function("eval", plb);
+        }
+        */
+        if (!node->is_cached) {
+            cache_const(ss, node, const_var(node->text));
+        }
+        return node->cached_value;
     }
 
     /**
      * Evaluates a char group
      */
     template <typename Eval_System>
-    Boxed_Value eval_single_quoted_string(Eval_System &, TokenPtr node) {
+    Boxed_Value eval_single_quoted_string(Eval_System &ss, const TokenPtr &node) {
+        /*
         if (node->text.size() == 1) {
-            return Boxed_Value(char(node->text[0]));
+            //return Boxed_Value(char(node->text[0]));
+            return const_var(char(node->text[0]));
         }
         else {
-            return Boxed_Value(char((int)node->text[0] * 0xff + (int)node->text[0]));
+            //return Boxed_Value(char((int)node->text[0] * 0xff + (int)node->text[0]));
+            return const_var(char((int)node->text[0] * 0xff + (int)node->text[0]));
         }
+        */
+
+        if (!node->is_cached) {
+            cache_const(ss, node,
+                node->text.size() == 1 ?
+                        const_var(char(node->text[0])) :
+                        const_var(char((int)node->text[0] * 0xff + (int)node->text[0])));
+        }
+        return node->cached_value;
     }
 
     /**
      * Evaluates a string of equations in reverse order so that the right-most side has precedence
      */
     template <typename Eval_System>
-    Boxed_Value eval_equation(Eval_System &ss, TokenPtr node) {
-        Boxed_Value retval;
+    Boxed_Value eval_equation(Eval_System &ss, const TokenPtr &node) {
         unsigned int i;
-        retval = eval_token(ss, node->children.back());
+        Boxed_Value retval = eval_token(ss, node->children.back());
         if (node->children.size() > 1) {
             for (i = node->children.size()-3; ((int)i) >= 0; i -= 2) {
                 if (node->children[i+1]->text == "=") {
                     Boxed_Value lhs = eval_token(ss, node->children[i]);
+
                     try {
                         if (lhs.is_unknown())
                         {
-                          retval = dispatch(ss.get_function("clone"), Param_List_Builder() << retval);
+                          retval = ss.call_function("clone", Param_List_Builder() << retval);
                         }
                         Param_List_Builder plb;
                         plb << lhs;
                         plb << retval;
                         try {
-                            retval = dispatch(ss.get_function(node->children[i+1]->text), plb);
+                            retval = ss.call_function(node->children[i+1]->text, plb);
                         }
                         catch(const dispatch_error &){
                             throw Eval_Error("Mismatched types in equation", node->children[i+1]);
@@ -155,7 +215,7 @@ namespace chaiscript
                     plb << eval_token(ss, node->children[i]);
                     plb << retval;
                     try {
-                        retval = dispatch(ss.get_function(node->children[i+1]->text), plb);
+                        retval = ss.call_function(node->children[i+1]->text, plb);
                     }
                     catch(const dispatch_error &){
                         throw Eval_Error("Can not find appropriate '" + node->children[i+1]->text + "'", node->children[i+1]);
@@ -170,25 +230,40 @@ namespace chaiscript
      * Evaluates a variable declaration
      */
     template <typename Eval_System>
-    Boxed_Value eval_var_decl(Eval_System &ss, TokenPtr node) {
+    Boxed_Value eval_var_decl(Eval_System &ss, const TokenPtr &node) {
         try {
             ss.add_object(node->children[0]->text, Boxed_Value());
         }
-        catch (reserved_word_error &rwe) {
+        catch (reserved_word_error &) {
             throw Eval_Error("Reserved word used as variable '" + node->children[0]->text + "'", node);
         }
         return ss.get_object(node->children[0]->text);
     }
 
+    /**
+     * Evaluates an attribute declaration
+     */
+    template <typename Eval_System>
+    Boxed_Value eval_attr_decl(Eval_System &ss, const TokenPtr &node) {
+        try {
+            ss.add(fun(boost::function<Boxed_Value (Dynamic_Object &)>(boost::bind(&Dynamic_Object_Attribute::func, node->children[0]->text,
+                    node->children[1]->text, _1))), node->children[1]->text);
+
+        }
+        catch (reserved_word_error &) {
+            throw Eval_Error("Reserved word used as attribute '" + node->children[1]->text + "'", node);
+        }
+        return Boxed_Value();
+    }
+
     /**
      * Evaluates binary boolean operators.  Respects short-circuiting rules.
      */
     template <typename Eval_System>
-    Boxed_Value eval_expression(Eval_System &ss, TokenPtr node) {
-        Boxed_Value retval;
+    Boxed_Value eval_expression(Eval_System &ss, const TokenPtr &node) {
         unsigned int i;
 
-        retval = eval_token(ss, node->children[0]);
+        Boxed_Value retval = eval_token(ss, node->children[0]);
         if (node->children.size() > 1) {
             for (i = 1; i < node->children.size(); i += 2) {
                 bool lhs;
@@ -223,11 +298,10 @@ namespace chaiscript
      * Evaluates comparison, additions, and multiplications and their relatives
      */
     template <typename Eval_System>
-    Boxed_Value eval_comp_add_mul(Eval_System &ss, TokenPtr node) {
-        Boxed_Value retval;
+    Boxed_Value eval_comp_add_mul(Eval_System &ss, const TokenPtr &node) {
         unsigned int i;
 
-        retval = eval_token(ss, node->children[0]);
+        Boxed_Value retval = eval_token(ss, node->children[0]);
         if (node->children.size() > 1) {
             for (i = 1; i < node->children.size(); i += 2) {
                 Param_List_Builder plb;
@@ -235,7 +309,7 @@ namespace chaiscript
                 plb << eval_token(ss, node->children[i + 1]);
 
                 try {
-                    retval = dispatch(ss.get_function(node->children[i]->text), plb);
+                    retval = ss.call_function(node->children[i]->text, plb);
                 }
                 catch(const dispatch_error &){
                     throw Eval_Error("Can not find appropriate '" + node->children[i]->text + "'", node->children[i]);
@@ -250,17 +324,16 @@ namespace chaiscript
      * Evaluates an array lookup
      */
     template <typename Eval_System>
-    Boxed_Value eval_array_call(Eval_System &ss, TokenPtr node) {
-        Boxed_Value retval;
+    Boxed_Value eval_array_call(Eval_System &ss, const TokenPtr &node) {
         unsigned int i;
 
-        retval = eval_token(ss, node->children[0]);
+        Boxed_Value retval = eval_token(ss, node->children[0]);
         for (i = 1; i < node->children.size(); ++i) {
             Param_List_Builder plb;
             plb << retval;
             plb << eval_token(ss, node->children[i]);
             try {
-                retval = dispatch(ss.get_function("[]"), plb);
+                retval = ss.call_function("[]", plb);
             }
             catch(std::out_of_range &) {
                 throw Eval_Error("Out of bounds exception", node);
@@ -277,16 +350,14 @@ namespace chaiscript
      * Evaluates a unary negation
      */
     template <typename Eval_System>
-    Boxed_Value eval_negate(Eval_System &ss, TokenPtr node) {
-        Boxed_Value retval;
-
-        retval = eval_token(ss, node->children[0]);
+    Boxed_Value eval_negate(Eval_System &ss, const TokenPtr &node) {
+        Boxed_Value retval = eval_token(ss, node->children[0]);
         Param_List_Builder plb;
         plb << retval;
         plb << Boxed_Value(-1.0);
 
         try {
-            return dispatch(ss.get_function("*"), plb);
+            return ss.call_function("*", plb);
         }
         catch(std::exception &){
             throw Eval_Error("Can not find appropriate negation", node->children[0]);
@@ -297,33 +368,25 @@ namespace chaiscript
      * Evaluates a unary boolean not
      */
     template <typename Eval_System>
-    Boxed_Value eval_not(Eval_System &ss, TokenPtr node) {
-        Boxed_Value retval;
-
-        bool cond;
+    Boxed_Value eval_not(Eval_System &ss, const TokenPtr &node) {
         try {
-            retval = eval_token(ss, node->children[0]);
-            cond = boxed_cast<bool &>(retval);
+            return Boxed_Value(!boxed_cast<bool>(eval_token(ss, node->children[0])));
         }
         catch (const bad_boxed_cast &) {
             throw Eval_Error("Boolean not('!') condition not boolean", node->children[0]);
         }
-        return Boxed_Value(!cond);
     }
 
     /**
      * Evaluates any unary prefix
      */
     template <typename Eval_System>
-    Boxed_Value eval_prefix(Eval_System &ss, TokenPtr node) {
-        Boxed_Value retval;
-
-        retval = eval_token(ss, node->children[1]);
+    Boxed_Value eval_prefix(Eval_System &ss, const TokenPtr &node) {
         Param_List_Builder plb;
-        plb << retval;
+        plb << eval_token(ss, node->children[1]);
 
         try {
-            return dispatch(ss.get_function(node->children[0]->text), plb);
+            return ss.call_function(node->children[0]->text, plb);
         }
         catch(std::exception &){
             throw Eval_Error("Can not find appropriate prefix", node->children[0]);
@@ -334,38 +397,38 @@ namespace chaiscript
      * Evaluates (and generates) an inline array initialization
      */
     template <typename Eval_System>
-    Boxed_Value eval_inline_array(Eval_System &ss, TokenPtr node) {
-        Boxed_Value retval;
+    Boxed_Value eval_inline_array(Eval_System &ss, const TokenPtr &node) {
         unsigned int i;
 
         try {
-            retval = dispatch(ss.get_function("Vector"), Param_List_Builder());
+            Boxed_Value retval = ss.call_function("Vector", Param_List_Builder());
             if (node->children.size() > 0) {
                 for (i = 0; i < node->children[0]->children.size(); ++i) {
                     try {
                         Boxed_Value tmp = eval_token(ss, node->children[0]->children[i]);
-                        dispatch(ss.get_function("push_back"), Param_List_Builder() << retval << tmp);
+                        ss.call_function("push_back", Param_List_Builder() << retval << tmp);
                     }
                     catch (const dispatch_error &) {
                         throw Eval_Error("Can not find appropriate 'push_back'", node->children[0]->children[i]);
                     }
                 }
             }
+
+            return retval;
         }
         catch (const dispatch_error &) {
             throw Eval_Error("Can not find appropriate 'Vector()'", node);
         }
 
-        return retval;
     }
 
     /**
      * Evaluates (and generates) an inline range initialization
      */
     template <typename Eval_System>
-    Boxed_Value eval_inline_range(Eval_System &ss, TokenPtr node) {
+    Boxed_Value eval_inline_range(Eval_System &ss, const TokenPtr &node) {
         try {
-            return dispatch(ss.get_function("generate_range"), Param_List_Builder()
+            return ss.call_function("generate_range", Param_List_Builder()
                 << eval_token(ss, node->children[0]->children[0]->children[0])
                 << eval_token(ss, node->children[0]->children[0]->children[1]));
         }
@@ -378,93 +441,123 @@ namespace chaiscript
      * Evaluates (and generates) an inline map initialization
      */
     template <typename Eval_System>
-    Boxed_Value eval_inline_map(Eval_System &ss, TokenPtr node) {
-        Boxed_Value retval;
+    Boxed_Value eval_inline_map(Eval_System &ss, const TokenPtr &node) {
         unsigned int i;
 
         try {
-            retval = dispatch(ss.get_function("Map"), Param_List_Builder());
+            Boxed_Value retval = ss.call_function("Map", Param_List_Builder());
             for (i = 0; i < node->children[0]->children.size(); ++i) {
                 try {
                     Boxed_Value key = eval_token(ss, node->children[0]->children[i]->children[0]);
-                    Boxed_Value slot = dispatch(ss.get_function("[]"), Param_List_Builder() << retval << key);
-                    dispatch(ss.get_function("="), Param_List_Builder() << slot << eval_token(ss, node->children[0]->children[i]->children[1]));
+                    Boxed_Value slot = ss.call_function("[]", Param_List_Builder() << retval << key);
+                    ss.call_function("=", Param_List_Builder() << slot << eval_token(ss, node->children[0]->children[i]->children[1]));
                 }
                 catch (const dispatch_error &) {
                     throw Eval_Error("Can not find appropriate '=' for map init", node->children[0]->children[i]);
                 }
             }
+            return retval;
         }
         catch (const dispatch_error &) {
             throw Eval_Error("Can not find appropriate 'Map()'", node);
         }
-
-        return retval;
     }
 
     /**
      * Evaluates a function call, starting with its arguments.  Handles resetting the scope to the previous one after the call.
      */
     template <typename Eval_System>
-    Boxed_Value eval_fun_call(Eval_System &ss, TokenPtr node) {
-        Boxed_Value retval;
+    Boxed_Value eval_fun_call(Eval_System &ss, const TokenPtr &node) {
         Param_List_Builder plb;
         Dispatch_Engine::Stack prev_stack = ss.get_stack();
         Dispatch_Engine::Stack new_stack = ss.new_stack();
         unsigned int i;
 
-        new_stack->push_back(Dispatch_Engine::Scope());
-
         if ((node->children.size() > 1) && (node->children[1]->identifier == Token_Type::Arg_List)) {
             for (i = 0; i < node->children[1]->children.size(); ++i) {
                 plb << eval_token(ss, node->children[1]->children[i]);
             }
         }
-        Boxed_Value fn;
+
         try {
-            fn = eval_token(ss, node->children[0]);
+            Boxed_Value fn = eval_token(ss, node->children[0]);
+
+            try {
+                ss.set_stack(new_stack);
+                Boxed_Value retval = (*boxed_cast<Const_Proxy_Function>(fn))(plb);
+                ss.set_stack(prev_stack);
+                return retval;
+            }
+            catch(const dispatch_error &e){
+                ss.set_stack(prev_stack);
+                throw Eval_Error(std::string(e.what()) + " with function '" + node->children[0]->text + "'", node->children[0]);
+            }
+            catch(Return_Value &rv) {
+                ss.set_stack(prev_stack);
+                return rv.retval;
+            }
+            catch(...) {
+                ss.set_stack(prev_stack);
+                throw;
+            }
         }
         catch(Eval_Error &ee) {
             ss.set_stack(prev_stack);
             throw Eval_Error(ee.reason, node->children[0]);
         }
-        try {
-            ss.set_stack(new_stack);
-            retval = (*boxed_cast<Proxy_Function >(fn))(plb);
-            ss.set_stack(prev_stack);
-        }
-        catch(const dispatch_error &e){
-            ss.set_stack(prev_stack);
-            throw Eval_Error(std::string(e.what()) + " with function '" + node->children[0]->text + "'", node->children[0]);
-        }
-        catch(Return_Value &rv) {
-            ss.set_stack(prev_stack);
-            retval = rv.retval;
-        }
-        catch(...) {
-            ss.set_stack(prev_stack);
-            throw;
+
+    }
+
+    /**
+     * Evaluates a function call, starting with its arguments.  Does NOT change scope.
+     */
+    template <typename Eval_System>
+    Boxed_Value eval_inplace_fun_call(Eval_System &ss, const TokenPtr &node) {
+        Param_List_Builder plb;
+        unsigned int i;
+
+        if ((node->children.size() > 1) && (node->children[1]->identifier == Token_Type::Arg_List)) {
+            for (i = 0; i < node->children[1]->children.size(); ++i) {
+                plb << eval_token(ss, node->children[1]->children[i]);
+            }
+        }
+
+        try {
+            Boxed_Value fn = eval_token(ss, node->children[0]);
+
+            try {
+                Boxed_Value retval = (*boxed_cast<Const_Proxy_Function >(fn))(plb);
+                return retval;
+            }
+            catch(const dispatch_error &e){
+                throw Eval_Error(std::string(e.what()) + " with function '" + node->children[0]->text + "'", node->children[0]);
+            }
+            catch(Return_Value &rv) {
+                return rv.retval;
+            }
+            catch(...) {
+                throw;
+            }
+        }
+        catch(Eval_Error &ee) {
+            throw Eval_Error(ee.reason, node->children[0]);
         }
 
-        return retval;
     }
 
     /**
      * Evaluates a method/attributes invocation
      */
     template <typename Eval_System>
-    Boxed_Value eval_dot_access(Eval_System &ss, TokenPtr node) {
-        Boxed_Value retval;
+    Boxed_Value eval_dot_access(Eval_System &ss, const TokenPtr &node) {
         std::vector<std::pair<std::string, Proxy_Function > > fn;
         Dispatch_Engine::Stack prev_stack = ss.get_stack();
         Dispatch_Engine::Stack new_stack = ss.new_stack();
         unsigned int i, j;
 
-        new_stack->push_back(Dispatch_Engine::Scope());
-
         //todo: Please extract a single way of doing function calls between this and eval_fun_call
 
-        retval = eval_token(ss, node->children[0]);
+        Boxed_Value retval = eval_token(ss, node->children[0]);
         if (node->children.size() > 1) {
             for (i = 1; i < node->children.size(); ++i) {
                 Param_List_Builder plb;
@@ -496,7 +589,7 @@ namespace chaiscript
                     //fn = ss.get_function(fun_name);
                     ss.set_stack(new_stack);
                     //retval = dispatch(fn, plb);
-                    retval = (*boxed_cast<Proxy_Function >(fn))(plb);
+                    retval = (*boxed_cast<Const_Proxy_Function >(fn))(plb);
                     ss.set_stack(prev_stack);
                 }
                 catch(const dispatch_error &e){
@@ -521,14 +614,141 @@ namespace chaiscript
      * Evaluates an if/elseif/else block
      */
     template <typename Eval_System>
-    Boxed_Value eval_if(Eval_System &ss, TokenPtr node) {
-        Boxed_Value retval;
+    Boxed_Value eval_try(Eval_System &ss, const TokenPtr &node) {
+        Boxed_Value retval;        
+        retval = Boxed_Value();
+
+        ss.new_scope();
+        try {
+            retval = eval_token(ss, node->children[0]);
+        }
+        catch (const Eval_Error &) {
+            if (node->children.back()->identifier == Token_Type::Finally) {
+                eval_token(ss, node->children.back()->children[0]);
+            }
+            ss.pop_scope();
+            throw;
+        }
+        catch (const std::exception &e) {
+            Boxed_Value except = Boxed_Value(boost::ref(e));
+
+            unsigned int end_point = node->children.size();
+            if (node->children.back()->identifier == Token_Type::Finally) {
+                end_point = node->children.size() - 1;
+            }
+            for (unsigned int i = 1; i < end_point; ++i) {
+                TokenPtr catch_block = node->children[i];
+
+                if (catch_block->children.size() == 1) {
+                    //No variable capture, no guards
+                    retval = eval_token(ss, catch_block->children[0]);
+                    break;
+                }
+                else if (catch_block->children.size() == 2) {
+                    //Variable capture, no guards
+                    ss.add_object(catch_block->children[0]->text, except);
+                    retval = eval_token(ss, catch_block->children[1]);
+                    break;
+                }
+                else if (catch_block->children.size() == 3) {
+                    //Variable capture, no guards
+                    ss.add_object(catch_block->children[0]->text, except);
+
+                    bool guard;
+                    try {
+                        guard = boxed_cast<bool>(eval_token(ss, catch_block->children[1]));
+                    } catch (const bad_boxed_cast &) {
+                        if (node->children.back()->identifier == Token_Type::Finally) {
+                            eval_token(ss, node->children.back()->children[0]);
+                        }
+                        ss.pop_scope();
+                        throw Eval_Error("Guard condition not boolean", catch_block->children[1]);
+                    }
+                    if (guard) {
+                        retval = eval_token(ss, catch_block->children[2]);
+                        break;
+                    }
+                }
+                else {
+                    if (node->children.back()->identifier == Token_Type::Finally) {
+                        eval_token(ss, node->children.back()->children[0]);
+                    }
+                    ss.pop_scope();
+                    throw Eval_Error("Internal error: catch block size unrecognized", catch_block);
+                }
+            }
+        }
+        catch (Boxed_Value &bv) {
+            Boxed_Value except = bv;
+            for (unsigned int i = 1; i < node->children.size(); ++i) {
+                TokenPtr catch_block = node->children[i];
+
+                if (catch_block->children.size() == 1) {
+                    //No variable capture, no guards
+                    retval = eval_token(ss, catch_block->children[0]);
+                    break;
+                }
+                else if (catch_block->children.size() == 2) {
+                    //Variable capture, no guards
+                    ss.add_object(catch_block->children[0]->text, except);
+                    retval = eval_token(ss, catch_block->children[1]);
+                    break;
+                }
+                else if (catch_block->children.size() == 3) {
+                    //Variable capture, no guards
+                    ss.add_object(catch_block->children[0]->text, except);
+
+                    bool guard;
+                    try {
+                        guard = boxed_cast<bool>(eval_token(ss, catch_block->children[1]));
+                    } catch (const bad_boxed_cast &) {
+                        if (node->children.back()->identifier == Token_Type::Finally) {
+                            eval_token(ss, node->children.back()->children[0]);
+                        }
+                        ss.pop_scope();
+                        throw Eval_Error("Guard condition not boolean", catch_block->children[1]);
+                    }
+                    if (guard) {
+                        retval = eval_token(ss, catch_block->children[2]);
+                        break;
+                    }
+                }
+                else {
+                    if (node->children.back()->identifier == Token_Type::Finally) {
+                        eval_token(ss, node->children.back()->children[0]);
+                    }
+                    ss.pop_scope();
+                    throw Eval_Error("Internal error: catch block size unrecognized", catch_block);
+                }
+            }
+        }
+        catch (...) {
+            if (node->children.back()->identifier == Token_Type::Finally) {
+                eval_token(ss, node->children.back()->children[0]);
+            }
+            ss.pop_scope();
+            throw;
+        }
+        if (node->children.back()->identifier == Token_Type::Finally) {
+            retval = eval_token(ss, node->children.back()->children[0]);
+        }
+
+        ss.pop_scope();
+
+        return retval;
+    }
+
+    /**
+     * Evaluates an if/elseif/else block
+     */
+    template <typename Eval_System>
+    Boxed_Value eval_if(Eval_System &ss, const TokenPtr &node) {
         unsigned int i;
 
-        retval = eval_token(ss, node->children[0]);
+        Boxed_Value retval = eval_token(ss, node->children[0]);
         bool cond;
         try {
-            cond = boxed_cast<bool &>(retval);
+            cond = boxed_cast<bool>(retval);
         }
         catch (const bad_boxed_cast &) {
             throw Eval_Error("If condition not boolean", node->children[0]);
@@ -547,7 +767,7 @@ namespace chaiscript
                     else if (node->children[i]->text == "else if") {
                         retval = eval_token(ss, node->children[i+1]);
                         try {
-                            cond = boxed_cast<bool &>(retval);
+                            cond = boxed_cast<bool>(retval);
                         }
                         catch (const bad_boxed_cast &) {
                             throw Eval_Error("'else if' condition not boolean", node->children[i+1]);
@@ -568,13 +788,13 @@ namespace chaiscript
      * Evaluates a while block
      */
     template <typename Eval_System>
-    Boxed_Value eval_while(Eval_System &ss, TokenPtr node) {
+    Boxed_Value eval_while(Eval_System &ss, const TokenPtr &node) {
         bool cond;
 
         ss.new_scope();
 
         try {
-            cond = boxed_cast<bool &>(eval_token(ss, node->children[0]));
+            cond = boxed_cast<bool>(eval_token(ss, node->children[0]));
         }
         catch (const bad_boxed_cast &) {
             ss.pop_scope();
@@ -584,7 +804,7 @@ namespace chaiscript
             try {
                 eval_token(ss, node->children[1]);
                 try {
-                    cond = boxed_cast<bool &>(eval_token(ss, node->children[0]));
+                    cond = boxed_cast<bool>(eval_token(ss, node->children[0]));
                 }
                 catch (const bad_boxed_cast &) {
                     ss.pop_scope();
@@ -603,7 +823,7 @@ namespace chaiscript
      * Evaluates a for block, including the for's conditions, from left to right
      */
     template <typename Eval_System>
-    Boxed_Value eval_for(Eval_System &ss, TokenPtr node) {
+    Boxed_Value eval_for(Eval_System &ss, const TokenPtr &node) {
         bool cond;
 
         ss.new_scope();
@@ -611,10 +831,10 @@ namespace chaiscript
         try {
             if (node->children.size() == 4) {
                 eval_token(ss, node->children[0]);
-                cond = boxed_cast<bool &>(eval_token(ss, node->children[1]));
+                cond = boxed_cast<bool>(eval_token(ss, node->children[1]));
             }
             else {
-                cond = boxed_cast<bool &>(eval_token(ss, node->children[0]));
+                cond = boxed_cast<bool>(eval_token(ss, node->children[0]));
             }
         }
         catch (const bad_boxed_cast &) {
@@ -626,12 +846,12 @@ namespace chaiscript
                 if (node->children.size() == 4) {
                     eval_token(ss, node->children[3]);
                     eval_token(ss, node->children[2]);
-                    cond = boxed_cast<bool &>(eval_token(ss, node->children[1]));
+                    cond = boxed_cast<bool>(eval_token(ss, node->children[1]));
                 }
                 else {
                     eval_token(ss, node->children[2]);
                     eval_token(ss, node->children[1]);
-                    cond = boxed_cast<bool &>(eval_token(ss, node->children[0]));
+                    cond = boxed_cast<bool>(eval_token(ss, node->children[0]));
                 }
             }
             catch (const bad_boxed_cast &) {
@@ -650,8 +870,7 @@ namespace chaiscript
      * Evaluates a function definition
      */
     template <typename Eval_System>
-    Boxed_Value eval_def(Eval_System &ss, TokenPtr node) {
-        Boxed_Value retval;
+    Boxed_Value eval_def(Eval_System &ss, const TokenPtr &node) {
         unsigned int i;
 
         std::vector<std::string> param_names;
@@ -694,18 +913,92 @@ namespace chaiscript
                                                                  param_names, _1), numparams,
                                                      annotation, guard)), function_name);
         }
-        catch (reserved_word_error &rwe) {
+        catch (reserved_word_error &) {
             throw Eval_Error("Reserved word used as function name '" + function_name + "'", node);
         }
-        return retval;
+        return Boxed_Value();
+    }
+
+    /**
+     * Evaluates a function definition
+     */
+    template <typename Eval_System>
+    Boxed_Value eval_def_method(Eval_System &ss, const TokenPtr &node) {
+        //TODO: Merge with eval_def cleanly someday?
+        unsigned int i;
+
+        std::vector<std::string> param_names;
+        std::string annotation = node->annotation?node->annotation->text:"";
+        boost::shared_ptr<Dynamic_Proxy_Function> guard;
+        size_t numparams;
+        std::string class_name = node->children[0]->text;
+        std::string function_name = node->children[1]->text;
+        TokenPtr guardnode;
+
+        //The first param of a method is always the implied this ptr.
+        param_names.push_back("this");
+
+        if ((node->children.size() > 3) && (node->children[2]->identifier == Token_Type::Arg_List)) {
+            for (i = 0; i < node->children[2]->children.size(); ++i) {
+                param_names.push_back(node->children[2]->children[i]->text);
+            }
+
+            if (node->children.size() > 4) {
+                guardnode = node->children[3];
+            }
+        }
+        else {
+            //no parameters
+
+            if (node->children.size() > 3) {
+                guardnode = node->children[2];
+            }
+        }
+
+        numparams = param_names.size();
+
+        if (guardnode) {
+            guard = boost::shared_ptr<Dynamic_Proxy_Function>
+                (new Dynamic_Proxy_Function(boost::bind(&eval_function<Eval_System>,
+                                                                     boost::ref(ss), guardnode,
+                                                                     param_names, _1), numparams));
+        }
+
+        try {
+            if (function_name == class_name) {
+                ss.add(Proxy_Function
+                    (new Dynamic_Object_Constructor(class_name, Proxy_Function(new Dynamic_Proxy_Function(boost::bind(&eval_function<Eval_System>,
+                                                                 boost::ref(ss), node->children.back(),
+                                                                 param_names, _1), numparams,
+                                                     annotation, guard)))), function_name);
+
+            }
+            else {
+                boost::optional<chaiscript::Type_Info> ti;
+                try {
+                    ti = ss.get_type(class_name);
+                } catch (const std::range_error &) {
+                    // No biggie, the type name is just not known
+                }
+                ss.add(Proxy_Function
+                    (new Dynamic_Object_Function(class_name, Proxy_Function(new Dynamic_Proxy_Function(boost::bind(&eval_function<Eval_System>,
+                                                                 boost::ref(ss), node->children.back(),
+                                                                 param_names, _1), numparams,
+                                                     annotation, guard)), ti)), function_name);
+
+            }
+        }
+        catch (reserved_word_error &) {
+            throw Eval_Error("Reserved word used as method name '" + function_name + "'", node);
+        }
+        return Boxed_Value();
     }
 
     /**
      * Evaluates a lambda (anonymous function)
      */
     template <typename Eval_System>
-    Boxed_Value eval_lambda(Eval_System &ss, TokenPtr node) {
-        Boxed_Value retval;
+    Boxed_Value eval_lambda(Eval_System &ss, const TokenPtr &node) {
         unsigned int i;
 
         std::vector<std::string> param_names;
@@ -732,7 +1025,7 @@ namespace chaiscript
      * Evaluates a scoped block.  Handles resetting the scope after the block has completed.
      */
     template <typename Eval_System>
-    Boxed_Value eval_block(Eval_System &ss, TokenPtr node) {
+    Boxed_Value eval_block(Eval_System &ss, const TokenPtr &node) {
         Boxed_Value retval;
         unsigned int i;
 
@@ -760,22 +1053,20 @@ namespace chaiscript
      * Evaluates a return statement
      */
     template <typename Eval_System>
-    Boxed_Value eval_return(Eval_System &ss, TokenPtr node) {
-        Boxed_Value retval;
+    Boxed_Value eval_return(Eval_System &ss, const TokenPtr &node) {
         if (node->children.size() > 0) {
-            retval = eval_token(ss, node->children[0]);
+            throw Return_Value(eval_token(ss, node->children[0]), node);
         }
         else {
-            retval = Boxed_Value();
+            throw Return_Value(Boxed_Value(), node);
         }
-        throw Return_Value(retval, node);
     }
 
     /**
      * Evaluates a break statement
      */
     template <typename Eval_System>
-    Boxed_Value eval_break(Eval_System &, TokenPtr node) {
+    Boxed_Value eval_break(Eval_System &, const TokenPtr &node) {
         throw Break_Loop(node);
     }
 
@@ -783,7 +1074,7 @@ namespace chaiscript
      * Top-level evaluation dispatch for all AST node types
      */
     template <typename Eval_System>
-    Boxed_Value eval_token(Eval_System &ss, TokenPtr node) {
+    Boxed_Value eval_token(Eval_System &ss, const TokenPtr &node) {
         switch (node->identifier) {
             case (Token_Type::File) :
                 return eval_file(ss, node);
@@ -859,10 +1150,18 @@ namespace chaiscript
                 return eval_fun_call(ss, node);
             break;
 
+            case (Token_Type::Inplace_Fun_Call) :
+                return eval_inplace_fun_call(ss, node);
+            break;
+
             case (Token_Type::Dot_Access) :
                 return eval_dot_access(ss, node);
             break;
 
+            case(Token_Type::Try) :
+                return eval_try(ss, node);
+            break;
+
             case(Token_Type::If) :
                 return eval_if(ss, node);
             break;
@@ -879,6 +1178,14 @@ namespace chaiscript
                 return eval_def(ss, node);
             break;
 
+            case (Token_Type::Method) :
+                return eval_def_method(ss, node);
+            break;
+
+            case (Token_Type::Attr_Decl) :
+                return eval_attr_decl(ss, node);
+            break;
+
             case (Token_Type::Lambda) :
                 return eval_lambda(ss, node);
             break;

include/chaiscript/language/chaiscript_parser.hpp

@@ -323,37 +323,132 @@ namespace chaiscript
                 if (Quoted_String_()) {
                     std::string match;
                     bool is_escaped = false;
-                    for (std::string::iterator s = start + 1, end = input_pos - 1; s != end; ++s) {
-                        if (*s == '\\') {
-                            if (is_escaped) {
-                                match.push_back('\\');
-                                is_escaped = false;
-                            }
-                            else {
-                                is_escaped = true;
-                            }
-                        }
-                        else {
-                            if (is_escaped) {
-                                switch (*s) {
-                                    case ('b') : match.push_back('\b'); break;
-                                    case ('f') : match.push_back('\f'); break;
-                                    case ('n') : match.push_back('\n'); break;
-                                    case ('r') : match.push_back('\r'); break;
-                                    case ('t') : match.push_back('\t'); break;
-                                    case ('\'') : match.push_back('\''); break;
-                                    case ('\"') : match.push_back('\"'); break;
-                                    default: throw Eval_Error("Unknown escaped sequence in string", File_Position(prev_line, prev_col), filename);
+                    bool is_interpolated = false;
+                    bool saw_interpolation_marker = false;
+                    int prev_stack_top = match_stack.size();
+
+                    //for (std::string::iterator s = start + 1, end = input_pos - 1; s != end; ++s) {
+                    std::string::iterator s = start + 1, end = input_pos - 1;
+
+                    while (s != end) {
+                        if (saw_interpolation_marker) {
+                            if (*s == '{') {
+                                //We've found an interpolation point
+
+                                if (is_interpolated) {
+                                    //If we've seen previous interpolation, add on instead of making a new one
+                                    TokenPtr plus(new Token("+", Token_Type::Str, filename, prev_line, prev_col, line, col));
+                                    match_stack.push_back(plus);
+
+                                    TokenPtr t(new Token(match, Token_Type::Quoted_String, filename, prev_line, prev_col, line, col));
+                                    match_stack.push_back(t);
+
+                                    build_match(Token_Type::Additive, prev_stack_top);
+                                }
+                                else {
+                                    TokenPtr t(new Token(match, Token_Type::Quoted_String, filename, prev_line, prev_col, line, col));
+                                    match_stack.push_back(t);
+                                }
+
+                                //We've finished with the part of the string up to this point, so clear it
+                                match = "";
+
+                                TokenPtr plus(new Token("+", Token_Type::Str, filename, prev_line, prev_col, line, col));
+                                match_stack.push_back(plus);
+
+                                std::string eval_match;
+
+                                ++s;
+                                while ((*s != '}') && (s != end)) {
+                                    eval_match.push_back(*s);
+                                    ++s;
+                                }
+                                if (*s == '}') {
+                                    is_interpolated = true;
+                                    ++s;
+
+                                    int tostr_stack_top = match_stack.size();
+
+                                    TokenPtr tostr(new Token("to_string", Token_Type::Id, filename, prev_line, prev_col, line, col));
+                                    match_stack.push_back(tostr);
+
+                                    int ev_stack_top = match_stack.size();
+
+                                    TokenPtr ev(new Token("eval", Token_Type::Id, filename, prev_line, prev_col, line, col));
+                                    match_stack.push_back(ev);
+
+                                    int arg_stack_top = match_stack.size();
+
+                                    TokenPtr t(new Token(eval_match, Token_Type::Quoted_String, filename, prev_line, prev_col, line, col));
+                                    match_stack.push_back(t);
+
+                                    build_match(Token_Type::Arg_List, arg_stack_top);
+
+                                    build_match(Token_Type::Inplace_Fun_Call, ev_stack_top);
+
+                                    build_match(Token_Type::Arg_List, ev_stack_top);
+
+                                    build_match(Token_Type::Fun_Call, tostr_stack_top);
+
+                                    build_match(Token_Type::Additive, prev_stack_top);
+                                }
+                                else {
+                                    throw Eval_Error("Unclosed in-string eval", File_Position(prev_line, prev_col), filename);
                                 }
                             }
                             else {
-                                match.push_back(*s);
+                                match.push_back('$');
                             }
-                            is_escaped = false;
+                            saw_interpolation_marker = false;
+                        }
+                        else {
+                            if (*s == '\\') {
+                                if (is_escaped) {
+                                    match.push_back('\\');
+                                    is_escaped = false;
+                                }
+                                else {
+                                    is_escaped = true;
+                                }
+                            }
+                            else {
+                                if (is_escaped) {
+                                    switch (*s) {
+                                        case ('b') : match.push_back('\b'); break;
+                                        case ('f') : match.push_back('\f'); break;
+                                        case ('n') : match.push_back('\n'); break;
+                                        case ('r') : match.push_back('\r'); break;
+                                        case ('t') : match.push_back('\t'); break;
+                                        case ('\'') : match.push_back('\''); break;
+                                        case ('\"') : match.push_back('\"'); break;
+                                        case ('$') : match.push_back('$'); break;
+                                        default: throw Eval_Error("Unknown escaped sequence in string", File_Position(prev_line, prev_col), filename);
+                                    }
+                                }
+                                else if (*s == '$') {
+                                    saw_interpolation_marker = true;
+                                }
+                                else {
+                                    match.push_back(*s);
+                                }
+                                is_escaped = false;
+                            }
+                            ++s;
                         }
                     }
-                    TokenPtr t(new Token(match, Token_Type::Quoted_String, filename, prev_line, prev_col, line, col));
-                    match_stack.push_back(t);
+                    if (is_interpolated) {
+                        TokenPtr plus(new Token("+", Token_Type::Str, filename, prev_line, prev_col, line, col));
+                        match_stack.push_back(plus);
+
+                        TokenPtr t(new Token(match, Token_Type::Quoted_String, filename, prev_line, prev_col, line, col));
+                        match_stack.push_back(t);
+
+                        build_match(Token_Type::Additive, prev_stack_top);
+                    }
+                    else {
+                        TokenPtr t(new Token(match, Token_Type::Quoted_String, filename, prev_line, prev_col, line, col));
+                        match_stack.push_back(t);
+                    }
                     return true;
                 }
                 else {
@@ -591,7 +686,7 @@ namespace chaiscript
         /**
          * Reads (and potentially captures) a symbol group from input if it matches the parameter
          */
-        bool Symbol(const char *s, bool capture = false) {
+        bool Symbol(const char *s, bool capture = false, bool disallow_prevention=false) {
             SkipWS();
 
             if (!capture) {
@@ -601,7 +696,7 @@ namespace chaiscript
                 bool retval = Symbol_(s);
                 if (retval) {
                     //todo: fix this.  Hacky workaround for preventing substring matches
-                    if ((input_pos != input_end) && ((*input_pos == '+') || (*input_pos == '-') || (*input_pos == '*') || (*input_pos == '/') || (*input_pos == '=') || (*input_pos == '.'))) {
+                    if ((input_pos != input_end) && (disallow_prevention == false) && ((*input_pos == '+') || (*input_pos == '-') || (*input_pos == '*') || (*input_pos == '/') || (*input_pos == '=') || (*input_pos == '.'))) {
                         input_pos = start;
                         col = prev_col;
                         line = prev_line;
@@ -619,7 +714,7 @@ namespace chaiscript
                 int prev_line = line;
                 if (Symbol_(s)) {
                     //todo: fix this.  Hacky workaround for preventing substring matches
-                    if ((input_pos != input_end) && ((*input_pos == '+') || (*input_pos == '-') || (*input_pos == '*') || (*input_pos == '/') || (*input_pos == '=') || (*input_pos == '.'))) {
+                    if ((input_pos != input_end) && (disallow_prevention == false) && ((*input_pos == '+') || (*input_pos == '-') || (*input_pos == '*') || (*input_pos == '/') || (*input_pos == '=') || (*input_pos == '.'))) {
                         input_pos = start;
                         col = prev_col;
                         line = prev_line;
@@ -691,8 +786,10 @@ namespace chaiscript
 
             if (Equation()) {
                 retval = true;
+                while (Eol());
                 if (Char(',')) {
                     do {
+                        while (Eol());
                         if (!Equation()) {
                             throw Eval_Error("Unexpected value in parameter list", match_stack.back());
                         }
@@ -718,8 +815,10 @@ namespace chaiscript
             }
             else if (Map_Pair()) {
                 retval = true;
+                while (Eol());
                 if (Char(',')) {
                     do {
+                        while (Eol());
                         if (!Map_Pair()) {
                             throw Eval_Error("Unexpected value in container", match_stack.back());
                         }
@@ -768,7 +867,7 @@ namespace chaiscript
         bool Def() {
             bool retval = false;
             bool is_annotated = false;
-
+            bool is_method = false;
             TokenPtr annotation;
 
             if (Annotation()) {
@@ -787,6 +886,15 @@ namespace chaiscript
                     throw Eval_Error("Missing function name in definition", File_Position(line, col), filename);
                 }
 
+                if (Symbol("::", false)) {
+                    //We're now a method
+                    is_method = true;
+
+                    if (!Id(true)) {
+                        throw Eval_Error("Missing method name in definition", File_Position(line, col), filename);
+                    }
+                }
+
                 if (Char('(')) {
                     Arg_List();
                     if (!Char(')')) {
@@ -807,7 +915,12 @@ namespace chaiscript
                     throw Eval_Error("Incomplete function definition", File_Position(line, col), filename);
                 }
 
-                build_match(Token_Type::Def, prev_stack_top);
+                if (is_method) {
+                    build_match(Token_Type::Method, prev_stack_top);
+                }
+                else {
+                    build_match(Token_Type::Def, prev_stack_top);
+                }
 
                 if (is_annotated) {
                     match_stack.back()->annotation = annotation;
@@ -817,6 +930,77 @@ namespace chaiscript
             return retval;
         }
 
+        /**
+         * Reads a function definition from input
+         */
+        bool Try() {
+            bool retval = false;
+            bool is_annotated = false;
+
+            TokenPtr annotation;
+
+            if (Annotation()) {
+                while (Eol_());
+                annotation = match_stack.back();
+                match_stack.pop_back();
+                is_annotated = true;
+            }
+
+            int prev_stack_top = match_stack.size();
+
+            if (Keyword("try")) {
+                retval = true;
+
+                while (Eol());
+
+                if (!Block()) {
+                    throw Eval_Error("Incomplete 'try' block", File_Position(line, col), filename);
+                }
+
+                bool has_matches = true;
+                while (has_matches) {
+                    while (Eol());
+                    has_matches = false;
+                    if (Keyword("catch", false)) {
+                        int catch_stack_top = match_stack.size();
+                        if (Char('(')) {
+                            if (!(Id(true) && Char(')'))) {
+                                throw Eval_Error("Incomplete 'catch' expression", File_Position(line, col), filename);
+                            }
+                            if (Char(':')) {
+                                if (!Expression()) {
+                                    throw Eval_Error("Missing guard expression for catch", File_Position(line, col), filename);
+                                }
+                            }
+                        }
+
+                        while (Eol());
+
+                        if (!Block()) {
+                            throw Eval_Error("Incomplete 'catch' block", File_Position(line, col), filename);
+                        }
+                        build_match(Token_Type::Catch, catch_stack_top);
+                        has_matches = true;
+                    }
+                }
+                while (Eol());
+                if (Keyword("finally", false)) {
+                    int finally_stack_top = match_stack.size();
+
+                    while (Eol());
+
+                    if (!Block()) {
+                        throw Eval_Error("Incomplete 'finally' block", File_Position(line, col), filename);
+                    }
+                    build_match(Token_Type::Finally, finally_stack_top);
+                }
+
+                build_match(Token_Type::Try, prev_stack_top);
+            }
+
+            return retval;
+        }
+
         /**
          * Reads an if/elseif/else block from input
          */
@@ -1071,6 +1255,22 @@ namespace chaiscript
 
                 build_match(Token_Type::Var_Decl, prev_stack_top);
             }
+            else if (Keyword("attr")) {
+                retval = true;
+
+                if (!Id(true)) {
+                    throw Eval_Error("Incomplete attribute declaration", File_Position(line, col), filename);
+                }
+                if (!Symbol("::", false)) {
+                    throw Eval_Error("Incomplete attribute declaration", File_Position(line, col), filename);
+                }
+                if (!Id(true)) {
+                    throw Eval_Error("Missing attribute name in definition", File_Position(line, col), filename);
+                }
+
+
+                build_match(Token_Type::Attr_Decl, prev_stack_top);
+            }
 
             return retval;
         }
@@ -1181,24 +1381,6 @@ namespace chaiscript
 
             int prev_stack_top = match_stack.size();
 
-            if (Symbol("-")) {
-                retval = true;
-
-                if (!Dot_Access()) {
-                    throw Eval_Error("Incomplete negation expression", File_Position(line, col), filename);
-                }
-
-                build_match(Token_Type::Negate, prev_stack_top);
-            }
-            else if (Symbol("!")) {
-                retval = true;
-
-                if (!Dot_Access()) {
-                    throw Eval_Error("Incomplete '!' expression", File_Position(line, col), filename);
-                }
-
-                build_match(Token_Type::Not, prev_stack_top);
-            }
             if (Symbol("++", true)) {
                 retval = true;
 
@@ -1217,6 +1399,24 @@ namespace chaiscript
 
                 build_match(Token_Type::Prefix, prev_stack_top);
             }
+            else if (Char('-')) {
+                retval = true;
+
+                if (!Dot_Access()) {
+                    throw Eval_Error("Incomplete negation expression", File_Position(line, col), filename);
+                }
+
+                build_match(Token_Type::Negate, prev_stack_top);
+            }
+            else if (Char('!')) {
+                retval = true;
+
+                if (!Dot_Access()) {
+                    throw Eval_Error("Incomplete '!' expression", File_Position(line, col), filename);
+                }
+
+                build_match(Token_Type::Not, prev_stack_top);
+            }
 
             return retval;
         }
@@ -1419,7 +1619,8 @@ namespace chaiscript
 
             if (Expression()) {
                 retval = true;
-                if (Symbol("=", true) || Symbol(":=", true) || Symbol("+=", true) || Symbol("-=", true) || Symbol("*=", true) || Symbol("/=", true)) {
+                if (Symbol("=", true, true) || Symbol(":=", true, true) || Symbol("+=", true, true) ||
+                        Symbol("-=", true, true) || Symbol("*=", true, true) || Symbol("/=", true, true)) {
                     if (!Equation()) {
                         throw Eval_Error("Incomplete equation", match_stack.back());
                     }
@@ -1450,6 +1651,14 @@ namespace chaiscript
                     retval = true;
                     saw_eol = true;
                 }
+                else if (Try()) {
+                    if (!saw_eol) {
+                        throw Eval_Error("Two function definitions missing line separator", match_stack.back());
+                    }
+                    has_more = true;
+                    retval = true;
+                    saw_eol = true;
+                }
                 else if (If()) {
                     if (!saw_eol) {
                         throw Eval_Error("Two function definitions missing line separator", match_stack.back());

include/chaiscript/language/chaiscript_prelude.hpp

@@ -9,277 +9,297 @@
 
 //Note, the expression "[x,y]" in "collate" is parsed as two separate expressions
 //by C++, so CODE_STRING, takes two expressions and adds in the missing comma
-#define CODE_STRING(x, y) #x ", " #y
+#define CODE_STRING(x, y) #x ", " #y 
 
 #define chaiscript_prelude CODE_STRING(\
-def new(x) { eval(type_name(x))(); } \
-def clone(x) : function_exists(type_name(x))  { eval(type_name(x))(x); } \
+def new(x) { eval(type_name(x))(); } \n\
+def clone(x) : function_exists(type_name(x)) && call_exists(eval(type_name(x)), x)  { eval(type_name(x))(x); } \n\
 # to_string for Pair()\n\
-def to_string(x) : call_exists(first, x) && call_exists(second, x) { \
-  "<" + x.first.to_string() + ", " + x.second.to_string() + ">"; \
-}\
+def to_string(x) : call_exists(first, x) && call_exists(second, x) { \n\
+  "<" + x.first.to_string() + ", " + x.second.to_string() + ">"; \n\
+}\n\
 # to_string for containers\n\
-def to_string(x) : call_exists(range, x) && !x.is_type("string"){ \
-  "[" + x.join(", ") + "]"; \
-}\
+def to_string(x) : call_exists(range, x) && !x.is_type("string"){ \n\
+  "[" + x.join(", ") + "]"; \n\
+}\n\
 # Basic to_string function\n\
-def to_string(x) { \
-  internal_to_string(x); \
-}\
+def to_string(x) { \n\
+  internal_to_string(x); \n\
+}\n\
 # Prints to console with no carriage return\n\
-def puts(x) { \
-  print_string(x.to_string()); \
-} \
+def puts(x) { \n\
+  print_string(x.to_string()); \n\
+} \n\
 # Prints to console with carriage return\n\
-def print(x) { \
-  println_string(x.to_string()); \
-} \
+def print(x) { \n\
+  println_string(x.to_string()); \n\
+} \n\
 # Returns the maximum value of two numbers\n\
-def max(a, b) { if (a>b) { a } else { b } } \
+def max(a, b) { if (a>b) { a } else { b } } \n\
 # Returns the minimum value of two numbers\n\
-def min(a, b) { if (a<b) { a } else { b } } \
+def min(a, b) { if (a<b) { a } else { b } } \n\
 # Returns true if the value is odd\n\
-def odd(x)  { if (x % 2 == 1) { true } else { false } } \
+def odd(x)  { if (x % 2 == 1) { true } else { false } } \n\
 # Returns true if the value is even\n\
-def even(x) { if (x % 2 == 0) { true } else { false } } \
+def even(x) { if (x % 2 == 0) { true } else { false } } \n\
 # Pushes the second value onto the container first value while making a clone of the value\n\
 def push_back(container, x) : call_exists(push_back_ref, container, x) { container.push_back_ref(clone(x)) } \n\
+# Pushes the second value onto the front of the container first value while making a clone of the value\n\
+def push_front(container, x) : call_exists(push_front_ref, container, x) { container.push_front_ref(clone(x)) } \n\
 # Inserts the third value at the position of the second value into the container of the first\n\
 # while making a clone. \n\
 def insert_at(container, pos, x) { container.insert_ref_at(pos, clone(x)); } \n\
 # Returns the reverse of the given container\n\
-def reverse(container) {\
-  var retval = new(container); \
-  var r = retro(range(container)); \
-  while (!r.empty()) { \
-    retval.push_back(r.front()); \
-    r.pop_front(); \
-  } \
-  retval; \
-} \
+def reverse(container) {\n\
+  var retval = new(container); \n\
+  var r = range(container); \n\
+  while (!r.empty()) { \n\
+    retval.push_back(r.back()); \n\
+    r.pop_back(); \n\
+  } \n\
+  retval; \n\
+} \n\
+# Return a range from a range \n\
+def range(r) : call_exists(empty, r) && call_exists(pop_front, r) && call_exists(pop_back, r) && call_exists(back, r) && call_exists(front, r) { return clone(r); }\n\
+# The retro attribute that contains the underlying range \n\
+attr retro::m_range; \n\
+# Creates a retro from a retro by returning the original range\n\
+def retro(r) : call_exists(get_type_name, r) && get_type_name(r) == "retro" { clone(r.m_range) }\n\
+# Creates a retro range from a range\n\
+def retro::retro(r) : call_exists(empty, r) && call_exists(pop_front, r) && call_exists(pop_back, r) && call_exists(back, r) && call_exists(front, r) { this.m_range = r; }\n\
+# Returns the first value of a retro\n\
+def retro::front()  { back(this.m_range) }\n\
+# Returns the last value of a retro\n\
+def retro::back()  { front(this.m_range) }\n\
+# Moves the back iterator of a retro towards the front by one \n\
+def retro::pop_back()  { pop_front(this.m_range) }\n\
+# Moves the front iterator of a retro towards the back by one \n\
+def retro::pop_front()  { pop_back(this.m_range) } \n\
+# returns true if the retro is out of elements \n\
+def retro::empty() { empty(this.m_range); } \n\
 # Performs the second value function over the container first value\n\
-def for_each(container, func) : call_exists(range, container) { \
-  var range = range(container); \
-  while (!range.empty()) { \
-    func(range.front()); \
-    range.pop_front(); \
-  } \
-} \
-def back_inserter(container) { \
-  bind(push_back, container, _);     \
-}\
-\
-def map(container, func, inserter) : call_exists(range, container) { \
-  var range = range(container); \
-  while (!range.empty()) { \
-    inserter(func(range.front())); \
-    range.pop_front(); \
-  } \
-} \
+def for_each(container, func) : call_exists(range, container) { \n\
+  var t_range = range(container); \n\
+  while (!t_range.empty()) { \n\
+    func(t_range.front()); \n\
+    t_range.pop_front(); \n\
+  } \n\
+} \n\
+def back_inserter(container) { \n\
+  bind(push_back, container, _);     \n\
+}\n\
+\n\
+def map(container, func, inserter) : call_exists(range, container) { \n\
+  var range = range(container); \n\
+  while (!range.empty()) { \n\
+    inserter(func(range.front())); \n\
+    range.pop_front(); \n\
+  } \n\
+} \n\
 # Performs the second value function over the container first value. Creates a new container with the results\n\
-def map(container, func) { \
-  var retval = new(container); \
-  map(container, func, back_inserter(retval));\
-  retval;\
-}\
+def map(container, func) { \n\
+  var retval = new(container); \n\
+  map(container, func, back_inserter(retval));\n\
+  retval;\n\
+}\n\
 # Performs the second value function over the container first value. Starts with initial and continues with each element.\n\
-def foldl(container, func, initial) : call_exists(range, container){ \
-  var retval = initial; \
-  var range = range(container); \
-  while (!range.empty()) { \
-    retval = (func(range.front(), retval)); \
-    range.pop_front(); \
-  } \
-  retval; \
-} \
+def foldl(container, func, initial) : call_exists(range, container){ \n\
+  var retval = initial; \n\
+  var range = range(container); \n\
+  while (!range.empty()) { \n\
+    retval = (func(range.front(), retval)); \n\
+    range.pop_front(); \n\
+  } \n\
+  retval; \n\
+} \n\
 # Returns the sum of the elements of the given value\n\
-def sum(container) { foldl(container, `+`, 0.0) } \
+def sum(container) { foldl(container, `+`, 0.0) } \n\
 # Returns the product of the elements of the given value\n\
-def product(container) { foldl(container, `*`, 1.0) } \
+def product(container) { foldl(container, `*`, 1.0) } \n\
 # Returns a new container with the elements of the first value concatenated with the elements of the second value\n\
-def concat(x, y) : call_exists(clone, x) { \
-  var retval = x; \
-  var len = y.size(); \
-  var i = 0; \
-  while (i < len) { \
-    retval.push_back(y[i]); \
-    ++i; \
-  } \
-  retval; \
-} \
-def take(container, num, inserter) : call_exists(range, container) { \
-  var r = range(container); \
-  var i = num; \
-  while ((i > 0) && (!r.empty())) { \
-    inserter(r.front()); \
-    r.pop_front(); \
-    --i; \
-  } \
-} \
+def concat(x, y) : call_exists(clone, x) { \n\
+  var retval = x; \n\
+  var len = y.size(); \n\
+  var i = 0; \n\
+  while (i < len) { \n\
+    retval.push_back(y[i]); \n\
+    ++i; \n\
+  } \n\
+  retval; \n\
+} \n\
+def take(container, num, inserter) : call_exists(range, container) { \n\
+  var r = range(container); \n\
+  var i = num; \n\
+  while ((i > 0) && (!r.empty())) { \n\
+    inserter(r.front()); \n\
+    r.pop_front(); \n\
+    --i; \n\
+  } \n\
+} \n\
 # Returns a new container with the given number of elements taken from the container\n\
-def take(container, num) {\
-  var retval = new(container); \
-  take(container, num, back_inserter(retval)); \
-  retval; \
-}\
-def take_while(container, f, inserter) : call_exists(range, container) { \
-  var r = range(container); \
-  while ((!r.empty()) && f(r.front())) { \
-    inserter(r.front()); \
-    r.pop_front(); \
-  } \
-} \
+def take(container, num) {\n\
+  var retval = new(container); \n\
+  take(container, num, back_inserter(retval)); \n\
+  retval; \n\
+}\n\
+def take_while(container, f, inserter) : call_exists(range, container) { \n\
+  var r = range(container); \n\
+  while ((!r.empty()) && f(r.front())) { \n\
+    inserter(r.front()); \n\
+    r.pop_front(); \n\
+  } \n\
+} \n\
 # Returns a new container with the given elements match the second value function\n\
-def take_while(container, f) {\
-  var retval = new(container); \
-  take_while(container, f, back_inserter(retval)); \
-  retval;\
-}\
-def drop(container, num, inserter) : call_exists(range, container) { \
-  var r = range(container); \
-  var i = num; \
-  while ((i > 0) && (!r.empty())) { \
-    r.pop_front(); \
-    --i; \
-  } \
-  while (!r.empty()) { \
-    inserter(r.front()); \
-    r.pop_front(); \
-  } \
-} \
+def take_while(container, f) {\n\
+  var retval = new(container); \n\
+  take_while(container, f, back_inserter(retval)); \n\
+  retval;\n\
+}\n\
+def drop(container, num, inserter) : call_exists(range, container) { \n\
+  var r = range(container); \n\
+  var i = num; \n\
+  while ((i > 0) && (!r.empty())) { \n\
+    r.pop_front(); \n\
+    --i; \n\
+  } \n\
+  while (!r.empty()) { \n\
+    inserter(r.front()); \n\
+    r.pop_front(); \n\
+  } \n\
+} \n\
 # Returns a new container with the given number of elements dropped from the given container \n\
-def drop(container, num) {\
-  var retval = new(container); \
-  drop(container, num, back_inserter(retval)); \
-  retval; \
-}\
-def drop_while(container, f, inserter) : call_exists(range, container) { \
-  var r = range(container); \
-  while ((!r.empty())&& f(r.front())) { \
-    r.pop_front(); \
-  } \
-  while (!r.empty()) { \
-    inserter(r.front()); \
-    r.pop_front(); \
-  } \
-} \
+def drop(container, num) {\n\
+  var retval = new(container); \n\
+  drop(container, num, back_inserter(retval)); \n\
+  retval; \n\
+}\n\
+def drop_while(container, f, inserter) : call_exists(range, container) { \n\
+  var r = range(container); \n\
+  while ((!r.empty())&& f(r.front())) { \n\
+    r.pop_front(); \n\
+  } \n\
+  while (!r.empty()) { \n\
+    inserter(r.front()); \n\
+    r.pop_front(); \n\
+  } \n\
+} \n\
 # Returns a new container with the given elements dropped that match the second value function\n\
-def drop_while(container, f) {\
-  var retval = new(container); \
-  drop_while(container, f, back_inserter(retval)); \
-  retval; \
-}\
+def drop_while(container, f) {\n\
+  var retval = new(container); \n\
+  drop_while(container, f, back_inserter(retval)); \n\
+  retval; \n\
+}\n\
 # Applies the second value function to the container. Starts with the first two elements. Expects at least 2 elements.\n\
-def reduce(container, func) : container.size() >= 2 && call_exists(range, container) { \
-  var r = range(container); \
-  var retval = r.front(); \
-  r.pop_front(); \
-  retval = func(retval, r.front()); \
-  r.pop_front(); \
-  while (!r.empty()) { \
-    retval = func(retval, r.front()); \
-    r.pop_front(); \
-  } \
-  retval; \
-} \
+def reduce(container, func) : container.size() >= 2 && call_exists(range, container) { \n\
+  var r = range(container); \n\
+  var retval = r.front(); \n\
+  r.pop_front(); \n\
+  retval = func(retval, r.front()); \n\
+  r.pop_front(); \n\
+  while (!r.empty()) { \n\
+    retval = func(retval, r.front()); \n\
+    r.pop_front(); \n\
+  } \n\
+  retval; \n\
+} \n\
 # Returns a string of the elements in container delimited by the second value string\n\
-def join(container, delim) { \
-  var retval = ""; \
-  var range = range(container); \
-  if (!range.empty()) { \
-    retval += to_string(range.front()); \
-    range.pop_front(); \
-    while (!range.empty()) { \
-      retval += delim; \
-      retval += to_string(range.front()); \
-      range.pop_front(); \
-    } \
-  } \
-  retval; \
-} \
-def filter(container, f, inserter) : call_exists(range, container) { \
-  var r = range(container); \
-  while (!r.empty()) { \
-    if (f(r.front())) { \
-      inserter(r.front()); \
-    } \
-    r.pop_front(); \
-  } \
-} \
+def join(container, delim) { \n\
+  var retval = ""; \n\
+  var range = range(container); \n\
+  if (!range.empty()) { \n\
+    retval += to_string(range.front()); \n\
+    range.pop_front(); \n\
+    while (!range.empty()) { \n\
+      retval += delim; \n\
+      retval += to_string(range.front()); \n\
+      range.pop_front(); \n\
+    } \n\
+  } \n\
+  retval; \n\
+} \n\
+def filter(container, f, inserter) : call_exists(range, container) { \n\
+  var r = range(container); \n\
+  while (!r.empty()) { \n\
+    if (f(r.front())) { \n\
+      inserter(r.front()); \n\
+    } \n\
+    r.pop_front(); \n\
+  } \n\
+} \n\
 # Returns a new Vector which match the second value function\n\
-def filter(container, f) { \
-  var retval = new(container); \
-  filter(container, f, back_inserter(retval));\
-  retval;\
-}\
-def generate_range(x, y, inserter) { \
-  var i = x; \
-  while (i <= y) { \
-    inserter(i); \
-    ++i; \
-  } \
-} \
+def filter(container, f) { \n\
+  var retval = new(container); \n\
+  filter(container, f, back_inserter(retval));\n\
+  retval;\n\
+}\n\
+def generate_range(x, y, inserter) { \n\
+  var i = x; \n\
+  while (i <= y) { \n\
+    inserter(i); \n\
+    ++i; \n\
+  } \n\
+} \n\
 # Returns a new Vector which represents the range from the first value to the second value\n\
-def generate_range(x, y) { \
-  var retval = Vector(); \
-  generate_range(x,y,back_inserter(retval)); \
-  retval; \
-}\
+def generate_range(x, y) { \n\
+  var retval = Vector(); \n\
+  generate_range(x,y,back_inserter(retval)); \n\
+  retval; \n\
+}\n\
 # Returns a new Vector with the first value to the second value as its elements\n\
-def collate(x, y) { \
-  [x, y]; \
-} \
-def zip_with(f, x, y, inserter) : call_exists(range, x) && call_exists(range, y) { \
-  var r_x = range(x); \
-  var r_y = range(y); \
-  while (!r_x.empty() && !r_y.empty()) { \
-    inserter(f(r_x.front(), r_y.front())); \
-    r_x.pop_front(); \
-    r_y.pop_front(); \
-  } \
-} \
+def collate(x, y) { \n\
+  [x, y]; \n\
+} \n\
+def zip_with(f, x, y, inserter) : call_exists(range, x) && call_exists(range, y) { \n\
+  var r_x = range(x); \n\
+  var r_y = range(y); \n\
+  while (!r_x.empty() && !r_y.empty()) { \n\
+    inserter(f(r_x.front(), r_y.front())); \n\
+    r_x.pop_front(); \n\
+    r_y.pop_front(); \n\
+  } \n\
+} \n\
 # Returns a new Vector which joins matching elements of the second and third value with the first value function\n\
-def zip_with(f, x, y) { \
-  var retval = Vector(); \
-  zip_with(f,x,y,back_inserter(retval)); \
-  retval;\
-}\
+def zip_with(f, x, y) { \n\
+  var retval = Vector(); \n\
+  zip_with(f,x,y,back_inserter(retval)); \n\
+  retval;\n\
+}\n\
 # Returns a new Vector which joins matching elements of the first and second\n\
-def zip(x, y) { \
-  zip_with(collate, x, y); \
-}\
+def zip(x, y) { \n\
+  zip_with(collate, x, y); \n\
+}\n\
 # Returns the position of the second value string in the first value string\n\
-def find(str, substr) { \
-  int(find(str, substr, size_t(0))); \
-} \
+def find(str, substr) { \n\
+  int(find(str, substr, size_t(0))); \n\
+} \n\
 # Returns the position of last match of the second value string in the first value string\n\
-def rfind(str, substr) { \
-  int(rfind(str, substr, size_t(-1))); \
-} \
+def rfind(str, substr) { \n\
+  int(rfind(str, substr, size_t(-1))); \n\
+} \n\
 # Returns the position of the first match of elements in the second value string in the first value string\n\
-def find_first_of(str, list) { \
-  int(find_first_of(str, list, size_t(0))); \
-} \
+def find_first_of(str, list) { \n\
+  int(find_first_of(str, list, size_t(0))); \n\
+} \n\
 # Returns the position of the last match of elements in the second value string in the first value string\n\
-def find_last_of(str, list) { \
-  int(find_last_of(str, list, size_t(-1))); \
-} \
+def find_last_of(str, list) { \n\
+  int(find_last_of(str, list, size_t(-1))); \n\
+} \n\
 # Returns the position of the first non-matching element in the second value string in the first value string\n\
-def find_first_not_of(str, list) { \
-  int(find_first_not_of(str, list, size_t(0))); \
-} \
+def find_first_not_of(str, list) { \n\
+  int(find_first_not_of(str, list, size_t(0))); \n\
+} \n\
 # Returns the position of the last non-matching element in the second value string in the first value string\n\
-def find_last_not_of(str, list) { \
-  int(find_last_not_of(str, list, size_t(-1))); \
-} \
-def ltrim(str) { \
-  drop_while(str, fun(x) { x == ' ' || x == '\t' }); \
-} \
-def rtrim(str) { \
-  reverse(drop_while(reverse(str), fun(x) { x == ' ' || x == '\t' })); \
-} \
-def trim(str) { \
-  ltrim(rtrim(str)); \
+def find_last_not_of(str, list) { \n\
+  int(find_last_not_of(str, list, size_t(-1))); \n\
+} \n\
+def ltrim(str) { \n\
+  drop_while(str, fun(x) { x == ' ' || x == '\t' }); \n\
+} \n\
+def rtrim(str) { \n\
+  reverse(drop_while(reverse(str), fun(x) { x == ' ' || x == '\t' })); \n\
+} \n\
+def trim(str) { \n\
+  ltrim(rtrim(str)); \n\
 } \
 )
 #endif /* CHAISCRIPT_PRELUDE_HPP_ */

msvc/chai-example/chai-example.vcproj

@@ -42,7 +42,7 @@
 			<Tool
 				Name="VCCLCompilerTool"
 				Optimization="0"
-				AdditionalIncludeDirectories="C:\Programming\chaiscript\trunk\include"
+				AdditionalIncludeDirectories="&quot;$(ProjectDir)\..\..\include&quot;"
 				PreprocessorDefinitions="WIN32;_DEBUG;_CONSOLE"
 				MinimalRebuild="true"
 				BasicRuntimeChecks="3"
@@ -117,6 +117,7 @@
 				Name="VCCLCompilerTool"
 				Optimization="2"
 				EnableIntrinsicFunctions="true"
+				AdditionalIncludeDirectories="&quot;$(ProjectDir)\..\..\include&quot;"
 				PreprocessorDefinitions="WIN32;NDEBUG;_CONSOLE"
 				RuntimeLibrary="2"
 				EnableFunctionLevelLinking="true"

msvc/chaiscript/Boost.vsprops

@@ -6,7 +6,7 @@
 	>
 	<Tool
 		Name="VCCLCompilerTool"
-		AdditionalIncludeDirectories="&quot;C:\Programming\Boost\include\boost-1_38&quot;"
+		AdditionalIncludeDirectories="&quot;C:\boost\include\boost-1_38&quot;"
 	/>
 	<Tool
 		Name="VCLibrarianTool"
@@ -14,6 +14,6 @@
 	/>
 	<Tool
 		Name="VCLinkerTool"
-		AdditionalLibraryDirectories="C:\Programming\Boost\lib"
+		AdditionalLibraryDirectories="C:\Boost\lib"
 	/>
 </VisualStudioPropertySheet>

msvc/chaiscript/chaiscript.sln

@@ -5,6 +5,8 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "chaiscript", "chaiscript.vc
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "chai-example", "..\chai-example\chai-example.vcproj", "{CE422E94-B360-4588-8C65-6A9BE80798F9}"
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "test_module", "..\test_module\test_module.vcproj", "{775EDCC2-102F-4E75-A860-9AF398D04145}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Win32 = Debug|Win32
@@ -19,6 +21,10 @@ Global
 		{CE422E94-B360-4588-8C65-6A9BE80798F9}.Debug|Win32.Build.0 = Debug|Win32
 		{CE422E94-B360-4588-8C65-6A9BE80798F9}.Release|Win32.ActiveCfg = Release|Win32
 		{CE422E94-B360-4588-8C65-6A9BE80798F9}.Release|Win32.Build.0 = Release|Win32
+		{775EDCC2-102F-4E75-A860-9AF398D04145}.Debug|Win32.ActiveCfg = Debug|Win32
+		{775EDCC2-102F-4E75-A860-9AF398D04145}.Debug|Win32.Build.0 = Debug|Win32
+		{775EDCC2-102F-4E75-A860-9AF398D04145}.Release|Win32.ActiveCfg = Release|Win32
+		{775EDCC2-102F-4E75-A860-9AF398D04145}.Release|Win32.Build.0 = Release|Win32
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

msvc/chaiscript/chaiscript.vcproj

@@ -23,7 +23,7 @@
 			ConfigurationType="1"
 			InheritedPropertySheets=".\Boost.vsprops"
 			UseOfMFC="2"
-			CharacterSet="0"
+			CharacterSet="1"
 			>
 			<Tool
 				Name="VCPreBuildEventTool"
@@ -49,7 +49,7 @@
 				MinimalRebuild="true"
 				BasicRuntimeChecks="3"
 				RuntimeLibrary="3"
-				DisableLanguageExtensions="true"
+				DisableLanguageExtensions="false"
 				TreatWChar_tAsBuiltInType="false"
 				UsePrecompiledHeader="0"
 				WarningLevel="4"
@@ -100,7 +100,7 @@
 			IntermediateDirectory="$(ConfigurationName)"
 			ConfigurationType="1"
 			InheritedPropertySheets=".\Boost.vsprops"
-			CharacterSet="0"
+			CharacterSet="1"
 			WholeProgramOptimization="1"
 			>
 			<Tool
@@ -221,10 +221,18 @@
 				RelativePath="..\..\include\chaiscript\language\chaiscript_prelude.hpp"
 				>
 			</File>
+			<File
+				RelativePath="..\..\include\chaiscript\chaiscript_threading.hpp"
+				>
+			</File>
 			<File
 				RelativePath="..\..\include\chaiscript\dispatchkit\dispatchkit.hpp"
 				>
 			</File>
+			<File
+				RelativePath="..\..\include\chaiscript\dispatchkit\dynamic_object.hpp"
+				>
+			</File>
 			<File
 				RelativePath="..\..\include\chaiscript\dispatchkit\function_call.hpp"
 				>

msvc/test_module/test_module.vcproj

@@ -0,0 +1,198 @@
+<?xml version="1.0" encoding="Windows-1252"?>
+<VisualStudioProject
+	ProjectType="Visual C++"
+	Version="9.00"
+	Name="test_module"
+	ProjectGUID="{775EDCC2-102F-4E75-A860-9AF398D04145}"
+	RootNamespace="test_module"
+	Keyword="Win32Proj"
+	TargetFrameworkVersion="196613"
+	>
+	<Platforms>
+		<Platform
+			Name="Win32"
+		/>
+	</Platforms>
+	<ToolFiles>
+	</ToolFiles>
+	<Configurations>
+		<Configuration
+			Name="Debug|Win32"
+			OutputDirectory="$(SolutionDir)$(ConfigurationName)"
+			IntermediateDirectory="$(ConfigurationName)"
+			ConfigurationType="2"
+			InheritedPropertySheets="..\chaiscript\Boost.vsprops"
+			UseOfMFC="0"
+			CharacterSet="0"
+			>
+			<Tool
+				Name="VCPreBuildEventTool"
+			/>
+			<Tool
+				Name="VCCustomBuildTool"
+			/>
+			<Tool
+				Name="VCXMLDataGeneratorTool"
+			/>
+			<Tool
+				Name="VCWebServiceProxyGeneratorTool"
+			/>
+			<Tool
+				Name="VCMIDLTool"
+			/>
+			<Tool
+				Name="VCCLCompilerTool"
+				Optimization="0"
+				AdditionalIncludeDirectories="&quot;$(ProjectDir)\..\..\include&quot;"
+				PreprocessorDefinitions="WIN32;_DEBUG;_WINDOWS;_USRDLL;TEST_MODULE_EXPORTS"
+				MinimalRebuild="true"
+				BasicRuntimeChecks="3"
+				RuntimeLibrary="3"
+				UsePrecompiledHeader="0"
+				WarningLevel="3"
+				DebugInformationFormat="4"
+			/>
+			<Tool
+				Name="VCManagedResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCPreLinkEventTool"
+			/>
+			<Tool
+				Name="VCLinkerTool"
+				LinkIncremental="2"
+				GenerateDebugInformation="true"
+				SubSystem="2"
+				TargetMachine="1"
+			/>
+			<Tool
+				Name="VCALinkTool"
+			/>
+			<Tool
+				Name="VCManifestTool"
+			/>
+			<Tool
+				Name="VCXDCMakeTool"
+			/>
+			<Tool
+				Name="VCBscMakeTool"
+			/>
+			<Tool
+				Name="VCFxCopTool"
+			/>
+			<Tool
+				Name="VCAppVerifierTool"
+			/>
+			<Tool
+				Name="VCPostBuildEventTool"
+			/>
+		</Configuration>
+		<Configuration
+			Name="Release|Win32"
+			OutputDirectory="$(SolutionDir)$(ConfigurationName)"
+			IntermediateDirectory="$(ConfigurationName)"
+			ConfigurationType="2"
+			InheritedPropertySheets="..\chaiscript\Boost.vsprops"
+			CharacterSet="1"
+			WholeProgramOptimization="1"
+			>
+			<Tool
+				Name="VCPreBuildEventTool"
+			/>
+			<Tool
+				Name="VCCustomBuildTool"
+			/>
+			<Tool
+				Name="VCXMLDataGeneratorTool"
+			/>
+			<Tool
+				Name="VCWebServiceProxyGeneratorTool"
+			/>
+			<Tool
+				Name="VCMIDLTool"
+			/>
+			<Tool
+				Name="VCCLCompilerTool"
+				Optimization="2"
+				EnableIntrinsicFunctions="true"
+				AdditionalIncludeDirectories="&quot;$(ProjectDir)\..\..\include&quot;"
+				PreprocessorDefinitions="WIN32;NDEBUG;_WINDOWS;_USRDLL;TEST_MODULE_EXPORTS"
+				RuntimeLibrary="2"
+				EnableFunctionLevelLinking="true"
+				UsePrecompiledHeader="0"
+				WarningLevel="3"
+				DebugInformationFormat="3"
+			/>
+			<Tool
+				Name="VCManagedResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCPreLinkEventTool"
+			/>
+			<Tool
+				Name="VCLinkerTool"
+				LinkIncremental="1"
+				GenerateDebugInformation="true"
+				SubSystem="2"
+				OptimizeReferences="2"
+				EnableCOMDATFolding="2"
+				TargetMachine="1"
+			/>
+			<Tool
+				Name="VCALinkTool"
+			/>
+			<Tool
+				Name="VCManifestTool"
+			/>
+			<Tool
+				Name="VCXDCMakeTool"
+			/>
+			<Tool
+				Name="VCBscMakeTool"
+			/>
+			<Tool
+				Name="VCFxCopTool"
+			/>
+			<Tool
+				Name="VCAppVerifierTool"
+			/>
+			<Tool
+				Name="VCPostBuildEventTool"
+			/>
+		</Configuration>
+	</Configurations>
+	<References>
+	</References>
+	<Files>
+		<Filter
+			Name="Source Files"
+			Filter="cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx"
+			UniqueIdentifier="{4FC737F1-C7A5-4376-A066-2A32D752A2FF}"
+			>
+			<File
+				RelativePath="..\..\src\test_module.cpp"
+				>
+			</File>
+		</Filter>
+		<Filter
+			Name="Header Files"
+			Filter="h;hpp;hxx;hm;inl;inc;xsd"
+			UniqueIdentifier="{93995380-89BD-4b04-88EB-625FBE52EBFB}"
+			>
+		</Filter>
+		<Filter
+			Name="Resource Files"
+			Filter="rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav"
+			UniqueIdentifier="{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}"
+			>
+		</Filter>
+	</Files>
+	<Globals>
+	</Globals>
+</VisualStudioProject>

run_unit_tests.sh

@@ -1,5 +1,6 @@
 #!/bin/bash
 
+
 successes=0
 failures=0
 
@@ -8,7 +9,7 @@ for file in unittests/*.chai
 do
   tstname=${file%.*}
 	tst="$tstname.txt"
-	./chaiscript_eval $file > /tmp/tstout.txt
+	LD_LIBRARY_PATH=. ./chaiscript_eval $file > /tmp/tstout.txt
 	diff $tst /tmp/tstout.txt
 	if [ "$?" -eq "0" ]
 	then

run_unit_tests_win.sh

@@ -0,0 +1,27 @@
+#!/bin/bash
+
+successes=0
+failures=0
+
+echo -n "Running unit tests"
+for file in unittests/*.chai
+do
+  tstname=${file%.*}
+	tst="$tstname.txt"
+	./chaiscript_eval $file > /tmp/tstout.txt
+        cat $tst > /tmp/tstmaster.txt
+        awk 'sub("$", "\r")' $tst > /tmp/tstmaster.txt
+	diff /tmp/tstmaster.txt /tmp/tstout.txt
+	if [ "$?" -eq "0" ]
+	then
+		echo -n "."
+		successes=$((successes+1))
+	else
+		echo "[from failed test $file]"
+		failures=$((failures+1))
+	fi
+done
+echo ""
+
+total=$((successes+failures))
+echo "$successes out of $total succeeded"

src/example.cpp

@@ -22,6 +22,18 @@ void log(const std::string &module, const std::string &msg)
   std::cout << "[" << boost::posix_time::microsec_clock::local_time() << "] <" << module << "> " << msg << std::endl;
 }
 
+
+void hello_world(const chaiscript::Boxed_Value &o)
+{
+  std::cout << "Hello World" << std::endl;
+}
+
+void hello_constructor(const chaiscript::Boxed_Value &o)
+{
+  std::cout << "Hello Constructor" << std::endl;
+}
+
+
 struct System
 {
   std::map<std::string, boost::function<std::string (const std::string &) > > m_callbacks;
@@ -45,7 +57,7 @@ struct System
   }
 };
 
-void take_shared_ptr(const boost::shared_ptr<std::string> &p)
+void take_shared_ptr(const boost::shared_ptr<const std::string> &p)
 {
   std::cout << *p << std::endl;
 }
@@ -130,7 +142,18 @@ int main(int argc, char *argv[]) {
   chai.add(bootstrap::vector_type<std::vector<int> >("IntVector"));
 
 
-  chai("dump_system()");
+  // Test ability to register a function that excepts a shared_ptr version of a type
   chai("take_shared_ptr(\"Hello World as a shared_ptr\");");
+
+
+  //Dynamic objects test
+  chai.add(chaiscript::Proxy_Function(new Dynamic_Object_Function("TestType", fun(&hello_world))), "hello_world");
+  chai.add(chaiscript::Proxy_Function(new Dynamic_Object_Constructor("TestType", fun(&hello_constructor))), "TestType");
+  chai.add(fun(boost::function<Boxed_Value (Dynamic_Object &)>(boost::bind(&Dynamic_Object_Attribute::func, "TestType", "attr", _1))), "attr");
+
+  chai.eval("var x = TestType()");
+  chai.eval("x.attr = \"hi\"");
+  chai.eval("print(x.attr)");
+  chai.eval("x.hello_world()");
 }
 

src/main.cpp

@@ -6,22 +6,48 @@
 
 #include <iostream>
 
+#include <list>
+
+#ifdef READLINE_AVAILABLE
+#include <readline/readline.h>
+#include <readline/history.h>
+#endif
+
 #include <chaiscript/chaiscript.hpp>
 
 void print_help() {
-    std::cout << "ChaiScript evaluator.  To evaluate and expression, type it and press <enter>." << std::endl;
+    std::cout << "ChaiScript evaluator.  To evaluate an 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;
 }
 
+std::string get_next_command() {
+#ifdef READLINE_AVAILABLE
+    char *input_raw;
+    input_raw = readline("eval> ");
+    add_history(input_raw);
+    return std::string(input_raw);
+#else
+    std::string retval;
+    std::cout << "eval> ";
+    std::getline(std::cin, retval);
+    return retval;
+#endif
+}
+
 int main(int argc, char *argv[]) {
     std::string input;
     chaiscript::ChaiScript chai;
 
+
     if (argc < 2) {
-        std::cout << "eval> ";
-        std::getline(std::cin, input);
+        //std::cout << "eval> ";
+        //std::getline(std::cin, input);
+#ifdef READLINE_AVAILABLE
+        using_history();
+#endif
+        input = get_next_command();
         while (input != "quit") {
 
             chaiscript::Boxed_Value val;
@@ -35,7 +61,7 @@ int main(int argc, char *argv[]) {
                     val = chai.eval(input);
 
                     //Then, we try to print the result of the evaluation to the user
-                    if (val.get_type_info().m_bare_type_info && *(val.get_type_info().m_bare_type_info) != typeid(void)) {
+                    if (!val.get_type_info().bare_equal(chaiscript::user_type<void>())) {
                         try {
                             chaiscript::dispatch(chai.get_eval_engine().get_function("print"), chaiscript::Param_List_Builder() << val);
                         }
@@ -49,8 +75,7 @@ int main(int argc, char *argv[]) {
                 }
             }
 
-            std::cout << "eval> ";
-            std::getline(std::cin, input);
+            input = get_next_command();
         }
     }
     else {

src/multithreaded.cpp

@@ -0,0 +1,38 @@
+// This file is distributed under the BSD License.
+// See "license.txt" for details.
+// Copyright 2009, Jonathan Turner (jturner@minnow-lang.org)
+// and Jason Turner (lefticus@gmail.com)
+// http://www.chaiscript.com
+
+#include <iostream>
+
+#include <list>
+
+#include <chaiscript/chaiscript.hpp>
+#include <boost/thread.hpp>
+
+void do_work(chaiscript::ChaiScript &c)
+{
+//  c("use(\"work.chai\"); do_chai_work(num_iterations);");
+  c("use(\"work.chai\"); do_chai_work(10000);");
+}
+
+int main(int argc, char *argv[]) {
+    std::string input;
+    chaiscript::ChaiScript chai;
+
+    //chai.add_shared_object(chaiscript::Boxed_Value(10000), "num_iterations");
+
+    std::vector<boost::shared_ptr<boost::thread> > threads;
+
+    for (int i = 0; i < argc - 1; ++i)
+    {
+      threads.push_back(boost::shared_ptr<boost::thread>(new boost::thread(boost::bind(do_work, boost::ref(chai)))));
+    }
+
+    for (int i = 0; i < argc - 1; ++i)
+    {
+      threads[i]->join();
+    }
+}
+

src/stl_extra.cpp

@@ -0,0 +1,9 @@
+
+#include <chaiscript/chaiscript.hpp>
+#include <string>
+
+
+CHAISCRIPT_MODULE_EXPORT chaiscript::ModulePtr create_chaiscript_module_stl_extra()
+{
+  return chaiscript::bootstrap::list_type<std::list<chaiscript::Boxed_Value> >("List");
+}

src/test_module.cpp

@@ -0,0 +1,16 @@
+
+#include <chaiscript/chaiscript.hpp>
+#include <string>
+
+std::string hello_world()
+{
+  return "Hello World";
+}
+
+CHAISCRIPT_MODULE_EXPORT  chaiscript::ModulePtr create_chaiscript_module_test()
+{
+  chaiscript::ModulePtr m(new chaiscript::Module());
+
+  m->add(chaiscript::fun(hello_world), "hello_world");
+  return m;
+}

src/work.chai

@@ -0,0 +1,10 @@
+def do_chai_work(num_iters)
+{
+  var i = 0;
+  for (var k = 0; k<num_iters * 10; ++k)
+  {
+    i += k;
+  }
+
+  print(i);
+}

unittests/equ_shortform.chai

@@ -0,0 +1,4 @@
+var x=.5
+print(x)
+var y=-.5
+print(y)

unittests/equ_shortform.txt

@@ -0,0 +1,2 @@
+0.5
+-0.5

unittests/exception.chai

@@ -0,0 +1,9 @@
+var x = 1
+try {
+  throw(x)
+  x = 2
+}
+catch(e) {
+  x = e + 3
+}
+print(x)

unittests/exception.txt

@@ -0,0 +1 @@
+4

unittests/exception_finally.chai

@@ -0,0 +1,19 @@
+try {
+  throw(3)
+}
+catch(x) { 
+  print(x)
+}
+finally {
+  print("Finally #1")
+}
+
+try {
+  print("Safe")
+}
+catch {
+  print("Caught")
+}
+finally {
+  print("Finally #2")
+}

unittests/exception_finally.txt

@@ -0,0 +1,4 @@
+3
+Finally #1
+Safe
+Finally #2

unittests/exception_guards.chai

@@ -0,0 +1,28 @@
+for (var i = 2; i < 6; ++i) {
+  try {
+    throw(i)
+  }
+  catch(e) : e < 2 {
+    print("Catch 1: " + e.to_string())
+  }
+  catch(e) : e < 4 {
+    print("Catch 2: " + e.to_string())
+  }
+  catch(e) {
+    print("Catch 3: " + e.to_string())
+  }
+  catch {
+    print("This is never called")
+  }
+}
+
+try {
+  throw(3)
+}
+catch(e) : e < 3 
+{
+  print("Caught less than 3") 
+}
+catch {
+  print("Backup catch")
+}

unittests/exception_guards.txt

@@ -0,0 +1,5 @@
+Catch 2: 2
+Catch 2: 3
+Catch 3: 4
+Catch 3: 5
+Backup catch

unittests/for_each_range.chai

@@ -0,0 +1,3 @@
+var v = [1,2,3];
+var r = range(v);
+for_each(r, print)

unittests/for_each_range.txt

@@ -0,0 +1,3 @@
+1
+2
+3

unittests/for_each_retro.chai

@@ -0,0 +1,3 @@
+var v = [1,2,3];
+var r = retro(range(v));
+for_each(r, print)

unittests/for_each_retro.txt

@@ -0,0 +1,3 @@
+3
+2
+1

unittests/function_reassignment.chai

@@ -0,0 +1,3 @@
+var x = `+`
+x = `-`
+print(x(5,4))

unittests/function_reassignment.txt

@@ -0,0 +1 @@
+1

unittests/instring_eval.chai

@@ -0,0 +1,3 @@
+var bob = 5.5
+print("${bob}")
+print("val: ${5.5 + 2.5} and ${bob + 2.5}")

unittests/instring_eval.txt

@@ -0,0 +1,2 @@
+5.5
+val: 8 and 8

unittests/instring_eval_more.chai

@@ -0,0 +1,4 @@
+print("$ {4 + 5}")
+print("$${4+5}")
+print("Value: \${4 + 5}")
+print("Value: \$${4 + 5}")

unittests/instring_eval_more.txt

@@ -0,0 +1,4 @@
+$ {4 + 5}
+$9
+Value: ${4 + 5}
+Value: $9

unittests/invalid_function_assignment.chai

@@ -0,0 +1 @@
+clone = `-`

unittests/invalid_function_assignment.txt

@@ -0,0 +1 @@
+Error: "Mismatched types in equation" in 'unittests/invalid_function_assignment.chai' at (1, 7)

unittests/invalid_function_reassignment.chai

@@ -0,0 +1,2 @@
+var x = 5
+x = `-`

unittests/invalid_function_reassignment.txt

@@ -0,0 +1 @@
+Error: "Mismatched types in equation" in 'unittests/invalid_function_reassignment.chai' at (2, 3)

unittests/list_push_back.chai

@@ -0,0 +1,6 @@
+load_module("stl_extra")
+
+var x = List()
+x.push_back(3)
+x.push_back("A")
+print(x)

unittests/list_push_back.txt

@@ -0,0 +1 @@
+[3, A]

unittests/list_push_front.chai

@@ -0,0 +1,6 @@
+load_module("stl_extra")
+
+var x = List()
+x.push_front(3)
+x.push_front("A")
+print(x)

unittests/list_push_front.txt

@@ -0,0 +1 @@
+[A, 3]

unittests/load_module.chai

@@ -0,0 +1,2 @@
+load_module("test")
+print(hello_world())

unittests/load_module.txt

@@ -0,0 +1 @@
+Hello World

unittests/loop_inner_outer.chai

@@ -0,0 +1,10 @@
+var total = 0
+
+for (var i = 0; i < 10; ++i) {
+  for (var j = 0; j < 10; ++j) {
+    total += 1
+  }
+}
+
+print(total)
+    

unittests/loop_inner_outer.txt

@@ -0,0 +1 @@
+100

unittests/math_dec.chai

@@ -1 +1,2 @@
-print(--3)
+var i = 3
+print(--i)

unittests/math_inc.chai

@@ -1 +1,2 @@
-print(++3)
+var i = 3
+print(++i)

unittests/multiline.chai

@@ -0,0 +1,7 @@
+var x = [1, 2,
+ 3, 4]
+
+print(x)
+
+print(map(x, 
+ fun(x) { x + 1 }))

unittests/multiline.txt

@@ -0,0 +1,2 @@
+[1, 2, 3, 4]
+[2, 3, 4, 5]

unittests/object_attr.chai

@@ -0,0 +1,5 @@
+attr bob::z
+def bob::bob() { this.z = 10 }
+var x = bob()
+def bob::fred(x) { this.z - x }
+print(x.fred(3))

unittests/object_attr.txt

@@ -0,0 +1 @@
+7

unittests/object_clone.chai

@@ -0,0 +1,11 @@
+attr bob::z
+def bob::bob() { }
+
+var x = bob();
+x.z = 10;
+
+var y = clone(x);
+y.z = 20;
+
+print(x.z);
+print(y.z);

unittests/object_clone.txt

@@ -0,0 +1,2 @@
+10
+20

unittests/object_constructor_guards.chai

@@ -0,0 +1,5 @@
+def bob::bob(x) : x < 10 { print("constructed less than 10: " + x.to_string()) }
+def bob::bob(x) { print("constructed any old: " + x.to_string()) }
+
+var b = bob(12)
+var c = bob(3)

unittests/object_constructor_guards.txt

@@ -0,0 +1,2 @@
+constructed any old: 12
+constructed less than 10: 3

unittests/object_method_guards.chai

@@ -0,0 +1,7 @@
+def bob::bob() { }
+def bob::fred(e) : e < 10 { print("e less than 10") }
+def bob::fred(e) { print("e is some value") }
+
+var b = bob()
+b.fred(3)
+b.fred(12)

unittests/object_method_guards.txt

@@ -0,0 +1,2 @@
+e less than 10
+e is some value

unittests/ref_equal.chai

@@ -0,0 +1,4 @@
+var i = 3
+var j := i
+j = 4
+print(i)

unittests/ref_equal.txt

@@ -0,0 +1 @@
+4

unittests/retroretro.chai

@@ -0,0 +1,7 @@
+var x = [1, 2, 3, 4]
+var r = retro(range(x))
+r.pop_back()
+var r2 = retro(r)
+r2.pop_front()
+print(r.back())
+print(r2.front())

unittests/retroretro.txt

@@ -0,0 +1,2 @@
+2
+3

unittests/runtime_error.chai

@@ -0,0 +1,6 @@
+try {
+  throw(runtime_error("error"))
+}
+catch(e) {
+  print(e.what())
+}

unittests/runtime_error.txt

@@ -0,0 +1 @@
+error