diff --git a/abstract_syntax_tree.cpp b/abstract_syntax_tree.cpp
deleted file mode 100644
index e6dc5fb..0000000
--- a/abstract_syntax_tree.cpp
+++ /dev/null
@@ -1,757 +0,0 @@
-#ifndef __ABSTRACT_SYNTAX_TREE_CPP__
-#define __ABSTRACT_SYNTAX_TREE_CPP__
-#include "abstract_syntax_tree.h"
-
-
-int exit_type=0;
-std::stack<var> ret_stack;// for function ret use
-
-var abstract_syntax_tree::calculation()
-{
-	var temp;
-	temp.set_type(__null_type);
-	if(this->type==__number)
-	{
-		temp.set_type(__var_number);
-		temp.set_number(number);
-		return temp;
-	}
-	else if(this->type==__string)
-	{
-		temp.set_type(__var_string);
-		temp.set_string(str);
-		return temp;
-	}
-	else if(this->type==__id)
-	{
-		temp=this->call_identifier();
-		return temp;
-	}
-	else if(this->type==__array)
-	{
-		temp=this->array_generation();
-		return temp;
-	}
-	else if(this->type==__hash)
-	{
-		temp=this->hash_generation();
-		return temp;
-	}
-	else if(this->type==__function)
-	{
-		temp.set_type(__function);
-		temp.set_function(*this);
-		return temp;
-	}
-	if(this->type==__nor_operator)
-	{
-		temp.set_type(__var_number);
-		temp=children.front().calculation();
-		if(temp.get_type()!=__var_number)
-		{
-			exit_type=__error_value_type;
-			std::cout<<">>[Runtime-error] line "<<line<<": must use a number to use \'!\' but use \'";
-			print_scalar(temp.get_type());
-			std::cout<<"\'."<<std::endl;
-		}
-		else
-		{
-			if(temp.get_number())
-				temp.set_number(0);
-			else
-				temp.set_number(1);
-		}
-		return temp;
-	}
-	else if(this->type==__add_operator)
-	{
-		temp.set_type(__var_number);
-		var left_child=children.front().calculation();
-		var right_child=children.back().calculation();
-		if(left_child.get_type()==__var_number && right_child.get_type()==__var_number)
-			temp.set_number(left_child.get_number()+right_child.get_number());
-		else
-		{
-			exit_type=__error_value_type;
-			std::cout<<">>[Runtime-error] line "<<line<<": must use a number to use \'+\' but use \'";
-			print_scalar(left_child.get_type());
-			std::cout<<"\' and \'";
-			print_scalar(right_child.get_type());
-			std::cout<<"\'."<<std::endl;
-		}
-	}
-	else if(this->type==__sub_operator)
-	{
-		temp.set_type(__var_number);
-		std::list<abstract_syntax_tree>::iterator i=children.begin();
-		++i;
-		if(i==children.end())
-		{
-			temp=children.front().calculation();
-			if(temp.get_type()==__var_number)
-				temp.set_number(temp.get_number()*(-1));
-			else
-			{
-				exit_type=__error_value_type;
-				std::cout<<">>[Runtime-error] line "<<line<<": must use a number to use \'-\' but use \'";
-				print_scalar(temp.get_type());
-				std::cout<<"\'."<<std::endl;
-			}
-		}
-		else
-		{
-			var left_child=children.front().calculation();
-			var right_child=children.back().calculation();
-			if(left_child.get_type()==__var_number && right_child.get_type()==__var_number)
-				temp.set_number(left_child.get_number()-right_child.get_number());
-			else
-			{
-				exit_type=__error_value_type;
-				std::cout<<">>[Runtime-error] line "<<line<<": must use a number to use \'-\' but use \'";
-				print_scalar(left_child.get_type());
-				std::cout<<"\' and \'";
-				print_scalar(right_child.get_type());
-				std::cout<<"\'."<<std::endl;
-			}
-		}
-	}
-	else if(this->type==__mul_operator)
-	{
-		temp.set_type(__var_number);
-		var left_child=children.front().calculation();
-		var right_child=children.back().calculation();
-		if(left_child.get_type()==__var_number && right_child.get_type()==__var_number)
-			temp.set_number(left_child.get_number()*right_child.get_number());
-		else
-		{
-			exit_type=__error_value_type;
-			std::cout<<">>[Runtime-error] line "<<line<<": must use a number to use \'*\' but use \'";
-			print_scalar(left_child.get_type());
-			std::cout<<"\' and \'";
-			print_scalar(right_child.get_type());
-			std::cout<<"\'."<<std::endl;
-		}
-	}
-	else if(this->type==__div_operator)
-	{
-		temp.set_type(__var_number);
-		var left_child=children.front().calculation();
-		var right_child=children.back().calculation();
-		if(left_child.get_type()==__var_number && right_child.get_type()==__var_number)
-		{
-			temp.set_number(left_child.get_number()/right_child.get_number());
-			if(std::isnan(temp.get_number()) || std::isinf(temp.get_number()))
-			{
-				exit_type=__sigfpe_arithmetic_exception;
-				std::cout<<">>[Runtime-error] line "<<line<<": get number \'NaN\' or \'Inf\'."<<std::endl;
-			}
-		}
-		else
-		{
-			exit_type=__error_value_type;
-			std::cout<<">>[Runtime-error] line "<<line<<": must use a number to use \'/\' but use \'";
-			print_scalar(left_child.get_type());
-			std::cout<<"\' and \'";
-			print_scalar(right_child.get_type());
-			std::cout<<"\'."<<std::endl;
-		}
-	}
-	else if(this->type==__link_operator)
-	{
-		temp.set_type(__var_string);
-		var left_child=children.front().calculation();
-		var right_child=children.back().calculation();
-		if(left_child.get_type()==__var_string && right_child.get_type()==__var_string)
-			temp.set_string(left_child.get_string()+right_child.get_string());
-		else
-		{
-			exit_type=__error_value_type;
-			std::cout<<">>[Runtime-error] line "<<line<<": must use a string to use \'~\' but use \'";
-			print_scalar(left_child.get_type());
-			std::cout<<"\' and \'";
-			print_scalar(right_child.get_type());
-			std::cout<<"\'."<<std::endl;
-		}
-	}
-	else if(this->type==__cmp_equal)
-	{
-		temp.set_type(__var_number);
-		var left_child=children.front().calculation();
-		var right_child=children.back().calculation();
-		if(left_child.get_type()==right_child.get_type())
-		{
-			if(left_child.get_type()==__var_number)
-				temp.set_number((double)(left_child.get_number()==right_child.get_number()));
-			else if(left_child.get_type()==__var_string)
-				temp.set_number((double)(left_child.get_string()==right_child.get_string()));
-			else
-			{
-				exit_type=__error_value_type;
-				std::cout<<">>[Runtime-error] line "<<line<<": must use number or string to use \'==\' but use \'";
-				print_scalar(left_child.get_type());
-				std::cout<<"\'."<<std::endl;
-			}
-		}
-		else
-		{
-			exit_type=__error_value_type;
-			std::cout<<">>[Runtime-error] line "<<line<<": must use same type to use \'==\' but use \'";
-			print_scalar(left_child.get_type());
-			std::cout<<"\' and \'";
-			print_scalar(right_child.get_type());
-			std::cout<<"\'."<<std::endl;
-		}
-	}
-	else if(this->type==__cmp_not_equal)
-	{
-		temp.set_type(__var_number);
-		var left_child=children.front().calculation();
-		var right_child=children.back().calculation();
-		if(left_child.get_type()==right_child.get_type())
-		{
-			if(left_child.get_type()==__var_number)
-				temp.set_number((double)(left_child.get_number()!=right_child.get_number()));
-			else if(left_child.get_type()==__var_string)
-				temp.set_number((double)(left_child.get_string()!=right_child.get_string()));
-			else
-			{
-				exit_type=__error_value_type;
-				std::cout<<">>[Runtime-error] line "<<line<<": must use number or string to use \'!=\' but use \'";
-				print_scalar(left_child.get_type());
-				std::cout<<"\'."<<std::endl;
-			}
-		}
-		else
-		{
-			exit_type=__error_value_type;
-			std::cout<<">>[Runtime-error] line "<<line<<": must use same type to use \'!=\' but use \'";
-			print_scalar(left_child.get_type());
-			std::cout<<"\' and \'";
-			print_scalar(right_child.get_type());
-			std::cout<<"\'."<<std::endl;
-		}
-	}
-	else if(this->type==__cmp_less)
-	{
-		temp.set_type(__var_number);
-		var left_child=children.front().calculation();
-		var right_child=children.back().calculation();
-		if(left_child.get_type()==right_child.get_type())
-		{
-			if(left_child.get_type()==__var_number)
-				temp.set_number((double)(left_child.get_number()<right_child.get_number()));
-			else if(left_child.get_type()==__var_string)
-				temp.set_number((double)(left_child.get_string()<right_child.get_string()));
-			else
-			{
-				exit_type=__error_value_type;
-				std::cout<<">>[Runtime-error] line "<<line<<": must use number or string to use \'<\' but use \'";
-				print_scalar(left_child.get_type());
-				std::cout<<"\'."<<std::endl;
-			}
-		}
-		else
-		{
-			exit_type=__error_value_type;
-			std::cout<<">>[Runtime-error] line "<<line<<": must use same type to use \'<\' but use \'";
-			print_scalar(left_child.get_type());
-			std::cout<<"\' and \'";
-			print_scalar(right_child.get_type());
-			std::cout<<"\'."<<std::endl;
-		}
-	}
-	else if(this->type==__cmp_more)
-	{
-		temp.set_type(__var_number);
-		var left_child=children.front().calculation();
-		var right_child=children.back().calculation();
-		if(left_child.get_type()==right_child.get_type())
-		{
-			if(left_child.get_type()==__var_number)
-				temp.set_number((double)(left_child.get_number()>right_child.get_number()));
-			else if(left_child.get_type()==__var_string)
-				temp.set_number((double)(left_child.get_string()>right_child.get_string()));
-			else
-			{
-				exit_type=__error_value_type;
-				std::cout<<">>[Runtime-error] line "<<line<<": must use number or string to use \'>\' but use \'";
-				print_scalar(left_child.get_type());
-				std::cout<<"\'."<<std::endl;
-			}
-		}
-		else
-		{
-			exit_type=__error_value_type;
-			std::cout<<">>[Runtime-error] line "<<line<<": must use same type to use \'>\' but use \'";
-			print_scalar(left_child.get_type());
-			std::cout<<"\' and \'";
-			print_scalar(right_child.get_type());
-			std::cout<<"\'."<<std::endl;
-		}
-	}
-	else if(this->type==__cmp_less_or_equal)
-	{
-		temp.set_type(__var_number);
-		var left_child=children.front().calculation();
-		var right_child=children.back().calculation();
-		if(left_child.get_type()==right_child.get_type())
-		{
-			if(left_child.get_type()==__var_number)
-				temp.set_number((double)(left_child.get_number()<=right_child.get_number()));
-			else if(left_child.get_type()==__var_string)
-				temp.set_number((double)(left_child.get_string()<=right_child.get_string()));
-			else
-			{
-				exit_type=__error_value_type;
-				std::cout<<">>[Runtime-error] line "<<line<<": must use number or string to use \'<=\' but use \'";
-				print_scalar(left_child.get_type());
-				std::cout<<"\'."<<std::endl;
-			}
-		}
-		else
-		{
-			exit_type=__error_value_type;
-			std::cout<<">>[Runtime-error] line "<<line<<": must use same type to use \'<=\' but use \'";
-			print_scalar(left_child.get_type());
-			std::cout<<"\' and \'";
-			print_scalar(right_child.get_type());
-			std::cout<<"\'."<<std::endl;
-		}
-	}
-	else if(this->type==__cmp_more_or_equal)
-	{
-		temp.set_type(__var_number);
-		var left_child=children.front().calculation();
-		var right_child=children.back().calculation();
-		if(left_child.get_type()==right_child.get_type())
-		{
-			if(left_child.get_type()==__var_number)
-				temp.set_number((double)(left_child.get_number()>=right_child.get_number()));
-			else if(left_child.get_type()==__var_string)
-				temp.set_number((double)(left_child.get_string()>=right_child.get_string()));
-			else
-			{
-				exit_type=__error_value_type;
-				std::cout<<">>[Runtime-error] line "<<line<<": must use number or string to use \'>=\' but use \'";
-				print_scalar(left_child.get_type());
-				std::cout<<"\'."<<std::endl;
-			}
-		}
-		else
-		{
-			exit_type=__error_value_type;
-			std::cout<<">>[Runtime-error] line "<<line<<": must use same type to use \'>=\' but use \'";
-			print_scalar(left_child.get_type());
-			std::cout<<"\' and \'";
-			print_scalar(right_child.get_type());
-			std::cout<<"\'."<<std::endl;
-		}
-	}
-	else if(this->type==__or_operator)
-	{
-		temp.set_type(__var_number);
-		var left_child=children.front().calculation();
-		var right_child=children.back().calculation();
-		if(left_child.get_type()==__var_number && right_child.get_type()==__var_number)
-			temp.set_number((double)(left_child.get_number() || right_child.get_number()));
-		else
-		{
-			exit_type=__error_value_type;
-			std::cout<<">>[Runtime-error] line "<<line<<": must use same type to use \'or\' but use \'";
-			print_scalar(left_child.get_type());
-			std::cout<<"\' and \'";
-			print_scalar(right_child.get_type());
-			std::cout<<"\'."<<std::endl;
-		}
-	}
-	else if(this->type==__and_operator)
-	{
-		temp.set_type(__var_number);
-		var left_child=children.front().calculation();
-		var right_child=children.back().calculation();
-		if(left_child.get_type()==__var_number && right_child.get_type()==__var_number)
-			temp.set_number((double)(left_child.get_number() && right_child.get_number()));
-		else
-		{
-			exit_type=__error_value_type;
-			std::cout<<">>[Runtime-error] line "<<line<<": must use same type to use \'and\' but use \'";
-			print_scalar(left_child.get_type());
-			std::cout<<"\' and \'";
-			print_scalar(right_child.get_type());
-			std::cout<<"\'."<<std::endl;
-		}
-	}
-	else
-	{
-		exit_type=__error_value_type;
-		std::cout<<">>[Runtime-error] line "<<line<<": error type occurred when doing calculation."<<std::endl;
-	}
-	return temp;
-}
-
-bool abstract_syntax_tree::condition_check()
-{
-	bool ret=false;
-	var temp=calculation();
-	if(temp.get_type()==__var_number)
-	{
-		if(temp.get_number())
-			ret=true;
-	}
-	else
-	{
-		exit_type=__error_value_type;
-		std::cout<<">>[Runtime-error] line "<<line<<": must use a number to make a choice but use \'";
-		print_scalar(temp.get_type());
-		std::cout<<"\'."<<std::endl;
-	}
-	return ret;
-}
-
-var abstract_syntax_tree::call_identifier()
-{
-	var temp;
-	temp.set_type(__null_type);
-	if(scope.search_var(name))
-		temp=scope.get_var(name);
-	else
-	{
-		std::cout<<">>[Runtime-error] line "<<line<<": cannot find a var named \'"<<name<<"\'."<<std::endl;
-		exit_type=__find_var_failure;
-		return temp;
-	}
-	if(!children.empty())
-	{
-		for(std::list<abstract_syntax_tree>::iterator i=children.begin();i!=children.end();++i)
-		{
-			if(i->type==__call_array && temp.get_type()==__var_array)
-			{
-				var place=i->children.front().calculation();
-				if(place.get_type()==__var_number)
-					temp=temp.get_array_member((int)place.get_number());
-				else
-				{
-					exit_type=__error_value_type;
-					std::cout<<">>[Runtime-error] line "<<line<<": ";
-					print_detail_token(i->type);
-					std::cout<<": incorrect type \'";
-					print_scalar(temp.get_type());
-					std::cout<<"\'."<<std::endl;
-					break;
-				}
-			}
-			else if(i->type==__call_hash && temp.get_type()==__var_hash)
-			{
-				temp=temp.get_hash_member(i->name);
-				if(temp.get_type()==__null_type)
-				{
-					exit_type=__get_value_failure;
-					std::cout<<">>[Runtime-error] line "<<line<<": cannot find a hash-member named \'"<<i->name<<"\'."<<std::endl;
-					break;
-				}
-			}
-			else if(i->type==__call_function && temp.get_type()==__var_function)
-				temp=temp.get_function().run_func();
-			else
-			{
-				exit_type=__error_value_type;
-				std::cout<<">>[Runtime-error] line "<<line<<": ";
-				print_detail_token(i->type);
-				std::cout<<": incorrect type \'";
-				print_scalar(temp.get_type());
-				std::cout<<"\'."<<std::endl;
-			}
-		}
-	}
-	return temp;
-}
-
-var abstract_syntax_tree::array_generation()
-{
-	var new_var;
-	new_var.set_type(__var_array);
-	if(!children.empty())
-		for(std::list<abstract_syntax_tree>::iterator i=children.begin();i!=children.end();++i)
-			new_var.append_array(i->calculation());
-	return new_var;
-}
-
-var abstract_syntax_tree::hash_generation()
-{
-	var new_var;
-	new_var.set_type(__var_hash);
-	if(!children.empty())
-		for(std::list<abstract_syntax_tree>::iterator i=children.begin();i!=children.end();++i)
-		{
-			var temp;
-			temp=i->children.front().calculation();
-			temp.set_name(i->name);
-			new_var.append_hash(temp);
-		}
-	return new_var;
-}
-
-var abstract_syntax_tree::get_value()
-{
-	var temp;
-	temp.set_type(type);
-	if(type==__id)
-		temp=call_identifier();
-	else if(type==__number)
-		temp.set_number(number);
-	else if(type==__string)
-		temp.set_string(str);
-	else if(type==__array)
-	{
-		var new_var;
-		for(std::list<abstract_syntax_tree>::iterator i=children.begin();i!=children.end();++i)
-		{
-			new_var=i->get_value();
-			temp.append_array(new_var);
-		}
-	}
-	else if(type==__hash)
-	{
-		var new_var;
-		for(std::list<abstract_syntax_tree>::iterator i=children.begin();i!=children.end();++i)
-		{
-			new_var=i->children.begin()->get_value();
-			new_var.set_name(i->name);
-			temp.append_array(new_var);
-		}
-	}
-	else if(type==__function)
-		temp.set_function(*this);
-	else
-	{
-		std::cout<<">>[Runtime-error] line "<<line<<": incorrect value."<<std::endl;
-		exit_type=__get_value_failure;
-	}
-	return temp;
-}
-void abstract_syntax_tree::run_root()
-{
-	while(!ret_stack.empty())ret_stack.pop();
-	scope.set_clear();
-	int beg_time,end_time;
-	exit_type=__process_exited_successfully;
-	
-	beg_time=time(NULL);
-	for(std::list<abstract_syntax_tree>::iterator i=children.begin();i!=children.end();++i)
-	{
-		if(i->type==__definition)
-		{
-			var new_var;
-			std::list<abstract_syntax_tree>::iterator j=i->children.begin();
-			std::string _name=j->name;
-			if(!scope.search_var(_name))
-			{
-				++j;
-				if(j!=i->children.end())
-					new_var=j->calculation();
-				new_var.set_name(_name);
-				scope.add_new_var(new_var);
-			}
-			else
-			{
-				std::cout<<">>[Runtime-error] line "<<line<<": redeclaration of \'"<<_name<<"\'."<<std::endl;
-				exit_type=__redeclaration;
-				break;
-			}
-		}
-		else if(i->type==__equal || i->type==__add_equal || i->type==__sub_equal || i->type==__mul_equal || i->type==__div_equal || i->type==__link_equal)
-		{
-			;
-		}
-		else if(i->type==__add_operator || i->type==__sub_operator || i->type==__mul_operator || i->type==__div_operator || i->type==__link_operator || i->type==__or_operator || i->type==__and_operator || i->type==__nor_operator)
-		{
-			var t=i->calculation();
-			if(t.get_type()==__var_number)
-				std::cout<<t.get_number()<<std::endl;
-			else if(t.get_type()==__var_string)
-				std::cout<<t.get_string()<<std::endl;
-		}
-		else if(i->type==__number)
-			std::cout<<i->number<<std::endl;
-		else if(i->type==__string)
-			std::cout<<i->str<<std::endl;
-		else if(i->type==__id)
-		{
-			var t=i->call_identifier();
-			if(t.get_type()==__var_number)
-				std::cout<<t.get_number()<<std::endl;
-			else if(t.get_type()==__var_string)
-				std::cout<<t.get_string()<<std::endl;
-		}
-		else if(i->type==__while)
-		{
-			scope.add_new_block_scope();
-			i->run_loop();
-			scope.pop_last_block_scope();
-		}
-		else if(i->type==__ifelse)
-		{
-			scope.add_new_block_scope();
-			i->run_ifelse();
-			scope.pop_last_block_scope();
-		}
-		if(exit_type!=__process_exited_successfully)
-			break;
-	}
-	end_time=time(NULL);
-	std::cout<<"--------------------------------------------------------------------------------------"<<std::endl;
-	std::cout<<">>[Runtime] process exited after "<<end_time-beg_time<<" sec(s) with returned state \'";
-	print_exit_type(exit_type);
-	std::cout<<"\'."<<std::endl;
-	scope.set_clear();
-	return;
-}
-
-int abstract_syntax_tree::run_loop()
-{
-	int ret=0;
-	scope.add_new_local_scope();
-	
-	abstract_syntax_tree condition=children.front();
-	abstract_syntax_tree blk=children.back();
-	while(condition.condition_check())
-	{
-		int type=blk.run_block();
-		if(type==__break)
-			break;
-		else if(type==__return)
-		{
-			ret=__return;
-			break;
-		}
-		if(exit_type!=__process_exited_successfully)
-			break;
-	}
-	scope.pop_last_local_scope();
-	return ret;
-}
-
-int abstract_syntax_tree::run_ifelse()
-{
-	int ret=0;
-	scope.add_new_local_scope();
-	for(std::list<abstract_syntax_tree>::iterator i=children.begin();i!=children.end();++i)
-	{
-		if(i->type!=__else && i->children.front().condition_check())
-		{
-			ret=i->children.back().run_block();
-			break;
-		}
-		else
-		{
-			ret=i->children.back().run_block();
-			break;
-		}
-	}
-	scope.pop_last_local_scope();
-	return ret;
-}
-
-var abstract_syntax_tree::run_func()
-{
-	var ret;
-	scope.add_new_block_scope();
-	scope.add_new_local_scope();
-	
-	//get return
-	scope.pop_last_block_scope();
-	ret=ret_stack.top();
-	ret_stack.pop();
-	return ret;
-}
-
-int abstract_syntax_tree::run_block()
-{
-	scope.add_new_local_scope();
-	for(std::list<abstract_syntax_tree>::iterator i=children.begin();i!=children.end();++i)
-	{
-		if(i->type==__definition)
-		{
-			var new_var;
-			std::list<abstract_syntax_tree>::iterator j=i->children.begin();
-			std::string _name=j->name;
-			if(!scope.search_var(_name))
-			{
-				++j;
-				if(j!=i->children.end())
-					new_var=j->calculation();
-				new_var.set_name(_name);
-				scope.add_new_var(new_var);
-			}
-			else
-			{
-				std::cout<<">>[Runtime-error] line "<<line<<": redeclaration of \'"<<_name<<"\'."<<std::endl;
-				exit_type=__redeclaration;
-			}
-		}
-		else if(i->type==__number)
-			std::cout<<i->number<<std::endl;
-		else if(i->type==__string)
-			std::cout<<i->str<<std::endl;
-		else if(i->type==__id)
-		{
-			var t=i->call_identifier();
-			if(t.get_type()==__var_number)
-				std::cout<<t.get_number()<<std::endl;
-			else if(t.get_type()==__var_string)
-				std::cout<<t.get_string()<<std::endl;
-		}
-		else if(i->type==__equal || i->type==__add_equal || i->type==__sub_equal || i->type==__mul_equal || i->type==__div_equal || i->type==__link_equal)
-		{
-			;
-		}
-		else if(i->type==__add_operator || i->type==__sub_operator || i->type==__mul_operator || i->type==__div_operator || i->type==__link_operator || i->type==__or_operator || i->type==__and_operator || i->type==__nor_operator)
-		{
-			var t=i->calculation();
-			if(t.get_type()==__var_number)
-				std::cout<<t.get_number()<<std::endl;
-			else if(t.get_type()==__var_string)
-				std::cout<<t.get_string()<<std::endl;
-		}
-		else if(i->type==__while)
-		{
-			int type=i->run_loop();
-			if(type)
-			{
-				if(type==__return)
-					return type;
-				else
-				{
-					std::cout<<"[Runtime-error] line "<<line<<": incorrect use of break/continue."<<std::endl;
-					exit_type=__error_command_use;
-				}
-			}
-		}
-		else if(i->type==__ifelse)
-		{
-			int type=i->run_ifelse();
-			if(type)
-				return type;
-		}
-		else if(i->type==__continue)
-			return __continue;
-		else if(i->type==__break)
-			return __break;
-		else if(i->type==__return)
-		{
-			var temp;
-			temp.set_type(__null_type);
-			if(!(i->children.empty()))
-				temp=i->calculation();
-			ret_stack.push(temp);
-			return __return;
-		}
-		if(exit_type!=__process_exited_successfully)
-			break;
-	}
-	scope.pop_last_local_scope();
-	return 0;
-}
-
-
-#endif