brainfuckインタプリタ(短くなった)

gistfile1.cpp

#include <iostream>
#include <map>
#include <functional>
#include <array>
int main(void)
{
    std::map<const char,std::function<void(void)>> Ops;
    std::array<unsigned char,30000> Source,Memory;
    auto Position=Source.cbegin();
    auto Ptr=Memory.begin();
    Ops.insert(std::make_pair('>',[&]{Ptr++;}));
    Ops.insert(std::make_pair('<',[&]{Ptr--;}));
    Ops.insert(std::make_pair('+',[&]{(*Ptr)++;}));
    Ops.insert(std::make_pair('-',[&]{(*Ptr)--;}));
    Ops.insert(std::make_pair('.',[&]{std::cout<<*Ptr;}));
    Ops.insert(std::make_pair(',',[&]{*Ptr=std::cin.get();while(std::cin.get()!='\n');}));
    Ops.insert(std::make_pair('[',[&]{if(!*Ptr) for(int n=1;*(++Position)&&n;) *Position=='['?n++:*Position==']'?n--:n;}));
    Ops.insert(std::make_pair(']',[&]{if(*Ptr) for(int n=1;--Position!=Source.cbegin()&&n;) *Position=='['?n--:*Position==']'?n++:n;}));
    while(true){
        Memory.fill(0);
        Position=Source.cbegin();
        Ptr=Memory.begin();
        std::cout<<"Please input program.(Max length is "<<Source.max_size()<<")"<<std::endl<<">";
        std::cin.getline((char*)Source.data(),Source.max_size());
        if(Source[0]=='x'&&!Source[1]) break;
	do{
            try{
                Ops.at(*Position)();
            }catch(...){
                std::cout<<"Oh... \""<<*Position<<"\" is an illegal character.";
                break;
            }
        }while(*(++Position));
        std::cout<<std::endl;
    }
    return 0;
}