jomike::j_value Symbol_Component_List::derived_get_value(const Arguments& i_args)const{
	assert(i_args.empty());
	(void)i_args;
	//Symbol List getting the value is just getting the value of the last statement

	if(M_components.empty()){
		throw J_Symbol_Error("Trying to get value from empty Symbol List!");
	}

	J_Symbol_Scope new_scope(&symbol_scope());
	j_value return_val = j_value(string(), J_Unit());
	try{
		for(auto symbol : M_components){
			auto symbol_ptr = dynamic_cast<j_symbol*>(symbol);
			if(symbol_ptr){
				symbol_ptr->get_value();
			}

		}
	} catch(J_Routine_Transfer_Exception& e){
		return_val += e.value();
	}

	auto last_symbol = dynamic_cast<j_symbol*>(M_components.back());

	if(!last_symbol){
		throw J_Value_Error("Trying to get value from non j_symbol type. ");
	}

	return  return_val;
}
Exemple #2
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inline child launch(const Executable &exe, const Arguments &args, const Context &ctx) 
{ 
    detail::file_handle fhstdin, fhstdout, fhstderr; 

    BOOST_ASSERT(!args.empty()); 
    BOOST_ASSERT(!ctx.work_directory.empty()); 

#if defined(BOOST_POSIX_API) 
    detail::info_map infoin, infoout; 

    if (ctx.stdin_behavior.get_type() != stream_behavior::close) 
    { 
        detail::stream_info si = detail::stream_info(ctx.stdin_behavior, false); 
        infoin.insert(detail::info_map::value_type(STDIN_FILENO, si)); 
    } 

    if (ctx.stdout_behavior.get_type() != stream_behavior::close) 
    { 
        detail::stream_info si = detail::stream_info(ctx.stdout_behavior, true); 
        infoout.insert(detail::info_map::value_type(STDOUT_FILENO, si)); 
    } 

    if (ctx.stderr_behavior.get_type() != stream_behavior::close) 
    { 
        detail::stream_info si = detail::stream_info(ctx.stderr_behavior, true); 
        infoout.insert(detail::info_map::value_type(STDERR_FILENO, si)); 
    } 

    detail::posix_setup s; 
    s.work_directory = ctx.work_directory; 

    child::id_type pid = detail::posix_start(exe, args, ctx.environment, infoin, infoout, s); 

    if (ctx.stdin_behavior.get_type() == stream_behavior::capture) 
    { 
        fhstdin = detail::posix_info_locate_pipe(infoin, STDIN_FILENO, false); 
        BOOST_ASSERT(fhstdin.valid()); 
    } 

    if (ctx.stdout_behavior.get_type() == stream_behavior::capture) 
    { 
        fhstdout = detail::posix_info_locate_pipe(infoout, STDOUT_FILENO, true); 
        BOOST_ASSERT(fhstdout.valid()); 
    } 

    if (ctx.stderr_behavior.get_type() == stream_behavior::capture) 
    { 
        fhstderr = detail::posix_info_locate_pipe(infoout, STDERR_FILENO, true); 
        BOOST_ASSERT(fhstderr.valid()); 
    } 

    return child(pid, fhstdin, fhstdout, fhstderr); 
#elif defined(BOOST_WINDOWS_API) 
    detail::stream_info behin = detail::stream_info(ctx.stdin_behavior, false); 
    if (behin.type_ == detail::stream_info::use_pipe) 
        fhstdin = behin.pipe_->wend(); 
    detail::stream_info behout = detail::stream_info(ctx.stdout_behavior, true); 
    if (behout.type_ == detail::stream_info::use_pipe) 
        fhstdout = behout.pipe_->rend(); 
    detail::stream_info beherr = detail::stream_info(ctx.stderr_behavior, true); 
    if (beherr.type_ == detail::stream_info::use_pipe) 
        fhstderr = beherr.pipe_->rend(); 

    STARTUPINFOA si; 
    ::ZeroMemory(&si, sizeof(si)); 
    si.cb = sizeof(si); 

    detail::win32_setup s; 
    s.work_directory = ctx.work_directory; 
    s.startupinfo = &si; 

    PROCESS_INFORMATION pi = detail::win32_start(exe, args, ctx.environment, behin, behout, beherr, s); 

    if (!::CloseHandle(pi.hThread)) 
        boost::throw_exception(boost::system::system_error(boost::system::error_code(::GetLastError(), boost::system::get_system_category()), "boost::process::launch: CloseHandle failed")); 

    return child(pi.dwProcessId, fhstdin, fhstdout, fhstderr, detail::file_handle(pi.hProcess)); 
#endif 
}