//eventStream SSE 事件流
class string.eventStream{
	ctor( tab ){
		
		var r = {}
		for k,v in ..table.eachName(tab){
			if(type(v)=="table"){
			 
				if( v@[["_json"]] ) {
					var is;
					v,is = invoke(v@[["_json"]],v ); 
					if(! (is && type(v)==="string") ){
						v = ..JSON.stringify(v);
					}
				} 
				elseif( ..time.istime(v)){
					v = tostring(v.utc(true),`"%Y-%m-%dT%H:%M:%SZ"`);
				}
				else{
					v = ..JSON.stringify(v);
				}	
			}
			else{
				v = tostring(v);
			}
			
			..table.push(r,k,": ",v,'\r\n');
		}
		
		..table.push(r,#r?'\r\n':'\r\n\r\n')
		
		return ..string.join(r);
	}; 
}

/*****intellisense()
string.eventStream(.(message) = 自动转换 response.eventStream 函数参数为 text/event-stream 格式
end intellisense*****/