pub fn lookup_route<'a, 'b>(
        &'a self,
        method: &'b Method,
        path: &'b str,
    ) -> Result<RouterLookupResult<'a>, HttpError> {
        let all_segments = path_to_segments(path);
        let mut node = &self.root;
        let mut variables: BTreeMap<String, String> = BTreeMap::new();

        for segment in all_segments {
            let segment_string = segment.to_string();

            node = match &node.edges {
                None => None,
                Some(HttpRouterEdges::Literals(edges)) => {
                    edges.get(&segment_string)
                }
                Some(HttpRouterEdges::Variable(varname, ref node)) => {
                    variables.insert(varname.clone(), segment_string);
                    Some(node)
                }
            }
            .ok_or_else(|| {
                HttpError::for_not_found(
                    None,
                    String::from("no route found (no path in router)"),
                )
            })?
        }

        /*
         * As a somewhat special case, if one requests a node with no handlers
         * at all, report a 404.  We could probably treat this as a 405 as well.
         */
        if node.methods.is_empty() {
            return Err(HttpError::for_not_found(
                None,
                String::from("route has no handlers"),
            ));
        }

        let methodname = method.as_str().to_uppercase();
        node.methods
            .get(&methodname)
            .map(|handler| RouterLookupResult {
                handler: &*handler.handler,
                variables,
            })
            .ok_or_else(|| {
                HttpError::for_status(None, StatusCode::METHOD_NOT_ALLOWED)
            })
    }
/**
     * Look up the route handler for an HTTP request having method `method` and
     * URI path `path`.  A successful lookup produces a `RouterLookupResult`,
     * which includes both the handler that can process this request and a map
     * of variables assigned based on the request path as part of the lookup.
     * On failure, this returns an `HttpError` appropriate for the failure
     * mode.
     *
     * TODO-cleanup
     * consider defining a separate struct type for url-encoded vs. not?
     */
Look up the route handler for an HTTP request having method `method` and
URI path `path`.  A successful lookup produces a `RouterLookupResult`,
which includes both the handler that can process this request and a map
of variables assigned based on the request path as part of the lookup.
On failure, this returns an `HttpError` appropriate for the failure
mode.


Look up the route handler for an HTTP request having method ` method ` and URI path ` path ` . A successful lookup produces a ` RouterLookupResult ` which includes both the handler that can process this request and a map of variables assigned based on the request path as part of the lookup . On failure this returns an ` HttpError ` appropriate for the failure mode .
pub fn lookup_route<'a, 'b>(
        &'a self,
        method: &'b Method,
        path: &'b str,
    ) -> Result<RouterLookupResult<'a>, HttpError> {
        let all_segments = path_to_segments(path);
        let mut node = &self.root;
        let mut variables: BTreeMap<String, String> = BTreeMap::new();
        for segment in all_segments {
            let segment_string = segment.to_string();
            node = match &node.edges {
                None => None,
                Some(HttpRouterEdges::Literals(edges)) => {
                    edges.get(&segment_string)
                }
                Some(HttpRouterEdges::Variable(varname, ref node)) => {
                    variables.insert(varname.clone(), segment_string);
                    Some(node)
                }
            }
            .ok_or_else(|| {
                HttpError::for_not_found(
                    None,
                    String::from("no route found (no path in router)"),
                )
            })?
        }
        /*
         * As a somewhat special case, if one requests a node with no handlers
         * at all, report a 404.  We could probably treat this as a 405 as well.
         */
        if node.methods.is_empty() {
            return Err(HttpError::for_not_found(
                None,
                String::from("route has no handlers"),
            ));
        }
        let methodname = method.as_str().to_uppercase();
        node.methods
            .get(&methodname)
            .map(|handler| RouterLookupResult {
                handler: &*handler.handler,
                variables,
            })
            .ok_or_else(|| {
                HttpError::for_status(None, StatusCode::METHOD_NOT_ALLOWED)
            })
    }
pub fn lookup_route < ' a , ' b > ( & ' a self , method : & ' b Method , path : & ' b str , ) -> Result < RouterLookupResult < ' a > , HttpError > { let all_segments = path_to_segments ( path ) ; let mut node = & self . root ; let mut variables : BTreeMap < String , String > = BTreeMap :: new ( ) ; for segment in all_segments { let segment_string = segment . to_string ( ) ; node = match & node . edges { None => None , Some ( HttpRouterEdges :: Literals ( edges ) ) => { edges . get ( & segment_string ) } Some ( HttpRouterEdges :: Variable ( varname , ref node ) ) => { variables . insert ( varname . clone ( ) , segment_string ) ; Some ( node ) } } . ok_or_else ( | | { HttpError :: for_not_found ( None , String :: from ( " " ) , ) } ) ? } /*
         * As a somewhat special case, if one requests a node with no handlers
         * at all, report a 404.  We could probably treat this as a 405 as well.
         */ if node . methods . is_empty ( ) { return Err ( HttpError :: for_not_found ( None , String :: from ( " " ) , ) ) ; } let methodname = method . as_str ( ) . to_uppercase ( ) ; node . methods . get ( & methodname ) . map ( | handler | RouterLookupResult { handler : & * handler . handler , variables , } ) . ok_or_else ( | | { HttpError :: for_status ( None , StatusCode :: METHOD_NOT_ALLOWED ) } ) }
Look up the route handler for an HTTP request having method `method` and
 URI path `path`.
Look up the route handler for an HTTP request having method ` method ` and URI path ` path ` .
&'a self
method
&'b Method
path
&'b str
&'a self
method
&'b Method
path
&'b str