func (e *Entry) getExecMatch(name string, matcher Matcher) ExecFunc {
	return func(method, urlStr string) (*Route, []string) {
		offset, matchStr := matcher.Match(urlStr)
		if offset == -1 {
			return nil, nil
		}

		// finish parsing
		if len(urlStr) == offset {
			if h := e.GetHandler(method); h != nil {
				return h, []string{name, matchStr}
			}
			return nil, nil
		}

		for _, entry := range e.entries {
			if h, params := entry.exec(method, urlStr[offset:]); h != nil {
				params = append(params, name, matchStr)
				return h, params
			}
		}
		return nil, nil
	}
}
func (e *Entry) getExecMatch(name string, matcher Matcher) ExecFunc {
	return func(method, urlStr string) (*Route, []string) {
		offset, matchStr := matcher.Match(urlStr)
		if offset == -1 {
			return nil, nil
		}

		// finish parsing
		if len(urlStr) == offset {
			if h := e.GetHandler(method); h != nil {
				return h, []string{name, matchStr}
			}
			return nil, nil
		}

		for _, entry := range e.entries {
			if h, params := entry.exec(method, urlStr[offset:]); h != nil {
				params = append(params, name, matchStr)
				return h, params
			}
		}
		return nil, nil
	}
}
// getExecMatch returns ExecFunc with the given name and mather.