src/Routes/Router.php
protected function buildPathExpressions($path, $store = false) {
        $segments = $this->routeParser->parse($path);
        $expressions = [];
        foreach ($segments as $segmentGroup) {
            $expression = '';
            $params = [];
            $staticPart = '/';
            $staticPartEnded = false;
            foreach ($segmentGroup as $segment) {
                if (is_string($segment)) {
                    $expression .= $segment;
                    if (!$staticPartEnded) {
                        $staticPart .= $segment;
                    }
                } elseif (is_array($segment)) {
                    $staticPartEnded = true;
                    $expression .= '{' . $segment[0] . '}';
                    $params[] = $segment[0];
                }
            }
            $staticPart = '/' . trim($staticPart, '/');
            if ($store && !empty($params)) {
                $row = [
                    'exp' => $expression,
                    'params' => $params,
                ];
                $this->_routePaths[$staticPart] = isset($this->_routePaths[$staticPart]) ? $this->_routePaths[$staticPart] : [];
                $this->_routePaths[$staticPart][] = $row;
            }
            $expressions[$expression] = [
                'expression' => $expression,
                'prefix' => $staticPart,
                'params' => $params,
            ];
        }

        return $expressions;
    }
protected function buildPathExpressions($path, $store = false) {
        $segments = $this->routeParser->parse($path);
        $expressions = [];
        foreach ($segments as $segmentGroup) {
            $expression = '';
            $params = [];
            $staticPart = '/';
            $staticPartEnded = false;
            foreach ($segmentGroup as $segment) {
                if (is_string($segment)) {
                    $expression .= $segment;
                    if (!$staticPartEnded) {
                        $staticPart .= $segment;
                    }
                } elseif (is_array($segment)) {
                    $staticPartEnded = true;
                    $expression .= '{' . $segment[0] . '}';
                    $params[] = $segment[0];
                }
            }
            $staticPart = '/' . trim($staticPart, '/');
            if ($store && !empty($params)) {
                $row = [
                    'exp' => $expression,
                    'params' => $params,
                ];
                $this->_routePaths[$staticPart] = isset($this->_routePaths[$staticPart]) ? $this->_routePaths[$staticPart] : [];
                $this->_routePaths[$staticPart][] = $row;
            }
            $expressions[$expression] = [
                'expression' => $expression,
                'prefix' => $staticPart,
                'params' => $params,
            ];
        }

        return $expressions;
    }
Build path expression from router path
@param string $path
@param bool $store
@return array