Behat / Gherkin

     *

     * @throws ParserException

     */

    protected function parseBackground()

    {

        $token = $this->expectTokenType('Background');

        $title = trim($token['value']);

        $keyword = $token['keyword'];

        $line = $token['line'];

        $example = null;

        if (count($this->popTags())) {

            throw new ParserException(sprintf(

                'Background can not be tagged, but it is on line: %d%s',

                $line,

                $this->file ? ' in file: ' . $this->file : ''

            ));

        }

        // Parse description and steps

        $steps = array();

        $allowedTokenTypes = array('Step', 'Newline', 'Text', 'Comment', 'Examples');

        while (in_array($this->predictTokenType(), $allowedTokenTypes)) {

            $node = $this->parseExpression();

            if ($node instanceof ExampleTableNode) {

                $example = $node;

                continue;

            }

            if ($node instanceof StepNode) {

                $steps[] = $this->normalizeStepNodeKeywordType($node, $steps);

                continue;

            }

            if (!count($steps) && is_string($node)) {

                $text = preg_replace('/^\s{0,' . ($token['indent'] + 2) . '}|\s*$/', '', $node);

                $title .= "\n" . $text;

                continue;

            }

            if ("\n" === $node) {

                continue;

            }

            if (is_string($node)) {

                throw new ParserException(sprintf(

                    'Expected Step, but got text: "%s"%s',

                    $node,

                    $this->file ? ' in file: ' . $this->file : ''

                ));

            }

            if (!$node instanceof StepNode) {

                throw new ParserException(sprintf(

                    'Expected Step, but got %s on line: %d%s',

                    $node->getNodeType(),

                    $node->getLine(),

                    $this->file ? ' in file: ' . $this->file : ''

                ));

            }

        }

        return new BackgroundNode(rtrim($title) ?: null, $steps, $keyword, $line, $example);

    }

    /**

     * Parses scenario token & returns it's node.

     *

     * @throws ParserException

     */

    protected function parseOutline()

    {

        $token = $this->expectTokenType('Outline');

        $title = trim($token['value']);

        $tags = $this->popTags();

        $keyword = $token['keyword'];

        $examples = null;

        $line = $token['line'];

        // Parse description, steps and examples

        $steps = array();

        while (in_array($this->predictTokenType(), array('Step', 'Examples', 'Newline', 'Text', 'Comment'))) {

            $node = $this->parseExpression();

            if ($node instanceof StepNode) {

                $steps[] = $this->normalizeStepNodeKeywordType($node, $steps);

                continue;

            }

            if ($node instanceof ExampleTableNode) {

                $examples = $node;

                continue;

            }

            if (!count($steps) && is_string($node)) {

                $text = preg_replace('/^\s{0,' . ($token['indent'] + 2) . '}|\s*$/', '', $node);

                $title .= "\n" . $text;

                continue;

            }

            if ("\n" === $node) {

                continue;

            }

            if (is_string($node)) {

                throw new ParserException(sprintf(

                    'Expected Step or Examples table, but got text: "%s"%s',

                    $node,

                    $this->file ? ' in file: ' . $this->file : ''

                ));

            }

            if (!$node instanceof StepNode) {

                throw new ParserException(sprintf(

                    'Expected Step or Examples table, but got %s on line: %d%s',

                    $node->getNodeType(),

                    $node->getLine(),

                    $this->file ? ' in file: ' . $this->file : ''

                ));

            }

        }

        if (null === $examples) {

            throw new ParserException(sprintf(

                'Outline should have examples table, but got none for outline "%s" on line: %d%s',

                rtrim($title),

                $line,

                $this->file ? ' in file: ' . $this->file : ''

            ));

        }

        return new OutlineNode(rtrim($title) ?: null, $tags, $steps, $examples, $keyword, $line);

    }

    /**

     * Parses step token & returns it's node.