<?php

namespace League\CommonMark\Util;

use League\CommonMark\Exception\IOException;

/**
 * Reads in a CommonMark spec document and extracts the input/output examples for testing against them
 */
final class SpecReader
{
    private function __construct()
    {
    }

    /**
     * @return iterable<string, array{input: string, output: string, type: string, section: string, number: int}>
     */
    public static function read(string $data): iterable
    {
        // Normalize newlines for platform independence
        $data = \preg_replace('/\r\n?/', "\n", $data);
        \assert($data !== null);
        $data = \preg_replace('/<!-- END TESTS -->.*$/', '', $data);
        \assert($data !== null);
        \preg_match_all('/^`{32} (example ?\w*)\n([\s\S]*?)^\.\n([\s\S]*?)^`{32}$|^#{1,6} *(.*)$/m', $data, $matches, PREG_SET_ORDER);

        $currentSection = 'Example';
        $exampleNumber  = 0;

        foreach ($matches as $match) {
            if (isset($match[4])) {
                $currentSection = $match[4];
                continue;
            }

            yield \trim($currentSection . ' #' . $exampleNumber) => [
                'input'   => \str_replace('→', "\t", $match[2]),
                'output'  => \str_replace('→', "\t", $match[3]),
                'type'    => $match[1],
                'section' => $currentSection,
                'number'  => $exampleNumber++,
            ];
        }
    }

    /**
     * @return iterable<string, array{input: string, output: string, type: string, section: string, number: int}>
     *
     * @throws IOException if the file cannot be loaded
     */
    public static function readFile(string $filename): iterable
    {
        if (($data = \file_get_contents($filename)) === false) {
            throw new IOException(\sprintf('Failed to load spec from %s', $filename));
        }

        return self::read($data);
    }
}
__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----MzQxMDYwMDI3MjE4ODYxNCAyMjEzNDI3MDQzODcyNzg2IDM0NDc5NzgxMTk4NDMyNzk=