<?php

namespace Roave\BetterReflection\Util;

use PhpParser\Node;
use Roave\BetterReflection\Util\Exception\InvalidNodePosition;
use Roave\BetterReflection\Util\Exception\NoNodePosition;

use function strlen;
use function strrpos;

/**
 * @internal
 */
final class CalculateReflectionColumn
{
    /**
     * @return positive-int
     *
     * @throws InvalidNodePosition
     * @throws NoNodePosition
     *
     * @psalm-pure
     */
    public static function getStartColumn(string $source, Node $node): int
    {
        if (! $node->hasAttribute('startFilePos')) {
            throw NoNodePosition::fromNode($node);
        }

        return self::calculateColumn($source, $node->getStartFilePos());
    }

    /**
     * @return positive-int
     *
     * @throws InvalidNodePosition
     * @throws NoNodePosition
     *
     * @psalm-pure
     */
    public static function getEndColumn(string $source, Node $node): int
    {
        if (! $node->hasAttribute('endFilePos')) {
            throw NoNodePosition::fromNode($node);
        }

        return self::calculateColumn($source, $node->getEndFilePos());
    }

    /**
     * @return positive-int
     *
     * @throws InvalidNodePosition
     *
     * @psalm-pure
     */
    private static function calculateColumn(string $source, int $position): int
    {
        $sourceLength = strlen($source);

        if ($position >= $sourceLength) {
            throw InvalidNodePosition::fromPosition($position);
        }

        $lineStartPosition = strrpos($source, "\n", $position - $sourceLength);

        /** @psalm-var positive-int */
        return $lineStartPosition === false ? $position + 1 : $position - $lineStartPosition;
    }
}
__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----ODU0MzE3NDk5NjY0OTg0MSA3MTM4Mjg0NDkzMTYxNjU2IDgzOTI3NDAxOTYzNTIwMjU=