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Filename : ParseException.php
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<?php

/*
 * This file is part of the Yosymfony\Toml package.
 *
 * (c) YoSymfony <http://github.com/yosymfony>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Yosymfony\Toml\Exception;

/**
 * Exception class thrown when an error occurs during parsing.
 * Based on ParseException of YAML component from Symfony.
 *
 * @author Victor Puertas <vpgugr@gmail.com>
 */
class ParseException extends \RuntimeException
{
    private $parsedFile;
    private $parsedLine;
    private $snippet;
    private $rawMessage;

    /**
     * Constructor.
     *
     * @param string    $message    The error message
     * @param int       $parsedLine The line where the error occurred
     * @param string|null  $snippet    The snippet of code near the problem
     * @param string|null  $parsedFile The file name where the error occurred
     * @param Exception $previous   The previous exception
     */
    public function __construct(string $message, int $parsedLine = -1, string $snippet = null, string $parsedFile = null, \Exception $previous = null)
    {
        $this->parsedFile = $parsedFile;
        $this->parsedLine = $parsedLine;
        $this->snippet = $snippet;
        $this->rawMessage = $message;

        $this->updateRepr();

        parent::__construct($this->message, 0, $previous);
    }

    /**
     * Gets the snippet of code near the error.
     *
     * @return string The snippet of code
     */
    public function getSnippet() : string
    {
        return $this->snippet;
    }

    /**
     * Sets the snippet of code near the error.
     *
     * @param string $snippet The code snippet
     */
    public function setSnippet(string $snippet) : void
    {
        $this->snippet = $snippet;

        $this->updateRepr();
    }

    /**
     * Gets the filename where the error occurred.
     *
     * This method returns null if a string is parsed.
     *
     * @return string The filename
     */
    public function getParsedFile() : string
    {
        return $this->parsedFile;
    }

    /**
     * Sets the filename where the error occurred.
     *
     * @param string $parsedFile The filename
     */
    public function setParsedFile(string $parsedFile) : void
    {
        $this->parsedFile = $parsedFile;

        $this->updateRepr();
    }

    /**
     * Gets the line where the error occurred.
     *
     * @return int The file line
     */
    public function getParsedLine() : int
    {
        return $this->parsedLine;
    }

    /**
     * Sets the line where the error occurred.
     *
     * @param int $parsedLine The file line
     */
    public function setParsedLine(int $parsedLine) : void
    {
        $this->parsedLine = $parsedLine;

        $this->updateRepr();
    }

    private function updateRepr() : void
    {
        $this->message = $this->rawMessage;

        $dot = false;
        if ('.' === substr($this->message, -1)) {
            $this->message = substr($this->message, 0, -1);
            $dot = true;
        }

        if (null !== $this->parsedFile) {
            $this->message .= sprintf(' in %s', json_encode($this->parsedFile));
        }

        if ($this->parsedLine >= 0) {
            $this->message .= sprintf(' at line %d', $this->parsedLine);
        }

        if ($this->snippet) {
            $this->message .= sprintf(' (near "%s")', $this->snippet);
        }

        if ($dot) {
            $this->message .= '.';
        }
    }
}