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BladeSourceMapCompiler.php	4.563KB	edt ren
ViewExceptionMapper.php	6.136KB	edt ren

<?php

namespace Spatie\LaravelIgnition\Views;

use Illuminate\View\Compilers\BladeCompiler;
use Throwable;

class BladeSourceMapCompiler
{
    protected BladeCompiler $bladeCompiler;

public function __construct()
    {
        $this->bladeCompiler = app('blade.compiler');
    }

public function detectLineNumber(string $filename, int $compiledLineNumber): int
    {
        $map = $this->compileSourcemap((string)file_get_contents($filename));

return $this->findClosestLineNumberMapping($map, $compiledLineNumber);
    }

protected function compileSourcemap(string $value): string
    {
        try {
            $value = $this->addEchoLineNumbers($value);

$value = $this->addStatementLineNumbers($value);

$value = $this->addBladeComponentLineNumbers($value);

$value = $this->bladeCompiler->compileString($value);

return $this->trimEmptyLines($value);
        } catch (Throwable $e) {
            report($e);

return $value;
        }
    }

protected function addEchoLineNumbers(string $value): string
    {
        $echoPairs = [['{{', '}}'], ['{{{', '}}}'], ['{!!', '!!}']];

foreach ($echoPairs as $pair) {
            // Matches {{ $value }}, {!! $value !!} and  {{{ $value }}} depending on $pair
            $pattern = sprintf('/(@)?%s\s*(.+?)\s*%s(\r?\n)?/s', $pair[0], $pair[1]);

if (preg_match_all($pattern, $value, $matches, PREG_OFFSET_CAPTURE)) {
                foreach (array_reverse($matches[0]) as $match) {
                    $position = mb_strlen(substr($value, 0, $match[1]));

$value = $this->insertLineNumberAtPosition($position, $value);
                }
            }
        }

return $value;
    }

protected function addStatementLineNumbers(string $value): string
    {
        // Matches @bladeStatements() like @if, @component(...), @etc;
        $shouldInsertLineNumbers = preg_match_all(
            '/\B@(@?\w+(?:::\w+)?)([ \t]*)($ ( (?>[^()]+) | (?3) )* $)?/x',
            $value,
            $matches,
            PREG_OFFSET_CAPTURE
        );

if ($shouldInsertLineNumbers) {
            foreach (array_reverse($matches[0]) as $match) {
                $position = mb_strlen(substr($value, 0, $match[1]));

$value = $this->insertLineNumberAtPosition($position, $value);
            }
        }

return $value;
    }

protected function addBladeComponentLineNumbers(string $value): string
    {
        // Matches the start of `<x-blade-component`
        $shouldInsertLineNumbers = preg_match_all(
            '/<\s*x[-:]([\w\-:.]*)/mx',
            $value,
            $matches,
            PREG_OFFSET_CAPTURE
        );

if ($shouldInsertLineNumbers) {
            foreach (array_reverse($matches[0]) as $match) {
                $position = mb_strlen(substr($value, 0, $match[1]));

$value = $this->insertLineNumberAtPosition($position, $value);
            }
        }

return $value;
    }

protected function insertLineNumberAtPosition(int $position, string $value): string
    {
        $before = mb_substr($value, 0, $position);
        $lineNumber = count(explode("\n", $before));

return mb_substr($value, 0, $position)."|---LINE:{$lineNumber}---|".mb_substr($value, $position);
    }

protected function trimEmptyLines(string $value): string
    {
        $value = preg_replace('/^\|---LINE:([0-9]+)---\|$/m', '', $value);

return ltrim((string)$value, PHP_EOL);
    }

protected function findClosestLineNumberMapping(string $map, int $compiledLineNumber): int
    {
        $map = explode("\n", $map);

// Max 20 lines between compiled and source line number.
        // Blade components can span multiple lines and the compiled line number is often
        // a couple lines below the source-mapped `<x-component>` code.
        $maxDistance = 20;

$pattern = '/\|---LINE:(?P<line>[0-9]+)---\|/m';
        $lineNumberToCheck = $compiledLineNumber - 1;

while (true) {
            if ($lineNumberToCheck < $compiledLineNumber - $maxDistance) {
                // Something wrong. Return the $compiledLineNumber (unless it's out of range)
                return min($compiledLineNumber, count($map));
            }

if (preg_match($pattern, $map[$lineNumberToCheck] ?? '', $matches)) {
                return (int)$matches['line'];
            }

$lineNumberToCheck--;
        }
    }
}

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