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psalm/examples/TemplateScanner.php

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<?php
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namespace Psalm\Examples\Template;
use InvalidArgumentException;
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use PhpParser;
use Psalm;
use Psalm\Codebase;
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use Psalm\DocComment;
use Psalm\Progress\Progress;
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use Psalm\Storage\FileStorage;
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use function explode;
use function preg_match;
use function trim;
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class TemplateScanner extends Psalm\Internal\Scanner\FileScanner
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{
const VIEW_CLASS = 'Your\\View\\Class';
public function scan(
Codebase $codebase,
FileStorage $file_storage,
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bool $storage_from_cache = false,
?Progress $progress = null
): void {
$stmts = $codebase->statements_provider->getStatementsForFile(
$file_storage->file_path,
7_04_00,
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$progress,
);
if ($stmts === []) {
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return;
}
$first_stmt = $stmts[0];
if (($first_stmt instanceof PhpParser\Node\Stmt\Nop) && ($doc_comment = $first_stmt->getDocComment())) {
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$comment_block = DocComment::parsePreservingLength($doc_comment);
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if (isset($comment_block->tags['variablesfrom'])) {
$variables_from = trim($comment_block->tags['variablesfrom'][0]);
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$first_line_regex = '/([A-Za-z\\\0-9]+::[a-z_A-Z]+)(\s+weak)?/';
$matches = [];
if (!preg_match($first_line_regex, $variables_from, $matches)) {
throw new InvalidArgumentException('Could not interpret doc comment correctly');
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}
[$fq_class_name] = explode('::', $matches[1]);
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$codebase->scanner->queueClassLikeForScanning(
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$fq_class_name,
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true,
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);
}
}
$codebase->scanner->queueClassLikeForScanning(self::VIEW_CLASS);
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parent::scan($codebase, $file_storage, $storage_from_cache, $progress);
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}
}