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DuplicateFunctionAnalyzer.php
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DuplicateFunctionAnalyzer.php
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<?php
declare(strict_types=1);
namespace Phan\Analysis;
use Phan\CodeBase;
use Phan\Issue;
use Phan\Language\Element\FunctionInterface;
use Phan\Language\FQSEN\FullyQualifiedFunctionName;
/**
* Checks to see if the given method is a duplicate of another method
*/
class DuplicateFunctionAnalyzer
{
/**
* Check to see if the given FunctionInterface is a duplicate
*/
public static function analyzeDuplicateFunction(
CodeBase $code_base,
FunctionInterface $method
): void {
$fqsen = $method->getFQSEN();
if (!$fqsen->isAlternate()) {
return;
}
$original_fqsen = $fqsen->getCanonicalFQSEN();
if ($original_fqsen instanceof FullyQualifiedFunctionName) {
if (!$code_base->hasFunctionWithFQSEN($original_fqsen)) {
return;
}
$original_method = $code_base->getFunctionByFQSEN(
$original_fqsen
);
} else {
if (!$code_base->hasMethodWithFQSEN($original_fqsen)) {
return;
}
$original_method = $code_base->getMethodByFQSEN($original_fqsen);
}
$method_name = $method->getName();
if ($original_method->isPHPInternal()) {
Issue::maybeEmit(
$code_base,
$method->getContext(),
Issue::RedefineFunctionInternal,
$method->getFileRef()->getLineNumberStart(),
$method_name,
$method->getFileRef()->getFile(),
$method->getFileRef()->getLineNumberStart()
);
} else {
Issue::maybeEmit(
$code_base,
$method->getContext(),
Issue::RedefineFunction,
$method->getFileRef()->getLineNumberStart(),
$method_name,
$method->getFileRef()->getFile(),
$method->getFileRef()->getLineNumberStart(),
$original_method->getFileRef()->getFile(),
$original_method->getFileRef()->getLineNumberStart()
);
// If there are 3 functions with the same namespace and name,
// warn *once* about the first functions being a duplicate.
// NOTE: This won't work very well in language server mode.
if ($fqsen->getAlternateId() === 1) {
Issue::maybeEmit(
$code_base,
$original_method->getContext(),
Issue::RedefineFunction,
$original_method->getFileRef()->getLineNumberStart(),
$original_method->getName(),
$original_method->getFileRef()->getFile(),
$original_method->getFileRef()->getLineNumberStart(),
$method->getFileRef()->getFile(),
$method->getFileRef()->getLineNumberStart()
);
}
}
}
}

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text/x-php
Expires
Sat, May 16, 19:26 (4 h, 47 m)
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local-disk
Storage Format
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Storage Handle
d3/41/833754ce1c89c1e11893e93c5bdb
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DuplicateFunctionAnalyzer.php (2 KB)

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