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PrefixedGlobalFunctionsSniff.php
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PrefixedGlobalFunctionsSniff.php
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<?php
/**
* Verify that global functions start with a valid prefix
*
* For MediaWiki code, the valid prefixes are `wf` (or `ef` in some legacy
* extension code, per https://www.mediawiki.org/wiki/Manual:Coding_conventions/PHP#Naming),
* by default the sniff only allows `wf`, but repositories
* can configure this via the `allowedPrefixes` property.
*/
namespace MediaWiki\Sniffs\NamingConventions;
use PHP_CodeSniffer\Files\File;
use PHP_CodeSniffer\Sniffs\Sniff;
class PrefixedGlobalFunctionsSniff implements Sniff {
/** @var string[] */
public array $ignoreList = [];
/**
* A list of global function prefixes allowed.
*
* @var string[]
*/
public array $allowedPrefixes = [ 'wf' ];
/**
* @inheritDoc
*/
public function register(): array {
return [ T_FUNCTION ];
}
/**
* @var int[] array containing the first locations of namespaces in files that we have seen so far.
*/
private array $firstNamespaceLocations = [];
/**
* @param File $phpcsFile
* @param int $ptr The current token index.
*
* @return bool Does a namespace statement exist before this position in the file?
*/
private function tokenIsNamespaced( File $phpcsFile, int $ptr ): bool {
$fileName = $phpcsFile->getFilename();
// Check if we already know if the token is namespaced or not
if ( !isset( $this->firstNamespaceLocations[$fileName] ) ) {
// If not scan the whole file at once looking for namespacing or lack of and set in the statics.
$tokens = $phpcsFile->getTokens();
$numTokens = $phpcsFile->numTokens;
for ( $tokenIndex = 0; $tokenIndex < $numTokens; $tokenIndex++ ) {
$token = $tokens[$tokenIndex];
if ( $token['code'] === T_NAMESPACE && !isset( $token['scope_opener'] ) ) {
// In the format of "namespace Foo;", which applies to everything below
$this->firstNamespaceLocations[$fileName] = $tokenIndex;
break;
}
if ( isset( $token['scope_closer'] ) ) {
// Skip any non-zero level code as it can not contain a relevant namespace
$tokenIndex = $token['scope_closer'];
continue;
}
}
// Nothing found, just save unreachable token index
if ( !isset( $this->firstNamespaceLocations[$fileName] ) ) {
$this->firstNamespaceLocations[$fileName] = $numTokens;
}
}
// Return if the token was namespaced.
return $ptr > $this->firstNamespaceLocations[$fileName];
}
/**
* @param File $phpcsFile
* @param int $stackPtr The current token index.
* @return int|void
*/
public function process( File $phpcsFile, $stackPtr ) {
// If there are no prefixes specified, we have nothing to do for this file
if ( $this->allowedPrefixes === [] ) {
// @codeCoverageIgnoreStart
return $phpcsFile->numTokens;
// @codeCoverageIgnoreEnd
}
$tokens = $phpcsFile->getTokens();
// Check if function is global
if ( $tokens[$stackPtr]['level'] !== 0 ) {
return;
}
$name = $phpcsFile->getDeclarationName( $stackPtr );
if ( $name === null || in_array( $name, $this->ignoreList ) ) {
return;
}
foreach ( $this->allowedPrefixes as $allowedPrefix ) {
if ( str_starts_with( $name, $allowedPrefix ) ) {
return;
}
}
if ( $this->tokenIsNamespaced( $phpcsFile, $stackPtr ) ) {
return;
}
// From ValidGlobalNameSniff
if ( count( $this->allowedPrefixes ) === 1 ) {
// Build message telling you the allowed prefix
$allowedPrefix = '\'' . $this->allowedPrefixes[0] . '\'';
// Forge a valid global function name
$expected = $this->allowedPrefixes[0] . ucfirst( $name ) . "()";
} else {
// Build message telling you which prefixes are allowed
$allowedPrefix = 'one of \''
. implode( '\', \'', $this->allowedPrefixes )
. '\'';
// Build a list of forged valid global function names
$expected = 'one of "'
. implode( ucfirst( $name ) . '()", "', $this->allowedPrefixes )
. ucfirst( $name )
. '()"';
}
$phpcsFile->addError(
'Global function "%s()" is lacking a valid prefix (%s). It should be %s.',
$stackPtr,
'allowedPrefix',
[ $name, $allowedPrefix, $expected ]
);
}
}

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Sat, May 16, 22:32 (2 h, 5 m)
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PrefixedGlobalFunctionsSniff.php (3 KB)

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