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<?php
/*
* This file is part of PHP CS Fixer.
*
* (c) Fabien Potencier <fabien@symfony.com>
* Dariusz Rumiński <dariusz.ruminski@gmail.com>
*
* This source file is subject to the MIT license that is bundled
* with this source code in the file LICENSE.
*/
namespace PhpCsFixer\Tokenizer\Resolver;
use PhpCsFixer\Preg;
use PhpCsFixer\Tokenizer\Analyzer\Analysis\NamespaceAnalysis;
use PhpCsFixer\Tokenizer\Analyzer\NamespacesAnalyzer;
use PhpCsFixer\Tokenizer\Analyzer\NamespaceUsesAnalyzer;
use PhpCsFixer\Tokenizer\Tokens;
/**
* @internal
*/
final class TypeShortNameResolver
{
/**
* This method will resolve the shortName of a FQCN if possible or otherwise return the inserted type name.
* E.g.: use Foo\Bar => "Bar".
*
* @param Tokens $tokens
* @param string $typeName
*
* @return string
*/
public function resolve(Tokens $tokens, $typeName)
{
// First match explicit imports:
$useMap = $this->getUseMapFromTokens($tokens);
foreach ($useMap as $shortName => $fullName) {
$regex = '/^\\\\?'.preg_quote($fullName, '/').'$/';
if (Preg::match($regex, $typeName)) {
return $shortName;
}
}
// Next try to match (partial) classes inside the same namespace
// For now only support one namespace per file:
$namespaces = $this->getNamespacesFromTokens($tokens);
if (1 === \count($namespaces)) {
foreach ($namespaces as $fullName) {
$matches = [];
$regex = '/^\\\\?'.preg_quote($fullName, '/').'\\\\(?P<className>.+)$/';
if (Preg::match($regex, $typeName, $matches)) {
return $matches['className'];
}
}
}
// Next: Try to match partial use statements:
foreach ($useMap as $shortName => $fullName) {
$matches = [];
$regex = '/^\\\\?'.preg_quote($fullName, '/').'\\\\(?P<className>.+)$/';
if (Preg::match($regex, $typeName, $matches)) {
return $shortName.'\\'.$matches['className'];
}
}
return $typeName;
}
/**
* @param Tokens $tokens
*
* @return array<string, string> A list of all FQN namespaces in the file with the short name as key
*/
private function getNamespacesFromTokens(Tokens $tokens)
{
return array_map(function (NamespaceAnalysis $info) {
return $info->getFullName();
}, (new NamespacesAnalyzer())->getDeclarations($tokens));
}
/**
* @param Tokens $tokens
*
* @return array<string, string> A list of all FQN use statements in the file with the short name as key
*/
private function getUseMapFromTokens(Tokens $tokens)
{
$map = [];
foreach ((new NamespaceUsesAnalyzer())->getDeclarationsFromTokens($tokens) as $useDeclaration) {
$map[$useDeclaration->getShortName()] = $useDeclaration->getFullName();
}
return $map;
}
}