forked from PHP-CS-Fixer/PHP-CS-Fixer
/
GroupImportFixer.php
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/
GroupImportFixer.php
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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\Fixer\Import;
use PhpCsFixer\AbstractFixer;
use PhpCsFixer\FixerDefinition\FixerDefinition;
use PhpCsFixer\FixerDefinition\VersionSpecification;
use PhpCsFixer\FixerDefinition\VersionSpecificCodeSample;
use PhpCsFixer\Tokenizer\Analyzer\Analysis\NamespaceUseAnalysis;
use PhpCsFixer\Tokenizer\Analyzer\NamespaceUsesAnalyzer;
use PhpCsFixer\Tokenizer\CT;
use PhpCsFixer\Tokenizer\Token;
use PhpCsFixer\Tokenizer\Tokens;
/**
* @author Volodymyr Kupriienko <vldmr.kuprienko@gmail.com>
*/
final class GroupImportFixer extends AbstractFixer
{
/**
* {@inheritdoc}
*/
public function getDefinition()
{
return new FixerDefinition(
'There MUST be group use for the same namespaces.',
[
new VersionSpecificCodeSample(
"<?php\nuse Foo\\Bar;\nuse Foo\\Baz;\n",
new VersionSpecification(70000)
),
]
);
}
/**
* {@inheritdoc}
*/
public function isCandidate(Tokens $tokens)
{
return \PHP_VERSION_ID >= 70000 && $tokens->isTokenKindFound(T_USE);
}
/**
* {@inheritdoc}
*/
protected function applyFix(\SplFileInfo $file, Tokens $tokens)
{
$useWithSameNamespaces = $this->getSameNamespaces($tokens);
if ([] === $useWithSameNamespaces) {
return;
}
$this->removeSingleUseStatements($useWithSameNamespaces, $tokens);
$this->addGroupUseStatements($useWithSameNamespaces, $tokens);
}
/**
* Gets namespace use analyzers with same namespaces.
*
* @return NamespaceUseAnalysis[]
*/
private function getSameNamespaces(Tokens $tokens)
{
$useDeclarations = (new NamespaceUsesAnalyzer())->getDeclarationsFromTokens($tokens);
if (0 === \count($useDeclarations)) {
return [];
}
$allNamespaceAndType = array_map(
function (NamespaceUseAnalysis $useDeclaration) {
return $this->getNamespaceNameWithSlash($useDeclaration).$useDeclaration->getType();
},
$useDeclarations
);
$sameNamespaces = array_filter(array_count_values($allNamespaceAndType), function ($count) {
return $count > 1;
});
$sameNamespaces = array_keys($sameNamespaces);
$sameNamespaceAnalysis = array_filter($useDeclarations, function ($useDeclaration) use ($sameNamespaces) {
$namespaceNameAndType = $this->getNamespaceNameWithSlash($useDeclaration).$useDeclaration->getType();
return \in_array($namespaceNameAndType, $sameNamespaces, true);
});
usort($sameNamespaceAnalysis, function (NamespaceUseAnalysis $a, NamespaceUseAnalysis $b) {
$namespaceA = $this->getNamespaceNameWithSlash($a);
$namespaceB = $this->getNamespaceNameWithSlash($b);
return \strlen($namespaceA) - \strlen($namespaceB) ?: strcmp($a->getFullName(), $b->getFullName());
});
return $sameNamespaceAnalysis;
}
/**
* @param NamespaceUseAnalysis[] $statements
*/
private function removeSingleUseStatements(array $statements, Tokens $tokens)
{
foreach ($statements as $useDeclaration) {
$index = $useDeclaration->getStartIndex();
$endIndex = $useDeclaration->getEndIndex();
$useStatementTokens = [T_USE, T_WHITESPACE, T_STRING, T_NS_SEPARATOR, T_AS, CT::T_CONST_IMPORT, CT::T_FUNCTION_IMPORT];
while ($index !== $endIndex) {
if ($tokens[$index]->isGivenKind($useStatementTokens)) {
$tokens->clearAt($index);
}
++$index;
}
if (isset($tokens[$index]) && $tokens[$index]->equals(';')) {
$tokens->clearAt($index);
}
++$index;
if (isset($tokens[$index]) && $tokens[$index]->isGivenKind(T_WHITESPACE)) {
$tokens->clearAt($index);
}
}
}
/**
* @param NamespaceUseAnalysis[] $statements
*/
private function addGroupUseStatements(array $statements, Tokens $tokens)
{
$currentUseDeclaration = null;
$insertIndex = \array_slice($statements, -1)[0]->getEndIndex() + 1;
foreach ($statements as $index => $useDeclaration) {
if ($this->areDeclarationsDifferent($currentUseDeclaration, $useDeclaration)) {
$currentUseDeclaration = $useDeclaration;
$insertIndex += $this->createNewGroup(
$tokens,
$insertIndex,
$useDeclaration,
$this->getNamespaceNameWithSlash($currentUseDeclaration)
);
} else {
$newTokens = [
new Token(','),
new Token([T_WHITESPACE, ' ']),
];
if ($useDeclaration->isAliased()) {
$tokens->insertAt($insertIndex, $newTokens);
$insertIndex += \count($newTokens);
$newTokens = [];
$insertIndex += $this->insertToGroupUseWithAlias($tokens, $insertIndex, $useDeclaration);
}
$newTokens[] = new Token([T_STRING, $useDeclaration->getShortName()]);
if (!isset($statements[$index + 1]) || $this->areDeclarationsDifferent($currentUseDeclaration, $statements[$index + 1])) {
$newTokens[] = new Token([CT::T_GROUP_IMPORT_BRACE_CLOSE, '}']);
$newTokens[] = new Token(';');
$newTokens[] = new Token([T_WHITESPACE, "\n"]);
}
$tokens->insertAt($insertIndex, $newTokens);
$insertIndex += \count($newTokens);
}
}
}
/**
* @return string
*/
private function getNamespaceNameWithSlash(NamespaceUseAnalysis $useDeclaration)
{
$position = strrpos($useDeclaration->getFullName(), '\\');
if (false === $position || 0 === $position) {
return $useDeclaration->getFullName();
}
return substr($useDeclaration->getFullName(), 0, $position + 1);
}
/**
* Insert use with alias to the group.
*
* @param int $insertIndex
*
* @return int
*/
private function insertToGroupUseWithAlias(Tokens $tokens, $insertIndex, NamespaceUseAnalysis $useDeclaration)
{
$newTokens = [
new Token([T_STRING, substr($useDeclaration->getFullName(), strripos($useDeclaration->getFullName(), '\\') + 1)]),
new Token([T_WHITESPACE, ' ']),
new Token([T_AS, 'as']),
new Token([T_WHITESPACE, ' ']),
];
$tokens->insertAt($insertIndex, $newTokens);
return \count($newTokens) + 1;
}
/**
* Creates new use statement group.
*
* @param int $insertIndex
* @param string $currentNamespace
*
* @return int
*/
private function createNewGroup(Tokens $tokens, $insertIndex, NamespaceUseAnalysis $useDeclaration, $currentNamespace)
{
$insertedTokens = 0;
if (\count($tokens) === $insertIndex) {
$tokens->setSize($insertIndex + 1);
}
$newTokens = [
new Token([T_USE, 'use']),
new Token([T_WHITESPACE, ' ']),
];
if ($useDeclaration->isFunction() || $useDeclaration->isConstant()) {
$importStatementParams = $useDeclaration->isFunction()
? [CT::T_FUNCTION_IMPORT, 'function']
: [CT::T_CONST_IMPORT, 'const'];
$newTokens[] = new Token($importStatementParams);
$newTokens[] = new Token([T_WHITESPACE, ' ']);
}
$namespaceParts = array_filter(explode('\\', $currentNamespace));
foreach ($namespaceParts as $part) {
$newTokens[] = new Token([T_STRING, $part]);
$newTokens[] = new Token([T_NS_SEPARATOR, '\\']);
}
$newTokens[] = new Token([CT::T_GROUP_IMPORT_BRACE_OPEN, '{']);
$newTokensCount = \count($newTokens);
$tokens->insertAt($insertIndex, $newTokens);
$insertedTokens += $newTokensCount;
$insertIndex += $newTokensCount;
if ($useDeclaration->isAliased()) {
$inserted = $this->insertToGroupUseWithAlias($tokens, $insertIndex + 1, $useDeclaration);
$insertedTokens += $inserted;
$insertIndex += $inserted;
}
$tokens->insertAt($insertIndex, new Token([T_STRING, $useDeclaration->getShortName()]));
++$insertedTokens;
return $insertedTokens;
}
/**
* Check if namespace use analyses are different.
*
* @param null|NamespaceUseAnalysis $analysis1
* @param null|NamespaceUseAnalysis $analysis2
*
* @return bool
*/
private function areDeclarationsDifferent($analysis1, $analysis2)
{
if (null === $analysis1 || null === $analysis2) {
return true;
}
$namespaceName1 = $this->getNamespaceNameWithSlash($analysis1);
$namespaceName2 = $this->getNamespaceNameWithSlash($analysis2);
return $namespaceName1 !== $namespaceName2 || $analysis1->getType() !== $analysis2->getType();
}
}