/
CanAlias.php
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/
CanAlias.php
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<?php
namespace Psalm\Internal\Analyzer;
use PhpParser;
use Psalm\Aliases;
use Psalm\CodeLocation;
use Psalm\FileManipulation;
use Psalm\Internal\FileManipulation\FileManipulationBuffer;
use function implode;
use function strtolower;
trait CanAlias
{
/**
* @var array<lowercase-string, string>
*/
private $aliased_classes = [];
/**
* @var array<lowercase-string, CodeLocation>
*/
private $aliased_class_locations = [];
/**
* @var array<lowercase-string, string>
*/
private $aliased_classes_flipped = [];
/**
* @var array<lowercase-string, string>
*/
private $aliased_classes_flipped_replaceable = [];
/**
* @var array<lowercase-string, non-empty-string>
*/
private $aliased_functions = [];
/**
* @var array<string, string>
*/
private $aliased_constants = [];
public function visitUse(PhpParser\Node\Stmt\Use_ $stmt): void
{
$codebase = $this->getCodebase();
foreach ($stmt->uses as $use) {
$use_path = implode('\\', $use->name->parts);
$use_path_lc = strtolower($use_path);
$use_alias = $use->alias->name ?? $use->name->getLast();
$use_alias_lc = strtolower($use_alias);
switch ($use->type !== PhpParser\Node\Stmt\Use_::TYPE_UNKNOWN ? $use->type : $stmt->type) {
case PhpParser\Node\Stmt\Use_::TYPE_FUNCTION:
$this->aliased_functions[$use_alias_lc] = $use_path;
break;
case PhpParser\Node\Stmt\Use_::TYPE_CONSTANT:
$this->aliased_constants[$use_alias] = $use_path;
break;
case PhpParser\Node\Stmt\Use_::TYPE_NORMAL:
$codebase->analyzer->addOffsetReference(
$this->getFilePath(),
(int) $use->getAttribute('startFilePos'),
(int) $use->getAttribute('endFilePos'),
$use_path
);
if ($codebase->collect_locations) {
// register the path
$codebase->use_referencing_locations[$use_path_lc][] =
new CodeLocation($this, $use);
}
if ($codebase->alter_code) {
if (isset($codebase->class_transforms[$use_path_lc])) {
$new_fq_class_name = $codebase->class_transforms[$use_path_lc];
$file_manipulations = [];
$file_manipulations[] = new FileManipulation(
(int) $use->getAttribute('startFilePos'),
(int) $use->getAttribute('endFilePos') + 1,
$new_fq_class_name . ($use->alias ? ' as ' . $use_alias : '')
);
FileManipulationBuffer::add($this->getFilePath(), $file_manipulations);
}
$this->aliased_classes_flipped_replaceable[$use_path_lc] = $use_alias;
}
$this->aliased_classes[$use_alias_lc] = $use_path;
$this->aliased_class_locations[$use_alias_lc] = new CodeLocation($this, $stmt);
$this->aliased_classes_flipped[$use_path_lc] = $use_alias;
break;
}
}
}
public function visitGroupUse(PhpParser\Node\Stmt\GroupUse $stmt): void
{
$use_prefix = implode('\\', $stmt->prefix->parts);
$codebase = $this->getCodebase();
foreach ($stmt->uses as $use) {
$use_path = $use_prefix . '\\' . implode('\\', $use->name->parts);
$use_alias = $use->alias->name ?? $use->name->getLast();
switch ($use->type !== PhpParser\Node\Stmt\Use_::TYPE_UNKNOWN ? $use->type : $stmt->type) {
case PhpParser\Node\Stmt\Use_::TYPE_FUNCTION:
$this->aliased_functions[strtolower($use_alias)] = $use_path;
break;
case PhpParser\Node\Stmt\Use_::TYPE_CONSTANT:
$this->aliased_constants[$use_alias] = $use_path;
break;
case PhpParser\Node\Stmt\Use_::TYPE_NORMAL:
if ($codebase->collect_locations) {
// register the path
$codebase->use_referencing_locations[strtolower($use_path)][] =
new CodeLocation($this, $use);
}
$this->aliased_classes[strtolower($use_alias)] = $use_path;
$this->aliased_classes_flipped[strtolower($use_path)] = $use_alias;
break;
}
}
}
/**
* @return array<lowercase-string, string>
*/
public function getAliasedClassesFlipped(): array
{
return $this->aliased_classes_flipped;
}
/**
* @return array<string, string>
*/
public function getAliasedClassesFlippedReplaceable(): array
{
return $this->aliased_classes_flipped_replaceable;
}
public function getAliases(): Aliases
{
return new Aliases(
$this->getNamespace(),
$this->aliased_classes,
$this->aliased_functions,
$this->aliased_constants
);
}
}