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AbstractClassPass.php (2.14 KB)

AssignThisVariablePass.php (1.01 KB)

CallTimePassByReferencePass.php (1.36 KB)

CodeCleanerPass.php (415 B)

ExitPass.php (748 B)

FinalClassPass.php (1.62 KB)

FunctionContextPass.php (1.31 KB)

FunctionReturnInWriteContextPass.php (2.97 KB)

ImplicitReturnPass.php (4.14 KB)

InstanceOfPass.php (1.3 KB)

LeavePsyshAlonePass.php (913 B)

LegacyEmptyPass.php (1.68 KB)

ListPass.php (3.21 KB)

LoopContextPass.php (3.39 KB)

MagicConstantsPass.php (1.04 KB)

NamespaceAwarePass.php (1.81 KB)

NamespacePass.php (2.36 KB)

NoReturnValue.php (889 B)

PassableByReferencePass.php (3.76 KB)

RequirePass.php (3 KB)

StrictTypesPass.php (2.65 KB)

UseStatementPass.php (4.08 KB)

ValidClassNamePass.php (12.08 KB)

ValidConstantPass.php (3.13 KB)

ValidConstructorPass.php (3.79 KB)

ValidFunctionNamePass.php (3.16 KB)

Edit: UseStatementPass.php

<?php

/*
 * This file is part of Psy Shell.
 *
 * (c) 2012-2018 Justin Hileman
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Psy\CodeCleaner;

use PhpParser\Node;
use PhpParser\Node\Name;
use PhpParser\Node\Name\FullyQualified as FullyQualifiedName;
use PhpParser\Node\Stmt\GroupUse;
use PhpParser\Node\Stmt\Namespace_;
use PhpParser\Node\Stmt\Use_;
use PhpParser\NodeTraverser;

/**
 * Provide implicit use statements for subsequent execution.
 *
 * The use statement pass remembers the last use statement line encountered:
 *
 *     use Foo\Bar as Baz;
 *
 * ... which it then applies implicitly to all future evaluated code, until the
 * current namespace is replaced by another namespace.
 */
class UseStatementPass extends CodeCleanerPass
{
    private $aliases       = [];
    private $lastAliases   = [];
    private $lastNamespace = null;

/**
     * Re-load the last set of use statements on re-entering a namespace.
     *
     * This isn't how namespaces normally work, but because PsySH has to spin
     * up a new namespace for every line of code, we do this to make things
     * work like you'd expect.
     *
     * @param Node $node
     */
    public function enterNode(Node $node)
    {
        if ($node instanceof Namespace_) {
            // If this is the same namespace as last namespace, let's do ourselves
            // a favor and reload all the aliases...
            if (\strtolower($node->name) === \strtolower($this->lastNamespace)) {
                $this->aliases = $this->lastAliases;
            }
        }
    }

/**
     * If this statement is a namespace, forget all the aliases we had.
     *
     * If it's a use statement, remember the alias for later. Otherwise, apply
     * remembered aliases to the code.
     *
     * @param Node $node
     */
    public function leaveNode(Node $node)
    {
        if ($node instanceof Use_) {
            // Store a reference to every "use" statement, because we'll need
            // them in a bit.
            foreach ($node->uses as $use) {
                $alias = $use->alias ?: \end($use->name->parts);
                $this->aliases[\strtolower($alias)] = $use->name;
            }

return NodeTraverser::REMOVE_NODE;
        } elseif ($node instanceof GroupUse) {
            // Expand every "use" statement in the group into a full, standalone
            // "use" and store 'em with the others.
            foreach ($node->uses as $use) {
                $alias = $use->alias ?: \end($use->name->parts);
                $this->aliases[\strtolower($alias)] = Name::concat($node->prefix, $use->name, [
                    'startLine' => $node->prefix->getAttribute('startLine'),
                    'endLine'   => $use->name->getAttribute('endLine'),
                ]);
            }

return NodeTraverser::REMOVE_NODE;
        } elseif ($node instanceof Namespace_) {
            // Start fresh, since we're done with this namespace.
            $this->lastNamespace = $node->name;
            $this->lastAliases   = $this->aliases;
            $this->aliases       = [];
        } else {
            foreach ($node as $name => $subNode) {
                if ($subNode instanceof Name) {
                    // Implicitly thunk all aliases.
                    if ($replacement = $this->findAlias($subNode)) {
                        $node->$name = $replacement;
                    }
                }
            }

return $node;
        }
    }

/**
     * Find class/namespace aliases.
     *
     * @param Name $name
     *
     * @return FullyQualifiedName|null
     */
    private function findAlias(Name $name)
    {
        $that = \strtolower($name);
        foreach ($this->aliases as $alias => $prefix) {
            if ($that === $alias) {
                return new FullyQualifiedName($prefix->toString());
            } elseif (\substr($that, 0, \strlen($alias) + 1) === $alias . '\\') {
                return new FullyQualifiedName($prefix->toString() . \substr($name, \strlen($alias)));
            }
        }
    }
}