X-Git-Url: http://www.aleph1.co.uk/gitweb/?p=yaffs-website;a=blobdiff_plain;f=vendor%2Fpsy%2Fpsysh%2Fsrc%2FPsy%2FCodeCleaner%2FValidClassNamePass.php;fp=vendor%2Fpsy%2Fpsysh%2Fsrc%2FPsy%2FCodeCleaner%2FValidClassNamePass.php;h=0000000000000000000000000000000000000000;hp=c91471efcc6b4054d641ca89576da3bf4bafecd2;hb=af6d1fb995500ae68849458ee10d66abbdcfb252;hpb=680c79a86e3ed402f263faeac92e89fb6d9edcc0

diff --git a/vendor/psy/psysh/src/Psy/CodeCleaner/ValidClassNamePass.php b/vendor/psy/psysh/src/Psy/CodeCleaner/ValidClassNamePass.php
deleted file mode 100644
index c91471efc..000000000
--- a/vendor/psy/psysh/src/Psy/CodeCleaner/ValidClassNamePass.php
+++ /dev/null
@@ -1,393 +0,0 @@
-<?php
-
-/*
- * This file is part of Psy Shell.
- *
- * (c) 2012-2017 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\Expr;
-use PhpParser\Node\Expr\ClassConstFetch;
-use PhpParser\Node\Expr\New_;
-use PhpParser\Node\Expr\StaticCall;
-use PhpParser\Node\Stmt;
-use PhpParser\Node\Stmt\Class_;
-use PhpParser\Node\Stmt\Do_;
-use PhpParser\Node\Stmt\If_;
-use PhpParser\Node\Stmt\Interface_;
-use PhpParser\Node\Stmt\Switch_;
-use PhpParser\Node\Stmt\Trait_;
-use PhpParser\Node\Stmt\While_;
-use Psy\Exception\FatalErrorException;
-
-/**
- * Validate that classes exist.
- *
- * This pass throws a FatalErrorException rather than letting PHP run
- * headfirst into a real fatal error and die.
- */
-class ValidClassNamePass extends NamespaceAwarePass
-{
-    const CLASS_TYPE     = 'class';
-    const INTERFACE_TYPE = 'interface';
-    const TRAIT_TYPE     = 'trait';
-
-    protected $checkTraits;
-    private $conditionalScopes = 0;
-
-    public function __construct()
-    {
-        $this->checkTraits = function_exists('trait_exists');
-    }
-
-    /**
-     * Validate class, interface and trait definitions.
-     *
-     * Validate them upon entering the node, so that we know about their
-     * presence and can validate constant fetches and static calls in class or
-     * trait methods.
-     *
-     * @param Node
-     */
-    public function enterNode(Node $node)
-    {
-        parent::enterNode($node);
-
-        if (self::isConditional($node)) {
-            $this->conditionalScopes++;
-        } else {
-            // @todo add an "else" here which adds a runtime check for instances where we can't tell
-            // whether a class is being redefined by static analysis alone.
-            if ($this->conditionalScopes === 0) {
-                if ($node instanceof Class_) {
-                    $this->validateClassStatement($node);
-                } elseif ($node instanceof Interface_) {
-                    $this->validateInterfaceStatement($node);
-                } elseif ($node instanceof Trait_) {
-                    $this->validateTraitStatement($node);
-                }
-            }
-        }
-    }
-
-    /**
-     * Validate `new` expressions, class constant fetches, and static calls.
-     *
-     * @throws FatalErrorException if a class, interface or trait is referenced which does not exist
-     * @throws FatalErrorException if a class extends something that is not a class
-     * @throws FatalErrorException if a class implements something that is not an interface
-     * @throws FatalErrorException if an interface extends something that is not an interface
-     * @throws FatalErrorException if a class, interface or trait redefines an existing class, interface or trait name
-     *
-     * @param Node $node
-     */
-    public function leaveNode(Node $node)
-    {
-        if (self::isConditional($node)) {
-            $this->conditionalScopes--;
-        } elseif ($node instanceof New_) {
-            $this->validateNewExpression($node);
-        } elseif ($node instanceof ClassConstFetch) {
-            $this->validateClassConstFetchExpression($node);
-        } elseif ($node instanceof StaticCall) {
-            $this->validateStaticCallExpression($node);
-        }
-    }
-
-    private static function isConditional(Node $node)
-    {
-        return $node instanceof If_ ||
-            $node instanceof While_ ||
-            $node instanceof Do_ ||
-            $node instanceof Switch_;
-    }
-
-    /**
-     * Validate a class definition statement.
-     *
-     * @param Class_ $stmt
-     */
-    protected function validateClassStatement(Class_ $stmt)
-    {
-        $this->ensureCanDefine($stmt);
-        if (isset($stmt->extends)) {
-            $this->ensureClassExists($this->getFullyQualifiedName($stmt->extends), $stmt);
-        }
-        $this->ensureInterfacesExist($stmt->implements, $stmt);
-    }
-
-    /**
-     * Validate an interface definition statement.
-     *
-     * @param Interface_ $stmt
-     */
-    protected function validateInterfaceStatement(Interface_ $stmt)
-    {
-        $this->ensureCanDefine($stmt);
-        $this->ensureInterfacesExist($stmt->extends, $stmt);
-    }
-
-    /**
-     * Validate a trait definition statement.
-     *
-     * @param Trait_ $stmt
-     */
-    protected function validateTraitStatement(Trait_ $stmt)
-    {
-        $this->ensureCanDefine($stmt);
-    }
-
-    /**
-     * Validate a `new` expression.
-     *
-     * @param New_ $stmt
-     */
-    protected function validateNewExpression(New_ $stmt)
-    {
-        // if class name is an expression or an anonymous class, give it a pass for now
-        if (!$stmt->class instanceof Expr && !$stmt->class instanceof Class_) {
-            $this->ensureClassExists($this->getFullyQualifiedName($stmt->class), $stmt);
-        }
-    }
-
-    /**
-     * Validate a class constant fetch expression's class.
-     *
-     * @param ClassConstFetch $stmt
-     */
-    protected function validateClassConstFetchExpression(ClassConstFetch $stmt)
-    {
-        // there is no need to check exists for ::class const for php 5.5 or newer
-        if (strtolower($stmt->name) === 'class'
-            && version_compare(PHP_VERSION, '5.5', '>=')) {
-            return;
-        }
-
-        // if class name is an expression, give it a pass for now
-        if (!$stmt->class instanceof Expr) {
-            $this->ensureClassOrInterfaceExists($this->getFullyQualifiedName($stmt->class), $stmt);
-        }
-    }
-
-    /**
-     * Validate a class constant fetch expression's class.
-     *
-     * @param StaticCall $stmt
-     */
-    protected function validateStaticCallExpression(StaticCall $stmt)
-    {
-        // if class name is an expression, give it a pass for now
-        if (!$stmt->class instanceof Expr) {
-            $this->ensureMethodExists($this->getFullyQualifiedName($stmt->class), $stmt->name, $stmt);
-        }
-    }
-
-    /**
-     * Ensure that no class, interface or trait name collides with a new definition.
-     *
-     * @throws FatalErrorException
-     *
-     * @param Stmt $stmt
-     */
-    protected function ensureCanDefine(Stmt $stmt)
-    {
-        $name = $this->getFullyQualifiedName($stmt->name);
-
-        // check for name collisions
-        $errorType = null;
-        if ($this->classExists($name)) {
-            $errorType = self::CLASS_TYPE;
-        } elseif ($this->interfaceExists($name)) {
-            $errorType = self::INTERFACE_TYPE;
-        } elseif ($this->traitExists($name)) {
-            $errorType = self::TRAIT_TYPE;
-        }
-
-        if ($errorType !== null) {
-            throw $this->createError(sprintf('%s named %s already exists', ucfirst($errorType), $name), $stmt);
-        }
-
-        // Store creation for the rest of this code snippet so we can find local
-        // issue too
-        $this->currentScope[strtolower($name)] = $this->getScopeType($stmt);
-    }
-
-    /**
-     * Ensure that a referenced class exists.
-     *
-     * @throws FatalErrorException
-     *
-     * @param string $name
-     * @param Stmt   $stmt
-     */
-    protected function ensureClassExists($name, $stmt)
-    {
-        if (!$this->classExists($name)) {
-            throw $this->createError(sprintf('Class \'%s\' not found', $name), $stmt);
-        }
-    }
-
-    /**
-     * Ensure that a referenced class _or interface_ exists.
-     *
-     * @throws FatalErrorException
-     *
-     * @param string $name
-     * @param Stmt   $stmt
-     */
-    protected function ensureClassOrInterfaceExists($name, $stmt)
-    {
-        if (!$this->classExists($name) && !$this->interfaceExists($name)) {
-            throw $this->createError(sprintf('Class \'%s\' not found', $name), $stmt);
-        }
-    }
-
-    /**
-     * Ensure that a statically called method exists.
-     *
-     * @throws FatalErrorException
-     *
-     * @param string $class
-     * @param string $name
-     * @param Stmt   $stmt
-     */
-    protected function ensureMethodExists($class, $name, $stmt)
-    {
-        $this->ensureClassExists($class, $stmt);
-
-        // let's pretend all calls to self, parent and static are valid
-        if (in_array(strtolower($class), array('self', 'parent', 'static'))) {
-            return;
-        }
-
-        // ... and all calls to classes defined right now
-        if ($this->findInScope($class) === self::CLASS_TYPE) {
-            return;
-        }
-
-        // if method name is an expression, give it a pass for now
-        if ($name instanceof Expr) {
-            return;
-        }
-
-        if (!method_exists($class, $name) && !method_exists($class, '__callStatic')) {
-            throw $this->createError(sprintf('Call to undefined method %s::%s()', $class, $name), $stmt);
-        }
-    }
-
-    /**
-     * Ensure that a referenced interface exists.
-     *
-     * @throws FatalErrorException
-     *
-     * @param $interfaces
-     * @param Stmt $stmt
-     */
-    protected function ensureInterfacesExist($interfaces, $stmt)
-    {
-        foreach ($interfaces as $interface) {
-            /** @var string $name */
-            $name = $this->getFullyQualifiedName($interface);
-            if (!$this->interfaceExists($name)) {
-                throw $this->createError(sprintf('Interface \'%s\' not found', $name), $stmt);
-            }
-        }
-    }
-
-    /**
-     * Get a symbol type key for storing in the scope name cache.
-     *
-     * @param Stmt $stmt
-     *
-     * @return string
-     */
-    protected function getScopeType(Stmt $stmt)
-    {
-        if ($stmt instanceof Class_) {
-            return self::CLASS_TYPE;
-        } elseif ($stmt instanceof Interface_) {
-            return self::INTERFACE_TYPE;
-        } elseif ($stmt instanceof Trait_) {
-            return self::TRAIT_TYPE;
-        }
-    }
-
-    /**
-     * Check whether a class exists, or has been defined in the current code snippet.
-     *
-     * Gives `self`, `static` and `parent` a free pass.
-     *
-     * @param string $name
-     *
-     * @return bool
-     */
-    protected function classExists($name)
-    {
-        // Give `self`, `static` and `parent` a pass. This will actually let
-        // some errors through, since we're not checking whether the keyword is
-        // being used in a class scope.
-        if (in_array(strtolower($name), array('self', 'static', 'parent'))) {
-            return true;
-        }
-
-        return class_exists($name) || $this->findInScope($name) === self::CLASS_TYPE;
-    }
-
-    /**
-     * Check whether an interface exists, or has been defined in the current code snippet.
-     *
-     * @param string $name
-     *
-     * @return bool
-     */
-    protected function interfaceExists($name)
-    {
-        return interface_exists($name) || $this->findInScope($name) === self::INTERFACE_TYPE;
-    }
-
-    /**
-     * Check whether a trait exists, or has been defined in the current code snippet.
-     *
-     * @param string $name
-     *
-     * @return bool
-     */
-    protected function traitExists($name)
-    {
-        return $this->checkTraits && (trait_exists($name) || $this->findInScope($name) === self::TRAIT_TYPE);
-    }
-
-    /**
-     * Find a symbol in the current code snippet scope.
-     *
-     * @param string $name
-     *
-     * @return string|null
-     */
-    protected function findInScope($name)
-    {
-        $name = strtolower($name);
-        if (isset($this->currentScope[$name])) {
-            return $this->currentScope[$name];
-        }
-    }
-
-    /**
-     * Error creation factory.
-     *
-     * @param string $msg
-     * @param Stmt   $stmt
-     *
-     * @return FatalErrorException
-     */
-    protected function createError($msg, $stmt)
-    {
-        return new FatalErrorException($msg, 0, E_ERROR, null, $stmt->getLine());
-    }
-}