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<?php
/**
* This file is part of PDepend.
*
* PHP Version 5
*
* Copyright (c) 2008-2017 Manuel Pichler <[email protected]>.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* * Neither the name of Manuel Pichler nor the names of his
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* @copyright 2008-2017 Manuel Pichler. All rights reserved.
* @license http://www.opensource.org/licenses/bsd-license.php BSD License
*
* @since 1.0.0
*/
namespace PDepend\Source\AST;
use InvalidArgumentException;
use OutOfBoundsException;
use PDepend\Source\AST\ASTTraitUseStatement;
use PDepend\Source\Builder\BuilderContext;
use PDepend\Source\Tokenizer\Token;
use PDepend\Util\Cache\CacheDriver;
/**
* Represents any valid complex php type.
*
* @copyright 2008-2017 Manuel Pichler. All rights reserved.
* @license http://www.opensource.org/licenses/bsd-license.php BSD License
*
* @since 1.0.0
*/
abstract class AbstractASTType extends AbstractASTArtifact
{
/**
* The internal used cache instance.
*
* @var CacheDriver|null
*/
protected $cache = null;
/**
* The currently used builder context.
*
* @var BuilderContext|null
*/
protected $context = null;
/**
* The parent namespace for this class.
*
* @var ASTNamespace|null
*/
private $namespace = null;
/**
* An <b>array</b> with all constants defined in this class or interface.
*
* @var array<string, mixed>|null
*/
protected $constants = null;
/**
* This property will indicate that the class or interface is user defined.
* The parser marks all classes and interfaces as user defined that have a
* source file and were part of parsing process.
*
* @var bool
*/
protected $userDefined = false;
/**
* List of all parsed child nodes.
*
* @var ASTNode[]
*/
protected $nodes = array();
/**
* Name of the parent namespace for this class or interface instance. Or
* <b>NULL</b> when no namespace was specified.
*
* @var string|null
*/
protected $namespaceName = null;
/**
* The modifiers for this class instance.
*
* @var int
*/
protected $modifiers = 0;
/**
* Temporary property that only holds methods during the parsing process.
*
* @var ASTMethod[]|null
*
* @since 1.0.2
*/
protected $methods = array();
/**
* Setter method for the currently used token cache, where this class or
* interface instance can store the associated tokens.
*
* @return $this
*/
public function setCache(CacheDriver $cache)
{
$this->cache = $cache;
return $this;
}
/**
* Sets the currently active builder context.
*
* @return $this
*/
public function setContext(BuilderContext $context)
{
$this->context = $context;
return $this;
}
/**
* Adds a parsed child node to this node.
*
* @return void
* @access private
*/
public function addChild(ASTNode $node)
{
$this->nodes[] = $node;
}
/**
* Returns the child at the given index.
*
* @param int $index
*
* @throws OutOfBoundsException
*
* @return ASTNode
*/
public function getChild($index)
{
if (isset($this->nodes[$index])) {
return $this->nodes[$index];
}
throw new OutOfBoundsException(
sprintf(
'No node found at index %d in node of type: %s',
$index,
get_class($this)
)
);
}
/**
* Returns all child nodes of this class.
*
* @return ASTNode[]
*/
public function getChildren()
{
return $this->nodes;
}
/**
* This method will search recursive for the first child node that is an
* instance of the given <b>$targetType</b>. The returned value will be
* <b>null</b> if no child exists for that.
*
* @template T of ASTNode
*
* @param class-string<T> $targetType Searched class or interface type.
*
* @return T|null
* @access private
*
* @todo Refactor $_methods property to getAllMethods() when it exists.
*/
public function getFirstChildOfType($targetType)
{
foreach ($this->nodes as $node) {
if ($node instanceof $targetType) {
return $node;
}
if (($child = $node->getFirstChildOfType($targetType)) !== null) {
return $child;
}
}
$methods = $this->getMethods();
foreach ($methods as $method) {
if (($child = $method->getFirstChildOfType($targetType)) !== null) {
return $child;
}
}
return null;
}
/**
* Will find all children for the given type.
*
* @template T of ASTNode
* @template R of T
*
* @param class-string<T> $targetType The target class or interface type.
* @param R[] $results The found children.
*
* @return T[]
* @access private
*
* @todo Refactor $_methods property to getAllMethods() when it exists.
*/
public function findChildrenOfType($targetType, array &$results = array())
{
foreach ($this->nodes as $node) {
if ($node instanceof $targetType) {
$results[] = $node;
}
$node->findChildrenOfType($targetType, $results);
}
foreach ($this->getMethods() as $method) {
$method->findChildrenOfType($targetType, $results);
}
return $results;
}
/**
* This method will return <b>true</b> when this type has a declaration in
* the analyzed source files.
*
* @return bool
*/
public function isUserDefined()
{
return $this->userDefined;
}
/**
* This method can be used to mark a type as user defined. User defined
* means that the type has a valid declaration in the analyzed source files.
*
* @return void
*/
public function setUserDefined()
{
$this->userDefined = true;
}
/**
* Returns all {@link ASTMethod} objects in this type.
*
* @return ASTArtifactList<ASTMethod>
*/
public function getMethods()
{
if (is_array($this->methods)) {
return new ASTArtifactList($this->methods);
}
/** @var ASTMethod[] */
$methods = (array) $this->cache
->type('methods')
->restore($this->getId());
if ($this instanceof AbstractASTClassOrInterface) {
foreach ($methods as $method) {
$method->compilationUnit = $this->compilationUnit;
$method->setParent($this);
}
}
return new ASTArtifactList($methods);
}
/**
* Adds the given method to this type.
*
* @return ASTMethod
*/
public function addMethod(ASTMethod $method)
{
if ($this instanceof AbstractASTClassOrInterface) {
$method->setParent($this);
}
$this->methods[] = $method;
return $method;
}
/**
* Returns an array with {@link ASTMethod} objects
* that are imported through traits.
*
* @return ASTMethod[]
*
* @since 1.0.0
*/
protected function getTraitMethods()
{
$methods = array();
/** @var ASTTraitUseStatement[] */
$uses = $this->findChildrenOfType(
'PDepend\\Source\\AST\\ASTTraitUseStatement'
);
foreach ($uses as $use) {
$priorMethods = array();
$precedences = $use->findChildrenOfType('PDepend\\Source\\AST\\ASTTraitAdaptationPrecedence');
foreach ($precedences as $precedence) {
$priorMethods[strtolower($precedence->getImage())] = true;
}
foreach ($use->getAllMethods() as $method) {
foreach ($uses as $use2) {
if ($use2->hasExcludeFor($method)) {
continue 2;
}
}
$name = strtolower($method->getName());
if (!isset($methods[$name]) || isset($priorMethods[$name])) {
$methods[$name] = $method;
continue;
}
if ($methods[$name]->isAbstract()) {
$methods[$name] = $method;
continue;
}
if ($method->isAbstract()) {
continue;
}
throw new ASTTraitMethodCollisionException($method, $this);
}
}
return $methods;
}
/**
* Returns an <b>array</b> with all tokens within this type.
*
* @return Token[]
*/
public function getTokens()
{
return (array) $this->cache
->type('tokens')
->restore($this->getId());
}
/**
* Sets the tokens for this type.
*
* @param Token[] $tokens
*
* @return void
*/
public function setTokens(array $tokens, Token $startToken = null)
{
if ($tokens === array()) {
throw new InvalidArgumentException('An AST node should contain at least one token');
}
if (!$startToken) {
$startToken = reset($tokens);
}
$this->startLine = $startToken->startLine;
$this->endLine = end($tokens)->endLine;
$this->cache
->type('tokens')
->store($this->getId(), $tokens);
}
/**
* @return string
*/
public function getNamespacedName()
{
if (null === $this->namespace || $this->namespace->isPackageAnnotation()) {
return $this->name;
}
return sprintf('%s\\%s', $this->namespaceName, $this->name);
}
/**
* Returns the name of the parent namespace.
*
* @return string
*/
public function getNamespaceName()
{
return $this->namespaceName;
}
/**
* Returns the parent namespace for this class.
*
* @return ASTNamespace
*/
public function getNamespace()
{
return $this->namespace;
}
/**
* Sets the parent namespace for this type.
*
* @return void
*/
public function setNamespace(ASTNamespace $namespace)
{
$this->namespace = $namespace;
$this->namespaceName = $namespace->getName();
}
/**
* Resets the associated namespace reference.
*
* @return void
*/
public function unsetNamespace()
{
$this->namespace = null;
$this->namespaceName = null;
}
/**
* This method will return <b>true</b> when this class or interface instance
* was restored from the cache and not currently parsed. Otherwise this
* method will return <b>false</b>.
*
* @return bool
*/
public function isCached()
{
return $this->compilationUnit->isCached();
}
/**
* Returns a list of all methods provided by this type or one of its parents.
*
* @return ASTMethod[]
*/
abstract public function getAllMethods();
/**
* Checks that this user type is a subtype of the given <b>$type</b>
* instance.
*
* @return bool
*
* @since 1.0.6
*/
abstract public function isSubtypeOf(AbstractASTType $type);
/**
* The magic sleep method is called by the PHP runtime environment before an
* instance of this class gets serialized. It returns an array with the
* names of all those properties that should be cached for this class or
* interface instance.
*
* @return array
*/
public function __sleep()
{
if (is_array($this->methods)) {
$this->cache
->type('methods')
->store($this->getId(), $this->methods);
$this->methods = null;
}
return array(
'cache',
'context',
'comment',
'endLine',
'modifiers',
'name',
'nodes',
'namespaceName',
'startLine',
'userDefined',
'id'
);
}
/**
* The magic wakeup method is called by the PHP runtime environment when a
* serialized instance of this class gets unserialized and all properties
* are restored. This implementation of the <b>__wakeup()</b> method sets
* a flag that this object was restored from the cache and it restores the
* dependency between this class or interface and it's child methods.
*
* @return void
*/
public function __wakeup()
{
$this->methods = null;
}
}