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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 PDepend\Source\ASTVisitor\ASTVisitor;
/**
* This node class represents a trait use statement.
*
* @copyright 2008-2017 Manuel Pichler. All rights reserved.
* @license http://www.opensource.org/licenses/bsd-license.php BSD License
*
* @since 1.0.0
*/
class ASTTraitUseStatement extends ASTStatement
{
/**
* @var ASTMethod[]|null
*/
private $allMethods;
/**
* Returns an array with all aliased or directly imported methods.
*
* @return ASTMethod[]
*/
public function getAllMethods()
{
if ($this->allMethods === null) {
$this->allMethods = array();
foreach ($this->nodes as $node) {
if ($node instanceof ASTTraitReference) {
$this->collectMethods($node);
}
}
}
return $this->allMethods;
}
/**
* This method tests if the given {@link ASTMethod} is excluded
* by precedence statement in this use statement. It will return <b>true</b>
* if the given <b>$method</b> is excluded, otherwise the return value of
* this method will be <b>false</b>.
*
* @return bool
*/
public function hasExcludeFor(ASTMethod $method)
{
$methodName = strtolower($method->getName());
$methodParent = $method->getParent();
$precedences = $this->findChildrenOfType('PDepend\\Source\\AST\\ASTTraitAdaptationPrecedence');
foreach ($precedences as $precedence) {
if (strtolower($precedence->getImage()) !== $methodName) {
continue;
}
/** @var ASTTraitReference[] */
$children = $precedence->getChildren();
array_shift($children);
foreach ($children as $child) {
if ($methodParent === $child->getType()) {
return true;
}
}
}
return false;
}
/**
* Collects all directly defined methods or method aliases for the given
* {@link ASTTraitReference}
*
* @param ASTTraitReference $reference Context trait reference.
*
* @return void
*/
private function collectMethods(ASTTraitReference $reference)
{
foreach ($reference->getType()->getAllMethods() as $method) {
foreach ($this->getAliasesFor($method) as $alias) {
$this->allMethods[] = $alias;
}
}
}
/**
* Returns an <b>array</b> with all aliases for the given method. If no
* alias exists for the given method, this method will simply return the
* an <b>array</b> with the original method.
*
* @return ASTMethod[]
*/
private function getAliasesFor(ASTMethod $method)
{
$name = strtolower($method->getName());
$newNames = array();
foreach ($this->getAliases() as $alias) {
$name2 = strtolower($alias->getImage());
if ($name2 !== $name) {
continue;
}
$modifier = $method->getModifiers();
if (-1 < $alias->getNewModifier()) {
$modifier &= ~(
State::IS_PUBLIC |
State::IS_PROTECTED |
State::IS_PRIVATE
);
$modifier |= $alias->getNewModifier();
}
$newName = $method->getName();
if ($alias->getNewName()) {
$newName = $alias->getNewName();
}
if (0 === count($alias->getChildren())) {
$newMethod = clone $method;
$newMethod->setName($newName);
$newMethod->setModifiers($modifier);
$newNames[] = $newMethod;
continue;
}
/** @var ASTTraitReference */
$child = $alias->getChild(0);
if ($child->getType() !== $method->getParent()) {
continue;
}
$newMethod = clone $method;
$newMethod->setName($newName);
$newMethod->setModifiers($modifier);
$newNames[] = $newMethod;
}
if (count($newNames) > 0) {
return $newNames;
}
return array($method);
}
/**
* Returns an <b>array</b> with all alias statements declared in this use
* statement.
*
* @return ASTTraitAdaptationAlias[]
*/
private function getAliases()
{
return $this->findChildrenOfType('PDepend\\Source\\AST\\ASTTraitAdaptationAlias');
}
}