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<?php
/**
* This file is part of PDepend.
*
* PHP Version 5
*
* Copyright (c) 2008-2017 Manuel Pichler <mapi@pdepend.org>.
* 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 0.9.12
*/
namespace PDepend\Source\AST;
use PDepend\Source\ASTVisitor\ASTVisitor;
/**
* This node class represents a closure-expression.
*
* @copyright 2008-2017 Manuel Pichler. All rights reserved.
* @license http://www.opensource.org/licenses/bsd-license.php BSD License
*
* @since 0.9.12
*/
class ASTClosure extends AbstractASTNode implements ASTCallable
{
/**
* @return ASTType|null
*/
public function getReturnType()
{
foreach ($this->nodes as $node) {
if ($node instanceof ASTType) {
return $node;
}
}
return null;
}
/**
* This method will return <b>true</b> when this closure returns by
* reference.
*
* @return bool
*/
public function returnsByReference()
{
return $this->getMetadataBoolean(5);
}
/**
* This method can be used to flag this closure as returns by reference.
*
* @param bool $returnsReference Does this closure return by reference?
*
* @return void
*/
public function setReturnsByReference($returnsReference)
{
$this->setMetadataBoolean(5, (boolean) $returnsReference);
}
/**
* Returns whether this closure was defined as static or not.
*
* This method will return <b>TRUE</b> when the closure was declared as
* followed:
*
* <code>
* $closure = static function( $e ) {
* return pow( $e, 2 );
* }
* </code>
*
* And it will return <b>FALSE</b> when we declare the closure as usual:
*
* <code>
* $closure = function( $e ) {
* return pow( $e, 2 );
* }
* </code>
*
* @return bool
*
* @since 1.0.0
*/
public function isStatic()
{
return $this->getMetadataBoolean(6);
}
/**
* This method can be used to flag this closure instance as static.
*
* @param bool $static Whether this closure is static or not.
*
* @return void
*
* @since 1.0.0
*/
public function setStatic($static)
{
$this->setMetadataBoolean(6, (boolean) $static);
}
/**
* Returns the total number of the used property bag.
*
* @return int
*
* @since 1.0.0
* @see ASTNode#getMetadataSize()
*/
protected function getMetadataSize()
{
return 7;
}
}