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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
*/
namespace PDepend\Source\AST;
use InvalidArgumentException;
use PDepend\Source\ASTVisitor\ASTVisitor;
use PDepend\Source\Tokenizer\Token;
use PDepend\Util\Cache\CacheDriver;
/**
* This class provides an interface to a single source file.
*
* @copyright 2008-2017 Manuel Pichler. All rights reserved.
* @license http://www.opensource.org/licenses/bsd-license.php BSD License
*/
class ASTCompilationUnit extends AbstractASTArtifact
{
/**
* The internal used cache instance.
*
* @var CacheDriver|null
*
* @since 0.10.0
*/
protected $cache = null;
/**
* The unique identifier for this function.
*
* @var string|null
*/
protected $id = null;
/**
* The source file name/path.
*
* @var string|null
*/
protected $fileName = null;
/**
* The comment for this type.
*
* @var string|null
*/
protected $comment = null;
/**
* The files start line. This property must always have the value <em>1</em>.
*
* @var int
*
* @since 0.10.0
*/
protected $startLine = 0;
/**
* The files end line.
*
* @var int
*
* @since 0.10.0
*/
protected $endLine = 0;
/**
* List of classes, interfaces and functions that parsed from this file.
*
* @var AbstractASTArtifact[]
*
* @since 0.10.0
*/
protected $childNodes = array();
/**
* Was this file instance restored from the cache?
*
* @var bool
*
* @since 0.10.0
*/
protected $cached = false;
/**
* Normalized code in this file.
*
* @var string|null
*/
private $source = null;
/**
* Constructs a new source file instance.
*
* @param string|null $fileName The source file name/path.
*/
public function __construct($fileName)
{
if ($fileName && strpos($fileName, 'php://') === 0) {
$this->fileName = $fileName;
} elseif ($fileName !== null) {
$this->fileName = realpath($fileName) ?: null;
}
}
/**
* Returns the physical file name for this object.
*
* @return string|null
*/
public function getName()
{
return $this->fileName;
}
/**
* Returns the physical file name for this object.
*
* @return string|null
*/
public function getFileName()
{
return $this->fileName;
}
/**
* Returns a id for this code node.
*
* @return string|null
*/
public function getId()
{
return $this->id;
}
/**
* Sets the unique identifier for this file instance.
*
* @param string $id Identifier for this file.
*
* @return void
*
* @since 0.9.12
*/
public function setId($id)
{
$this->id = $id;
}
/**
* Setter method for the used parser and token cache.
*
* @return $this
*
* @since 0.10.0
*/
public function setCache(CacheDriver $cache)
{
$this->cache = $cache;
return $this;
}
/**
* Returns normalized source code with stripped whitespaces.
*
* @return string|null
*/
public function getSource()
{
$this->readSource();
return $this->source;
}
/**
* Returns an <b>array</b> with all tokens within this file.
*
* @return array<Token>
*/
public function getTokens()
{
return (array) $this->cache
->type('tokens')
->restore($this->getId());
}
/**
* Sets the tokens for this file.
*
* @param array<Token> $tokens The generated tokens.
*
* @return void
*/
public function setTokens(array $tokens)
{
$this->cache
->type('tokens')
->store($this->getId(), $tokens);
}
/**
* Adds a source item that was parsed from this source file.
*
* @return void
*
* @since 0.10.0
*/
public function addChild(AbstractASTArtifact $artifact)
{
$this->childNodes[$artifact->getId()] = $artifact;
}
/**
* Returns the start line number for this source file. For an existing file
* this value must always be <em>1</em>, while it can be <em>0</em> for a
* not existing dummy file.
*
* @return int
*
* @since 0.10.0
*/
public function getStartLine()
{
if ($this->startLine === 0) {
$this->readSource();
}
return $this->startLine;
}
/**
* Returns the start line number for this source file. For an existing file
* this value must always be greater <em>0</em>, while it can be <em>0</em>
* for a not existing dummy file.
*
* @return int
*
* @since 0.10.0
*/
public function getEndLine()
{
if ($this->endLine === 0) {
$this->readSource();
}
return $this->endLine;
}
/**
* This method will return <b>true</b> when this file instance was restored
* from the cache and not currently parsed. Otherwise this method will return
* <b>false</b>.
*
* @return bool
*
* @since 0.10.0
*/
public function isCached()
{
return $this->cached;
}
/**
* The magic sleep method will be called by PHP's runtime environment right
* before it serializes an instance of this class. This method returns an
* array with those property names that should be serialized.
*
* @return array<string>
*
* @since 0.10.0
*/
public function __sleep()
{
return array(
'cache',
'childNodes',
'comment',
'endLine',
'fileName',
'startLine',
'id'
);
}
/**
* The magic wakeup method will is called by PHP's runtime environment when
* a serialized instance of this class was unserialized. This implementation
* of the wakeup method restores the references between all parsed entities
* in this source file and this file instance.
*
* @return void
*
* @since 0.10.0
* @see ASTCompilationUnit::$childNodes
*/
public function __wakeup()
{
$this->cached = true;
foreach ($this->childNodes as $childNode) {
$childNode->setCompilationUnit($this);
}
}
/**
* Returns the string representation of this class.
*
* @return string
*/
public function __toString()
{
return ($this->fileName === null ? '' : $this->fileName);
}
/**
* Reads the source file if required.
*
* @return void
*/
protected function readSource()
{
if (
$this->source === null &&
$this->fileName &&
(strpos($this->fileName, 'php://') === 0 || file_exists($this->fileName))
) {
$source = file_get_contents($this->fileName);
$this->source = str_replace(array("\r\n", "\r"), "\n", $source);
$this->startLine = 1;
$this->endLine = substr_count($this->source, "\n") + 1;
}
}
// Deprecated methods
// @codeCoverageIgnoreStart
/**
* This method can be called by the PDepend runtime environment or a
* utilizing component to free up memory. This methods are required for
* PHP version < 5.3 where cyclic references can not be resolved
* automatically by PHP's garbage collector.
*
* @return void
*
* @since 0.9.12
* @deprecated Since 0.10.0
*/
public function free()
{
fwrite(STDERR, __METHOD__ . ' is deprecated since version 0.10.0' . PHP_EOL);
}
// @codeCoverageIgnoreEnd
}