<?php
/**
* Zend Framework (http://framework.zend.com/)
*
* @link http://github.com/zendframework/zf2 for the canonical source repository
* @copyright Copyright (c) 2005-2016 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
namespace Zend\Code\Scanner;
use Zend\Code\Annotation;
use Zend\Code\Exception;
use Zend\Code\NameInformation;
use function current;
use function is_string;
use function next;
use function reset;
use function strtolower;
use function substr;
use function strpos;
use function var_export;
class ConstantScanner implements ScannerInterface
{
/**
* @var bool
*/
protected $isScanned = false;
/**
* @var array
*/
protected $tokens;
/**
* @var NameInformation
*/
protected $nameInformation;
/**
* @var string
*/
protected $class;
/**
* @var ClassScanner
*/
protected $scannerClass;
/**
* @var int
*/
protected $lineStart;
/**
* @var string
*/
protected $docComment;
/**
* @var string
*/
protected $name;
/**
* @var string
*/
protected $value;
/**
* Constructor
*
* @param array $constantTokens
* @param NameInformation $nameInformation
*/
public function __construct(array $constantTokens, NameInformation $nameInformation = null)
{
$this->tokens = $constantTokens;
$this->nameInformation = $nameInformation;
}
/**
* @param string $class
*/
public function setClass($class)
{
$this->class = $class;
}
/**
* @param ClassScanner $scannerClass
*/
public function setScannerClass(ClassScanner $scannerClass)
{
$this->scannerClass = $scannerClass;
}
/**
* @return ClassScanner
*/
public function getClassScanner()
{
return $this->scannerClass;
}
/**
* @return string
*/
public function getName()
{
$this->scan();
return $this->name;
}
/**
* @return string
*/
public function getValue()
{
$this->scan();
return $this->value;
}
/**
* @return string
*/
public function getDocComment()
{
$this->scan();
return $this->docComment;
}
/**
* @param Annotation\AnnotationManager $annotationManager
* @return AnnotationScanner
*/
public function getAnnotations(Annotation\AnnotationManager $annotationManager)
{
if (($docComment = $this->getDocComment()) == '') {
return false;
}
return new AnnotationScanner($annotationManager, $docComment, $this->nameInformation);
}
/**
* @return string
*/
public function __toString()
{
$this->scan();
return var_export($this, true);
}
/**
* Scan tokens
*
* @throws Exception\RuntimeException
*/
protected function scan()
{
if ($this->isScanned) {
return;
}
if (! $this->tokens) {
throw new Exception\RuntimeException('No tokens were provided');
}
/**
* Variables & Setup
*/
$tokens = &$this->tokens;
reset($tokens);
SCANNER_TOP:
$token = current($tokens);
if (! is_string($token)) {
list($tokenType, $tokenContent, $tokenLine) = $token;
switch ($tokenType) {
case T_DOC_COMMENT:
if ($this->docComment === null && $this->name === null) {
$this->docComment = $tokenContent;
}
goto SCANNER_CONTINUE;
// fall-through
case T_STRING:
$string = is_string($token) ? $token : $tokenContent;
if (null === $this->name) {
$this->name = $string;
} else {
if ('self' == strtolower($string)) {
list($tokenNextType, $tokenNextContent, $tokenNextLine) = next($tokens);
if ('::' == $tokenNextContent) {
list($tokenNextType, $tokenNextContent, $tokenNextLine) = next($tokens);
if ($this->getClassScanner()->getConstant($tokenNextContent)) {
$this->value = $this->getClassScanner()->getConstant($tokenNextContent)->getValue();
}
}
}
}
goto SCANNER_CONTINUE;
// fall-through
case T_CONSTANT_ENCAPSED_STRING:
case T_DNUMBER:
case T_LNUMBER:
$string = is_string($token) ? $token : $tokenContent;
if (0 === strpos($string, '"') || 0 === strpos($string, "'")) {
$this->value = substr($string, 1, -1); // Remove quotes
} else {
$this->value = $string;
}
goto SCANNER_CONTINUE;
// fall-trough
default:
goto SCANNER_CONTINUE;
}
}
SCANNER_CONTINUE:
if (next($this->tokens) === false) {
goto SCANNER_END;
}
goto SCANNER_TOP;
SCANNER_END:
$this->isScanned = true;
}
}