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<?php
namespace Egulias\EmailValidator;
use Doctrine\Common\Lexer\AbstractLexer;
use Doctrine\Common\Lexer\Token;
/**
* @extends AbstractLexer<int, string>
*/
class EmailLexer extends AbstractLexer
{
//ASCII values
public const S_EMPTY = null;
public const C_NUL = 0;
public const S_HTAB = 9;
public const S_LF = 10;
public const S_CR = 13;
public const S_SP = 32;
public const EXCLAMATION = 33;
public const S_DQUOTE = 34;
public const NUMBER_SIGN = 35;
public const DOLLAR = 36;
public const PERCENTAGE = 37;
public const AMPERSAND = 38;
public const S_SQUOTE = 39;
public const S_OPENPARENTHESIS = 40;
public const S_CLOSEPARENTHESIS = 41;
public const ASTERISK = 42;
public const S_PLUS = 43;
public const S_COMMA = 44;
public const S_HYPHEN = 45;
public const S_DOT = 46;
public const S_SLASH = 47;
public const S_COLON = 58;
public const S_SEMICOLON = 59;
public const S_LOWERTHAN = 60;
public const S_EQUAL = 61;
public const S_GREATERTHAN = 62;
public const QUESTIONMARK = 63;
public const S_AT = 64;
public const S_OPENBRACKET = 91;
public const S_BACKSLASH = 92;
public const S_CLOSEBRACKET = 93;
public const CARET = 94;
public const S_UNDERSCORE = 95;
public const S_BACKTICK = 96;
public const S_OPENCURLYBRACES = 123;
public const S_PIPE = 124;
public const S_CLOSECURLYBRACES = 125;
public const S_TILDE = 126;
public const C_DEL = 127;
public const INVERT_QUESTIONMARK= 168;
public const INVERT_EXCLAMATION = 173;
public const GENERIC = 300;
public const S_IPV6TAG = 301;
public const INVALID = 302;
public const CRLF = 1310;
public const S_DOUBLECOLON = 5858;
public const ASCII_INVALID_FROM = 127;
public const ASCII_INVALID_TO = 199;
/**
* US-ASCII visible characters not valid for atext (@link http://tools.ietf.org/html/rfc5322#section-3.2.3)
*
* @var array
*/
protected $charValue = [
'{' => self::S_OPENCURLYBRACES,
'}' => self::S_CLOSECURLYBRACES,
'(' => self::S_OPENPARENTHESIS,
')' => self::S_CLOSEPARENTHESIS,
'<' => self::S_LOWERTHAN,
'>' => self::S_GREATERTHAN,
'[' => self::S_OPENBRACKET,
']' => self::S_CLOSEBRACKET,
':' => self::S_COLON,
';' => self::S_SEMICOLON,
'@' => self::S_AT,
'\\' => self::S_BACKSLASH,
'/' => self::S_SLASH,
',' => self::S_COMMA,
'.' => self::S_DOT,
"'" => self::S_SQUOTE,
"`" => self::S_BACKTICK,
'"' => self::S_DQUOTE,
'-' => self::S_HYPHEN,
'::' => self::S_DOUBLECOLON,
' ' => self::S_SP,
"\t" => self::S_HTAB,
"\r" => self::S_CR,
"\n" => self::S_LF,
"\r\n" => self::CRLF,
'IPv6' => self::S_IPV6TAG,
'' => self::S_EMPTY,
'\0' => self::C_NUL,
'*' => self::ASTERISK,
'!' => self::EXCLAMATION,
'&' => self::AMPERSAND,
'^' => self::CARET,
'$' => self::DOLLAR,
'%' => self::PERCENTAGE,
'~' => self::S_TILDE,
'|' => self::S_PIPE,
'_' => self::S_UNDERSCORE,
'=' => self::S_EQUAL,
'+' => self::S_PLUS,
'¿' => self::INVERT_QUESTIONMARK,
'?' => self::QUESTIONMARK,
'#' => self::NUMBER_SIGN,
'¡' => self::INVERT_EXCLAMATION,
];
public const INVALID_CHARS_REGEX = "/[^\p{S}\p{C}\p{Cc}]+/iu";
public const VALID_UTF8_REGEX = '/\p{Cc}+/u';
public const CATCHABLE_PATTERNS = [
'[a-zA-Z]+[46]?', //ASCII and domain literal
'[^\x00-\x7F]', //UTF-8
'[0-9]+',
'\r\n',
'::',
'\s+?',
'.',
];
public const NON_CATCHABLE_PATTERNS = [
'[\xA0-\xff]+',
];
public const MODIFIERS = 'iu';
/** @var bool */
protected $hasInvalidTokens = false;
/**
* @var array
*
* @psalm-var array{value:string, type:null|int, position:int}|array<empty, empty>
*/
protected $previous = [];
/**
* The last matched/seen token.
*
* @var array|Token
*
* @psalm-suppress NonInvariantDocblockPropertyType
* @psalm-var array{value:string, type:null|int, position:int}|Token<int, string>
*/
public $token;
/**
* The next token in the input.
*
* @var array|Token|null
*
* @psalm-suppress NonInvariantDocblockPropertyType
* @psalm-var array{position: int, type: int|null|string, value: int|string}|Token<int, string>|null
*/
public $lookahead;
/** @psalm-var array{value:'', type:null, position:0} */
private static $nullToken = [
'value' => '',
'type' => null,
'position' => 0,
];
/** @var string */
private $accumulator = '';
/** @var bool */
private $hasToRecord = false;
public function __construct()
{
$this->previous = $this->token = self::$nullToken;
$this->lookahead = null;
}
public function reset() : void
{
$this->hasInvalidTokens = false;
parent::reset();
$this->previous = $this->token = self::$nullToken;
}
/**
* @param int $type
* @throws \UnexpectedValueException
* @return boolean
*
* @psalm-suppress InvalidScalarArgument
*/
public function find($type) : bool
{
$search = clone $this;
$search->skipUntil($type);
if (!$search->lookahead) {
throw new \UnexpectedValueException($type . ' not found');
}
return true;
}
/**
* moveNext
*
* @return boolean
*/
public function moveNext() : bool
{
if ($this->hasToRecord && $this->previous === self::$nullToken) {
$this->accumulator .= $this->token['value'];
}
$this->previous = $this->token instanceof Token
? ['value' => $this->token->value, 'type' => $this->token->type, 'position' => $this->token->position]
: $this->token;
if($this->lookahead === null) {
$this->lookahead = self::$nullToken;
}
$hasNext = parent::moveNext();
if ($this->hasToRecord) {
$this->accumulator .= $this->token['value'];
}
return $hasNext;
}
/**
* Retrieve token type. Also processes the token value if necessary.
*
* @param string $value
* @throws \InvalidArgumentException
* @return integer
*/
protected function getType(&$value)
{
$encoded = $value;
if (mb_detect_encoding($value, 'auto', true) !== 'UTF-8') {
$encoded = mb_convert_encoding($value, 'UTF-8', 'Windows-1252');
}
if ($this->isValid($encoded)) {
return $this->charValue[$encoded];
}
if ($this->isNullType($encoded)) {
return self::C_NUL;
}
if ($this->isInvalidChar($encoded)) {
$this->hasInvalidTokens = true;
return self::INVALID;
}
return self::GENERIC;
}
protected function isValid(string $value) : bool
{
return isset($this->charValue[$value]);
}
protected function isNullType(string $value) : bool
{
return $value === "\0";
}
protected function isInvalidChar(string $value) : bool
{
return !preg_match(self::INVALID_CHARS_REGEX, $value);
}
protected function isUTF8Invalid(string $value) : bool
{
return preg_match(self::VALID_UTF8_REGEX, $value) !== false;
}
public function hasInvalidTokens() : bool
{
return $this->hasInvalidTokens;
}
/**
* getPrevious
*
* @return array
*/
public function getPrevious() : array
{
return $this->previous;
}
/**
* Lexical catchable patterns.
*
* @return string[]
*/
protected function getCatchablePatterns() : array
{
return self::CATCHABLE_PATTERNS;
}
/**
* Lexical non-catchable patterns.
*
* @return string[]
*/
protected function getNonCatchablePatterns() : array
{
return self::NON_CATCHABLE_PATTERNS;
}
protected function getModifiers() : string
{
return self::MODIFIERS;
}
public function getAccumulatedValues() : string
{
return $this->accumulator;
}
public function startRecording() : void
{
$this->hasToRecord = true;
}
public function stopRecording() : void
{
$this->hasToRecord = false;
}
public function clearRecorded() : void
{
$this->accumulator = '';
}
}
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