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<?php
namespace Doctrine\Common\Annotations;
use Doctrine\Common\Lexer\AbstractLexer;
use function ctype_alpha;
use function is_numeric;
use function str_replace;
use function stripos;
use function strlen;
use function strpos;
use function strtolower;
use function substr;
/**
* Simple lexer for docblock annotations.
*/
final class DocLexer extends AbstractLexer
{
public const T_NONE = 1;
public const T_INTEGER = 2;
public const T_STRING = 3;
public const T_FLOAT = 4;
// All tokens that are also identifiers should be >= 100
public const T_IDENTIFIER = 100;
public const T_AT = 101;
public const T_CLOSE_CURLY_BRACES = 102;
public const T_CLOSE_PARENTHESIS = 103;
public const T_COMMA = 104;
public const T_EQUALS = 105;
public const T_FALSE = 106;
public const T_NAMESPACE_SEPARATOR = 107;
public const T_OPEN_CURLY_BRACES = 108;
public const T_OPEN_PARENTHESIS = 109;
public const T_TRUE = 110;
public const T_NULL = 111;
public const T_COLON = 112;
public const T_MINUS = 113;
/** @var array<string, int> */
protected $noCase = [
'@' => self::T_AT,
',' => self::T_COMMA,
'(' => self::T_OPEN_PARENTHESIS,
')' => self::T_CLOSE_PARENTHESIS,
'{' => self::T_OPEN_CURLY_BRACES,
'}' => self::T_CLOSE_CURLY_BRACES,
'=' => self::T_EQUALS,
':' => self::T_COLON,
'-' => self::T_MINUS,
'\\' => self::T_NAMESPACE_SEPARATOR,
];
/** @var array<string, int> */
protected $withCase = [
'true' => self::T_TRUE,
'false' => self::T_FALSE,
'null' => self::T_NULL,
];
/**
* Whether the next token starts immediately, or if there were
* non-captured symbols before that
*/
public function nextTokenIsAdjacent(): bool
{
return $this->token === null
|| ($this->lookahead !== null
&& ($this->lookahead['position'] - $this->token['position']) === strlen($this->token['value']));
}
/**
* {@inheritdoc}
*/
protected function getCatchablePatterns()
{
return [
'[a-z_\\\][a-z0-9_\:\\\]*[a-z_][a-z0-9_]*',
'(?:[+-]?[0-9]+(?:[\.][0-9]+)*)(?:[eE][+-]?[0-9]+)?',
'"(?:""|[^"])*+"',
];
}
/**
* {@inheritdoc}
*/
protected function getNonCatchablePatterns()
{
return ['\s+', '\*+', '(.)'];
}
/**
* {@inheritdoc}
*/
protected function getType(&$value)
{
$type = self::T_NONE;
if ($value[0] === '"') {
$value = str_replace('""', '"', substr($value, 1, strlen($value) - 2));
return self::T_STRING;
}
if (isset($this->noCase[$value])) {
return $this->noCase[$value];
}
if ($value[0] === '_' || $value[0] === '\\' || ctype_alpha($value[0])) {
return self::T_IDENTIFIER;
}
$lowerValue = strtolower($value);
if (isset($this->withCase[$lowerValue])) {
return $this->withCase[$lowerValue];
}
// Checking numeric value
if (is_numeric($value)) {
return strpos($value, '.') !== false || stripos($value, 'e') !== false
? self::T_FLOAT : self::T_INTEGER;
}
return $type;
}
}
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