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<?php
/**
* The Tokens class contains weightings for tokens based on their
* probability of occurance in a file.
*
* PHP version 5
*
* @category PHP
* @package PHP_CodeSniffer
* @author Greg Sherwood <gsherwood@squiz.net>
* @author Marc McIntyre <mmcintyre@squiz.net>
* @copyright 2006-2011 Squiz Pty Ltd (ABN 77 084 670 600)
* @license http://matrix.squiz.net/developer/tools/php_cs/licence BSD Licence
* @link http://pear.php.net/package/PHP_CodeSniffer
*/
define('T_NONE', 0);
define('T_OPEN_CURLY_BRACKET', 1000);
define('T_CLOSE_CURLY_BRACKET', 1001);
define('T_OPEN_SQUARE_BRACKET', 1002);
define('T_CLOSE_SQUARE_BRACKET', 1003);
define('T_OPEN_PARENTHESIS', 1004);
define('T_CLOSE_PARENTHESIS', 1005);
define('T_COLON', 1006);
define('T_STRING_CONCAT', 1007);
define('T_INLINE_THEN', 1008);
define('T_NULL', 1009);
define('T_FALSE', 1010);
define('T_TRUE', 1011);
define('T_SEMICOLON', 1012);
define('T_EQUAL', 1013);
define('T_MULTIPLY', 1015);
define('T_DIVIDE', 1016);
define('T_PLUS', 1017);
define('T_MINUS', 1018);
define('T_MODULUS', 1019);
define('T_POWER', 1020);
define('T_BITWISE_AND', 1021);
define('T_BITWISE_OR', 1022);
define('T_ARRAY_HINT', 1023);
define('T_GREATER_THAN', 1024);
define('T_LESS_THAN', 1025);
define('T_BOOLEAN_NOT', 1026);
define('T_SELF', 1027);
define('T_PARENT', 1028);
define('T_DOUBLE_QUOTED_STRING', 1029);
define('T_COMMA', 1030);
define('T_HEREDOC', 1031);
define('T_PROTOTYPE', 1032);
define('T_THIS', 1033);
define('T_REGULAR_EXPRESSION', 1034);
define('T_PROPERTY', 1035);
define('T_LABEL', 1036);
define('T_OBJECT', 1037);
define('T_COLOUR', 1038);
define('T_HASH', 1039);
define('T_URL', 1040);
define('T_STYLE', 1041);
define('T_ASPERAND', 1042);
define('T_DOLLAR', 1043);
define('T_TYPEOF', 1044);
define('T_CLOSURE', 1045);
define('T_BACKTICK', 1046);
define('T_START_NOWDOC', 1047);
define('T_NOWDOC', 1048);
define('T_END_NOWDOC', 1049);
// Some PHP 5.3 tokens, replicated for lower versions.
if (defined('T_NAMESPACE') === false) {
define('T_NAMESPACE', 1050);
}
if (defined('T_NS_SEPARATOR') === false) {
define('T_NS_SEPARATOR', 1051);
}
/**
* The Tokens class contains weightings for tokens based on their
* probability of occurance in a file.
*
* The less the chance of a high occurance of an abitrary token, the higher
* the weighting.
*
* @category PHP
* @package PHP_CodeSniffer
* @author Greg Sherwood <gsherwood@squiz.net>
* @author Marc McIntyre <mmcintyre@squiz.net>
* @copyright 2006-2011 Squiz Pty Ltd (ABN 77 084 670 600)
* @license http://matrix.squiz.net/developer/tools/php_cs/licence BSD Licence
* @version Release: @package_version@
* @link http://pear.php.net/package/PHP_CodeSniffer
*/
final class PHP_CodeSniffer_Tokens
{
/**
* The token weightings.
*
* @var array(int => int)
*/
public static $weightings = array(
T_CLASS => 1000,
T_INTERFACE => 1000,
T_NAMESPACE => 1000,
T_FUNCTION => 100,
T_CLOSURE => 100,
/*
Conditions.
*/
T_WHILE => 50,
T_FOR => 50,
T_FOREACH => 50,
T_IF => 50,
T_ELSE => 50,
T_ELSEIF => 50,
T_WHILE => 50,
T_DO => 50,
T_TRY => 50,
T_CATCH => 50,
T_SWITCH => 50,
T_SELF => 25,
T_PARENT => 25,
/*
Operators and arithmetic.
*/
T_BITWISE_AND => 8,
T_BITWISE_OR => 8,
T_MULTIPLY => 5,
T_DIVIDE => 5,
T_PLUS => 5,
T_MINUS => 5,
T_MODULUS => 5,
T_POWER => 5,
T_EQUAL => 5,
T_AND_EQUAL => 5,
T_CONCAT_EQUAL => 5,
T_DIV_EQUAL => 5,
T_MINUS_EQUAL => 5,
T_MOD_EQUAL => 5,
T_MUL_EQUAL => 5,
T_OR_EQUAL => 5,
T_PLUS_EQUAL => 5,
T_XOR_EQUAL => 5,
T_BOOLEAN_AND => 5,
T_BOOLEAN_OR => 5,
/*
Equality.
*/
T_IS_EQUAL => 5,
T_IS_NOT_EQUAL => 5,
T_IS_IDENTICAL => 5,
T_IS_NOT_IDENTICAL => 5,
T_IS_SMALLER_OR_EQUAL => 5,
T_IS_GREATER_OR_EQUAL => 5,
);
/**
* Tokens that represent assignments.
*
* @var array(int)
*/
public static $assignmentTokens = array(
T_EQUAL,
T_AND_EQUAL,
T_CONCAT_EQUAL,
T_DIV_EQUAL,
T_MINUS_EQUAL,
T_MOD_EQUAL,
T_MUL_EQUAL,
T_PLUS_EQUAL,
T_XOR_EQUAL,
T_DOUBLE_ARROW,
);
/**
* Tokens that represent equality comparisons.
*
* @var array(int)
*/
public static $equalityTokens = array(
T_IS_EQUAL,
T_IS_NOT_EQUAL,
T_IS_IDENTICAL,
T_IS_NOT_IDENTICAL,
T_IS_SMALLER_OR_EQUAL,
T_IS_GREATER_OR_EQUAL,
);
/**
* Tokens that represent comparison operator.
*
* @var array(int)
*/
public static $comparisonTokens = array(
T_IS_EQUAL,
T_IS_IDENTICAL,
T_IS_NOT_EQUAL,
T_IS_NOT_IDENTICAL,
T_LESS_THAN,
T_GREATER_THAN,
T_IS_SMALLER_OR_EQUAL,
T_IS_GREATER_OR_EQUAL,
);
/**
* Tokens that represent arithmetic operators.
*
* @var array(int)
*/
public static $arithmeticTokens = array(
T_PLUS,
T_MINUS,
T_MULTIPLY,
T_DIVIDE,
T_MODULUS,
);
/**
* Tokens that represent casting.
*
* @var array(int)
*/
public static $castTokens = array(
T_INT_CAST,
T_STRING_CAST,
T_DOUBLE_CAST,
T_ARRAY_CAST,
T_BOOL_CAST,
T_OBJECT_CAST,
T_UNSET_CAST,
);
/**
* Token types that open parethesis.
*
* @var array(int)
*/
public static $parenthesisOpeners = array(
T_ARRAY,
T_FUNCTION,
T_CLOSURE,
T_WHILE,
T_FOR,
T_FOREACH,
T_SWITCH,
T_IF,
T_ELSEIF,
T_CATCH,
);
/**
* Tokens that are allowed to open scopes.
*
* @var array(int)
*/
public static $scopeOpeners = array(
T_CLASS,
T_INTERFACE,
T_NAMESPACE,
T_FUNCTION,
T_CLOSURE,
T_IF,
T_SWITCH,
T_CASE,
T_DEFAULT,
T_WHILE,
T_ELSE,
T_ELSEIF,
T_FOR,
T_FOREACH,
T_DO,
T_TRY,
T_CATCH,
);
/**
* Tokens that represent scope modifiers.
*
* @var array(int)
*/
public static $scopeModifiers = array(
T_PRIVATE,
T_PUBLIC,
T_PROTECTED,
);
/**
* Tokens that perform operations.
*
* @var array(int)
*/
public static $operators = array(
T_MINUS,
T_PLUS,
T_MULTIPLY,
T_DIVIDE,
T_MODULUS,
T_POWER,
T_BITWISE_AND,
T_BITWISE_OR,
);
/**
* Tokens that perform boolean operations.
*
* @var array(int)
*/
public static $booleanOperators = array(
T_BOOLEAN_AND,
T_BOOLEAN_OR,
T_LOGICAL_AND,
T_LOGICAL_OR,
T_LOGICAL_XOR,
);
/**
* Tokens that open code blocks.
*
* @var array(int)
*/
public static $blockOpeners = array(
T_OPEN_CURLY_BRACKET,
T_OPEN_SQUARE_BRACKET,
T_OPEN_PARENTHESIS,
);
/**
* Tokens that don't represent code.
*
* @var array(int)
*/
public static $emptyTokens = array(
T_WHITESPACE,
T_COMMENT,
T_DOC_COMMENT,
);
/**
* Tokens that are comments.
*
* @var array(int)
*/
public static $commentTokens = array(
T_COMMENT,
T_DOC_COMMENT,
);
/**
* Tokens that represent strings.
*
* Note that T_STRINGS are NOT represented in this list.
*
* @var array(int)
*/
public static $stringTokens = array(
T_CONSTANT_ENCAPSED_STRING,
T_DOUBLE_QUOTED_STRING,
);
/**
* Tokens that represent brackets and parenthesis.
*
* @var array(int)
*/
public static $bracketTokens = array(
T_OPEN_CURLY_BRACKET,
T_CLOSE_CURLY_BRACKET,
T_OPEN_SQUARE_BRACKET,
T_CLOSE_SQUARE_BRACKET,
T_OPEN_PARENTHESIS,
T_CLOSE_PARENTHESIS,
);
/**
* Tokens that include files.
*
* @var array(int)
*/
public static $includeTokens = array(
T_REQUIRE_ONCE,
T_REQUIRE,
T_INCLUDE_ONCE,
T_INCLUDE,
);
/**
* Tokens that make up a heredoc string.
*
* @var array(int)
*/
public static $heredocTokens = array(
T_START_HEREDOC,
T_END_HEREDOC,
T_HEREDOC,
);
/**
* A PHP_CodeSniffer_Tokens class cannot be constructed.
*
* Only static calls are allowed.
*/
private function __construct()
{
}//end __construct()
/**
* Returns the highest weighted token type.
*
* Tokens are weighted by their approximate frequency of appearance in code
* - the less frequently they appear in the code, the higher the weighting.
* For example T_CLASS tokens apprear very infrequently in a file, and
* therefore have a high weighting.
*
* Returns false if there are no weightings for any of the specified tokens.
*
* @param array(int) $tokens The token types to get the highest weighted
* type for.
*
* @return int The highest weighted token.
*/
public static function getHighestWeightedToken(array $tokens)
{
$highest = -1;
$highestType = false;
$weights = self::$weightings;
foreach ($tokens as $token) {
if (isset($weights[$token]) === true) {
$weight = $weights[$token];
} else {
$weight = 0;
}
if ($weight > $highest) {
$highest = $weight;
$highestType = $token;
}
}
return $highestType;
}//end getHighestWeightedToken()
}//end class
?>
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