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<?php
/** @file
* Parser tokens.
*/
namespace QueryPath\CSS;
/**
* Tokens for CSS.
* This class defines the recognized tokens for the parser, and also
* provides utility functions for error reporting.
*
* @ingroup querypath_css
*/
final class Token {
const char = 0;
const star = 1;
const rangle = 2;
const dot = 3;
const octo = 4;
const rsquare = 5;
const lsquare = 6;
const colon = 7;
const rparen = 8;
const lparen = 9;
const plus = 10;
const tilde = 11;
const eq = 12;
const pipe = 13;
const comma = 14;
const white = 15;
const quote = 16;
const squote = 17;
const bslash = 18;
const carat = 19;
const dollar = 20;
const at = 21; // This is not in the spec. Apparently, old broken CSS uses it.
// In legal range for string.
const stringLegal = 99;
/**
* Get a name for a given constant. Used for error handling.
*/
static function name($const_int) {
$a = array('character', 'star', 'right angle bracket',
'dot', 'octothorp', 'right square bracket', 'left square bracket',
'colon', 'right parenthesis', 'left parenthesis', 'plus', 'tilde',
'equals', 'vertical bar', 'comma', 'space', 'quote', 'single quote',
'backslash', 'carat', 'dollar', 'at');
if (isset($a[$const_int]) && is_numeric($const_int)) {
return $a[$const_int];
}
elseif ($const_int == 99) {
return 'a legal non-alphanumeric character';
}
elseif ($const_int == FALSE) {
return 'end of file';
}
return sprintf('illegal character (%s)', $const_int);
}
}