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1 efrain 1
<?php
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/**
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 * Abstract base node class that all others inherit from.
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 *
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 * Why do we not use the DOM extension?  (1) It is not always available,
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 * (2) it has funny constraints on the data it can represent,
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 * whereas we want a maximally flexible representation, and (3) its
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 * interface is a bit cumbersome.
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 */
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abstract class HTMLPurifier_Node
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{
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    /**
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     * Line number of the start token in the source document
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     * @type int
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     */
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    public $line;
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    /**
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     * Column number of the start token in the source document. Null if unknown.
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     * @type int
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     */
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    public $col;
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    /**
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     * Lookup array of processing that this token is exempt from.
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     * Currently, valid values are "ValidateAttributes".
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     * @type array
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     */
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    public $armor = array();
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    /**
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     * When true, this node should be ignored as non-existent.
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     *
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     * Who is responsible for ignoring dead nodes?  FixNesting is
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     * responsible for removing them before passing on to child
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     * validators.
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     */
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    public $dead = false;
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    /**
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     * Returns a pair of start and end tokens, where the end token
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     * is null if it is not necessary. Does not include children.
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     * @type array
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     */
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    abstract public function toTokenPair();
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}
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// vim: et sw=4 sts=4