9 	// points the nodes that depend on this node
11 	// all nodes that will be affected if this node is updated
95 	private $nodes = NULL;  variable in Maker
125 		$this->nodes = array();
144 			$this->nodes[$name] = new MakeNode($name, $file->is_target()); 
146 		// link nodes reversly with dependency, i.e, if one node changed, 
147 		// which other nodes need to be upated
148 		while ((list($name, $node) = each($this->nodes)) != false) {	
151 				if (!isset($this->nodes[$dep])) {
164 					$this->nodes[$dep] = $dep_node;
166 				else $dep_node = $this->nodes[$dep];
170 		foreach ($this->nodes as $node) $node->find_affected($this->errors);
171 		// find those which are affected by the error nodes
173 			array_keys($this->nodes));
175 			$this->nodes[$name]->mark_invalid($this->errors);
177 		// drop the invalid nodes
178 		$nodes = array();
179 		// relink valid nodes
180 		foreach ($this->nodes as $name => $node)
182 				$nodes[$name] = new MakeNode($name, $node->is_target());
183 		foreach ($nodes as $name => $node) {
185 			foreach ($deps as $dep) $nodes[$dep]->link($node);
187 		$this->nodes = $nodes;
196 			$node = $this->nodes[$change];
204 		$nodes = array();
205 		foreach ($this->nodes as $name => $node)
207 				$nodes[$name] = $node->ref;
209 		if (!$nodes) return array();
210 		$root->unref($nodes);
211 		asort($nodes);
212         $this->make($nodes);
220 		return array_keys($nodes);
224 	private function make($nodes) {  argument
227 		while ($nodes) {
228 			reset($nodes);
229 			$name = key($nodes);
230 			$ref = current($nodes);
231 			$node = $this->nodes[$name];
233 				unset($nodes[$name]);
237 				unset($nodes[$name]);
245 						if ($this->nodes[$dep]->ref !== -1 ) {
251 						$node->unref($nodes);
257 					$node->unref($nodes);
262 					$this->wait($nodes);
266 					$this->wait($nodes);
269 					wiki_debug('nodes', $nodes);
270 //					wiki_debug('nodes', $this->nodes);
277 	private function wait(&$nodes) {  argument
288 		$node = $this->nodes[$name];
289 		$node->unref($nodes);
325 		foreach ($this->nodes as $node)