76   $dom = ebnf_parse_syntax($tokens);  variable
79     echo $dom->saveXML();
81     render_node($dom->firstChild, true);
85     $dom = new DOMDocument();  variable
86     $syntax = $dom->createElement("syntax");
92     $dom->appendChild($syntax);
93     render_node($dom->firstChild, true);
287   $dom = new DOMDocument();
288   $syntax = $dom->createElement("syntax");
290   $dom->appendChild($syntax);
301     $syntax->appendChild(ebnf_parse_production($dom, $tokens, $i));
312     return $dom;
315 function ebnf_parse_production(&$dom, &$tokens, &$i) {  argument
319   $production = $dom->createElement("rule");
324   $production->appendChild( ebnf_parse_expression($dom, $tokens, $i));
332 function ebnf_parse_expression(&$dom, &$tokens, &$i) {  argument
333   $choise = $dom->createElement("choise");
334   $choise->appendChild(ebnf_parse_term($dom, $tokens, $i));
338     $choise->appendChild(ebnf_parse_term($dom, $tokens, $i));
343 function ebnf_parse_term(&$dom, &$tokens, &$i) {  argument
344   $sequence = $dom->createElement("sequence");
345   $factor = ebnf_parse_factor($dom, $tokens, $i);
350     $sequence->appendChild(ebnf_parse_factor($dom, $tokens, $i));
355 function ebnf_parse_factor(&$dom, &$tokens, &$i) {  argument
358     $identifier = $dom->createElement("identifier");
362     $literal = $dom->createElement("terminal");
366     $expression = ebnf_parse_expression($dom, $tokens, $i);
372     $option = $dom->createElement("option");
373     $option->appendChild(ebnf_parse_expression($dom, $tokens, $i));
379     $loop = $dom->createElement("loop");
380     $loop->appendChild(ebnf_parse_expression($dom, $tokens, $i));