function visitSequenceNode(PiBX_ParseTree_Tree $tree)
{
$this->plowTypesForLevel($tree->getLevel());
$logMessage = $tree->getLevel() . " " . str_pad(" ", $tree->getLevel()) . " ";
$logMessage .= "sequence (" . $tree->getElementCount() . ")";
$this->log($logMessage);
if ($this->currentType() instanceof PiBX_AST_Type) {
/**
* A sequence witin a Type means a list of
* attributes are incoming.
*/
$this->currentType()->setAttributeCount($tree->getElementCount());
} elseif ($this->currentType() instanceof PiBX_AST_TypeAttribute) {
$newType = new PiBX_AST_Collection();
$sf = new PiBX_CodeGen_ASTStackFrame($tree->getLevel(), $newType);
array_push($this->stack, $sf);
} elseif ($tree->getElementCount() < 0) {
$c = new PiBX_AST_Collection();
$sf = new PiBX_CodeGen_ASTStackFrame($tree->getLevel(), $c);
array_push($this->stack, $sf);
} else {
throw new RuntimeException('invalid sequence state');
}
$this->lastLevel = $tree->getLevel();
}
