public function fetch($name, $evalDirectly = false, $default = '__raise')
{
/* new syntax for iteration */
if ($name === ".") {
return $this->stack[0];
}
/* explode the dot notation */
$list = explode(".", $name);
$res = null;
$found = false;
if (isset($this->memoizer[$name])) {
$res = $this->memoizer[$name];
$found = true;
} else {
foreach ($this->stack as $a) {
$res = null;
$found = false;
foreach ($list as $part) {
if ($part === "") {
/* XXX syntax error */
return null;
}
$res = $this->__fetch($a, $part, $found);
if (!$found) {
continue 2;
}
$a = $res;
}
if ($found) {
$this->memoizer[$name] = $res;
break;
}
}
}
if ($found) {
/* evaluate the lambda directly if it is a tag. */
if (is_callable($res) && $evalDirectly) {
// temporarily reset to default delimiters for immediate lambda return
$ctag = $this->ctag;
$otag = $this->otag;
$this->ctag = $this->otag = null;
Context::PushContext($this);
$str = $this->render($res());
Context::PopContext();
$this->ctag = $ctag;
$this->otag = $otag;
return $str;
} else {
return $res;
}
}
/* raise an exception only if requested. */
if ($default == '__raise' || $this->proust && $this->proust->raiseOnContextMiss) {
throw new ContextMissException("Can't find {$name}");
} else {
return $default;
}
}
