function testIt()
{
$dummy = new DummyObjectX();
$dummy->foo = null;
$res = PHPTAL_Context::path($dummy, 'method');
$this->assertEquals('__call', $res);
$res = phptal_path($dummy, 'foo');
$this->assertEquals(null, $res);
}
/**
* Returns true if $path can be fully resolved in $ctx context.
*/
function phptal_exists($ctx, $path)
{
// special note: this method may requires to be extended to a full
// phptal_path() sibling to avoid calling latest path part if it is a
// method or a function...
$ctx->noThrow(true);
$res = phptal_path($ctx, $path, true);
$ctx->noThrow(false);
return $res !== NULL;
}
/**
* Handles variable accesses for the tal path resolver
*
* @param $var String The variable name to check
* @return Mixed An object/array if the path is not over or a boolean
*
* @todo replace the phptal_path() with custom code
*/
public function __get($var)
{
// When the iterator item is empty we just let the tal
// expression consume by continuously returning this
// same object which should evaluate to true for 'last'
if (is_null($this->data)) {
return $this;
}
// Find the requested variable
$value = @phptal_path($this->data, $var, true);
// Check if it's an object or an array
if (is_array($value) || is_object($value)) {
// Move the context to the requested variable and return
$this->data = $value;
$this->addVarName($var);
return $this;
}
// get a hash of the variable contents
$hash = md5($value);
// compute a path for the variable to use as dictionary key
$path = $this->branch . $this->getVarPath() . $var;
// If we don't know about this var store in the dictionary
if (!isset($this->cache[$path])) {
if (!isset($this->dict[$path])) {
$this->dict[$path] = $hash;
$res = $this->branch === 'F';
} else {
// Check if the value has changed
if ($this->dict[$path] !== $hash) {
$this->dict[$path] = $hash;
$res = true;
} else {
$res = false;
}
}
$this->cache[$path] = $res;
}
return $this->cache[$path];
}
