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<?php
// @codingStandardsIgnoreLine Squiz.Classes.ValidClassName.NotCamelCaps
class Scribunto_LuaDataProvider implements Iterator {
protected $engine = null;
protected $exports = null;
protected $key = 1;
public function __construct( $engine, $moduleName ) {
$this->engine = $engine;
$this->key = 1;
$module = $engine->fetchModuleFromParser(
Title::makeTitle( NS_MODULE, $moduleName )
);
if ( $module === null ) {
throw new Exception( "Failed to load module $moduleName" );
}
// Calling executeModule with null isn't the best idea, since it brings
// the whole export table into PHP and throws away metatables and such,
// but for this use case, we don't have anything like that to worry about
$this->exports = $engine->executeModule( $module->getInitChunk(), null, null );
}
public function destroy() {
$this->engine = null;
$this->exports = null;
}
public function rewind() {
$this->key = 1;
}
public function valid() {
return $this->key <= $this->exports['count'];
}
public function key() {
return $this->key;
}
public function next() {
$this->key++;
}
public function current() {
return $this->engine->getInterpreter()->callFunction( $this->exports['provide'], $this->key );
}
public function run( $key ) {
list( $ret ) = $this->engine->getInterpreter()->callFunction( $this->exports['run'], $key );
return $ret;
}
}
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