/**
* @param \Generator $generator
* @param string $prefix
*/
public function __construct(\Generator $generator, string $prefix)
{
$yielded = $generator->current();
$prefix .= \sprintf("; %s yielded at key %s", \is_object($yielded) ? \get_class($yielded) : \gettype($yielded), $generator->key());
if (!$generator->valid()) {
parent::__construct($prefix);
return;
}
$reflGen = new \ReflectionGenerator($generator);
$exeGen = $reflGen->getExecutingGenerator();
if ($isSubgenerator = $exeGen !== $generator) {
$reflGen = new \ReflectionGenerator($exeGen);
}
parent::__construct(\sprintf("%s on line %s in %s", $prefix, $reflGen->getExecutingLine(), $reflGen->getExecutingFile()));
}
public static function castReflectionGenerator(\ReflectionGenerator $c, array $a, Stub $stub, $isNested)
{
$prefix = Caster::PREFIX_VIRTUAL;
if ($c->getThis()) {
$a[$prefix . 'this'] = new CutStub($c->getThis());
}
$x = $c->getFunction();
$frame = array('class' => isset($x->class) ? $x->class : null, 'type' => isset($x->class) ? $x->isStatic() ? '::' : '->' : null, 'function' => $x->name, 'file' => $c->getExecutingFile(), 'line' => $c->getExecutingLine());
if ($trace = $c->getTrace(DEBUG_BACKTRACE_IGNORE_ARGS)) {
$x = new \ReflectionGenerator($c->getExecutingGenerator());
array_unshift($trace, array('function' => 'yield', 'file' => $x->getExecutingFile(), 'line' => $x->getExecutingLine() - 1));
$trace[] = $frame;
$a[$prefix . 'trace'] = new TraceStub($trace, false, 0, -1, -1);
} else {
$x = new FrameStub($frame, false, true);
$x = ExceptionCaster::castFrameStub($x, array(), $x, true);
$a[$prefix . 'executing'] = new EnumStub(array($frame['class'] . $frame['type'] . $frame['function'] . '()' => $x[$prefix . 'src']));
}
return $a;
}
/**
* A general purpose function for creating error messages from generator yields
*
* @param \Generator $generator
* @param string $prefix
* @return string
*/
function makeGeneratorError(\Generator $generator, $prefix = "Generator error")
{
if (PHP_MAJOR_VERSION < 7 || !$generator->valid()) {
return $prefix;
}
$reflGen = new \ReflectionGenerator($generator);
$exeGen = $reflGen->getExecutingGenerator();
if ($isSubgenerator = $exeGen !== $generator) {
$reflGen = new \ReflectionGenerator($exeGen);
}
return sprintf("{$prefix} on line %s in %s", $reflGen->getExecutingLine(), $reflGen->getExecutingFile());
}