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--TEST--
Nullsafe chain should stop at middle null and skip later arguments
--FILE--
<?php
class NullsafeChainLeaf
{
public function value(string $arg): string
{
echo "leaf:$arg\n";
return $arg;
}
}
class NullsafeChainMiddle
{
public function __construct(private ?NullsafeChainLeaf $leaf)
{
}
public function leaf(string $arg): ?NullsafeChainLeaf
{
echo "middle:$arg\n";
return $this->leaf;
}
}
class NullsafeChainRoot
{
public function __construct(private ?NullsafeChainMiddle $middle)
{
}
public function middle(string $arg): ?NullsafeChainMiddle
{
echo "root:$arg\n";
return $this->middle;
}
}
function make_arg(string $name): string
{
echo "arg:$name\n";
return $name;
}
function main(): void
{
$root = new NullsafeChainRoot(new NullsafeChainMiddle(null));
var_dump($root?->middle(make_arg('root'))?->leaf(make_arg('middle'))?->value(make_arg('leaf')));
$root = new NullsafeChainRoot(new NullsafeChainMiddle(new NullsafeChainLeaf()));
var_dump($root?->middle(make_arg('root2'))?->leaf(make_arg('middle2'))?->value(make_arg('leaf2')));
}
?>
--EXPECT--
arg:root
root:root
arg:middle
middle:middle
NULL
arg:root2
root:root2
arg:middle2
middle:middle2
arg:leaf2
leaf:leaf2
string(5) "leaf2"