Hi there,
I'm working on mutation testing framework ([Infection](https://github.com/infection/infection/)) that is distributed as a PHAR. One of this goal is to run target project's test suite against mutated code. Since we use reflection and load project's autoloader, we want to avoid potential conflicts between vendor files of Infection itself and the target project.
To avoid this issue, there is a project calld [PHP-Scoper](https://github.com/humbug/php-scoper). What it does is it prefixes all the namespaces of the library (including vendor folder) with some character(s), for example namespace `Infection\Mutator\PublicVisibility` is transformed to `ScoperAbc123\Infection\Mutant\PublicVisibility`.
But since it also prefixes vendor folder, PHP-Parser's classes are prefixed as well and `NodeAbstract::getType()` after this prefixing works incorrectly.
There is a hardcoded number `15` which means to remove `'PhpParser\Node'` (length=15) substring from the FQCN.
Code:
```php
// PHPParser\Node\Stmt\Declare_ -> Stmt_Declare
return strtr(substr(rtrim(get_class($this), '_'), 15), '\\', '_');
```
What I suggest is a little be more dynamic solution, to correctly extract class name (type) from the ***prefixed*** FQCL:
`ScoperAbc123\PHPParser\Node\Stmt\Declare_` -> `Stmt_Declare`
Instead of storing subnodes in a subNodes dictionary, they are
now stored as simple properties. This requires declarating the
properties, assigning them in the constructor, overriding
the getSubNodeNames() method and passing NULL to the first argument
of the NodeAbstract constructor.
[Deprecated: It's still possible to use the old mode of operation
for custom nodes by passing an array of subnodes to the constructor.]
The only behavior difference this should cause is that getSubNodeNames()
will always return the original subnode names and skip any additional
properties that were dynamically added. E.g. this means that the
"namespacedName" node added by the NameResolver visitor is not treated
as a subnode, but as a dynamic property instead.
This change improves performance and memory usage.
