PHPCompatibility / PHPCompatibility / 1599

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Pull #618

travis-ci

:sparkles: PHP 7.0: New sniff to detect generator return expressions

> Generator Return Expressions
>
> This feature builds upon the generator functionality introduced into PHP 5.5. It enables for a `return` statement to be used within a generator to enable for a final expression to be returned (return by reference is not allowed). > This value can be fetched using the new `Generator::getReturn()` method, which may only be used once the generator has finished yielding values.

Refs:
* http://php.net/manual/en/migration70.new-features.php#migration70.new-features.generator-return-expressions
* https://wiki.php.net/rfc/generator-return-expressions
> https://github.com/php/php-src/commit/5c230baf7

The new sniff checks for and reports on `return` statements being found in generator functions.

Includes unit tests.

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2675 of 2759 relevant lines covered (96.96%)

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