4.0 | Add parameter types to all (non-test) methods

[jrfnl]

Description

4.0 | PHPCS Framework classes: add parameter types

4.0 | Files: add parameter types

This commit explicitly does not include adding a parameter type to the File::getTokensAsString() $start and $length parameters as the pre-existing inline parameter validation is more comprehensive and more reliable.

4.0 | Filters: add parameter types

4.0 | Generators: add parameter types

Includes changing the expected parameter type for a couple of methods from DomNode to DomElement.
The previous was incorrect, but changing the method signature by making a type more specific, is a breaking change, so had to wait until now.

4.0 | Reports: add parameter types

4.0 | Tokenizers: add parameter types

4.0 | Util classes: add parameter types

This commit explicitly does not include adding a parameter type to the MessageCollector::add() $message and $type parameters and the Common::getSniffCode() $sniffsClass parameter, as the pre-existing inline parameter validation is more comprehensive and more reliable.

Includes removing a type check from an "internal-only" class which is no longer necessary (and updating the associated test).

4.0 | (Abstract) Sniff classes: add parameter types

4.0 | Standards/Generic: add parameter types to sniffs

4.0 | Standards/PEAR: add parameter types to sniffs

4.0 | Standards/PSR: add parameter types to sniffs

4.0 | Standards/Squiz: add parameter types to sniffs

4.0 | Standards/Zend: add parameter types to sniffs

4.0 | Tests: add parameter types to sniffs used as test fixtures

4.0 | AbstractSniffTestCase: add parameter types

Includes updating the sniff test classes overloading these methods.

Suggested changelog entry

• Wherever possible based on the PHP 7.2 minimum version, parameter types have been added to all methods.

Related issues/external references

Fixes #390

[jrfnl]

Associated update PR for the PHPCS 4.0 dev upgrade guide: PHPCSStandards/PHP_CodeSniffer-documentation#55