Does not work with Lexer v1

[jackbentley]

Since the added support of Lexer v3, it's broken support of Lexer v1.

doctrine/orm v2.14 supports the usage of doctrine/lexer ^1.2.3. Thus, this library allows the installation of it. However, it looks like the code does not support it.

Specifically, BaseVariadicFunction tries to access $lexer->lookahead in it's newer object form but it's an array in < v2.

I suppose need to either conflict with the lower lexer version and prevent install; or add support for it

postgresql-for-doctrine/src/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/BaseVariadicFunction.php

Line 33 in 92be1de

if ($lexer->lookahead?->type === null) {

https://github.com/doctrine/lexer/blob/2.0.0/src/AbstractLexer.php#L153

https://github.com/doctrine/lexer/blob/1.3.x/src/AbstractLexer.php#L159

[martin-georgiev]

Fixed with #300