Deprecate Checker and replace with Java's Predicate. #6663
Merged
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Description
Replaces all uses of the pointless checker class with Java's predicate.
This is technically a breaking change: if something implements Expression directly (rather than one of its common subclasses, e.g. SimpleExpression, PropertyExpression) then it will have to change its Checker methods to Predicate methods.
To preserve compatibility everywhere else, the deprecated Checker now extends Predicate and forwards the method call itself, so addons can still feed old Checkers into the new Predicate arguments.
Target Minecraft Versions: any
Requirements: none
Related Issues: none