Metarules

Metarules are generic constraints which can be placed on an object to describe how it relates to other objects. They have a textual representation and can be embedded within any text so long as the surrounding text does not contain any unmatched [.

Describes a comparison between a field's value in an object and the specified value.

A rule specifying a general constraint

Try to extract a vector of rules from text

Returns an empty vector if unsuccessful.

Try to convert the Julia AST expr into rules