Change the AST representation of CTree
to use "Trees that grow"
#96
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This PR changes the representation of the
CTree
AST to trees that grow. This is a step towards having a single AST representation across the entire repo.I got rid of the fixpoint decorations by adding a
CTreeE
constructor to theCTree
datatype, which can be used to store each of the different references by choosing the right index type. This approach of with the index can also be later used to add additional fields to the terms (e.g. for storing custom generators or comments for each term).