Factor ast.Slice
out into its own package
#416
Merged
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I plan to use this pattern when I implement the IR package, so having it not live in the AST package is a good idea.
I've also refactored the interfaces to be simpler, and to reduce the number of methods that actually need to be implemented: almost all types (except for
ast.TypeList
) that were previously anast.Slice
now have an accessor for it.The
ast.Slice.Iter
function has been dropped, and iteration is now done with dedicated iterators inseq
.