Massively simplify and equalise primitive commands #150
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MattWindsor91
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@septract I've rebased this onto master now, so it should be ok to look at. Less priority than the last PRQ though. (Also, I wonder if Travis will work today…) |
We now instead check the arguments directly to see if an assignment is local or not. This is in preparation for eliminating intrinsic and symbolic PrimCommands.
Microcode can now contain stored commands, which are removed during processing. PrimCommands are now just a specialisation of Microcode to use StoredCommand as the stored command type.
This is to make sure the local command restrictions are not thwarted when I generalise atomics.
This fixes #147 and does a bit more, getting rid of some now-unnecessary stored commands.
This rather large refactor means that the only difference between assignments etc. in <| atomic brackets |> and outside them is scoping: atomic bracket commands can use shared variables. This also, in principle, means that CAS and ++/-- are available for use outside of atomic brackets. This has not been rigorously tested yet.
As seen in issue #147.
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NOTE: In typical me fashion, this is based on a previous pull request (#142), and shouldn't be merged (or really looked at in detail) until that one is up.
This is a fairly heavy PRQ (got a bit carried away with simplification, as usual) that does a lot of simplifying and expressivity-boosting changes to the primitive commands (assignment, postfix, assume, etc).
What does this do?
MicrocodeandPrimCommands have been merged (sort of): Microcode can now contain stored commands (atomic function calls), and does so until the point where we used to expand out PrimCommands.PrimCommandis now a type alias for a certain type ofMicrocode. This makesMicrocodethe only internal representation of Starling's command language.BCASandICASis gone, and the modeller models postfixes, assumes, and id-transitions directly as microcode.{| foo() |} local++ {| bar() |}are now possible.