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For example:
bitfield cr : vector(8, dec, bit) = {
CR0 : 7 .. 4,
LT : 7,
CR1 : 3 .. 2,
CR2 : 1,
CR3 : 0,
}
The difference this creates a newtype wrapper around the vector type,
then generates getters and setters for all the fields once, rather
than having to handle this construct separately in every backend.
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Requires linenoise library (opam install linenoise) for readline
support. Use 'make isail' to build sail with interactive
support. Plain 'make sail' should work as before with no additional
dependencies.
Use 'sail -i <commands>' to run sail interactively, e.g.
sail -new_parser -i test/ocaml/prelude.sail test/ocaml/trycatch/tc.sail
then try some commands for typechecking and evaluation
sail> :t main
sail> main ()
Doesn't use the lem interpreter right now, instead has a small
operational semantics in src/interpreter.ml, but this is not very
complete and will be changed/removed.
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- Add support for some internal nodes to type checker
- Add more explicit type annotations during rewriting
- Remove hardcoded rewrites for E_vector_update etc from Lem pretty-printer;
these will be resolved by the type checker during rewriting now
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steps
Parser now has syntax for mutual recusion blocks
mutual {
... fundefs ...
}
which is used for parsing and pretty printing
DEF_internal_mutrec. It's stripped away by the initial_check, so the
typechecker never sees DEF_internal_mutrec. Maybe this could change,
as forcing mutual recursion to be explicit would probably be a good
thing.
Added record syntax to the new parser
New option -dmagic_hash is similar to GHC's -XMagicHash in that it
allows for identifiers to contain the special hash character, which is
used to introduce new autogenerated variables in a way that doesn't
clash with existing names.
Option -sil compiles sail down to the intermediate language defined in
sil.ott (not complete yet).
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experiments
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files into runable executable.
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Modified initial_check.ml so it no longer requires type_internal. It's
still needs cleaned up in a few ways. Most of the things it's trying
to do could be done nicer if we took some time to re-factor it, and
some of the things should just be handled by the main typechecker,
leaving it as a think layer between the parse_ast and the ast.
Now that's done everything can be switched to the new typechecker and
the _new suffixes were deleted from everything except the
monomorphisation pass because I don't know the status of that.
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will be reflected in short hand type syntax, inc is still the default if undeclared
So:
default order dec
register bit[32] t (* Declares t as a decreasing vector, starting at 31 on the left and decreasing to 0 *)
default order inc
register bit[32] o (* Declares o as an increasing vector, starting at 0 on the left and increasing to 31 *)
It is presently possible to change the default mid-file; this is almost certainly bad and I will turn it into an error soon.
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Used by the Power XML extraction tool.
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definition environment. Skipping function definition, let bind, and expression checking for this commit (to come).
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homs for terms that only need locations and not full annotations
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representation of types to support unification; importing support modules from Lem including pp and util
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