Some tests require external dependencies, such as `rustc`, `wasmer`,
`run_cairo_vm.sh`, etc. If one does not have some of these available on
their computer, then the test suite will have a lot of failed tests with
the same fail message `X is not on $PATH`. This can be a bit ditracting
and it slows running the test suite.
I've introduced some preconditions that are checked before the actual
test suite so that if some of these commands are not on path then the
tests that need them are not run. Instead, you get a single failed test
(for each of the subtrees that failed the precondition).
* Closes#2562
Checklist
---------
- [x] Translation from JuvixReg to CASM
- [x] CASM runtime
- [x] Juvix to CASM pipeline: combine the right transformations and
check prerequisites
- [x] CLI commands: add target `casm` to the `compile` commands
- [x] Tests:
- [x] Test the translation from JuvixReg to CASM
- [x] Test the entire pipeline from Juvix to CASM
* Closes#2561
* Defines an extended subset of Cairo Assembly, following Section 5 of
[1].
* Adds the commands `juvix dev casm read file.casm` and `juvix dev casm
run file.casm` to print and run `*.casm` files.
* The tests cover CASM semantics. Some are "manual translations" of
corresponding JuvixAsm tests according to the JuvixAsm -> CASM
compilation concept.
