andrejbauer / coop Goto Github PK
View Code? Open in Web Editor NEWA prototype programming language for programming with runners
License: MIT License
A prototype programming language for programming with runners
License: MIT License
Hi Andrej & Danel,
Firstly, congrats on your ESOP submission being accepted. Exciting work!
I encountered a minor build issue when trying to make the coop executable. Perhaps it is a platform issue (I am running Linux Mint 19.2 Tina), but the library "menhirlib" specified in the src/dune file is case sensitive on my system; the correct library name is: "menhirLib".
Looking forward to playing around with coop!
Best,
Craig
In the runtime, an exception should be able to pass through try
and user
(but not run
).
I have written the following coop
program:
type wrapper = Wrap of int
let f (n : int) @ wrapper =
match getenv with {
| Wrap m -> setenv (Wrap (user n+m with {})); ()
}
let bug (_ : unit) : wrapper =
kernel (f 42) @ 0 finally {
return _ @ w -> Wrap w
}
Running bug ()
results in a runtime error: a pattern mismatch. The reason is that I have incorrectly initialised the kernel function f
with the state 0
rather than the type-correct Wrap 0
.
If I change the return
clause of bug
to:
return _ @ w -> w
then I get the expected error:
this computation should have type wrapper {} but has type int {}
However, I would expect type inference to be able to detect the incorrect initial state value.
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