M-Labs/nac3-spec
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Merge pull request 'Kernel objects specification as per discussion in #8' (#14) from kernel-object into master

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Reviewed-on: #14
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pca006132 2021-06-08 17:11:58 +08:00
commit ae12c946c5
1 changed files with 6 additions and 3 deletions
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README.md
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@ -49,10 +49,10 @@ def fail_write() -> None:
```
* Three types of instance variables: (Issue #5)
* Host only variables: Do not add type annotation for it in the class.
* Kernel only variables: Denoted with type `Kernel[T]`.
* Kernel Invariants: Immutable in the kernel and in the host while the kernel
is executing. Type: `KernelInvariant[T]`. The types must be immutable.
(use tuple instead of list in the host, but the type annotation should still
be list?)
is executing. Type: `KernelImmutable[T]`. The types must be immutable.
In particular, the attribute cannot be modified during RPC calls.
* Normal Variables: The host can only assign to them in the `__init__`
function. Not accessible afterwards.
* Functions require full type signature, including type annotation to every
@ -62,6 +62,9 @@ def fail_write() -> None:
return a + b
```
* RPCs: optional parameter type signature, require return type signature.
* Classes with constructor annotated with `kernel/portable` can be constructed
within kernel functions. RPC calls for those objects would pass the whole
object back to the host.
* Function default parameters must be immutable.
* Function pointers are supported, and lambda expression is not supported
currently. (maybe support lambda after implementing type inference?)