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  1. Mar 19, 2020
    • Peter Goodspeed-Niklaus's avatar
      Factor out can_set_code · ef225e82
      Peter Goodspeed-Niklaus authored 
      The motivation for this feature is parachain runtime upgrades, which
happen in two different moments: the initial call, when the checks
should be performed, and at the actual upgrade block. It's much
better and more maintainable to just call `can_set_code` in the
function than to manually copy those checks.

I'm not entirely thrilled with the interface, which requires
cloning the entire code vector in `set_code`. However, it looks
like something in `decl_module!` does not play nicely with
references in its function arguments. If `code` has a lifetime,
it _must_ be named, which gives us this signature.

```rust
pub fn can_set_code<'a>(origin, code: &'a [u8]) {
```

Unfortunately, attempting to compile with that signature generates
a very large and baffling collection of build errors, so I decided
to abandon that path for now.
      ef225e82
  3. Mar 06, 2020
  5. Mar 05, 2020