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make types within generate_solution_type macro explicit (#8447)

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* make types within `generate_solution_type` macro explicit

Closes #8444.

Just changes the parsing logic for that macro; does not change any
emitted code. The associated types associated with the macro now
require explicit, keyword-style declaration.

**Old**:

```rust
sp_npos_elections::generate_solution_type!(
	#[compact]
	pub struct TestCompact::<VoterIndex, TargetIndex, PerU16>(16)
);
```

**New**:

```rust
sp_npos_elections::generate_solution_type!(
	#[compact]
	pub struct TestCompact::<VoterIndex = VoterIndex, CandidateIndex = TargetIndex, Accuracy = PerU16>(16)
);
```

* un-ignore doc-tests

* use new form in bin/node/runtime/

* rename CandidateIndex -> TargetIndex

* add tests demonstrating some potential compile failures
This commit is contained in:
Peter Goodspeed-Niklaus
2021-03-28 10:21:06 +02:00
committed by GitHub
parent 2af0de50c9
commit c2dd5e21a4
17 changed files with 145 additions and 16 deletions
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substrate/Cargo.lock
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@@ -8925,10 +8925,14 @@ dependencies = [
name = "sp-npos-elections-compact"
version = "3.0.0"
dependencies = [
"parity-scale-codec 2.0.1",
"proc-macro-crate 1.0.0",
"proc-macro2",
"quote",
"sp-arithmetic",
"sp-npos-elections",
"syn",
"trybuild",
]
[[package]]