Gav Wood authored Jan 08, 2018 and asynchronous rob committed Jan 08, 2018

* Introduce first groundwork for Wasm executor.

* Remove old Rust-runtime code.

* Avoid commiting compled files.

* Add runtime precompile.

* Rename so module makes more sense.

* Further renaming.

* Ensure tests work.

* Allow bringing in of externalities.

- Add util functions/macros.
- Add uncompacted runtime.
- Add some external crates from pwasm-std for managing allocs/memory
stuff.

* Nice macros for imports.

* Allow passing in of data through allocators.

Make memcpy and malloc work.
Basic allocator.

* Can now pass in bytes to WasmExecutor.

* Additional cleanup.

* Switch usages of `OutData` to `u64`

No need to be able to return bytes anymore.

* convert to safe but extremely verbose type conversion.

@rphmeier any more concise way of doing this?

* Remove StaticExternalities distinction.

* Remove another unused use.

* Refactor wasm utils out

* Remove extraneous copies that weren't really testing anything.

* Try to use wasm 0.15

* Make it work!

* Call-time externalities working.

* Add basic externalities.

* Fix grumbles and note unwraps to be sorted.

* Test storage externality.

Unforunately had to change signatures of externalities to avoid
immutable function returning a reference. Not sure what to do about
this...

* Fix nits.

* Compile collation logic.

* Move back to refs. Yey.

* Remove "object" id for storage access.

* Fix test.

* Fix up rest of tests.

* remove unwrap.

* Expose set/get code in externalities

Also improve tests and add nice wrappers in rust-wasm.

* Add validator set.

* Introduce validator set into externalities and test.

* Add another external function.

* Remove code and validators; use storage for everything.

* Introduce validators function.

* Tests (and a fix) for the validators getter.

* Allow calls into runtime to return data.

* Remove unneeded trace.

* Make runtime printing a bit nicer.

* Create separate runtimes for testing and polkadot.

* Remove commented code.

* Use new path.

* Refactor into shared support module.

* Fix warning.

* Remove unwraps.

* Make macro a little less unhygenic.

* Add wasm files.

* candidate statement importing

* import votes on validity

* import availability votes

* candidate receipt type

* make table mod public

* test context for table

* add harness for tests

* some tests for misbehavior

* produce proposal from table

* count candidate issuance as implicit vote

* keep track of messages known by validators

* fix primitives compilation

* simple BFT agreement

* kill unused macro_use annotation

* tests for BFT agreement

* test for not concluding on different prepares

* return summary upon statement import

* accept bft agreement on proposal not locally submitted

* check justification set for BFT

* BFT rewrite: vote accumulator with tests

* squash some warnings

* a few more tests for the accumulator

* add sender to table's signed statement

* implement honest node strategy for BFT

* inex -> index

* import and broadcast lock proofs

* poll repeatedly when state changes

* don't broadcast advance vote immediately if locked

* do not check validity of locked candidate

* basic tests for the strategy

* remove unused context trait and fix warning

* address some review grumbles

* address some more review nits

* fix lock import logic and add a test

* fix spaces

* fix a couple more style grumbles

* more type-safe justifications

* rename Communication enum variants

* improve some panic guard proofs

* add trailing comma