Commit Graph

3 Commits

Author SHA1 Message Date
Alex Crichton
420dcd76fd Don't require Store in Instance constructor (#810)
* Don't require `Store` in `Instance` constructor

This can be inferred from the `Module` argument. Additionally add a
`store` accessor to an `Instance` in case it's needed to instantiate
another `Module`.

cc #708

* Update more constructors

* Fix a doctest

* Don't ignore store in `wasm_instance_new`

* Run rustfmt
2020-01-13 17:50:57 -06:00
Alex Crichton
6571fb8f4f Remove HostRef from the wasmtime public API (#788)
* Remove `HostRef` from the `wasmtime` public API

This commit removes all remaining usages of `HostRef` in the public API
of the `wasmtime` crate. This involved a number of API decisions such
as:

* None of `Func`, `Global`, `Table`, or `Memory` are wrapped in `HostRef`
* All of `Func`, `Global`, `Table`, and `Memory` implement `Clone` now.
* Methods called `type` are renamed to `ty` to avoid typing `r#type`.
* Methods requiring mutability for external items now no longer require
  mutability. The mutable reference here is sort of a lie anyway since
  the internals are aliased by the underlying module anyway. This
  affects:
  * `Table::set`
  * `Table::grow`
  * `Memory::grow`
  * `Instance::set_signal_handler`
* The `Val::FuncRef` type is now no longer automatically coerced to
  `AnyRef`. This is technically a breaking change which is pretty bad,
  but I'm hoping that we can live with this interim state while we sort
  out the `AnyRef` story in general.
* The implementation of the C API was refactored and updated in a few
  locations to account for these changes:
  * Accessing the exports of an instance are now cached to ensure we
    always hand out the same `HostRef` values.
  * `wasm_*_t` for external values no longer have internal cache,
    instead they all wrap `wasm_external_t` and have an unchecked
    accessor for the underlying variant (since the type is proof that
    it's there). This makes casting back and forth much more trivial.

This is all related to #708 and while there's still more work to be done
in terms of documentation, this is the major bulk of the rest of the
implementation work on #708 I believe.

* More API updates

* Run rustfmt

* Fix a doc test

* More test updates
2020-01-10 10:42:14 -06:00
Alex Crichton
41780fb1a6 Handle same-named imports with different signatures
This commit fixes the `wasmtime::Instance` instantiation API when
imports have the same name but might be imported under different types.
This is handled in the API by listing imports as a list instead of as a
name map, but they were interpreted as a name map under the hood causing
collisions.

This commit now keeps track of the index used to define each import, and
the index is passed through in the `Resolver`. Existing implementaitons
of `Resolver` all ignore this, but the API now uses it exclusivley to
match up `Extern` definitions to imports.
2020-01-09 17:21:19 -08:00