mirror of
https://github.com/roc-lang/roc.git
synced 2025-12-04 00:55:00 +00:00
a53da2bc24
A "late specialization" of a type is an ability specialization that
is not visible or needed until after type-specialization; i.e. during
monomorphization.
The `Inspect.toInspector` ability is special-cased for opaques that do
not claim or explicitly implement `Inspect`. In such cases, they are
treated as structural types, and given the immediate specialization of
`Inpect.inspectOpaque`.
However, prior to this commit, that special-casing would only be applied
during early specialiation (i.e. specializations visible during
generalized type inference). This commit applies the special case to
late specialization as well - the specialization decision for an opaque
type is always the specialization of the opaque type in the late case,
but now, when we go to look up the ambient lambda set of the
specialization, if it does not exist and corresponds to
`Inspect.toInspector`, we fall back to the immediate.
One concern I have here is that in a case like
```
Op := {}
x =
dbg (@Op {})
```
the specialization of `Inspect.toInspector` for `Op` should be known
early. Indeed, the program
```
Op := {}
x =
Inspect.toInspector (@Op {}) |> Inspect.apply (Inspect.init {}) |> Inspect.toDbgStr
```
Compiles fine without this change. This makes me suspect there is an
issue with the implementation of `dbg`'s desugaring. If possible, this
should be addressed sooner rather than later.
Closes #6127
|
||
|---|---|---|
| .. | ||
| benches | ||
| src | ||
| .gitignore | ||
| build.rs | ||
| Cargo.toml | ||
| README.md | ||
Running our CodeGen tests
Our code generation tests are all in this crate. Feature flags are used to run the tests with a specific backend. For convenience, some aliases are added in .cargo/config:
[alias]
test-gen-llvm = "test -p test_gen"
test-gen-dev = "test -p test_gen --no-default-features --features gen-dev"
test-gen-wasm = "test -p test_gen --no-default-features --features gen-wasm"
So we can run:
cargo test-gen-llvm
To run the gen tests with the LLVM backend. To filter tests, append a filter like so:
> cargo test-gen-wasm wasm_str::small
Finished test [unoptimized + debuginfo] target(s) in 0.13s
Running src/tests.rs (target/debug/deps/test_gen-b4ad63a9dd50f050)
running 2 tests
test wasm_str::small_str_literal ... ok
test wasm_str::small_str_zeroed_literal ... ok