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Remove _ from UnpinStruct #70

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Remove _ from UnpinStruct #70

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taiki-e
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@taiki-e taiki-e commented Sep 4, 2019

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👍 wonder if we could provide the option to name it to a custom name.

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taiki-e commented Sep 4, 2019

@LucioFranco

👍 wonder if we could provide the option to name it to a custom name.

Looks like a good idea.

Probably like this?

#[pin_project(unpin_docs = MyUnpinStructName)]
struct Foo<T, U> {
    #[pin]
    pinned: T,
    unpinned: U,
}

(Note: Once rust-lang/rust#48054 is implemented and stabilized, these documents will not be generated, but the options themselves will be maintained for compatibility.)

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@taiki-e seems reasonable!

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I didn't even realize that it exports a new type. Could it be doc(hidden), or even better, not pub?

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taiki-e commented Sep 4, 2019

@seanmonstar
I'm sorry. There is certainly a lack of documentation on this behavior.
This is intended to avoid the issue that cannot know the actual trait implementation bounds of the Unpin implementation from the document of generated code. And a way to opt-out of this was added in #62.

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taiki-e commented Sep 4, 2019

I am considering disabling this by default.
This is because the current way is that if the struct is declared in a public module, UnpinStruct is displayed, but if it is declared in a private module, there is a discrepancy that UnpinStruct does not appear in the document.

cc @Aaron1011

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taiki-e commented Sep 4, 2019

It should also be a problem that items that are not declared by the user appear in the document without permission.

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taiki-e commented Sep 4, 2019

Closing this in favor of #71.

@taiki-e taiki-e closed this Sep 4, 2019
@taiki-e taiki-e deleted the docs branch September 4, 2019 21:02
bors bot added a commit that referenced this pull request Sep 4, 2019
71: Do not display UnpinStruct in the document by default r=taiki-e a=taiki-e

There are some problems as mentioned in #70 

This causes the problem that by default the actual Unpin bounds cannot be known from the document if the original struct/enum itself is public (see #53 (comment) and rust-lang/rust#63281 for more).

This can be enabled using `--cfg pin_project_show_unpin_struct` in RUSTFLAGS.

```toml
# in Cargo.toml
[package.metadata.docs.rs]
rustdoc-args = ["--cfg", "pin_project_show_unpin_struct"]
```

cc @Aaron1011 @seanmonstar @LucioFranco

Co-authored-by: Taiki Endo <te316e89@gmail.com>
@taiki-e taiki-e added the A-pin-projection Area: #[pin_project] label Jun 4, 2020
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