Bug: DateTime should implement IntoParam<'_, IReference<DateTime>>

[mbartlett21]

Which crate is this about?

windows

Crate version

0.37.0

Summary

windows::Foundation::DateTime should implement IntoParam<'_, IReference<DateTime>>, so that it can be passed to HttpRequestHeaderCollection::SetDate.

Toolchain version/configuration

Default host: x86_64-pc-windows-msvc
rustup home: C:\Users_.rustup

installed toolchains

nightly-x86_64-pc-windows-msvc (default)

installed targets for active toolchain

x86_64-pc-windows-msvc

active toolchain

nightly-x86_64-pc-windows-msvc (default)
rustc 1.63.0-nightly (99930ac7f 2022-06-11)

Reproducible example

use std::io;

use windows::{Foundation::DateTime, Web::Http::Headers::HttpRequestHeaderCollection};

pub async fn get_string_async(headers: HttpRequestHeaderCollection) -> io::Result<()> {
    let date_time = DateTime {
        UniversalTime: 1576,
    };

    headers.SetDate(&date_time)?;

    Ok(())
}

Crate manifest

# ...

[dependencies.windows]
version = "0.37"
features = [
    "Foundation",
    "Storage_Streams",
    "Web_Http",
    "Web_Http_Headers",
    "Win32_System_WinRT",
]

Expected behavior

The code compiled

Actual behavior

error[E0277]: the trait bound `&DateTime: IntoParam<'_, IReference<DateTime>>` is not satisfied
    --> testing\src\main.rs:10:21
     |
10   |     headers.SetDate(&date_time)?;
     |             ------- ^^^^^^^^^^ the trait `IntoParam<'_, IReference<DateTime>>` is not implemented for `&DateTime`
     |             |
     |             required by a bound introduced by this call
     |
     = help: the following other types implement trait `IntoParam<'a, T>`:
               <&'a AppDataPaths as IntoParam<'a, IInspectable>>
               <&'a AppDataPaths as IntoParam<'a, IUnknown>>
               <&'a ApplicationData as IntoParam<'a, IInspectable>>
               <&'a ApplicationData as IntoParam<'a, IUnknown>>
               <&'a ApplicationDataContainer as IntoParam<'a, IInspectable>>
               <&'a ApplicationDataContainer as IntoParam<'a, IUnknown>>
               <&'a Buffer as IntoParam<'a, IInspectable>>
               <&'a Buffer as IntoParam<'a, IUnknown>>
             and 970 others
note: required by a bound in `HttpRequestHeaderCollection::SetDate`
    --> C:\Users\_\.cargo\registry\src\github.com-1ecc6299db9ec823\windows-0.37.0\src\Windows\Web\Http\Headers\mod.rs:6784:32
     |
6784 | ...aram0: ::windows::core::IntoParam<'a, super::super::super::Foundation::IReference<super::super::super::Foundation::DateTime>>>(&self, ...
     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `HttpRequestHeaderCollection::SetDate`

For more information about this error, try `rustc --explain E0277`.
error: could not compile `testing` due to previous error

Additional comments

Is there anything that I can use without having to implement all 37 methods of IReference myself?

[kennykerr]

Note that #1811 will change the landscape here, but this is also an important scenario to validate. @rylev

Note that the use of IReference<T> here implies the property is optional and can accept a null, logically None, value. Specifically, it should accept Option<T> rather than IntoParam or anything else.

[kennykerr]

Duplicate of #292