hovering complete template specializations does not show memory layout info

[adenine-dev]

rust-analyzer version: 0.3.1541-standalone (2f1b7ce 2023-06-04)

rustc version: rustc 1.72.0-nightly (a97c36d 2023-06-07)

relevant settings: Check command is clippy, all other RA settings are default.

to replicate:

struct X { // hover over `X` and you get "// size = 8, align = 0x8"
    x: Box<f32>, // hover over `Box`, no layout data
}

I believe this is because the template args are not being taken into account on hover so instead of it being Box<f32> it's just Box. Not sure if this is intended behavior but seems like an oversight to not have that info available.

[Veykril]

it's definitely something we want to support, but that requires some bigger changes. Most of the ide featurse that work in those positions forget about substitutions.

[ChayimFriedman2]

We now only show layout when hovering on definitions to reduce clutter, so we probably don't want this. You can hover over the field name.