rust-clippy/clippy_lints/src/serde_api.rs
xFrednet d647696c1f
Added clippy::version attribute to all normal lints
So, some context for this, well, more a story. I'm not used to scripting, I've never really scripted anything, even if it's a valuable skill. I just never really needed it. Now, `@flip1995` correctly suggested using a script for this in `rust-clippy#7813`...

And I decided to write a script using nushell because why not? This was a mistake... I spend way more time on this than I would like to admit. It has definitely been more than 4 hours. It shouldn't take that long, but me being new to scripting and nushell just wasn't a good mixture... Anyway, here is the script that creates another script which adds the versions. Fun...

Just execute this on the `gh-pages` branch and the resulting `replacer.sh` in `clippy_lints` and it should all work.

```nu
mv v0.0.212 rust-1.00.0;
mv beta rust-1.57.0;
mv master rust-1.58.0;

let paths = (open ./rust-1.58.0/lints.json | select id id_span | flatten | select id path);
let versions = (
    ls | where name =~ "rust-" | select name | format {name}/lints.json |
    each { open $it | select id | insert version $it | str substring "5,11" version} |
    group-by id | rotate counter-clockwise id version |
    update version {get version | first 1} | flatten | select id version);
$paths | each { |row|
    let version = ($versions | where id == ($row.id) | format {version})
    let idu = ($row.id | str upcase)
    $"sed -i '0,/($idu),/{s/pub ($idu),/#[clippy::version = "($version)"]\n    pub ($idu),/}' ($row.path)"
} | str collect ";" | str find-replace --all '1.00.0' 'pre 1.29.0' | save "replacer.sh";
```

And this still has some problems, but at this point I just want to be done -.-
2021-11-10 19:48:31 +01:00

60 lines
2.1 KiB
Rust

use clippy_utils::diagnostics::span_lint;
use clippy_utils::{get_trait_def_id, paths};
use rustc_hir::{Impl, Item, ItemKind};
use rustc_lint::{LateContext, LateLintPass};
use rustc_session::{declare_lint_pass, declare_tool_lint};
declare_clippy_lint! {
/// ### What it does
/// Checks for mis-uses of the serde API.
///
/// ### Why is this bad?
/// Serde is very finnicky about how its API should be
/// used, but the type system can't be used to enforce it (yet?).
///
/// ### Example
/// Implementing `Visitor::visit_string` but not
/// `Visitor::visit_str`.
#[clippy::version = "pre 1.29.0"]
pub SERDE_API_MISUSE,
correctness,
"various things that will negatively affect your serde experience"
}
declare_lint_pass!(SerdeApi => [SERDE_API_MISUSE]);
impl<'tcx> LateLintPass<'tcx> for SerdeApi {
fn check_item(&mut self, cx: &LateContext<'tcx>, item: &'tcx Item<'_>) {
if let ItemKind::Impl(Impl {
of_trait: Some(ref trait_ref),
items,
..
}) = item.kind
{
let did = trait_ref.path.res.def_id();
if let Some(visit_did) = get_trait_def_id(cx, &paths::SERDE_DE_VISITOR) {
if did == visit_did {
let mut seen_str = None;
let mut seen_string = None;
for item in items {
match &*item.ident.as_str() {
"visit_str" => seen_str = Some(item.span),
"visit_string" => seen_string = Some(item.span),
_ => {},
}
}
if let Some(span) = seen_string {
if seen_str.is_none() {
span_lint(
cx,
SERDE_API_MISUSE,
span,
"you should not implement `visit_string` without also implementing `visit_str`",
);
}
}
}
}
}
}
}