Auto merge of rust-lang#13243 - Alexendoo:rustcversion, r=flip1995

Replace `rustc_semver` with `rustc_session::RustcVersion`

Allows dropping a dependency but there is a behaviour change here, the following versions are no longer accepted:

* `1` (would need to be `1.0` or `1.0.0`)
* `1.0.0-alpha`
* `1.0.0-alpha.2`
* `1.0.0-beta`

But this seems unlikely to effect anybody, I did some GitHub searching and found no occurrences outside our UI tests

r? `@flip1995`

changelog: none

Author: bors

clippy_config/Cargo.toml

@@ -7,7 +7,6 @@ edition = "2021"
 
 [dependencies]
 itertools = "0.12"
-rustc-semver = "1.1"
 serde = { version = "1.0", features = ["derive"] }
 toml = "0.7.3"
 

clippy_config/src/lib.rs

@@ -14,6 +14,7 @@
 )]
 
 extern crate rustc_ast;
+extern crate rustc_attr;
 extern crate rustc_data_structures;
 #[allow(unused_extern_crates)]
 extern crate rustc_driver;

clippy_config/src/msrvs.rs

@@ -1,6 +1,6 @@
 use rustc_ast::Attribute;
-use rustc_semver::RustcVersion;
-use rustc_session::Session;
+use rustc_attr::parse_version;
+use rustc_session::{RustcVersion, Session};
 use rustc_span::{sym, Symbol};
 use serde::Deserialize;
 use std::fmt;
@@ -10,7 +10,7 @@ macro_rules! msrv_aliases {
         $($name:ident),* $(,)?
     })*) => {
         $($(
-        pub const $name: RustcVersion = RustcVersion::new($major, $minor, $patch);
+        pub const $name: RustcVersion = RustcVersion { major: $major, minor :$minor, patch: $patch };
         )*)*
     };
 }
@@ -81,9 +81,9 @@ impl<'de> Deserialize<'de> for Msrv {
         D: serde::Deserializer<'de>,
     {
         let v = String::deserialize(deserializer)?;
-        RustcVersion::parse(&v)
+        parse_version(Symbol::intern(&v))
             .map(|v| Msrv { stack: vec![v] })
-            .map_err(|_| serde::de::Error::custom("not a valid Rust version"))
+            .ok_or_else(|| serde::de::Error::custom("not a valid Rust version"))
     }
 }
 
@@ -95,7 +95,7 @@ impl Msrv {
     pub fn read_cargo(&mut self, sess: &Session) {
         let cargo_msrv = std::env::var("CARGO_PKG_RUST_VERSION")
             .ok()
-            .and_then(|v| RustcVersion::parse(&v).ok());
+            .and_then(|v| parse_version(Symbol::intern(&v)));
 
         match (self.current(), cargo_msrv) {
             (None, Some(cargo_msrv)) => self.stack = vec![cargo_msrv],
@@ -115,7 +115,7 @@ impl Msrv {
     }
 
     pub fn meets(&self, required: RustcVersion) -> bool {
-        self.current().map_or(true, |version| version.meets(required))
+        self.current().map_or(true, |msrv| msrv >= required)
     }
 
     fn parse_attr(sess: &Session, attrs: &[Attribute]) -> Option<RustcVersion> {
@@ -131,7 +131,7 @@ impl Msrv {
             }
 
             if let Some(msrv) = msrv_attr.value_str() {
-                if let Ok(version) = RustcVersion::parse(msrv.as_str()) {
+                if let Some(version) = parse_version(msrv) {
                     return Some(version);
                 }
 

clippy_lints/Cargo.toml

@@ -25,7 +25,6 @@ regex = { version = "1.5", optional = true }
 unicode-normalization = "0.1"
 unicode-script = { version = "0.5", default-features = false }
 semver = "1.0"
-rustc-semver = "1.1"
 url = "2.2"
 
 [dev-dependencies]

clippy_lints/src/approx_const.rs

@@ -4,8 +4,7 @@ use clippy_utils::diagnostics::span_lint_and_help;
 use rustc_ast::ast::{FloatTy, LitFloatType, LitKind};
 use rustc_hir::{Expr, ExprKind};
 use rustc_lint::{LateContext, LateLintPass};
-use rustc_semver::RustcVersion;
-use rustc_session::impl_lint_pass;
+use rustc_session::{impl_lint_pass, RustcVersion};
 use rustc_span::symbol;
 use std::f64::consts as f64;
 

clippy_lints/src/incompatible_msrv.rs

@@ -7,8 +7,7 @@ use rustc_data_structures::fx::FxHashMap;
 use rustc_hir::{Expr, ExprKind, HirId};
 use rustc_lint::{LateContext, LateLintPass};
 use rustc_middle::ty::TyCtxt;
-use rustc_semver::RustcVersion;
-use rustc_session::impl_lint_pass;
+use rustc_session::{impl_lint_pass, RustcVersion};
 use rustc_span::def_id::DefId;
 use rustc_span::{ExpnKind, Span};
 
@@ -65,18 +64,18 @@ impl IncompatibleMsrv {
                 StabilityLevel::Stable {
                     since: StableSince::Version(version),
                     ..
-                } => Some(RustcVersion::new(
-                    version.major.into(),
-                    version.minor.into(),
-                    version.patch.into(),
-                )),
+                } => Some(version),
                 _ => None,
             }) {
             version
         } else if let Some(parent_def_id) = tcx.opt_parent(def_id) {
             self.get_def_id_version(tcx, parent_def_id)
         } else {
-            RustcVersion::new(1, 0, 0)
+            RustcVersion {
+                major: 1,
+                minor: 0,
+                patch: 0,
+            }
         };
         self.is_above_msrv.insert(def_id, version);
         version

clippy_lints/src/manual_retain.rs

@@ -9,8 +9,7 @@ use rustc_hir as hir;
 use rustc_hir::def_id::DefId;
 use rustc_hir::ExprKind::Assign;
 use rustc_lint::{LateContext, LateLintPass};
-use rustc_semver::RustcVersion;
-use rustc_session::impl_lint_pass;
+use rustc_session::{impl_lint_pass, RustcVersion};
 use rustc_span::symbol::sym;
 use rustc_span::Span;
 

clippy_lints/src/std_instead_of_core.rs

@@ -9,7 +9,6 @@ use rustc_hir::def_id::DefId;
 use rustc_hir::{HirId, Path, PathSegment};
 use rustc_lint::{LateContext, LateLintPass, LintContext};
 use rustc_middle::lint::in_external_macro;
-use rustc_semver::RustcVersion;
 use rustc_session::impl_lint_pass;
 use rustc_span::symbol::kw;
 use rustc_span::{sym, Span};
@@ -185,9 +184,7 @@ fn is_stable(cx: &LateContext<'_>, mut def_id: DefId, msrv: &Msrv) -> bool {
             } = stability.level
         {
             let stable = match since {
-                StableSince::Version(v) => {
-                    msrv.meets(RustcVersion::new(v.major.into(), v.minor.into(), v.patch.into()))
-                },
+                StableSince::Version(v) => msrv.meets(v),
                 StableSince::Current => msrv.current().is_none(),
                 StableSince::Err => false,
             };

clippy_lints/src/utils/internal_lints/lint_without_lint_pass.rs

@@ -9,7 +9,6 @@ use rustc_hir::intravisit::Visitor;
 use rustc_hir::{ExprKind, HirId, Item, MutTy, Mutability, Path, TyKind};
 use rustc_lint::{LateContext, LateLintPass};
 use rustc_middle::hir::nested_filter;
-use rustc_semver::RustcVersion;
 use rustc_session::impl_lint_pass;
 use rustc_span::source_map::Spanned;
 use rustc_span::symbol::Symbol;
@@ -92,7 +91,12 @@ pub struct LintWithoutLintPass {
     registered_lints: FxHashSet<Symbol>,
 }
 
-impl_lint_pass!(LintWithoutLintPass => [DEFAULT_LINT, LINT_WITHOUT_LINT_PASS, INVALID_CLIPPY_VERSION_ATTRIBUTE, MISSING_CLIPPY_VERSION_ATTRIBUTE]);
+impl_lint_pass!(LintWithoutLintPass => [
+    DEFAULT_LINT,
+    LINT_WITHOUT_LINT_PASS,
+    INVALID_CLIPPY_VERSION_ATTRIBUTE,
+    MISSING_CLIPPY_VERSION_ATTRIBUTE,
+]);
 
 impl<'tcx> LateLintPass<'tcx> for LintWithoutLintPass {
     fn check_item(&mut self, cx: &LateContext<'tcx>, item: &'tcx Item<'_>) {
@@ -220,7 +224,7 @@ fn check_invalid_clippy_version_attribute(cx: &LateContext<'_>, item: &'_ Item<'
             return;
         }
 
-        if RustcVersion::parse(value.as_str()).is_err() {
+        if rustc_attr::parse_version(value).is_none() {
             span_lint_and_help(
                 cx,
                 INVALID_CLIPPY_VERSION_ATTRIBUTE,

clippy_utils/Cargo.toml

@@ -8,7 +8,6 @@ publish = false
 clippy_config = { path = "../clippy_config" }
 arrayvec = { version = "0.7", default-features = false }
 itertools = "0.12"
-rustc-semver = "1.1"
 # FIXME(f16_f128): remove when no longer needed for parsing
 rustc_apfloat = "0.2.0"