introduce fcw macro

Author: jdonszelmann

compiler/rustc_lint/src/builtin.rs

@@ -35,9 +35,9 @@ use rustc_middle::lint::LevelAndSource;
 use rustc_middle::ty::layout::LayoutOf;
 use rustc_middle::ty::print::with_no_trimmed_paths;
 use rustc_middle::ty::{self, AssocContainer, Ty, TyCtxt, TypeVisitableExt, Upcast, VariantDef};
-use rustc_session::lint::FutureIncompatibilityReason;
 // hardwired lints from rustc_lint_defs
 pub use rustc_session::lint::builtin::*;
+use rustc_session::lint::fcw;
 use rustc_session::{declare_lint, declare_lint_pass, impl_lint_pass};
 use rustc_span::edition::Edition;
 use rustc_span::source_map::Spanned;
@@ -777,8 +777,7 @@ declare_lint! {
     Warn,
     "detects anonymous parameters",
     @future_incompatible = FutureIncompatibleInfo {
-        reason: FutureIncompatibilityReason::EditionError(Edition::Edition2018),
-        reference: "issue #41686 <https://github.com/rust-lang/rust/issues/41686>",
+        reason: fcw!(EditionError 2018 "trait-fn-parameters"),
     };
 }
 
@@ -1664,8 +1663,7 @@ declare_lint! {
     Warn,
     "`...` range patterns are deprecated",
     @future_incompatible = FutureIncompatibleInfo {
-        reason: FutureIncompatibilityReason::EditionError(Edition::Edition2021),
-        reference: "<https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>",
+        reason: fcw!(EditionError 2021 "warnings-promoted-to-error"),
     };
 }
 
@@ -1800,8 +1798,7 @@ declare_lint! {
     Allow,
     "detects edition keywords being used as an identifier",
     @future_incompatible = FutureIncompatibleInfo {
-        reason: FutureIncompatibilityReason::EditionError(Edition::Edition2018),
-        reference: "issue #49716 <https://github.com/rust-lang/rust/issues/49716>",
+        reason: fcw!(EditionError 2018 "new-keywords"),
     };
 }
 
@@ -1845,8 +1842,7 @@ declare_lint! {
     Allow,
     "detects edition keywords being used as an identifier",
     @future_incompatible = FutureIncompatibleInfo {
-        reason: FutureIncompatibilityReason::EditionError(Edition::Edition2024),
-        reference: "<https://doc.rust-lang.org/edition-guide/rust-2024/gen-keyword.html>",
+        reason: fcw!(EditionError 2024 "gen-keyword"),
     };
 }
 

compiler/rustc_lint/src/if_let_rescope.rs

@@ -11,9 +11,8 @@ use rustc_middle::ty::significant_drop_order::{
     extract_component_with_significant_dtor, ty_dtor_span,
 };
 use rustc_middle::ty::{self, Ty, TyCtxt};
-use rustc_session::lint::{FutureIncompatibilityReason, LintId};
+use rustc_session::lint::{LintId, fcw};
 use rustc_session::{declare_lint, impl_lint_pass};
-use rustc_span::edition::Edition;
 use rustc_span::{DUMMY_SP, Span};
 use smallvec::SmallVec;
 
@@ -86,8 +85,7 @@ declare_lint! {
     "`if let` assigns a shorter lifetime to temporary values being pattern-matched against in Edition 2024 and \
     rewriting in `match` is an option to preserve the semantics up to Edition 2021",
     @future_incompatible = FutureIncompatibleInfo {
-        reason: FutureIncompatibilityReason::EditionSemanticsChange(Edition::Edition2024),
-        reference: "<https://doc.rust-lang.org/edition-guide/rust-2024/temporary-if-let-scope.html>",
+        reason: fcw!(EditionSemanticsChange 2024 "temporary-if-let-scope"),
     };
 }
 

compiler/rustc_lint/src/impl_trait_overcaptures.rs

@@ -19,9 +19,8 @@ use rustc_middle::ty::{
     self, Ty, TyCtxt, TypeSuperVisitable, TypeVisitable, TypeVisitableExt, TypeVisitor,
 };
 use rustc_middle::{bug, span_bug};
-use rustc_session::lint::FutureIncompatibilityReason;
+use rustc_session::lint::fcw;
 use rustc_session::{declare_lint, declare_lint_pass};
-use rustc_span::edition::Edition;
 use rustc_span::{Span, Symbol};
 use rustc_trait_selection::errors::{
     AddPreciseCapturingForOvercapture, impl_trait_overcapture_suggestion,
@@ -71,8 +70,7 @@ declare_lint! {
     Allow,
     "`impl Trait` will capture more lifetimes than possibly intended in edition 2024",
     @future_incompatible = FutureIncompatibleInfo {
-        reason: FutureIncompatibilityReason::EditionSemanticsChange(Edition::Edition2024),
-        reference: "<https://doc.rust-lang.org/edition-guide/rust-2024/rpit-lifetime-capture.html>",
+        reason: fcw!(EditionSemanticsChange 2024 "rpit-lifetime-capture"),
     };
 }
 

compiler/rustc_lint/src/macro_expr_fragment_specifier_2024_migration.rs

@@ -2,7 +2,7 @@
 
 use rustc_ast::token::{Token, TokenKind};
 use rustc_ast::tokenstream::{TokenStream, TokenTree};
-use rustc_session::lint::FutureIncompatibilityReason;
+use rustc_session::lint::fcw;
 use rustc_session::{declare_lint, declare_lint_pass};
 use rustc_span::edition::Edition;
 use rustc_span::sym;
@@ -72,8 +72,7 @@ declare_lint! {
     "The `expr` fragment specifier will accept more expressions in the 2024 edition. \
     To keep the existing behavior, use the `expr_2021` fragment specifier.",
     @future_incompatible = FutureIncompatibleInfo {
-        reason: FutureIncompatibilityReason::EditionSemanticsChange(Edition::Edition2024),
-        reference: "Migration Guide <https://doc.rust-lang.org/edition-guide/rust-2024/macro-fragment-specifiers.html>",
+        reason: fcw!(EditionSemanticsChange 2024 "macro-fragment-specifiers"),
     };
 }
 

compiler/rustc_lint/src/non_fmt_panic.rs

@@ -4,9 +4,8 @@ use rustc_hir::{self as hir, LangItem};
 use rustc_infer::infer::TyCtxtInferExt;
 use rustc_middle::{bug, ty};
 use rustc_parse_format::{ParseMode, Parser, Piece};
-use rustc_session::lint::FutureIncompatibilityReason;
+use rustc_session::lint::fcw;
 use rustc_session::{declare_lint, declare_lint_pass};
-use rustc_span::edition::Edition;
 use rustc_span::{InnerSpan, Span, Symbol, hygiene, sym};
 use rustc_trait_selection::infer::InferCtxtExt;
 
@@ -38,7 +37,7 @@ declare_lint! {
     Warn,
     "detect single-argument panic!() invocations in which the argument is not a format string",
     @future_incompatible = FutureIncompatibleInfo {
-        reason: FutureIncompatibilityReason::EditionSemanticsChange(Edition::Edition2021),
+        reason: fcw!(EditionSemanticsChange 2021 "panic-macro-consistency"),
         explain_reason: false,
     };
     report_in_external_macro

compiler/rustc_lint/src/shadowed_into_iter.rs

@@ -1,8 +1,7 @@
 use rustc_hir::{self as hir, LangItem};
 use rustc_middle::ty::{self, Ty};
-use rustc_session::lint::FutureIncompatibilityReason;
+use rustc_session::lint::fcw;
 use rustc_session::{declare_lint, impl_lint_pass};
-use rustc_span::edition::Edition;
 
 use crate::lints::{ShadowedIntoIterDiag, ShadowedIntoIterDiagSub};
 use crate::{LateContext, LateLintPass, LintContext};
@@ -31,8 +30,7 @@ declare_lint! {
     Warn,
     "detects calling `into_iter` on arrays in Rust 2015 and 2018",
     @future_incompatible = FutureIncompatibleInfo {
-        reason: FutureIncompatibilityReason::EditionSemanticsChange(Edition::Edition2021),
-        reference: "<https://doc.rust-lang.org/edition-guide/rust-2021/IntoIterator-for-arrays.html>",
+        reason: fcw!(EditionSemanticsChange 2021 "IntoIterator-for-arrays"),
     };
 }
 
@@ -60,8 +58,7 @@ declare_lint! {
     Warn,
     "detects calling `into_iter` on boxed slices in Rust 2015, 2018, and 2021",
     @future_incompatible = FutureIncompatibleInfo {
-        reason: FutureIncompatibilityReason::EditionSemanticsChange(Edition::Edition2024),
-        reference: "<https://doc.rust-lang.org/edition-guide/rust-2024/intoiterator-box-slice.html>"
+        reason: fcw!(EditionSemanticsChange 2024 "intoiterator-box-slice"),
     };
 }
 

compiler/rustc_lint/src/static_mut_refs.rs

@@ -1,9 +1,8 @@
 use rustc_hir as hir;
 use rustc_hir::{Expr, Stmt};
 use rustc_middle::ty::{Mutability, TyKind};
-use rustc_session::lint::FutureIncompatibilityReason;
+use rustc_session::lint::fcw;
 use rustc_session::{declare_lint, declare_lint_pass};
-use rustc_span::edition::Edition;
 use rustc_span::{BytePos, Span};
 
 use crate::lints::{MutRefSugg, RefOfMutStatic};
@@ -53,8 +52,7 @@ declare_lint! {
     Warn,
     "creating a shared reference to mutable static",
     @future_incompatible = FutureIncompatibleInfo {
-        reason: FutureIncompatibilityReason::EditionError(Edition::Edition2024),
-        reference: "<https://doc.rust-lang.org/edition-guide/rust-2024/static-mut-references.html>",
+        reason: fcw!(EditionError 2024 "static-mut-references"),
         explain_reason: false,
     };
     @edition Edition2024 => Deny;