Auto merge of #104863 - nnethercote:reduce-lint-macros, r=cjgillot

Reduce macro usage for lints

r? `@cjgillot`

Author: bors

compiler/rustc_driver/src/lib.rs

@@ -245,10 +245,8 @@ fn run_compiler(
                 interface::run_compiler(config, |compiler| {
                     let sopts = &compiler.session().opts;
                     if sopts.describe_lints {
-                        let mut lint_store = rustc_lint::new_lint_store(
-                            sopts.unstable_opts.no_interleave_lints,
-                            compiler.session().enable_internal_lints(),
-                        );
+                        let mut lint_store =
+                            rustc_lint::new_lint_store(compiler.session().enable_internal_lints());
                         let registered_lints =
                             if let Some(register_lints) = compiler.register_lints() {
                                 register_lints(compiler.session(), &mut lint_store);

compiler/rustc_interface/src/passes.rs

@@ -207,10 +207,7 @@ pub fn register_plugins<'a>(
         });
     }
 
-    let mut lint_store = rustc_lint::new_lint_store(
-        sess.opts.unstable_opts.no_interleave_lints,
-        sess.enable_internal_lints(),
-    );
+    let mut lint_store = rustc_lint::new_lint_store(sess.enable_internal_lints());
     register_lints(sess, &mut lint_store);
 
     let registrars =

compiler/rustc_interface/src/tests.rs

@@ -666,7 +666,6 @@ fn test_unstable_options_tracking_hash() {
     untracked!(mir_pretty_relative_line_numbers, true);
     untracked!(nll_facts, true);
     untracked!(no_analysis, true);
-    untracked!(no_interleave_lints, true);
     untracked!(no_leak_check, true);
     untracked!(no_parallel_llvm, true);
     untracked!(parse_only, true);

compiler/rustc_lint/src/early.rs

@@ -25,8 +25,6 @@ use rustc_session::Session;
 use rustc_span::symbol::Ident;
 use rustc_span::Span;
 
-use std::slice;
-
 macro_rules! run_early_pass { ($cx:expr, $f:ident, $($args:expr),*) => ({
     $cx.pass.$f(&$cx.context, $($args),*);
 }) }
@@ -300,20 +298,14 @@ impl LintPass for EarlyLintPassObjects<'_> {
     }
 }
 
-macro_rules! expand_early_lint_pass_impl_methods {
-    ([$($(#[$attr:meta])* fn $name:ident($($param:ident: $arg:ty),*);)*]) => (
-        $(fn $name(&mut self, context: &EarlyContext<'_>, $($param: $arg),*) {
-            for obj in self.lints.iter_mut() {
-                obj.$name(context, $($param),*);
-            }
-        })*
-    )
-}
-
 macro_rules! early_lint_pass_impl {
-    ([], [$($methods:tt)*]) => (
+    ([], [$($(#[$attr:meta])* fn $name:ident($($param:ident: $arg:ty),*);)*]) => (
         impl EarlyLintPass for EarlyLintPassObjects<'_> {
-            expand_early_lint_pass_impl_methods!([$($methods)*]);
+            $(fn $name(&mut self, context: &EarlyContext<'_>, $($param: $arg),*) {
+                for obj in self.lints.iter_mut() {
+                    obj.$name(context, $($param),*);
+                }
+            })*
         }
     )
 }
@@ -371,87 +363,36 @@ impl<'a> EarlyCheckNode<'a> for (ast::NodeId, &'a [ast::Attribute], &'a [P<ast::
     }
 }
 
-fn early_lint_node<'a>(
-    sess: &Session,
-    warn_about_weird_lints: bool,
-    lint_store: &LintStore,
-    registered_tools: &RegisteredTools,
-    buffered: LintBuffer,
-    pass: impl EarlyLintPass,
-    check_node: impl EarlyCheckNode<'a>,
-) -> LintBuffer {
-    let mut cx = EarlyContextAndPass {
-        context: EarlyContext::new(
-            sess,
-            warn_about_weird_lints,
-            lint_store,
-            registered_tools,
-            buffered,
-        ),
-        pass,
-    };
-
-    cx.with_lint_attrs(check_node.id(), check_node.attrs(), |cx| check_node.check(cx));
-    cx.context.buffered
-}
-
 pub fn check_ast_node<'a>(
     sess: &Session,
     pre_expansion: bool,
     lint_store: &LintStore,
     registered_tools: &RegisteredTools,
     lint_buffer: Option<LintBuffer>,
-    builtin_lints: impl EarlyLintPass,
+    builtin_lints: impl EarlyLintPass + 'static,
     check_node: impl EarlyCheckNode<'a>,
 ) {
     let passes =
         if pre_expansion { &lint_store.pre_expansion_passes } else { &lint_store.early_passes };
     let mut passes: Vec<_> = passes.iter().map(|p| (p)()).collect();
-    let mut buffered = lint_buffer.unwrap_or_default();
-
-    if sess.opts.unstable_opts.no_interleave_lints {
-        for (i, pass) in passes.iter_mut().enumerate() {
-            buffered =
-                sess.prof.verbose_generic_activity_with_arg("run_lint", pass.name()).run(|| {
-                    early_lint_node(
-                        sess,
-                        !pre_expansion && i == 0,
-                        lint_store,
-                        registered_tools,
-                        buffered,
-                        EarlyLintPassObjects { lints: slice::from_mut(pass) },
-                        check_node,
-                    )
-                });
-        }
-    } else {
-        buffered = early_lint_node(
+    passes.push(Box::new(builtin_lints));
+
+    let mut cx = EarlyContextAndPass {
+        context: EarlyContext::new(
             sess,
             !pre_expansion,
             lint_store,
             registered_tools,
-            buffered,
-            builtin_lints,
-            check_node,
-        );
-
-        if !passes.is_empty() {
-            buffered = early_lint_node(
-                sess,
-                false,
-                lint_store,
-                registered_tools,
-                buffered,
-                EarlyLintPassObjects { lints: &mut passes[..] },
-                check_node,
-            );
-        }
-    }
+            lint_buffer.unwrap_or_default(),
+        ),
+        pass: EarlyLintPassObjects { lints: &mut passes[..] },
+    };
+    cx.with_lint_attrs(check_node.id(), check_node.attrs(), |cx| check_node.check(cx));
 
     // All of the buffered lints should have been emitted at this point.
     // If not, that means that we somehow buffered a lint for a node id
     // that was not lint-checked (perhaps it doesn't exist?). This is a bug.
-    for (id, lints) in buffered.map {
+    for (id, lints) in cx.context.buffered.map {
         for early_lint in lints {
             sess.delay_span_bug(
                 early_lint.span,

compiler/rustc_lint/src/late.rs

@@ -28,7 +28,6 @@ use rustc_span::Span;
 
 use std::any::Any;
 use std::cell::Cell;
-use std::slice;
 
 /// Extract the `LintStore` from the query context.
 /// This function exists because we've erased `LintStore` as `dyn Any` in the context.
@@ -313,45 +312,42 @@ impl LintPass for LateLintPassObjects<'_, '_> {
     }
 }
 
-macro_rules! expand_late_lint_pass_impl_methods {
-    ([$hir:tt], [$($(#[$attr:meta])* fn $name:ident($($param:ident: $arg:ty),*);)*]) => (
-        $(fn $name(&mut self, context: &LateContext<$hir>, $($param: $arg),*) {
-            for obj in self.lints.iter_mut() {
-                obj.$name(context, $($param),*);
-            }
-        })*
-    )
-}
-
 macro_rules! late_lint_pass_impl {
-    ([], [$hir:tt], $methods:tt) => {
+    ([], [$hir:tt], [$($(#[$attr:meta])* fn $name:ident($($param:ident: $arg:ty),*);)*]) => {
         impl<$hir> LateLintPass<$hir> for LateLintPassObjects<'_, $hir> {
-            expand_late_lint_pass_impl_methods!([$hir], $methods);
+            $(fn $name(&mut self, context: &LateContext<$hir>, $($param: $arg),*) {
+                for obj in self.lints.iter_mut() {
+                    obj.$name(context, $($param),*);
+                }
+            })*
         }
     };
 }
 
 crate::late_lint_methods!(late_lint_pass_impl, [], ['tcx]);
 
-fn late_lint_mod_pass<'tcx, T: LateLintPass<'tcx>>(
+pub(super) fn late_lint_mod<'tcx, T: LateLintPass<'tcx> + 'tcx>(
     tcx: TyCtxt<'tcx>,
     module_def_id: LocalDefId,
-    pass: T,
+    builtin_lints: T,
 ) {
-    let effective_visibilities = &tcx.effective_visibilities(());
-
     let context = LateContext {
         tcx,
         enclosing_body: None,
         cached_typeck_results: Cell::new(None),
         param_env: ty::ParamEnv::empty(),
-        effective_visibilities,
+        effective_visibilities: &tcx.effective_visibilities(()),
         lint_store: unerased_lint_store(tcx),
         last_node_with_lint_attrs: tcx.hir().local_def_id_to_hir_id(module_def_id),
         generics: None,
         only_module: true,
     };
 
+    let mut passes: Vec<_> =
+        unerased_lint_store(tcx).late_module_passes.iter().map(|pass| (pass)(tcx)).collect();
+    passes.push(Box::new(builtin_lints));
+    let pass = LateLintPassObjects { lints: &mut passes[..] };
+
     let mut cx = LateContextAndPass { context, pass };
 
     let (module, _span, hir_id) = tcx.hir().get_module(module_def_id);
@@ -365,46 +361,29 @@ fn late_lint_mod_pass<'tcx, T: LateLintPass<'tcx>>(
     }
 }
 
-pub fn late_lint_mod<'tcx, T: LateLintPass<'tcx>>(
-    tcx: TyCtxt<'tcx>,
-    module_def_id: LocalDefId,
-    builtin_lints: T,
-) {
-    if tcx.sess.opts.unstable_opts.no_interleave_lints {
-        // These passes runs in late_lint_crate with -Z no_interleave_lints
-        return;
-    }
-
-    late_lint_mod_pass(tcx, module_def_id, builtin_lints);
-
-    let mut passes: Vec<_> =
-        unerased_lint_store(tcx).late_module_passes.iter().map(|pass| (pass)(tcx)).collect();
-
-    if !passes.is_empty() {
-        late_lint_mod_pass(tcx, module_def_id, LateLintPassObjects { lints: &mut passes[..] });
-    }
-}
-
-fn late_lint_pass_crate<'tcx, T: LateLintPass<'tcx>>(tcx: TyCtxt<'tcx>, pass: T) {
-    let effective_visibilities = &tcx.effective_visibilities(());
-
+fn late_lint_crate<'tcx, T: LateLintPass<'tcx> + 'tcx>(tcx: TyCtxt<'tcx>, builtin_lints: T) {
     let context = LateContext {
         tcx,
         enclosing_body: None,
         cached_typeck_results: Cell::new(None),
         param_env: ty::ParamEnv::empty(),
-        effective_visibilities,
+        effective_visibilities: &tcx.effective_visibilities(()),
         lint_store: unerased_lint_store(tcx),
         last_node_with_lint_attrs: hir::CRATE_HIR_ID,
         generics: None,
         only_module: false,
     };
 
+    let mut passes =
+        unerased_lint_store(tcx).late_passes.iter().map(|p| (p)(tcx)).collect::<Vec<_>>();
+    passes.push(Box::new(builtin_lints));
+    let pass = LateLintPassObjects { lints: &mut passes[..] };
+
     let mut cx = LateContextAndPass { context, pass };
 
     // Visit the whole crate.
     cx.with_lint_attrs(hir::CRATE_HIR_ID, |cx| {
-        // since the root module isn't visited as an item (because it isn't an
+        // Since the root module isn't visited as an item (because it isn't an
         // item), warn for it here.
         lint_callback!(cx, check_crate,);
         tcx.hir().walk_toplevel_module(cx);
@@ -413,41 +392,8 @@ fn late_lint_pass_crate<'tcx, T: LateLintPass<'tcx>>(tcx: TyCtxt<'tcx>, pass: T)
     })
 }
 
-fn late_lint_crate<'tcx, T: LateLintPass<'tcx>>(tcx: TyCtxt<'tcx>, builtin_lints: T) {
-    let mut passes =
-        unerased_lint_store(tcx).late_passes.iter().map(|p| (p)(tcx)).collect::<Vec<_>>();
-
-    if !tcx.sess.opts.unstable_opts.no_interleave_lints {
-        if !passes.is_empty() {
-            late_lint_pass_crate(tcx, LateLintPassObjects { lints: &mut passes[..] });
-        }
-
-        late_lint_pass_crate(tcx, builtin_lints);
-    } else {
-        for pass in &mut passes {
-            tcx.sess.prof.verbose_generic_activity_with_arg("run_late_lint", pass.name()).run(
-                || {
-                    late_lint_pass_crate(tcx, LateLintPassObjects { lints: slice::from_mut(pass) });
-                },
-            );
-        }
-
-        let mut passes: Vec<_> =
-            unerased_lint_store(tcx).late_module_passes.iter().map(|pass| (pass)(tcx)).collect();
-
-        for pass in &mut passes {
-            tcx.sess
-                .prof
-                .verbose_generic_activity_with_arg("run_late_module_lint", pass.name())
-                .run(|| {
-                    late_lint_pass_crate(tcx, LateLintPassObjects { lints: slice::from_mut(pass) });
-                });
-        }
-    }
-}
-
 /// Performs lint checking on a crate.
-pub fn check_crate<'tcx, T: LateLintPass<'tcx>>(
+pub fn check_crate<'tcx, T: LateLintPass<'tcx> + 'tcx>(
     tcx: TyCtxt<'tcx>,
     builtin_lints: impl FnOnce() -> T + Send,
 ) {