Process all format-like macros

Remove the `is_format_macro()` function and calls to it because now it seems to be working just fine without it, properly handling all other use cases, such as `log::warn!(...)`

Author: nyurik

clippy_dev/src/new_lint.rs

@@ -368,9 +368,7 @@ fn create_lint_for_ty(lint: &LintData<'_>, enable_msrv: bool, ty: &str) -> io::R
                     }}
                     todo!();
                 }}
-           "#,
-            context_import = context_import,
-            name_upper = name_upper,
+           "#
         );
     } else {
         let _ = writedoc!(
@@ -384,9 +382,7 @@ fn create_lint_for_ty(lint: &LintData<'_>, enable_msrv: bool, ty: &str) -> io::R
                 pub(super) fn check(cx: &{context_import}) {{
                     todo!();
                 }}
-           "#,
-            context_import = context_import,
-            name_upper = name_upper,
+           "#
         );
     }
 

clippy_dev/src/update_lints.rs

@@ -537,17 +537,13 @@ fn declare_deprecated(name: &str, path: &Path, reason: &str) -> io::Result<()> {
             /// Nothing. This lint has been deprecated.
             ///
             /// ### Deprecation reason
-            /// {}
-            #[clippy::version = \"{}\"]
-            pub {},
-            \"{}\"
+            /// {deprecation_reason}
+            #[clippy::version = \"{version}\"]
+            pub {name},
+            \"{reason}\"
         }}
 
-        ",
-        deprecation_reason,
-        version,
-        name,
-        reason,
+        "
     )
 }
 

clippy_lints/src/format_args.rs

@@ -2,7 +2,7 @@ use clippy_utils::diagnostics::{span_lint_and_sugg, span_lint_and_then};
 use clippy_utils::is_diag_trait_item;
 use clippy_utils::macros::FormatParamKind::{Implicit, Named, Numbered, Starred};
 use clippy_utils::macros::{
-    is_format_macro, is_panic, root_macro_call, Count, FormatArg, FormatArgsExpn, FormatParam, FormatParamUsage,
+    is_panic, root_macro_call, Count, FormatArg, FormatArgsExpn, FormatParam, FormatParamUsage,
 };
 use clippy_utils::msrvs::{self, Msrv};
 use clippy_utils::source::snippet_opt;
@@ -177,7 +177,6 @@ impl<'tcx> LateLintPass<'tcx> for FormatArgs {
             && let expr_expn_data = expr.span.ctxt().outer_expn_data()
             && let outermost_expn_data = outermost_expn_data(expr_expn_data)
             && let Some(macro_def_id) = outermost_expn_data.macro_def_id
-            && is_format_macro(cx, macro_def_id)
             && let ExpnKind::Macro(_, name) = outermost_expn_data.kind
         {
             for arg in &format_args.args {

clippy_lints/src/format_impl.rs

@@ -1,5 +1,5 @@
 use clippy_utils::diagnostics::{span_lint, span_lint_and_sugg};
-use clippy_utils::macros::{is_format_macro, root_macro_call_first_node, FormatArg, FormatArgsExpn};
+use clippy_utils::macros::{root_macro_call_first_node, FormatArg, FormatArgsExpn};
 use clippy_utils::{get_parent_as_impl, is_diag_trait_item, path_to_local, peel_ref_operators};
 use if_chain::if_chain;
 use rustc_errors::Applicability;
@@ -165,9 +165,7 @@ fn check_self_in_format_args<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>,
     // Check each arg in format calls - do we ever use Display on self (directly or via deref)?
     if_chain! {
         if let Some(outer_macro) = root_macro_call_first_node(cx, expr);
-        if let macro_def_id = outer_macro.def_id;
         if let Some(format_args) = FormatArgsExpn::find_nested(cx, expr, outer_macro.expn);
-        if is_format_macro(cx, macro_def_id);
         then {
             for arg in format_args.args {
                 if arg.format.r#trait != impl_trait.name {

clippy_utils/src/macros.rs

@@ -19,33 +19,6 @@ use rustc_span::{sym, BytePos, ExpnData, ExpnId, ExpnKind, Pos, Span, SpanData,
 use std::iter::{once, zip};
 use std::ops::ControlFlow;
 
-const FORMAT_MACRO_DIAG_ITEMS: &[Symbol] = &[
-    sym::assert_eq_macro,
-    sym::assert_macro,
-    sym::assert_ne_macro,
-    sym::debug_assert_eq_macro,
-    sym::debug_assert_macro,
-    sym::debug_assert_ne_macro,
-    sym::eprint_macro,
-    sym::eprintln_macro,
-    sym::format_args_macro,
-    sym::format_macro,
-    sym::print_macro,
-    sym::println_macro,
-    sym::std_panic_macro,
-    sym::write_macro,
-    sym::writeln_macro,
-];
-
-/// Returns true if a given Macro `DefId` is a format macro (e.g. `println!`)
-pub fn is_format_macro(cx: &LateContext<'_>, macro_def_id: DefId) -> bool {
-    if let Some(name) = cx.tcx.get_diagnostic_name(macro_def_id) {
-        FORMAT_MACRO_DIAG_ITEMS.contains(&name)
-    } else {
-        false
-    }
-}
-
 /// A macro call, like `vec![1, 2, 3]`.
 ///
 /// Use `tcx.item_name(macro_call.def_id)` to get the macro name.

tests/ui/uninlined_format_args.fixed

@@ -121,8 +121,8 @@ fn tester(fn_arg: i32) {
     println!("{local_i32:width$.prec$}");
     println!("{width:width$.prec$}");
     println!("{}", format!("{local_i32}"));
-    my_println!("{}", local_i32);
-    my_println_args!("{}", local_i32);
+    my_println!("{local_i32}");
+    my_println_args!("{local_i32}");
 
     // these should NOT be modified by the lint
     println!(concat!("nope ", "{}"), local_i32);
@@ -160,10 +160,6 @@ fn tester(fn_arg: i32) {
     }
 }
 
-fn main() {
-    tester(42);
-}
-
 fn _under_msrv() {
     #![clippy::msrv = "1.57"]
     let local_i32 = 1;
@@ -175,3 +171,45 @@ fn _meets_msrv() {
     let local_i32 = 1;
     println!("expand='{local_i32}'");
 }
+
+macro_rules! _internal {
+    ($($args:tt)*) => {
+        println!("{}", format_args!($($args)*))
+    };
+}
+
+macro_rules! my_println2 {
+   ($target:expr, $($args:tt)+) => {{
+       if $target {
+           _internal!($($args)+)
+       }
+    }};
+}
+
+macro_rules! my_println2_args {
+    ($target:expr, $($args:tt)+) => {{
+       if $target {
+           _internal!("foo: {}", format_args!($($args)+))
+       }
+    }};
+}
+
+macro_rules! my_error {
+    ($fmt:literal $(, $e:expr)*) => {
+        println!(concat!("ERROR: ", $fmt), $($e,)*)
+    }
+}
+
+fn custom_fmt() {
+    let local_i32 = 1;
+    my_println2!(true, "{local_i32}");
+    my_println2_args!(true, "{local_i32}");
+    my_error!("{}", local_i32);
+}
+
+// Add new tests right above this line, but
+// keep the main function last
+fn main() {
+    tester(42);
+    custom_fmt()
+}

tests/ui/uninlined_format_args.rs

@@ -165,10 +165,6 @@ fn tester(fn_arg: i32) {
     }
 }
 
-fn main() {
-    tester(42);
-}
-
 fn _under_msrv() {
     #![clippy::msrv = "1.57"]
     let local_i32 = 1;
@@ -180,3 +176,45 @@ fn _meets_msrv() {
     let local_i32 = 1;
     println!("expand='{}'", local_i32);
 }
+
+macro_rules! _internal {
+    ($($args:tt)*) => {
+        println!("{}", format_args!($($args)*))
+    };
+}
+
+macro_rules! my_println2 {
+   ($target:expr, $($args:tt)+) => {{
+       if $target {
+           _internal!($($args)+)
+       }
+    }};
+}
+
+macro_rules! my_println2_args {
+    ($target:expr, $($args:tt)+) => {{
+       if $target {
+           _internal!("foo: {}", format_args!($($args)+))
+       }
+    }};
+}
+
+macro_rules! my_error {
+    ($fmt:literal $(, $e:expr)*) => {
+        println!(concat!("ERROR: ", $fmt), $($e,)*)
+    }
+}
+
+fn tester2() {
+    let local_i32 = 1;
+    my_println2!(true, "{}", local_i32);
+    my_println2_args!(true, "{}", local_i32);
+    my_error!("{}", local_i32);
+}
+
+// Add new tests right above this line to keep existing test line numbers intact.
+// The main function is the only one that be kept at the end.
+fn main() {
+    tester(42);
+    tester2();
+}

tests/ui/uninlined_format_args.stderr

@@ -834,6 +834,30 @@ LL -     println!("{}", format!("{}", local_i32));
 LL +     println!("{}", format!("{local_i32}"));
    |
 
+error: variables can be used directly in the `format!` string
+  --> $DIR/uninlined_format_args.rs:127:5
+   |
+LL |     my_println!("{}", local_i32);
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+help: change this to
+   |
+LL -     my_println!("{}", local_i32);
+LL +     my_println!("{local_i32}");
+   |
+
+error: variables can be used directly in the `format!` string
+  --> $DIR/uninlined_format_args.rs:128:5
+   |
+LL |     my_println_args!("{}", local_i32);
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+help: change this to
+   |
+LL -     my_println_args!("{}", local_i32);
+LL +     my_println_args!("{local_i32}");
+   |
+
 error: variables can be used directly in the `format!` string
   --> $DIR/uninlined_format_args.rs:144:5
    |
@@ -893,7 +917,7 @@ LL +         panic!("p3 {local_i32}");
    |
 
 error: variables can be used directly in the `format!` string
-  --> $DIR/uninlined_format_args.rs:181:5
+  --> $DIR/uninlined_format_args.rs:177:5
    |
 LL |     println!("expand='{}'", local_i32);
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -904,5 +928,29 @@ LL -     println!("expand='{}'", local_i32);
 LL +     println!("expand='{local_i32}'");
    |
 
-error: aborting due to 76 previous errors
+error: variables can be used directly in the `format!` string
+  --> $DIR/uninlined_format_args.rs:210:5
+   |
+LL |     my_println2!(true, "{}", local_i32);
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+help: change this to
+   |
+LL -     my_println2!(true, "{}", local_i32);
+LL +     my_println2!(true, "{local_i32}");
+   |
+
+error: variables can be used directly in the `format!` string
+  --> $DIR/uninlined_format_args.rs:211:5
+   |
+LL |     my_println2_args!(true, "{}", local_i32);
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+help: change this to
+   |
+LL -     my_println2_args!(true, "{}", local_i32);
+LL +     my_println2_args!(true, "{local_i32}");
+   |
+
+error: aborting due to 80 previous errors