1 files changed, 110 insertions, 0 deletions
diff --git a/compiler/rustc_lint/src/errors.rs b/compiler/rustc_lint/src/errors.rs
new file mode 100644
index 00000000000..46dfaf0b83f
--- /dev/null
+++ b/compiler/rustc_lint/src/errors.rs
@@ -0,0 +1,110 @@
+use crate::fluent_generated as fluent;
+use rustc_errors::{codes::*, Diag, EmissionGuarantee, SubdiagMessageOp, Subdiagnostic};
+use rustc_macros::{Diagnostic, Subdiagnostic};
+use rustc_session::lint::Level;
+use rustc_span::{Span, Symbol};
+
+#[derive(Diagnostic)]
+#[diag(lint_overruled_attribute, code = E0453)]
+pub struct OverruledAttribute<'a> {
+    #[primary_span]
+    pub span: Span,
+    #[label]
+    pub overruled: Span,
+    pub lint_level: &'a str,
+    pub lint_source: Symbol,
+    #[subdiagnostic]
+    pub sub: OverruledAttributeSub,
+}
+
+pub enum OverruledAttributeSub {
+    DefaultSource { id: String },
+    NodeSource { span: Span, reason: Option<Symbol> },
+    CommandLineSource,
+}
+
+impl Subdiagnostic for OverruledAttributeSub {
+    fn add_to_diag_with<G: EmissionGuarantee, F: SubdiagMessageOp<G>>(
+        self,
+        diag: &mut Diag<'_, G>,
+        _f: &F,
+    ) {
+        match self {
+            OverruledAttributeSub::DefaultSource { id } => {
+                diag.note(fluent::lint_default_source);
+                diag.arg("id", id);
+            }
+            OverruledAttributeSub::NodeSource { span, reason } => {
+                diag.span_label(span, fluent::lint_node_source);
+                if let Some(rationale) = reason {
+                    #[allow(rustc::untranslatable_diagnostic)]
+                    diag.note(rationale.to_string());
+                }
+            }
+            OverruledAttributeSub::CommandLineSource => {
+                diag.note(fluent::lint_command_line_source);
+            }
+        }
+    }
+}
+
+#[derive(Diagnostic)]
+#[diag(lint_malformed_attribute, code = E0452)]
+pub struct MalformedAttribute {
+    #[primary_span]
+    pub span: Span,
+    #[subdiagnostic]
+    pub sub: MalformedAttributeSub,
+}
+
+#[derive(Subdiagnostic)]
+pub enum MalformedAttributeSub {
+    #[label(lint_bad_attribute_argument)]
+    BadAttributeArgument(#[primary_span] Span),
+    #[label(lint_reason_must_be_string_literal)]
+    ReasonMustBeStringLiteral(#[primary_span] Span),
+    #[label(lint_reason_must_come_last)]
+    ReasonMustComeLast(#[primary_span] Span),
+}
+
+#[derive(Diagnostic)]
+#[diag(lint_unknown_tool_in_scoped_lint, code = E0710)]
+pub struct UnknownToolInScopedLint {
+    #[primary_span]
+    pub span: Option<Span>,
+    pub tool_name: Symbol,
+    pub lint_name: String,
+    #[help]
+    pub is_nightly_build: Option<()>,
+}
+
+#[derive(Diagnostic)]
+#[diag(lint_builtin_ellipsis_inclusive_range_patterns, code = E0783)]
+pub struct BuiltinEllipsisInclusiveRangePatterns {
+    #[primary_span]
+    pub span: Span,
+    #[suggestion(style = "short", code = "{replace}", applicability = "machine-applicable")]
+    pub suggestion: Span,
+    pub replace: String,
+}
+
+#[derive(Subdiagnostic)]
+#[note(lint_requested_level)]
+pub struct RequestedLevel<'a> {
+    pub level: Level,
+    pub lint_name: &'a str,
+}
+
+#[derive(Diagnostic)]
+#[diag(lint_unsupported_group, code = E0602)]
+pub struct UnsupportedGroup {
+    pub lint_group: String,
+}
+
+#[derive(Diagnostic)]
+#[diag(lint_check_name_unknown_tool, code = E0602)]
+pub struct CheckNameUnknownTool<'a> {
+    pub tool_name: Symbol,
+    #[subdiagnostic]
+    pub sub: RequestedLevel<'a>,
+}