--- /dev/null
+// run-rustfix
+#![deny(clippy::internal)]
+#![feature(rustc_private)]
+
+extern crate rustc_ast;
+extern crate rustc_errors;
+extern crate rustc_lint;
+extern crate rustc_session;
+extern crate rustc_span;
+
+use rustc_ast::ast::Expr;
+use rustc_errors::{Applicability, DiagnosticBuilder};
+use rustc_lint::{EarlyContext, EarlyLintPass, Lint, LintContext};
+use rustc_session::{declare_lint_pass, declare_tool_lint};
+use rustc_span::source_map::Span;
+
+#[allow(unused_variables)]
+pub fn span_lint_and_then<'a, T: LintContext, F>(cx: &'a T, lint: &'static Lint, sp: Span, msg: &str, f: F)
+where
+ F: for<'b> FnOnce(&mut DiagnosticBuilder<'b>),
+{
+}
+
+#[allow(unused_variables)]
+fn span_lint_and_help<'a, T: LintContext>(
+ cx: &'a T,
+ lint: &'static Lint,
+ span: Span,
+ msg: &str,
+ option_span: Option<Span>,
+ help: &str,
+) {
+}
+
+#[allow(unused_variables)]
+fn span_lint_and_note<'a, T: LintContext>(
+ cx: &'a T,
+ lint: &'static Lint,
+ span: Span,
+ msg: &str,
+ note_span: Option<Span>,
+ note: &str,
+) {
+}
+
+#[allow(unused_variables)]
+fn span_lint_and_sugg<'a, T: LintContext>(
+ cx: &'a T,
+ lint: &'static Lint,
+ sp: Span,
+ msg: &str,
+ help: &str,
+ sugg: String,
+ applicability: Applicability,
+) {
+}
+
+declare_tool_lint! {
+ pub clippy::TEST_LINT,
+ Warn,
+ "",
+ report_in_external_macro: true
+}
+
+declare_lint_pass!(Pass => [TEST_LINT]);
+
+impl EarlyLintPass for Pass {
+ fn check_expr(&mut self, cx: &EarlyContext, expr: &Expr) {
+ let lint_msg = "lint message";
+ let help_msg = "help message";
+ let note_msg = "note message";
+ let sugg = "new_call()";
+ let predicate = true;
+
+ span_lint_and_then(cx, TEST_LINT, expr.span, lint_msg, |db| {
+ db.span_suggestion(expr.span, help_msg, sugg.to_string(), Applicability::MachineApplicable);
+ });
+ span_lint_and_then(cx, TEST_LINT, expr.span, lint_msg, |db| {
+ db.span_help(expr.span, help_msg);
+ });
+ span_lint_and_then(cx, TEST_LINT, expr.span, lint_msg, |db| {
+ db.help(help_msg);
+ });
+ span_lint_and_then(cx, TEST_LINT, expr.span, lint_msg, |db| {
+ db.span_note(expr.span, note_msg);
+ });
+ span_lint_and_then(cx, TEST_LINT, expr.span, lint_msg, |db| {
+ db.note(note_msg);
+ });
+
+ // This expr shouldn't trigger this lint.
+ span_lint_and_then(cx, TEST_LINT, expr.span, lint_msg, |db| {
+ db.note(note_msg);
+ if predicate {
+ db.note(note_msg);
+ }
+ })
+ }
+}
+
+fn main() {}