tests/ui-internal/collapsible_span_lint_calls.rs

   1 // run-rustfix
   2 #![deny(clippy::internal)]
   3 #![feature(rustc_private)]
   4
   5 extern crate clippy_utils;
   6 extern crate rustc_ast;
   7 extern crate rustc_errors;
   8 extern crate rustc_lint;
   9 extern crate rustc_session;
  10 extern crate rustc_span;
  11
  12 use clippy_utils::diagnostics::{span_lint_and_help, span_lint_and_note, span_lint_and_sugg, span_lint_and_then};
  13 use rustc_ast::ast::Expr;
  14 use rustc_errors::Applicability;
  15 use rustc_lint::{EarlyContext, EarlyLintPass};
  16 use rustc_session::{declare_lint_pass, declare_tool_lint};
  17
  18 declare_tool_lint! {
  19     pub clippy::TEST_LINT,
  20     Warn,
  21     "",
  22     report_in_external_macro: true
  23 }
  24
  25 declare_lint_pass!(Pass => [TEST_LINT]);
  26
  27 impl EarlyLintPass for Pass {
  28     fn check_expr(&mut self, cx: &EarlyContext, expr: &Expr) {
  29         let lint_msg = "lint message";
  30         let help_msg = "help message";
  31         let note_msg = "note message";
  32         let sugg = "new_call()";
  33         let predicate = true;
  34
  35         span_lint_and_then(cx, TEST_LINT, expr.span, lint_msg, |db| {
  36             db.span_suggestion(expr.span, help_msg, sugg.to_string(), Applicability::MachineApplicable);
  37         });
  38         span_lint_and_then(cx, TEST_LINT, expr.span, lint_msg, |db| {
  39             db.span_help(expr.span, help_msg);
  40         });
  41         span_lint_and_then(cx, TEST_LINT, expr.span, lint_msg, |db| {
  42             db.help(help_msg);
  43         });
  44         span_lint_and_then(cx, TEST_LINT, expr.span, lint_msg, |db| {
  45             db.span_note(expr.span, note_msg);
  46         });
  47         span_lint_and_then(cx, TEST_LINT, expr.span, lint_msg, |db| {
  48             db.note(note_msg);
  49         });
  50
  51         // This expr shouldn't trigger this lint.
  52         span_lint_and_then(cx, TEST_LINT, expr.span, lint_msg, |db| {
  53             db.note(note_msg);
  54             if predicate {
  55                 db.note(note_msg);
  56             }
  57         })
  58     }
  59 }
  60
  61 fn main() {}