tests/ui-internal/collapsible_span_lint_calls.rs

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