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rust-clippy/tests/ui-internal/collapsible_span_lint_calls.rs

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2 KiB
Rust

#![deny(clippy::internal)]
#![allow(clippy::missing_clippy_version_attribute)]
#![feature(rustc_private)]
extern crate clippy_utils;
extern crate rustc_ast;
extern crate rustc_errors;
extern crate rustc_lint;
extern crate rustc_session;
extern crate rustc_span;
use clippy_utils::diagnostics::{span_lint_and_help, span_lint_and_note, span_lint_and_sugg, span_lint_and_then};
use rustc_ast::ast::Expr;
use rustc_errors::Applicability;
use rustc_lint::{EarlyContext, EarlyLintPass};
use rustc_session::{declare_lint_pass, declare_tool_lint};
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);
}
});
// Issue #8798
span_lint_and_then(cx, TEST_LINT, expr.span, lint_msg, |db| {
db.help(help_msg).help(help_msg);
});
}
}
fn main() {}