rust/tests/ui/collapsible_span_lint_calls.rs

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// 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() {}