use base_db::{fixture::WithFixture, SourceDatabase};
use test_utils::mark;
use crate::{test_db::TestDB, ModuleDefId};
use super::*;
fn lower(ra_fixture: &str) -> Arc<Body> {
let (db, file_id) = crate::test_db::TestDB::with_single_file(ra_fixture);
let krate = db.crate_graph().iter().next().unwrap();
let def_map = db.crate_def_map(krate);
let module = def_map.modules_for_file(file_id).next().unwrap();
let module = &def_map[module];
let fn_def = match module.scope.declarations().next().unwrap() {
ModuleDefId::FunctionId(it) => it,
_ => panic!(),
};
db.body(fn_def.into())
}
fn check_diagnostics(ra_fixture: &str) {
let db: TestDB = TestDB::with_files(ra_fixture);
db.check_diagnostics();
}
#[test]
fn your_stack_belongs_to_me() {
mark::check!(your_stack_belongs_to_me);
lower(
"
macro_rules! n_nuple {
($e:tt) => ();
($($rest:tt)*) => {{
(n_nuple!($($rest)*)None,)
}};
}
fn main() { n_nuple!(1,2,3); }
",
);
}
#[test]
fn cfg_diagnostics() {
check_diagnostics(
r"
fn f() {
// The three g̶e̶n̶d̶e̶r̶s̶ statements:
#[cfg(a)] fn f() {} // Item statement
//^^^^^^^^^^^^^^^^^^^ code is inactive due to #[cfg] directives: a is disabled
#[cfg(a)] {} // Expression statement
//^^^^^^^^^^^^ code is inactive due to #[cfg] directives: a is disabled
#[cfg(a)] let x = 0; // let statement
//^^^^^^^^^^^^^^^^^^^^ code is inactive due to #[cfg] directives: a is disabled
abc(#[cfg(a)] 0);
//^^^^^^^^^^^ code is inactive due to #[cfg] directives: a is disabled
let x = Struct {
#[cfg(a)] f: 0,
//^^^^^^^^^^^^^^ code is inactive due to #[cfg] directives: a is disabled
};
match () {
() => (),
#[cfg(a)] () => (),
//^^^^^^^^^^^^^^^^^^ code is inactive due to #[cfg] directives: a is disabled
}
#[cfg(a)] 0 // Trailing expression of block
//^^^^^^^^^^^ code is inactive due to #[cfg] directives: a is disabled
}
",
);
}
#[test]
fn macro_diag_builtin() {
check_diagnostics(
r#"
#[rustc_builtin_macro]
macro_rules! env {}
#[rustc_builtin_macro]
macro_rules! include {}
#[rustc_builtin_macro]
macro_rules! compile_error {}
#[rustc_builtin_macro]
macro_rules! format_args {
() => {}
}
fn f() {
// Test a handful of built-in (eager) macros:
include!(invalid);
//^^^^^^^^^^^^^^^^^ could not convert tokens
include!("does not exist");
//^^^^^^^^^^^^^^^^^^^^^^^^^^ could not convert tokens
env!(invalid);
//^^^^^^^^^^^^^ could not convert tokens
env!("OUT_DIR");
//^^^^^^^^^^^^^^^ `OUT_DIR` not set, enable "load out dirs from check" to fix
compile_error!("compile_error works");
//^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ compile_error works
// Lazy:
format_args!();
//^^^^^^^^^^^^^^ no rule matches input tokens
}
"#,
);
}
#[test]
fn macro_rules_diag() {
check_diagnostics(
r#"
macro_rules! m {
() => {};
}
fn f() {
m!();
m!(hi);
//^^^^^^ leftover tokens
}
"#,
);
}