language-servers/rust-analyzer
1
0
Fork 0
mirror of https://github.com/rust-lang/rust-analyzer.git synced 2025-09-28 12:54:58 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 4

Checks no repetition for an empty token

Browse source
This commit is contained in:
Edwin Cheng 2020-04-25 23:09:20 +08:00
parent 44e6c2cb54
commit d5eb43f246
2 changed files with 75 additions and 12 deletions
Download patch file Download diff file Expand all files Collapse all files

37
crates/ra_mbe/src/tests.rs
View file

@ -1657,7 +1657,7 @@ impl MacroFixture {
}
}
pub(crate) fn parse_macro(ra_fixture: &str) -> MacroFixture {
fn parse_macro_to_tt(ra_fixture: &str) -> tt::Subtree {
let source_file = ast::SourceFile::parse(ra_fixture).ok().unwrap();
let macro_definition =
source_file.syntax().descendants().find_map(ast::MacroCall::cast).unwrap();
@ -1671,10 +1671,24 @@ pub(crate) fn parse_macro(ra_fixture: &str) -> MacroFixture {
.0;
assert_eq!(definition_tt, parsed);
definition_tt
}
pub(crate) fn parse_macro(ra_fixture: &str) -> MacroFixture {
let definition_tt = parse_macro_to_tt(ra_fixture);
let rules = MacroRules::parse(&definition_tt).unwrap();
MacroFixture { rules }
}
pub(crate) fn parse_macro_error(ra_fixture: &str) -> ParseError {
let definition_tt = parse_macro_to_tt(ra_fixture);
match MacroRules::parse(&definition_tt) {
Ok(_) => panic!("Expect error"),
Err(err) => err,
}
}
pub(crate) fn parse_to_token_tree_by_syntax(ra_fixture: &str) -> tt::Subtree {
let source_file = ast::SourceFile::parse(ra_fixture).ok().unwrap();
let tt = syntax_node_to_token_tree(source_file.syntax()).unwrap().0;
@ -1840,6 +1854,27 @@ fn test_no_space_after_semi_colon() {
);
}
// https://github.com/rust-lang/rust/blob/master/src/test/ui/issues/issue-57597.rs
#[test]
fn test_rustc_issue_57597() {
fn test_error(fixture: &str) {
assert_eq!(parse_macro_error(fixture), ParseError::RepetitionEmtpyTokenTree);
}
test_error("macro_rules! foo { ($($($i:ident)?)+) => {}; }");
test_error("macro_rules! foo { ($($($i:ident)?)*) => {}; }");
test_error("macro_rules! foo { ($($($i:ident)?)?) => {}; }");
test_error("macro_rules! foo { ($($($($i:ident)?)?)?) => {}; }");
test_error("macro_rules! foo { ($($($($i:ident)*)?)?) => {}; }");
test_error("macro_rules! foo { ($($($($i:ident)?)*)?) => {}; }");
test_error("macro_rules! foo { ($($($($i:ident)?)?)*) => {}; }");
test_error("macro_rules! foo { ($($($($i:ident)*)*)?) => {}; }");
test_error("macro_rules! foo { ($($($($i:ident)?)*)*) => {}; }");
test_error("macro_rules! foo { ($($($($i:ident)?)*)+) => {}; }");
test_error("macro_rules! foo { ($($($($i:ident)+)?)*) => {}; }");
test_error("macro_rules! foo { ($($($($i:ident)+)*)?) => {}; }");
}
#[test]
fn test_expand_bad_literal() {
parse_macro(