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Add parse_to_token_tree

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This commit is contained in:
Edwin Cheng 2020-03-09 00:13:04 +08:00
parent 013e908056
commit e7206467d5
5 changed files with 213 additions and 37 deletions
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12
crates/ra_mbe/src/tests.rs
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@ -1499,12 +1499,20 @@ impl MacroFixture {
}
}
pub(crate) fn parse_macro(macro_definition: &str) -> MacroFixture {
let source_file = ast::SourceFile::parse(macro_definition).ok().unwrap();
pub(crate) fn parse_macro(ra_fixture: &str) -> MacroFixture {
let source_file = ast::SourceFile::parse(ra_fixture).ok().unwrap();
let macro_definition =
source_file.syntax().descendants().find_map(ast::MacroCall::cast).unwrap();
let (definition_tt, _) = ast_to_token_tree(&macro_definition.token_tree().unwrap()).unwrap();
let parsed = parse_to_token_tree(
&ra_fixture[macro_definition.token_tree().unwrap().syntax().text_range()],
)
.unwrap()
.0;
assert_eq!(definition_tt, parsed);
let rules = MacroRules::parse(&definition_tt).unwrap();
MacroFixture { rules }
}