Unnamed repository; edit this file 'description' to name the repository.
Diffstat (limited to 'crates/mbe/src/expander.rs')
| -rw-r--r-- | crates/mbe/src/expander.rs | 61 |
1 files changed, 0 insertions, 61 deletions
diff --git a/crates/mbe/src/expander.rs b/crates/mbe/src/expander.rs index 230d33e538..7244d21161 100644 --- a/crates/mbe/src/expander.rs +++ b/crates/mbe/src/expander.rs @@ -114,64 +114,3 @@ enum Fragment { /// like `$i * 2` where `$i = 1 + 1` work as expectd. Ast(tt::TokenTree), } - -#[cfg(test)] -mod tests { - use syntax::{ast, AstNode}; - - use super::*; - use crate::syntax_node_to_token_tree; - - #[test] - fn test_expand_rule() { - assert_err( - "($($i:ident);*) => ($i)", - "foo!{a}", - ExpandError::BindingError(String::from( - "expected simple binding, found nested binding `i`", - )), - ); - - // FIXME: - // Add an err test case for ($($i:ident)) => ($()) - } - - fn assert_err(macro_body: &str, invocation: &str, err: ExpandError) { - assert_eq!( - expand_first(&create_rules(&format_macro(macro_body)), invocation).err, - Some(err) - ); - } - - fn format_macro(macro_body: &str) -> String { - format!( - " - macro_rules! foo {{ - {} - }} -", - macro_body - ) - } - - fn create_rules(macro_definition: &str) -> crate::MacroRules { - let source_file = ast::SourceFile::parse(macro_definition).ok().unwrap(); - let macro_definition = - source_file.syntax().descendants().find_map(ast::MacroRules::cast).unwrap(); - - let (definition_tt, _) = - syntax_node_to_token_tree(macro_definition.token_tree().unwrap().syntax()); - crate::MacroRules::parse(&definition_tt).unwrap() - } - - fn expand_first(rules: &crate::MacroRules, invocation: &str) -> ExpandResult<tt::Subtree> { - let source_file = ast::SourceFile::parse(invocation).ok().unwrap(); - let macro_invocation = - source_file.syntax().descendants().find_map(ast::MacroCall::cast).unwrap(); - - let (invocation_tt, _) = - syntax_node_to_token_tree(macro_invocation.token_tree().unwrap().syntax()); - - expand_rules(&rules.rules, &invocation_tt) - } -} |