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libsyntax: Remove unused MultiRenamer

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This commit is contained in:
Patrick Walton 2014-01-03 12:14:13 -08:00
parent 1d29163e9c
commit 901df8a63b
1 changed files with 3 additions and 17 deletions
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20
src/libsyntax/ext/expand.rs
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@ -493,13 +493,14 @@ fn expand_non_macro_stmt(s: &Stmt, fld: &mut MacroExpander)
let mut name_finder = new_name_finder(~[]);
name_finder.visit_pat(expanded_pat,());
// generate fresh names, push them to a new pending list
let new_pending_renames = @mut ~[];
let mut new_pending_renames = ~[];
for ident in name_finder.ident_accumulator.iter() {
let new_name = fresh_name(ident);
new_pending_renames.push((*ident,new_name));
}
let rewritten_pat = {
let mut rename_fld = renames_to_fold(new_pending_renames);
let mut rename_fld =
renames_to_fold(&mut new_pending_renames);
// rewrite the pattern using the new names (the old ones
// have already been applied):
rename_fld.fold_pat(expanded_pat)
@ -981,21 +982,6 @@ impl CtxtFn for Renamer {
}
}
// a renamer that performs a whole bunch of renames
pub struct MultiRenamer {
renames : @mut ~[(ast::Ident,ast::Name)]
}
impl CtxtFn for MultiRenamer {
fn f(&self, starting_ctxt : ast::SyntaxContext) -> ast::SyntaxContext {
// the individual elements are memoized... it would
// also be possible to memoize on the whole list at once.
self.renames.iter().fold(starting_ctxt,|ctxt,&(from,to)| {
new_rename(from,to,ctxt)
})
}
}
// a marker adds the given mark to the syntax context
pub struct Marker { mark : Mrk }