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Add comment for the use of Ident in hash map in mtwt

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Vadim Petrochenkov 2015-10-06 01:47:35 +03:00
parent f37d6fc6f3
commit b82d76c8a1
1 changed files with 2 additions and 0 deletions
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src/libsyntax/ext/mtwt.rs
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@ -35,6 +35,8 @@ use std::collections::HashMap;
pub struct SCTable { pub struct SCTable {
table: RefCell<Vec<SyntaxContext_>>, table: RefCell<Vec<SyntaxContext_>>,
mark_memo: RefCell<HashMap<(SyntaxContext,Mrk),SyntaxContext>>, mark_memo: RefCell<HashMap<(SyntaxContext,Mrk),SyntaxContext>>,
// The pair (Name,SyntaxContext) is actually one Ident, but it needs to be hashed and
// compared as pair (name, ctxt) and not as an Ident
rename_memo: RefCell<HashMap<(SyntaxContext,(Name,SyntaxContext),Name),SyntaxContext>>, rename_memo: RefCell<HashMap<(SyntaxContext,(Name,SyntaxContext),Name),SyntaxContext>>,
} }