-- -- Propagates symbol tables as attribute 'lhs.tbls' over the AST -- ATTR SwfFile Tags [ tbls : {[SymbolTables]} | | ] ATTR Tag AllAbcFile [ tbls : SymbolTables | | ] SEM SwfFile | File tags.tbls = @lhs.tbls SEM Tags | Cons hd.tbls = head @lhs.tbls tl.tbls = tail @lhs.tbls