src/Pure/Syntax/syntax.ML

   val string_of_typ_global: theory -> typ -> string
   val string_of_sort_global: theory -> sort -> string
   type syntax
   val eq_syntax: syntax * syntax -> bool
   val force_syntax: syntax -> unit
-  val get_infix: syntax -> string -> {assoc: Syntax_Ext.assoc, delim: string, pri: int} option
+  val get_infix: syntax -> string -> {assoc: Printer.assoc, delim: string, pri: int} option
   val lookup_const: syntax -> string -> string option
   val is_keyword: syntax -> string -> bool
   val tokenize: syntax -> bool -> Symbol_Pos.T list -> Lexicon.token list
   val parse: syntax -> string -> Lexicon.token list -> Parser.parsetree list
   val parse_ast_translation: syntax -> string -> (Proof.context -> Ast.ast list -> Ast.ast) option

 
 fun eq_syntax (Syntax (_, s1), Syntax (_, s2)) = s1 = s2;
 
 fun force_syntax (Syntax ({gram, ...}, _)) = ignore (Lazy.force gram);
 
-fun get_infix (Syntax ({input, ...}, _)) c = Syntax_Ext.get_infix input c;
+fun get_infix (Syntax ({prtabs, ...}, _)) c = Printer.get_infix prtabs c;
 
 fun lookup_const (Syntax ({consts, ...}, _)) = Symtab.lookup consts;
 fun is_keyword (Syntax ({lexicon, ...}, _)) = Scan.is_literal lexicon o Symbol.explode;
 fun tokenize (Syntax ({lexicon, ...}, _)) = Lexicon.tokenize lexicon;
 fun parse (Syntax ({gram, ...}, _)) = Parser.parse (Lazy.force gram);