Theory Quote_Antiquote

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theory Quote_Antiquote
imports Main
begin

header {* \section{Concrete Syntax} *}

theory Quote_Antiquote imports Main begin

syntax
  "_quote"     :: "'b => ('a => 'b)"                ("(«_»)" [0] 1000)
  "_antiquote" :: "('a => 'b) => 'b"                ("´_" [1000] 1000)
  "_Assert"    :: "'a => 'a set"                    ("(.{_}.)" [0] 1000)

syntax (xsymbols)
  "_Assert"    :: "'a => 'a set"            ("(\<lbrace>_\<rbrace>)" [0] 1000)

translations
  ".{b}." \<rightharpoonup> "Collect «b»"

parse_translation {*
  let
    fun quote_tr [t] = Syntax.quote_tr "_antiquote" t
      | quote_tr ts = raise TERM ("quote_tr", ts);
  in [("_quote", quote_tr)] end
*}

end