(* Author: Andreas Lochbihler, KIT *)

header {* Pretty syntax for almost everywhere constant functions *}

theory FinFun_Syntax imports FinFun begin

type_notation

  finfun ("(_ =>f /_)" [22, 21] 21)

type_notation (xsymbols)

  finfun ("(_ \<Rightarrow>f /_)" [22, 21] 21)

notation

  finfun_const ("K$/ _" [0] 1) and

  finfun_update ("_'(_ $:= _')" [1000,0,0] 1000) and

  finfun_apply (infixl "$" 999) and

  finfun_comp (infixr "o$" 55) and

  finfun_comp2 (infixr "$o" 55) and

  finfun_Diag ("(1'($_,/ _$'))" [0, 0] 1000)

notation (xsymbols) 

  finfun_comp (infixr "\<circ>$" 55) and

  finfun_comp2 (infixr "$\<circ>" 55)

end