theory Base

imports Main 

        "~~/src/HOL/Library/LaTeXsugar"

begin

print_ML_antiquotations

text \<open>Hallo ML Antiquotation:

@{ML \<open>2 + 3\<close>}

\<close>

notation (latex output)

  Cons ("_ # _" [66,65] 65)

ML %linenosgrayML\<open>fun P n = @{term "P::nat \<Rightarrow> bool"} $ (HOLogic.mk_number @{typ "nat"} n) 

fun rhs 1 = P 1

  | rhs n = HOLogic.mk_conj (P n, rhs (n - 1))

fun lhs 1 n = HOLogic.mk_imp (HOLogic.mk_eq (P 1, P n), rhs n)

  | lhs m n = HOLogic.mk_conj (HOLogic.mk_imp 

                 (HOLogic.mk_eq (P (m - 1), P m), rhs n), lhs (m - 1) n)

fun de_bruijn n =

  HOLogic.mk_Trueprop (HOLogic.mk_imp (lhs n n, rhs n))\<close>

ML_file "output_tutorial.ML"

ML_file "antiquote_setup.ML"

(*setup {* OutputTutorial.setup *}*) (* Seems to be standard now, we don't need this anymoe *)

setup \<open>AntiquoteSetup.setup\<close>

print_ML_antiquotations

text \<open>Hallo ML Antiquotation:

@{ML \<open>2 + 3\<close> }

\<close>

end