slightly more standard code setup for String.literal, with explicit special case in predicate compiler
(* Title: Code_Test_OCaml.thy
Author: Andreas Lochbihler, ETH Zurich
Test case for test_code on OCaml
*)
theory Code_Test_OCaml imports "../Library/Code_Test" begin
test_code "14 + 7 * -12 = (140 div -2 :: integer)" in OCaml
value [OCaml] "14 + 7 * -12 :: integer"
end