disable unix_domain for now: somewhat unstable, e.g. "isabelle build -b HOL-Analysis" on arm64_32-darwin (studio1);
section \<open>Concrete Syntax\<close>
theory Quote_Antiquote imports Main begin
syntax
"_quote" :: "'b \<Rightarrow> ('a \<Rightarrow> 'b)" ("(\<guillemotleft>_\<guillemotright>)" [0] 1000)
"_antiquote" :: "('a \<Rightarrow> 'b) \<Rightarrow> 'b" ("\<acute>_" [1000] 1000)
"_Assert" :: "'a \<Rightarrow> 'a set" ("(\<lbrace>_\<rbrace>)" [0] 1000)
translations
"\<lbrace>b\<rbrace>" \<rightharpoonup> "CONST Collect \<guillemotleft>b\<guillemotright>"
parse_translation \<open>
let
fun quote_tr [t] = Syntax_Trans.quote_tr \<^syntax_const>\<open>_antiquote\<close> t
| quote_tr ts = raise TERM ("quote_tr", ts);
in [(\<^syntax_const>\<open>_quote\<close>, K quote_tr)] end
\<close>
end