* http://helm.cs.unibo.it/
*)
-open Ast
-open Parser
+open CicTextualParser2
EXTEND
- term: LEVEL "add"
+ term: LEVEL "logic_add"
[
- [ t1 = term; SYMBOL "∨"; t2 = term ->
- return_term loc (Appl_symbol ("or", [t1; t2]))
+ [ t1 = term; SYMBOL <:unicode<lor>> (* ∨ *); t2 = term ->
+ return_term loc (CicAst.Appl [CicAst.Symbol ("or", 0); t1; t2])
]
];
- term: LEVEL "mult"
+ term: LEVEL "logic_mult"
[
- [ t1 = term; SYMBOL "∧"; t2 = term ->
- return_term loc (Appl_symbol ("and", [t1; t2]))
+ [ t1 = term; SYMBOL <:unicode<land>> (* ∧ *); t2 = term ->
+ return_term loc (CicAst.Appl [CicAst.Symbol ("and", 0); t1; t2])
]
];
- term: LEVEL "inv"
+ term: LEVEL "logic_inv"
[
- [ SYMBOL "¬"; t = term -> return_term loc (Appl_symbol ("not", [t])) ]
+ [ SYMBOL <:unicode<lnot>> (* ¬ *); t = term ->
+ return_term loc (CicAst.Appl [CicAst.Symbol ("not", 0); t])
+ ]
];
END
+
+let _ =
+ (* TODO cut-and-pasted code: here, in arit_notation.ml and
+ * disambiguateChoices.ml *)
+ let const s = Cic.Const (s, []) in
+ let mutind s = Cic.MutInd (s, 0, []) in
+ DisambiguateChoices.add_symbol_choice "eq"
+ ("leibnitz's equality",
+ (fun interp _ args ->
+ let t1, t2 =
+ match args with
+ | [t1; t2] -> t1, t2
+ | _ -> raise DisambiguateChoices.Invalid_choice
+ in
+ Cic.Appl [
+ Cic.MutInd (HelmLibraryObjects.Logic.eq_URI, 0, []);
+ Cic.Implicit (Some `Type); t1; t2
+ ]));
+ DisambiguateChoices.add_binary_op "and" "logical and"
+ (mutind HelmLibraryObjects.Logic.and_URI);
+ DisambiguateChoices.add_binary_op "or" "logical or"
+ (mutind HelmLibraryObjects.Logic.or_URI);
+ DisambiguateChoices.add_unary_op "not" "logical not"
+ (const HelmLibraryObjects.Logic.not_URI);
+
+(* vim:set encoding=utf8: *)