| 1 | (* HCoop Domtool (http://hcoop.sourceforge.net/) |
| 2 | * Copyright (c) 2006, Adam Chlipala |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License |
| 6 | * as published by the Free Software Foundation; either version 2 |
| 7 | * of the License, or (at your option) any later version. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software |
| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 17 | *) |
| 18 | |
| 19 | (* Add some base types *) |
| 20 | |
| 21 | structure BaseTypes :> BASE_TYPES = struct |
| 22 | |
| 23 | open Ast |
| 24 | |
| 25 | val _ = Env.registerType ("even", fn (EInt n, _) => n mod 2 = 0 |
| 26 | | _ => false) |
| 27 | |
| 28 | val _ = Env.registerType ("digits", fn (EString s, _) => CharVector.all Char.isDigit s |
| 29 | | _ => false) |
| 30 | |
| 31 | end |