| (* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| *) |
| |
| theory InfoType |
| imports Main |
| begin |
| |
| locale InfoType= |
| fixes data::'infotype |
| and func::'infotype |
| and is_data::"'infotype\<Rightarrow>bool" |
| assumes INFOTYPEHLR1:"is_data data" |
| assumes INFOTYPEHLR2:"\<not>is_data func" |
| assumes INFOTYPEHLR3:"(x::'infotype)=data\<or>x=func" |
| begin |
| |
| lemma INFOTYPEHLR4:"data\<noteq>func" |
| proof |
| assume 0:"data = func" |
| from INFOTYPEHLR1 have "is_data func" by(auto simp: 0) |
| from this show "False" by(auto simp: INFOTYPEHLR2) |
| qed |
| |
| end |
| |
| print_locale! InfoType |
| |
| end |