| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| SideEffectOperation |
|
| 3.3333333333333335;3,333 |
| 1 | /* | |
| 2 | * Copyright (c) 2006 - 2011 Michael Schierl | |
| 3 | * All rights reserved. | |
| 4 | * | |
| 5 | * This program is free software: you can redistribute it and/or modify | |
| 6 | * it under the terms of the GNU General Public License as published by | |
| 7 | * the Free Software Foundation, either version 2 of the License, or | |
| 8 | * (at your option) any later version. | |
| 9 | * | |
| 10 | * This program is distributed in the hope that it will be useful, | |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 13 | * GNU General Public License for more details. | |
| 14 | * | |
| 15 | * You should have received a copy of the GNU General Public License | |
| 16 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 17 | */ | |
| 18 | package net.sf.jmatchparser.template.engine.operation; | |
| 19 | ||
| 20 | import net.sf.jmatchparser.template.engine.ParserState; | |
| 21 | ||
| 22 | // these operations have a side effect, | |
| 23 | // and can only be called if there are no other | |
| 24 | // queued states | |
| 25 | public abstract class SideEffectOperation extends Operation { | |
| 26 | ||
| 27 | protected SideEffectOperation(String templatePosition) { | |
| 28 | 21 | super(templatePosition); |
| 29 | 21 | } |
| 30 | ||
| 31 | @Override | |
| 32 | public final OperationResult execute(ParserState state) { | |
| 33 | // note that this operation can be run a lot of times before | |
| 34 | // all states are away, because the other states may fork a lot | |
| 35 | // before all of them die | |
| 36 | 30 | if (state.getParser().getSideEffectState() == state) |
| 37 | 1 | state.getParser().setSideEffectState(null); |
| 38 | 30 | if (state.getParser().hasQueuedStates()) { |
| 39 | 3 | if (state.getParser().getSideEffectState() != null) { |
| 40 | // another operation is waiting as well; so set | |
| 41 | // waitingSideEffectOperation to this so that | |
| 42 | // the other one will fail as well | |
| 43 | 1 | state.getParser().setSideEffectState(state); |
| 44 | 1 | return OperationResult.FAIL_BLOCKED; |
| 45 | } else { | |
| 46 | 2 | state.getParser().setSideEffectState(state); |
| 47 | // put this state to the end and wait for the others to die | |
| 48 | 2 | state.setNextInstruction(state.getNextInstruction() - 1); |
| 49 | 2 | state.getParser().enqueueState(state); |
| 50 | 2 | return OperationResult.DIE; |
| 51 | } | |
| 52 | } else { | |
| 53 | 27 | if (state.getParser().getSideEffectState() != null) { |
| 54 | 1 | return OperationResult.FAIL_BLOCKED; |
| 55 | } | |
| 56 | // optimize the parser state | |
| 57 | 26 | state.preprocessXmlActions(); |
| 58 | 26 | return executeWithSideEffects(state); |
| 59 | } | |
| 60 | } | |
| 61 | ||
| 62 | public abstract OperationResult executeWithSideEffects(ParserState state); | |
| 63 | } |