net.sourceforge.plantuml.project2.Knowledge Maven / Gradle / Ivy
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PlantUML is a component that allows to quickly write :
* sequence diagram,
* use case diagram,
* class diagram,
* activity diagram,
* component diagram,
* state diagram
* object diagram
/* ========================================================================
* PlantUML : a free UML diagram generator
* ========================================================================
*
* (C) Copyright 2009-2013, Arnaud Roques
*
* Project Info: http://plantuml.sourceforge.net
*
* This file is part of PlantUML.
*
* PlantUML is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* PlantUML distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
* License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* Original Author: Arnaud Roques
*
* Revision $Revision: 6104 $
*
*/
package net.sourceforge.plantuml.project2;
import java.util.HashMap;
import java.util.Map;
public class Knowledge {
private final TaskContainer taskContainer;
private final TimeLine timeline;
private final Map variables = new HashMap();
public Knowledge(TaskContainer taskContainer, TimeLine timeline) {
this.taskContainer = taskContainer;
this.timeline = timeline;
}
public Value evaluate(String exp) {
exp = exp.trim();
int idx = exp.indexOf('$');
if (idx != -1) {
return evaluate(exp.substring(0, idx), exp.substring(idx + 1));
}
if (exp.matches("\\d+")) {
return new ValueInt(Integer.parseInt(exp));
}
if (Day.isValidDesc(exp)) {
final Day day = new Day(exp);
return new ValueTime(day);
}
if (exp.startsWith("^")) {
exp = exp.substring(1);
}
if (variables.containsKey(exp)) {
return variables.get(exp);
}
idx = exp.indexOf("+");
if (idx != -1) {
return plus(exp.substring(0, idx), exp.substring(idx + 1));
}
throw new UnsupportedOperationException(exp);
}
private Value plus(String arg1, String arg2) {
final Value v1 = evaluate(arg1);
final Value v2 = evaluate(arg2);
if (v1 instanceof ValueInt && v2 instanceof ValueInt) {
return new ValueInt(((ValueInt) v1).getValue() + ((ValueInt) v2).getValue());
}
if (v1 instanceof ValueTime && v2 instanceof ValueInt) {
final int nb = ((ValueInt) v2).getValue();
TimeElement t = ((ValueTime) v1).getValue();
if (nb > 0) {
for (int i = 0; i < nb; i++) {
t = timeline.next(t);
}
}
if (nb < 0) {
for (int i = 0; i < -nb; i++) {
t = timeline.previous(t);
}
}
return new ValueTime(t);
}
throw new UnsupportedOperationException();
}
private Value evaluate(String task, String attribute) {
final Task t = taskContainer.getTask(task);
final TaskAttribute att = TaskAttribute.fromString(attribute);
if (att == TaskAttribute.COMPLETED) {
return new ValueTime(t.getCompleted());
}
throw new UnsupportedOperationException();
}
public void set(String var, Value exp) {
variables.put(var, exp);
}
}