/*
* (c) Copyright 2010-2011 AgileBirds
*
* This file is part of OpenFlexo.
*
* OpenFlexo 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.
*
* OpenFlexo is 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 OpenFlexo. If not, see <http://www.gnu.org/licenses/>.
*
*/
package cb.parser;
import java.util.ArrayList;
import java.util.Iterator;
import cb.petal.BooleanLiteral;
import cb.petal.FloatLiteral;
import cb.petal.IntegerLiteral;
import cb.petal.List;
import cb.petal.Location;
import cb.petal.PetalNode;
import cb.petal.PetalObject;
import cb.petal.SimpleObject;
import cb.petal.SimpleViewObject;
import cb.petal.StringLiteral;
import cb.petal.Tag;
import cb.petal.Tagged;
import cb.petal.Tuple;
import cb.petal.Value;
import cb.util.Constants;
/**
* This factory is used by the parser to create PetalNode objects . Subclass it and overwrite the "instance" if you don't like the way this
* is done.
*
* @version $Id: ObjectFactory.java,v 1.2 2011/09/12 11:47:21 gpolet Exp $
* @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A>
*/
public class ObjectFactory {
private static ObjectFactory instance = new ObjectFactory();
public static ObjectFactory getInstance() {
return instance;
}
public static void setInstance(ObjectFactory o) {
instance = o;
}
/*private*/protected ObjectFactory() {
}
/**
* Create PetalObject like (object Class "Professor" ...). In case there is no corresponding class (yet), return SimpleObject, or
* SimpleViewObject respectively.
*
* @param parent
* the parent of the object in the tree, either another PetalObject or the root node (PetalFile)
* @param id
* the Rose identifier for the node like "Class_Category" which is mapped to a name like "ClassCategory"
* @param params
* the parameter list for the object
* @param tag
* some objects have a "tag", like @12
*/
public PetalObject createObject(PetalNode parent, String id, ArrayList params, String tag) {
int l = tag != null ? Integer.parseInt(tag.substring(1)) : -1;
ArrayList params2 = new ArrayList();
for (Iterator i = params.iterator(); i.hasNext();) {
params2.add(unstringify((String) i.next()));
}
try {
PetalObject obj = (PetalObject) java.lang.Class.forName("cb.petal." + Constants.makeName(id, params2, parent)).newInstance();
obj.setParent(parent);
if (!params2.isEmpty()) {
obj.setParameterList(params2);
}
if (obj instanceof Tagged) {
((Tagged) obj).setTag(l);
} else if (l > 0) {
throw new RuntimeException("Not instance of Tagged but has tag");
}
return obj;
} catch (Exception e) { // Failed
System.err.println("Not found: " + id + e);
}
// Don't know this object
if (l > 0) {
return new SimpleViewObject(parent, id, params2, l);
} else {
return new SimpleObject(parent, id, params2);
}
}
static void assertion(boolean assertion, String mesg) {
if (!assertion) {
throw new RuntimeException("Assertion failed: " + mesg);
}
}
/**
* @return list like (list RoleViews ...) with given name
*/
public List createList(String name) {
return new List(name);
}
/***************************** Literals **********************************/
/**
* @return value literal like (value cardinality "1..n")
*/
public Value createValue(String name, StringLiteral value) {
return new Value(name, value);
}
/**
* @return tuple literal like ("DataBaseSet" 800)
*/
public Tuple createTuple(String first, String second) {
return new Tuple(unstringify(first), Integer.parseInt(second));
}
/**
* @return location literal which is a tuple of integers like (1520, 96)
*/
public Location createLocation(String value1, String value2) {
return new Location(Integer.parseInt(value1), Integer.parseInt(value2));
}
/**
* There are two kinds of string encodings in Rose: Either the usual "foo bar", or a multi line string where each line starts with a |.
*
* @return string literal which may contain multiple lines
*/
public StringLiteral createString(String value, boolean multi) {
if (multi) {
ArrayList list = new ArrayList();
char[] ch = value.substring(1).toCharArray();
StringBuffer buf = new StringBuffer();
boolean new_line = false;
for (int i = 0; i < ch.length; i++) {
switch (ch[i]) {
case '\r':
break;
case '\n':
new_line = true;
break;
case '|':
if (!new_line) {
buf.append('|');
} else {
list.add(buf.toString());
buf.setLength(0);
}
new_line = false;
break;
default:
new_line = false;
buf.append(ch[i]);
break;
}
}
list.add(buf.toString());
return new StringLiteral(list);
} else {
return new StringLiteral(unstringify(value));
}
}
// Remove " "
private static String unstringify(String value) {
return value.substring(1, value.length() - 1);
}
/**
* @return new BooleanLiteral for either "TRUE" or "FALSE"
*/
public BooleanLiteral createBoolean(String value) {
if (value.equals("TRUE")) {
return new BooleanLiteral(true);
} else {
return new BooleanLiteral(false);
}
}
/**
* @return new IntegerLiteral
*/
public IntegerLiteral createInteger(String value) {
return new IntegerLiteral(Integer.parseInt(value));
}
/**
* @return new FloatLiteral (which contains in fact a double)
*/
public FloatLiteral createFloat(String value) {
return new FloatLiteral(Double.parseDouble(value));
}
/**
* @return new tag attached to view objects
*/
public Tag createTag(String ref) {
return new Tag(Integer.parseInt(ref.substring(1)));
}
}