/*
* JBoss by Red Hat
* Copyright 2006-2009, Red Hat Middleware, LLC, and individual contributors as indicated
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.ide.eclipse.freemarker.model;
import java.util.ArrayList;
import java.util.Map;
import org.eclipse.core.resources.IResource;
import org.eclipse.jface.text.ITypedRegion;
import org.eclipse.jface.text.source.ISourceViewer;
import org.jboss.ide.eclipse.freemarker.lang.Directive;
import org.jboss.ide.eclipse.freemarker.lang.LexicalConstants;
import org.jboss.ide.eclipse.freemarker.lang.ParserUtils;
import org.jboss.ide.eclipse.freemarker.lang.ParserUtils.ParseException;
public class AssignmentDirective extends AbstractDirective {
public static Boolean isNestable(String cont, Directive type) throws ParseException {
ParserUtils parser = new ParserUtils(cont);
/* the directive name */
parser.match(type.getKeyword().toString());
parser.consumeWhiteSpace();
/* first variable name */
parser.consumeIdentifierOrStringLiteral();
parser.consumeWhiteSpace();
/* lack of an equals sign at this position means that this is a nesting form of assign */
return Boolean.valueOf(parser.isAtEndOfInput()
|| !parser.matches(LexicalConstants.EQUALS, false));
}
private AssignmentEndDirective endDirective;
private Directive type;
private Boolean nestable = null;
public AssignmentDirective(ItemSet itemSet, Directive type) {
super(itemSet);
this.type = type;
}
@Override
protected void init(ITypedRegion region, ISourceViewer viewer, IResource resource) throws Exception {
}
@Override
public boolean isStartItem() {
return super.isNestable();
}
@Override
public void relateItem(Item directive) {
if (directive instanceof AssignmentEndDirective)
endDirective = (AssignmentEndDirective) directive;
}
@Override
public boolean relatesToItem(Item directive) {
return (directive instanceof AssignmentEndDirective);
}
@Override
public boolean isNestable() {
if (this.nestable == null) {
try {
this.nestable = isNestable(getContents(), this.type);
} catch (ParseException e) {
this.nestable = Boolean.FALSE;
}
}
return this.nestable.booleanValue();
}
public AssignmentEndDirective getEndDirective() {
return endDirective;
}
@Override
public Item[] getRelatedItems() {
if (null == relatedItems) {
ArrayList<Item> l = new ArrayList<Item>();
if (null != endDirective)
l.add(endDirective);
relatedItems = l.toArray(new Item[l.size()]);
}
return relatedItems;
}
private Item[] relatedItems;
@Override
public String getTreeImage() {
return "assign.png"; //$NON-NLS-1$
}
Map<String, Class<?>> contextValues;
@Override
public void addToContext(Map<String, Class<?>> context) {
if (null == contextValues) {
String[] values = splitContents();
String key = null;
String value = null;
if (values.length >= 2) key = values[1];
if (values.length >= 4) value = values[3];
Class<?> valueClass = null;
if (null != value && value.length() > 0) {
if (value.charAt(0) == LexicalConstants.QUOT) valueClass = String.class;
else if (Character.isDigit(value.charAt(0))) valueClass = Number.class;
else {
CompletionInterpolation completionInterpolation =
new CompletionInterpolation(getItemSet(), "${" + value, 2, getResource()); //$NON-NLS-1$
valueClass = completionInterpolation.getReturnClass(context);
}
}
if (null != key) {
context.put(key, valueClass);
}
}
super.addToContext(context);
}
@Override
public Item getEndItem() {
return endDirective;
}
}