org.eclipse.xtext.builder.JDTAwareSourceFolderProvider.java Source code

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Here is the source code for org.eclipse.xtext.builder.JDTAwareSourceFolderProvider.java

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/*******************************************************************************
 * Copyright (c) 2014 itemis AG (http://www.itemis.eu) and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *******************************************************************************/
package org.eclipse.xtext.builder;

import java.util.Collections;
import java.util.List;

import org.apache.log4j.Logger;
import org.eclipse.core.resources.IContainer;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.runtime.IPath;
import org.eclipse.jdt.core.IClasspathEntry;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jdt.core.JavaModelException;

import com.google.common.collect.Lists;

/**
 * @author Stefan Oehme - Initial contribution and API
 * @since 2.6
 */
public class JDTAwareSourceFolderProvider implements EclipseSourceFolderProvider {
    static final Logger log = Logger.getLogger(JDTAwareSourceFolderProvider.class);

    @Override
    public List<? extends IContainer> getSourceFolders(IProject project) {
        List<IContainer> sourceFolders = Lists.newArrayList();
        IJavaProject javaProject = JavaCore.create(project);
        IClasspathEntry[] classpath;
        if (!javaProject.exists()) {
            return Collections.emptyList();
        }
        try {
            classpath = javaProject.getRawClasspath();
        } catch (JavaModelException e) {
            log.error("Error determining source folders for project " + project.getName(), e);
            return Collections.emptyList();
        }
        for (IClasspathEntry entry : classpath) {
            if (entry.getEntryKind() == IClasspathEntry.CPE_SOURCE) {
                IPath path = entry.getPath();
                // see bug https://bugs.eclipse.org/bugs/show_bug.cgi?id=436371
                if (path.segmentCount() == 1) {
                    sourceFolders.add(project);
                } else {
                    sourceFolders.add(project.getWorkspace().getRoot().getFolder(entry.getPath()));
                }
            }
        }
        return sourceFolders;
    }

}