SafeBuilder.java

/*
 * #%~
 * org.overture.ide.core
 * %%
 * Copyright (C) 2008 - 2014 Overture
 * %%
 * This program 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.
 * 
 * This program 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 this program.  If not, see
 * <http://www.gnu.org/licenses/gpl-3.0.html>.
 * #~%
 */
package org.overture.ide.core.builder;

import org.eclipse.core.resources.IMarker;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.ISafeRunnable;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.SafeRunner;
import org.overture.ide.core.ICoreConstants;
import org.overture.ide.core.IVdmModel;
import org.overture.ide.core.VdmCore;
import org.overture.ide.core.ast.VdmModelWorkingCopy;
import org.overture.ide.core.parser.SourceParserManager;
import org.overture.ide.core.resources.IVdmProject;

public class SafeBuilder extends Thread
{

	final IVdmProject currentProject;

	final IProgressMonitor monitor;

	public SafeBuilder(final IVdmProject currentProject,
			final IProgressMonitor monitor)
	{
		this.currentProject = currentProject;

		this.monitor = monitor;
		this.setName("VDM Safe Builder");
		this.setDaemon(true);
	}

	@Override
	public void run()
	{
		try
		{
			IConfigurationElement[] config = Platform.getExtensionRegistry().getConfigurationElementsFor(ICoreConstants.EXTENSION_BUILDER_ID);
			for (IConfigurationElement e : config)
			{
				if (currentProject.getVdmNature().equals(e.getAttribute("nature")))
				{
					final Object o = e.createExecutableExtension("class");
					if (o instanceof AbstractVdmBuilder)
					{
						ISafeRunnable runnable = new ISafeRunnable()
						{

							public void handleException(Throwable e)
							{
								VdmCore.log("SafeBuilder", e);
							}

							public void run() throws Exception
							{
								AbstractVdmBuilder builder = (AbstractVdmBuilder) o;

								final IVdmModel model = currentProject.getModel();

								if (model != null)
								{
									clearProblemMarkers((IProject) currentProject.getAdapter(IProject.class));
									//first fix source model
									SourceParserManager.parseMissingFiles(currentProject, model, monitor);
									//create working copy from source model to be checked
									VdmModelWorkingCopy workingModel = model.getWorkingCopy();
									
									// if the project is parsed with no errors
									if (model.isParseCorrect())
									{
										try
										{
											if (VdmCore.DEBUG)
											{
												System.out.println("Type Checking: "
														+ currentProject.getName());
											}
											monitor.subTask("Type checking: "
													+ currentProject);
											IStatus status = builder.buildModel(currentProject, workingModel);
											// mark ast root as type checked
											if (workingModel != null)
											{
												workingModel.setTypeCheckedStatus(status.isOK());
												//override any existing model and source units
												workingModel.commit();
											}
											
											if(!status.isOK())
											{
												if(status.getException()!=null)
												{
													handleException(status.getException());
												}
											}
										} catch (Exception e)
										{
											workingModel.discard();
											throw e;
										} finally
										{
											monitor.done();
										}
										return;
									} else
									{
										workingModel.discard();
									}
								}
							}
						};
						SafeRunner.run(runnable);
						break;
					}
				}
			}
		} catch (Exception ex)
		{
			System.out.println(ex.getMessage());
			VdmCore.log(ex);
		}

	}

	/***
	 * This method removed all problem markers and its sub-types from the project. It is called before an instance of
	 * the AbstractBuilder is created
	 * 
	 * @param project
	 *            The project which should be build.
	 */
	public static void clearProblemMarkers(IProject project)
	{
		try
		{
			project.deleteMarkers(IMarker.PROBLEM, true, IResource.DEPTH_INFINITE);

		} catch (CoreException e)
		{
			VdmCore.log("VdmCoreBuilder:clearProblemMarkers", e);
		}

	}
}