SourceFile.java

/*******************************************************************************
 * Copyright (c) 2000, 2009 IBM Corporation 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
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.jdt.internal.core.builder;

import org.eclipse.core.resources.IFile;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.jdt.core.compiler.CharOperation;
import org.eclipse.jdt.internal.compiler.env.ICompilationUnit;
import org.eclipse.jdt.internal.compiler.problem.AbortCompilation;
import org.eclipse.jdt.internal.core.util.Util;

public class SourceFile implements ICompilationUnit {

	public IFile resource;

	ClasspathMultiDirectory sourceLocation;

	String initialTypeName;

	boolean updateClassFile;

	public SourceFile(IFile resource, ClasspathMultiDirectory sourceLocation) {
		this.resource= resource;
		this.sourceLocation= sourceLocation;
		this.initialTypeName= extractTypeName();
		this.updateClassFile= false;
	}

	public SourceFile(IFile resource, ClasspathMultiDirectory sourceLocation, boolean updateClassFile) {
		this(resource, sourceLocation);

		this.updateClassFile= updateClassFile;
	}

	public boolean equals(Object o) {
		if (this == o)
			return true;
		if (!(o instanceof SourceFile))
			return false;

		SourceFile f= (SourceFile)o;
		return this.sourceLocation == f.sourceLocation && this.resource.getFullPath().equals(f.resource.getFullPath());
	}

	String extractTypeName() {
		// answer a String with the qualified type name for the source file in the form: 'p1/p2/A'
		IPath fullPath= this.resource.getFullPath();
		int resourceSegmentCount= fullPath.segmentCount();
		int sourceFolderSegmentCount= this.sourceLocation.sourceFolder.getFullPath().segmentCount();
		int charCount= (resourceSegmentCount - sourceFolderSegmentCount - 1);
		resourceSegmentCount--; // deal with the last segment separately
		for (int i= sourceFolderSegmentCount; i < resourceSegmentCount; i++)
			charCount+= fullPath.segment(i).length();
		String lastSegment= fullPath.segment(resourceSegmentCount);
		int extensionIndex= Util.indexOfJavaLikeExtension(lastSegment);
		charCount+= extensionIndex;

		char[] result= new char[charCount];
		int offset= 0;
		for (int i= sourceFolderSegmentCount; i < resourceSegmentCount; i++) {
			String segment= fullPath.segment(i);
			int size= segment.length();
			segment.getChars(0, size, result, offset);
			offset+= size;
			result[offset++]= '/';
		}
		lastSegment.getChars(0, extensionIndex, result, offset);
		return new String(result);
	}

	public char[] getContents() {

		try {
			return Util.getResourceContentsAsCharArray(this.resource);
		} catch (CoreException e) {
			throw new AbortCompilation(true, new MissingSourceFileException(this.resource.getFullPath().toString()));
		}
	}

	/**
	 * @see org.eclipse.jdt.internal.compiler.env.IDependent#getFileName()
	 */
	public char[] getFileName() {
		return this.resource.getFullPath().toString().toCharArray(); // do not know what you want to return here
	}

	public char[] getMainTypeName() {
		char[] typeName= this.initialTypeName.toCharArray();
		int lastIndex= CharOperation.lastIndexOf('/', typeName);
		return CharOperation.subarray(typeName, lastIndex + 1, -1);
	}

	public char[][] getPackageName() {
		char[] typeName= this.initialTypeName.toCharArray();
		int lastIndex= CharOperation.lastIndexOf('/', typeName);
		return CharOperation.splitOn('/', typeName, 0, lastIndex);
	}

	public int hashCode() {
		return this.initialTypeName.hashCode();
	}

	String typeLocator() {
		return this.resource.getProjectRelativePath().toString();
	}

	public String toString() {
		return "SourceFile[" //$NON-NLS-1$
				+ this.resource.getFullPath() + "]"; //$NON-NLS-1$
	}
}