Java Code Examples for org.eclipse.jdt.internal.core.util.Util#sort()

private int sortParticipants(ArrayList group, IConfigurationElement[] configElements, int index) {
	int size = group.size();
	if (size == 0) return index;
	Object[] elements = group.toArray();
	Util.sort(elements, new Util.Comparer() {
		public int compare(Object a, Object b) {
			if (a == b) return 0;
			String id = ((IConfigurationElement) a).getAttribute("id"); //$NON-NLS-1$
			if (id == null) return -1;
			IConfigurationElement[] requiredElements = ((IConfigurationElement) b).getChildren("requires"); //$NON-NLS-1$
			for (int i = 0, length = requiredElements.length; i < length; i++) {
				IConfigurationElement required = requiredElements[i];
				if (id.equals(required.getAttribute("id"))) //$NON-NLS-1$
					return 1;
			}
			return -1;
		}
	});
	for (int i = 0; i < size; i++)
		configElements[index+i] = (IConfigurationElement) elements[i];
	return index + size;
}
 

private boolean hasJavaLikeNamesChanged() {
	char[][] currentNames = Util.getJavaLikeExtensions();
	int current = currentNames.length;
	char[][] prevNames = readJavaLikeNamesFile();
	if (prevNames == null) {
		if (VERBOSE && current != 1)
			Util.verbose("No Java like names found and there is atleast one non-default javaLikeName", System.err); //$NON-NLS-1$
		return (current != 1); //Ignore if only java
	}
	int prev = prevNames.length;
	if (current != prev) {
		if (VERBOSE)
			Util.verbose("Java like names have changed", System.err); //$NON-NLS-1$
		return true;
	}
	if (current > 1) {
		// Sort the current java like names. 
		// Copy the array to avoid modifying the Util static variable
		System.arraycopy(currentNames, 0, currentNames = new char[current][], 0, current);
		Util.sort(currentNames);
	}
	
	// The JavaLikeNames would have been sorted before getting stored in the file,
	// hence just do a direct compare.
	for (int i = 0; i < current; i++) {
		if (!CharOperation.equals(currentNames[i],prevNames[i])) {
			if (VERBOSE)
				Util.verbose("Java like names have changed", System.err); //$NON-NLS-1$
			return true;
		}
	}
	return false;
}
 

private void writeJavaLikeNamesFile() {
	BufferedWriter writer = null;
	String pathName = getJavaPluginWorkingLocation().toOSString();
	try {		
		char[][] currentNames = Util.getJavaLikeExtensions();
		int length = currentNames.length;
		if (length > 1) {
			// Sort the current java like names. 
			// Copy the array to avoid modifying the Util static variable
			System.arraycopy(currentNames, 0, currentNames=new char[length][], 0, length);
			Util.sort(currentNames);
		}
		File javaLikeNamesFile = new File(pathName, "javaLikeNames.txt"); //$NON-NLS-1$
		writer = new BufferedWriter(new FileWriter(javaLikeNamesFile));
		for (int i = 0; i < length-1; i++) {
			writer.write(currentNames[i]);
			writer.write('\n');
		}
		if (length > 0) 
			writer.write(currentNames[length-1]);
		
	} catch (IOException ignored) {
		if (VERBOSE)
			Util.verbose("Failed to write javaLikeNames file", System.err); //$NON-NLS-1$
	} finally {
		if (writer != null) {
			try {
				writer.close();
			} catch (IOException e) {
				// ignore
			}
		}
	}
}
 

/**
 * @see org.eclipse.jdt.core.eval.IEvaluationContext
 * @exception org.eclipse.jdt.internal.eval.InstallException if the code snippet class files could not be deployed.
 */
public void evaluateVariables(INameEnvironment environment, Map options, IRequestor requestor, IProblemFactory problemFactory) throws InstallException {
	deployCodeSnippetClassIfNeeded(requestor);
	VariablesEvaluator evaluator = new VariablesEvaluator(this, environment, options, requestor, problemFactory);
	ClassFile[] classes = evaluator.getClasses();
	if (classes != null) {
		if (classes.length > 0) {
			// Sort classes so that enclosing types are cached before nested types
			// otherwise an AbortCompilation is thrown in 1.5 mode since the enclosing type
			// is needed to resolve a nested type
			Util.sort(classes, new Util.Comparer() {
				public int compare(Object a, Object b) {
					if (a == b) return 0;
					ClassFile enclosing = ((ClassFile) a).enclosingClassFile;
					while (enclosing != null) {
						if (enclosing == b)
							return 1;
						enclosing = enclosing.enclosingClassFile;
					}
					return -1;
				}
			});

			// Send classes
			if (!requestor.acceptClassFiles(classes, null)) {
				throw new InstallException();
			}

			// Remember that the variables have been installed
			int count = this.variableCount;
			GlobalVariable[] variablesCopy = new GlobalVariable[count];
			System.arraycopy(this.variables, 0, variablesCopy, 0, count);
			this.installedVars = new VariablesInfo(evaluator.getPackageName(), evaluator.getClassName(), classes, variablesCopy, count);
			VAR_CLASS_COUNTER++;
		}
		this.varsChanged = false;
	}
}
 

public String toString() {
	StringBuffer result = new StringBuffer("JavaSearchScope on "); //$NON-NLS-1$
	if (this.elements != null) {
		result.append("["); //$NON-NLS-1$
		for (int i = 0, length = this.elements.size(); i < length; i++) {
			JavaElement element = (JavaElement)this.elements.get(i);
			result.append("\n\t"); //$NON-NLS-1$
			result.append(element.toStringWithAncestors());
		}
		result.append("\n]"); //$NON-NLS-1$
	} else {
		if (this.pathsCount == 0) {
			result.append("[empty scope]"); //$NON-NLS-1$
		} else {
			result.append("["); //$NON-NLS-1$
			String[] paths = new String[this.relativePaths.length];
			int index = 0;
			for (int i = 0; i < this.relativePaths.length; i++) {
				String path = this.relativePaths[i];
				if (path == null) continue;
				String containerPath;
				if (ExternalFoldersManager.isInternalPathForExternalFolder(new Path(this.containerPaths[i]))) {
					Object target = JavaModel.getWorkspaceTarget(new Path(this.containerPaths[i]));
					containerPath = ((IFolder) target).getLocation().toOSString();
				} else {
					containerPath = this.containerPaths[i];
				}
				if (path.length() > 0) {
					paths[index++] = containerPath + '/' + path;
				} else {
					paths[index++] = containerPath;
				}
			}
			System.arraycopy(paths, 0, paths = new String[index], 0, index);
			Util.sort(paths);
			for (int i = 0; i < index; i++) {
				result.append("\n\t"); //$NON-NLS-1$
				result.append(paths[i]);
			}
			result.append("\n]"); //$NON-NLS-1$
		}
	}
	return result.toString();
}