org.eclipse.jdt.internal.core.ImportContainer.java Source code

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Here is the source code for org.eclipse.jdt.internal.core.ImportContainer.java

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/*******************************************************************************
 * Copyright (c) 2000, 2010 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.jdt.internal.core;

import org.eclipse.jdt.core.*;
import org.eclipse.jdt.internal.core.util.MementoTokenizer;

/**
 * @see IImportContainer
 */
public class ImportContainer extends SourceRefElement implements IImportContainer {
    protected ImportContainer(CompilationUnit parent) {
        super(parent);
    }

    @Override
    public boolean equals(Object o) {
        if (!(o instanceof ImportContainer))
            return false;
        return super.equals(o);
    }

    /**
     * @see IJavaElement
     */
    @Override
    public int getElementType() {
        return IMPORT_CONTAINER;
    }

    @Override
    public IJavaElement getHandleFromMemento(String token, MementoTokenizer memento,
            WorkingCopyOwner workingCopyOwner) {
        switch (token.charAt(0)) {
        case JEM_COUNT:
            return getHandleUpdatingCountFromMemento(memento, workingCopyOwner);
        case JEM_IMPORTDECLARATION:
            if (memento.hasMoreTokens()) {
                String importName = memento.nextToken();
                JavaElement importDecl = (JavaElement) getImport(importName);
                return importDecl.getHandleFromMemento(memento, workingCopyOwner);
            } else {
                return this;
            }
        }
        return null;
    }

    /**
     * @see JavaElement#getHandleMemento()
     */
    @Override
    protected char getHandleMementoDelimiter() {
        return JavaElement.JEM_IMPORTDECLARATION;
    }

    /**
     * @see IImportContainer
     */
    @Override
    public IImportDeclaration getImport(String importName) {
        int index = importName.indexOf(".*"); ///$NON-NLS-1$
        boolean isOnDemand = index != -1;
        if (isOnDemand) {
            importName = importName.substring(0, index);
        }
        return getImport(importName, isOnDemand);
    }

    protected IImportDeclaration getImport(String importName, boolean isOnDemand) {
        return new ImportDeclaration(this, importName, isOnDemand);
    }

    @Override
    public IJavaElement getPrimaryElement(boolean checkOwner) {
        CompilationUnit cu = (CompilationUnit) this.parent;
        if (checkOwner && cu.isPrimary())
            return this;
        return cu.getImportContainer();
    }

    /**
     * @see ISourceReference
     */
    @Override
    public ISourceRange getSourceRange() throws JavaModelException {
        IJavaElement[] imports = getChildren();
        ISourceRange firstRange = ((ISourceReference) imports[0]).getSourceRange();
        ISourceRange lastRange = ((ISourceReference) imports[imports.length - 1]).getSourceRange();
        SourceRange range = new SourceRange(firstRange.getOffset(),
                lastRange.getOffset() + lastRange.getLength() - firstRange.getOffset());
        return range;
    }

    /**
     */
    @Override
    public String readableName() {

        return null;
    }

    /**
     * @private Debugging purposes
     */
    @Override
    protected void toString(int tab, StringBuffer buffer) {
        Object info = JavaModelManager.getJavaModelManager().peekAtInfo(this);
        if (info == null || !(info instanceof JavaElementInfo))
            return;
        IJavaElement[] children = ((JavaElementInfo) info).getChildren();
        for (int i = 0; i < children.length; i++) {
            if (i > 0)
                buffer.append("\n"); //$NON-NLS-1$
            ((JavaElement) children[i]).toString(tab, buffer);
        }
    }

    /**
     *  Debugging purposes
     */
    @Override
    protected void toStringInfo(int tab, StringBuffer buffer, Object info, boolean showResolvedInfo) {
        buffer.append(tabString(tab));
        buffer.append("<import container>"); //$NON-NLS-1$
        if (info == null) {
            buffer.append(" (not open)"); //$NON-NLS-1$
        }
    }

    @Override
    public ISourceRange getNameRange() {
        return null;
    }
}