org.eclipse.jdt.core.dom.ArrayInitializer.java Source code

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Here is the source code for org.eclipse.jdt.core.dom.ArrayInitializer.java

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/*******************************************************************************
 * Copyright (c) 2000, 2013 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.core.dom;

import java.util.ArrayList;
import java.util.List;

/**
 * Array initializer AST node type.
 *
 * <pre>
 * ArrayInitializer:
 *       <b>{</b> [ Expression { <b>,</b> Expression} [ <b>,</b> ]] <b>}</b>
 * </pre>
 *
 * @since 2.0
 * @noinstantiate This class is not intended to be instantiated by clients.
 */
@SuppressWarnings({ "rawtypes", "unchecked" })
public class ArrayInitializer extends Expression {

    /**
     * The "expressions" structural property of this node type (element type: {@link Expression}).
     * @since 3.0
     */
    public static final ChildListPropertyDescriptor EXPRESSIONS_PROPERTY = new ChildListPropertyDescriptor(
            ArrayInitializer.class, "expressions", Expression.class, CYCLE_RISK); //$NON-NLS-1$

    /**
     * A list of property descriptors (element type:
     * {@link StructuralPropertyDescriptor}),
     * or null if uninitialized.
     */
    private static final List PROPERTY_DESCRIPTORS;

    static {
        List properyList = new ArrayList(2);
        createPropertyList(ArrayInitializer.class, properyList);
        addProperty(EXPRESSIONS_PROPERTY, properyList);
        PROPERTY_DESCRIPTORS = reapPropertyList(properyList);
    }

    /**
     * Returns a list of structural property descriptors for this node type.
     * Clients must not modify the result.
     *
     * @param apiLevel the API level; one of the
     * <code>AST.JLS*</code> constants
        
     * @return a list of property descriptors (element type:
     * {@link StructuralPropertyDescriptor})
     * @since 3.0
     */
    public static List propertyDescriptors(int apiLevel) {
        return PROPERTY_DESCRIPTORS;
    }

    /**
     * The list of expressions (element type:
     * {@link Expression}). Defaults to an empty list.
     */
    private ASTNode.NodeList expressions = new ASTNode.NodeList(EXPRESSIONS_PROPERTY);

    /**
     * Creates a new AST node for an array initializer owned by the
     * given AST. By default, the list of expressions is empty.
     *
     * @param ast the AST that is to own this node
     */
    ArrayInitializer(AST ast) {
        super(ast);
    }

    @Override
    final List internalStructuralPropertiesForType(int apiLevel) {
        return propertyDescriptors(apiLevel);
    }

    @Override
    final List internalGetChildListProperty(ChildListPropertyDescriptor property) {
        if (property == EXPRESSIONS_PROPERTY) {
            return expressions();
        }
        // allow default implementation to flag the error
        return super.internalGetChildListProperty(property);
    }

    @Override
    final int getNodeType0() {
        return ARRAY_INITIALIZER;
    }

    @Override
    ASTNode clone0(AST target) {
        ArrayInitializer result = new ArrayInitializer(target);
        result.setSourceRange(getStartPosition(), getLength());
        result.expressions().addAll(ASTNode.copySubtrees(target, expressions()));
        return result;
    }

    @Override
    final boolean subtreeMatch0(ASTMatcher matcher, Object other) {
        // dispatch to correct overloaded match method
        return matcher.match(this, other);
    }

    @Override
    void accept0(ASTVisitor visitor) {
        boolean visitChildren = visitor.visit(this);
        if (visitChildren) {
            acceptChildren(visitor, this.expressions);
        }
        visitor.endVisit(this);
    }

    /**
     * Returns the live ordered list of expressions in this array initializer.
     *
     * @return the live list of expressions
     *    (element type: {@link Expression})
     */
    public List expressions() {
        return this.expressions;
    }

    @Override
    int memSize() {
        return BASE_NODE_SIZE + 1 * 4;
    }

    @Override
    int treeSize() {
        return memSize() + this.expressions.listSize();
    }
}