Java example source code file (TreeKindTest.java)

This example Java source code file (TreeKindTest.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

assertionerror, class, conditional_or, greater_than_equal, logical_complement, long_literal, multiply_assignment, null_literal, string, super_wildcard, treekindtest, unsigned_right_shift_assignment, xor_assignment

The TreeKindTest.java Java example source code

/*
 * Copyright (c) 2006, 2013, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code 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
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/*
 * @test
 * @bug 6341023
 * @summary Tree API: Tree.Kind should have mapping to interface
 */

import com.sun.source.tree.*;

public class TreeKindTest {
    public static void main(String... args) {
        boolean ok = true;

        for (Tree.Kind k: Tree.Kind.values()) {
            //System.err.println(k + " " + k.asInterface());
            Class<? extends Tree> i = k.asInterface();
            switch (k) {
            case POSTFIX_INCREMENT:
            case POSTFIX_DECREMENT:
            case PREFIX_INCREMENT:
            case PREFIX_DECREMENT:
            case UNARY_PLUS:
            case UNARY_MINUS:
            case BITWISE_COMPLEMENT:
            case LOGICAL_COMPLEMENT:
                ok = ok & verify(k, i, i == UnaryTree.class);
                break;

            case MULTIPLY:
            case DIVIDE:
            case REMAINDER:
            case PLUS:
            case MINUS:
            case LEFT_SHIFT:
            case RIGHT_SHIFT:
            case UNSIGNED_RIGHT_SHIFT:
            case LESS_THAN:
            case GREATER_THAN:
            case LESS_THAN_EQUAL:
            case GREATER_THAN_EQUAL:
            case EQUAL_TO:
            case NOT_EQUAL_TO:
            case AND:
            case XOR:
            case OR:
            case CONDITIONAL_AND:
            case CONDITIONAL_OR:
                ok = ok & verify(k, i, i == BinaryTree.class);
                break;

            case MULTIPLY_ASSIGNMENT:
            case DIVIDE_ASSIGNMENT:
            case REMAINDER_ASSIGNMENT:
            case PLUS_ASSIGNMENT:
            case MINUS_ASSIGNMENT:
            case LEFT_SHIFT_ASSIGNMENT:
            case RIGHT_SHIFT_ASSIGNMENT:
            case UNSIGNED_RIGHT_SHIFT_ASSIGNMENT:
            case AND_ASSIGNMENT:
            case XOR_ASSIGNMENT:
            case OR_ASSIGNMENT:
                ok = ok & verify(k, i, i == CompoundAssignmentTree.class);
                break;

            case INT_LITERAL:
            case LONG_LITERAL:
            case FLOAT_LITERAL:
            case DOUBLE_LITERAL:
            case BOOLEAN_LITERAL:
            case CHAR_LITERAL:
            case STRING_LITERAL:
            case NULL_LITERAL:
                ok = ok & verify(k, i, i == LiteralTree.class);
                break;

            case UNBOUNDED_WILDCARD:
            case EXTENDS_WILDCARD:
            case SUPER_WILDCARD:
                ok = ok & verify(k, i, i == WildcardTree.class);
                break;

            case INTERFACE:
            case ANNOTATION_TYPE:
            case ENUM:
            case CLASS:
                ok = ok & verify(k, i, i == ClassTree.class);
                break;

            case ANNOTATION:
            case TYPE_ANNOTATION:
                ok = ok & verify(k, i, i == AnnotationTree.class);
                break;

            case OTHER:
                ok = ok & verify(k, i, i == null);
                break;

            default:
                String ks = k.toString().replace("_", "") + "tree";
                String iName = i.getName();
                String is = iName.substring(iName.lastIndexOf(".") + 1);
                ok = ok & verify(k, i, ks.equalsIgnoreCase(is));
            }
        }

        if (!ok)
            throw new AssertionError("test failed");
    }

    static boolean verify(Tree.Kind k, Class<?> c, boolean b) {
        if (!b)
            System.err.println("error: " + k + " " + c);
        return b;
    }
}