/*

 * Copyright (c) 2013, 2019, 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.

 */

import java.io.*;

import java.util.*;

import javax.annotation.processing.*;

import javax.lang.model.*;

import javax.lang.model.element.*;

import javax.tools.*;

import com.sun.tools.classfile.*;

import com.sun.tools.classfile.ConstantPool.CONSTANT_Class_info;

import com.sun.tools.classfile.ConstantPool.CONSTANT_Utf8_info;

import com.sun.tools.classfile.ConstantPool.CPInfo;

/* Create an invalid classfile with a static final field of type object with

 * ConstantValue of type String.

 */

@SupportedAnnotationTypes("*")

public class CreateBadClassFile extends AbstractProcessor {

    public boolean process(Set<? extends TypeElement> elems, RoundEnvironment renv) {

        if (++round == 1) {

            ConstantPool cp = new ConstantPool(new CPInfo[] {

                new CONSTANT_Utf8_info(""),                     //0

                new CONSTANT_Utf8_info("Test"),                 //1

                new CONSTANT_Class_info(null, 1),               //2

                new CONSTANT_Utf8_info("java/lang/Object"),     //3

                new CONSTANT_Class_info(null, 3),               //4

                new CONSTANT_Utf8_info("test"),                 //5

                new CONSTANT_Utf8_info("Ljava/lang/Object;"),   //6

                new CONSTANT_Utf8_info("ConstantValue"),        //7

            });

            ClassFile cf = new ClassFile(0xCAFEBABE,

                          0,

                          51,

                          cp,

                          new AccessFlags(AccessFlags.ACC_ABSTRACT |

                                          AccessFlags.ACC_INTERFACE |

                                          AccessFlags.ACC_PUBLIC),

                          2,

                          4,

                          new int[0],

                          new Field[] {

                              new Field(new AccessFlags(AccessFlags.ACC_PUBLIC |

                                                        AccessFlags.ACC_STATIC |

                                                        AccessFlags.ACC_FINAL),

                                        5,

                                      new Descriptor(6),

                                      new Attributes(cp, new Attribute[] {

                                          new ConstantValue_attribute(7, 6)

                                      }))

                          },

                          new Method[0],

                          new Attributes(cp, new Attribute[0]));

            try {

                JavaFileObject clazz = processingEnv.getFiler().createClassFile("Test");

                try (OutputStream out = clazz.openOutputStream()) {

                    new ClassWriter().write(cf, out);

                }

            } catch (IOException ex) {

                ex.printStackTrace();

            }

        }

        return false;

    }

    public SourceVersion getSupportedSourceVersion() {

        return SourceVersion.latest();

    }

    int round = 0;

}