/*
 * Copyright (c) 2012, 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.*;

// Exercise JavaCritical native method signatures

public class Generate {
    public static void main(String[] args) throws Exception {
        PrintStream j = new PrintStream(new FileOutputStream("JNITest.java"));
        generateJava(j);
        j.close();
        j = new PrintStream(new FileOutputStream("JNITest.c"));
        generateJNI(j);
        generateJavaCritical(j);
        j.close();
    }

    static void generateJava(PrintStream out) {
        out.println("public class JNITest {");
        for (int i = 0; i < 255; i++) {
            out.printf("  static native void nativeTest%d(", i);
            for (int b = 0; b < 8; b++) {
                out.printf("%s a%d", (i & (1 << b)) == 0 ? "int" : "byte[]", b);
                if (b < 7) {
                    out.print(", ");
                } else {
                    out.println(");");
                }
            }
        }
        out.println("  static byte[] array0 = new byte[1024];");
        out.println("  static {");
        out.println("    System.loadLibrary(\"jnitest\");");
        out.println("  }");

        out.println("  public static void main(String[] args) {");
        out.println("    for (int i = 0; i < 20000; i++) {");
        for (int i = 0; i < 255; i++) {
            out.printf("      nativeTest%d(", i);
            for (int b = 0; b < 8; b++) {
                if ((i & (1 << b)) == 0) {
                    out.printf("(0xfeafd00f + %d)", b);
                } else {
                    out.printf("array0");
                }
                if (b < 7) {
                    out.print(", ");
                } else {
                    out.println(");");
                }
            }
        }
        out.println("    }");
        out.println("  }");
        out.println("}");
    }

    static void generateJNI(PrintStream out) {
        out.println("#include \"JNITest.h\"");
        out.println();
        for (int i = 0; i < 255; i++) {
            out.printf("JNIEXPORT void JNICALL Java_JNITest_nativeTest%d(JNIEnv* env, jclass cl, ", i);
            for (int b = 0; b < 8; b++) {
                out.printf("%s a%d", (i & (1 << b)) == 0 ? "jint" : "jbyteArray", b);
                if (b < 7) {
                    out.print(", ");
                } else {
                    out.println(") {\n}\n\n");
                }
            }
        }
    }

    static void generateJavaCritical(PrintStream out) {
        for (int i = 0; i < 255; i++) {
            out.printf("JNIEXPORT void JNICALL JavaCritical_JNITest_nativeTest%d(", i);
            for (int b = 0; b < 8; b++) {
                if ((i & (1 << b)) == 0) {
                    out.printf("%s a%d", "jint", b);
                } else {
                    out.printf("int a%dlen, %s a%d", b, "jbyte*", b);
                }
                if (b < 7) {
                    out.print(", ");
                } else {
                    out.println(") {\n");
                }
            }
            for (int b = 0; b < 8; b++) {
                if ((i & (1 << b)) == 0) {
                    out.printf("  if (a%d != 0x%x) fprintf(stderr, \"a%d %%d != %d in nativeTest%d\\n\", a%d);\n",
                               b, b + 0xfeafd00f, b, b + 0xfeafd00f, i, b);
                } else {
                    out.printf("  a%d[0] = 1;\n", b);
                }
            }
            out.println("}\n\n");

        }
    }
}