/*

 * Copyright (c) 2009, 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.

 */

/*

 * @test

 * @summary Verify type annotation on binding patterns

 * @library /tools/lib

 * @modules java.compiler

 *          jdk.jdeps/com.sun.tools.javap

 * @build toolbox.JavapTask

 * @compile --enable-preview -source ${jdk.version} Patterns.java

 * @run main/othervm --enable-preview Patterns

 */

import java.lang.annotation.*;

import java.util.regex.Matcher;

import java.util.regex.Pattern;

import java.util.stream.Collectors;

import toolbox.JavapTask;

import toolbox.Task;

import toolbox.ToolBox;

public class Patterns {

    private ToolBox tb = new ToolBox();

    public static void main(String[] args) throws Exception {

        new Patterns().run();

    }

    public void run() throws Exception {

        String out = new JavapTask(tb)

                .options("-private",

                         "-verbose")

                .classpath(System.getProperty("test.classes"))

                .classes("Patterns$SimpleBindingPattern")

                .run()

                .getOutputLines(Task.OutputKind.DIRECT)

                .stream()

                .collect(Collectors.joining("\n"));

        String constantPool = out.substring(0, out.indexOf('{'));

        out = out.replaceAll("(?ms) *Code:.*?\n( *RuntimeInvisibleTypeAnnotations:)", "$1");

        out = out.substring(out.indexOf('{'));

        out = out.substring(0, out.lastIndexOf('}') + 1);

        String A = snipCPNumber(constantPool, "LPatterns$SimpleBindingPattern$A;");

        String CA = snipCPNumber(constantPool, "LPatterns$SimpleBindingPattern$CA;");

        String value = snipCPNumber(constantPool, "value");

        String expected = """

                          {

                            private static final java.lang.Object o;

                              descriptor: Ljava/lang/Object;

                              flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL

                            private static final boolean B1s;

                              descriptor: Z

                              flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL

                            private static final boolean B1m;

                              descriptor: Z

                              flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL

                            private final boolean B2s;

                              descriptor: Z

                              flags: (0x0012) ACC_PRIVATE, ACC_FINAL

                            private final boolean B2m;

                              descriptor: Z

                              flags: (0x0012) ACC_PRIVATE, ACC_FINAL

                            public Patterns$SimpleBindingPattern();

                              descriptor: ()V

                              flags: (0x0001) ACC_PUBLIC

                                RuntimeInvisibleTypeAnnotations:

                                  0: #_A_(): LOCAL_VARIABLE, {start_pc=257, length=18, index=2}

                                    Patterns$SimpleBindingPattern$A

                                  1: #_CA_(#_value_=[@#_A_(),@#_A_()]): LOCAL_VARIABLE, {start_pc=297, length=19, index=3}

                                    Patterns$SimpleBindingPattern$CA(

                                      value=[@Patterns$SimpleBindingPattern$A,@Patterns$SimpleBindingPattern$A]

                                    )

                                  2: #_A_(): LOCAL_VARIABLE, {start_pc=22, length=18, index=1}

                                    Patterns$SimpleBindingPattern$A

                                  3: #_CA_(#_value_=[@#_A_(),@#_A_()]): LOCAL_VARIABLE, {start_pc=62, length=18, index=1}

                                    Patterns$SimpleBindingPattern$CA(

                                      value=[@Patterns$SimpleBindingPattern$A,@Patterns$SimpleBindingPattern$A]

                                    )

                                  4: #_A_(): LOCAL_VARIABLE, {start_pc=101, length=18, index=2}

                                    Patterns$SimpleBindingPattern$A

                                  5: #_CA_(#_value_=[@#_A_(),@#_A_()]): LOCAL_VARIABLE, {start_pc=141, length=19, index=3}

                                    Patterns$SimpleBindingPattern$CA(

                                      value=[@Patterns$SimpleBindingPattern$A,@Patterns$SimpleBindingPattern$A]

                                    )

                                  6: #_A_(): LOCAL_VARIABLE, {start_pc=179, length=18, index=2}

                                    Patterns$SimpleBindingPattern$A

                                  7: #_CA_(#_value_=[@#_A_(),@#_A_()]): LOCAL_VARIABLE, {start_pc=219, length=19, index=3}

                                    Patterns$SimpleBindingPattern$CA(

                                      value=[@Patterns$SimpleBindingPattern$A,@Patterns$SimpleBindingPattern$A]

                                    )

                            void testPatterns();

                              descriptor: ()V

                              flags: (0x0000)

                                RuntimeInvisibleTypeAnnotations:

                                  0: #_A_(): LOCAL_VARIABLE, {start_pc=17, length=18, index=2}

                                    Patterns$SimpleBindingPattern$A

                                  1: #_CA_(#_value_=[@#_A_(),@#_A_()]): LOCAL_VARIABLE, {start_pc=57, length=19, index=3}

                                    Patterns$SimpleBindingPattern$CA(

                                      value=[@Patterns$SimpleBindingPattern$A,@Patterns$SimpleBindingPattern$A]

                                    )

                            void testPatternsDesugared();

                              descriptor: ()V

                              flags: (0x0000)

                                RuntimeInvisibleTypeAnnotations:

                                  0: #_A_(): LOCAL_VARIABLE, {start_pc=17, length=15, index=1; start_pc=51, length=15, index=1}

                                    Patterns$SimpleBindingPattern$A

                            static {};

                              descriptor: ()V

                              flags: (0x0008) ACC_STATIC

                                RuntimeInvisibleTypeAnnotations:

                                  0: #_A_(): LOCAL_VARIABLE, {start_pc=22, length=18, index=0}

                                    Patterns$SimpleBindingPattern$A

                                  1: #_CA_(#_value_=[@#_A_(),@#_A_()]): LOCAL_VARIABLE, {start_pc=61, length=18, index=0}

                                    Patterns$SimpleBindingPattern$CA(

                                      value=[@Patterns$SimpleBindingPattern$A,@Patterns$SimpleBindingPattern$A]

                                    )

                                  2: #_A_(): LOCAL_VARIABLE, {start_pc=100, length=18, index=1}

                                    Patterns$SimpleBindingPattern$A

                                  3: #_CA_(#_value_=[@#_A_(),@#_A_()]): LOCAL_VARIABLE, {start_pc=137, length=18, index=2}

                                    Patterns$SimpleBindingPattern$CA(

                                      value=[@Patterns$SimpleBindingPattern$A,@Patterns$SimpleBindingPattern$A]

                                    )

                          }""".replace("_A_", A).replace("_CA_", CA).replace("_value_", value);

        if (!expected.equals(out)) {

            throw new AssertionError("Unexpected output:\n" + out + "\nexpected:\n" + expected);

        }

    }

    private String snipCPNumber(String constantPool, String expectedConstant) {

        Matcher m = Pattern.compile("#([0-9]+).*" + Pattern.quote(expectedConstant))

                           .matcher(constantPool);

        if (!m.find()) {

            throw new AssertionError("Cannot find constant pool item");

        }

        return m.group(1);

    }

    /*********************** Test class *************************/

    static class SimpleBindingPattern {

        @Target(ElementType.TYPE_USE)

        @Repeatable(CA.class)

        @interface A {}

        @Target(ElementType.TYPE_USE)

        @interface CA {

            public A[] value();

        }

        private static final Object o = "";

        private static final boolean B1s = o instanceof @A String s && s.isEmpty();

        private static final boolean B1m = o instanceof @A @A String s && s.isEmpty();

        private final boolean B2s = o instanceof @A String s && s.isEmpty();

        private final boolean B2m = o instanceof @A @A String s && s.isEmpty();

        static {

            boolean B3s = o instanceof @A String s && s.isEmpty();

            boolean B3m = o instanceof @A @A String s && s.isEmpty();

        }

        {

            boolean B4s = o instanceof @A String s && s.isEmpty();

            boolean B4m = o instanceof @A @A String s && s.isEmpty();

        }

        {

            boolean B5s = o instanceof @A String s && s.isEmpty();

            boolean B5m = o instanceof @A @A String s && s.isEmpty();

        }

        public SimpleBindingPattern() {

            boolean B6s = o instanceof @A String s && s.isEmpty();

            boolean B6m = o instanceof @A @A String s && s.isEmpty();

        }

        void testPatterns() {

            boolean B7s = o instanceof @A String s && s.isEmpty();

            boolean B7m = o instanceof @A @A String s && s.isEmpty();

        }

        void testPatternsDesugared() {

            @A String s;

            boolean B8s = o instanceof String && (s = (String) o) == s && s.isEmpty();

            boolean B8sx = o instanceof String && (s = (String) o) == s && s.isEmpty();

        }

    }

}