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/*

 * @test

 * @bug 8042251

 * @summary Testing InnerClasses_attribute of inner classes in local class.

 * @library /tools/lib /tools/javac/lib ../lib

 * @modules jdk.jdeps/com.sun.tools.classfile

 *          jdk.compiler/com.sun.tools.javac.api

 *          jdk.compiler/com.sun.tools.javac.main

 * @run main InnerClassesInLocalClassTest

 */

import java.util.*;

public class InnerClassesInLocalClassTest extends InnerClassesTestBase {

    private final static Modifier[] LOCAL_CLASS_MODIFIERS =

            new Modifier[]{Modifier.EMPTY, Modifier.ABSTRACT, Modifier.FINAL};

    private final static String CLASS_TEMPLATE =

            "public %CLASS% OuterClass {\n" +

            "%SOURCE%\n" +

            "}";

    private final List<Data> innerClassesData;

    public InnerClassesInLocalClassTest() {

        innerClassesData = new ArrayList<>();

        for (Modifier outerModifier : LOCAL_CLASS_MODIFIERS) {

            StringBuilder sb = new StringBuilder();

            sb.append(outerModifier.getString()).append(' ');

            sb.append("class Local {");

            Map<String, Set<String>> class2Flags = new HashMap<>();

            for (int i = 0; i < LOCAL_CLASS_MODIFIERS.length; ++i) {

                Modifier innerModifier = LOCAL_CLASS_MODIFIERS[i];

                sb.append(innerModifier.getString()).append(' ')

                        .append("class").append(' ')

                        .append('A').append(i).append("{}\n");

                class2Flags.put("A" + i, getFlags(innerModifier));

            }

            sb.append("};");

            class2Flags.put("1Local", getFlags(outerModifier));

            innerClassesData.add(new Data(sb.toString(), class2Flags));

        }

    }

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

        InnerClassesTestBase test = new InnerClassesInLocalClassTest();

        test.test("OuterClass$1Local", "1Local");

    }

    @Override

    public void setProperties() {

    }

    @Override

    public List<TestCase> generateTestCases() {

        List<TestCase> testCases = new ArrayList<>();

        testCases.addAll(localClassInClassMethod());

        testCases.addAll(localClassInInterfaceMethod());

        return testCases;

    }

    private List<TestCase> localClassInClassMethod() {

        List<TestCase> list = new ArrayList<>();

        String template = CLASS_TEMPLATE.replace("%CLASS%", "class");

        list.addAll(lambda(template));

        list.addAll(constructor(template));

        list.addAll(method(template,

                new Modifier[]{Modifier.EMPTY, Modifier.PRIVATE, Modifier.PROTECTED, Modifier.PUBLIC},

                new Modifier[]{Modifier.EMPTY, Modifier.FINAL, Modifier.STATIC}));

        list.addAll(staticAndInstanceInitializer(template));

        return list;

    }

    private List<TestCase> localClassInInterfaceMethod() {

        String template = CLASS_TEMPLATE.replace("%CLASS%", "interface");

        return method(template,

                new Modifier[]{Modifier.EMPTY, Modifier.PUBLIC},

                new Modifier[]{Modifier.DEFAULT, Modifier.STATIC});

    }

    private List<TestCase> generate(String template, String prefix, String suffix) {

        List<TestCase> list = new ArrayList<>();

        for (Data data : innerClassesData) {

            list.add(new TestCase(template.replace("%SOURCE%",

                    prefix + data.sources + suffix),

                    data.class2Flags));

        }

        return list;

    }

    private List<TestCase> lambda(String template) {

        return generate(template, "Runnable run = () -> {", "};");

    }

    private List<TestCase> constructor(String template) {

        List<TestCase> list = new ArrayList<>();

        for (Modifier modifier :

                new Modifier[]{Modifier.EMPTY, Modifier.PRIVATE, Modifier.PROTECTED, Modifier.PUBLIC}) {

            list.addAll(generate(template, modifier.getString() + " OuterClass() {", "}"));

        }

        return list;

    }

    private List<TestCase> method(String template, Modifier[] mods, Modifier[] otherMods) {

        List<TestCase> list = new ArrayList<>();

        for (Modifier modifier : mods) {

            for (Modifier otherMod : otherMods) {

                list.addAll(generate(template,

                        String.format("%s %s void method() {",

                                modifier.getString(),

                                otherMod.getString()),

                        "}"));

            }

        }

        return list;

    }

    private List<TestCase> staticAndInstanceInitializer(String template) {

        List<TestCase> list = new ArrayList<>();

        for (Modifier modifier : new Modifier[]{Modifier.EMPTY, Modifier.STATIC}) {

            list.addAll(generate(template, modifier.getString() + "{", "}"));

        }

        return list;

    }

    private Set<String> getFlags(Modifier modifier) {

        HashSet<String> set = new HashSet<>();

        if (modifier != Modifier.EMPTY) {

            set.add("ACC_" + modifier.getString().toUpperCase());

        }

        return set;

    }

    /**

     * Class represents part of sources which is inserted in other code.

     */

    private static class Data {

        public final String sources;

        public final Map<String, Set<String>> class2Flags;

        public Data(String sources, Map<String, Set<String>> class2Flags) {

            this.sources = sources;

            this.class2Flags = class2Flags;

        }

    }

}