/**

 * Back 2 Browser Bytecode Translator

 * Copyright (C) 2012-2015 Jaroslav Tulach <jaroslav.tulach@apidesign.org>

 *

 * This program is free software: you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation, version 2 of the License.

 *

 * This program 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 for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program. Look for COPYING file in the top folder.

 * If not, see http://opensource.org/licenses/GPL-2.0.

 */

package org.apidesign.vm4brwsr;

import org.apidesign.bck2brwsr.core.JavaScriptBody;

/**

 *

 * @author Jaroslav Tulach <jtulach@netbeans.org>

 */

public class Array {

    byte[] bytes = { 1 };

    short[] shorts = { 2, 3 };

    int[] ints = { 4, 5, 6 };

    float[] floats = { 7, 8, 9, 10 };

    double[][] doubles = { {11}, {12}, {13}, {14}, {15} };

    char[] chars = { 'a', 'b' };

    private Array() {

    }

    byte bytes() {

        return bytes[0];

    }

    short shorts() {

        return shorts[1];

    }

    int[] ints() {

        return ints;

    }

    float floats() {

        return floats[3];

    }

    double doubles() {

        return doubles[4][0];

    }

    static double[][] dbls = new double[1][2];

    public static double twoDoubles() {

        return dbls[0][0] + dbls[0][0];

    }

    static int[][] tints = new int[1][2];

    public static int twoInts() {

        return tints[0][0] + tints[0][0];

    }

    private static final Array[] ARR = { new Array(), new Array(), new Array() };

    private static Array[][] arr() {

        Array[][] matrix = new Array[3][3];

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

            matrix[i][i] = ARR[i];

        }

        return matrix;

    }

    private static <T> T[] filter(T[] in) {

        return in;

    }

    public static double sum() {

        disableClassForName();

        double sum = 0.0;

        for (Array[] row : arr()) {

            int indx = -1;

            for (Array a : row) {

                indx++;

                if (a == null) {

                    continue;

                }

                sum += a.bytes();

                sum += a.shorts();

                sum += a.ints()[2];

                sum += a.floats();

                sum += filter(row)[indx].doubles();

            }

        }

        return sum;

    }

    private static final int[] arr = { 0, 1, 2, 3, 4, 5 };

    public static int simple(boolean clone) {

        int[] ar;

        if (clone) {

            ar = arr.clone();

        } else {

            ar = arr;

        }

        int sum = 0;

        for (int a : ar) {

            sum += a;

        }

        return sum;

    }

    public static String objectArrayClass() {

        enableClassForName(prevClassForName);

        prevClassForName = null;

        String s = Object[].class.getName();

        disableClassForName();

        return s;

    }

    public static boolean instanceOfArray(Object obj) {

        if ("string-array".equals(obj)) {

            obj = new String[] { "Ahoj" };

        }

        return obj instanceof Object[];

    }

    public static boolean castArray(int type) {

        try {

            Object orig = new Object();

            Object res = orig;

            if (type == 0) {

                Object[] arr = new Integer[1];

                String[] str = (String[]) arr;

                res = str;

            }

            if (type == 1) {

                Object[] arr = null;

                String[] str = (String[]) arr;

                res = str;

            }

            if (type == 2) {

                Object[] arr = new String[1];

                String[] str = (String[]) arr;

                res = str;

            }

            if (type == 3) {

                Object[] arr = new String[1];

                CharSequence[] str = (CharSequence[]) arr;

                res = str;

            }

            return res != orig;

        } catch (ClassCastException ex) {

            return false;

        }

    }

    public static int sum(int size) {

        int[] arr = new int[size];

        return arr[0] + arr[1];

    }

    static void arraycopy(char[] value, int srcBegin, char[] dst, int dstBegin, int count) {

        while (count-- > 0) {

            dst[dstBegin++] = value[srcBegin++];

        }

    }

    public static char copyArray() {

        char[] arr = { '0' };

        arraycopy(arr()[0][0].chars, 0, arr, 0, 1);

        return arr[0];

    }

    @JavaScriptBody(args = {  }, body = 

        "var prev = vm.java_lang_Class(false).forName__Ljava_lang_Class_2Ljava_lang_String_2;\n"

      + "if (!prev) throw 'forName not defined';\n"

      + "vm.java_lang_Class(false).forName__Ljava_lang_Class_2Ljava_lang_String_2 = function(s) {\n"

      + "  throw 'Do not call me: ' + s;\n"

      + "};\n"

      + "return prev;\n")

    private static Object disableClassForNameImpl() {

        return null;

    }

    private static void disableClassForName() {

        if (prevClassForName == null) {

            prevClassForName = disableClassForNameImpl();

        }

    }

    @JavaScriptBody(args = { "fn" }, body = 

        "if (fn !== null) vm.java_lang_Class(false).forName__Ljava_lang_Class_2Ljava_lang_String_2 = fn;"

    )

    private static void enableClassForName(Object fn) {

    }

    private static Object prevClassForName;

    public static String nameOfClonedComponent() {

        disableClassForName();

        Object[] intArr = new Integer[10];

        intArr = intArr.clone();

        return intArr.getClass().getComponentType().getName();

    }

    public static int multiLen() {

        return new int[1][0].length;

    }

    @JavaScriptBody(args = { "arr" }, body = 

        "var cnt = '';\n" +

        "if (arr === null) arr = [];\n" +

        "for (var i in arr) { cnt += i; }\n" +

        "return cnt;\n"

    )

    private static native String iterateArray(Object[] arr);

    public static String iterateArray(boolean javaArray) {

        return iterateArray(javaArray ? new String[0] : null);

    }

    enum ShapeType {

        ZERO, ONE;

    }

    private static void addType(int[][] table, ShapeType type1, ShapeType type2, int value) {

        table[type1.ordinal()][type2.ordinal()] = value;

    }

    public static int sumTable() {

        int[][] arr = { { 99, 99 }, { 999, 999 }};

        addType(arr, ShapeType.ZERO, ShapeType.ZERO, 0);

        addType(arr, ShapeType.ZERO, ShapeType.ONE, 1);

        addType(arr, ShapeType.ONE, ShapeType.ZERO, 1);

        addType(arr, ShapeType.ONE, ShapeType.ONE, 2);

        int sum = 0;

        for (int[] row : arr) {

            for (int i : row) {

                sum += i;

            }

        }

        return sum;

    }

    private static int inc(int v) {

        return v + 1;

    }

    public static int plusOrd() {

        return inc(ShapeType.ZERO.ordinal()) + inc(ShapeType.ONE.ordinal());

    }

}