jaroslav@106
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/**
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jaroslav@106
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* Back 2 Browser Bytecode Translator
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jaroslav@106
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* Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
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jaroslav@106
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*
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jaroslav@106
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* This program is free software: you can redistribute it and/or modify
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jaroslav@106
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* it under the terms of the GNU General Public License as published by
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jaroslav@106
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* the Free Software Foundation, version 2 of the License.
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jaroslav@106
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*
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jaroslav@106
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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jaroslav@106
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*
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jaroslav@106
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* You should have received a copy of the GNU General Public License
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* along with this program. Look for COPYING file in the top folder.
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* If not, see http://opensource.org/licenses/GPL-2.0.
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*/
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package org.apidesign.vm4brwsr;
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import org.apidesign.bck2brwsr.core.JavaScriptBody;
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/**
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*
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* @author Jaroslav Tulach <jtulach@netbeans.org>
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*/
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jaroslav@0
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public class StaticMethod {
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jaroslav@1472
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public static final int MISSING_CONSTANT = 1;
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jaroslav@9
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private static int cnt;
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jaroslav@173
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private static Object NULL;
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jaroslav@48
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jaroslav@48
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public static int minusOne() {
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jaroslav@48
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return -1;
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}
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jaroslav@9
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jaroslav@46
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public static Object none(int x, int y) {
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jaroslav@46
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Object toRet = null;
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for (int i = x; i < y; i++) {
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jaroslav@46
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if (i == 2) {
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toRet = null;
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} else {
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toRet = new Object();
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}
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}
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return toRet;
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}
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jaroslav@46
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jaroslav@173
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public static boolean isNull() {
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return NULL == null;
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jaroslav@173
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}
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jaroslav@173
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jaroslav@0
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public static int sum(int x, int y) {
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jaroslav@0
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return x + y;
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jaroslav@0
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}
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jaroslav@1
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public static float power(float x) {
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jaroslav@1
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return x * x;
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jaroslav@1
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}
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jaroslav@2
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public static double minus(double x, long y) {
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return x - y;
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jaroslav@2
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}
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jaroslav@3
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public static int div(byte c, double d) {
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jaroslav@3
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return (int)(d / c);
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jaroslav@3
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}
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jaroslav@3
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public static int mix(int a, long b, byte c, double d) {
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jaroslav@3
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return (int)((b / a + c) * d);
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}
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jaroslav@6
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public static long xor(int a, long b) {
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jaroslav@6
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return a ^ b;
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jaroslav@6
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}
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jaroslav@7
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public static long orOrAnd(boolean doOr, int a, int b) {
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jaroslav@7
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return doOr ? a | b : a & b;
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jaroslav@7
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}
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jaroslav@93
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public static int shiftLeft(int what, int much) {
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jaroslav@93
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return what << much;
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jaroslav@93
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}
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jaroslav@93
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public static int shiftArithmRight(int what, int much, boolean signed) {
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if (signed) {
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return what >> much;
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} else {
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return what >>> much;
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}
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}
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public static long factRec(int n) {
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jaroslav@4
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if (n <= 1) {
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jaroslav@4
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return 1;
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jaroslav@4
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} else {
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return n * factRec(n - MISSING_CONSTANT);
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}
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}
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jaroslav@5
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public static long factIter(int n) {
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jaroslav@5
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long res = 1;
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jaroslav@5
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for (int i = 2; i <= n; i++) {
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jaroslav@5
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res *= i;
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jaroslav@5
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}
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jaroslav@5
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return res;
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jaroslav@5
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}
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public static int inc4() {
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cnt++;
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cnt+=2;
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cnt++;
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return cnt;
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}
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jaroslav@94
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public static int helloWorldLength(String x) {
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return (StringSample.HELLO + x).length();
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}
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@JavaScriptBody(
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args={"i","j"}, body="\n\r\treturn (i + j).toString();"
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)
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public static String i2s(int i, int j) {
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throw new IllegalStateException();
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}
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jaroslav@97
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jaroslav@291
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public static String castNull(boolean n) {
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Object value = n ? null : "Ahoj";
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return (String)value;
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}
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public static String swtch(int what) {
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switch (what) {
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case 0: return "Jarda";
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case 1: return "Darda";
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case 2: return "Parda";
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default: return "Marda";
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}
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}
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public static String swtch2(int what) {
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switch (what) {
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case 0: return "Jarda";
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case 11: return "Darda";
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case 22: return "Parda";
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default: return "Marda";
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}
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}
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public static int castString(Object o) {
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return ((String)o).length();
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}
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public static int initInflater(int w, boolean nowrap) {
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Instance i = new Instance(w, 0.0);
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return i.sum(nowrap?-w:w, 1);
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}
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public static int intHolder() {
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return new IntHolder(new Integer(10)).i.intValue();
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}
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private static class IntHolder {
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Integer i;
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public IntHolder(Integer i) {
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this.i = i;
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}
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}
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public static String toStringArr() {
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jaroslav@1468
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class N implements Next {
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jaroslav@1468
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int idx = 0;
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jaroslav@1468
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jaroslav@1468
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@Override
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public boolean hasNext() {
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return idx < 5;
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}
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@Override
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public String next() {
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jaroslav@1468
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switch (idx++) {
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case 0: return "Zero";
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case 1: return "One";
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case 2: return "Two";
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case 3: return "Three";
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case 4: return "Four";
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}
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throw new IllegalStateException();
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}
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jaroslav@1468
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}
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return toString(null, new N()).toString();
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}
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jaroslav@1468
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jaroslav@1468
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static String toString(Object thiz, Next it) {
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jaroslav@1468
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if (!it.hasNext()) {
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jaroslav@1468
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return "[]";
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jaroslav@1468
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}
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jaroslav@1468
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jaroslav@1468
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StringBuilder sb = new StringBuilder();
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jaroslav@1468
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sb.append('[');
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jaroslav@1468
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for (;;) {
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String e = it.next();
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sb.append(e == thiz ? "(this Collection)" : e);
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if (!it.hasNext()) {
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return sb.append(']').toString();
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jaroslav@1468
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}
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sb.append(',').append(' ');
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}
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}
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jaroslav@1468
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static interface Next {
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jaroslav@1468
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boolean hasNext();
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jaroslav@1468
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String next();
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}
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static {
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jaroslav@97
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// check order of initializers
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jaroslav@97
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StaticUse.NON_NULL.equals(new Object());
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}
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jaroslav@0
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}
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