jaroslav@106: /**
jaroslav@106:  * Back 2 Browser Bytecode Translator
jaroslav@106:  * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
jaroslav@106:  *
jaroslav@106:  * This program is free software: you can redistribute it and/or modify
jaroslav@106:  * it under the terms of the GNU General Public License as published by
jaroslav@106:  * the Free Software Foundation, version 2 of the License.
jaroslav@106:  *
jaroslav@106:  * This program is distributed in the hope that it will be useful,
jaroslav@106:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
jaroslav@106:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
jaroslav@106:  * GNU General Public License for more details.
jaroslav@106:  *
jaroslav@106:  * You should have received a copy of the GNU General Public License
jaroslav@106:  * along with this program. Look for COPYING file in the top folder.
jaroslav@106:  * If not, see http://opensource.org/licenses/GPL-2.0.
jaroslav@106:  */
jaroslav@22: package org.apidesign.vm4brwsr;
jaroslav@0: 
jaroslav@94: import org.apidesign.bck2brwsr.core.JavaScriptBody;
jaroslav@94: 
jaroslav@0: /**
jaroslav@0:  *
jaroslav@0:  * @author Jaroslav Tulach <jtulach@netbeans.org>
jaroslav@0:  */
jaroslav@0: public class StaticMethod {
jaroslav@9:     private static int cnt;
jaroslav@173:     private static Object NULL;
jaroslav@48: 
jaroslav@48:     public static int minusOne() {
jaroslav@48:         return -1;
jaroslav@48:     }
jaroslav@9:     
jaroslav@46:     public static Object none(int x, int y) {
jaroslav@46:         Object toRet = null;
jaroslav@46:         for (int i = x; i < y; i++) {
jaroslav@46:             if (i == 2) {
jaroslav@46:                 toRet = null;
jaroslav@46:             } else {
jaroslav@46:                 toRet = new Object();
jaroslav@46:             }
jaroslav@46:         }
jaroslav@46:         return toRet;
jaroslav@46:     }
jaroslav@46:     
jaroslav@173:     public static boolean isNull() {
jaroslav@173:         return NULL == null;
jaroslav@173:     }
jaroslav@173:     
jaroslav@0:     public static int sum(int x, int y) {
jaroslav@0:         return x + y;
jaroslav@0:     }
jaroslav@1:     public static float power(float x) {
jaroslav@1:         return x * x;
jaroslav@1:     }
jaroslav@2:     public static double minus(double x, long y) {
jaroslav@2:         return x - y;
jaroslav@2:     }
jaroslav@3:     public static int div(byte c, double d) {
jaroslav@3:         return (int)(d / c);
jaroslav@3:     }
jaroslav@3:     public static int mix(int a, long b, byte c, double d) {
jaroslav@3:         return (int)((b / a + c) * d);
jaroslav@3:     }
jaroslav@6:     public static long xor(int a, long b) {
jaroslav@6:         return a ^ b;
jaroslav@6:     }
jaroslav@7:     public static long orOrAnd(boolean doOr, int a, int b) {
jaroslav@7:         return doOr ? a | b : a & b;
jaroslav@7:     }
jaroslav@93:     public static int shiftLeft(int what, int much) {
jaroslav@93:         return what << much;
jaroslav@93:     }
jaroslav@93:     public static int shiftArithmRight(int what, int much, boolean signed) {
jaroslav@93:         if (signed) {
jaroslav@93:             return what >> much;
jaroslav@93:         } else {
jaroslav@93:             return what >>> much;
jaroslav@93:         }
jaroslav@93:     }
jaroslav@4:     public static long factRec(int n) {
jaroslav@4:         if (n <= 1) {
jaroslav@4:             return 1;
jaroslav@4:         } else {
jaroslav@4:             return n * factRec(n - 1);
jaroslav@4:         }
jaroslav@4:     }
jaroslav@5:     public static long factIter(int n) {
jaroslav@5:         long res = 1;
jaroslav@5:         for (int i = 2; i <= n; i++) {
jaroslav@5:             res *= i;
jaroslav@5:         }
jaroslav@5:         return res;
jaroslav@5:     }
jaroslav@9:     public static int inc4() {
jaroslav@9:         cnt++;
jaroslav@9:         cnt+=2;
jaroslav@9:         cnt++;
jaroslav@9:         return cnt;
jaroslav@9:     }
jaroslav@94:     
jaroslav@94:     @JavaScriptBody(
jtulach@161:         args={"i","j"}, body="\n\r\treturn (i + j).toString();"
jaroslav@94:     )
jaroslav@99:     public static String i2s(int i, int j) {
jaroslav@94:         throw new IllegalStateException();
jaroslav@94:     }
jaroslav@97:     
jaroslav@291:     public static String castNull(boolean n) {
jaroslav@291:         Object value = n ? null : "Ahoj";
jaroslav@291:         return (String)value;
jaroslav@291:     }
jaroslav@291:     
jaroslav@115:     public static String swtch(int what) {
jaroslav@115:         switch (what) {
jaroslav@115:             case 0: return "Jarda";
jaroslav@115:             case 1: return "Darda";
jaroslav@115:             case 2: return "Parda";
jaroslav@115:             default: return "Marda";
jaroslav@115:         }
jaroslav@115:     }
jaroslav@115:     public static String swtch2(int what) {
jaroslav@115:         switch (what) {
jaroslav@115:             case 0: return "Jarda";
jaroslav@115:             case 11: return "Darda";
jaroslav@115:             case 22: return "Parda";
jaroslav@115:             default: return "Marda";
jaroslav@115:         }
jaroslav@115:     }
jaroslav@115:     
jaroslav@97:     static {
jaroslav@97:         // check order of initializers
jaroslav@97:         StaticUse.NON_NULL.equals(new Object());
jaroslav@97:     }
jaroslav@0: }