/*
 *    Fernflower - The Analytical Java Decompiler
 *    http://www.reversed-java.com
 *
 *    (C) 2008 - 2010, Stiver
 *
 *    This software is NEITHER public domain NOR free software 
 *    as per GNU License. See license.txt for more details.
 *
 *    This software is distributed WITHOUT ANY WARRANTY; without 
 *    even the implied warranty of MERCHANTABILITY or FITNESS FOR 
 *    A PARTICULAR PURPOSE. 
 */

package de.fernflower.code.interpreter;

import de.fernflower.code.Instruction;
import de.fernflower.struct.StructClass;
import de.fernflower.struct.StructContext;


// FIXME: move to StructContext
public class Util {
	
	private static final String[][] runtime_exceptions = {
		
		null,			//		public final static int		opc_nop = 0;	
		null,			//		public final static int		opc_aconst_null = 1;
		null,			//		public final static int		opc_iconst_m1 = 2;   
		null,			//		public final static int		opc_iconst_0 = 3;    
		null,			//		public final static int		opc_iconst_1 = 4;    
		null,			//		public final static int		opc_iconst_2 = 5;    
		null, 			//		public final static int		opc_iconst_3 = 6;    
		null, 			//		public final static int		opc_iconst_4 = 7;	 
		null, 			//		public final static int		opc_iconst_5 = 8;    
		null, 			//		public final static int		opc_lconst_0 = 9;    
		null, 			//		public final static int		opc_lconst_1 = 10;    
		null,			//		public final static int		opc_fconst_0 = 11;    
		null,			//		public final static int		opc_fconst_1 = 12;    
		null,			//		public final static int		opc_fconst_2 = 13;    
		null,			//		public final static int		opc_dconst_0 = 14;    
		null,			//		public final static int		opc_dconst_1 = 15;    
		null,			//		public final static int		opc_bipush = 16;	
		null,			//		public final static int		opc_sipush = 17;	
		null, 			//		public final static int		opc_ldc = 18;		
		null, 			//		public final static int		opc_ldc_w = 19;		
		null, 			//		public final static int		opc_ldc2_w = 20;	
		null,			//		public final static int		opc_iload = 21;		
		null,			//		public final static int		opc_lload = 22;		
		null,			//		public final static int		opc_fload = 23;		
		null,			//		public final static int		opc_dload = 24;		
		null,			//		public final static int		opc_aload = 25;		
		null, 			//		public final static int		opc_iload_0 = 26;		
		null, 			//		public final static int		opc_iload_1 = 27;		
		null, 			//		public final static int		opc_iload_2 = 28;		
		null, 			//		public final static int		opc_iload_3 = 29;		
		null, 			//		public final static int		opc_lload_0 = 30;		
		null, 			//		public final static int		opc_lload_1 = 31;		
		null, 			//		public final static int		opc_lload_2 = 32;		
		null, 			//		public final static int		opc_lload_3 = 33;		
		null, 			//		public final static int		opc_fload_0 = 34;		
		null, 			//		public final static int		opc_fload_1 = 35;		
		null, 			//		public final static int		opc_fload_2 = 36;		
		null, 			//		public final static int		opc_fload_3 = 37;		
		null, 			//		public final static int		opc_dload_0 = 38;		
		null, 			//		public final static int		opc_dload_1 = 39;		
		null, 			//		public final static int		opc_dload_2 = 40;		
		null, 			//		public final static int		opc_dload_3 = 41;		
		null, 			//		public final static int		opc_aload_0 = 42;		
		null, 			//		public final static int		opc_aload_1 = 43;		
		null, 			//		public final static int		opc_aload_2 = 44;		
		null, 			//		public final static int		opc_aload_3 = 45;		
		{"java/lang/NullPointerException", "java/lang/ArrayIndexOutOfBoundsException"},			//		public final static int		opc_iaload = 46;		
		{"java/lang/NullPointerException", "java/lang/ArrayIndexOutOfBoundsException"},			//		public final static int		opc_laload = 47;		
		{"java/lang/NullPointerException", "java/lang/ArrayIndexOutOfBoundsException"},			//		public final static int		opc_faload = 48;		
		{"java/lang/NullPointerException", "java/lang/ArrayIndexOutOfBoundsException"},			//		public final static int		opc_daload = 49;		
		{"java/lang/NullPointerException", "java/lang/ArrayIndexOutOfBoundsException"},			//		public final static int		opc_aaload = 50;		
		{"java/lang/NullPointerException", "java/lang/ArrayIndexOutOfBoundsException"},			//		public final static int		opc_baload = 51;		
		{"java/lang/NullPointerException", "java/lang/ArrayIndexOutOfBoundsException"},			//		public final static int		opc_caload = 52;		
		{"java/lang/NullPointerException", "java/lang/ArrayIndexOutOfBoundsException"},			//		public final static int		opc_saload = 53;		
		null,			//		public final static int		opc_istore = 54;		
		null,			//		public final static int		opc_lstore = 55;		
		null,			//		public final static int		opc_fstore = 56;		
		null,			//		public final static int		opc_dstore = 57;		
		null,			//		public final static int		opc_astore = 58;		
		null, 			//		public final static int		opc_istore_0 = 59;		
		null, 			//		public final static int		opc_istore_1 = 60;		
		null, 			//		public final static int		opc_istore_2 = 61;		
		null, 			//		public final static int		opc_istore_3 = 62;		
		null, 			//		public final static int		opc_lstore_0 = 63;		
		null, 			//		public final static int		opc_lstore_1 = 64;		
		null, 			//		public final static int		opc_lstore_2 = 65;		
		null, 			//		public final static int		opc_lstore_3 = 66;		
		null, 			//		public final static int		opc_fstore_0 = 67;		
		null, 			//		public final static int		opc_fstore_1 = 68;		
		null, 			//		public final static int		opc_fstore_2 = 69;		
		null, 			//		public final static int		opc_fstore_3 = 70;		
		null, 			//		public final static int		opc_dstore_0 = 71;		
		null, 			//		public final static int		opc_dstore_1 = 72;		
		null, 			//		public final static int		opc_dstore_2 = 73;		
		null, 			//		public final static int		opc_dstore_3 = 74;		
		null, 			//		public final static int		opc_astore_0 = 75;		
		null, 			//		public final static int		opc_astore_1 = 76;		
		null, 			//		public final static int		opc_astore_2 = 77;		
		null, 			//		public final static int		opc_astore_3 = 78;		
		{"java/lang/NullPointerException", "java/lang/ArrayIndexOutOfBoundsException"},			//		public final static int		opc_iastore = 79;		
		{"java/lang/NullPointerException", "java/lang/ArrayIndexOutOfBoundsException"},			//		public final static int		opc_lastore = 80;		
		{"java/lang/NullPointerException", "java/lang/ArrayIndexOutOfBoundsException"},			//		public final static int		opc_fastore = 81;		
		{"java/lang/NullPointerException", "java/lang/ArrayIndexOutOfBoundsException"},			//		public final static int		opc_dastore = 82;		
		{"java/lang/NullPointerException", "java/lang/ArrayIndexOutOfBoundsException", "java/lang/ArrayStoreException"},			//		public final static int		opc_aastore = 83;		
		{"java/lang/NullPointerException", "java/lang/ArrayIndexOutOfBoundsException"},			//		public final static int		opc_bastore = 84;		
		{"java/lang/NullPointerException", "java/lang/ArrayIndexOutOfBoundsException"},			//		public final static int		opc_castore = 85;		
		{"java/lang/NullPointerException", "java/lang/ArrayIndexOutOfBoundsException"},			//		public final static int		opc_sastore = 86;		
		null,			//		public final static int		opc_pop = 87;		
		null,			//		public final static int		opc_pop2 = 88;		
		null, 			//		public final static int		opc_dup = 89;		
		null, 			//		public final static int		opc_dup_x1 = 90;		
		null, 			//		public final static int		opc_dup_x2 = 91;		
		null, 			//		public final static int		opc_dup2 = 92;		
		null, 			//		public final static int		opc_dup2_x1 = 93;		
		null, 			//		public final static int		opc_dup2_x2 = 94;		
		null, 			//		public final static int		opc_swap = 95;		
		null,			//		public final static int		opc_iadd = 96;		
		null,			//		public final static int		opc_ladd = 97;		
		null,			//		public final static int		opc_fadd = 98;		
		null,			//		public final static int		opc_dadd = 99;		
		null,			//		public final static int		opc_isub = 100;		
		null,			//		public final static int		opc_lsub = 101;		
		null,			//		public final static int		opc_fsub = 102;		
		null,			//		public final static int		opc_dsub = 103;		
		null,			//		public final static int		opc_imul = 104;		
		null,			//		public final static int		opc_lmul = 105;		
		null,			//		public final static int		opc_fmul = 106;		
		null,			//		public final static int		opc_dmul = 107;		
		{"java/lang/ArithmeticException"},			//		public final static int		opc_idiv = 108;		
		{"java/lang/ArithmeticException"},			//		public final static int		opc_ldiv = 109;		
		null,			//		public final static int		opc_fdiv = 110;		
		null,			//		public final static int		opc_ddiv = 111;		
		{"java/lang/ArithmeticException"},			//		public final static int		opc_irem = 112;		
		{"java/lang/ArithmeticException"},			//		public final static int		opc_lrem = 113;		
		null,			//		public final static int		opc_frem = 114;		
		null,			//		public final static int		opc_drem = 115;		
		null,			//		public final static int		opc_ineg = 116;		
		null,			//		public final static int		opc_lneg = 117;		
		null,			//		public final static int		opc_fneg = 118;		
		null,			//		public final static int		opc_dneg = 119;		
		null,			//		public final static int		opc_ishl = 120;		
		null,			//		public final static int		opc_lshl = 121;		
		null,			//		public final static int		opc_ishr = 122;		
		null,			//		public final static int		opc_lshr = 123;		
		null,			//		public final static int		opc_iushr = 124;		
		null,			//		public final static int		opc_lushr = 125;		
		null,			//		public final static int		opc_iand = 126;		
		null,			//		public final static int		opc_land = 127;		
		null,			//		public final static int		opc_ior = 128;		
		null,			//		public final static int		opc_lor = 129;		
		null,			//		public final static int		opc_ixor = 130;		
		null,			//		public final static int		opc_lxor = 131;		
		null,			//		public final static int		opc_iinc = 132;		
		null,			//		public final static int		opc_i2l = 133;		
		null,			//		public final static int		opc_i2f = 134;		
		null,			//		public final static int		opc_i2d = 135;		
		null,			//		public final static int		opc_l2i = 136;		
		null,			//		public final static int		opc_l2f = 137;		
		null,			//		public final static int		opc_l2d = 138;		
		null,			//		public final static int		opc_f2i = 139;		
		null,			//		public final static int		opc_f2l = 140;		
		null,			//		public final static int		opc_f2d = 141;		
		null,			//		public final static int		opc_d2i = 142;		
		null,			//		public final static int		opc_d2l = 143;		
		null,			//		public final static int		opc_d2f = 144;		
		null,			//		public final static int		opc_i2b = 145;		
		null,			//		public final static int		opc_i2c = 146;		
		null,			//		public final static int		opc_i2s = 147;		
		null,			//		public final static int		opc_lcmp = 148;		
		null,			//		public final static int		opc_fcmpl = 149;		
		null,			//		public final static int		opc_fcmpg = 150;		
		null,			//		public final static int		opc_dcmpl = 151;		
		null,			//		public final static int		opc_dcmpg = 152;		
		null,			//		public final static int		opc_ifeq = 153;		
		null,			//		public final static int		opc_ifne = 154;		
		null,			//		public final static int		opc_iflt = 155;		
		null,			//		public final static int		opc_ifge = 156;		
		null,			//		public final static int		opc_ifgt = 157;		
		null,			//		public final static int		opc_ifle = 158;		
		null,			//		public final static int		opc_if_icmpeq = 159;		
		null,			//		public final static int		opc_if_icmpne = 160;		
		null,			//		public final static int		opc_if_icmplt = 161;		
		null,			//		public final static int		opc_if_icmpge = 162;		
		null,			//		public final static int		opc_if_icmpgt = 163;		
		null,			//		public final static int		opc_if_icmple = 164;		
		null,			//		public final static int		opc_if_acmpeq = 165;		
		null,			//		public final static int		opc_if_acmpne = 166;		
		null,			//		public final static int		opc_goto = 167;				
		null,			//		public final static int		opc_jsr = 168;				
		null,			//		public final static int		opc_ret = 169;				
		null,			//		public final static int		opc_tableswitch = 170;		
		null,			//		public final static int		opc_lookupswitch = 171;		
		{"java/lang/IllegalMonitorStateException"},			//		public final static int		opc_ireturn = 172;			
		{"java/lang/IllegalMonitorStateException"},			//		public final static int		opc_lreturn = 173;			
		{"java/lang/IllegalMonitorStateException"},			//		public final static int		opc_freturn = 174;			
		{"java/lang/IllegalMonitorStateException"},			//		public final static int		opc_dreturn = 175;			
		{"java/lang/IllegalMonitorStateException"},			//		public final static int		opc_areturn = 176;			
		{"java/lang/IllegalMonitorStateException"},			//		public final static int		opc_return = 177;			
		null, 			//		public final static int		opc_getstatic = 178;		
		null, 			//		public final static int		opc_putstatic = 179;		
		{"java/lang/NullPointerException"}, 			//		public final static int		opc_getfield = 180;			
		{"java/lang/NullPointerException"}, 			//		public final static int		opc_putfield = 181;			
		{"java/lang/NullPointerException", "java/lang/AbstractMethodError", "java/lang/UnsatisfiedLinkError"}, 			//		public final static int		opc_invokevirtual = 182;	
		{"java/lang/NullPointerException", "java/lang/UnsatisfiedLinkError"}, 			//		public final static int		opc_invokespecial = 183;	
		{"java/lang/UnsatisfiedLinkError"}, 			//		public final static int		opc_invokestatic = 184;		
		{"java/lang/NullPointerException", "java/lang/IncompatibleClassChangeError", "java/lang/IllegalAccessError", "java/lang/java/lang/AbstractMethodError", "java/lang/UnsatisfiedLinkError"}, 			//		public final static int		opc_invokeinterface = 185;	
		null, 			//		public final static int		opc_xxxunusedxxx = 186;		
		null,			//		public final static int		opc_new = 187;				
		{"java/lang/NegativeArraySizeException"},			//		public final static int		opc_newarray = 188;			
		{"java/lang/NegativeArraySizeException"},			//		public final static int		opc_anewarray = 189;		
		{"java/lang/NullPointerException"},			//		public final static int		opc_arraylength = 190;		
		{"java/lang/NullPointerException", "java/lang/IllegalMonitorStateException"},			//		public final static int		opc_athrow = 191;			
		{"java/lang/ClassCastException"},			//		public final static int		opc_checkcast = 192;		
		null,			//		public final static int		opc_instanceof = 193;		
		{"java/lang/NullPointerException"},			//		public final static int		opc_monitorenter = 194;		
		{"java/lang/NullPointerException", "java/lang/IllegalMonitorStateException"},			//		public final static int		opc_monitorexit = 195;		
		null, 			//		public final static int		opc_wide = 196;				
		{"java/lang/NegativeArraySizeException"}, 			//		public final static int		opc_multianewarray = 197;	
		null,			//		public final static int		opc_ifnull = 198;			
		null,			//		public final static int		opc_ifnonnull = 199;		
		null,			//		public final static int		opc_goto_w = 200;			
		null,			//		public final static int		opc_jsr_w = 201;			
	};
	
	
	public static boolean instanceOf(StructContext context, String valclass, String refclass) {
		
		if(valclass.equals(refclass)) {
			return true;
		}
		
		StructClass cl = context.getClass(valclass);
		if(cl==null) {
			return false;
		}
		
		if(cl.superClass!=null && instanceOf(context, cl.superClass.getString(), refclass)) {
			return true;
		}
		
		int[] interfaces = cl.getInterfaces();
		for(int i=0;i<interfaces.length;i++) {
			String intfc = cl.getPool().getPrimitiveConstant(interfaces[i]).getString();
			
			if(instanceOf(context, intfc, refclass)) {
				return true;
			}
		}
		
		return false;
	}

	
	public static String[] getRuntimeExceptions(Instruction instr) {
		return runtime_exceptions[instr.opcode];  
	}
	

}
