hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeParser.java@f19f17f8f8dc

     1 /*

     2  * Copyright (c) 2002, 2004, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

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

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    25 package org.apidesign.vm4brwsr;

    27 import java.io.ByteArrayInputStream;

    28 import java.io.DataInputStream;

    29 import java.io.IOException;

    30 import java.io.InputStream;

    31 import org.apidesign.bck2brwsr.core.JavaScriptBody;

    32 import org.apidesign.bck2brwsr.core.JavaScriptPrototype;

    34 /** This is a byte code parser heavily based on original code of JavaP utility.

    35  * As such I decided to keep the original Oracle's GPLv2 header.

    36  *

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

    38  */

    39 final class ByteCodeParser {

    40     private ByteCodeParser() {

    41     }

    42     /* Signature Characters */

    43     public static final char   SIGC_VOID                  = 'V';

    44     public static final String SIG_VOID                   = "V";

    45     public static final char   SIGC_BOOLEAN               = 'Z';

    46     public static final String SIG_BOOLEAN                = "Z";

    47     public static final char   SIGC_BYTE                  = 'B';

    48     public static final String SIG_BYTE                   = "B";

    49     public static final char   SIGC_CHAR                  = 'C';

    50     public static final String SIG_CHAR                   = "C";

    51     public static final char   SIGC_SHORT                 = 'S';

    52     public static final String SIG_SHORT                  = "S";

    53     public static final char   SIGC_INT                   = 'I';

    54     public static final String SIG_INT                    = "I";

    55     public static final char   SIGC_LONG                  = 'J';

    56     public static final String SIG_LONG                   = "J";

    57     public static final char   SIGC_FLOAT                 = 'F';

    58     public static final String SIG_FLOAT                  = "F";

    59     public static final char   SIGC_DOUBLE                = 'D';

    60     public static final String SIG_DOUBLE                 = "D";

    61     public static final char   SIGC_ARRAY                 = '[';

    62     public static final String SIG_ARRAY                  = "[";

    63     public static final char   SIGC_CLASS                 = 'L';

    64     public static final String SIG_CLASS                  = "L";

    65     public static final char   SIGC_METHOD                = '(';

    66     public static final String SIG_METHOD                 = "(";

    67     public static final char   SIGC_ENDCLASS              = ';';

    68     public static final String SIG_ENDCLASS               = ";";

    69     public static final char   SIGC_ENDMETHOD             = ')';

    70     public static final String SIG_ENDMETHOD              = ")";

    71     public static final char   SIGC_PACKAGE               = '/';

    72     public static final String SIG_PACKAGE                = "/";

    74     /* Class File Constants */

    75     public static final int JAVA_MAGIC                   = 0xcafebabe;

    76     public static final int JAVA_VERSION                 = 45;

    77     public static final int JAVA_MINOR_VERSION           = 3;

    79     /* Constant table */

    80     public static final int CONSTANT_UTF8                = 1;

    81     public static final int CONSTANT_UNICODE             = 2;

    82     public static final int CONSTANT_INTEGER             = 3;

    83     public static final int CONSTANT_FLOAT               = 4;

    84     public static final int CONSTANT_LONG                = 5;

    85     public static final int CONSTANT_DOUBLE              = 6;

    86     public static final int CONSTANT_CLASS               = 7;

    87     public static final int CONSTANT_STRING              = 8;

    88     public static final int CONSTANT_FIELD               = 9;

    89     public static final int CONSTANT_METHOD              = 10;

    90     public static final int CONSTANT_INTERFACEMETHOD     = 11;

    91     public static final int CONSTANT_NAMEANDTYPE         = 12;

    93     /* Access Flags */

    94     public static final int ACC_PUBLIC                   = 0x00000001;

    95     public static final int ACC_PRIVATE                  = 0x00000002;

    96     public static final int ACC_PROTECTED                = 0x00000004;

    97     public static final int ACC_STATIC                   = 0x00000008;

    98     public static final int ACC_FINAL                    = 0x00000010;

    99     public static final int ACC_SYNCHRONIZED             = 0x00000020;

   100     public static final int ACC_SUPER                        = 0x00000020;

   101     public static final int ACC_VOLATILE                 = 0x00000040;

   102     public static final int ACC_TRANSIENT                = 0x00000080;

   103     public static final int ACC_NATIVE                   = 0x00000100;

   104     public static final int ACC_INTERFACE                = 0x00000200;

   105     public static final int ACC_ABSTRACT                 = 0x00000400;

   106     public static final int ACC_STRICT                   = 0x00000800;

   107     public static final int ACC_EXPLICIT                 = 0x00001000;

   108     public static final int ACC_SYNTHETIC                = 0x00010000; // actually, this is an attribute

   110     /* Type codes */

   111     public static final int T_CLASS                      = 0x00000002;

   112     public static final int T_BOOLEAN                    = 0x00000004;

   113     public static final int T_CHAR                       = 0x00000005;

   114     public static final int T_FLOAT                      = 0x00000006;

   115     public static final int T_DOUBLE                     = 0x00000007;

   116     public static final int T_BYTE                       = 0x00000008;

   117     public static final int T_SHORT                      = 0x00000009;

   118     public static final int T_INT                        = 0x0000000a;

   119     public static final int T_LONG                       = 0x0000000b;

   121     /* Type codes for StackMap attribute */

   122     public static final int ITEM_Bogus      =0; // an unknown or uninitialized value

   123     public static final int ITEM_Integer    =1; // a 32-bit integer

   124     public static final int ITEM_Float      =2; // not used

   125     public static final int ITEM_Double     =3; // not used

   126     public static final int ITEM_Long       =4; // a 64-bit integer

   127     public static final int ITEM_Null       =5; // the type of null

   128     public static final int ITEM_InitObject =6; // "this" in constructor

   129     public static final int ITEM_Object     =7; // followed by 2-byte index of class name

   130     public static final int ITEM_NewObject  =8; // followed by 2-byte ref to "new"

   132     /* Constants used in StackMapTable attribute */

   133     public static final int SAME_FRAME_BOUND                  = 64;

   134     public static final int SAME_LOCALS_1_STACK_ITEM_BOUND    = 128;

   135     public static final int SAME_LOCALS_1_STACK_ITEM_EXTENDED = 247;

   136     public static final int SAME_FRAME_EXTENDED               = 251;

   137     public static final int FULL_FRAME                        = 255;

   139     /* Opcodes */

   140     public static final int opc_dead                     = -2;

   141     public static final int opc_label                    = -1;

   142     public static final int opc_nop                      = 0;

   143     public static final int opc_aconst_null              = 1;

   144     public static final int opc_iconst_m1                = 2;

   145     public static final int opc_iconst_0                 = 3;

   146     public static final int opc_iconst_1                 = 4;

   147     public static final int opc_iconst_2                 = 5;

   148     public static final int opc_iconst_3                 = 6;

   149     public static final int opc_iconst_4                 = 7;

   150     public static final int opc_iconst_5                 = 8;

   151     public static final int opc_lconst_0                 = 9;

   152     public static final int opc_lconst_1                 = 10;

   153     public static final int opc_fconst_0                 = 11;

   154     public static final int opc_fconst_1                 = 12;

   155     public static final int opc_fconst_2                 = 13;

   156     public static final int opc_dconst_0                 = 14;

   157     public static final int opc_dconst_1                 = 15;

   158     public static final int opc_bipush                   = 16;

   159     public static final int opc_sipush                   = 17;

   160     public static final int opc_ldc                      = 18;

   161     public static final int opc_ldc_w                    = 19;

   162     public static final int opc_ldc2_w                   = 20;

   163     public static final int opc_iload                    = 21;

   164     public static final int opc_lload                    = 22;

   165     public static final int opc_fload                    = 23;

   166     public static final int opc_dload                    = 24;

   167     public static final int opc_aload                    = 25;

   168     public static final int opc_iload_0                  = 26;

   169     public static final int opc_iload_1                  = 27;

   170     public static final int opc_iload_2                  = 28;

   171     public static final int opc_iload_3                  = 29;

   172     public static final int opc_lload_0                  = 30;

   173     public static final int opc_lload_1                  = 31;

   174     public static final int opc_lload_2                  = 32;

   175     public static final int opc_lload_3                  = 33;

   176     public static final int opc_fload_0                  = 34;

   177     public static final int opc_fload_1                  = 35;

   178     public static final int opc_fload_2                  = 36;

   179     public static final int opc_fload_3                  = 37;

   180     public static final int opc_dload_0                  = 38;

   181     public static final int opc_dload_1                  = 39;

   182     public static final int opc_dload_2                  = 40;

   183     public static final int opc_dload_3                  = 41;

   184     public static final int opc_aload_0                  = 42;

   185     public static final int opc_aload_1                  = 43;

   186     public static final int opc_aload_2                  = 44;

   187     public static final int opc_aload_3                  = 45;

   188     public static final int opc_iaload                   = 46;

   189     public static final int opc_laload                   = 47;

   190     public static final int opc_faload                   = 48;

   191     public static final int opc_daload                   = 49;

   192     public static final int opc_aaload                   = 50;

   193     public static final int opc_baload                   = 51;

   194     public static final int opc_caload                   = 52;

   195     public static final int opc_saload                   = 53;

   196     public static final int opc_istore                   = 54;

   197     public static final int opc_lstore                   = 55;

   198     public static final int opc_fstore                   = 56;

   199     public static final int opc_dstore                   = 57;

   200     public static final int opc_astore                   = 58;

   201     public static final int opc_istore_0                 = 59;

   202     public static final int opc_istore_1                 = 60;

   203     public static final int opc_istore_2                 = 61;

   204     public static final int opc_istore_3                 = 62;

   205     public static final int opc_lstore_0                 = 63;

   206     public static final int opc_lstore_1                 = 64;

   207     public static final int opc_lstore_2                 = 65;

   208     public static final int opc_lstore_3                 = 66;

   209     public static final int opc_fstore_0                 = 67;

   210     public static final int opc_fstore_1                 = 68;

   211     public static final int opc_fstore_2                 = 69;

   212     public static final int opc_fstore_3                 = 70;

   213     public static final int opc_dstore_0                 = 71;

   214     public static final int opc_dstore_1                 = 72;

   215     public static final int opc_dstore_2                 = 73;

   216     public static final int opc_dstore_3                 = 74;

   217     public static final int opc_astore_0                 = 75;

   218     public static final int opc_astore_1                 = 76;

   219     public static final int opc_astore_2                 = 77;

   220     public static final int opc_astore_3                 = 78;

   221     public static final int opc_iastore                  = 79;

   222     public static final int opc_lastore                  = 80;

   223     public static final int opc_fastore                  = 81;

   224     public static final int opc_dastore                  = 82;

   225     public static final int opc_aastore                  = 83;

   226     public static final int opc_bastore                  = 84;

   227     public static final int opc_castore                  = 85;

   228     public static final int opc_sastore                  = 86;

   229     public static final int opc_pop                      = 87;

   230     public static final int opc_pop2                     = 88;

   231     public static final int opc_dup                      = 89;

   232     public static final int opc_dup_x1                   = 90;

   233     public static final int opc_dup_x2                   = 91;

   234     public static final int opc_dup2                     = 92;

   235     public static final int opc_dup2_x1                  = 93;

   236     public static final int opc_dup2_x2                  = 94;

   237     public static final int opc_swap                     = 95;

   238     public static final int opc_iadd                     = 96;

   239     public static final int opc_ladd                     = 97;

   240     public static final int opc_fadd                     = 98;

   241     public static final int opc_dadd                     = 99;

   242     public static final int opc_isub                     = 100;

   243     public static final int opc_lsub                     = 101;

   244     public static final int opc_fsub                     = 102;

   245     public static final int opc_dsub                     = 103;

   246     public static final int opc_imul                     = 104;

   247     public static final int opc_lmul                     = 105;

   248     public static final int opc_fmul                     = 106;

   249     public static final int opc_dmul                     = 107;

   250     public static final int opc_idiv                     = 108;

   251     public static final int opc_ldiv                     = 109;

   252     public static final int opc_fdiv                     = 110;

   253     public static final int opc_ddiv                     = 111;

   254     public static final int opc_irem                     = 112;

   255     public static final int opc_lrem                     = 113;

   256     public static final int opc_frem                     = 114;

   257     public static final int opc_drem                     = 115;

   258     public static final int opc_ineg                     = 116;

   259     public static final int opc_lneg                     = 117;

   260     public static final int opc_fneg                     = 118;

   261     public static final int opc_dneg                     = 119;

   262     public static final int opc_ishl                     = 120;

   263     public static final int opc_lshl                     = 121;

   264     public static final int opc_ishr                     = 122;

   265     public static final int opc_lshr                     = 123;

   266     public static final int opc_iushr                    = 124;

   267     public static final int opc_lushr                    = 125;

   268     public static final int opc_iand                     = 126;

   269     public static final int opc_land                     = 127;

   270     public static final int opc_ior                      = 128;

   271     public static final int opc_lor                      = 129;

   272     public static final int opc_ixor                     = 130;

   273     public static final int opc_lxor                     = 131;

   274     public static final int opc_iinc                     = 132;

   275     public static final int opc_i2l                      = 133;

   276     public static final int opc_i2f                      = 134;

   277     public static final int opc_i2d                      = 135;

   278     public static final int opc_l2i                      = 136;

   279     public static final int opc_l2f                      = 137;

   280     public static final int opc_l2d                      = 138;

   281     public static final int opc_f2i                      = 139;

   282     public static final int opc_f2l                      = 140;

   283     public static final int opc_f2d                      = 141;

   284     public static final int opc_d2i                      = 142;

   285     public static final int opc_d2l                      = 143;

   286     public static final int opc_d2f                      = 144;

   287     public static final int opc_i2b                      = 145;

   288     public static final int opc_int2byte                 = 145;

   289     public static final int opc_i2c                      = 146;

   290     public static final int opc_int2char                 = 146;

   291     public static final int opc_i2s                      = 147;

   292     public static final int opc_int2short                = 147;

   293     public static final int opc_lcmp                     = 148;

   294     public static final int opc_fcmpl                    = 149;

   295     public static final int opc_fcmpg                    = 150;

   296     public static final int opc_dcmpl                    = 151;

   297     public static final int opc_dcmpg                    = 152;

   298     public static final int opc_ifeq                     = 153;

   299     public static final int opc_ifne                     = 154;

   300     public static final int opc_iflt                     = 155;

   301     public static final int opc_ifge                     = 156;

   302     public static final int opc_ifgt                     = 157;

   303     public static final int opc_ifle                     = 158;

   304     public static final int opc_if_icmpeq                = 159;

   305     public static final int opc_if_icmpne                = 160;

   306     public static final int opc_if_icmplt                = 161;

   307     public static final int opc_if_icmpge                = 162;

   308     public static final int opc_if_icmpgt                = 163;

   309     public static final int opc_if_icmple                = 164;

   310     public static final int opc_if_acmpeq                = 165;

   311     public static final int opc_if_acmpne                = 166;

   312     public static final int opc_goto                     = 167;

   313     public static final int opc_jsr                      = 168;

   314     public static final int opc_ret                      = 169;

   315     public static final int opc_tableswitch              = 170;

   316     public static final int opc_lookupswitch             = 171;

   317     public static final int opc_ireturn                  = 172;

   318     public static final int opc_lreturn                  = 173;

   319     public static final int opc_freturn                  = 174;

   320     public static final int opc_dreturn                  = 175;

   321     public static final int opc_areturn                  = 176;

   322     public static final int opc_return                   = 177;

   323     public static final int opc_getstatic                = 178;

   324     public static final int opc_putstatic                = 179;

   325     public static final int opc_getfield                 = 180;

   326     public static final int opc_putfield                 = 181;

   327     public static final int opc_invokevirtual            = 182;

   328     public static final int opc_invokenonvirtual         = 183;

   329     public static final int opc_invokespecial            = 183;

   330     public static final int opc_invokestatic             = 184;

   331     public static final int opc_invokeinterface          = 185;

   332 //    public static final int opc_xxxunusedxxx             = 186;

   333     public static final int opc_new                      = 187;

   334     public static final int opc_newarray                 = 188;

   335     public static final int opc_anewarray                = 189;

   336     public static final int opc_arraylength              = 190;

   337     public static final int opc_athrow                   = 191;

   338     public static final int opc_checkcast                = 192;

   339     public static final int opc_instanceof               = 193;

   340     public static final int opc_monitorenter             = 194;

   341     public static final int opc_monitorexit              = 195;

   342     public static final int opc_wide                     = 196;

   343     public static final int opc_multianewarray           = 197;

   344     public static final int opc_ifnull                   = 198;

   345     public static final int opc_ifnonnull                = 199;

   346     public static final int opc_goto_w                   = 200;

   347     public static final int opc_jsr_w                    = 201;

   348         /* Pseudo-instructions */

   349     public static final int opc_bytecode                 = 203;

   350     public static final int opc_try                      = 204;

   351     public static final int opc_endtry                   = 205;

   352     public static final int opc_catch                    = 206;

   353     public static final int opc_var                      = 207;

   354     public static final int opc_endvar                   = 208;

   355     public static final int opc_localsmap                = 209;

   356     public static final int opc_stackmap                 = 210;

   357         /* PicoJava prefixes */

   358     public static final int opc_nonpriv                  = 254;

   359     public static final int opc_priv                     = 255;

   361         /* Wide instructions */

   362     public static final int opc_iload_w         = (opc_wide<<8)|opc_iload;

   363     public static final int opc_lload_w         = (opc_wide<<8)|opc_lload;

   364     public static final int opc_fload_w         = (opc_wide<<8)|opc_fload;

   365     public static final int opc_dload_w         = (opc_wide<<8)|opc_dload;

   366     public static final int opc_aload_w         = (opc_wide<<8)|opc_aload;

   367     public static final int opc_istore_w        = (opc_wide<<8)|opc_istore;

   368     public static final int opc_lstore_w        = (opc_wide<<8)|opc_lstore;

   369     public static final int opc_fstore_w        = (opc_wide<<8)|opc_fstore;

   370     public static final int opc_dstore_w        = (opc_wide<<8)|opc_dstore;

   371     public static final int opc_astore_w        = (opc_wide<<8)|opc_astore;

   372     public static final int opc_ret_w           = (opc_wide<<8)|opc_ret;

   373     public static final int opc_iinc_w          = (opc_wide<<8)|opc_iinc;

   375     /* Opcode Names */

   376   public static final String opcNamesTab[] = {

   377         "nop",

   378         "aconst_null",

   379         "iconst_m1",

   380         "iconst_0",

   381         "iconst_1",

   382         "iconst_2",

   383         "iconst_3",

   384         "iconst_4",

   385         "iconst_5",

   386         "lconst_0",

   387         "lconst_1",

   388         "fconst_0",

   389         "fconst_1",

   390         "fconst_2",

   391         "dconst_0",

   392         "dconst_1",

   393         "bipush",

   394         "sipush",

   395         "ldc",

   396         "ldc_w",

   397         "ldc2_w",

   398         "iload",

   399         "lload",

   400         "fload",

   401         "dload",

   402         "aload",

   403         "iload_0",

   404         "iload_1",

   405         "iload_2",

   406         "iload_3",

   407         "lload_0",

   408         "lload_1",

   409         "lload_2",

   410         "lload_3",

   411         "fload_0",

   412         "fload_1",

   413         "fload_2",

   414         "fload_3",

   415         "dload_0",

   416         "dload_1",

   417         "dload_2",

   418         "dload_3",

   419         "aload_0",

   420         "aload_1",

   421         "aload_2",

   422         "aload_3",

   423         "iaload",

   424         "laload",

   425         "faload",

   426         "daload",

   427         "aaload",

   428         "baload",

   429         "caload",

   430         "saload",

   431         "istore",

   432         "lstore",

   433         "fstore",

   434         "dstore",

   435         "astore",

   436         "istore_0",

   437         "istore_1",

   438         "istore_2",

   439         "istore_3",

   440         "lstore_0",

   441         "lstore_1",

   442         "lstore_2",

   443         "lstore_3",

   444         "fstore_0",

   445         "fstore_1",

   446         "fstore_2",

   447         "fstore_3",

   448         "dstore_0",

   449         "dstore_1",

   450         "dstore_2",

   451         "dstore_3",

   452         "astore_0",

   453         "astore_1",

   454         "astore_2",

   455         "astore_3",

   456         "iastore",

   457         "lastore",

   458         "fastore",

   459         "dastore",

   460         "aastore",

   461         "bastore",

   462         "castore",

   463         "sastore",

   464         "pop",

   465         "pop2",

   466         "dup",

   467         "dup_x1",

   468         "dup_x2",

   469         "dup2",

   470         "dup2_x1",

   471         "dup2_x2",

   472         "swap",

   473         "iadd",

   474         "ladd",

   475         "fadd",

   476         "dadd",

   477         "isub",

   478         "lsub",

   479         "fsub",

   480         "dsub",

   481         "imul",

   482         "lmul",

   483         "fmul",

   484         "dmul",

   485         "idiv",

   486         "ldiv",

   487         "fdiv",

   488         "ddiv",

   489         "irem",

   490         "lrem",

   491         "frem",

   492         "drem",

   493         "ineg",

   494         "lneg",

   495         "fneg",

   496         "dneg",

   497         "ishl",

   498         "lshl",

   499         "ishr",

   500         "lshr",

   501         "iushr",

   502         "lushr",

   503         "iand",

   504         "land",

   505         "ior",

   506         "lor",

   507         "ixor",

   508         "lxor",

   509         "iinc",

   510         "i2l",

   511         "i2f",

   512         "i2d",

   513         "l2i",

   514         "l2f",

   515         "l2d",

   516         "f2i",

   517         "f2l",

   518         "f2d",

   519         "d2i",

   520         "d2l",

   521         "d2f",

   522         "i2b",

   523         "i2c",

   524         "i2s",

   525         "lcmp",

   526         "fcmpl",

   527         "fcmpg",

   528         "dcmpl",

   529         "dcmpg",

   530         "ifeq",

   531         "ifne",

   532         "iflt",

   533         "ifge",

   534         "ifgt",

   535         "ifle",

   536         "if_icmpeq",

   537         "if_icmpne",

   538         "if_icmplt",

   539         "if_icmpge",

   540         "if_icmpgt",

   541         "if_icmple",

   542         "if_acmpeq",

   543         "if_acmpne",

   544         "goto",

   545         "jsr",

   546         "ret",

   547         "tableswitch",

   548         "lookupswitch",

   549         "ireturn",

   550         "lreturn",

   551         "freturn",

   552         "dreturn",

   553         "areturn",

   554         "return",

   555         "getstatic",

   556         "putstatic",

   557         "getfield",

   558         "putfield",

   559         "invokevirtual",

   560         "invokespecial", //     was "invokenonvirtual",

   561         "invokestatic",

   562         "invokeinterface",

   563         "bytecode 186", //"xxxunusedxxx",

   564         "new",

   565         "newarray",

   566         "anewarray",

   567         "arraylength",

   568         "athrow",

   569         "checkcast",

   570         "instanceof",

   571         "monitorenter",

   572         "monitorexit",

   573          null, // "wide",

   574         "multianewarray",

   575         "ifnull",

   576         "ifnonnull",

   577         "goto_w",

   578         "jsr_w",

   579         "bytecode 202", // "breakpoint",

   580         "bytecode",

   581         "try",

   582         "endtry",

   583         "catch",

   584         "var",

   585         "endvar",

   586         "locals_map",

   587         "stack_map"

   588   };

   590     /* Opcode Lengths */

   591   public static final int opcLengthsTab[] = {

   592         1,

   593         1,

   594         1,

   595         1,

   596         1,

   597         1,

   598         1,

   599         1,

   600         1,

   601         1,

   602         1,

   603         1,

   604         1,

   605         1,

   606         1,

   607         1,

   608         2,

   609         3,

   610         2,

   611         3,

   612         3,

   613         2,

   614         2,

   615         2,

   616         2,

   617         2,

   618         1,

   619         1,

   620         1,

   621         1,

   622         1,

   623         1,

   624         1,

   625         1,

   626         1,

   627         1,

   628         1,

   629         1,

   630         1,

   631         1,

   632         1,

   633         1,

   634         1,

   635         1,

   636         1,

   637         1,

   638         1,

   639         1,

   640         1,

   641         1,

   642         1,

   643         1,

   644         1,

   645         1,

   646         2,

   647         2,

   648         2,

   649         2,

   650         2,

   651         1,

   652         1,

   653         1,

   654         1,

   655         1,

   656         1,

   657         1,

   658         1,

   659         1,

   660         1,

   661         1,

   662         1,

   663         1,

   664         1,

   665         1,

   666         1,

   667         1,

   668         1,

   669         1,

   670         1,

   671         1,

   672         1,

   673         1,

   674         1,

   675         1,

   676         1,

   677         1,

   678         1,

   679         1,

   680         1,

   681         1,

   682         1,

   683         1,

   684         1,

   685         1,

   686         1,

   687         1,

   688         1,

   689         1,

   690         1,

   691         1,

   692         1,

   693         1,

   694         1,

   695         1,

   696         1,

   697         1,

   698         1,

   699         1,

   700         1,

   701         1,

   702         1,

   703         1,

   704         1,

   705         1,

   706         1,

   707         1,

   708         1,

   709         1,

   710         1,

   711         1,

   712         1,

   713         1,

   714         1,

   715         1,

   716         1,

   717         1,

   718         1,

   719         1,

   720         1,

   721         1,

   722         1,

   723         1,

   724         3,

   725         1,

   726         1,

   727         1,

   728         1,

   729         1,

   730         1,

   731         1,

   732         1,

   733         1,

   734         1,

   735         1,

   736         1,

   737         1,

   738         1,

   739         1,

   740         1,

   741         1,

   742         1,

   743         1,

   744         1,

   745         3,

   746         3,

   747         3,

   748         3,

   749         3,

   750         3,

   751         3,

   752         3,

   753         3,

   754         3,

   755         3,

   756         3,

   757         3,

   758         3,

   759         3,

   760         3,

   761         2,

   762         99,

   763         99,

   764         1,

   765         1,

   766         1,

   767         1,

   768         1,

   769         1,

   770         3,

   771         3,

   772         3,

   773         3,

   774         3,

   775         3,

   776         3,

   777         5,

   778         0,

   779         3,

   780         2,

   781         3,

   782         1,

   783         1,

   784         3,

   785         3,

   786         1,

   787         1,

   788         0, // wide

   789         4,

   790         3,

   791         3,

   792         5,

   793         5,

   794         1,

   795         1, 0, 0, 0, 0, 0 // pseudo

   796   };

   798      /**

   799      * End of input

   800      */

   801     public static final int EOF = -1;

   803    /*

   804      * Flags

   805      */

   806     public static final int F_VERBOSE           = 1 << 0;

   807     public static final int F_DUMP              = 1 << 1;

   808     public static final int F_WARNINGS          = 1 << 2;

   809     public static final int F_DEBUG             = 1 << 3;

   810     public static final int F_OPTIMIZE          = 1 << 4;

   811     public static final int F_DEPENDENCIES      = 1 << 5;

   813     /*

   814      * Type codes

   815      */

   816     public static final int TC_BOOLEAN   = 0;

   817     public static final int TC_BYTE      = 1;

   818     public static final int TC_CHAR      = 2;

   819     public static final int TC_SHORT     = 3;

   820     public static final int TC_INT       = 4;

   821     public static final int TC_LONG      = 5;

   822     public static final int TC_FLOAT     = 6;

   823     public static final int TC_DOUBLE    = 7;

   824     public static final int TC_NULL      = 8;

   825     public static final int TC_ARRAY     = 9;

   826     public static final int TC_CLASS     = 10;

   827     public static final int TC_VOID      = 11;

   828     public static final int TC_METHOD    = 12;

   829     public static final int TC_ERROR     = 13;

   831     /*

   832      * Type Masks

   833      */

   834     public static final int TM_NULL      = 1 << TC_NULL;

   835     public static final int TM_VOID      = 1 << TC_VOID;

   836     public static final int TM_BOOLEAN   = 1 << TC_BOOLEAN;

   837     public static final int TM_BYTE      = 1 << TC_BYTE;

   838     public static final int TM_CHAR      = 1 << TC_CHAR;

   839     public static final int TM_SHORT     = 1 << TC_SHORT;

   840     public static final int TM_INT       = 1 << TC_INT;

   841     public static final int TM_LONG      = 1 << TC_LONG;

   842     public static final int TM_FLOAT     = 1 << TC_FLOAT;

   843     public static final int TM_DOUBLE    = 1 << TC_DOUBLE;

   844     public static final int TM_ARRAY     = 1 << TC_ARRAY;

   845     public static final int TM_CLASS     = 1 << TC_CLASS;

   846     public static final int TM_METHOD    = 1 << TC_METHOD;

   847     public static final int TM_ERROR     = 1 << TC_ERROR;

   849     public static final int TM_INT32     = TM_BYTE | TM_SHORT | TM_CHAR | TM_INT;

   850     public static final int TM_NUM32     = TM_INT32 | TM_FLOAT;

   851     public static final int TM_NUM64     = TM_LONG | TM_DOUBLE;

   852     public static final int TM_INTEGER   = TM_INT32 | TM_LONG;

   853     public static final int TM_REAL      = TM_FLOAT | TM_DOUBLE;

   854     public static final int TM_NUMBER    = TM_INTEGER | TM_REAL;

   855     public static final int TM_REFERENCE = TM_ARRAY | TM_CLASS | TM_NULL;

   857     /*

   858      * Class status

   859      */

   860     public static final int CS_UNDEFINED        = 0;

   861     public static final int CS_UNDECIDED        = 1;

   862     public static final int CS_BINARY           = 2;

   863     public static final int CS_SOURCE           = 3;

   864     public static final int CS_PARSED           = 4;

   865     public static final int CS_COMPILED         = 5;

   866     public static final int CS_NOTFOUND         = 6;

   868     /*

   869      * Attributes

   870      */

   871     public static final int ATT_ALL             = -1;

   872     public static final int ATT_CODE            = 1;

   874     /*

   875      * Number of bits used in file offsets

   876      */

   877     public static final int OFFSETBITS          = 19;

   878     public static final int MAXFILESIZE         = (1 << OFFSETBITS) - 1;

   879     public static final int MAXLINENUMBER       = (1 << (32 - OFFSETBITS)) - 1;

   881     /*

   882      * Operators

   883      */

   884     public final int COMMA              = 0;

   885     public final int ASSIGN             = 1;

   887     public final int ASGMUL             = 2;

   888     public final int ASGDIV             = 3;

   889     public final int ASGREM             = 4;

   890     public final int ASGADD             = 5;

   891     public final int ASGSUB             = 6;

   892     public final int ASGLSHIFT          = 7;

   893     public final int ASGRSHIFT          = 8;

   894     public final int ASGURSHIFT         = 9;

   895     public final int ASGBITAND          = 10;

   896     public final int ASGBITOR           = 11;

   897     public final int ASGBITXOR          = 12;

   899     public final int COND               = 13;

   900     public final int OR                 = 14;

   901     public final int AND                = 15;

   902     public final int BITOR              = 16;

   903     public final int BITXOR             = 17;

   904     public final int BITAND             = 18;

   905     public final int NE                 = 19;

   906     public final int EQ                 = 20;

   907     public final int GE                 = 21;

   908     public final int GT                 = 22;

   909     public final int LE                 = 23;

   910     public final int LT                 = 24;

   911     public final int INSTANCEOF         = 25;

   912     public final int LSHIFT             = 26;

   913     public final int RSHIFT             = 27;

   914     public final int URSHIFT            = 28;

   915     public final int ADD                = 29;

   916     public final int SUB                = 30;

   917     public final int DIV                = 31;

   918     public final int REM                = 32;

   919     public final int MUL                = 33;

   920     public final int CAST               = 34;           // (x)y

   921     public final int POS                = 35;           // +x

   922     public final int NEG                = 36;           // -x

   923     public final int NOT                = 37;

   924     public final int BITNOT             = 38;

   925     public final int PREINC             = 39;           // ++x

   926     public final int PREDEC             = 40;           // --x

   927     public final int NEWARRAY           = 41;

   928     public final int NEWINSTANCE        = 42;

   929     public final int NEWFROMNAME        = 43;

   930     public final int POSTINC            = 44;           // x++

   931     public final int POSTDEC            = 45;           // x--

   932     public final int FIELD              = 46;

   933     public final int METHOD             = 47;           // x(y)

   934     public final int ARRAYACCESS        = 48;           // x[y]

   935     public final int NEW                = 49;

   936     public final int INC                = 50;

   937     public final int DEC                = 51;

   939     public final int CONVERT            = 55;           // implicit conversion

   940     public final int EXPR               = 56;           // (x)

   941     public final int ARRAY              = 57;           // {x, y, ...}

   942     public final int GOTO               = 58;

   944     /*

   945      * Value tokens

   946      */

   947     public final int IDENT              = 60;

   948     public final int BOOLEANVAL         = 61;

   949     public final int BYTEVAL            = 62;

   950     public final int CHARVAL            = 63;

   951     public final int SHORTVAL           = 64;

   952     public final int INTVAL                     = 65;

   953     public final int LONGVAL            = 66;

   954     public final int FLOATVAL           = 67;

   955     public final int DOUBLEVAL          = 68;

   956     public final int STRINGVAL          = 69;

   958     /*

   959      * Type keywords

   960      */

   961     public final int BYTE               = 70;

   962     public final int CHAR               = 71;

   963     public final int SHORT              = 72;

   964     public final int INT                = 73;

   965     public final int LONG               = 74;

   966     public final int FLOAT              = 75;

   967     public final int DOUBLE             = 76;

   968     public final int VOID               = 77;

   969     public final int BOOLEAN            = 78;

   971     /*

   972      * Expression keywords

   973      */

   974     public final int TRUE               = 80;

   975     public final int FALSE              = 81;

   976     public final int THIS               = 82;

   977     public final int SUPER              = 83;

   978     public final int NULL               = 84;

   980     /*

   981      * Statement keywords

   982      */

   983     public final int IF                 = 90;

   984     public final int ELSE               = 91;

   985     public final int FOR                = 92;

   986     public final int WHILE              = 93;

   987     public final int DO                 = 94;

   988     public final int SWITCH             = 95;

   989     public final int CASE               = 96;

   990     public final int DEFAULT            = 97;

   991     public final int BREAK              = 98;

   992     public final int CONTINUE           = 99;

   993     public final int RETURN             = 100;

   994     public final int TRY                = 101;

   995     public final int CATCH              = 102;

   996     public final int FINALLY            = 103;

   997     public final int THROW              = 104;

   998     public final int STAT               = 105;

   999     public final int EXPRESSION         = 106;

  1000     public final int DECLARATION        = 107;

  1001     public final int VARDECLARATION     = 108;

  1003     /*

  1004      * Declaration keywords

  1005      */

  1006     public final int IMPORT             = 110;

  1007     public final int CLASS              = 111;

  1008     public final int EXTENDS            = 112;

  1009     public final int IMPLEMENTS         = 113;

  1010     public final int INTERFACE          = 114;

  1011     public final int PACKAGE            = 115;

  1013     /*

  1014      * Modifier keywords

  1015      */

  1016     public final int PRIVATE    = 120;

  1017     public final int PUBLIC             = 121;

  1018     public final int PROTECTED  = 122;

  1019     public final int CONST              = 123;

  1020     public final int STATIC             = 124;

  1021     public final int TRANSIENT          = 125;

  1022     public final int SYNCHRONIZED       = 126;

  1023     public final int NATIVE             = 127;

  1024     public final int FINAL              = 128;

  1025     public final int VOLATILE   = 129;

  1026     public final int ABSTRACT   = 130;

  1027     public final int STRICT             = 165;

  1029     /*

  1030      * Punctuation

  1031      */

  1032     public final int SEMICOLON  = 135;

  1033     public final int COLON              = 136;

  1034     public final int QUESTIONMARK       = 137;

  1035     public final int LBRACE             = 138;

  1036     public final int RBRACE             = 139;

  1037     public final int LPAREN             = 140;

  1038     public final int RPAREN             = 141;

  1039     public final int LSQBRACKET = 142;

  1040     public final int RSQBRACKET = 143;

  1041     public final int THROWS     = 144;

  1043     /*

  1044      * Special tokens

  1045      */

  1046     public final int ERROR              = 145;          // an error

  1047     public final int COMMENT    = 146;          // not used anymore.

  1048     public final int TYPE               = 147;

  1049     public final int LENGTH             = 148;

  1050     public final int INLINERETURN       = 149;

  1051     public final int INLINEMETHOD       = 150;

  1052     public final int INLINENEWINSTANCE  = 151;

  1054     /*

  1055      * Added for jasm

  1056      */

  1057         public final int METHODREF      = 152;

  1058         public final int FIELDREF       = 153;

  1059     public final int STACK              = 154;

  1060     public final int LOCAL              = 155;

  1061     public final int CPINDEX    = 156;

  1062     public final int CPNAME             = 157;

  1063     public final int SIGN               = 158;

  1064     public final int BITS               = 159;

  1065     public final int INF                = 160;

  1066     public final int NAN                = 161;

  1067     public final int INNERCLASS = 162;

  1068     public final int OF         = 163;

  1069     public final int SYNTHETIC          = 164;

  1070 // last used=165;

  1072    /*

  1073      * Operator precedence

  1074      */

  1075     public static final int opPrecedence[] = {

  1076         10,     11,     11,     11,     11,     11,     11,     11,     11,     11,

  1077         11,     11,     11,     12,     13,     14,     15,     16,     17,     18,

  1078         18,     19,     19,     19,     19,     19,     20,     20,     20,     21,

  1079         21,     22,     22,     22,     23,     24,     24,     24,     24,     24,

  1080         24,     25,     25,     26,     26,     26,     26,     26,     26

  1081     };

  1083     /*

  1084      * Operator names

  1085      */

  1086     public static final String opNames[] = {

  1087         ",",            "=",            "*=",           "/=",           "%=",

  1088         "+=",           "-=",           "<<=",          ">>=",          "<<<=",

  1089         "&=",           "|=",           "^=",           "?:",           "||",

  1090         "&&",           "|",            "^",            "&",            "!=",

  1091         "==",           ">=",           ">",            "<=",           "<",

  1092         "instanceof",   "<<",           ">>",           "<<<",          "+",

  1093         "-",            "/",            "%",            "*",            "cast",

  1094         "+",            "-",            "!",            "~",            "++",

  1095         "--",           "new",          "new",          "new",          "++",

  1096         "--",           "field",        "method",       "[]",           "new",

  1097         "++",           "--",           null,           null,           null,

  1099         "convert",      "expr",         "array",        "goto",         null,

  1101         "Identifier",   "Boolean",      "Byte",         "Char",         "Short",

  1102         "Integer",              "Long",         "Float",        "Double",       "String",

  1104         "byte",         "char",         "short",        "int",          "long",

  1105         "float",        "double",       "void",         "boolean",      null,

  1107         "true",         "false",        "this",         "super",        "null",

  1108         null,           null,           null,           null,           null,

  1110         "if",           "else",         "for",          "while",        "do",

  1111         "switch",       "case",         "default",      "break",        "continue",

  1112         "return",       "try",          "catch",        "finally",      "throw",

  1113         "stat",         "expression",   "declaration",  "declaration",  null,

  1115         "import",       "class",        "extends",      "implements",   "interface",

  1116         "package",      null,           null,           null,           null,

  1118         "private",      "public",       "protected",    "const",        "static",

  1119         "transient",    "synchronized", "native",       "final",        "volatile",

  1120         "abstract",     null,           null,           null,           null,

  1122         ";",            ":",            "?",            "{",            "}",

  1123         "(",            ")",            "[",            "]",            "throws",

  1124         "error",        "comment",      "type",         "length",       "inline-return",

  1125         "inline-method", "inline-new",

  1126         "method", "field", "stack", "locals", "CPINDEX", "CPName", "SIGN",

  1127         "bits", "INF", "NaN", "InnerClass", "of", "synthetic"

  1128     };

  1130     static class AnnotationParser {

  1132         private final boolean textual;

  1133         private final boolean iterateArray;

  1135         protected AnnotationParser(boolean textual, boolean iterateArray) {

  1136             this.textual = textual;

  1137             this.iterateArray = iterateArray;

  1138         }

  1140         protected void visitAnnotationStart(String type, boolean top) throws IOException {

  1141         }

  1143         protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  1144         }

  1146         protected void visitValueStart(String attrName, char type) throws IOException {

  1147         }

  1149         protected void visitValueEnd(String attrName, char type) throws IOException {

  1150         }

  1152         protected void visitAttr(

  1153             String annoType, String attr, String attrType, String value) throws IOException {

  1154         }

  1156         protected void visitEnumAttr(

  1157             String annoType, String attr, String attrType, String value) throws IOException {

  1158             visitAttr(annoType, attr, attrType, value);

  1159         }

  1161         /**

  1162          * Initialize the parsing with constant pool from

  1163          * <code>cd</code>.

  1164          *

  1165          * @param attr the attribute defining annotations

  1166          * @param cd constant pool

  1167          * @throws IOException in case I/O fails

  1168          */

  1169         public final void parse(byte[] attr, ClassData cd) throws IOException {

  1170             ByteArrayInputStream is = new ByteArrayInputStream(attr);

  1171             DataInputStream dis = new DataInputStream(is);

  1172             try {

  1173                 read(dis, cd);

  1174             } finally {

  1175                 is.close();

  1176             }

  1177         }

  1179         private void read(DataInputStream dis, ClassData cd) throws IOException {

  1180             int cnt = dis.readUnsignedShort();

  1181             for (int i = 0; i < cnt; i++) {

  1182                 readAnno(dis, cd, true);

  1183             }

  1184         }

  1186         private void readAnno(DataInputStream dis, ClassData cd, boolean top) throws IOException {

  1187             int type = dis.readUnsignedShort();

  1188             String typeName = cd.StringValue(type);

  1189             visitAnnotationStart(typeName, top);

  1190             int cnt = dis.readUnsignedShort();

  1191             for (int i = 0; i < cnt; i++) {

  1192                 String attrName = cd.StringValue(dis.readUnsignedShort());

  1193                 readValue(dis, cd, typeName, attrName);

  1194             }

  1195             visitAnnotationEnd(typeName, top);

  1196             if (cnt == 0) {

  1197                 visitAttr(typeName, null, null, null);

  1198             }

  1199         }

  1201         private void readValue(

  1202             DataInputStream dis, ClassData cd, String typeName, String attrName) throws IOException {

  1203             char type = (char) dis.readByte();

  1204             visitValueStart(attrName, type);

  1205             if (type == '@') {

  1206                 readAnno(dis, cd, false);

  1207             } else if ("CFJZsSIDB".indexOf(type) >= 0) { // NOI18N

  1208                 int primitive = dis.readUnsignedShort();

  1209                 String val = cd.stringValue(primitive, textual);

  1210                 String attrType;

  1211                 if (type == 's') {

  1212                     attrType = "Ljava_lang_String_2";

  1213                     if (textual) {

  1214                         val = '"' + val + '"';

  1215                     }

  1216                 } else {

  1217                     attrType = "" + type;

  1218                 }

  1219                 visitAttr(typeName, attrName, attrType, val);

  1220             } else if (type == 'c') {

  1221                 int cls = dis.readUnsignedShort();

  1222             } else if (type == '[') {

  1223                 int cnt = dis.readUnsignedShort();

  1224                 for (int i = 0; i < cnt; i++) {

  1225                     readValue(dis, cd, typeName, iterateArray ? attrName : null);

  1226                 }

  1227             } else if (type == 'e') {

  1228                 int enumT = dis.readUnsignedShort();

  1229                 String attrType = cd.stringValue(enumT, textual);

  1230                 int enumN = dis.readUnsignedShort();

  1231                 String val = cd.stringValue(enumN, textual);

  1232                 visitEnumAttr(typeName, attrName, attrType, val);

  1233             } else {

  1234                 throw new IOException("Unknown type " + type);

  1235             }

  1236             visitValueEnd(attrName, type);

  1237         }

  1238     }

  1240     /**

  1241      * Reads and stores attribute information.

  1242      *

  1243      * @author Sucheta Dambalkar (Adopted code from jdis)

  1244      */

  1245     private static class AttrData {

  1247         ClassData cls;

  1248         int name_cpx;

  1249         int datalen;

  1250         byte data[];

  1252         public AttrData(ClassData cls) {

  1253             this.cls = cls;

  1254         }

  1256         /**

  1257          * Reads unknown attribute.

  1258          */

  1259         public void read(int name_cpx, DataInputStream in) throws IOException {

  1260             this.name_cpx = name_cpx;

  1261             datalen = in.readInt();

  1262             data = new byte[datalen];

  1263             in.readFully(data);

  1264         }

  1266         /**

  1267          * Reads just the name of known attribute.

  1268          */

  1269         public void read(int name_cpx) {

  1270             this.name_cpx = name_cpx;

  1271         }

  1273         /**

  1274          * Returns attribute name.

  1275          */

  1276         public String getAttrName() {

  1277             return cls.getString(name_cpx);

  1278         }

  1280         /**

  1281          * Returns attribute data.

  1282          */

  1283         public byte[] getData() {

  1284             return data;

  1285         }

  1286     }

  1288     /**

  1289      * Stores constant pool entry information with one field.

  1290      *

  1291      * @author Sucheta Dambalkar (Adopted code from jdis)

  1292      */

  1293     private static class CPX {

  1295         int cpx;

  1297         CPX(int cpx) {

  1298             this.cpx = cpx;

  1299         }

  1300     }

  1302     /**

  1303      * Stores constant pool entry information with two fields.

  1304      *

  1305      * @author Sucheta Dambalkar (Adopted code from jdis)

  1306      */

  1307     private static class CPX2 {

  1309         int cpx1, cpx2;

  1311         CPX2(int cpx1, int cpx2) {

  1312             this.cpx1 = cpx1;

  1313             this.cpx2 = cpx2;

  1314         }

  1315     }

  1317     /**

  1318      * Central data repository of the Java Disassembler. Stores all the

  1319      * information in java class file.

  1320      *

  1321      * @author Sucheta Dambalkar (Adopted code from jdis)

  1322      */

  1323     static final class ClassData {

  1325         private int magic;

  1326         private int minor_version;

  1327         private int major_version;

  1328         private int cpool_count;

  1329         private Object cpool[];

  1330         private int access;

  1331         private int this_class = 0;

  1332         private int super_class;

  1333         private int interfaces_count;

  1334         private int[] interfaces = new int[0];

  1335         private int fields_count;

  1336         private FieldData[] fields;

  1337         private int methods_count;

  1338         private MethodData[] methods;

  1339         private InnerClassData[] innerClasses;

  1340         private int attributes_count;

  1341         private AttrData[] attrs;

  1342         private String classname;

  1343         private String superclassname;

  1344         private int source_cpx = 0;

  1345         private byte tags[];

  1346         private Hashtable indexHashAscii = new Hashtable();

  1347         private String pkgPrefix = "";

  1348         private int pkgPrefixLen = 0;

  1350         /**

  1351          * Read classfile to disassemble.

  1352          */

  1353         public ClassData(InputStream infile) throws IOException {

  1354             this.read(new DataInputStream(infile));

  1355         }

  1357         /**

  1358          * Reads and stores class file information.

  1359          */

  1360         public void read(DataInputStream in) throws IOException {

  1361             // Read the header

  1362             magic = in.readInt();

  1363             if (magic != JAVA_MAGIC) {

  1364                 throw new ClassFormatError("wrong magic: "

  1365                     + toHex(magic) + ", expected "

  1366                     + toHex(JAVA_MAGIC));

  1367             }

  1368             minor_version = in.readShort();

  1369             major_version = in.readShort();

  1370             if (major_version != JAVA_VERSION) {

  1371             }

  1373             // Read the constant pool

  1374             readCP(in);

  1375             access = in.readUnsignedShort();

  1376             this_class = in.readUnsignedShort();

  1377             super_class = in.readUnsignedShort();

  1379             //Read interfaces.

  1380             interfaces_count = in.readUnsignedShort();

  1381             if (interfaces_count > 0) {

  1382                 interfaces = new int[interfaces_count];

  1383             }

  1384             for (int i = 0; i < interfaces_count; i++) {

  1385                 interfaces[i] = in.readShort();

  1386             }

  1388             // Read the fields

  1389             readFields(in);

  1391             // Read the methods

  1392             readMethods(in);

  1394             // Read the attributes

  1395             attributes_count = in.readUnsignedShort();

  1396             attrs = new AttrData[attributes_count];

  1397             for (int k = 0; k < attributes_count; k++) {

  1398                 int name_cpx = in.readUnsignedShort();

  1399                 if (getTag(name_cpx) == CONSTANT_UTF8

  1400                     && getString(name_cpx).equals("SourceFile")) {

  1401                     if (in.readInt() != 2) {

  1402                         throw new ClassFormatError("invalid attr length");

  1403                     }

  1404                     source_cpx = in.readUnsignedShort();

  1405                     AttrData attr = new AttrData(this);

  1406                     attr.read(name_cpx);

  1407                     attrs[k] = attr;

  1409                 } else if (getTag(name_cpx) == CONSTANT_UTF8

  1410                     && getString(name_cpx).equals("InnerClasses")) {

  1411                     int length = in.readInt();

  1412                     int num = in.readUnsignedShort();

  1413                     if (2 + num * 8 != length) {

  1414                         throw new ClassFormatError("invalid attr length");

  1415                     }

  1416                     innerClasses = new InnerClassData[num];

  1417                     for (int j = 0; j < num; j++) {

  1418                         InnerClassData innerClass = new InnerClassData(this);

  1419                         innerClass.read(in);

  1420                         innerClasses[j] = innerClass;

  1421                     }

  1422                     AttrData attr = new AttrData(this);

  1423                     attr.read(name_cpx);

  1424                     attrs[k] = attr;

  1425                 } else {

  1426                     AttrData attr = new AttrData(this);

  1427                     attr.read(name_cpx, in);

  1428                     attrs[k] = attr;

  1429                 }

  1430             }

  1431             in.close();

  1432         } // end ClassData.read()

  1434         /**

  1435          * Reads and stores constant pool info.

  1436          */

  1437         void readCP(DataInputStream in) throws IOException {

  1438             cpool_count = in.readUnsignedShort();

  1439             tags = new byte[cpool_count];

  1440             cpool = new Object[cpool_count];

  1441             for (int i = 1; i < cpool_count; i++) {

  1442                 byte tag = in.readByte();

  1444                 switch (tags[i] = tag) {

  1445                     case CONSTANT_UTF8:

  1446                         String str = in.readUTF();

  1447                         indexHashAscii.put(cpool[i] = str, new Integer(i));

  1448                         break;

  1449                     case CONSTANT_INTEGER:

  1450                         cpool[i] = new Integer(in.readInt());

  1451                         break;

  1452                     case CONSTANT_FLOAT:

  1453                         cpool[i] = new Float(in.readFloat());

  1454                         break;

  1455                     case CONSTANT_LONG:

  1456                         cpool[i++] = new Long(in.readLong());

  1457                         break;

  1458                     case CONSTANT_DOUBLE:

  1459                         cpool[i++] = new Double(in.readDouble());

  1460                         break;

  1461                     case CONSTANT_CLASS:

  1462                     case CONSTANT_STRING:

  1463                         cpool[i] = new CPX(in.readUnsignedShort());

  1464                         break;

  1466                     case CONSTANT_FIELD:

  1467                     case CONSTANT_METHOD:

  1468                     case CONSTANT_INTERFACEMETHOD:

  1469                     case CONSTANT_NAMEANDTYPE:

  1470                         cpool[i] = new CPX2(in.readUnsignedShort(), in.readUnsignedShort());

  1471                         break;

  1473                     case 0:

  1474                     default:

  1475                         throw new ClassFormatError("invalid constant type: " + (int) tags[i]);

  1476                 }

  1477             }

  1478         }

  1480         /**

  1481          * Reads and strores field info.

  1482          */

  1483         protected void readFields(DataInputStream in) throws IOException {

  1484             int fields_count = in.readUnsignedShort();

  1485             fields = new FieldData[fields_count];

  1486             for (int k = 0; k < fields_count; k++) {

  1487                 FieldData field = new FieldData(this);

  1488                 field.read(in);

  1489                 fields[k] = field;

  1490             }

  1491         }

  1493         /**

  1494          * Reads and strores Method info.

  1495          */

  1496         protected void readMethods(DataInputStream in) throws IOException {

  1497             int methods_count = in.readUnsignedShort();

  1498             methods = new MethodData[methods_count];

  1499             for (int k = 0; k < methods_count; k++) {

  1500                 MethodData method = new MethodData(this);

  1501                 method.read(in);

  1502                 methods[k] = method;

  1503             }

  1504         }

  1506         /**

  1507          * get a string

  1508          */

  1509         public String getString(int n) {

  1510             if (n == 0) {

  1511                 return null;

  1512             } else {

  1513                 return (String) cpool[n];

  1514             }

  1515         }

  1517         /**

  1518          * get the type of constant given an index

  1519          */

  1520         public byte getTag(int n) {

  1521             try {

  1522                 return tags[n];

  1523             } catch (ArrayIndexOutOfBoundsException e) {

  1524                 return (byte) 100;

  1525             }

  1526         }

  1527         static final String hexString = "0123456789ABCDEF";

  1528         public static char hexTable[] = hexString.toCharArray();

  1530         static String toHex(long val, int width) {

  1531             StringBuffer s = new StringBuffer();

  1532             for (int i = width - 1; i >= 0; i--) {

  1533                 s.append(hexTable[((int) (val >> (4 * i))) & 0xF]);

  1534             }

  1535             return "0x" + s.toString();

  1536         }

  1538         static String toHex(long val) {

  1539             int width;

  1540             for (width = 16; width > 0; width--) {

  1541                 if ((val >> (width - 1) * 4) != 0) {

  1542                     break;

  1543                 }

  1544             }

  1545             return toHex(val, width);

  1546         }

  1548         static String toHex(int val) {

  1549             int width;

  1550             for (width = 8; width > 0; width--) {

  1551                 if ((val >> (width - 1) * 4) != 0) {

  1552                     break;

  1553                 }

  1554             }

  1555             return toHex(val, width);

  1556         }

  1558         /**

  1559          * Returns the name of this class.

  1560          */

  1561         public String getClassName() {

  1562             String res = null;

  1563             if (this_class == 0) {

  1564                 return res;

  1565             }

  1566             int tcpx;

  1567             try {

  1568                 if (tags[this_class] != CONSTANT_CLASS) {

  1569                     return res; //"<CP["+cpx+"] is not a Class> ";

  1570                 }

  1571                 tcpx = ((CPX) cpool[this_class]).cpx;

  1572             } catch (ArrayIndexOutOfBoundsException e) {

  1573                 return res; // "#"+cpx+"// invalid constant pool index";

  1574             } catch (Throwable e) {

  1575                 return res; // "#"+cpx+"// ERROR IN DISASSEMBLER";

  1576             }

  1578             try {

  1579                 return (String) (cpool[tcpx]);

  1580             } catch (ArrayIndexOutOfBoundsException e) {

  1581                 return res; // "class #"+scpx+"// invalid constant pool index";

  1582             } catch (ClassCastException e) {

  1583                 return res; // "class #"+scpx+"// invalid constant pool reference";

  1584             } catch (Throwable e) {

  1585                 return res; // "#"+cpx+"// ERROR IN DISASSEMBLER";

  1586             }

  1588         }

  1590         /**

  1591          * Returns the name of class at perticular index.

  1592          */

  1593         public String getClassName(int cpx) {

  1594             String res = "#" + cpx;

  1595             if (cpx == 0) {

  1596                 return res;

  1597             }

  1598             int scpx;

  1599             try {

  1600                 if (tags[cpx] != CONSTANT_CLASS) {

  1601                     return res; //"<CP["+cpx+"] is not a Class> ";

  1602                 }

  1603                 scpx = ((CPX) cpool[cpx]).cpx;

  1604             } catch (ArrayIndexOutOfBoundsException e) {

  1605                 return res; // "#"+cpx+"// invalid constant pool index";

  1606             } catch (Throwable e) {

  1607                 return res; // "#"+cpx+"// ERROR IN DISASSEMBLER";

  1608             }

  1609             res = "#" + scpx;

  1610             try {

  1611                 return (String) (cpool[scpx]);

  1612             } catch (ArrayIndexOutOfBoundsException e) {

  1613                 return res; // "class #"+scpx+"// invalid constant pool index";

  1614             } catch (ClassCastException e) {

  1615                 return res; // "class #"+scpx+"// invalid constant pool reference";

  1616             } catch (Throwable e) {

  1617                 return res; // "#"+cpx+"// ERROR IN DISASSEMBLER";

  1618             }

  1619         }

  1621         public int getAccessFlags() {

  1622             return access;

  1623         }

  1625         /**

  1626          * Returns true if it is a class

  1627          */

  1628         public boolean isClass() {

  1629             if ((access & ACC_INTERFACE) == 0) {

  1630                 return true;

  1631             }

  1632             return false;

  1633         }

  1635         /**

  1636          * Returns true if it is a interface.

  1637          */

  1638         public boolean isInterface() {

  1639             if ((access & ACC_INTERFACE) != 0) {

  1640                 return true;

  1641             }

  1642             return false;

  1643         }

  1645         /**

  1646          * Returns true if this member is public, false otherwise.

  1647          */

  1648         public boolean isPublic() {

  1649             return (access & ACC_PUBLIC) != 0;

  1650         }

  1652         /**

  1653          * Returns the access of this class or interface.

  1654          */

  1655         public String[] getAccess() {

  1656             Vector v = new Vector();

  1657             if ((access & ACC_PUBLIC) != 0) {

  1658                 v.addElement("public");

  1659             }

  1660             if ((access & ACC_FINAL) != 0) {

  1661                 v.addElement("final");

  1662             }

  1663             if ((access & ACC_ABSTRACT) != 0) {

  1664                 v.addElement("abstract");

  1665             }

  1666             String[] accflags = new String[v.size()];

  1667             v.copyInto(accflags);

  1668             return accflags;

  1669         }

  1671         /**

  1672          * Returns list of innerclasses.

  1673          */

  1674         public InnerClassData[] getInnerClasses() {

  1675             return innerClasses;

  1676         }

  1678         /**

  1679          * Returns list of attributes.

  1680          */

  1681         final AttrData[] getAttributes() {

  1682             return attrs;

  1683         }

  1685         public byte[] findAnnotationData(boolean classRetention) {

  1686             String n = classRetention

  1687                 ? "RuntimeInvisibleAnnotations" : // NOI18N

  1688                 "RuntimeVisibleAnnotations"; // NOI18N

  1689             return findAttr(n, attrs);

  1690         }

  1692         /**

  1693          * Returns true if superbit is set.

  1694          */

  1695         public boolean isSuperSet() {

  1696             if ((access & ACC_SUPER) != 0) {

  1697                 return true;

  1698             }

  1699             return false;

  1700         }

  1702         /**

  1703          * Returns super class name.

  1704          */

  1705         public String getSuperClassName() {

  1706             String res = null;

  1707             if (super_class == 0) {

  1708                 return res;

  1709             }

  1710             int scpx;

  1711             try {

  1712                 if (tags[super_class] != CONSTANT_CLASS) {

  1713                     return res; //"<CP["+cpx+"] is not a Class> ";

  1714                 }

  1715                 scpx = ((CPX) cpool[super_class]).cpx;

  1716             } catch (ArrayIndexOutOfBoundsException e) {

  1717                 return res; // "#"+cpx+"// invalid constant pool index";

  1718             } catch (Throwable e) {

  1719                 return res; // "#"+cpx+"// ERROR IN DISASSEMBLER";

  1720             }

  1722             try {

  1723                 return (String) (cpool[scpx]);

  1724             } catch (ArrayIndexOutOfBoundsException e) {

  1725                 return res; // "class #"+scpx+"// invalid constant pool index";

  1726             } catch (ClassCastException e) {

  1727                 return res; // "class #"+scpx+"// invalid constant pool reference";

  1728             } catch (Throwable e) {

  1729                 return res; // "#"+cpx+"// ERROR IN DISASSEMBLER";

  1730             }

  1731         }

  1733         /**

  1734          * Returns list of super interfaces.

  1735          */

  1736         public String[] getSuperInterfaces() {

  1737             String interfacenames[] = new String[interfaces.length];

  1738             int interfacecpx = -1;

  1739             for (int i = 0; i < interfaces.length; i++) {

  1740                 interfacecpx = ((CPX) cpool[interfaces[i]]).cpx;

  1741                 interfacenames[i] = (String) (cpool[interfacecpx]);

  1742             }

  1743             return interfacenames;

  1744         }

  1746         /**

  1747          * Returns string at prticular constant pool index.

  1748          */

  1749         public String getStringValue(int cpoolx) {

  1750             try {

  1751                 return ((String) cpool[cpoolx]);

  1752             } catch (ArrayIndexOutOfBoundsException e) {

  1753                 return "//invalid constant pool index:" + cpoolx;

  1754             } catch (ClassCastException e) {

  1755                 return "//invalid constant pool ref:" + cpoolx;

  1756             }

  1757         }

  1759         /**

  1760          * Returns list of field info.

  1761          */

  1762         public FieldData[] getFields() {

  1763             return fields;

  1764         }

  1766         /**

  1767          * Returns list of method info.

  1768          */

  1769         public MethodData[] getMethods() {

  1770             return methods;

  1771         }

  1773         /**

  1774          * Returns constant pool entry at that index.

  1775          */

  1776         public CPX2 getCpoolEntry(int cpx) {

  1777             return ((CPX2) (cpool[cpx]));

  1778         }

  1780         public Object getCpoolEntryobj(int cpx) {

  1781             return (cpool[cpx]);

  1782         }

  1784         /**

  1785          * Returns index of this class.

  1786          */

  1787         public int getthis_cpx() {

  1788             return this_class;

  1789         }

  1791         /**

  1792          * Returns string at that index.

  1793          */

  1794         public String StringValue(int cpx) {

  1795             return stringValue(cpx, false);

  1796         }

  1798         public String stringValue(int cpx, boolean textual) {

  1799             return stringValue(cpx, textual, null);

  1800         }

  1802         public String stringValue(int cpx, String[] classRefs) {

  1803             return stringValue(cpx, true, classRefs);

  1804         }

  1806         private String stringValue(int cpx, boolean textual, String[] refs) {

  1807             if (cpx == 0) {

  1808                 return "#0";

  1809             }

  1810             int tag;

  1811             Object x;

  1812             String suffix = "";

  1813             try {

  1814                 tag = tags[cpx];

  1815                 x = cpool[cpx];

  1816             } catch (IndexOutOfBoundsException e) {

  1817                 return "<Incorrect CP index:" + cpx + ">";

  1818             }

  1820             if (x == null) {

  1821                 return "<NULL>";

  1822             }

  1823             switch (tag) {

  1824                 case CONSTANT_UTF8: {

  1825                     if (!textual) {

  1826                         return (String) x;

  1827                     }

  1828                     StringBuilder sb = new StringBuilder();

  1829                     String s = (String) x;

  1830                     for (int k = 0; k < s.length(); k++) {

  1831                         char c = s.charAt(k);

  1832                         switch (c) {

  1833                             case '\\':

  1834                                 sb.append('\\').append('\\');

  1835                                 break;

  1836                             case '\t':

  1837                                 sb.append('\\').append('t');

  1838                                 break;

  1839                             case '\n':

  1840                                 sb.append('\\').append('n');

  1841                                 break;

  1842                             case '\r':

  1843                                 sb.append('\\').append('r');

  1844                                 break;

  1845                             case '\"':

  1846                                 sb.append('\\').append('\"');

  1847                                 break;

  1848                             default:

  1849                                 sb.append(c);

  1850                         }

  1851                     }

  1852                     return sb.toString();

  1853                 }

  1854                 case CONSTANT_DOUBLE: {

  1855                     Double d = (Double) x;

  1856                     String sd = d.toString();

  1857                     if (textual) {

  1858                         return sd;

  1859                     }

  1860                     return sd + "d";

  1861                 }

  1862                 case CONSTANT_FLOAT: {

  1863                     Float f = (Float) x;

  1864                     String sf = (f).toString();

  1865                     if (textual) {

  1866                         return sf;

  1867                     }

  1868                     return sf + "f";

  1869                 }

  1870                 case CONSTANT_LONG: {

  1871                     Long ln = (Long) x;

  1872                     if (textual) {

  1873                         return ln.toString();

  1874                     }

  1875                     return ln.toString() + 'l';

  1876                 }

  1877                 case CONSTANT_INTEGER: {

  1878                     Integer in = (Integer) x;

  1879                     return in.toString();

  1880                 }

  1881                 case CONSTANT_CLASS:

  1882                     String jn = getClassName(cpx);

  1883                     if (textual) {

  1884                         if (refs != null) {

  1885                             refs[0] = jn;

  1886                         }

  1887                         return jn;

  1888                     }

  1889                     return javaName(jn);

  1890                 case CONSTANT_STRING:

  1891                     String sv = stringValue(((CPX) x).cpx, textual);

  1892                     if (textual) {

  1893                         return '"' + sv + '"';

  1894                     } else {

  1895                         return sv;

  1896                     }

  1897                 case CONSTANT_FIELD:

  1898                 case CONSTANT_METHOD:

  1899                 case CONSTANT_INTERFACEMETHOD:

  1900                     //return getShortClassName(((CPX2)x).cpx1)+"."+StringValue(((CPX2)x).cpx2);

  1901                     return javaName(getClassName(((CPX2) x).cpx1)) + "." + StringValue(((CPX2) x).cpx2);

  1903                 case CONSTANT_NAMEANDTYPE:

  1904                     return getName(((CPX2) x).cpx1) + ":" + StringValue(((CPX2) x).cpx2);

  1905                 default:

  1906                     return "UnknownTag"; //TBD

  1907             }

  1908         }

  1910         /**

  1911          * Returns resolved java type name.

  1912          */

  1913         public String javaName(String name) {

  1914             if (name == null) {

  1915                 return "null";

  1916             }

  1917             int len = name.length();

  1918             if (len == 0) {

  1919                 return "\"\"";

  1920             }

  1921             int cc = '/';

  1922             fullname:

  1923             { // xxx/yyy/zzz

  1924                 int cp;

  1925                 for (int k = 0; k < len; k += Character.charCount(cp)) {

  1926                     cp = name.codePointAt(k);

  1927                     if (cc == '/') {

  1928                         if (!isJavaIdentifierStart(cp)) {

  1929                             break fullname;

  1930                         }

  1931                     } else if (cp != '/') {

  1932                         if (!isJavaIdentifierPart(cp)) {

  1933                             break fullname;

  1934                         }

  1935                     }

  1936                     cc = cp;

  1937                 }

  1938                 return name;

  1939             }

  1940             return "\"" + name + "\"";

  1941         }

  1943         public String getName(int cpx) {

  1944             String res;

  1945             try {

  1946                 return javaName((String) cpool[cpx]); //.replace('/','.');

  1947             } catch (ArrayIndexOutOfBoundsException e) {

  1948                 return "<invalid constant pool index:" + cpx + ">";

  1949             } catch (ClassCastException e) {

  1950                 return "<invalid constant pool ref:" + cpx + ">";

  1951             }

  1952         }

  1954         /**

  1955          * Returns unqualified class name.

  1956          */

  1957         public String getShortClassName(int cpx) {

  1958             String classname = javaName(getClassName(cpx));

  1959             pkgPrefixLen = classname.lastIndexOf("/") + 1;

  1960             if (pkgPrefixLen != 0) {

  1961                 pkgPrefix = classname.substring(0, pkgPrefixLen);

  1962                 if (classname.startsWith(pkgPrefix)) {

  1963                     return classname.substring(pkgPrefixLen);

  1964                 }

  1965             }

  1966             return classname;

  1967         }

  1969         /**

  1970          * Returns source file name.

  1971          */

  1972         public String getSourceName() {

  1973             return getName(source_cpx);

  1974         }

  1976         /**

  1977          * Returns package name.

  1978          */

  1979         public String getPkgName() {

  1980             String classname = getClassName(this_class);

  1981             pkgPrefixLen = classname.lastIndexOf("/") + 1;

  1982             if (pkgPrefixLen != 0) {

  1983                 pkgPrefix = classname.substring(0, pkgPrefixLen);

  1984                 return /* ("package  " + */ pkgPrefix.substring(0, pkgPrefixLen - 1) /* + ";\n") */;

  1985             } else {

  1986                 return null;

  1987             }

  1988         }

  1990         /**

  1991          * Returns total constant pool entry count.

  1992          */

  1993         public int getCpoolCount() {

  1994             return cpool_count;

  1995         }

  1997         /**

  1998          * Returns minor version of class file.

  1999          */

  2000         public int getMinor_version() {

  2001             return minor_version;

  2002         }

  2004         /**

  2005          * Returns major version of class file.

  2006          */

  2007         public int getMajor_version() {

  2008             return major_version;

  2009         }

  2011         private boolean isJavaIdentifierStart(int cp) {

  2012             return ('a' <= cp && cp <= 'z') || ('A' <= cp && cp <= 'Z');

  2013         }

  2015         private boolean isJavaIdentifierPart(int cp) {

  2016             return isJavaIdentifierStart(cp) || ('0' <= cp && cp <= '9');

  2017         }

  2019         public String[] getNameAndType(int indx) {

  2020             return getNameAndType(indx, 0, new String[2]);

  2021         }

  2023         private String[] getNameAndType(int indx, int at, String[] arr) {

  2024             CPX2 c2 = getCpoolEntry(indx);

  2025             arr[at] = StringValue(c2.cpx1);

  2026             arr[at + 1] = StringValue(c2.cpx2);

  2027             return arr;

  2028         }

  2030         public String[] getFieldInfoName(int indx) {

  2031             CPX2 c2 = getCpoolEntry(indx);

  2032             String[] arr = new String[3];

  2033             arr[0] = getClassName(c2.cpx1);

  2034             return getNameAndType(c2.cpx2, 1, arr);

  2035         }

  2037         static byte[] findAttr(String n, AttrData[] attrs) {

  2038             for (AttrData ad : attrs) {

  2039                 if (n.equals(ad.getAttrName())) {

  2040                     return ad.getData();

  2041                 }

  2042             }

  2043             return null;

  2044         }

  2045     }

  2047     /**

  2048      * Strores field data informastion.

  2049      *

  2050      * @author Sucheta Dambalkar (Adopted code from jdis)

  2051      */

  2052     static class FieldData {

  2054         ClassData cls;

  2055         int access;

  2056         int name_index;

  2057         int descriptor_index;

  2058         int attributes_count;

  2059         int value_cpx = 0;

  2060         boolean isSynthetic = false;

  2061         boolean isDeprecated = false;

  2062         Vector attrs;

  2064         public FieldData(ClassData cls) {

  2065             this.cls = cls;

  2066         }

  2068         /**

  2069          * Read and store field info.

  2070          */

  2071         public void read(DataInputStream in) throws IOException {

  2072             access = in.readUnsignedShort();

  2073             name_index = in.readUnsignedShort();

  2074             descriptor_index = in.readUnsignedShort();

  2075             // Read the attributes

  2076             int attributes_count = in.readUnsignedShort();

  2077             attrs = new Vector(attributes_count);

  2078             for (int i = 0; i < attributes_count; i++) {

  2079                 int attr_name_index = in.readUnsignedShort();

  2080                 if (cls.getTag(attr_name_index) != CONSTANT_UTF8) {

  2081                     continue;

  2082                 }

  2083                 String attr_name = cls.getString(attr_name_index);

  2084                 if (attr_name.equals("ConstantValue")) {

  2085                     if (in.readInt() != 2) {

  2086                         throw new ClassFormatError("invalid ConstantValue attr length");

  2087                     }

  2088                     value_cpx = in.readUnsignedShort();

  2089                     AttrData attr = new AttrData(cls);

  2090                     attr.read(attr_name_index);

  2091                     attrs.addElement(attr);

  2092                 } else if (attr_name.equals("Synthetic")) {

  2093                     if (in.readInt() != 0) {

  2094                         throw new ClassFormatError("invalid Synthetic attr length");

  2095                     }

  2096                     isSynthetic = true;

  2097                     AttrData attr = new AttrData(cls);

  2098                     attr.read(attr_name_index);

  2099                     attrs.addElement(attr);

  2100                 } else if (attr_name.equals("Deprecated")) {

  2101                     if (in.readInt() != 0) {

  2102                         throw new ClassFormatError("invalid Synthetic attr length");

  2103                     }

  2104                     isDeprecated = true;

  2105                     AttrData attr = new AttrData(cls);

  2106                     attr.read(attr_name_index);

  2107                     attrs.addElement(attr);

  2108                 } else {

  2109                     AttrData attr = new AttrData(cls);

  2110                     attr.read(attr_name_index, in);

  2111                     attrs.addElement(attr);

  2112                 }

  2113             }

  2115         }  // end read

  2117         public boolean isStatic() {

  2118             return (access & ACC_STATIC) != 0;

  2119         }

  2121         /**

  2122          * Returns access of a field.

  2123          */

  2124         public String[] getAccess() {

  2125             Vector v = new Vector();

  2126             if ((access & ACC_PUBLIC) != 0) {

  2127                 v.addElement("public");

  2128             }

  2129             if ((access & ACC_PRIVATE) != 0) {

  2130                 v.addElement("private");

  2131             }

  2132             if ((access & ACC_PROTECTED) != 0) {

  2133                 v.addElement("protected");

  2134             }

  2135             if ((access & ACC_STATIC) != 0) {

  2136                 v.addElement("static");

  2137             }

  2138             if ((access & ACC_FINAL) != 0) {

  2139                 v.addElement("final");

  2140             }

  2141             if ((access & ACC_VOLATILE) != 0) {

  2142                 v.addElement("volatile");

  2143             }

  2144             if ((access & ACC_TRANSIENT) != 0) {

  2145                 v.addElement("transient");

  2146             }

  2147             String[] accflags = new String[v.size()];

  2148             v.copyInto(accflags);

  2149             return accflags;

  2150         }

  2152         /**

  2153          * Returns name of a field.

  2154          */

  2155         public String getName() {

  2156             return cls.getStringValue(name_index);

  2157         }

  2159         /**

  2160          * Returns internal signature of a field

  2161          */

  2162         public String getInternalSig() {

  2163             return cls.getStringValue(descriptor_index);

  2164         }

  2166         /**

  2167          * Returns true if field is synthetic.

  2168          */

  2169         public boolean isSynthetic() {

  2170             return isSynthetic;

  2171         }

  2173         /**

  2174          * Returns true if field is deprecated.

  2175          */

  2176         public boolean isDeprecated() {

  2177             return isDeprecated;

  2178         }

  2180         /**

  2181          * Returns index of constant value in cpool.

  2182          */

  2183         public int getConstantValueIndex() {

  2184             return (value_cpx);

  2185         }

  2187         /**

  2188          * Returns list of attributes of field.

  2189          */

  2190         public Vector getAttributes() {

  2191             return attrs;

  2192         }

  2194         public byte[] findAnnotationData(boolean classRetention) {

  2195             String n = classRetention

  2196                 ? "RuntimeInvisibleAnnotations" : // NOI18N

  2197                 "RuntimeVisibleAnnotations"; // NOI18N

  2198             AttrData[] arr = new AttrData[attrs.size()];

  2199             attrs.copyInto(arr);

  2200             return ClassData.findAttr(n, arr);

  2201         }

  2202     }

  2204     /**

  2205      * A JavaScript optimized replacement for Hashtable.

  2206      *

  2207      * @author Jaroslav Tulach <jtulach@netbeans.org>

  2208      */

  2209     private static final class Hashtable {

  2211         private Object[] keys;

  2212         private Object[] values;

  2214         Hashtable(int i) {

  2215             this();

  2216         }

  2218         Hashtable(int i, double d) {

  2219             this();

  2220         }

  2222         Hashtable() {

  2223         }

  2225         synchronized void put(Object key, Object val) {

  2226             int[] where = {-1, -1};

  2227             Object found = get(key, where);

  2228             if (where[0] != -1) {

  2229                 // key exists

  2230                 values[where[0]] = val;

  2231             } else {

  2232                 if (where[1] != -1) {

  2233                     // null found

  2234                     keys[where[1]] = key;

  2235                     values[where[1]] = val;

  2236                 } else {

  2237                     if (keys == null) {

  2238                         keys = new Object[11];

  2239                         values = new Object[11];

  2240                         keys[0] = key;

  2241                         values[0] = val;

  2242                     } else {

  2243                         Object[] newKeys = new Object[keys.length * 2];

  2244                         Object[] newValues = new Object[values.length * 2];

  2245                         for (int i = 0; i < keys.length; i++) {

  2246                             newKeys[i] = keys[i];

  2247                             newValues[i] = values[i];

  2248                         }

  2249                         newKeys[keys.length] = key;

  2250                         newValues[keys.length] = val;

  2251                         keys = newKeys;

  2252                         values = newValues;

  2253                     }

  2254                 }

  2255             }

  2256         }

  2258         Object get(Object key) {

  2259             return get(key, null);

  2260         }

  2262         private synchronized Object get(Object key, int[] foundAndNull) {

  2263             if (keys == null) {

  2264                 return null;

  2265             }

  2266             for (int i = 0; i < keys.length; i++) {

  2267                 if (keys[i] == null) {

  2268                     if (foundAndNull != null) {

  2269                         foundAndNull[1] = i;

  2270                     }

  2271                 } else if (keys[i].equals(key)) {

  2272                     if (foundAndNull != null) {

  2273                         foundAndNull[0] = i;

  2274                     }

  2275                     return values[i];

  2276                 }

  2277             }

  2278             return null;

  2279         }

  2280     }

  2282     /**

  2283      * Strores InnerClass data informastion.

  2284      *

  2285      * @author Sucheta Dambalkar (Adopted code from jdis)

  2286      */

  2287     private static class InnerClassData {

  2289         ClassData cls;

  2290         int inner_class_info_index, outer_class_info_index, inner_name_index, access;

  2292         public InnerClassData(ClassData cls) {

  2293             this.cls = cls;

  2295         }

  2297         /**

  2298          * Read Innerclass attribute data.

  2299          */

  2300         public void read(DataInputStream in) throws IOException {

  2301             inner_class_info_index = in.readUnsignedShort();

  2302             outer_class_info_index = in.readUnsignedShort();

  2303             inner_name_index = in.readUnsignedShort();

  2304             access = in.readUnsignedShort();

  2305         }  // end read

  2307         /**

  2308          * Returns the access of this class or interface.

  2309          */

  2310         public String[] getAccess() {

  2311             Vector v = new Vector();

  2312             if ((access & ACC_PUBLIC) != 0) {

  2313                 v.addElement("public");

  2314             }

  2315             if ((access & ACC_FINAL) != 0) {

  2316                 v.addElement("final");

  2317             }

  2318             if ((access & ACC_ABSTRACT) != 0) {

  2319                 v.addElement("abstract");

  2320             }

  2321             String[] accflags = new String[v.size()];

  2322             v.copyInto(accflags);

  2323             return accflags;

  2324         }

  2325     } // end InnerClassData

  2327     /**

  2328      * Strores LineNumberTable data information.

  2329      *

  2330      * @author Sucheta Dambalkar (Adopted code from jdis)

  2331      */

  2332     private static class LineNumData {

  2334         short start_pc, line_number;

  2336         public LineNumData() {

  2337         }

  2339         /**

  2340          * Read LineNumberTable attribute.

  2341          */

  2342         public LineNumData(DataInputStream in) throws IOException {

  2343             start_pc = in.readShort();

  2344             line_number = in.readShort();

  2346         }

  2347     }

  2349     /**

  2350      * Strores LocalVariableTable data information.

  2351      *

  2352      * @author Sucheta Dambalkar (Adopted code from jdis)

  2353      */

  2354     private static class LocVarData {

  2356         short start_pc, length, name_cpx, sig_cpx, slot;

  2358         public LocVarData() {

  2359         }

  2361         /**

  2362          * Read LocalVariableTable attribute.

  2363          */

  2364         public LocVarData(DataInputStream in) throws IOException {

  2365             start_pc = in.readShort();

  2366             length = in.readShort();

  2367             name_cpx = in.readShort();

  2368             sig_cpx = in.readShort();

  2369             slot = in.readShort();

  2371         }

  2372     }

  2373     /**

  2374      * Strores method data informastion.

  2375      *

  2376      * @author Sucheta Dambalkar (Adopted code from jdis)

  2377      */

  2378     static class MethodData {

  2380         ClassData cls;

  2381         int access;

  2382         int name_index;

  2383         int descriptor_index;

  2384         int attributes_count;

  2385         byte[] code;

  2386         Vector exception_table = new Vector(0);

  2387         Vector lin_num_tb = new Vector(0);

  2388         Vector loc_var_tb = new Vector(0);

  2389         StackMapTableData[] stackMapTable;

  2390         StackMapData[] stackMap;

  2391         int[] exc_index_table = null;

  2392         Vector attrs = new Vector(0);

  2393         Vector code_attrs = new Vector(0);

  2394         int max_stack, max_locals;

  2395         boolean isSynthetic = false;

  2396         boolean isDeprecated = false;

  2398         public MethodData(ClassData cls) {

  2399             this.cls = cls;

  2400         }

  2402         /**

  2403          * Read method info.

  2404          */

  2405         public void read(DataInputStream in) throws IOException {

  2406             access = in.readUnsignedShort();

  2407             name_index = in.readUnsignedShort();

  2408             descriptor_index = in.readUnsignedShort();

  2409             int attributes_count = in.readUnsignedShort();

  2410             for (int i = 0; i < attributes_count; i++) {

  2411                 int attr_name_index = in.readUnsignedShort();

  2413                 readAttr:

  2414                 {

  2415                     if (cls.getTag(attr_name_index) == CONSTANT_UTF8) {

  2416                         String attr_name = cls.getString(attr_name_index);

  2417                         if (attr_name.equals("Code")) {

  2418                             readCode(in);

  2419                             AttrData attr = new AttrData(cls);

  2420                             attr.read(attr_name_index);

  2421                             attrs.addElement(attr);

  2422                             break readAttr;

  2423                         } else if (attr_name.equals("Exceptions")) {

  2424                             readExceptions(in);

  2425                             AttrData attr = new AttrData(cls);

  2426                             attr.read(attr_name_index);

  2427                             attrs.addElement(attr);

  2428                             break readAttr;

  2429                         } else if (attr_name.equals("Synthetic")) {

  2430                             if (in.readInt() != 0) {

  2431                                 throw new ClassFormatError("invalid Synthetic attr length");

  2432                             }

  2433                             isSynthetic = true;

  2434                             AttrData attr = new AttrData(cls);

  2435                             attr.read(attr_name_index);

  2436                             attrs.addElement(attr);

  2437                             break readAttr;

  2438                         } else if (attr_name.equals("Deprecated")) {

  2439                             if (in.readInt() != 0) {

  2440                                 throw new ClassFormatError("invalid Synthetic attr length");

  2441                             }

  2442                             isDeprecated = true;

  2443                             AttrData attr = new AttrData(cls);

  2444                             attr.read(attr_name_index);

  2445                             attrs.addElement(attr);

  2446                             break readAttr;

  2447                         }

  2448                     }

  2449                     AttrData attr = new AttrData(cls);

  2450                     attr.read(attr_name_index, in);

  2451                     attrs.addElement(attr);

  2452                 }

  2453             }

  2454         }

  2456         /**

  2457          * Read code attribute info.

  2458          */

  2459         public void readCode(DataInputStream in) throws IOException {

  2461             int attr_length = in.readInt();

  2462             max_stack = in.readUnsignedShort();

  2463             max_locals = in.readUnsignedShort();

  2464             int codelen = in.readInt();

  2466             code = new byte[codelen];

  2467             int totalread = 0;

  2468             while (totalread < codelen) {

  2469                 totalread += in.read(code, totalread, codelen - totalread);

  2470             }

  2471             //      in.read(code, 0, codelen);

  2472             int clen = 0;

  2473             readExceptionTable(in);

  2474             int code_attributes_count = in.readUnsignedShort();

  2476             for (int k = 0; k < code_attributes_count; k++) {

  2477                 int table_name_index = in.readUnsignedShort();

  2478                 int table_name_tag = cls.getTag(table_name_index);

  2479                 AttrData attr = new AttrData(cls);

  2480                 if (table_name_tag == CONSTANT_UTF8) {

  2481                     String table_name_tstr = cls.getString(table_name_index);

  2482                     if (table_name_tstr.equals("LineNumberTable")) {

  2483                         readLineNumTable(in);

  2484                         attr.read(table_name_index);

  2485                     } else if (table_name_tstr.equals("LocalVariableTable")) {

  2486                         readLocVarTable(in);

  2487                         attr.read(table_name_index);

  2488                     } else if (table_name_tstr.equals("StackMapTable")) {

  2489                         readStackMapTable(in);

  2490                         attr.read(table_name_index);

  2491                     } else if (table_name_tstr.equals("StackMap")) {

  2492                         readStackMap(in);

  2493                         attr.read(table_name_index);

  2494                     } else {

  2495                         attr.read(table_name_index, in);

  2496                     }

  2497                     code_attrs.addElement(attr);

  2498                     continue;

  2499                 }

  2501                 attr.read(table_name_index, in);

  2502                 code_attrs.addElement(attr);

  2503             }

  2504         }

  2506         /**

  2507          * Read exception table info.

  2508          */

  2509         void readExceptionTable(DataInputStream in) throws IOException {

  2510             int exception_table_len = in.readUnsignedShort();

  2511             exception_table = new Vector(exception_table_len);

  2512             for (int l = 0; l < exception_table_len; l++) {

  2513                 exception_table.addElement(new TrapData(in, l));

  2514             }

  2515         }

  2517         /**

  2518          * Read LineNumberTable attribute info.

  2519          */

  2520         void readLineNumTable(DataInputStream in) throws IOException {

  2521             int attr_len = in.readInt(); // attr_length

  2522             int lin_num_tb_len = in.readUnsignedShort();

  2523             lin_num_tb = new Vector(lin_num_tb_len);

  2524             for (int l = 0; l < lin_num_tb_len; l++) {

  2525                 lin_num_tb.addElement(new LineNumData(in));

  2526             }

  2527         }

  2529         /**

  2530          * Read LocalVariableTable attribute info.

  2531          */

  2532         void readLocVarTable(DataInputStream in) throws IOException {

  2533             int attr_len = in.readInt(); // attr_length

  2534             int loc_var_tb_len = in.readUnsignedShort();

  2535             loc_var_tb = new Vector(loc_var_tb_len);

  2536             for (int l = 0; l < loc_var_tb_len; l++) {

  2537                 loc_var_tb.addElement(new LocVarData(in));

  2538             }

  2539         }

  2541         /**

  2542          * Read Exception attribute info.

  2543          */

  2544         public void readExceptions(DataInputStream in) throws IOException {

  2545             int attr_len = in.readInt(); // attr_length in prog

  2546             int num_exceptions = in.readUnsignedShort();

  2547             exc_index_table = new int[num_exceptions];

  2548             for (int l = 0; l < num_exceptions; l++) {

  2549                 int exc = in.readShort();

  2550                 exc_index_table[l] = exc;

  2551             }

  2552         }

  2554         /**

  2555          * Read StackMapTable attribute info.

  2556          */

  2557         void readStackMapTable(DataInputStream in) throws IOException {

  2558             int attr_len = in.readInt();  //attr_length

  2559             int stack_map_tb_len = in.readUnsignedShort();

  2560             stackMapTable = new StackMapTableData[stack_map_tb_len];

  2561             for (int i = 0; i < stack_map_tb_len; i++) {

  2562                 stackMapTable[i] = StackMapTableData.getInstance(in, this);

  2563             }

  2564         }

  2566         /**

  2567          * Read StackMap attribute info.

  2568          */

  2569         void readStackMap(DataInputStream in) throws IOException {

  2570             int attr_len = in.readInt();  //attr_length

  2571             int stack_map_len = in.readUnsignedShort();

  2572             stackMap = new StackMapData[stack_map_len];

  2573             for (int i = 0; i < stack_map_len; i++) {

  2574                 stackMap[i] = new StackMapData(in, this);

  2575             }

  2576         }

  2578         /**

  2579          * Return access of the method.

  2580          */

  2581         public int getAccess() {

  2582             return access;

  2583         }

  2585         /**

  2586          * Return name of the method.

  2587          */

  2588         public String getName() {

  2589             return cls.getStringValue(name_index);

  2590         }

  2592         /**

  2593          * Return internal siganature of the method.

  2594          */

  2595         public String getInternalSig() {

  2596             return cls.getStringValue(descriptor_index);

  2597         }

  2599         /**

  2600          * Return code attribute data of a method.

  2601          */

  2602         public byte[] getCode() {

  2603             return code;

  2604         }

  2606         /**

  2607          * Return LineNumberTable size.

  2608          */

  2609         public int getnumlines() {

  2610             return lin_num_tb.size();

  2611         }

  2613         /**

  2614          * Return LineNumberTable

  2615          */

  2616         public Vector getlin_num_tb() {

  2617             return lin_num_tb;

  2618         }

  2620         /**

  2621          * Return LocalVariableTable size.

  2622          */

  2623         public int getloc_var_tbsize() {

  2624             return loc_var_tb.size();

  2625         }

  2627         /**

  2628          * Return LocalVariableTable.

  2629          */

  2630         public Vector getloc_var_tb() {

  2631             return loc_var_tb;

  2632         }

  2634         /**

  2635          * Return StackMap.

  2636          */

  2637         public StackMapData[] getStackMap() {

  2638             return stackMap;

  2639         }

  2641         /**

  2642          * Return StackMapTable.

  2643          */

  2644         public StackMapTableData[] getStackMapTable() {

  2645             return stackMapTable;

  2646         }

  2648         public StackMapIterator createStackMapIterator() {

  2649             return new StackMapIterator(this);

  2650         }

  2652         /**

  2653          * Return true if method is static

  2654          */

  2655         public boolean isStatic() {

  2656             if ((access & ACC_STATIC) != 0) {

  2657                 return true;

  2658             }

  2659             return false;

  2660         }

  2662         /**

  2663          * Return max depth of operand stack.

  2664          */

  2665         public int getMaxStack() {

  2666             return max_stack;

  2667         }

  2669         /**

  2670          * Return number of local variables.

  2671          */

  2672         public int getMaxLocals() {

  2673             return max_locals;

  2674         }

  2676         /**

  2677          * Return exception index table in Exception attribute.

  2678          */

  2679         public int[] get_exc_index_table() {

  2680             return exc_index_table;

  2681         }

  2683         /**

  2684          * Return exception table in code attributre.

  2685          */

  2686         public TrapDataIterator getTrapDataIterator() {

  2687             return new TrapDataIterator(exception_table);

  2688         }

  2690         /**

  2691          * Return method attributes.

  2692          */

  2693         public Vector getAttributes() {

  2694             return attrs;

  2695         }

  2697         /**

  2698          * Return code attributes.

  2699          */

  2700         public Vector getCodeAttributes() {

  2701             return code_attrs;

  2702         }

  2704         /**

  2705          * Return true if method id synthetic.

  2706          */

  2707         public boolean isSynthetic() {

  2708             return isSynthetic;

  2709         }

  2711         /**

  2712          * Return true if method is deprecated.

  2713          */

  2714         public boolean isDeprecated() {

  2715             return isDeprecated;

  2716         }

  2718         public byte[] findAnnotationData(boolean classRetention) {

  2719             String n = classRetention

  2720                 ? "RuntimeInvisibleAnnotations" : // NOI18N

  2721                 "RuntimeVisibleAnnotations"; // NOI18N

  2722             AttrData[] arr = new AttrData[attrs.size()];

  2723             attrs.copyInto(arr);

  2724             return ClassData.findAttr(n, arr);

  2725         }

  2727         public boolean isConstructor() {

  2728             return "<init>".equals(getName());

  2729         }

  2730     }

  2732     /* represents one entry of StackMap attribute

  2733      */

  2734     private static class StackMapData {

  2736         final int offset;

  2737         final int[] locals;

  2738         final int[] stack;

  2740         StackMapData(int offset, int[] locals, int[] stack) {

  2741             this.offset = offset;

  2742             this.locals = locals;

  2743             this.stack = stack;

  2744         }

  2746         StackMapData(DataInputStream in, MethodData method) throws IOException {

  2747             offset = in.readUnsignedShort();

  2748             int local_size = in.readUnsignedShort();

  2749             locals = readTypeArray(in, local_size, method);

  2750             int stack_size = in.readUnsignedShort();

  2751             stack = readTypeArray(in, stack_size, method);

  2752         }

  2754         static final int[] readTypeArray(DataInputStream in, int length, MethodData method) throws IOException {

  2755             int[] types = new int[length];

  2756             for (int i = 0; i < length; i++) {

  2757                 types[i] = readType(in, method);

  2758             }

  2759             return types;

  2760         }

  2762         static final int readType(DataInputStream in, MethodData method) throws IOException {

  2763             int type = in.readUnsignedByte();

  2764             if (type == ITEM_Object || type == ITEM_NewObject) {

  2765                 type = type | (in.readUnsignedShort() << 8);

  2766             }

  2767             return type;

  2768         }

  2769     }

  2771     static final class StackMapIterator {

  2773         private final StackMapTableData[] stackMapTable;

  2774         private final TypeArray argTypes;

  2775         private final TypeArray localTypes;

  2776         private final TypeArray stackTypes;

  2777         private int nextFrameIndex;

  2778         private int lastFrameByteCodeOffset;

  2779         private int byteCodeOffset;

  2781         StackMapIterator(final MethodData methodData) {

  2782             this(methodData.getStackMapTable(),

  2783                 methodData.getInternalSig(),

  2784                 methodData.isStatic());

  2785         }

  2787         StackMapIterator(final StackMapTableData[] stackMapTable,

  2788             final String methodSignature,

  2789             final boolean isStaticMethod) {

  2790             this.stackMapTable = (stackMapTable != null)

  2791                 ? stackMapTable

  2792                 : new StackMapTableData[0];

  2794             argTypes = getArgTypes(methodSignature, isStaticMethod);

  2795             localTypes = new TypeArray();

  2796             stackTypes = new TypeArray();

  2798             localTypes.addAll(argTypes);

  2800             lastFrameByteCodeOffset = -1;

  2801             advanceBy(0);

  2802         }

  2804         public String getFrameAsString() {

  2805             return (nextFrameIndex == 0)

  2806                 ? StackMapTableData.toString("INITIAL", 0, null, null)

  2807                 : stackMapTable[nextFrameIndex - 1].toString();

  2808         }

  2810         public int getFrameIndex() {

  2811             return nextFrameIndex;

  2812         }

  2814         public TypeArray getFrameStack() {

  2815             return stackTypes;

  2816         }

  2818         public TypeArray getFrameLocals() {

  2819             return localTypes;

  2820         }

  2822         public TypeArray getArguments() {

  2823             return argTypes;

  2824         }

  2826         public void advanceBy(final int numByteCodes) {

  2827             if (numByteCodes < 0) {

  2828                 throw new IllegalStateException("Forward only iterator");

  2829             }

  2831             byteCodeOffset += numByteCodes;

  2832             while ((nextFrameIndex < stackMapTable.length)

  2833                 && ((byteCodeOffset - lastFrameByteCodeOffset)

  2834                 >= (stackMapTable[nextFrameIndex].offsetDelta

  2835                 + 1))) {

  2836                 final StackMapTableData nextFrame = stackMapTable[nextFrameIndex];

  2838                 lastFrameByteCodeOffset += nextFrame.offsetDelta + 1;

  2839                 nextFrame.applyTo(localTypes, stackTypes);

  2841                 ++nextFrameIndex;

  2842             }

  2843         }

  2845         public void advanceTo(final int nextByteCodeOffset) {

  2846             advanceBy(nextByteCodeOffset - byteCodeOffset);

  2847         }

  2849         private static TypeArray getArgTypes(final String methodSignature,

  2850             final boolean isStaticMethod) {

  2851             final TypeArray argTypes = new TypeArray();

  2853             if (!isStaticMethod) {

  2854                 argTypes.add(ITEM_Object);

  2855             }

  2857             if (methodSignature.charAt(0) != '(') {

  2858                 throw new IllegalArgumentException("Invalid method signature");

  2859             }

  2861             final int length = methodSignature.length();

  2862             boolean skipType = false;

  2863             int argType;

  2864             for (int i = 1; i < length; ++i) {

  2865                 switch (methodSignature.charAt(i)) {

  2866                     case 'B':

  2867                     case 'C':

  2868                     case 'S':

  2869                     case 'Z':

  2870                     case 'I':

  2871                         argType = ITEM_Integer;

  2872                         break;

  2873                     case 'J':

  2874                         argType = ITEM_Long;

  2875                         break;

  2876                     case 'F':

  2877                         argType = ITEM_Float;

  2878                         break;

  2879                     case 'D':

  2880                         argType = ITEM_Double;

  2881                         break;

  2882                     case 'L': {

  2883                         i = methodSignature.indexOf(';', i + 1);

  2884                         if (i == -1) {

  2885                             throw new IllegalArgumentException(

  2886                                 "Invalid method signature");

  2887                         }

  2888                         argType = ITEM_Object;

  2889                         break;

  2890                     }

  2891                     case ')':

  2892                         // not interested in the return value type

  2893                         return argTypes;

  2894                     case '[':

  2895                         if (!skipType) {

  2896                             argTypes.add(ITEM_Object);

  2897                             skipType = true;

  2898                         }

  2899                         continue;

  2901                     default:

  2902                         throw new IllegalArgumentException(

  2903                             "Invalid method signature");

  2904                 }

  2906                 if (!skipType) {

  2907                     argTypes.add(argType);

  2908                 } else {

  2909                     skipType = false;

  2910                 }

  2911             }

  2913             return argTypes;

  2914         }

  2915     }

  2916     /* represents one entry of StackMapTable attribute

  2917      */

  2919     private static abstract class StackMapTableData {

  2921         final int frameType;

  2922         int offsetDelta;

  2924         StackMapTableData(int frameType) {

  2925             this.frameType = frameType;

  2926         }

  2928         abstract void applyTo(TypeArray localTypes, TypeArray stackTypes);

  2930         protected static String toString(

  2931             final String frameType,

  2932             final int offset,

  2933             final int[] localTypes,

  2934             final int[] stackTypes) {

  2935             final StringBuilder sb = new StringBuilder(frameType);

  2937             sb.append("(off: +").append(offset);

  2938             if (localTypes != null) {

  2939                 sb.append(", locals: ");

  2940                 appendTypes(sb, localTypes);

  2941             }

  2942             if (stackTypes != null) {

  2943                 sb.append(", stack: ");

  2944                 appendTypes(sb, stackTypes);

  2945             }

  2946             sb.append(')');

  2948             return sb.toString();

  2949         }

  2951         private static void appendTypes(final StringBuilder sb, final int[] types) {

  2952             sb.append('[');

  2953             if (types.length > 0) {

  2954                 sb.append(TypeArray.typeString(types[0]));

  2955                 for (int i = 1; i < types.length; ++i) {

  2956                     sb.append(", ");

  2957                     sb.append(TypeArray.typeString(types[i]));

  2958                 }

  2959             }

  2960             sb.append(']');

  2961         }

  2963         private static class SameFrame extends StackMapTableData {

  2965             SameFrame(int frameType, int offsetDelta) {

  2966                 super(frameType);

  2967                 this.offsetDelta = offsetDelta;

  2968             }

  2970             @Override

  2971             void applyTo(TypeArray localTypes, TypeArray stackTypes) {

  2972                 stackTypes.clear();

  2973             }

  2975             @Override

  2976             public String toString() {

  2977                 return toString("SAME" + ((frameType == SAME_FRAME_EXTENDED)

  2978                     ? "_FRAME_EXTENDED" : ""),

  2979                     offsetDelta,

  2980                     null, null);

  2981             }

  2982         }

  2984         private static class SameLocals1StackItem extends StackMapTableData {

  2986             final int[] stack;

  2988             SameLocals1StackItem(int frameType, int offsetDelta, int[] stack) {

  2989                 super(frameType);

  2990                 this.offsetDelta = offsetDelta;

  2991                 this.stack = stack;

  2992             }

  2994             @Override

  2995             void applyTo(TypeArray localTypes, TypeArray stackTypes) {

  2996                 stackTypes.setAll(stack);

  2997             }

  2999             @Override

  3000             public String toString() {

  3001                 return toString(

  3002                     "SAME_LOCALS_1_STACK_ITEM"

  3003                     + ((frameType == SAME_LOCALS_1_STACK_ITEM_EXTENDED)

  3004                     ? "_EXTENDED" : ""),

  3005                     offsetDelta,

  3006                     null, stack);

  3007             }

  3008         }

  3010         private static class ChopFrame extends StackMapTableData {

  3012             ChopFrame(int frameType, int offsetDelta) {

  3013                 super(frameType);

  3014                 this.offsetDelta = offsetDelta;

  3015             }

  3017             @Override

  3018             void applyTo(TypeArray localTypes, TypeArray stackTypes) {

  3019                 localTypes.setSize(localTypes.getSize()

  3020                     - (SAME_FRAME_EXTENDED - frameType));

  3021                 stackTypes.clear();

  3022             }

  3024             @Override

  3025             public String toString() {

  3026                 return toString("CHOP", offsetDelta, null, null);

  3027             }

  3028         }

  3030         private static class AppendFrame extends StackMapTableData {

  3032             final int[] locals;

  3034             AppendFrame(int frameType, int offsetDelta, int[] locals) {

  3035                 super(frameType);

  3036                 this.offsetDelta = offsetDelta;

  3037                 this.locals = locals;

  3038             }

  3040             @Override

  3041             void applyTo(TypeArray localTypes, TypeArray stackTypes) {

  3042                 localTypes.addAll(locals);

  3043                 stackTypes.clear();

  3044             }

  3046             @Override

  3047             public String toString() {

  3048                 return toString("APPEND", offsetDelta, locals, null);

  3049             }

  3050         }

  3052         private static class FullFrame extends StackMapTableData {

  3054             final int[] locals;

  3055             final int[] stack;

  3057             FullFrame(int offsetDelta, int[] locals, int[] stack) {

  3058                 super(FULL_FRAME);

  3059                 this.offsetDelta = offsetDelta;

  3060                 this.locals = locals;

  3061                 this.stack = stack;

  3062             }

  3064             @Override

  3065             void applyTo(TypeArray localTypes, TypeArray stackTypes) {

  3066                 localTypes.setAll(locals);

  3067                 stackTypes.setAll(stack);

  3068             }

  3070             @Override

  3071             public String toString() {

  3072                 return toString("FULL", offsetDelta, locals, stack);

  3073             }

  3074         }

  3076         static StackMapTableData getInstance(DataInputStream in, MethodData method)

  3077             throws IOException {

  3078             int frameType = in.readUnsignedByte();

  3080             if (frameType < SAME_FRAME_BOUND) {

  3081                 // same_frame

  3082                 return new SameFrame(frameType, frameType);

  3083             } else if (SAME_FRAME_BOUND <= frameType && frameType < SAME_LOCALS_1_STACK_ITEM_BOUND) {

  3084                 // same_locals_1_stack_item_frame

  3085                 // read additional single stack element

  3086                 return new SameLocals1StackItem(frameType,

  3087                     (frameType - SAME_FRAME_BOUND),

  3088                     StackMapData.readTypeArray(in, 1, method));

  3089             } else if (frameType == SAME_LOCALS_1_STACK_ITEM_EXTENDED) {

  3090                 // same_locals_1_stack_item_extended

  3091                 return new SameLocals1StackItem(frameType,

  3092                     in.readUnsignedShort(),

  3093                     StackMapData.readTypeArray(in, 1, method));

  3094             } else if (SAME_LOCALS_1_STACK_ITEM_EXTENDED < frameType && frameType < SAME_FRAME_EXTENDED) {

  3095                 // chop_frame or same_frame_extended

  3096                 return new ChopFrame(frameType, in.readUnsignedShort());

  3097             } else if (frameType == SAME_FRAME_EXTENDED) {

  3098                 // chop_frame or same_frame_extended

  3099                 return new SameFrame(frameType, in.readUnsignedShort());

  3100             } else if (SAME_FRAME_EXTENDED < frameType && frameType < FULL_FRAME) {

  3101                 // append_frame

  3102                 return new AppendFrame(frameType, in.readUnsignedShort(),

  3103                     StackMapData.readTypeArray(in, frameType - SAME_FRAME_EXTENDED, method));

  3104             } else if (frameType == FULL_FRAME) {

  3105                 // full_frame

  3106                 int offsetDelta = in.readUnsignedShort();

  3107                 int locals_size = in.readUnsignedShort();

  3108                 int[] locals = StackMapData.readTypeArray(in, locals_size, method);

  3109                 int stack_size = in.readUnsignedShort();

  3110                 int[] stack = StackMapData.readTypeArray(in, stack_size, method);

  3111                 return new FullFrame(offsetDelta, locals, stack);

  3112             } else {

  3113                 throw new ClassFormatError("unrecognized frame_type in StackMapTable");

  3114             }

  3115         }

  3116     }

  3118     /**

  3119      * Stores exception table data in code attribute.

  3120      *

  3121      * @author Sucheta Dambalkar (Adopted code from jdis)

  3122      */

  3123     static final class TrapData {

  3125         public final short start_pc;

  3126         public final short end_pc;

  3127         public final short handler_pc;

  3128         public final short catch_cpx;

  3129         final int num;

  3131         /**

  3132          * Read and store exception table data in code attribute.

  3133          */

  3134         TrapData(DataInputStream in, int num) throws IOException {

  3135             this.num = num;

  3136             start_pc = in.readShort();

  3137             end_pc = in.readShort();

  3138             handler_pc = in.readShort();

  3139             catch_cpx = in.readShort();

  3140         }

  3142         /**

  3143          * returns recommended identifier

  3144          */

  3145         public String ident() {

  3146             return "t" + num;

  3147         }

  3148     }

  3149     /**

  3150      *

  3151      * @author Jaroslav Tulach <jtulach@netbeans.org>

  3152      */

  3153     static final class TrapDataIterator {

  3155         private final Hashtable exStart = new Hashtable();

  3156         private final Hashtable exStop = new Hashtable();

  3157         private TrapData[] current = new TrapData[10];

  3158         private int currentCount;

  3160         TrapDataIterator(Vector exceptionTable) {

  3161             for (int i = 0; i < exceptionTable.size(); i++) {

  3162                 final TrapData td = (TrapData) exceptionTable.elementAt(i);

  3163                 put(exStart, td.start_pc, td);

  3164                 put(exStop, td.end_pc, td);

  3165             }

  3166         }

  3168         private static void put(Hashtable h, short key, TrapData td) {

  3169             Short s = Short.valueOf((short) key);

  3170             Vector v = (Vector) h.get(s);

  3171             if (v == null) {

  3172                 v = new Vector(1);

  3173                 h.put(s, v);

  3174             }

  3175             v.add(td);

  3176         }

  3178         private boolean processAll(Hashtable h, Short key, boolean add) {

  3179             boolean change = false;

  3180             Vector v = (Vector) h.get(key);

  3181             if (v != null) {

  3182                 int s = v.size();

  3183                 for (int i = 0; i < s; i++) {

  3184                     TrapData td = (TrapData) v.elementAt(i);

  3185                     if (add) {

  3186                         add(td);

  3187                         change = true;

  3188                     } else {

  3189                         remove(td);

  3190                         change = true;

  3191                     }

  3192                 }

  3193             }

  3194             return change;

  3195         }

  3197         public boolean advanceTo(int i) {

  3198             Short s = Short.valueOf((short) i);

  3199             boolean ch1 = processAll(exStart, s, true);

  3200             boolean ch2 = processAll(exStop, s, false);

  3201             return ch1 || ch2;

  3202         }

  3204         public boolean useTry() {

  3205             return currentCount > 0;

  3206         }

  3208         public TrapData[] current() {

  3209             TrapData[] copy = new TrapData[currentCount];

  3210             for (int i = 0; i < currentCount; i++) {

  3211                 copy[i] = current[i];

  3212             }

  3213             return copy;

  3214         }

  3216         private void add(TrapData e) {

  3217             if (currentCount == current.length) {

  3218                 TrapData[] data = new TrapData[currentCount * 2];

  3219                 for (int i = 0; i < currentCount; i++) {

  3220                     data[i] = current[i];

  3221                 }

  3222                 current = data;

  3223             }

  3224             current[currentCount++] = e;

  3225         }

  3227         private void remove(TrapData e) {

  3228             if (currentCount == 0) {

  3229                 return;

  3230             }

  3231             int from = 0;

  3232             while (from < currentCount) {

  3233                 if (e == current[from++]) {

  3234                     break;

  3235                 }

  3236             }

  3237             while (from < currentCount) {

  3238                 current[from - 1] = current[from];

  3239                 current[from] = null;

  3240                 from++;

  3241             }

  3242             currentCount--;

  3243         }

  3244     }

  3245     static final class TypeArray {

  3247         private static final int CAPACITY_INCREMENT = 16;

  3248         private int[] types;

  3249         private int size;

  3251         public TypeArray() {

  3252         }

  3254         public TypeArray(final TypeArray initialTypes) {

  3255             setAll(initialTypes);

  3256         }

  3258         public void add(final int newType) {

  3259             ensureCapacity(size + 1);

  3260             types[size++] = newType;

  3261         }

  3263         public void addAll(final TypeArray newTypes) {

  3264             addAll(newTypes.types, 0, newTypes.size);

  3265         }

  3267         public void addAll(final int[] newTypes) {

  3268             addAll(newTypes, 0, newTypes.length);

  3269         }

  3271         public void addAll(final int[] newTypes,

  3272             final int offset,

  3273             final int count) {

  3274             if (count > 0) {

  3275                 ensureCapacity(size + count);

  3276                 arraycopy(newTypes, offset, types, size, count);

  3277                 size += count;

  3278             }

  3279         }

  3281         public void set(final int index, final int newType) {

  3282             types[index] = newType;

  3283         }

  3285         public void setAll(final TypeArray newTypes) {

  3286             setAll(newTypes.types, 0, newTypes.size);

  3287         }

  3289         public void setAll(final int[] newTypes) {

  3290             setAll(newTypes, 0, newTypes.length);

  3291         }

  3293         public void setAll(final int[] newTypes,

  3294             final int offset,

  3295             final int count) {

  3296             if (count > 0) {

  3297                 ensureCapacity(count);

  3298                 arraycopy(newTypes, offset, types, 0, count);

  3299                 size = count;

  3300             } else {

  3301                 clear();

  3302             }

  3303         }

  3305         public void setSize(final int newSize) {

  3306             if (size != newSize) {

  3307                 ensureCapacity(newSize);

  3309                 for (int i = size; i < newSize; ++i) {

  3310                     types[i] = 0;

  3311                 }

  3312                 size = newSize;

  3313             }

  3314         }

  3316         public void clear() {

  3317             size = 0;

  3318         }

  3320         public int getSize() {

  3321             return size;

  3322         }

  3324         public int get(final int index) {

  3325             return types[index];

  3326         }

  3328         public static String typeString(final int type) {

  3329             switch (type & 0xff) {

  3330                 case ITEM_Bogus:

  3331                     return "_top_";

  3332                 case ITEM_Integer:

  3333                     return "_int_";

  3334                 case ITEM_Float:

  3335                     return "_float_";

  3336                 case ITEM_Double:

  3337                     return "_double_";

  3338                 case ITEM_Long:

  3339                     return "_long_";

  3340                 case ITEM_Null:

  3341                     return "_null_";

  3342                 case ITEM_InitObject: // UninitializedThis

  3343                     return "_init_";

  3344                 case ITEM_Object:

  3345                     return "_object_";

  3346                 case ITEM_NewObject: // Uninitialized

  3347                     return "_new_";

  3348                 default:

  3349                     throw new IllegalArgumentException("Unknown type");

  3350             }

  3351         }

  3353         @Override

  3354         public String toString() {

  3355             final StringBuilder sb = new StringBuilder("[");

  3356             if (size > 0) {

  3357                 sb.append(typeString(types[0]));

  3358                 for (int i = 1; i < size; ++i) {

  3359                     sb.append(", ");

  3360                     sb.append(typeString(types[i]));

  3361                 }

  3362             }

  3364             return sb.append(']').toString();

  3365         }

  3367         private void ensureCapacity(final int minCapacity) {

  3368             if ((minCapacity == 0)

  3369                 || (types != null) && (minCapacity <= types.length)) {

  3370                 return;

  3371             }

  3373             final int newCapacity =

  3374                 ((minCapacity + CAPACITY_INCREMENT - 1) / CAPACITY_INCREMENT)

  3375                 * CAPACITY_INCREMENT;

  3376             final int[] newTypes = new int[newCapacity];

  3378             if (size > 0) {

  3379                 arraycopy(types, 0, newTypes, 0, size);

  3380             }

  3382             types = newTypes;

  3383         }

  3385         // no System.arraycopy

  3386         private void arraycopy(final int[] src, final int srcPos,

  3387             final int[] dest, final int destPos,

  3388             final int length) {

  3389             for (int i = 0; i < length; ++i) {

  3390                 dest[destPos + i] = src[srcPos + i];

  3391             }

  3392         }

  3393     }

  3394     /**

  3395      * A JavaScript ready replacement for java.util.Vector

  3396      *

  3397      * @author Jaroslav Tulach <jtulach@netbeans.org>

  3398      */

  3399     @JavaScriptPrototype(prototype = "new Array")

  3400     private static final class Vector {

  3402         private Object[] arr;

  3404         Vector() {

  3405         }

  3407         Vector(int i) {

  3408         }

  3410         void add(Object objectType) {

  3411             addElement(objectType);

  3412         }

  3414         @JavaScriptBody(args = {"obj"}, body =

  3415             "this.push(obj);")

  3416         void addElement(Object obj) {

  3417             final int s = size();

  3418             setSize(s + 1);

  3419             setElementAt(obj, s);

  3420         }

  3422         @JavaScriptBody(args = {}, body =

  3423             "return this.length;")

  3424         int size() {

  3425             return arr == null ? 0 : arr.length;

  3426         }

  3428         @JavaScriptBody(args = {"newArr"}, body =

  3429             "for (var i = 0; i < this.length; i++) {\n"

  3430             + "  newArr[i] = this[i];\n"

  3431             + "}\n")

  3432         void copyInto(Object[] newArr) {

  3433             if (arr == null) {

  3434                 return;

  3435             }

  3436             int min = Math.min(newArr.length, arr.length);

  3437             for (int i = 0; i < min; i++) {

  3438                 newArr[i] = arr[i];

  3439             }

  3440         }

  3442         @JavaScriptBody(args = {"index"}, body =

  3443             "return this[index];")

  3444         Object elementAt(int index) {

  3445             return arr[index];

  3446         }

  3448         private void setSize(int len) {

  3449             Object[] newArr = new Object[len];

  3450             copyInto(newArr);

  3451             arr = newArr;

  3452         }

  3454         @JavaScriptBody(args = {"val", "index"}, body =

  3455             "this[index] = val;")

  3456         void setElementAt(Object val, int index) {

  3457             arr[index] = val;

  3458         }

  3459     }

  3461 }

author	Lubomir Nerad <lubomir.nerad@oracle.com>
	Fri, 12 Apr 2013 18:48:48 +0200
branch	closure
changeset 967	f19f17f8f8dc
parent 810	9eb750594b15
child 1085	6a4ef883e233
permissions	-rw-r--r--