/*

 * Copyright 2002-2005 Sun Microsystems, Inc.  All Rights Reserved.

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

 *

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

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

 * published by the Free Software Foundation.  Sun designates this

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

 * by Sun in the LICENSE file that accompanied this code.

 *

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

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

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

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

 * accompanied this code).

 *

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

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

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

 *

 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 */

package sun.tools.javap;

import java.io.IOException;

import java.io.InputStream;

import java.util.Hashtable;

import java.util.Vector;

public class Tables implements Constants {

    /**

     * Define mnemocodes table.

     */

  static  Hashtable mnemocodes = new Hashtable(301, 0.5f);

  static  String opcExtNamesTab[]=new String[128];

  static  String opcPrivExtNamesTab[]=new String[128];

  static  void defineNonPriv(int opc, String mnem) {

        mnemocodes.put(opcExtNamesTab[opc]=mnem, new Integer(opc_nonpriv*256+opc));

  }

  static  void definePriv(int opc, String mnem) {

        mnemocodes.put(opcPrivExtNamesTab[opc]="priv_"+mnem, new Integer(opc_priv*256+opc));

  }

  static  void defineExt(int opc, String mnem) {

        defineNonPriv(opc, mnem);

        definePriv(opc, mnem);

  }

  static { int k;

        for (k=0; k<opc_wide; k++) {

                mnemocodes.put(opcNamesTab[k], new Integer(k));

        }

        for (k=opc_wide+1; k<opcNamesTab.length; k++) {

                mnemocodes.put(opcNamesTab[k], new Integer(k));

        }

        mnemocodes.put("invokenonvirtual", new Integer(opc_invokespecial));

        mnemocodes.put("iload_w", new Integer(opc_iload_w));

        mnemocodes.put("lload_w", new Integer(opc_lload_w));

        mnemocodes.put("fload_w", new Integer(opc_fload_w));

        mnemocodes.put("dload_w", new Integer(opc_dload_w));

        mnemocodes.put("aload_w", new Integer(opc_aload_w));

        mnemocodes.put("istore_w", new Integer(opc_istore_w));

        mnemocodes.put("lstore_w", new Integer(opc_lstore_w));

        mnemocodes.put("fstore_w", new Integer(opc_fstore_w));

        mnemocodes.put("dstore_w", new Integer(opc_dstore_w));

        mnemocodes.put("astore_w", new Integer(opc_astore_w));

        mnemocodes.put("ret_w", new Integer(opc_ret_w));

        mnemocodes.put("iinc_w", new Integer(opc_iinc_w));

        mnemocodes.put("nonpriv", new Integer(opc_nonpriv));

        mnemocodes.put("priv", new Integer(opc_priv));

        defineExt(0, "load_ubyte");

        defineExt(1, "load_byte");

        defineExt(2, "load_char");

        defineExt(3, "load_short");

        defineExt(4, "load_word");

        defineExt(10, "load_char_oe");

        defineExt(11, "load_short_oe");

        defineExt(12, "load_word_oe");

        defineExt(16, "ncload_ubyte");

        defineExt(17, "ncload_byte");

        defineExt(18, "ncload_char");

        defineExt(19, "ncload_short");

        defineExt(20, "ncload_word");

        defineExt(26, "ncload_char_oe");

        defineExt(27, "ncload_short_oe");

        defineExt(28, "ncload_word_oe");

        defineExt(30, "cache_flush");

        defineExt(32, "store_byte");

        defineExt(34, "store_short");

        defineExt(36, "store_word");

        defineExt(42, "store_short_oe");

        defineExt(44, "store_word_oe");

        defineExt(48, "ncstore_byte");

        defineExt(50, "ncstore_short");

        defineExt(52, "ncstore_word");

        defineExt(58, "ncstore_short_oe");

        defineExt(60, "ncstore_word_oe");

        defineExt(62, "zero_line");

        defineNonPriv(5, "ret_from_sub");

        defineNonPriv(63, "enter_sync_method");

        definePriv(5, "ret_from_trap");

        definePriv(6, "read_dcache_tag");

        definePriv(7, "read_dcache_data");

        definePriv(14, "read_icache_tag");

        definePriv(15, "read_icache_data");

        definePriv(22, "powerdown");

        definePriv(23, "read_scache_data");

        definePriv(31, "cache_index_flush");

        definePriv(38, "write_dcache_tag");

        definePriv(39, "write_dcache_data");

        definePriv(46, "write_icache_tag");

        definePriv(47, "write_icache_data");

        definePriv(54, "reset");

        definePriv(55, "write_scache_data");

        for (k=0; k<32; k++) {

                definePriv(k+64, "read_reg_"+k);

        }

        for (k=0; k<32; k++) {

                definePriv(k+96, "write_reg_"+k);

        }

 }

  public static int opcLength(int opc) throws ArrayIndexOutOfBoundsException {

        switch (opc>>8) {

          case 0:

                return opcLengthsTab[opc];

          case opc_wide:

                switch (opc&0xFF) {

                  case opc_aload: case opc_astore:

                  case opc_fload: case opc_fstore:

                  case opc_iload: case opc_istore:

                  case opc_lload: case opc_lstore:

                  case opc_dload: case opc_dstore:

                  case opc_ret:

                        return  4;

                  case opc_iinc:

                        return  6;

                  default:

                        throw new ArrayIndexOutOfBoundsException();

                }

          case opc_nonpriv:

          case opc_priv:

                return 2;

          default:

                throw new ArrayIndexOutOfBoundsException();

        }

  }

  public static String opcName(int opc) {

        try {

                switch (opc>>8) {

                  case 0:

                        return opcNamesTab[opc];

                  case opc_wide: {

                        String mnem=opcNamesTab[opc&0xFF]+"_w";

                        if (mnemocodes.get(mnem) == null)

                                return null; // non-existent opcode

                        return mnem;

                  }

                  case opc_nonpriv:

                        return opcExtNamesTab[opc&0xFF];

                  case opc_priv:

                        return opcPrivExtNamesTab[opc&0xFF];

                  default:

                        return null;

                }

        } catch (ArrayIndexOutOfBoundsException e) {

                switch (opc) {

                  case opc_nonpriv:

                        return "nonpriv";

                  case opc_priv:

                        return "priv";

                  default:

                        return null;

                }

        }

  }

  public static int opcode(String mnem) {

        Integer Val=(Integer)(mnemocodes.get(mnem));

        if (Val == null) return -1;

        return Val.intValue();

  }

    /**

     * Initialized keyword and token Hashtables

     */

  static Vector keywordNames = new Vector(40);

  private static void defineKeywordName(String id, int token) {

        if (token>=keywordNames.size()) {

                keywordNames.setSize(token+1);

        }

        keywordNames.setElementAt(id, token);

  }

  public static String keywordName(int token) {

        if (token==-1) return "EOF";

        if (token>=keywordNames.size()) return null;

        return (String)keywordNames.elementAt(token);

  }

  static {

        defineKeywordName("ident", IDENT);

        defineKeywordName("STRINGVAL", STRINGVAL);

        defineKeywordName("intVal", INTVAL);

        defineKeywordName("longVal", LONGVAL);

        defineKeywordName("floatVal", FLOATVAL);

        defineKeywordName("doubleVal", DOUBLEVAL);

        defineKeywordName("SEMICOLON", SEMICOLON);

        defineKeywordName("COLON", COLON);

        defineKeywordName("LBRACE", LBRACE);

        defineKeywordName("RBRACE", RBRACE);

  }

  static Hashtable keywords = new Hashtable(40);

  public static int keyword(String idValue) {

        Integer Val=(Integer)(keywords.get(idValue));

        if (Val == null) return IDENT;

        return Val.intValue();

  }

  private static void defineKeyword(String id, int token) {

        keywords.put(id, new Integer(token));

        defineKeywordName(id, token);

  }

  static {

        // Modifier keywords

        defineKeyword("private", PRIVATE);

        defineKeyword("public", PUBLIC);

        defineKeyword("protected",      PROTECTED);

        defineKeyword("static", STATIC);

        defineKeyword("transient",      TRANSIENT);

        defineKeyword("synchronized",   SYNCHRONIZED);

        defineKeyword("super",  SUPER);

        defineKeyword("native", NATIVE);

        defineKeyword("abstract",       ABSTRACT);

        defineKeyword("volatile", VOLATILE);

        defineKeyword("final",  FINAL);

        defineKeyword("interface",INTERFACE);

        defineKeyword("synthetic",SYNTHETIC);

        defineKeyword("strict",STRICT);

        // Declaration keywords

        defineKeyword("package",PACKAGE);

        defineKeyword("class",CLASS);

        defineKeyword("extends",EXTENDS);

        defineKeyword("implements",IMPLEMENTS);

        defineKeyword("const",  CONST);

        defineKeyword("throws",THROWS);

        defineKeyword("interface",INTERFACE);

        defineKeyword("Method",METHODREF);

        defineKeyword("Field",FIELDREF);

        defineKeyword("stack",STACK);

        defineKeyword("locals",LOCAL);

        // used in switchtables

        defineKeyword("default",        DEFAULT);

        // used in inner class declarations

        defineKeyword("InnerClass",     INNERCLASS);

        defineKeyword("of",     OF);

        // misc

        defineKeyword("bits",BITS);

        defineKeyword("Infinity",INF);

        defineKeyword("Inf",INF);

        defineKeyword("NaN",NAN);

  }

   /**

     * Define tag table.

     */

  private static Vector tagNames = new Vector(10);

  private static Hashtable Tags = new Hashtable(10);

  static {

        defineTag("Asciz",CONSTANT_UTF8);

        defineTag("int",CONSTANT_INTEGER);

        defineTag("float",CONSTANT_FLOAT);

        defineTag("long",CONSTANT_LONG);

        defineTag("double",CONSTANT_DOUBLE);

        defineTag("class",CONSTANT_CLASS);

        defineTag("String",CONSTANT_STRING);

        defineTag("Field",CONSTANT_FIELD);

        defineTag("Method",CONSTANT_METHOD);

        defineTag("InterfaceMethod",CONSTANT_INTERFACEMETHOD);

        defineTag("NameAndType",CONSTANT_NAMEANDTYPE);

  }

  private static void defineTag(String id, int val) {

        Tags.put(id, new Integer(val));

        if (val>=tagNames.size()) {

                tagNames.setSize(val+1);

        }

        tagNames.setElementAt(id, val);

  }

  public static String tagName(int tag) {

        if (tag>=tagNames.size()) return null;

        return (String)tagNames.elementAt(tag);

  }

  public static int tagValue(String idValue) {

        Integer Val=(Integer)(Tags.get(idValue));

        if (Val == null) return 0;

        return Val.intValue();

  }

   /**

     * Define type table. These types used in "newarray" instruction only.

     */

  private static Vector typeNames = new Vector(10);

  private static Hashtable Types = new Hashtable(10);

  static {

        defineType("int",T_INT);

        defineType("long",T_LONG);

        defineType("float",T_FLOAT);

        defineType("double",T_DOUBLE);

        defineType("class",T_CLASS);

        defineType("boolean",T_BOOLEAN);

        defineType("char",T_CHAR);

        defineType("byte",T_BYTE);

        defineType("short",T_SHORT);

  }

  private static void defineType(String id, int val) {

        Types.put(id, new Integer(val));

        if (val>=typeNames.size()) {

                typeNames.setSize(val+1);

        }

        typeNames.setElementAt(id, val);

  }

  public static int typeValue(String idValue) {

        Integer Val=(Integer)(Types.get(idValue));

        if (Val == null) return -1;

        return Val.intValue();

  }

  public static String typeName(int type) {

        if (type>=typeNames.size()) return null;

        return (String)typeNames.elementAt(type);

  }

   /**

     * Define MapTypes table.

     * These constants used in stackmap tables only.

     */

  private static Vector mapTypeNames = new Vector(10);

  private static Hashtable MapTypes = new Hashtable(10);

  static {

        defineMapType("bogus",             ITEM_Bogus);

        defineMapType("int",               ITEM_Integer);

        defineMapType("float",             ITEM_Float);

        defineMapType("double",            ITEM_Double);

        defineMapType("long",              ITEM_Long);

        defineMapType("null",              ITEM_Null);

        defineMapType("this",              ITEM_InitObject);

        defineMapType("CP",                ITEM_Object);

        defineMapType("uninitialized",     ITEM_NewObject);

  }

  private static void defineMapType(String id, int val) {

        MapTypes.put(id, new Integer(val));

        if (val>=mapTypeNames.size()) {

                mapTypeNames.setSize(val+1);

        }

        mapTypeNames.setElementAt(id, val);

  }

  public static int mapTypeValue(String idValue) {

        Integer Val=(Integer)(MapTypes.get(idValue));

        if (Val == null) return -1;

        return Val.intValue();

  }

  public static String mapTypeName(int type) {

        if (type>=mapTypeNames.size()) return null;

        return (String)mapTypeNames.elementAt(type);

  }

}