/*

 * Copyright 1997-2002 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.

 *

 * 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.

 *

 */

// Note: FieldType should be based on the SignatureIterator (or vice versa).

//       In any case, this structure should be re-thought at some point.

// A FieldType is used to determine the type of a field from a signature string.

class FieldType: public AllStatic {

 private:

  static void skip_optional_size(symbolOop signature, int* index);

  static bool is_valid_array_signature(symbolOop signature);

 public:

  // Return basic type

  static BasicType basic_type(symbolOop signature);

  // Testing

  static bool is_array(symbolOop signature) { return signature->utf8_length() > 1 && signature->byte_at(0) == '[' && is_valid_array_signature(signature); }

  static bool is_obj(symbolOop signature) {

     int sig_length = signature->utf8_length();

     // Must start with 'L' and end with ';'

     return (sig_length >= 2 &&

             (signature->byte_at(0) == 'L') &&

             (signature->byte_at(sig_length - 1) == ';'));

  }

  // Parse field and extract array information. Works for T_ARRAY only.

  static BasicType get_array_info(symbolOop signature, jint* dimension, symbolOop *object_key, TRAPS);

};