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src/hotspot/share/runtime/fieldType.hpp

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   1 /*
   2  * Copyright (c) 1997, 2011, 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.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *


  51 
  52 class FieldType: public AllStatic {
  53  private:
  54   static void skip_optional_size(Symbol* signature, int* index);
  55   static bool is_valid_array_signature(Symbol* signature);
  56  public:
  57 
  58   // Return basic type
  59   static BasicType basic_type(Symbol* signature);
  60 
  61   // Testing
  62   static bool is_array(Symbol* signature) { return signature->utf8_length() > 1 && signature->byte_at(0) == '[' && is_valid_array_signature(signature); }
  63 
  64   static bool is_obj(Symbol* signature) {
  65      int sig_length = signature->utf8_length();
  66      // Must start with 'L' and end with ';'
  67      return (sig_length >= 2 &&
  68              (signature->byte_at(0) == 'L') &&
  69              (signature->byte_at(sig_length - 1) == ';'));
  70   }
  71 
  72   // MVT name mangling, VM derived value type naming Foo->Foo$Value
  73   static bool is_dvt_postfix(Symbol* signature);
  74   static char* dvt_unmangle_vcc(Symbol* signature);
  75 
  76   // Parse field and extract array information. Works for T_ARRAY only.
  77   static BasicType get_array_info(Symbol* signature, FieldArrayInfo& ai, TRAPS);
  78 };
  79 
  80 #endif // SHARE_VM_RUNTIME_FIELDTYPE_HPP
   1 /*
   2  * Copyright (c) 1997, 2018, 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.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *


  51 
  52 class FieldType: public AllStatic {
  53  private:
  54   static void skip_optional_size(Symbol* signature, int* index);
  55   static bool is_valid_array_signature(Symbol* signature);
  56  public:
  57 
  58   // Return basic type
  59   static BasicType basic_type(Symbol* signature);
  60 
  61   // Testing
  62   static bool is_array(Symbol* signature) { return signature->utf8_length() > 1 && signature->byte_at(0) == '[' && is_valid_array_signature(signature); }
  63 
  64   static bool is_obj(Symbol* signature) {
  65      int sig_length = signature->utf8_length();
  66      // Must start with 'L' and end with ';'
  67      return (sig_length >= 2 &&
  68              (signature->byte_at(0) == 'L') &&
  69              (signature->byte_at(sig_length - 1) == ';'));
  70   }




  71 
  72   // Parse field and extract array information. Works for T_ARRAY only.
  73   static BasicType get_array_info(Symbol* signature, FieldArrayInfo& ai, TRAPS);
  74 };
  75 
  76 #endif // SHARE_VM_RUNTIME_FIELDTYPE_HPP
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