1 /*
   2  * Copyright (c) 1999, 2015, 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  *
  23  */
  24 
  25 #ifndef SHARE_VM_CI_CISIGNATURE_HPP
  26 #define SHARE_VM_CI_CISIGNATURE_HPP
  27 
  28 #include "ci/ciClassList.hpp"
  29 #include "ci/ciSymbol.hpp"
  30 #include "interpreter/bytecodes.hpp"
  31 #include "utilities/globalDefinitions.hpp"
  32 #include "utilities/growableArray.hpp"
  33 
  34 // ciSignature
  35 //
  36 // This class represents the signature of a method.
  37 class ciSignature : public ResourceObj {
  38 private:
  39   ciSymbol* _symbol;
  40   ciKlass*  _accessing_klass;
  41 
  42   GrowableArray<ciType*>* _types;
  43   int _size;   // number of stack slots required for arguments
  44   int _count;  // number of parameter types in the signature
  45 
  46   friend class ciMethod;
  47   friend class ciBytecodeStream;
  48   friend class ciObjectFactory;
  49 
  50   ciSignature(ciKlass* accessing_klass, const constantPoolHandle& cpool, ciSymbol* signature);
  51   ciSignature(ciKlass* accessing_klass,                           ciSymbol* signature, ciMethodType* method_type);
  52 
  53   void get_all_klasses();
  54 
  55   Symbol* get_symbol() const                     { return _symbol->get_symbol(); }
  56 
  57 public:
  58   ciSymbol* as_symbol() const                    { return _symbol; }
  59   ciKlass*  accessing_klass() const              { return _accessing_klass; }
  60 
  61   ciType*   return_type() const;
  62   ciType*   type_at(int index) const;
  63 
  64   int       size() const                         { return _size; }
  65   int       count() const                        { return _count; }
  66 
  67   int       arg_size_for_bc(Bytecodes::Code bc)  { return size() + (Bytecodes::has_receiver(bc) ? 1 : 0); }
  68 
  69   bool equals(ciSignature* that);
  70 
  71   void print_signature();
  72   void print();
  73 };
  74 
  75 #endif // SHARE_VM_CI_CISIGNATURE_HPP