--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/ci/ciSymbol.hpp	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,117 @@
+/*
+ * Copyright (c) 1999, 2013, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#ifndef SHARE_VM_CI_CISYMBOL_HPP
+#define SHARE_VM_CI_CISYMBOL_HPP
+
+#include "ci/ciBaseObject.hpp"
+#include "ci/ciObject.hpp"
+#include "ci/ciObjectFactory.hpp"
+#include "classfile/vmSymbols.hpp"
+#include "oops/symbol.hpp"
+
+// ciSymbol
+//
+// This class represents a Symbol* in the HotSpot virtual
+// machine.
+class ciSymbol : public ciBaseObject {
+  Symbol* _symbol;
+
+  CI_PACKAGE_ACCESS
+  // These friends all make direct use of get_symbol:
+  friend class ciEnv;
+  friend class ciInstanceKlass;
+  friend class ciSignature;
+  friend class ciMethod;
+  friend class ciField;
+  friend class ciObjArrayKlass;
+
+private:
+  const vmSymbols::SID _sid;
+  DEBUG_ONLY( bool sid_ok() { return vmSymbols::find_sid(get_symbol()) == _sid; } )
+
+  ciSymbol(Symbol* s);  // normal case, for symbols not mentioned in vmSymbols
+  ciSymbol(Symbol* s, vmSymbols::SID sid);   // for use with vmSymbols
+
+  Symbol* get_symbol() const { return _symbol; }
+
+  const char* type_string() { return "ciSymbol"; }
+
+  void print_impl(outputStream* st);
+
+  // This is public in Symbol* but private here, because the base can move:
+  const jbyte* base();
+
+  // Make a ciSymbol from a C string (implementation).
+  static ciSymbol* make_impl(const char* s);
+
+public:
+  // The enumeration ID from vmSymbols, or vmSymbols::NO_SID if none.
+  vmSymbols::SID sid() const { return _sid; }
+
+  // The text of the symbol as a null-terminated utf8 string.
+  const char* as_utf8();
+  int         utf8_length();
+
+  // The text of the symbol as ascii with all non-printable characters quoted as \u####
+  const char* as_quoted_ascii();
+
+  // Return the i-th utf8 byte, where i < utf8_length
+  int         byte_at(int i);
+
+  // Tests if the symbol starts with the given prefix.
+  bool starts_with(const char* prefix, int len) const;
+
+  // Determines where the symbol contains the given substring.
+  int index_of_at(int i, const char* str, int len) const;
+
+  void print_symbol_on(outputStream* st);
+  void print_symbol() {
+    print_symbol_on(tty);
+  }
+  const char* as_klass_external_name() const;
+
+  // Make a ciSymbol from a C string.
+  // Consider adding to vmSymbols.hpp instead of using this constructor.
+  // (Your code will be less subject to typographical bugs.)
+  static ciSymbol* make(const char* s);
+
+#define CI_SYMBOL_DECLARE(name, ignore_def) \
+  static ciSymbol* name() { return ciObjectFactory::vm_symbol_at(vmSymbols::VM_SYMBOL_ENUM_NAME(name)); }
+  VM_SYMBOLS_DO(CI_SYMBOL_DECLARE, CI_SYMBOL_DECLARE)
+#undef CI_SYMBOL_DECLARE
+
+  void print() {
+    _symbol->print();
+  }
+
+  virtual bool is_symbol() const       { return true; }
+
+  // Are two ciSymbols equal?
+  bool equals(ciSymbol* obj) { return this->_symbol == obj->get_symbol(); }
+
+  bool is_signature_polymorphic_name() const;
+};
+
+#endif // SHARE_VM_CI_CISYMBOL_HPP