vm/ci/ciSymbol.hpp

	ciSymbol.hpp revision 1427
0N/A/*
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1472N/A * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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0N/A
1879N/A// ciSymbol
1879N/A//
1879N/A// This class represents a symbolOop in the HotSpot virtual
1879N/A// machine.
1879N/Aclass ciSymbol : public ciObject {
1879N/A  CI_PACKAGE_ACCESS
1879N/A  // These friends all make direct use of get_symbolOop:
1879N/A  friend class ciEnv;
1879N/A  friend class ciInstanceKlass;
1879N/A  friend class ciSignature;
1879N/A  friend class ciMethod;
1879N/A  friend class ciObjArrayKlass;
1879N/A
1879N/Aprivate:
1879N/A  const vmSymbols::SID _sid;
1879N/A  DEBUG_ONLY( bool sid_ok() { return vmSymbols::find_sid(get_symbolOop()) == _sid; } )
1879N/A
1879N/A  ciSymbol(symbolOop s);  // normal case, for symbols not mentioned in vmSymbols
0N/A  ciSymbol(symbolHandle s, vmSymbols::SID sid);   // for use with vmSymbolHandles
0N/A
0N/A  symbolOop get_symbolOop() const { return (symbolOop)get_oop(); }
0N/A
0N/A  const char* type_string() { return "ciSymbol"; }
0N/A
0N/A  void print_impl(outputStream* st);
0N/A
0N/A  // This is public in symbolOop but private here, because the base can move:
0N/A  jbyte*      base();
0N/A
0N/A  // Make a ciSymbol from a C string (implementation).
0N/A  static ciSymbol* make_impl(const char* s);
1988N/A
1988N/Apublic:
0N/A  // The enumeration ID from vmSymbols, or vmSymbols::NO_SID if none.
1988N/A  vmSymbols::SID sid() const { return _sid; }
0N/A
0N/A  // The text of the symbol as a null-terminated utf8 string.
0N/A  const char* as_utf8();
0N/A  int         utf8_length();
1879N/A
1879N/A  // 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;

  // What kind of ciObject is this?
  bool is_symbol() { return true; }

  void print_symbol_on(outputStream* st);
  void print_symbol() {
    print_symbol_on(tty);
  }

  // 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
};