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|
// @ (#) $Id$
// Copyright 1994-1995 by Sun Microsystems Inc.
// All Rights Reserved
//
// ORB: Implementation of CORBA_Any
//
// This includes three constructors, a destructor, and a "replace"
// method for the "Any" data type. "Any" values pair a pointer to a
// data structure in the native binary representation (e.g. C struct)
// with a TypeCode that describes that data structure.
//
// The copy constructor and the destructor each use the TypeCode
// interpreter with specialized "visit" callback routines. The
// "visit" routines are used respectively to make "deep copies" and
// perform "deep frees" of the aritrary values as described by the
// "Any" value's typecode.
//
// Note that these "visit" routines are called directly, and they
// choose whether or not to use the TypeCode interpreter to examine
// constituents. In the simple cases, the "visit" routines can do
// their work without any further calls; only for constructed types is
// the interpreter's knowledge really required.
//
// THREADING NOTE: "Any" is a data structure which must be protected
// by external critical sections. Like simpler numeric types, "Any"
// instances are accessed and modified atomically. This
// implementation is reentrant, so that independent "Any" values may
// be manipulated concurrently when the underlying programming
// environment is itself reentrant.
//
#include "tao/Any.h"
#include "tao/Typecode.h"
#include "tao/Marshal.h"
#include "tao/ORB_Core.h"
#include "tao/Object.h"
#if !defined (__ACE_INLINE__)
# include "tao/Any.i"
#endif /* ! __ACE_INLINE__ */
ACE_RCSID(tao, Any, "$Id$")
CORBA::TypeCode_ptr
CORBA_Any::type (void) const
{
return CORBA::TypeCode::_duplicate (this->type_);
}
// Will replace if the typecode arg is an alias for the existing one -
// otherwise raises an exception.
void
CORBA_Any::type (CORBA::TypeCode_ptr tc,
CORBA::Environment &env)
{
if (this->type_->equivalent (tc, env))
{
CORBA::release (this->type_);
this->type_ = CORBA::TypeCode::_duplicate (tc);
}
else
env.exception (new CORBA::BAD_TYPECODE ());
}
// TAO doesn't give any guarantees if the value returned by value can
// be cast to the desired type. This is a deprecated routine and its
// use must be avoided. Use the >>= operators.
const void *
CORBA_Any::value (void) const
{
return this->value_;
}
// Default "Any" constructor -- initializes to nulls per the
// OMG C++ mapping.
// NOTE: null (zero) typecode pointers are also treated as the null
// typecode ...
CORBA_Any::CORBA_Any (void)
: type_ (CORBA::TypeCode::_duplicate (CORBA::_tc_null)),
value_ (0),
cdr_ (0),
any_owns_data_ (0)
{
}
// The more common "Any" constructor has its own copy of a typecode,
// and either holds or "consumes" an arbitrary data value satisfying
// the normal binary interface rules.
CORBA_Any::CORBA_Any (CORBA::TypeCode_ptr tc,
void *value,
CORBA::Boolean any_owns_data)
: type_ (CORBA::TypeCode::_duplicate (tc)),
value_ (value),
cdr_ (0),
any_owns_data_ (any_owns_data)
{
if (this->value_ != 0)
{
CORBA::Environment env;
TAO_OutputCDR stream;
// Encode the value.
stream.encode (this->type_,
this->value_,
0,
env);
// Retrieve the start of the message block chain and save it.
this->cdr_ = stream.begin ()->clone ();
}
}
// Constructor using a message block.
CORBA_Any::CORBA_Any (CORBA::TypeCode_ptr type,
CORBA::UShort,
const ACE_Message_Block* mb)
: type_ (CORBA::TypeCode::_duplicate (type)),
value_ (0),
cdr_ (ACE_Message_Block::duplicate (mb)),
any_owns_data_ (0)
{
}
// Copy constructor for "Any".
CORBA_Any::CORBA_Any (const CORBA_Any &src)
: value_ (0),
cdr_ (0),
any_owns_data_ (0)
{
if (src.type_ != 0)
this->type_ =
CORBA::TypeCode::_duplicate (src.type_);
else
this->type_ =
CORBA::TypeCode::_duplicate (CORBA::_tc_null);
CORBA::Environment env;
// CDR stream always contains encoded object, if any holds anything
// at all.
this->cdr_ = ACE_Message_Block::duplicate (src.cdr_);
// No need to copy src's value_. We can always get that from cdr.
}
// assignment operator
CORBA_Any &
CORBA_Any::operator= (const CORBA_Any &src)
{
CORBA::Environment env;
// check if it is a self assignment
if (this == &src)
return *this;
// Decrement the refcount on the Message_Block we hold, it does not
// matter if we own the data or not, because we always own the
// message block (i.e. it is always cloned or duplicated.
ACE_Message_Block::release ((ACE_Message_Block *) this->cdr_);
this->cdr_ = 0;
// If we own any previous data, deallocate it.
this->free_value (env);
if (this->type_ != 0)
CORBA::release (this->type_);
// Now copy the contents of the source to ourselves.
if (src.type_ != 0)
this->type_ =
CORBA::TypeCode::_duplicate (src.type_);
else
this->type_ =
CORBA::TypeCode::_duplicate (CORBA::_tc_null);
this->any_owns_data_ = 0;
this->cdr_ = ACE_Message_Block::duplicate (src.cdr_);
// Simply duplicate the cdr string here. We can save the decode
// operation if there's no need to extract the object.
return *this;
}
// Destructor for an "Any" deep-frees memory if needed.
CORBA_Any::~CORBA_Any (void)
{
// decrement the refcount on the Message_Block we hold, it does not
// matter if we own the data or not, because we always own the
// message block (i.e. it is always cloned or duplicated.
ACE_Message_Block::release (this->cdr_);
this->cdr_ = 0;
CORBA::Environment env;
this->free_value (env);
if (this->type_)
CORBA::release (this->type_);
}
// All-at-once replacement of the contents of an "Any."
void
CORBA_Any::replace (CORBA::TypeCode_ptr tc,
const void *value,
CORBA::Boolean any_owns_data,
CORBA::Environment &ACE_TRY_ENV)
{
// Decrement the refcount on the Message_Block we hold, it does not
// matter if we own the data or not, because we always own the
// message block (i.e. it is always cloned or duplicated).
ACE_Message_Block::release (this->cdr_);
this->cdr_ = 0;
this->free_value (ACE_TRY_ENV);
ACE_CHECK;
// Duplicate tc and then release this->type_, just in case tc and
// type_ are the same thing.
CORBA::TypeCode_ptr tmp =
CORBA::TypeCode::_duplicate (tc);
CORBA::release (this->type_);
this->type_ = tmp;
// @@ NW: I think an Any should alway owns the CDR stream, so I removed the
// check here.
// if the Any owns the data, we encode the "value" into a CDR stream
// and store it. We also destroy the "value" since we own it.
TAO_OutputCDR stream;
stream.encode (tc,
value,
0,
ACE_TRY_ENV);
ACE_CHECK;
this->value_ = ACE_const_cast (void *, value);
this->any_owns_data_ = any_owns_data;
this->cdr_ = 0;
// Retrieve the start of the message block chain and duplicate it.
this->cdr_ = ACE_Message_Block::duplicate (stream.begin ());
}
void
CORBA_Any::_tao_replace (CORBA::TypeCode_ptr tc,
const ACE_Message_Block *mb,
CORBA::Environment &env)
{
// Decrement the refcount on the Message_Block we hold, it does not
// matter if we own the data or not, because we always own the
// message block (i.e. it is always cloned or duplicated).
ACE_Message_Block::release (this->cdr_);
this->cdr_ = 0;
this->free_value (env);
// Duplicate tc and then release this->type_, just in case tc and
// type_ are the same thing.
CORBA::TypeCode_ptr tmp = CORBA::TypeCode::_duplicate (tc);
CORBA::release (this->type_);
this->type_ = tmp;
this->any_owns_data_ = 0;
this->cdr_ = ACE_Message_Block::duplicate (mb);
// We can save the decode operation if there's no need to extract
// the object.
}
void
CORBA_Any::_tao_replace (CORBA::TypeCode_ptr tc,
const ACE_Message_Block *mb,
CORBA::Boolean any_owns_data,
void* value,
CORBA::Environment &ACE_TRY_ENV)
{
// Decrement the refcount on the Message_Block we hold, it does not
// matter if we own the data or not, because we always own the
// message block (i.e. it is always cloned or duplicated).
ACE_Message_Block::release (this->cdr_);
this->cdr_ = 0;
this->free_value (ACE_TRY_ENV);
ACE_CHECK;
this->value_ = value;
// Duplicate tc and then release this->type_, just in case tc and
// type_ are the same thing.
CORBA::TypeCode_ptr tmp = CORBA::TypeCode::_duplicate (tc);
CORBA::release (this->type_);
this->type_ = tmp;
this->any_owns_data_ = any_owns_data;
this->cdr_ = ACE_Message_Block::duplicate (mb);
// We can save the decode operation if there's no need to extract
// the object.
}
void
CORBA_Any::_tao_replace (CORBA::TypeCode_ptr tc,
CORBA::Boolean any_owns_data,
void* value,
CORBA::Environment &ACE_TRY_ENV)
{
this->free_value (ACE_TRY_ENV);
ACE_CHECK;
this->value_ = value;
// Duplicate tc and then release this->type_, just in case tc and
// type_ are the same thing.
CORBA::TypeCode_ptr tmp = CORBA::TypeCode::_duplicate (tc);
CORBA::release (this->type_);
this->type_ = tmp;
this->any_owns_data_ = any_owns_data;
}
// Free internal data.
void
CORBA_Any::free_value (CORBA::Environment &env)
{
if (this->any_owns_data_ && this->value_ != 0)
{
// This is not exception safe.
DEEP_FREE (this->type_, this->value_, 0, env);
::operator delete (this->value_);
}
this->value_ = 0;
}
// Insertion of typecode.
void
CORBA_Any::operator<<= (CORBA::TypeCode_ptr tc)
{
CORBA::Environment env;
CORBA::TypeCode_ptr *_tao_tc;
ACE_NEW (_tao_tc,
CORBA::TypeCode_ptr);
*_tao_tc = CORBA::TypeCode::_duplicate (tc);
this->replace (CORBA::_tc_TypeCode,
_tao_tc,
1,
env);
}
// Insertion of CORBA object - copying.
void
CORBA::Any::operator<<= (const CORBA::Object_ptr obj)
{
CORBA::Object_ptr objptr =
CORBA::Object::_duplicate (obj);
(*this) <<= &objptr;
}
// Insertion of CORBA object - non-copying.
void
CORBA::Any::operator<<= (CORBA::Object_ptr *objptr)
{
CORBA::Environment env;
CORBA::Object_ptr *_tao_object_ptr;
ACE_NEW (_tao_object_ptr,
CORBA::Object_ptr);
*_tao_object_ptr = *objptr;
this->replace (CORBA::_tc_Object,
_tao_object_ptr,
1,
env);
}
// Insertion of from_string.
void
CORBA_Any::operator<<= (from_string s)
{
// If the inserted string is bounded, we create a typecode.
static CORBA::Long _oc_string [] =
{
// CDR typecode octets
TAO_ENCAP_BYTE_ORDER, // native endian + padding; "tricky"
0 // ... unbounded string to start with
};
CORBA::TypeCode_ptr tc = 0;
if (s.bound_ > 0)
{
// Bounded string.
_oc_string [1] = s.bound_;
ACE_NEW (tc,
CORBA::TypeCode (CORBA::tk_string,
sizeof _oc_string,
(char *) &_oc_string,
1,
sizeof (CORBA::String_var)));
}
else
tc = CORBA::_tc_string; // unbounded.
CORBA::Environment env;
char **tmp;
// Non-copying.
if (s.nocopy_)
{
ACE_NEW(tmp,
char* (s.val_));
}
// Copying.
else
{
ACE_NEW(tmp,
char* (CORBA::string_dup (s.val_)));
}
this->replace (tc,
tmp,
1,
env);
}
// Extraction: these are safe and hence we have to check that the
// typecode of the Any is equal to the one we are trying to extract
// into
CORBA::Boolean
CORBA_Any::operator>>= (CORBA::Short &s) const
{
CORBA::Environment env;
if (this->type_->equivalent (CORBA::_tc_short, env))
{
if (this->any_owns_data_ && this->value_)
{
s = *(CORBA::Short *) this->value_;
return 1;
}
else
{
TAO_InputCDR stream (this->cdr_);
return stream.read_short (s);
}
}
else
return 0;
}
CORBA::Boolean
CORBA_Any::operator>>= (CORBA::UShort &s) const
{
CORBA::Environment env;
if (this->type_->equivalent (CORBA::_tc_ushort, env))
{
if (this->any_owns_data_ && this->value_)
{
s = *(CORBA::UShort *) this->value_;
return 1;
}
else
{
TAO_InputCDR stream (this->cdr_);
return stream.read_ushort (s);
}
}
else
return 0;
}
CORBA::Boolean
CORBA_Any::operator>>= (CORBA::Long &l) const
{
CORBA::Environment env;
if (this->type_->equivalent (CORBA::_tc_long, env))
{
if (this->any_owns_data_ && this->value_)
{
l = *(CORBA::Long *) this->value_;
return 1;
}
else
{
TAO_InputCDR stream (this->cdr_);
return stream.read_long (l);
}
}
else
return 0;
}
CORBA::Boolean
CORBA_Any::operator>>= (CORBA::ULong &l) const
{
CORBA::Environment env;
if (this->type_->equivalent (CORBA::_tc_ulong, env))
{
if (this->any_owns_data_ && this->value_)
{
l = *(CORBA::ULong *) this->value_;
return 1;
}
else
{
TAO_InputCDR stream (this->cdr_);
return stream.read_ulong (l);
}
}
else
return 0;
}
CORBA::Boolean
CORBA_Any::operator>>= (CORBA::LongLong &l) const
{
CORBA::Environment env;
if (this->type_->equivalent (CORBA::_tc_longlong, env))
{
if (this->any_owns_data_ && this->value_)
{
l = *(CORBA::LongLong *) this->value_;
return 1;
}
else
{
TAO_InputCDR stream (this->cdr_);
return stream.read_longlong (l);
}
}
else
return 0;
}
CORBA::Boolean
CORBA_Any::operator>>= (CORBA::ULongLong &l) const
{
CORBA::Environment env;
if (this->type_->equivalent (CORBA::_tc_ulonglong, env))
{
if (this->any_owns_data_ && this->value_)
{
l = *(CORBA::ULongLong *) this->value_;
return 1;
}
else
{
TAO_InputCDR stream (this->cdr_);
return stream.read_ulonglong (l);
}
}
else
return 0;
}
CORBA::Boolean
CORBA_Any::operator>>= (CORBA::Float &f) const
{
CORBA::Environment env;
if (this->type_->equivalent (CORBA::_tc_float, env))
{
if (this->any_owns_data_ && this->value_)
{
f = *(CORBA::Float *) this->value_;
return 1;
}
else
{
TAO_InputCDR stream (this->cdr_);
return stream.read_float (f);
}
}
else
return 0;
}
CORBA::Boolean
CORBA_Any::operator>>= (CORBA::Double &d) const
{
CORBA::Environment env;
if (this->type_->equivalent (CORBA::_tc_double, env))
{
if (this->any_owns_data_ && this->value_)
{
d = *(CORBA::Double *) this->value_;
return 1;
}
else
{
TAO_InputCDR stream (this->cdr_);
return stream.read_double (d);
}
}
else
return 0;
}
CORBA::Boolean
CORBA_Any::operator>>= (CORBA::Any &a) const
{
CORBA::Environment env;
if (this->type_->equivalent (CORBA::_tc_any, env))
{
if (this->any_owns_data_ && this->value_)
{
a = *(CORBA::Any *) this->value_;
return 1;
}
else
{
TAO_InputCDR stream (this->cdr_);
// decode the CDR
return (stream.decode (CORBA::_tc_any, &a, 0, env)
== CORBA::TypeCode::TRAVERSE_CONTINUE) ? 1 : 0;
}
}
else
return 0;
}
CORBA::Boolean
CORBA_Any::operator>>= (char *&s) const
{
CORBA::Environment env;
if (this->type_->equal (CORBA::_tc_string, env))
{
if (this->any_owns_data_ && this->value_)
{
s = *(char **) this->value_;
return 1;
}
else
{
TAO_InputCDR stream (this->cdr_);
if (stream.read_string (s))
{
ACE_const_cast (CORBA_Any *,
this)->any_owns_data_ = 1;
char **tmp;
ACE_NEW_RETURN (tmp,
char *,
0);
*tmp = s;
ACE_const_cast (CORBA_Any *,
this)->value_ = tmp;
return 1;
}
return 0;
}
}
else
return 0;
}
CORBA::Boolean
CORBA_Any::operator>>= (CORBA::TypeCode_ptr &tc) const
{
CORBA::Environment env;
if (this->type_->equivalent (CORBA::_tc_TypeCode, env))
{
if (this->any_owns_data_ && this->value_)
{
tc = *(CORBA::TypeCode_ptr *) this->value_;
return 1;
}
else
{
TAO_InputCDR stream ((ACE_Message_Block *) this->cdr_);
CORBA::Boolean flag =
(stream.decode (CORBA::_tc_TypeCode,
&tc,
0,
env)
== CORBA::TypeCode::TRAVERSE_CONTINUE) ? 1 : 0;
return flag;
}
}
else
return 0;
}
// = extraction into the special types
CORBA::Boolean
CORBA_Any::operator>>= (to_boolean b) const
{
CORBA::Environment env;
if (this->type_->equivalent (CORBA::_tc_boolean, env))
{
if (this->any_owns_data_ && this->value_)
{
b.ref_ = *(CORBA::Boolean *) this->value_;
return 1;
}
else
{
TAO_InputCDR stream ((ACE_Message_Block *) this->cdr_);
return stream.read_boolean (b.ref_);
}
}
else
return 0;
}
CORBA::Boolean
CORBA_Any::operator>>= (to_octet o) const
{
CORBA::Environment env;
if (this->type_->equivalent (CORBA::_tc_octet, env))
{
if (this->any_owns_data_ && this->value_)
{
o.ref_ = *(CORBA::Octet *) this->value_;
return 1;
}
else
{
TAO_InputCDR stream ((ACE_Message_Block *) this->cdr_);
return stream.read_octet (o.ref_);
}
}
else
return 0;
}
CORBA::Boolean
CORBA_Any::operator>>= (to_char c) const
{
CORBA::Environment env;
if (this->type_->equivalent (CORBA::_tc_char, env))
{
if (this->any_owns_data_ && this->value_)
{
c.ref_ = *(CORBA::Char *) this->value_;
return 1;
}
else
{
TAO_InputCDR stream ((ACE_Message_Block *) this->cdr_);
return stream.read_char (c.ref_);
}
}
else
return 0;
}
CORBA::Boolean
CORBA_Any::operator>>= (to_wchar wc) const
{
CORBA::Environment env;
if (this->type_->equivalent (CORBA::_tc_wchar, env))
{
if (this->any_owns_data_ && this->value_)
{
wc.ref_ = *(CORBA::WChar *) this->value_;
return 1;
}
else
{
TAO_InputCDR stream ((ACE_Message_Block *) this->cdr_);
return stream.read_wchar (wc.ref_);
}
}
else
return 0;
}
CORBA::Boolean
CORBA_Any::operator>>= (to_string s) const
{
CORBA::Environment env;
if (this->type_->equivalent (CORBA::_tc_string, env))
{
CORBA::ULong bound = this->type_->length (env);
if (s.bound_ == bound) // bounds are same
{
if (this->any_owns_data_ && this->value_)
{
s.val_ = *(char **) this->value_;
return 1;
}
else
{
TAO_InputCDR stream ((ACE_Message_Block *) this->cdr_);
if (stream.read_string (s.val_))
{
ACE_const_cast (CORBA_Any *,
this)->any_owns_data_ = 1;
return 1;
}
}
}
}
// Otherwise.
return 0;
}
CORBA::Boolean
CORBA_Any::operator>>= (to_object obj) const
{
CORBA::Environment env;
if (this->type_->equivalent (CORBA::_tc_Object, env))
{
if (this->any_owns_data_ && this->value_)
{
obj.ref_ = *(CORBA::Object_ptr *) this->value_;
return 1;
}
else
{
// @@ This uses ORB_Core instance because we need one to
// demarshal objects (to create the right profiles for that
// object), but the Any does not belong to any ORB.
TAO_InputCDR stream (this->cdr_,
ACE_CDR_BYTE_ORDER,
TAO_ORB_Core_instance ());
CORBA::Boolean flag = (stream.decode (CORBA::_tc_Object,
&obj.ref_, 0, env)
== CORBA::TypeCode::TRAVERSE_CONTINUE) ? 1:0;
if (flag)
{
CORBA::Object_ptr *tmp = new CORBA::Object_ptr;
*tmp = obj.ref_;
ACE_const_cast (CORBA_Any *,
this)->value_ = tmp;
return 1;
}
// we own this allocated value
// this->value_ = obj.ref_;
return flag;
}
}
else
return 0;
}
// this is a copying version for unbounded strings Not inline, to
// avoid use in Any.i before definition in ORB.i.
void
CORBA_Any::operator<<= (const char* s)
{
CORBA::Environment env;
char **tmp;
ACE_NEW (tmp,
char * (CORBA::string_dup (s)));
this->replace (CORBA::_tc_string,
tmp,
1,
env);
}
// ----------------------------------------------------------------------
// Any_var type
// ----------------------------------------------------------------------
CORBA::Any_var &
CORBA_Any_var::operator= (CORBA::Any *p)
{
if (this->ptr_ != p)
{
if (this->ptr_ != 0)
delete (this->ptr_);
this->ptr_ = p;
}
return *this;
}
CORBA::Any_var &
CORBA_Any_var::operator= (const CORBA::Any_var& r)
{
// @@ Jeff, if this call can fail then maybe we shouldn't be returning
// Any_var & but instead be making this a "void" function?
CORBA_Any_ptr tmp;
ACE_NEW_RETURN (tmp,
CORBA::Any (*r.ptr_),
*this);
if (this->ptr_ != 0)
delete this->ptr_;
this->ptr_ = tmp;
return *this;
}
// = Debugging method.
// Prints the type and the value of the any value. Dumping is
// supported only for standard data types.
void
CORBA_Any::dump (const CORBA::Any &any_value)
{
CORBA::Environment env;
// Get the type.
CORBA::TypeCode_var type = any_value.type ();
if (type->equal (CORBA::_tc_null, env))
ACE_DEBUG ((LM_DEBUG,
"Null\n"));
else if (type->equal (CORBA::_tc_void, env))
ACE_DEBUG ((LM_DEBUG,
"Void\n"));
else if (type->equal (CORBA::_tc_short, env))
{
CORBA::Short s;
any_value >>= s;
ACE_DEBUG ((LM_DEBUG,
"Short %d\n",
s));
}
else if (type->equal (CORBA::_tc_long, env))
{
CORBA::Long l;
any_value >>= l;
ACE_DEBUG ((LM_DEBUG,
"Long %d\n",
l));
}
else if (type->equal (CORBA::_tc_ushort, env))
{
CORBA::UShort s;
any_value >>= s;
ACE_DEBUG ((LM_DEBUG,
"UShort %d\n",
s));
}
else if (type->equal (CORBA::_tc_ulong, env))
{
CORBA::ULong l;
any_value >>= l;
ACE_DEBUG ((LM_DEBUG,
"ULong %d\n",
l));
}
else if (type->equal (CORBA::_tc_float, env))
{
CORBA::Float f;
any_value >>= f;
ACE_DEBUG ((LM_DEBUG,
"Float %f\n",
f));
}
else if (type->equal (CORBA::_tc_double, env))
{
CORBA::Double d;
any_value >>= d;
ACE_DEBUG ((LM_DEBUG,
"Double %f\n",
d));
}
else if (type->equal (CORBA::_tc_boolean, env))
{
CORBA::Boolean b;
any_value >>= (to_boolean)b;
if (b == 1)
ACE_DEBUG ((LM_DEBUG,
"Boolean TRUE\n"));
else
ACE_DEBUG ((LM_DEBUG,
"Boolean FALSE\n"));
}
else if (type->equal (CORBA::_tc_char, env))
{
CORBA::Char ch;
any_value >>= to_char (ch);
ACE_DEBUG ((LM_DEBUG,
"Char %c\n",
ch));
}
else if (type->equal (CORBA::_tc_string, env))
{
CORBA::String str;
any_value >>= str;
ACE_DEBUG ((LM_DEBUG,
"String %s\n",
str));
}
else
ACE_DEBUG ((LM_DEBUG,
"TCKind %d\n",
type->kind_));
}
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