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// -*- C++ -*-
//=============================================================================
/**
* @file CDR_Size.h
*
* ACE Common Data Representation (CDR) size-calculating stream.
*
* The current implementation assumes that the host has 1-byte,
* 2-byte and 4-byte integral types, and that it has single
* precision and double precision IEEE floats.
* Those assumptions are pretty good these days, with Crays being
* the only known exception.
*
* @author Boris Kolpackov <boris@kolpackov.net>
*/
//=============================================================================
#ifndef ACE_CDR_SIZE_H
#define ACE_CDR_SIZE_H
#include /**/ "ace/pre.h"
#include "ace/CDR_Base.h"
#include "ace/CDR_Stream.h" // for ACE_OutputCDR::from_*
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
#include "ace/SStringfwd.h"
ACE_BEGIN_VERSIONED_NAMESPACE_DECL
/**
* @class ACE_SizeCDR
*
* @brief A CDR stream for calculating size of the representation.
*/
class ACE_Export ACE_SizeCDR
{
public:
/// Default constructor.
ACE_SizeCDR (ACE_CDR::Octet major_version = ACE_CDR_GIOP_MAJOR_VERSION,
ACE_CDR::Octet minor_version = ACE_CDR_GIOP_MINOR_VERSION);
/// Returns @c false if an error has occurred.
bool good_bit (void) const;
/// Reset current size.
void reset (void);
/// Return current size.
size_t total_length (void) const;
// Return 0 on failure and 1 on success.
//@{ @name Size-calculating pseudo-write operations
ACE_CDR::Boolean write_boolean (ACE_CDR::Boolean x);
ACE_CDR::Boolean write_char (ACE_CDR::Char x);
ACE_CDR::Boolean write_wchar (ACE_CDR::WChar x);
ACE_CDR::Boolean write_octet (ACE_CDR::Octet x);
ACE_CDR::Boolean write_short (ACE_CDR::Short x);
ACE_CDR::Boolean write_ushort (ACE_CDR::UShort x);
ACE_CDR::Boolean write_long (ACE_CDR::Long x);
ACE_CDR::Boolean write_ulong (ACE_CDR::ULong x);
ACE_CDR::Boolean write_longlong (const ACE_CDR::LongLong &x);
ACE_CDR::Boolean write_ulonglong (const ACE_CDR::ULongLong &x);
ACE_CDR::Boolean write_float (ACE_CDR::Float x);
ACE_CDR::Boolean write_double (const ACE_CDR::Double &x);
ACE_CDR::Boolean write_longdouble (const ACE_CDR::LongDouble &x);
ACE_CDR::Boolean write_fixed (const ACE_CDR::Fixed &x);
/// For string we offer methods that accept a precomputed length.
ACE_CDR::Boolean write_string (const ACE_CDR::Char *x);
ACE_CDR::Boolean write_string (ACE_CDR::ULong len,
const ACE_CDR::Char *x);
ACE_CDR::Boolean write_string (const ACE_CString &x);
ACE_CDR::Boolean write_wstring (const ACE_CDR::WChar *x);
ACE_CDR::Boolean write_wstring (ACE_CDR::ULong length,
const ACE_CDR::WChar *x);
ACE_CDR::Boolean write_string (const std::string &x);
#if !defined(ACE_LACKS_STD_WSTRING)
ACE_CDR::Boolean write_wstring (const std::wstring &x);
#endif
//@}
/// @note the portion written starts at <x> and ends
/// at <x + length>.
/// The length is *NOT* stored into the CDR stream.
//@{ @name Array write operations
ACE_CDR::Boolean write_boolean_array (const ACE_CDR::Boolean *x,
ACE_CDR::ULong length);
ACE_CDR::Boolean write_char_array (const ACE_CDR::Char *x,
ACE_CDR::ULong length);
ACE_CDR::Boolean write_wchar_array (const ACE_CDR::WChar* x,
ACE_CDR::ULong length);
ACE_CDR::Boolean write_octet_array (const ACE_CDR::Octet* x,
ACE_CDR::ULong length);
ACE_CDR::Boolean write_short_array (const ACE_CDR::Short *x,
ACE_CDR::ULong length);
ACE_CDR::Boolean write_ushort_array (const ACE_CDR::UShort *x,
ACE_CDR::ULong length);
ACE_CDR::Boolean write_long_array (const ACE_CDR::Long *x,
ACE_CDR::ULong length);
ACE_CDR::Boolean write_ulong_array (const ACE_CDR::ULong *x,
ACE_CDR::ULong length);
ACE_CDR::Boolean write_longlong_array (const ACE_CDR::LongLong* x,
ACE_CDR::ULong length);
ACE_CDR::Boolean write_ulonglong_array (const ACE_CDR::ULongLong *x,
ACE_CDR::ULong length);
ACE_CDR::Boolean write_float_array (const ACE_CDR::Float *x,
ACE_CDR::ULong length);
ACE_CDR::Boolean write_double_array (const ACE_CDR::Double *x,
ACE_CDR::ULong length);
ACE_CDR::Boolean write_longdouble_array (const ACE_CDR::LongDouble* x,
ACE_CDR::ULong length);
///
/// Adjust to @a size and count @a size octets.
void adjust (size_t size);
/// As above, but now the size and alignment requirements may be
/// different.
void adjust (size_t size,
size_t align);
private:
/// disallow copying...
ACE_SizeCDR (const ACE_SizeCDR& rhs);
ACE_SizeCDR& operator= (const ACE_SizeCDR& rhs);
ACE_CDR::Boolean write_1 (const ACE_CDR::Octet *x);
ACE_CDR::Boolean write_2 (const ACE_CDR::UShort *x);
ACE_CDR::Boolean write_4 (const ACE_CDR::ULong *x);
ACE_CDR::Boolean write_8 (const ACE_CDR::ULongLong *x);
ACE_CDR::Boolean write_16 (const ACE_CDR::LongDouble *x);
/**
* write an array of @a length elements, each of @a size bytes and the
* start aligned at a multiple of <align>. The elements are assumed
* to be packed with the right alignment restrictions. It is mostly
* designed for buffers of the basic types.
*
* This operation uses <memcpy>; as explained above it is expected
* that using assignment is faster that <memcpy> for one element,
* but for several elements <memcpy> should be more efficient, it
* could be interesting to find the break even point and optimize
* for that case, but that would be too platform dependent.
*/
ACE_CDR::Boolean write_array (const void *x,
size_t size,
size_t align,
ACE_CDR::ULong length);
ACE_CDR::Boolean write_wchar_array_i (const ACE_CDR::WChar* x,
ACE_CDR::ULong length);
private:
/// Set to false when an error occurs.
bool good_bit_;
/// Current size.
size_t size_;
protected:
/// GIOP version information
ACE_CDR::Octet major_version_;
ACE_CDR::Octet minor_version_;
};
// @@ This operator should not be inlined since they force SString.h
// to be included in this header.
extern ACE_Export ACE_CDR::Boolean operator<< (ACE_SizeCDR &ss,
const ACE_CString &x);
ACE_END_VERSIONED_NAMESPACE_DECL
#if defined (__ACE_INLINE__)
# include "ace/CDR_Size.inl"
#else /* __ACE_INLINE__ */
ACE_BEGIN_VERSIONED_NAMESPACE_DECL
// Not used by CORBA or TAO
extern ACE_Export ACE_CDR::Boolean operator<< (ACE_SizeCDR &ss,
ACE_CDR::Char x);
// CDR size-calculating output operators for primitive types
extern ACE_Export ACE_CDR::Boolean operator<< (ACE_SizeCDR &ss,
ACE_CDR::Short x);
extern ACE_Export ACE_CDR::Boolean operator<< (ACE_SizeCDR &ss,
ACE_CDR::UShort x);
extern ACE_Export ACE_CDR::Boolean operator<< (ACE_SizeCDR &ss,
ACE_CDR::Long x);
extern ACE_Export ACE_CDR::Boolean operator<< (ACE_SizeCDR &ss,
ACE_CDR::ULong x);
extern ACE_Export ACE_CDR::Boolean operator<< (ACE_SizeCDR &ss,
ACE_CDR::LongLong x);
extern ACE_Export ACE_CDR::Boolean operator<< (ACE_SizeCDR &ss,
ACE_CDR::ULongLong x);
extern ACE_Export ACE_CDR::Boolean operator<< (ACE_SizeCDR& ss,
ACE_CDR::LongDouble x);
extern ACE_Export ACE_CDR::Boolean operator<< (ACE_SizeCDR &ss,
ACE_CDR::Float x);
extern ACE_Export ACE_CDR::Boolean operator<< (ACE_SizeCDR &ss,
ACE_CDR::Double x);
extern ACE_Export ACE_CDR::Boolean operator<< (ACE_SizeCDR &ss,
const ACE_CDR::Fixed &x);
// CDR size-calculating output operator from helper classes
extern ACE_Export ACE_CDR::Boolean operator<< (ACE_SizeCDR &ss,
ACE_OutputCDR::from_boolean x);
extern ACE_Export ACE_CDR::Boolean operator<< (ACE_SizeCDR &ss,
ACE_OutputCDR::from_char x);
extern ACE_Export ACE_CDR::Boolean operator<< (ACE_SizeCDR &ss,
ACE_OutputCDR::from_wchar x);
extern ACE_Export ACE_CDR::Boolean operator<< (ACE_SizeCDR &ss,
ACE_OutputCDR::from_octet x);
extern ACE_Export ACE_CDR::Boolean operator<< (ACE_SizeCDR &ss,
ACE_OutputCDR::from_string x);
extern ACE_Export ACE_CDR::Boolean operator<< (ACE_SizeCDR &ss,
ACE_OutputCDR::from_wstring x);
extern ACE_Export ACE_CDR::Boolean operator<< (ACE_SizeCDR &ss,
const ACE_CDR::Char* x);
extern ACE_Export ACE_CDR::Boolean operator<< (ACE_SizeCDR &ss,
const ACE_CDR::WChar* x);
extern ACE_Export ACE_CDR::Boolean operator<< (ACE_SizeCDR &ss,
const std::string& x);
#if !defined(ACE_LACKS_STD_WSTRING)
extern ACE_Export ACE_CDR::Boolean operator<< (ACE_SizeCDR &ss,
const std::wstring& x);
#endif
ACE_END_VERSIONED_NAMESPACE_DECL
#endif /* __ACE_INLINE__ */
#include /**/ "ace/post.h"
#endif /* ACE_CDR_SIZE_H */
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