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IDL to C++03 RFC
Johnny Willemsen (jwillemsen@remedy.nl)
mars/2013-06-01
Background
IDL to C++ language mapping has been created in
the 90s
• Difficult to use
• Impossible to change
IDL to C++11 language mapping has been adopted
end of 2012
• Easy to use
• State of the art
• C++11 is not required to be used by the application
code
• A compiler supporting C++11 needed for the
mapping
Copyright © 20132
C++11 Compiler status
GCC 4.6 and higher have full support
Clang 3.2 and newer have full support
Other compilers are behind
• Intel C++ in progress
• Embarcadero C++ claims full support but not tested
yet
• Microsoft and IBM have partial support
• HP and Oracle are way behind
Copyright © 20133
Migration to C++11
Users are slowly migrating to C++11. The users that
have migrated are very pleased with it
Lot of projects are tied to using C++03 and will take
several more years to upgrade those
• But they do want to use a modern IDL to C++
language mapping
Copyright © 20134
IDL to C++03
A new IDL to C++03 language mapping
• Start with the IDL to C++11 language mapping
• Remove usage of optional C++11 features
• Replace some C++11 constructs with C++03
constructs
Fills the gap between IDL to C++ and IDL to C++11
Copyright © 20135
The process?
IDL to C++03 can be created in a few ways
• Fork IDL to C++11 and create a complete separate
specification
Easy for users
Hard to maintain
Would this be a RFC?
• Extend IDL to C++11 to support more flavors of C++
Make some text optional for one C++ flavor
Give alternate text
Could this be done as part of a RTF, RFP, or RFC?
Copyright © 20136
For example
The OMG IDL unbounded string type is mapped to std::string.
A bounded string type is mapped to a distinct type to
differentiate from an unbounded string. This distinct type must
deliver std::string semantics and support transparent
conversion from bounded to unbounded and vice versa.
[C++11] This conversion should include support for move
semantics.[C++11]
Copyright © 20137
Next steps
Determine adequate process
Wait until the IDL to C++11 V1.1 has been adopted
Start doing some work!
Copyright © 20138
Contact
Copyright © 20139
Remedy IT
Melkrijder 11
3861 SG Nijkerk (Gld)
The Netherlands
tel.: +31(0)88 053 0000
e-mail: sales@remedy.nl
website: www.remedy.nl
Twitter: @RemedyIT
Slideshare: RemedyIT

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IDL to C++03 RFC

  • 1. IDL to C++03 RFC Johnny Willemsen (jwillemsen@remedy.nl) mars/2013-06-01
  • 2. Background IDL to C++ language mapping has been created in the 90s • Difficult to use • Impossible to change IDL to C++11 language mapping has been adopted end of 2012 • Easy to use • State of the art • C++11 is not required to be used by the application code • A compiler supporting C++11 needed for the mapping Copyright © 20132
  • 3. C++11 Compiler status GCC 4.6 and higher have full support Clang 3.2 and newer have full support Other compilers are behind • Intel C++ in progress • Embarcadero C++ claims full support but not tested yet • Microsoft and IBM have partial support • HP and Oracle are way behind Copyright © 20133
  • 4. Migration to C++11 Users are slowly migrating to C++11. The users that have migrated are very pleased with it Lot of projects are tied to using C++03 and will take several more years to upgrade those • But they do want to use a modern IDL to C++ language mapping Copyright © 20134
  • 5. IDL to C++03 A new IDL to C++03 language mapping • Start with the IDL to C++11 language mapping • Remove usage of optional C++11 features • Replace some C++11 constructs with C++03 constructs Fills the gap between IDL to C++ and IDL to C++11 Copyright © 20135
  • 6. The process? IDL to C++03 can be created in a few ways • Fork IDL to C++11 and create a complete separate specification Easy for users Hard to maintain Would this be a RFC? • Extend IDL to C++11 to support more flavors of C++ Make some text optional for one C++ flavor Give alternate text Could this be done as part of a RTF, RFP, or RFC? Copyright © 20136
  • 7. For example The OMG IDL unbounded string type is mapped to std::string. A bounded string type is mapped to a distinct type to differentiate from an unbounded string. This distinct type must deliver std::string semantics and support transparent conversion from bounded to unbounded and vice versa. [C++11] This conversion should include support for move semantics.[C++11] Copyright © 20137
  • 8. Next steps Determine adequate process Wait until the IDL to C++11 V1.1 has been adopted Start doing some work! Copyright © 20138
  • 9. Contact Copyright © 20139 Remedy IT Melkrijder 11 3861 SG Nijkerk (Gld) The Netherlands tel.: +31(0)88 053 0000 e-mail: sales@remedy.nl website: www.remedy.nl Twitter: @RemedyIT Slideshare: RemedyIT