Enhance SWIGTYPE "out" typemaps to use std::move when copying
objects, thereby making use of move semantics when wrapping a function returning
by value if the returned type supports move semantics.
Wrapping functions that return move only types 'by value' now work out the box
without having to provide custom typemaps.
The implementation removed all casts in the "out" typemaps to allow the compiler to
appropriately choose calling a move constructor, where possible, otherwise a copy
constructor. The implementation alsoand required modifying SwigValueWrapper to
change a cast operator from:
SwigValueWrapper::operator T&() const;
to
#if __cplusplus >=201103L
SwigValueWrapper::operator T&&() const;
#else
SwigValueWrapper::operator T&() const;
#endif
This is not backwards compatible for C++11 and later when using the valuewrapper feature
if a cast is explicitly being made in user supplied "out" typemaps. Suggested change
in custom "out" typemaps for C++11 and later code:
1. Try remove the cast altogether to let the compiler use an appropriate implicit cast.
2. Change the cast, for example, from static_cast<X &> to static_cast<X &&>, using the
__cplusplus macro if all versions of C++ need to be supported.
Issue #999Closes#1044
More about the commit:
Added some missing "varout" typemaps for Ocaml which was falling back to
use "out" typemaps as they were missing.
Ruby std::set fix for SwigValueWrapper C++11 changes.
If a class was given the director feature, it was not possible
to use ctors with multiple parameters.
Add director_default_runme.ml (it is based on
director_default_runme.java).
OCaml's variableWrapper() wasn't calling emit_action_code() for
in/out typemaps, which meant that %allowexception was being ignored.
In addition, remove all comments in the typemaps in Lib/ocaml. In the
case of the allowexcept test, one of the typemap comments caused
compilation to fail because it became nested within another comment
in an %exception block.
Re-enable the allowexcept test.
Add allowexcept_runme.ml.
copy_string() is a macro in the OCaml C API, so rename the function
to copy_str(). Add a runtime test.
The minherit runtime test was fixed by b64d685.
Use the proper syntax for accessing member variables in
unions_runme.ml
std::string::assign(PTR, LEN) rather than assigning
std::string(PTR, LEN). Using assign generates more efficient code
(tested with GCC 4.1.2).
git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk@9936 626c5289-ae23-0410-ae9c-e8d60b6d4f22
makedebugtop: include swig.cmo
Lib: factored out more common code, slightly reorganized class type.
added director define and exceptions.
std_string: length from the original ocaml string (no longer depends on
null termination)
ocamldec.swg/ocaml.swg: added caml_string_len
Examples/Makefile.in: quiet about checking out files.
Ocaml.cxx:
Fixed abstract director test case.
Include/exclude director.swg based on directors being enabled.
Final edits for 1.3.20, barring bugs being discovered.
git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk/SWIG@5477 626c5289-ae23-0410-ae9c-e8d60b6d4f22
I've moved completely away from the "value" type to "caml_value_t". Although
a bit painful, this will make things easier for me. I seem to be seeing
quite a few things that use the word value as a function, type, etc, and
wanted to get something that doesn't collide.
git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk/SWIG@4593 626c5289-ae23-0410-ae9c-e8d60b6d4f22
Type registration. Correct support for casting. Proper type safety.
Changed:
ocaml.swg: Correct casts, declaration order for C
ocamldec.swg: Removed problematic forward declarations without array index.
git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk/SWIG@4573 626c5289-ae23-0410-ae9c-e8d60b6d4f22
mlheading and mliheading: Added C_director_core, which holds the state needed
by the director to disown.
std_string and std_vector: Added specific support for the common case of
a zero-terminated char **.
typemaps.i: Withdraw default argout for SWIGTYPE &
git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk/SWIG@4481 626c5289-ae23-0410-ae9c-e8d60b6d4f22
Strings <=> std::string by value
std::wstring accessible from Ocaml. The string example converts a multibyte
japanese EUC sequence to a single wchar_t sequence if you have the ja_JP.EUC-JP
locale, or similar.
Better handling of reference in types
Corrected problems with & * mismatch in type verifier.
Type verifier now really functional. No more type errors in places they
wouldn't be allowed in C++, unless you work at it.
Added argout_ref example for argout_ref.
Init code now effective (called from let _ = f_<module>_init ())
git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk/SWIG@4412 626c5289-ae23-0410-ae9c-e8d60b6d4f22
