diff options
author | William S Fulton <wsf@fultondesigns.co.uk> | 2022-08-01 23:49:14 +0100 |
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committer | William S Fulton <wsf@fultondesigns.co.uk> | 2022-08-02 00:00:54 +0100 |
commit | 2ccc9bd0607664ff1b86b65be4c797eeb69fcc00 (patch) | |
tree | 2cdb48386bf64c913334b4df65662ca0c9becac9 /Lib/octave | |
parent | 1730e4126e4283d3fd42cc4cd4710eec1919b3f5 (diff) | |
download | swig-2ccc9bd0607664ff1b86b65be4c797eeb69fcc00.tar.gz |
Add Octave support for std::unique_ptr and std::auto_ptr
Equivalent to Ruby/Python implementations.
Diffstat (limited to 'Lib/octave')
-rw-r--r-- | Lib/octave/octrun.swg | 57 | ||||
-rw-r--r-- | Lib/octave/std_auto_ptr.i | 33 | ||||
-rw-r--r-- | Lib/octave/std_unique_ptr.i | 33 |
3 files changed, 105 insertions, 18 deletions
diff --git a/Lib/octave/octrun.swg b/Lib/octave/octrun.swg index d94056c8c..71a907f9b 100644 --- a/Lib/octave/octrun.swg +++ b/Lib/octave/octrun.swg @@ -232,7 +232,7 @@ SWIGRUNTIME void swig_acquire_ownership_obj(void *vptr, int own); const swig_type_info *construct_type; // type of special type object std::vector < type_ptr_pair > types; // our c++ base classes - int own; // whether we call c++ destructors when we die + int thisown; // whether we call c++ destructors when we die typedef std::pair < const swig_octave_member *, octave_value > member_value_pair; typedef std::map < std::string, member_value_pair > member_map; @@ -412,7 +412,7 @@ SWIGRUNTIME void swig_acquire_ownership_obj(void *vptr, int own); octave_swig_type(void *_ptr = 0, const swig_type_info *_type = 0, int _own = 0, bool _always_static = false) - : module(0), construct_type(_ptr ? 0 : _type), own(_own), + : module(0), construct_type(_ptr ? 0 : _type), thisown(_own), always_static(_always_static) { if (_type || _ptr) types.push_back(std::make_pair(_type, _ptr)); @@ -426,7 +426,7 @@ SWIGRUNTIME void swig_acquire_ownership_obj(void *vptr, int own); } ~octave_swig_type() { - if (own) { + if (thisown) { ++count; for (unsigned int j = 0; j < types.size(); ++j) { if (!types[j].first || !types[j].first->clientdata) @@ -559,7 +559,7 @@ SWIGRUNTIME void swig_acquire_ownership_obj(void *vptr, int own); } void merge(octave_swig_type &rhs) { - rhs.own = 0; + rhs.thisown = 0; for (unsigned int j = 0; j < rhs.types.size(); ++j) { assert(!rhs.types[j].second.destroyed); #ifdef SWIG_DIRECTORS @@ -582,35 +582,56 @@ SWIGRUNTIME void swig_acquire_ownership_obj(void *vptr, int own); swig_member_const_iterator swig_members_begin() { return members.begin(); } swig_member_const_iterator swig_members_end() { return members.end(); } - int cast(void **vptr, swig_type_info *type, int *_own, int flags) { + int cast(void **vptr, swig_type_info *type, int *own, int flags) { int res = SWIG_ERROR; - if (_own) - *_own = own; - if (flags &SWIG_POINTER_DISOWN) - own = 0; + int clear_pointer = 0; + + if (own) + *own = 0; + if (((flags & SWIG_POINTER_RELEASE) == SWIG_POINTER_RELEASE) && !thisown) { + return SWIG_ERROR_RELEASE_NOT_OWNED; + } else { + if (own) + *own = *own | thisown; + if (flags & SWIG_POINTER_DISOWN) { + thisown = 0; + } + if (flags & SWIG_POINTER_CLEAR) { + clear_pointer = 1; + } + } + if (!type && types.size()) { - if(vptr) + if (vptr) { *vptr = types[0].second.ptr; + if (clear_pointer) + types[0].second.ptr = 0; + } return SWIG_OK; } for (unsigned int j = 0; j < types.size(); ++j) if (type == types[j].first) { - if(vptr) + if (vptr) { *vptr = types[j].second.ptr; + if (clear_pointer) + types[j].second.ptr = 0; + } return SWIG_OK; } for (unsigned int j = 0; j < types.size(); ++j) { swig_cast_info *tc = SWIG_TypeCheck(types[j].first->name, type); if (!tc) continue; - if(vptr) { + if (vptr) { int newmemory = 0; *vptr = SWIG_TypeCast(tc, types[j].second.ptr, &newmemory); - if (newmemory == SWIG_CAST_NEW_MEMORY) { - assert(_own); /* badly formed typemap which will lead to a memory leak - it must set and use own to delete *ptr */ - if (_own) - *_own = *_own | SWIG_CAST_NEW_MEMORY; - } + if (newmemory == SWIG_CAST_NEW_MEMORY) { + assert(own); /* badly formed typemap which will lead to a memory leak - it must set and use own to delete *ptr */ + if (own) + *own = *own | SWIG_CAST_NEW_MEMORY; + } + if (clear_pointer) + types[j].second.ptr = 0; } res = SWIG_OK; break; @@ -619,7 +640,7 @@ SWIGRUNTIME void swig_acquire_ownership_obj(void *vptr, int own); } bool is_owned() const { - return own; + return thisown; } #ifdef SWIG_DIRECTORS diff --git a/Lib/octave/std_auto_ptr.i b/Lib/octave/std_auto_ptr.i new file mode 100644 index 000000000..d062886e4 --- /dev/null +++ b/Lib/octave/std_auto_ptr.i @@ -0,0 +1,33 @@ +/* ----------------------------------------------------------------------------- + * std_auto_ptr.i + * + * SWIG library file for handling std::auto_ptr. + * Memory ownership is passed from the std::auto_ptr C++ layer to the proxy + * class when returning a std::auto_ptr from a function. + * Memory ownership is passed from the proxy class to the std::auto_ptr in the + * C++ layer when passed as a parameter to a wrapped function. + * ----------------------------------------------------------------------------- */ + +%define %auto_ptr(TYPE) +%typemap(in, noblock=1) std::auto_ptr< TYPE > (void *argp = 0, int res = 0) { + res = SWIG_ConvertPtr($input, &argp, $descriptor(TYPE *), SWIG_POINTER_RELEASE | %convertptr_flags); + if (!SWIG_IsOK(res)) { + if (res == SWIG_ERROR_RELEASE_NOT_OWNED) { + %releasenotowned_fail(res, "TYPE *", $symname, $argnum); + } else { + %argument_fail(res, "TYPE *", $symname, $argnum); + } + } + $1.reset((TYPE *)argp); +} + +%typemap (out) std::auto_ptr< TYPE > %{ + %set_output(SWIG_NewPointerObj($1.release(), $descriptor(TYPE *), SWIG_POINTER_OWN | %newpointer_flags)); +%} + +%template() std::auto_ptr< TYPE >; +%enddef + +namespace std { + template <class T> class auto_ptr {}; +} diff --git a/Lib/octave/std_unique_ptr.i b/Lib/octave/std_unique_ptr.i new file mode 100644 index 000000000..1a7ec06fa --- /dev/null +++ b/Lib/octave/std_unique_ptr.i @@ -0,0 +1,33 @@ +/* ----------------------------------------------------------------------------- + * std_unique_ptr.i + * + * SWIG library file for handling std::unique_ptr. + * Memory ownership is passed from the std::unique_ptr C++ layer to the proxy + * class when returning a std::unique_ptr from a function. + * Memory ownership is passed from the proxy class to the std::unique_ptr in the + * C++ layer when passed as a parameter to a wrapped function. + * ----------------------------------------------------------------------------- */ + +%define %unique_ptr(TYPE) +%typemap(in, noblock=1) std::unique_ptr< TYPE > (void *argp = 0, int res = 0) { + res = SWIG_ConvertPtr($input, &argp, $descriptor(TYPE *), SWIG_POINTER_RELEASE | %convertptr_flags); + if (!SWIG_IsOK(res)) { + if (res == SWIG_ERROR_RELEASE_NOT_OWNED) { + %releasenotowned_fail(res, "TYPE *", $symname, $argnum); + } else { + %argument_fail(res, "TYPE *", $symname, $argnum); + } + } + $1.reset((TYPE *)argp); +} + +%typemap (out) std::unique_ptr< TYPE > %{ + %set_output(SWIG_NewPointerObj($1.release(), $descriptor(TYPE *), SWIG_POINTER_OWN | %newpointer_flags)); +%} + +%template() std::unique_ptr< TYPE >; +%enddef + +namespace std { + template <class T> class unique_ptr {}; +} |