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June 26, 2007 Pyd: Stackthreads and returning arrays from D | ||||
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Pyd doesn't work with stackthreads in newers versions of the dmd compiler (1.014+ at least). As I understand from the documentation and my testing, this means I cannot return arrays from D to Python (and renders Pyd quite useless for me). "Pyd uses StackThreads for its iteration wrapping support. By setting this to False, opApply wrapping, Iter, and AltIter will be unavailable." Has anyone found a simple workaround for this? |
June 26, 2007 Re: Pyd: Stackthreads and returning arrays from D | ||||
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Posted in reply to Simen Haugen | Simen Haugen wrote: > Pyd doesn't work with stackthreads in newers versions of the dmd compiler (1.014+ at least). As I understand from the documentation and my testing, this means I cannot return arrays from D to Python (and renders Pyd quite useless for me). > > "Pyd uses StackThreads for its iteration wrapping support. By setting this to False, opApply wrapping, Iter, and AltIter will be unavailable." > > Has anyone found a simple workaround for this? Whether it is a simple workaround or not, the stackthreads work fine with later DMD's in the Fiber reincarnation in Tango. -- Lars Ivar Igesund blog at http://larsivi.net DSource, #d.tango & #D: larsivi Dancing the Tango |
June 26, 2007 Re: Pyd: Stackthreads and returning arrays from D | ||||
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Posted in reply to Simen Haugen | Simen Haugen wrote: > Pyd doesn't work with stackthreads in newers versions of the dmd compiler (1.014+ at least). As I understand from the documentation and my testing, this means I cannot return arrays from D to Python (and renders Pyd quite useless for me). > > "Pyd uses StackThreads for its iteration wrapping support. By setting this to False, opApply wrapping, Iter, and AltIter will be unavailable." > > Has anyone found a simple workaround for this? > > No, StackThreads has nothing to do with arrays. It is strictly for wrapping opApply overloads in classes. Currently, Pyd will convert D arrays to Python lists (except for char[] and wchar[], which are converted to the Python str and unicode types, respectively). Because this is a less-than-optimal solution in a number of ways, I plan on eventually writing a Python type that wraps D arrays more directly. -- Kirk McDonald http://kirkmcdonald.blogspot.com Pyd: Connecting D and Python http://pyd.dsource.org |
June 27, 2007 Re: Pyd: Stackthreads and returning arrays from D | ||||
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Posted in reply to Kirk McDonald | Ok, I just cannot get it to work.. Look at this simple example: import pyd.pyd; class Item { } class Container { private: Item[] _items; public: Item[] items() { return _items; } void items(Item[] items) { _items = items; } } extern(C) void PydMain() { module_init(); wrap_class!(Item); wrap_class!( Container, Property!(Container.items) ); } When trying to compile this I get an error "expected to return a value of type Item[]" for the Container.items property: running build running build_ext building 'test' extension sources: ['test.d', 'python.d', 'class_wrap.d', 'ctor_wrap.d', 'def.d', 'dg_con vert.d', 'exception.d', 'func_wrap.d', 'lib_abstract.d', 'make_object.d', 'make_ wrapper.d', 'op_wrap.d', 'pyd.d', 'pydobject.d', 'struct_wrap.d', 'pydmain.d', ' Default.d', 'Demangle.d', 'Nameof.d', 'Util.d', 'python_dll_windows_boilerplate. d'] c:\d\dmd\bin\dmd.exe -c -version=Python_2_4_Or_Later -version=Python_Unicode_UCS 2 -debug -IC:\Python24\lib\site-packages\celerid\infrastructure\python\2.4 -IC:\ Python24\lib\site-packages\celerid\infrastructure -ofbuild\temp.win32-2.4\Releas e\project\test.obj test.d wrap_class: Item class wrapper : T { mixin OverloadShim; } wrap_class: Container class wrapper : T { mixin OverloadShim; alias Params[0] __pyd_p0; ReturnType!(__pyd_p0.get_t) items() { return __pyd_get_overload!("items", __pyd_p0.get_t).func("items"); } ReturnType!(__pyd_p0.set_t) items(ParameterTypeTuple!(__pyd_p0.set_t) t) { return __pyd_get_overload!("items", __pyd_p0.set_t).func("items", t); } } C:\Python24\lib\site-packages\celerid\infrastructure\pyd\make_object.d(228): fun ction pyd.make_object.d_type!(Item[]).d_type expected to return a value of type Item[] C:\Python24\lib\site-packages\celerid\infrastructure\pyd\make_object.d(289): tem plate instance pyd.make_object.d_type!(Item[]) error instantiating C:\Python24\lib\site-packages\celerid\infrastructure\pyd\func_wrap.d(274): templ ate instance pyd.func_wrap.PydWrappedFunc.fn!(Item[]) error instantiating C:\Python24\lib\site-packages\celerid\infrastructure\pyd\func_wrap.d(264): templ ate instance pyd.func_wrap._pycallable_asdgT!(Item[] delegate(())) error instant iating error: command 'c:\d\dmd\bin\dmd.exe' failed with exit status 1 When I used stackthreads I had no problem returning array of classes. "Kirk McDonald" <kirklin.mcdonald@gmail.com> wrote in message news:f5rsov$apc$1@digitalmars.com... > Simen Haugen wrote: >> Pyd doesn't work with stackthreads in newers versions of the dmd compiler (1.014+ at least). As I understand from the documentation and my testing, this means I cannot return arrays from D to Python (and renders Pyd quite useless for me). >> >> "Pyd uses StackThreads for its iteration wrapping support. By setting this to False, opApply wrapping, Iter, and AltIter will be unavailable." >> >> Has anyone found a simple workaround for this? >> >> > > No, StackThreads has nothing to do with arrays. It is strictly for wrapping opApply overloads in classes. Currently, Pyd will convert D arrays to Python lists (except for char[] and wchar[], which are converted to the Python str and unicode types, respectively). Because this is a less-than-optimal solution in a number of ways, I plan on eventually writing a Python type that wraps D arrays more directly. > > -- > Kirk McDonald > http://kirkmcdonald.blogspot.com > Pyd: Connecting D and Python > http://pyd.dsource.org |
June 27, 2007 Re: Pyd: Stackthreads and returning arrays from D | ||||
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Posted in reply to Simen Haugen | Simen Haugen wrote: > Ok, I just cannot get it to work.. > Look at this simple example: > > import pyd.pyd; > > > class Item { > } > > > class Container { > private: > Item[] _items; > > public: > Item[] items() { > return _items; > } > > void items(Item[] items) { > _items = items; > } Try: Item[] items(Item[] items) { return _items = items; } > } > > > extern(C) void PydMain() { > module_init(); > > wrap_class!(Item); > > wrap_class!( > Container, > Property!(Container.items) > ); > } > > When trying to compile this I get an error "expected to return a value of type Item[]" for the Container.items property: [snip] > When I used stackthreads I had no problem returning array of classes. I think the error message was for the second method (the setter) which *didn't* return an Item[] as was expected. So if I'm correct your only problem with returning an array of classes was forgetting to do so :P (in the setter). |
June 27, 2007 Re: Pyd: Stackthreads and returning arrays from D | ||||
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Posted in reply to Frits van Bommel | Thats not the problem. If I change the test to use a getter method instead, the same error occurs. import pyd.pyd; class Item { } class Container { private: Item[] _items; public: Item[] getItems() { return _items; } } extern(C) void PydMain() { module_init(); wrap_class!(Item); wrap_class!( Container, Def!(Container.getItems) ); } The same error: running build running build_ext building 'test' extension sources: ['test.d', 'python.d', 'class_wrap.d', 'ctor_wrap.d', 'def.d', 'dg_con vert.d', 'exception.d', 'func_wrap.d', 'lib_abstract.d', 'make_object.d', 'make_ wrapper.d', 'op_wrap.d', 'pyd.d', 'pydobject.d', 'struct_wrap.d', 'pydmain.d', ' Default.d', 'Demangle.d', 'Nameof.d', 'Util.d', 'python_dll_windows_boilerplate. d'] c:\d\dmd\bin\dmd.exe -c -version=Python_2_4_Or_Later -version=Python_Unicode_UCS 2 -debug -IC:\Python24\lib\site-packages\celerid\infrastructure\python\2.4 -IC:\ Python24\lib\site-packages\celerid\infrastructure -ofbuild\temp.win32-2.4\Releas e\project\test.obj test.d wrap_class: Item class wrapper : T { mixin OverloadShim; } wrap_class: Container class wrapper : T { mixin OverloadShim; alias Params[0] __pyd_p0; ReturnType!(__pyd_p0.func_t) getItems(ParameterTypeTuple!(__pyd_p0.func_t) t ) { return __pyd_get_overload!("getItems", __pyd_p0.func_t).func("getItems", t); } } C:\Python24\lib\site-packages\celerid\infrastructure\pyd\make_object.d(228): fun ction pyd.make_object.d_type!(Item[]).d_type expected to return a value of type Item[] C:\Python24\lib\site-packages\celerid\infrastructure\pyd\make_object.d(289): tem plate instance pyd.make_object.d_type!(Item[]) error instantiating C:\Python24\lib\site-packages\celerid\infrastructure\pyd\func_wrap.d(274): templ ate instance pyd.func_wrap.PydWrappedFunc.fn!(Item[]) error instantiating C:\Python24\lib\site-packages\celerid\infrastructure\pyd\func_wrap.d(264): templ ate instance pyd.func_wrap._pycallable_asdgT!(Item[] delegate(())) error instant iating error: command 'c:\d\dmd\bin\dmd.exe' failed with exit status 1 "Frits van Bommel" <fvbommel@REMwOVExCAPSs.nl> wrote in message news:f5tar1$2u2p$1@digitalmars.com... > Simen Haugen wrote: >> Ok, I just cannot get it to work.. >> Look at this simple example: >> >> import pyd.pyd; >> >> >> class Item { >> } >> >> >> class Container { >> private: >> Item[] _items; >> >> public: >> Item[] items() { >> return _items; >> } >> >> void items(Item[] items) { >> _items = items; >> } > > Try: > Item[] items(Item[] items) { > return _items = items; > } > >> } >> >> >> extern(C) void PydMain() { >> module_init(); >> >> wrap_class!(Item); >> >> wrap_class!( >> Container, >> Property!(Container.items) >> ); >> } >> >> When trying to compile this I get an error "expected to return a value of type Item[]" for the Container.items property: > [snip] >> When I used stackthreads I had no problem returning array of classes. > > I think the error message was for the second method (the setter) which > *didn't* return an Item[] as was expected. > So if I'm correct your only problem with returning an array of classes was > forgetting to do so :P (in the setter). |
June 27, 2007 Re: Pyd: Stackthreads and returning arrays from D | ||||
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Posted in reply to Simen Haugen | Simen Haugen wrote: > Ok, I just cannot get it to work.. > Look at this simple example: > > import pyd.pyd; > > > class Item { > } > > > class Container { > private: > Item[] _items; > > public: > Item[] items() { > return _items; > } > > void items(Item[] items) { > _items = items; > } > } > > > extern(C) void PydMain() { > module_init(); > > wrap_class!(Item); > > wrap_class!( > Container, > Property!(Container.items) > ); > } > > When trying to compile this I get an error "expected to return a value of type Item[]" for the Container.items property: > [snip] (Man, Pyd has verbose compilation output...) > C:\Python24\lib\site-packages\celerid\infrastructure\pyd\make_object.d(228): fun > ction pyd.make_object.d_type!(Item[]).d_type expected to return a value of type > Item[] > C:\Python24\lib\site-packages\celerid\infrastructure\pyd\make_object.d(289): tem > plate instance pyd.make_object.d_type!(Item[]) error instantiating > C:\Python24\lib\site-packages\celerid\infrastructure\pyd\func_wrap.d(274): templ > ate instance pyd.func_wrap.PydWrappedFunc.fn!(Item[]) error instantiating > C:\Python24\lib\site-packages\celerid\infrastructure\pyd\func_wrap.d(264): templ > ate instance pyd.func_wrap._pycallable_asdgT!(Item[] delegate(())) error instant > iating > error: command 'c:\d\dmd\bin\dmd.exe' failed with exit status 1 > Careful reading of the type conversion docs http://pyd.dsource.org/conversion.html will reveal that, while Pyd is capable of converting D arrays to Python lists, it is currently unable to perform the reverse operation (with the exception of char arrays, of course). This is obviously stupid, and getting Pyd's handling of arrays right has been bumped up on my priority list. (I'll probably set it up so that any Python iterable whose elements can be converted to the proper type can be converted to a D array.) > > When I used stackthreads I had no problem returning array of classes. > > Pyd can easily return an array. It is the reverse operation (wrapping functions with array parameters) which causes problems at the moment. -- Kirk McDonald http://kirkmcdonald.blogspot.com Pyd: Connecting D and Python http://pyd.dsource.org |
June 27, 2007 Re: Pyd: Stackthreads and returning arrays from D | ||||
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Posted in reply to Simen Haugen | Simen Haugen wrote: > Thats not the problem. If I change the test to use a getter method instead, the same error occurs. > > import pyd.pyd; > > class Item { > } > > class Container { > private: > Item[] _items; > > public: > Item[] getItems() { > return _items; > } > } > > extern(C) void PydMain() { > module_init(); > > wrap_class!(Item); > > wrap_class!( > Container, > Def!(Container.getItems) > ); > } > > > The same error: [snip] > C:\Python24\lib\site-packages\celerid\infrastructure\pyd\make_object.d(228): fun > ction pyd.make_object.d_type!(Item[]).d_type expected to return a value of type > Item[] > C:\Python24\lib\site-packages\celerid\infrastructure\pyd\make_object.d(289): tem > plate instance pyd.make_object.d_type!(Item[]) error instantiating > C:\Python24\lib\site-packages\celerid\infrastructure\pyd\func_wrap.d(274): templ > ate instance pyd.func_wrap.PydWrappedFunc.fn!(Item[]) error instantiating > C:\Python24\lib\site-packages\celerid\infrastructure\pyd\func_wrap.d(264): templ > ate instance pyd.func_wrap._pycallable_asdgT!(Item[] delegate(())) error instant > iating > error: command 'c:\d\dmd\bin\dmd.exe' failed with exit status 1 > Now /this/ is strange to me. However, it is extraordinarily late, and I am far too tired to come up with a cognizant answer at the moment. -- Kirk McDonald http://kirkmcdonald.blogspot.com Pyd: Connecting D and Python http://pyd.dsource.org |
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