gmane.comp.programming.swig

Renaming a C++ class and retaining backwardscompatibility

Brian Cole — 2008-08-28T22:58:47

I am renaming a C++ class to better reflect it's actual behavior. However, I need to maintain backwards compatibility for several releases since it is such a widely used class. In C++, this is simple, just add a typedef: typedef OECPUTimer OEStopwatch; In the python wrappers the name change can be easily propagated by the following: %pythoncode %{ OEStopwatch = OECPUTimer %} However, how do I do this in Java? Or better yet, generically inside the SWIG interface file? I've tried the following in the .i files to no success: typedef OECPUTimer OEStopwatch; or %inline %{ typedef OECPUTimer OEStopwatch; %} Is there some fancy rename trick I'm missing? Thanks, Brian ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/

c++ exception and java

Schmilinsky, Remsy — 2008-08-28T17:49:21

------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/_______________________________________________ Swig-user mailing list Swig-user< at >lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/swig-user

%ignoring only a type?

David Piepgrass — 2008-08-28T00:40:42

JAVA_ARRAYSOFCLASSES again

Jean-Yves Lawson — 2008-08-27T15:26:55

Hi, I'm having troubles using the JAVA_ARRAYSOFCLASSES macro with an array of classes declared in c++ like "MyClass** list;". I've read other posts talking about it and succeeded in having simple examples working. However the following configuration does fail: ->My MyClassTest.i file contains -------MyClassTest.i------------ %module MyClassTest %include "typemaps.i" %include "arrays_java.i" %include "various.i" JAVA_ARRAYSOFCLASSES(MyClass) %apply MyClass[] { MyClass** list} %include "MyClassDef.h" ------------------------------ ->MyClassDef.h contains ------MyClassDef.h ----------- MyClass{ public: int i; int j; int foobar(); bool barfoo(); }; class MyClasses{ public: void bar(int i); void foo(); MyClass** list; }; -------------------------------- ->The generated MyClassTest_wrap.cxx is wrong(but compiles) and contains the following code for accessing the MyClass Array: -----MyClassTest_wrap.cxx--------------------- SWIGEXPORT jlongArray JNICALL Java_myPackage_MyClassTestJNI_MyClasses_1list_1get(JNIEnv *jenv, jclass jcls, jlong jarg1, jobject jarg1_) { jlongArray jresult = 0 ; MyClasses *arg1 = (MyClasses*) 0 ; MyClasses **result = 0 ; (void)jenv; (void)jcls; (void)jarg1_; arg1 = *(MyClasses **)&jarg1; result = (MyClass **) ((arg1)->list); *(MyClass ***)&jresult = result; return jresult; } --------------------------------------------------- ->The generated Java wrapper is also wrong(and do not compile) as MyClasses.java contains the following accessor code: ----------------MyClasses.java----------------- public SWIGTYPE_p_p_MyClass[] getList() { return SWIGTYPE_p_p_MyClass.cArrayWrap(MyClassTestJNI.MyClasses_list_get(swigCPtr, this), false); } ---------------------------------------------- I'm using "swig -c++" (1.3.35) under windows with MinGW Do you have any clues why the correct code is not generated when I'm trying to use JAVA_ARRAYSOFCLASSES with an array of classes declared like "MyClass** list"? Many Thanks. ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/

Swig and Ant?

Hendrik Maryns — 2008-08-25T15:42:45

Swig Python/Autocad bindig

Mick Duprez — 2008-08-25T07:57:55

Hi All, I've been trying to wrap the AutoCAD ARX api (ARX is the app's C++ SDK) with some success but am stumped at the moment with what may be a simple problem. The wrapper seems to work with some methods but not others. For instance, I can call a wrapped global function no problem, this was the first test to see if the wrapper was going to work. Now that I've wrapped some C++ classes I've hit a snag, I seem to be able to call a simple method from a class but when I try to debug other methods the breakpoints are not getting hit and I receive an error and the method in Python fails. As I have no debugging from Python i can print what the pyobject is to the autocad command line using str(object) and I am indeed getting a pointer to a proxy object, it's functions are just not getting called. The functions are overloaded and swig has produced the code to decide which one to call and I have set bp's at each one and none get hit. Any help greatly appreciated, if you need the solution or for me to post some code (the .i file is quite large but I can post bit's you might need to look at), just let me know. Thanks, Mick. Some set up details - winXP SP2 VS2005 std SP1 Python 2.5.2 SWIG 1.3.36 AutoCAD 2008 SDK

Compilation errors when using Perl 5.8 headers,to upgrade the module from 5.6.1

Thomas Theakanath — 2008-08-21T00:46:48

Segmentation Faults with PHP bindings

Christopher Schwardt — 2008-08-18T10:41:34

Can't find jni files when using packages

Jim — 2008-08-17T15:44:25

I'm trying to figure out how to actually develop java library from c++ code. I've put a couple of simple classes together and done the following: swig -c++ -package com.fay.test -outdir src/com/fay/test -java demo.i gcc -I ${JAVA_HOME}/include -I ${JAVA_HOME}/include/linux -c demo_wrap.cxx ld -G demo_wrap.o -o libdemo.so Which worked fine. My interface looks like: %module book %{ #include "book.h" %} /* Let's just grab the original header file here */ %include "book.h" %module document %{ #include "document.h" %} Book has a reference to the Document class. When I attempt to compile the java files I get: jim< at >chinaberry:~/c++/src/com/fay/test$ javac *.java Document.java:31: cannot find symbol symbol : method delete_Document(long) location: class com.fay.test.bookJNI bookJNI.delete_Document(swigCPtr); ^ Document.java:37: cannot find symbol symbol : method new_Document() location: class com.fay.test.bookJNI this(bookJNI.new_Document(), true); ^ Document.java:41: cannot find symbol symbol : method Document_document_set(long,com.fay.test.Document,long) location: class com.fay.test.bookJNI bookJNI.Document_document_set(swigCPtr, this, SWIGTYPE_p_string.getCPtr(value)); ^ Document.java:45: cannot find symbol symbol : method Document_document_get(long,com.fay.test.Document) location: class com.fay.test.bookJNI return new SWIGTYPE_p_string(bookJNI.Document_document_get(swigCPtr, this), true); That's after I cd'ed to the source directory. The same thing happens if I do: javac src/com/fay/test/*.java So how do I compile? Environment: Ubunty 8.04, java package: sun-java6-jdk , 2.6.24-19 kernel, Thanks, Jim. ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/

C linked list to Python list/iterator

Viktor Hornak — 2008-08-15T22:21:53

boost shared_ptr incorrect deletion problem

Naveen Khanna — 2008-08-15T21:32:57

array parameters and pinning in c#

Antti Karanta — 2008-08-15T06:22:17

Hi! Continuing my adventures w/ c# as the target language, I noticed that there were no typemaps for wrapping arrays (or did I just miss them?). No matter, should be easy enough to do. It seems p/invoke makes a copy of the array being passed, so I thought it would be more efficient to pin a pointer to the array and pass in that. So I did something like this: %typemap(ctype) int *INPUT_ARRAY, int &IN_ARRAY "int*" %typemap(imtype) int *INPUT_ARRAY, int &IN_ARRAY "IntPtr" %typemap(cstype) int *INPUT_ARRAY, int &IN_ARRAY "int[]" %typemap(csin, pre= " Debug.Assert( $csinput != null && $csinput.Length > 0 ) ;\n" " fixed ( int* csArrPtr$csinput = $csinput ) {\n", post="} // end fixed csArrPtr$csinput") int *INPUT_NARRAY, int &IN_NARRAY "(IntPtr)csArrPtr$csinput" %typemap(in) int *INPUT_ARRAY, int &INPUT_ARRAY "$1 = $input ;" %typemap(freearg) int *INPUT_ARRAY, int &INPUT_ARRAY "" %typemap(argout) int *INPUT_ARRAY, int &INPUT_ARRAY "" There is a slight problem, though - post attribute of csin typemap doesn't seem to be the right place for closing the scope of the fixed statement. The stuff there gets inserted into the finally block after the imcall and obviously closes that block. In some cases it doesn't matter, in some it does. So, has anybody figured out how to pass pinned arrays in c# using swig? ::Antti:: ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/

illegal Cast to array type

Terence Kim — 2008-08-14T18:42:14

Is code generated by SWIG is portable?

Alexandre Hamez — 2008-08-13T11:26:07

Hello, I would like to know if the code generated by SWIG is portable? In other words, can I package a software with some code already generated by SWIG and expect it to be compiled everywhere? Thanks! --------------------- Alexandre Hamez alexandre.hamez< at >gmail.com ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/

64-bit Segmentation Fault with Swig 1.3.36

Brian Bird — 2008-08-13T11:08:41

[swigwin] Swigwin does it support callback functions?

Steven Crypter — 2008-08-13T06:37:16

Hey, I'm a newbie in SWIG, maybe my previous question was not written clear, that's why I ask you (again, with proper information what I need). Is swig capable of having callback functions and capable of embedding a script interpreter? I think about registering a C/C++ function, calling the script and the script is still able to use this registered function. THANK you for helping me, every hint, help is appreciated. thanks p0ly PS: I tried to find it using google but unfortunately there was not a result or I simply used the wrong expression. ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/

swigwin 1.3.36 weirdness?

Dennis Sacks — 2008-08-12T23:14:42

Error in generated python wrapper code for statictemplate member function

Naveen Khanna — 2008-08-12T15:33:13

flite C wrapper for C#

Mauricio Henriquez — 2008-08-12T13:12:13

Hi: this is my first post to the list, so first to all hi to everyone and let me congratulate you for such a great project it help a lot with the difficult and tedious task of make wrappers.... Right now I'm trying to make a simple wrapper for c# of the C API of flite tts engine, so I use something like this to generate the wrapper: swig -csharp -namespace TTS -module flite flite.h The command above generate me the correct C# files and a flite_wrap.c C code file, I create a shared lib from flite_wrap.c like linflitewrap.so.1.0.1 and I was able to call from a C# program to the simple flite "init"function, the declaration of that function in the flite.h interfaces is like: int flite_init();, the flite_wrap.c generated file make a definition of that function like: SWIGEXPORT int SWIGSTDCALL CSharp_flite_init() { ... result = (int)flite_init(); ... And I'm able to call the function from my mono C# code like: TTS.flite.flite_init(); , so far all good, but currently my problem is with this originally function from flite.h: float flite_text_to_speech(const char *text, cst_voice *voice, const char *outtype); As you can see, I need the cst_voice type, so SWIG make this for that function (flite_wrap.c): SWIGEXPORT float SWIGSTDCALL CSharp_flite_text_to_speech(char * jarg1, void * jarg2, char * jarg3) { float jresult ; char *arg1 = (char *) 0 ; cst_voice *arg2 = (cst_voice *) 0 ; char *arg3 = (char *) 0 ; float result; arg1 = (char *)jarg1; arg2 = (cst_voice *)jarg2; arg3 = (char *)jarg3; result = (float)flite_text_to_speech((char const *)arg1,arg2,(char const *)arg3); jresult = result; return jresult;} wich seems to be ok, but in the C# code SWIG make this for the cst_voice type: public class SWIGTYPE_p_cst_voice { private HandleRef swigCPtr; internal SWIGTYPE_p_cst_voice(IntPtr cPtr, bool futureUse) { swigCPtr = new HandleRef(this, cPtr); } protected SWIGTYPE_p_cst_voice() { swigCPtr = new HandleRef(null, IntPtr.Zero); } internal static HandleRef getCPtr(SWIGTYPE_p_cst_voice obj) { return (obj == null) ? new HandleRef(null, IntPtr.Zero) : obj.swigCPtr; } } ..and here begin my problems, because I can't call to any constructor of this type, this type is originally used in C like: flite_init(); cst_voice *register_cmu_us_kal(); cst_voice *v; v = register_cmu_us_kal(); flite_text_to_speech("wellcome professor", v, "play"); So I was trying to do from C# something like: TTS.flite.flite_init(); // --> OK TTS.SWIGTYPE_p_cst_voice v; // here I have my first problem becouse I don't have any public constructor..and even if I change the swig contructor declaration //for this type from protected to public I get a really ugly SIGSEGV error without any useful info. TTS.flite.flite_text_to_speech("wellcome professor", v, "play"); //of course I can't call to this becouse "v" don't exist... Here is the original declaration of cst_voice from cst_voice.h (used by flite.h): struct cst_voice_struct { cst_features *features; cst_features *ffunctions; cst_utterance *(*utt_init)(cst_utterance *u, struct cst_voice_struct *v); }; typedef struct cst_voice_struct cst_voice; cst_voice *new_voice(); void delete_voice(cst_voice *u); So, basically I don't know where to start to look or check to make this wrapper to work, any ideas?, sugestions? Thank you very much Mauricio ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/

handling comples macros

Choonghwan Lee — 2008-08-11T17:45:12

With SWIG, I'm generating Python wrapper for a C library containing complicated preprocessor macros. For example, #define MACRO1 (funccall1(), globalvar) #define MACRO2 (funccall2(), 2 /* literal */) I could see SWIG ignored those macros although globalvar was put inside cvar property. My goal is to access those macros in Python like the following: modulename.MACRO1 modulename.MACRO2 Assuming that globalvar is not modified after the initialization, I think one possible solution is to write some SWIG commands in the interface file. For example, %module modulename %{ %} %init %{ funccall1(); funccall2(); %} #undef MACRO1 %constant int MACRO1 = globalvar; #undef MACRO2 #define MACRO2 2 It worked (at least) for me, but I was wondering if there is any better solution. I don't think is a good solution in that I hardcoded a variable and a literal. Since calling funccall1() and funccall2() several times does not make any problem, I don't think any complicated logic is needed here; the generated Python wrapper can just call funccall1() or funccall2() and then retrieve the variable or the number whenever MACRO1 or MACRO2 is accessed. If this is not supported, I'm wondering if others think this is important or useful feature, and it is worth requesting this feature. Thanks! ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/

catching heap errors in C#

Patrick — 2008-08-11T16:42:01