#--------------------------------------------------------------------------- # Name: etgtools/tweaker_tools.py # Author: Robin Dunn # # Created: 3-Nov-2010 # Copyright: (c) 2010-2018 by Total Control Software # License: wxWindows License #--------------------------------------------------------------------------- """ Some helpers and utility functions that can assist with the tweaker stage of the ETG scripts. """ import etgtools as extractors from .generators import textfile_open import sys, os import copy PY3 = sys.version_info[0] == 3 magicMethods = { 'operator!=' : '__ne__', 'operator==' : '__eq__', 'operator+' : '__add__', 'operator-' : '__sub__', 'operator*' : '__mul__', 'operator/' : '__div__', 'operator+=' : '__iadd__', 'operator-=' : '__isub__', 'operator*=' : '__imul__', 'operator/=' : '__idiv__', 'operator bool' : '__int__', # Why not __nonzero__? # TODO: add more } def removeWxPrefixes(node): """ Rename items with a 'wx' prefix to not have the prefix. If the back-end generator supports auto-renaming then it can ignore the pyName value for those that are changed here. We'll still change them all in case the pyNames are needed elsewhere. """ for item in node.allItems(): if not item.pyName \ and item.name.startswith('wx') \ and not item.name.startswith('wxEVT_') \ and not isinstance(item, (extractors.TypedefDef, extractors.MethodDef )): # TODO: Any others? item.pyName = item.name[2:] item.wxDropped = True if item.name.startswith('wxEVT_') and 'CATEGORY' not in item.name: # give these their actual name so the auto-renamer won't touch them item.pyName = item.name def removeWxPrefix(name): """ Remove the "wx" prefix from a name, except for those which should keep it. """ if name.startswith('wx.') or name.startswith('``wx.'): return name if name.startswith('wx') and not name.startswith('wxEVT_'): name = name[2:] if name.startswith('``wx') and not name.startswith('``wxEVT_'): name = name[0:2] + name[4:] return name class FixWxPrefix(object): """ A mixin class that can help with removing the wx prefix, or changing it in to a "wx.Name" depending on where it is being used from. """ _coreTopLevelNames = None def fixWxPrefix(self, name, checkIsCore=False): # By default remove the wx prefix like normal name = removeWxPrefix(name) if not checkIsCore or self.isCore: return name # Otherwise, if we're not processing the core module currently then check # if the name is local or if it resides in core. If it does then return # the name as 'wx.Name' if FixWxPrefix._coreTopLevelNames is None: self._getCoreTopLevelNames() testName = name if '(' in name: testName = name[:name.find('(')] if testName in FixWxPrefix._coreTopLevelNames: return 'wx.'+name else: return name def _getCoreTopLevelNames(self): # Since the real wx.core module may not exist yet, and since actually # executing code at this point is probably a bad idea, try parsing the # core.pyi file and pulling the top level names from it. import ast def _processItem(item, names): if isinstance(item, ast.Assign): for t in item.targets: _processItem(t, names) elif isinstance(item, ast.Name): names.append(item.id) elif isinstance(item, ast.ClassDef): names.append(item.name) elif isinstance(item, ast.FunctionDef): names.append(item.name) names = list() filename = 'wx/core.pyi' if PY3: with open(filename, 'rt', encoding='utf-8') as f: text = f.read() else: with open(filename, 'r') as f: text = f.read() parseTree = ast.parse(text, filename) for item in parseTree.body: _processItem(item, names) FixWxPrefix._coreTopLevelNames = names def ignoreAssignmentOperators(node): """ Set the ignored flag for all class methods that are assignment operators """ for item in node.allItems(): if isinstance(item, extractors.MethodDef) and item.name == 'operator=': item.ignore() def ignoreAllOperators(node): """ Set the ignored flag for all class methods that are any kind of operator """ for item in node.allItems(): if isinstance(item, extractors.MethodDef) and item.name.startswith('operator'): item.ignore() def ignoreConstOverloads(node): """ If a method is overloaded and one of them only differs by const-ness, then ignore it. """ def _checkOverloads(item): overloads = item.all() for i in range(len(overloads)): for j in range(len(overloads)): if i == j: continue item1 = overloads[i] item2 = overloads[j] if item1.ignored or item2.ignored: continue if (item1.argsString.replace(' const', '').strip() == item2.argsString.replace(' const', '').strip()): if item1.isConst: item1.ignore() return elif item2.isConst: item2.ignore() return for item in node.items: if isinstance(item, extractors.MethodDef) and item.overloads: _checkOverloads(item) def addAutoProperties(node): """ Call klass.addAutoProperties for all classes in node with allowAutoProperties set and which do not already have properties added by hand in the tweaker code. """ for item in node.allItems(): if isinstance(item, extractors.ClassDef): if not item.allowAutoProperties: continue if len([i for i in item if isinstance(i, extractors.PropertyDef)]): continue item.addAutoProperties() def fixEventClass(klass, ignoreProtected=True): """ Add the extra stuff that an event class needs that are lacking from the interface headers. """ assert isinstance(klass, extractors.ClassDef) if klass.name != 'wxEvent': # Clone() in wxEvent is pure virtual, so we need to let the back-end # know that the other event classes have an implementation for it so # it won't think that they are abstract classes too. if not klass.findItem('Clone'): klass.addPublic('virtual wxEvent* Clone() const /Factory/;') else: klass.findItem('Clone').factory = True # Add a private assignment operator so the back-end (if it's watching out # for this) won't try to make copies by assignment. klass.addPrivateAssignOp() if not ignoreProtected: for item in klass.allItems(): if isinstance(item, extractors.MethodDef) and item.protection == 'protected': item.ignore(False) def fixWindowClass(klass, hideVirtuals=True, ignoreProtected=True): """ Do common tweaks for a window class. """ # NOTE: it may be okay to just do mustHaveApp for top-level windows # TODO: look into that possibility klass.mustHaveApp() # The ctor and Create method transfer ownership of the this pointer to the parent for func in klass.findAll(klass.name) + klass.findAll('Create'): if isinstance(func, extractors.MethodDef): # if a class has an empty ctor it might not have this parent = func.findItem('parent') if parent: parent.transferThis = True # if there is an id param give it a default id = func.findItem('id') or func.findItem('winid') if id and not id.default: id.default = 'wxID_ANY' # if there is a pos or size parameter without a default then give it one. p = func.findItem('pos') if p and not p.default: p.default = 'wxDefaultPosition' p = func.findItem('size') if p and not p.default: p.default = 'wxDefaultSize' if hideVirtuals: # There is no need to make all the C++ virtuals overridable in Python, and # hiding the fact that they are virtual from the backend generator will # greatly reduce the amount of code that needs to be generated. Remove all # the virtual flags, and then add it back to a select few. removeVirtuals(klass) addWindowVirtuals(klass) if not klass.findItem('GetClassDefaultAttributes'): klass.addItem(extractors.WigCode("""\ static wxVisualAttributes GetClassDefaultAttributes(wxWindowVariant variant = wxWINDOW_VARIANT_NORMAL); """)) if not ignoreProtected: for item in klass.allItems(): if isinstance(item, extractors.MethodDef) and item.protection == 'protected': item.ignore(False) def fixTopLevelWindowClass(klass, hideVirtuals=True, ignoreProtected=True): """ Tweaks for TLWs """ klass.mustHaveApp() # TLW tweaks are a little different. We use the function annotation for # TransferThis instead of the argument annotation. klass.find(klass.name).findOverload('parent').transfer = True item = klass.findItem('Create') if item: item.transferThis = True # give the id param a default value for name in ['id', 'winid']: for item in [klass.findItem('%s.%s' % (klass.name, name)), klass.findItem('Create.%s' % name)]: if item: item.default = 'wxID_ANY' # give title param a default too if it needs it for item in [klass.findItem('%s.title' % klass.name), klass.findItem('Create.title')]: if item and not item.default: item.default = 'wxEmptyString' if hideVirtuals: removeVirtuals(klass) addWindowVirtuals(klass) if not ignoreProtected: for item in klass.allItems(): if isinstance(item, extractors.MethodDef) and item.protection == 'protected': item.ignore(False) def fixSizerClass(klass): """ Remove all virtuals except for CalcMin and RecalcSizes. """ removeVirtuals(klass) klass.find('CalcMin').isVirtual = True klass.find('RecalcSizes').isVirtual = True # in the wxSizer class they are pure-virtual if klass.name == 'wxSizer': klass.find('CalcMin').isPureVirtual = True klass.find('RecalcSizes').isPureVirtual = True def fixBookctrlClass(klass): """ Add declarations of the pure virtual methods from the base class. """ methods = [ ("GetPageImage", "virtual int GetPageImage(size_t nPage) const;"), ("SetPageImage", "virtual bool SetPageImage(size_t page, int image);"), ("GetPageText", "virtual wxString GetPageText(size_t nPage) const;"), ("SetPageText", "virtual bool SetPageText(size_t page, const wxString& text);"), ("GetSelection", "virtual int GetSelection() const;"), ("SetSelection", "virtual int SetSelection(size_t page);"), ("ChangeSelection", "virtual int ChangeSelection(size_t page);"), ("HitTest", "virtual int HitTest(const wxPoint& pt, long* flags /Out/ = NULL) const;"), ("InsertPage", "virtual bool InsertPage(size_t index, wxWindow * page, const wxString & text, bool select = false, int imageId = NO_IMAGE);"), ("DeleteAllPages", "virtual bool DeleteAllPages();") ] for name, decl in methods: if not klass.findItem(name): klass.addItem(extractors.WigCode(decl)) def fixHtmlSetFonts(klass): # Use wxArrayInt instead of a C array of ints. m = klass.find('SetFonts') m.find('sizes').type = 'const wxArrayInt&' m.find('sizes').default = '' m.argsString = '(const wxString & normal_face, const wxString & fixed_face, const wxArrayInt& sizes)' m.setCppCode("""\ if (sizes->GetCount() != 7) { wxPyErr_SetString(PyExc_ValueError, "Sequence of 7 integers expected."); return; } self->SetFonts(*normal_face, *fixed_face, &sizes->Item(0)); """) def fixSetStatusWidths(m): # We already have a MappedType for wxArrayInt, so just tweak the # interface to use that instead of an array size and a const int pointer. m.find('n').ignore() m.find('widths_field').type = 'const wxArrayInt&' m.find('widths_field').name = 'widths' m.argsString = '(int n, const wxArrayInt& widths)' m.setCppCode("""\ const int* ptr = &widths->front(); self->SetStatusWidths(widths->size(), ptr); """) def fixRefCountedClass(klass): # Set the Transfer annotation on the ctors, because the C++ objects # own themselves and will delete themselves when their C++ refcount # drops to zero. for item in klass.allItems(): if isinstance(item, extractors.MethodDef) and item.isCtor: item.transfer = True def fixTextClipboardMethods(klass): """ Adds virtual behavior to Copy/Cut/Paste/Undo/Redo methods, and their Can* counterparts, of the given class. :param ClassDef klass: The class to modify. """ for name in ('Cut', 'Copy', 'Paste', 'Undo', 'Redo'): for method in (name, "Can{}".format(name)): try: klass.find(method).isVirtual = True except extractors.ExtractorError: pass def removeVirtuals(klass): """ Sometimes methods are marked as virtual but probably don't ever need to be overridden from Python. This function will unset the virtual flag for all methods in a class, which can save some code-bloat in the wrapper code. """ assert isinstance(klass, extractors.ClassDef) for item in klass.allItems(): if isinstance(item, extractors.MethodDef): item.isVirtual = item.isPureVirtual = False def addWindowVirtuals(klass): """ Either turn the virtual flag back on or add a declaration for the subset of the C++ virtuals in wxWindow classes that we will be supporting. """ publicWindowVirtuals = [ ('GetClientAreaOrigin', 'wxPoint GetClientAreaOrigin() const'), ('Validate', 'bool Validate()'), ('TransferDataToWindow', 'bool TransferDataToWindow()'), ('TransferDataFromWindow', 'bool TransferDataFromWindow()'), ('InitDialog', 'void InitDialog()'), ('AcceptsFocus', 'bool AcceptsFocus() const'), ('AcceptsFocusRecursively', 'bool AcceptsFocusRecursively() const'), ('AcceptsFocusFromKeyboard', 'bool AcceptsFocusFromKeyboard() const'), ('AddChild', 'void AddChild( wxWindowBase *child )'), ('RemoveChild', 'void RemoveChild( wxWindowBase *child )'), ('InheritAttributes', 'void InheritAttributes()'), ('ShouldInheritColours', 'bool ShouldInheritColours() const'), ('OnInternalIdle', 'void OnInternalIdle()'), ('GetMainWindowOfCompositeControl', 'wxWindow *GetMainWindowOfCompositeControl()'), ('InformFirstDirection', 'bool InformFirstDirection(int direction, int size, int availableOtherDir)'), ('SetCanFocus', 'void SetCanFocus(bool canFocus)'), ('Destroy', 'bool Destroy()'), ('SetValidator', 'void SetValidator( const wxValidator &validator )'), ('GetValidator', 'wxValidator* GetValidator()'), ## What about these? #bool HasMultiplePages() const #void UpdateWindowUI(long flags = wxUPDATE_UI_NONE); #void DoUpdateWindowUI(wxUpdateUIEvent& event) ; ] protectedWindowVirtuals = [ ('ProcessEvent', 'bool ProcessEvent(wxEvent & event)'), ('DoEnable', 'void DoEnable(bool enable)'), ('DoGetPosition', 'void DoGetPosition(int *x, int *y) const'), ('DoGetSize', 'void DoGetSize(int *width, int *height) const'), ('DoGetClientSize', 'void DoGetClientSize(int *width, int *height) const'), ('DoGetBestSize', 'wxSize DoGetBestSize() const'), ('DoGetBestClientSize', 'wxSize DoGetBestClientSize() const'), ('DoSetSize', 'void DoSetSize(int x, int y, int width, int height, int sizeFlags)'), ('DoSetClientSize', 'void DoSetClientSize(int width, int height)'), ('DoSetSizeHints', 'void DoSetSizeHints( int minW, int minH, int maxW, int maxH, int incW, int incH )'), ('DoGetBorderSize', 'wxSize DoGetBorderSize() const'), ('DoMoveWindow', 'void DoMoveWindow(int x, int y, int width, int height)'), ('DoSetWindowVariant', 'void DoSetWindowVariant( wxWindowVariant variant)'), ('GetDefaultBorder', 'wxBorder GetDefaultBorder() const'), ('GetDefaultBorderForControl','wxBorder GetDefaultBorderForControl() const'), ('DoFreeze', 'void DoFreeze()'), ('DoThaw', 'void DoThaw()'), ('HasTransparentBackground', 'bool HasTransparentBackground()'), ('TryBefore', 'bool TryBefore(wxEvent& event)'), ('TryAfter', 'bool TryAfter(wxEvent& event)'), ## What about these? #('DoGetScreenPosition', 'void DoGetScreenPosition(int *x, int *y) const'), #('DoSetVirtualSize', 'void DoSetVirtualSize( int x, int y )'), #('DoGetVirtualSize', 'wxSize DoGetVirtualSize() const'), ] def _processItems(klass, prot, virtuals): txt = '' for name, decl in virtuals: m = klass.findItem(name) if m: m.ignore(False) m.isVirtual = True else: txt += 'virtual %s;\n' % decl if txt: txt = prot + txt return txt txt = _processItems(klass, 'public:\n', publicWindowVirtuals) klass.addItem(extractors.WigCode(txt)) txt = _processItems(klass, 'protected:\n', protectedWindowVirtuals) klass.addItem(extractors.WigCode(txt)) klass.addPublic() def addSipConvertToSubClassCode(klass): """ Teach SIP how to convert to specific subclass types """ klass.addItem(extractors.WigCode("""\ %ConvertToSubClassCode const wxClassInfo* info = sipCpp->GetClassInfo(); wxString name = info->GetClassName(); bool exists = sipFindType(name) != NULL; while (info && !exists) { info = info->GetBaseClass1(); name = info->GetClassName(); exists = sipFindType(name) != NULL; } if (info) sipType = sipFindType(name); else sipType = NULL; %End """)) def getEtgFiles(names): """ Create a list of the files from the basenames in the names list that correspond to files in the etg folder. """ return getMatchingFiles(names, 'etg/%s.py') def getNonEtgFiles(names, template='src/%s.sip'): """ Get the files other than the ETG scripts from the list of names that match the template. By default gets the SIP files in src. """ return getMatchingFiles(names, template) def getMatchingFiles(names, template): """ Create a list of files from the basenames in names that match the template and actually exist. """ files = list() for name in names: name = template % name if os.path.exists(name): files.append(name) return files def doCommonTweaks(module): """ A collection of tweaks that should probably be done to all modules. """ ignoreAssignmentOperators(module) removeWxPrefixes(module) addAutoProperties(module) def changeTypeNames(module, oldName, newName, skipTypedef=False): """ Changes the matching type names for functions and parameters to a new name, and optionally adds typedefs for the new name as well. """ if not skipTypedef: module.addHeaderCode("typedef {old} {new};".format(old=oldName, new=newName)) module.addItem(extractors.TypedefDef(type=oldName, name=newName)) for item in module.allItems(): if isinstance(item, (extractors.FunctionDef, extractors.ParamDef)) and \ hasattr(item, 'type') and oldName in item.type: item.type = item.type.replace(oldName, newName) def copyClassDef(klass, newName): """ Make a copy of a class object and give it a new name. """ oldName = klass.name klass = copy.deepcopy(klass) assert isinstance(klass, extractors.ClassDef) klass.name = newName for ctor in klass.find(oldName).all(): ctor.name = newName if klass.findItem('~'+oldName): klass.find('~'+oldName).name = '~'+newName return klass #--------------------------------------------------------------------------- def getWrapperGenerator(): """ A simple factory function to create a wrapper generator class of the desired type. """ if '--swig' in sys.argv: from etgtools import swig_generator gClass = swig_generator.SwigWrapperGenerator elif '--sip' in sys.argv: from etgtools import sip_generator gClass = sip_generator.SipWrapperGenerator else: # The default is sip from etgtools import sip_generator gClass = sip_generator.SipWrapperGenerator return gClass() def getDocsGenerator(): if '--nodoc' in sys.argv: from etgtools import generators return generators.StubbedDocsGenerator() elif '--sphinx' in sys.argv: from etgtools import sphinx_generator return sphinx_generator.SphinxGenerator() else: # the current default is sphinx from etgtools import sphinx_generator return sphinx_generator.SphinxGenerator() def runGenerators(module): checkForUnitTestModule(module) generators = list() # Create the code generator selected from command line args generators.append(getWrapperGenerator()) # Toss in the PI generator too from etgtools import pi_generator generators.append(pi_generator.PiWrapperGenerator()) # Now the item map generator from etgtools import map_generator generators.append((map_generator.ItemMapGenerator())) # And finally add the documentation generator generators.append(getDocsGenerator()) # run the generators for g in generators: g.generate(module) def checkForUnitTestModule(module): pathname = 'unittests/test_%s.py' % module.name if os.path.exists(pathname) or not module.check4unittest: return print('WARNING: Unittest module (%s) not found!' % pathname) #--------------------------------------------------------------------------- def addGetIMMethodTemplate(module, klass, fields): """ Add a bit of code to the module, and add a GetIM method to the klass which returns an immutable representation self. """ name = klass.pyName or klass.name if name.startswith('wx'): name = name[2:] module.addPyCode("""\ from collections import namedtuple _im_{name} = namedtuple('_im_{name}', {fields}) del namedtuple """.format(name=name, fields=str(fields))) klass.addPyMethod('GetIM', '(self)', doc="""\ Returns an immutable representation of the ``wx.{name}`` object, based on ``namedtuple``. This new object is hashable and can be used as a dictionary key, be added to sets, etc. It can be converted back into a real ``wx.{name}`` with a simple statement like this: ``obj = wx.{name}(imObj)``. """.format(name=name), body="return _im_{name}(*self.Get())".format(name=name) ) #--------------------------------------------------------------------------- def convertTwoIntegersTemplate(CLASS): # Note: The GIL is already acquired where this code is used. return """\ // is it just a typecheck? if (!sipIsErr) {{ // is it already an instance of {CLASS}? if (sipCanConvertToType(sipPy, sipType_{CLASS}, SIP_NO_CONVERTORS)) return 1; if (wxPyNumberSequenceCheck(sipPy, 2)) {{ return 1; }} return 0; }} // otherwise do the conversion if (sipCanConvertToType(sipPy, sipType_{CLASS}, SIP_NO_CONVERTORS)) {{ // Just fetch the existing instance *sipCppPtr = reinterpret_cast<{CLASS}*>(sipConvertToType( sipPy, sipType_{CLASS}, sipTransferObj, SIP_NO_CONVERTORS, 0, sipIsErr)); return 0; // not a new instance }} // or create a new instance PyObject* o1 = PySequence_ITEM(sipPy, 0); PyObject* o2 = PySequence_ITEM(sipPy, 1); *sipCppPtr = new {CLASS}(wxPyInt_AsLong(o1), wxPyInt_AsLong(o2)); Py_DECREF(o1); Py_DECREF(o2); return SIP_TEMPORARY; """.format(**locals()) def convertFourIntegersTemplate(CLASS): # Note: The GIL is already acquired where this code is used. return """\ // is it just a typecheck? if (!sipIsErr) {{ // is it already an instance of {CLASS}? if (sipCanConvertToType(sipPy, sipType_{CLASS}, SIP_NO_CONVERTORS)) return 1; if (wxPyNumberSequenceCheck(sipPy, 4)) {{ return 1; }} return 0; }} // otherwise do the conversion if (sipCanConvertToType(sipPy, sipType_{CLASS}, SIP_NO_CONVERTORS)) {{ // Just fetch the existing instance *sipCppPtr = reinterpret_cast<{CLASS}*>(sipConvertToType( sipPy, sipType_{CLASS}, sipTransferObj, SIP_NO_CONVERTORS, 0, sipIsErr)); return 0; // not a new instance }} // or create a new instance PyObject* o1 = PySequence_ITEM(sipPy, 0); PyObject* o2 = PySequence_ITEM(sipPy, 1); PyObject* o3 = PySequence_ITEM(sipPy, 2); PyObject* o4 = PySequence_ITEM(sipPy, 3); *sipCppPtr = new {CLASS}(wxPyInt_AsLong(o1), wxPyInt_AsLong(o2), wxPyInt_AsLong(o3), wxPyInt_AsLong(o4)); Py_DECREF(o1); Py_DECREF(o2); Py_DECREF(o3); Py_DECREF(o4); return SIP_TEMPORARY; """.format(**locals()) def convertTwoDoublesTemplate(CLASS): # Note: The GIL is already acquired where this code is used. return """\ // is it just a typecheck? if (!sipIsErr) {{ // is it already an instance of {CLASS}? if (sipCanConvertToType(sipPy, sipType_{CLASS}, SIP_NO_CONVERTORS)) return 1; if (wxPyNumberSequenceCheck(sipPy, 2)) {{ return 1; }} return 0; }} // otherwise do the conversion if (sipCanConvertToType(sipPy, sipType_{CLASS}, SIP_NO_CONVERTORS)) {{ // Just fetch the existing instance *sipCppPtr = reinterpret_cast<{CLASS}*>(sipConvertToType( sipPy, sipType_{CLASS}, sipTransferObj, SIP_NO_CONVERTORS, 0, sipIsErr)); return 0; // not a new instance }} // or create a new instance PyObject* o1 = PySequence_ITEM(sipPy, 0); PyObject* o2 = PySequence_ITEM(sipPy, 1); *sipCppPtr = new {CLASS}(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2)); Py_DECREF(o1); Py_DECREF(o2); return SIP_TEMPORARY; """.format(**locals()) def convertFourDoublesTemplate(CLASS): # Note: The GIL is already acquired where this code is used. return """\ // is it just a typecheck? if (!sipIsErr) {{ // is it already an instance of {CLASS}? if (sipCanConvertToType(sipPy, sipType_{CLASS}, SIP_NO_CONVERTORS)) return 1; if (wxPyNumberSequenceCheck(sipPy, 4)) {{ return 1; }} return 0; }} // otherwise do the conversion if (sipCanConvertToType(sipPy, sipType_{CLASS}, SIP_NO_CONVERTORS)) {{ // Just fetch the existing instance *sipCppPtr = reinterpret_cast<{CLASS}*>(sipConvertToType( sipPy, sipType_{CLASS}, sipTransferObj, SIP_NO_CONVERTORS, 0, sipIsErr)); return 0; // not a new instance }} // or create a new instance PyObject* o1 = PySequence_ITEM(sipPy, 0); PyObject* o2 = PySequence_ITEM(sipPy, 1); PyObject* o3 = PySequence_ITEM(sipPy, 2); PyObject* o4 = PySequence_ITEM(sipPy, 3); *sipCppPtr = new {CLASS}(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2), PyFloat_AsDouble(o3), PyFloat_AsDouble(o4)); Py_DECREF(o1); Py_DECREF(o2); Py_DECREF(o3); Py_DECREF(o4); return SIP_TEMPORARY; """.format(**locals()) #--------------------------------------------------------------------------- # Templates for creating wrappers for type-specific wxList and wxArray classes def wxListWrapperTemplate(ListClass, ItemClass, module, RealItemClass=None, includeConvertToType=False, fakeListClassName=None): if RealItemClass is None: RealItemClass = ItemClass if fakeListClassName: TypeDef = "typedef %s %s;" % (ListClass, fakeListClassName) ListClass = fakeListClassName else: TypeDef = "" moduleName = module.module ListClass_pyName = removeWxPrefix(ListClass) # *** TODO: This can probably be done in a way that is not SIP-specfic. # Try creating extractor objects from scratch and attach cppMethods to # them as needed, etc.. klassCode = '''\ class {ListClass}_iterator /Abstract/ {{ // the C++ implementation of this class %TypeHeaderCode {TypeDef} class {ListClass}_iterator {{ public: {ListClass}_iterator({ListClass}::compatibility_iterator start) : m_node(start) {{}} {ItemClass}* __next__() {{ {RealItemClass}* obj = NULL; if (m_node) {{ obj = ({RealItemClass}*) m_node->GetData(); m_node = m_node->GetNext(); }} else {{ PyErr_SetString(PyExc_StopIteration, ""); }} return ({ItemClass}*)obj; }} private: {ListClass}::compatibility_iterator m_node; }}; %End public: {ItemClass}* __next__(); %MethodCode sipRes = sipCpp->__next__(); if (PyErr_Occurred()) return NULL; %End }}; class {ListClass} {{ %TypeHeaderCode {TypeDef} %End public: SIP_SSIZE_T __len__(); %MethodCode sipRes = sipCpp->size(); %End {ItemClass}* __getitem__(long index); %MethodCode if (0 > index) index += sipCpp->size(); if (index < sipCpp->size() && (0 <= index)) {{ {ListClass}::compatibility_iterator node = sipCpp->Item(index); if (node) sipRes = ({ItemClass}*)node->GetData(); }} else {{ wxPyErr_SetString(PyExc_IndexError, "sequence index out of range"); sipError = sipErrorFail; }} %End int __contains__(const {ItemClass}* obj); %MethodCode {ListClass}::compatibility_iterator node; node = sipCpp->Find(({RealItemClass}*)obj); sipRes = node != NULL; %End {ListClass}_iterator* __iter__() /Factory/; %MethodCode sipRes = new {ListClass}_iterator(sipCpp->GetFirst()); %End // TODO: add support for index(value, [start, [stop]]) int index({ItemClass}* obj); %MethodCode int idx = sipCpp->IndexOf(({RealItemClass}*)obj); if (idx == wxNOT_FOUND) {{ sipError = sipErrorFail; wxPyErr_SetString(PyExc_ValueError, "sequence.index(x): x not in sequence"); }} sipRes = idx; %End @ConvertToTypeCode@ }}; %Extract(id=pycode{moduleName}) def _{ListClass_pyName}___repr__(self): return "{ListClass_pyName}: " + repr(list(self)) {ListClass_pyName}.__repr__ = _{ListClass_pyName}___repr__ del _{ListClass_pyName}___repr__ %End ''' convertToTypeCode = '''\ %ConvertToTypeCode // Code to test a PyObject for compatibility if (!sipIsErr) {{ int success = TRUE; // is it already a {ListClass}? if (sipCanConvertToType(sipPy, sipType_{ListClass}, SIP_NO_CONVERTORS)) return success; // otherwise ensure that it is a sequence if (! PySequence_Check(sipPy)) success = FALSE; // ensure it is not a string or unicode object (they are sequences too) else if (PyBytes_Check(sipPy) || PyUnicode_Check(sipPy)) success = FALSE; // ensure each item can be converted to {ItemClass} else {{ Py_ssize_t i, len = PySequence_Length(sipPy); for (i=0; i( sipConvertToType(sipPy, sipType_{ListClass}, NULL, SIP_NO_CONVERTORS, 0, sipIsErr)); return 0; }} // Create a new {ListClass} and convert compatible PyObjects from the sequence {ListClass} *list = new {ListClass}; list->DeleteContents(true); // tell the list to take ownership of the items Py_ssize_t i, len = PySequence_Length(sipPy); for (i=0; i( sipConvertToType(pyItem, sipType_{ItemClass}, NULL, 0, &state, sipIsErr)); if (!state) // a temporary was not created for us, make one now cItem = new {ItemClass}(*cItem); list->Append(cItem); Py_DECREF(pyItem); }} *sipCppPtr = list; return SIP_TEMPORARY; %End ''' if includeConvertToType: klassCode = klassCode.replace('@ConvertToTypeCode@', convertToTypeCode) else: klassCode = klassCode.replace('@ConvertToTypeCode@', '') return extractors.WigCode(klassCode.format(**locals())) def wxArrayWrapperTemplate(ArrayClass, ItemClass, module, itemIsPtr=False, getItemCopy=False): moduleName = module.module ArrayClass_pyName = removeWxPrefix(ArrayClass) itemRef = '*' if itemIsPtr else '&' itemDeref = '' if itemIsPtr else '*' addrOf = '' if itemIsPtr else '&' # *** TODO: This can probably be done in a way that is not SIP-specific. # Try creating extractor objects from scratch and attach cppMethods to # them as needed, etc.. if not getItemCopy: getitemMeth = '''\ {ItemClass}{itemRef} __getitem__(long index); %MethodCode if (0 > index) index += sipCpp->GetCount(); if ((index < sipCpp->GetCount()) && (0 <= index)) {{ sipRes = {addrOf}sipCpp->Item(index); }} else {{ wxPyErr_SetString(PyExc_IndexError, "sequence index out of range"); sipError = sipErrorFail; }} %End '''.format(**locals()) else: getitemMeth = '''\ {ItemClass}* __getitem__(long index) /Factory/; %MethodCode if (0 > index) index += sipCpp->GetCount(); if ((index < sipCpp->GetCount()) && (0 <= index)) {{ sipRes = new {ItemClass}(sipCpp->Item(index)); }} else {{ wxPyErr_SetString(PyExc_IndexError, "sequence index out of range"); sipError = sipErrorFail; }} %End '''.format(**locals()) return extractors.WigCode('''\ class {ArrayClass} {{ public: SIP_SSIZE_T __len__(); %MethodCode sipRes = sipCpp->GetCount(); %End {getitemMeth} int __contains__({ItemClass}{itemRef} obj); %MethodCode int idx = sipCpp->Index({itemDeref}obj, false); sipRes = idx != wxNOT_FOUND; %End void append({ItemClass}{itemRef} obj); %MethodCode sipCpp->Add({itemDeref}obj); %End // TODO: add support for index(value, [start, [stop]]) int index({ItemClass}{itemRef} obj); %MethodCode int idx = sipCpp->Index({itemDeref}obj, false); if (idx == wxNOT_FOUND) {{ sipError = sipErrorFail; wxPyErr_SetString(PyExc_ValueError, "sequence.index(x): x not in sequence"); }} sipRes = idx; %End }}; %Extract(id=pycode{moduleName}) def _{ArrayClass_pyName}___repr__(self): return "{ArrayClass_pyName}: " + repr(list(self)) {ArrayClass_pyName}.__repr__ = _{ArrayClass_pyName}___repr__ del _{ArrayClass_pyName}___repr__ %End '''.format(**locals())) # Same as the above, but for use with WX_DEFINE_ARRAY_PTR def wxArrayPtrWrapperTemplate(ArrayClass, ItemClass, module): moduleName = module.module ArrayClass_pyName = removeWxPrefix(ArrayClass) # *** TODO: This can probably be done in a way that is not SIP-specfic. # Try creating extractor objects from scratch and attach cppMethods to # them as needed, etc.. return extractors.WigCode('''\ class {ArrayClass} {{ public: SIP_SSIZE_T __len__(); %MethodCode sipRes = sipCpp->GetCount(); %End {ItemClass}* __getitem__(long index); %MethodCode if (0 > index) index += sipCpp->GetCount(); if ((index < sipCpp->GetCount()) && (0 <= index)) {{ sipRes = sipCpp->Item(index); }} else {{ wxPyErr_SetString(PyExc_IndexError, "sequence index out of range"); sipError = sipErrorFail; }} %End int __contains__({ItemClass}* obj); %MethodCode int idx = sipCpp->Index(obj, false); sipRes = idx != wxNOT_FOUND; %End void append({ItemClass}* obj); %MethodCode sipCpp->Add(obj); %End // TODO: add support for index(value, [start, [stop]]) int index({ItemClass}* obj); %MethodCode int idx = sipCpp->Index(obj, false); if (idx == wxNOT_FOUND) {{ sipError = sipErrorFail; wxPyErr_SetString(PyExc_ValueError, "sequence.index(x): x not in sequence"); }} sipRes = idx; %End }}; %Extract(id=pycode{moduleName}) def _{ArrayClass_pyName}___repr__(self): return "{ArrayClass_pyName}: " + repr(list(self)) {ArrayClass_pyName}.__repr__ = _{ArrayClass_pyName}___repr__ del _{ArrayClass_pyName}___repr__ %End '''.format(**locals())) def ObjArrayHelperTemplate(objType, sipType, errmsg): """ Generates a helper function that can convert from a Python sequence of objects (or items that can be converted to the target type) into a C array of values. Copies are made of the items so the object types should support implicit or explicit copies and the copy should be cheap. This kind of helper is useful for situations where the C/C++ API takes a simple pointer and a count, and there is no higher level container object (like a wxList or wxArray) being used. If there is an overloaded method that uses one of those types then the C array overload should just be ignored. But for those cases where the C array is the only option then this helper can be used to make the array from a sequence. """ cppCode = """\ // Convert a Python sequence of {objType} objects, or items that can be converted // to {objType} into a C array of {objType} instances. static {objType}* {objType}_array_helper(PyObject* source, size_t *count) {{ {objType}* array; Py_ssize_t idx, len; wxPyThreadBlocker blocker; // ensure that it is a sequence if (! PySequence_Check(source)) goto error0; // ensure it is not a string or unicode object (they are sequences too) else if (PyBytes_Check(source) || PyUnicode_Check(source)) goto error0; // ensure each item can be converted to {objType} else {{ len = PySequence_Length(source); for (idx=0; idx( sipConvertToType(obj, {sipType}, NULL, 0, &state, &err)); array[idx] = *item; sipReleaseType((void*)item, {sipType}, state); // delete temporary instances Py_DECREF(obj); }} return array; error0: PyErr_SetString(PyExc_TypeError, "{errmsg}"); return NULL; }} """.format(**locals()) return cppCode #--------------------------------------------------------------------------- # type helpers def guessTypeInt(v): if isinstance(v, extractors.EnumValueDef): return True if isinstance(v, extractors.DefineDef) and '"' not in v.value: return True type = v.type.replace('const', '') type = type.replace(' ', '') if type in ['int', 'long', 'byte', 'size_t', 'wxCoord', 'wxEventType']: return True if 'unsigned' in type: return True return False def guessTypeFloat(v): type = v.type.replace('const', '') type = type.replace(' ', '') if type in ['float', 'double', 'wxDouble']: return True return False def guessTypeStr(v): if hasattr(v, 'value') and '"' in v.value: return True for t in ['wxString', 'wxChar', 'char*', 'char *']: if t in v.type: return True return False #--------------------------------------------------------------------------- # Tweakers to generate C++ stubs for cases where a feature is optional. By # generating stubs then we can still provide the wrapper classes but simply # have them raise NotImplemented errors or whatnot. def generateStubs(cppFlag, module, excludes=[], typeValMap={}, extraHdrCode=None, extraCppCode=None): """ Generate C++ stubs for all items in the module, except those that are in the optional excludes list. """ # First add a define for the cppFlag (like wxUSE_SOME_FEATURE) so the user # code has a way to check if an optional classis available before using it # and getting an exception. assert isinstance(module, extractors.ModuleDef) if not module.findItem(cppFlag): module.addItem(extractors.DefineDef(name=cppFlag, value='0')) excludes.append(cppFlag) # Copy incoming typeValMap so it can be updated with some stock types import copy typeValMap = copy.copy(typeValMap) typeValMap.update({ 'int': '0', 'bool': 'false', 'double': '0.0', 'wxString': 'wxEmptyString', 'const wxString &': 'wxEmptyString', 'wxString &': 'wxEmptyString', 'wxSize': 'wxDefaultSize', 'wxPoint': 'wxDefaultPosition', 'wxFileOffset': '0', }) code = _StubCodeHolder(cppFlag) # Next add forward declarations of all classes in case they refer to # each other. for item in module: if isinstance(item, extractors.ClassDef): code.hdr.append('class {};'.format(item.name)) if extraHdrCode: code.hdr.append(extraHdrCode) if extraCppCode: code.cpp.append(extraCppCode) # Now write code for all the items in the module. for item in module: if item.name in excludes: continue dispatchMap = { extractors.DefineDef : _generateDefineStub, extractors.GlobalVarDef : _generateGlobalStub, extractors.EnumDef : _generateEnumStub, extractors.ClassDef : _generateClassStub, extractors.PyCodeDef : _ignore, } func = dispatchMap.get(type(item), None) if func is None: print('WARNING: Unable to generate stub for {}, type {}'.format( item.name, type(item))) else: func(code, item, typeValMap) # Add the code to the module header module.addHeaderCode(code.renderHdr()) if code.cpp: # and possibly the module's C++ file module.addCppCode(code.renderCpp()) # A simple class for holding lists of code snippets for the header and # possibily the C++ file. class _StubCodeHolder: def __init__(self, flag): self.flag = flag self.hdr = [] self.cpp = [] def renderHdr(self): return self.doRender(self.hdr) def renderCpp(self): return self.doRender(self.cpp) def doRender(self, lst): if not lst: return '' code = ('#if !{}\n'.format(self.flag) + '\n'.join(lst) + '\n#endif //!{}\n'.format(self.flag)) return code def _ignore(*args): pass def _generateDefineStub(code, define, typeValMap): code.hdr.append('#define {} {}'.format(define.name, define.value)) def _generateGlobalStub(code, glob, typeValMap): code.hdr.append('extern {} {};'.format(glob.type, glob.name)) code.cpp.append('{} {};'.format(glob.type, glob.name)) def _generateEnumStub(code, enum, typeValMap): name = '' if enum.name.startswith('@') else enum.name code.hdr.append('\nenum {} {{'.format(name)) for item in enum: code.hdr.append(' {},'.format(item.name)) code.hdr.append('};') def _generateClassStub(code, klass, typeValMap): if not klass.bases: code.hdr.append('\nclass {} {{'.format(klass.name)) else: code.hdr.append('\nclass {} : {} {{'.format(klass.name, ', '.join(['public ' + base for base in klass.bases]))) code.hdr.append('public:') for item in klass: dispatchMap = { extractors.MethodDef : _generateMethodStub, } func = dispatchMap.get(type(item), None) if func is None: print('WARNING: Unable to generate stub for {}.{}, type {}'.format( klass.name, item.name, type(item))) else: func(code, item, typeValMap) code.hdr.append('};') def _generateMethodStub(code, method, typeValMap): assert isinstance(method, extractors.MethodDef) decl = ' ' if method.isVirtual: decl += 'virtual ' if method.isStatic: decl += 'static ' if method.isCtor or method.isDtor: decl += '{}'.format(method.name) else: decl += '{} {}'.format(method.type, method.name) decl += method.argsString if method.isPureVirtual: decl += ';' code.hdr.append(decl) if not method.isPureVirtual: impl = ' { ' if method.isCtor or method.isStatic: impl += 'wxPyRaiseNotImplemented(); ' if not (method.isCtor or method.isDtor): if not method.type == 'void': rval = typeValMap.get(method.type, None) if rval is None and '*' in method.type: rval = 'NULL' if rval is None: print("WARNING: I don't know how to return a '{}' value.".format(method.type)) rval = '0' impl += 'return {}; '.format(rval) impl += '}\n' code.hdr.append(impl) for overload in method.overloads: _generateMethodStub(code, overload, typeValMap) #---------------------------------------------------------------------------