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Diffstat (limited to 'python/codegen/reversewrapper.py')
| -rw-r--r-- | python/codegen/reversewrapper.py | 771 |
1 files changed, 0 insertions, 771 deletions
diff --git a/python/codegen/reversewrapper.py b/python/codegen/reversewrapper.py deleted file mode 100644 index f528828..0000000 --- a/python/codegen/reversewrapper.py +++ /dev/null @@ -1,771 +0,0 @@ -### -*- python -*- -### Code to generate "Reverse Wrappers", i.e. C->Python wrappers -### (C) 2004 Gustavo Carneiro <gjc@gnome.org> -import argtypes -import os - -DEBUG_MODE = ('PYGTK_CODEGEN_DEBUG' in os.environ) - -def join_ctype_name(ctype, name): - '''Joins a C type and a variable name into a single string''' - if ctype[-1] != '*': - return " ".join((ctype, name)) - else: - return "".join((ctype, name)) - - -class CodeSink(object): - def __init__(self): - self.indent_level = 0 # current indent level - self.indent_stack = [] # previous indent levels - - def _format_code(self, code): - assert isinstance(code, str) - l = [] - for line in code.split('\n'): - l.append(' '*self.indent_level + line) - if l[-1]: - l.append('') - return '\n'.join(l) - - def writeln(self, line=''): - raise NotImplementedError - - def indent(self, level=4): - '''Add a certain ammount of indentation to all lines written - from now on and until unindent() is called''' - self.indent_stack.append(self.indent_level) - self.indent_level += level - - def unindent(self): - '''Revert indentation level to the value before last indent() call''' - self.indent_level = self.indent_stack.pop() - - -class FileCodeSink(CodeSink): - def __init__(self, fp): - CodeSink.__init__(self) - assert isinstance(fp, file) - self.fp = fp - - def writeln(self, line=''): - self.fp.write(self._format_code(line)) - -class MemoryCodeSink(CodeSink): - def __init__(self): - CodeSink.__init__(self) - self.lines = [] - - def writeln(self, line=''): - self.lines.append(self._format_code(line)) - - def flush_to(self, sink): - assert isinstance(sink, CodeSink) - for line in self.lines: - sink.writeln(line.rstrip()) - self.lines = [] - - def flush(self): - l = [] - for line in self.lines: - l.append(self._format_code(line)) - self.lines = [] - return "".join(l) - -class ReverseWrapper(object): - '''Object that generates a C->Python wrapper''' - def __init__(self, cname, is_static=True): - assert isinstance(cname, str) - - self.cname = cname - ## function object we will call, or object whose method we will call - self.called_pyobj = None - ## name of method of self.called_pyobj we will call - self.method_name = None - self.is_static = is_static - - self.parameters = [] - self.declarations = MemoryCodeSink() - self.post_return_code = MemoryCodeSink() - self.body = MemoryCodeSink() - self.cleanup_actions = [] - self.pyargv_items = [] - self.pyargv_optional_items = [] - self.pyret_parse_items = [] # list of (format_spec, parameter) - - def set_call_target(self, called_pyobj, method_name=None): - assert called_pyobj is not None - assert self.called_pyobj is None - self.called_pyobj = called_pyobj - self.method_name = method_name - - def set_return_type(self, return_type): - assert isinstance(return_type, ReturnType) - self.return_type = return_type - - def add_parameter(self, param): - assert isinstance(param, Parameter) - self.parameters.append(param) - - def add_declaration(self, decl_code): - self.declarations.writeln(decl_code) - - def add_pyargv_item(self, variable, optional=False): - if optional: - self.pyargv_optional_items.append(variable) - else: - self.pyargv_items.append(variable) - - def add_pyret_parse_item(self, format_specifier, parameter, prepend=False): - if prepend: - self.pyret_parse_items.insert(0, (format_specifier, parameter)) - else: - self.pyret_parse_items.append((format_specifier, parameter)) - - def write_code(self, code, - cleanup=None, - failure_expression=None, - failure_cleanup=None, - failure_exception=None, - code_sink=None): - '''Add a chunk of code with cleanup and error handling - - This method is to be used by TypeHandlers when generating code - - Keywork arguments: - code -- code to add - cleanup -- code to cleanup any dynamic resources created by @code - (except in case of failure) (default None) - failure_expression -- C boolean expression to indicate - if anything failed (default None) - failure_cleanup -- code to cleanup any dynamic resources - created by @code in case of failure (default None) - failure_exception -- code to raise an exception in case of - failure (which will be immediately - printed and cleared), (default None) - code_sink -- "code sink" to use; by default, - ReverseWrapper.body is used, which writes the - main body of the wrapper, before calling the - python method. Alternatively, - ReverseWrapper.after_pyret_parse can be used, to - write code after the PyArg_ParseTuple that - parses the python method return value. - ''' - if code_sink is None: - code_sink = self.body - if code is not None: - code_sink.writeln(code) - if failure_expression is not None: - code_sink.writeln("if (%s) {" % (failure_expression,)) - code_sink.indent() - if failure_exception is None: - code_sink.writeln("if (PyErr_Occurred())") - code_sink.indent() - code_sink.writeln("PyErr_Print();") - code_sink.unindent() - else: - code_sink.writeln(failure_exception) - code_sink.writeln("PyErr_Print();") - if failure_cleanup is not None: - code_sink.writeln(failure_cleanup) - for cleanup_action in self.cleanup_actions: - code_sink.writeln(cleanup_action) - self.return_type.write_error_return() - code_sink.unindent() - code_sink.writeln("}") - if cleanup is not None: - self.cleanup_actions.insert(0, cleanup) - - def generate(self, sink): - '''Generate the code into a CodeSink object''' - assert isinstance(sink, CodeSink) - - if DEBUG_MODE: - self.declarations.writeln("/* begin declarations */") - self.body.writeln("/* begin main body */") - self.post_return_code.writeln("/* begin post-return code */") - - self.add_declaration("PyGILState_STATE __py_state;") - self.write_code(code="__py_state = pyg_gil_state_ensure();", - cleanup="pyg_gil_state_release(__py_state);") - - for param in self.parameters: - param.convert_c2py() - - assert self.called_pyobj is not None,\ - "Parameters failed to provide a target function or method." - - if self.is_static: - sink.writeln('static %s' % self.return_type.get_c_type()) - else: - sink.writeln(self.return_type.get_c_type()) - c_proto_params = map(Parameter.format_for_c_proto, self.parameters) - sink.writeln("%s(%s)\n{" % (self.cname, ", ".join(c_proto_params))) - - self.return_type.write_decl() - self.add_declaration("PyObject *py_retval;") - - ## Handle number of arguments - if self.pyargv_items: - self.add_declaration("PyObject *py_args;") - py_args = "py_args" - if self.pyargv_optional_items: - self.add_declaration("int argc = %i;" % len(self.pyargv_items)) - argc = "argc" - for arg in self.pyargv_optional_items: - self.body.writeln("if (%s)" % arg) - self.body.indent() - self.body.writeln("++argc;") - self.body.unindent() - else: - argc = str(len(self.pyargv_items)) - else: - if self.pyargv_optional_items: - self.add_declaration("PyObject *py_args;") - py_args = "py_args" - self.add_declaration("int argc = 0;") - argc = "argc" - for arg in self.pyargv_optional_items: - self.body.writeln("if (%s)" % arg) - self.body.indent() - self.body.writeln("++argc;") - self.body.unindent() - else: - py_args = "NULL" - argc = None - - self.body.writeln() - - if py_args != "NULL": - self.write_code("py_args = PyTuple_New(%s);" % argc, - cleanup="Py_DECREF(py_args);") - pos = 0 - for arg in self.pyargv_items: - try: # try to remove the Py_DECREF cleanup action, if we can - self.cleanup_actions.remove("Py_DECREF(%s);" % arg) - except ValueError: # otherwise we have to Py_INCREF.. - self.body.writeln("Py_INCREF(%s);" % arg) - self.body.writeln("PyTuple_SET_ITEM(%s, %i, %s);" % (py_args, pos, arg)) - pos += 1 - for arg in self.pyargv_optional_items: - self.body.writeln("if (%s) {" % arg) - self.body.indent() - try: # try to remove the Py_DECREF cleanup action, if we can - self.cleanup_actions.remove("Py_XDECREF(%s);" % arg) - except ValueError: # otherwise we have to Py_INCREF.. - self.body.writeln("Py_INCREF(%s);" % arg) - self.body.writeln("PyTuple_SET_ITEM(%s, %i, %s);" % (py_args, pos, arg)) - self.body.unindent() - self.body.writeln("}") - pos += 1 - - self.body.writeln() - - ## Call the python method - if self.method_name is None: - self.write_code("py_retval = PyObject_Call(%s, %s);" - % (self.called_pyobj, py_args), - cleanup="Py_DECREF(py_retval);", - failure_expression="!py_retval") - else: - self.add_declaration("PyObject *py_method;") - self.write_code("py_method = PyObject_GetAttrString(%s, \"%s\");" - % (self.called_pyobj, self.method_name), - cleanup="Py_DECREF(py_method);", - failure_expression="!py_method") - self.write_code("py_retval = PyObject_CallObject(py_method, %s);" - % (py_args,), - cleanup="Py_DECREF(py_retval);", - failure_expression="!py_retval") - - ## -- Handle the return value -- - - ## we need to check if the return_type object is prepared to cooperate with multiple return values - len_before = len(self.pyret_parse_items) - self.return_type.write_conversion() - len_after = len(self.pyret_parse_items) - assert (self.return_type.get_c_type() == 'void' - or not (len_before == len_after and len_after > 0)),\ - ("Bug in reverse wrappers: return type handler %s" - " is not prepared to cooperate multiple return values") % (type(self.return_type),) - - sink.indent() - - if len(self.pyret_parse_items) == 1: - ## if retval is one item only, pack it in a tuple so we - ## can use PyArg_ParseTuple as usual.. - self.write_code('py_retval = Py_BuildValue("(N)", py_retval);') - if len(self.pyret_parse_items) > 0: - ## Parse return values using PyArg_ParseTuple - self.write_code(code=None, failure_expression=( - '!PyArg_ParseTuple(py_retval, "%s", %s)' % ( - "".join([format for format, param in self.pyret_parse_items]), - ", ".join([param for format, param in self.pyret_parse_items])))) - - if DEBUG_MODE: - self.declarations.writeln("/* end declarations */") - self.declarations.flush_to(sink) - sink.writeln() - if DEBUG_MODE: - self.body.writeln("/* end main body */") - self.body.flush_to(sink) - sink.writeln() - if DEBUG_MODE: - self.post_return_code.writeln("/* end post-return code */") - self.post_return_code.flush_to(sink) - sink.writeln() - - for cleanup_action in self.cleanup_actions: - sink.writeln(cleanup_action) - if self.return_type.get_c_type() != 'void': - sink.writeln() - sink.writeln("return retval;") - sink.unindent() - sink.writeln("}") - -class TypeHandler(object): - def __init__(self, wrapper, **props): - assert isinstance(wrapper, ReverseWrapper) - self.wrapper = wrapper - self.props = props - -class ReturnType(TypeHandler): - - def get_c_type(self): - raise NotImplementedError - - def write_decl(self): - raise NotImplementedError - - def write_error_return(self): - '''Write "return <value>" code in case of error''' - raise NotImplementedError - - def write_conversion(self): - '''Writes code to convert Python return value in 'py_retval' - into C 'retval'. Returns a string with C boolean expression - that determines if anything went wrong. ''' - raise NotImplementedError - -class Parameter(TypeHandler): - - def __init__(self, wrapper, name, **props): - TypeHandler.__init__(self, wrapper, **props) - self.name = name - - def get_c_type(self): - raise NotImplementedError - - def convert_c2py(self): - '''Write some code before calling the Python method.''' - pass - - def format_for_c_proto(self): - return join_ctype_name(self.get_c_type(), self.name) - - -###--- -class StringParam(Parameter): - - def get_c_type(self): - return self.props.get('c_type', 'char *').replace('const-', 'const ') - - def convert_c2py(self): - if self.props.get('optional', False): - self.wrapper.add_declaration("PyObject *py_%s = NULL;" % self.name) - self.wrapper.write_code(code=("if (%s)\n" - " py_%s = PyString_FromString(%s);\n" - % (self.name, self.name, self.name)), - cleanup=("Py_XDECREF(py_%s);" % self.name)) - self.wrapper.add_pyargv_item("py_%s" % self.name, optional=True) - else: - self.wrapper.add_declaration("PyObject *py_%s;" % self.name) - self.wrapper.write_code(code=("py_%s = PyString_FromString(%s);" % - (self.name, self.name)), - cleanup=("Py_DECREF(py_%s);" % self.name), - failure_expression=("!py_%s" % self.name)) - self.wrapper.add_pyargv_item("py_%s" % self.name) - -for ctype in ('char*', 'gchar*', 'const-char*', 'char-const*', 'const-gchar*', - 'gchar-const*', 'string', 'static_string'): - argtypes.matcher.register_reverse(ctype, StringParam) -del ctype - -class StringReturn(ReturnType): - - def get_c_type(self): - return "char *" - - def write_decl(self): - self.wrapper.add_declaration("char *retval;") - - def write_error_return(self): - self.wrapper.write_code("return NULL;") - - def write_conversion(self): - self.wrapper.add_pyret_parse_item("s", "&retval", prepend=True) - self.wrapper.write_code("retval = g_strdup(retval);", code_sink=self.wrapper.post_return_code) - -for ctype in ('char*', 'gchar*'): - argtypes.matcher.register_reverse_ret(ctype, StringReturn) -del ctype - - -class VoidReturn(ReturnType): - - def get_c_type(self): - return "void" - - def write_decl(self): - pass - - def write_error_return(self): - self.wrapper.write_code("return;") - - def write_conversion(self): - self.wrapper.write_code( - code=None, - failure_expression="py_retval != Py_None", - failure_cleanup='PyErr_SetString(PyExc_TypeError, "retval should be None");') - -argtypes.matcher.register_reverse_ret('void', VoidReturn) -argtypes.matcher.register_reverse_ret('none', VoidReturn) - -class GObjectParam(Parameter): - - def get_c_type(self): - return self.props.get('c_type', 'GObject *') - - def convert_c2py(self): - self.wrapper.add_declaration("PyObject *py_%s = NULL;" % self.name) - self.wrapper.write_code(code=("if (%s)\n" - " py_%s = pygobject_new((GObject *) %s);\n" - "else {\n" - " Py_INCREF(Py_None);\n" - " py_%s = Py_None;\n" - "}" - % (self.name, self.name, self.name, self.name)), - cleanup=("Py_DECREF(py_%s);" % self.name)) - self.wrapper.add_pyargv_item("py_%s" % self.name) - -argtypes.matcher.register_reverse('GObject*', GObjectParam) - -class GObjectReturn(ReturnType): - - def get_c_type(self): - return self.props.get('c_type', 'GObject *') - - def write_decl(self): - self.wrapper.add_declaration("%s retval;" % self.get_c_type()) - - def write_error_return(self): - self.wrapper.write_code("return NULL;") - - def write_conversion(self): - self.wrapper.write_code( - code=None, - failure_expression="!PyObject_TypeCheck(py_retval, &PyGObject_Type)", - failure_exception='PyErr_SetString(PyExc_TypeError, "retval should be a GObject");') - self.wrapper.write_code("retval = (%s) pygobject_get(py_retval);" - % self.get_c_type()) - self.wrapper.write_code("g_object_ref((GObject *) retval);") - -argtypes.matcher.register_reverse_ret('GObject*', GObjectReturn) - - - -class IntParam(Parameter): - - def get_c_type(self): - return self.props.get('c_type', 'int') - - def convert_c2py(self): - self.wrapper.add_declaration("PyObject *py_%s;" % self.name) - self.wrapper.write_code(code=("py_%s = PyInt_FromLong(%s);" % - (self.name, self.name)), - cleanup=("Py_DECREF(py_%s);" % self.name)) - self.wrapper.add_pyargv_item("py_%s" % self.name) - -class IntReturn(ReturnType): - def get_c_type(self): - return self.props.get('c_type', 'int') - def write_decl(self): - self.wrapper.add_declaration("%s retval;" % self.get_c_type()) - def write_error_return(self): - self.wrapper.write_code("return -G_MAXINT;") - def write_conversion(self): - self.wrapper.add_pyret_parse_item("i", "&retval", prepend=True) - -for argtype in ('int', 'gint', 'guint', 'short', 'gshort', 'gushort', 'long', - 'glong', 'gsize', 'gssize', 'guint8', 'gint8', 'guint16', - 'gint16', 'gint32', 'GTime'): - argtypes.matcher.register_reverse(argtype, IntParam) - argtypes.matcher.register_reverse_ret(argtype, IntReturn) -del argtype - -class IntPtrParam(Parameter): - def __init__(self, wrapper, name, **props): - if "direction" not in props: - raise ValueError("cannot use int* parameter without direction") - if props["direction"] not in ("out", "inout"): - raise ValueError("cannot use int* parameter with direction '%s'" % (props["direction"],)) - Parameter.__init__(self, wrapper, name, **props) - def get_c_type(self): - return self.props.get('c_type', 'int*') - def convert_c2py(self): - if self.props["direction"] == "inout": - self.wrapper.add_declaration("PyObject *py_%s;" % self.name) - self.wrapper.write_code(code=("py_%s = PyInt_FromLong(*%s);" % - (self.name, self.name)), - cleanup=("Py_DECREF(py_%s);" % self.name)) - self.wrapper.add_pyargv_item("py_%s" % self.name) - self.wrapper.add_pyret_parse_item("i", self.name) -for argtype in ('int*', 'gint*'): - argtypes.matcher.register_reverse(argtype, IntPtrParam) -del argtype - - -class GEnumReturn(IntReturn): - def write_conversion(self): - self.wrapper.write_code( - code=None, - failure_expression=("pyg_enum_get_value(%s, py_retval, (gint *)&retval)" % - self.props['typecode'])) - -argtypes.matcher.register_reverse_ret("GEnum", GEnumReturn) - -class GEnumParam(IntParam): - def convert_c2py(self): - self.wrapper.add_declaration("PyObject *py_%s;" % self.name) - self.wrapper.write_code(code=("py_%s = pyg_enum_from_gtype(%s, %s);" % - (self.name, self.props['typecode'], self.name)), - cleanup=("Py_DECREF(py_%s);" % self.name), - failure_expression=("!py_%s" % self.name)) - self.wrapper.add_pyargv_item("py_%s" % self.name) - -argtypes.matcher.register_reverse("GEnum", GEnumParam) - -class GFlagsReturn(IntReturn): - def write_conversion(self): - self.wrapper.write_code( - code=None, - failure_expression=("pyg_flags_get_value(%s, py_retval, (gint *)&retval)" % - self.props['typecode'])) - -argtypes.matcher.register_reverse_ret("GFlags", GFlagsReturn) - -class GFlagsParam(IntParam): - def convert_c2py(self): - self.wrapper.add_declaration("PyObject *py_%s;" % self.name) - self.wrapper.write_code(code=("py_%s = pyg_flags_from_gtype(%s, %s);" % - (self.name, self.props['typecode'], self.name)), - cleanup=("Py_DECREF(py_%s);" % self.name), - failure_expression=("!py_%s" % self.name)) - self.wrapper.add_pyargv_item("py_%s" % self.name) - -argtypes.matcher.register_reverse("GFlags", GFlagsParam) - - -class GtkTreePathParam(IntParam): - def convert_c2py(self): - self.wrapper.add_declaration("PyObject *py_%s;" % self.name) - self.wrapper.write_code(code=("py_%s = pygtk_tree_path_to_pyobject(%s);" % - (self.name, self.name)), - cleanup=("Py_DECREF(py_%s);" % self.name), - failure_expression=("!py_%s" % self.name)) - self.wrapper.add_pyargv_item("py_%s" % self.name) - -argtypes.matcher.register_reverse("GtkTreePath*", GtkTreePathParam) - - -class BooleanReturn(ReturnType): - def get_c_type(self): - return "gboolean" - def write_decl(self): - self.wrapper.add_declaration("gboolean retval;") - self.wrapper.add_declaration("PyObject *py_main_retval;") - def write_error_return(self): - self.wrapper.write_code("return FALSE;") - def write_conversion(self): - self.wrapper.add_pyret_parse_item("O", "&py_main_retval", prepend=True) - self.wrapper.write_code("retval = PyObject_IsTrue(py_main_retval)? TRUE : FALSE;", - code_sink=self.wrapper.post_return_code) -argtypes.matcher.register_reverse_ret("gboolean", BooleanReturn) - -class BooleanParam(Parameter): - def get_c_type(self): - return "gboolean" - def convert_c2py(self): - self.wrapper.add_declaration("PyObject *py_%s;" % self.name) - self.wrapper.write_code("py_%s = %s? Py_True : Py_False;" - % (self.name, self.name)) - self.wrapper.add_pyargv_item("py_%s" % self.name) - -argtypes.matcher.register_reverse("gboolean", BooleanParam) - - -class DoubleParam(Parameter): - def get_c_type(self): - return self.props.get('c_type', 'gdouble') - def convert_c2py(self): - self.wrapper.add_declaration("PyObject *py_%s;" % self.name) - self.wrapper.write_code(code=("py_%s = PyFloat_FromDouble(%s);" % - (self.name, self.name)), - cleanup=("Py_DECREF(py_%s);" % self.name)) - self.wrapper.add_pyargv_item("py_%s" % self.name) - -class DoublePtrParam(Parameter): - def __init__(self, wrapper, name, **props): - if "direction" not in props: - raise ValueError("cannot use double* parameter without direction") - if props["direction"] not in ("out", ): # inout not yet implemented - raise ValueError("cannot use double* parameter with direction '%s'" % (props["direction"],)) - Parameter.__init__(self, wrapper, name, **props) - def get_c_type(self): - return self.props.get('c_type', 'double*') - def convert_c2py(self): - self.wrapper.add_pyret_parse_item("d", self.name) -for argtype in ('double*', 'gdouble*'): - argtypes.matcher.register_reverse(argtype, DoublePtrParam) -del argtype - -class DoubleReturn(ReturnType): - def get_c_type(self): - return self.props.get('c_type', 'gdouble') - def write_decl(self): - self.wrapper.add_declaration("%s retval;" % self.get_c_type()) - def write_error_return(self): - self.wrapper.write_code("return -G_MAXFLOAT;") - def write_conversion(self): - self.wrapper.write_code( - code=None, - failure_expression="!PyFloat_AsDouble(py_retval)", - failure_cleanup='PyErr_SetString(PyExc_TypeError, "retval should be a float");') - self.wrapper.write_code("retval = PyFloat_AsDouble(py_retval);") - -for argtype in ('float', 'double', 'gfloat', 'gdouble'): - argtypes.matcher.register_reverse(argtype, DoubleParam) - argtypes.matcher.register_reverse_ret(argtype, DoubleReturn) - - -class GBoxedParam(Parameter): - def get_c_type(self): - return self.props.get('c_type').replace('const-', 'const ') - def convert_c2py(self): - self.wrapper.add_declaration("PyObject *py_%s;" % self.name) - ctype = self.get_c_type() - if ctype.startswith('const '): - ctype_no_const = ctype[len('const '):] - self.wrapper.write_code( - code=('py_%s = pyg_boxed_new(%s, (%s) %s, TRUE, TRUE);' % - (self.name, self.props['typecode'], - ctype_no_const, self.name)), - cleanup=("Py_DECREF(py_%s);" % self.name)) - else: - self.wrapper.write_code( - code=('py_%s = pyg_boxed_new(%s, %s, FALSE, FALSE);' % - (self.name, self.props['typecode'], self.name)), - cleanup=("Py_DECREF(py_%s);" % self.name)) - self.wrapper.add_pyargv_item("py_%s" % self.name) - -argtypes.matcher.register_reverse("GBoxed", GBoxedParam) - -class GBoxedReturn(ReturnType): - def get_c_type(self): - return self.props.get('c_type') - def write_decl(self): - self.wrapper.add_declaration("%s retval;" % self.get_c_type()) - def write_error_return(self): - self.wrapper.write_code("return retval;") - def write_conversion(self): - self.wrapper.write_code( - failure_expression=("!pyg_boxed_check(py_retval, %s)" % - (self.props['typecode'],)), - failure_cleanup=('PyErr_SetString(PyExc_TypeError, "retval should be a %s");' - % (self.props['typename'],))) - self.wrapper.write_code('retval = pyg_boxed_get(py_retval, %s);' % - self.props['typename']) - -argtypes.matcher.register_reverse_ret("GBoxed", GBoxedReturn) - - -class GdkRectanglePtrParam(Parameter): - def get_c_type(self): - return self.props.get('c_type').replace('const-', 'const ') - def convert_c2py(self): - self.wrapper.add_declaration("PyObject *py_%s;" % self.name) - self.wrapper.write_code( - code=('py_%s = pyg_boxed_new(GDK_TYPE_RECTANGLE, %s, TRUE, TRUE);' % - (self.name, self.name)), - cleanup=("Py_DECREF(py_%s);" % self.name)) - self.wrapper.add_pyargv_item("py_%s" % self.name) - -argtypes.matcher.register_reverse("GdkRectangle*", GdkRectanglePtrParam) -argtypes.matcher.register_reverse('GtkAllocation*', GdkRectanglePtrParam) - - -class PyGObjectMethodParam(Parameter): - def __init__(self, wrapper, name, method_name, **props): - Parameter.__init__(self, wrapper, name, **props) - self.method_name = method_name - - def get_c_type(self): - return self.props.get('c_type', 'GObject *') - - def convert_c2py(self): - self.wrapper.add_declaration("PyObject *py_%s;" % self.name) - self.wrapper.write_code(code=("py_%s = pygobject_new((GObject *) %s);" % - (self.name, self.name)), - cleanup=("Py_DECREF(py_%s);" % self.name), - failure_expression=("!py_%s" % self.name)) - self.wrapper.set_call_target("py_%s" % self.name, self.method_name) - -class CallbackInUserDataParam(Parameter): - def __init__(self, wrapper, name, free_it, **props): - Parameter.__init__(self, wrapper, name, **props) - self.free_it = free_it - - def get_c_type(self): - return "gpointer" - - def convert_c2py(self): - self.wrapper.add_declaration("PyObject **_user_data;") - cleanup = self.free_it and ("g_free(%s);" % self.name) or None - self.wrapper.write_code(code=("_real_user_data = (PyObject **) %s;" - % self.name), - cleanup=cleanup) - - self.wrapper.add_declaration("PyObject *py_func;") - cleanup = self.free_it and "Py_DECREF(py_func);" or None - self.wrapper.write_code(code="py_func = _user_data[0];", - cleanup=cleanup) - self.wrapper.set_call_target("py_func") - - self.wrapper.add_declaration("PyObject *py_user_data;") - cleanup = self.free_it and "Py_XDECREF(py_user_data);" or None - self.wrapper.write_code(code="py_user_data = _user_data[1];", - cleanup=cleanup) - self.wrapper.add_pyargv_item("py_user_data", optional=True) - -def _test(): - import sys - - if 1: - wrapper = ReverseWrapper("this_is_the_c_function_name", is_static=True) - wrapper.set_return_type(StringReturn(wrapper)) - wrapper.add_parameter(PyGObjectMethodParam(wrapper, "self", method_name="do_xxx")) - wrapper.add_parameter(StringParam(wrapper, "param2", optional=True)) - wrapper.add_parameter(GObjectParam(wrapper, "param3")) - #wrapper.add_parameter(InoutIntParam(wrapper, "param4")) - wrapper.generate(FileCodeSink(sys.stderr)) - - if 0: - wrapper = ReverseWrapper("this_a_callback_wrapper") - wrapper.set_return_type(VoidReturn(wrapper)) - wrapper.add_parameter(StringParam(wrapper, "param1", optional=False)) - wrapper.add_parameter(GObjectParam(wrapper, "param2")) - wrapper.add_parameter(CallbackInUserDataParam(wrapper, "data", free_it=True)) - wrapper.generate(FileCodeSink(sys.stderr)) - -if __name__ == '__main__': - _test() |