# -*- Mode: Python; py-indent-offset: 4 -*- import string import keyword import struct class VarList: """Nicely format a C variable list""" def __init__(self): self.vars = {} def add(self, ctype, name): if self.vars.has_key(ctype): self.vars[ctype] = self.vars[ctype] + (name,) else: self.vars[ctype] = (name,) def __str__(self): ret = [] for type in self.vars.keys(): ret.append(' ') ret.append(type) ret.append(' ') ret.append(string.join(self.vars[type], ', ')) ret.append(';\n') if ret: ret.append('\n') return string.join(ret, '') return '' class WrapperInfo: """A class that holds information about variable defs, code snippets, etcd for use in writing out the function/method wrapper.""" def __init__(self): self.varlist = VarList() self.parsestr = '' self.parselist = ['', 'kwlist'] self.codebefore = [] self.codeafter = [] self.arglist = [] self.kwlist = [] def get_parselist(self): return string.join(self.parselist, ', ') def get_codebefore(self): return string.join(self.codebefore, '') def get_codeafter(self): return string.join(self.codeafter, '') def get_arglist(self): return string.join(self.arglist, ', ') def get_varlist(self): return str(self.varlist) def get_kwlist(self): ret = ' static char *kwlist[] = { %s };\n' % \ string.join(self.kwlist + [ 'NULL' ], ', ') if not self.get_varlist(): ret = ret + '\n' return ret def add_parselist(self, codes, parseargs, keywords): self.parsestr = self.parsestr + codes for arg in parseargs: self.parselist.append(arg) for kw in keywords: if keyword.iskeyword(kw): kw = kw + '_' self.kwlist.append('"%s"' % kw) class ArgType: def write_param(self, ptype, pname, pdflt, pnull, keeprefcount, info): """Add code to the WrapperInfo instance to handle parameter.""" raise RuntimeError, "write_param not implemented for %s" % \ self.__class__.__name__ def write_return(self, ptype, ownsreturn, info): """Adds a variable named ret of the return type to info.varlist, and add any required code to info.codeafter to convert the return value to a python object.""" raise RuntimeError, "write_return not implemented for %s" % \ self.__class__.__name__ class NoneArg(ArgType): def write_return(self, ptype, ownsreturn, info): info.codeafter.append(' Py_INCREF(Py_None);\n' + ' return Py_None;') class StringArg(ArgType): def write_param(self, ptype, pname, pdflt, pnull, keeprefcount, info): if pdflt: if pdflt != 'NULL': pdflt = '"' + pdflt + '"' info.varlist.add('char', '*' + pname + ' = ' + pdflt) else: info.varlist.add('char', '*' + pname) info.arglist.append(pname) if pnull: info.add_parselist('z', ['&' + pname], [pname]) else: info.add_parselist('s', ['&' + pname], [pname]) def write_return(self, ptype, ownsreturn, info): if ownsreturn: # have to free result ... info.varlist.add('gchar', '*ret') info.codeafter.append(' if (ret) {\n' + ' PyObject *py_ret = PyString_FromString(ret);\n' + ' g_free(ret);\n' + ' return py_ret;\n' + ' }\n' + ' Py_INCREF(Py_None);\n' + ' return Py_None;') else: info.varlist.add('const gchar', '*ret') info.codeafter.append(' if (ret)\n' + ' return PyString_FromString(ret);\n'+ ' Py_INCREF(Py_None);\n' + ' return Py_None;') class UCharArg(ArgType): # allows strings with embedded NULLs. def write_param(self, ptype, pname, pdflt, pnull, keeprefcount, info): if pdflt: info.varlist.add('guchar', '*' + pname + ' = "' + pdflt + '"') else: info.varlist.add('guchar', '*' + pname) info.varlist.add('int', pname + '_len') info.arglist.append(pname) if pnull: info.add_parselist('z#', ['&' + pname, '&' + pname + '_len'], [pname]) else: info.add_parselist('s#', ['&' + pname, '&' + pname + '_len'], [pname]) class CharArg(ArgType): def write_param(self, ptype, pname, pdflt, pnull, keeprefcount, info): if pdflt: info.varlist.add('char', pname + " = '" + pdflt + "'") else: info.varlist.add('char', pname) info.arglist.append(pname) info.add_parselist('c', ['&' + pname], [pname]) def write_return(self, ptype, ownsreturn, info): info.varlist.add('gchar', 'ret') info.codeafter.append(' return PyString_FromStringAndSize(&ret, 1);') class GUniCharArg(ArgType): ret_tmpl = ('#if !defined(Py_UNICODE_SIZE) || Py_UNICODE_SIZE == 2\n' ' if (ret > 0xffff) {\n' ' PyErr_SetString(PyExc_RuntimeError, "returned character can not be represented in 16-bit unicode");\n' ' return NULL;\n' ' }\n' '#endif\n' ' py_ret = (Py_UNICODE)ret;\n' ' return PyUnicode_FromUnicode(&py_ret, 1);\n') def write_param(self, ptype, pname, pdflt, pnull, keeprefcount, info): if pdflt: info.varlist.add('gunichar', pname + " = '" + pdflt + "'") else: info.varlist.add('gunichar', pname) info.arglist.append(pname) info.add_parselist('O&', ['pyg_pyobj_to_unichar_conv', '&' + pname], [pname]) def write_return(self, ptype, ownsreturn, info): info.varlist.add('gunichar', 'ret') info.varlist.add('Py_UNICODE', 'py_ret') info.codeafter.append(self.ret_tmpl) class IntArg(ArgType): def write_param(self, ptype, pname, pdflt, pnull, keeprefcount, info): if pdflt: info.varlist.add('int', pname + ' = ' + pdflt) else: info.varlist.add('int', pname) info.arglist.append(pname) info.add_parselist('i', ['&' + pname], [pname]) def write_return(self, ptype, ownsreturn, info): info.varlist.add('int', 'ret') info.codeafter.append(' return PyInt_FromLong(ret);') class UIntArg(ArgType): dflt = (' if (py_%(name)s) {\n' ' if (PyLong_Check(py_%(name)s))\n' ' %(name)s = PyLong_AsUnsignedLong(py_%(name)s);\n' ' else if (PyInt_Check(py_%(name)s))\n' ' %(name)s = PyInt_AsLong(py_%(name)s);\n' ' else\n' ' PyErr_SetString(PyExc_TypeError, "Parameter \'%(name)s\' must be an int or a long");\n' ' if (PyErr_Occurred())\n' ' return NULL;\n' ' }\n') before = (' if (PyLong_Check(py_%(name)s))\n' ' %(name)s = PyLong_AsUnsignedLong(py_%(name)s);\n' ' else if (PyInt_Check(py_%(name)s))\n' ' %(name)s = PyInt_AsLong(py_%(name)s);\n' ' else\n' ' PyErr_SetString(PyExc_TypeError, "Parameter \'%(name)s\' must be an int or a long");\n' ' if (PyErr_Occurred())\n' ' return NULL;\n') def write_param(self, ptype, pname, pdflt, pnull, keeprefcount, info): if not pdflt: pdflt = '0'; info.varlist.add(ptype, pname + ' = ' + pdflt) info.codebefore.append(self.dflt % {'name':pname}) info.varlist.add('PyObject', "*py_" + pname + ' = NULL') info.arglist.append(pname) info.add_parselist('O', ['&py_' + pname], [pname]) def write_return(self, ptype, ownsreturn, info): info.varlist.add(ptype, 'ret') info.codeafter.append(' return PyLong_FromUnsignedLong(ret);') class SizeArg(ArgType): if struct.calcsize('P') <= struct.calcsize('l'): llp64 = True else: llp64 = False def write_param(self, ptype, pname, pdflt, pnull, keeprefcount, info): if pdflt: info.varlist.add(ptype, pname + ' = ' + pdflt) else: info.varlist.add(ptype, pname) info.arglist.append(pname) if self.llp64: info.add_parselist('k', ['&' + pname], [pname]) else: info.add_parselist('K', ['&' + pname], [pname]) def write_return(self, ptype, ownsreturn, info): info.varlist.add(ptype, 'ret') if self.llp64: info.codeafter.append(' return PyLong_FromUnsignedLongLong(ret);\n') else: info.codeafter.append(' return PyLong_FromUnsignedLong(ret);\n') class SSizeArg(ArgType): if struct.calcsize('P') <= struct.calcsize('l'): llp64 = True else: llp64 = False def write_param(self, ptype, pname, pdflt, pnull, keeprefcount, info): if pdflt: info.varlist.add(ptype, pname + ' = ' + pdflt) else: info.varlist.add(ptype, pname) info.arglist.append(pname) if self.llp64: info.add_parselist('l', ['&' + pname], [pname]) else: info.add_parselist('L', ['&' + pname], [pname]) def write_return(self, ptype, ownsreturn, info): info.varlist.add(ptype, 'ret') if self.llp64: info.codeafter.append(' return PyLong_FromLongLong(ret);\n') else: info.codeafter.append(' return PyLong_FromLong(ret);\n') class LongArg(ArgType): def write_param(self, ptype, pname, pdflt, pnull, keeprefcount, info): if pdflt: info.varlist.add(ptype, pname + ' = ' + pdflt) else: info.varlist.add(ptype, pname) info.arglist.append(pname) info.add_parselist('l', ['&' + pname], [pname]) def write_return(self, ptype, ownsreturn, info): info.varlist.add(ptype, 'ret') info.codeafter.append(' return PyInt_FromLong(ret);\n') class BoolArg(IntArg): def write_return(self, ptype, ownsreturn, info): info.varlist.add('int', 'ret') info.codeafter.append(' return PyBool_FromLong(ret);\n') class TimeTArg(ArgType): def write_param(self, ptype, pname, pdflt, pnull, keeprefcount, info): if pdflt: info.varlist.add('time_t', pname + ' = ' + pdflt) else: info.varlist.add('time_t', pname) info.arglist.append(pname) info.add_parselist('i', ['&' + pname], [pname]) def write_return(self, ptype, ownsreturn, info): info.varlist.add('time_t', 'ret') info.codeafter.append(' return PyInt_FromLong(ret);') class ULongArg(ArgType): def write_param(self, ptype, pname, pdflt, pnull, keeprefcount, info): if pdflt: info.varlist.add('unsigned long', pname + ' = ' + pdflt) else: info.varlist.add('unsigned long', pname) info.arglist.append(pname) info.add_parselist('k', ['&' + pname], [pname]) def write_return(self, ptype, ownsreturn, info): info.varlist.add(ptype, 'ret') info.codeafter.append(' return PyLong_FromUnsignedLong(ret);\n') class UInt32Arg(ULongArg): def write_param(self, ptype, pname, pdflt, pnull, keeprefcount, info): ULongArg.write_param(self, ptype, pname, pdflt, pnull, keeprefcount, info) ## if sizeof(unsigned long) > sizeof(unsigned int), we need to ## check the value is within guint32 range if struct.calcsize('L') > struct.calcsize('I'): info.codebefore.append(( ' if (%(pname)s > G_MAXUINT32) {\n' ' PyErr_SetString(PyExc_ValueError,\n' ' "Value out of range in conversion of"\n' ' " %(pname)s parameter to unsigned 32 bit integer");\n' ' return NULL;\n' ' }\n') % vars()) class Int64Arg(ArgType): def write_param(self, ptype, pname, pdflt, pnull, keeprefcount, info): if pdflt: info.varlist.add('gint64', pname + ' = ' + pdflt) else: info.varlist.add('gint64', pname) info.arglist.append(pname) info.add_parselist('L', ['&' + pname], [pname]) def write_return(self, ptype, ownsreturn, info): info.varlist.add('gint64', 'ret') info.codeafter.append(' return PyLong_FromLongLong(ret);') class UInt64Arg(ArgType): dflt = ' if (py_%(name)s)\n' \ ' %(name)s = PyLong_AsUnsignedLongLong(py_%(name)s);\n' before = ' %(name)s = PyLong_AsUnsignedLongLong(py_%(name)s);\n' def write_param(self, ptype, pname, pdflt, pnull, keeprefcount, info): if pdflt: info.varlist.add('guint64', pname + ' = ' + pdflt) info.codebefore.append(self.dflt % {'name':pname}) else: info.varlist.add('guint64', pname) info.codebefore.append(self.before % {'name':pname}) info.varlist.add('PyObject', "*py_" + pname + ' = NULL') info.arglist.append(pname) info.add_parselist('O!', ['&PyLong_Type', '&py_' + pname], [pname]) def write_return(self, ptype, ownsreturn, info): info.varlist.add('guint64', 'ret') info.codeafter.append(' return PyLong_FromUnsignedLongLong(ret);') class DoubleArg(ArgType): def write_param(self, ptype, pname, pdflt, pnull, keeprefcount, info): if pdflt: info.varlist.add('double', pname + ' = ' + pdflt) else: info.varlist.add('double', pname) info.arglist.append(pname) info.add_parselist('d', ['&' + pname], [pname]) def write_return(self, ptype, ownsreturn, info): info.varlist.add('double', 'ret') info.codeafter.append(' return PyFloat_FromDouble(ret);') class FileArg(ArgType): nulldflt = (' if (py_%(name)s == Py_None)\n' ' %(name)s = NULL;\n' ' else if (py_%(name)s && PyFile_Check(py_%(name)s)\n' ' %s = PyFile_AsFile(py_%(name)s);\n' ' else if (py_%(name)s) {\n' ' PyErr_SetString(PyExc_TypeError, "%(name)s should be a file object or None");\n' ' return NULL;\n' ' }') null = (' if (py_%(name)s && PyFile_Check(py_%(name)s)\n' ' %(name)s = PyFile_AsFile(py_%(name)s);\n' ' else if (py_%(name)s != Py_None) {\n' ' PyErr_SetString(PyExc_TypeError, "%(name)s should be a file object or None");\n' ' return NULL;\n' ' }\n') dflt = (' if (py_%(name)s)\n' ' %(name)s = PyFile_AsFile(py_%(name)s);\n') def write_param(self, ptype, pname, pdflt, pnull, keeprefcount, info): if pnull: if pdflt: info.varlist.add('FILE', '*' + pname + ' = ' + pdflt) info.varlist.add('PyObject', '*py_' + pname + ' = NULL') info.codebefore.append(self.nulldflt % {'name':pname}) else: info.varlist.add('FILE', '*' + pname + ' = NULL') info.varlist.add('PyObject', '*py_' + pname) info.codebefore.append(self.null & {'name':pname}) info.arglist.appned(pname) info.add_parselist('O', ['&py_' + pname], [pname]) else: if pdflt: info.varlist.add('FILE', '*' + pname + ' = ' + pdflt) info.varlist.add('PyObject', '*py_' + pname + ' = NULL') info.codebefore.append(self.dflt % {'name':pname}) info.arglist.append(pname) else: info.varlist.add('PyObject', '*' + pname) info.arglist.append('PyFile_AsFile(' + pname + ')') info.add_parselist('O!', ['&PyFile_Type', '&' + pname], [pname]) def write_return(self, ptype, ownsreturn, info): info.varlist.add('FILE', '*ret') info.codeafter.append(' if (ret)\n' + ' return PyFile_FromFile(ret, "", "", fclose);\n' + ' Py_INCREF(Py_None);\n' + ' return Py_None;') class EnumArg(ArgType): enum = (' if (pyg_enum_get_value(%(typecode)s, py_%(name)s, (gint *)&%(name)s))\n' ' return NULL;\n') def __init__(self, enumname, typecode): self.enumname = enumname self.typecode = typecode def write_param(self, ptype, pname, pdflt, pnull, keeprefcount, info): if pdflt: info.varlist.add(self.enumname, pname + ' = ' + pdflt) else: info.varlist.add(self.enumname, pname) info.varlist.add('PyObject', '*py_' + pname + ' = NULL') info.codebefore.append(self.enum % { 'typecode': self.typecode, 'name': pname}) info.arglist.append(pname) info.add_parselist('O', ['&py_' + pname], [pname]); def write_return(self, ptype, ownsreturn, info): info.varlist.add('gint', 'ret') info.codeafter.append(' return pyg_enum_from_gtype(%s, ret);' % self.typecode) class FlagsArg(ArgType): flag = (' if (%(default)spyg_flags_get_value(%(typecode)s, py_%(name)s, (gint *)&%(name)s))\n' ' return NULL;\n') def __init__(self, flagname, typecode): self.flagname = flagname self.typecode = typecode def write_param(self, ptype, pname, pdflt, pnull, keeprefcount, info): if pdflt: info.varlist.add(self.flagname, pname + ' = ' + pdflt) default = "py_%s && " % (pname,) else: info.varlist.add(self.flagname, pname) default = "" info.varlist.add('PyObject', '*py_' + pname + ' = NULL') info.codebefore.append(self.flag % {'default':default, 'typecode':self.typecode, 'name':pname}) info.arglist.append(pname) info.add_parselist('O', ['&py_' + pname], [pname]) def write_return(self, ptype, ownsreturn, info): info.varlist.add('guint', 'ret') info.codeafter.append(' return pyg_flags_from_gtype(%s, ret);' % self.typecode) class ObjectArg(ArgType): # should change these checks to more typesafe versions that check # a little further down in the class heirachy. nulldflt = (' if ((PyObject *)py_%(name)s == Py_None)\n' ' %(name)s = NULL;\n' ' else if (py_%(name)s && pygobject_check(py_%(name)s, &Py%(type)s_Type))\n' ' %(name)s = %(cast)s(py_%(name)s->obj);\n' ' else if (py_%(name)s) {\n' ' PyErr_SetString(PyExc_TypeError, "%(name)s should be a %(type)s or None");\n' ' return NULL;\n' ' }\n') null = (' if (py_%(name)s && pygobject_check(py_%(name)s, &Py%(type)s_Type))\n' ' %(name)s = %(cast)s(py_%(name)s->obj);\n' ' else if ((PyObject *)py_%(name)s != Py_None) {\n' ' PyErr_SetString(PyExc_TypeError, "%(name)s should be a %(type)s or None");\n' ' return NULL;\n' ' }\n') dflt = ' if (py_%(name)s)\n' \ ' %(name)s = %(cast)s(py_%(name)s->obj);\n' def __init__(self, objname, parent, typecode): self.objname = objname self.cast = string.replace(typecode, '_TYPE_', '_', 1) self.parent = parent def write_param(self, ptype, pname, pdflt, pnull, keeprefcount, info): if pnull: if pdflt: info.varlist.add(self.objname, '*' + pname + ' = ' + pdflt) info.varlist.add('PyGObject', '*py_' + pname + ' = NULL') info.codebefore.append(self.nulldflt % {'name':pname, 'cast':self.cast, 'type':self.objname}) else: info.varlist.add(self.objname, '*' + pname + ' = NULL') info.varlist.add('PyGObject', '*py_' + pname) info.codebefore.append(self.null % {'name':pname, 'cast':self.cast, 'type':self.objname}) if ptype.endswith('*'): typename = ptype[:-1] try: const, typename = typename.split('const-') except ValueError: const = '' if typename != ptype: info.arglist.append('(%s *) %s' % (ptype[:-1], pname)) else: info.arglist.append(pname) info.add_parselist('O', ['&py_' + pname], [pname]) else: if pdflt: info.varlist.add(self.objname, '*' + pname + ' = ' + pdflt) info.varlist.add('PyGObject', '*py_' + pname + ' = NULL') info.codebefore.append(self.dflt % {'name':pname, 'cast':self.cast}) info.arglist.append(pname) info.add_parselist('O!', ['&Py%s_Type' % self.objname, '&py_' + pname], [pname]) else: info.varlist.add('PyGObject', '*' + pname) info.arglist.append('%s(%s->obj)' % (self.cast, pname)) info.add_parselist('O!', ['&Py%s_Type' % self.objname, '&' + pname], [pname]) def write_return(self, ptype, ownsreturn, info): if ptype.endswith('*'): typename = ptype[:-1] try: const, typename = typename.split('const-') except ValueError: const = '' info.varlist.add(typename, '*ret') if ownsreturn: info.varlist.add('PyObject', '*py_ret') # < GLib 2.8: using our custom _new and _unref functions # makes sure we update the proper GstObject refcount info.codeafter.append(' py_ret = pygobject_new((GObject *)ret);\n' ' if (ret != NULL)\n' ' g_object_unref((GObject *)ret);\n' ' return py_ret;') else: info.codeafter.append(' /* pygobject_new handles NULL checking */\n' + ' return pygobject_new((GObject *)ret);') class MiniObjectArg(ArgType): # should change these checks to more typesafe versions that check # a little further down in the class heirachy. nulldflt = (' if ((PyObject *)py_%(name)s == Py_None)\n' ' %(name)s = NULL;\n' ' else if (py_%(name)s) && pygstminiobject_check(py_%(name)s, &Py%(type)s_Type))\n' ' %(name)s = %(cast)s(py_%(name)s->obj);\n' ' else if (py_%(name)s) {\n' ' PyErr_SetString(PyExc_TypeError, "%(name)s should be a %(type)s or None");\n' ' return NULL;\n' ' }\n') null = (' if (py_%(name)s && pygstminiobject_check(py_%(name)s, &Py%(type)s_Type))\n' ' %(name)s = %(cast)s(py_%(name)s->obj);\n' ' else if ((PyObject *)py_%(name)s != Py_None) {\n' ' PyErr_SetString(PyExc_TypeError, "%(name)s should be a %(type)s or None");\n' ' return NULL;\n' ' }\n') dflt = ' if (py_%(name)s)\n' \ ' %(name)s = %(cast)s(py_%(name)s->obj);\n' def __init__(self, objname, parent, typecode): self.objname = objname self.cast = string.replace(typecode, '_TYPE_', '_', 1) self.parent = parent def write_param(self, ptype, pname, pdflt, pnull, keeprefcount, info): if pnull: if pdflt: info.varlist.add(self.objname, '*' + pname + ' = ' + pdflt) info.varlist.add('PyGstMiniObject', '*py_' + pname + ' = NULL') info.codebefore.append(self.nulldflt % {'name':pname, 'cast':self.cast, 'type':self.objname}) else: info.varlist.add(self.objname, '*' + pname + ' = NULL') info.varlist.add('PyGstMiniObject', '*py_' + pname) info.codebefore.append(self.null % {'name':pname, 'cast':self.cast, 'type':self.objname}) if ptype.endswith('*'): typename = ptype[:-1] try: const, typename = typename.split('const-') except ValueError: const = '' if typename != ptype: info.arglist.append('(%s *) %s' % (ptype[:-1], pname)) else: info.arglist.append(pname) info.add_parselist('O', ['&py_' + pname], [pname]) else: if pdflt: info.varlist.add(self.objname, '*' + pname + ' = ' + pdflt) info.varlist.add('PyGstMiniObject', '*py_' + pname + ' = NULL') info.codebefore.append(self.dflt % {'name':pname, 'cast':self.cast}) info.arglist.append(pname) info.add_parselist('O', ['&Py%s_Type' % self.objname, '&py_' + pname], [pname]) else: info.varlist.add('PyGstMiniObject', '*' + pname) info.arglist.append('%s(%s->obj)' % (self.cast, pname)) info.add_parselist('O!', ['&Py%s_Type' % self.objname, '&' + pname], [pname]) if keeprefcount: info.codebefore.append(' gst_mini_object_ref(GST_MINI_OBJECT(%s->obj));\n' % pname) def write_return(self, ptype, ownsreturn, info): if ptype.endswith('*'): typename = ptype[:-1] try: const, typename = typename.split('const-') except ValueError: const = '' info.varlist.add(typename, '*ret') if ownsreturn: info.varlist.add('PyObject', '*py_ret') info.codeafter.append(' py_ret = pygstminiobject_new((GstMiniObject *)ret);\n' ' if (ret != NULL)\n' ' gst_mini_object_unref((GstMiniObject *)ret);\n' ' return py_ret;') else: info.codeafter.append(' /* pygobject_new handles NULL checking */\n' + ' return pygstminiobject_new((GstMiniObject *)ret);') class BoxedArg(ArgType): # haven't done support for default args. Is it needed? check = (' if (pyg_boxed_check(py_%(name)s, %(typecode)s))\n' ' %(name)s = pyg_boxed_get(py_%(name)s, %(typename)s);\n' ' else {\n' ' PyErr_SetString(PyExc_TypeError, "%(name)s should be a %(typename)s");\n' ' return NULL;\n' ' }\n') null = (' if (pyg_boxed_check(py_%(name)s, %(typecode)s))\n' ' %(name)s = pyg_boxed_get(py_%(name)s, %(typename)s);\n' ' else if (py_%(name)s != Py_None) {\n' ' PyErr_SetString(PyExc_TypeError, "%(name)s should be a %(typename)s or None");\n' ' return NULL;\n' ' }\n') def __init__(self, ptype, typecode): self.typename = ptype self.typecode = typecode def write_param(self, ptype, pname, pdflt, pnull, keeprefcount, info): if pnull: info.varlist.add(self.typename, '*' + pname + ' = NULL') info.varlist.add('PyObject', '*py_' + pname + ' = Py_None') info.codebefore.append(self.null % {'name': pname, 'typename': self.typename, 'typecode': self.typecode}) else: info.varlist.add(self.typename, '*' + pname + ' = NULL') info.varlist.add('PyObject', '*py_' + pname) info.codebefore.append(self.check % {'name': pname, 'typename': self.typename, 'typecode': self.typecode}) if ptype[-1] == '*': typename = ptype[:-1] if typename[:6] == 'const-': typename = typename[6:] if typename != self.typename: info.arglist.append('(%s *)%s' % (ptype[:-1], pname)) else: info.arglist.append(pname) else: info.arglist.append(pname) info.add_parselist('O', ['&py_' + pname], [pname]) ret_tmpl = ' /* pyg_boxed_new handles NULL checking */\n' \ ' return pyg_boxed_new(%(typecode)s, %(ret)s, %(copy)s, TRUE);' def write_return(self, ptype, ownsreturn, info): if ptype[-1] == '*': info.varlist.add(self.typename, '*ret') ret = 'ret' else: info.varlist.add(self.typename, 'ret') ret = '&ret' ownsreturn = 0 # of course it can't own a ref to a local var ... info.codeafter.append(self.ret_tmpl % { 'typecode': self.typecode, 'ret': ret, 'copy': ownsreturn and 'FALSE' or 'TRUE'}) class CustomBoxedArg(ArgType): # haven't done support for default args. Is it needed? null = (' if (%(check)s(py_%(name)s))\n' ' %(name)s = %(get)s(py_%(name)s);\n' ' else if (py_%(name)s != Py_None) {\n' ' PyErr_SetString(PyExc_TypeError, "%(name)s should be a %(type)s or None");\n' ' return NULL;\n' ' }\n') def __init__(self, ptype, pytype, getter, new): self.pytype = pytype self.getter = getter self.checker = 'Py' + ptype + '_Check' self.new = new def write_param(self, ptype, pname, pdflt, pnull, keeprefcount, info): if pnull: info.varlist.add(ptype[:-1], '*' + pname + ' = NULL') info.varlist.add('PyObject', '*py_' + pname + ' = Py_None') info.codebefore.append(self.null % {'name': pname, 'get': self.getter, 'check': self.checker, 'type': ptype[:-1]}) info.arglist.append(pname) info.add_parselist('O', ['&py_' + pname], [pname]) else: info.varlist.add('PyObject', '*' + pname) info.arglist.append(self.getter + '(' + pname + ')') info.add_parselist('O!', ['&' + self.pytype, '&' + pname], [pname]) def write_return(self, ptype, ownsreturn, info): info.varlist.add(ptype[:-1], '*ret') info.codeafter.append(' if (ret)\n' + ' return ' + self.new + '(ret);\n' + ' Py_INCREF(Py_None);\n' + ' return Py_None;') class PointerArg(ArgType): # haven't done support for default args. Is it needed? check = (' if (pyg_pointer_check(py_%(name)s, %(typecode)s))\n' ' %(name)s = pyg_pointer_get(py_%(name)s, %(typename)s);\n' ' else {\n' ' PyErr_SetString(PyExc_TypeError, "%(name)s should be a %(typename)s");\n' ' return NULL;\n' ' }\n') null = (' if (pyg_pointer_check(py_%(name)s, %(typecode)s))\n' ' %(name)s = pyg_pointer_get(py_%(name)s, %(typename)s);\n' ' else if (py_%(name)s != Py_None) {\n' ' PyErr_SetString(PyExc_TypeError, "%(name)s should be a %(typename)s or None");\n' ' return NULL;\n' ' }\n') def __init__(self, ptype, typecode): self.typename = ptype self.typecode = typecode def write_param(self, ptype, pname, pdflt, pnull, keeprefcount, info): if pnull: info.varlist.add(self.typename, '*' + pname + ' = NULL') info.varlist.add('PyObject', '*py_' + pname + ' = Py_None') info.codebefore.append(self.null % {'name': pname, 'typename': self.typename, 'typecode': self.typecode}) else: info.varlist.add(self.typename, '*' + pname + ' = NULL') info.varlist.add('PyObject', '*py_' + pname) info.codebefore.append(self.check % {'name': pname, 'typename': self.typename, 'typecode': self.typecode}) info.arglist.append(pname) info.add_parselist('O', ['&py_' + pname], [pname]) def write_return(self, ptype, ownsreturn, info): if ptype[-1] == '*': info.varlist.add(self.typename, '*ret') info.codeafter.append(' /* pyg_pointer_new handles NULL checking */\n' + ' return pyg_pointer_new(' + self.typecode + ', ret);') else: info.varlist.add(self.typename, 'ret') info.codeafter.append(' /* pyg_pointer_new handles NULL checking */\n' + ' return pyg_pointer_new(' + self.typecode + ', &ret);') class AtomArg(IntArg): dflt = ' if (py_%(name)s) {\n' \ ' %(name)s = pygdk_atom_from_pyobject(py_%(name)s);\n' \ ' if (PyErr_Occurred())\n' \ ' return NULL;\n' \ ' }\n' atom = (' %(name)s = pygdk_atom_from_pyobject(py_%(name)s);\n' ' if (PyErr_Occurred())\n' ' return NULL;\n') def write_param(self, ptype, pname, pdflt, pnull, keeprefcount, info): if pdflt: info.varlist.add('GdkAtom', pname + ' = ' + pdflt) info.varlist.add('PyObject', '*py_' + pname + ' = NULL') info.codebefore.append(self.dflt % {'name': pname}) else: info.varlist.add('GdkAtom', pname) info.varlist.add('PyObject', '*py_' + pname + ' = NULL') info.codebefore.append(self.atom % {'name': pname}) info.arglist.append(pname) info.add_parselist('O', ['&py_' + pname], [pname]) def write_return(self, ptype, ownsreturn, info): info.varlist.add('GdkAtom', 'ret') info.varlist.add('PyObject *', 'py_ret') info.varlist.add('gchar *', 'name') info.codeafter.append(' name = gdk_atom_name(ret);\n' ' py_ret = PyString_FromString(name);\n' ' g_free(name);\n' ' return py_ret;') class GTypeArg(ArgType): gtype = (' if ((%(name)s = pyg_type_from_object(py_%(name)s)) == 0)\n' ' return NULL;\n') def write_param(self, ptype, pname, pdflt, pnull, keeprefcount, info): info.varlist.add('GType', pname) info.varlist.add('PyObject', '*py_' + pname + ' = NULL') info.codebefore.append(self.gtype % {'name': pname}) info.arglist.append(pname) info.add_parselist('O', ['&py_' + pname], [pname]) def write_return(self, ptype, ownsreturn, info): info.varlist.add('GType', 'ret') info.codeafter.append(' return pyg_type_wrapper_new(ret);') # simple GError handler. class GErrorArg(ArgType): handleerror = (' if (pyg_error_check(&%(name)s))\n' ' return NULL;\n') def write_param(self, ptype, pname, pdflt, pnull, keeprefcount, info): info.varlist.add('GError', '*' + pname + ' = NULL') info.arglist.append('&' + pname) info.codeafter.append(self.handleerror % { 'name': pname }) class GtkTreePathArg(ArgType): # haven't done support for default args. Is it needed? normal = (' %(name)s = pygtk_tree_path_from_pyobject(py_%(name)s);\n' ' if (!%(name)s) {\n' ' PyErr_SetString(PyExc_TypeError, "could not convert %(name)s to a GtkTreePath");\n' ' return NULL;\n' ' }\n') null = (' if (py_%(name)s != Py_None) {\n' ' %(name)s = pygtk_tree_path_from_pyobject(py_%(name)s);\n' ' if (!%(name)s) {\n' ' PyErr_SetString(PyExc_TypeError, "could not convert %(name)s to a GtkTreePath");\n' ' return NULL;\n' ' }\n' ' }\n') freepath = (' if (%(name)s)\n' ' gtk_tree_path_free(%(name)s);\n') def __init__(self): pass def write_param(self, ptype, pname, pdflt, pnull, keeprefcount, info): if pnull: info.varlist.add('GtkTreePath', '*' + pname + ' = NULL') info.varlist.add('PyObject', '*py_' + pname + ' = Py_None') info.codebefore.append(self.null % {'name': pname}) info.arglist.append(pname) info.add_parselist('O', ['&py_' + pname], [pname]) else: info.varlist.add('GtkTreePath', '*' + pname) info.varlist.add('PyObject', '*py_' + pname) info.codebefore.append(self.normal % {'name': pname}) info.arglist.append(pname) info.add_parselist('O', ['&py_' + pname], [pname]) info.codeafter.append(self.freepath % {'name': pname}) def write_return(self, ptype, ownsreturn, info): info.varlist.add('GtkTreePath', '*ret') if ownsreturn: info.codeafter.append(' if (ret) {\n' ' PyObject *py_ret = pygtk_tree_path_to_pyobject(ret);\n' ' gtk_tree_path_free(ret);\n' ' return py_ret;\n' ' }\n' ' Py_INCREF(Py_None);\n' ' return Py_None;') else: info.codeafter.append(' if (ret) {\n' ' PyObject *py_ret = pygtk_tree_path_to_pyobject(ret);\n' ' return py_ret;\n' ' }\n' ' Py_INCREF(Py_None);\n' ' return Py_None;') class GdkRectanglePtrArg(ArgType): normal = (' if (!pygdk_rectangle_from_pyobject(py_%(name)s, &%(name)s))\n' ' return NULL;\n') null = (' if (py_%(name)s == Py_None)\n' ' %(name)s = NULL;\n' ' else if (pygdk_rectangle_from_pyobject(py_%(name)s, &%(name)s_rect))\n' ' %(name)s = &%(name)s_rect;\n' ' else\n' ' return NULL;\n') def write_param(self, ptype, pname, pdflt, pnull, keeprefcount, info): if pnull: info.varlist.add('GdkRectangle', pname + '_rect = { 0, 0, 0, 0 }') info.varlist.add('GdkRectangle', '*' + pname) info.varlist.add('PyObject', '*py_' + pname + ' = Py_None') info.add_parselist('O', ['&py_' + pname], [pname]) info.arglist.append(pname) info.codebefore.append(self.null % {'name': pname}) else: info.varlist.add('GdkRectangle', pname + ' = { 0, 0, 0, 0 }') info.varlist.add('PyObject', '*py_' + pname) info.add_parselist('O', ['&py_' + pname], [pname]) info.arglist.append('&' + pname) info.codebefore.append(self.normal % {'name': pname}) class GdkRectangleArg(ArgType): def write_return(self, ptype, ownsreturn, info): info.varlist.add('GdkRectangle', 'ret') info.codeafter.append(' return pyg_boxed_new(GDK_TYPE_RECTANGLE, &ret, TRUE, TRUE);') class PyObjectArg(ArgType): def write_param(self, ptype, pname, pdflt, pnull, keeprefcount, info): info.varlist.add('PyObject', '*' + pname) info.add_parselist('O', ['&' + pname], [pname]) info.arglist.append(pname) def write_return(self, ptype, ownsreturn, info): info.varlist.add("PyObject", "*ret") if ownsreturn: info.codeafter.append(' if (ret) {\n' ' return ret;\n' ' }\n' ' Py_INCREF(Py_None);\n' ' return Py_None;') else: info.codeafter.append(' if (!ret) ret = Py_None;\n' ' Py_INCREF(ret);\n' ' return ret;') class ArgMatcher: def __init__(self): self.argtypes = {} self.reverse_argtypes = {} self.reverse_rettypes = {} def register(self, ptype, handler): self.argtypes[ptype] = handler def register_reverse(self, ptype, handler): self.reverse_argtypes[ptype] = handler def register_reverse_ret(self, ptype, handler): self.reverse_rettypes[ptype] = handler def register_enum(self, ptype, typecode): if typecode is None: typecode = "G_TYPE_NONE" self.register(ptype, EnumArg(ptype, typecode)) def register_flag(self, ptype, typecode): if typecode is None: typecode = "G_TYPE_NONE" self.register(ptype, FlagsArg(ptype, typecode)) def register_object(self, ptype, parent, typecode): oa = ObjectArg(ptype, parent, typecode) self.register(ptype, oa) # in case I forget the * in the .defs self.register(ptype+'*', oa) self.register('const-'+ptype+'*', oa) if ptype == 'GdkPixmap': # hack to handle GdkBitmap synonym. self.register('GdkBitmap', oa) self.register('GdkBitmap*', oa) def register_miniobject(self, ptype, parent, typecode): oa = MiniObjectArg(ptype, parent, typecode) self.register(ptype, oa) # in case I forget the * in the .defs self.register(ptype+'*', oa) def register_boxed(self, ptype, typecode): if self.argtypes.has_key(ptype): return arg = BoxedArg(ptype, typecode) self.register(ptype, arg) self.register(ptype+'*', arg) self.register('const-'+ptype+'*', arg) def register_custom_boxed(self, ptype, pytype, getter, new): arg = CustomBoxedArg(ptype, pytype, getter, new) self.register(ptype+'*', arg) self.register('const-'+ptype+'*', arg) def register_pointer(self, ptype, typecode): arg = PointerArg(ptype, typecode) self.register(ptype, arg) self.register(ptype+'*', arg) self.register('const-'+ptype+'*', arg) def get(self, ptype): try: return self.argtypes[ptype] except KeyError: if ptype[:8] == 'GdkEvent' and ptype[-1] == '*': return self.argtypes['GdkEvent*'] raise def _get_reverse_common(self, ptype, registry): props = dict(c_type=ptype) try: return registry[ptype], props except KeyError: try: handler = self.argtypes[ptype] except KeyError: if ptype.startswith('GdkEvent') and ptype.endswith('*'): handler = self.argtypes['GdkEvent*'] else: raise if isinstance(handler, ObjectArg): return registry['GObject*'], props elif isinstance(handler, EnumArg): props['typecode'] = handler.typecode props['enumname'] = handler.enumname return registry['GEnum'], props elif isinstance(handler, FlagsArg): props['typecode'] = handler.typecode props['flagname'] = handler.flagname return registry['GFlags'], props elif isinstance(handler, BoxedArg): props['typecode'] = handler.typecode props['typename'] = handler.typename return registry['GBoxed'], props else: raise def get_reverse(self, ptype): return self._get_reverse_common(ptype, self.reverse_argtypes) def get_reverse_ret(self, ptype): return self._get_reverse_common(ptype, self.reverse_rettypes) def object_is_a(self, otype, parent): if otype == None: return 0 if otype == parent: return 1 if not self.argtypes.has_key(otype): return 0 return self.object_is_a(self.get(otype).parent, parent) class GstIteratorArg(ArgType): def write_return(self, ptype, ownsreturn, info): info.varlist.add('GstIterator', '*ret') info.codeafter.append(' return pygst_iterator_new(ret);') matcher = ArgMatcher() arg = NoneArg() matcher.register(None, arg) matcher.register('none', arg) arg = StringArg() matcher.register('char*', arg) matcher.register('gchar*', arg) matcher.register('const-char*', arg) matcher.register('char-const*', arg) matcher.register('const-gchar*', arg) matcher.register('gchar-const*', arg) matcher.register('string', arg) matcher.register('static_string', arg) arg = UCharArg() matcher.register('unsigned-char*', arg) matcher.register('const-guchar*', arg) matcher.register('guchar*', arg) arg = CharArg() matcher.register('char', arg) matcher.register('gchar', arg) matcher.register('guchar', arg) arg = GUniCharArg() matcher.register('gunichar', arg) arg = IntArg() matcher.register('int', arg) matcher.register('gint', arg) matcher.register('short', arg) matcher.register('gshort', arg) matcher.register('gushort', arg) matcher.register('gsize', SizeArg()) matcher.register('gssize', SSizeArg()) matcher.register('guint8', arg) matcher.register('gint8', arg) matcher.register('guint16', arg) matcher.register('gint16', arg) matcher.register('gint32', arg) matcher.register('GTime', arg) arg = LongArg() matcher.register('long', arg) matcher.register('glong', arg) arg = UIntArg() matcher.register('guint', arg) arg = BoolArg() matcher.register('gboolean', arg) arg = TimeTArg() matcher.register('time_t', arg) matcher.register('guint32', UInt32Arg()) arg = ULongArg() matcher.register('gulong', arg) arg = Int64Arg() matcher.register('gint64', arg) matcher.register('long-long', arg) arg = UInt64Arg() matcher.register('guint64', arg) matcher.register('unsigned-long-long', arg) arg = DoubleArg() matcher.register('double', arg) matcher.register('gdouble', arg) matcher.register('float', arg) matcher.register('gfloat', arg) arg = FileArg() matcher.register('FILE*', arg) matcher.register('GstIterator*', GstIteratorArg()) # enums, flags, objects matcher.register('GdkAtom', AtomArg()) matcher.register('GType', GTypeArg()) matcher.register('GtkType', GTypeArg()) matcher.register('GError**', GErrorArg()) matcher.register('GtkTreePath*', GtkTreePathArg()) matcher.register('GdkRectangle*', GdkRectanglePtrArg()) matcher.register('GtkAllocation*', GdkRectanglePtrArg()) matcher.register('GdkRectangle', GdkRectangleArg()) matcher.register('PyObject*', PyObjectArg()) matcher.register('GdkNativeWindow', ULongArg()) matcher.register_object('GObject', None, 'G_TYPE_OBJECT') matcher.register_miniobject('GstMiniObject', None, 'GST_TYPE_MINI_OBJECT') del arg