mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-07-24 11:44:31 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 8

Added PEP253 support.

Browse source
This commit is contained in:
Jack Jansen 2002-12-03 23:35:22 +00:00
parent 6eadc6cf7e
commit 99899b92b8
1 changed files with 114 additions and 11 deletions
Download patch file Download diff file Expand all files Collapse all files

125
Tools/bgen/bgen/bgenObjectDefinition.py
View file

@ -4,6 +4,8 @@ from bgenGeneratorGroup import GeneratorGroup
class ObjectDefinition(GeneratorGroup):
"Spit out code that together defines a new Python object type"
basechain = "NULL"
tp_flags = "Py_TPFLAGS_DEFAULT"
basetype = None
def __init__(self, name, prefix, itselftype):
"""ObjectDefinition constructor. May be extended, but do not override.
@ -45,7 +47,11 @@ class ObjectDefinition(GeneratorGroup):
sf = self.static and "static "
Output("%sPyTypeObject %s;", sf, self.typename)
Output()
Output("#define %s_Check(x) ((x)->ob_type == &%s)",
if self.basetype:
Output("#define %s_Check(x) ((x)->ob_type == &%s || PyObject_TypeCheck((x), %s)",
self.prefix, self.typename, self.typename)
else:
Output("#define %s_Check(x) ((x)->ob_type == &%s)",
self.prefix, self.typename)
Output()
Output("typedef struct %s {", self.objecttype)
@ -76,6 +82,8 @@ class ObjectDefinition(GeneratorGroup):
self.outputHash()
self.outputPEP253Hooks()
self.outputTypeObject()
OutHeader2("End object type " + self.name)
@ -96,6 +104,8 @@ class ObjectDefinition(GeneratorGroup):
self.outputCheckNewArg()
Output("it = PyObject_NEW(%s, &%s);", self.objecttype, self.typename)
Output("if (it == NULL) return NULL;")
if self.basetype:
Output("/* XXXX Should we tp_init or tp_new our basetype? */")
self.outputInitStructMembers()
Output("return (PyObject *)it;")
OutRbrace()
@ -128,7 +138,10 @@ class ObjectDefinition(GeneratorGroup):
Output("static void %s_dealloc(%s *self)", self.prefix, self.objecttype)
OutLbrace()
self.outputCleanupStructMembers()
Output("PyObject_Del(self);")
if self.basetype:
Output("%s.tp_dealloc(self)", self.basetype)
else:
Output("PyObject_Del(self);")
OutRbrace()
def outputCleanupStructMembers(self):
@ -197,14 +210,17 @@ class ObjectDefinition(GeneratorGroup):
def outputTypeObjectInitializer(self):
Output("""%s.ob_type = &PyType_Type;""", self.typename);
if self.basetype:
Output("%s.tp_base = %s;", self.typename, self.basetype)
Output("""Py_INCREF(&%s);""", self.typename)
Output("PyModule_AddObject(m, \"%s\", (PyObject *)&%s);", self.name, self.typename);
Output("/* Backward-compatible name */")
Output("""Py_INCREF(&%s);""", self.typename);
Output("""if (PyDict_SetItemString(d, "%sType", (PyObject *)&%s) != 0)""",
self.name, self.typename);
IndentLevel()
Output("""Py_FatalError("can\'t initialize %sType");""",
self.name)
DedentLevel()
Output("PyModule_AddObject(m, \"%sType\", (PyObject *)&%s);", self.name, self.typename);
def outputPEP253Hooks(self):
pass
class PEP252Mixin:
getsetlist = []
@ -237,7 +253,7 @@ class PEP252Mixin:
func = getattr(self, methodname)
func()
else:
Output("0, /*%s*/", methodname)
Output("0, /*%s*/", name)
def outputTypeObject(self):
sf = self.static and "static "
@ -266,13 +282,13 @@ class PEP252Mixin:
Output("(PyMappingMethods *)0, /* tp_as_mapping */")
Output("(hashfunc) %s_hash, /*tp_hash*/", self.prefix)
Output("0, /*tp_call*/")
self.outputHook("tp_call")
Output("0, /*tp_str*/")
Output("PyObject_GenericGetAttr, /*tp_getattro*/")
Output("PyObject_GenericSetAttr, /*tp_setattro */")
self.outputHook("tp_as_buffer")
self.outputHook("tp_flags")
Output("%s, /* tp_flags */", self.tp_flags)
self.outputHook("tp_doc")
self.outputHook("tp_traverse")
self.outputHook("tp_clear")
@ -284,6 +300,14 @@ class PEP252Mixin:
self.outputHook("tp_members")
Output("%s_getsetlist, /*tp_getset*/", self.prefix)
self.outputHook("tp_base")
self.outputHook("tp_dict")
self.outputHook("tp_descr_get")
self.outputHook("tp_descr_set")
self.outputHook("tp_dictoffset")
self.outputHook("tp_init")
self.outputHook("tp_alloc")
self.outputHook("tp_new")
self.outputHook("tp_free")
DedentLevel()
Output("};")
@ -333,6 +357,85 @@ class PEP252Mixin:
Output("return 0;")
OutRbrace()
Output()
class PEP253Mixin(PEP252Mixin):
tp_flags = "Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE"
def outputHook_tp_init(self):
Output("%s_tp_init, /* tp_init */", self.prefix)
def outputHook_tp_alloc(self):
Output("%s_tp_alloc, /* tp_alloc */", self.prefix)
def outputHook_tp_new(self):
Output("%s_tp_new, /* tp_new */", self.prefix)
def outputHook_tp_free(self):
Output("%s_tp_free, /* tp_free */", self.prefix)
output_tp_initBody = None
def output_tp_init(self):
if self.output_tp_initBody:
Output("static int %s_init(PyObject *self, PyObject *args, PyObject *kwds)", self.prefix)
OutLbrace()
self.output_tp_initBody()
OutRbrace()
else:
Output("#define %s_tp_init 0", self.prefix)
Output()
output_tp_allocBody = None
def output_tp_alloc(self):
if self.output_tp_allocBody:
Output("static PyObject *%s_tp_alloc(PyTypeObject *type, int nitems)",
self.prefix)
OutLbrace()
self.output_tp_allocBody()
OutRbrace()
else:
Output("#define %s_tp_alloc PyType_GenericAlloc", self.prefix)
Output()
def output_tp_newBody(self):
Output("PyObject *self;");
Output("%s itself;", self.itselftype);
Output("char *kw[] = {\"itself\", 0};")
Output()
Output("if (!PyArg_ParseTupleAndKeywords(args, kwds, \"O&\", kw, %s_Convert, &itself)) return NULL;",
self.prefix);
Output("if ((self = type->tp_alloc(type, 0)) == NULL) return NULL;")
Output("((%s *)self)->ob_itself = itself;", self.objecttype)
Output("return self;")
def output_tp_new(self):
if self.output_tp_newBody:
Output("static PyObject *%s_tp_new(PyTypeObject *type, PyObject *args, PyObject *kwds)", self.prefix)
OutLbrace()
self.output_tp_newBody()
OutRbrace()
else:
Output("#define %s_tp_new PyType_GenericNew", self.prefix)
Output()
output_tp_freeBody = None
def output_tp_free(self):
if self.output_tp_freeBody:
Output("static void %s_tp_free(PyObject *self)", self.prefix)
OutLbrace()
self.output_tp_freeBody()
OutRbrace()
else:
Output("#define %s_tp_free PyObject_Del", self.prefix)
Output()
def outputPEP253Hooks(self):
self.output_tp_init()
self.output_tp_alloc()
self.output_tp_new()
self.output_tp_free()
class GlobalObjectDefinition(ObjectDefinition):
"""Like ObjectDefinition but exports some parts.