Issue #20173: Converted the _codecs module to Argument Clinic.

1 files changed, 629 insertions, 615 deletions

diff --git a/Modules/_codecsmodule.c b/Modules/_codecsmodule.c
index d8b4bbd..0e90f3c 100644
--- a/Modules/_codecsmodule.c
+++ b/Modules/_codecsmodule.c
@@ -51,16 +51,21 @@ module _codecs
 
 /* --- Registry ----------------------------------------------------------- */
 
-PyDoc_STRVAR(register__doc__,
-"register(search_function)\n\
-\n\
-Register a codec search function. Search functions are expected to take\n\
-one argument, the encoding name in all lower case letters, and either\n\
-return None, or a tuple of functions (encoder, decoder, stream_reader,\n\
-stream_writer) (or a CodecInfo object).");
+/*[clinic input]
+_codecs.register
+    search_function: object
+    /
 
-static
-PyObject *codec_register(PyObject *self, PyObject *search_function)
+Register a codec search function.
+
+Search functions are expected to take one argument, the encoding name in
+all lower case letters, and either return None, or a tuple of functions
+(encoder, decoder, stream_reader, stream_writer) (or a CodecInfo object).
+[clinic start generated code]*/
+
+static PyObject *
+_codecs_register(PyModuleDef *module, PyObject *search_function)
+/*[clinic end generated code: output=d17608b6ad380eb8 input=369578467955cae4]*/
 {
     if (PyCodec_Register(search_function))
         return NULL;
@@ -68,79 +73,73 @@ PyObject *codec_register(PyObject *self, PyObject *search_function)
     Py_RETURN_NONE;
 }
 
-PyDoc_STRVAR(lookup__doc__,
-"lookup(encoding) -> CodecInfo\n\
-\n\
-Looks up a codec tuple in the Python codec registry and returns\n\
-a CodecInfo object.");
-
-static
-PyObject *codec_lookup(PyObject *self, PyObject *args)
-{
-    char *encoding;
+/*[clinic input]
+_codecs.lookup
+    encoding: str
+    /
 
-    if (!PyArg_ParseTuple(args, "s:lookup", &encoding))
-        return NULL;
+Looks up a codec tuple in the Python codec registry and returns a CodecInfo object.
+[clinic start generated code]*/
 
+static PyObject *
+_codecs_lookup_impl(PyModuleDef *module, const char *encoding)
+/*[clinic end generated code: output=798e41aff0c04ef6 input=3c572c0db3febe9c]*/
+{
     return _PyCodec_Lookup(encoding);
 }
 
-PyDoc_STRVAR(encode__doc__,
-"encode(obj, [encoding[,errors]]) -> object\n\
-\n\
-Encodes obj using the codec registered for encoding. encoding defaults\n\
-to the default encoding. errors may be given to set a different error\n\
-handling scheme. Default is 'strict' meaning that encoding errors raise\n\
-a ValueError. Other possible values are 'ignore', 'replace' and\n\
-'xmlcharrefreplace' as well as any other name registered with\n\
-codecs.register_error that can handle ValueErrors.");
+/*[clinic input]
+_codecs.encode
+    obj: object
+    encoding: str(c_default="NULL") = sys.getdefaultencoding()
+    errors: str(c_default="NULL") = "strict"
+
+Encodes obj using the codec registered for encoding.
+
+encoding defaults to the default encoding.  errors may be given to set a
+different error handling scheme.  Default is 'strict' meaning that encoding
+errors raise a ValueError.  Other possible values are 'ignore', 'replace'
+and 'backslashreplace' as well as any other name registered with
+codecs.register_error that can handle ValueErrors.
+[clinic start generated code]*/
 
 static PyObject *
-codec_encode(PyObject *self, PyObject *args, PyObject *kwargs)
+_codecs_encode_impl(PyModuleDef *module, PyObject *obj, const char *encoding,
+                    const char *errors)
+/*[clinic end generated code: output=5c073f62249c8d7c input=2440d769df020a0e]*/
 {
-    static char *kwlist[] = {"obj", "encoding", "errors", NULL};
-    const char *encoding = NULL;
-    const char *errors = NULL;
-    PyObject *v;
-
-    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O|ss:encode", kwlist,
-                                     &v, &encoding, &errors))
-        return NULL;
-
     if (encoding == NULL)
         encoding = PyUnicode_GetDefaultEncoding();
 
     /* Encode via the codec registry */
-    return PyCodec_Encode(v, encoding, errors);
+    return PyCodec_Encode(obj, encoding, errors);
 }
 
-PyDoc_STRVAR(decode__doc__,
-"decode(obj, [encoding[,errors]]) -> object\n\
-\n\
-Decodes obj using the codec registered for encoding. encoding defaults\n\
-to the default encoding. errors may be given to set a different error\n\
-handling scheme. Default is 'strict' meaning that encoding errors raise\n\
-a ValueError. Other possible values are 'ignore' and 'replace'\n\
-as well as any other name registered with codecs.register_error that is\n\
-able to handle ValueErrors.");
+/*[clinic input]
+_codecs.decode
+    obj: object
+    encoding: str(c_default="NULL") = sys.getdefaultencoding()
+    errors: str(c_default="NULL") = "strict"
+
+Decodes obj using the codec registered for encoding.
+
+encoding defaults to the default encoding.  errors may be given to set a
+different error handling scheme.  Default is 'strict' meaning that encoding
+errors raise a ValueError.  Other possible values are 'ignore', 'replace'
+and 'backslashreplace' as well as any other name registered with
+codecs.register_error that can handle ValueErrors.
+[clinic start generated code]*/
 
 static PyObject *
-codec_decode(PyObject *self, PyObject *args, PyObject *kwargs)
+_codecs_decode_impl(PyModuleDef *module, PyObject *obj, const char *encoding,
+                    const char *errors)
+/*[clinic end generated code: output=c81cbf6189a7f878 input=a351e5f5baad1544]*/
 {
-    static char *kwlist[] = {"obj", "encoding", "errors", NULL};
-    const char *encoding = NULL;
-    const char *errors = NULL;
-    PyObject *v;
-
-    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O|ss:decode", kwlist,
-                                     &v, &encoding, &errors))
-        return NULL;
-
     if (encoding == NULL)
         encoding = PyUnicode_GetDefaultEncoding();
 
     /* Decode via the codec registry */
-    return PyCodec_Decode(v, encoding, errors);
+    return PyCodec_Decode(obj, encoding, errors);
 }
 
 /* --- Helpers ------------------------------------------------------------ */
@@ -165,51 +164,49 @@ _codecs__forget_codec_impl(PyModuleDef *module, const char *encoding)
 }
 
 static
-PyObject *codec_tuple(PyObject *unicode,
+PyObject *codec_tuple(PyObject *decoded,
                       Py_ssize_t len)
 {
-    PyObject *v;
-    if (unicode == NULL)
+    if (decoded == NULL)
         return NULL;
-    v = Py_BuildValue("On", unicode, len);
-    Py_DECREF(unicode);
-    return v;
+    return Py_BuildValue("Nn", decoded, len);
 }
 
 /* --- String codecs ------------------------------------------------------ */
+/*[clinic input]
+_codecs.escape_decode
+    data: Py_buffer(accept={str, buffer})
+    errors: str(accept={str, NoneType}) = NULL
+    /
+[clinic start generated code]*/
+
 static PyObject *
-escape_decode(PyObject *self,
-              PyObject *args)
+_codecs_escape_decode_impl(PyModuleDef *module, Py_buffer *data,
+                           const char *errors)
+/*[clinic end generated code: output=648fa3e78d03e658 input=0018edfd99db714d]*/
 {
-    Py_buffer pbuf;
-    const char *errors = NULL;
-    PyObject *result;
-
-    if (!PyArg_ParseTuple(args, "s*|z:escape_decode",
-                          &pbuf, &errors))
-        return NULL;
-    result = codec_tuple(
-            PyBytes_DecodeEscape(pbuf.buf, pbuf.len, errors, 0, NULL),
-            pbuf.len);
-    PyBuffer_Release(&pbuf);
-    return result;
+    PyObject *decoded = PyBytes_DecodeEscape(data->buf, data->len,
+                                             errors, 0, NULL);
+    return codec_tuple(decoded, data->len);
 }
 
+/*[clinic input]
+_codecs.escape_encode
+    data: object(subclass_of='&PyBytes_Type')
+    errors: str(accept={str, NoneType}) = NULL
+    /
+[clinic start generated code]*/
+
 static PyObject *
-escape_encode(PyObject *self,
-              PyObject *args)
+_codecs_escape_encode_impl(PyModuleDef *module, PyObject *data,
+                           const char *errors)
+/*[clinic end generated code: output=fcd6f34fe4111c50 input=da9ded00992f32f2]*/
 {
-    PyObject *str;
     Py_ssize_t size;
     Py_ssize_t newsize;
-    const char *errors = NULL;
     PyObject *v;
 
-    if (!PyArg_ParseTuple(args, "O!|z:escape_encode",
-                          &PyBytes_Type, &str, &errors))
-        return NULL;
-
-    size = PyBytes_GET_SIZE(str);
+    size = PyBytes_GET_SIZE(data);
     if (size > PY_SSIZE_T_MAX / 4) {
         PyErr_SetString(PyExc_OverflowError,
             "string is too large to encode");
@@ -229,7 +226,7 @@ escape_encode(PyObject *self,
         for (i = 0; i < size; i++) {
             /* There's at least enough room for a hex escape */
             assert(newsize - (p - PyBytes_AS_STRING(v)) >= 4);
-            c = PyBytes_AS_STRING(str)[i];
+            c = PyBytes_AS_STRING(data)[i];
             if (c == '\'' || c == '\\')
                 *p++ = '\\', *p++ = c;
             else if (c == '\t')
@@ -257,18 +254,18 @@ escape_encode(PyObject *self,
 }
 
 /* --- Decoder ------------------------------------------------------------ */
+/*[clinic input]
+_codecs.unicode_internal_decode
+    obj: object
+    errors: str(accept={str, NoneType}) = NULL
+    /
+[clinic start generated code]*/
 
 static PyObject *
-unicode_internal_decode(PyObject *self,
-                        PyObject *args)
+_codecs_unicode_internal_decode_impl(PyModuleDef *module, PyObject *obj,
+                                     const char *errors)
+/*[clinic end generated code: output=9fe47c2cd8807d92 input=8d57930aeda170c6]*/
 {
-    PyObject *obj;
-    const char *errors = NULL;
-
-    if (!PyArg_ParseTuple(args, "O|z:unicode_internal_decode",
-                          &obj, &errors))
-        return NULL;
-
     if (PyUnicode_Check(obj)) {
         if (PyUnicode_READY(obj) < 0)
             return NULL;
@@ -289,120 +286,109 @@ unicode_internal_decode(PyObject *self,
     }
 }
 
+/*[clinic input]
+_codecs.utf_7_decode
+    data: Py_buffer
+    errors: str(accept={str, NoneType}) = NULL
+    final: int(c_default="0") = False
+    /
+[clinic start generated code]*/
+
 static PyObject *
-utf_7_decode(PyObject *self,
-             PyObject *args)
+_codecs_utf_7_decode_impl(PyModuleDef *module, Py_buffer *data,
+                          const char *errors, int final)
+/*[clinic end generated code: output=ca945e907e72e827 input=bc4d6247ecdb01e6]*/
 {
-    Py_buffer pbuf;
-    const char *errors = NULL;
-    int final = 0;
-    Py_ssize_t consumed;
-    PyObject *decoded = NULL;
-
-    if (!PyArg_ParseTuple(args, "y*|zi:utf_7_decode",
-                          &pbuf, &errors, &final))
-        return NULL;
-    consumed = pbuf.len;
-
-    decoded = PyUnicode_DecodeUTF7Stateful(pbuf.buf, pbuf.len, errors,
-                                           final ? NULL : &consumed);
-    PyBuffer_Release(&pbuf);
-    if (decoded == NULL)
-        return NULL;
+    Py_ssize_t consumed = data->len;
+    PyObject *decoded = PyUnicode_DecodeUTF7Stateful(data->buf, data->len,
+                                                     errors,
+                                                     final ? NULL : &consumed);
     return codec_tuple(decoded, consumed);
 }
 
+/*[clinic input]
+_codecs.utf_8_decode
+    data: Py_buffer
+    errors: str(accept={str, NoneType}) = NULL
+    final: int(c_default="0") = False
+    /
+[clinic start generated code]*/
+
 static PyObject *
-utf_8_decode(PyObject *self,
-            PyObject *args)
+_codecs_utf_8_decode_impl(PyModuleDef *module, Py_buffer *data,
+                          const char *errors, int final)
+/*[clinic end generated code: output=7309f9ff4ef5c9b6 input=39161d71e7422ee2]*/
 {
-    Py_buffer pbuf;
-    const char *errors = NULL;
-    int final = 0;
-    Py_ssize_t consumed;
-    PyObject *decoded = NULL;
-
-    if (!PyArg_ParseTuple(args, "y*|zi:utf_8_decode",
-                          &pbuf, &errors, &final))
-        return NULL;
-    consumed = pbuf.len;
-
-    decoded = PyUnicode_DecodeUTF8Stateful(pbuf.buf, pbuf.len, errors,
-                                           final ? NULL : &consumed);
-    PyBuffer_Release(&pbuf);
-    if (decoded == NULL)
-        return NULL;
+    Py_ssize_t consumed = data->len;
+    PyObject *decoded = PyUnicode_DecodeUTF8Stateful(data->buf, data->len,
+                                                     errors,
+                                                     final ? NULL : &consumed);
     return codec_tuple(decoded, consumed);
 }
 
+/*[clinic input]
+_codecs.utf_16_decode
+    data: Py_buffer
+    errors: str(accept={str, NoneType}) = NULL
+    final: int(c_default="0") = False
+    /
+[clinic start generated code]*/
+
 static PyObject *
-utf_16_decode(PyObject *self,
-            PyObject *args)
+_codecs_utf_16_decode_impl(PyModuleDef *module, Py_buffer *data,
+                           const char *errors, int final)
+/*[clinic end generated code: output=8d2fa0507d9bef2c input=f3cf01d1461007ce]*/
 {
-    Py_buffer pbuf;
-    const char *errors = NULL;
     int byteorder = 0;
-    int final = 0;
-    Py_ssize_t consumed;
-    PyObject *decoded;
-
-    if (!PyArg_ParseTuple(args, "y*|zi:utf_16_decode",
-                          &pbuf, &errors, &final))
-        return NULL;
-    consumed = pbuf.len; /* This is overwritten unless final is true. */
-    decoded = PyUnicode_DecodeUTF16Stateful(pbuf.buf, pbuf.len, errors,
-                                        &byteorder, final ? NULL : &consumed);
-    PyBuffer_Release(&pbuf);
-    if (decoded == NULL)
-        return NULL;
+    /* This is overwritten unless final is true. */
+    Py_ssize_t consumed = data->len;
+    PyObject *decoded = PyUnicode_DecodeUTF16Stateful(data->buf, data->len,
+                                                      errors, &byteorder,
+                                                      final ? NULL : &consumed);
     return codec_tuple(decoded, consumed);
 }
 
+/*[clinic input]
+_codecs.utf_16_le_decode
+    data: Py_buffer
+    errors: str(accept={str, NoneType}) = NULL
+    final: int(c_default="0") = False
+    /
+[clinic start generated code]*/
+
 static PyObject *
-utf_16_le_decode(PyObject *self,
-                 PyObject *args)
+_codecs_utf_16_le_decode_impl(PyModuleDef *module, Py_buffer *data,
+                              const char *errors, int final)
+/*[clinic end generated code: output=4fd621515ef4ce18 input=a77e3bf97335d94e]*/
 {
-    Py_buffer pbuf;
-    const char *errors = NULL;
     int byteorder = -1;
-    int final = 0;
-    Py_ssize_t consumed;
-    PyObject *decoded = NULL;
-
-    if (!PyArg_ParseTuple(args, "y*|zi:utf_16_le_decode",
-                          &pbuf, &errors, &final))
-        return NULL;
-
-    consumed = pbuf.len; /* This is overwritten unless final is true. */
-    decoded = PyUnicode_DecodeUTF16Stateful(pbuf.buf, pbuf.len, errors,
-        &byteorder, final ? NULL : &consumed);
-    PyBuffer_Release(&pbuf);
-    if (decoded == NULL)
-        return NULL;
+    /* This is overwritten unless final is true. */
+    Py_ssize_t consumed = data->len;
+    PyObject *decoded = PyUnicode_DecodeUTF16Stateful(data->buf, data->len,
+                                                      errors, &byteorder,
+                                                      final ? NULL : &consumed);
     return codec_tuple(decoded, consumed);
 }
 
+/*[clinic input]
+_codecs.utf_16_be_decode
+    data: Py_buffer
+    errors: str(accept={str, NoneType}) = NULL
+    final: int(c_default="0") = False
+    /
+[clinic start generated code]*/
+
 static PyObject *
-utf_16_be_decode(PyObject *self,
-                 PyObject *args)
+_codecs_utf_16_be_decode_impl(PyModuleDef *module, Py_buffer *data,
+                              const char *errors, int final)
+/*[clinic end generated code: output=792f4eacb3e1fa05 input=606f69fae91b5563]*/
 {
-    Py_buffer pbuf;
-    const char *errors = NULL;
     int byteorder = 1;
-    int final = 0;
-    Py_ssize_t consumed;
-    PyObject *decoded = NULL;
-
-    if (!PyArg_ParseTuple(args, "y*|zi:utf_16_be_decode",
-                          &pbuf, &errors, &final))
-        return NULL;
-
-    consumed = pbuf.len; /* This is overwritten unless final is true. */
-    decoded = PyUnicode_DecodeUTF16Stateful(pbuf.buf, pbuf.len, errors,
-        &byteorder, final ? NULL : &consumed);
-    PyBuffer_Release(&pbuf);
-    if (decoded == NULL)
-        return NULL;
+    /* This is overwritten unless final is true. */
+    Py_ssize_t consumed = data->len;
+    PyObject *decoded = PyUnicode_DecodeUTF16Stateful(data->buf, data->len,
+                                                      errors, &byteorder,
+                                                      final ? NULL : &consumed);
     return codec_tuple(decoded, consumed);
 }
 
@@ -413,98 +399,94 @@ utf_16_be_decode(PyObject *self,
    being the value in effect at the end of data.
 
 */
+/*[clinic input]
+_codecs.utf_16_ex_decode
+    data: Py_buffer
+    errors: str(accept={str, NoneType}) = NULL
+    byteorder: int = 0
+    final: int(c_default="0") = False
+    /
+[clinic start generated code]*/
 
 static PyObject *
-utf_16_ex_decode(PyObject *self,
-                 PyObject *args)
+_codecs_utf_16_ex_decode_impl(PyModuleDef *module, Py_buffer *data,
+                              const char *errors, int byteorder, int final)
+/*[clinic end generated code: output=f136a186dc2defa0 input=f6e7f697658c013e]*/
 {
-    Py_buffer pbuf;
-    const char *errors = NULL;
-    int byteorder = 0;
-    PyObject *unicode, *tuple;
-    int final = 0;
-    Py_ssize_t consumed;
+    /* This is overwritten unless final is true. */
+    Py_ssize_t consumed = data->len;
 
-    if (!PyArg_ParseTuple(args, "y*|zii:utf_16_ex_decode",
-                          &pbuf, &errors, &byteorder, &final))
-        return NULL;
-    consumed = pbuf.len; /* This is overwritten unless final is true. */
-    unicode = PyUnicode_DecodeUTF16Stateful(pbuf.buf, pbuf.len, errors,
-                                        &byteorder, final ? NULL : &consumed);
-    PyBuffer_Release(&pbuf);
-    if (unicode == NULL)
+    PyObject *decoded = PyUnicode_DecodeUTF16Stateful(data->buf, data->len,
+                                                      errors, &byteorder,
+                                                      final ? NULL : &consumed);
+    if (decoded == NULL)
         return NULL;
-    tuple = Py_BuildValue("Oni", unicode, consumed, byteorder);
-    Py_DECREF(unicode);
-    return tuple;
+    return Py_BuildValue("Nni", decoded, consumed, byteorder);
 }
 
+/*[clinic input]
+_codecs.utf_32_decode
+    data: Py_buffer
+    errors: str(accept={str, NoneType}) = NULL
+    final: int(c_default="0") = False
+    /
+[clinic start generated code]*/
+
 static PyObject *
-utf_32_decode(PyObject *self,
-            PyObject *args)
+_codecs_utf_32_decode_impl(PyModuleDef *module, Py_buffer *data,
+                           const char *errors, int final)
+/*[clinic end generated code: output=b7635e55857e8efb input=86d4f41c6c2e763d]*/
 {
-    Py_buffer pbuf;
-    const char *errors = NULL;
     int byteorder = 0;
-    int final = 0;
-    Py_ssize_t consumed;
-    PyObject *decoded;
-
-    if (!PyArg_ParseTuple(args, "y*|zi:utf_32_decode",
-                          &pbuf, &errors, &final))
-        return NULL;
-    consumed = pbuf.len; /* This is overwritten unless final is true. */
-    decoded = PyUnicode_DecodeUTF32Stateful(pbuf.buf, pbuf.len, errors,
-                                        &byteorder, final ? NULL : &consumed);
-    PyBuffer_Release(&pbuf);
-    if (decoded == NULL)
-        return NULL;
+    /* This is overwritten unless final is true. */
+    Py_ssize_t consumed = data->len;
+    PyObject *decoded = PyUnicode_DecodeUTF32Stateful(data->buf, data->len,
+                                                      errors, &byteorder,
+                                                      final ? NULL : &consumed);
     return codec_tuple(decoded, consumed);
 }
 
+/*[clinic input]
+_codecs.utf_32_le_decode
+    data: Py_buffer
+    errors: str(accept={str, NoneType}) = NULL
+    final: int(c_default="0") = False
+    /
+[clinic start generated code]*/
+
 static PyObject *
-utf_32_le_decode(PyObject *self,
-                 PyObject *args)
+_codecs_utf_32_le_decode_impl(PyModuleDef *module, Py_buffer *data,
+                              const char *errors, int final)
+/*[clinic end generated code: output=a79d1787d8ddf988 input=d18b650772d188ba]*/
 {
-    Py_buffer pbuf;
-    const char *errors = NULL;
     int byteorder = -1;
-    int final = 0;
-    Py_ssize_t consumed;
-    PyObject *decoded;
-
-    if (!PyArg_ParseTuple(args, "y*|zi:utf_32_le_decode",
-                          &pbuf, &errors, &final))
-        return NULL;
-    consumed = pbuf.len; /* This is overwritten unless final is true. */
-    decoded = PyUnicode_DecodeUTF32Stateful(pbuf.buf, pbuf.len, errors,
-                                        &byteorder, final ? NULL : &consumed);
-    PyBuffer_Release(&pbuf);
-    if (decoded == NULL)
-        return NULL;
+    /* This is overwritten unless final is true. */
+    Py_ssize_t consumed = data->len;
+    PyObject *decoded = PyUnicode_DecodeUTF32Stateful(data->buf, data->len,
+                                                      errors, &byteorder,
+                                                      final ? NULL : &consumed);
     return codec_tuple(decoded, consumed);
 }
 
+/*[clinic input]
+_codecs.utf_32_be_decode
+    data: Py_buffer
+    errors: str(accept={str, NoneType}) = NULL
+    final: int(c_default="0") = False
+    /
+[clinic start generated code]*/
+
 static PyObject *
-utf_32_be_decode(PyObject *self,
-                 PyObject *args)
+_codecs_utf_32_be_decode_impl(PyModuleDef *module, Py_buffer *data,
+                              const char *errors, int final)
+/*[clinic end generated code: output=a8356b0f36779981 input=19c271b5d34926d8]*/
 {
-    Py_buffer pbuf;
-    const char *errors = NULL;
     int byteorder = 1;
-    int final = 0;
-    Py_ssize_t consumed;
-    PyObject *decoded;
-
-    if (!PyArg_ParseTuple(args, "y*|zi:utf_32_be_decode",
-                          &pbuf, &errors, &final))
-        return NULL;
-    consumed = pbuf.len; /* This is overwritten unless final is true. */
-    decoded = PyUnicode_DecodeUTF32Stateful(pbuf.buf, pbuf.len, errors,
-                                        &byteorder, final ? NULL : &consumed);
-    PyBuffer_Release(&pbuf);
-    if (decoded == NULL)
-        return NULL;
+    /* This is overwritten unless final is true. */
+    Py_ssize_t consumed = data->len;
+    PyObject *decoded = PyUnicode_DecodeUTF32Stateful(data->buf, data->len,
+                                                      errors, &byteorder,
+                                                      final ? NULL : &consumed);
     return codec_tuple(decoded, consumed);
 }
 
@@ -515,167 +497,157 @@ utf_32_be_decode(PyObject *self,
    being the value in effect at the end of data.
 
 */
+/*[clinic input]
+_codecs.utf_32_ex_decode
+    data: Py_buffer
+    errors: str(accept={str, NoneType}) = NULL
+    byteorder: int = 0
+    final: int(c_default="0") = False
+    /
+[clinic start generated code]*/
 
 static PyObject *
-utf_32_ex_decode(PyObject *self,
-                 PyObject *args)
+_codecs_utf_32_ex_decode_impl(PyModuleDef *module, Py_buffer *data,
+                              const char *errors, int byteorder, int final)
+/*[clinic end generated code: output=ab8c70977c1992f5 input=4af3e6ccfe34a076]*/
 {
-    Py_buffer pbuf;
-    const char *errors = NULL;
-    int byteorder = 0;
-    PyObject *unicode, *tuple;
-    int final = 0;
-    Py_ssize_t consumed;
-
-    if (!PyArg_ParseTuple(args, "y*|zii:utf_32_ex_decode",
-                          &pbuf, &errors, &byteorder, &final))
-        return NULL;
-    consumed = pbuf.len; /* This is overwritten unless final is true. */
-    unicode = PyUnicode_DecodeUTF32Stateful(pbuf.buf, pbuf.len, errors,
-                                        &byteorder, final ? NULL : &consumed);
-    PyBuffer_Release(&pbuf);
-    if (unicode == NULL)
+    Py_ssize_t consumed = data->len;
+    PyObject *decoded = PyUnicode_DecodeUTF32Stateful(data->buf, data->len,
+                                                      errors, &byteorder,
+                                                      final ? NULL : &consumed);
+    if (decoded == NULL)
         return NULL;
-    tuple = Py_BuildValue("Oni", unicode, consumed, byteorder);
-    Py_DECREF(unicode);
-    return tuple;
+    return Py_BuildValue("Nni", decoded, consumed, byteorder);
 }
 
+/*[clinic input]
+_codecs.unicode_escape_decode
+    data: Py_buffer(accept={str, buffer})
+    errors: str(accept={str, NoneType}) = NULL
+    /
+[clinic start generated code]*/
+
 static PyObject *
-unicode_escape_decode(PyObject *self,
-                     PyObject *args)
+_codecs_unicode_escape_decode_impl(PyModuleDef *module, Py_buffer *data,
+                                   const char *errors)
+/*[clinic end generated code: output=d1aa63f2620c4999 input=49fd27d06813a7f5]*/
 {
-    Py_buffer pbuf;
-    const char *errors = NULL;
-        PyObject *unicode;
-
-    if (!PyArg_ParseTuple(args, "s*|z:unicode_escape_decode",
-                          &pbuf, &errors))
-        return NULL;
-
-    unicode = PyUnicode_DecodeUnicodeEscape(pbuf.buf, pbuf.len, errors);
-    PyBuffer_Release(&pbuf);
-    return codec_tuple(unicode, pbuf.len);
+    PyObject *decoded = PyUnicode_DecodeUnicodeEscape(data->buf, data->len,
+                                                      errors);
+    return codec_tuple(decoded, data->len);
 }
 
+/*[clinic input]
+_codecs.raw_unicode_escape_decode
+    data: Py_buffer(accept={str, buffer})
+    errors: str(accept={str, NoneType}) = NULL
+    /
+[clinic start generated code]*/
+
 static PyObject *
-raw_unicode_escape_decode(PyObject *self,
-                        PyObject *args)
+_codecs_raw_unicode_escape_decode_impl(PyModuleDef *module, Py_buffer *data,
+                                       const char *errors)
+/*[clinic end generated code: output=0bf96cc182d81379 input=770903a211434ebc]*/
 {
-    Py_buffer pbuf;
-    const char *errors = NULL;
-    PyObject *unicode;
-
-    if (!PyArg_ParseTuple(args, "s*|z:raw_unicode_escape_decode",
-                          &pbuf, &errors))
-        return NULL;
-
-    unicode = PyUnicode_DecodeRawUnicodeEscape(pbuf.buf, pbuf.len, errors);
-    PyBuffer_Release(&pbuf);
-    return codec_tuple(unicode, pbuf.len);
+    PyObject *decoded = PyUnicode_DecodeRawUnicodeEscape(data->buf, data->len,
+                                                         errors);
+    return codec_tuple(decoded, data->len);
 }
 
+/*[clinic input]
+_codecs.latin_1_decode
+    data: Py_buffer
+    errors: str(accept={str, NoneType}) = NULL
+    /
+[clinic start generated code]*/
+
 static PyObject *
-latin_1_decode(PyObject *self,
-               PyObject *args)
+_codecs_latin_1_decode_impl(PyModuleDef *module, Py_buffer *data,
+                            const char *errors)
+/*[clinic end generated code: output=66b916f5055aaf13 input=5cad0f1759c618ec]*/
 {
-    Py_buffer pbuf;
-    PyObject *unicode;
-    const char *errors = NULL;
-
-    if (!PyArg_ParseTuple(args, "y*|z:latin_1_decode",
-                          &pbuf, &errors))
-        return NULL;
-
-    unicode = PyUnicode_DecodeLatin1(pbuf.buf, pbuf.len, errors);
-    PyBuffer_Release(&pbuf);
-    return codec_tuple(unicode, pbuf.len);
+    PyObject *decoded = PyUnicode_DecodeLatin1(data->buf, data->len, errors);
+    return codec_tuple(decoded, data->len);
 }
 
+/*[clinic input]
+_codecs.ascii_decode
+    data: Py_buffer
+    errors: str(accept={str, NoneType}) = NULL
+    /
+[clinic start generated code]*/
+
 static PyObject *
-ascii_decode(PyObject *self,
-             PyObject *args)
+_codecs_ascii_decode_impl(PyModuleDef *module, Py_buffer *data,
+                          const char *errors)
+/*[clinic end generated code: output=7f213a1b5cdafc65 input=ad1106f64037bd16]*/
 {
-    Py_buffer pbuf;
-    PyObject *unicode;
-    const char *errors = NULL;
-
-    if (!PyArg_ParseTuple(args, "y*|z:ascii_decode",
-                          &pbuf, &errors))
-        return NULL;
-
-    unicode = PyUnicode_DecodeASCII(pbuf.buf, pbuf.len, errors);
-    PyBuffer_Release(&pbuf);
-    return codec_tuple(unicode, pbuf.len);
+    PyObject *decoded = PyUnicode_DecodeASCII(data->buf, data->len, errors);
+    return codec_tuple(decoded, data->len);
 }
 
+/*[clinic input]
+_codecs.charmap_decode
+    data: Py_buffer
+    errors: str(accept={str, NoneType}) = NULL
+    mapping: object = NULL
+    /
+[clinic start generated code]*/
+
 static PyObject *
-charmap_decode(PyObject *self,
-               PyObject *args)
+_codecs_charmap_decode_impl(PyModuleDef *module, Py_buffer *data,
+                            const char *errors, PyObject *mapping)
+/*[clinic end generated code: output=87d27f365098bbae input=19712ca35c5a80e2]*/
 {
-    Py_buffer pbuf;
-    PyObject *unicode;
-    const char *errors = NULL;
-    PyObject *mapping = NULL;
+    PyObject *decoded;
 
-    if (!PyArg_ParseTuple(args, "y*|zO:charmap_decode",
-                          &pbuf, &errors, &mapping))
-        return NULL;
     if (mapping == Py_None)
         mapping = NULL;
 
-    unicode = PyUnicode_DecodeCharmap(pbuf.buf, pbuf.len, mapping, errors);
-    PyBuffer_Release(&pbuf);
-    return codec_tuple(unicode, pbuf.len);
+    decoded = PyUnicode_DecodeCharmap(data->buf, data->len, mapping, errors);
+    return codec_tuple(decoded, data->len);
 }
 
 #ifdef HAVE_MBCS
 
+/*[clinic input]
+_codecs.mbcs_decode
+    data: Py_buffer
+    errors: str(accept={str, NoneType}) = NULL
+    final: int(c_default="0") = False
+    /
+[clinic start generated code]*/
+
 static PyObject *
-mbcs_decode(PyObject *self,
-            PyObject *args)
+_codecs_mbcs_decode_impl(PyModuleDef *module, Py_buffer *data,
+                         const char *errors, int final)
+/*[clinic end generated code: output=0ebaf3a5b20e53fa input=d492c1ca64f4fa8a]*/
 {
-    Py_buffer pbuf;
-    const char *errors = NULL;
-    int final = 0;
-    Py_ssize_t consumed;
-    PyObject *decoded = NULL;
-
-    if (!PyArg_ParseTuple(args, "y*|zi:mbcs_decode",
-                          &pbuf, &errors, &final))
-        return NULL;
-    consumed = pbuf.len;
-
-    decoded = PyUnicode_DecodeMBCSStateful(pbuf.buf, pbuf.len, errors,
-                                           final ? NULL : &consumed);
-    PyBuffer_Release(&pbuf);
-    if (decoded == NULL)
-        return NULL;
+    Py_ssize_t consumed = data->len;
+    PyObject *decoded = PyUnicode_DecodeMBCSStateful(data->buf, data->len,
+            errors, final ? NULL : &consumed);
     return codec_tuple(decoded, consumed);
 }
 
+/*[clinic input]
+_codecs.code_page_decode
+    codepage: int
+    data: Py_buffer
+    errors: str(accept={str, NoneType}) = NULL
+    final: int(c_default="0") = False
+    /
+[clinic start generated code]*/
+
 static PyObject *
-code_page_decode(PyObject *self,
-                 PyObject *args)
+_codecs_code_page_decode_impl(PyModuleDef *module, int codepage,
+                              Py_buffer *data, const char *errors, int final)
+/*[clinic end generated code: output=4318e3d9971e31ba input=4f3152a304e21d51]*/
 {
-    Py_buffer pbuf;
-    const char *errors = NULL;
-    int final = 0;
-    Py_ssize_t consumed;
-    PyObject *decoded = NULL;
-    int code_page;
-
-    if (!PyArg_ParseTuple(args, "iy*|zi:code_page_decode",
-                          &code_page, &pbuf, &errors, &final))
-        return NULL;
-    consumed = pbuf.len;
-
-    decoded = PyUnicode_DecodeCodePageStateful(code_page,
-                                               pbuf.buf, pbuf.len, errors,
-                                               final ? NULL : &consumed);
-    PyBuffer_Release(&pbuf);
-    if (decoded == NULL)
-        return NULL;
+    Py_ssize_t consumed = data->len;
+    PyObject *decoded = PyUnicode_DecodeCodePageStateful(code_page,
+                                                         data->buf, data->len,
+                                                         errors,
+                                                         final ? NULL : &consumed);
     return codec_tuple(decoded, consumed);
 }
 
@@ -683,43 +655,39 @@ code_page_decode(PyObject *self,
 
 /* --- Encoder ------------------------------------------------------------ */
 
+/*[clinic input]
+_codecs.readbuffer_encode
+    data: Py_buffer(accept={str, buffer})
+    errors: str(accept={str, NoneType}) = NULL
+    /
+[clinic start generated code]*/
+
 static PyObject *
-readbuffer_encode(PyObject *self,
-                  PyObject *args)
+_codecs_readbuffer_encode_impl(PyModuleDef *module, Py_buffer *data,
+                               const char *errors)
+/*[clinic end generated code: output=319cc24083299859 input=b7c322b89d4ab923]*/
 {
-    Py_buffer pdata;
-    const char *data;
-    Py_ssize_t size;
-    const char *errors = NULL;
-    PyObject *result;
-
-    if (!PyArg_ParseTuple(args, "s*|z:readbuffer_encode",
-                          &pdata, &errors))
-        return NULL;
-    data = pdata.buf;
-    size = pdata.len;
-
-    result = PyBytes_FromStringAndSize(data, size);
-    PyBuffer_Release(&pdata);
-    return codec_tuple(result, size);
+    PyObject *result = PyBytes_FromStringAndSize(data->buf, data->len);
+    return codec_tuple(result, data->len);
 }
 
+/*[clinic input]
+_codecs.unicode_internal_encode
+    obj: object
+    errors: str(accept={str, NoneType}) = NULL
+    /
+[clinic start generated code]*/
+
 static PyObject *
-unicode_internal_encode(PyObject *self,
-                        PyObject *args)
+_codecs_unicode_internal_encode_impl(PyModuleDef *module, PyObject *obj,
+                                     const char *errors)
+/*[clinic end generated code: output=be08457068ad503b input=8628f0280cf5ba61]*/
 {
-    PyObject *obj;
-    const char *errors = NULL;
-
     if (PyErr_WarnEx(PyExc_DeprecationWarning,
                      "unicode_internal codec has been deprecated",
                      1))
         return NULL;
 
-    if (!PyArg_ParseTuple(args, "O|z:unicode_internal_encode",
-                          &obj, &errors))
-        return NULL;
-
     if (PyUnicode_Check(obj)) {
         Py_UNICODE *u;
         Py_ssize_t len, size;
@@ -741,22 +709,26 @@ unicode_internal_encode(PyObject *self,
         PyObject *result;
         if (PyObject_GetBuffer(obj, &view, PyBUF_SIMPLE) != 0)
             return NULL;
-        result = codec_tuple(PyBytes_FromStringAndSize(view.buf, view.len), view.len);
+        result = codec_tuple(PyBytes_FromStringAndSize(view.buf, view.len),
+                             view.len);
         PyBuffer_Release(&view);
         return result;
     }
 }
 
+/*[clinic input]
+_codecs.utf_7_encode
+    str: object
+    errors: str(accept={str, NoneType}) = NULL
+    /
+[clinic start generated code]*/
+
 static PyObject *
-utf_7_encode(PyObject *self,
-            PyObject *args)
+_codecs_utf_7_encode_impl(PyModuleDef *module, PyObject *str,
+                          const char *errors)
+/*[clinic end generated code: output=a7accc496a32b759 input=fd91a78f103b0421]*/
 {
-    PyObject *str, *v;
-    const char *errors = NULL;
-
-    if (!PyArg_ParseTuple(args, "O|z:utf_7_encode",
-                          &str, &errors))
-        return NULL;
+    PyObject *v;
 
     str = PyUnicode_FromObject(str);
     if (str == NULL || PyUnicode_READY(str) < 0) {
@@ -769,16 +741,19 @@ utf_7_encode(PyObject *self,
     return v;
 }
 
+/*[clinic input]
+_codecs.utf_8_encode
+    str: object
+    errors: str(accept={str, NoneType}) = NULL
+    /
+[clinic start generated code]*/
+
 static PyObject *
-utf_8_encode(PyObject *self,
-            PyObject *args)
+_codecs_utf_8_encode_impl(PyModuleDef *module, PyObject *str,
+                          const char *errors)
+/*[clinic end generated code: output=ec831d80e7aedede input=2c22d40532f071f3]*/
 {
-    PyObject *str, *v;
-    const char *errors = NULL;
-
-    if (!PyArg_ParseTuple(args, "O|z:utf_8_encode",
-                          &str, &errors))
-        return NULL;
+    PyObject *v;
 
     str = PyUnicode_FromObject(str);
     if (str == NULL || PyUnicode_READY(str) < 0) {
@@ -798,17 +773,20 @@ utf_8_encode(PyObject *self,
 
 */
 
+/*[clinic input]
+_codecs.utf_16_encode
+    str: object
+    errors: str(accept={str, NoneType}) = NULL
+    byteorder: int = 0
+    /
+[clinic start generated code]*/
+
 static PyObject *
-utf_16_encode(PyObject *self,
-            PyObject *args)
+_codecs_utf_16_encode_impl(PyModuleDef *module, PyObject *str,
+                           const char *errors, int byteorder)
+/*[clinic end generated code: output=93ac58e960a9ee4d input=3935a489b2d5385e]*/
 {
-    PyObject *str, *v;
-    const char *errors = NULL;
-    int byteorder = 0;
-
-    if (!PyArg_ParseTuple(args, "O|zi:utf_16_encode",
-                          &str, &errors, &byteorder))
-        return NULL;
+    PyObject *v;
 
     str = PyUnicode_FromObject(str);
     if (str == NULL || PyUnicode_READY(str) < 0) {
@@ -821,16 +799,19 @@ utf_16_encode(PyObject *self,
     return v;
 }
 
+/*[clinic input]
+_codecs.utf_16_le_encode
+    str: object
+    errors: str(accept={str, NoneType}) = NULL
+    /
+[clinic start generated code]*/
+
 static PyObject *
-utf_16_le_encode(PyObject *self,
-                 PyObject *args)
+_codecs_utf_16_le_encode_impl(PyModuleDef *module, PyObject *str,
+                              const char *errors)
+/*[clinic end generated code: output=422bedb8da34fb66 input=bc27df05d1d20dfe]*/
 {
-    PyObject *str, *v;
-    const char *errors = NULL;
-
-    if (!PyArg_ParseTuple(args, "O|z:utf_16_le_encode",
-                          &str, &errors))
-        return NULL;
+    PyObject *v;
 
     str = PyUnicode_FromObject(str);
     if (str == NULL || PyUnicode_READY(str) < 0) {
@@ -843,16 +824,19 @@ utf_16_le_encode(PyObject *self,
     return v;
 }
 
+/*[clinic input]
+_codecs.utf_16_be_encode
+    str: object
+    errors: str(accept={str, NoneType}) = NULL
+    /
+[clinic start generated code]*/
+
 static PyObject *
-utf_16_be_encode(PyObject *self,
-                 PyObject *args)
+_codecs_utf_16_be_encode_impl(PyModuleDef *module, PyObject *str,
+                              const char *errors)
+/*[clinic end generated code: output=3aa7ee9502acdd77 input=5a69d4112763462b]*/
 {
-    PyObject *str, *v;
-    const char *errors = NULL;
-
-    if (!PyArg_ParseTuple(args, "O|z:utf_16_be_encode",
-                          &str, &errors))
-        return NULL;
+    PyObject *v;
 
     str = PyUnicode_FromObject(str);
     if (str == NULL || PyUnicode_READY(str) < 0) {
@@ -872,17 +856,20 @@ utf_16_be_encode(PyObject *self,
 
 */
 
+/*[clinic input]
+_codecs.utf_32_encode
+    str: object
+    errors: str(accept={str, NoneType}) = NULL
+    byteorder: int = 0
+    /
+[clinic start generated code]*/
+
 static PyObject *
-utf_32_encode(PyObject *self,
-            PyObject *args)
+_codecs_utf_32_encode_impl(PyModuleDef *module, PyObject *str,
+                           const char *errors, int byteorder)
+/*[clinic end generated code: output=3e7d5a003b02baed input=434a1efa492b8d58]*/
 {
-    PyObject *str, *v;
-    const char *errors = NULL;
-    int byteorder = 0;
-
-    if (!PyArg_ParseTuple(args, "O|zi:utf_32_encode",
-                          &str, &errors, &byteorder))
-        return NULL;
+    PyObject *v;
 
     str = PyUnicode_FromObject(str);
     if (str == NULL || PyUnicode_READY(str) < 0) {
@@ -895,16 +882,19 @@ utf_32_encode(PyObject *self,
     return v;
 }
 
+/*[clinic input]
+_codecs.utf_32_le_encode
+    str: object
+    errors: str(accept={str, NoneType}) = NULL
+    /
+[clinic start generated code]*/
+
 static PyObject *
-utf_32_le_encode(PyObject *self,
-                 PyObject *args)
+_codecs_utf_32_le_encode_impl(PyModuleDef *module, PyObject *str,
+                              const char *errors)
+/*[clinic end generated code: output=5dda641cd33dbfc2 input=dfa2d7dc78b99422]*/
 {
-    PyObject *str, *v;
-    const char *errors = NULL;
-
-    if (!PyArg_ParseTuple(args, "O|z:utf_32_le_encode",
-                          &str, &errors))
-        return NULL;
+    PyObject *v;
 
     str = PyUnicode_FromObject(str);
     if (str == NULL || PyUnicode_READY(str) < 0) {
@@ -917,16 +907,19 @@ utf_32_le_encode(PyObject *self,
     return v;
 }
 
+/*[clinic input]
+_codecs.utf_32_be_encode
+    str: object
+    errors: str(accept={str, NoneType}) = NULL
+    /
+[clinic start generated code]*/
+
 static PyObject *
-utf_32_be_encode(PyObject *self,
-                 PyObject *args)
+_codecs_utf_32_be_encode_impl(PyModuleDef *module, PyObject *str,
+                              const char *errors)
+/*[clinic end generated code: output=ccca8b44d91a7c7a input=4595617b18169002]*/
 {
-    PyObject *str, *v;
-    const char *errors = NULL;
-
-    if (!PyArg_ParseTuple(args, "O|z:utf_32_be_encode",
-                          &str, &errors))
-        return NULL;
+    PyObject *v;
 
     str = PyUnicode_FromObject(str);
     if (str == NULL || PyUnicode_READY(str) < 0) {
@@ -939,16 +932,19 @@ utf_32_be_encode(PyObject *self,
     return v;
 }
 
+/*[clinic input]
+_codecs.unicode_escape_encode
+    str: object
+    errors: str(accept={str, NoneType}) = NULL
+    /
+[clinic start generated code]*/
+
 static PyObject *
-unicode_escape_encode(PyObject *self,
-                     PyObject *args)
+_codecs_unicode_escape_encode_impl(PyModuleDef *module, PyObject *str,
+                                   const char *errors)
+/*[clinic end generated code: output=389f23d2b8f8d80b input=8273506f14076912]*/
 {
-    PyObject *str, *v;
-    const char *errors = NULL;
-
-    if (!PyArg_ParseTuple(args, "O|z:unicode_escape_encode",
-                          &str, &errors))
-        return NULL;
+    PyObject *v;
 
     str = PyUnicode_FromObject(str);
     if (str == NULL || PyUnicode_READY(str) < 0) {
@@ -961,16 +957,19 @@ unicode_escape_encode(PyObject *self,
     return v;
 }
 
+/*[clinic input]
+_codecs.raw_unicode_escape_encode
+    str: object
+    errors: str(accept={str, NoneType}) = NULL
+    /
+[clinic start generated code]*/
+
 static PyObject *
-raw_unicode_escape_encode(PyObject *self,
-                        PyObject *args)
+_codecs_raw_unicode_escape_encode_impl(PyModuleDef *module, PyObject *str,
+                                       const char *errors)
+/*[clinic end generated code: output=fec4e39d6ec37a62 input=181755d5dfacef3c]*/
 {
-    PyObject *str, *v;
-    const char *errors = NULL;
-
-    if (!PyArg_ParseTuple(args, "O|z:raw_unicode_escape_encode",
-                          &str, &errors))
-        return NULL;
+    PyObject *v;
 
     str = PyUnicode_FromObject(str);
     if (str == NULL || PyUnicode_READY(str) < 0) {
@@ -983,16 +982,19 @@ raw_unicode_escape_encode(PyObject *self,
     return v;
 }
 
+/*[clinic input]
+_codecs.latin_1_encode
+    str: object
+    errors: str(accept={str, NoneType}) = NULL
+    /
+[clinic start generated code]*/
+
 static PyObject *
-latin_1_encode(PyObject *self,
-               PyObject *args)
+_codecs_latin_1_encode_impl(PyModuleDef *module, PyObject *str,
+                            const char *errors)
+/*[clinic end generated code: output=ecf00eb8e48c889c input=f03f6dcf1d84bee4]*/
 {
-    PyObject *str, *v;
-    const char *errors = NULL;
-
-    if (!PyArg_ParseTuple(args, "O|z:latin_1_encode",
-                          &str, &errors))
-        return NULL;
+    PyObject *v;
 
     str = PyUnicode_FromObject(str);
     if (str == NULL || PyUnicode_READY(str) < 0) {
@@ -1005,16 +1007,19 @@ latin_1_encode(PyObject *self,
     return v;
 }
 
+/*[clinic input]
+_codecs.ascii_encode
+    str: object
+    errors: str(accept={str, NoneType}) = NULL
+    /
+[clinic start generated code]*/
+
 static PyObject *
-ascii_encode(PyObject *self,
-             PyObject *args)
+_codecs_ascii_encode_impl(PyModuleDef *module, PyObject *str,
+                          const char *errors)
+/*[clinic end generated code: output=a9d18fc6b6b91cfb input=d87e25a10a593fee]*/
 {
-    PyObject *str, *v;
-    const char *errors = NULL;
-
-    if (!PyArg_ParseTuple(args, "O|z:ascii_encode",
-                          &str, &errors))
-        return NULL;
+    PyObject *v;
 
     str = PyUnicode_FromObject(str);
     if (str == NULL || PyUnicode_READY(str) < 0) {
@@ -1027,17 +1032,21 @@ ascii_encode(PyObject *self,
     return v;
 }
 
+/*[clinic input]
+_codecs.charmap_encode
+    str: object
+    errors: str(accept={str, NoneType}) = NULL
+    mapping: object = NULL
+    /
+[clinic start generated code]*/
+
 static PyObject *
-charmap_encode(PyObject *self,
-             PyObject *args)
+_codecs_charmap_encode_impl(PyModuleDef *module, PyObject *str,
+                            const char *errors, PyObject *mapping)
+/*[clinic end generated code: output=14ca42b83853c643 input=85f4172661e8dad9]*/
 {
-    PyObject *str, *v;
-    const char *errors = NULL;
-    PyObject *mapping = NULL;
+    PyObject *v;
 
-    if (!PyArg_ParseTuple(args, "O|zO:charmap_encode",
-                          &str, &errors, &mapping))
-        return NULL;
     if (mapping == Py_None)
         mapping = NULL;
 
@@ -1052,27 +1061,34 @@ charmap_encode(PyObject *self,
     return v;
 }
 
-static PyObject*
-charmap_build(PyObject *self, PyObject *args)
+/*[clinic input]
+_codecs.charmap_build
+    map: unicode
+    /
+[clinic start generated code]*/
+
+static PyObject *
+_codecs_charmap_build_impl(PyModuleDef *module, PyObject *map)
+/*[clinic end generated code: output=9485b58fa44afa6a input=d91a91d1717dbc6d]*/
 {
-    PyObject *map;
-    if (!PyArg_ParseTuple(args, "U:charmap_build", &map))
-        return NULL;
     return PyUnicode_BuildEncodingMap(map);
 }
 
 #ifdef HAVE_MBCS
 
+/*[clinic input]
+_codecs.mbcs_encode
+    str: object
+    errors: str(accept={str, NoneType}) = NULL
+    /
+[clinic start generated code]*/
+
 static PyObject *
-mbcs_encode(PyObject *self,
-            PyObject *args)
+_codecs_mbcs_encode_impl(PyModuleDef *module, PyObject *str,
+                         const char *errors)
+/*[clinic end generated code: output=d1a013bc68798bd7 input=65c09ee1e4203263]*/
 {
-    PyObject *str, *v;
-    const char *errors = NULL;
-
-    if (!PyArg_ParseTuple(args, "O|z:mbcs_encode",
-                          &str, &errors))
-        return NULL;
+    PyObject *v;
 
     str = PyUnicode_FromObject(str);
     if (str == NULL || PyUnicode_READY(str) < 0) {
@@ -1085,17 +1101,20 @@ mbcs_encode(PyObject *self,
     return v;
 }
 
+/*[clinic input]
+_codecs.code_page_encode
+    code_page: int
+    str: object
+    errors: str(accept={str, NoneType}) = NULL
+    /
+[clinic start generated code]*/
+
 static PyObject *
-code_page_encode(PyObject *self,
-                 PyObject *args)
+_codecs_code_page_encode_impl(PyModuleDef *module, int code_page,
+                              PyObject *str, const char *errors)
+/*[clinic end generated code: output=3b406618dbfbce25 input=c8562ec460c2e309]*/
 {
-    PyObject *str, *v;
-    const char *errors = NULL;
-    int code_page;
-
-    if (!PyArg_ParseTuple(args, "iO|z:code_page_encode",
-                          &code_page, &str, &errors))
-        return NULL;
+    PyObject *v;
 
     str = PyUnicode_FromObject(str);
     if (str == NULL || PyUnicode_READY(str) < 0) {
@@ -1114,99 +1133,94 @@ code_page_encode(PyObject *self,
 
 /* --- Error handler registry --------------------------------------------- */
 
-PyDoc_STRVAR(register_error__doc__,
-"register_error(errors, handler)\n\
-\n\
-Register the specified error handler under the name\n\
-errors. handler must be a callable object, that\n\
-will be called with an exception instance containing\n\
-information about the location of the encoding/decoding\n\
-error and must return a (replacement, new position) tuple.");
+/*[clinic input]
+_codecs.register_error
+    errors: str
+    handler: object
+    /
 
-static PyObject *register_error(PyObject *self, PyObject *args)
-{
-    const char *name;
-    PyObject *handler;
+Register the specified error handler under the name errors.
 
-    if (!PyArg_ParseTuple(args, "sO:register_error",
-                          &name, &handler))
-        return NULL;
-    if (PyCodec_RegisterError(name, handler))
+handler must be a callable object, that will be called with an exception
+instance containing information about the location of the encoding/decoding
+error and must return a (replacement, new position) tuple.
+[clinic start generated code]*/
+
+static PyObject *
+_codecs_register_error_impl(PyModuleDef *module, const char *errors,
+                            PyObject *handler)
+/*[clinic end generated code: output=be00d3b1849ce68a input=5e6709203c2e33fe]*/
+{
+    if (PyCodec_RegisterError(errors, handler))
         return NULL;
     Py_RETURN_NONE;
 }
 
-PyDoc_STRVAR(lookup_error__doc__,
-"lookup_error(errors) -> handler\n\
-\n\
-Return the error handler for the specified error handling name\n\
-or raise a LookupError, if no handler exists under this name.");
+/*[clinic input]
+_codecs.lookup_error
+    name: str
+    /
 
-static PyObject *lookup_error(PyObject *self, PyObject *args)
-{
-    const char *name;
+lookup_error(errors) -> handler
 
-    if (!PyArg_ParseTuple(args, "s:lookup_error",
-                          &name))
-        return NULL;
+Return the error handler for the specified error handling name or raise a
+LookupError, if no handler exists under this name.
+[clinic start generated code]*/
+
+static PyObject *
+_codecs_lookup_error_impl(PyModuleDef *module, const char *name)
+/*[clinic end generated code: output=731e6df8c83c6158 input=4775dd65e6235aba]*/
+{
     return PyCodec_LookupError(name);
 }
 
 /* --- Module API --------------------------------------------------------- */
 
 static PyMethodDef _codecs_functions[] = {
-    {"register",                codec_register,                 METH_O,
-        register__doc__},
-    {"lookup",                  codec_lookup,                   METH_VARARGS,
-        lookup__doc__},
-    {"encode",     (PyCFunction)codec_encode,     METH_VARARGS|METH_KEYWORDS,
-        encode__doc__},
-    {"decode",     (PyCFunction)codec_decode,     METH_VARARGS|METH_KEYWORDS,
-        decode__doc__},
-    {"escape_encode",           escape_encode,                  METH_VARARGS},
-    {"escape_decode",           escape_decode,                  METH_VARARGS},
-    {"utf_8_encode",            utf_8_encode,                   METH_VARARGS},
-    {"utf_8_decode",            utf_8_decode,                   METH_VARARGS},
-    {"utf_7_encode",            utf_7_encode,                   METH_VARARGS},
-    {"utf_7_decode",            utf_7_decode,                   METH_VARARGS},
-    {"utf_16_encode",           utf_16_encode,                  METH_VARARGS},
-    {"utf_16_le_encode",        utf_16_le_encode,               METH_VARARGS},
-    {"utf_16_be_encode",        utf_16_be_encode,               METH_VARARGS},
-    {"utf_16_decode",           utf_16_decode,                  METH_VARARGS},
-    {"utf_16_le_decode",        utf_16_le_decode,               METH_VARARGS},
-    {"utf_16_be_decode",        utf_16_be_decode,               METH_VARARGS},
-    {"utf_16_ex_decode",        utf_16_ex_decode,               METH_VARARGS},
-    {"utf_32_encode",           utf_32_encode,                  METH_VARARGS},
-    {"utf_32_le_encode",        utf_32_le_encode,               METH_VARARGS},
-    {"utf_32_be_encode",        utf_32_be_encode,               METH_VARARGS},
-    {"utf_32_decode",           utf_32_decode,                  METH_VARARGS},
-    {"utf_32_le_decode",        utf_32_le_decode,               METH_VARARGS},
-    {"utf_32_be_decode",        utf_32_be_decode,               METH_VARARGS},
-    {"utf_32_ex_decode",        utf_32_ex_decode,               METH_VARARGS},
-    {"unicode_escape_encode",   unicode_escape_encode,          METH_VARARGS},
-    {"unicode_escape_decode",   unicode_escape_decode,          METH_VARARGS},
-    {"unicode_internal_encode", unicode_internal_encode,        METH_VARARGS},
-    {"unicode_internal_decode", unicode_internal_decode,        METH_VARARGS},
-    {"raw_unicode_escape_encode", raw_unicode_escape_encode,    METH_VARARGS},
-    {"raw_unicode_escape_decode", raw_unicode_escape_decode,    METH_VARARGS},
-    {"latin_1_encode",          latin_1_encode,                 METH_VARARGS},
-    {"latin_1_decode",          latin_1_decode,                 METH_VARARGS},
-    {"ascii_encode",            ascii_encode,                   METH_VARARGS},
-    {"ascii_decode",            ascii_decode,                   METH_VARARGS},
-    {"charmap_encode",          charmap_encode,                 METH_VARARGS},
-    {"charmap_decode",          charmap_decode,                 METH_VARARGS},
-    {"charmap_build",           charmap_build,                  METH_VARARGS},
-    {"readbuffer_encode",       readbuffer_encode,              METH_VARARGS},
-#ifdef HAVE_MBCS
-    {"mbcs_encode",             mbcs_encode,                    METH_VARARGS},
-    {"mbcs_decode",             mbcs_decode,                    METH_VARARGS},
-    {"code_page_encode",        code_page_encode,               METH_VARARGS},
-    {"code_page_decode",        code_page_decode,               METH_VARARGS},
-#endif
-    {"register_error",          register_error,                 METH_VARARGS,
-        register_error__doc__},
-    {"lookup_error",            lookup_error,                   METH_VARARGS,
-        lookup_error__doc__},
+    _CODECS_REGISTER_METHODDEF
+    _CODECS_LOOKUP_METHODDEF
+    _CODECS_ENCODE_METHODDEF
+    _CODECS_DECODE_METHODDEF
+    _CODECS_ESCAPE_ENCODE_METHODDEF
+    _CODECS_ESCAPE_DECODE_METHODDEF
+    _CODECS_UTF_8_ENCODE_METHODDEF
+    _CODECS_UTF_8_DECODE_METHODDEF
+    _CODECS_UTF_7_ENCODE_METHODDEF
+    _CODECS_UTF_7_DECODE_METHODDEF
+    _CODECS_UTF_16_ENCODE_METHODDEF
+    _CODECS_UTF_16_LE_ENCODE_METHODDEF
+    _CODECS_UTF_16_BE_ENCODE_METHODDEF
+    _CODECS_UTF_16_DECODE_METHODDEF
+    _CODECS_UTF_16_LE_DECODE_METHODDEF
+    _CODECS_UTF_16_BE_DECODE_METHODDEF
+    _CODECS_UTF_16_EX_DECODE_METHODDEF
+    _CODECS_UTF_32_ENCODE_METHODDEF
+    _CODECS_UTF_32_LE_ENCODE_METHODDEF
+    _CODECS_UTF_32_BE_ENCODE_METHODDEF
+    _CODECS_UTF_32_DECODE_METHODDEF
+    _CODECS_UTF_32_LE_DECODE_METHODDEF
+    _CODECS_UTF_32_BE_DECODE_METHODDEF
+    _CODECS_UTF_32_EX_DECODE_METHODDEF
+    _CODECS_UNICODE_ESCAPE_ENCODE_METHODDEF
+    _CODECS_UNICODE_ESCAPE_DECODE_METHODDEF
+    _CODECS_UNICODE_INTERNAL_ENCODE_METHODDEF
+    _CODECS_UNICODE_INTERNAL_DECODE_METHODDEF
+    _CODECS_RAW_UNICODE_ESCAPE_ENCODE_METHODDEF
+    _CODECS_RAW_UNICODE_ESCAPE_DECODE_METHODDEF
+    _CODECS_LATIN_1_ENCODE_METHODDEF
+    _CODECS_LATIN_1_DECODE_METHODDEF
+    _CODECS_ASCII_ENCODE_METHODDEF
+    _CODECS_ASCII_DECODE_METHODDEF
+    _CODECS_CHARMAP_ENCODE_METHODDEF
+    _CODECS_CHARMAP_DECODE_METHODDEF
+    _CODECS_CHARMAP_BUILD_METHODDEF
+    _CODECS_READBUFFER_ENCODE_METHODDEF
+    _CODECS_MBCS_ENCODE_METHODDEF
+    _CODECS_MBCS_DECODE_METHODDEF
+    _CODECS_CODE_PAGE_ENCODE_METHODDEF
+    _CODECS_CODE_PAGE_DECODE_METHODDEF
+    _CODECS_REGISTER_ERROR_METHODDEF
+    _CODECS_LOOKUP_ERROR_METHODDEF
     _CODECS__FORGET_CODEC_METHODDEF
     {NULL, NULL}                /* sentinel */
 };