gh-95005: Replace PyAccu with PyUnicodeWriter (gh-95006)

1 files changed, 0 insertions, 115 deletions

diff --git a/Objects/accu.c b/Objects/accu.c
deleted file mode 100644
index c8b5d38..0000000
--- a/Objects/accu.c
+++ /dev/null
@@ -1,115 +0,0 @@
-/* Accumulator struct implementation */
-
-#include "Python.h"
-#include "pycore_accu.h"
-
-static PyObject *
-join_list_unicode(PyObject *lst)
-{
-    /* return ''.join(lst) */
-    PyObject *sep, *ret;
-    sep = PyUnicode_FromStringAndSize("", 0);
-    ret = PyUnicode_Join(sep, lst);
-    Py_DECREF(sep);
-    return ret;
-}
-
-int
-_PyAccu_Init(_PyAccu *acc)
-{
-    /* Lazily allocated */
-    acc->large = NULL;
-    acc->small = PyList_New(0);
-    if (acc->small == NULL)
-        return -1;
-    return 0;
-}
-
-static int
-flush_accumulator(_PyAccu *acc)
-{
-    Py_ssize_t nsmall = PyList_GET_SIZE(acc->small);
-    if (nsmall) {
-        int ret;
-        PyObject *joined;
-        if (acc->large == NULL) {
-            acc->large = PyList_New(0);
-            if (acc->large == NULL)
-                return -1;
-        }
-        joined = join_list_unicode(acc->small);
-        if (joined == NULL)
-            return -1;
-        if (PyList_SetSlice(acc->small, 0, nsmall, NULL)) {
-            Py_DECREF(joined);
-            return -1;
-        }
-        ret = PyList_Append(acc->large, joined);
-        Py_DECREF(joined);
-        return ret;
-    }
-    return 0;
-}
-
-int
-_PyAccu_Accumulate(_PyAccu *acc, PyObject *unicode)
-{
-    Py_ssize_t nsmall;
-    assert(PyUnicode_Check(unicode));
-
-    if (PyList_Append(acc->small, unicode))
-        return -1;
-    nsmall = PyList_GET_SIZE(acc->small);
-    /* Each item in a list of unicode objects has an overhead (in 64-bit
-     * builds) of:
-     *   - 8 bytes for the list slot
-     *   - 56 bytes for the header of the unicode object
-     * that is, 64 bytes.  100000 such objects waste more than 6 MiB
-     * compared to a single concatenated string.
-     */
-    if (nsmall < 100000)
-        return 0;
-    return flush_accumulator(acc);
-}
-
-PyObject *
-_PyAccu_FinishAsList(_PyAccu *acc)
-{
-    int ret;
-    PyObject *res;
-
-    ret = flush_accumulator(acc);
-    Py_CLEAR(acc->small);
-    if (ret) {
-        Py_CLEAR(acc->large);
-        return NULL;
-    }
-    res = acc->large;
-    acc->large = NULL;
-    return res;
-}
-
-PyObject *
-_PyAccu_Finish(_PyAccu *acc)
-{
-    PyObject *list, *res;
-    if (acc->large == NULL) {
-        list = acc->small;
-        acc->small = NULL;
-    }
-    else {
-        list = _PyAccu_FinishAsList(acc);
-        if (!list)
-            return NULL;
-    }
-    res = join_list_unicode(list);
-    Py_DECREF(list);
-    return res;
-}
-
-void
-_PyAccu_Destroy(_PyAccu *acc)
-{
-    Py_CLEAR(acc->small);
-    Py_CLEAR(acc->large);
-}