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Pull Request resolved: https://github.com/pytorch/pytorch/pull/156317 Approved by: https://github.com/albanD ghstack dependencies: #156313, #156314, #156315, #156316
75 lines
2.0 KiB
C++
75 lines
2.0 KiB
C++
/* Copyright Python Software Foundation
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*
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* This file is copy-pasted from CPython source code with modifications:
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* https://github.com/python/cpython/blob/master/Objects/structseq.c
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* https://github.com/python/cpython/blob/2.7/Objects/structseq.c
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*
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* The purpose of this file is to overwrite the default behavior
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* of repr of structseq to provide better printing for returned
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* structseq objects from operators, aka torch.return_types.*
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*
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* For more information on copyright of CPython, see:
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* https://github.com/python/cpython#copyright-and-license-information
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*/
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#include <torch/csrc/utils/six.h>
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#include <torch/csrc/utils/structseq.h>
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#include <sstream>
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#include <structmember.h>
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namespace torch::utils {
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// NOTE: The built-in repr method from PyStructSequence was updated in
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// https://github.com/python/cpython/commit/c70ab02df2894c34da2223fc3798c0404b41fd79
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// so this function might not be required in Python 3.8+.
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PyObject* returned_structseq_repr(PyStructSequence* obj) {
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PyTypeObject* typ = Py_TYPE(obj);
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THPObjectPtr tup = six::maybeAsTuple(obj);
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if (tup == nullptr) {
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return nullptr;
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}
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std::stringstream ss;
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ss << typ->tp_name << "(\n";
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Py_ssize_t num_elements = Py_SIZE(obj);
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for (Py_ssize_t i = 0; i < num_elements; i++) {
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const char* cname = typ->tp_members[i].name;
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if (cname == nullptr) {
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PyErr_Format(
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PyExc_SystemError,
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"In structseq_repr(), member %zd name is nullptr"
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" for type %.500s",
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i,
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typ->tp_name);
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return nullptr;
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}
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PyObject* val = PyTuple_GetItem(tup.get(), i);
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if (val == nullptr) {
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return nullptr;
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}
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auto repr = THPObjectPtr(PyObject_Repr(val));
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if (repr == nullptr) {
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return nullptr;
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}
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const char* crepr = PyUnicode_AsUTF8(repr);
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if (crepr == nullptr) {
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return nullptr;
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}
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ss << cname << '=' << crepr;
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if (i < num_elements - 1) {
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ss << ",\n";
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}
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}
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ss << ")";
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return PyUnicode_FromString(ss.str().c_str());
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}
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} // namespace torch::utils
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