chore: import upstream snapshot with attribution

2026-07-13 12:47:05 +08:00
commit 4f3b7da785
7394 changed files with 2005594 additions and 0 deletions
@@ -0,0 +1,58 @@
+/* ******************************************************************************
+ *
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Apache License, Version 2.0 which is available at
+ * https://www.apache.org/licenses/LICENSE-2.0.
+ *
+ *  See the NOTICE file distributed with this work for additional
+ *  information regarding copyright ownership.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ ******************************************************************************/
+
+//
+// @author raver119@gmail.com
+//
+#include <indexing/NDIndex.h>
+
+namespace sd {
+
+bool NDIndex::isInterval() { return false; }
+
+LongType NDIndex::stride() { return _stride; }
+
+NDIndexAll::NDIndexAll() : NDIndex() { _indices.push_back(-1); }
+
+NDIndexPoint::NDIndexPoint(LongType point) : NDIndex() { this->_indices.push_back(point); }
+
+bool NDIndexAll::isInterval() { return false; }
+
+bool NDIndexPoint::isInterval() { return false; }
+
+bool NDIndexInterval::isInterval() { return true; }
+
+NDIndexInterval::NDIndexInterval(LongType start, LongType end, LongType stride) : NDIndex() {
+  this->_stride = stride;
+  for (int e = start; e < end; e += stride) this->_indices.push_back(e);
+}
+
+bool NDIndex::isAll() { return _indices.size() == 1 && _indices.at(0) == -1; }
+
+bool NDIndex::isPoint() { return _indices.size() == 1 && _indices.at(0) >= 0; }
+
+std::vector<LongType> &NDIndex::getIndices() { return _indices; }
+
+NDIndex *NDIndex::all() { return new NDIndexAll(); }
+
+NDIndex *NDIndex::point(LongType pt) { return new NDIndexPoint(pt); }
+
+NDIndex *NDIndex::interval(LongType start, LongType end, LongType stride) {
+  return new NDIndexInterval(start, end, stride);
+}
+}  // namespace sd