| /* Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * 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. |
| */ |
| |
| parcel Lucy; |
| |
| /** |
| * A collection of Tokens. |
| * |
| * An Inversion is a collection of Token objects which you can add to, then |
| * iterate over. |
| */ |
| class Lucy::Analysis::Inversion inherits Lucy::Object::Obj { |
| |
| Token **tokens; |
| uint32_t size; |
| uint32_t cap; |
| uint32_t cur; /* pointer to current token */ |
| bool_t inverted; /* inversion has been inverted */ |
| uint32_t *cluster_counts; /* counts per unique text */ |
| uint32_t cluster_counts_size; /* num unique texts */ |
| |
| /** |
| * @param seed An initial Token to start things off, which may be NULL. |
| */ |
| inert incremented Inversion* |
| new(Token *seed = NULL); |
| |
| /** Tack a token onto the end of the Inversion. |
| * |
| * @param token A Token. |
| */ |
| void |
| Append(Inversion *self, decremented Token *token); |
| |
| /** Return the next token in the Inversion until out of tokens. |
| */ |
| nullable Token* |
| Next(Inversion *self); |
| |
| /** Reset the Inversion's iterator, so that the next call to next() |
| * returns the first Token in the inversion. |
| */ |
| void |
| Reset(Inversion *self); |
| |
| /** Assign positions to constituent Tokens, tallying up the position |
| * increments. Sort the tokens first by token text and then by position |
| * ascending. |
| */ |
| void |
| Invert(Inversion *self); |
| |
| /** Return a pointer to the next group of like Tokens. The number of |
| * tokens in the cluster will be placed into <code>count</code>. |
| * |
| * @param count The number of tokens in the cluster. |
| */ |
| nullable Token** |
| Next_Cluster(Inversion *self, uint32_t *count); |
| |
| uint32_t |
| Get_Size(Inversion *self); |
| |
| public void |
| Destroy(Inversion *self); |
| } |
| |
| |