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Change json dependency from json-simple to GSON (#264)
This PR updates the project's JSON handling dependency from `json-simple` to `GSON`. The switch to `GSON` addresses the need to suppress unchecked warnings (`@SuppressWarnings("unchecked")`) that were frequently required with `json-simple`. This change is also a proactive step in preparation for upcoming updates involving automatic source code fixes, which will heavily rely on JSON deserialization and parsing APIs, particularly for handling network connections and response parsing.- Loading branch information
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286 changes: 102 additions & 184 deletions
286
annotator-core/src/main/java/edu/ucr/cs/riple/core/Config.java
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annotator-core/src/main/java/edu/ucr/cs/riple/core/util/JsonParser.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,218 @@ | ||
| /* | ||
| * MIT License | ||
| * | ||
| * Copyright (c) 2025 Nima Karimipour | ||
| * | ||
| * Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| * of this software and associated documentation files (the "Software"), to deal | ||
| * in the Software without restriction, including without limitation the rights | ||
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| * copies of the Software, and to permit persons to whom the Software is | ||
| * furnished to do so, subject to the following conditions: | ||
| * | ||
| * The above copyright notice and this permission notice shall be included in | ||
| * all copies or substantial portions of the Software. | ||
| * | ||
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | ||
| * THE SOFTWARE. | ||
| */ | ||
|
|
||
| package edu.ucr.cs.riple.core.util; | ||
|
|
||
| import com.google.gson.JsonArray; | ||
| import com.google.gson.JsonElement; | ||
| import com.google.gson.JsonNull; | ||
| import com.google.gson.JsonObject; | ||
| import com.google.gson.JsonPrimitive; | ||
| import com.google.gson.JsonSyntaxException; | ||
| import java.io.IOException; | ||
| import java.nio.charset.Charset; | ||
| import java.nio.file.Files; | ||
| import java.nio.file.Path; | ||
| import java.util.List; | ||
| import java.util.function.Function; | ||
| import java.util.stream.Collectors; | ||
| import java.util.stream.Stream; | ||
| import java.util.stream.StreamSupport; | ||
|
|
||
| /** A utility class for parsing JSON files. */ | ||
| public class JsonParser { | ||
|
|
||
| /** The JSON object to parse. */ | ||
| private final JsonObject json; | ||
|
|
||
| /** | ||
| * Creates a new JsonParser with the given path. | ||
| * | ||
| * @param path The path to the JSON file. | ||
| */ | ||
| public JsonParser(Path path) { | ||
| this.json = parseJson(path); | ||
| } | ||
|
|
||
| /** | ||
| * Creates a new JsonParser with the given content. | ||
| * | ||
| * @param content The content of the JSON file. | ||
| */ | ||
| public JsonParser(String content) { | ||
| this.json = parseJson(content); | ||
| } | ||
|
|
||
| /** | ||
| * Used to retrieve a value from a key in the JSON object, the given key should be in the format | ||
| * of "key1:key2:key3". The method recursively searches for the key in the JSON object. It returns | ||
| * a {@link OrElse} object that can be used to retrieve the value or a default value if the key | ||
| * does not exist. | ||
| * | ||
| * @param key The key to search for in the JSON object. | ||
| * @return An {@link OrElse} object that can be used to retrieve the value or a default value if | ||
| * the key does not exist. | ||
| */ | ||
| public OrElse getValueFromKey(String key) { | ||
| JsonObject current = json; | ||
| String[] keys = key.split(":"); | ||
| int index = 0; | ||
| while (index != keys.length - 1) { | ||
| if (current.keySet().contains(keys[index])) { | ||
| current = (JsonObject) current.get(keys[index]); | ||
| index++; | ||
| } else { | ||
| return new OrElse(JsonNull.INSTANCE); | ||
| } | ||
| } | ||
| return current.keySet().contains(keys[index]) | ||
| ? new OrElse(current.get(keys[index])) | ||
| : new OrElse(JsonNull.INSTANCE); | ||
| } | ||
|
|
||
| /** | ||
| * Used to retrieve an array of values from a key in the JSON object, the given key should be in | ||
| * the format of "key1:key2:key3". The method recursively searches for the key in the JSON object. | ||
| * It returns a {@link ListOrElse} object that can be used to retrieve the value or a default | ||
| * value if the key does not exist. | ||
| * | ||
| * @param key The key to search for in the JSON object. | ||
| * @param mapper The function to map the JSON object to the desired type. | ||
| * @return A {@link ListOrElse} object that can be used to retrieve the value or a default value | ||
| * if the key does not exist. | ||
| * @param <T> The type of the array elements. | ||
| */ | ||
| public <T> ListOrElse<T> getArrayValueFromKey(String key, Function<JsonObject, T> mapper) { | ||
| OrElse jsonValue = getValueFromKey(key); | ||
| if (jsonValue.value.equals(JsonNull.INSTANCE)) { | ||
| return new ListOrElse<>(Stream.of()); | ||
| } else { | ||
| if (jsonValue.value instanceof JsonArray) { | ||
| return new ListOrElse<>( | ||
| StreamSupport.stream(((JsonArray) jsonValue.value).spliterator(), false) | ||
| .map(jsonElement -> mapper.apply(jsonElement.getAsJsonObject()))); | ||
| } | ||
| throw new IllegalStateException( | ||
| "Expected type to be json array, found: " + jsonValue.value.getClass()); | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Parses a file in json format and returns as a JsonObject. | ||
| * | ||
| * @param path The path to the file. | ||
| * @return The JsonObject parsed from the file. | ||
| */ | ||
| private static JsonObject parseJson(Path path) { | ||
| try { | ||
| return com.google.gson.JsonParser.parseReader( | ||
| Files.newBufferedReader(path, Charset.defaultCharset())) | ||
| .getAsJsonObject(); | ||
| } catch (JsonSyntaxException | IOException e) { | ||
| throw new RuntimeException("Error in parsing json at path: " + path, e); | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Parses a string in json format and returns as a JsonObject. | ||
| * | ||
| * @param content The content to parse. | ||
| * @return The JsonObject parsed from the content. | ||
| */ | ||
| private static JsonObject parseJson(String content) { | ||
| try { | ||
| return com.google.gson.JsonParser.parseString(content).getAsJsonObject(); | ||
| } catch (JsonSyntaxException e) { | ||
| throw new RuntimeException("Error in parsing: " + content, e); | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * A utility class to retrieve a value from a JSON object or a default value if the key does not | ||
| * exist. | ||
| */ | ||
| public static class OrElse { | ||
|
|
||
| /** The JSON element retrieved from the JSON object. */ | ||
| private final JsonElement value; | ||
|
|
||
| /** | ||
| * Creates a new OrElse object with the given JSON element. | ||
| * | ||
| * @param value The retrieved JSON element. | ||
| */ | ||
| private OrElse(JsonElement value) { | ||
| this.value = value; | ||
| } | ||
|
|
||
| /** | ||
| * Returns the value as a {@link JsonPrimitive} if it is not {@link JsonNull}, otherwise returns | ||
| * the default value. | ||
| * | ||
| * @param defaultValue The default value to return if the key does not exist. | ||
| * @return The value as a {@link JsonPrimitive} if it is not {@link JsonNull}, otherwise returns | ||
| * the default value. | ||
| */ | ||
| public JsonPrimitive orElse(Object defaultValue) { | ||
| return value.equals(JsonNull.INSTANCE) | ||
| ? new JsonPrimitive(String.valueOf(defaultValue)) | ||
| : value.getAsJsonPrimitive(); | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * A utility class to retrieve an array of values from a JSON object or a default value if the key | ||
| * does not exist. | ||
| * | ||
| * @param <T> The type of the array elements. | ||
| */ | ||
| public static class ListOrElse<T> { | ||
|
|
||
| /** The stream of values retrieved from the JSON object. */ | ||
| private final Stream<T> value; | ||
|
|
||
| /** | ||
| * Creates a new ListOrElse object with the given stream of values. | ||
| * | ||
| * @param value The retrieved stream of values. | ||
| */ | ||
| private ListOrElse(Stream<T> value) { | ||
| this.value = value; | ||
| } | ||
|
|
||
| /** | ||
| * Returns the values as a list if it is not null, otherwise returns the default value. | ||
| * | ||
| * @param defaultValue The default value to return if the key does not exist. | ||
| * @return The values as a list if it is not null, otherwise returns the default value. | ||
| */ | ||
| public List<T> orElse(List<T> defaultValue) { | ||
| if (value == null) { | ||
| return defaultValue; | ||
| } else { | ||
| return this.value.collect(Collectors.toList()); | ||
| } | ||
| } | ||
| } | ||
| } |
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