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sola-json\n\nSolaJson is a lightweight JSON parsing library for Java 17+ that uses no additional libraries internally.\nIt started as a project to continue learning about building parsers based on language grammars.\n\n[![Java CI](https://github.com/iamdudeman/sola-json/actions/workflows/ci_build.yml/badge.svg)](https://github.com/iamdudeman/sola-json/actions/workflows/ci_build.yml)\n[![Javadocs Link](https://img.shields.io/badge/Javadocs-blue.svg)](https://iamdudeman.github.io/sola-json/)\n[![](https://jitpack.io/v/iamdudeman/sola-json.svg)](https://jitpack.io/#iamdudeman/sola-json)\n\nParser definition based on [json.org](https://www.json.org/json-en.html)\n\n## Download\n\n### Gradle + Jitpack:\n\n```kotlin\nrepositories {\n    maven {\n        url = uri(\"https://jitpack.io\")\n    }\n}\n\ndependencies {\n    implementation(\"com.github.iamdudeman:sola-json:2.1.3\")\n}\n```\n\n[sola-json jar downloads](https://github.com/iamdudeman/sola-json/releases) hosted on GitHub releases.\n\n## Example usages\n\n### Basic Usage\n\n```java\npublic class BasicUsage {\n    public static void main(String[] args) {\n        String jsonString = \"\"\"\n            {\n              \"key\": \"value\"\n            }\n            \"\"\";\n        SolaJson solaJson = new SolaJson();\n        JsonObject root = solaJson.parse(jsonString).asObject();\n        System.out.println(root.getString(\"key\"));\n\n        root.put(\"key2\", 10);\n        System.out.println(solaJson.stringify(root));\n    }\n}\n```\n\n```shell\n# Output\nvalue\n{\"key\":\"value\",\"key2\":10}\n```\n\n### Usage with JsonMapper\n\n```java\npublic class JsonMapperUsage {\n    public static void main(String[] args) {\n        String input = \"\"\"\n            {\n              \"value\": 1\n            }\n            \"\"\";\n        SolaJson solaJson = new SolaJson();\n        Pojo result = solaJson.parse(input, JSON_MAPPER);\n        System.out.println(result.value());\n\n        Pojo pojo = new Pojo(10);\n        System.out.println(solaJson.stringify(pojo, JSON_MAPPER));\n    }\n\n    public record Pojo(int value) {\n    }\n\n    static JsonMapper\u003cPojo\u003e JSON_MAPPER = new JsonMapper\u003c\u003e() {\n        @Override\n        public JsonObject toJson(Pojo object) {\n            JsonObject jsonObject = new JsonObject();\n\n            jsonObject.put(\"value\", object.value());\n\n            return jsonObject;\n        }\n\n        @Override\n        public TestPojo toObject(JsonObject jsonObject) {\n            return new Pojo(jsonObject.getInt(\"value\"));\n        }\n    };\n}\n```\n\n```shell\n# Output\n1\n{\"value\":1}\n```\n\n## Grammar\n\n### Terminals\n\n```\nCOLON      := :\nCOMMA      := ,\nFALSE      := false\nL_BRACKET  := [\nL_CURLY    := {\nNULL       := null\nNUMBER     := ((-[1-9])|0)[0-9]+(.[0-9]+)?([eE][-+]?[0-9]+)\nR_BRACKET  := ]\nR_CURLY    := }\nSTRING     := \" (Any codepoint except \" or \\ or control characters) \"\nTRUE       := true\n```\n\n### Rules\n\n```\n\u003croot\u003e    := \u003cobject\u003e | \u003carray\u003e\n\u003cobject\u003e  := L_CURLY (\u003cpair\u003e (COMMA \u003cpair\u003e)*)? R_BRACKET\n\u003carray\u003e   := L_BRACKET (\u003cvalue\u003e (COMMA \u003cvalue\u003e)*)? R_BRACKET\n\u003cpair\u003e    := STRING COLON \u003cvalue\u003e\n\u003cvalue\u003e   := STRING | NUMBER | \u003cobject\u003e | \u003carray\u003e | TRUE | FALSE | NULL\n```\n\n## Testing\n\n### Validity\n\nUsed test files from [JSON.org](https://www.json.org/JSON_checker/) to verify parser functionality.\n\n### Performance\n\nUsed data from [JSON placeholder](https://jsonplaceholder.typicode.com/) (small files) and San Francisco data (big file)\nfor performance testing.\n\nBenchmarked against [Google gson](https://github.com/google/gson) and [Jackson](https://github.com/FasterXML/jackson).\n\n[jmh](https://github.com/openjdk/jmh) benchmark file can be\nviewed [here](src/test/java/technology/sola/json/jmh/SolaJsonBenchmark.java)\n\nExecute benchmark view Gradle task `jmhBenchmark` in verification category.\n\nResults:\n```\nBenchmark                                  Mode  Cnt   Score   Error  Units\nSolaJsonBenchmark.gsonBig                    ss   50  21.239 ± 2.119  ms/op\nSolaJsonBenchmark.gsonSmall                  ss   50   3.238 ± 0.234  ms/op\nSolaJsonBenchmark.jacksonBig                 ss   50  16.775 ± 1.209  ms/op\nSolaJsonBenchmark.jacksonSmall               ss   50   3.436 ± 0.438  ms/op\nSolaJsonBenchmark.solaJsonBig                ss   50  26.956 ± 1.810  ms/op\nSolaJsonBenchmark.solaJsonBigTokenizeOnly    ss   50  17.729 ± 0.857  ms/op\nSolaJsonBenchmark.solaJsonSmall              ss   50   5.865 ± 0.296  ms/op\n```\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fiamdudeman%2Fsola-json","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fiamdudeman%2Fsola-json","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fiamdudeman%2Fsola-json/lists"}