simdjson_flutter 0.0.1

Fast JSON encoding and decoding powered by simdjson (SIMD-accelerated).

example/lib/main.dart

import 'package:flutter/material.dart';
import 'package:simdjson_flutter/simdjson_flutter.dart' as simdjson;

void main() {
  runApp(const MyApp());
}

class MyApp extends StatefulWidget {
  const MyApp({super.key});

  @override
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  String _decodeResult = '';
  String _encodeResult = '';
  String _roundtripResult = '';

  @override
  void initState() {
    super.initState();
    _runExamples();
  }

  void _runExamples() {
    const sampleJson = '''
{
  "name": "simdjson",
  "version": 4,
  "fast": true,
  "scores": [9.8, 9.9, 10.0],
  "meta": {"author": "Daniel Lemire", "language": null}
}
''';

    final decoded = simdjson.jsonDecode(sampleJson);
    final name    = (decoded as Map)['name'];
    final scores  = (decoded['scores'] as List).cast<double>();
    setState(() {
      _decodeResult =
          'name=$name  version=${decoded['version']}  '
          'fast=${decoded['fast']}  avg=${scores.reduce((a, b) => a + b) / scores.length}';
    });

    final data = {
      'library': 'simdjson_flutter',
      'simd': true,
      'numbers': [1, 2, 3.14],
      'nested': {'key': 'value', 'nothing': null},
    };
    final encoded = simdjson.jsonEncode(data);
    setState(() => _encodeResult = encoded);

    final roundtripped = simdjson.jsonDecode(encoded) as Map;
    setState(() =>
        _roundtripResult = 'library=${roundtripped['library']}  '
            'simd=${roundtripped['simd']}  '
            'numbers=${roundtripped['numbers']}');
  }

  @override
  Widget build(BuildContext context) {
    const style = TextStyle(fontSize: 14, fontFamily: 'monospace');
    const spacer = SizedBox(height: 12);
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: const Text('simdjson_flutter example')),
        body: SingleChildScrollView(
          padding: const EdgeInsets.all(16),
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              const Text('Decode result:', style: TextStyle(fontWeight: FontWeight.bold)),
              spacer,
              Text(_decodeResult, style: style),
              const Divider(height: 32),
              const Text('Encode result:', style: TextStyle(fontWeight: FontWeight.bold)),
              spacer,
              Text(_encodeResult, style: style),
              const Divider(height: 32),
              const Text('Round-trip result:', style: TextStyle(fontWeight: FontWeight.bold)),
              spacer,
              Text(_roundtripResult, style: style),
            ],
          ),
        ),
      ),
    );
  }
}