bpriver_chain 0.12.0

Implementation of chain language. Available as cui, argument parser or inter-appliation communication.

example/example.dart

import 'package:bpriver_chain/bpriver_chain.dart';
import 'package:bpriver_origin/logger_result.dart';

void main() {

    final source = 'a --b x -c --v -w --x x y z -z';

    // parse serialized data.
    final parseStringResult = Chain.parseString(source);
    if (parseStringResult is! Success<List<String>, ChainException>) {
        print('Chain.parseString() failed.');
        return;
    }

    // Give List<String> type data to Chain.fromArguments() method.
    final parseListResult = Chain.fromArguments(parseStringResult.wrapped);
    if (parseListResult is! Success<Chain, ChainException>) {
        print('Chain.fromArguments() failed.');
        return;
    };

    final Chain chain = parseListResult.wrapped;

    final SingleResult = chain.getSingleAsString('b');
    if (SingleResult is! Success<String, ChainException>) {
        print('chain.getSingleAsSingleString() failed.');
        return;
    };

    final flagResult = chain.isFlag('c');

    final multipleSingleResult = chain.getMultiAsString('x');
    if (multipleSingleResult is! Success<List<String>, ChainException>) {
        print('chain.getSingleAsMultipleString() failed.');
        return;
    }

    print('head = ${chain.head.asContent.name}');
    print('b single value = ${SingleResult.wrapped}');
    print('c flag = ${flagResult.wrapped}');
    print('x single value list = ${multipleSingleResult.wrapped}');

    print('multi list = ${chain.multiNameList}');
    print('single list = ${chain.singleNameList}');
    print('flag list = ${chain.flagNameList}');

}