49 lines
1.5 KiB
Dart
49 lines
1.5 KiB
Dart
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import "dart:isolate";
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import "dart:async";
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Uri toDartDataUri(String source) {
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return Uri.parse("data:application/dart;charset=utf-8,"
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"${Uri.encodeComponent(source)}");
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}
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createIsolateSource(String moduleSource, List<List<String>> moduleImports) {
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var moduleSourceParts = [];
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moduleImports.forEach((sourceImport) {
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String modName = sourceImport[0];
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String modAlias = sourceImport[1];
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moduleSourceParts.add("import 'package:${modName}.dart' as ${modAlias};");
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});
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moduleSourceParts.add(moduleSource);
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return """
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import "dart:isolate";
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import "${toDartDataUri(moduleSourceParts.join('\n'))}" as mut;
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main(List args, SendPort replyPort) {
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replyPort.send(mut.run(args));
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}
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""";
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}
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dynamic callModule(dynamic data) { return data.map( (a) => a+1); }
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evalModule(String moduleSource, List<List<String>> moduleImports, List args) {
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String source = createIsolateSource(moduleSource, moduleImports);
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Completer completer = new Completer();
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RawReceivePort receivePort;
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receivePort = new RawReceivePort( (message) {
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receivePort.close();
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completer.complete(message);
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});
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var packageRoot = Uri.parse('/packages');
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return Isolate.spawnUri(toDartDataUri(source), args, receivePort.sendPort, packageRoot: packageRoot).then( (isolate) {
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RawReceivePort errorPort;
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errorPort = new RawReceivePort( (message) {
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completer.completeError(message);
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});
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isolate.addErrorListener(errorPort.sendPort);
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return completer.future;
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});
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}
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