Support generating a custom map and using non-copying wrappers for serialization #48
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| // TODO(kevmoo): Add documentation | ||
| abstract class JsonMapWrapper extends MapBase<String, dynamic> { | ||
| /// This operation is not supported by an unmodifiable map. |
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Hmmm, is there a mixin for this? Otherwise this has to keep up to date with any new apis that the sdk adds....
Also, I think this should throw on putIfAbsent and addAll as well.
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Dude! WIP!
MapBase handles everything but what's overloaded here – it's nice.
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Ah ok looking at the docs for MapBase this should be fine.
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| final List<TypeHelper> _typeHelpers; | ||
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| final bool _doNewThing = true; |
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Might want to be a bit more descriptive here :)
| buffer.writeln('}'); | ||
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| if (_doNewThing) { | ||
| buffer.writeln(); |
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nit: it is probably worth breaking this out into its own function
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| if (_doNewThing) { | ||
| buffer.writeln(); | ||
| // |
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| if (fieldsList.every((e) => _includeIfNull(e, classIncludeIfNull))) { | ||
| // write simple `toJson` method that includes all keys... | ||
| //_writeToJsonSimple(buffer, fields); |
| } else { | ||
| // At least one field should be excluded if null | ||
| //_writeToJsonWithNullChecks(buffer, fields, includeIfNull); | ||
| buffer.writeln('@override\nIterable<String> get keys sync* {'); |
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Is it worth having the diverging code paths here? I would avoid it unless you have a compelling reason (performance?) to do this optimization.
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sync* is pretty expensive. Going to benchmark to find out.
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...in principle I agree
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You could also not use sync* and just build up a list or w/e, if you are concerned about the performance
| var jsonKeys = fields.values.map(_safeNameAccess).join(', '); | ||
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| // TODO(kevmoo): maybe put this in a static field instead? | ||
| // const lists have unfortunate overhead |
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A static final field would be lazy initialized right? That might help startup performance.
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But then I'm allocating a List on every call.
Again – will benchmark. :-)
…On Tue, Oct 3, 2017 at 12:54 PM, Jacob MacDonald ***@***.***> wrote:
***@***.**** commented on this pull request.
------------------------------
In json_serializable/lib/src/json_serializable_generator.dart
<#48 (comment)>
:
> +
+ if (fieldsList.every((e) => _includeIfNull(e, classIncludeIfNull))) {
+ // write simple `toJson` method that includes all keys...
+ //_writeToJsonSimple(buffer, fields);
+
+ var jsonKeys = fields.values.map(_safeNameAccess).join(', ');
+
+ // TODO(kevmoo): maybe put this in a static field instead?
+ // const lists have unfortunate overhead
+ buffer.writeln(''' @OverRide
+ Iterable<String> get keys => const [${jsonKeys}];
+''');
+ } else {
+ // At least one field should be excluded if null
+ //_writeToJsonWithNullChecks(buffer, fields, includeIfNull);
+ ***@***.***\nIterable<String> get keys sync* {');
You could also not use sync* and just build up a list or w/e, if you are
concerned about the performance
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<#48 (comment)>,
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@jakemac53 – this is ready for review. |
| import 'package:json_serializable/src/utils.dart'; | ||
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| import 'test_files/kitchen_sink.dart'; | ||
| import 'test_files/kitchen_sink.dart' as nullable; |
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nit, this prefix is a bit inconsistent (not abbreviated). Maybe just opt for no prefix? Or come up with a prefix and add it to wrapped as well.
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