Generally, null.nullField means the compiler can prove the value is null at
that point, and draft compile skills the optimization that defects a lot of
that. So either it really is always null, or there is an optimizer bug.
On Jun 30, 2014 10:31 AM, "田传武" <i...@goodow.com> wrote:
> Hello,
> The newest @JsType feature is really very fascinating, and works in most
> cases. The only issue i found was the wrong null.nullField javascript
> output.
>
> the compile command:
>
> java -cp xxx com.google.gwt.dev.Compiler -war xxx -XnoclassMetadata
> -XnocheckCasts -XjsInteropMode JS -XclosureCompiler -style
> PRETTY com.goodow.realtime.store.StoreProd
>
>
> Java code:
>
> public CollaborativeOperation compose(JsonArray operations) {
> final CollaborativeOperation first =
> operations.<CollaborativeOperation> get(0);
> if (operations.length() == 1) {
> return first;
> }
> final JsonArray components = Json.createArray();
> operations.forEach(...);
> return new CollaborativeOperation(first.userId, first.sessionId,
> components);
> }
>
>
> translated to the following javascript:
>
> function $compose(operations) {
> var components;
> components = operations[0];
> if (1 == operations.length) {
> return components;
> }
> components = [];
> $forEach(operations, new CollaborativeTransformer$1(components));
> return new CollaborativeOperation(null.nullField, null.nullField,
> components);
> }
>
>
>
> There's an easy workaround to fix this: using the -draftCompile options
> when compilation. Here is the full compilation log:
> https://travis-ci.org/goodow/realtime-store/builds/28777579 (search
> for ./gwt-compile.sh)
>
>
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