Rollforward of https://github.com/google/error-prone/commit/654d1dbf1e6dd652cd6e8ca003643ddf02266ec2: Handle Joiner.on(...) in AbstractToString. #4233
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Not yet handling the Iterable overload; that's a bit more involved given the lack of prior art. Handily there was a 'isInVarargsPosition' _right there_. PiperOrigin-RevId: 604758974
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| "class Test {", | ||
| " String test(Joiner j, Object[] a) {", | ||
| " return j.join(a);", | ||
| " }", |
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@graememorgan Do you intend to support the Joiner.join overload where the varargs parameter has other fixed parameters before it?
One of the codebases I maintain has this example:
private static String makePath(Namespace namespace, Project project, String... path) {
return "/" + Joiner.on("/").join(namespace.name(), project.name(), (Object[]) path);
}
And it's now erroring with:
error: [ArrayToString] Calling toString on an array does not provide useful information
return "/" + Joiner.on("/").join(namespace.name(), project.name(), (Object[]) path);
^
(see https://errorprone.info/bugpattern/ArrayToString)
Did you mean 'return "/" + Joiner.on("/").join(namespace.name(), project.name(), Arrays.toString((Object[]) path));'?
The suggestion is an unwanted behavior change, because it introduces the array format and causes tests to start failing with:
Expected :"/NamespacePath/ProjectPath/folder1/folder2/folder3"
Actual :"/NamespacePath/ProjectPath/[folder1, folder2, folder3]"
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@ash211 thanks for the comment, there's a fix in progress for that
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…er.join(Object, Object, Object...)` #4233 (review) PiperOrigin-RevId: 619367171
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…er.join(Object, Object, Object...)` #4233 (review) PiperOrigin-RevId: 619537499
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Rollforward of 654d1db: Handle Joiner.on(...) in AbstractToString.
Not yet handling the Iterable overload; that's a bit more involved given the lack of prior art.
Handily there was a 'isInVarargsPosition' right there.