src: replace FromJust() with Check() when possible #27162
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FromJust() is often used not for its return value, but for its side-effects. In these cases, Check() exists, and is more clear as to the intent. From its comment: To be used, where the actual value of the Maybe is not needed like Object::Set. See: https://github.com/nodejs/node/pull/26929/files#r269256335
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FromJust() is often used not for its return value, but for its side-effects. In these cases, Check() exists, and is more clear as to the intent. From its comment: To be used, where the actual value of the Maybe is not needed, like Object::Set. See: https://github.com/nodejs/node/pull/26929/files#r269256335 PR-URL: #27162 Reviewed-By: Anatoli Papirovski <[email protected]> Reviewed-By: Michaël Zasso <[email protected]> Reviewed-By: Ben Noordhuis <[email protected]> Reviewed-By: Gus Caplan <[email protected]> Reviewed-By: Yongsheng Zhang <[email protected]>
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Handle possible JS exceptions that can occur by returning to JS land immediately. The motivation for this change is that `USE(….FromJust());` is an anti-pattern, and `.FromJust()` with an unused return value is superseded by `.Check()`. However, in this case, checking that the operation succeeded is not necessary. Refs: nodejs#27162
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Handle possible JS exceptions that can occur by returning to JS land immediately. The motivation for this change is that `USE(….FromJust());` is an anti-pattern, and `.FromJust()` with an unused return value is superseded by `.Check()`. However, in this case, checking that the operation succeeded is not necessary. Refs: #27162 PR-URL: #27245 Reviewed-By: Ben Noordhuis <[email protected]> Reviewed-By: James M Snell <[email protected]>
This was referenced Apr 23, 2019
@sam-github You could file a V8 CL that does that. Seems like a good change to me. |
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FromJust() is often used not for its return value, but for its
side-effects. In these cases, Check() exists, and is more clear as to
the intent. From its comment:
To be used, where the actual value of the Maybe is not needed like
Object::Set.
See: https://github.com/nodejs/node/pull/26929/files#r269256335
I'm not dead sure this is a good idea, because Check() doesn't exist on 11.x, but on the other hand, it's
a trivial method, we could probably backport the v8 patch for it to 11.x if it's absence was painful.
Check()is much more clear in its intent, IMO, than FromJust() called just for its side-effect.Checklist
make -j4 test(UNIX), orvcbuild test(Windows) passes