instanceof should be used instead of is_a. I need to do a bit more research here to see if there are any edge cases.
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epriestley - Group Reviewers
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- rARC3dbc1418ff07: (stable) Promote 2015 Week 52
rARCb3e68c9f1793: Add a linter rule for use of `is_a`
Added unit tests.
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- rARC Arcanist
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I think this is an edge case:
$subclass = 'Subclass'; is_a($subclass, 'Base', $allow_string = true); // true $subclass instanceof Base; // false, string is not an instance of anything
I'm also not sure offhand what the distinction between is_a() and is_subclass_of() is.
| src/lint/linter/xhpast/rules/ArcanistIsAShouldBeInstanceOfXHPASTLinterRule.php | ||
|---|---|---|
| 30–32 | We could probably make evalStatic() smarter about this and have the code do something like: if (!$allow_string->isSomethingWeCanCallEvalStaticOn()) {
continue;
}
if ($allow_string->evalStatic()) {
continue;
}...to catch 0, etc., some day far in the future. | |
| 57 | Missing text at end of sentence ("which has... what?") | |
| 60 | Prefer ($replacement === null) for consistency. | |