Currently, editor code uses following style (or similar style) in a lot of places:
if (foo)
{
}
else
{
}
This patch fixes this as conforming to our coding rules, i.e., it becomes:
if (foo) {
} else {
}
Additionally, this fixes other odd control statements in the files which include above issue because it's difficult to find following issues with searching the files:
* if (foo) bar;
* if (foo) { bar; }
* if (foo)
bar;
Finally, if it becomes much simpler than current code, this patch rewrites existing code with "early return style". But this case is only a few places because this is risky.
MozReview-Commit-ID: 2Gs26goWXrF
In our coding rules, variable names of nsresult should be rv. Indeed, when you see |rv| in the code, you must assume that its type if nsresult.
However, a lot of code under editor/ uses |res| for the variables of nsresult. Let's replace |res| with |rv|.
And this patch improves following points:
1. When |rv| is set in both |if| and |else| block and they are check outside of them, this moves the check into each |if| and |else| block because even if the failure is notified with warning, you cannot see which case was performed and failed. This change makes it clear.
2. When |return rv;| returns non-error code because |rv| is checked with NS_ENSURE_SUCCESS() immediately before, setting replacing it with |return NS_OK;| is clearer.
3. Move declaration of |nsresult rv| into smaller scope as far as possible. This prevents setting rv to unexpected value and easier to check its value at reading the code.
MozReview-Commit-ID: 9MAqj7sFey3
