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Refactor textRows.readRow to improve readability #1123

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dolmen wants to merge 4 commits into go-sql-driver:master from dolmen:simplify-readRow

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@dolmen
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@dolmen dolmen commented Jun 2, 2020
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Description

Refactor textRows.readRow to improve readability:

  • simplified flow:
    • reduced maximum indent level
    • return error early
    • remove 3 'continue'
  • remove one type cast
  • remove one obsolete comment about readLengthEncodedString
  • -8 lines of code (not counting the 2 added empty lines)

Checklist

  • Code compiles correctly
  • Created tests which fail without the change (if possible)
  • All tests passing
  • Extended the README / documentation, if necessary
  • Added myself / the copyright holder to the AUTHORS file

Refactor textRows.readRow to improve readability:
* simplified flow:
 * reduced maximum indent level
 * return error early
 * remove 3 'continue'
* remove one type cast
* remove one obsolete comment about readLengthEncodedString
* -6 lines of code
}
// If parseDateTime failed, leave as []byte
}
return err // err != nil
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@julienschmidt julienschmidt Jun 2, 2020

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isn't err ignored now?
Seems like this should also have a test case.

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@julienschmidt julienschmidt Jun 2, 2020

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Okay, I just saw the comment above.
This is a semantic change, which I disagree with. We should not introduce any silent fallback behavior. The user requested a parsed time and should receive an error, not something unexpected.

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Well, it looks like I misunderstood the original code. And this shows that it must be refactored to make it easier to follow 😉 .

I will fix my code once the test suite is extended to cover that case.

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@julienschmidt julienschmidt Jun 9, 2020

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This still must be changed before I can approve this change.

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@methane methane left a comment

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I prefer one more indent (e.g. put switch statement inside if mc.parseTime {, instead of duplicated dest[i] = b.
But this is matter of taste. The current PR code is OK too.

Co-authored-by: Inada Naoki <songofacandy@gmail.com>
}
// If parseDateTime failed, leave as []byte
}
return err // err != nil
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@julienschmidt julienschmidt Jun 9, 2020

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This still must be changed before I can approve this change.

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dolmen commented Jan 18, 2023

Refactor finally happened in 75d09ac. See #1230.

So closing.

@dolmen dolmen deleted the simplify-readRow branch January 18, 2023 13:43
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@julienschmidt julienschmidt julienschmidt requested changes

@methane methane methane approved these changes

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v1.7.0

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