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Kernel: Stop allowing implicit conversion from KResult to int

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This patch removes KResult::operator int() and deals with the fallout.
This forces a lot of code to be more explicit in its handling of errors,
greatly improving readability.
This commit is contained in:
Andreas Kling 2021-08-14 15:15:11 +02:00
parent d30d776ca4
commit 7676edfb9b
14 changed files with 51 additions and 52 deletions
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13
Kernel/KResult.h
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@ -28,12 +28,17 @@ public:
: m_error(0)
{
}
operator int() const { return m_error; }
[[nodiscard]] int error() const { return m_error; }
[[nodiscard]] bool is_success() const { return m_error == 0; }
[[nodiscard]] bool is_error() const { return !is_success(); }
bool operator==(ErrnoCode error) const { return is_error() && m_error == -error; }
bool operator!=(ErrnoCode error) const { return !is_error() || m_error != -error; }
bool operator!=(KSuccessTag) const { return is_error(); }
bool operator==(KSuccessTag) const { return !is_error(); }
private:
template<typename T>
friend class KResultOr;
@ -167,9 +172,11 @@ private:
}
template<>
struct AK::Formatter<Kernel::KResult> : Formatter<int> {
struct AK::Formatter<Kernel::KResult> : Formatter<FormatString> {
void format(FormatBuilder& builder, Kernel::KResult value)
{
return Formatter<int>::format(builder, value);
if (value.is_error())
return AK::Formatter<FormatString>::format(builder, "KResult({})", value.error());
return AK::Formatter<FormatString>::format(builder, "KResult(success)");
}
};