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AK+Kernel: StringView hash map Traits should not set peek type to String

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This typo / bug in the Traits<T> implementation for StringView caused
AK::HashMap methods to return a `String` when looking up values out of
a hash map of type HashTable<StringView,StringView>.

This change fixes the typo, and fixes the only consumer, the kernel
Commandline class.
This commit is contained in:
Brian Gianforcaro 2021-08-14 23:49:17 -07:00 committed by Andreas Kling
parent 9bdb44c5d2
commit e9d8f158a1
Notes: sideshowbarker 2024-07-18 05:33:54 +09:00 
Author: https://github.com/bgianfo
Commit: https://github.com/SerenityOS/serenity/commit/e9d8f158a12
Pull-request: https://github.com/SerenityOS/serenity/pull/9469
Reviewed-by: https://github.com/alimpfard ✅
3 changed files with 8 additions and 8 deletions
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2
AK/StringView.h
View file

@ -228,7 +228,7 @@ private:
};
template<>
struct Traits<StringView> : public GenericTraits<String> {
struct Traits<StringView> : public GenericTraits<StringView> {
static unsigned hash(const StringView& s) { return s.hash(); }
};

8
Kernel/CommandLine.cpp
View file

@ -80,7 +80,7 @@ UNMAP_AFTER_INIT CommandLine::CommandLine(const String& cmdline_from_bootloader)
add_arguments(args);
}
Optional<String> CommandLine::lookup(const StringView& key) const
Optional<StringView> CommandLine::lookup(const StringView& key) const
{
return m_params.get(key);
}
@ -132,7 +132,7 @@ UNMAP_AFTER_INIT bool CommandLine::is_force_pio() const
return contains("force_pio"sv);
}
UNMAP_AFTER_INIT String CommandLine::root_device() const
UNMAP_AFTER_INIT StringView CommandLine::root_device() const
{
return lookup("root"sv).value_or("/dev/hda"sv);
}
@ -220,14 +220,14 @@ UNMAP_AFTER_INIT bool CommandLine::is_no_framebuffer_devices_mode() const
return mode == BootMode::NoFramebufferDevices || mode == BootMode::SelfTest;
}
String CommandLine::userspace_init() const
StringView CommandLine::userspace_init() const
{
return lookup("init"sv).value_or("/bin/SystemServer"sv);
}
Vector<String> CommandLine::userspace_init_args() const
{
auto init_args = lookup("init_args"sv).value_or(""sv).split(',');
auto init_args = lookup("init_args"sv).value_or(""sv).to_string().split(';');
if (!init_args.is_empty())
init_args.prepend(userspace_init());

6
Kernel/CommandLine.h
View file

@ -55,7 +55,7 @@ public:
};
[[nodiscard]] const String& string() const { return m_string; }
Optional<String> lookup(const StringView& key) const;
Optional<StringView> lookup(const StringView& key) const;
[[nodiscard]] bool contains(const StringView& key) const;
[[nodiscard]] bool is_boot_profiling_enabled() const;
@ -76,9 +76,9 @@ public:
[[nodiscard]] bool disable_usb() const;
[[nodiscard]] bool disable_virtio() const;
[[nodiscard]] AHCIResetMode ahci_reset_mode() const;
[[nodiscard]] String userspace_init() const;
[[nodiscard]] StringView userspace_init() const;
[[nodiscard]] Vector<String> userspace_init_args() const;
[[nodiscard]] String root_device() const;
[[nodiscard]] StringView root_device() const;
[[nodiscard]] size_t switch_to_tty() const;
private: