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AK: Add JSON object/array for-each methods for fallible callbacks

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This allows the provided callback to return an ErrorOr-like type to
propagate errors back to the caller.
This commit is contained in:
Timothy Flynn 2022-11-17 08:15:01 -05:00 • committed by Linus Groh
parent 56ab529752
commit 13b18a182a
3 changed files with 129 additions and 0 deletions
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13
AK/JsonObject.h
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@ -7,6 +7,8 @@
#pragma once
#include <AK/Concepts.h>
#include <AK/Error.h>
#include <AK/HashMap.h>
#include <AK/JsonArray.h>
#include <AK/JsonObjectSerializer.h>
@ -16,6 +18,9 @@
namespace AK {
class JsonObject {
template<typename Callback>
using CallbackErrorType = decltype(declval<Callback>()(declval<String const&>(), declval<JsonValue const&>()).release_error());
public:
JsonObject() = default;
~JsonObject() = default;
@ -142,6 +147,14 @@ public:
callback(member.key, member.value);
}
template<FallibleFunction<String const&, JsonValue const&> Callback>
ErrorOr<void, CallbackErrorType<Callback>> try_for_each_member(Callback&& callback) const
{
for (auto const& member : m_members)
TRY(callback(member.key, member.value));
return {};
}
bool remove(StringView key)
{
return m_members.remove(key);