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AK+Kernel+LibELF: Remove the need for IteratorDecision::Continue
By constraining two implementations, the compiler will select the best fitting one. All this will require is duplicating the implementation and simplifying for the `void` case. This constraining also informs both the caller and compiler by passing the callback parameter types as part of the constraint (e.g.: `IterationFunction<int>`). Some `for_each` functions in LibELF only take functions which return `void`. This is a minimal correctness check, as it removes one way for a function to incompletely do something. There seems to be a possible idiom where inside a lambda, a `return;` is the same as `continue;` in a for-loop.
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25 changed files with 311 additions and 127 deletions
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@ -8,6 +8,7 @@
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#include <AK/Atomic.h>
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#include <AK/Badge.h>
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#include <AK/Concepts.h>
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#include <AK/Noncopyable.h>
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#include <AK/Vector.h>
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@ -733,7 +734,7 @@ public:
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static size_t processor_count() { return processors().size(); }
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template<typename Callback>
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template<IteratorFunction<Processor&> Callback>
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static inline IterationDecision for_each(Callback callback)
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{
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auto& procs = processors();
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@ -745,6 +746,16 @@ public:
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return IterationDecision::Continue;
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}
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template<VoidFunction<Processor&> Callback>
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static inline IterationDecision for_each(Callback callback)
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{
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auto& procs = processors();
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size_t count = procs.size();
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for (size_t i = 0; i < count; i++)
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callback(*procs[i]);
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return IterationDecision::Continue;
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}
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ALWAYS_INLINE u8 physical_address_bit_width() const { return m_physical_address_bit_width; }
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ALWAYS_INLINE ProcessorInfo& info() { return *m_info; }
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