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Make keymap fully constexpr

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This commit is contained in:
Maxime Coste 2019-03-16 11:54:56 +11:00
parent 47be98f1fc
commit 525684f4da
1 changed files with 32 additions and 3 deletions
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35
src/normal.cc
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@ -2159,10 +2159,39 @@ void force_redraw(Context& context, NormalParams)
}
}
template<typename T, MemoryDomain domain>
using KeymapBackend = Vector<T, domain>;
constexpr size_t keymap_max_size = 512;
static const HashMap<Key, NormalCmd, MemoryDomain::Undefined, KeymapBackend> keymap = {
template<typename T, MemoryDomain domain>
struct KeymapBackend : private Array<T, keymap_max_size>
{
using iterator = const T*;
using const_iterator = const T*;
constexpr KeymapBackend() = default;
constexpr KeymapBackend(std::initializer_list<T> items)
{
resize(items.size());
for (size_t i = 0; i < items.size(); ++i)
this->m_data[i] = *(items.begin() + i);
}
constexpr void resize(size_t s)
{
if (s > keymap_max_size)
throw runtime_error{"cannot resize"};
m_size = s;
}
constexpr size_t size() const { return m_size; }
using KeymapBackend::Array::begin;
using KeymapBackend::Array::end;
using KeymapBackend::Array::operator[];
private:
size_t m_size = 0;
};
static constexpr HashMap<Key, NormalCmd, MemoryDomain::Undefined, KeymapBackend> keymap = {
{ {'h'}, {"move left", move_cursor<CharCount, Backward>} },
{ {'j'}, {"move down", move_cursor<LineCount, Forward>} },
{ {'k'}, {"move up", move_cursor<LineCount, Backward>} },