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#pragma once
#include "compat/assert.hpp"
#include "compat/exception.hpp"
#include "compat/os-file.hpp"
#include "atlas-loader.hpp"
#include "atlas-loader-storage.hpp"
#include "loader/loader.hpp"
#include <memory>
#include <cr/ArrayView.h>
#include <cr/Optional.h>
namespace floormat::loader_detail {
template<typename ATLAS, typename TRAITS>
atlas_loader<ATLAS, TRAITS>::atlas_loader(TRAITS&& traits): // NOLINT(*-rvalue-reference-param-not-moved)
t{Utility::move(traits)}
{}
template<typename ATLAS, typename TRAITS>
atlas_loader<ATLAS, TRAITS>::atlas_loader() requires std::is_default_constructible_v<TRAITS>: atlas_loader{TRAITS{}} {}
template<typename TRAITS>
atlas_loader(TRAITS&& traits) noexcept -> atlas_loader<TRAITS, typename TRAITS::Atlas>;
template<typename ATLAS, typename TRAITS>
auto atlas_loader<ATLAS, TRAITS>::ensure_atlas_list() -> ArrayView<const Cell>
{
if (!s.cell_array.empty()) [[likely]]
return { s.cell_array.data(), s.cell_array.size() };
t.ensure_atlases_loaded(s);
fm_assert(!s.cell_array.empty());
return { s.cell_array.data(), s.cell_array.size() };
}
template<typename ATLAS, typename TRAITS>
const std::shared_ptr<ATLAS>& atlas_loader<ATLAS, TRAITS>::get_atlas(StringView name, loader_policy p)
{
ensure_atlas_list();
auto* const invalid_atlas = const_cast<Cell*>(&t.make_invalid_atlas(s));
fm_debug_assert(invalid_atlas);
fm_debug_assert(t.atlas_of(*invalid_atlas));
switch (p)
{
using enum loader_policy;
case error:
case ignore:
case warn:
break;
default:
fm_abort("invalid loader_policy (%d)", (int)p);
}
if (name == loader.INVALID) [[unlikely]]
switch (p)
{
using enum loader_policy;
case error:
goto error;
case ignore:
case warn:
return t.atlas_of(*invalid_atlas);
}
fm_soft_assert(loader.check_atlas_name(name));
if (auto it = s.name_map.find(name); it != s.name_map.end()) [[likely]]
{
if (it->second == invalid_atlas)
{
switch (p)
{
using enum loader_policy;
case error:
goto error;
case warn:
case ignore:
return t.atlas_of(*invalid_atlas);
}
}
else if (const auto& atlas = t.atlas_of(*it->second))
return t.atlas_of(*it->second);
else
return t.atlas_of(*it->second) = t.make_atlas(name, *it->second);
}
else if (Optional<Cell> c_{t.make_cell(name)})
{
s.free_cells.reserve(16);
Pointer<Cell> cptr{InPlace, std::move(*c_)};
{ Cell& c{*cptr};
fm_assert(!t.name_of(c)); fm_assert(!t.atlas_of(c));
t.atlas_of(c) = t.make_atlas(name, c);
fm_assert(!t.name_of(c)); fm_assert(t.atlas_of(c));
t.name_of(c) = name;
fm_assert(t.name_of(*t.atlas_of(c)) == name);
}
s.free_cells.push_back(Utility::move(cptr));
Cell& back{*s.free_cells.back()};
s.name_map[StringView{t.name_of(back)}] = &back;
}
else
{
switch (p)
{
using enum loader_policy;
case error:
goto error;
case warn:
goto missing_warn;
case ignore:
return t.atlas_of(*invalid_atlas);
}
}
std::unreachable();
fm_assert(false);
error:
fm_throw("no such atlas '{}'"_cf, name);
missing_warn:
s.missing_atlas_names.push_back(String { AllocatedInit, name });
s.name_map[ s.missing_atlas_names.back() ] = invalid_atlas;
if (name != loader.INVALID)
DBG_nospace << t.loader_name() << " '" << name << "' doesn't exist";
return t.atlas_of(*invalid_atlas);
}
template<typename ATLAS, typename TRAITS>
auto atlas_loader<ATLAS, TRAITS>::make_atlas(StringView name, const Cell& c) -> std::shared_ptr<Atlas>
{
fm_assert(name != "<invalid>"_s);
fm_soft_assert(!c.name || t.name_of(c) == name);
fm_soft_assert(loader.check_atlas_name(name));
return t.make_atlas(name, c);
}
template<typename ATLAS, typename TRAITS>
auto atlas_loader<ATLAS, TRAITS>::get_invalid_atlas() -> const Cell&
{
const auto& cell = t.make_invalid_atlas(s);
fm_assert(t.atlas_of(cell));
return cell;
}
} // namespace floormat::loader_detail
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