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sparse_set: ::contiguous function

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This commit is contained in:
Michele Caini
2023-01-16 11:07:10 +01:00
parent bd00e797a9
commit ed17a2c48b
2 changed files with 70 additions and 0 deletions
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8
src/entt/entity/sparse_set.hpp
View File

@@ -530,6 +530,14 @@ public:
return packed.empty();
}
/**
* @brief Checks whether a sparse set is fully packed.
* @return True if the sparse set is fully packed, false otherwise.
*/
[[nodiscard]] bool contiguous() const noexcept {
return (free_list == null);
}
/**
* @brief Direct access to the internal packed array.
* @return A pointer to the internal packed array.

62
test/entt/entity/sparse_set.cpp
View File

@@ -26,6 +26,7 @@ TEST(SparseSet, Functionalities) {
ASSERT_EQ(set.capacity(), 42u);
ASSERT_TRUE(set.empty());
ASSERT_EQ(set.size(), 0u);
ASSERT_TRUE(set.contiguous());
ASSERT_EQ(std::as_const(set).begin(), std::as_const(set).end());
ASSERT_EQ(set.begin(), set.end());
ASSERT_FALSE(set.contains(entt::entity{0}));
@@ -40,6 +41,7 @@ TEST(SparseSet, Functionalities) {
ASSERT_FALSE(set.empty());
ASSERT_EQ(set.size(), 1u);
ASSERT_TRUE(set.contiguous());
ASSERT_NE(std::as_const(set).begin(), std::as_const(set).end());
ASSERT_NE(set.begin(), set.end());
ASSERT_FALSE(set.contains(entt::entity{0}));
@@ -54,6 +56,7 @@ TEST(SparseSet, Functionalities) {
ASSERT_TRUE(set.empty());
ASSERT_EQ(set.size(), 0u);
ASSERT_TRUE(set.contiguous());
ASSERT_EQ(std::as_const(set).begin(), std::as_const(set).end());
ASSERT_EQ(set.begin(), set.end());
ASSERT_FALSE(set.contains(entt::entity{0}));
@@ -73,6 +76,7 @@ TEST(SparseSet, Functionalities) {
ASSERT_TRUE(set.empty());
ASSERT_EQ(set.size(), 0u);
ASSERT_TRUE(set.contiguous());
ASSERT_EQ(std::as_const(set).begin(), std::as_const(set).end());
ASSERT_EQ(set.begin(), set.end());
ASSERT_FALSE(set.contains(entt::entity{0}));
@@ -915,6 +919,64 @@ TEST(SparseSet, Clear) {
ASSERT_EQ(set.find(entt::entity{9}), set.end());
}
TEST(SparseSet, Contiguous) {
entt::sparse_set swap_and_pop{entt::deletion_policy::swap_and_pop};
entt::sparse_set in_place{entt::deletion_policy::in_place};
const entt::entity entity{42};
const entt::entity other{3};
ASSERT_TRUE(swap_and_pop.contiguous());
ASSERT_TRUE(in_place.contiguous());
swap_and_pop.push(entity);
in_place.push(entity);
swap_and_pop.push(other);
in_place.push(other);
ASSERT_TRUE(swap_and_pop.contiguous());
ASSERT_TRUE(in_place.contiguous());
swap_and_pop.erase(entity);
in_place.erase(entity);
ASSERT_TRUE(swap_and_pop.contiguous());
ASSERT_FALSE(in_place.contiguous());
swap_and_pop.push(entity);
in_place.push(entity);
ASSERT_TRUE(swap_and_pop.contiguous());
ASSERT_TRUE(in_place.contiguous());
swap_and_pop.erase(other);
in_place.erase(other);
ASSERT_TRUE(swap_and_pop.contiguous());
ASSERT_FALSE(in_place.contiguous());
in_place.compact();
ASSERT_TRUE(swap_and_pop.contiguous());
ASSERT_TRUE(in_place.contiguous());
swap_and_pop.push(other);
in_place.push(other);
swap_and_pop.erase(entity);
in_place.erase(entity);
ASSERT_TRUE(swap_and_pop.contiguous());
ASSERT_FALSE(in_place.contiguous());
swap_and_pop.clear();
in_place.clear();
ASSERT_TRUE(swap_and_pop.contiguous());
ASSERT_TRUE(in_place.contiguous());
}
TEST(SparseSet, Iterator) {
using iterator = typename entt::sparse_set::iterator;