chore(3p/immer): Remove vendored copy of immer r/2029

We ended up dropping the use of this library again.

Change-Id: I2c44cd22a6128d23f87a582402bf5fb84991d608
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2292
Tested-by: BuildkiteCI
Reviewed-by: Profpatsch <mail@profpatsch.de>

5 files changed, 0 insertions, 529 deletions

diff --git a/third_party/immer/test/set/B3.cpp b/third_party/immer/test/set/B3.cpp
deleted file mode 100644
index 192b0f8e9afd..000000000000
--- a/third_party/immer/test/set/B3.cpp
+++ /dev/null
@@ -1,17 +0,0 @@
-//
-// immer: immutable data structures for C++
-// Copyright (C) 2016, 2017, 2018 Juan Pedro Bolivar Puente
-//
-// This software is distributed under the Boost Software License, Version 1.0.
-// See accompanying file LICENSE or copy at http://boost.org/LICENSE_1_0.txt
-//
-
-#include <immer/set.hpp>
-
-template <typename T,
-          typename Hash = std::hash<T>,
-          typename Eq   = std::equal_to<T>>
-using test_set_t = immer::set<T, Hash, Eq, immer::default_memory_policy, 3u>;
-
-#define SET_T test_set_t
-#include "generic.ipp"
diff --git a/third_party/immer/test/set/B6.cpp b/third_party/immer/test/set/B6.cpp
deleted file mode 100644
index 7fe3e5b7728c..000000000000
--- a/third_party/immer/test/set/B6.cpp
+++ /dev/null
@@ -1,17 +0,0 @@
-//
-// immer: immutable data structures for C++
-// Copyright (C) 2016, 2017, 2018 Juan Pedro Bolivar Puente
-//
-// This software is distributed under the Boost Software License, Version 1.0.
-// See accompanying file LICENSE or copy at http://boost.org/LICENSE_1_0.txt
-//
-
-#include <immer/set.hpp>
-
-template <typename T,
-          typename Hash = std::hash<T>,
-          typename Eq   = std::equal_to<T>>
-using test_set_t = immer::set<T, Hash, Eq, immer::default_memory_policy, 6u>;
-
-#define SET_T test_set_t
-#include "generic.ipp"
diff --git a/third_party/immer/test/set/default.cpp b/third_party/immer/test/set/default.cpp
deleted file mode 100644
index 8e6611a4ea7e..000000000000
--- a/third_party/immer/test/set/default.cpp
+++ /dev/null
@@ -1,12 +0,0 @@
-//
-// immer: immutable data structures for C++
-// Copyright (C) 2016, 2017, 2018 Juan Pedro Bolivar Puente
-//
-// This software is distributed under the Boost Software License, Version 1.0.
-// See accompanying file LICENSE or copy at http://boost.org/LICENSE_1_0.txt
-//
-
-#include <immer/set.hpp>
-
-#define SET_T ::immer::set
-#include "generic.ipp"
diff --git a/third_party/immer/test/set/gc.cpp b/third_party/immer/test/set/gc.cpp
deleted file mode 100644
index 098c8c97d087..000000000000
--- a/third_party/immer/test/set/gc.cpp
+++ /dev/null
@@ -1,24 +0,0 @@
-//
-// immer: immutable data structures for C++
-// Copyright (C) 2016, 2017, 2018 Juan Pedro Bolivar Puente
-//
-// This software is distributed under the Boost Software License, Version 1.0.
-// See accompanying file LICENSE or copy at http://boost.org/LICENSE_1_0.txt
-//
-
-#include <immer/heap/gc_heap.hpp>
-#include <immer/refcount/no_refcount_policy.hpp>
-#include <immer/set.hpp>
-
-using gc_memory = immer::memory_policy<immer::heap_policy<immer::gc_heap>,
-                                       immer::no_refcount_policy,
-                                       immer::gc_transience_policy,
-                                       false>;
-
-template <typename T,
-          typename Hash = std::hash<T>,
-          typename Eq   = std::equal_to<T>>
-using test_set_t = immer::set<T, Hash, Eq, gc_memory, 3u>;
-
-#define SET_T test_set_t
-#include "generic.ipp"
diff --git a/third_party/immer/test/set/generic.ipp b/third_party/immer/test/set/generic.ipp
deleted file mode 100644
index 8d75373787e2..000000000000
--- a/third_party/immer/test/set/generic.ipp
+++ /dev/null
@@ -1,459 +0,0 @@
-//
-// immer: immutable data structures for C++
-// Copyright (C) 2016, 2017, 2018 Juan Pedro Bolivar Puente
-//
-// This software is distributed under the Boost Software License, Version 1.0.
-// See accompanying file LICENSE or copy at http://boost.org/LICENSE_1_0.txt
-//
-
-#ifndef SET_T
-#error "define the set template to use in SET_T"
-#include <immer/set.hpp>
-#define SET_T ::immer::set
-#endif
-
-#include "test/dada.hpp"
-#include "test/util.hpp"
-
-#include <immer/algorithm.hpp>
-
-#include <catch.hpp>
-
-#include <random>
-#include <unordered_set>
-
-template <typename T = unsigned>
-auto make_generator()
-{
-    auto engine = std::default_random_engine{42};
-    auto dist   = std::uniform_int_distribution<T>{};
-    return std::bind(dist, engine);
-}
-
-struct conflictor
-{
-    unsigned v1;
-    unsigned v2;
-
-    bool operator==(const conflictor& x) const
-    {
-        return v1 == x.v1 && v2 == x.v2;
-    }
-};
-
-struct hash_conflictor
-{
-    std::size_t operator()(const conflictor& x) const { return x.v1; }
-};
-
-auto make_values_with_collisions(unsigned n)
-{
-    auto gen   = make_generator();
-    auto vals  = std::vector<conflictor>{};
-    auto vals_ = std::unordered_set<conflictor, hash_conflictor>{};
-    generate_n(back_inserter(vals), n, [&] {
-        auto newv = conflictor{};
-        do {
-            newv = {unsigned(gen() % (n / 2)), gen()};
-        } while (!vals_.insert(newv).second);
-        return newv;
-    });
-    return vals;
-}
-
-auto make_test_set(unsigned n)
-{
-    auto s = SET_T<unsigned>{};
-    for (auto i = 0u; i < n; ++i)
-        s = s.insert(i);
-    return s;
-}
-
-auto make_test_set(const std::vector<conflictor>& vals)
-{
-    auto s = SET_T<conflictor, hash_conflictor>{};
-    for (auto&& v : vals)
-        s = s.insert(v);
-    return s;
-}
-
-template <std::size_t BufLen>
-struct unaligned_str
-{
-    std::array<char, BufLen> m_data{};
-
-    unaligned_str() = default;
-    unaligned_str(const std::string& in)
-    {
-        for (std::size_t i = 0; i < std::min(m_data.size() - 1, in.size()); i++)
-            m_data[i] = in[i];
-    }
-    unaligned_str(const char* in)
-        : unaligned_str{std::string{in}}
-    {}
-
-    std::string str() const { return m_data.data(); }
-
-    bool operator==(unaligned_str other) const
-    {
-        return m_data == other.m_data;
-    }
-
-    bool operator!=(unaligned_str other) const
-    {
-        return m_data != other.m_data;
-    }
-};
-
-namespace std {
-template <size_t BufLen>
-struct hash<unaligned_str<BufLen>>
-{
-    size_t operator()(const unaligned_str<BufLen>& str) const
-    {
-        return std::hash<std::string>{}(str.str());
-    }
-};
-} // namespace std
-
-template <size_t BufLen>
-void check_with_len()
-{
-    auto v = SET_T<unaligned_str<BufLen>>{};
-
-    for (int i = 0; i < 1; i++)
-        v = v.insert(std::to_string(i));
-
-    CHECK(v.count("0") == 1);
-}
-
-TEST_CASE("insert type with no alignment requirement")
-{
-    check_with_len<1>();
-    check_with_len<9>();
-    check_with_len<15>();
-    check_with_len<17>();
-}
-
-TEST_CASE("instantiation")
-{
-    SECTION("default")
-    {
-        auto v = SET_T<unsigned>{};
-        CHECK(v.size() == 0u);
-    }
-}
-
-TEST_CASE("basic insertion")
-{
-    auto v1 = SET_T<unsigned>{};
-    CHECK(v1.count(42) == 0);
-
-    auto v2 = v1.insert(42);
-    CHECK(v1.count(42) == 0);
-    CHECK(v2.count(42) == 1);
-
-    auto v3 = v2.insert(42);
-    CHECK(v1.count(42) == 0);
-    CHECK(v2.count(42) == 1);
-    CHECK(v3.count(42) == 1);
-}
-
-TEST_CASE("insert a lot")
-{
-    constexpr auto N = 666u;
-
-    auto gen  = make_generator();
-    auto vals = std::vector<unsigned>{};
-    generate_n(back_inserter(vals), N, gen);
-    auto s = SET_T<unsigned>{};
-
-    for (auto i = 0u; i < N; ++i) {
-        s = s.insert(vals[i]);
-        CHECK(s.size() == i + 1);
-        for (auto j : test_irange(0u, i + 1))
-            CHECK(s.count(vals[j]) == 1);
-        for (auto j : test_irange(i + 1u, N))
-            CHECK(s.count(vals[j]) == 0);
-    }
-}
-
-TEST_CASE("insert conflicts")
-{
-    constexpr auto N = 666u;
-    auto vals        = make_values_with_collisions(N);
-    auto s           = SET_T<conflictor, hash_conflictor>{};
-    for (auto i = 0u; i < N; ++i) {
-        s = s.insert(vals[i]);
-        CHECK(s.size() == i + 1);
-        for (auto j : test_irange(0u, i + 1))
-            CHECK(s.count(vals[j]) == 1);
-        for (auto j : test_irange(i + 1u, N))
-            CHECK(s.count(vals[j]) == 0);
-    }
-}
-
-TEST_CASE("erase a lot")
-{
-    constexpr auto N = 666u;
-    auto gen         = make_generator();
-    auto vals        = std::vector<unsigned>{};
-    generate_n(back_inserter(vals), N, gen);
-
-    auto s = SET_T<unsigned>{};
-    for (auto i = 0u; i < N; ++i)
-        s = s.insert(vals[i]);
-
-    for (auto i = 0u; i < N; ++i) {
-        s = s.erase(vals[i]);
-        CHECK(s.size() == N - i - 1);
-        for (auto j : test_irange(0u, i + 1))
-            CHECK(s.count(vals[j]) == 0);
-        for (auto j : test_irange(i + 1u, N))
-            CHECK(s.count(vals[j]) == 1);
-    }
-}
-
-TEST_CASE("erase conflicts")
-{
-    constexpr auto N = 666u;
-    auto vals        = make_values_with_collisions(N);
-    auto s           = SET_T<conflictor, hash_conflictor>{};
-    for (auto i = 0u; i < N; ++i)
-        s = s.insert(vals[i]);
-
-    for (auto i = 0u; i < N; ++i) {
-        s = s.erase(vals[i]);
-        CHECK(s.size() == N - i - 1);
-        for (auto j : test_irange(0u, i + 1))
-            CHECK(s.count(vals[j]) == 0);
-        for (auto j : test_irange(i + 1u, N))
-            CHECK(s.count(vals[j]) == 1);
-    }
-}
-
-TEST_CASE("accumulate")
-{
-    const auto n = 666u;
-    auto v       = make_test_set(n);
-
-    auto expected_n = [](auto n) { return n * (n - 1) / 2; };
-
-    SECTION("sum collection")
-    {
-        auto sum = immer::accumulate(v, 0u);
-        CHECK(sum == expected_n(v.size()));
-    }
-
-    SECTION("sum collisions")
-    {
-        auto vals = make_values_with_collisions(n);
-        auto s    = make_test_set(vals);
-        auto acc  = [](unsigned r, conflictor x) { return r + x.v1 + x.v2; };
-        auto sum1 = std::accumulate(vals.begin(), vals.end(), 0, acc);
-        auto sum2 = immer::accumulate(s, 0u, acc);
-        CHECK(sum1 == sum2);
-    }
-}
-
-TEST_CASE("find")
-{
-    const auto n = 666u;
-    auto v       = make_test_set(n);
-    CHECK(*v.find(0) == 0);
-    CHECK(*v.find(42) == 42);
-    CHECK(*v.find(665) == 665);
-    CHECK(v.find(666) == nullptr);
-    CHECK(v.find(1234) == nullptr);
-}
-
-TEST_CASE("iterator")
-{
-    const auto N = 666u;
-    auto v       = make_test_set(N);
-
-    SECTION("empty set")
-    {
-        auto s = SET_T<unsigned>{};
-        CHECK(s.begin() == s.end());
-    }
-
-    SECTION("works with range loop")
-    {
-        auto seen = std::unordered_set<unsigned>{};
-        for (const auto& x : v)
-            CHECK(seen.insert(x).second);
-        CHECK(seen.size() == v.size());
-    }
-
-    SECTION("works with standard algorithms")
-    {
-        auto s = std::vector<unsigned>(N);
-        std::iota(s.begin(), s.end(), 0u);
-        std::equal(v.begin(), v.end(), s.begin(), s.end());
-    }
-
-    SECTION("iterator and collisions")
-    {
-        auto vals = make_values_with_collisions(N);
-        auto s    = make_test_set(vals);
-        auto seen = std::unordered_set<conflictor, hash_conflictor>{};
-        for (const auto& x : s)
-            CHECK(seen.insert(x).second);
-        CHECK(seen.size() == s.size());
-    }
-}
-
-struct non_default
-{
-    unsigned value;
-    non_default() = delete;
-    operator unsigned() const { return value; }
-
-#if IMMER_DEBUG_PRINT
-    friend std::ostream& operator<<(std::ostream& os, non_default x)
-    {
-        os << "ND{" << x.value << "}";
-        return os;
-    }
-#endif
-};
-
-namespace std {
-
-template <>
-struct hash<non_default>
-{
-    std::size_t operator()(const non_default& x)
-    {
-        return std::hash<decltype(x.value)>{}(x.value);
-    }
-};
-
-} // namespace std
-
-TEST_CASE("non default")
-{
-    const auto n = 666u;
-
-    auto v = SET_T<non_default>{};
-    for (auto i = 0u; i < n; ++i)
-        v = v.insert({i});
-
-    CHECK(v.size() == n);
-}
-
-TEST_CASE("equals")
-{
-    const auto n = 666u;
-    auto v       = make_test_set(n);
-
-    CHECK(v == v);
-    CHECK(v != v.insert(1234));
-    CHECK(v == v.erase(1234));
-    CHECK(v == v.insert(1234).erase(1234));
-    CHECK(v == v.erase(64).insert(64));
-    CHECK(v != v.erase(1234).insert(1234));
-}
-
-TEST_CASE("equals collisions")
-{
-    const auto n = 666u;
-    auto vals    = make_values_with_collisions(n);
-    auto v       = make_test_set(vals);
-
-    CHECK(v == v);
-    CHECK(v != v.erase(vals[42]));
-    CHECK(v == v.erase(vals[42]).insert(vals[42]));
-    CHECK(v ==
-          v.erase(vals[42]).erase(vals[13]).insert(vals[42]).insert(vals[13]));
-    CHECK(v ==
-          v.erase(vals[42]).erase(vals[13]).insert(vals[13]).insert(vals[42]));
-}
-
-TEST_CASE("exception safety")
-{
-    constexpr auto n = 2666u;
-
-    using dadaist_set_t = typename dadaist_wrapper<SET_T<unsigned>>::type;
-    using dadaist_conflictor_set_t =
-        typename dadaist_wrapper<SET_T<conflictor, hash_conflictor>>::type;
-
-    SECTION("insert")
-    {
-        auto v = dadaist_set_t{};
-        auto d = dadaism{};
-        for (auto i = 0u; v.size() < n;) {
-            try {
-                auto s = d.next();
-                v      = v.insert({i});
-                ++i;
-            } catch (dada_error) {}
-            for (auto i : test_irange(0u, i))
-                CHECK(v.count({i}) == 1);
-        }
-        CHECK(d.happenings > 0);
-        IMMER_TRACE_E(d.happenings);
-    }
-
-    SECTION("insert collisions")
-    {
-        auto vals = make_values_with_collisions(n);
-        auto v    = dadaist_conflictor_set_t{};
-        auto d    = dadaism{};
-        for (auto i = 0u; v.size() < n;) {
-            try {
-                auto s = d.next();
-                v      = v.insert({vals[i]});
-                ++i;
-            } catch (dada_error) {}
-            for (auto i : test_irange(0u, i))
-                CHECK(v.count({vals[i]}) == 1);
-        }
-        CHECK(d.happenings > 0);
-        IMMER_TRACE_E(d.happenings);
-    }
-
-    SECTION("erase")
-    {
-        auto v = dadaist_set_t{};
-        auto d = dadaism{};
-        for (auto i = 0u; i < n; ++i)
-            v = v.insert({i});
-        for (auto i = 0u; v.size() > 0;) {
-            try {
-                auto s = d.next();
-                v      = v.erase({i});
-                ++i;
-            } catch (dada_error) {}
-            for (auto i : test_irange(0u, i))
-                CHECK(v.count({i}) == 0);
-            for (auto i : test_irange(i, n))
-                CHECK(v.count({i}) == 1);
-        }
-        CHECK(d.happenings > 0);
-        IMMER_TRACE_E(d.happenings);
-    }
-
-    SECTION("erase collisisions")
-    {
-        auto vals = make_values_with_collisions(n);
-        auto v    = dadaist_conflictor_set_t{};
-        auto d    = dadaism{};
-        for (auto i = 0u; i < n; ++i)
-            v = v.insert({vals[i]});
-        for (auto i = 0u; v.size() > 0;) {
-            try {
-                auto s = d.next();
-                v      = v.erase({vals[i]});
-                ++i;
-            } catch (dada_error) {}
-            for (auto i : test_irange(0u, i))
-                CHECK(v.count({vals[i]}) == 0);
-            for (auto i : test_irange(i, n))
-                CHECK(v.count({vals[i]}) == 1);
-        }
-        CHECK(d.happenings > 0);
-        IMMER_TRACE_E(d.happenings);
-    }
-}