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>

6 files changed, 0 insertions, 427 deletions

diff --git a/third_party/immer/test/map/B3.cpp b/third_party/immer/test/map/B3.cpp
deleted file mode 100644
index 61458a013537..000000000000
--- a/third_party/immer/test/map/B3.cpp
+++ /dev/null
@@ -1,18 +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/map.hpp>
-
-template <typename K,
-          typename T,
-          typename Hash = std::hash<K>,
-          typename Eq   = std::equal_to<K>>
-using test_map_t = immer::map<K, T, Hash, Eq, immer::default_memory_policy, 3u>;
-
-#define MAP_T test_map_t
-#include "generic.ipp"
diff --git a/third_party/immer/test/map/B6.cpp b/third_party/immer/test/map/B6.cpp
deleted file mode 100644
index 52da689c67b6..000000000000
--- a/third_party/immer/test/map/B6.cpp
+++ /dev/null
@@ -1,18 +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/map.hpp>
-
-template <typename K,
-          typename T,
-          typename Hash = std::hash<K>,
-          typename Eq   = std::equal_to<K>>
-using test_map_t = immer::map<K, T, Hash, Eq, immer::default_memory_policy, 6u>;
-
-#define MAP_T test_map_t
-#include "generic.ipp"
diff --git a/third_party/immer/test/map/default.cpp b/third_party/immer/test/map/default.cpp
deleted file mode 100644
index cb453c4f81e2..000000000000
--- a/third_party/immer/test/map/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/map.hpp>
-
-#define MAP_T ::immer::map
-#include "generic.ipp"
diff --git a/third_party/immer/test/map/gc.cpp b/third_party/immer/test/map/gc.cpp
deleted file mode 100644
index 818fb03aaa5b..000000000000
--- a/third_party/immer/test/map/gc.cpp
+++ /dev/null
@@ -1,25 +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/map.hpp>
-#include <immer/refcount/no_refcount_policy.hpp>
-
-using gc_memory = immer::memory_policy<immer::heap_policy<immer::gc_heap>,
-                                       immer::no_refcount_policy,
-                                       immer::gc_transience_policy,
-                                       false>;
-
-template <typename K,
-          typename T,
-          typename Hash = std::hash<K>,
-          typename Eq   = std::equal_to<K>>
-using test_map_t = immer::map<K, T, Hash, Eq, gc_memory, 3u>;
-
-#define MAP_T test_map_t
-#include "generic.ipp"
diff --git a/third_party/immer/test/map/generic.ipp b/third_party/immer/test/map/generic.ipp
deleted file mode 100644
index 18fc9d11f567..000000000000
--- a/third_party/immer/test/map/generic.ipp
+++ /dev/null
@@ -1,312 +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 MAP_T
-#error "define the map template to use in MAP_T"
-#include <immer/map.hpp>
-#define MAP_T ::immer::map
-#endif
-
-#include <immer/algorithm.hpp>
-
-#include "test/dada.hpp"
-#include "test/util.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<std::pair<conflictor, unsigned>>{};
-    auto vals_ = std::unordered_set<conflictor, hash_conflictor>{};
-    auto i     = 0u;
-    generate_n(back_inserter(vals), n, [&] {
-        auto newv = conflictor{};
-        do {
-            newv = {unsigned(gen() % (n / 2)), gen()};
-        } while (!vals_.insert(newv).second);
-        return std::pair<conflictor, unsigned>{newv, i++};
-    });
-    return vals;
-}
-
-auto make_test_map(unsigned n)
-{
-    auto s = MAP_T<unsigned, unsigned>{};
-    for (auto i = 0u; i < n; ++i)
-        s = s.insert({i, i});
-    return s;
-}
-
-auto make_test_map(const std::vector<std::pair<conflictor, unsigned>>& vals)
-{
-    auto s = MAP_T<conflictor, unsigned, hash_conflictor>{};
-    for (auto&& v : vals)
-        s = s.insert(v);
-    return s;
-}
-
-TEST_CASE("instantiation")
-{
-    SECTION("default")
-    {
-        auto v = MAP_T<int, int>{};
-        CHECK(v.size() == 0u);
-    }
-}
-
-TEST_CASE("basic insertion")
-{
-    auto v1 = MAP_T<int, int>{};
-    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("accessor")
-{
-    const auto n = 666u;
-    auto v       = make_test_map(n);
-    CHECK(v[0] == 0);
-    CHECK(v[42] == 42);
-    CHECK(v[665] == 665);
-    CHECK(v[666] == 0);
-    CHECK(v[1234] == 0);
-}
-
-TEST_CASE("at")
-{
-    const auto n = 666u;
-    auto v       = make_test_map(n);
-    CHECK(v.at(0) == 0);
-    CHECK(v.at(42) == 42);
-    CHECK(v.at(665) == 665);
-    CHECK_THROWS_AS(v.at(666), std::out_of_range&);
-    CHECK_THROWS_AS(v.at(1234), std::out_of_range&);
-}
-
-TEST_CASE("find")
-{
-    const auto n = 666u;
-    auto v       = make_test_map(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("equals and setting")
-{
-    const auto n = 666u;
-    auto v       = make_test_map(n);
-
-    CHECK(v == v);
-    CHECK(v != v.insert({1234, 42}));
-    CHECK(v != v.erase(32));
-    CHECK(v == v.insert({1234, 42}).erase(1234));
-    CHECK(v == v.erase(32).insert({32, 32}));
-
-    CHECK(v.set(1234, 42) == v.insert({1234, 42}));
-    CHECK(v.update(1234, [](auto&& x) { return x + 1; }) == v.set(1234, 1));
-    CHECK(v.update(42, [](auto&& x) { return x + 1; }) == v.set(42, 43));
-}
-
-TEST_CASE("iterator")
-{
-    const auto N = 666u;
-    auto v       = make_test_map(N);
-
-    SECTION("empty set")
-    {
-        auto s = MAP_T<unsigned, 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.first).second);
-        CHECK(seen.size() == v.size());
-    }
-
-    SECTION("iterator and collisions")
-    {
-        auto vals = make_values_with_collisions(N);
-        auto s    = make_test_map(vals);
-        auto seen = std::unordered_set<conflictor, hash_conflictor>{};
-        for (const auto& x : s)
-            CHECK(seen.insert(x.first).second);
-        CHECK(seen.size() == s.size());
-    }
-}
-
-TEST_CASE("accumulate")
-{
-    const auto n = 666u;
-    auto v       = make_test_map(n);
-
-    auto expected_n = [](auto n) { return n * (n - 1) / 2; };
-
-    SECTION("sum collection")
-    {
-        auto acc = [](unsigned acc, const std::pair<unsigned, unsigned>& x) {
-            return acc + x.first + x.second;
-        };
-        auto sum = immer::accumulate(v, 0u, acc);
-        CHECK(sum == 2 * expected_n(v.size()));
-    }
-
-    SECTION("sum collisions")
-    {
-        auto vals = make_values_with_collisions(n);
-        auto s    = make_test_map(vals);
-        auto acc  = [](unsigned r, std::pair<conflictor, unsigned> x) {
-            return r + x.first.v1 + x.first.v2 + x.second;
-        };
-        auto sum1 = std::accumulate(vals.begin(), vals.end(), 0u, acc);
-        auto sum2 = immer::accumulate(s, 0u, acc);
-        CHECK(sum1 == sum2);
-    }
-}
-
-TEST_CASE("update a lot")
-{
-    auto v = make_test_map(666u);
-
-    for (decltype(v.size()) i = 0; i < v.size(); ++i) {
-        v = v.update(i, [](auto&& x) { return x + 1; });
-        CHECK(v[i] == i + 1);
-    }
-}
-
-TEST_CASE("exception safety")
-{
-    constexpr auto n = 2666u;
-
-    using dadaist_map_t =
-        typename dadaist_wrapper<MAP_T<unsigned, unsigned>>::type;
-    using dadaist_conflictor_map_t = typename dadaist_wrapper<
-        MAP_T<conflictor, unsigned, hash_conflictor>>::type;
-
-    SECTION("update collisions")
-    {
-        auto v = dadaist_map_t{};
-        auto d = dadaism{};
-        for (auto i = 0u; i < n; ++i)
-            v = v.set(i, i);
-        for (auto i = 0u; i < v.size();) {
-            try {
-                auto s = d.next();
-                v      = v.update(i, [](auto x) { return x + 1; });
-                ++i;
-            } catch (dada_error) {}
-            for (auto i : test_irange(0u, i))
-                CHECK(v.at(i) == i + 1);
-            for (auto i : test_irange(i, n))
-                CHECK(v.at(i) == i);
-        }
-        CHECK(d.happenings > 0);
-        IMMER_TRACE_E(d.happenings);
-    }
-
-    SECTION("update collisisions")
-    {
-        auto vals = make_values_with_collisions(n);
-        auto v    = dadaist_conflictor_map_t{};
-        auto d    = dadaism{};
-        for (auto i = 0u; i < n; ++i)
-            v = v.insert(vals[i]);
-        for (auto i = 0u; i < v.size();) {
-            try {
-                auto s = d.next();
-                v      = v.update(vals[i].first, [](auto x) { return x + 1; });
-                ++i;
-            } catch (dada_error) {}
-            for (auto i : test_irange(0u, i))
-                CHECK(v.at(vals[i].first) == vals[i].second + 1);
-            for (auto i : test_irange(i, n))
-                CHECK(v.at(vals[i].first) == vals[i].second);
-        }
-        CHECK(d.happenings > 0);
-        IMMER_TRACE_E(d.happenings);
-    }
-}
-
-namespace {
-
-class KElem
-{
-public:
-    KElem(int* elem) { this->elem = elem; }
-
-    bool operator==(const KElem& other) const
-    {
-        return this->elem == other.elem;
-    }
-
-    bool operator!=(const KElem& other) const { return !(*this == other); }
-
-    int* elem;
-};
-
-struct HashBlock
-{
-    size_t operator()(const KElem& block) const noexcept
-    {
-        return (uintptr_t) block.elem & 0xffffffff00000000;
-    }
-};
-
-using map = immer::map<KElem, KElem, HashBlock, std::equal_to<KElem>>;
-
-TEST_CASE("issue 134")
-{
-    int a[100];
-    map m;
-    for (int i = 0; i < 100; i++) {
-        m = m.set(KElem(a + i), KElem(a + i));
-    }
-}
-
-} // namespace
diff --git a/third_party/immer/test/map/issue-56.cpp b/third_party/immer/test/map/issue-56.cpp
deleted file mode 100644
index 447c623ddad9..000000000000
--- a/third_party/immer/test/map/issue-56.cpp
+++ /dev/null
@@ -1,42 +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
-//
-
-// Thanks @dgel for reporting this issue
-// https://github.com/arximboldi/immer/issues/56
-
-#include <immer/flex_vector.hpp>
-#include <immer/map.hpp>
-#include <immer/vector.hpp>
-
-#include <catch.hpp>
-
-TEST_CASE("const map")
-{
-    const auto x = immer::map<std::string, int>{}.set("A", 1);
-    auto it      = x.begin();
-    CHECK(it->first == "A");
-    CHECK(it->second == 1);
-}
-
-TEST_CASE("const vector")
-{
-    const auto x =
-        immer::vector<std::pair<std::string, int>>{}.push_back({"A", 1});
-    auto it = x.begin();
-    CHECK(it->first == "A");
-    CHECK(it->second == 1);
-}
-
-TEST_CASE("const flex vector")
-{
-    const auto x =
-        immer::flex_vector<std::pair<std::string, int>>{}.push_back({"A", 1});
-    auto it = x.begin();
-    CHECK(it->first == "A");
-    CHECK(it->second == 1);
-}