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>

1 files changed, 0 insertions, 364 deletions

diff --git a/third_party/immer/test/flex_vector/fuzzed-4.cpp b/third_party/immer/test/flex_vector/fuzzed-4.cpp
deleted file mode 100644
index d9ecdd7fba7f..000000000000
--- a/third_party/immer/test/flex_vector/fuzzed-4.cpp
+++ /dev/null
@@ -1,364 +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 "extra/fuzzer/fuzzer_input.hpp"
-#include <array>
-#include <catch.hpp>
-#include <immer/flex_vector.hpp>
-#include <immer/flex_vector_transient.hpp>
-#include <immer/heap/gc_heap.hpp>
-#include <immer/refcount/no_refcount_policy.hpp>
-#include <iostream>
-
-#define IMMER_FUZZED_TRACE_ENABLE 0
-
-#if IMMER_FUZZED_TRACE_ENABLE
-#define IMMER_FUZZED_TRACE(...) std::cout << __VA_ARGS__ << std::endl;
-#else
-#define IMMER_FUZZED_TRACE(...)
-#endif
-
-using gc_memory = immer::memory_policy<immer::heap_policy<immer::gc_heap>,
-                                       immer::no_refcount_policy,
-                                       immer::gc_transience_policy,
-                                       false>;
-
-namespace {
-
-template <std::size_t VarCount = 4, unsigned Bits = 2>
-int run_input(const std::uint8_t* data, std::size_t size)
-{
-    using vector_t    = immer::flex_vector<int, gc_memory, Bits, Bits>;
-    using transient_t = typename vector_t::transient_type;
-    using size_t      = std::uint8_t;
-
-    auto vs = std::array<vector_t, VarCount>{};
-    auto ts = std::array<transient_t, VarCount>{};
-
-#if IMMER_FUZZED_TRACE_ENABLE
-    std::cout << "/// new test run" << std::endl;
-    for (auto i = 0; i < VarCount; ++i)
-        std::cout << "auto v" << i << " = vector_t{};" << std::endl;
-    for (auto i = 0; i < VarCount; ++i)
-        std::cout << "auto t" << i << " = transient_t{};" << std::endl;
-#endif
-
-    auto is_valid_var = [&](auto idx) { return idx >= 0 && idx < VarCount; };
-    auto is_valid_var_neq = [](auto other) {
-        return [=](auto idx) {
-            return idx >= 0 && idx < VarCount && idx != other;
-        };
-    };
-    auto is_valid_index = [](auto& v) {
-        return [&](auto idx) { return idx >= 0 && idx < v.size(); };
-    };
-    auto is_valid_size = [](auto& v) {
-        return [&](auto idx) { return idx >= 0 && idx <= v.size(); };
-    };
-    auto can_concat = [](auto&& v1, auto&& v2) {
-        using size_type = decltype(v1.size());
-        auto max        = std::numeric_limits<size_type>::max() >> (Bits * 4);
-        return v1.size() < max && v2.size() < max;
-    };
-
-    return fuzzer_input{data, size}.run([&](auto& in) {
-        enum ops
-        {
-            op_transient,
-            op_persistent,
-            op_push_back,
-            op_update,
-            op_take,
-            op_drop,
-            op_concat,
-            op_push_back_mut,
-            op_update_mut,
-            op_take_mut,
-            op_drop_mut,
-            op_prepend_mut,
-            op_prepend_mut_move,
-            op_append_mut,
-            op_append_mut_move,
-        };
-        auto dst = read<std::uint8_t>(in, is_valid_var);
-        switch (read<char>(in)) {
-        case op_transient: {
-            auto src = read<std::uint8_t>(in, is_valid_var);
-            IMMER_FUZZED_TRACE("t" << +dst << " = v" << +src
-                                   << ".transient();");
-            ts[dst] = vs[src].transient();
-            break;
-        }
-        case op_persistent: {
-            auto src = read<std::uint8_t>(in, is_valid_var);
-            IMMER_FUZZED_TRACE("v" << +dst << " = t" << +src
-                                   << ".persistent();");
-            vs[dst] = ts[src].persistent();
-            break;
-        }
-        case op_push_back: {
-            auto src = read<std::uint8_t>(in, is_valid_var);
-            IMMER_FUZZED_TRACE("v" << +dst << " = v" << +src
-                                   << ".push_back(42);");
-            vs[dst] = vs[src].push_back(42);
-            break;
-        }
-        case op_update: {
-            auto src = read<std::uint8_t>(in, is_valid_var);
-            auto idx = read<size_t>(in, is_valid_index(vs[src]));
-            IMMER_FUZZED_TRACE("v" << +dst << " = v" << +src << ".update("
-                                   << +idx
-                                   << ", [] (auto x) { return x + 1; });");
-            vs[dst] = vs[src].update(idx, [](auto x) { return x + 1; });
-            break;
-        }
-        case op_take: {
-            auto src = read<std::uint8_t>(in, is_valid_var);
-            auto idx = read<size_t>(in, is_valid_size(vs[src]));
-            IMMER_FUZZED_TRACE("v" << +dst << " = v" << +src << ".take(" << +idx
-                                   << ");");
-            vs[dst] = vs[src].take(idx);
-            break;
-        }
-        case op_drop: {
-            auto src = read<std::uint8_t>(in, is_valid_var);
-            auto idx = read<size_t>(in, is_valid_size(vs[src]));
-            IMMER_FUZZED_TRACE("v" << +dst << " = v" << +src << ".take(" << +idx
-                                   << ");");
-            vs[dst] = vs[src].drop(idx);
-            break;
-        }
-        case op_concat: {
-            auto src  = read<std::uint8_t>(in, is_valid_var);
-            auto src2 = read<std::uint8_t>(in, is_valid_var);
-            if (can_concat(vs[src], vs[src2])) {
-                IMMER_FUZZED_TRACE("v" << +dst << " = v" << +src << " + v"
-                                       << +src2 << ";");
-                vs[dst] = vs[src] + vs[src2];
-            }
-            break;
-        }
-        case op_push_back_mut: {
-            IMMER_FUZZED_TRACE("t" << +dst << ".push_back(13);");
-            ts[dst].push_back(13);
-            break;
-        }
-        case op_update_mut: {
-            auto idx = read<size_t>(in, is_valid_index(ts[dst]));
-            IMMER_FUZZED_TRACE("t" << +dst << ".update(" << +idx
-                                   << ", [] (auto x) { return x + 1; });");
-            ts[dst].update(idx, [](auto x) { return x + 1; });
-            break;
-        }
-        case op_take_mut: {
-            auto idx = read<size_t>(in, is_valid_size(ts[dst]));
-            IMMER_FUZZED_TRACE("t" << +dst << ").take(" << +idx << ");");
-            ts[dst].take(idx);
-            break;
-        }
-        case op_prepend_mut: {
-            auto src = read<std::uint8_t>(in, is_valid_var_neq(dst));
-            if (can_concat(ts[dst], ts[src])) {
-                IMMER_FUZZED_TRACE("t" << +dst << ".prepend(t" << +src << ");");
-                ts[dst].prepend(ts[src]);
-            }
-            break;
-        }
-        case op_prepend_mut_move: {
-            auto src = read<std::uint8_t>(in, is_valid_var_neq(dst));
-            if (can_concat(ts[dst], ts[src])) {
-                IMMER_FUZZED_TRACE("t" << +dst << ".prepend(std::move(t" << +src
-                                       << "));"
-                                       << " t" << +src << " = {};");
-                ts[dst].prepend(std::move(ts[src]));
-                ts[src] = {};
-            }
-            break;
-        }
-        case op_append_mut: {
-            auto src = read<std::uint8_t>(in, is_valid_var_neq(dst));
-            if (can_concat(ts[dst], ts[src])) {
-                IMMER_FUZZED_TRACE("t" << +dst << ".append(t" << +src << ");");
-                ts[dst].append(ts[src]);
-            }
-            break;
-        }
-        case op_append_mut_move: {
-            auto src = read<std::uint8_t>(in, is_valid_var_neq(dst));
-            if (can_concat(ts[dst], ts[src])) {
-                IMMER_FUZZED_TRACE("t" << +dst << ".append(std::move(t" << +src
-                                       << "));"
-                                       << " t" << +src << " = {};");
-                ts[dst].append(std::move(ts[src]));
-                ts[src] = {};
-            }
-            break;
-        }
-        default:
-            break;
-        };
-        return true;
-    });
-}
-
-} // namespace
-
-TEST_CASE("bug: concatenating transients")
-{
-    // When concatenating two transients vectors the nodes from the
-    // argument become aliased in the result.  As such, we need to
-    // reset the identitiy of the argument.
-    SECTION("simplified")
-    {
-        using vector_t = immer::flex_vector<int, gc_memory, 2, 2>;
-        auto t0        = vector_t{}.transient();
-        t0.push_back(42);
-        t0.push_back(42);
-        t0.push_back(42);
-        t0.push_back(42);
-        t0.push_back(42);
-        t0.push_back(42);
-        auto t1 = t0;
-        t1.append(t0);
-        t1.append(t0);
-        t0.append(t1);
-        t1.append(t0);
-    }
-
-#if __GNUC__ != 9
-    SECTION("")
-    {
-        constexpr std::uint8_t input[] = {
-            0x2, 0x2, 0x2, 0x2, 0x29, 0x32, 0x0, 0x0,  0x2,  0x2,  0x2,
-            0x2, 0x2, 0x2, 0x2, 0x2,  0x2,  0x2, 0x2,  0x2,  0x6,  0x2,
-            0x2, 0x2, 0x2, 0x2, 0x6,  0x2,  0x2, 0x2,  0x0,  0x38, 0x2,
-            0x0, 0x0, 0x2, 0x2, 0xd,  0x0,  0x0, 0x3b, 0xff, 0x3a, 0x2,
-            0xd, 0xd, 0x2, 0x0, 0x0,  0x10, 0xe, 0x0,  0xd,  0x0,  0x0,
-            0x2, 0x2, 0xd, 0x0, 0x1,  0x5,
-        };
-        CHECK(run_input(input, sizeof(input)) == 0);
-    }
-#endif
-}
-
-TEST_CASE("bug: concatenating moved transients")
-{
-    // A moved from concatenated transient is totally smashed, we can
-    // not do anything with it but reasign...
-    SECTION("simplified")
-    {
-        using vector_t    = immer::flex_vector<int, gc_memory, 2, 2>;
-        using transient_t = typename vector_t::transient_type;
-        auto v0           = vector_t{};
-        auto t0           = transient_t{};
-        auto t2           = transient_t{};
-        v0                = v0.push_back(42);
-        t2                = v0.transient();
-        v0                = v0 + v0;
-        v0                = v0 + v0;
-        v0                = v0 + v0;
-        v0                = v0 + v0;
-        t0                = v0.transient();
-        t0                = v0.transient();
-        t0.append(std::move(t2));
-        t2 = {};
-        t2.append(std::move(t0));
-    }
-
-#if __GNUC__ != 9
-    SECTION("")
-    {
-        constexpr std::uint8_t input[] = {
-            0x0,  0x2, 0x0,  0x2,  0x0,  0x0,  0x0,  0x6,  0x0,  0x0,  0x0,
-            0x6,  0x0, 0x0,  0x0,  0x9d, 0x0,  0x6,  0x0,  0x0,  0x0,  0x6,
-            0x0,  0x0, 0x0,  0x9d, 0x28, 0x0,  0x0,  0x0,  0x0,  0x0,  0xf7,
-            0xc5, 0x0, 0xa,  0xa,  0x0,  0xfa, 0xe7, 0xff, 0xe7, 0xff, 0x0,
-            0xe,  0x2, 0x9,  0x0,  0x28, 0x2,  0xe,  0x0,  0x0,  0x2,  0xd,
-            0x0,  0x0, 0x28, 0x0,  0xd,  0x2,  0x5,  0x0,  0x2,
-        };
-        CHECK(run_input(input, sizeof(input)) == 0);
-    }
-#endif
-
-    SECTION("simplified")
-    {
-        using vector_t    = immer::flex_vector<int, gc_memory, 2, 2>;
-        using transient_t = typename vector_t::transient_type;
-        auto v0           = vector_t{};
-        auto t0           = transient_t{};
-        auto t2           = transient_t{};
-        v0                = v0.push_back(42);
-        v0                = v0.push_back(42);
-        v0                = v0 + v0;
-        t0                = v0.transient();
-        t2.prepend(std::move(t0));
-        t0 = {};
-        t0 = v0.transient();
-        t0.push_back(13);
-        t2.append(std::move(t0));
-        t0 = {};
-        t0 = v0.transient();
-        t0.push_back(13);
-        t2.prepend(std::move(t0));
-        t0 = {};
-    }
-
-#if __GNUC__ != 9
-    SECTION("")
-    {
-        return;
-        constexpr std::uint8_t input[] = {
-            0x0,  0x2, 0x0,  0x0,  0x2, 0xb7, 0x1, 0x36, 0x40, 0x0,  0x0,
-            0x0,  0x0, 0xb6, 0x0,  0x2, 0x0,  0x0, 0x6,  0xe,  0x0,  0x0,
-            0xfe, 0x0, 0x0,  0xff, 0x0, 0x2,  0xc, 0xff, 0xfc, 0x29, 0x0,
-            0x0,  0x0, 0x0,  0x0,  0x7, 0x2,  0xe, 0xff, 0xfc, 0x29, 0x0,
-            0x0,  0x0, 0x0,  0x0,  0x7, 0x3,  0x0, 0x0,  0x2,  0xc,  0x2,
-            0xc,  0x0, 0xd,  0x0,  0x0, 0x0,  0x0, 0x25, 0x6,
-        };
-        CHECK(run_input(input, sizeof(input)) == 0);
-    }
-#endif
-}
-
-TEST_CASE("bug: aegsdas")
-{
-    SECTION("simplified")
-    {
-        using vector_t    = immer::flex_vector<int, gc_memory, 2, 2>;
-        using transient_t = typename vector_t::transient_type;
-        auto v2           = vector_t{};
-        auto t0           = transient_t{};
-        auto t1           = transient_t{};
-        v2                = v2.push_back(42);
-        v2                = v2.push_back(42);
-        v2                = v2.push_back(42);
-        v2                = v2.push_back(42);
-        v2                = v2.push_back(42);
-        t0                = v2.transient();
-        t1.prepend(t0);
-        t1.prepend(t0);
-        t1.prepend(t0);
-        t0.prepend(std::move(t1));
-        t1 = {};
-    }
-
-#if __GNUC__ != 9
-    SECTION("")
-    {
-        constexpr std::uint8_t input[] = {
-            0xff, 0xff, 0x2, 0x2,  0x2, 0x2,  0x2,  0x2,  0x2,  0x2,  0x2,
-            0x82, 0x2,  0x2, 0x2,  0x2, 0x2,  0x2,  0x0,  0x0,  0x3d, 0x0,
-            0x0,  0x0,  0x2, 0x84, 0x0, 0x3b, 0x1,  0xb,  0x0,  0xa,  0x1,
-            0xb,  0x0,  0x0, 0x3,  0x2, 0x0,  0x3b, 0x1,  0xb,  0x1,  0x0,
-            0x0,  0xc,  0xb, 0x1,  0x8, 0xff, 0xff, 0xfc, 0xfd, 0x0,  0x3b,
-            0x3,  0x2,  0x0, 0x3b, 0x1, 0x9,  0x1,  0x3b,
-        };
-        CHECK(run_input(input, sizeof(input)) == 0);
-    }
-#endif
-}