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, 162 deletions

diff --git a/third_party/immer/extra/fuzzer/flex-vector-gc.cpp b/third_party/immer/extra/fuzzer/flex-vector-gc.cpp
deleted file mode 100644
index 00c302898675..000000000000
--- a/third_party/immer/extra/fuzzer/flex-vector-gc.cpp
+++ /dev/null
@@ -1,162 +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 "fuzzer_input.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 <array>
-
-using gc_memory = immer::memory_policy<immer::heap_policy<immer::gc_heap>,
-                                       immer::no_refcount_policy,
-                                       immer::gc_transience_policy,
-                                       false>;
-
-extern "C" int LLVMFuzzerTestOneInput(const std::uint8_t* data,
-                                      std::size_t size)
-{
-    constexpr auto var_count = 4;
-    constexpr auto bits      = 2;
-
-    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, var_count>{};
-    auto ts = std::array<transient_t, var_count>{};
-
-    auto is_valid_var = [&](auto idx) { return idx >= 0 && idx < var_count; };
-    auto is_valid_var_neq = [](auto other) {
-        return [=](auto idx) {
-            return idx >= 0 && idx < var_count && 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<char>(in, is_valid_var);
-        switch (read<char>(in)) {
-        case op_transient: {
-            auto src = read<char>(in, is_valid_var);
-            ts[dst]  = vs[src].transient();
-            break;
-        }
-        case op_persistent: {
-            auto src = read<char>(in, is_valid_var);
-            vs[dst]  = ts[src].persistent();
-            break;
-        }
-        case op_push_back: {
-            auto src = read<char>(in, is_valid_var);
-            vs[dst]  = vs[src].push_back(42);
-            break;
-        }
-        case op_update: {
-            auto src = read<char>(in, is_valid_var);
-            auto idx = read<size_t>(in, is_valid_index(vs[src]));
-            vs[dst]  = vs[src].update(idx, [](auto x) { return x + 1; });
-            break;
-        }
-        case op_take: {
-            auto src = read<char>(in, is_valid_var);
-            auto idx = read<size_t>(in, is_valid_size(vs[src]));
-            vs[dst]  = vs[src].take(idx);
-            break;
-        }
-        case op_drop: {
-            auto src = read<char>(in, is_valid_var);
-            auto idx = read<size_t>(in, is_valid_size(vs[src]));
-            vs[dst]  = vs[src].drop(idx);
-            break;
-        }
-        case op_concat: {
-            auto src  = read<char>(in, is_valid_var);
-            auto src2 = read<char>(in, is_valid_var);
-            if (can_concat(vs[src], vs[src2]))
-                vs[dst] = vs[src] + vs[src2];
-            break;
-        }
-        case op_push_back_mut: {
-            ts[dst].push_back(13);
-            break;
-        }
-        case op_update_mut: {
-            auto idx = read<size_t>(in, is_valid_index(ts[dst]));
-            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]));
-            ts[dst].take(idx);
-            break;
-        }
-        case op_prepend_mut: {
-            auto src = read<char>(in, is_valid_var_neq(dst));
-            if (can_concat(ts[dst], ts[src]))
-                ts[dst].prepend(ts[src]);
-            break;
-        }
-        case op_prepend_mut_move: {
-            auto src = read<char>(in, is_valid_var_neq(dst));
-            if (can_concat(ts[dst], ts[src])) {
-                ts[dst].prepend(std::move(ts[src]));
-                ts[src] = {};
-            }
-            break;
-        }
-        case op_append_mut: {
-            auto src = read<char>(in, is_valid_var_neq(dst));
-            if (can_concat(ts[dst], ts[src]))
-                ts[dst].append(ts[src]);
-            break;
-        }
-        case op_append_mut_move: {
-            auto src = read<char>(in, is_valid_var_neq(dst));
-            if (can_concat(ts[dst], ts[src])) {
-                ts[dst].append(std::move(ts[src]));
-                ts[src] = {};
-            }
-            break;
-        }
-        default:
-            break;
-        };
-        return true;
-    });
-}