Merge branch 'develop' into feature/docs

.gitignore

 _build/
 __pycache__/
-.peru/
 .vscode/
 .mypy_cache/
-*.dsd/
 _prebuilt/
-.dds-repo-lock
+.pytest_cache

INDEX.lmi

-Type: Index
-
-Package: taywee-args; external/taywee-args.lmp
-Package: spdlog; external/spdlog.lmp
-Package: ms-third; external/ms-third.lmp
-Package: ranges-v3; external/ranges-v3.lmp
-Package: nlohmann-json; external/nlohmann-json.lmp

azure-pipelines.yml

     steps:
       - script: |
           echo Loading VS environment
-          call "C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Enterprise\\Common7\\Tools\\vsdevcmd" -arch=x64 || exit 1
+          call "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\Common7\Tools\vsdevcmd" -arch=x64 || exit 1
           echo Executing Build and Tests
-          python -u tools/ci.py --cxx cl.exe -T tools\\msvc.dds || exit 1
+          reg add HKLM\SYSTEM\CurrentControlSet\Control\FileSystem /v LongPathsEnabled /t REG_DWORD /d 1 /f || exit 1
+          python -m pip install pytest pytest-xdist || exit 1
+          python -u tools/ci.py -B download -T tools\msvc.dds || exit 1
         displayName: Full CI
       - publish: _build/dds.exe
         artifact: DDS Executable - Windows VS2019
     pool:
       vmImage: ubuntu-18.04
     steps:
-      - script: sudo apt update -y && sudo apt install -y python3-minimal g++-8
+      - script: |
+          set -eu
+          sudo apt update -y
+          sudo apt install -y python3-minimal g++-9 ccache
+          python3 -m pip install pytest pytest-xdist
         displayName: Prepare System
-      - script: python3 -u tools/ci.py --cxx g++-8 -T tools/gcc-8.dds
+      - script: python3 -u tools/ci.py -B download -T tools/gcc-9.dds
         displayName: Full CI
       - publish: _build/dds
         artifact: DDS Executable - Linux
     pool:
       vmImage: macOS-10.14
     steps:
-      - script: brew install gcc@8
+      - script: brew install gcc@9 ccache
         displayName: Prepare System
-      - script: python3 -u tools/ci.py --cxx g++-8 -T tools/gcc-8.dds
+      - script: |
+          set -eu
+          python3 -m pip install pytest pytest-xdist
+          python3 -u tools/ci.py -B download -T tools/gcc-9.dds
         displayName: Build and Run Unit Tests
       - publish: _build/dds
         artifact: DDS Executable - macOS

catalog.json

+{
+    "version": 1,
+    "packages": {
+        "range-v3": {
+            "0.10.0": {
+                "git": {
+                    "url": "https://github.com/ericniebler/range-v3.git",
+                    "ref": "0.10.0",
+                    "auto-lib": "Niebler/range-v3"
+                },
+                "depends": {}
+            }
+        },
+        "spdlog": {
+            "1.4.2": {
+                "git": {
+                    "url": "https://github.com/gabime/spdlog.git",
+                    "ref": "v1.4.2",
+                    "auto-lib": "spdlog/spdlog"
+                },
+                "depends": {}
+            }
+        },
+        "nlohmann-json": {
+            "3.7.1": {
+                "git": {
+                    "url": "https://github.com/vector-of-bool/json.git",
+                    "ref": "dds/3.7.1"
+                },
+                "depends": {}
+            }
+        },
+        "ms-wil": {
+            "2019.11.10": {
+                "git": {
+                    "url": "https://github.com/vector-of-bool/wil.git",
+                    "ref": "dds/2019.11.10"
+                },
+                "depends": {}
+            }
+        },
+        "neo-sqlite3": {
+            "0.2.2": {
+                "git": {
+                    "url": "https://github.com/vector-of-bool/neo-sqlite3.git",
+                    "ref": "0.2.2"
+                },
+                "depends": {}
+            }
+        },
+        "neo-fun": {
+            "0.1.0": {
+                "git": {
+                    "url": "https://github.com/vector-of-bool/neo-fun.git",
+                    "ref": "0.1.0"
+                },
+                "depends": {}
+            }
+        },
+        "semver": {
+            "0.2.1": {
+                "git": {
+                    "url": "https://github.com/vector-of-bool/semver.git",
+                    "ref": "0.2.1"
+                },
+                "depends": {}
+            }
+        },
+        "pubgrub": {
+            "0.1.2": {
+                "git": {
+                    "url": "https://github.com/vector-of-bool/pubgrub.git",
+                    "ref": "0.1.2"
+                },
+                "depends": {}
+            }
+        }
+    }
+}

external/args.lml

-Type: Library
-
-Name: args
-
-Include-Path: repo/taywee-args/include

external/ms-third.lmp

-Type: Package
-
-Name: ms-third
-Namespace: Microsoft
-
-Library: wil.lml

external/nlohmann-json.lml

-Type: Library
-Name: json
-
-Include-Path: repo/nlohmann-json/include

external/nlohmann-json.lmp

-Type: Package
-Name: nlohmann-json
-Namespace: nlohmann
-
-Library: nlohmann-json.lml

external/ranges-v3.lml

-Type: Library
-
-Name: range-v3
-Include-Path: repo/range-v3/include

external/ranges-v3.lmp

-Type: Package
-
-Name: ranges-v3
-Namespace: Niebler
-
-Library: ranges-v3.lml

external/repo/neo-buffer/.gitignore

-_build/
-.vscode/

external/repo/neo-buffer/.gitrepo

-; DO NOT EDIT (unless you know what you are doing)
-;
-; This subdirectory is a git "subrepo", and this file is maintained by the
-; git-subrepo command. See https://github.com/git-commands/git-subrepo#readme
-;
-[subrepo]
-	remote = git@github.com:vector-of-bool/neo-buffer.git
-	branch = develop
-	commit = 9461eded7f661b31bcdf4f8760ebe4ebc83e9630
-	parent = 4bc28954ef34869a5b5ad65094c6f56a23937f8b
-	method = merge
-	cmdver = 0.4.0

external/repo/neo-buffer/library.dds

-Name: buffer

external/repo/neo-buffer/package.dds

-Name: neo-buffer
-Namespace: neo
-Version: 0.1.0

external/repo/neo-buffer/src/neo/base_buffer.hpp

-#pragma once
-
-#include <cstddef>
-#include <iterator>
-
-namespace neo {
-
-namespace detail {
-
-class single_buffer_iter_sentinel {};
-
-template <typename Buffer>
-class single_buffer_iter {
-    Buffer _buf;
-    bool   _dead = false;
-
-public:
-    using difference_type   = std::ptrdiff_t;
-    using value_type        = Buffer;
-    using pointer           = const value_type*;
-    using reference         = const value_type&;
-    using iterator_category = std::forward_iterator_tag;
-
-    constexpr single_buffer_iter(Buffer b) noexcept
-        : _buf(b) {}
-
-    constexpr reference operator*() const noexcept { return _buf; }
-    constexpr pointer   operator->() const noexcept { return &_buf; }
-
-    constexpr bool operator==(single_buffer_iter_sentinel) const noexcept { return _dead; }
-    constexpr bool operator!=(single_buffer_iter_sentinel) const noexcept { return !_dead; }
-    constexpr bool operator==(single_buffer_iter o) const noexcept { return _dead == o._dead; }
-    constexpr bool operator!=(single_buffer_iter o) const noexcept { return !(*this == o); }
-
-    constexpr single_buffer_iter operator++(int) noexcept {
-        auto me = *this;
-        _dead   = true;
-        return me;
-    }
-
-    constexpr single_buffer_iter& operator++() noexcept {
-        _dead = true;
-        return *this;
-    }
-};
-
-}  // namespace detail
-
-template <typename T>
-constexpr std::byte* byte_pointer(T* ptr) noexcept requires std::is_trivial_v<T> {
-    auto void_ = static_cast<void*>(ptr);
-    return static_cast<std::byte*>(void_);
-}
-
-template <typename T>
-constexpr const std::byte* byte_pointer(const T* ptr) noexcept requires std::is_trivial_v<T> {
-    auto void_ = static_cast<const void*>(ptr);
-    return static_cast<const std::byte*>(void_);
-}
-
-} // namespace neo

external/repo/neo-buffer/src/neo/buffer.cpp

-#include "./buffer.hpp"

external/repo/neo-buffer/src/neo/buffer.hpp

-#pragma once
-
-#include <neo/const_buffer.hpp>
-#include <neo/mutable_buffer.hpp>
-
-#include <string>
-#include <string_view>
-#include <type_traits>
-
-namespace neo {
-
-constexpr mutable_buffer buffer(const mutable_buffer& b) noexcept { return b; }
-constexpr mutable_buffer buffer(const mutable_buffer& b, mutable_buffer::size_type s) noexcept {
-    auto min_size = s > b.size() ? b.size() : s;
-    return mutable_buffer(b.data(), min_size);
-}
-
-constexpr const_buffer buffer(const const_buffer& b) noexcept { return b; }
-constexpr const_buffer buffer(const const_buffer& b, const_buffer::size_type s) noexcept {
-    auto min_size = s > b.size() ? b.size() : s;
-    return const_buffer(b.data(), min_size);
-}
-
-// #############################################################################
-/**
- * Create a mutable buffer from an opaque pointer to void
- */
-constexpr mutable_buffer buffer(void* ptr, mutable_buffer::size_type s) noexcept {
-    return mutable_buffer(static_cast<std::byte*>(ptr), s);
-}
-
-/**
- * Create an immutable buffer from an opaque pointer to void
- */
-constexpr const_buffer buffer(const void* ptr, const_buffer::size_type s) noexcept {
-    return const_buffer(static_cast<const std::byte*>(ptr), s);
-}
-
-// #############################################################################
-/**
- * Create a mutable buffer that refers to the bytes of a trivial object.
- */
-template <typename Trivial,
-          typename
-          = std::enable_if_t<!std::is_const_v<Trivial> && !std::is_same_v<Trivial, mutable_buffer>>>
-constexpr mutable_buffer buffer(Trivial& item, std::size_t max_size = sizeof(Trivial)) {
-    auto min_size = max_size > sizeof(item) ? sizeof(item) : max_size;
-    return mutable_buffer(byte_pointer(std::addressof(item)), min_size);
-}
-
-/**
- * Create an immutable buffer that refers to the bytes of a trivial object.
- */
-template <
-    typename Trivial,
-    typename = std::enable_if_t<
-        std::is_const_v<
-            Trivial> && !std::is_same_v<Trivial, mutable_buffer> && !std::is_same_v<Trivial, const_buffer>>>
-constexpr const_buffer buffer(Trivial& item, std::size_t max_size = sizeof(Trivial)) {
-    auto min_size = std::min(sizeof(item), max_size);
-    return const_buffer(byte_pointer(std::addressof(item)), min_size);
-}
-
-// #############################################################################
-/**
- * Create a mutable buffer referring to the characters of a basic_string object
- */
-template <typename Char, typename Traits, typename Alloc>
-constexpr mutable_buffer buffer(std::basic_string<Char, Traits, Alloc>& str, std::size_t max_size) {
-    auto use_size = max_size > str.size() ? str.size() : max_size;
-    return buffer(str.data(), use_size);
-}
-
-template <typename Char, typename Traits, typename Alloc>
-constexpr mutable_buffer buffer(std::basic_string<Char, Traits, Alloc>& str) {
-    return buffer(str, str.size());
-}
-
-/**
- * Create an immutable buffer refering to the characters of a basic_string object
- */
-template <typename Char, typename Traits, typename Alloc>
-constexpr const_buffer buffer(const std::basic_string<Char, Traits, Alloc>& str,
-                              std::size_t                                   max_size) {
-    auto use_size = max_size > str.size() ? str.size() : max_size;
-    return buffer(str.data(), use_size);
-}
-
-template <typename Char, typename Traits, typename Alloc>
-constexpr const_buffer buffer(const std::basic_string<Char, Traits, Alloc>& str) {
-    return buffer(str, str.size());
-}
-
-// #############################################################################
-/**
- * Create an immutable buffer referring to the characters of a basic_string_view
- */
-template <typename Char, typename Traits>
-constexpr const_buffer buffer(std::basic_string_view<Char, Traits> sv, std::size_t max_size) {
-    auto use_size = max_size > sv.size() ? sv.size() : max_size;
-    return buffer(sv.data(), use_size);
-}
-
-template <typename Char, typename Traits>
-constexpr const_buffer buffer(std::basic_string_view<Char, Traits> sv) {
-    return buffer(sv, sv.size());
-}
-
-}  // namespace neo

external/repo/neo-buffer/src/neo/buffer.test.cpp

-#include <neo/buffer.hpp>
-
-#include <neo/buffer.test.hpp>
-#include <neo/buffer_algorithm.hpp>
-
-#include <array>
-#include <string>
-
-struct my_simple_struct {
-    int a;
-    int b;
-};
-
-int main() {
-    // std::string s = "I am a string!";
-    // auto s_buf = neo::buffer(s);
-    // CHECK(s_buf.data() == s.data());
-
-    my_simple_struct foo;
-    foo.a = 12;
-    foo.b = 3;
-
-    neo::mutable_buffer pod_buf = neo::buffer(foo);
-    CHECK(pod_buf.size() == sizeof(foo));
-
-    my_simple_struct bar;
-    neo::buffer_copy(neo::buffer(bar), pod_buf);
-    CHECK(bar.a == foo.a);
-    CHECK(bar.b == foo.b);
-
-    bar.b = 55;
-
-    std::array<char, sizeof bar> buf;
-    neo::buffer_copy(neo::buffer(buf), neo::buffer(bar));
-
-    neo::buffer_copy(neo::buffer(foo), neo::buffer(buf));
-    CHECK(foo.b == 55);
-}

external/repo/neo-buffer/src/neo/buffer.test.hpp

-#pragma once
-
-#include <iostream>
-
-#define CHECK(...)                                                                                 \
-    do {                                                                                           \
-        if (!(__VA_ARGS__)) {                                                                      \
-            std::cerr << "Check failed: " << (#__VA_ARGS__) << '\n';                               \
-            return 1;                                                                              \
-        }                                                                                          \
-    } while (0)

external/repo/neo-buffer/src/neo/buffer_algorithm.hpp

-#pragma once
-
-#include <neo/buffer_concepts.hpp>
-#include <neo/const_buffer.hpp>
-#include <neo/mutable_buffer.hpp>
-
-#include <algorithm>
-#include <cstddef>
-#include <cstring>
-
-namespace neo {
-
-template <typename Seq>
-constexpr std::size_t buffer_size(const Seq& seq) {
-    auto        iter = buffer_sequence_begin(seq);
-    const auto  stop = buffer_sequence_end(seq);
-    std::size_t size = 0;
-    while (iter != stop) {
-        size += static_cast<std::size_t>(iter->size());
-        ++iter;
-    }
-    return size;
-}
-
-template <mutable_buffer_sequence MutableSeq, const_buffer_sequence ConstSeq>
-constexpr std::size_t
-buffer_copy(const MutableSeq& dest, const ConstSeq& src, std::size_t max_copy) {
-    auto        remaining_to_copy = max_copy;
-    std::size_t n_copied          = 0;
-    auto        dest_iter         = buffer_sequence_begin(dest);
-    const auto  dest_stop         = buffer_sequence_end(dest);
-    auto        src_iter          = buffer_sequence_begin(src);
-    const auto  src_stop          = buffer_sequence_end(dest);
-
-    std::size_t src_offset  = 0;
-    std::size_t dest_offset = 0;
-
-    while (dest_iter != dest_stop && src_iter != src_stop && remaining_to_copy) {
-        const_buffer   src_buf  = *src_iter + src_offset;
-        mutable_buffer dest_buf = *dest_iter + dest_offset;
-
-        const auto copy_now
-            = std::min(src_buf.size(), std::min(dest_buf.size(), remaining_to_copy));
-        std::memcpy(dest_buf.data(), src_buf.data(), copy_now);
-        n_copied += copy_now;
-        src_buf += n_copied;
-        dest_buf += n_copied;
-        src_offset += n_copied;
-        dest_offset += n_copied;
-        if (src_buf.size() == 0) {
-            ++src_iter;
-            src_offset = 0;
-        }
-        if (dest_buf.size() == 0) {
-            ++dest_iter;
-            dest_offset = 0;
-        }
-    }
-
-    return 0;
-}
-
-template <typename MutableSeq, typename ConstSeq>
-constexpr std::size_t buffer_copy(const MutableSeq& dest, const ConstSeq& src) {
-    auto src_size  = buffer_size(src);
-    auto dest_size = buffer_size(dest);
-    auto min_size  = (src_size > dest_size) ? dest_size : src_size;
-    return buffer_copy(dest, src, min_size);
-}
-
-}  // namespace neo

external/repo/neo-buffer/src/neo/buffer_algorithm.test.cpp

-#include <neo/buffer_algorithm.hpp>
-
-#include <neo/buffer.test.hpp>
-
-#include <neo/const_buffer.hpp>
-
-#include <string_view>
-
-int main() {
-    auto buf      = neo::const_buffer("A string");
-    auto buf_iter = neo::buffer_sequence_begin(buf);
-    CHECK(buf_iter->data() == buf.data());
-    CHECK(buf_iter != neo::buffer_sequence_end(buf));
-
-    CHECK(neo::buffer_size(buf) == buf.size());
-
-    // neo::buffer_size(12);
-}

external/repo/neo-buffer/src/neo/buffer_concepts.hpp

-#pragma once
-
-#ifndef NEO_CONCEPT
-#if defined(__GNUC__) && __GNUC__ < 9
-#define NEO_CONCEPT concept bool
-#else
-#define NEO_CONCEPT concept
-#endif
-#endif
-
-#include <neo/buffer_seq_iter.hpp>
-#include <neo/const_buffer.hpp>
-#include <neo/mutable_buffer.hpp>
-
-#include <iterator>
-
-namespace neo {
-
-template <typename T>
-NEO_CONCEPT const_buffer_sequence_iterator = requires(T iter) {
-    typename std::iterator_traits<T>::value_type;
-    std::is_convertible_v<typename std::iterator_traits<T>::value_type, const_buffer>;
-};
-
-template <typename T>
-NEO_CONCEPT mutable_buffer_sequence_iterator
-    = const_buffer_sequence_iterator<T>&& requires(T iter) {
-    std::is_convertible_v<typename std::iterator_traits<T>::value_type, mutable_buffer>;
-};
-
-template <typename T>
-NEO_CONCEPT const_buffer_sequence = requires(T seq) {
-    { buffer_sequence_begin(seq) }
-    ->const_buffer_sequence_iterator;
-    buffer_sequence_end(seq);
-    { buffer_sequence_begin(seq) != buffer_sequence_end(seq) }
-    ->bool;
-};
-
-template <typename T>
-NEO_CONCEPT mutable_buffer_sequence = const_buffer_sequence<T>&& requires(T seq) {
-    { buffer_sequence_begin(seq) }
-    ->mutable_buffer_sequence_iterator;
-};
-
-}  // namespace neo

external/repo/neo-buffer/src/neo/buffer_seq_iter.hpp

-#pragma once
-
-#include <utility>
-
-namespace neo {
-
-constexpr inline struct buffer_sequence_begin_fn {
-    template <typename T>
-    decltype(auto) operator()(T&& t) const requires requires {
-        buffer_sequence_begin(t);
-    }
-    { return buffer_sequence_begin(t); }
-
-    template <typename T>
-    decltype(auto) operator()(T&& t) const requires requires {
-        t.buffer_sequence_begin();
-    }
-    { return t.buffer_sequence_begin(); }
-
-    template <typename T>
-    decltype(auto) operator()(T&& t) const requires requires {
-        _impl_buffer_sequence_begin(t);
-    }
-    { return _impl_buffer_sequence_begin(t); }
-} buffer_sequence_begin;
-
-inline struct buffer_sequence_end_fn {
-    template <typename T>
-    decltype(auto) operator()(T&& t) const requires requires {
-        buffer_sequence_end(t);
-    }
-    { return buffer_sequence_end(t); }
-
-    template <typename T>
-    decltype(auto) operator()(T&& t) const requires requires {
-        t.buffer_sequence_end();
-    }
-    { return t.buffer_sequence_end(); }
-
-    template <typename T>
-    decltype(auto) operator()(T&& t) const requires requires {
-        _impl_buffer_sequence_end(t);
-    }
-    { return _impl_buffer_sequence_end(t); }
-} buffer_sequence_end;
-
-}  // namespace neo

external/repo/neo-buffer/src/neo/const_buffer.hpp

-#pragma once
-
-#include <neo/base_buffer.hpp>
-#include <neo/mutable_buffer.hpp>
-
-#include <cassert>
-#include <cstddef>
-#include <string_view>
-
-namespace neo {
-
-/**
- * A type that represents a view to a readonly segment of contiguous memory.
- */
-class const_buffer {
-public:
-    using pointer   = const std::byte*;
-    using size_type = std::size_t;
-
-private:
-    pointer   _data = nullptr;
-    size_type _size = 0;
-
-public:
-    constexpr const_buffer() noexcept = default;
-    constexpr const_buffer(pointer ptr, size_type size) noexcept
-        : _data(ptr)
-        , _size(size) {}
-
-    constexpr const_buffer(mutable_buffer buf)
-        : _data(buf.data())
-        , _size(buf.size()) {}
-
-    explicit constexpr const_buffer(std::string_view sv)
-        : _data(byte_pointer(sv.data()))
-        , _size(sv.size()) {}
-
-    constexpr pointer   data() const noexcept { return _data; }
-    constexpr pointer   data_end() const noexcept { return _data + size(); }
-    constexpr size_type size() const noexcept { return _size; }
-
-    constexpr const_buffer& operator+=(size_type s) noexcept {
-        assert(s <= size() && "Advanced neo::const_buffer past-the-end");
-        _data += s;
-        _size -= s;
-        return *this;
-    }
-};
-
-inline constexpr const_buffer operator+(const_buffer buf, const_buffer::size_type s) noexcept {
-    auto copy = buf;
-    copy += s;
-    return copy;
-}
-
-inline constexpr auto _impl_buffer_sequence_begin(const_buffer buf) noexcept {
-    return detail::single_buffer_iter(buf);
-}
-
-inline constexpr auto _impl_buffer_sequence_end(const_buffer) noexcept {
-    return detail::single_buffer_iter_sentinel();
-}
-
-}  // namespace neo

external/repo/neo-buffer/src/neo/const_buffer.test.cpp

-#include <neo/buffer.test.hpp>
-#include <neo/const_buffer.hpp>
-
-#include <iostream>
-
-int main() {
-    neo::const_buffer buf;
-    CHECK(buf.size() == 0);
-
-    buf = neo::const_buffer("meow");
-    CHECK(buf.size() == 4);
-    auto buf2 = buf + 3;
-    CHECK(buf2.size() == 1);
-    CHECK(buf2.data()[0] == std::byte('w'));
-    buf2 += 1;
-    CHECK(buf2.size() == 0);
-}

external/repo/neo-buffer/src/neo/mutable_buffer.hpp

-#pragma once
-
-#include <neo/base_buffer.hpp>
-
-#include <cstddef>
-#include <iterator>
-#include <type_traits>
-
-namespace neo {
-
-class mutable_buffer {
-public:
-    using pointer   = std::byte*;
-    using size_type = std::size_t;
-
-private:
-    pointer   _data = nullptr;
-    size_type _size = 0;
-
-public:
-    constexpr mutable_buffer() noexcept = default;
-    constexpr mutable_buffer(pointer p, size_type size) noexcept
-        : _data(p)
-        , _size(size) {}
-
-    constexpr mutable_buffer& operator+=(size_type s) noexcept {
-        _data += s;
-        _size -= s;
-        return *this;
-    }
-
-    constexpr pointer   data() const noexcept { return _data; }
-    constexpr pointer   data_end() const noexcept { return _data + size(); }
-    constexpr size_type size() const noexcept { return _size; }
-};
-
-inline constexpr mutable_buffer operator+(mutable_buffer            buf,
-                                          mutable_buffer::size_type s) noexcept {
-    auto copy = buf;
-    copy += s;
-    return copy;
-}
-
-inline constexpr auto _impl_buffer_sequence_begin(mutable_buffer buf) noexcept {
-    return detail::single_buffer_iter(buf);
-}
-
-inline constexpr auto _impl_buffer_sequence_end(mutable_buffer) noexcept {
-    return detail::single_buffer_iter_sentinel();
-}
-
-}  // namespace neo

external/repo/neo-buffer/src/neo/mutable_buffer.test.cpp

-#include <neo/mutable_buffer.hpp>
-
-int main() {}

external/repo/neo-buffer/toolchain.dds

-Compiler-ID: GNU
-C++-Compiler: g++-8
-C++-Version: C++17
-Flags: -fconcepts

external/repo/nlohmann-json/library.dds

-Name: json

external/repo/nlohmann-json/package.dds

-Name: nlohmann-json
-Namespace: nlohmann
-Version: 3.7.0

external/repo/range-v3/include/concepts/swap.hpp

-/// \file
-// Concepts library
-//
-//  Copyright Eric Niebler 2013-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-
-#ifndef CPP_SWAP_HPP
-#define CPP_SWAP_HPP
-
-#include <tuple>
-#include <utility>
-#include <type_traits>
-#include <meta/meta.hpp>
-
-// Note: constexpr implies inline, to retain the same visibility
-// C++14 constexpr functions are inline in C++11
-#if (defined(__cpp_constexpr) && __cpp_constexpr >= 201304L) ||\
-    (!defined(__cpp_constexpr) && __cplusplus >= 201402L)
-#define CPP_CXX14_CONSTEXPR constexpr
-#else
-#define CPP_CXX14_CONSTEXPR inline
-#endif
-
-#ifndef CPP_CXX_INLINE_VARIABLES
-#ifdef __cpp_inline_variables // TODO: fix this if SD-6 picks another name
-#define CPP_CXX_INLINE_VARIABLES __cpp_inline_variables
-// TODO: remove once clang defines __cpp_inline_variables (or equivalent)
-#elif defined(__clang__) && \
-    (__clang_major__ > 3 || __clang_major__ == 3 && __clang_minor__ == 9) && \
-    __cplusplus > 201402L
-#define CPP_CXX_INLINE_VARIABLES 201606L
-#else
-#define CPP_CXX_INLINE_VARIABLES __cplusplus
-#endif  // __cpp_inline_variables
-#endif  // CPP_CXX_INLINE_VARIABLES
-
-#if defined(_MSC_VER) && !defined(__clang__)
-#define CPP_WORKAROUND_MSVC_895622 // Error when phase 1 name binding finds only deleted function
-#endif
-
-#if CPP_CXX_INLINE_VARIABLES < 201606L
-#define CPP_INLINE_VAR
-#define CPP_INLINE_VARIABLE(type, name)                                         \
-    inline namespace                                                            \
-    {                                                                           \
-        constexpr auto &name = ::concepts::detail::static_const<type>::value;   \
-    }                                                                           \
-    /**/
-#else  // CPP_CXX_INLINE_VARIABLES >= 201606L
-#define CPP_INLINE_VAR inline
-#define CPP_INLINE_VARIABLE(type, name)                                         \
-    inline constexpr type name{};                                               \
-    /**/
-#endif // CPP_CXX_INLINE_VARIABLES
-
-#if CPP_CXX_INLINE_VARIABLES < 201606L
-#define CPP_DEFINE_CPO(type, name)                                              \
-    inline namespace                                                            \
-    {                                                                           \
-        constexpr auto &name = ::concepts::detail::static_const<type>::value;   \
-    }                                                                           \
-    /**/
-#else  // CPP_CXX_INLINE_VARIABLES >= 201606L
-#define CPP_DEFINE_CPO(type, name)                                              \
-    inline namespace _                                                          \
-    {                                                                           \
-        inline constexpr type name{};                                           \
-    }                                                                           \
-    /**/
-#endif // CPP_CXX_INLINE_VARIABLES
-
-#if defined(_MSC_VER) && !defined(__clang__)
-#define CPP_DIAGNOSTIC_IGNORE_INIT_LIST_LIFETIME
-#else // ^^^ defined(_MSC_VER) ^^^ / vvv !defined(_MSC_VER) vvv
-#if defined(__GNUC__) || defined(__clang__)
-#define CPP_PRAGMA(X) _Pragma(#X)
-#define CPP_DIAGNOSTIC_IGNORE_PRAGMAS \
-    CPP_PRAGMA(GCC diagnostic ignored "-Wpragmas")
-#define CPP_DIAGNOSTIC_IGNORE(X) \
-    CPP_DIAGNOSTIC_IGNORE_PRAGMAS \
-    CPP_PRAGMA(GCC diagnostic ignored "-Wunknown-pragmas") \
-    CPP_PRAGMA(GCC diagnostic ignored X)
-#define CPP_DIAGNOSTIC_IGNORE_INIT_LIST_LIFETIME \
-    CPP_DIAGNOSTIC_IGNORE("-Wunknown-warning-option") \
-    CPP_DIAGNOSTIC_IGNORE("-Winit-list-lifetime")
-#else
-#define CPP_DIAGNOSTIC_IGNORE_INIT_LIST_LIFETIME
-#endif
-#endif // MSVC/Generic configuration switch
-
-namespace concepts
-{
-    /// \cond
-    namespace detail
-    {
-        template<typename T>
-        CPP_INLINE_VAR constexpr bool is_movable_v =
-            std::is_object<T>::value &&
-            std::is_move_constructible<T>::value &&
-            std::is_move_assignable<T>::value;
-
-        template<typename T>
-        struct static_const
-        {
-            static constexpr T const value {};
-        };
-        template<typename T>
-        constexpr T const static_const<T>::value;
-    }
-    /// \endcond
-
-    template<typename T>
-    struct is_swappable;
-
-    template<typename T>
-    struct is_nothrow_swappable;
-
-    template<typename T, typename U>
-    struct is_swappable_with;
-
-    template<typename T, typename U>
-    struct is_nothrow_swappable_with;
-
-    template<typename T, typename U = T>
-    CPP_CXX14_CONSTEXPR
-    meta::if_c<
-        std::is_move_constructible<T>::value &&
-        std::is_assignable<T &, U>::value, T>
-    exchange(T &t, U &&u)
-        noexcept(
-            std::is_nothrow_move_constructible<T>::value &&
-            std::is_nothrow_assignable<T &, U>::value)
-    {
-        T tmp((T &&) t);
-        t = (U &&) u;
-        CPP_DIAGNOSTIC_IGNORE_INIT_LIST_LIFETIME
-        return tmp;
-    }
-
-    /// \cond
-    namespace adl_swap_detail
-    {
-        struct nope
-        {};
-
-        // Intentionally create an ambiguity with std::swap, which is
-        // (possibly) unconstrained.
-        template<typename T>
-        nope swap(T &, T &) = delete;
-
-        template<typename T, std::size_t N>
-        nope swap(T (&)[N], T (&)[N]) = delete;
-
-#ifdef CPP_WORKAROUND_MSVC_895622
-        nope swap();
-#endif
-
-        template<typename T, typename U>
-        decltype(swap(std::declval<T>(), std::declval<U>())) try_adl_swap_(int);
-
-        template<typename T, typename U>
-        nope try_adl_swap_(long);
-
-        template<typename T, typename U = T>
-        CPP_INLINE_VAR constexpr bool is_adl_swappable_v =
-            !META_IS_SAME(decltype(adl_swap_detail::try_adl_swap_<T, U>(42)), nope);
-
-        struct swap_fn
-        {
-            // Dispatch to user-defined swap found via ADL:
-            template<typename T, typename U>
-            CPP_CXX14_CONSTEXPR
-            meta::if_c<is_adl_swappable_v<T, U>>
-            operator()(T &&t, U &&u) const
-            noexcept(noexcept(swap((T &&) t, (U &&) u)))
-            {
-                swap((T &&) t, (U &&) u);
-            }
-
-            // For intrinsically swappable (i.e., movable) types for which
-            // a swap overload cannot be found via ADL, swap by moving.
-            template<typename T>
-            CPP_CXX14_CONSTEXPR
-            meta::if_c<
-                !is_adl_swappable_v<T &> &&
-                detail::is_movable_v<T>>
-            operator()(T &a, T &b) const
-            noexcept(noexcept(b = concepts::exchange(a, (T &&) b)))
-            {
-                b = concepts::exchange(a, (T &&) b);
-            }
-
-            // For arrays of intrinsically swappable (i.e., movable) types
-            // for which a swap overload cannot be found via ADL, swap array
-            // elements by moving.
-            template<typename T, typename U, std::size_t N>
-            CPP_CXX14_CONSTEXPR
-            meta::if_c<
-                !is_adl_swappable_v<T (&)[N], U (&)[N]> &&
-                is_swappable_with<T &, U &>::value>
-            operator()(T (&t)[N], U (&u)[N]) const
-                noexcept(is_nothrow_swappable_with<T &, U &>::value)
-            {
-                for(std::size_t i = 0; i < N; ++i)
-                    (*this)(t[i], u[i]);
-            }
-
-            // For rvalue pairs and tuples of swappable types, swap the
-            // members. This permits code like:
-            //   ranges::swap(std::tie(a,b,c), std::tie(d,e,f));
-            template<typename F0, typename S0, typename F1, typename S1>
-            CPP_CXX14_CONSTEXPR
-            meta::if_c<is_swappable_with<F0, F1>::value && is_swappable_with<S0, S1>::value>
-            operator()(std::pair<F0, S0> &&left, std::pair<F1, S1> &&right) const
-                noexcept(
-                    is_nothrow_swappable_with<F0, F1>::value &&
-                    is_nothrow_swappable_with<S0, S1>::value)
-            {
-                swap_fn()(static_cast<std::pair<F0, S0> &&>(left).first,
-                            static_cast<std::pair<F1, S1> &&>(right).first);
-                swap_fn()(static_cast<std::pair<F0, S0> &&>(left).second,
-                            static_cast<std::pair<F1, S1> &&>(right).second);
-            }
-
-            template<typename ...Ts, typename ...Us>
-            CPP_CXX14_CONSTEXPR
-            meta::if_c<meta::and_c<is_swappable_with<Ts, Us>::value...>::value>
-            operator()(std::tuple<Ts...> &&left, std::tuple<Us...> &&right) const
-                noexcept(meta::and_c<is_nothrow_swappable_with<Ts, Us>::value...>::value)
-            {
-                swap_fn::impl(
-                    static_cast<std::tuple<Ts...> &&>(left),
-                    static_cast<std::tuple<Us...> &&>(right),
-                    meta::make_index_sequence<sizeof...(Ts)>{});
-            }
-
-        private:
-            template<typename... Ts>
-            static constexpr int ignore_unused(Ts &&...)
-            {
-                return 0;
-            }
-            template<typename T, typename U, std::size_t ...Is>
-            CPP_CXX14_CONSTEXPR
-            static void impl(T &&left, U &&right, meta::index_sequence<Is...>)
-            {
-                (void) swap_fn::ignore_unused(
-                    (swap_fn()(std::get<Is>(static_cast<T &&>(left)),
-                                std::get<Is>(static_cast<U &&>(right))), 42)...);
-            }
-        };
-
-        template<typename T, typename U, typename = void>
-        struct is_swappable_with_
-            : std::false_type
-        {};
-
-        template<typename T, typename U>
-        struct is_swappable_with_<T, U, meta::void_<
-            decltype(swap_fn()(std::declval<T>(), std::declval<U>())),
-            decltype(swap_fn()(std::declval<U>(), std::declval<T>()))>>
-            : std::true_type
-        {};
-
-        template<typename T, typename U>
-        struct is_nothrow_swappable_with_
-            : meta::bool_<noexcept(swap_fn()(std::declval<T>(), std::declval<U>())) &&
-                        noexcept(swap_fn()(std::declval<U>(), std::declval<T>()))>
-        {};
-
-        // Q: Should std::reference_wrapper be considered a proxy wrt swapping rvalues?
-        // A: No. Its operator= is currently defined to reseat the references, so
-        //    std::swap(ra, rb) already means something when ra and rb are (lvalue)
-        //    reference_wrappers. That reseats the reference wrappers but leaves the
-        //    referents unmodified. Treating rvalue reference_wrappers differently would
-        //    be confusing.
-
-        // Q: Then why is it OK to "re"-define swap for pairs and tuples of references?
-        // A: Because as defined above, swapping an rvalue tuple of references has the same
-        //    semantics as swapping an lvalue tuple of references. Rather than reseat the
-        //    references, assignment happens *through* the references.
-
-        // Q: But I have an iterator whose operator* returns an rvalue
-        //    std::reference_wrapper<T>. How do I make it model indirectly_swappable?
-        // A: With an overload of iter_swap.
-    }
-    /// \endcond
-
-    /// \ingroup group-utility
-    template<typename T, typename U>
-    struct is_swappable_with
-        : adl_swap_detail::is_swappable_with_<T, U>
-    {};
-
-    /// \ingroup group-utility
-    template<typename T, typename U>
-    struct is_nothrow_swappable_with
-        : meta::and_<
-            is_swappable_with<T, U>,
-            adl_swap_detail::is_nothrow_swappable_with_<T, U>>
-    {};
-
-    /// \ingroup group-utility
-    template<typename T>
-    struct is_swappable
-        : is_swappable_with<T &, T &>
-    {};
-
-    /// \ingroup group-utility
-    template<typename T>
-    struct is_nothrow_swappable
-        : is_nothrow_swappable_with<T &, T &>
-    {};
-
-    /// \ingroup group-utility
-    /// \relates adl_swap_detail::swap_fn
-    CPP_DEFINE_CPO(adl_swap_detail::swap_fn, swap)
-}
-
-#endif

external/repo/range-v3/include/concepts/type_traits.hpp

-/// \file
-// Concepts library
-//
-//  Copyright Eric Niebler 2013-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-
-#ifndef CPP_TYPE_TRAITS_HPP
-#define CPP_TYPE_TRAITS_HPP
-
-#include <tuple>
-#include <utility>
-#include <type_traits>
-#include <meta/meta.hpp>
-
-namespace concepts
-{
-    template<typename T>
-    using remove_cvref_t =
-        typename std::remove_cv<
-            typename std::remove_reference<T>::type>::type;
-
-    /// \cond
-    namespace detail
-    {
-        template<typename From, typename To>
-        using is_convertible = std::is_convertible<meta::_t<std::add_rvalue_reference<From>>, To>;
-
-        template<bool>
-        struct if_else_
-        {
-            template<typename, typename U>
-            using invoke = U;
-        };
-        template<>
-        struct if_else_<true>
-        {
-            template<typename T, typename>
-            using invoke = T;
-        };
-        template<bool B, typename T, typename U>
-        using if_else_t = meta::invoke<if_else_<B>, T, U>;
-
-        template<bool>
-        struct if_
-        {};
-        template<>
-        struct if_<true>
-        {
-            template<typename T>
-            using invoke = T;
-        };
-        template<bool B, typename T = void>
-        using if_t = meta::invoke<if_<B>, T>;
-
-        template<typename From, typename To>
-        struct _copy_cv_
-        {
-            using type = To;
-        };
-        template<typename From, typename To>
-        struct _copy_cv_<From const, To>
-        {
-            using type = To const;
-        };
-        template<typename From, typename To>
-        struct _copy_cv_<From volatile, To>
-        {
-            using type = To volatile;
-        };
-        template<typename From, typename To>
-        struct _copy_cv_<From const volatile, To>
-        {
-            using type = To const volatile;
-        };
-        template<typename From, typename To>
-        using _copy_cv = meta::_t<_copy_cv_<From, To>>;
-
-        ////////////////////////////////////////////////////////////////////////////////////////
-        template<typename T, typename U, typename = void>
-        struct _builtin_common;
-
-        template<typename T, typename U>
-        using _builtin_common_t = meta::_t<_builtin_common<T, U>>;
-
-        template<typename T, typename U>
-        using _cond_res = decltype(true ? std::declval<T>() : std::declval<U>());
-
-        template<typename T, typename U, typename R = _builtin_common_t<T &, U &>>
-        using _rref_res =
-            if_else_t<std::is_reference<R>::value, meta::_t<std::remove_reference<R>> &&, R>;
-
-        template<typename T, typename U>
-        using _lref_res = _cond_res<_copy_cv<T, U> &, _copy_cv<U, T> &>;
-
-        template<typename T>
-        struct as_cref_
-        {
-            using type = T const &;
-        };
-        template<typename T>
-        struct as_cref_<T &>
-        {
-            using type = T const &;
-        };
-        template<typename T>
-        struct as_cref_<T &&>
-        {
-            using type = T const &;
-        };
-        template<>
-        struct as_cref_<void>
-        {
-            using type = void;
-        };
-        template<>
-        struct as_cref_<void const>
-        {
-            using type = void const;
-        };
-
-        template<typename T>
-        using as_cref_t = typename as_cref_<T>::type;
-
-        template<typename T>
-        using decay_t = typename std::decay<T>::type;
-
-    #if !defined(__GNUC__) || defined(__clang__)
-        template<typename T, typename U, typename = void>
-        struct _builtin_common_2
-        {};
-        template<typename T, typename U>
-        struct _builtin_common_2<T, U, meta::void_<_cond_res<as_cref_t<T>, as_cref_t<U>>>>
-            : std::decay<_cond_res<as_cref_t<T>, as_cref_t<U>>>
-        {};
-        template<typename T, typename U, typename /* = void */>
-        struct _builtin_common
-            : _builtin_common_2<T, U>
-        {};
-        template<typename T, typename U>
-        struct _builtin_common<T &&, U &&, if_t<
-            is_convertible<T &&, _rref_res<T, U>>::value &&
-            is_convertible<U &&, _rref_res<T, U>>::value>>
-        {
-            using type = _rref_res<T, U>;
-        };
-        template<typename T, typename U>
-        struct _builtin_common<T &, U &>
-            : meta::defer<_lref_res, T, U>
-        {};
-        template<typename T, typename U>
-        struct _builtin_common<T &, U &&, if_t<
-            is_convertible<U &&, _builtin_common_t<T &, U const &>>::value>>
-            : _builtin_common<T &, U const &>
-        {};
-        template<typename T, typename U>
-        struct _builtin_common<T &&, U &>
-            : _builtin_common<U &, T &&>
-        {};
-    #else
-        template<typename T, typename U, typename = void>
-        struct _builtin_common_
-        {};
-        template<typename T, typename U>
-        struct _builtin_common_<T, U, meta::void_<_cond_res<as_cref_t<T>, as_cref_t<U>>>>
-            : std::decay<_cond_res<as_cref_t<T>, as_cref_t<U>>>
-        {};
-        template<typename T, typename U, typename /* = void */>
-        struct _builtin_common
-            : _builtin_common_<T, U>
-        {};
-        template<typename T, typename U, typename = void>
-        struct _builtin_common_rr
-            : _builtin_common_<T &&, U &&>
-        {};
-        template<typename T, typename U>
-        struct _builtin_common_rr<T, U, if_t<
-            is_convertible<T &&, _rref_res<T, U>>::value &&
-            is_convertible<U &&, _rref_res<T, U>>::value>>
-        {
-            using type = _rref_res<T, U>;
-        };
-        template<typename T, typename U>
-        struct _builtin_common<T &&, U &&>
-            : _builtin_common_rr<T, U>
-        {};
-        template<typename T, typename U>
-        struct _builtin_common<T &, U &>
-            : meta::defer<_lref_res, T, U>
-        {};
-        template<typename T, typename U, typename = void>
-        struct _builtin_common_lr
-            : _builtin_common_<T &, T &&>
-        {};
-        template<typename T, typename U>
-        struct _builtin_common_lr<T, U, if_t<
-            is_convertible<U &&, _builtin_common_t<T &, U const &>>::value>>
-            : _builtin_common<T &, U const &>
-        {};
-        template<typename T, typename U>
-        struct _builtin_common<T &, U &&>
-            : _builtin_common_lr<T, U>
-        {};
-        template<typename T, typename U>
-        struct _builtin_common<T &&, U &>
-            : _builtin_common<U &, T &&>
-        {};
-    #endif
-    }
-    /// \endcond
-
-    /// \addtogroup group-utility Utility
-    /// @{
-    ///
-
-    /// Users should specialize this to hook the \c common_with concept
-    /// until \c std gets a SFINAE-friendly \c std::common_type and there's
-    /// some sane way to deal with cv and ref qualifiers.
-    template<typename ...Ts>
-    struct common_type
-    {};
-
-    template<typename T>
-    struct common_type<T>
-        : std::decay<T>
-    {};
-
-    template<typename T, typename U>
-    struct common_type<T, U>
-        : detail::if_else_t<
-            (META_IS_SAME(detail::decay_t<T>, T) &&
-                META_IS_SAME(detail::decay_t<U>, U) ),
-            meta::defer<detail::_builtin_common_t, T, U>,
-            common_type<detail::decay_t<T>, detail::decay_t<U>>>
-    {};
-
-    template<typename... Ts>
-    using common_type_t = typename common_type<Ts...>::type;
-
-    template<typename T, typename U, typename... Vs>
-    struct common_type<T, U, Vs...>
-        : meta::lazy::fold<meta::list<U, Vs...>, T, meta::quote<common_type_t>>
-    {};
-
-    /// @}
-
-    /// \addtogroup group-utility Utility
-    /// @{
-    ///
-
-    /// Users can specialize this to hook the \c common_reference_with concept.
-    /// \sa `common_reference`
-    template<
-        typename T,
-        typename U,
-        template<typename> class TQual,
-        template<typename> class UQual>
-    struct basic_common_reference
-    {};
-
-    /// \cond
-    namespace detail
-    {
-        using _rref =
-            meta::quote_trait<std::add_rvalue_reference>;
-        using _lref =
-            meta::quote_trait<std::add_lvalue_reference>;
-
-        template<typename>
-        struct _xref
-        {
-            template<typename T>
-            using invoke = T;
-        };
-        template<typename T>
-        struct _xref<T &&>
-        {
-            template<typename U>
-            using invoke =
-                meta::_t<std::add_rvalue_reference<meta::invoke<_xref<T>, U>>>;
-        };
-        template<typename T>
-        struct _xref<T &>
-        {
-            template<typename U>
-            using invoke =
-                meta::_t<std::add_lvalue_reference<meta::invoke<_xref<T>, U>>>;
-        };
-        template<typename T>
-        struct _xref<T const>
-        {
-            template<typename U>
-            using invoke = U const;
-        };
-        template<typename T>
-        struct _xref<T volatile>
-        {
-            template<typename U>
-            using invoke = U volatile;
-        };
-        template<typename T>
-        struct _xref<T const volatile>
-        {
-            template<typename U>
-            using invoke = U const volatile;
-        };
-
-        template<typename T, typename U>
-        using _basic_common_reference =
-            basic_common_reference<
-                remove_cvref_t<T>,
-                remove_cvref_t<U>,
-                _xref<T>::template invoke,
-                _xref<U>::template invoke>;
-
-        template<typename T, typename U, typename = void>
-        struct _common_reference2
-            : if_else_t<
-                meta::is_trait<_basic_common_reference<T, U>>::value,
-                _basic_common_reference<T, U>,
-                common_type<T, U>>
-        {};
-
-        template<typename T, typename U>
-        struct _common_reference2<T, U, if_t<std::is_reference<_builtin_common_t<T, U>>::value>>
-            : _builtin_common<T, U>
-        {};
-    }
-    /// \endcond
-
-    /// Users can specialize this to hook the \c common_reference_with concept.
-    /// \sa `basic_common_reference`
-    template<typename ...Ts>
-    struct common_reference
-    {};
-
-    template<typename T>
-    struct common_reference<T>
-    {
-        using type = T;
-    };
-
-    template<typename T, typename U>
-    struct common_reference<T, U>
-        : detail::_common_reference2<T, U>
-    {};
-
-    template<typename... Ts>
-    using common_reference_t = typename common_reference<Ts...>::type;
-
-    template<typename T, typename U, typename... Vs>
-    struct common_reference<T, U, Vs...>
-        : meta::lazy::fold<meta::list<U, Vs...>, T, meta::quote<common_reference_t>>
-    {};
-    /// @}
-} // namespace concepts
-
-#endif

external/repo/range-v3/include/meta/meta_fwd.hpp

-/// \file meta_fwd.hpp Forward declarations
-//
-// Meta library
-//
-//  Copyright Eric Niebler 2014-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/meta
-//
-
-#ifndef META_FWD_HPP
-#define META_FWD_HPP
-
-#include <type_traits>
-#include <utility>
-
-#ifdef __clang__
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wmissing-variable-declarations"
-#endif
-
-#define META_CXX_STD_14 201402L
-#define META_CXX_STD_17 201703L
-
-#if defined(_MSVC_LANG) && _MSVC_LANG > __cplusplus // Older clangs define _MSVC_LANG < __cplusplus
-#define META_CXX_VER _MSVC_LANG
-#else
-#define META_CXX_VER __cplusplus
-#endif
-
-#if defined(__apple_build_version__) || defined(__clang__)
-#if defined(__apple_build_version__) || (defined(__clang__) && __clang_major__ < 6)
-#define META_WORKAROUND_LLVM_28385 // https://llvm.org/bugs/show_bug.cgi?id=28385
-#endif
-
-#elif defined(_MSC_VER)
-#define META_HAS_MAKE_INTEGER_SEQ 1
-#if _MSC_VER < 1920
-#define META_WORKAROUND_MSVC_702792 // Bogus C4018 comparing constant expressions with dependent type
-#define META_WORKAROUND_MSVC_703656 // ICE with pack expansion inside decltype in alias template
-#endif
-
-#if _MSC_VER < 1921
-#define META_WORKAROUND_MSVC_756112 // fold expression + alias templates in template argument
-#endif
-
-#elif defined(__GNUC__)
-#define META_WORKAROUND_GCC_86356 // https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86356
-#if __GNUC__ < 8
-#define META_WORKAROUND_GCC_UNKNOWN1 // Older GCCs don't like fold + debug + -march=native
-#endif
-#if __GNUC__ == 5 && __GNUC_MINOR__ == 1
-#define META_WORKAROUND_GCC_66405 // https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66405
-#endif
-#if __GNUC__ < 5
-#define META_WORKAROUND_CWG_1558 // https://wg21.link/cwg1558
-#endif
-#endif
-
-#ifndef META_CXX_VARIABLE_TEMPLATES
-#ifdef __cpp_variable_templates
-#define META_CXX_VARIABLE_TEMPLATES __cpp_variable_templates
-#else
-#define META_CXX_VARIABLE_TEMPLATES (META_CXX_VER >= META_CXX_STD_14)
-#endif
-#endif
-
-#ifndef META_CXX_INLINE_VARIABLES
-#ifdef __cpp_inline_variables
-#define META_CXX_INLINE_VARIABLES __cpp_inline_variables
-#else
-#define META_CXX_INLINE_VARIABLES (META_CXX_VER >= META_CXX_STD_17)
-#endif
-#endif
-
-#ifndef META_INLINE_VAR
-#if META_CXX_INLINE_VARIABLES
-#define META_INLINE_VAR inline
-#else
-#define META_INLINE_VAR
-#endif
-#endif
-
-#ifndef META_CXX_INTEGER_SEQUENCE
-#ifdef __cpp_lib_integer_sequence
-#define META_CXX_INTEGER_SEQUENCE __cpp_lib_integer_sequence
-#else
-#define META_CXX_INTEGER_SEQUENCE (META_CXX_VER >= META_CXX_STD_14)
-#endif
-#endif
-
-#ifndef META_HAS_MAKE_INTEGER_SEQ
-#ifdef __has_builtin
-#if __has_builtin(__make_integer_seq)
-#define META_HAS_MAKE_INTEGER_SEQ 1
-#endif
-#endif
-#endif
-#ifndef META_HAS_MAKE_INTEGER_SEQ
-#define META_HAS_MAKE_INTEGER_SEQ 0
-#endif
-
-#ifndef META_HAS_TYPE_PACK_ELEMENT
-#ifdef __has_builtin
-#if __has_builtin(__type_pack_element)
-#define META_HAS_TYPE_PACK_ELEMENT 1
-#endif
-#endif
-#endif
-#ifndef META_HAS_TYPE_PACK_ELEMENT
-#define META_HAS_TYPE_PACK_ELEMENT 0
-#endif
-
-#if !defined(META_DEPRECATED) && !defined(META_DISABLE_DEPRECATED_WARNINGS)
-#if defined(__cpp_attribute_deprecated) || META_CXX_VER >= META_CXX_STD_14
-#define META_DEPRECATED(...) [[deprecated(__VA_ARGS__)]]
-#elif defined(__clang__) || defined(__GNUC__)
-#define META_DEPRECATED(...) __attribute__((deprecated(__VA_ARGS__)))
-#endif
-#endif
-#ifndef META_DEPRECATED
-#define META_DEPRECATED(...)
-#endif
-
-#ifndef META_CXX_FOLD_EXPRESSIONS
-#ifdef __cpp_fold_expressions
-#define META_CXX_FOLD_EXPRESSIONS __cpp_fold_expressions
-#else
-#define META_CXX_FOLD_EXPRESSIONS (META_CXX_VER >= META_CXX_STD_17)
-#endif
-#endif
-
-#if META_CXX_FOLD_EXPRESSIONS
-#if !META_CXX_VARIABLE_TEMPLATES
-#error Fold expressions, but no variable templates?
-#endif
-#endif
-
-#if defined(__cpp_concepts) && __cpp_concepts > 0
-#if !META_CXX_VARIABLE_TEMPLATES
-#error Concepts, but no variable templates?
-#endif
-#if __cpp_concepts <= 201507L
-#define META_CONCEPT concept bool
-// TS concepts subsumption barrier for atomic expressions
-#define META_CONCEPT_BARRIER(...) ::meta::detail::barrier<__VA_ARGS__>
-#else
-#define META_CONCEPT concept
-#define META_CONCEPT_BARRIER(...) __VA_ARGS__
-#endif
-#define META_TYPE_CONSTRAINT(...) __VA_ARGS__
-#else
-#define META_TYPE_CONSTRAINT(...) typename
-#endif
-
-#if (defined(__cpp_lib_type_trait_variable_templates) && \
-    __cpp_lib_type_trait_variable_templates > 0)
-#define META_CXX_TRAIT_VARIABLE_TEMPLATES 1
-#else
-#define META_CXX_TRAIT_VARIABLE_TEMPLATES 0
-#endif
-
-#if defined(__clang__)
-#define META_IS_SAME(...) __is_same(__VA_ARGS__)
-#elif defined(__GNUC__) && __GNUC__ >= 6
-#define META_IS_SAME(...) __is_same_as(__VA_ARGS__)
-#elif META_CXX_TRAIT_VARIABLE_TEMPLATES
-#define META_IS_SAME(...) std::is_same_v<__VA_ARGS__>
-#else
-#define META_IS_SAME(...) std::is_same<__VA_ARGS__>::value
-#endif
-
-#if defined(__GNUC__) || defined(_MSC_VER)
-#define META_IS_BASE_OF(...) __is_base_of(__VA_ARGS__)
-#elif META_CXX_TRAIT_VARIABLE_TEMPLATES
-#define META_IS_BASE_OF(...) std::is_base_of_v<__VA_ARGS__>
-#else
-#define META_IS_BASE_OF(...) std::is_base_of<__VA_ARGS__>::value
-#endif
-
-#if defined(__clang__) || defined(_MSC_VER) || \
-    (defined(__GNUC__) && __GNUC__ >= 8)
-#define META_IS_CONSTRUCTIBLE(...) __is_constructible(__VA_ARGS__)
-#elif META_CXX_TRAIT_VARIABLE_TEMPLATES
-#define META_IS_CONSTRUCTIBLE(...) std::is_constructible_v<__VA_ARGS__>
-#else
-#define META_IS_CONSTRUCTIBLE(...) std::is_constructible<__VA_ARGS__>::value
-#endif
-
-/// \cond
-// Non-portable forward declarations of standard containers
-#ifdef _LIBCPP_VERSION
-#define META_BEGIN_NAMESPACE_STD _LIBCPP_BEGIN_NAMESPACE_STD
-#define META_END_NAMESPACE_STD _LIBCPP_END_NAMESPACE_STD
-#elif defined(_MSVC_STL_VERSION)
-#define META_BEGIN_NAMESPACE_STD _STD_BEGIN
-#define META_END_NAMESPACE_STD _STD_END
-#else
-#define META_BEGIN_NAMESPACE_STD namespace std {
-#define META_END_NAMESPACE_STD }
-#endif
-
-#if defined(__GLIBCXX__)
-#define META_BEGIN_NAMESPACE_VERSION _GLIBCXX_BEGIN_NAMESPACE_VERSION
-#define META_END_NAMESPACE_VERSION _GLIBCXX_END_NAMESPACE_VERSION
-#define META_BEGIN_NAMESPACE_CONTAINER _GLIBCXX_BEGIN_NAMESPACE_CONTAINER
-#define META_END_NAMESPACE_CONTAINER _GLIBCXX_END_NAMESPACE_CONTAINER
-#else
-#define META_BEGIN_NAMESPACE_VERSION
-#define META_END_NAMESPACE_VERSION
-#define META_BEGIN_NAMESPACE_CONTAINER
-#define META_END_NAMESPACE_CONTAINER
-#endif
-
-#if defined(_LIBCPP_VERSION) && _LIBCPP_VERSION >= 4000
-#define META_TEMPLATE_VIS _LIBCPP_TEMPLATE_VIS
-#elif defined(_LIBCPP_VERSION)
-#define META_TEMPLATE_VIS _LIBCPP_TYPE_VIS_ONLY
-#else
-#define META_TEMPLATE_VIS
-#endif
-/// \endcond
-
-namespace meta
-{
-#if META_CXX_INTEGER_SEQUENCE
-    using std::integer_sequence;
-#else
-    template <typename T, T...>
-    struct integer_sequence;
-#endif
-
-    template <typename... Ts>
-    struct list;
-
-    template <typename T>
-    struct id;
-
-    template <template <typename...> class>
-    struct quote;
-
-    template <typename T, template <T...> class F>
-    struct quote_i;
-
-    template <template <typename...> class C, typename... Ts>
-    struct defer;
-
-    template <typename T, template <T...> class C, T... Is>
-    struct defer_i;
-
-#if META_CXX_VARIABLE_TEMPLATES || defined(META_DOXYGEN_INVOKED)
-    /// is_v
-    /// Test whether a type \p T is an instantiation of class
-    /// template \p C.
-    /// \ingroup trait
-    template <typename, template <typename...> class>
-    META_INLINE_VAR constexpr bool is_v = false;
-    template <typename... Ts, template <typename...> class C>
-    META_INLINE_VAR constexpr bool is_v<C<Ts...>, C> = true;
-#endif
-
-#ifdef META_CONCEPT
-    namespace detail
-    {
-        template <bool B>
-        META_INLINE_VAR constexpr bool barrier = B;
-
-        template <class T, T> struct require_constant; // not defined
-    }
-
-    template <typename...>
-    META_CONCEPT is_true = META_CONCEPT_BARRIER(true);
-
-    template <typename T, typename U>
-    META_CONCEPT same_as =
-        META_CONCEPT_BARRIER(META_IS_SAME(T, U));
-
-    template <template <typename...> class C, typename... Ts>
-    META_CONCEPT valid = requires
-    {
-        typename C<Ts...>;
-    };
-
-    template <typename T, template <T...> class C, T... Is>
-    META_CONCEPT valid_i = requires
-    {
-        typename C<Is...>;
-    };
-
-    template <typename T>
-    META_CONCEPT trait = requires
-    {
-        typename T::type;
-    };
-
-    template <typename T>
-    META_CONCEPT invocable = requires
-    {
-        typename quote<T::template invoke>;
-    };
-
-    template <typename T>
-    META_CONCEPT list_like = is_v<T, list>;
-
-    // clang-format off
-    template <typename T>
-    META_CONCEPT integral = requires
-    {
-        typename T::type;
-        typename T::value_type;
-        typename T::type::value_type;
-    }
-    && same_as<typename T::value_type, typename T::type::value_type>
-#if META_CXX_TRAIT_VARIABLE_TEMPLATES
-    && std::is_integral_v<typename T::value_type>
-#else
-    && std::is_integral<typename T::value_type>::value
-#endif
-
-    && requires
-    {
-        // { T::value } -> same_as<const typename T::value_type&>;
-        T::value;
-        requires same_as<decltype(T::value), const typename T::value_type>;
-        typename detail::require_constant<decltype(T::value), T::value>;
-
-        // { T::type::value } -> same_as<const typename T::value_type&>;
-        T::type::value;
-        requires same_as<decltype(T::type::value), const typename T::value_type>;
-        typename detail::require_constant<decltype(T::type::value), T::type::value>;
-        requires T::value == T::type::value;
-
-        // { T{}() } -> same_as<typename T::value_type>;
-        T{}();
-        requires same_as<decltype(T{}()), typename T::value_type>;
-        typename detail::require_constant<decltype(T{}()), T{}()>;
-        requires T{}() == T::value;
-
-        { T{} } -> typename T::value_type;
-    };
-    // clang-format on
-#endif // META_CONCEPT
-
-    namespace extension
-    {
-        template <META_TYPE_CONSTRAINT(invocable) F, typename L>
-        struct apply;
-    }
-} // namespace meta
-
-#ifdef __clang__
-#pragma GCC diagnostic pop
-#endif
-
-#endif

external/repo/range-v3/include/module.modulemap

-/// \file
-// Range v3 library
-//
-//  Copyright Gonzalo Brito Gadeschi 2017.
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-
-module concepts {
-    umbrella "concepts"
-    export *
-}
-module meta {
-    umbrella "meta"
-    export *
-}
-module range_v3 {
-    umbrella "range"
-    export *
-    exclude header "range/v3/algorithm/tagspec.hpp"
-    exclude header "range/v3/at.hpp"
-    exclude header "range/v3/back.hpp"
-    exclude header "range/v3/begin_end.hpp"
-    exclude header "range/v3/data.hpp"
-    exclude header "range/v3/distance.hpp"
-    exclude header "range/v3/empty.hpp"
-    exclude header "range/v3/front.hpp"
-    exclude header "range/v3/getlines.hpp"
-    exclude header "range/v3/index.hpp"
-    exclude header "range/v3/istream_range.hpp"
-    exclude header "range/v3/iterator_range.hpp"
-    exclude header "range/v3/range_access.hpp"
-    exclude header "range/v3/range_concepts.hpp"
-    exclude header "range/v3/range_traits.hpp"
-    exclude header "range/v3/size.hpp"
-    exclude header "range/v3/span.hpp"
-    exclude header "range/v3/to_container.hpp"
-    exclude header "range/v3/utility/associated_types.hpp"
-    exclude header "range/v3/utility/basic_iterator.hpp"
-    exclude header "range/v3/utility/common_iterator.hpp"
-    exclude header "range/v3/utility/concepts.hpp"
-    exclude header "range/v3/utility/counted_iterator.hpp"
-    exclude header "range/v3/utility/dangling.hpp"
-    exclude header "range/v3/utility/functional.hpp"
-    exclude header "range/v3/utility/infinity.hpp"
-    exclude header "range/v3/utility/invoke.hpp"
-    exclude header "range/v3/utility/iterator_concepts.hpp"
-    exclude header "range/v3/utility/iterator_traits.hpp"
-    exclude header "range/v3/utility/iterator.hpp"
-    exclude header "range/v3/utility/nullptr_v.hpp"
-    exclude header "range/v3/utility/unreachable.hpp"
-    exclude header "range/v3/view_adaptor.hpp"
-    exclude header "range/v3/view_facade.hpp"
-    exclude header "range/v3/view_interface.hpp"
-    exclude header "range/v3/view/bounded.hpp"
-}

external/repo/range-v3/include/range/v3/action.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2014-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-
-#ifndef RANGES_V3_ACTION_HPP
-#define RANGES_V3_ACTION_HPP
-
-#include <range/v3/action/action.hpp>
-#include <range/v3/action/adjacent_remove_if.hpp>
-#include <range/v3/action/concepts.hpp>
-#include <range/v3/action/drop.hpp>
-#include <range/v3/action/drop_while.hpp>
-#include <range/v3/action/erase.hpp>
-#include <range/v3/action/insert.hpp>
-#include <range/v3/action/join.hpp>
-#include <range/v3/action/push_back.hpp>
-#include <range/v3/action/push_front.hpp>
-#include <range/v3/action/remove_if.hpp>
-#include <range/v3/action/reverse.hpp>
-#include <range/v3/action/shuffle.hpp>
-#include <range/v3/action/slice.hpp>
-#include <range/v3/action/sort.hpp>
-#include <range/v3/action/split.hpp>
-#include <range/v3/action/split_when.hpp>
-#include <range/v3/action/stable_sort.hpp>
-#include <range/v3/action/stride.hpp>
-#include <range/v3/action/take.hpp>
-#include <range/v3/action/take_while.hpp>
-#include <range/v3/action/transform.hpp>
-#include <range/v3/action/unique.hpp>
-#include <range/v3/action/unstable_remove_if.hpp>
-
-#endif

external/repo/range-v3/include/range/v3/action/action.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2013-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-
-#ifndef RANGES_V3_CONTAINER_ACTION_HPP
-#define RANGES_V3_CONTAINER_ACTION_HPP
-
-#include <type_traits>
-
-#include <meta/meta.hpp>
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/action/concepts.hpp>
-#include <range/v3/functional/arithmetic.hpp>
-#include <range/v3/functional/concepts.hpp>
-#include <range/v3/functional/invoke.hpp>
-#include <range/v3/range/concepts.hpp>
-#include <range/v3/utility/static_const.hpp>
-#include <range/v3/view/ref.hpp>
-
-namespace ranges
-{
-    /// \addtogroup group-actions
-    /// @{
-    namespace actions
-    {
-        struct action_access
-        {
-            template<typename Action>
-            struct impl
-            {
-                // clang-format off
-                template<typename... Ts, typename A = Action>
-                static constexpr auto CPP_auto_fun(bind)(Ts &&... ts)
-                (
-                    return A::bind(static_cast<Ts &&>(ts)...)
-                )
-                // clang-format on
-            };
-        };
-
-        struct make_action_fn
-        {
-            template<typename Fun>
-            constexpr action<Fun> operator()(Fun fun) const
-            {
-                return action<Fun>{detail::move(fun)};
-            }
-        };
-
-        /// \ingroup group-actions
-        /// \relates make_action_fn
-        RANGES_INLINE_VARIABLE(make_action_fn, make_action)
-
-        template<typename Action>
-        struct action : pipeable_base
-        {
-        private:
-            Action action_;
-            friend pipeable_access;
-
-            // Piping requires things are passed by value.
-            template<typename Rng, typename Act>
-            static auto pipe(Rng && rng, Act && act)
-                -> CPP_ret(invoke_result_t<Action &, Rng>)( //
-                    requires range<Rng> && invocable<Action &, Rng> &&
-                    (!std::is_reference<Rng>::value))
-            {
-                return invoke(act.action_, detail::move(rng));
-            }
-
-        public:
-            action() = default;
-
-            constexpr explicit action(Action a) noexcept(
-                std::is_nothrow_move_constructible<Action>::value)
-              : action_(detail::move(a))
-            {}
-
-            // Calling directly requires things are passed by reference.
-            template<typename Rng, typename... Rest>
-            auto operator()(Rng & rng, Rest &&... rest) const
-                -> CPP_ret(invoke_result_t<Action const &, Rng &, Rest...>)( //
-                    requires range<Rng> && invocable<Action const &, Rng &, Rest...>)
-            {
-                return invoke(action_, rng, static_cast<Rest &&>(rest)...);
-            }
-
-            // Currying overload.
-            // clang-format off
-            template<typename T, typename... Rest, typename A = Action>
-            auto CPP_auto_fun(operator())(T &&t, Rest &&... rest)(const)
-            (
-                return make_action(
-                    action_access::impl<A>::bind(action_,
-                                                 static_cast<T &&>(t),
-                                                 static_cast<Rest &&>(rest)...))
-            )
-            // clang-format on
-        };
-
-        template<typename Rng, typename Action>
-        auto operator|=(Rng & rng, Action && action) -> CPP_ret(Rng &)( //
-            requires is_pipeable<Action>::value && range<Rng &> &&
-                invocable<bitwise_or, ref_view<Rng>, Action &> && same_as<
-                    ref_view<Rng>, invoke_result_t<bitwise_or, ref_view<Rng>, Action &>>)
-        {
-            views::ref(rng) | action;
-            return rng;
-        }
-    } // namespace actions
-    /// @}
-} // namespace ranges
-
-#endif

external/repo/range-v3/include/range/v3/action/adjacent_remove_if.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler
-//  Copyright Christopher Di Bella
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-#ifndef RANGES_V3_ACTION_ADJACENT_REMOVE_IF_HPP
-#define RANGES_V3_ACTION_ADJACENT_REMOVE_IF_HPP
-
-#include <utility>
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/action/action.hpp>
-#include <range/v3/action/erase.hpp>
-#include <range/v3/algorithm/adjacent_remove_if.hpp>
-#include <range/v3/functional/bind_back.hpp>
-#include <range/v3/functional/identity.hpp>
-#include <range/v3/range/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    /// \addtogroup group-actions
-    /// @{
-    namespace actions
-    {
-        struct adjacent_remove_if_fn
-        {
-        private:
-            friend action_access;
-            template<typename Pred, typename Proj = identity>
-            static auto CPP_fun(bind)(adjacent_remove_if_fn adjacent_remove_if, Pred pred,
-                                      Proj proj = {})( //
-                requires(!range<Pred>))
-            {
-                return bind_back(adjacent_remove_if, std::move(pred), std::move(proj));
-            }
-
-        public:
-            template<typename Rng, typename Pred, typename Proj = identity>
-            auto operator()(Rng && rng, Pred pred, Proj proj = {}) const
-                -> CPP_ret(Rng)( //
-                    requires forward_range<Rng> &&
-                        erasable_range<Rng, iterator_t<Rng>, sentinel_t<Rng>> &&
-                            indirect_relation<Pred, projected<iterator_t<Rng>, Proj>> &&
-                                permutable<iterator_t<Rng>>)
-            {
-                auto i = adjacent_remove_if(rng, std::move(pred), std::move(proj));
-                erase(rng, std::move(i), end(rng));
-                return static_cast<Rng &&>(rng);
-            }
-        };
-
-        /// \ingroup group-actions
-        /// \sa action
-        /// \sa with_braced_init_args
-        RANGES_INLINE_VARIABLE(action<adjacent_remove_if_fn>, adjacent_remove_if)
-    } // namespace actions
-    /// @}
-} // namespace ranges
-
-#endif // RANGES_V3_ACTION_ADJACENT_REMOVE_IF_HPP

external/repo/range-v3/include/range/v3/action/concepts.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2013-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-
-#ifndef RANGES_V3_ACTION_CONCEPTS_HPP
-#define RANGES_V3_ACTION_CONCEPTS_HPP
-
-#include <utility>
-
-#include <meta/meta.hpp>
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/range/concepts.hpp>
-#include <range/v3/range/traits.hpp>
-
-namespace ranges
-{
-    /// \cond
-    namespace detail
-    {
-        template<typename T>
-        struct movable_input_iterator
-        {
-            using iterator_category = std::input_iterator_tag;
-            using value_type = T;
-            using difference_type = std::ptrdiff_t;
-            using pointer = T *;
-            using reference = T &&;
-
-            movable_input_iterator() = default;
-            movable_input_iterator & operator++();
-            movable_input_iterator operator++(int);
-            bool operator==(movable_input_iterator const &) const;
-            bool operator!=(movable_input_iterator const &) const;
-            T && operator*() const;
-        };
-    } // namespace detail
-      /// \endcond
-
-    /// \addtogroup group-range
-    /// @{
-
-    // std::array is a semi_container, native arrays are not.
-    // clang-format off
-    CPP_def
-    (
-        template(typename T)
-        concept semi_container,
-            forward_range<T> && default_constructible<uncvref_t<T>> &&
-            movable<uncvref_t<T>> &&
-            !view_<T>
-    );
-
-    // std::vector is a container, std::array is not
-    CPP_def
-    (
-        template(typename T)
-        concept container,
-            semi_container<T> &&
-            constructible_from<
-                uncvref_t<T>,
-                detail::movable_input_iterator<range_value_t<T>>,
-                detail::movable_input_iterator<range_value_t<T>>>
-    );
-
-    CPP_def
-    (
-        template(typename C)
-        concept reservable,
-            requires (C &c, C const &cc, range_size_t<C> s)
-            (
-                c.reserve(s),
-                cc.capacity(),
-                cc.max_size(),
-                concepts::requires_<same_as<decltype(cc.capacity()), range_size_t<C>>>,
-                concepts::requires_<same_as<decltype(cc.max_size()), range_size_t<C>>>
-            ) &&
-            container<C> && sized_range<C>
-    );
-
-    CPP_def
-    (
-        template(typename C, typename I)
-        concept reservable_with_assign,
-            requires (C &c, I i)
-            (
-                c.assign(i, i)
-            ) &&
-            reservable<C> && input_iterator<I>
-    );
-
-    CPP_def
-    (
-        template(typename C)
-        concept random_access_reservable,
-            reservable<C> && random_access_range<C>
-    );
-    // clang-format on
-
-    /// \cond
-    namespace detail
-    {
-        template<typename T>
-        auto is_lvalue_container_like(T &) noexcept -> CPP_ret(std::true_type)( //
-            requires container<T>)
-        {
-            return {};
-        }
-
-        template<typename T>
-        auto is_lvalue_container_like(reference_wrapper<T>) noexcept
-            -> CPP_ret(meta::not_<std::is_rvalue_reference<T>>)( //
-                requires container<T>)
-        {
-            return {};
-        }
-
-        template<typename T>
-        auto is_lvalue_container_like(std::reference_wrapper<T>) noexcept
-            -> CPP_ret(std::true_type)( //
-                requires container<T>)
-        {
-            return {};
-        }
-
-        template<typename T>
-        auto is_lvalue_container_like(ref_view<T>) noexcept -> CPP_ret(std::true_type)( //
-            requires container<T>)
-        {
-            return {};
-        }
-
-        template<typename T>
-        using is_lvalue_container_like_t =
-            decltype(detail::is_lvalue_container_like(std::declval<T>()));
-
-    } // namespace detail
-    /// \endcond
-
-    // clang-format off
-    CPP_def
-    (
-        template(typename T)
-        concept lvalue_container_like,
-            implicitly_convertible_to<detail::is_lvalue_container_like_t<T>,
-                                      std::true_type> &&
-            forward_range<T>
-    );
-    // clang-format on
-    /// @}
-} // namespace ranges
-
-#endif

external/repo/range-v3/include/range/v3/action/drop.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2013-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-
-#ifndef RANGES_V3_ACTION_DROP_HPP
-#define RANGES_V3_ACTION_DROP_HPP
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/action/action.hpp>
-#include <range/v3/action/erase.hpp>
-#include <range/v3/functional/bind_back.hpp>
-#include <range/v3/iterator/concepts.hpp>
-#include <range/v3/iterator/operations.hpp>
-#include <range/v3/iterator/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    /// \addtogroup group-actions
-    /// @{
-    namespace actions
-    {
-        struct drop_fn
-        {
-        private:
-            friend action_access;
-            template<typename Int>
-            static auto CPP_fun(bind)(drop_fn drop, Int n)( //
-                requires integral<Int>)
-            {
-                return bind_back(drop, n);
-            }
-
-        public:
-            template<typename Rng>
-            auto operator()(Rng && rng, range_difference_t<Rng> n) const
-                -> CPP_ret(Rng)( //
-                    requires forward_range<Rng> &&
-                        erasable_range<Rng &, iterator_t<Rng>, iterator_t<Rng>>)
-            {
-                RANGES_EXPECT(n >= 0);
-                ranges::actions::erase(
-                    rng, begin(rng), ranges::next(begin(rng), n, end(rng)));
-                return static_cast<Rng &&>(rng);
-            }
-        };
-
-        /// \ingroup group-actions
-        /// \relates drop_fn
-        /// \sa action
-        RANGES_INLINE_VARIABLE(action<drop_fn>, drop)
-    } // namespace actions
-    /// @}
-} // namespace ranges
-
-#endif

external/repo/range-v3/include/range/v3/action/drop_while.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2013-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-
-#ifndef RANGES_V3_ACTION_DROP_WHILE_HPP
-#define RANGES_V3_ACTION_DROP_WHILE_HPP
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/action/action.hpp>
-#include <range/v3/action/erase.hpp>
-#include <range/v3/algorithm/find_if_not.hpp>
-#include <range/v3/functional/bind_back.hpp>
-#include <range/v3/iterator/concepts.hpp>
-#include <range/v3/iterator/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    /// \addtogroup group-actions
-    /// @{
-    namespace actions
-    {
-        struct drop_while_fn
-        {
-        private:
-            friend action_access;
-            template<typename Fun>
-            static auto CPP_fun(bind)(drop_while_fn drop_while, Fun fun)( //
-                requires(!range<Fun>))
-            {
-                return bind_back(drop_while, std::move(fun));
-            }
-
-        public:
-            template<typename Rng, typename Fun>
-            auto operator()(Rng && rng, Fun fun) const -> CPP_ret(Rng)( //
-                requires forward_range<Rng> &&
-                    indirect_unary_predicate<Fun, iterator_t<Rng>> &&
-                        erasable_range<Rng &, iterator_t<Rng>, iterator_t<Rng>>)
-            {
-                ranges::actions::erase(
-                    rng, begin(rng), find_if_not(begin(rng), end(rng), std::move(fun)));
-                return static_cast<Rng &&>(rng);
-            }
-        };
-
-        /// \ingroup group-actions
-        /// \relates drop_while_fn
-        /// \sa action
-        RANGES_INLINE_VARIABLE(action<drop_while_fn>, drop_while)
-    } // namespace actions
-    /// @}
-} // namespace ranges
-
-#endif

external/repo/range-v3/include/range/v3/action/erase.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2013-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-
-#ifndef RANGES_V3_ACTION_ERASE_HPP
-#define RANGES_V3_ACTION_ERASE_HPP
-
-#include <utility>
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/action/insert.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    /// \cond
-    namespace adl_erase_detail
-    {
-        template<typename Cont, typename I, typename S>
-        auto erase(Cont && cont, I first, S last)                            //
-            -> CPP_ret(decltype(unwrap_reference(cont).erase(first, last)))( //
-                requires lvalue_container_like<Cont> && forward_iterator<I> &&
-                    sentinel_for<S, I>)
-        {
-            return unwrap_reference(cont).erase(first, last);
-        }
-
-        struct erase_fn
-        {
-            template<typename Rng, typename I, typename S>
-            auto operator()(Rng && rng, I first, S last) const
-                -> CPP_ret(decltype(erase((Rng &&) rng, first, last)))( //
-                    requires range<Rng> && forward_iterator<I> && sentinel_for<S, I>)
-            {
-                return erase(static_cast<Rng &&>(rng), first, last);
-            }
-        };
-    } // namespace adl_erase_detail
-    /// \endcond
-
-    /// \ingroup group-actions
-    RANGES_INLINE_VARIABLE(adl_erase_detail::erase_fn, erase)
-
-    namespace actions
-    {
-        using ranges::erase;
-    }
-
-    /// \addtogroup group-range
-    /// @{
-    // clang-format off
-    CPP_def
-    (
-        template(typename Rng, typename I, typename S)
-        concept erasable_range,
-            requires (Rng &&rng, I first, S last)
-            (
-                ranges::erase(static_cast<Rng &&>(rng), first, last)
-            ) &&
-            range<Rng>
-    );
-    // clang-format on
-    /// @}
-} // namespace ranges
-
-#endif

external/repo/range-v3/include/range/v3/action/insert.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2013-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-
-#ifndef RANGES_V3_ACTION_INSERT_HPP
-#define RANGES_V3_ACTION_INSERT_HPP
-
-#include <initializer_list>
-#include <utility>
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/action/concepts.hpp>
-#include <range/v3/algorithm/max.hpp>
-#include <range/v3/iterator/common_iterator.hpp>
-#include <range/v3/range/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    /// \cond
-    namespace adl_insert_detail
-    {
-        template<typename Cont, typename... Args>
-        using insert_result_t = decltype(
-            unwrap_reference(std::declval<Cont>()).insert(std::declval<Args>()...));
-
-        template<typename Cont, typename T>
-        auto insert(Cont && cont, T && t) -> CPP_ret(insert_result_t<Cont &, T>)( //
-            requires lvalue_container_like<Cont> &&
-            (!range<T> && constructible_from<range_value_t<Cont>, T>))
-        {
-            return unwrap_reference(cont).insert(static_cast<T &&>(t));
-        }
-
-        template<typename Cont, typename I, typename S>
-        auto insert(Cont && cont, I i, S j)
-            -> CPP_ret(insert_result_t<Cont &, detail::cpp17_iterator_t<I, S>,
-                                       detail::cpp17_iterator_t<I, S>>)( //
-                requires lvalue_container_like<Cont> && sentinel_for<S, I> && (!range<S>))
-        {
-            return unwrap_reference(cont).insert(detail::cpp17_iterator_t<I, S>{i},
-                                                 detail::cpp17_iterator_t<I, S>{j});
-        }
-
-        template<typename Cont, typename Rng>
-        auto insert(Cont && cont, Rng && rng)
-            -> CPP_ret(insert_result_t<Cont &, detail::range_cpp17_iterator_t<Rng>,
-                                       detail::range_cpp17_iterator_t<Rng>>)( //
-                requires lvalue_container_like<Cont> && range<Rng>)
-        {
-            return unwrap_reference(cont).insert(
-                detail::range_cpp17_iterator_t<Rng>{ranges::begin(rng)},
-                detail::range_cpp17_iterator_t<Rng>{ranges::end(rng)});
-        }
-
-        template<typename Cont, typename I, typename T>
-        auto insert(Cont && cont, I p, T && t)
-            -> CPP_ret(insert_result_t<Cont &, I, T>)( //
-                requires lvalue_container_like<Cont> && input_iterator<I> &&
-                (!range<T> && constructible_from<range_value_t<Cont>, T>))
-        {
-            return unwrap_reference(cont).insert(p, static_cast<T &&>(t));
-        }
-
-        template<typename Cont, typename I, typename N, typename T>
-        auto insert(Cont && cont, I p, N n, T && t)
-            -> CPP_ret(insert_result_t<Cont &, I, N, T>)( //
-                requires lvalue_container_like<Cont> && input_iterator<I> &&
-                    integral<N> && constructible_from<range_value_t<Cont>, T>)
-        {
-            return unwrap_reference(cont).insert(p, n, static_cast<T &&>(t));
-        }
-
-        /// \cond
-        namespace detail
-        {
-            using ranges::detail::cpp17_iterator_t;
-            using ranges::detail::range_cpp17_iterator_t;
-
-            template<typename Cont, typename P>
-            auto insert_reserve_helper(Cont & cont, P const p,
-                                       range_size_t<Cont> const delta)
-                -> CPP_ret(iterator_t<Cont>)( //
-                    requires container<Cont> && input_iterator<P> &&
-                        random_access_reservable<Cont>)
-            {
-                auto const old_size = ranges::size(cont);
-                auto const max_size = cont.max_size();
-                RANGES_EXPECT(delta <= max_size - old_size);
-                auto const new_size = old_size + delta;
-                auto const old_capacity = cont.capacity();
-                auto const index = p - ranges::begin(cont);
-                if(old_capacity < new_size)
-                {
-                    auto const new_capacity =
-                        (old_capacity <= max_size / 3 * 2)
-                            ? ranges::max(old_capacity + old_capacity / 2, new_size)
-                            : max_size;
-                    cont.reserve(new_capacity);
-                }
-                return ranges::begin(cont) + index;
-            }
-
-            template<typename Cont, typename P, typename I, typename S>
-            auto insert_impl(Cont && cont, P p, I i, S j, std::false_type)
-                -> CPP_ret(decltype(unwrap_reference(cont).insert(
-                    p, cpp17_iterator_t<I, S>{i}, cpp17_iterator_t<I, S>{j})))( //
-                    requires sentinel_for<S, I> && (!range<S>))
-            {
-                using C = cpp17_iterator_t<I, S>;
-                return unwrap_reference(cont).insert(p, C{i}, C{j});
-            }
-
-            template<typename Cont, typename P, typename I, typename S>
-            auto insert_impl(Cont && cont_, P p, I i, S j, std::true_type)
-                -> CPP_ret(decltype(unwrap_reference(cont_).insert(
-                    ranges::begin(unwrap_reference(cont_)), cpp17_iterator_t<I, S>{i},
-                    cpp17_iterator_t<I, S>{j})))( //
-                    requires sized_sentinel_for<S, I> && random_access_reservable<Cont> &&
-                    (!range<S>))
-            {
-                using C = cpp17_iterator_t<I, S>;
-                auto && cont = unwrap_reference(cont_);
-                auto const delta = static_cast<range_size_t<Cont>>(j - i);
-                auto pos = insert_reserve_helper(cont, std::move(p), delta);
-                return cont.insert(pos, C{std::move(i)}, C{std::move(j)});
-            }
-
-            template<typename Cont, typename I, typename Rng>
-            auto insert_impl(Cont && cont, I p, Rng && rng, std::false_type)
-                -> CPP_ret(decltype(unwrap_reference(cont).insert(
-                    p, range_cpp17_iterator_t<Rng>{ranges::begin(rng)},
-                    range_cpp17_iterator_t<Rng>{ranges::end(rng)})))( //
-                    requires range<Rng>)
-            {
-                using C = range_cpp17_iterator_t<Rng>;
-                return unwrap_reference(cont).insert(
-                    p, C{ranges::begin(rng)}, C{ranges::end(rng)});
-            }
-
-            template<typename Cont, typename I, typename Rng>
-            auto insert_impl(Cont && cont_, I p, Rng && rng, std::true_type)
-                -> CPP_ret(decltype(unwrap_reference(cont_).insert(
-                    begin(unwrap_reference(cont_)),
-                    range_cpp17_iterator_t<Rng>{ranges::begin(rng)},
-                    range_cpp17_iterator_t<Rng>{ranges::end(rng)})))( //
-                    requires random_access_reservable<Cont> && sized_range<Rng>)
-            {
-                using C = range_cpp17_iterator_t<Rng>;
-                auto && cont = unwrap_reference(cont_);
-                auto const delta = static_cast<range_size_t<Cont>>(ranges::size(rng));
-                auto pos = insert_reserve_helper(cont, std::move(p), delta);
-                return cont.insert(pos, C{ranges::begin(rng)}, C{ranges::end(rng)});
-            }
-        } // namespace detail
-        /// \endcond
-
-        template<typename Cont, typename P, typename I, typename S>
-        auto insert(Cont && cont, P p, I i, S j) -> CPP_ret(decltype(detail::insert_impl(
-            static_cast<Cont &&>(cont), std::move(p), std::move(i), std::move(j),
-            meta::bool_<random_access_reservable<Cont> &&
-                        sized_sentinel_for<S, I>>{})))( //
-            requires lvalue_container_like<Cont> && input_iterator<P> &&
-                sentinel_for<S, I> &&
-            (!range<S>))
-        {
-            return detail::insert_impl(static_cast<Cont &&>(cont),
-                                       std::move(p),
-                                       std::move(i),
-                                       std::move(j),
-                                       meta::bool_ < random_access_reservable<Cont> &&
-                                           sized_sentinel_for<S, I>> {});
-        }
-
-        template<typename Cont, typename I, typename Rng>
-        auto insert(Cont && cont, I p, Rng && rng)
-            -> CPP_ret(decltype(detail::insert_impl(
-                static_cast<Cont &&>(cont), std::move(p), static_cast<Rng &&>(rng),
-                meta::bool_<random_access_reservable<Cont> && sized_range<Rng>>{})))( //
-                requires lvalue_container_like<Cont> && input_iterator<I> && range<Rng>)
-        {
-            return detail::insert_impl(static_cast<Cont &&>(cont),
-                                       std::move(p),
-                                       static_cast<Rng &&>(rng),
-                                       meta::bool_ < random_access_reservable<Cont> &&
-                                           sized_range<Rng>> {});
-        }
-
-        struct insert_fn
-        {
-            template<typename Rng, typename... Args>
-            using insert_result_t =
-                decltype(insert(std::declval<Rng>(), std::declval<Args>()...));
-
-            template<typename Rng, typename T>
-            auto operator()(Rng && rng, T && t) const
-                -> CPP_ret(insert_result_t<Rng, T>)( //
-                    requires range<Rng> &&
-                    (!range<T>)&&constructible_from<range_value_t<Rng>, T>)
-            {
-                return insert(static_cast<Rng &&>(rng), static_cast<T &&>(t));
-            }
-
-            template<typename Rng, typename Rng2>
-            auto operator()(Rng && rng, Rng2 && rng2) const
-                -> CPP_ret(insert_result_t<Rng, Rng2>)( //
-                    requires range<Rng> && range<Rng2>)
-            {
-                static_assert(!is_infinite<Rng>::value,
-                              "Attempting to insert an infinite range into a container");
-                return insert(static_cast<Rng &&>(rng), static_cast<Rng2 &&>(rng2));
-            }
-
-            template<typename Rng, typename T>
-            auto operator()(Rng && rng, std::initializer_list<T> rng2) const
-                -> CPP_ret(insert_result_t<Rng, std::initializer_list<T> &>)( //
-                    requires range<Rng>)
-            {
-                return insert(static_cast<Rng &&>(rng), rng2);
-            }
-
-            template<typename Rng, typename I, typename S>
-            auto operator()(Rng && rng, I i, S j) const
-                -> CPP_ret(insert_result_t<Rng, I, S>)( //
-                    requires range<Rng> && sentinel_for<S, I> && (!range<S>))
-            {
-                return insert(static_cast<Rng &&>(rng), std::move(i), std::move(j));
-            }
-
-            template<typename Rng, typename I, typename T>
-            auto operator()(Rng && rng, I p, T && t) const
-                -> CPP_ret(insert_result_t<Rng, I, T>)( //
-                    requires range<Rng> && input_iterator<I> &&
-                    (!range<T>)&&constructible_from<range_value_t<Rng>, T>)
-            {
-                return insert(
-                    static_cast<Rng &&>(rng), std::move(p), static_cast<T &&>(t));
-            }
-
-            template<typename Rng, typename I, typename Rng2>
-            auto operator()(Rng && rng, I p, Rng2 && rng2) const
-                -> CPP_ret(insert_result_t<Rng, I, Rng2>)( //
-                    requires range<Rng> && input_iterator<I> && range<Rng2>)
-            {
-                static_assert(!is_infinite<Rng>::value,
-                              "Attempting to insert an infinite range into a container");
-                return insert(
-                    static_cast<Rng &&>(rng), std::move(p), static_cast<Rng2 &&>(rng2));
-            }
-
-            template<typename Rng, typename I, typename T>
-            auto operator()(Rng && rng, I p, std::initializer_list<T> rng2) const
-                -> CPP_ret(insert_result_t<Rng, I, std::initializer_list<T> &>)( //
-                    requires range<Rng> && input_iterator<I>)
-            {
-                return insert(static_cast<Rng &&>(rng), std::move(p), rng2);
-            }
-
-            template<typename Rng, typename I, typename N, typename T>
-            auto operator()(Rng && rng, I p, N n, T && t) const
-                -> CPP_ret(insert_result_t<Rng, I, N, T>)( //
-                    requires range<Rng> && input_iterator<I> && integral<N> &&
-                    (!range<T>)&&constructible_from<range_value_t<Rng>, T>)
-            {
-                return insert(
-                    static_cast<Rng &&>(rng), std::move(p), n, static_cast<T &&>(t));
-            }
-
-            template<typename Rng, typename P, typename I, typename S>
-            auto operator()(Rng && rng, P p, I i, S j) const
-                -> CPP_ret(insert_result_t<Rng, P, I, S>)( //
-                    requires range<Rng> && input_iterator<P> && sentinel_for<S, I> &&
-                    (!range<S>))
-            {
-                return insert(
-                    static_cast<Rng &&>(rng), std::move(p), std::move(i), std::move(j));
-            }
-        };
-    } // namespace adl_insert_detail
-    /// \endcond
-
-    /// \ingroup group-actions
-    RANGES_INLINE_VARIABLE(adl_insert_detail::insert_fn, insert)
-
-    namespace actions
-    {
-        using ranges::insert;
-    }
-} // namespace ranges
-
-#endif

external/repo/range-v3/include/range/v3/action/join.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2013-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-
-#ifndef RANGES_V3_ACTION_JOIN_HPP
-#define RANGES_V3_ACTION_JOIN_HPP
-
-#include <vector>
-
-#include <meta/meta.hpp>
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/action/action.hpp>
-#include <range/v3/action/concepts.hpp>
-#include <range/v3/action/push_back.hpp>
-#include <range/v3/iterator/concepts.hpp>
-#include <range/v3/iterator/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    /// \addtogroup group-actions
-    /// @{
-    namespace actions
-    {
-        template<typename Rng>
-        using join_action_value_t_ =
-            meta::if_c<(bool)ranges::container<range_value_t<Rng>>, range_value_t<Rng>,
-                       std::vector<range_value_t<range_value_t<Rng>>>>;
-
-        struct join_fn
-        {
-        public:
-            template<typename Rng>
-            auto operator()(Rng && rng) const -> CPP_ret(join_action_value_t_<Rng>)( //
-                requires input_range<Rng> && input_range<range_value_t<Rng>> &&
-                    semiregular<join_action_value_t_<Rng>>)
-            {
-                join_action_value_t_<Rng> ret;
-                auto last = ranges::end(rng);
-                for(auto it = begin(rng); it != last; ++it)
-                    push_back(ret, *it);
-                return ret;
-            }
-        };
-
-        /// \ingroup group-actions
-        /// \relates join_fn
-        /// \sa action
-        RANGES_INLINE_VARIABLE(action<join_fn>, join)
-    } // namespace actions
-    /// @}
-} // namespace ranges
-
-#endif

external/repo/range-v3/include/range/v3/action/push_back.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2013-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-
-#ifndef RANGES_V3_ACTION_PUSH_BACK_HPP
-#define RANGES_V3_ACTION_PUSH_BACK_HPP
-
-#include <utility>
-
-#include <meta/meta.hpp>
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/action/action.hpp>
-#include <range/v3/action/insert.hpp>
-#include <range/v3/detail/with_braced_init_args.hpp>
-#include <range/v3/functional/bind_back.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    /// \cond
-    namespace adl_push_back_detail
-    {
-        template<typename Cont, typename T>
-        using push_back_t = decltype(static_cast<void>(
-            unwrap_reference(std::declval<Cont &>()).push_back(std::declval<T>())));
-
-        template<typename Cont, typename Rng>
-        using insert_t = decltype(static_cast<void>(
-            ranges::insert(std::declval<Cont &>(), std::declval<sentinel_t<Cont>>(),
-                           std::declval<Rng>())));
-
-        template<typename Cont, typename T>
-        auto push_back(Cont && cont, T && t) -> CPP_ret(push_back_t<Cont, T>)( //
-            requires lvalue_container_like<Cont> &&
-            (!range<T>)&&constructible_from<range_value_t<Cont>, T>)
-        {
-            unwrap_reference(cont).push_back(static_cast<T &&>(t));
-        }
-
-        template<typename Cont, typename Rng>
-        auto push_back(Cont && cont, Rng && rng) -> CPP_ret(insert_t<Cont, Rng>)( //
-            requires lvalue_container_like<Cont> && range<Rng>)
-        {
-            ranges::insert(cont, end(cont), static_cast<Rng &&>(rng));
-        }
-
-        /// \cond
-        // clang-format off
-        CPP_def
-        (
-            template(typename Rng, typename T)
-            concept can_push_back_,
-                requires (Rng &&rng, T &&t)
-                (
-                    push_back(rng, (T &&) t)
-                )
-        );
-        // clang-format on
-        /// \endcond
-
-        struct push_back_fn
-        {
-        private:
-            friend actions::action_access;
-            template<typename T>
-            static auto bind(push_back_fn push_back, T && val)
-            {
-                return bind_back(push_back, static_cast<T &&>(val));
-            }
-#ifdef RANGES_WORKAROUND_MSVC_OLD_LAMBDA
-            template<typename T, std::size_t N>
-            struct lamduh
-            {
-                T (&val_)[N];
-
-                template<typename Rng>
-                auto operator()(Rng && rng) const
-                    -> invoke_result_t<push_back_fn, Rng, T (&)[N]>
-                {
-                    return push_back_fn{}(static_cast<Rng &&>(rng), val_);
-                }
-            };
-            template<typename T, std::size_t N>
-            static lamduh<T, N> bind(push_back_fn, T (&val)[N])
-            {
-                return {val};
-            }
-#else  // ^^^ workaround / no workaround vvv
-            template<typename T, std::size_t N>
-            static auto bind(push_back_fn, T (&val)[N])
-            {
-                return [&val](auto && rng)
-                           -> invoke_result_t<push_back_fn, decltype(rng), T(&)[N]>
-                {
-                    return push_back_fn{}(static_cast<decltype(rng)>(rng), val);
-                };
-            }
-#endif // RANGES_WORKAROUND_MSVC_OLD_LAMBDA
-        public:
-            template<typename Rng, typename T>
-            auto operator()(Rng && rng, T && t) const -> CPP_ret(Rng)( //
-                requires input_range<Rng> && can_push_back_<Rng, T> &&
-                (range<T> || constructible_from<range_value_t<Rng>, T>))
-            {
-                push_back(rng, static_cast<T &&>(t));
-                return static_cast<Rng &&>(rng);
-            }
-        };
-    } // namespace adl_push_back_detail
-    /// \endcond
-
-    namespace actions
-    {
-        /// \ingroup group-actions
-        RANGES_INLINE_VARIABLE(
-            detail::with_braced_init_args<action<adl_push_back_detail::push_back_fn>>,
-            push_back)
-    } // namespace actions
-
-    using actions::push_back;
-} // namespace ranges
-
-#endif

external/repo/range-v3/include/range/v3/action/push_front.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2013-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-
-#ifndef RANGES_V3_ACTION_PUSH_FRONT_HPP
-#define RANGES_V3_ACTION_PUSH_FRONT_HPP
-
-#include <utility>
-
-#include <meta/meta.hpp>
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/action/action.hpp>
-#include <range/v3/action/insert.hpp>
-#include <range/v3/detail/with_braced_init_args.hpp>
-#include <range/v3/functional/bind_back.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    /// \cond
-    namespace adl_push_front_detail
-    {
-        template<typename Cont, typename T>
-        using push_front_t = decltype(static_cast<void>(
-            unwrap_reference(std::declval<Cont &>()).push_front(std::declval<T>())));
-
-        template<typename Cont, typename Rng>
-        using insert_t = decltype(static_cast<void>(
-            ranges::insert(std::declval<Cont &>(), std::declval<iterator_t<Cont>>(),
-                           std::declval<Rng>())));
-
-        template<typename Cont, typename T>
-        auto push_front(Cont && cont, T && t) -> CPP_ret(push_front_t<Cont, T>)( //
-            requires lvalue_container_like<Cont> &&
-            (!range<T>)&&constructible_from<range_value_t<Cont>, T>)
-        {
-            unwrap_reference(cont).push_front(static_cast<T &&>(t));
-        }
-
-        template<typename Cont, typename Rng>
-        auto push_front(Cont && cont, Rng && rng) -> CPP_ret(insert_t<Cont, Rng>)( //
-            requires lvalue_container_like<Cont> && range<Rng>)
-        {
-            ranges::insert(cont, begin(cont), static_cast<Rng &&>(rng));
-        }
-
-        // clang-format off
-        CPP_def
-        (
-            template(typename Rng, typename T)
-            concept can_push_front_,
-                requires (Rng &&rng, T &&t)
-                (
-                    push_front(rng, (T &&) t)
-                )
-        );
-        // clang-format on
-
-        struct push_front_fn
-        {
-        private:
-            friend actions::action_access;
-            template<typename T>
-            static auto bind(push_front_fn push_front, T && val)
-            {
-                return bind_back(push_front, static_cast<T &&>(val));
-            }
-#ifdef RANGES_WORKAROUND_MSVC_OLD_LAMBDA
-            template<typename T, std::size_t N>
-            struct lamduh
-            {
-                T (&val_)[N];
-
-                template<typename Rng>
-                auto operator()(Rng && rng) const
-                    -> invoke_result_t<push_front_fn, Rng, T (&)[N]>
-                {
-                    return push_front_fn{}(static_cast<Rng &&>(rng), val_);
-                }
-            };
-            template<typename T, std::size_t N>
-            static lamduh<T, N> bind(push_front_fn, T (&val)[N])
-            {
-                return {val};
-            }
-#else  // ^^^ workaround / no workaround vvv
-            template<typename T, std::size_t N>
-            static auto bind(push_front_fn, T (&val)[N])
-            {
-                return [&val](auto && rng)
-                           -> invoke_result_t<push_front_fn, decltype(rng), T(&)[N]>
-                {
-                    return push_front_fn{}(static_cast<decltype(rng)>(rng), val);
-                };
-            }
-#endif // RANGES_WORKAROUND_MSVC_OLD_LAMBDA
-        public:
-            template<typename Rng, typename T>
-            auto operator()(Rng && rng, T && t) const -> CPP_ret(Rng)( //
-                requires input_range<Rng> && can_push_front_<Rng, T> &&
-                (range<T> || constructible_from<range_value_t<Rng>, T>))
-            {
-                push_front(rng, static_cast<T &&>(t));
-                return static_cast<Rng &&>(rng);
-            }
-        };
-    } // namespace adl_push_front_detail
-    /// \endcond
-
-    namespace actions
-    {
-        /// \ingroup group-actions
-        RANGES_INLINE_VARIABLE(
-            detail::with_braced_init_args<action<adl_push_front_detail::push_front_fn>>,
-            push_front)
-    } // namespace actions
-
-    using actions::push_front;
-} // namespace ranges
-
-#endif

external/repo/range-v3/include/range/v3/action/remove.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Andrey Diduh 2019
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-#ifndef RANGES_V3_ACTION_REMOVE_HPP
-#define RANGES_V3_ACTION_REMOVE_HPP
-
-#include <meta/meta.hpp>
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/action/action.hpp>
-#include <range/v3/action/erase.hpp>
-#include <range/v3/algorithm/remove.hpp>
-#include <range/v3/functional/bind_back.hpp>
-#include <range/v3/range/concepts.hpp>
-#include <range/v3/range/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    /// \addtogroup group-actions
-    /// @{
-    namespace actions
-    {
-        struct remove_fn
-        {
-        private:
-            friend action_access;
-            template<typename V, typename P>
-            static auto CPP_fun(bind)(remove_fn remove, V && value, P proj)( //
-                requires(!range<V>))
-            {
-                return bind_back(remove, static_cast<V &&>(value), std::move(proj));
-            }
-            template<typename V>
-            static auto bind(remove_fn remove, V && value)
-            {
-                return bind_back(remove, static_cast<V &&>(value), identity{});
-            }
-
-        public:
-            template<typename Rng, typename V, typename P = identity>
-            auto operator()(Rng && rng, V const & value, P proj = {}) const
-                -> CPP_ret(Rng)( //
-                    requires forward_range<Rng> && permutable<iterator_t<Rng>> &&
-                        erasable_range<Rng, iterator_t<Rng>, sentinel_t<Rng>> &&
-                            indirect_relation<equal_to, projected<iterator_t<Rng>, P>,
-                                              V const *>)
-            {
-                auto it = ranges::remove(rng, value, std::move(proj));
-                ranges::erase(rng, it, ranges::end(rng));
-                return static_cast<Rng &&>(rng);
-            }
-        };
-        /// \ingroup group-actions
-        /// \sa action
-        /// \sa with_braced_init_args
-        RANGES_INLINE_VARIABLE(action<remove_fn>, remove)
-    } // namespace actions
-    /// @}
-} // namespace ranges
-
-#endif // include guard

external/repo/range-v3/include/range/v3/action/remove_if.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2013-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-
-#ifndef RANGES_V3_ACTION_REMOVE_IF_HPP
-#define RANGES_V3_ACTION_REMOVE_IF_HPP
-
-#include <utility>
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/action/action.hpp>
-#include <range/v3/action/erase.hpp>
-#include <range/v3/algorithm/remove_if.hpp>
-#include <range/v3/functional/bind_back.hpp>
-#include <range/v3/functional/identity.hpp>
-#include <range/v3/range/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    // TODO Look at all the special cases handled by erase_if in Library Fundamentals 2
-
-    /// \addtogroup group-actions
-    /// @{
-    namespace actions
-    {
-        struct remove_if_fn
-        {
-        private:
-            friend action_access;
-            template<typename C, typename P = identity>
-            static auto CPP_fun(bind)(remove_if_fn remove_if, C pred, P proj = P{})( //
-                requires(!range<C>))
-            {
-                return bind_back(remove_if, std::move(pred), std::move(proj));
-            }
-
-        public:
-            template<typename Rng, typename C, typename P = identity>
-            auto operator()(Rng && rng, C pred, P proj = P{}) const -> CPP_ret(Rng)( //
-                requires forward_range<Rng> &&
-                    erasable_range<Rng &, iterator_t<Rng>, iterator_t<Rng>> &&
-                        permutable<iterator_t<Rng>> &&
-                            indirect_unary_predicate<C, projected<iterator_t<Rng>, P>>)
-            {
-                auto it = ranges::remove_if(rng, std::move(pred), std::move(proj));
-                ranges::erase(rng, it, ranges::end(rng));
-                return static_cast<Rng &&>(rng);
-            }
-        };
-
-        /// \ingroup group-actions
-        /// \sa action
-        RANGES_INLINE_VARIABLE(action<remove_if_fn>, remove_if)
-    } // namespace actions
-    /// @}
-} // namespace ranges
-
-#endif

external/repo/range-v3/include/range/v3/action/reverse.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2013-present
-//  Copyright Gonzalo Brito Gadeschi 2017
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-
-#ifndef RANGES_V3_ACTION_REVERSE_HPP
-#define RANGES_V3_ACTION_REVERSE_HPP
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/action/action.hpp>
-#include <range/v3/algorithm/reverse.hpp>
-#include <range/v3/iterator/concepts.hpp>
-#include <range/v3/range/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    /// \addtogroup group-actions
-    /// @{
-    namespace actions
-    {
-        /// Reversed the source range in-place.
-        struct reverse_fn
-        {
-        private:
-            friend action_access;
-
-        public:
-            template<typename Rng>
-            auto operator()(Rng && rng) const -> CPP_ret(Rng)( //
-                requires bidirectional_range<Rng> && permutable<iterator_t<Rng>>)
-            {
-                ranges::reverse(rng);
-                return static_cast<Rng &&>(rng);
-            }
-        };
-
-        /// \ingroup group-actions
-        /// \relates reverse_fn
-        /// \sa action
-        RANGES_INLINE_VARIABLE(action<reverse_fn>, reverse)
-    } // namespace actions
-    /// @}
-} // namespace ranges
-
-#endif

external/repo/range-v3/include/range/v3/action/shuffle.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Filip Matzner 2015
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-
-#ifndef RANGES_V3_ACTION_SHUFFLE_HPP
-#define RANGES_V3_ACTION_SHUFFLE_HPP
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/action/action.hpp>
-#include <range/v3/algorithm/shuffle.hpp>
-#include <range/v3/functional/bind.hpp>
-#include <range/v3/functional/bind_back.hpp>
-#include <range/v3/functional/invoke.hpp>
-#include <range/v3/iterator/concepts.hpp>
-#include <range/v3/iterator/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    /// \addtogroup group-actions
-    /// @{
-    namespace actions
-    {
-        struct shuffle_fn
-        {
-        private:
-            friend action_access;
-            template<typename Gen>
-            static auto CPP_fun(bind)(shuffle_fn shuffle, Gen && gen)( //
-                requires uniform_random_bit_generator<Gen>)
-            {
-                return bind_back(shuffle, static_cast<Gen &&>(gen));
-            }
-#ifdef RANGES_WORKAROUND_MSVC_OLD_LAMBDA
-            template<typename Gen>
-            struct lamduh
-            {
-                Gen & gen_;
-
-                template<typename Rng>
-                auto operator()(Rng && rng) const
-                    -> invoke_result_t<shuffle_fn, Rng, Gen &>
-                {
-                    return shuffle_fn{}(static_cast<Rng &&>(rng), gen_);
-                }
-            };
-
-            template<typename Gen>
-            static lamduh<Gen> CPP_fun(bind)(shuffle_fn, Gen & gen)( //
-                requires uniform_random_bit_generator<Gen>)
-            {
-                return {gen};
-            }
-#else  // ^^^ workaround / no workaround vvv
-            template<typename Gen>
-            static auto CPP_fun(bind)(shuffle_fn, Gen & gen)( //
-                requires uniform_random_bit_generator<Gen>)
-            {
-                return [&gen](auto && rng)
-                           -> invoke_result_t<shuffle_fn, decltype(rng), Gen &> {
-                    return shuffle_fn{}(static_cast<decltype(rng)>(rng), gen);
-                };
-            }
-#endif // RANGES_WORKAROUND_MSVC_OLD_LAMBDA
-
-        public:
-            template<typename Rng, typename Gen>
-            auto operator()(Rng && rng, Gen && gen) const -> CPP_ret(Rng)( //
-                requires random_access_range<Rng> && permutable<iterator_t<Rng>> &&
-                    uniform_random_bit_generator<std::remove_reference_t<Gen>> &&
-                        convertible_to<invoke_result_t<Gen &>, range_difference_t<Rng>>)
-            {
-                ranges::shuffle(rng, static_cast<Gen &&>(gen));
-                return static_cast<Rng &&>(rng);
-            }
-        };
-
-        /// \ingroup group-actions
-        /// \relates shuffle_fn
-        /// \sa `action`
-        RANGES_INLINE_VARIABLE(action<shuffle_fn>, shuffle)
-    } // namespace actions
-    /// @}
-} // namespace ranges
-
-#endif

external/repo/range-v3/include/range/v3/action/slice.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2013-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-
-#ifndef RANGES_V3_ACTION_SLICE_HPP
-#define RANGES_V3_ACTION_SLICE_HPP
-
-#include <meta/meta.hpp>
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/action/action.hpp>
-#include <range/v3/action/erase.hpp>
-#include <range/v3/functional/bind_back.hpp>
-#include <range/v3/iterator/concepts.hpp>
-#include <range/v3/iterator/operations.hpp>
-#include <range/v3/iterator/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-#include <range/v3/view/interface.hpp>
-
-namespace ranges
-{
-    /// \addtogroup group-actions
-    /// @{
-    namespace actions
-    {
-        struct slice_fn
-        {
-        private:
-            friend action_access;
-
-            template<typename D>
-            using diff_t = range_difference_t<D>;
-
-            // Overloads for the pipe syntax: rng | actions::slice(from, to)
-            template<typename D>
-            static auto CPP_fun(bind)(slice_fn slice, D from, D to)( //
-                requires integral<D>)
-            {
-                return bind_back(slice, from, to);
-            }
-            template<typename D>
-            static auto CPP_fun(bind)(slice_fn slice, D from, detail::from_end_<D> to)( //
-                requires integral<D>)
-            {
-                return bind_back(slice, from, to);
-            }
-            template<typename D>
-            static auto CPP_fun(bind)(slice_fn slice, detail::from_end_<D> from,
-                                      detail::from_end_<D> to)( //
-                requires integral<D>)
-            {
-                return bind_back(slice, from, to);
-            }
-            template<typename D>
-            static auto CPP_fun(bind)(slice_fn slice, D from, end_fn const & to)( //
-                requires integral<D>)
-            {
-                return bind_back(slice, from, to);
-            }
-            template<typename D>
-            static auto CPP_fun(bind)(slice_fn slice, detail::from_end_<D> from,
-                                      end_fn const & to)( //
-                requires integral<D>)
-            {
-                return bind_back(slice, from, to);
-            }
-
-        public:
-            template<typename Rng, typename I = iterator_t<Rng>>
-            auto operator()(Rng && rng, diff_t<Rng> from, diff_t<Rng> to) const
-                -> CPP_ret(Rng)( //
-                    requires forward_range<Rng> && erasable_range<Rng &, I, I>)
-            {
-                RANGES_EXPECT(0 <= from && 0 <= to && from <= to);
-                RANGES_EXPECT(!sized_range<Rng> || to <= distance(rng));
-                ranges::actions::erase(rng, begin(rng), next(begin(rng), from));
-                ranges::actions::erase(rng, next(begin(rng), to - from), end(rng));
-                return static_cast<Rng &&>(rng);
-            }
-
-            template<typename Rng, typename I = iterator_t<Rng>>
-            auto operator()(Rng && rng, diff_t<Rng> from,
-                            detail::from_end_<diff_t<Rng>> to) const -> CPP_ret(Rng)( //
-                requires bidirectional_range<Rng> && erasable_range<Rng &, I, I>)
-            {
-                RANGES_EXPECT(0 <= from && to.dist_ <= 0);
-                RANGES_EXPECT(!sized_range<Rng> || from - to.dist_ <= distance(rng));
-                ranges::actions::erase(rng, begin(rng), next(begin(rng), from));
-                if(to.dist_ != 0)
-                {
-                    auto const last = next(begin(rng), end(rng));
-                    ranges::actions::erase(rng, prev(last, -to.dist_), last);
-                }
-                return static_cast<Rng &&>(rng);
-            }
-
-            template<typename Rng, typename I = iterator_t<Rng>>
-            auto operator()(Rng && rng, detail::from_end_<diff_t<Rng>> from,
-                            detail::from_end_<diff_t<Rng>> to) const -> CPP_ret(Rng)( //
-                requires bidirectional_range<Rng> && erasable_range<Rng &, I, I>)
-            {
-                RANGES_EXPECT(from.dist_ <= 0 && to.dist_ <= 0 && from.dist_ <= to.dist_);
-                RANGES_EXPECT(!sized_range<Rng> || 0 <= distance(rng) + from.dist_);
-                auto last = next(begin(rng), end(rng));
-                ranges::actions::erase(rng, prev(last, -to.dist_), last);
-                last = next(begin(rng), end(rng));
-                ranges::actions::erase(
-                    rng, begin(rng), prev(last, to.dist_ - from.dist_));
-                return static_cast<Rng &&>(rng);
-            }
-
-            template<typename Rng, typename I = iterator_t<Rng>>
-            auto operator()(Rng && rng, diff_t<Rng> from, end_fn const &) const
-                -> CPP_ret(Rng)( //
-                    requires forward_range<Rng> && erasable_range<Rng &, I, I>)
-            {
-                RANGES_EXPECT(0 <= from);
-                RANGES_EXPECT(!sized_range<Rng> || from <= distance(rng));
-                ranges::actions::erase(rng, begin(rng), next(begin(rng), from));
-                return static_cast<Rng &&>(rng);
-            }
-
-            template<typename Rng, typename I = iterator_t<Rng>>
-            auto operator()(Rng && rng, detail::from_end_<diff_t<Rng>> from,
-                            end_fn const &) const -> CPP_ret(Rng)( //
-                requires bidirectional_range<Rng> && erasable_range<Rng &, I, I>)
-            {
-                RANGES_EXPECT(from.dist_ <= 0);
-                RANGES_EXPECT(!sized_range<Rng> || 0 <= distance(rng) + from.dist_);
-                auto const last = next(begin(rng), end(rng));
-                ranges::actions::erase(rng, begin(rng), prev(last, -from.dist_));
-                return static_cast<Rng &&>(rng);
-            }
-        };
-
-        /// \ingroup group-actions
-        /// \relates slice_fn
-        /// \sa action
-        RANGES_INLINE_VARIABLE(action<slice_fn>, slice)
-    } // namespace actions
-    /// @}
-} // namespace ranges
-
-#endif

external/repo/range-v3/include/range/v3/action/sort.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2013-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-
-#ifndef RANGES_V3_ACTION_SORT_HPP
-#define RANGES_V3_ACTION_SORT_HPP
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/action/action.hpp>
-#include <range/v3/algorithm/sort.hpp>
-#include <range/v3/functional/bind_back.hpp>
-#include <range/v3/functional/comparisons.hpp>
-#include <range/v3/functional/identity.hpp>
-#include <range/v3/iterator/concepts.hpp>
-#include <range/v3/iterator/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    /// \addtogroup group-actions
-    /// @{
-    namespace actions
-    {
-        struct sort_fn
-        {
-        private:
-            friend action_access;
-            template<typename C, typename P = identity>
-            static auto CPP_fun(bind)(sort_fn sort, C pred, P proj = {})( //
-                requires(!range<C>))
-            {
-                return bind_back(sort, std::move(pred), std::move(proj));
-            }
-
-        public:
-            template<typename Rng, typename C = less, typename P = identity>
-            auto operator()(Rng && rng, C pred = {}, P proj = {}) const
-                -> CPP_ret(Rng)( //
-                    requires forward_range<Rng> && sortable<iterator_t<Rng>, C, P>)
-            {
-                ranges::sort(rng, std::move(pred), std::move(proj));
-                return static_cast<Rng &&>(rng);
-            }
-        };
-
-        /// \ingroup group-actions
-        /// \relates sort_fn
-        /// \sa `action`
-        RANGES_INLINE_VARIABLE(action<sort_fn>, sort)
-    } // namespace actions
-    /// @}
-} // namespace ranges
-
-#endif

external/repo/range-v3/include/range/v3/action/split.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2013-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-
-#ifndef RANGES_V3_ACTION_SPLIT_HPP
-#define RANGES_V3_ACTION_SPLIT_HPP
-
-#include <vector>
-
-#include <meta/meta.hpp>
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/action/action.hpp>
-#include <range/v3/action/concepts.hpp>
-#include <range/v3/iterator/concepts.hpp>
-#include <range/v3/iterator/traits.hpp>
-#include <range/v3/range/conversion.hpp>
-#include <range/v3/utility/static_const.hpp>
-#include <range/v3/view/split.hpp>
-#include <range/v3/view/transform.hpp>
-
-namespace ranges
-{
-    /// \addtogroup group-actions
-    /// @{
-    namespace actions
-    {
-        struct split_fn
-        {
-        private:
-            template<typename Rng>
-            using split_value_t = meta::if_c<(bool)ranges::container<Rng>, uncvref_t<Rng>,
-                                             std::vector<range_value_t<Rng>>>;
-
-        public:
-            // BUGBUG something is not right with the actions. It should be possible
-            // to move a container into a split and have elements moved into the result.
-            template<typename Rng>
-            auto operator()(Rng && rng, range_value_t<Rng> val) const
-                -> CPP_ret(std::vector<split_value_t<Rng>>)( //
-                    requires input_range<Rng> && indirectly_comparable<
-                        iterator_t<Rng>, range_value_t<Rng> const *, ranges::equal_to>)
-            {
-                return views::split(rng, std::move(val)) |
-                       views::transform(to<split_value_t<Rng>>()) | to_vector;
-            }
-            template<typename Rng, typename Pattern>
-            auto operator()(Rng && rng, Pattern && pattern) const
-                -> CPP_ret(std::vector<split_value_t<Rng>>)( //
-                    requires input_range<Rng> && viewable_range<Pattern> &&
-                        forward_range<Pattern> && indirectly_comparable<
-                            iterator_t<Rng>, iterator_t<Pattern>, ranges::equal_to> &&
-                    (forward_range<Rng> || detail::tiny_range<Pattern>))
-            {
-                return views::split(rng, static_cast<Pattern &&>(pattern)) |
-                       views::transform(to<split_value_t<Rng>>()) | to_vector;
-            }
-        };
-
-        /// \ingroup group-actions
-        /// \relates split_fn
-        /// \sa action
-        RANGES_INLINE_VARIABLE(action<split_fn>, split)
-    } // namespace actions
-    /// @}
-} // namespace ranges
-
-#endif

external/repo/range-v3/include/range/v3/action/split_when.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2013-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-
-#ifndef RANGES_V3_ACTION_SPLIT_WHEN_HPP
-#define RANGES_V3_ACTION_SPLIT_WHEN_HPP
-
-#include <vector>
-
-#include <meta/meta.hpp>
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/action/action.hpp>
-#include <range/v3/action/concepts.hpp>
-#include <range/v3/functional/invoke.hpp>
-#include <range/v3/iterator/concepts.hpp>
-#include <range/v3/iterator/traits.hpp>
-#include <range/v3/range/conversion.hpp>
-#include <range/v3/utility/static_const.hpp>
-#include <range/v3/view/split_when.hpp>
-#include <range/v3/view/transform.hpp>
-
-namespace ranges
-{
-    /// \addtogroup group-actions
-    /// @{
-    namespace actions
-    {
-        struct split_when_fn
-        {
-        private:
-            template<typename Rng>
-            using split_value_t = meta::if_c<(bool)ranges::container<Rng>, uncvref_t<Rng>,
-                                             std::vector<range_value_t<Rng>>>;
-
-        public:
-            // BUGBUG something is not right with the actions. It should be possible
-            // to move a container into a split and have elements moved into the result.
-            template<typename Rng, typename Fun>
-            auto operator()(Rng && rng, Fun fun) const       //
-                -> CPP_ret(std::vector<split_value_t<Rng>>)( //
-                    requires forward_range<Rng> &&           //
-                        invocable<Fun &, iterator_t<Rng>, sentinel_t<Rng>> && invocable<
-                            Fun &, iterator_t<Rng>, iterator_t<Rng>> &&
-                            copy_constructible<Fun> && convertible_to<
-                                invoke_result_t<Fun &, iterator_t<Rng>, sentinel_t<Rng>>,
-                                std::pair<bool, iterator_t<Rng>>>)
-            {
-                return views::split_when(rng, std::move(fun)) |
-                       views::transform(to<split_value_t<Rng>>()) | to_vector;
-            }
-            template<typename Rng, typename Fun>
-            auto operator()(Rng && rng, Fun fun) const
-                -> CPP_ret(std::vector<split_value_t<Rng>>)( //
-                    requires forward_range<Rng> && predicate<
-                        Fun const &, range_reference_t<Rng>> && copy_constructible<Fun>)
-            {
-                return views::split_when(rng, std::move(fun)) |
-                       views::transform(to<split_value_t<Rng>>()) | to_vector;
-            }
-        };
-
-        /// \ingroup group-actions
-        /// \relates split_fn
-        /// \sa action
-        RANGES_INLINE_VARIABLE(action<split_when_fn>, split_when)
-    } // namespace actions
-    /// @}
-} // namespace ranges
-
-#endif

external/repo/range-v3/include/range/v3/action/stable_sort.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2013-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-
-#ifndef RANGES_V3_ACTION_STABLE_SORT_HPP
-#define RANGES_V3_ACTION_STABLE_SORT_HPP
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/action/action.hpp>
-#include <range/v3/algorithm/stable_sort.hpp>
-#include <range/v3/functional/bind_back.hpp>
-#include <range/v3/functional/comparisons.hpp>
-#include <range/v3/functional/identity.hpp>
-#include <range/v3/iterator/concepts.hpp>
-#include <range/v3/iterator/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    /// \addtogroup group-actions
-    /// @{
-    namespace actions
-    {
-        struct stable_sort_fn
-        {
-        private:
-            friend action_access;
-            template<typename C, typename P = identity>
-            static auto CPP_fun(bind)(stable_sort_fn stable_sort, C pred,
-                                      P proj = P{})( //
-                requires(!range<C>))
-            {
-                return bind_back(stable_sort, std::move(pred), std::move(proj));
-            }
-
-        public:
-            template<typename Rng, typename C = less, typename P = identity>
-            auto operator()(Rng && rng, C pred = C{}, P proj = P{}) const
-                -> CPP_ret(Rng)( //
-                    requires forward_range<Rng> && sortable<iterator_t<Rng>, C, P>)
-            {
-                ranges::stable_sort(rng, std::move(pred), std::move(proj));
-                return static_cast<Rng &&>(rng);
-            }
-        };
-
-        /// \ingroup group-actions
-        /// \relates stable_sort_fn
-        /// \sa action
-        RANGES_INLINE_VARIABLE(action<stable_sort_fn>, stable_sort)
-    } // namespace actions
-    /// @}
-} // namespace ranges
-
-#endif

external/repo/range-v3/include/range/v3/action/stride.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2013-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-
-#ifndef RANGES_V3_ACTION_STRIDE_HPP
-#define RANGES_V3_ACTION_STRIDE_HPP
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/action/action.hpp>
-#include <range/v3/action/erase.hpp>
-#include <range/v3/functional/bind_back.hpp>
-#include <range/v3/iterator/concepts.hpp>
-#include <range/v3/iterator/operations.hpp>
-#include <range/v3/iterator/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    /// \addtogroup group-actions
-    /// @{
-    namespace actions
-    {
-        struct stride_fn
-        {
-        private:
-            friend action_access;
-            template<typename D>
-            static auto CPP_fun(bind)(stride_fn stride, D step)( //
-                requires integral<D>)
-            {
-                return bind_back(stride, step);
-            }
-
-        public:
-            template<typename Rng, typename D = range_difference_t<Rng>>
-            auto operator()(Rng && rng, range_difference_t<Rng> const step) const
-                -> CPP_ret(Rng)( //
-                    requires forward_range<Rng> &&
-                        erasable_range<Rng &, iterator_t<Rng>, sentinel_t<Rng>> &&
-                            permutable<iterator_t<Rng>>)
-            {
-                using I = iterator_t<Rng>;
-                using S = sentinel_t<Rng>;
-                RANGES_EXPECT(0 < step);
-                if(1 < step)
-                {
-                    I first = ranges::begin(rng);
-                    S const last = ranges::end(rng);
-                    if(first != last)
-                    {
-                        for(I i = ranges::next(++first, step - 1, last); i != last;
-                            advance(i, step, last), ++first)
-                        {
-                            *first = iter_move(i);
-                        }
-                    }
-                    ranges::actions::erase(rng, first, last);
-                }
-                return static_cast<Rng &&>(rng);
-            }
-        };
-
-        /// \ingroup group-actions
-        /// \relates stride_fn
-        /// \sa action
-        RANGES_INLINE_VARIABLE(action<stride_fn>, stride)
-    } // namespace actions
-    /// @}
-} // namespace ranges
-
-#endif

external/repo/range-v3/include/range/v3/action/take.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2013-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-
-#ifndef RANGES_V3_ACTION_TAKE_HPP
-#define RANGES_V3_ACTION_TAKE_HPP
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/action/action.hpp>
-#include <range/v3/action/erase.hpp>
-#include <range/v3/functional/bind_back.hpp>
-#include <range/v3/iterator/concepts.hpp>
-#include <range/v3/iterator/operations.hpp>
-#include <range/v3/iterator/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    /// \addtogroup group-actions
-    /// @{
-    namespace actions
-    {
-        struct take_fn
-        {
-        private:
-            friend action_access;
-            template<typename Int>
-            static auto CPP_fun(bind)(take_fn take, Int n)( //
-                requires integral<Int>)
-            {
-                return bind_back(take, n);
-            }
-
-        public:
-            template<typename Rng>
-            auto operator()(Rng && rng, range_difference_t<Rng> n) const
-                -> CPP_ret(Rng)( //
-                    requires forward_range<Rng> &&
-                        erasable_range<Rng &, iterator_t<Rng>, sentinel_t<Rng>>)
-            {
-                RANGES_EXPECT(n >= 0);
-                ranges::actions::erase(
-                    rng, ranges::next(begin(rng), n, end(rng)), end(rng));
-                return static_cast<Rng &&>(rng);
-            }
-        };
-
-        /// \ingroup group-actions
-        /// \relates take_fn
-        /// \sa action
-        RANGES_INLINE_VARIABLE(action<take_fn>, take)
-    } // namespace actions
-    /// @}
-} // namespace ranges
-
-#endif

external/repo/range-v3/include/range/v3/action/take_while.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2013-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-
-#ifndef RANGES_V3_ACTION_TAKE_WHILE_HPP
-#define RANGES_V3_ACTION_TAKE_WHILE_HPP
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/action/action.hpp>
-#include <range/v3/action/erase.hpp>
-#include <range/v3/algorithm/find_if_not.hpp>
-#include <range/v3/functional/bind_back.hpp>
-#include <range/v3/iterator/concepts.hpp>
-#include <range/v3/iterator/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    /// \addtogroup group-actions
-    /// @{
-    namespace actions
-    {
-        struct take_while_fn
-        {
-        private:
-            friend action_access;
-            template<typename Fun>
-            static auto CPP_fun(bind)(take_while_fn take_while, Fun fun)( //
-                requires(!range<Fun>))
-            {
-                return bind_back(take_while, std::move(fun));
-            }
-
-        public:
-            template<typename Rng, typename Fun>
-            auto operator()(Rng && rng, Fun fun) const -> CPP_ret(Rng)( //
-                requires forward_range<Rng> &&
-                    erasable_range<Rng &, iterator_t<Rng>, sentinel_t<Rng>> &&
-                        indirect_unary_predicate<Fun, iterator_t<Rng>>)
-            {
-                ranges::actions::erase(
-                    rng, find_if_not(begin(rng), end(rng), std::move(fun)), end(rng));
-                return static_cast<Rng &&>(rng);
-            }
-        };
-
-        /// \ingroup group-actions
-        /// \relates take_while_fn
-        /// \sa action
-        RANGES_INLINE_VARIABLE(action<take_while_fn>, take_while)
-    } // namespace actions
-    /// @}
-} // namespace ranges
-
-#endif

external/repo/range-v3/include/range/v3/action/transform.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2013-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-
-#ifndef RANGES_V3_ACTION_TRANSFORM_HPP
-#define RANGES_V3_ACTION_TRANSFORM_HPP
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/action/action.hpp>
-#include <range/v3/algorithm/transform.hpp>
-#include <range/v3/functional/bind_back.hpp>
-#include <range/v3/functional/identity.hpp>
-#include <range/v3/iterator/concepts.hpp>
-#include <range/v3/iterator/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    /// \addtogroup group-actions
-    /// @{
-    namespace actions
-    {
-        struct transform_fn
-        {
-        private:
-            friend action_access;
-            template<typename F, typename P = identity>
-            static auto CPP_fun(bind)(transform_fn transform, F fun, P proj = P{})( //
-                requires(!range<F>))
-            {
-                return bind_back(transform, std::move(fun), std::move(proj));
-            }
-
-        public:
-            template<typename Rng, typename F, typename P = identity>
-            auto operator()(Rng && rng, F fun, P proj = P{}) const -> CPP_ret(Rng)( //
-                requires input_range<Rng> && copy_constructible<F> &&
-                    writable<iterator_t<Rng>,
-                             indirect_result_t<F &, projected<iterator_t<Rng>, P>>>)
-            {
-                ranges::transform(rng, begin(rng), std::move(fun), std::move(proj));
-                return static_cast<Rng &&>(rng);
-            }
-        };
-
-        /// \ingroup group-actions
-        /// \relates transform_fn
-        /// \sa action
-        RANGES_INLINE_VARIABLE(action<transform_fn>, transform)
-    } // namespace actions
-    /// @}
-} // namespace ranges
-
-#endif

external/repo/range-v3/include/range/v3/action/unique.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2013-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-
-#ifndef RANGES_V3_ACTION_UNIQUE_HPP
-#define RANGES_V3_ACTION_UNIQUE_HPP
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/action/action.hpp>
-#include <range/v3/action/erase.hpp>
-#include <range/v3/algorithm/unique.hpp>
-#include <range/v3/functional/bind_back.hpp>
-#include <range/v3/functional/comparisons.hpp>
-#include <range/v3/functional/identity.hpp>
-#include <range/v3/iterator/concepts.hpp>
-#include <range/v3/range/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    /// \addtogroup group-actions
-    /// @{
-    namespace actions
-    {
-        struct unique_fn
-        {
-        private:
-            friend action_access;
-            template<typename C, typename P = identity>
-            static auto CPP_fun(bind)(unique_fn unique, C pred, P proj = P{})( //
-                requires(!range<C>))
-            {
-                return bind_back(unique, std::move(pred), std::move(proj));
-            }
-
-        public:
-            template<typename Rng, typename C = equal_to, typename P = identity>
-            auto operator()(Rng && rng, C pred = C{}, P proj = P{}) const
-                -> CPP_ret(Rng)( //
-                    requires forward_range<Rng> &&
-                        erasable_range<Rng &, iterator_t<Rng>, sentinel_t<Rng>> &&
-                            sortable<iterator_t<Rng>, C, P>)
-            {
-                auto it = ranges::unique(rng, std::move(pred), std::move(proj));
-                ranges::erase(rng, it, end(rng));
-                return static_cast<Rng &&>(rng);
-            }
-        };
-
-        /// \ingroup group-actions
-        /// \relates unique_fn
-        /// \sa action
-        RANGES_INLINE_VARIABLE(action<unique_fn>, unique)
-    } // namespace actions
-    /// @}
-} // namespace ranges
-
-#endif

external/repo/range-v3/include/range/v3/action/unstable_remove_if.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Andrey Diduh 2019
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-#ifndef RANGES_V3_ACTION_UNSTABLE_REMOVE_IF_HPP
-#define RANGES_V3_ACTION_UNSTABLE_REMOVE_IF_HPP
-
-#include <utility>
-
-#include <concepts/concepts.hpp>
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/action/action.hpp>
-#include <range/v3/action/erase.hpp>
-#include <range/v3/algorithm/unstable_remove_if.hpp>
-#include <range/v3/functional/bind_back.hpp>
-#include <range/v3/functional/identity.hpp>
-#include <range/v3/iterator/concepts.hpp>
-#include <range/v3/range/access.hpp>
-#include <range/v3/range/concepts.hpp>
-
-namespace ranges
-{
-    /// \addtogroup group-actions
-    /// @{
-    namespace actions
-    {
-        struct unstable_remove_if_fn
-        {
-        private:
-            friend action_access;
-            template<typename C, typename P = identity>
-            static auto CPP_fun(bind)(unstable_remove_if_fn unstable_remove_if, C pred,
-                                      P proj = P{})( //
-                requires(!range<C>))
-            {
-                return bind_back(unstable_remove_if, std::move(pred), std::move(proj));
-            }
-
-        public:
-            template<typename Rng, typename C, typename P = identity>
-            auto operator()(Rng && rng, C pred, P proj = P{}) const -> CPP_ret(Rng)( //
-                requires bidirectional_range<Rng> && common_range<Rng> &&
-                    permutable<iterator_t<Rng>> &&
-                        indirect_unary_predicate<C, projected<iterator_t<Rng>, P>> &&
-                            erasable_range<Rng, iterator_t<Rng>, iterator_t<Rng>>)
-            {
-                auto it = ranges::unstable_remove_if(ranges::begin(rng),
-                                                     ranges::end(rng),
-                                                     std::move(pred),
-                                                     std::move(proj));
-                ranges::erase(rng, it, ranges::end(rng));
-                return static_cast<Rng &&>(rng);
-            }
-        };
-
-        /// \ingroup group-actions
-        /// \sa `action`
-        /// \sa `actions::unstable_remove_if_fn`
-        RANGES_INLINE_VARIABLE(action<unstable_remove_if_fn>, unstable_remove_if)
-    } // namespace actions
-    /// @}
-} // namespace ranges
-
-#endif // RANGES_V3_ACTION_UNSTABLE_REMOVE_IF_HPP

external/repo/range-v3/include/range/v3/algorithm.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2013-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-
-#ifndef RANGES_V3_ALGORITHM_HPP
-#define RANGES_V3_ALGORITHM_HPP
-
-#include <range/v3/detail/config.hpp>
-RANGES_DISABLE_WARNINGS
-
-#include <range/v3/algorithm/adjacent_find.hpp>
-#include <range/v3/algorithm/adjacent_remove_if.hpp>
-#include <range/v3/algorithm/all_of.hpp>
-#include <range/v3/algorithm/any_of.hpp>
-#include <range/v3/algorithm/binary_search.hpp>
-#include <range/v3/algorithm/copy.hpp>
-#include <range/v3/algorithm/copy_backward.hpp>
-#include <range/v3/algorithm/copy_if.hpp>
-#include <range/v3/algorithm/copy_n.hpp>
-#include <range/v3/algorithm/count.hpp>
-#include <range/v3/algorithm/count_if.hpp>
-#include <range/v3/algorithm/ends_with.hpp>
-#include <range/v3/algorithm/equal.hpp>
-#include <range/v3/algorithm/equal_range.hpp>
-#include <range/v3/algorithm/fill.hpp>
-#include <range/v3/algorithm/fill_n.hpp>
-#include <range/v3/algorithm/find.hpp>
-#include <range/v3/algorithm/find_end.hpp>
-#include <range/v3/algorithm/find_first_of.hpp>
-#include <range/v3/algorithm/find_if.hpp>
-#include <range/v3/algorithm/find_if_not.hpp>
-#include <range/v3/algorithm/for_each.hpp>
-#include <range/v3/algorithm/for_each_n.hpp>
-#include <range/v3/algorithm/generate.hpp>
-#include <range/v3/algorithm/generate_n.hpp>
-#include <range/v3/algorithm/heap_algorithm.hpp>
-#include <range/v3/algorithm/inplace_merge.hpp>
-#include <range/v3/algorithm/is_partitioned.hpp>
-#include <range/v3/algorithm/is_sorted.hpp>
-#include <range/v3/algorithm/is_sorted_until.hpp>
-#include <range/v3/algorithm/lexicographical_compare.hpp>
-#include <range/v3/algorithm/lower_bound.hpp>
-#include <range/v3/algorithm/max.hpp>
-#include <range/v3/algorithm/max_element.hpp>
-#include <range/v3/algorithm/merge.hpp>
-#include <range/v3/algorithm/min.hpp>
-#include <range/v3/algorithm/min_element.hpp>
-#include <range/v3/algorithm/minmax.hpp>
-#include <range/v3/algorithm/minmax_element.hpp>
-#include <range/v3/algorithm/mismatch.hpp>
-#include <range/v3/algorithm/move.hpp>
-#include <range/v3/algorithm/move_backward.hpp>
-#include <range/v3/algorithm/none_of.hpp>
-#include <range/v3/algorithm/nth_element.hpp>
-#include <range/v3/algorithm/partial_sort.hpp>
-#include <range/v3/algorithm/partial_sort_copy.hpp>
-#include <range/v3/algorithm/partition.hpp>
-#include <range/v3/algorithm/partition_copy.hpp>
-#include <range/v3/algorithm/partition_point.hpp>
-#include <range/v3/algorithm/permutation.hpp>
-#include <range/v3/algorithm/remove.hpp>
-#include <range/v3/algorithm/remove_copy.hpp>
-#include <range/v3/algorithm/remove_copy_if.hpp>
-#include <range/v3/algorithm/remove_if.hpp>
-#include <range/v3/algorithm/replace.hpp>
-#include <range/v3/algorithm/replace_copy.hpp>
-#include <range/v3/algorithm/replace_copy_if.hpp>
-#include <range/v3/algorithm/replace_if.hpp>
-#include <range/v3/algorithm/reverse.hpp>
-#include <range/v3/algorithm/reverse_copy.hpp>
-#include <range/v3/algorithm/rotate.hpp>
-#include <range/v3/algorithm/rotate_copy.hpp>
-#include <range/v3/algorithm/sample.hpp>
-#include <range/v3/algorithm/search.hpp>
-#include <range/v3/algorithm/search_n.hpp>
-#include <range/v3/algorithm/set_algorithm.hpp>
-#include <range/v3/algorithm/shuffle.hpp>
-#include <range/v3/algorithm/sort.hpp>
-#include <range/v3/algorithm/stable_partition.hpp>
-#include <range/v3/algorithm/stable_sort.hpp>
-#include <range/v3/algorithm/starts_with.hpp>
-#include <range/v3/algorithm/swap_ranges.hpp>
-#include <range/v3/algorithm/transform.hpp>
-#include <range/v3/algorithm/unique.hpp>
-#include <range/v3/algorithm/unique_copy.hpp>
-#include <range/v3/algorithm/unstable_remove_if.hpp>
-#include <range/v3/algorithm/upper_bound.hpp>
-
-// BUGBUG
-#include <range/v3/algorithm/aux_/equal_range_n.hpp>
-#include <range/v3/algorithm/aux_/lower_bound_n.hpp>
-#include <range/v3/algorithm/aux_/merge_n.hpp>
-#include <range/v3/algorithm/aux_/merge_n_with_buffer.hpp>
-#include <range/v3/algorithm/aux_/sort_n_with_buffer.hpp>
-#include <range/v3/algorithm/aux_/upper_bound_n.hpp>
-
-RANGES_RE_ENABLE_WARNINGS
-
-#endif

external/repo/range-v3/include/range/v3/algorithm/adjacent_find.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2014-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-#ifndef RANGES_V3_ALGORITHM_ADJACENT_FIND_HPP
-#define RANGES_V3_ALGORITHM_ADJACENT_FIND_HPP
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/functional/comparisons.hpp>
-#include <range/v3/functional/identity.hpp>
-#include <range/v3/functional/invoke.hpp>
-#include <range/v3/iterator/traits.hpp>
-#include <range/v3/range/access.hpp>
-#include <range/v3/range/concepts.hpp>
-#include <range/v3/range/dangling.hpp>
-#include <range/v3/range/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    /// \addtogroup group-algorithms
-    /// @{
-    RANGES_BEGIN_NIEBLOID(adjacent_find)
-        /// \brief function template \c adjacent_find
-        ///
-        /// range-based version of the \c adjacent_find std algorithm
-        ///
-        /// \pre `Rng` is a model of the `Range` concept
-        /// \pre `C` is a model of the `BinaryPredicate` concept
-        template<typename I, typename S, typename C = equal_to, typename P = identity>
-        auto RANGES_FUN_NIEBLOID(adjacent_find)(
-            I first, S last, C pred = C{}, P proj = P{}) //
-            ->CPP_ret(I)(                                //
-                requires forward_iterator<I> && sentinel_for<S, I> &&
-                indirect_relation<C, projected<I, P>>)
-        {
-            if(first == last)
-                return first;
-            auto inext = first;
-            for(; ++inext != last; first = inext)
-                if(invoke(pred, invoke(proj, *first), invoke(proj, *inext)))
-                    return first;
-            return inext;
-        }
-
-        /// \overload
-        template<typename Rng, typename C = equal_to, typename P = identity>
-        auto RANGES_FUN_NIEBLOID(adjacent_find)(Rng && rng, C pred = C{}, P proj = P{}) //
-            ->CPP_ret(safe_iterator_t<Rng>)(                                            //
-                requires forward_range<Rng> &&
-                indirect_relation<C, projected<iterator_t<Rng>, P>>)
-        {
-            return (*this)(begin(rng), end(rng), std::move(pred), std::move(proj));
-        }
-    RANGES_END_NIEBLOID(adjacent_find)
-
-    namespace cpp20
-    {
-        using ranges::adjacent_find;
-    }
-    /// @}
-} // namespace ranges
-
-#endif // RANGE_ALGORITHM_ADJACENT_FIND_HPP

external/repo/range-v3/include/range/v3/algorithm/adjacent_remove_if.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler
-//  Copyright Christopher Di Bella
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-#ifndef RANGES_V3_ALGORITHM_ADJACENT_REMOVE_IF_HPP
-#define RANGES_V3_ALGORITHM_ADJACENT_REMOVE_IF_HPP
-
-#include <functional>
-#include <utility>
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/algorithm/adjacent_find.hpp>
-#include <range/v3/algorithm/move.hpp>
-#include <range/v3/functional/identity.hpp>
-#include <range/v3/functional/invoke.hpp>
-#include <range/v3/iterator/concepts.hpp>
-#include <range/v3/iterator/traits.hpp>
-#include <range/v3/range/access.hpp>
-#include <range/v3/range/concepts.hpp>
-#include <range/v3/range/traits.hpp>
-#include <range/v3/utility/move.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    /// \addtogroup group-algorithms
-    /// @{
-    RANGES_BEGIN_NIEBLOID(adjacent_remove_if)
-        /// \brief function \c adjacent_remove_if
-        ///
-        /// range-based version of the \c adjacent_remove_if algorithm
-        ///
-        /// \pre `Rng` is a model of the `forward_range` concept.
-        /// \pre `Pred` is a model of the `BinaryPredicate` concept.
-        template<typename I, typename S, typename Pred, typename Proj = identity>
-        auto RANGES_FUN_NIEBLOID(adjacent_remove_if)(
-            I first, S last, Pred pred = {}, Proj proj = {})
-            ->CPP_ret(I)( //
-                requires permutable<I> && sentinel_for<S, I> &&
-                indirect_relation<Pred, projected<I, Proj>>)
-        {
-            first = adjacent_find(std::move(first), last, std::ref(pred), std::ref(proj));
-            if(first == last)
-                return first;
-
-            auto i = first;
-            for(auto j = ++i; ++j != last; ++i)
-            {
-                if(!invoke(pred, invoke(proj, *i), invoke(proj, *j)))
-                {
-                    *first = iter_move(i);
-                    ++first;
-                }
-            }
-
-            *first = iter_move(i);
-            ++first;
-            return first;
-        }
-
-        /// \overload
-        template<typename Rng, typename Pred, typename Proj = identity>
-        auto RANGES_FUN_NIEBLOID(adjacent_remove_if)(
-            Rng && rng, Pred pred, Proj proj = {}) //
-            ->CPP_ret(safe_iterator_t<Rng>)(       //
-                requires forward_range<Rng> &&
-                indirect_relation<Pred, projected<iterator_t<Rng>, Proj>> &&
-                permutable<iterator_t<Rng>>)
-        {
-            return (*this)(begin(rng), end(rng), std::move(pred), std::move(proj));
-        }
-    RANGES_END_NIEBLOID(adjacent_remove_if)
-
-    namespace cpp20
-    {
-        using ranges::adjacent_remove_if;
-    }
-    /// @}
-} // namespace ranges
-
-#endif // RANGES_V3_ALGORITHM_ADJACENT_REMOVE_IF_HPP

external/repo/range-v3/include/range/v3/algorithm/all_of.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Andrew Sutton 2014
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-#ifndef RANGES_V3_ALGORITHM_ALL_OF_HPP
-#define RANGES_V3_ALGORITHM_ALL_OF_HPP
-
-#include <utility>
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/functional/identity.hpp>
-#include <range/v3/functional/invoke.hpp>
-#include <range/v3/iterator/concepts.hpp>
-#include <range/v3/iterator/traits.hpp>
-#include <range/v3/range/access.hpp>
-#include <range/v3/range/concepts.hpp>
-#include <range/v3/range/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    /// \addtogroup group-algorithms
-    /// @{
-    RANGES_BEGIN_NIEBLOID(all_of)
-
-        /// \brief function template \c all_of
-        template<typename I, typename S, typename F, typename P = identity>
-        auto RANGES_FUN_NIEBLOID(all_of)(I first, S last, F pred, P proj = P{}) //
-            ->CPP_ret(bool)(                                                    //
-                requires input_iterator<I> && sentinel_for<S, I> &&
-                indirect_unary_predicate<F, projected<I, P>>)
-        {
-            for(; first != last; ++first)
-                if(!invoke(pred, invoke(proj, *first)))
-                    break;
-            return first == last;
-        }
-
-        /// \overload
-        template<typename Rng, typename F, typename P = identity>
-        auto RANGES_FUN_NIEBLOID(all_of)(Rng && rng, F pred, P proj = P{}) //
-            ->CPP_ret(bool)(                                               //
-                requires input_range<Rng> &&
-                indirect_unary_predicate<F, projected<iterator_t<Rng>, P>>)
-        {
-            return (*this)(begin(rng), end(rng), std::move(pred), std::move(proj));
-        }
-
-    RANGES_END_NIEBLOID(all_of)
-
-    namespace cpp20
-    {
-        using ranges::all_of;
-    }
-    /// @}
-} // namespace ranges
-
-#endif // include guard

external/repo/range-v3/include/range/v3/algorithm/any_of.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Andrew Sutton 2014
-//  Copyright Gonzalo Brito Gadeschi 2014
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-#ifndef RANGES_V3_ALGORITHM_ANY_OF_HPP
-#define RANGES_V3_ALGORITHM_ANY_OF_HPP
-
-#include <utility>
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/functional/identity.hpp>
-#include <range/v3/functional/invoke.hpp>
-#include <range/v3/iterator/concepts.hpp>
-#include <range/v3/iterator/traits.hpp>
-#include <range/v3/range/access.hpp>
-#include <range/v3/range/concepts.hpp>
-#include <range/v3/range/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    /// \addtogroup group-algorithms
-    /// @{
-    RANGES_BEGIN_NIEBLOID(any_of)
-
-        /// \brief function template \c any_of
-        template<typename I, typename S, typename F, typename P = identity>
-        auto RANGES_FUN_NIEBLOID(any_of)(I first, S last, F pred, P proj = P{}) //
-            ->CPP_ret(bool)(                                                    //
-                requires input_iterator<I> && sentinel_for<S, I> &&
-                indirect_unary_predicate<F, projected<I, P>>)
-        {
-            for(; first != last; ++first)
-                if(invoke(pred, invoke(proj, *first)))
-                    return true;
-            return false;
-        }
-
-        /// \overload
-        template<typename Rng, typename F, typename P = identity>
-        auto RANGES_FUN_NIEBLOID(any_of)(Rng && rng, F pred, P proj = P{}) //
-            ->CPP_ret(bool)(                                               //
-                requires input_range<Rng> &&
-                indirect_unary_predicate<F, projected<iterator_t<Rng>, P>>)
-        {
-            return (*this)(begin(rng), end(rng), std::move(pred), std::move(proj));
-        }
-
-    RANGES_END_NIEBLOID(any_of)
-
-    namespace cpp20
-    {
-        using ranges::any_of;
-    }
-    /// @}
-} // namespace ranges
-
-#endif // include guard

external/repo/range-v3/include/range/v3/algorithm/aux_/equal_range_n.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2014-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-#ifndef RANGES_V3_ALGORITHM_AUX_EQUAL_RANGE_N_HPP
-#define RANGES_V3_ALGORITHM_AUX_EQUAL_RANGE_N_HPP
-
-#include <functional>
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/algorithm/aux_/lower_bound_n.hpp>
-#include <range/v3/algorithm/aux_/upper_bound_n.hpp>
-#include <range/v3/functional/comparisons.hpp>
-#include <range/v3/functional/identity.hpp>
-#include <range/v3/functional/invoke.hpp>
-#include <range/v3/iterator/operations.hpp>
-#include <range/v3/range/access.hpp>
-#include <range/v3/range/concepts.hpp>
-#include <range/v3/range/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-#include <range/v3/view/subrange.hpp>
-
-namespace ranges
-{
-    namespace aux
-    {
-        struct equal_range_n_fn
-        {
-            template<typename I, typename V, typename R = less, typename P = identity>
-            auto operator()(I first, iter_difference_t<I> dist, V const & val,
-                            R pred = R{}, P proj = P{}) const -> CPP_ret(subrange<I>)( //
-                requires forward_iterator<I> &&
-                    indirect_strict_weak_order<R, V const *, projected<I, P>>)
-            {
-                if(0 < dist)
-                {
-                    do
-                    {
-                        auto half = dist / 2;
-                        auto middle = ranges::next(first, half);
-                        auto && v = *middle;
-                        auto && pv = invoke(proj, (decltype(v) &&)v);
-                        if(invoke(pred, pv, val))
-                        {
-                            first = std::move(++middle);
-                            dist -= half + 1;
-                        }
-                        else if(invoke(pred, val, pv))
-                        {
-                            dist = half;
-                        }
-                        else
-                        {
-                            return {lower_bound_n(std::move(first),
-                                                  half,
-                                                  val,
-                                                  std::ref(pred),
-                                                  std::ref(proj)),
-                                    upper_bound_n(ranges::next(middle),
-                                                  dist - (half + 1),
-                                                  val,
-                                                  std::ref(pred),
-                                                  std::ref(proj))};
-                        }
-                    } while(0 != dist);
-                }
-                return {first, first};
-            }
-        };
-
-        RANGES_INLINE_VARIABLE(equal_range_n_fn, equal_range_n)
-    } // namespace aux
-} // namespace ranges
-
-#endif // include guard

external/repo/range-v3/include/range/v3/algorithm/aux_/lower_bound_n.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2014-present
-//  Copyright Casey Carter 2016
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-#ifndef RANGES_V3_ALGORITHM_AUX_LOWER_BOUND_N_HPP
-#define RANGES_V3_ALGORITHM_AUX_LOWER_BOUND_N_HPP
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/algorithm/aux_/partition_point_n.hpp>
-#include <range/v3/functional/comparisons.hpp>
-#include <range/v3/functional/identity.hpp>
-#include <range/v3/functional/invoke.hpp>
-#include <range/v3/iterator/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    /// \cond
-    namespace detail
-    {
-        // [&](auto&& i){ return invoke(pred, i, val); }
-        template<typename Pred, typename Val>
-        struct lower_bound_predicate
-        {
-            Pred & pred_;
-            Val & val_;
-
-            template<typename T>
-            bool operator()(T && t) const
-            {
-                return invoke(pred_, static_cast<T &&>(t), val_);
-            }
-        };
-
-        template<typename Pred, typename Val>
-        lower_bound_predicate<Pred, Val> make_lower_bound_predicate(Pred & pred,
-                                                                    Val & val)
-        {
-            return {pred, val};
-        }
-    } // namespace detail
-    /// \endcond
-
-    namespace aux
-    {
-        struct lower_bound_n_fn
-        {
-            template<typename I, typename V, typename C = less, typename P = identity>
-            auto operator()(I first, iter_difference_t<I> d, V const & val, C pred = C{},
-                            P proj = P{}) const -> CPP_ret(I)( //
-                requires forward_iterator<I> &&
-                    indirect_strict_weak_order<C, V const *, projected<I, P>>)
-            {
-                return partition_point_n(std::move(first),
-                                         d,
-                                         detail::make_lower_bound_predicate(pred, val),
-                                         std::move(proj));
-            }
-        };
-
-        RANGES_INLINE_VARIABLE(lower_bound_n_fn, lower_bound_n)
-    } // namespace aux
-} // namespace ranges
-
-#endif // include guard

external/repo/range-v3/include/range/v3/algorithm/aux_/merge_n.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2014-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-// Copyright (c) 2009 Alexander Stepanov and Paul McJones
-//
-// Permission to use, copy, modify, distribute and sell this software
-// and its documentation for any purpose is hereby granted without
-// fee, provided that the above copyright notice appear in all copies
-// and that both that copyright notice and this permission notice
-// appear in supporting documentation. The authors make no
-// representations about the suitability of this software for any
-// purpose. It is provided "as is" without express or implied
-// warranty.
-//
-// Algorithms from
-// Elements of Programming
-// by Alexander Stepanov and Paul McJones
-// Addison-Wesley Professional, 2009
-#ifndef RANGES_V3_ALGORITHM_AUX_MERGE_N_HPP
-#define RANGES_V3_ALGORITHM_AUX_MERGE_N_HPP
-
-#include <tuple>
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/algorithm/copy_n.hpp>
-#include <range/v3/algorithm/result_types.hpp>
-#include <range/v3/functional/comparisons.hpp>
-#include <range/v3/functional/identity.hpp>
-#include <range/v3/functional/invoke.hpp>
-#include <range/v3/iterator/operations.hpp>
-#include <range/v3/iterator/traits.hpp>
-#include <range/v3/range/access.hpp>
-#include <range/v3/range/concepts.hpp>
-#include <range/v3/range/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    namespace aux
-    {
-        template<typename I0, typename I1, typename O>
-        using merge_n_result = detail::in1_in2_out_result<I0, I1, O>;
-
-        struct merge_n_fn
-        {
-            template<typename I0, typename I1, typename O, typename C = less,
-                     typename P0 = identity, typename P1 = identity>
-            auto operator()(I0 begin0, iter_difference_t<I0> n0, I1 begin1,
-                            iter_difference_t<I1> n1, O out, C r = C{}, P0 p0 = P0{},
-                            P1 p1 = P1{}) const -> CPP_ret(merge_n_result<I0, I1, O>)( //
-                requires mergeable<I0, I1, O, C, P0, P1>)
-            {
-                using T = merge_n_result<I0, I1, O>;
-                auto n0orig = n0;
-                auto n1orig = n1;
-                auto b0 = uncounted(begin0);
-                auto b1 = uncounted(begin1);
-                while(true)
-                {
-                    if(0 == n0)
-                    {
-                        auto res = copy_n(b1, n1, out);
-                        begin0 = recounted(begin0, b0, n0orig);
-                        begin1 = recounted(begin1, res.in, n1orig);
-                        return T{begin0, begin1, res.out};
-                    }
-                    if(0 == n1)
-                    {
-                        auto res = copy_n(b0, n0, out);
-                        begin0 = recounted(begin0, res.in, n0orig);
-                        begin1 = recounted(begin1, b1, n1orig);
-                        return T{begin0, begin1, res.out};
-                    }
-                    if(invoke(r, invoke(p1, *b1), invoke(p0, *b0)))
-                    {
-                        *out = *b1;
-                        ++b1;
-                        ++out;
-                        --n1;
-                    }
-                    else
-                    {
-                        *out = *b0;
-                        ++b0;
-                        ++out;
-                        --n0;
-                    }
-                }
-            }
-        };
-
-        RANGES_INLINE_VARIABLE(merge_n_fn, merge_n)
-    } // namespace aux
-} // namespace ranges
-
-#endif // include guard

external/repo/range-v3/include/range/v3/algorithm/aux_/merge_n_with_buffer.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2014-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-// Copyright (c) 2009 Alexander Stepanov and Paul McJones
-//
-// Permission to use, copy, modify, distribute and sell this software
-// and its documentation for any purpose is hereby granted without
-// fee, provided that the above copyright notice appear in all copies
-// and that both that copyright notice and this permission notice
-// appear in supporting documentation. The authors make no
-// representations about the suitability of this software for any
-// purpose. It is provided "as is" without express or implied
-// warranty.
-//
-// Algorithms from
-// Elements of Programming
-// by Alexander Stepanov and Paul McJones
-// Addison-Wesley Professional, 2009
-#ifndef RANGES_V3_ALGORITHM_AUX_MERGE_N_WITH_BUFFER_HPP
-#define RANGES_V3_ALGORITHM_AUX_MERGE_N_WITH_BUFFER_HPP
-
-#include <tuple>
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/algorithm/aux_/merge_n.hpp>
-#include <range/v3/algorithm/copy_n.hpp>
-#include <range/v3/functional/comparisons.hpp>
-#include <range/v3/functional/identity.hpp>
-#include <range/v3/iterator/concepts.hpp>
-#include <range/v3/iterator/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    namespace aux
-    {
-        struct merge_n_with_buffer_fn
-        {
-            template<typename I, typename B, typename C = less, typename P = identity>
-            auto operator()(I begin0, iter_difference_t<I> n0, I begin1,
-                            iter_difference_t<I> n1, B buff, C r = C{}, P p = P{}) const
-                -> CPP_ret(I)( //
-                    requires same_as<iter_common_reference_t<I>,
-                                     iter_common_reference_t<B>> &&
-                        indirectly_copyable<I, B> && mergeable<B, I, I, C, P, P>)
-            {
-                copy_n(begin0, n0, buff);
-                return merge_n(buff, n0, begin1, n1, begin0, r, p, p).out;
-            }
-        };
-
-        RANGES_INLINE_VARIABLE(merge_n_with_buffer_fn, merge_n_with_buffer)
-    } // namespace aux
-} // namespace ranges
-
-#endif // include guard

external/repo/range-v3/include/range/v3/algorithm/aux_/partition_point_n.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2014-present
-//  Copyright Casey Carter 2016
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-#ifndef RANGES_V3_ALGORITHM_AUX_PARTITION_POINT_N_HPP
-#define RANGES_V3_ALGORITHM_AUX_PARTITION_POINT_N_HPP
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/functional/identity.hpp>
-#include <range/v3/functional/invoke.hpp>
-#include <range/v3/iterator/operations.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    namespace aux
-    {
-        struct partition_point_n_fn
-        {
-            template<typename I, typename C, typename P = identity>
-            auto operator()(I first, iter_difference_t<I> d, C pred,
-                            P proj = P{}) const //
-                -> CPP_ret(I)(                  //
-                    requires forward_iterator<I> &&
-                        indirect_unary_predicate<C, projected<I, P>>)
-            {
-                if(0 < d)
-                {
-                    do
-                    {
-                        auto half = d / 2;
-                        auto middle = next(uncounted(first), half);
-                        if(invoke(pred, invoke(proj, *middle)))
-                        {
-                            first = recounted(first, std::move(++middle), half + 1);
-                            d -= half + 1;
-                        }
-                        else
-                            d = half;
-                    } while(0 != d);
-                }
-                return first;
-            }
-        };
-
-        RANGES_INLINE_VARIABLE(partition_point_n_fn, partition_point_n)
-    } // namespace aux
-} // namespace ranges
-
-#endif // include guard

external/repo/range-v3/include/range/v3/algorithm/aux_/sort_n_with_buffer.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2014-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-// Copyright (c) 2009 Alexander Stepanov and Paul McJones
-//
-// Permission to use, copy, modify, distribute and sell this software
-// and its documentation for any purpose is hereby granted without
-// fee, provided that the above copyright notice appear in all copies
-// and that both that copyright notice and this permission notice
-// appear in supporting documentation. The authors make no
-// representations about the suitability of this software for any
-// purpose. It is provided "as is" without express or implied
-// warranty.
-//
-// Algorithms from
-// Elements of Programming
-// by Alexander Stepanov and Paul McJones
-// Addison-Wesley Professional, 2009
-#ifndef RANGES_V3_ALGORITHM_AUX_SORT_N_WITH_BUFFER_HPP
-#define RANGES_V3_ALGORITHM_AUX_SORT_N_WITH_BUFFER_HPP
-
-#include <tuple>
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/algorithm/aux_/merge_n_with_buffer.hpp>
-#include <range/v3/functional/comparisons.hpp>
-#include <range/v3/functional/identity.hpp>
-#include <range/v3/iterator/concepts.hpp>
-#include <range/v3/iterator/operations.hpp>
-#include <range/v3/iterator/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    namespace aux
-    {
-        struct sort_n_with_buffer_fn
-        {
-            template<typename I, typename B, typename C = less, typename P = identity>
-            auto operator()(I first, iter_difference_t<I> n, B buff, C r = C{},
-                            P p = P{}) const -> CPP_ret(I)( //
-                requires same_as<iter_common_reference_t<I>,
-                                 iter_common_reference_t<B>> &&
-                    indirectly_copyable<I, B> && mergeable<B, I, I, C, P, P>)
-            {
-                auto half = n / 2;
-                if(0 == half)
-                    return next(first, n);
-                I m = (*this)(first, half, buff, r, p);
-                (*this)(m, n - half, buff, r, p);
-                return merge_n_with_buffer(first, half, m, n - half, buff, r, p);
-            }
-        };
-
-        RANGES_INLINE_VARIABLE(sort_n_with_buffer_fn, sort_n_with_buffer)
-    } // namespace aux
-} // namespace ranges
-
-#endif // include guard

external/repo/range-v3/include/range/v3/algorithm/aux_/upper_bound_n.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2014-present
-//  Copyright Casey Carter 2016
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-#ifndef RANGES_V3_ALGORITHM_AUX_UPPER_BOUND_N_HPP
-#define RANGES_V3_ALGORITHM_AUX_UPPER_BOUND_N_HPP
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/algorithm/aux_/partition_point_n.hpp>
-#include <range/v3/functional/comparisons.hpp>
-#include <range/v3/functional/identity.hpp>
-#include <range/v3/functional/invoke.hpp>
-#include <range/v3/iterator/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    /// \cond
-    namespace detail
-    {
-        // [&](auto&& i){ return !invoke(pred, val, i); }
-        template<typename Pred, typename Val>
-        struct upper_bound_predicate
-        {
-            Pred * pred_;
-            Val * val_;
-
-            template<typename T>
-            bool operator()(T && t) const
-            {
-                return !invoke(*pred_, *val_, static_cast<T &&>(t));
-            }
-        };
-
-        template<typename Pred, typename Val>
-        upper_bound_predicate<Pred, Val> make_upper_bound_predicate(Pred & pred,
-                                                                    Val & val)
-        {
-            return {&pred, &val};
-        }
-    } // namespace detail
-    /// \endcond
-
-    namespace aux
-    {
-        struct upper_bound_n_fn
-        {
-            /// \brief template function upper_bound
-            ///
-            /// range-based version of the `upper_bound` std algorithm
-            ///
-            /// \pre `Rng` is a model of the `Range` concept
-            template<typename I, typename V, typename C = less, typename P = identity>
-            auto operator()(I first, iter_difference_t<I> d, V const & val, C pred = C{},
-                            P proj = P{}) const -> CPP_ret(I)( //
-                requires forward_iterator<I> &&
-                    indirect_strict_weak_order<C, V const *, projected<I, P>>)
-            {
-                return partition_point_n(std::move(first),
-                                         d,
-                                         detail::make_upper_bound_predicate(pred, val),
-                                         std::move(proj));
-            }
-        };
-
-        RANGES_INLINE_VARIABLE(upper_bound_n_fn, upper_bound_n)
-    } // namespace aux
-} // namespace ranges
-
-#endif // include guard

external/repo/range-v3/include/range/v3/algorithm/binary_search.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2013-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-#ifndef RANGES_V3_ALGORITHM_BINARY_SEARCH_HPP
-#define RANGES_V3_ALGORITHM_BINARY_SEARCH_HPP
-
-#include <functional>
-#include <utility>
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/algorithm/lower_bound.hpp>
-#include <range/v3/functional/comparisons.hpp>
-#include <range/v3/functional/identity.hpp>
-#include <range/v3/functional/invoke.hpp>
-#include <range/v3/iterator/concepts.hpp>
-#include <range/v3/iterator/traits.hpp>
-#include <range/v3/range/access.hpp>
-#include <range/v3/range/concepts.hpp>
-#include <range/v3/range/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    /// \addtogroup group-algorithms
-    /// @{
-    RANGES_BEGIN_NIEBLOID(binary_search)
-        /// \brief function template \c binary_search
-        ///
-        /// range-based version of the \c binary_search std algorithm
-        ///
-        /// \pre `Rng` is a model of the `Range` concept
-        template<typename I,
-                 typename S,
-                 typename V,
-                 typename C = less,
-                 typename P = identity>
-        auto RANGES_FUN_NIEBLOID(binary_search)(
-            I first, S last, V const & val, C pred = C{}, P proj = P{})
-            ->CPP_ret(bool)( //
-                requires forward_iterator<I> && sentinel_for<S, I> &&
-                indirect_strict_weak_order<C, V const *, projected<I, P>>)
-        {
-            first =
-                lower_bound(std::move(first), last, val, std::ref(pred), std::ref(proj));
-            return first != last && !invoke(pred, val, invoke(proj, *first));
-        }
-
-        /// \overload
-        template<typename Rng, typename V, typename C = less, typename P = identity>
-        auto RANGES_FUN_NIEBLOID(binary_search)(
-            Rng && rng, V const & val, C pred = C{}, P proj = P{}) //
-            ->CPP_ret(bool)(                                       //
-                requires forward_range<Rng> &&
-                indirect_strict_weak_order<C, V const *, projected<iterator_t<Rng>, P>>)
-        {
-            static_assert(!is_infinite<Rng>::value,
-                          "Trying to binary search an infinite range");
-            return (*this)(begin(rng), end(rng), val, std::move(pred), std::move(proj));
-        }
-    RANGES_END_NIEBLOID(binary_search)
-
-    namespace cpp20
-    {
-        using ranges::binary_search;
-    }
-    /// @}
-} // namespace ranges
-
-#endif // include guard

external/repo/range-v3/include/range/v3/algorithm/copy.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2013-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-#ifndef RANGES_V3_ALGORITHM_COPY_HPP
-#define RANGES_V3_ALGORITHM_COPY_HPP
-
-#include <functional>
-#include <utility>
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/algorithm/result_types.hpp>
-#include <range/v3/iterator/concepts.hpp>
-#include <range/v3/iterator/traits.hpp>
-#include <range/v3/range/access.hpp>
-#include <range/v3/range/concepts.hpp>
-#include <range/v3/range/dangling.hpp>
-#include <range/v3/range/traits.hpp>
-#include <range/v3/utility/copy.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    /// \addtogroup group-algorithms
-    /// @{
-    template<typename I, typename O>
-    using copy_result = detail::in_out_result<I, O>;
-
-    RANGES_HIDDEN_DETAIL(namespace _copy CPP_PP_LBRACE())
-    RANGES_BEGIN_NIEBLOID(copy)
-
-        /// \brief function template \c copy
-        template<typename I, typename S, typename O>
-        constexpr auto RANGES_FUN_NIEBLOID(copy)(I first, S last, O out) //
-            ->CPP_ret(copy_result<I, O>)(                                //
-                requires input_iterator<I> && sentinel_for<S, I> &&
-                weakly_incrementable<O> && indirectly_copyable<I, O>)
-        {
-            for(; first != last; ++first, ++out)
-                *out = *first;
-            return {first, out};
-        } // namespace ranges
-
-        /// \overload
-        template<typename Rng, typename O>
-        constexpr auto RANGES_FUN_NIEBLOID(copy)(Rng && rng, O out) //
-            ->CPP_ret(copy_result<safe_iterator_t<Rng>, O>)(        //
-                requires input_range<Rng> && weakly_incrementable<O> &&
-                indirectly_copyable<iterator_t<Rng>, O>)
-        {
-            return (*this)(begin(rng), end(rng), std::move(out));
-        }
-
-    RANGES_END_NIEBLOID(copy)
-    RANGES_HIDDEN_DETAIL(CPP_PP_RBRACE())
-
-#ifndef RANGES_DOXYGEN_INVOKED
-    struct copy_fn
-      : aux::copy_fn
-      , _copy::copy_fn
-    {
-        using aux::copy_fn::operator();
-        using _copy::copy_fn::operator();
-    };
-    RANGES_INLINE_VARIABLE(copy_fn, copy)
-#endif
-
-    namespace cpp20
-    {
-        using ranges::copy_result;
-        using ranges::RANGES_HIDDEN_DETAIL(_copy::) copy;
-    } // namespace cpp20
-
-    /// @}
-} // namespace ranges
-
-#endif // include guard

external/repo/range-v3/include/range/v3/algorithm/copy_backward.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2013-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-#ifndef RANGES_V3_ALGORITHM_COPY_BACKWARD_HPP
-#define RANGES_V3_ALGORITHM_COPY_BACKWARD_HPP
-
-#include <utility>
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/algorithm/result_types.hpp>
-#include <range/v3/iterator/concepts.hpp>
-#include <range/v3/iterator/operations.hpp>
-#include <range/v3/iterator/traits.hpp>
-#include <range/v3/range/access.hpp>
-#include <range/v3/range/concepts.hpp>
-#include <range/v3/range/dangling.hpp>
-#include <range/v3/range/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    /// \addtogroup group-algorithms
-    /// @{
-    template<typename I, typename O>
-    using copy_backward_result = detail::in_out_result<I, O>;
-
-    RANGES_BEGIN_NIEBLOID(copy_backward)
-
-        /// \brief function template \c copy_backward
-        template<typename I, typename S, typename O>
-        auto RANGES_FUN_NIEBLOID(copy_backward)(I first, S end_, O out)
-            ->CPP_ret(copy_backward_result<I, O>)( //
-                requires bidirectional_iterator<I> && sentinel_for<S, I> &&
-                bidirectional_iterator<O> && indirectly_copyable<I, O>)
-        {
-            I i = ranges::next(first, end_), last = i;
-            while(first != i)
-                *--out = *--i;
-            return {last, out};
-        }
-
-        /// \overload
-        template<typename Rng, typename O>
-        auto RANGES_FUN_NIEBLOID(copy_backward)(Rng && rng, O out)
-            ->CPP_ret(copy_backward_result<safe_iterator_t<Rng>, O>)( //
-                requires bidirectional_range<Rng> && bidirectional_iterator<O> &&
-                indirectly_copyable<iterator_t<Rng>, O>)
-        {
-            return (*this)(begin(rng), end(rng), std::move(out));
-        }
-    RANGES_END_NIEBLOID(copy_backward)
-
-    namespace cpp20
-    {
-        using ranges::copy_backward;
-        using ranges::copy_backward_result;
-    } // namespace cpp20
-    /// @}
-} // namespace ranges
-
-#endif // include guard

external/repo/range-v3/include/range/v3/algorithm/copy_if.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2014-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-#ifndef RANGES_V3_ALGORITHM_COPY_IF_HPP
-#define RANGES_V3_ALGORITHM_COPY_IF_HPP
-
-#include <functional>
-#include <utility>
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/algorithm/result_types.hpp>
-#include <range/v3/functional/identity.hpp>
-#include <range/v3/functional/invoke.hpp>
-#include <range/v3/iterator/concepts.hpp>
-#include <range/v3/iterator/traits.hpp>
-#include <range/v3/range/access.hpp>
-#include <range/v3/range/concepts.hpp>
-#include <range/v3/range/dangling.hpp>
-#include <range/v3/range/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    /// \addtogroup group-algorithms
-    /// @{
-    template<typename I, typename O>
-    using copy_if_result = detail::in_out_result<I, O>;
-
-    RANGES_BEGIN_NIEBLOID(copy_if)
-
-        /// \brief function template \c copy_if
-        template<typename I, typename S, typename O, typename F, typename P = identity>
-        auto RANGES_FUN_NIEBLOID(copy_if)(I first, S last, O out, F pred, P proj = P{}) //
-            ->CPP_ret(copy_if_result<I, O>)(                                            //
-                requires input_iterator<I> && sentinel_for<S, I> &&
-                weakly_incrementable<O> && indirect_unary_predicate<F, projected<I, P>> &&
-                indirectly_copyable<I, O>)
-        {
-            for(; first != last; ++first)
-            {
-                auto && x = *first;
-                if(invoke(pred, invoke(proj, x)))
-                {
-                    *out = (decltype(x) &&)x;
-                    ++out;
-                }
-            }
-            return {first, out};
-        }
-
-        /// \overload
-        template<typename Rng, typename O, typename F, typename P = identity>
-        auto RANGES_FUN_NIEBLOID(copy_if)(Rng && rng, O out, F pred, P proj = P{})
-            ->CPP_ret(copy_if_result<safe_iterator_t<Rng>, O>)( //
-                requires input_range<Rng> && weakly_incrementable<O> &&
-                indirect_unary_predicate<F, projected<iterator_t<Rng>, P>> &&
-                indirectly_copyable<iterator_t<Rng>, O>)
-        {
-            return (*this)(
-                begin(rng), end(rng), std::move(out), std::move(pred), std::move(proj));
-        }
-
-    RANGES_END_NIEBLOID(copy_if)
-
-    namespace cpp20
-    {
-        using ranges::copy_if;
-        using ranges::copy_if_result;
-    } // namespace cpp20
-    /// @}
-} // namespace ranges
-
-#endif // include guard

external/repo/range-v3/include/range/v3/algorithm/copy_n.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2014-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-#ifndef RANGES_V3_ALGORITHM_COPY_N_HPP
-#define RANGES_V3_ALGORITHM_COPY_N_HPP
-
-#include <functional>
-#include <tuple>
-#include <utility>
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/algorithm/result_types.hpp>
-#include <range/v3/functional/identity.hpp>
-#include <range/v3/iterator/concepts.hpp>
-#include <range/v3/iterator/operations.hpp>
-#include <range/v3/iterator/traits.hpp>
-#include <range/v3/range/access.hpp>
-#include <range/v3/range/concepts.hpp>
-#include <range/v3/range/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    /// \addtogroup group-algorithms
-    /// @{
-    template<typename I, typename O>
-    using copy_n_result = detail::in_out_result<I, O>;
-
-    RANGES_BEGIN_NIEBLOID(copy_n)
-
-        /// \brief function template \c copy_n
-        template<typename I, typename O, typename P = identity>
-        auto RANGES_FUN_NIEBLOID(copy_n)(I first, iter_difference_t<I> n, O out)
-            ->CPP_ret(copy_n_result<I, O>)( //
-                requires input_iterator<I> && weakly_incrementable<O> &&
-                indirectly_copyable<I, O>)
-        {
-            RANGES_EXPECT(0 <= n);
-            auto norig = n;
-            auto b = uncounted(first);
-            for(; n != 0; ++b, ++out, --n)
-                *out = *b;
-            return {recounted(first, b, norig), out};
-        }
-
-    RANGES_END_NIEBLOID(copy_n)
-
-    namespace cpp20
-    {
-        using ranges::copy_n;
-        using ranges::copy_n_result;
-    } // namespace cpp20
-    /// @}
-} // namespace ranges
-
-#endif // include guard

external/repo/range-v3/include/range/v3/algorithm/count.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2014-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-#ifndef RANGES_V3_ALGORITHM_COUNT_HPP
-#define RANGES_V3_ALGORITHM_COUNT_HPP
-
-#include <utility>
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/functional/identity.hpp>
-#include <range/v3/functional/invoke.hpp>
-#include <range/v3/iterator/concepts.hpp>
-#include <range/v3/iterator/traits.hpp>
-#include <range/v3/range/access.hpp>
-#include <range/v3/range/concepts.hpp>
-#include <range/v3/range/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    /// \addtogroup group-algorithms
-    /// @{
-    RANGES_BEGIN_NIEBLOID(count)
-
-        /// \brief function template \c count
-        template<typename I, typename S, typename V, typename P = identity>
-        auto RANGES_FUN_NIEBLOID(count)(I first, S last, V const & val, P proj = P{})
-            ->CPP_ret(iter_difference_t<I>)( //
-                requires input_iterator<I> && sentinel_for<S, I> &&
-                indirect_relation<equal_to, projected<I, P>, V const *>)
-        {
-            iter_difference_t<I> n = 0;
-            for(; first != last; ++first)
-                if(invoke(proj, *first) == val)
-                    ++n;
-            return n;
-        }
-
-        /// \overload
-        template<typename Rng, typename V, typename P = identity>
-        auto RANGES_FUN_NIEBLOID(count)(Rng && rng, V const & val, P proj = P{})
-            ->CPP_ret(iter_difference_t<iterator_t<Rng>>)( //
-                requires input_range<Rng> &&
-                indirect_relation<equal_to, projected<iterator_t<Rng>, P>, V const *>)
-        {
-            return (*this)(begin(rng), end(rng), val, std::move(proj));
-        }
-
-    RANGES_END_NIEBLOID(count)
-
-    namespace cpp20
-    {
-        using ranges::count;
-    }
-    /// @}
-} // namespace ranges
-
-#endif // include guard

external/repo/range-v3/include/range/v3/algorithm/count_if.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2014-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-#ifndef RANGES_V3_ALGORITHM_COUNT_IF_HPP
-#define RANGES_V3_ALGORITHM_COUNT_IF_HPP
-
-#include <utility>
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/functional/identity.hpp>
-#include <range/v3/functional/invoke.hpp>
-#include <range/v3/iterator/concepts.hpp>
-#include <range/v3/iterator/traits.hpp>
-#include <range/v3/range/access.hpp>
-#include <range/v3/range/concepts.hpp>
-#include <range/v3/range/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    /// \addtogroup group-algorithms
-    /// @{
-    RANGES_BEGIN_NIEBLOID(count_if)
-
-        /// \brief function template \c count_if
-        template<typename I, typename S, typename R, typename P = identity>
-        auto RANGES_FUN_NIEBLOID(count_if)(I first, S last, R pred, P proj = P{})
-            ->CPP_ret(iter_difference_t<I>)( //
-                requires input_iterator<I> && sentinel_for<S, I> &&
-                indirect_unary_predicate<R, projected<I, P>>)
-        {
-            iter_difference_t<I> n = 0;
-            for(; first != last; ++first)
-                if(invoke(pred, invoke(proj, *first)))
-                    ++n;
-            return n;
-        }
-
-        /// \overload
-        template<typename Rng, typename R, typename P = identity>
-        auto RANGES_FUN_NIEBLOID(count_if)(Rng && rng, R pred, P proj = P{})
-            ->CPP_ret(iter_difference_t<iterator_t<Rng>>)( //
-                requires input_range<Rng> &&
-                indirect_unary_predicate<R, projected<iterator_t<Rng>, P>>)
-        {
-            return (*this)(begin(rng), end(rng), std::move(pred), std::move(proj));
-        }
-
-    RANGES_END_NIEBLOID(count_if)
-
-    namespace cpp20
-    {
-        using ranges::count_if;
-    }
-    /// @}
-} // namespace ranges
-
-#endif // include guard

external/repo/range-v3/include/range/v3/algorithm/ends_with.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Johel Guerrero 2019
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 0.0. (See accompanying
-//  file LICENSE_0_0.txt or copy at
-//  http://www.boost.org/LICENSE_0_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-#ifndef RANGES_V3_ALGORITHM_ENDS_WITH_HPP
-#define RANGES_V3_ALGORITHM_ENDS_WITH_HPP
-
-#include <utility>
-
-#include <concepts/concepts.hpp>
-
-#include <range/v3/algorithm/equal.hpp>
-#include <range/v3/detail/config.hpp>
-#include <range/v3/functional/comparisons.hpp>
-#include <range/v3/functional/identity.hpp>
-#include <range/v3/iterator/concepts.hpp>
-#include <range/v3/iterator/operations.hpp>
-#include <range/v3/range/access.hpp>
-#include <range/v3/range/concepts.hpp>
-
-namespace ranges
-{
-    /// \addtogroup group-algorithms
-    /// @{
-    RANGES_BEGIN_NIEBLOID(ends_with)
-
-        /// \brief function template \c ends_with
-        template<typename I0,
-                 typename S0,
-                 typename I1,
-                 typename S1,
-                 typename C = equal_to,
-                 typename P0 = identity,
-                 typename P1 = identity>
-        constexpr auto RANGES_FUN_NIEBLOID(ends_with)(I0 begin0,
-                                                      S0 end0,
-                                                      I1 begin1,
-                                                      S1 end1,
-                                                      C pred = C{},
-                                                      P0 proj0 = P0{},
-                                                      P1 proj1 = P1{}) //
-            ->CPP_ret(bool)(                                           //
-                requires((forward_iterator<I0> && sentinel_for<S0, I0>) ||
-                         (input_iterator<I0> && sized_sentinel_for<S0, I0>)) &&
-                ((forward_iterator<I1> && sentinel_for<S1, I1>) ||
-                 (input_iterator<I1> && sized_sentinel_for<S1, I1>)) &&
-                indirectly_comparable<I0, I1, C, P0, P1>)
-        {
-            const auto drop = distance(begin0, end0) - distance(begin1, end1);
-            if(drop < 0)
-                return false;
-            return equal(next(std::move(begin0), drop),
-                         std::move(end0),
-                         std::move(begin1),
-                         std::move(end1),
-                         std::move(pred),
-                         std::move(proj0),
-                         std::move(proj1));
-        }
-
-        /// \overload
-        template<typename Rng0,
-                 typename Rng1,
-                 typename C = equal_to,
-                 typename P0 = identity,
-                 typename P1 = identity>
-        constexpr auto RANGES_FUN_NIEBLOID(ends_with)(
-            Rng0 && rng0, Rng1 && rng1, C pred = C{}, P0 proj0 = P0{}, P1 proj1 = P1{}) //
-            ->CPP_ret(bool)(                                                            //
-                requires(forward_range<Rng0> ||
-                         (input_range<Rng0> && sized_range<Rng0>)) &&
-                (forward_range<Rng1> || (input_range<Rng1> && sized_range<Rng1>)) &&
-                indirectly_comparable<iterator_t<Rng0>, iterator_t<Rng1>, C, P0, P1>)
-        {
-            const auto drop = distance(rng0) - distance(rng1);
-            if(drop < 0)
-                return false;
-            return equal(next(begin(rng0), drop),
-                         end(rng0),
-                         begin(rng1),
-                         end(rng1),
-                         std::move(pred),
-                         std::move(proj0),
-                         std::move(proj1));
-        }
-
-    RANGES_END_NIEBLOID(ends_with)
-    /// @}
-} // namespace ranges
-
-#endif // include guard

external/repo/range-v3/include/range/v3/algorithm/equal.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2014-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 0.0. (See accompanying
-//  file LICENSE_0_0.txt or copy at
-//  http://www.boost.org/LICENSE_0_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-#ifndef RANGES_V3_ALGORITHM_EQUAL_HPP
-#define RANGES_V3_ALGORITHM_EQUAL_HPP
-
-#include <utility>
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/functional/comparisons.hpp>
-#include <range/v3/functional/identity.hpp>
-#include <range/v3/functional/invoke.hpp>
-#include <range/v3/iterator/concepts.hpp>
-#include <range/v3/iterator/operations.hpp>
-#include <range/v3/iterator/traits.hpp>
-#include <range/v3/range/access.hpp>
-#include <range/v3/range/concepts.hpp>
-#include <range/v3/range/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    /// \addtogroup group-algorithms
-    /// @{
-
-    /// \cond
-    namespace detail
-    {
-        template<typename I0, typename S0, typename I1, typename S1, typename C,
-                 typename P0, typename P1>
-        constexpr bool equal_nocheck(I0 begin0, S0 end0, I1 begin1, S1 end1, C pred,
-                                     P0 proj0, P1 proj1)
-        {
-            for(; begin0 != end0 && begin1 != end1; ++begin0, ++begin1)
-                if(!invoke(pred, invoke(proj0, *begin0), invoke(proj1, *begin1)))
-                    return false;
-            return begin0 == end0 && begin1 == end1;
-        }
-    } // namespace detail
-    /// \endcond
-
-    RANGES_BEGIN_NIEBLOID(equal)
-
-        /// \brief function template \c equal
-        template<typename I0,
-                 typename S0,
-                 typename I1,
-                 typename C = equal_to,
-                 typename P0 = identity,
-                 typename P1 = identity>
-        RANGES_DEPRECATED(
-            "Use the variant of ranges::equal that takes an upper bound for "
-            "both sequences")
-        constexpr auto RANGES_FUN_NIEBLOID(equal)(I0 begin0,
-                                                  S0 end0,
-                                                  I1 begin1,
-                                                  C pred = C{},
-                                                  P0 proj0 = P0{},
-                                                  P1 proj1 = P1{}) //
-            ->CPP_ret(bool)(                                       //
-                requires input_iterator<I0> && sentinel_for<S0, I0> &&
-                input_iterator<I1> && indirectly_comparable<I0, I1, C, P0, P1>)
-        {
-            for(; begin0 != end0; ++begin0, ++begin1)
-                if(!invoke(pred, invoke(proj0, *begin0), invoke(proj1, *begin1)))
-                    return false;
-            return true;
-        }
-
-        /// \overload
-        template<typename I0,
-                 typename S0,
-                 typename I1,
-                 typename S1,
-                 typename C = equal_to,
-                 typename P0 = identity,
-                 typename P1 = identity>
-        constexpr auto RANGES_FUN_NIEBLOID(equal)(I0 begin0,
-                                                  S0 end0,
-                                                  I1 begin1,
-                                                  S1 end1,
-                                                  C pred = C{},
-                                                  P0 proj0 = P0{},
-                                                  P1 proj1 = P1{}) //
-            ->CPP_ret(bool)(                                       //
-                requires input_iterator<I0> && sentinel_for<S0, I0> &&
-                input_iterator<I1> && sentinel_for<S1, I1> &&
-                indirectly_comparable<I0, I1, C, P0, P1>)
-        {
-            if(RANGES_CONSTEXPR_IF(sized_sentinel_for<S0, I0> &&
-                                   sized_sentinel_for<S1, I1>))
-                if(distance(begin0, end0) != distance(begin1, end1))
-                    return false;
-            return detail::equal_nocheck(std::move(begin0),
-                                         std::move(end0),
-                                         std::move(begin1),
-                                         std::move(end1),
-                                         std::move(pred),
-                                         std::move(proj0),
-                                         std::move(proj1));
-        }
-
-        /// \overload
-        template<typename Rng0,
-                 typename I1Ref,
-                 typename C = equal_to,
-                 typename P0 = identity,
-                 typename P1 = identity>
-        RANGES_DEPRECATED(
-            "Use the variant of ranges::equal that takes an upper bound for "
-            "both sequences")
-        constexpr auto RANGES_FUN_NIEBLOID(equal)(Rng0 && rng0,
-                                                  I1Ref && begin1,
-                                                  C pred = C{},
-                                                  P0 proj0 = P0{},
-                                                  P1 proj1 = P1{}) //
-            ->CPP_ret(bool)(                                       //
-                requires input_range<Rng0> && input_iterator<uncvref_t<I1Ref>> &&
-                indirectly_comparable<iterator_t<Rng0>, uncvref_t<I1Ref>, C, P0, P1>)
-        {
-            RANGES_DIAGNOSTIC_PUSH
-            RANGES_DIAGNOSTIC_IGNORE_DEPRECATED_DECLARATIONS
-            return (*this)(begin(rng0),
-                           end(rng0),
-                           (I1Ref &&) begin1,
-                           std::move(pred),
-                           std::move(proj0),
-                           std::move(proj1));
-            RANGES_DIAGNOSTIC_POP
-        }
-
-        /// \overload
-        template<typename Rng0,
-                 typename Rng1,
-                 typename C = equal_to,
-                 typename P0 = identity,
-                 typename P1 = identity>
-        constexpr auto RANGES_FUN_NIEBLOID(equal)(
-            Rng0 && rng0, Rng1 && rng1, C pred = C{}, P0 proj0 = P0{}, P1 proj1 = P1{}) //
-            ->CPP_ret(bool)(                                                            //
-                requires input_range<Rng0> && input_range<Rng1> &&
-                indirectly_comparable<iterator_t<Rng0>, iterator_t<Rng1>, C, P0, P1>)
-        {
-            if(RANGES_CONSTEXPR_IF(sized_range<Rng0> && sized_range<Rng1>))
-                if(distance(rng0) != distance(rng1))
-                    return false;
-            return detail::equal_nocheck(begin(rng0),
-                                         end(rng0),
-                                         begin(rng1),
-                                         end(rng1),
-                                         std::move(pred),
-                                         std::move(proj0),
-                                         std::move(proj1));
-        }
-
-    RANGES_END_NIEBLOID(equal)
-
-    namespace cpp20
-    {
-        using ranges::equal;
-    }
-    /// @}
-} // namespace ranges
-
-#endif // include guard

external/repo/range-v3/include/range/v3/algorithm/equal_range.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2014-present
-//  Copyright Casey Carter 2016
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-#ifndef RANGES_V3_ALGORITHM_EQUAL_RANGE_HPP
-#define RANGES_V3_ALGORITHM_EQUAL_RANGE_HPP
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/algorithm/aux_/equal_range_n.hpp>
-#include <range/v3/algorithm/aux_/lower_bound_n.hpp>
-#include <range/v3/algorithm/upper_bound.hpp>
-#include <range/v3/functional/comparisons.hpp>
-#include <range/v3/functional/identity.hpp>
-#include <range/v3/functional/invoke.hpp>
-#include <range/v3/iterator/operations.hpp>
-#include <range/v3/range/access.hpp>
-#include <range/v3/range/concepts.hpp>
-#include <range/v3/range/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-#include <range/v3/view/subrange.hpp>
-
-namespace ranges
-{
-    /// \addtogroup group-algorithms
-    /// @{
-    RANGES_BEGIN_NIEBLOID(equal_range)
-
-        /// \brief function template \c equal_range
-        template<typename I,
-                 typename S,
-                 typename V,
-                 typename C = less,
-                 typename P = identity>
-        auto RANGES_FUN_NIEBLOID(equal_range)(
-            I first, S last, V const & val, C pred = C{}, P proj = P{})
-            ->CPP_ret(subrange<I>)( //
-                requires forward_iterator<I> && sentinel_for<S, I> &&
-                indirect_strict_weak_order<C, V const *, projected<I, P>>)
-        {
-            if(RANGES_CONSTEXPR_IF(sized_sentinel_for<S, I>))
-            {
-                auto const len = distance(first, last);
-                return aux::equal_range_n(
-                    std::move(first), len, val, std::move(pred), std::move(proj));
-            }
-
-            // Probe exponentially for either end-of-range, an iterator that
-            // is past the equal range (i.e., denotes an element greater
-            // than val), or is in the equal range (denotes an element equal
-            // to val).
-            auto dist = iter_difference_t<I>{1};
-            while(true)
-            {
-                auto mid = first;
-                auto d = advance(mid, dist, last);
-                if(d || mid == last)
-                {
-                    // at the end of the input range
-                    dist -= d;
-                    return aux::equal_range_n(
-                        std::move(first), dist, val, std::ref(pred), std::ref(proj));
-                }
-                // if val < *mid, mid is after the target range.
-                auto && v = *mid;
-                auto && pv = invoke(proj, (decltype(v) &&)v);
-                if(invoke(pred, val, pv))
-                {
-                    return aux::equal_range_n(
-                        std::move(first), dist, val, std::ref(pred), std::ref(proj));
-                }
-                else if(!invoke(pred, pv, val))
-                {
-                    // *mid == val: the lower bound is <= mid, and the upper bound is >
-                    // mid.
-                    return {
-                        aux::lower_bound_n(
-                            std::move(first), dist, val, std::ref(pred), std::ref(proj)),
-                        upper_bound(std::move(mid),
-                                    std::move(last),
-                                    val,
-                                    std::ref(pred),
-                                    std::ref(proj))};
-                }
-                // *mid < val, mid is before the target range.
-                first = std::move(mid);
-                ++first;
-                dist *= 2;
-            }
-        }
-
-        /// \overload
-        template<typename Rng, typename V, typename C = less, typename P = identity>
-        auto RANGES_FUN_NIEBLOID(equal_range)(
-            Rng && rng, V const & val, C pred = C{}, P proj = P{}) //
-            ->CPP_ret(safe_subrange_t<Rng>)(                       //
-                requires forward_range<Rng> &&
-                indirect_strict_weak_order<C, V const *, projected<iterator_t<Rng>, P>>)
-        {
-            if(RANGES_CONSTEXPR_IF(sized_range<Rng>))
-            {
-                auto const len = distance(rng);
-                return aux::equal_range_n(
-                    begin(rng), len, val, std::move(pred), std::move(proj));
-            }
-
-            return (*this)(begin(rng), end(rng), val, std::move(pred), std::move(proj));
-        }
-
-    RANGES_END_NIEBLOID(equal_range)
-
-    namespace cpp20
-    {
-        using ranges::equal_range;
-    }
-    /// @}
-} // namespace ranges
-
-#endif // include guard

external/repo/range-v3/include/range/v3/algorithm/fill.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2013-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-#ifndef RANGES_V3_ALGORITHM_FILL_HPP
-#define RANGES_V3_ALGORITHM_FILL_HPP
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/iterator/concepts.hpp>
-#include <range/v3/range/access.hpp>
-#include <range/v3/range/concepts.hpp>
-#include <range/v3/range/dangling.hpp>
-#include <range/v3/range/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    /// \addtogroup group-algorithms
-    /// @{
-    RANGES_BEGIN_NIEBLOID(fill)
-
-        /// \brief function template \c fill
-        template<typename O, typename S, typename V>
-        auto RANGES_FUN_NIEBLOID(fill)(O first, S last, V const & val) //
-            ->CPP_ret(O)(                                              //
-                requires output_iterator<O, V const &> && sentinel_for<S, O>)
-        {
-            for(; first != last; ++first)
-                *first = val;
-            return first;
-        }
-
-        /// \overload
-        template<typename Rng, typename V>
-        auto RANGES_FUN_NIEBLOID(fill)(Rng && rng, V const & val)
-            ->CPP_ret(safe_iterator_t<Rng>)( //
-                requires output_range<Rng, V const &>)
-        {
-            return (*this)(begin(rng), end(rng), val);
-        }
-
-    RANGES_END_NIEBLOID(fill)
-
-    namespace cpp20
-    {
-        using ranges::fill;
-    }
-    /// @}
-} // namespace ranges
-
-#endif // include guard

external/repo/range-v3/include/range/v3/algorithm/fill_n.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2013-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-#ifndef RANGES_V3_ALGORITHM_FILL_N_HPP
-#define RANGES_V3_ALGORITHM_FILL_N_HPP
-
-#include <utility>
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/iterator/concepts.hpp>
-#include <range/v3/iterator/operations.hpp>
-#include <range/v3/range/access.hpp>
-#include <range/v3/range/concepts.hpp>
-#include <range/v3/range/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    /// \addtogroup group-algorithms
-    /// @{
-    RANGES_BEGIN_NIEBLOID(fill_n)
-
-        /// \brief function template \c equal
-        template<typename O, typename V>
-        auto RANGES_FUN_NIEBLOID(fill_n)(O first, iter_difference_t<O> n, V const & val)
-            ->CPP_ret(O)( //
-                requires output_iterator<O, V const &>)
-        {
-            RANGES_EXPECT(n >= 0);
-            auto norig = n;
-            auto b = uncounted(first);
-            for(; n != 0; ++b, --n)
-                *b = val;
-            return recounted(first, b, norig);
-        }
-
-    RANGES_END_NIEBLOID(fill_n)
-
-    namespace cpp20
-    {
-        using ranges::fill_n;
-    }
-    /// @}
-} // namespace ranges
-
-#endif // include guard

external/repo/range-v3/include/range/v3/algorithm/find.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2014-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-#ifndef RANGES_V3_ALGORITHM_FIND_HPP
-#define RANGES_V3_ALGORITHM_FIND_HPP
-
-#include <utility>
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/functional/identity.hpp>
-#include <range/v3/functional/invoke.hpp>
-#include <range/v3/iterator/concepts.hpp>
-#include <range/v3/iterator/traits.hpp>
-#include <range/v3/range/access.hpp>
-#include <range/v3/range/concepts.hpp>
-#include <range/v3/range/dangling.hpp>
-#include <range/v3/range/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    /// \addtogroup group-algorithms
-    /// @{
-    RANGES_BEGIN_NIEBLOID(find)
-        /// \brief template function \c find
-        ///
-        /// range-based version of the \c find std algorithm
-        ///
-        /// \pre `Rng` is a model of the `Range` concept
-        /// \pre `I` is a model of the `input_iterator` concept
-        /// \pre `S` is a model of the `sentinel_for<I>` concept
-        /// \pre `P` is a model of the `invocable<iter_common_reference_t<I>>` concept
-        /// \pre The ResultType of `P` is equality_comparable with V
-        template<typename I, typename S, typename V, typename P = identity>
-        auto RANGES_FUN_NIEBLOID(find)(I first, S last, V const & val, P proj = P{})
-            ->CPP_ret(I)( //
-                requires input_iterator<I> && sentinel_for<S, I> &&
-                indirect_relation<equal_to, projected<I, P>, V const *>)
-        {
-            for(; first != last; ++first)
-                if(invoke(proj, *first) == val)
-                    break;
-            return first;
-        }
-
-        /// \overload
-        template<typename Rng, typename V, typename P = identity>
-        auto RANGES_FUN_NIEBLOID(find)(Rng && rng, V const & val, P proj = P{})
-            ->CPP_ret(safe_iterator_t<Rng>)( //
-                requires input_range<Rng> &&
-                indirect_relation<equal_to, projected<iterator_t<Rng>, P>, V const *>)
-        {
-            return (*this)(begin(rng), end(rng), val, std::move(proj));
-        }
-
-    RANGES_END_NIEBLOID(find)
-
-    namespace cpp20
-    {
-        using ranges::find;
-    }
-    /// @}
-} // namespace ranges
-
-#endif // include guard

external/repo/range-v3/include/range/v3/algorithm/find_end.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2014-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-#ifndef RANGES_V3_ALGORITHM_FIND_END_HPP
-#define RANGES_V3_ALGORITHM_FIND_END_HPP
-
-#include <utility>
-
-#include <meta/meta.hpp>
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/functional/comparisons.hpp>
-#include <range/v3/functional/identity.hpp>
-#include <range/v3/functional/invoke.hpp>
-#include <range/v3/iterator/concepts.hpp>
-#include <range/v3/iterator/operations.hpp>
-#include <range/v3/iterator/traits.hpp>
-#include <range/v3/range/access.hpp>
-#include <range/v3/range/concepts.hpp>
-#include <range/v3/range/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-#include <range/v3/view/subrange.hpp>
-
-namespace ranges
-{
-    /// \cond
-    namespace detail
-    {
-        template<typename I, typename S>
-        auto next_to_if(I i, S s, std::true_type) -> CPP_ret(I)( //
-            requires input_iterator<I> && sentinel_for<S, I>)
-        {
-            return ranges::next(i, s);
-        }
-
-        template<typename I, typename S>
-        auto next_to_if(I, S s, std::false_type) -> CPP_ret(S)( //
-            requires input_iterator<I> && sentinel_for<S, I>)
-        {
-            return s;
-        }
-
-        template<bool B, typename I, typename S>
-        auto next_to_if(I i, S s) -> CPP_ret(meta::if_c<B, I, S>)( //
-            requires input_iterator<I> && sentinel_for<S, I>)
-        {
-            return detail::next_to_if(std::move(i), std::move(s), meta::bool_<B>{});
-        }
-
-        template<typename I1, typename S1, typename I2, typename S2, typename R,
-                 typename P>
-        subrange<I1> find_end_impl(I1 begin1, S1 end1, I2 begin2, S2 end2, R pred, P proj,
-                                   detail::forward_iterator_tag_,
-                                   detail::forward_iterator_tag_)
-        {
-            bool found = false;
-            I1 res_begin, res_end;
-            if(begin2 == end2)
-            {
-                auto e1 = ranges::next(begin1, end1);
-                return {e1, e1};
-            }
-            while(true)
-            {
-                while(true)
-                {
-                    if(begin1 == end1)
-                        return {(found ? res_begin : begin1), (found ? res_end : begin1)};
-                    if(invoke(pred, invoke(proj, *begin1), *begin2))
-                        break;
-                    ++begin1;
-                }
-                auto tmp1 = begin1;
-                auto tmp2 = begin2;
-                while(true)
-                {
-                    if(++tmp2 == end2)
-                    {
-                        res_begin = begin1++;
-                        res_end = ++tmp1;
-                        found = true;
-                        break;
-                    }
-                    if(++tmp1 == end1)
-                        return {(found ? res_begin : tmp1), (found ? res_end : tmp1)};
-                    if(!invoke(pred, invoke(proj, *tmp1), *tmp2))
-                    {
-                        ++begin1;
-                        break;
-                    }
-                }
-            }
-        }
-
-        template<typename I1, typename I2, typename R, typename P>
-        subrange<I1> find_end_impl(I1 begin1, I1 end1, I2 begin2, I2 end2, R pred, P proj,
-                                   detail::bidirectional_iterator_tag_,
-                                   detail::bidirectional_iterator_tag_)
-        {
-            // modeled after search algorithm (in reverse)
-            if(begin2 == end2)
-                return {end1, end1}; // Everything matches an empty sequence
-            I1 l1 = end1;
-            I2 l2 = end2;
-            --l2;
-            while(true)
-            {
-                // Find end element in sequence 1 that matches *(end2-1), with a mininum
-                // of loop checks
-                do
-                    // return {end1,end1} if no element matches *begin2
-                    if(begin1 == l1)
-                        return {end1, end1};
-                while(!invoke(pred, invoke(proj, *--l1), *l2));
-                // *l1 matches *l2, now match elements before here
-                I1 m1 = l1;
-                I2 m2 = l2;
-                do
-                    // If pattern exhausted, {m1,++l1} is the answer
-                    // (works for 1 element pattern)
-                    if(m2 == begin2)
-                        return {m1, ++l1};
-                    // Otherwise if source exhausted, pattern not found
-                    else if(m1 == begin1)
-                        return {end1, end1};
-                // if there is a mismatch, restart with a new l1
-                // else there is a match, check next elements
-                while(invoke(pred, invoke(proj, *--m1), *--m2));
-            }
-        }
-
-        template<typename I1, typename I2, typename R, typename P>
-        subrange<I1> find_end_impl(I1 begin1, I1 end1, I2 begin2, I2 end2, R pred, P proj,
-                                   detail::random_access_iterator_tag_,
-                                   detail::random_access_iterator_tag_)
-        {
-            // Take advantage of knowing source and pattern lengths.  Stop short when
-            // source is smaller than pattern
-            auto len2 = end2 - begin2;
-            if(len2 == 0)
-                return {end1, end1};
-            auto len1 = end1 - begin1;
-            if(len1 < len2)
-                return {end1, end1};
-            I1 const start =
-                begin1 + (len2 - 1); // End of pattern match can't go before here
-            I1 l1 = end1;
-            I2 l2 = end2;
-            --l2;
-            while(true)
-            {
-                do
-                    if(start == l1)
-                        return {end1, end1};
-                while(!invoke(pred, invoke(proj, *--l1), *l2));
-                I1 m1 = l1;
-                I2 m2 = l2;
-                do
-                    if(m2 == begin2)
-                        return {m1, ++l1};
-                // no need to check range on m1 because s guarantees we have enough source
-                while(invoke(pred, invoke(proj, *--m1), *--m2));
-            }
-        }
-    } // namespace detail
-    /// \endcond
-
-    /// \addtogroup group-algorithms
-    /// @{
-    RANGES_BEGIN_NIEBLOID(find_end)
-
-        /// \brief function template \c find_end
-        template<typename I1,
-                 typename S1,
-                 typename I2,
-                 typename S2,
-                 typename R = equal_to,
-                 typename P = identity>
-        auto RANGES_FUN_NIEBLOID(find_end)(
-            I1 begin1, S1 end1, I2 begin2, S2 end2, R pred = R{}, P proj = P{}) //
-            ->CPP_ret(subrange<I1>)(                                            //
-                requires forward_iterator<I1> && sentinel_for<S1, I1> &&
-                forward_iterator<I2> && sentinel_for<S2, I2> &&
-                indirect_relation<R, projected<I1, P>, I2>)
-        {
-            constexpr bool Bidi =
-                bidirectional_iterator<I1> && bidirectional_iterator<I2>;
-            return detail::find_end_impl(begin1,
-                                         detail::next_to_if<Bidi>(begin1, end1),
-                                         begin2,
-                                         detail::next_to_if<Bidi>(begin2, end2),
-                                         std::move(pred),
-                                         std::move(proj),
-                                         iterator_tag_of<I1>(),
-                                         iterator_tag_of<I2>());
-        }
-
-        /// \overload
-        template<typename Rng1,
-                 typename Rng2,
-                 typename R = equal_to,
-                 typename P = identity>
-        auto RANGES_FUN_NIEBLOID(find_end)(
-            Rng1 && rng1, Rng2 && rng2, R pred = R{}, P proj = P{}) //
-            ->CPP_ret(safe_subrange_t<Rng1>)(                       //
-                requires forward_range<Rng1> && forward_range<Rng2> &&
-                indirect_relation<R, projected<iterator_t<Rng1>, P>, iterator_t<Rng2>>)
-        {
-            return (*this)(begin(rng1),
-                           end(rng1),
-                           begin(rng2),
-                           end(rng2),
-                           std::move(pred),
-                           std::move(proj));
-        }
-
-    RANGES_END_NIEBLOID(find_end)
-
-    namespace cpp20
-    {
-        using ranges::find_end;
-    }
-    /// @}
-} // namespace ranges
-
-#endif // include guard

external/repo/range-v3/include/range/v3/algorithm/find_first_of.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2014-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 0.0. (See accompanying
-//  file LICENSE_0_0.txt or copy at
-//  http://www.boost.org/LICENSE_0_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-#ifndef RANGES_V3_ALGORITHM_FIND_FIRST_OF_HPP
-#define RANGES_V3_ALGORITHM_FIND_FIRST_OF_HPP
-
-#include <utility>
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/functional/comparisons.hpp>
-#include <range/v3/functional/identity.hpp>
-#include <range/v3/functional/invoke.hpp>
-#include <range/v3/iterator/concepts.hpp>
-#include <range/v3/iterator/traits.hpp>
-#include <range/v3/range/access.hpp>
-#include <range/v3/range/concepts.hpp>
-#include <range/v3/range/dangling.hpp>
-#include <range/v3/range/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    /// \addtogroup group-algorithms
-    /// @{
-    RANGES_BEGIN_NIEBLOID(find_first_of)
-        // Rationale: return I0 instead of pair<I0,I1> because find_first_of need
-        // not actually compute the end of [I1,S0); therefore, it is not necessarily
-        // losing information. E.g., if begin0 == end0, we can return begin0 immediately.
-        // If we returned pair<I0,I1>, we would need to do an O(N) scan to find the
-        // end position.
-
-        /// \brief function template \c find_first_of
-        template<typename I0,
-                 typename S0,
-                 typename I1,
-                 typename S1,
-                 typename R = equal_to,
-                 typename P0 = identity,
-                 typename P1 = identity>
-        constexpr auto RANGES_FUN_NIEBLOID(find_first_of)(I0 begin0,
-                                                          S0 end0,
-                                                          I1 begin1,
-                                                          S1 end1,
-                                                          R pred = R{},
-                                                          P0 proj0 = P0{},
-                                                          P1 proj1 = P1{}) //
-            ->CPP_ret(I0)(                                                 //
-                requires input_iterator<I0> && sentinel_for<S0, I0> &&
-                forward_iterator<I1> && sentinel_for<S1, I1> &&
-                indirect_relation<R, projected<I0, P0>, projected<I1, P1>>)
-        {
-            for(; begin0 != end0; ++begin0)
-                for(auto tmp = begin1; tmp != end1; ++tmp)
-                    if(invoke(pred, invoke(proj0, *begin0), invoke(proj1, *tmp)))
-                        return begin0;
-            return begin0;
-        }
-
-        /// \overload
-        template<typename Rng0,
-                 typename Rng1,
-                 typename R = equal_to,
-                 typename P0 = identity,
-                 typename P1 = identity>
-        constexpr auto RANGES_FUN_NIEBLOID(find_first_of)(
-            Rng0 && rng0, Rng1 && rng1, R pred = R{}, P0 proj0 = P0{}, P1 proj1 = P1{}) //
-            ->CPP_ret(safe_iterator_t<Rng0>)(                                           //
-                requires input_range<Rng0> && forward_range<Rng1> &&
-                indirect_relation<R,
-                                  projected<iterator_t<Rng0>, P0>,
-                                  projected<iterator_t<Rng1>, P1>>)
-        {
-            return (*this)(begin(rng0),
-                           end(rng0),
-                           begin(rng1),
-                           end(rng1),
-                           std::move(pred),
-                           std::move(proj0),
-                           std::move(proj1));
-        }
-
-    RANGES_END_NIEBLOID(find_first_of)
-
-    namespace cpp20
-    {
-        using ranges::find_first_of;
-    }
-    /// @}
-} // namespace ranges
-
-#endif // include guard

external/repo/range-v3/include/range/v3/algorithm/find_if.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2013-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-#ifndef RANGES_V3_ALGORITHM_FIND_IF_HPP
-#define RANGES_V3_ALGORITHM_FIND_IF_HPP
-
-#include <utility>
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/functional/identity.hpp>
-#include <range/v3/functional/invoke.hpp>
-#include <range/v3/iterator/concepts.hpp>
-#include <range/v3/iterator/traits.hpp>
-#include <range/v3/range/access.hpp>
-#include <range/v3/range/concepts.hpp>
-#include <range/v3/range/dangling.hpp>
-#include <range/v3/range/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    /// \addtogroup group-algorithms
-    /// @{
-    RANGES_BEGIN_NIEBLOID(find_if)
-        /// \brief template function \c find
-        ///
-        /// range-based version of the \c find std algorithm
-        ///
-        /// \pre `Rng` is a model of the `Range` concept
-        /// \pre `I` is a model of the `input_iterator` concept
-        /// \pre `S` is a model of the `sentinel_for<I>` concept
-        /// \pre `P` is a model of the `invocable<V>` concept, where `V` is the
-        ///      value type of I.
-        /// \pre `F` models `predicate<X>`, where `X` is the result type
-        ///      of `invocable<P, V>`
-        template<typename I, typename S, typename F, typename P = identity>
-        auto RANGES_FUN_NIEBLOID(find_if)(I first, S last, F pred, P proj = P{}) //
-            ->CPP_ret(I)(                                                        //
-                requires input_iterator<I> && sentinel_for<S, I> &&
-                indirect_unary_predicate<F, projected<I, P>>)
-        {
-            for(; first != last; ++first)
-                if(invoke(pred, invoke(proj, *first)))
-                    break;
-            return first;
-        }
-
-        /// \overload
-        template<typename Rng, typename F, typename P = identity>
-        auto RANGES_FUN_NIEBLOID(find_if)(Rng && rng, F pred, P proj = P{})
-            ->CPP_ret(safe_iterator_t<Rng>)( //
-                requires input_range<Rng> &&
-                indirect_unary_predicate<F, projected<iterator_t<Rng>, P>>)
-        {
-            return (*this)(begin(rng), end(rng), std::move(pred), std::move(proj));
-        }
-
-    RANGES_END_NIEBLOID(find_if)
-
-    namespace cpp20
-    {
-        using ranges::find_if;
-    }
-    /// @}
-} // namespace ranges
-
-#endif // include guard

external/repo/range-v3/include/range/v3/algorithm/find_if_not.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2013-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-#ifndef RANGES_V3_ALGORITHM_FIND_IF_NOT_HPP
-#define RANGES_V3_ALGORITHM_FIND_IF_NOT_HPP
-
-#include <utility>
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/functional/identity.hpp>
-#include <range/v3/functional/invoke.hpp>
-#include <range/v3/iterator/concepts.hpp>
-#include <range/v3/iterator/traits.hpp>
-#include <range/v3/range/access.hpp>
-#include <range/v3/range/concepts.hpp>
-#include <range/v3/range/dangling.hpp>
-#include <range/v3/range/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    /// \addtogroup group-algorithms
-    /// @{
-    RANGES_BEGIN_NIEBLOID(find_if_not)
-        /// \brief template function \c find_if_not
-        ///
-        /// range-based version of the \c find_if_not std algorithm
-        ///
-        /// \pre `Rng` is a model of the `Range` concept
-        /// \pre `I` is a model of the `input_iterator` concept
-        /// \pre `S` is a model of the `sentinel_for<I>` concept
-        /// \pre `P` is a model of the `invocable<V>` concept, where `V` is the
-        ///      value type of I.
-        /// \pre `F` models `predicate<X>`, where `X` is the result type
-        ///      of `invocable<P, V>`
-        template<typename I, typename S, typename F, typename P = identity>
-        auto RANGES_FUN_NIEBLOID(find_if_not)(I first, S last, F pred, P proj = P{}) //
-            ->CPP_ret(I)(                                                            //
-                requires input_iterator<I> && sentinel_for<S, I> &&
-                indirect_unary_predicate<F, projected<I, P>>)
-        {
-            for(; first != last; ++first)
-                if(!invoke(pred, invoke(proj, *first)))
-                    break;
-            return first;
-        }
-
-        /// \overload
-        template<typename Rng, typename F, typename P = identity>
-        auto RANGES_FUN_NIEBLOID(find_if_not)(Rng && rng, F pred, P proj = P{})
-            ->CPP_ret(safe_iterator_t<Rng>)( //
-                requires input_range<Rng> &&
-                indirect_unary_predicate<F, projected<iterator_t<Rng>, P>>)
-        {
-            return (*this)(begin(rng), end(rng), std::move(pred), std::move(proj));
-        }
-
-    RANGES_END_NIEBLOID(find_if_not)
-
-    namespace cpp20
-    {
-        using ranges::find_if_not;
-    }
-    /// @}
-} // namespace ranges
-
-#endif // include guard

external/repo/range-v3/include/range/v3/algorithm/for_each.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2014-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-#ifndef RANGES_V3_ALGORITHM_FOR_EACH_HPP
-#define RANGES_V3_ALGORITHM_FOR_EACH_HPP
-
-#include <functional>
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/algorithm/result_types.hpp>
-#include <range/v3/functional/identity.hpp>
-#include <range/v3/functional/invoke.hpp>
-#include <range/v3/functional/reference_wrapper.hpp>
-#include <range/v3/iterator/traits.hpp>
-#include <range/v3/range/access.hpp>
-#include <range/v3/range/concepts.hpp>
-#include <range/v3/range/dangling.hpp>
-#include <range/v3/range/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    /// \addtogroup group-algorithms
-    /// @{
-    template<typename I, typename F>
-    using for_each_result = detail::in_fun_result<I, F>;
-
-    RANGES_BEGIN_NIEBLOID(for_each)
-
-        /// \brief function template \c for_each
-        template<typename I, typename S, typename F, typename P = identity>
-        auto RANGES_FUN_NIEBLOID(for_each)(I first, S last, F fun, P proj = P{})
-            ->CPP_ret(for_each_result<I, F>)( //
-                requires input_iterator<I> && sentinel_for<S, I> &&
-                indirectly_unary_invocable<F, projected<I, P>>)
-        {
-            for(; first != last; ++first)
-            {
-                invoke(fun, invoke(proj, *first));
-            }
-            return {detail::move(first), detail::move(fun)};
-        }
-
-        /// \overload
-        template<typename Rng, typename F, typename P = identity>
-        auto RANGES_FUN_NIEBLOID(for_each)(Rng && rng, F fun, P proj = P{})
-            ->CPP_ret(for_each_result<safe_iterator_t<Rng>, F>)( //
-                requires input_range<Rng> &&
-                indirectly_unary_invocable<F, projected<iterator_t<Rng>, P>>)
-        {
-            return {(*this)(begin(rng), end(rng), ref(fun), detail::move(proj)).in,
-                    detail::move(fun)};
-        }
-
-    RANGES_END_NIEBLOID(for_each)
-
-    namespace cpp20
-    {
-        using ranges::for_each;
-        using ranges::for_each_result;
-    } // namespace cpp20
-    /// @}
-} // namespace ranges
-
-#endif // include guard

external/repo/range-v3/include/range/v3/algorithm/for_each_n.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2014-present
-//  Copyright Rostislav Khlebnikov 2017
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-#ifndef RANGES_V3_ALGORITHM_FOR_EACH_N_HPP
-#define RANGES_V3_ALGORITHM_FOR_EACH_N_HPP
-
-#include <functional>
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/algorithm/result_types.hpp>
-#include <range/v3/functional/identity.hpp>
-#include <range/v3/functional/invoke.hpp>
-#include <range/v3/iterator/operations.hpp>
-#include <range/v3/iterator/traits.hpp>
-#include <range/v3/range/concepts.hpp>
-#include <range/v3/range/dangling.hpp>
-#include <range/v3/range/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    /// \addtogroup group-algorithms
-    /// @{
-    RANGES_BEGIN_NIEBLOID(for_each_n)
-
-        /// \brief function template \c for_each_n
-        template<typename I, typename F, typename P = identity>
-        auto RANGES_FUN_NIEBLOID(for_each_n)(
-            I first, iter_difference_t<I> n, F fun, P proj = P{}) //
-            ->CPP_ret(I)(                                         //
-                requires input_iterator<I> &&
-                indirectly_unary_invocable<F, projected<I, P>>)
-        {
-            RANGES_EXPECT(0 <= n);
-            auto norig = n;
-            auto b = uncounted(first);
-            for(; 0 < n; ++b, --n)
-                invoke(fun, invoke(proj, *b));
-            return recounted(first, b, norig);
-        }
-
-        /// \overload
-        template<typename Rng, typename F, typename P = identity>
-        auto RANGES_FUN_NIEBLOID(for_each_n)(
-            Rng && rng, range_difference_t<Rng> n, F fun, P proj = P{})
-            ->CPP_ret(safe_iterator_t<Rng>)( //
-                requires input_range<Rng> &&
-                indirectly_unary_invocable<F, projected<iterator_t<Rng>, P>>)
-        {
-            if(sized_range<Rng>)
-                RANGES_EXPECT(n <= distance(rng));
-
-            return (*this)(begin(rng), n, detail::move(fun), detail::move(proj));
-        }
-
-    RANGES_END_NIEBLOID(for_each_n)
-
-    // Not yet!
-    //  namespace cpp20
-    // {
-    //     using ranges::for_each_n;
-    // }
-    /// @}
-} // namespace ranges
-
-#endif // include guard

external/repo/range-v3/include/range/v3/algorithm/generate.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2014-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-#ifndef RANGES_V3_ALGORITHM_GENERATE_HPP
-#define RANGES_V3_ALGORITHM_GENERATE_HPP
-
-#include <utility>
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/algorithm/result_types.hpp>
-#include <range/v3/functional/invoke.hpp>
-#include <range/v3/functional/reference_wrapper.hpp>
-#include <range/v3/iterator/concepts.hpp>
-#include <range/v3/range/access.hpp>
-#include <range/v3/range/concepts.hpp>
-#include <range/v3/range/dangling.hpp>
-#include <range/v3/range/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    /// \addtogroup group-algorithms
-    /// @{
-    template<typename O, typename F>
-    using generate_result = detail::out_fun_result<O, F>;
-
-    RANGES_BEGIN_NIEBLOID(generate)
-
-        /// \brief function template \c generate_n
-        template<typename O, typename S, typename F>
-        auto RANGES_FUN_NIEBLOID(generate)(O first, S last, F fun) //
-            ->CPP_ret(generate_result<O, F>)(                      //
-                requires invocable<F &> && output_iterator<O, invoke_result_t<F &>> &&
-                sentinel_for<S, O>)
-        {
-            for(; first != last; ++first)
-                *first = invoke(fun);
-            return {detail::move(first), detail::move(fun)};
-        }
-
-        /// \overload
-        template<typename Rng, typename F>
-        auto RANGES_FUN_NIEBLOID(generate)(Rng && rng, F fun)
-            ->CPP_ret(generate_result<safe_iterator_t<Rng>, F>)( //
-                requires invocable<F &> && output_range<Rng, invoke_result_t<F &>>)
-        {
-            return {(*this)(begin(rng), end(rng), ref(fun)).out, detail::move(fun)};
-        }
-
-    RANGES_END_NIEBLOID(generate)
-
-    namespace cpp20
-    {
-        using ranges::generate;
-        using ranges::generate_result;
-    } // namespace cpp20
-    /// @}
-} // namespace ranges
-
-#endif // include guard

external/repo/range-v3/include/range/v3/algorithm/generate_n.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2014-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-#ifndef RANGES_V3_ALGORITHM_GENERATE_N_HPP
-#define RANGES_V3_ALGORITHM_GENERATE_N_HPP
-
-#include <tuple>
-#include <utility>
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/algorithm/result_types.hpp>
-#include <range/v3/functional/invoke.hpp>
-#include <range/v3/iterator/concepts.hpp>
-#include <range/v3/iterator/operations.hpp>
-#include <range/v3/range/access.hpp>
-#include <range/v3/range/concepts.hpp>
-#include <range/v3/range/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    /// \addtogroup group-algorithms
-    /// @{
-    template<typename O, typename F>
-    using generate_n_result = detail::out_fun_result<O, F>;
-
-    RANGES_BEGIN_NIEBLOID(generate_n)
-
-        /// \brief function template \c generate_n
-        template<typename O, typename F>
-        auto RANGES_FUN_NIEBLOID(generate_n)(O first, iter_difference_t<O> n, F fun)
-            ->CPP_ret(generate_n_result<O, F>)( //
-                requires invocable<F &> && output_iterator<O, invoke_result_t<F &>>)
-        {
-            RANGES_EXPECT(n >= 0);
-            auto norig = n;
-            auto b = uncounted(first);
-            for(; 0 != n; ++b, --n)
-                *b = invoke(fun);
-            return {recounted(first, b, norig), detail::move(fun)};
-        }
-
-    RANGES_END_NIEBLOID(generate_n)
-
-    namespace cpp20
-    {
-        using ranges::generate_n;
-        using ranges::generate_n_result;
-    } // namespace cpp20
-    // @}
-} // namespace ranges
-
-#endif // include guard

external/repo/range-v3/include/range/v3/algorithm/heap_algorithm.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2014-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-//===----------------------------------------------------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is dual licensed under the MIT and the University of Illinois Open
-// Source Licenses. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-#ifndef RANGES_V3_ALGORITHM_HEAP_ALGORITHM_HPP
-#define RANGES_V3_ALGORITHM_HEAP_ALGORITHM_HPP
-
-#include <functional>
-
-#include <meta/meta.hpp>
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/functional/comparisons.hpp>
-#include <range/v3/functional/identity.hpp>
-#include <range/v3/functional/invoke.hpp>
-#include <range/v3/iterator/concepts.hpp>
-#include <range/v3/iterator/operations.hpp>
-#include <range/v3/iterator/traits.hpp>
-#include <range/v3/range/access.hpp>
-#include <range/v3/range/concepts.hpp>
-#include <range/v3/range/dangling.hpp>
-#include <range/v3/range/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    /// \cond
-    namespace detail
-    {
-        struct is_heap_until_n_fn
-        {
-            template<typename I, typename C = less, typename P = identity>
-            auto operator()(I const begin_, iter_difference_t<I> const n_, C pred = C{},
-                            P proj = P{}) const -> CPP_ret(I)( //
-                requires random_access_iterator<I> &&
-                    indirect_strict_weak_order<C, projected<I, P>>)
-            {
-                RANGES_EXPECT(0 <= n_);
-                iter_difference_t<I> p = 0, c = 1;
-                I pp = begin_;
-                while(c < n_)
-                {
-                    I cp = begin_ + c;
-                    if(invoke(pred, invoke(proj, *pp), invoke(proj, *cp)))
-                        return cp;
-                    ++c;
-                    ++cp;
-                    if(c == n_ || invoke(pred, invoke(proj, *pp), invoke(proj, *cp)))
-                        return cp;
-                    ++p;
-                    ++pp;
-                    c = 2 * p + 1;
-                }
-                return begin_ + n_;
-            }
-        };
-
-        RANGES_INLINE_VARIABLE(is_heap_until_n_fn, is_heap_until_n)
-
-        struct is_heap_n_fn
-        {
-            template<typename I, typename C = less, typename P = identity>
-            auto operator()(I first, iter_difference_t<I> n, C pred = C{},
-                            P proj = P{}) const -> CPP_ret(bool)( //
-                requires random_access_iterator<I> &&
-                    indirect_strict_weak_order<C, projected<I, P>>)
-            {
-                return is_heap_until_n(first, n, std::move(pred), std::move(proj)) ==
-                       first + n;
-            }
-        };
-
-        RANGES_INLINE_VARIABLE(is_heap_n_fn, is_heap_n)
-    } // namespace detail
-    /// \endcond
-
-    /// \addtogroup group-algorithms
-    /// @{
-    RANGES_BEGIN_NIEBLOID(is_heap_until)
-
-        /// \brief function template \c is_heap_until
-        template<typename I, typename S, typename C = less, typename P = identity>
-        auto RANGES_FUN_NIEBLOID(is_heap_until)(
-            I first, S last, C pred = C{}, P proj = P{})
-            ->CPP_ret(I)( //
-                requires random_access_iterator<I> && sentinel_for<S, I> &&
-                indirect_strict_weak_order<C, projected<I, P>>)
-        {
-            return detail::is_heap_until_n(std::move(first),
-                                           distance(first, last),
-                                           std::move(pred),
-                                           std::move(proj));
-        }
-
-        /// \overload
-        template<typename Rng, typename C = less, typename P = identity>
-        auto RANGES_FUN_NIEBLOID(is_heap_until)(Rng && rng, C pred = C{}, P proj = P{})
-            ->CPP_ret(safe_iterator_t<Rng>)( //
-                requires random_access_range<Rng> &&
-                indirect_strict_weak_order<C, projected<iterator_t<Rng>, P>>)
-        {
-            return detail::is_heap_until_n(
-                begin(rng), distance(rng), std::move(pred), std::move(proj));
-        }
-
-    RANGES_END_NIEBLOID(is_heap_until)
-
-    namespace cpp20
-    {
-        using ranges::is_heap_until;
-    }
-
-    RANGES_BEGIN_NIEBLOID(is_heap)
-
-        /// \brief function template \c is_heap
-        template<typename I, typename S, typename C = less, typename P = identity>
-        auto RANGES_FUN_NIEBLOID(is_heap)(I first, S last, C pred = C{}, P proj = P{}) //
-            ->CPP_ret(bool)(                                                           //
-                requires random_access_iterator<I> && sentinel_for<S, I> &&
-                indirect_strict_weak_order<C, projected<I, P>>)
-        {
-            return detail::is_heap_n(std::move(first),
-                                     distance(first, last),
-                                     std::move(pred),
-                                     std::move(proj));
-        }
-
-        /// \overload
-        template<typename Rng, typename C = less, typename P = identity>
-        auto RANGES_FUN_NIEBLOID(is_heap)(Rng && rng, C pred = C{}, P proj = P{}) //
-            ->CPP_ret(bool)(                                                      //
-                requires random_access_range<Rng> &&
-                indirect_strict_weak_order<C, projected<iterator_t<Rng>, P>>)
-        {
-            return detail::is_heap_n(
-                begin(rng), distance(rng), std::move(pred), std::move(proj));
-        }
-
-    RANGES_END_NIEBLOID(is_heap)
-
-    namespace cpp20
-    {
-        using ranges::is_heap;
-    }
-    /// @}
-
-    /// \cond
-    namespace detail
-    {
-        struct sift_up_n_fn
-        {
-            template<typename I, typename C = less, typename P = identity>
-            void operator()(I first, iter_difference_t<I> len, C pred = C{},
-                            P proj = P{}) const
-            {
-                if(len > 1)
-                {
-                    I last = first + len;
-                    len = (len - 2) / 2;
-                    I i = first + len;
-                    if(invoke(pred, invoke(proj, *i), invoke(proj, *--last)))
-                    {
-                        iter_value_t<I> v = iter_move(last);
-                        do
-                        {
-                            *last = iter_move(i);
-                            last = i;
-                            if(len == 0)
-                                break;
-                            len = (len - 1) / 2;
-                            i = first + len;
-                        } while(invoke(pred, invoke(proj, *i), invoke(proj, v)));
-                        *last = std::move(v);
-                    }
-                }
-            }
-        };
-
-        RANGES_INLINE_VARIABLE(sift_up_n_fn, sift_up_n)
-
-        struct sift_down_n_fn
-        {
-            template<typename I, typename C = less, typename P = identity>
-            void operator()(I first, iter_difference_t<I> len, I start, C pred = C{},
-                            P proj = P{}) const
-            {
-                // left-child of start is at 2 * start + 1
-                // right-child of start is at 2 * start + 2
-                auto child = start - first;
-
-                if(len < 2 || (len - 2) / 2 < child)
-                    return;
-
-                child = 2 * child + 1;
-                I child_i = first + child;
-
-                if((child + 1) < len &&
-                   invoke(pred, invoke(proj, *child_i), invoke(proj, *(child_i + 1))))
-                {
-                    // right-child exists and is greater than left-child
-                    ++child_i;
-                    ++child;
-                }
-
-                // check if we are in heap-order
-                if(invoke(pred, invoke(proj, *child_i), invoke(proj, *start)))
-                    // we are, start is larger than it's largest child
-                    return;
-
-                iter_value_t<I> top = iter_move(start);
-                do
-                {
-                    // we are not in heap-order, swap the parent with it's largest child
-                    *start = iter_move(child_i);
-                    start = child_i;
-
-                    if((len - 2) / 2 < child)
-                        break;
-
-                    // recompute the child based off of the updated parent
-                    child = 2 * child + 1;
-                    child_i = first + child;
-
-                    if((child + 1) < len &&
-                       invoke(pred, invoke(proj, *child_i), invoke(proj, *(child_i + 1))))
-                    {
-                        // right-child exists and is greater than left-child
-                        ++child_i;
-                        ++child;
-                    }
-
-                    // check if we are in heap-order
-                } while(!invoke(pred, invoke(proj, *child_i), invoke(proj, top)));
-                *start = std::move(top);
-            }
-        };
-
-        RANGES_INLINE_VARIABLE(sift_down_n_fn, sift_down_n)
-    } // namespace detail
-    /// \endcond
-
-    /// \addtogroup group-algorithms
-    /// @{
-    RANGES_BEGIN_NIEBLOID(push_heap)
-
-        /// \brief function template \c push_heap
-        template<typename I, typename S, typename C = less, typename P = identity>
-        auto RANGES_FUN_NIEBLOID(push_heap)(
-            I first, S last, C pred = C{}, P proj = P{}) //
-            ->CPP_ret(I)(                                //
-                requires random_access_iterator<I> && sentinel_for<S, I> &&
-                sortable<I, C, P>)
-        {
-            auto n = distance(first, last);
-            detail::sift_up_n(first, n, std::move(pred), std::move(proj));
-            return first + n;
-        }
-
-        /// \overload
-        template<typename Rng, typename C = less, typename P = identity>
-        auto RANGES_FUN_NIEBLOID(push_heap)(Rng && rng, C pred = C{}, P proj = P{}) //
-            ->CPP_ret(safe_iterator_t<Rng>)(                                        //
-                requires random_access_range<Rng> && sortable<iterator_t<Rng>, C, P>)
-        {
-            iterator_t<Rng> first = ranges::begin(rng);
-            auto n = distance(rng);
-            detail::sift_up_n(first, n, std::move(pred), std::move(proj));
-            return first + n;
-        }
-
-    RANGES_END_NIEBLOID(push_heap)
-
-    namespace cpp20
-    {
-        using ranges::push_heap;
-    }
-    /// @}
-
-    /// \cond
-    namespace detail
-    {
-        struct pop_heap_n_fn
-        {
-            template<typename I, typename C = less, typename P = identity>
-            auto operator()(I first, iter_difference_t<I> len, C pred = C{},
-                            P proj = P{}) const -> CPP_ret(void)( //
-                requires random_access_iterator<I> && sortable<I, C, P>)
-            {
-                if(len > 1)
-                {
-                    ranges::iter_swap(first, first + (len - 1));
-                    detail::sift_down_n(
-                        first, len - 1, first, std::move(pred), std::move(proj));
-                }
-            }
-        };
-
-        RANGES_INLINE_VARIABLE(pop_heap_n_fn, pop_heap_n)
-    } // namespace detail
-    /// \endcond
-
-    /// \addtogroup group-algorithms
-    /// @{
-    RANGES_BEGIN_NIEBLOID(pop_heap)
-
-        /// \brief function template \c pop_heap
-        template<typename I, typename S, typename C = less, typename P = identity>
-        auto RANGES_FUN_NIEBLOID(pop_heap)(I first, S last, C pred = C{}, P proj = P{})
-            ->CPP_ret(I)( //
-                requires random_access_iterator<I> && sentinel_for<S, I> &&
-                sortable<I, C, P>)
-        {
-            auto n = distance(first, last);
-            detail::pop_heap_n(first, n, std::move(pred), std::move(proj));
-            return first + n;
-        }
-
-        /// \overload
-        template<typename Rng, typename C = less, typename P = identity>
-        auto RANGES_FUN_NIEBLOID(pop_heap)(Rng && rng, C pred = C{}, P proj = P{})
-            ->CPP_ret(safe_iterator_t<Rng>)( //
-                requires random_access_range<Rng> && sortable<iterator_t<Rng>, C, P>)
-        {
-            iterator_t<Rng> first = ranges::begin(rng);
-            auto n = distance(rng);
-            detail::pop_heap_n(first, n, std::move(pred), std::move(proj));
-            return first + n;
-        }
-
-    RANGES_END_NIEBLOID(pop_heap)
-
-    namespace cpp20
-    {
-        using ranges::pop_heap;
-    }
-
-    RANGES_BEGIN_NIEBLOID(make_heap)
-
-        /// \brief function template \c make_heap
-        template<typename I, typename S, typename C = less, typename P = identity>
-        auto RANGES_FUN_NIEBLOID(make_heap)(I first, S last, C pred = C{}, P proj = P{})
-            ->CPP_ret(I)( //
-                requires random_access_iterator<I> && sentinel_for<S, I> &&
-                sortable<I, C, P>)
-        {
-            iter_difference_t<I> const n = distance(first, last);
-            if(n > 1)
-                // start from the first parent, there is no need to consider children
-                for(auto start = (n - 2) / 2; start >= 0; --start)
-                    detail::sift_down_n(
-                        first, n, first + start, std::ref(pred), std::ref(proj));
-            return first + n;
-        }
-
-        /// \overload
-        template<typename Rng, typename C = less, typename P = identity>
-        auto RANGES_FUN_NIEBLOID(make_heap)(Rng && rng, C pred = C{}, P proj = P{})
-            ->CPP_ret(safe_iterator_t<Rng>)( //
-                requires random_access_range<Rng> && sortable<iterator_t<Rng>, C, P>)
-        {
-            iterator_t<Rng> first = ranges::begin(rng);
-            auto const n = distance(rng);
-            if(n > 1)
-                // start from the first parent, there is no need to consider children
-                for(auto start = (n - 2) / 2; start >= 0; --start)
-                    detail::sift_down_n(
-                        first, n, first + start, std::ref(pred), std::ref(proj));
-            return first + n;
-        }
-
-    RANGES_END_NIEBLOID(make_heap)
-
-    namespace cpp20
-    {
-        using ranges::make_heap;
-    }
-
-    RANGES_BEGIN_NIEBLOID(sort_heap)
-
-        template<typename I, typename S, typename C = less, typename P = identity>
-        auto RANGES_FUN_NIEBLOID(sort_heap)(I first, S last, C pred = C{}, P proj = P{})
-            ->CPP_ret(I)( //
-                requires random_access_iterator<I> && sentinel_for<S, I> &&
-                sortable<I, C, P>)
-        {
-            iter_difference_t<I> const n = distance(first, last);
-            for(auto i = n; i > 1; --i)
-                detail::pop_heap_n(first, i, std::ref(pred), std::ref(proj));
-            return first + n;
-        }
-
-        template<typename Rng, typename C = less, typename P = identity>
-        auto RANGES_FUN_NIEBLOID(sort_heap)(Rng && rng, C pred = C{}, P proj = P{})
-            ->CPP_ret(safe_iterator_t<Rng>)( //
-                requires random_access_range<Rng &> && sortable<iterator_t<Rng>, C, P>)
-        {
-            iterator_t<Rng> first = ranges::begin(rng);
-            auto const n = distance(rng);
-            for(auto i = n; i > 1; --i)
-                detail::pop_heap_n(first, i, std::ref(pred), std::ref(proj));
-            return first + n;
-        }
-
-    RANGES_END_NIEBLOID(sort_heap)
-
-    namespace cpp20
-    {
-        using ranges::sort_heap;
-    }
-    /// @}
-} // namespace ranges
-
-#endif // include guard

external/repo/range-v3/include/range/v3/algorithm/inplace_merge.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2014-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-//===----------------------------------------------------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is dual licensed under the MIT and the University of Illinois Open
-// Source Licenses. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-#ifndef RANGES_V3_ALGORITHM_INPLACE_MERGE_HPP
-#define RANGES_V3_ALGORITHM_INPLACE_MERGE_HPP
-
-#include <functional>
-#include <memory>
-#include <new>
-#include <type_traits>
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/algorithm/lower_bound.hpp>
-#include <range/v3/algorithm/merge.hpp>
-#include <range/v3/algorithm/min.hpp>
-#include <range/v3/algorithm/move.hpp>
-#include <range/v3/algorithm/rotate.hpp>
-#include <range/v3/algorithm/upper_bound.hpp>
-#include <range/v3/functional/comparisons.hpp>
-#include <range/v3/functional/identity.hpp>
-#include <range/v3/functional/invoke.hpp>
-#include <range/v3/functional/not_fn.hpp>
-#include <range/v3/iterator/concepts.hpp>
-#include <range/v3/iterator/move_iterators.hpp>
-#include <range/v3/iterator/operations.hpp>
-#include <range/v3/iterator/reverse_iterator.hpp>
-#include <range/v3/iterator/traits.hpp>
-#include <range/v3/range/access.hpp>
-#include <range/v3/range/concepts.hpp>
-#include <range/v3/range/dangling.hpp>
-#include <range/v3/range/traits.hpp>
-#include <range/v3/utility/memory.hpp>
-#include <range/v3/utility/static_const.hpp>
-#include <range/v3/utility/swap.hpp>
-
-namespace ranges
-{
-    /// \cond
-    namespace detail
-    {
-        struct merge_adaptive_fn
-        {
-        private:
-            template<typename I, typename C, typename P>
-            static void impl(I first, I middle, I last, iter_difference_t<I> len1,
-                             iter_difference_t<I> len2, iter_value_t<I> * const buf,
-                             C & pred, P & proj)
-            {
-                auto tmpbuf = make_raw_buffer(buf);
-                if(len1 <= len2)
-                {
-                    auto p = ranges::move(first, middle, tmpbuf.begin()).out;
-                    merge(make_move_iterator(buf),
-                          make_move_iterator(p.base().base()),
-                          make_move_iterator(std::move(middle)),
-                          make_move_iterator(std::move(last)),
-                          std::move(first),
-                          std::ref(pred),
-                          std::ref(proj),
-                          std::ref(proj));
-                }
-                else
-                {
-                    auto p = ranges::move(middle, last, tmpbuf.begin()).out;
-                    using RBi = ranges::reverse_iterator<I>;
-                    using Rv = ranges::reverse_iterator<iter_value_t<I> *>;
-                    merge(make_move_iterator(RBi{std::move(middle)}),
-                          make_move_iterator(RBi{std::move(first)}),
-                          make_move_iterator(Rv{p.base().base()}),
-                          make_move_iterator(Rv{buf}),
-                          RBi{std::move(last)},
-                          not_fn(std::ref(pred)),
-                          std::ref(proj),
-                          std::ref(proj));
-                }
-            }
-
-        public:
-            template<typename I, typename C = less, typename P = identity>
-            auto operator()(I first, I middle, I last, iter_difference_t<I> len1,
-                            iter_difference_t<I> len2, iter_value_t<I> * buf,
-                            std::ptrdiff_t buf_size, C pred = C{}, P proj = P{}) const
-                -> CPP_ret(void)( //
-                    requires bidirectional_iterator<I> && sortable<I, C, P>)
-            {
-                using D = iter_difference_t<I>;
-                while(true)
-                {
-                    // if middle == last, we're done
-                    if(len2 == 0)
-                        return;
-                    // shrink [first, middle) as much as possible (with no moves),
-                    // returning if it shrinks to 0
-                    for(; true; ++first, --len1)
-                    {
-                        if(len1 == 0)
-                            return;
-                        if(invoke(pred, invoke(proj, *middle), invoke(proj, *first)))
-                            break;
-                    }
-                    if(len1 <= buf_size || len2 <= buf_size)
-                    {
-                        merge_adaptive_fn::impl(std::move(first),
-                                                std::move(middle),
-                                                std::move(last),
-                                                len1,
-                                                len2,
-                                                buf,
-                                                pred,
-                                                proj);
-                        return;
-                    }
-                    // first < middle < end
-                    // *first > *middle
-                    // partition [first, m1) [m1, middle) [middle, m2) [m2, last) such
-                    // that
-                    //     all elements in:
-                    //         [first, m1)  <= [middle, m2)
-                    //         [middle, m2) <  [m1, middle)
-                    //         [m1, middle) <= [m2, last)
-                    //     and m1 or m2 is in the middle of its range
-                    I m1;    // "median" of [first, middle)
-                    I m2;    // "median" of [middle, last)
-                    D len11; // distance(first, m1)
-                    D len21; // distance(middle, m2)
-                    // binary search smaller range
-                    if(len1 < len2)
-                    { // len >= 1, len2 >= 2
-                        len21 = len2 / 2;
-                        m2 = next(middle, len21);
-                        m1 = upper_bound(first,
-                                         middle,
-                                         invoke(proj, *m2),
-                                         std::ref(pred),
-                                         std::ref(proj));
-                        len11 = distance(first, m1);
-                    }
-                    else
-                    {
-                        if(len1 == 1)
-                        { // len1 >= len2 && len2 > 0, therefore len2 == 1
-                            // It is known *first > *middle
-                            ranges::iter_swap(first, middle);
-                            return;
-                        }
-                        // len1 >= 2, len2 >= 1
-                        len11 = len1 / 2;
-                        m1 = next(first, len11);
-                        m2 = lower_bound(middle,
-                                         last,
-                                         invoke(proj, *m1),
-                                         std::ref(pred),
-                                         std::ref(proj));
-                        len21 = distance(middle, m2);
-                    }
-                    D len12 = len1 - len11; // distance(m1, middle)
-                    D len22 = len2 - len21; // distance(m2, last)
-                    // [first, m1) [m1, middle) [middle, m2) [m2, last)
-                    // swap middle two partitions
-                    middle = rotate(m1, std::move(middle), m2).begin();
-                    // len12 and len21 now have swapped meanings
-                    // merge smaller range with recursive call and larger with tail
-                    // recursion elimination
-                    if(len11 + len21 < len12 + len22)
-                    {
-                        (*this)(std::move(first),
-                                std::move(m1),
-                                middle,
-                                len11,
-                                len21,
-                                buf,
-                                buf_size,
-                                std::ref(pred),
-                                std::ref(proj));
-                        first = std::move(middle);
-                        middle = std::move(m2);
-                        len1 = len12;
-                        len2 = len22;
-                    }
-                    else
-                    {
-                        (*this)(middle,
-                                std::move(m2),
-                                std::move(last),
-                                len12,
-                                len22,
-                                buf,
-                                buf_size,
-                                std::ref(pred),
-                                std::ref(proj));
-                        last = std::move(middle);
-                        middle = std::move(m1);
-                        len1 = len11;
-                        len2 = len21;
-                    }
-                }
-            }
-        };
-
-        RANGES_INLINE_VARIABLE(merge_adaptive_fn, merge_adaptive)
-
-        struct inplace_merge_no_buffer_fn
-        {
-            template<typename I, typename C = less, typename P = identity>
-            auto operator()(I first, I middle, I last, iter_difference_t<I> len1,
-                            iter_difference_t<I> len2, C pred = C{}, P proj = P{}) const
-                -> CPP_ret(void)( //
-                    requires bidirectional_iterator<I> && sortable<I, C, P>)
-            {
-                merge_adaptive(std::move(first),
-                               std::move(middle),
-                               std::move(last),
-                               len1,
-                               len2,
-                               static_cast<iter_value_t<I> *>(nullptr),
-                               0,
-                               std::move(pred),
-                               std::move(proj));
-            }
-        };
-
-        RANGES_INLINE_VARIABLE(inplace_merge_no_buffer_fn, inplace_merge_no_buffer)
-    } // namespace detail
-    /// \endcond
-
-    /// \addtogroup group-algorithms
-    /// @{
-    RANGES_BEGIN_NIEBLOID(inplace_merge)
-
-        // TODO reimplement to only need forward iterators
-
-        /// \brief function template \c inplace_merge
-        template<typename I, typename S, typename C = less, typename P = identity>
-        auto RANGES_FUN_NIEBLOID(inplace_merge)(
-            I first, I middle, S last, C pred = C{}, P proj = P{})
-            ->CPP_ret(I)( //
-                requires bidirectional_iterator<I> && sortable<I, C, P>)
-        {
-            using value_type = iter_value_t<I>;
-            auto len1 = distance(first, middle);
-            auto len2_and_end = enumerate(middle, last);
-            auto buf_size = ranges::min(len1, len2_and_end.first);
-            std::pair<value_type *, std::ptrdiff_t> buf{nullptr, 0};
-            std::unique_ptr<value_type, detail::return_temporary_buffer> h;
-            if(detail::is_trivially_copy_assignable<value_type>::value && 8 < buf_size)
-            {
-                buf = detail::get_temporary_buffer<value_type>(buf_size);
-                h.reset(buf.first);
-            }
-            detail::merge_adaptive(std::move(first),
-                                   std::move(middle),
-                                   len2_and_end.second,
-                                   len1,
-                                   len2_and_end.first,
-                                   buf.first,
-                                   buf.second,
-                                   std::move(pred),
-                                   std::move(proj));
-            return len2_and_end.second;
-        }
-
-        /// \overload
-        template<typename Rng, typename C = less, typename P = identity>
-        auto RANGES_FUN_NIEBLOID(inplace_merge)(
-            Rng && rng, iterator_t<Rng> middle, C pred = C{}, P proj = P{})
-            ->CPP_ret(safe_iterator_t<Rng>)( //
-                requires bidirectional_range<Rng> && sortable<iterator_t<Rng>, C, P>)
-        {
-            return (*this)(begin(rng),
-                           std::move(middle),
-                           end(rng),
-                           std::move(pred),
-                           std::move(proj));
-        }
-
-    RANGES_END_NIEBLOID(inplace_merge)
-
-    namespace cpp20
-    {
-        using ranges::inplace_merge;
-    }
-    /// @}
-} // namespace ranges
-
-#endif // include guard

external/repo/range-v3/include/range/v3/algorithm/is_partitioned.hpp

-/// \file
-// Range v3 library
-//
-//  Copyright Eric Niebler 2014-present
-//
-//  Use, modification and distribution is subject to the
-//  Boost Software License, Version 1.0. (See accompanying
-//  file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt)
-//
-// Project home: https://github.com/ericniebler/range-v3
-//
-//===-------------------------- algorithm ---------------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is dual licensed under the MIT and the University of Illinois Open
-// Source Licenses. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-#ifndef RANGES_V3_ALGORITHM_IS_PARTITIONED_HPP
-#define RANGES_V3_ALGORITHM_IS_PARTITIONED_HPP
-
-#include <meta/meta.hpp>
-
-#include <range/v3/range_fwd.hpp>
-
-#include <range/v3/functional/identity.hpp>
-#include <range/v3/functional/invoke.hpp>
-#include <range/v3/iterator/concepts.hpp>
-#include <range/v3/iterator/traits.hpp>
-#include <range/v3/range/access.hpp>
-#include <range/v3/range/concepts.hpp>
-#include <range/v3/range/traits.hpp>
-#include <range/v3/utility/static_const.hpp>
-
-namespace ranges
-{
-    /// \addtogroup group-algorithms
-    /// @{
-    RANGES_BEGIN_NIEBLOID(is_partitioned)
-
-        /// \brief function template \c is_partitioned
-        template<typename I, typename S, typename C, typename P = identity>
-        auto RANGES_FUN_NIEBLOID(is_partitioned)(I first, S last, C pred, P proj = P{}) //
-            ->CPP_ret(bool)(                                                            //
-                requires input_iterator<I> && sentinel_for<S, I> &&
-                indirect_unary_predicate<C, projected<I, P>>)
-        {
-            for(; first != last; ++first)
-                if(!invoke(pred, invoke(proj, *first)))
-                    break;
-            for(; first != last; ++first)
-                if(invoke(pred, invoke(proj, *first)))
-                    return false;
-            return true;
-        }
-
-        /// \overload
-        template<typename Rng, typename C, typename P = identity>
-        auto RANGES_FUN_NIEBLOID(is_partitioned)(Rng && rng, C pred, P proj = P{}) //
-            ->CPP_ret(bool)(                                                       //
-                requires input_range<Rng> &&
-                indirect_unary_predicate<C, projected<iterator_t<Rng>, P>>)
-        {
-            return (*this)(begin(rng), end(rng), std::move(pred), std::move(proj));
-        }
-
-    RANGES_END_NIEBLOID(is_partitioned)
-
-    namespace cpp20
-    {
-        using ranges::is_partitioned;
-    }
-    /// @}
-} // namespace ranges
-
-#endif // include guard