1 files changed, 93 insertions, 0 deletions
diff --git a/immer/config.hpp b/immer/config.hpp
new file mode 100644
index 000000000000..581e905a4de3
--- /dev/null
+++ b/immer/config.hpp
@@ -0,0 +1,93 @@
+//
+// immer: immutable data structures for C++
+// Copyright (C) 2016, 2017, 2018 Juan Pedro Bolivar Puente
+//
+// This software is distributed under the Boost Software License, Version 1.0.
+// See accompanying file LICENSE or copy at http://boost.org/LICENSE_1_0.txt
+//
+
+#pragma once
+
+#if defined(__has_cpp_attribute)
+#if __has_cpp_attribute(nodiscard)
+#define IMMER_NODISCARD [[nodiscard]]
+#endif
+#else
+#if _MSVC_LANG >= 201703L
+#define IMMER_NODISCARD [[nodiscard]]
+#endif
+#endif
+
+#ifndef IMMER_NODISCARD
+#define IMMER_NODISCARD
+#endif
+
+#ifndef IMMER_TAGGED_NODE
+#ifdef NDEBUG
+#define IMMER_TAGGED_NODE 0
+#else
+#define IMMER_TAGGED_NODE 1
+#endif
+#endif
+
+#if IMMER_TAGGED_NODE
+#define IMMER_ASSERT_TAGGED(assertion) assert(assertion)
+#else
+#define IMMER_ASSERT_TAGGED(assertion)
+#endif
+
+#ifndef IMMER_DEBUG_TRACES
+#define IMMER_DEBUG_TRACES 0
+#endif
+
+#ifndef IMMER_DEBUG_PRINT
+#define IMMER_DEBUG_PRINT 0
+#endif
+
+#ifndef IMMER_DEBUG_DEEP_CHECK
+#define IMMER_DEBUG_DEEP_CHECK 0
+#endif
+
+#if IMMER_DEBUG_TRACES || IMMER_DEBUG_PRINT
+#include <iostream>
+#include <prettyprint.hpp>
+#endif
+
+#if IMMER_DEBUG_TRACES
+#define IMMER_TRACE(...) std::cout << __VA_ARGS__ << std::endl
+#else
+#define IMMER_TRACE(...)
+#endif
+#define IMMER_TRACE_F(...)                                                     \
+    IMMER_TRACE(__FILE__ << ":" << __LINE__ << ": " << __VA_ARGS__)
+#define IMMER_TRACE_E(expr) IMMER_TRACE("    " << #expr << " = " << (expr))
+
+#if defined(_MSC_VER)
+#define IMMER_UNREACHABLE __assume(false)
+#define IMMER_LIKELY(cond) cond
+#define IMMER_UNLIKELY(cond) cond
+#define IMMER_FORCEINLINE __forceinline
+#define IMMER_PREFETCH(p)
+#else
+#define IMMER_UNREACHABLE __builtin_unreachable()
+#define IMMER_LIKELY(cond) __builtin_expect(!!(cond), 1)
+#define IMMER_UNLIKELY(cond) __builtin_expect(!!(cond), 0)
+#define IMMER_FORCEINLINE inline __attribute__((always_inline))
+#define IMMER_PREFETCH(p)
+// #define IMMER_PREFETCH(p)    __builtin_prefetch(p)
+#endif
+
+#define IMMER_DESCENT_DEEP 0
+
+#ifdef NDEBUG
+#define IMMER_ENABLE_DEBUG_SIZE_HEAP 0
+#else
+#define IMMER_ENABLE_DEBUG_SIZE_HEAP 1
+#endif
+
+namespace immer {
+
+const auto default_bits           = 5;
+const auto default_free_list_size = 1 << 10;
+
+} // namespace immer