Fix C# bindings after recent breaking changes

Implementation for new Variant types Callable, Signal, StringName.
Added support for PackedInt64Array and PackedFloat64Array.

Add generation of signal members as events, as well as support for
user created signals as events.
NOTE: As of now, raising such events will not emit the signal. As such,
one must use `EmitSignal` instead of raising the event directly.

Removed old ThreadLocal fallback class. It's safe to use thread_local now since
it's supported on all minimum versions of compilers we support.

3 files changed, 21 insertions, 316 deletions

diff --git a/modules/mono/utils/macros.h b/modules/mono/utils/macros.h
index 754000dc14..8650d6cc09 100644
--- a/modules/mono/utils/macros.h
+++ b/modules/mono/utils/macros.h
@@ -36,38 +36,6 @@
 #define _GD_VARNAME_CONCAT_(m_a, m_b, m_c) _GD_VARNAME_CONCAT_A_(m_a, m_b, m_c)
 #define GD_UNIQUE_NAME(m_name) _GD_VARNAME_CONCAT_(m_name, _, __COUNTER__)
 
-// static assert
-// TODO: Get rid of this macro once we upgrade to C++11
-
-#ifdef __cpp_static_assert
-#define GD_STATIC_ASSERT(m_cond) static_assert((m_cond), "Condition '" #m_cond "' failed")
-#else
-#define GD_STATIC_ASSERT(m_cond) typedef int GD_UNIQUE_NAME(godot_static_assert)[((m_cond) ? 1 : -1)]
-#endif
-
-// final
-// TODO: Get rid of this macro once we upgrade to C++11
-
-#if (__cplusplus >= 201103L)
-#define GD_FINAL final
-#else
-#define GD_FINAL
-#endif
-
-// noreturn
-// TODO: Get rid of this macro once we upgrade to C++11
-
-#if (__cplusplus >= 201103L)
-#define GD_NORETURN [[noreturn]]
-#elif defined(__GNUC__)
-#define GD_NORETURN __attribute__((noreturn))
-#elif defined(_MSC_VER)
-#define GD_NORETURN __declspec(noreturn)
-#else
-#define GD_NORETURN
-#pragma message "Macro GD_NORETURN will have no effect"
-#endif
-
 // unreachable
 
 #if defined(_MSC_VER)
@@ -81,4 +49,25 @@
 	} while (true);
 #endif
 
+namespace gdmono {
+
+template <typename F>
+struct ScopeExit {
+	ScopeExit(F p_exit_func) :
+			exit_func(p_exit_func) {}
+	~ScopeExit() { exit_func(); }
+	F exit_func;
+};
+
+class ScopeExitAux {
+public:
+	template <typename F>
+	ScopeExit<F> operator+(F p_exit_func) { return ScopeExit<F>(p_exit_func); }
+};
+
+} // namespace gdmono
+
+#define SCOPE_EXIT \
+	auto GD_UNIQUE_NAME(gd_scope_exit) = gdmono::ScopeExitAux() + [=]()
+
 #endif // UTIL_MACROS_H
diff --git a/modules/mono/utils/thread_local.cpp b/modules/mono/utils/thread_local.cpp
deleted file mode 100644
index 4f10e3fb85..0000000000
--- a/modules/mono/utils/thread_local.cpp
+++ /dev/null
@@ -1,107 +0,0 @@
-/*************************************************************************/
-/*  thread_local.cpp                                                     */
-/*************************************************************************/
-/*                       This file is part of:                           */
-/*                           GODOT ENGINE                                */
-/*                      https://godotengine.org                          */
-/*************************************************************************/
-/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
-/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
-/*                                                                       */
-/* Permission is hereby granted, free of charge, to any person obtaining */
-/* a copy of this software and associated documentation files (the       */
-/* "Software"), to deal in the Software without restriction, including   */
-/* without limitation the rights to use, copy, modify, merge, publish,   */
-/* distribute, sublicense, and/or sell copies of the Software, and to    */
-/* permit persons to whom the Software is furnished to do so, subject to */
-/* the following conditions:                                             */
-/*                                                                       */
-/* The above copyright notice and this permission notice shall be        */
-/* included in all copies or substantial portions of the Software.       */
-/*                                                                       */
-/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
-/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
-/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
-/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
-/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
-/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
-/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
-/*************************************************************************/
-
-#include "thread_local.h"
-
-#ifdef WINDOWS_ENABLED
-#include <windows.h>
-#else
-#include <pthread.h>
-#endif
-
-#include "core/os/memory.h"
-#include "core/print_string.h"
-
-struct ThreadLocalStorage::Impl {
-
-#ifdef WINDOWS_ENABLED
-	DWORD dwFlsIndex;
-#else
-	pthread_key_t key;
-#endif
-
-	void *get_value() const {
-#ifdef WINDOWS_ENABLED
-		return FlsGetValue(dwFlsIndex);
-#else
-		return pthread_getspecific(key);
-#endif
-	}
-
-	void set_value(void *p_value) const {
-#ifdef WINDOWS_ENABLED
-		FlsSetValue(dwFlsIndex, p_value);
-#else
-		pthread_setspecific(key, p_value);
-#endif
-	}
-
-#ifdef WINDOWS_ENABLED
-#define _CALLBACK_FUNC_ __stdcall
-#else
-#define _CALLBACK_FUNC_
-#endif
-
-	Impl(void(_CALLBACK_FUNC_ *p_destr_callback_func)(void *)) {
-#ifdef WINDOWS_ENABLED
-		dwFlsIndex = FlsAlloc(p_destr_callback_func);
-		ERR_FAIL_COND(dwFlsIndex == FLS_OUT_OF_INDEXES);
-#else
-		pthread_key_create(&key, p_destr_callback_func);
-#endif
-	}
-
-	~Impl() {
-#ifdef WINDOWS_ENABLED
-		FlsFree(dwFlsIndex);
-#else
-		pthread_key_delete(key);
-#endif
-	}
-};
-
-void *ThreadLocalStorage::get_value() const {
-	return pimpl->get_value();
-}
-
-void ThreadLocalStorage::set_value(void *p_value) const {
-	pimpl->set_value(p_value);
-}
-
-void ThreadLocalStorage::alloc(void(_CALLBACK_FUNC_ *p_destr_callback)(void *)) {
-	pimpl = memnew(ThreadLocalStorage::Impl(p_destr_callback));
-}
-
-#undef _CALLBACK_FUNC_
-
-void ThreadLocalStorage::free() {
-	memdelete(pimpl);
-	pimpl = NULL;
-}
diff --git a/modules/mono/utils/thread_local.h b/modules/mono/utils/thread_local.h
deleted file mode 100644
index b1cc2e37ea..0000000000
--- a/modules/mono/utils/thread_local.h
+++ /dev/null
@@ -1,177 +0,0 @@
-/*************************************************************************/
-/*  thread_local.h                                                       */
-/*************************************************************************/
-/*                       This file is part of:                           */
-/*                           GODOT ENGINE                                */
-/*                      https://godotengine.org                          */
-/*************************************************************************/
-/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
-/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
-/*                                                                       */
-/* Permission is hereby granted, free of charge, to any person obtaining */
-/* a copy of this software and associated documentation files (the       */
-/* "Software"), to deal in the Software without restriction, including   */
-/* without limitation the rights to use, copy, modify, merge, publish,   */
-/* distribute, sublicense, and/or sell copies of the Software, and to    */
-/* permit persons to whom the Software is furnished to do so, subject to */
-/* the following conditions:                                             */
-/*                                                                       */
-/* The above copyright notice and this permission notice shall be        */
-/* included in all copies or substantial portions of the Software.       */
-/*                                                                       */
-/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
-/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
-/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
-/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
-/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
-/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
-/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
-/*************************************************************************/
-
-#ifndef THREAD_LOCAL_H
-#define THREAD_LOCAL_H
-
-#ifdef HAVE_CXX11_THREAD_LOCAL
-#define _THREAD_LOCAL_(m_t) thread_local m_t
-#else
-
-#if !defined(__GNUC__) && !defined(_MSC_VER)
-#error Platform or compiler not supported
-#endif
-
-#if defined(__GNUC__)
-
-#ifdef HAVE_GCC___THREAD
-#define _THREAD_LOCAL_(m_t) __thread m_t
-#else
-#define USE_CUSTOM_THREAD_LOCAL
-#endif
-
-#elif defined(_MSC_VER)
-
-#ifdef HAVE_DECLSPEC_THREAD
-#define _THREAD_LOCAL_(m_t) __declspec(thread) m_t
-#else
-#define USE_CUSTOM_THREAD_LOCAL
-#endif
-
-#endif // __GNUC__ _MSC_VER
-
-#endif // HAVE_CXX11_THREAD_LOCAL
-
-#ifdef USE_CUSTOM_THREAD_LOCAL
-#define _THREAD_LOCAL_(m_t) ThreadLocal<m_t>
-#endif
-
-#include "core/typedefs.h"
-
-#ifdef WINDOWS_ENABLED
-#define _CALLBACK_FUNC_ __stdcall
-#else
-#define _CALLBACK_FUNC_
-#endif
-
-struct ThreadLocalStorage {
-
-	void *get_value() const;
-	void set_value(void *p_value) const;
-
-	void alloc(void(_CALLBACK_FUNC_ *p_destr_callback)(void *));
-	void free();
-
-private:
-	struct Impl;
-	Impl *pimpl;
-};
-
-template <typename T>
-class ThreadLocal {
-
-	ThreadLocalStorage storage;
-
-	T init_val;
-
-	static void _CALLBACK_FUNC_ destr_callback(void *tls_data) {
-		memdelete(static_cast<T *>(tls_data));
-	}
-
-	T *_tls_get_value() const {
-		void *tls_data = storage.get_value();
-
-		if (tls_data)
-			return static_cast<T *>(tls_data);
-
-		T *data = memnew(T(init_val));
-
-		storage.set_value(data);
-
-		return data;
-	}
-
-	void _initialize(const T &p_init_val) {
-		init_val = p_init_val;
-		storage.alloc(&destr_callback);
-	}
-
-public:
-	ThreadLocal() {
-		_initialize(T());
-	}
-
-	ThreadLocal(const T &p_init_val) {
-		_initialize(p_init_val);
-	}
-
-	ThreadLocal(const ThreadLocal &other) {
-		_initialize(*other._tls_get_value());
-	}
-
-	~ThreadLocal() {
-		storage.free();
-	}
-
-	_FORCE_INLINE_ T *operator&() const {
-		return _tls_get_value();
-	}
-
-	_FORCE_INLINE_ operator T &() const {
-		return *_tls_get_value();
-	}
-
-	_FORCE_INLINE_ ThreadLocal &operator=(const T &val) {
-		T *ptr = _tls_get_value();
-		*ptr = val;
-		return *this;
-	}
-};
-
-struct FlagScopeGuard {
-
-	FlagScopeGuard(bool &p_flag) :
-			flag(p_flag) {
-		flag = !flag;
-	}
-
-	~FlagScopeGuard() {
-		flag = !flag;
-	}
-
-private:
-	bool &flag;
-};
-
-#undef _CALLBACK_FUNC_
-
-#define _TLS_RECURSION_GUARD_V_(m_ret)                    \
-	static _THREAD_LOCAL_(bool) _recursion_flag_ = false; \
-	if (_recursion_flag_)                                 \
-		return m_ret;                                     \
-	FlagScopeGuard _recursion_guard_(_recursion_flag_);
-
-#define _TLS_RECURSION_GUARD_                             \
-	static _THREAD_LOCAL_(bool) _recursion_flag_ = false; \
-	if (_recursion_flag_)                                 \
-		return;                                           \
-	FlagScopeGuard _recursion_guard_(_recursion_flag_);
-
-#endif // THREAD_LOCAL_H