Auto-import std::core. Fix module assignment of declarations. Introspection improvements. Deref null error panics in safe mode. Support for LLVM 15

lib/std/core/env.c3

@@ -0,0 +1,58 @@
+// Copyright (c) 2021 Christoffer Lerno. All rights reserved.
+// Use of this source code is governed by the MIT license
+// a copy of which can be found in the LICENSE_STDLIB file.
+module std::core::env;
+
+enum CompilerOptLevel
+{
+    O0,
+    O1,
+    O2,
+    O3
+}
+
+enum OsType
+{
+	UNKNOWN,
+	NONE,
+	ANANAS,
+	CLOUD_ABI,
+	DRAGON_FLY,
+	FREEBSD,
+	FUCHSIA,
+	IOS,
+	KFREEBSD,
+	LINUX,
+	PS3,
+	MACOSX,
+	NETBSD,
+	OPENBSD,
+	SOLARIS,
+	WIN32,
+	HAIKU,
+	MINIX,
+	RTEMS,
+	NACL,       // Native Client
+	CNK,        // BG/P Compute-Node Kernel
+	AIX,
+	CUDA,
+	NVOPENCL,
+	AMDHSA,
+	PS4,
+	ELFIAMCU,
+	TVOS,
+	WATCHOS,
+	MESA3D,
+	CONTIKI,
+	AMDPAL,
+	HERMITCORE,
+	HURD,
+	WASI,
+	EMSCRIPTEN,
+}
+
+const OsType OS_TYPE = (OsType)($$OS_TYPE);
+const CompilerOptLevel COMPILER_OPT_LEVEL = (CompilerOptLevel)($$COMPILER_OPT_LEVEL);
+const bool BIG_ENDIAN = $$PLATFORM_BIG_ENDIAN;
+const bool I128_SUPPORT = $$PLATFORM_I128_SUPPORTED;
+const bool COMPILER_SAFE_MODE = $$COMPILER_SAFE_MODE;