[RCC] Add Basic Data Types

Signed-off-by: Richard Qin <richard.qin.x@gmail.com>

2 files changed, 102 insertions, 0 deletions

diff --git a/rcc/include/rcc/.gitkeep b/rcc/include/rcc/.gitkeep
deleted file mode 100644
index e69de29..0000000
--- a/rcc/include/rcc/.gitkeep
+++ /dev/null
diff --git a/rcc/include/rcc/DataTypes.h b/rcc/include/rcc/DataTypes.h
new file mode 100644
index 0000000..edb5666
--- /dev/null
+++ b/rcc/include/rcc/DataTypes.h
@@ -0,0 +1,102 @@
+/*
+ RCC-Project
+
+ Copyright (C) 2026 Richard Qin
+
+ This file is part of RCC-Project.
+
+ RCC-Project is free software; you can redistribute it and/or modify it under
+ the terms of the GNU General Public License as published by the Free
+ Software Foundation; either version 3, or (at your option) any later
+ version.
+
+ RCC-Project is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ for more details.
+
+You should have received a copy of the GNU General Public License
+along with RCC-Project; see the file COPYING. If not see
+<http://www.gnu.org/licenses/>.
+*/
+
+// This implementation is based on include/llvm-c/DataTypes.h
+/*===-- include/llvm-c/DataTypes.h - Define fixed size types ------*- C -*-===*\
+ | *                                                                            *|*
+ |* Part of the LLVM Project, under the Apache License v2.0 with LLVM          *|
+ |* Exceptions.                                                                *|
+ |* See https://llvm.org/LICENSE.txt for license information.                  *|
+ |* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception                    *|
+ |*                                                                            *|
+ |*===----------------------------------------------------------------------===*|
+ |*                                                                            *|
+ |* This file contains definitions to figure out the size of _HOST_ data types.*|
+ |* This file is important because different host OS's define different macros,*|
+ |* which makes portability tough.  This file exports the following            *|
+ |* definitions:                                                               *|
+ |*                                                                            *|
+ |*   [u]int(32|64)_t : typedefs for signed and unsigned 32/64 bit system types*|
+ |*   [U]INT(8|16|32|64)_(MIN|MAX) : Constants for the min and max values.     *|
+ |*                                                                            *|
+ |* No library is required when using these functions.                         *|
+ |*                                                                            *|
+ |*===----------------------------------------------------------------------===*/
+
+/* Please leave this file C-compatible. */
+#ifndef RCC_DATATYPES_H
+#define RCC_DATATYPES_H
+
+#include <inttypes.h>
+#include <stdint.h>
+
+#ifndef _MSC_VER
+
+#if !defined(UINT32_MAX)
+# error "The standard header <cstdint> is not C++11 compliant. Must #define "\
+        "__STDC_LIMIT_MACROS before #including llvm-c/DataTypes.h"
+#endif
+
+#if !defined(UINT32_C)
+# error "The standard header <cstdint> is not C++11 compliant. Must #define "\
+        "__STDC_CONSTANT_MACROS before #including llvm-c/DataTypes.h"
+#endif
+
+/* Note that <inttypes.h> includes <stdint.h>, if this is a C99 system. */
+#include <sys/types.h>
+
+#ifdef _AIX
+// GCC is strict about defining large constants: they must have LL modifier.
+#undef INT64_MAX
+#undef INT64_MIN
+#endif
+
+#else /* _MSC_VER */
+#ifdef __cplusplus
+#include <cstddef>
+#include <cstdlib>
+#else
+#include <stddef.h>
+#include <stdlib.h>
+#endif
+#include <sys/types.h>
+
+#if defined(_WIN64)
+typedef signed __int64 ssize_t;
+#else
+typedef signed int ssize_t;
+#endif /* _WIN64 */
+
+#endif /* _MSC_VER */
+
+/* Set defaults for constants which we cannot find. */
+#if !defined(INT64_MAX)
+# define INT64_MAX 9223372036854775807LL
+#endif
+#if !defined(INT64_MIN)
+# define INT64_MIN ((-INT64_MAX)-1)
+#endif
+#if !defined(UINT64_MAX)
+# define UINT64_MAX 0xffffffffffffffffULL
+#endif
+
+#endif