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Diffstat (limited to 'src/h-basic.hpp')
| -rw-r--r-- | src/h-basic.hpp | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/src/h-basic.hpp b/src/h-basic.hpp new file mode 100644 index 00000000..a9a533fe --- /dev/null +++ b/src/h-basic.hpp @@ -0,0 +1,134 @@ +#pragma once + +#include <cstdint> + +/* + * Choose the hardware, operating system, and compiler. + * Also, choose various "system level" compilation options. + * A lot of these definitions take effect in "h-system.h" + * + * Note that you may find it simpler to define some of these + * options in the "Makefile", especially any options describing + * what "system" is being used. + */ + +/* + * Extract the "WINDOWS" flag from the compiler + */ +#if defined(_Windows) || defined(__WINDOWS__) || \ + defined(__WIN32__) || defined(WIN32) || \ + defined(__WINNT__) || defined(__NT__) +# ifndef WINDOWS +# define WINDOWS +# endif +#endif + + + +/* + * OPTION: set "SET_UID" if the machine is a "multi-user" machine. + * This option is used to verify the use of "uids" and "gids" for + * various "Unix" calls, and of "pids" for getting a random seed, + * and of the "umask()" call for various reasons, and to guess if + * the "kill()" function is available, and for permission to use + * functions to extract user names and expand "tildes" in filenames. + * Basically, SET_UID should *only* be set for "Unix" machines. + */ +#if !defined(WINDOWS) +# define SET_UID +#endif + + +/* + * Every system seems to use its own symbol as a path separator. + * Default to the standard Unix slash, but attempt to change this + * for various other systems. Note that any system that uses the + * "period" as a separator (i.e. ACORN) will have to pretend that + * it uses the slash, and do its own mapping of period <-> slash. + */ +#undef PATH_SEP +#define PATH_SEP "/" +#if defined(WINDOWS) || defined(WINNT) +# undef PATH_SEP +# define PATH_SEP "\\" +#endif + + + +/* + * Basic "types". + * + * Note the attempt to make all basic types have 4 letters. + * This improves readibility and standardizes the code. + * + * Likewise, all complex types are at least 4 letters. + * Thus, almost every three letter word is a legal variable. + * But beware of certain reserved words ('for' and 'if' and 'do'). + * + * Note that the type used in structures for bit flags should be unsigned int. + * As long as these bit flags are sequential, they will be space smart. + * + * Note that on some machines, apparently "signed char" is illegal. + * + * It must be true that char/byte takes exactly 1 byte + * It must be true that sind/uind takes exactly 2 bytes + * It must be true that sbig/ubig takes exactly 4 bytes + * + * On Sparc's, a sint takes 4 bytes (2 is legal) + * On Sparc's, a long takes 4 bytes (8 is legal) + * On Sparc's, a real takes 8 bytes (4 is legal) + * + * Note that some files have already been included by "h-include.h" + * These include <stdio.h> and <sys/types>, which define some types + */ + + +/* Error codes for function return values */ +/* Success = 0, Failure = -N, Problem = +N */ +typedef int errr; + + +/* Note that unsigned values can cause math problems */ +/* An unsigned byte of memory */ +typedef unsigned char byte; + +/* Fixed-size integral types */ +using s16b = int16_t; +using u16b = uint16_t; +using s32b = int32_t; +using u32b = uint32_t; + + +/* + * Hack -- Define NULL + */ +#ifndef NULL +# ifdef __STDC__ +# define NULL ((void*)0) +# else +# define NULL ((char*)0) +# endif /* __STDC__ */ +#endif /* NULL */ + + +/**** Simple "Macros" ****/ + +/* + * Non-typed absolute value macro + */ +#undef ABS +#define ABS(a) (((a) < 0) ? (-(a)) : (a)) + + +/* + * Note that all "index" values must be "lowercase letters", while + * all "digits" must be "digits". Control characters can be made + * from any legal characters. XXX XXX XXX + */ +#define A2I(X) ((X) - 'a') +#define I2A(X) ((X) + 'a') +#define I2C(X) (static_cast<char>(I2A(X))) +#define D2I(X) ((X) - '0') +#define I2D(X) ((X) + '0') +#define KTRL(X) ((X) & 0x1F) +#define ESCAPE '\033' |