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/* --------------------------------------------------------------------------
* Basic data type definitions, prototypes and standard macros including
* machine dependent variations...
*
* The Hugs 98 system is Copyright (c) Mark P Jones, Alastair Reid, the
* Yale Haskell Group, and the Oregon Graduate Institute of Science and
* Technology, 1994-1999, All rights reserved. It is distributed as
* free software under the license in the file "License", which is
* included in the distribution.
*
* $RCSfile: prelude.h,v $
* $Revision: 1.7 $
* $Date: 2000/03/10 17:30:36 $
* ------------------------------------------------------------------------*/
#define NON_POSIX_SOURCE
/* AJG: machdep.h needs this, for S_IREAD and S_IFREG in cygwin? */
#include "config.h"
#include "options.h"
#include <stdio.h>
/*---------------------------------------------------------------------------
* Most of the configuration code from earlier versions of Hugs has been moved
* into config.h (which is usually automatically generated).
*
* Most of the configuration code is "feature based". That is, the
* configure script looks to see if a particular feature (or misfeature)
* is present on the compiler/OS.
*
* A small amount of configuration code is still "system based": it tests
* flags to determine what kind of compiler/system it's running on - from
* which it infers what features the compiler/system has. Use of system
* based tests generally indicates that we can't remember/figure out
* what the original problem was and so we can't add an appropriate feature
* test to the configure script.
*-------------------------------------------------------------------------*/
#ifdef __RISCOS__ /* Acorn DesktopC running RISCOS2 or 3 */
# define RISCOS 1
#else
# define RISCOS 0
#endif
#if defined __DJGPP__ && __DJGPP__==2
# define DJGPP2 1
#else
# define DJGPP2 0
#endif
#if defined __MSDOS__ && __MSDOS__ && !DJGPP2
# define DOS 1
#else
# define DOS 0
#endif
#if defined _WIN32 | defined __WIN32__
# define IS_WIN32 1
#else
# define IS_WIN32 0
#endif
/*---------------------------------------------------------------------------
* Platform-dependent settings:
*-------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------
* Include windows.h and friends:
*-------------------------------------------------------------------------*/
#if HAVE_WINDOWS_H
#include <windows.h> /* Misc. Windows hackery */
#endif
#if HUGS_FOR_WINDOWS
#if __MSDOS__
# define INT int
# define UNSIGNED unsigned
# define CHAR char
# define TCHAR char
# define UCHAR UNSIGNED CHAR
# define ULONG unsigned long
# define APIENTRY PASCAL
# define HUGE huge
# define LPOFNHOOKPROC FARPROC
# define CMDdata(w,l) (HIWORD(l)) /* decoding WM_COMMAND message */
# define CMDitem(w,l) (w)
# define CMDhwnd(w,l) ((HWND)(LOWORD(l)))
#else
# define HUGE
# define CMDdata(w,l) (HIWORD(w)) /* decoding WM_COMMAND message */
# define CMDitem(w,l) (LOWORD(w))
# define CMDhwnd(w,l) ((HWND)(l))
#endif
#include "win-menu.h"
extern char *appName;
extern HWND hWndText; /* text output window handle */
extern HWND hWndMain; /* main window handle */
#include "win-text.h"
#endif
/*---------------------------------------------------------------------------
* Macros used in declarations:
* function prototypes
* local/far declarations
* HUGS_noreturn/HUGS_unused (prevent spurious warnings)
* result type of main
* dynamic linking declarations
*-------------------------------------------------------------------------*/
#if HAVE_PROTOTYPES /* To enable use of prototypes whenever possible */
#define Args(x) x
#else
#define Args(x) ()
#endif
/* local = prefix for locally defined functions */
/* far = prefix for far pointers */
#if DOS
# define local near pascal
#else
# define local
# define far
#endif
#ifdef __GNUC__ /* Avoid spurious warnings */
#if __GNUC__ >= 2 && __GNUC_MINOR__ >= 7
#define HUGS_noreturn __attribute__ ((noreturn))
#define HUGS_unused __attribute__ ((unused))
#else
#define HUGS_noreturn
#define HUGS_unused
#endif
#else
#define HUGS_noreturn
#define HUGS_unused
#endif
/* result type of main function */
/* Hugs 1.01 could be configured to return void on Unix-like systems
* but I don't think this is necessary. ADR
*/
#define Main int
#define MainDone() return 0/*NOTUSED*/
/*---------------------------------------------------------------------------
* String operations:
*-------------------------------------------------------------------------*/
#if HAVE_STRING_H
# include <string.h>
#else
extern int strcmp Args((const char*, const char*));
extern int strncmp Args((const char*, const char*, int));
extern char *strchr Args((const char*, int));
extern char *strrchr Args((const char*, int));
extern size_t strlen Args((const char *));
extern char *strcpy Args((char *, const char*));
extern char *strcat Args((char *, const char*));
#endif
#if HAVE_STRCMP
#define strCompare strcmp
#else /* probably only used for DOS - ADR */
extern int stricmp Args((const char *, const char*));
#define strCompare stricmp
#endif
#if HAVE_CTYPE_H
# include <ctype.h>
#endif
#ifndef isascii
#define isascii(c) (((unsigned)(c))<128)
#endif
/*---------------------------------------------------------------------------
* Memory allocation
*-------------------------------------------------------------------------*/
#if HAVE_FARCALLOC
# include <alloc.h>
# define farCalloc(n,s) farcalloc((unsigned long)n,(unsigned long)s)
#elif HAVE_VALLOC
# include <stdlib.h>
# include <malloc.h>
# define farCalloc(n,s) (Void *)valloc(((unsigned)n)*((unsigned)s))
#else
# define farCalloc(n,s) (Void *)calloc(((unsigned)n),((unsigned)s))
#endif
/* bison-generated parsers like to have alloca - so try to define it */
#if HAVE__ALLOCA
#include <malloc.h>
#ifndef alloca
#define alloca _alloca
#endif
#endif
/*---------------------------------------------------------------------------
* Interrupting execution (signals, allowBreak):
*-------------------------------------------------------------------------*/
#if !DOS && VOID_INT_SIGNALS
# define sigProto(nm) void nm Args((int))
# define sigRaise(nm) nm(1)
# define sigHandler(nm) void nm(sig_arg) int sig_arg;
# define sigResume return
#else
# define sigProto(nm) int nm Args((Void))
# define sigRaise(nm) nm()
# define sigHandler(nm) int nm(Void)
# define sigResume return 1
#endif
/*---------------------------------------------------------------------------
* Assertions
*-------------------------------------------------------------------------*/
#if HAVE_ASSERT_H
#include <assert.h>
#else
#define assert(x) doNothing()
#endif
/*---------------------------------------------------------------------------
* General settings:
*-------------------------------------------------------------------------*/
#define Void void /* older compilers object to: typedef void Void; */
typedef unsigned Bool;
#define TRUE 1
#define FALSE 0
typedef char *String;
typedef int Int;
typedef long Long;
typedef int Char;
typedef unsigned int Unsigned; /* at least 32 bits */
typedef void* Ptr;
typedef void* Addr;
typedef void* HpPtr;
#define FloatImpType double
#define FloatPro double
#define FloatFMT "%.9g"
/* ToDo: this should probably go in dynamic.h - but then
* storage.h has to include dynamic.h!
*/
#if HAVE_WINDOWS_H && !defined(__MSDOS__)
typedef HINSTANCE ObjectFile;
#elif HAVE_DLFCN_H /* eg LINUX, SOLARIS, ULTRIX */
typedef void* ObjectFile;
#elif HAVE_DL_H /* eg HPUX */
typedef shl_t ObjectFile;
#else
#warning GHC file loading not available on this machine
#endif
#define doNothing() do { } while (0) /* Null statement */
#ifndef STD_PRELUDE
#if RISCOS
#define STD_PRELUDE "prelude"
#else
#define STD_PRELUDE "Prelude.hs"
#endif
#endif
#if DYN_TABLES /* Tables may be alloc'd at runtime*/
#define DECTABLE(tab) far *tab /* macros for declaration & defn */
#define DEFTABLE(tab,sz) far *tab = 0
#else /* or at compile-time: */
#define DECTABLE(tab) tab[]
#define DEFTABLE(tab,sz) tab[sz]
#endif
/*---------------------------------------------------------------------------
* Printf-related operations:
*-------------------------------------------------------------------------*/
#ifdef HAVE_STDARG_H
#include <stdarg.h>
#else
#include <varargs.h>
#endif
#if !defined(HAVE_SNPRINTF)
extern int snprintf Args((char*, int, const char*, ...));
#endif
#if !defined(HAVE_VSNPRINTF)
extern int vsnprintf Args((char*, int, const char*, va_list));
#endif
/*---------------------------------------------------------------------------
* Compiler output
* Tweaking this lets us redirect prompts, error messages, etc - but has no
* effect on output of Haskell programs (which should use hPutStr and friends).
*-------------------------------------------------------------------------*/
#if REDIRECT_OUTPUT
extern Void hugsPrintf Args((const char *, ...));
extern Void hugsPutchar Args((int));
extern Void hugsFlushStdout Args((Void));
extern Void hugsEnableOutput Args((Bool));
extern String hugsClearOutputBuffer Args((Void));
extern Void hugsFFlush Args((FILE*));
extern Void hugsFPrintf Args((FILE*, const char*, ...));
extern Void hugsPutc Args((int, FILE*));
#define Printf hugsPrintf
#define Putchar hugsPutchar
#define FlushStdout hugsFlushStdout
#define EnableOutput hugsEnableOutput
#define ClearOutputBuffer hugsClearOutputBuffer
#define FFlush hugsFFlush
#define FPrintf hugsFPrintf
#define Putc hugsPutc
#else
#define Printf printf
#define Putchar putchar
#define FlushStdout() fflush(stdout)
#define EnableOutput(f) doNothing()
#define ClearOutputBuffer() 0
#define FFlush fflush
#define FPrintf fprintf
#define Putc putc
#endif
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