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yap-6.3/packages/PLStream/pl-incl.h
2010-06-17 00:33:57 +01:00

706 lines
22 KiB
C
Executable File

#include "config.h"
#define PL_KERNEL 1
#ifdef __MINGW32__
#define O_XOS 1
#endif
#include <SWI-Prolog.h>
typedef int bool;
/* atom_t macro layer */
#define NULL_ATOM ((atom_t)0)
#if __YAP_PROLOG__
#include "dswiatoms.h"
#else
#include "atoms.h"
#endif
#if HAVE_STRING_H
#include <string.h>
#endif
#define COMMON(X) X
#ifdef HAVE_LOCALE_H
#include <locale.h>
#endif
#include <setjmp.h>
#include <assert.h>
#if HAVE_SYS_PARAM_H
#include <sys/param.h> //MAXPATHLEN
#endif
#if __YAP_PROLOG__
#include "pl-yap.h"
#endif
/********************************
* UTILITIES *
*********************************/
#define ROUND(p, n) ((((p) + (n) - 1) & ~((n) - 1)))
/********************************
* HASH TABLES *
*********************************/
#include "pl-table.h"
#include "SWI-Stream.h"
#include "pl-os.h"
#include "pl-error.h"
/********************************
* BUFFERS *
*********************************/
#include "pl-buffer.h"
/*******************************
* OPTION LISTS *
*******************************/
#include "pl-opts.h"
/*******************************
* LIST BUILDING *
*******************************/
#include "pl-privitf.h"
// numbers
typedef enum
{ V_INTEGER, /* integer (64-bit) value */
#ifdef O_GMP
V_MPZ, /* mpz_t */
V_MPQ, /* mpq_t */
#endif
V_REAL /* Floating point number (double) */
} numtype;
typedef struct
{ numtype type; /* type of number */
union { double f; /* value as real */
int64_t i; /* value as integer */
word w[WORDS_PER_DOUBLE]; /* for packing/unpacking the double */
#ifdef O_GMP
mpz_t mpz; /* GMP integer */
mpq_t mpq; /* GMP rational */
#endif
} value;
} number, *Number;
typedef enum
{ CLN_NORMAL = 0, /* Normal mode */
CLN_ACTIVE, /* Started cleanup */
CLN_FOREIGN, /* Foreign hooks */
CLN_PROLOG, /* Prolog hooks */
CLN_SHARED, /* Unload shared objects */
CLN_DATA /* Remaining data */
} cleanup_status;
typedef struct tempfile * TempFile; /* pl-os.c */
typedef struct canonical_dir * CanonicalDir; /* pl-os.c */
typedef struct on_halt * OnHalt; /* pl-os.c */
typedef struct extension_cell * ExtensionCell; /* pl-ext.c */
typedef struct initialise_handle * InitialiseHandle;
/* The GD global variable */
typedef struct {
int io_initialised;
cleanup_status cleaning; /* Inside PL_cleanup() */
struct
{ Table table; /* global (read-only) features */
} prolog_flag;
struct
{ Table tmp_files; /* Known temporary files */
CanonicalDir _canonical_dirlist;
char * myhome; /* expansion of ~ */
char * fred; /* last expanded ~user */
char * fredshome; /* home of fred */
OnHalt on_halt_list; /* list of onhalt hooks */
int halting; /* process is shutting down */
int gui_app; /* Win32: Application is a gui app */
IOFUNCTIONS iofunctions; /* initial IO functions */
IOFUNCTIONS org_terminal; /* IO+Prolog terminal functions */
IOFUNCTIONS rl_functions; /* IO+Terminal+Readline functions */
} os;
struct
{ size_t heap; /* heap in use */
size_t atoms; /* No. of atoms defined */
size_t atomspace; /* # bytes used to store atoms */
size_t stack_space; /* # bytes on stacks */
#ifdef O_ATOMGC
size_t atomspacefreed; /* Freed atom-space */
#endif
int functors; /* No. of functors defined */
int predicates; /* No. of predicates defined */
int modules; /* No. of modules in the system */
intptr_t codes; /* No. of byte codes generated */
#ifdef O_PLMT
int threads_created; /* # threads created */
int threads_finished; /* # finished threads */
double thread_cputime; /* Total CPU time of threads */
#endif
} statistics;
struct
{ atom_t * array; /* index --> atom */
size_t count; /* elements in array */
atom_t *for_code[256]; /* code --> one-char-atom */
} atoms;
struct
{ ExtensionCell _ext_head; /* head of registered extensions */
ExtensionCell _ext_tail; /* tail of this chain */
InitialiseHandle initialise_head; /* PL_initialise_hook() */
InitialiseHandle initialise_tail;
PL_dispatch_hook_t dispatch_events; /* PL_dispatch_hook() */
int _loaded; /* system extensions are loaded */
} foreign;
} gds_t;
extern gds_t gds;
#define GD (&gds)
#define GLOBAL_LD (&gds)
typedef struct
{ unsigned long flags; /* Fast access to some boolean Prolog flags */
} pl_features_t;
#define truePrologFlag(flag) true(&LD->prolog_flag.mask, flag)
#define setPrologFlagMask(flag) set(&LD->prolog_flag.mask, flag)
#define clearPrologFlagMask(flag) clear(&LD->prolog_flag.mask, flag)
// LOCAL variables (heap will get this form LOCAL
#define FT_ATOM 0 /* atom feature */
#define FT_BOOL 1 /* boolean feature (true, false) */
#define FT_INTEGER 2 /* integer feature */
#define FT_TERM 3 /* term feature */
#define FT_INT64 4 /* passed as int64_t */
#define FT_MASK 0x0f /* mask to get type */
#define FF_READONLY 0x10 /* feature is read-only */
#define FF_KEEP 0x20 /* keep value it already set */
#define PLFLAG_CHARESCAPE 0x000001 /* handle \ in atoms */
#define PLFLAG_GC 0x000002 /* do GC */
#define PLFLAG_TRACE_GC 0x000004 /* verbose gc */
#define PLFLAG_TTY_CONTROL 0x000008 /* allow for tty control */
#define PLFLAG_READLINE 0x000010 /* readline is loaded */
#define PLFLAG_DEBUG_ON_ERROR 0x000020 /* start tracer on error */
#define PLFLAG_REPORT_ERROR 0x000040 /* print error message */
#define PLFLAG_FILE_CASE 0x000080 /* file names are case sensitive */
#define PLFLAG_FILE_CASE_PRESERVING 0x000100 /* case preserving file names */
#define PLFLAG_DOS_FILE_NAMES 0x000200 /* dos (8+3) file names */
#define ALLOW_VARNAME_FUNCTOR 0x000400 /* Read Foo(x) as 'Foo'(x) */
#define PLFLAG_ISO 0x000800 /* Strict ISO compliance */
#define PLFLAG_OPTIMISE 0x001000 /* -O: optimised compilation */
#define PLFLAG_FILEVARS 0x002000 /* Expand $var and ~ in filename */
#define PLFLAG_AUTOLOAD 0x004000 /* do autoloading */
#define PLFLAG_CHARCONVERSION 0x008000 /* do character-conversion */
#define PLFLAG_LASTCALL 0x010000 /* Last call optimization enabled? */
#define PLFLAG_EX_ABORT 0x020000 /* abort with exception */
#define PLFLAG_BACKQUOTED_STRING 0x040000 /* `a string` */
#define PLFLAG_SIGNALS 0x080000 /* Handle signals */
#define PLFLAG_DEBUGINFO 0x100000 /* generate debug info */
#define PLFLAG_FILEERRORS 0x200000 /* Edinburgh file errors */
typedef enum
{ OCCURS_CHECK_FALSE = 0,
OCCURS_CHECK_TRUE,
OCCURS_CHECK_ERROR
} occurs_check_t;
typedef struct
{ atom_t file; /* current source file */
int line; /* current line */
int linepos; /* position in the line */
int64_t character; /* current character location */
} source_location;
typedef struct exception_frame /* PL_throw exception environments */
{ struct exception_frame *parent; /* parent frame */
jmp_buf exception_jmp_env; /* longjmp environment */
} exception_frame;
#define EXCEPTION_GUARDED(code, cleanup) \
{ exception_frame __throw_env; \
__throw_env.parent = LD->exception.throw_environment; \
if ( setjmp(__throw_env.exception_jmp_env) != 0 ) \
{ LD->exception.throw_environment = __throw_env.parent; \
cleanup; \
} else \
{ LD->exception.throw_environment = &__throw_env; \
code; \
LD->exception.throw_environment = __throw_env.parent; \
} \
}
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
At times an abort is not allowed because the heap is inconsistent the
programmer should call startCritical to start such a code region and
endCritical to end it.
MT/TBD: how to handle this gracefully in the multi-threading case. Does
it mean anything?
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
/* vsc: needs defining */
#define startCritical
#define endCritical
/* The LD macro layer */
typedef struct PL_local_data {
struct /* Local IO stuff */
{ IOSTREAM *streams[6]; /* handles for standard streams */
struct input_context *input_stack; /* maintain input stream info */
struct output_context *output_stack; /* maintain output stream info */
} IO;
struct
{ Table table; /* Feature table */
pl_features_t mask; /* Masked access to booleans */
int write_attributes; /* how to write attvars? */
occurs_check_t occurs_check; /* Unify and occurs check */
} feature;
source_location read_source; /* file, line, char of last term */
struct
{ int active; /* doing pipe I/O */
jmp_buf context; /* context of longjmp() */
} pipe;
struct
{ atom_t current; /* current global prompt */
atom_t first; /* how to prompt first line */
int first_used; /* did we do the first line? */
int next; /* prompt on next read operation */
} prompt;
struct
{ Table table; /* Feature table */
pl_features_t mask; /* Masked access to booleans */
int write_attributes; /* how to write attvars? */
occurs_check_t occurs_check; /* Unify and occurs check */
} prolog_flag;
void * glob_info; /* pl-glob.c */
IOENC encoding; /* default I/O encoding */
struct
{ char * _CWDdir;
size_t _CWDlen;
#ifdef __BEOS__
status_t dl_error; /* dlopen() emulation in pl-beos.c */
#endif
int rand_initialised; /* have we initialised random? */
} os;
struct
{ int64_t pending; /* PL_raise() pending signals */
int current; /* currently processing signal */
int is_sync; /* current signal is synchronous */
record_t exception; /* Pending exception from signal */
#ifdef O_PLMT
simpleMutex sig_lock; /* lock delivery and processing */
#endif
} signal;
int critical; /* heap is being modified */
struct
{ term_t term; /* exception term */
term_t bin; /* temporary handle for exception */
term_t printed; /* already printed exception */
term_t tmp; /* tmp for errors */
term_t pending; /* used by the debugger */
int in_hook; /* inside exception_hook() */
int processing; /* processing an exception */
exception_frame *throw_environment; /* PL_throw() environments */
} exception;
const char *float_format; /* floating point format */
buffer discardable_buffer; /* PL_*() character buffers */
buffer buffer_ring[BUFFER_RING_SIZE];
int current_buffer_id;
} PL_local_data_t;
#define usedStack(D) 0
#define features (LD->feature.mask)
extern PL_local_data_t lds;
#define exception_term (LD->exception.term)
// THIS HAS TO BE ABSTRACTED
#define LD (&lds)
#define LOCAL_LD (&lds)
#define ARG_LD
#define GET_LD
#define PRED_LD
#define PASS_LD
#define Suser_input (LD->IO.streams[0])
#define Suser_output (LD->IO.streams[1])
#define Suser_error (LD->IO.streams[2])
#define Scurin (LD->IO.streams[3])
#define Scurout (LD->IO.streams[4])
#define Sprotocol (LD->IO.streams[5])
#define Sdin Suser_input /* not used for now */
#define Sdout Suser_output
#define source_line_no (LD->read_source.line)
#define source_file_name (LD->read_source.file)
/* Support PL_LOCK in the interface */
#define PL_LOCK(X)
#define PL_UNLOCK(X)
#ifndef TRUE
#define TRUE 1
#define FALSE 0
#endif
#define succeed return TRUE
#define fail return FALSE
#define TRY(goal) if ((goal) == FALSE) fail
extern int fileerrors;
extern int ttymode;
#define CHARESCAPE_FEATURE 0x00001 /* handle \ in atoms */
#define GC_FEATURE 0x00002 /* do GC */
#define TRACE_GC_FEATURE 0x00004 /* verbose gc */
#define TTY_CONTROL_FEATURE 0x00008 /* allow for tty control */
#define READLINE_FEATURE 0x00010 /* readline is loaded */
#define DEBUG_ON_ERROR_FEATURE 0x00020 /* start tracer on error */
#define REPORT_ERROR_FEATURE 0x00040 /* print error message */
#define FILE_CASE_FEATURE 0x00080 /* file names are case sensitive */
#define FILE_CASE_PRESERVING_FEATURE 0x0100 /* case preserving file names */
#define DOS_FILE_NAMES_FEATURE 0x00200 /* dos (8+3) file names */
#define ISO_FEATURE 0x00800 /* Strict ISO compliance */
#define OPTIMISE_FEATURE 0x01000 /* -O: optimised compilation */
#define FILEVARS_FEATURE 0x02000 /* Expand $var and ~ in filename */
#define AUTOLOAD_FEATURE 0x04000 /* do autoloading */
#define CHARCONVERSION_FEATURE 0x08000 /* do character-conversion */
#define LASTCALL_FEATURE 0x10000 /* Last call optimization enabled? */
#define EX_ABORT_FEATURE 0x20000 /* abort with exception */
#define BACKQUOTED_STRING_FEATURE 0x40000 /* `a string` */
#define SIGNALS_FEATURE 0x80000 /* Handle signals */
#define DEBUGINFO_FEATURE 0x100000 /* generate debug info */
int defFeature(const char *c, int f, ...);
int trueFeature(int f);
/*******************************
* STREAM I/O *
*******************************/
#define REDIR_MAGIC 0x23a9bef3
typedef struct redir_context
{ int magic; /* REDIR_MAGIC */
IOSTREAM *stream; /* temporary output */
int is_stream; /* redirect to stream */
int redirected; /* output is redirected */
term_t term; /* redirect target */
int out_format; /* output type */
int out_arity; /* 2 for difference-list versions */
size_t size; /* size of I/O buffer */
char *data; /* data written */
char buffer[1024]; /* fast temporary buffer */
} redir_context;
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Defining built-in predicates using the new interface
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
#define EOS '\0'
#define ESC ((char) 27)
#define streq(s, q) ((strcmp((s), (q)) == 0))
#define CHAR_MODE 0 /* See PL_unify_char() */
#define CODE_MODE 1
#define BYTE_MODE 2
/* string stuff */
/*******************************
* STRING SUPPORT *
*******************************/
char * store_string(const char *s);
void remove_string(char *s);
/* from foreign interface */
/*******************************
* FILENAME SUPPORT *
*******************************/
#define PL_FILE_ABSOLUTE 0x01 /* return absolute path */
#define PL_FILE_OSPATH 0x02 /* return path in OS notation */
#define PL_FILE_SEARCH 0x04 /* use file_search_path */
#define PL_FILE_EXIST 0x08 /* demand file to exist */
#define PL_FILE_READ 0x10 /* demand read-access */
#define PL_FILE_WRITE 0x20 /* demand write-access */
#define PL_FILE_EXECUTE 0x40 /* demand execute-access */
#define PL_FILE_NOERRORS 0x80 /* do not raise exceptions */
#define PL_FA_ISO (0x20) /* Internal: ISO core predicate */
/********************************
* READ WARNINGS *
*********************************/
#define ReadingSource (source_line_no > 0 && \
source_file_name != NULL_ATOM)
#include <pl-text.h>
typedef double real;
#define true(s, a) ((s)->flags & (a))
#define false(s, a) (!true((s), (a)))
#define set(s, a) ((s)->flags |= (a))
#define clear(s, a) ((s)->flags &= ~(a))
#define DEBUG(LEVEL, COMMAND)
#define forwards static /* forwards function declarations */
/* uxnt package interface */
#if defined(__YAP_PROLOG__) && defined(__MINGW32__)
#define O_XOS 1
#define _XOS_ISFILE 0x01
#define _XOS_ISDIR 0x02
#define _XOS_FILE 0x0001 /* is a file */
#define _XOS_DIR 0x0002 /* is a directory */
#define XOS_DOWNCASE 0x01 /* _xos_canonical_filename() */
#ifndef __WINDOWS__
#define __WINDOWS__ 1
#endif
#endif
extern int PL_unify_char(term_t chr, int c, int how);
extern int PL_get_char(term_t chr, int *c, int eof);
extern int PL_get_text(term_t l, PL_chars_t *text, int flags);
extern void PL_cleanup_fork(void);
extern int PL_rethrow(void);
extern void PL_get_number(term_t l, number *n);
extern int PL_write_term(IOSTREAM *s, term_t term, int precedence, int flags);
extern int PL_unify_atomic(term_t t, PL_atomic_t a);
#define _PL_get_arg(X,Y,Z) PL_get_arg(X,Y,Z)
#define _PL_unify_atomic PL_unify_atomic
extern IOSTREAM ** /* provide access to Suser_input, */
_PL_streams(void); /* Suser_output and Suser_error */
#define PL_get_text__LD PL_get_text
#define getInputStream__LD getInputStream
extern int get_atom_text(atom_t atom, PL_chars_t *text);
extern int get_string_text(word w, PL_chars_t *text);
extern char *format_float(double f, char *buf, const char *format);
/**** stuff from pl-ctype.c ****/
extern IOENC initEncoding(void);
/**** stuff from pl-error.c ****/
extern int PL_get_bool_ex(term_t t, int *i);
extern int PL_get_nchars_ex(term_t t, size_t *len, char **s, unsigned int flags);
extern int PL_get_chars_ex(term_t t, char **s, unsigned int flags);
extern int PL_get_atom_ex(term_t t, atom_t *a);
extern int PL_get_integer_ex(term_t t, int *i);
extern int PL_get_long_ex(term_t t, long *i);
extern int PL_get_int64_ex(term_t t, int64_t *i);
extern int PL_get_intptr_ex(term_t t, intptr_t *i);
extern int PL_get_bool_ex(term_t t, int *i);
extern int PL_get_float_ex(term_t t, double *f);
extern int PL_get_char_ex(term_t t, int *p, int eof);
extern int PL_unify_list_ex(term_t l, term_t h, term_t t);
extern int PL_unify_nil_ex(term_t l);
extern int PL_get_list_ex(term_t l, term_t h, term_t t);
extern int PL_get_nil_ex(term_t l);
extern int PL_get_module_ex(term_t name, module_t *m);
extern int PL_unify_bool_ex(term_t t, bool val);
extern int PL_unify_bool_ex(term_t t, bool val);
extern int PL_get_bool_ex(term_t t, int *i);
extern int PL_get_integer_ex(term_t t, int *i);
/**** stuff from pl-file.c ****/
extern void initIO(void);
extern void dieIO(void);
extern void protocol(const char *str, size_t n);
extern bool readLine(IOSTREAM *in, IOSTREAM *out, char *buffer);
extern bool tellString(char **s, size_t *size, IOENC enc);
extern bool tellString(char **s, size_t *size, IOENC enc);
extern bool toldString(void);
extern int setupOutputRedirect(term_t to, redir_context *ctx, int redir);
extern void discardOutputRedirect(redir_context *ctx);
extern int closeOutputRedirect(redir_context *ctx);
extern IOENC atom_to_encoding(atom_t);
void closeFiles(int);
atom_t PrologPrompt(void);
word pl_current_input(term_t);
word pl_current_output(term_t);
word pl_exists_file(term_t name);
char *DirName(const char *f, char *dir);
void outOfCore(void);
word pl_noprotocol(void);
IOSTREAM *PL_current_input(void);
IOSTREAM *PL_current_output(void);
int reportStreamError(IOSTREAM *s);
PL_EXPORT(int) PL_unify_stream(term_t t, IOSTREAM *s);
PL_EXPORT(int) PL_unify_stream_or_alias(term_t t, IOSTREAM *s);
PL_EXPORT(int) PL_get_stream_handle(term_t t, IOSTREAM **s);
PL_EXPORT(void) PL_write_prompt(int);
PL_EXPORT(int) PL_release_stream(IOSTREAM *s);
/**** stuff from pl-error.c ****/
extern void outOfCore(void);
extern void fatalError(const char *fm, ...);
extern void printMessage(int type, ...);
extern int callProlog(void * module, term_t goal, int flags, term_t *ex);
extern word notImplemented(char *name, int arity);
/**** stuff from pl-ctype.c ****/
extern void initCharTypes(void);
/**** stuff from pl-glob.c ****/
extern void initGlob(void);
/**** stuff from pl-os.c ****/
extern void cleanupOs(void);
extern void PL_clock_wait_ticks(long waited);
extern void setOSFeatures(void);
extern uintptr_t FreeMemory(void);
extern uint64_t _PL_Random(void);
extern void RemoveTemporaryFiles(void);
extern int Pause(real t);
char *findExecutable(const char *av0, char *buffer);
void setOSPrologFlags(void);
void setRandom(unsigned int *seedp);
char *canoniseFileName(char *path);
char *canonisePath(char *path);
void PL_changed_cwd(void);
struct tm *LocalTime(long *t, struct tm *r);
size_t getenv3(const char *name, char *buf, size_t len);
int Setenv(char *name, char *value);
int Unsetenv(char *name);
int System(char *cmd);
bool expandVars(const char *pattern, char *expanded, int maxlen);
/**** stuff from pl-utils.c ****/
bool stripostfix(char *s, char *e);
/**** SWI stuff (emulated in pl-yap.c) ****/
extern int writeAtomToStream(IOSTREAM *so, atom_t at);
extern int valueExpression(term_t t, Number r ARG_LD);
extern word lookupAtom(const char *s, size_t len);
extern atom_t lookupUCSAtom(const pl_wchar_t *s, size_t len);
extern int toIntegerNumber(Number n, int flags);
extern int get_atom_ptr_text(Atom a, PL_chars_t *text);
extern int warning(const char *fm, ...);
/**** stuff from pl-files.c ****/
void initFiles(void);
int RemoveFile(const char *path);
int PL_get_file_name(term_t n, char **namep, int flags);
/* empty stub */
void setPrologFlag(const char *name, int flags, ...);
void PL_set_prolog_flag(const char *name, int flags, ...);
static inline word
setBoolean(int *flag, term_t old, term_t new)
{ if ( !PL_unify_bool_ex(old, *flag) ||
!PL_get_bool_ex(new, flag) )
fail;
succeed;
}
static inline word
setInteger(int *flag, term_t old, term_t new)
{ if ( !PL_unify_integer(old, *flag) ||
!PL_get_integer_ex(new, flag) )
fail;
succeed;
}
#if defined(__SWI_PROLOG__)
static inline word
INIT_SEQ_CODES(size_t n)
{
return allocGlobal(1+(n)*3); /* TBD: shift */
}
static inline word
EXTEND_SEQ_CODES(word gstore, int c) {
*gstore = consPtr(&gstore[1], TAG_COMPOUND|STG_GLOBAL);
gstore++;
*gstore++ = FUNCTOR_dot2;
*gstore++ = consInt(c);
return gstore;
}
static inline int
CLOSE_SEQ_OF_CODES(word gstore, word lp, word A2, word A3)) {
setVar(*gstore);
gTop = gstore+1;
a = valTermRef(A2);
deRef(a);
if ( !unify_ptrs(a, lp PASS_LD) )
return FALSE;
a = valTermRef(A3);
deRef(a);
if ( !unify_ptrs(a, gstore PASS_LD) )
return FALSE;
return TRUE;
}
#else
#endif