/************************************************************************** * * * File: iopreds.h * * Last rev: 5/2/88 * * mods: * * comments: Input/Output C implemented predicates * * * *************************************************************************/ #ifdef SCCS static char SccsId[] = "%W% %G%"; #endif #ifndef YAPSTREAMS_H #define YAPSTREAMS_H 1 #if HAVE_SYS_TYPES_H #include #endif #if HAVE_SYS_SOCKET_H #include #endif #define YAP_ERROR NIL #define MaxStreams 64 #define EXPAND_FILENAME 0x000080 #define StdInStream 0 #define StdOutStream 1 #define StdErrStream 2 #define ALIASES_BLOCK_SIZE 8 #if _WIN32 #ifndef USE_SOCKET #define USE_SOCKET 1 #endif #define HAVE_SOCKET 1 #endif //#include "Atoms.h" //#include "Yap.h" #include /* * This file defines main data-structure for stream management, * */ #if defined(_MSC_VER) || defined(__MINGW32__) #include #endif #include /************ SWI compatible support for unicode representations ************/ typedef struct yap_io_position { int64_t byteno; /* byte-position in file */ int64_t charno; /* character position in file */ long int lineno; /* lineno in file */ long int linepos; /* position in line */ intptr_t reserved[2]; /* future extensions */ } yapIOPOS; #ifndef _PL_STREAM_H typedef struct { YAP_Atom file; /* current source file */ yapIOPOS position; /* Line, line pos, char and byte */ } yapSourceLocation; #endif #define RD_MAGIC 0xefebe128 typedef struct vlist_struct_t { struct VARSTRUCT *ve; struct vlist_struct_t *next; } vlist_t; typedef struct qq_struct_t { unsigned char *text; yapIOPOS start, mid, end; vlist_t *vlist; struct qq_struct_t *next; } qq_t; typedef struct read_data_t { unsigned char *here; /* current character */ unsigned char *base; /* base of clause */ unsigned char *end; /* end of the clause */ unsigned char *token_start; /* start of most recent read token */ int magic; /* RD_MAGIC */ struct stream_desc *stream; FILE *f; /* file. of known */ YAP_Term position; /* Line, line pos, char and byte */ void *posp; /* position pointer */ size_t posi; /* position number */ YAP_Term subtpos; /* Report Subterm positions */ bool cycles; /* Re-establish cycles */ yapSourceLocation start_of_term; /* Position of start of term */ struct mod_entry *module; /* Current source module */ unsigned int flags; /* Module syntax flags */ int styleCheck; /* style-checking mask */ bool backquoted_string; /* Read `hello` as string */ int *char_conversion_table; /* active conversion table */ YAP_Atom on_error; /* Handling of syntax errors */ int has_exception; /* exception is raised */ YAP_Term exception; /* raised exception */ YAP_Term variables; /* report variables */ YAP_Term singles; /* Report singleton variables */ YAP_Term varnames; /* Report variables+names */ int strictness; /* Strictness level */ #ifdef O_QUASIQUOTATIONS YAP_Term quasi_quotations; /* User option quasi_quotations(QQ) */ YAP_Term qq; /* Quasi quoted list */ YAP_Term qq_tail; /* Tail of the quoted stuff */ #endif YAP_Term comments; /* Report comments */ } read_data, *ReadData; #if __APPLE__ #include "fmemopen.h" #define HAVE_FMEMOPEN 1 #define HAVE_OPEN_MEMSTREAM 1 FILE *open_memstream(char **buf, size_t *len); #endif #if __ANDROID__ #undef HAVE_FMEMOPEN #undef HAVE_OPEN_MEMSTREAM #endif #if HAVE_FMEMOPEN #define MAY_READ 1 #endif #if HAVE_OPEN_MEMSTREAM #define MAY_READ 1 #define MAY_WRITE 1 #endif #if _WIN32 #undef MAY_WRITE #undef MAY_READ #endif typedef struct mem_desc { char *buf; /* where the file is being read from/written to */ int src; /* where the space comes from, 0 code space, 1 malloc */ YAP_Int max_size; /* maximum buffer size (may be changed dynamically) */ YAP_UInt pos; /* cursor */ volatile void *error_handler; } memHandle; #if HAVE_SOCKET typedef enum { /* in YAP, sockets may be in one of 4 possible status */ new_socket, server_socket, client_socket, server_session_socket, closed_socket } socket_info; typedef enum { /* we accept two domains for the moment, IPV6 may follow */ af_inet, /* IPV4 */ af_unix /* or AF_FILE */ } socket_domain; #endif #define Quote_illegal_f 0x01 #define Ignore_ops_f 0x02 #define Handle_vars_f 0x04 #define Use_portray_f 0x08 #define To_heap_f 0x10 #define Unfold_cyclics_f 0x20 #define Use_SWI_Stream_f 0x40 #define BackQuote_String_f 0x80 #define AttVar_None_f 0x100 #define AttVar_Dots_f 0x200 #define AttVar_Portray_f 0x400 #define Blob_Portray_f 0x800 #define No_Escapes_f 0x1000 #define No_Brace_Terms_f 0x2000 #define Fullstop_f 0x4000 #define New_Line_f 0x8000 typedef struct stream_desc { YAP_Atom name; YAP_Term user_name; FILE *file; // useful in memory streams char *nbuf; size_t nsize; union { struct { #define PLGETC_BUF_SIZE 4096 unsigned char *buf, *ptr; int left; } file; memHandle mem_string; struct { int fd; } pipe; #if HAVE_SOCKET struct { socket_domain domain; socket_info flags; int fd; } socket; #endif struct { const unsigned char *buf, *ptr; } irl; } u; YAP_Int charcount, linecount, linepos; stream_flags_t status; #if defined(YAPOR) || defined(THREADS) lockvar streamlock; /* protect stream access */ #endif int (*stream_putc)( int, int); /** function the stream uses for writing a single octet */ int (*stream_wputc)( int, wchar_t); /** function the stream uses for writing a character */ int (*stream_getc)(int); /** function the stream uses for reading an octet. */ int (*stream_wgetc)( int); /** function the stream uses for reading a character. */ struct vfs *vfs; /** stream belongs to a space */ void *vfs_handle; /** direct handle to stream in that space. */ int (*stream_wgetc_for_read)( int); /* function the stream uses for parser. It may be different from above if the ISO character conversion is on */ encoding_t encoding; /** current encoding for stream */ } StreamDesc; #endif