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1 | /* $Header: stab.h,v 3.0 89/10/18 15:23:30 lwall Locked $ |
2 | * |
3 | * Copyright (c) 1989, Larry Wall |
4 | * |
5 | * You may distribute under the terms of the GNU General Public License |
6 | * as specified in the README file that comes with the perl 3.0 kit. |
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7 | * |
8 | * $Log: stab.h,v $ |
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9 | * Revision 3.0 89/10/18 15:23:30 lwall |
10 | * 3.0 baseline |
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11 | * |
12 | */ |
13 | |
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14 | struct stabptrs { |
15 | char stbp_magic[4]; |
16 | STR *stbp_val; /* scalar value */ |
17 | struct stio *stbp_io; /* filehandle value */ |
18 | FCMD *stbp_form; /* format value */ |
19 | ARRAY *stbp_array; /* array value */ |
20 | HASH *stbp_hash; /* associative array value */ |
21 | SUBR *stbp_sub; /* subroutine value */ |
22 | int stbp_lastexpr; /* used by nothing_in_common() */ |
23 | line_t stbp_line; /* line first declared at (for -w) */ |
24 | char stbp_flags; |
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25 | }; |
26 | |
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27 | #define stab_magic(stab) (((STBP*)(stab->str_ptr))->stbp_magic) |
28 | #define stab_val(stab) (((STBP*)(stab->str_ptr))->stbp_val) |
29 | #define stab_io(stab) (((STBP*)(stab->str_ptr))->stbp_io) |
30 | #define stab_form(stab) (((STBP*)(stab->str_ptr))->stbp_form) |
31 | #define stab_xarray(stab) (((STBP*)(stab->str_ptr))->stbp_array) |
32 | #define stab_array(stab) (((STBP*)(stab->str_ptr))->stbp_array ? \ |
33 | ((STBP*)(stab->str_ptr))->stbp_array : \ |
34 | ((STBP*)(aadd(stab)->str_ptr))->stbp_array) |
35 | #define stab_xhash(stab) (((STBP*)(stab->str_ptr))->stbp_hash) |
36 | #define stab_hash(stab) (((STBP*)(stab->str_ptr))->stbp_hash ? \ |
37 | ((STBP*)(stab->str_ptr))->stbp_hash : \ |
38 | ((STBP*)(hadd(stab)->str_ptr))->stbp_hash) |
39 | #define stab_sub(stab) (((STBP*)(stab->str_ptr))->stbp_sub) |
40 | #define stab_lastexpr(stab) (((STBP*)(stab->str_ptr))->stbp_lastexpr) |
41 | #define stab_line(stab) (((STBP*)(stab->str_ptr))->stbp_line) |
42 | #define stab_flags(stab) (((STBP*)(stab->str_ptr))->stbp_flags) |
43 | #define stab_name(stab) (stab->str_magic->str_ptr) |
44 | |
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45 | #define SF_VMAGIC 1 /* call routine to dereference STR val */ |
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46 | #define SF_MULTI 2 /* seen more than once */ |
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47 | |
48 | struct stio { |
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49 | FILE *ifp; /* ifp and ofp are normally the same */ |
50 | FILE *ofp; /* but sockets need separate streams */ |
51 | #if defined(I_DIRENT) || defined(I_SYSDIR) |
52 | DIR *dirp; /* for opendir, readdir, etc */ |
53 | #endif |
54 | long lines; /* $. */ |
55 | long page; /* $% */ |
56 | long page_len; /* $= */ |
57 | long lines_left; /* $- */ |
58 | char *top_name; /* $^ */ |
59 | STAB *top_stab; /* $^ */ |
60 | char *fmt_name; /* $~ */ |
61 | STAB *fmt_stab; /* $~ */ |
62 | short subprocess; /* -| or |- */ |
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63 | char type; |
64 | char flags; |
65 | }; |
66 | |
67 | #define IOF_ARGV 1 /* this fp iterates over ARGV */ |
68 | #define IOF_START 2 /* check for null ARGV and substitute '-' */ |
69 | #define IOF_FLUSH 4 /* this fp wants a flush after write op */ |
70 | |
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71 | struct sub { |
72 | CMD *cmd; |
73 | char *filename; |
74 | long depth; /* >= 2 indicates recursive call */ |
75 | ARRAY *tosave; |
76 | }; |
77 | |
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78 | #define Nullstab Null(STAB*) |
79 | |
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80 | #define STAB_STR(s) (tmpstab = (s), stab_flags(tmpstab) & SF_VMAGIC ? stab_str(stab_val(tmpstab)->str_magic) : stab_val(tmpstab)) |
81 | #define STAB_GET(s) (tmpstab = (s), str_get(stab_flags(tmpstab) & SF_VMAGIC ? stab_str(tmpstab->str_magic) : stab_val(tmpstab))) |
82 | #define STAB_GNUM(s) (tmpstab = (s), str_gnum(stab_flags(tmpstab) & SF_VMAGIC ? stab_str(tmpstab->str_magic) : stab_val(tmpstab))) |
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83 | |
84 | EXT STAB *tmpstab; |
85 | |
86 | EXT STAB *stab_index[128]; |
87 | |
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88 | EXT unsigned short statusvalue; |
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89 | |
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90 | EXT int delaymagic INIT(0); |
91 | #define DM_DELAY 1 |
92 | #define DM_REUID 2 |
93 | #define DM_REGID 4 |
94 | |
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95 | STAB *aadd(); |
96 | STAB *hadd(); |