projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 1fb887dd | 1 | /* |
| a40a2f9a | 2 | * @(#)context.h 3.3 84/01/13 |
| 1fb887dd EW |
3 | */ |
| 4 | ||
| 5 | struct context { | |
| 6 | struct context *x_link; /* nested contexts */ | |
| a40a2f9a EW |
7 | char x_type; /* tag for union */ |
| 8 | union { | |
| 9 | struct { /* input is a file */ | |
| 10 | char *X_filename; /* input file name */ | |
| 11 | FILE *X_fp; /* input stream */ | |
| 12 | short X_lineno; /* current line number */ | |
| 13 | char X_bol; /* at beginning of line */ | |
| 14 | char X_noerr; /* don't report errors */ | |
| 15 | struct ww *X_errwin; /* error window */ | |
| 1fb887dd | 16 | } x_f; |
| a40a2f9a EW |
17 | struct { /* input is a buffer */ |
| 18 | char *X_buf; /* input buffer */ | |
| 19 | char *X_bufp; /* current position in buf */ | |
| 1fb887dd EW |
20 | } x_b; |
| 21 | } x_un; | |
| a40a2f9a EW |
22 | /* holding place for current token */ |
| 23 | int x_token; /* the token */ | |
| 24 | struct value x_val; /* values associated with token */ | |
| 25 | /* parser error flags */ | |
| 26 | unsigned x_erred :1; /* had an error */ | |
| 27 | unsigned x_synerred :1; /* had syntax error */ | |
| 28 | unsigned x_abort :1; /* fatal error */ | |
| 1fb887dd EW |
29 | }; |
| 30 | #define x_buf x_un.x_b.X_buf | |
| 31 | #define x_bufp x_un.x_b.X_bufp | |
| 32 | #define x_filename x_un.x_f.X_filename | |
| 33 | #define x_fp x_un.x_f.X_fp | |
| 34 | #define x_lineno x_un.x_f.X_lineno | |
| 1fb887dd EW |
35 | #define x_bol x_un.x_f.X_bol |
| 36 | #define x_errwin x_un.x_f.X_errwin | |
| a40a2f9a | 37 | #define x_noerr x_un.x_f.X_noerr |
| 1fb887dd | 38 | |
| a40a2f9a EW |
39 | /* x_type values, 0 is reserved */ |
| 40 | #define X_FILE 1 /* input is a file */ | |
| 41 | #define X_BUF 2 /* input is a buffer */ | |
| 1fb887dd | 42 | |
| a40a2f9a | 43 | struct context cx; /* the current context */ |