error window cleanup

[unix-history] / usr / src / usr.bin / window / context.h

/*
*      @(#)context.h   3.2 83/12/07
*/

struct context {
       struct context *x_link;         /* nested contexts */
       char x_type;
       union {                         /* input info */
               struct {
                       char *X_filename;
                       FILE *X_fp;
                       short X_lineno;
                       char X_bol;
                       char X_noerrwin;
                       struct ww *X_errwin;
               } x_f;
               struct {
                       char *X_buf;
                       char *X_bufp;
               } x_b;
       } x_un;
       int x_token;                    /* holding place for token */
       struct value x_val;
       unsigned x_erred :1;            /* parser error flags */
       unsigned x_synerred :1;
       unsigned x_abort :1;
};
#define x_buf           x_un.x_b.X_buf
#define x_bufp          x_un.x_b.X_bufp
#define x_filename      x_un.x_f.X_filename
#define x_fp            x_un.x_f.X_fp
#define x_lineno        x_un.x_f.X_lineno
#define x_bol           x_un.x_f.X_bol
#define x_errwin        x_un.x_f.X_errwin
#define x_noerrwin      x_un.x_f.X_noerrwin

#define X_FILE          1
#define X_BUF           2

struct context cx;

struct context *x_alloc();