52 lines
1.5 KiB
C
52 lines
1.5 KiB
C
/* PREPROCESSOR: DEFINITION OF MACRO DESCRIPTOR */
|
|
|
|
/* The flags of the mc_flag field of the macro structure. Note that
|
|
these flags can be set simultaneously.
|
|
*/
|
|
#define NOFLAG 0 /* no special flags */
|
|
#define FUNC 01 /* function attached */
|
|
#define NOREPLACE 02 /* don't replace */
|
|
|
|
#define FORMALP 0200 /* mask for creating macro formal parameter */
|
|
|
|
/* The macro descriptor is very simple, except the fact that the
|
|
mc_text, which points to the replacement text, contains the
|
|
non-ascii characters \201, \202, etc, indicating the position of a
|
|
formal parameter in this text.
|
|
*/
|
|
struct macro {
|
|
struct macro *next;
|
|
char * mc_text; /* the replacement text */
|
|
int mc_nps; /* number of formal parameters */
|
|
int mc_length; /* length of replacement text */
|
|
int mc_count; /* # of "concurrent" invocations*/
|
|
char mc_flag; /* marking this macro */
|
|
};
|
|
|
|
|
|
/* allocation definitions of struct macro */
|
|
extern char *st_alloc();
|
|
extern struct macro *h_macro;
|
|
#ifdef DEBUG
|
|
extern int cnt_macro;
|
|
extern char *std_alloc();
|
|
#define new_macro() ((struct macro *) std_alloc((char **)&h_macro, sizeof(struct macro), 20, &cnt_macro))
|
|
#else
|
|
#define new_macro() ((struct macro *) st_alloc((char **)&h_macro, sizeof(struct macro), 20))
|
|
#endif
|
|
#define free_macro(p) st_free(p, &h_macro, sizeof(struct macro))
|
|
|
|
|
|
/* `token' numbers of keywords of command-line processor
|
|
*/
|
|
#define K_UNKNOWN 0
|
|
#define K_DEFINE 1
|
|
#define K_ELIF 2
|
|
#define K_ELSE 3
|
|
#define K_ENDIF 4
|
|
#define K_IF 5
|
|
#define K_IFDEF 6
|
|
#define K_IFNDEF 7
|
|
#define K_INCLUDE 8
|
|
#define K_LINE 9
|
|
#define K_UNDEF 10
|