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* src/state.h (SHIFT_IS_ERROR, SHIFT_IS_GOTO, SHIFT_IS_SHIFT): New.

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* src/lalr.c: Use them.
This commit is contained in:
Akim Demaille
2001-12-05 09:18:57 +00:00
parent 57339f0421
commit 825b9e4ef4
3 changed files with 58 additions and 29 deletions
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44
src/state.h
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@@ -88,6 +88,11 @@
#ifndef STATE_H_
# define STATE_H_
/*-------.
| Core. |
`-------*/
typedef struct core
{
struct core *next;
@@ -96,39 +101,63 @@ typedef struct core
short accessing_symbol;
short nitems;
short items[1];
}
core;
} core;
#define CORE_ALLOC(Nitems) \
(core *) xcalloc ((unsigned) (sizeof (core) \
+ (Nitems - 1) * sizeof (short)), 1)
/*---------.
| Shifts. |
`---------*/
typedef struct shifts
{
struct shifts *next;
short number;
short nshifts;
short shifts[1];
}
shifts;
} shifts;
#define SHIFTS_ALLOC(Nshifts) \
(shifts *) xcalloc ((unsigned) (sizeof (shifts) \
+ (Nshifts - 1) * sizeof (short)), 1)
/* Is the SHIFTS->shifts[Shift] a real shift? (as opposed to gotos.) */
#define SHIFT_IS_SHIFT(Shifts, Shift) \
(ISTOKEN (state_table[Shifts->shifts[Shift]].accessing_symbol))
/* Is the SHIFTS->shifts[Shift] a goto?. */
#define SHIFT_IS_GOTO(Shifts, Shift) \
(!SHIFT_IS_SHIFT (Shifts, Shift))
/* Is the SHIFTS->shifts[Shift] then handling of the error token?. */
#define SHIFT_IS_ERROR(Shifts, Shift) \
(state_table[Shifts->shifts[Shift]].accessing_symbol == error_token_number)
/*-------.
| Errs. |
`-------*/
typedef struct errs
{
short nerrs;
short errs[1];
}
errs;
} errs;
#define ERRS_ALLOC(Nerrs) \
(errs *) xcalloc ((unsigned) (sizeof (errs) \
+ (Nerrs - 1) * sizeof (short)), 1)
/*-------------.
| Reductions. |
`-------------*/
typedef struct reductions
{
@@ -136,8 +165,7 @@ typedef struct reductions
short number;
short nreds;
short rules[1];
}
reductions;
} reductions;
#define REDUCTIONS_ALLOC(Nreductions) \
(reductions *) xcalloc ((unsigned) (sizeof (reductions) \