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* src/state.h, src/state.c (shift_t, SHIFT_SYMBOL, SHIFT_IS_SHIFT)

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(SHIFT_IS_GOTO, SHIFT_IS_ERROR, SHIFT_DISABLE, SHIFT_IS_DISABLED)
(shifts_to): Rename as...
(transition_t, TRANSITION_SYMBOL, TRANSITION_IS_TRANSITION)
(TRANSITION_IS_GOTO, TRANSITION_IS_ERROR, TRANSITION_DISABLE)
(TRANSITION_IS_DISABLED, transitions_to): these.
This commit is contained in:
Akim Demaille
2002-06-30 17:33:37 +00:00
parent 87675353bf
commit ccaf65bc63
10 changed files with 126 additions and 114 deletions
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34
src/state.c
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@@ -35,32 +35,32 @@
| Create a new array of N shifts/gotos. |
`---------------------------------------*/
#define SHIFTS_ALLOC(Nshifts) \
(shifts_t *) xcalloc ((unsigned) (sizeof (shifts_t) \
#define TRANSITIONS_ALLOC(Nshifts) \
(transitions_t *) xcalloc ((unsigned) (sizeof (transitions_t) \
+ (Nshifts - 1) * sizeof (state_number_t)), 1)
static shifts_t *
shifts_new (int nshifts, state_number_t *shifts)
static transitions_t *
transitions_new (int num, state_number_t *the_states)
{
shifts_t *res = SHIFTS_ALLOC (nshifts);
res->nshifts = nshifts;
memcpy (res->shifts, shifts, nshifts * sizeof (shifts[0]));
transitions_t *res = TRANSITIONS_ALLOC (num);
res->num = num;
memcpy (res->states, the_states, num * sizeof (the_states[0]));
return res;
}
/*-----------------------------------------------------------------.
| Return the state such these SHIFTS contain a shift/goto to it on |
| SYMBOL. Aborts if none found. |
`-----------------------------------------------------------------*/
/*-------------------------------------------------------------------.
| Return the state such these TRANSITIONS contain a shift/goto to it |
| on SYMBOL. Aborts if none found. |
`-------------------------------------------------------------------*/
state_t *
shifts_to (shifts_t *shifts, symbol_number_t s)
transitions_to (transitions_t *shifts, symbol_number_t s)
{
int j;
for (j = 0; j < shifts->nshifts; j++)
if (SHIFT_SYMBOL (shifts, j) == s)
return states[shifts->shifts[j]];
for (j = 0; j < shifts->num; j++)
if (TRANSITION_SYMBOL (shifts, j) == s)
return states[shifts->states[j]];
abort ();
}
@@ -168,9 +168,9 @@ state_new (symbol_number_t accessing_symbol,
`--------------------------*/
void
state_shifts_set (state_t *state, int nshifts, state_number_t *shifts)
state_transitions_set (state_t *state, int nshifts, state_number_t *shifts)
{
state->shifts = shifts_new (nshifts, shifts);
state->shifts = transitions_new (nshifts, shifts);
}