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cex: style changes in parse-simulation

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* src/parse-simulation.c: Formatting changes.
(parse_state_list_new): New.
Use it.
This commit is contained in:
Akim Demaille
2020-05-18 08:00:37 +02:00
parent 9a33fb9317
commit fc39ccab6b
1 changed files with 26 additions and 30 deletions
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56
src/parse-simulation.c
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@@ -37,7 +37,6 @@ typedef struct
size_t total_size;
} ps_chunk;
struct parse_state;
typedef struct parse_state
{
// path of state-items the parser has traversed
@@ -86,11 +85,11 @@ static int frees = 0;
static parse_state *
empty_parse_state (void)
{
parse_state *res = xcalloc (1, sizeof (parse_state));
res->state_items.contents = gl_list_create_empty (GL_LINKED_LIST, NULL,
NULL, NULL, true);
res->derivs.contents = gl_list_create_empty (GL_LINKED_LIST, NULL,
NULL, NULL, true);
parse_state *res = xcalloc (1, sizeof *res);
res->state_items.contents
= gl_list_create_empty (GL_LINKED_LIST, NULL, NULL, NULL, true);
res->derivs.contents
= gl_list_create_empty (GL_LINKED_LIST, NULL, NULL, NULL, true);
++allocs;
return res;
}
@@ -109,10 +108,10 @@ copy_parse_state (bool prepend, parse_state *parent)
{
parse_state *res = xmalloc (sizeof *res);
memcpy (res, parent, sizeof *res);
res->state_items.contents = gl_list_create_empty (GL_LINKED_LIST, NULL,
NULL, NULL, true);
res->derivs.contents = gl_list_create_empty (GL_LINKED_LIST, NULL,
NULL, NULL, true);
res->state_items.contents
= gl_list_create_empty (GL_LINKED_LIST, NULL, NULL, NULL, true);
res->derivs.contents
= gl_list_create_empty (GL_LINKED_LIST, NULL, NULL, NULL, true);
res->parent = parent;
res->prepend = prepend;
res->reference_count = 0;
@@ -216,8 +215,9 @@ parse_state_comparator (const parse_state *ps1, const parse_state *ps2)
{
const ps_chunk *sis1 = &ps1->state_items;
const ps_chunk *sis2 = &ps2->state_items;
return sis1->head_elt == sis2->head_elt &&
sis1->tail_elt == sis2->tail_elt && sis1->total_size == sis2->total_size;
return sis1->head_elt == sis2->head_elt
&& sis1->tail_elt == sis2->tail_elt
&& sis1->total_size == sis2->total_size;
}
@@ -273,6 +273,14 @@ list_flatten_and_split (gl_list_t *list, gl_list_t *rets, int split, int n)
}
}
static gl_list_t
parse_state_list_new (void)
{
return gl_list_create_empty (GL_LINKED_LIST, NULL, NULL,
(gl_listelement_dispose_fn)free_parse_state,
true);
}
// Emulates a reduction on a parse state by popping some amount of
// derivations and state_items off of the parse_state and returning
// the result in ret. Returns the derivation of what's popped.
@@ -283,7 +291,7 @@ parser_pop (parse_state *ps, int deriv_index,
// prepend sis, append sis, prepend derivs, append derivs
gl_list_t chunks[4];
for (int i = 0; i < 4; ++i)
chunks[i] = gl_list_create_empty (GL_LINKED_LIST, NULL, NULL, NULL, 1);
chunks[i] = gl_list_create_empty (GL_LINKED_LIST, NULL, NULL, NULL, true);
for (parse_state *pn = ps; pn != NULL; pn = pn->parent)
{
if (pn->prepend)
@@ -298,7 +306,7 @@ parser_pop (parse_state *ps, int deriv_index,
}
}
gl_list_t popped_derivs =
gl_list_create_empty (GL_LINKED_LIST, NULL, NULL, NULL, 1);
gl_list_create_empty (GL_LINKED_LIST, NULL, NULL, NULL, true);
gl_list_t ret_chunks[4] = { ret->state_items.contents, NULL,
ret->derivs.contents, popped_derivs
};
@@ -385,10 +393,7 @@ simulate_transition (parse_state *ps)
symbol_number sym = item_number_as_symbol_number (*si->item);
// Transition on the same next symbol, taking nullable
// symbols into account.
gl_list_t result =
gl_list_create_empty (GL_LINKED_LIST, NULL, NULL,
(gl_listelement_dispose_fn)free_parse_state,
true);
gl_list_t result = parse_state_list_new ();
state_item_number si_next = si_trans[si - state_items];
// check for disabled transition, shouldn't happen
// as any state_items that lead to these should be
@@ -427,10 +432,7 @@ compatible (symbol_number sym1, symbol_number sym2)
gl_list_t
simulate_production (parse_state *ps, symbol_number compat_sym)
{
gl_list_t result =
gl_list_create_empty (GL_LINKED_LIST, NULL, NULL,
(gl_listelement_dispose_fn)free_parse_state,
true);
gl_list_t result = parse_state_list_new ();
const state_item *si = parse_state_tail (ps);
bitset prod = si_prods_lookup (si - state_items);
if (prod)
@@ -463,10 +465,7 @@ simulate_production (parse_state *ps, symbol_number compat_sym)
gl_list_t
simulate_reduction (parse_state *ps, int rule_len, bitset symbol_set)
{
gl_list_t result =
gl_list_create_empty (GL_LINKED_LIST, NULL, NULL,
(gl_listelement_dispose_fn)free_parse_state,
true);
gl_list_t result = parse_state_list_new ();
int s_size = ps->state_items.total_size;
int d_size = ps->derivs.total_size;
@@ -524,10 +523,7 @@ simulate_reduction (parse_state *ps, int rule_len, bitset symbol_set)
gl_list_t
parser_prepend (parse_state *ps)
{
gl_list_t result = gl_list_create_empty (GL_LINKED_LIST, NULL, NULL,
(gl_listelement_dispose_fn)
free_parse_state,
true);
gl_list_t result = parse_state_list_new ();
const state_item *head = ps->state_items.head_elt;
bitset prev = si_revs[head - state_items];
symbol_number prepend_sym =