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This commit is contained in:
Maieul BOYER 2024-08-31 15:52:24 +00:00
parent 454c9beda9
commit 749fdf627f
1 changed files with 375 additions and 293 deletions
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488
parser/src/stack.c
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@ -6,16 +6,16 @@
/* By: maiboyer <maiboyer@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2024/08/31 15:22:58 by maiboyer #+# #+# */
/* Updated: 2024/08/31 15:35:03 by maiboyer ### ########.fr */
/* Updated: 2024/08/31 15:51:15 by maiboyer ### ########.fr */
/* */
/* ************************************************************************** */
#include "parser/stack.h"
#include "me/mem/mem.h"
#include "me/types.h"
#include "parser/array.h"
#include "parser/language.h"
#include "parser/length.h"
#include "parser/stack.h"
#include "parser/subtree.h"
#include <assert.h>
#include <stdio.h>
@ -32,7 +32,8 @@ typedef struct s_stack_node t_stack_node;
typedef struct s_summarize_stack_session t_summarize_stack_session;
typedef t_u32 t_stack_action;
typedef t_stack_action (*t_stack_callback)(void *, const t_stack_iterator *);
typedef t_stack_action (*t_stack_callback)(void *,
const t_stack_iterator *);
struct s_stack_link
{
@ -110,30 +111,30 @@ static void stack_node_retain(t_stack_node *self)
static void stack_node_release(t_stack_node *self)
{
t_stack_node *first_predecessor;
t_stack_link link;
recur:
assert(self->ref_count != 0);
self->ref_count--;
if (self->ref_count > 0)
return ;
t_stack_node *first_predecessor = NULL;
first_predecessor = NULL;
if (self->link_count > 0)
{
for (t_u32 i = self->link_count - 1; i > 0; i--)
{
t_stack_link link = self->links[i];
link = self->links[i];
if (link.subtree)
ts_subtree_release(link.subtree);
stack_node_release(link.node);
}
t_stack_link link = self->links[0];
link = self->links[0];
if (link.subtree)
ts_subtree_release(link.subtree);
first_predecessor = self->links[0].node;
}
mem_free(self);
if (first_predecessor)
{
self = first_predecessor;
@ -145,24 +146,26 @@ recur:
/// how much progress has been made by a given version of the stack.
static t_u32 stack__subtree_node_count(Subtree subtree)
{
t_u32 count = ts_subtree_visible_descendant_count(subtree);
t_u32 count;
count = ts_subtree_visible_descendant_count(subtree);
if (ts_subtree_visible(subtree))
count++;
// Count intermediate error nodes even though they are not visible,
// because a stack version's node count is used to check whether it
// has made any progress since the last time it encountered an error.
if (ts_subtree_symbol(subtree) == ts_builtin_sym_error_repeat)
count++;
return count;
return (count);
}
static t_stack_node *stack_node_new(t_stack_node *previous_node, Subtree subtree, bool is_pending, TSStateId state)
static t_stack_node *stack_node_new(t_stack_node *previous_node,
Subtree subtree, bool is_pending, TSStateId state)
{
t_stack_node *node = mem_alloc(sizeof(t_stack_node));
*node = (t_stack_node){.ref_count = 1, .link_count = 0, .state = state};
t_stack_node *node;
node = mem_alloc(sizeof(t_stack_node));
*node = (t_stack_node){.ref_count = 1, .link_count = 0, .state = state};
if (previous_node != NULL)
{
node->link_count = 1;
@ -171,16 +174,15 @@ static t_stack_node *stack_node_new(t_stack_node *previous_node, Subtree subtree
.subtree = subtree,
.is_pending = is_pending,
};
node->position = previous_node->position;
node->error_cost = previous_node->error_cost;
node->dynamic_precedence = previous_node->dynamic_precedence;
node->node_count = previous_node->node_count;
if (subtree)
{
node->error_cost += ts_subtree_error_cost(subtree);
node->position = length_add(node->position, ts_subtree_total_size(subtree));
node->position = length_add(node->position,
ts_subtree_total_size(subtree));
node->node_count += stack__subtree_node_count(subtree);
node->dynamic_precedence += ts_subtree_dynamic_precedence(subtree);
}
@ -190,41 +192,43 @@ static t_stack_node *stack_node_new(t_stack_node *previous_node, Subtree subtree
node->position = length_zero();
node->error_cost = 0;
}
return node;
return (node);
}
static bool stack__subtree_is_equivalent(Subtree left, Subtree right)
{
if (left == right)
return true;
return (true);
if (!left || !right)
return false;
return (false);
// Symbols must match
if (ts_subtree_symbol(left) != ts_subtree_symbol(right))
return false;
return (false);
// If both have errors, don't bother keeping both.
if (ts_subtree_error_cost(left) > 0 && ts_subtree_error_cost(right) > 0)
return true;
return (ts_subtree_padding(left).bytes == ts_subtree_padding(right).bytes &&
ts_subtree_size(left).bytes == ts_subtree_size(right).bytes && ts_subtree_child_count(left) == ts_subtree_child_count(right) &&
ts_subtree_extra(left) == ts_subtree_extra(right) && ts_subtree_external_scanner_state_eq(left, right));
return (true);
return (ts_subtree_padding(left).bytes == ts_subtree_padding(right).bytes
&& ts_subtree_size(left).bytes == ts_subtree_size(right).bytes
&& ts_subtree_child_count(left) == ts_subtree_child_count(right)
&& ts_subtree_extra(left) == ts_subtree_extra(right)
&& ts_subtree_external_scanner_state_eq(left, right));
}
static void stack_node_add_link(t_stack_node *self, t_stack_link link)
{
t_stack_link *existing_link;
t_i32 dynamic_precedence;
t_u32 node_count;
if (link.node == self)
return ;
for (int i = 0; i < self->link_count; i++)
{
t_stack_link *existing_link = &self->links[i];
existing_link = &self->links[i];
if (stack__subtree_is_equivalent(existing_link->subtree, link.subtree))
{
// In general, we preserve ambiguities until they are removed from the stack
// In general,
// we preserve ambiguities until they are removed from the stack
// during a pop operation where multiple paths lead to the same node. But in
// the special case where two links directly connect the same pair of nodes,
// we can safely remove the ambiguity ahead of time without changing behavior.
@ -233,25 +237,29 @@ static void stack_node_add_link(t_stack_node *self, t_stack_link link)
if (ts_subtree_dynamic_precedence(link.subtree) > ts_subtree_dynamic_precedence(existing_link->subtree))
{
ts_subtree_retain(link.subtree);
ts_subtree_release(/*subtree_pool, */ existing_link->subtree);
ts_subtree_release(/*subtree_pool,
*/ existing_link->subtree);
existing_link->subtree = link.subtree;
self->dynamic_precedence = link.node->dynamic_precedence + ts_subtree_dynamic_precedence(link.subtree);
self->dynamic_precedence = link.node->dynamic_precedence
+ ts_subtree_dynamic_precedence(link.subtree);
}
return ;
}
// If the previous nodes are mergeable, merge them recursively.
if (existing_link->node->state == link.node->state && existing_link->node->position.bytes == link.node->position.bytes &&
existing_link->node->error_cost == link.node->error_cost)
if (existing_link->node->state == link.node->state
&& existing_link->node->position.bytes == link.node->position.bytes
&& existing_link->node->error_cost == link.node->error_cost)
{
for (int j = 0; j < link.node->link_count; j++)
{
stack_node_add_link(existing_link->node, link.node->links[j]);
stack_node_add_link(existing_link->node,
link.node->links[j]);
}
t_i32 dynamic_precedence = link.node->dynamic_precedence;
dynamic_precedence = link.node->dynamic_precedence;
if (link.subtree)
{
dynamic_precedence += ts_subtree_dynamic_precedence(link.subtree);
dynamic_precedence
+= ts_subtree_dynamic_precedence(link.subtree);
}
if (dynamic_precedence > self->dynamic_precedence)
{
@ -261,22 +269,18 @@ static void stack_node_add_link(t_stack_node *self, t_stack_link link)
}
}
}
if (self->link_count == MAX_LINK_COUNT)
return ;
stack_node_retain(link.node);
t_u32 node_count = link.node->node_count;
int dynamic_precedence = link.node->dynamic_precedence;
node_count = link.node->node_count;
dynamic_precedence = link.node->dynamic_precedence;
self->links[self->link_count++] = link;
if (link.subtree)
{
ts_subtree_retain(link.subtree);
node_count += stack__subtree_node_count(link.subtree);
dynamic_precedence += ts_subtree_dynamic_precedence(link.subtree);
}
if (node_count > self->node_count)
self->node_count = node_count;
if (dynamic_precedence > self->dynamic_precedence)
@ -304,9 +308,12 @@ static void stack_head_delete(t_stack_head *self)
}
}
static t_stack_version ts_stack__add_version(t_stack *self, t_stack_version original_version, t_stack_node *node)
static t_stack_version ts_stack__add_version(t_stack *self,
t_stack_version original_version, t_stack_node *node)
{
t_stack_head head = {
t_stack_head head;
head = (t_stack_head){
.node = node,
.node_count_at_last_error = self->heads.contents[original_version].node_count_at_last_error,
.last_external_token = self->heads.contents[original_version].last_external_token,
@ -317,64 +324,75 @@ static t_stack_version ts_stack__add_version(t_stack *self, t_stack_version orig
stack_node_retain(node);
if (head.last_external_token)
ts_subtree_retain(head.last_external_token);
return (t_stack_version)(self->heads.size - 1);
return ((t_stack_version)(self->heads.size - 1));
}
static void ts_stack__add_slice(t_stack *self, t_stack_version original_version, t_stack_node *node, SubtreeArray *subtrees)
static void ts_stack__add_slice(t_stack *self, t_stack_version original_version,
t_stack_node *node, SubtreeArray *subtrees)
{
t_stack_version version;
t_stack_slice slice;
for (t_u32 i = self->slices.size - 1; i + 1 > 0; i--)
{
t_stack_version version = self->slices.contents[i].version;
version = self->slices.contents[i].version;
if (self->heads.contents[version].node == node)
{
t_stack_slice slice = {*subtrees, version};
slice = (t_stack_slice){*subtrees, version};
array_insert(&self->slices, i + 1, slice);
return ;
}
}
t_stack_version version = ts_stack__add_version(self, original_version, node);
t_stack_slice slice = {*subtrees, version};
version = ts_stack__add_version(self, original_version, node);
slice = (t_stack_slice){*subtrees, version};
array_push(&self->slices, slice);
}
static t_stack_slice_array stack__iter(t_stack *self, t_stack_version version, t_stack_callback callback, void *payload,
int goal_subtree_count)
static t_stack_slice_array stack__iter(t_stack *self, t_stack_version version,
t_stack_callback callback, void *payload, int goal_subtree_count)
{
t_stack_head *head;
bool include_subtrees;
t_stack_iterator *iterator;
t_stack_node *node;
t_stack_action action;
bool should_pop;
bool should_stop;
SubtreeArray subtrees;
t_stack_iterator *next_iterator;
t_stack_link link;
t_stack_iterator current_iterator;
t_stack_iterator new_iterator;
array_clear(&self->slices);
array_clear(&self->iterators);
t_stack_head *head = array_get(&self->heads, version);
t_stack_iterator new_iterator = {
head = array_get(&self->heads, version);
new_iterator = (t_stack_iterator){
.node = head->node,
.subtrees = array_new(),
.subtree_count = 0,
.is_pending = true,
};
bool include_subtrees = false;
include_subtrees = false;
if (goal_subtree_count >= 0)
{
include_subtrees = true;
array_reserve(&new_iterator.subtrees, (t_u32)ts_subtree_alloc_size(goal_subtree_count) / sizeof(Subtree));
array_reserve(&new_iterator.subtrees,
(t_u32)ts_subtree_alloc_size(goal_subtree_count) / sizeof(Subtree));
}
array_push(&self->iterators, new_iterator);
while (self->iterators.size > 0)
{
for (t_u32 i = 0, size = self->iterators.size; i < size; i++)
{
t_stack_iterator *iterator = &self->iterators.contents[i];
t_stack_node *node = iterator->node;
t_stack_action action = callback(payload, iterator);
bool should_pop = action & SActionPop;
bool should_stop = action & SActionStop || node->link_count == 0;
iterator = &self->iterators.contents[i];
node = iterator->node;
action = callback(payload, iterator);
should_pop = action & SActionPop;
should_stop = action & SActionStop || node->link_count == 0;
if (should_pop)
{
SubtreeArray subtrees = iterator->subtrees;
subtrees = iterator->subtrees;
if (!should_stop)
{
ts_subtree_array_copy(subtrees, &subtrees);
@ -382,7 +400,6 @@ static t_stack_slice_array stack__iter(t_stack *self, t_stack_version version, t
ts_subtree_array_reverse(&subtrees);
ts_stack__add_slice(self, version, node, &subtrees);
}
if (should_stop)
{
if (!should_pop)
@ -393,11 +410,8 @@ static t_stack_slice_array stack__iter(t_stack *self, t_stack_version version, t
i--, size--;
continue ;
}
for (t_u32 j = 1; j <= node->link_count; j++)
{
t_stack_iterator *next_iterator;
t_stack_link link;
if (j == node->link_count)
{
link = node->links[0];
@ -408,12 +422,12 @@ static t_stack_slice_array stack__iter(t_stack *self, t_stack_version version, t
if (self->iterators.size >= MAX_ITERATOR_COUNT)
continue ;
link = node->links[j];
t_stack_iterator current_iterator = self->iterators.contents[i];
current_iterator = self->iterators.contents[i];
array_push(&self->iterators, current_iterator);
next_iterator = array_back(&self->iterators);
ts_subtree_array_copy(next_iterator->subtrees, &next_iterator->subtrees);
ts_subtree_array_copy(next_iterator->subtrees,
&next_iterator->subtrees);
}
next_iterator->node = link.node;
if (link.subtree)
{
@ -422,7 +436,6 @@ static t_stack_slice_array stack__iter(t_stack *self, t_stack_version version, t
array_push(&next_iterator->subtrees, link.subtree);
ts_subtree_retain(link.subtree);
}
if (!ts_subtree_extra(link.subtree))
{
next_iterator->subtree_count++;
@ -440,8 +453,7 @@ static t_stack_slice_array stack__iter(t_stack *self, t_stack_version version, t
}
}
}
return self->slices;
return (self->slices);
}
t_stack *ts_stack_new(void)
@ -449,17 +461,14 @@ t_stack *ts_stack_new(void)
t_stack *self;
self = mem_alloc(sizeof(*self));
array_init(&self->heads);
array_init(&self->slices);
array_init(&self->iterators);
array_reserve(&self->heads, 4);
array_reserve(&self->slices, 4);
array_reserve(&self->iterators, 4);
self->base_node = stack_node_new(NULL, NULL, false, 1);
ts_stack_clear(self);
return (self);
}
@ -481,27 +490,31 @@ void ts_stack_delete(t_stack *self)
t_u32 ts_stack_version_count(const t_stack *self)
{
return self->heads.size;
return (self->heads.size);
}
TSStateId ts_stack_state(const t_stack *self, t_stack_version version)
{
return array_get(&self->heads, version)->node->state;
return (array_get(&self->heads, version)->node->state);
}
Length ts_stack_position(const t_stack *self, t_stack_version version)
{
return array_get(&self->heads, version)->node->position;
return (array_get(&self->heads, version)->node->position);
}
Subtree ts_stack_last_external_token(const t_stack *self, t_stack_version version)
Subtree ts_stack_last_external_token(const t_stack *self,
t_stack_version version)
{
return array_get(&self->heads, version)->last_external_token;
return (array_get(&self->heads, version)->last_external_token);
}
void ts_stack_set_last_external_token(t_stack *self, t_stack_version version, Subtree token)
void ts_stack_set_last_external_token(t_stack *self, t_stack_version version,
Subtree token)
{
t_stack_head *head = array_get(&self->heads, version);
t_stack_head *head;
head = array_get(&self->heads, version);
if (token)
ts_subtree_retain(token);
if (head->last_external_token)
@ -511,165 +524,204 @@ void ts_stack_set_last_external_token(t_stack *self, t_stack_version version, Su
t_u32 ts_stack_error_cost(const t_stack *self, t_stack_version version)
{
t_stack_head *head = array_get(&self->heads, version);
t_u32 result = head->node->error_cost;
if (head->status == SStatusPaused || (head->node->state == ERROR_STATE && !head->node->links[0].subtree))
t_stack_head *head;
t_u32 result;
head = array_get(&self->heads, version);
result = head->node->error_cost;
if (head->status == SStatusPaused || (head->node->state == ERROR_STATE
&& !head->node->links[0].subtree))
{
result += ERROR_COST_PER_RECOVERY;
}
return result;
return (result);
}
t_u32 ts_stack_node_count_since_error(const t_stack *self, t_stack_version version)
t_u32 ts_stack_node_count_since_error(const t_stack *self,
t_stack_version version)
{
t_stack_head *head = array_get(&self->heads, version);
t_stack_head *head;
head = array_get(&self->heads, version);
if (head->node->node_count < head->node_count_at_last_error)
{
head->node_count_at_last_error = head->node->node_count;
}
return head->node->node_count - head->node_count_at_last_error;
return (head->node->node_count - head->node_count_at_last_error);
}
void ts_stack_push(t_stack *self, t_stack_version version, Subtree subtree, bool pending, TSStateId state)
void ts_stack_push(t_stack *self, t_stack_version version, Subtree subtree,
bool pending, TSStateId state)
{
t_stack_head *head = array_get(&self->heads, version);
t_stack_node *new_node = stack_node_new(head->node, subtree, pending, state);
t_stack_head *head;
t_stack_node *new_node;
head = array_get(&self->heads, version);
new_node = stack_node_new(head->node, subtree, pending, state);
if (!subtree)
head->node_count_at_last_error = new_node->node_count;
head->node = new_node;
}
t_stack_action pop_count_callback(void *payload, const t_stack_iterator *iterator)
t_stack_action pop_count_callback(void *payload,
const t_stack_iterator *iterator)
{
t_u32 *goal_subtree_count = payload;
t_u32 *goal_subtree_count;
goal_subtree_count = payload;
if (iterator->subtree_count == *goal_subtree_count)
{
return SActionPop | SActionStop;
return (SActionPop | SActionStop);
}
else
{
return SActionNone;
return (SActionNone);
}
}
t_stack_slice_array ts_stack_pop_count(t_stack *self, t_stack_version version, t_u32 count)
t_stack_slice_array ts_stack_pop_count(t_stack *self, t_stack_version version,
t_u32 count)
{
return stack__iter(self, version, pop_count_callback, &count, (int)count);
return (stack__iter(self, version, pop_count_callback, &count, (int)count));
}
t_stack_action pop_pending_callback(void *payload, const t_stack_iterator *iterator)
t_stack_action pop_pending_callback(void *payload,
const t_stack_iterator *iterator)
{
(void)payload;
if (iterator->subtree_count >= 1)
{
if (iterator->is_pending)
{
return SActionPop | SActionStop;
return (SActionPop | SActionStop);
else
return (SActionStop);
}
else
{
return SActionStop;
}
}
else
{
return SActionNone;
}
return (SActionNone);
}
t_stack_slice_array ts_stack_pop_pending(t_stack *self, t_stack_version version)
{
t_stack_slice_array pop = stack__iter(self, version, pop_pending_callback, NULL, 0);
t_stack_slice_array pop;
pop = stack__iter(self, version, pop_pending_callback, NULL, 0);
if (pop.size > 0)
{
ts_stack_renumber_version(self, pop.contents[0].version, version);
pop.contents[0].version = version;
}
return pop;
return (pop);
}
t_stack_action pop_error_callback(void *payload, const t_stack_iterator *iterator)
t_stack_action pop_error_callback(void *payload,
const t_stack_iterator *iterator)
{
bool *found_error;
if (iterator->subtrees.size > 0)
{
bool *found_error = payload;
if (!*found_error && ts_subtree_is_error(iterator->subtrees.contents[0]))
found_error = payload;
if (!*found_error
&& ts_subtree_is_error(iterator->subtrees.contents[0]))
{
*found_error = true;
return SActionPop | SActionStop;
return (SActionPop | SActionStop);
}
else
{
return SActionStop;
}
return (SActionStop);
}
else
{
return SActionNone;
}
return (SActionNone);
}
SubtreeArray ts_stack_pop_error(t_stack *self, t_stack_version version)
{
t_stack_node *node = array_get(&self->heads, version)->node;
for (t_u32 i = 0; i < node->link_count; i++)
t_stack_node *node;
bool found_error;
t_stack_slice_array pop;
t_usize i;
node = array_get(&self->heads, version)->node;
i = 0;
while (i < node->link_count)
{
if (node->links[i].subtree && ts_subtree_is_error(node->links[i].subtree))
if (node->links[i].subtree
&& ts_subtree_is_error(node->links[i].subtree))
{
bool found_error = false;
t_stack_slice_array pop = stack__iter(self, version, pop_error_callback, &found_error, 1);
found_error = false;
pop = stack__iter(self, version, pop_error_callback, &found_error,
1);
if (pop.size > 0)
{
assert(pop.size == 1);
ts_stack_renumber_version(self, pop.contents[0].version, version);
return pop.contents[0].subtrees;
ts_stack_renumber_version(self, pop.contents[0].version,
version);
return (pop.contents[0].subtrees);
}
break ;
}
i++;
}
return (SubtreeArray){.size = 0};
return ((SubtreeArray){.size = 0});
}
t_stack_action pop_all_callback(void *payload, const t_stack_iterator *iterator)
t_stack_action pop_all_callback(void *payload,
const t_stack_iterator *iterator)
{
(void)payload;
return iterator->node->link_count == 0 ? SActionPop : SActionNone;
if (iterator->node->link_count == 0)
return (SActionPop);
else
return (SActionNone);
}
t_stack_slice_array ts_stack_pop_all(t_stack *self, t_stack_version version)
{
return stack__iter(self, version, pop_all_callback, NULL, 0);
return (stack__iter(self, version, pop_all_callback, NULL, 0));
}
t_stack_action summarize_stack_callback(void *payload, const t_stack_iterator *iterator)
t_stack_action summarize_stack_callback(void *payload,
const t_stack_iterator *iterator)
{
t_summarize_stack_session *session = payload;
TSStateId state = iterator->node->state;
t_u32 depth = iterator->subtree_count;
t_summarize_stack_session *session;
TSStateId state;
t_u32 depth;
t_stack_summary_entry entry;
t_usize i;
session = payload;
state = iterator->node->state;
depth = iterator->subtree_count;
if (depth > session->max_depth)
return SActionStop;
for (t_u32 i = session->summary->size - 1; i + 1 > 0; i--)
return (SActionStop);
i = session->summary->size - 1;
while (i + 1 > 0)
{
t_stack_summary_entry entry = session->summary->contents[i];
entry = session->summary->contents[i--];
if (entry.depth < depth)
break ;
if (entry.depth == depth && entry.state == state)
return SActionNone;
return (SActionNone);
}
array_push(session->summary, ((t_stack_summary_entry){
array_push(session->summary,
((t_stack_summary_entry){
.position = iterator->node->position,
.depth = depth,
.state = state,
}));
return SActionNone;
return (SActionNone);
}
void ts_stack_record_summary(t_stack *self, t_stack_version version, t_u32 max_depth)
void ts_stack_record_summary(t_stack *self, t_stack_version version,
t_u32 max_depth)
{
t_summarize_stack_session session = {.summary = mem_alloc(sizeof(t_stack_summary)), .max_depth = max_depth};
t_summarize_stack_session session;
t_stack_head *head;
session = (t_summarize_stack_session){.summary = mem_alloc(sizeof(t_stack_summary)), .max_depth = max_depth};
array_init(session.summary);
stack__iter(self, version, summarize_stack_callback, &session, -1);
t_stack_head *head = &self->heads.contents[version];
head = &self->heads.contents[version];
if (head->summary)
{
array_delete(head->summary);
@ -680,32 +732,36 @@ void ts_stack_record_summary(t_stack *self, t_stack_version version, t_u32 max_d
t_stack_summary *ts_stack_get_summary(t_stack *self, t_stack_version version)
{
return array_get(&self->heads, version)->summary;
return (array_get(&self->heads, version)->summary);
}
int ts_stack_dynamic_precedence(t_stack *self, t_stack_version version)
{
return array_get(&self->heads, version)->node->dynamic_precedence;
return (array_get(&self->heads, version)->node->dynamic_precedence);
}
bool ts_stack_has_advanced_since_error(const t_stack *self, t_stack_version version)
bool ts_stack_has_advanced_since_error(const t_stack *self,
t_stack_version version)
{
const t_stack_head *head = array_get(&self->heads, version);
const t_stack_node *node = head->node;
Subtree subtree;
if (node->error_cost == 0)
return true;
return (true);
while (node)
{
if (node->link_count > 0)
{
Subtree subtree = node->links[0].subtree;
subtree = node->links[0].subtree;
if (subtree)
{
if (ts_subtree_total_bytes(subtree) > 0)
{
return true;
return (true);
}
else if (node->node_count > head->node_count_at_last_error && ts_subtree_error_cost(subtree) == 0)
else if (node->node_count > head->node_count_at_last_error
&& ts_subtree_error_cost(subtree) == 0)
{
node = node->links[0].node;
continue ;
@ -714,7 +770,7 @@ bool ts_stack_has_advanced_since_error(const t_stack *self, t_stack_version vers
}
break ;
}
return false;
return (false);
}
void ts_stack_remove_version(t_stack *self, t_stack_version version)
@ -723,14 +779,18 @@ void ts_stack_remove_version(t_stack *self, t_stack_version version)
array_erase(&self->heads, version);
}
void ts_stack_renumber_version(t_stack *self, t_stack_version v1, t_stack_version v2)
void ts_stack_renumber_version(t_stack *self, t_stack_version v1,
t_stack_version v2)
{
t_stack_head *source_head;
t_stack_head *target_head;
if (v1 == v2)
return ;
assert(v2 < v1);
assert((t_u32)v1 < self->heads.size);
t_stack_head *source_head = &self->heads.contents[v1];
t_stack_head *target_head = &self->heads.contents[v2];
source_head = &self->heads.contents[v1];
target_head = &self->heads.contents[v2];
if (target_head->summary && !source_head->summary)
{
source_head->summary = target_head->summary;
@ -741,50 +801,64 @@ void ts_stack_renumber_version(t_stack *self, t_stack_version v1, t_stack_versio
array_erase(&self->heads, v1);
}
void ts_stack_swap_versions(t_stack *self, t_stack_version v1, t_stack_version v2)
void ts_stack_swap_versions(t_stack *self, t_stack_version v1,
t_stack_version v2)
{
t_stack_head temporary_head = self->heads.contents[v1];
t_stack_head temporary_head;
temporary_head = self->heads.contents[v1];
self->heads.contents[v1] = self->heads.contents[v2];
self->heads.contents[v2] = temporary_head;
}
t_stack_version ts_stack_copy_version(t_stack *self, t_stack_version version)
{
t_stack_head *head;
assert(version < self->heads.size);
array_push(&self->heads, self->heads.contents[version]);
t_stack_head *head = array_back(&self->heads);
head = array_back(&self->heads);
stack_node_retain(head->node);
if (head->last_external_token)
ts_subtree_retain(head->last_external_token);
head->summary = NULL;
return self->heads.size - 1;
return (self->heads.size - 1);
}
bool ts_stack_merge(t_stack *self, t_stack_version version1, t_stack_version version2)
bool ts_stack_merge(t_stack *self, t_stack_version version1,
t_stack_version version2)
{
t_stack_head *head1;
t_stack_head *head2;
t_usize i;
if (!ts_stack_can_merge(self, version1, version2))
return false;
t_stack_head *head1 = &self->heads.contents[version1];
t_stack_head *head2 = &self->heads.contents[version2];
for (t_u32 i = 0; i < head2->node->link_count; i++)
{
stack_node_add_link(head1->node, head2->node->links[i]);
}
return (false);
head1 = &self->heads.contents[version1];
head2 = &self->heads.contents[version2];
i = 0;
while (i < head2->node->link_count)
stack_node_add_link(head1->node, head2->node->links[i++]);
if (head1->node->state == ERROR_STATE)
{
head1->node_count_at_last_error = head1->node->node_count;
}
ts_stack_remove_version(self, version2);
return true;
return (true);
}
bool ts_stack_can_merge(t_stack *self, t_stack_version version1, t_stack_version version2)
bool ts_stack_can_merge(t_stack *self, t_stack_version version1,
t_stack_version version2)
{
t_stack_head *head1 = &self->heads.contents[version1];
t_stack_head *head2 = &self->heads.contents[version2];
return head1->status == SStatusActive && head2->status == SStatusActive && head1->node->state == head2->node->state &&
head1->node->position.bytes == head2->node->position.bytes && head1->node->error_cost == head2->node->error_cost &&
ts_subtree_external_scanner_state_eq(head1->last_external_token, head2->last_external_token);
t_stack_head *head1;
t_stack_head *head2;
head1 = &self->heads.contents[version1];
head2 = &self->heads.contents[version2];
return (head1->status == SStatusActive && head2->status == SStatusActive
&& head1->node->state == head2->node->state
&& head1->node->position.bytes == head2->node->position.bytes
&& head1->node->error_cost == head2->node->error_cost
&& ts_subtree_external_scanner_state_eq(head1->last_external_token,
head2->last_external_token));
}
void ts_stack_halt(t_stack *self, t_stack_version version)
@ -792,9 +866,12 @@ void ts_stack_halt(t_stack *self, t_stack_version version)
array_get(&self->heads, version)->status = SStatusHalted;
}
void ts_stack_pause(t_stack *self, t_stack_version version, Subtree lookahead)
void ts_stack_pause(t_stack *self, t_stack_version version,
Subtree lookahead)
{
t_stack_head *head = array_get(&self->heads, version);
t_stack_head *head;
head = array_get(&self->heads, version);
head->status = SStatusPaused;
head->lookahead_when_paused = lookahead;
head->node_count_at_last_error = head->node->node_count;
@ -802,38 +879,43 @@ void ts_stack_pause(t_stack *self, t_stack_version version, Subtree lookahead)
bool ts_stack_is_active(const t_stack *self, t_stack_version version)
{
return array_get(&self->heads, version)->status == SStatusActive;
return (array_get(&self->heads, version)->status == SStatusActive);
}
bool ts_stack_is_halted(const t_stack *self, t_stack_version version)
{
return array_get(&self->heads, version)->status == SStatusHalted;
return (array_get(&self->heads, version)->status == SStatusHalted);
}
bool ts_stack_is_paused(const t_stack *self, t_stack_version version)
{
return array_get(&self->heads, version)->status == SStatusPaused;
return (array_get(&self->heads, version)->status == SStatusPaused);
}
Subtree ts_stack_resume(t_stack *self, t_stack_version version)
{
t_stack_head *head = array_get(&self->heads, version);
t_stack_head *head;
Subtree result;
head = array_get(&self->heads, version);
assert(head->status == SStatusPaused);
Subtree result = head->lookahead_when_paused;
result = head->lookahead_when_paused;
head->status = SStatusActive;
head->lookahead_when_paused = NULL;
return result;
return (result);
}
void ts_stack_clear(t_stack *self)
{
t_usize i;
stack_node_retain(self->base_node);
for (t_u32 i = 0; i < self->heads.size; i++)
{
stack_head_delete(&self->heads.contents[i]);
}
i = 0;
while (i < self->heads.size)
stack_head_delete(&self->heads.contents[i++]);
array_clear(&self->heads);
array_push(&self->heads, ((t_stack_head){
array_push(&self->heads,
((t_stack_head){
.node = self->base_node,
.status = SStatusActive,
.last_external_token = NULL,