/**
* Reconstruct the list of active formatting elements
*
* \param treebuilder Treebuilder instance containing list
* \return HUBBUB_OK on success, appropriate error otherwise.
*/
hubbub_error reconstruct_active_formatting_list(hubbub_treebuilder *treebuilder)
{
hubbub_error error = HUBBUB_OK;
formatting_list_entry *entry, *initial_entry;
uint32_t sp = treebuilder->context.current_node;
if (treebuilder->context.formatting_list == NULL)
return HUBBUB_OK;
entry = treebuilder->context.formatting_list_end;
/* Assumption: HTML and TABLE elements are not inserted into the list */
if (is_scoping_element(entry->details.type) || entry->stack_index != 0)
return HUBBUB_OK;
while (entry->prev != NULL) {
entry = entry->prev;
if (is_scoping_element(entry->details.type) ||
entry->stack_index != 0) {
entry = entry->next;
break;
}
}
/* Save initial entry for later */
initial_entry = entry;
/* Process formatting list entries, cloning nodes and
* inserting them into the DOM and element stack */
while (entry != NULL) {
void *clone, *appended;
bool foster;
element_type type = current_node(treebuilder);
error = treebuilder->tree_handler->clone_node(
treebuilder->tree_handler->ctx,
entry->details.node,
false,
&clone);
if (error != HUBBUB_OK)
goto cleanup;
foster = treebuilder->context.in_table_foster &&
(type == TABLE || type == TBODY ||
type == TFOOT || type == THEAD ||
type == TR);
if (foster) {
error = aa_insert_into_foster_parent(treebuilder,
clone, &appended);
} else {
error = treebuilder->tree_handler->append_child(
treebuilder->tree_handler->ctx,
treebuilder->context.element_stack[
treebuilder->context.current_node].node,
clone,
&appended);
}
if (error != HUBBUB_OK)
goto cleanup;
error = element_stack_push(treebuilder, entry->details.ns,
entry->details.type, appended);
if (error != HUBBUB_OK) {
remove_node_from_dom(treebuilder, appended);
goto cleanup;
}
entry = entry->next;
}
/* Now, replace the formatting list entries */
for (entry = initial_entry; entry != NULL; entry = entry->next) {
void *node;
hubbub_ns prev_ns;
element_type prev_type;
void *prev_node;
uint32_t prev_stack_index;
node = treebuilder->context.element_stack[++sp].node;
error = formatting_list_replace(treebuilder, entry,
entry->details.ns, entry->details.type,
node, sp,
&prev_ns, &prev_type, &prev_node,
&prev_stack_index);
/* Cannot fail. Ensure this. */
assert(error == HUBBUB_OK);
}
return HUBBUB_OK;
cleanup:
/* An error occurred while cloning nodes and inserting them.
* We must restore the state on entry here. */
while (treebuilder->context.current_node > sp) {
hubbub_ns ns;
element_type type;
void *node;
element_stack_pop(treebuilder, &ns, &type, &node);
remove_node_from_dom(treebuilder, node);
}
return error;
}
/**
* Create element and insert it into the DOM,
* potentially pushing it on the stack
*
* \param treebuilder The treebuilder instance
* \param tag The element to insert
* \param push Whether to push the element onto the stack
* \return HUBBUB_OK on success, appropriate error otherwise.
*/
hubbub_error insert_element(hubbub_treebuilder *treebuilder,
const hubbub_tag *tag, bool push)
{
element_type type = current_node(treebuilder);
hubbub_error error;
void *appended;
if (treebuilder->context.in_table_foster &&
(type == TABLE || type == TBODY || type == TFOOT ||
type == THEAD || type == TR)) {
error = aa_insert_into_foster_parent_new(treebuilder,
HUBBUB_TOKEN_START_TAG,
&appended);
} else {
error = treebuilder->tree_handler->append_child_new(
treebuilder->tree_handler->ctx,
treebuilder->context.element_stack[
treebuilder->context.current_node].node,
HUBBUB_TOKEN_START_TAG, &appended);
}
if (error != HUBBUB_OK)
return error;
error = treebuilder->tree_handler->set_name(
treebuilder->tree_handler->ctx,
appended,
&tag->name);
if (error != HUBBUB_OK)
return error;
error = treebuilder->tree_handler->add_attributes(
treebuilder->tree_handler->ctx,
appended,
tag->attributes,
tag->n_attributes);
if (error != HUBBUB_OK)
return error;
type = element_type_from_name(treebuilder, &tag->name);
if (treebuilder->context.form_element != NULL &&
is_form_associated(type)) {
/* Consideration of @form is left to the client */
error = treebuilder->tree_handler->form_associate(
treebuilder->tree_handler->ctx,
treebuilder->context.form_element,
appended);
if (error != HUBBUB_OK) {
remove_node_from_dom(treebuilder, appended);
return error;
}
}
if (push) {
error = element_stack_push(treebuilder,
tag->ns, type, appended);
if (error != HUBBUB_OK) {
remove_node_from_dom(treebuilder, appended);
return error;
}
}
return HUBBUB_OK;
}
/**
* Handle tokens in "in row" insertion mode
*
* \param treebuilder The treebuilder instance
* \param token The token to process
* \return True to reprocess the token, false otherwise
*/
hubbub_error handle_in_row(hubbub_treebuilder *treebuilder,
const hubbub_token *token)
{
hubbub_error err = HUBBUB_OK;
switch (token->type) {
case HUBBUB_TOKEN_START_TAG:
{
element_type type = element_type_from_name(treebuilder,
&token->data.tag.name);
if (type == TH || type == TD) {
table_clear_stack(treebuilder);
err = insert_element(treebuilder, &token->data.tag,
true);
if (err != HUBBUB_OK)
return err;
treebuilder->context.mode = IN_CELL;
/* ref node for formatting list */
treebuilder->tree_handler->ref_node(
treebuilder->tree_handler->ctx,
treebuilder->context.element_stack[
treebuilder->context.current_node].node);
err = formatting_list_append(treebuilder,
token->data.tag.ns, type,
treebuilder->context.element_stack[
treebuilder->context.current_node].node,
treebuilder->context.current_node);
if (err != HUBBUB_OK) {
hubbub_ns ns;
element_type type;
void *node;
/* Revert changes */
remove_node_from_dom(treebuilder,
treebuilder->context.element_stack[
treebuilder->context.current_node].node);
element_stack_pop(treebuilder, &ns, &type,
&node);
return err;
}
} else if (type == CAPTION || type == COL ||
type == COLGROUP || type == TBODY ||
type == TFOOT || type == THEAD || type == TR) {
err = act_as_if_end_tag_tr(treebuilder);
} else {
err = handle_in_table(treebuilder, token);
}
}
break;
case HUBBUB_TOKEN_END_TAG:
{
element_type type = element_type_from_name(treebuilder,
&token->data.tag.name);
if (type == TR) {
/* We're done with this token, but act_as_if_end_tag_tr
* will return HUBBUB_REPROCESS. Therefore, ignore the
* return value. */
(void) act_as_if_end_tag_tr(treebuilder);
} else if (type == TABLE) {
err = act_as_if_end_tag_tr(treebuilder);
} else if (type == BODY || type == CAPTION || type == COL ||
type == COLGROUP || type == HTML ||
type == TD || type == TH) {
/** \todo parse error */
/* Ignore the token */
} else {
err = handle_in_table(treebuilder, token);
}
}
break;
case HUBBUB_TOKEN_CHARACTER:
case HUBBUB_TOKEN_COMMENT:
case HUBBUB_TOKEN_DOCTYPE:
case HUBBUB_TOKEN_EOF:
err = handle_in_table(treebuilder, token);
break;
}
return err;
}
