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Introduce call_dom_stack_callbacks as a common way to call back

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This commit is contained in:
Jonas Fonseca 2005-12-20 20:01:18 +01:00 committed by Jonas Fonseca
parent d6b125fa68
commit e309de8950
1 changed files with 27 additions and 15 deletions
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42
src/document/dom/stack.c
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@ -70,10 +70,34 @@ done_dom_stack(struct dom_stack *stack)
memset(stack, 0, sizeof(*stack));
}
enum dom_stack_action {
DOM_STACK_PUSH,
DOM_STACK_POP,
};
static void
call_dom_stack_callbacks(struct dom_stack *stack, struct dom_stack_state *state,
enum dom_stack_action action)
{
dom_stack_callback_T callback;
if (!stack->callbacks)
callback = NULL;
else if (action == DOM_STACK_PUSH)
callback = stack->callbacks->push[state->node->type];
else
callback = stack->callbacks->pop[state->node->type];
if (callback) {
void *state_data = get_dom_stack_state_data(stack, state);
callback(stack, state->node, state_data);
}
}
struct dom_node *
push_dom_node(struct dom_stack *stack, struct dom_node *node)
{
dom_stack_callback_T callback;
struct dom_stack_state *state;
assert(stack && node);
@ -108,13 +132,7 @@ push_dom_node(struct dom_stack *stack, struct dom_node *node)
/* Grow the state array to the new depth so the state accessors work
* in the callbacks */
stack->depth++;
callback = stack->callbacks ? stack->callbacks->push[node->type] : NULL;
if (callback) {
void *state_data = get_dom_stack_state_data(stack, state);
callback(stack, node, state_data);
}
call_dom_stack_callbacks(stack, state, DOM_STACK_PUSH);
return node;
}
@ -123,7 +141,6 @@ static int
do_pop_dom_node(struct dom_stack *stack, struct dom_stack_state *parent)
{
struct dom_stack_state *state;
dom_stack_callback_T callback;
assert(stack && !dom_stack_is_empty(stack));
@ -131,12 +148,7 @@ do_pop_dom_node(struct dom_stack *stack, struct dom_stack_state *parent)
if (state->immutable)
return 1;
callback = stack->callbacks ? stack->callbacks->pop[state->node->type] : NULL;
if (callback) {
void *state_data = get_dom_stack_state_data(stack, state);
callback(stack, state->node, state_data);
}
call_dom_stack_callbacks(stack, state, DOM_STACK_POP);
if (!stack->keep_nodes)
done_dom_node(state->node);