#include <ivy/lang/ast.h>
#include "ctx.h"
#include "node.h"
#include "unit-package.h"
#include "iterate.h"

static enum ivy_status parse_package_keyword(
	struct ivy_parser *ctx, struct ivy_token *tok)
{
	parser_push_state(ctx, IVY_AST_UNIT_PACKAGE);
	return IVY_OK;
}

static enum ivy_status add_child(
	struct ivy_ast_node *parent, struct ivy_ast_node *child)
{
	struct ivy_ast_unit_node *unit = (struct ivy_ast_unit_node *)parent;
	b_queue_push_back(&unit->n_children, &child->n_entry);
	return IVY_OK;
}

static void collect_children(struct ivy_ast_node *node, struct ivy_ast_node_iterator *iterator)
{
	struct ivy_ast_unit_node *unit = (struct ivy_ast_unit_node *)node;
	b_queue_iterator it = {0};
	b_queue_foreach (&it, &unit->n_children) {
		struct ivy_ast_node *child = b_unbox(struct ivy_ast_node, it.entry, n_entry);
		ast_node_iterator_enqueue_node(iterator, node, child);
	}
}

struct ast_node_type unit_node_ops = {
	.n_add_child = add_child,
	.n_collect_children = collect_children,
	.n_state_size = sizeof(struct parser_state),
	.n_node_size = sizeof(struct ivy_ast_unit_node),
        .n_keyword_parsers = {
		[IVY_KW_PACKAGE] = parse_package_keyword,
	},
};