#include "ctx.h"
#include "node.h"

#include <blue/object/string.h>
#include <ivy/lang/lex.h>
#include <stdio.h>

struct block_parser_state {
	struct parser_state s_base;
	bool s_single_expr;
	unsigned int s_terminator;
};

static struct token_parse_result parse_end(
	struct ivy_parser *ctx, struct ivy_token *tok)
{
	struct block_parser_state *state
		= parser_get_state(ctx, struct class_parser_state);

	struct ivy_ast_block_node *node
		= (struct ivy_ast_block_node *)(state->s_base.s_node);

	parser_pop_state(ctx, STATE_ADD_NODE_TO_PARENT);
	return PARSE_RESULT(IVY_OK, 0);
}

static struct token_parse_result parse_expr_begin(
	struct ivy_parser *ctx, struct ivy_token *tok)
{
	struct block_parser_state *state
		= parser_get_state(ctx, struct class_parser_state);

	struct ivy_ast_block_node *node
		= (struct ivy_ast_block_node *)(state->s_base.s_node);

	parser_push_state(ctx, IVY_AST_EXPR);
	return PARSE_RESULT(IVY_OK, PARSE_REPEAT_TOKEN);
}

static enum ivy_status add_child(
	struct ivy_ast_node *parent, struct ivy_ast_node *child)
{
	struct ivy_ast_block_node *block = (struct ivy_ast_block_node *)parent;

	b_queue_push_back(&block->n_expr, &child->n_entry);

	return IVY_OK;
}

static void init_state(struct ivy_parser *ctx, struct parser_state *sp)
{
	struct class_parser_state *state = (struct class_parser_state *)sp;
}

struct ast_node_type block_node_ops = {
	.n_add_child = add_child,
	.n_init_state = init_state,
	.n_state_size = sizeof(struct block_parser_state),
	.n_node_size = sizeof(struct ivy_ast_block_node),
	.n_keyword_parsers = {
		[IVY_KW_END] = parse_end,
	},
	.n_expr_parser = {
		.expr_begin = parse_expr_begin,
	},
};