#include "ctx.h"

#include <ivy/lang/ast.h>

bool parse_try(struct ivy_parser *parser, struct ivy_ast_node **out)
{
	if (!parse_keyword(parser, IVY_KW_TRY)) {
		parse_trace(parser, "expected `try` keyword");
		return false;
	}

	struct ivy_ast_try_node *try = create_node(IVY_AST_TRY);

	if (!parse_expr(parser, EXPR_PARSE_STOP_KW_CONTROL, &try->n_try)) {
		parse_trace(parser, "invalid try block");
		return false;
	}

	bool ok = true;
	while (1) {
		if (!parse_keyword(parser, IVY_KW_CATCH)) {
			break;
		}

		struct ivy_ast_node *catch_guard = NULL;
		struct ivy_ast_node *catch_block = NULL;

		if (!parse_expr(parser, EXPR_PARSE_STOP_LEFT_BRACKET, &catch_guard)) {
			parse_trace(parser, "invalid catch guard");
			ok = false;
			break;
		}

		if (!parse_block(parser, &catch_block)) {
			parse_trace(parser, "invalid catch block");
			ok = false;
			break;
		}

		struct ivy_ast_try_catch_node *catch
			= create_node(IVY_AST_TRY_CATCH);
		catch->n_pattern = catch_guard;
		catch->n_block = catch_block;
		fx_queue_push_back(&try->n_catch, &catch->n_base.n_entry);
	}

	*out = generic_node(try);
	return true;
}