Ejemplo n.º 1
0
ofc_sema_stmt_t* ofc_sema_stmt_io_inquire(
	ofc_sema_scope_t* scope,
	const ofc_parse_stmt_t* stmt)
{
	if (!scope || !stmt
		|| (stmt->type != OFC_PARSE_STMT_IO_INQUIRE)
		|| !stmt->io.params)
		return NULL;

	ofc_sema_stmt_t s;
	s.type = OFC_SEMA_STMT_IO_INQUIRE;
	s.io_inquire.unit          = NULL;
	s.io_inquire.access        = NULL;
	s.io_inquire.action        = NULL;
	s.io_inquire.blank         = NULL;
	s.io_inquire.delim         = NULL;
	s.io_inquire.direct        = NULL;
	s.io_inquire.err           = NULL;
	s.io_inquire.exist         = NULL;
	s.io_inquire.file          = NULL;
	s.io_inquire.form          = NULL;
	s.io_inquire.formatted     = NULL;
	s.io_inquire.iostat        = NULL;
	s.io_inquire.name          = NULL;
	s.io_inquire.named         = NULL;
	s.io_inquire.nextrec       = NULL;
	s.io_inquire.number        = NULL;
	s.io_inquire.opened        = NULL;
	s.io_inquire.pad           = NULL;
	s.io_inquire.position      = NULL;
	s.io_inquire.read          = NULL;
	s.io_inquire.readwrite     = NULL;
	s.io_inquire.recl          = NULL;
	s.io_inquire.sequential    = NULL;
	s.io_inquire.unformatted   = NULL;
	s.io_inquire.write         = NULL;

	ofc_parse_call_arg_t* ca_unit        = NULL;
	ofc_parse_call_arg_t* ca_access      = NULL;
	ofc_parse_call_arg_t* ca_action      = NULL;
	ofc_parse_call_arg_t* ca_blank       = NULL;
	ofc_parse_call_arg_t* ca_delim       = NULL;
	ofc_parse_call_arg_t* ca_direct      = NULL;
	ofc_parse_call_arg_t* ca_err         = NULL;
	ofc_parse_call_arg_t* ca_exist       = NULL;
	ofc_parse_call_arg_t* ca_file        = NULL;
	ofc_parse_call_arg_t* ca_form        = NULL;
	ofc_parse_call_arg_t* ca_formatted   = NULL;
	ofc_parse_call_arg_t* ca_iostat      = NULL;
	ofc_parse_call_arg_t* ca_name        = NULL;
	ofc_parse_call_arg_t* ca_named       = NULL;
	ofc_parse_call_arg_t* ca_nextrec     = NULL;
	ofc_parse_call_arg_t* ca_number      = NULL;
	ofc_parse_call_arg_t* ca_opened      = NULL;
	ofc_parse_call_arg_t* ca_pad         = NULL;
	ofc_parse_call_arg_t* ca_position    = NULL;
	ofc_parse_call_arg_t* ca_read        = NULL;
	ofc_parse_call_arg_t* ca_readwrite   = NULL;
	ofc_parse_call_arg_t* ca_recl        = NULL;
	ofc_parse_call_arg_t* ca_sequential  = NULL;
	ofc_parse_call_arg_t* ca_unformatted = NULL;
	ofc_parse_call_arg_t* ca_write       = NULL;

	unsigned i;
	for (i = 0; i < stmt->io.params->count; i++)
	{
		ofc_parse_call_arg_t* param
			= stmt->io.params->call_arg[i];
		if (!param) continue;

		if (ofc_sparse_ref_empty(param->name))
		{
			if (i >= 1)
			{
				ofc_sparse_ref_error(param->src,
					"Un-named parameter %u has no meaning in INQUIRE.", i);
				return NULL;
			}

			if (i == 0)
			{
				ca_unit = param;
			}
		}
		else if (ofc_str_ref_equal_strz_ci(param->name.string, "UNIT"))
		{
			if (ca_unit)
			{
				ofc_sparse_ref_error(param->src,
					"Re-definition of UNIT in INQUIRE.");
				return NULL;
			}

			ca_unit = param;
		}
		else if (ofc_str_ref_equal_strz_ci(param->name.string, "ACCESS"))
		{
			if (ca_access)
			{
				ofc_sparse_ref_error(param->src,
					"Re-definition of ACCESS in INQUIRE.");
				return NULL;
			}

			ca_access = param;
		}
		else if (ofc_str_ref_equal_strz_ci(param->name.string, "ACTION"))
		{
			if (ca_action)
			{
				ofc_sparse_ref_error(param->src,
					"Re-definition of ACTION in INQUIRE.");
				return NULL;
			}

			ca_action = param;
		}
		else if (ofc_str_ref_equal_strz_ci(param->name.string, "BLANK"))
		{
			if (ca_blank)
			{
				ofc_sparse_ref_error(param->src,
					"Re-definition of BLANK in INQUIRE.");
				return NULL;
			}

			ca_blank = param;
		}
		else if (ofc_str_ref_equal_strz_ci(param->name.string, "DELIM"))
		{
			if (ca_delim)
			{
				ofc_sparse_ref_error(param->src,
					"Re-definition of DELIM in INQUIRE.");
				return NULL;
			}

			ca_delim = param;
		}
		else if (ofc_str_ref_equal_strz_ci(param->name.string, "DIRECT"))
		{
			if (ca_direct)
			{
				ofc_sparse_ref_error(param->src,
					"Re-definition of DIRECT in INQUIRE.");
				return NULL;
			}

			ca_direct = param;
		}
		else if (ofc_str_ref_equal_strz_ci(param->name.string, "ERR"))
		{
			if (ca_err)
			{
				ofc_sparse_ref_error(param->src,
					"Re-definition of ERR in INQUIRE.");
				return NULL;
			}

			ca_err = param;
		}
		else if (ofc_str_ref_equal_strz_ci(param->name.string, "EXIST"))
		{
			if (ca_exist)
			{
				ofc_sparse_ref_error(param->src,
					"Re-definition of EXIST in INQUIRE.");
				return NULL;
			}

			ca_exist = param;
		}
		else if (ofc_str_ref_equal_strz_ci(param->name.string, "FILE"))
		{
			if (ca_file)
			{
				ofc_sparse_ref_error(param->src,
					"Re-definition of FILE in INQUIRE.");
				return NULL;
			}

			ca_file = param;
		}
		else if (ofc_str_ref_equal_strz_ci(param->name.string, "FORM"))
		{
			if (ca_form)
			{
				ofc_sparse_ref_error(param->src,
					"Re-definition of FORM in INQUIRE.");
				return NULL;
			}

			ca_form = param;
		}
		else if (ofc_str_ref_equal_strz_ci(param->name.string, "FORMATTED"))
		{
			if (ca_formatted)
			{
				ofc_sparse_ref_error(param->src,
					"Re-definition of FORMATTED in INQUIRE.");
				return NULL;
			}

			ca_formatted = param;
		}
		else if (ofc_str_ref_equal_strz_ci(param->name.string, "IOSTAT"))
		{
			if (ca_iostat)
			{
				ofc_sparse_ref_error(param->src,
					"Re-definition of IOSTAT in INQUIRE.");
				return NULL;
			}

			ca_iostat = param;
		}
		else if (ofc_str_ref_equal_strz_ci(param->name.string, "NAME"))
		{
			if (ca_name)
			{
				ofc_sparse_ref_error(param->src,
					"Re-definition of NAME in INQUIRE.");
				return NULL;
			}

			ca_name = param;
		}
		else if (ofc_str_ref_equal_strz_ci(param->name.string, "NAMED"))
		{
			if (ca_named)
			{
				ofc_sparse_ref_error(param->src,
					"Re-definition of NAMED in INQUIRE.");
				return NULL;
			}

			ca_named = param;
		}
		else if (ofc_str_ref_equal_strz_ci(param->name.string, "NEXTREC"))
		{
			if (ca_nextrec)
			{
				ofc_sparse_ref_error(param->src,
					"Re-definition of NEXTREC in INQUIRE.");
				return NULL;
			}

			ca_nextrec = param;
		}
		else if (ofc_str_ref_equal_strz_ci(param->name.string, "NUMBER"))
		{
			if (ca_number)
			{
				ofc_sparse_ref_error(param->src,
					"Re-definition of NUMBER in INQUIRE.");
				return NULL;
			}

			ca_number = param;
		}
		else if (ofc_str_ref_equal_strz_ci(param->name.string, "OPENED"))
		{
			if (ca_opened)
			{
				ofc_sparse_ref_error(param->src,
					"Re-definition of OPENED in INQUIRE.");
				return NULL;
			}

			ca_opened = param;
		}
		else if (ofc_str_ref_equal_strz_ci(param->name.string, "PAD"))
		{
			if (ca_pad)
			{
				ofc_sparse_ref_error(param->src,
					"Re-definition of PAD in INQUIRE.");
				return NULL;
			}

			ca_pad = param;
		}
		else if (ofc_str_ref_equal_strz_ci(param->name.string, "POSITION"))
		{
			if (ca_position)
			{
				ofc_sparse_ref_error(param->src,
					"Re-definition of POSITION in INQUIRE.");
				return NULL;
			}

			ca_position = param;
		}
		else if (ofc_str_ref_equal_strz_ci(param->name.string, "READ"))
		{
			if (ca_read)
			{
				ofc_sparse_ref_error(param->src,
					"Re-definition of READ in INQUIRE.");
				return NULL;
			}

			ca_read = param;
		}
		else if (ofc_str_ref_equal_strz_ci(param->name.string, "READWRITE"))
		{
			if (ca_readwrite)
			{
				ofc_sparse_ref_error(param->src,
					"Re-definition of READWRITE in INQUIRE.");
				return NULL;
			}

			ca_readwrite = param;
		}
		else if (ofc_str_ref_equal_strz_ci(param->name.string, "RECL"))
		{
			if (ca_recl)
			{
				ofc_sparse_ref_error(param->src,
					"Re-definition of RECL in INQUIRE.");
				return NULL;
			}

			ca_recl = param;
		}
		else if (ofc_str_ref_equal_strz_ci(param->name.string, "SEQUENTIAL"))
		{
			if (ca_sequential)
			{
				ofc_sparse_ref_error(param->src,
					"Re-definition of SEQUENTIAL in INQUIRE.");
				return NULL;
			}

			ca_sequential = param;
		}
		else if (ofc_str_ref_equal_strz_ci(param->name.string, "UNFORMATTED"))
		{
			if (ca_unformatted)
			{
				ofc_sparse_ref_error(param->src,
					"Re-definition of UNFORMATTED in INQUIRE.");
				return NULL;
			}

			ca_unformatted = param;
		}
		else if (ofc_str_ref_equal_strz_ci(param->name.string, "WRITE"))
		{
			if (ca_write)
			{
				ofc_sparse_ref_error(param->src,
					"Re-definition of WRITE in INQUIRE.");
				return NULL;
			}

			ca_write = param;
		}
		else
		{
			ofc_sparse_ref_error(param->src,
				"Unrecognized paramater %u name '%.*s' in INQUIRE.",
				i, param->name.string.size, param->name.string.base);
			return NULL;
		}
	}

	if (!ca_unit && !ca_file)
	{
		ofc_sparse_ref_error(stmt->src,
			"No UNIT or FILE defined in INQUIRE.");
		return NULL;
	}
	else if (ca_unit && ca_file)
	{
		ofc_sparse_ref_error(stmt->src,
			"UNIT and FILE can't be specified at the same time in INQUIRE.");
		return NULL;
	}

	if (ca_unit && (ca_unit->type == OFC_PARSE_CALL_ARG_EXPR))
	{
		s.io_inquire.unit = ofc_sema_expr(
			scope, ca_unit->expr);
		if (!s.io_inquire.unit) return NULL;

		const ofc_sema_type_t* etype
			= ofc_sema_expr_type(s.io_inquire.unit);
		if (!etype)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		if (!ofc_sema_type_is_integer(etype))
		{
			ofc_sparse_ref_error(stmt->src,
				"UNIT must be of type INTEGER in INQUIRE");
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		if (!ofc_sema_expr_validate_uint(s.io_inquire.unit))
		{
			ofc_sparse_ref_error(stmt->src,
			   "UNIT must be a positive INTEGER in INQUIRE");
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}
	}
	else if (ca_unit)
	{
		ofc_sparse_ref_error(stmt->src,
			"UNIT must be an INTEGER expression in INQUIRE");
		return NULL;
	}

	if (ca_access)
	{
		s.io_inquire.access = ofc_sema_lhs_from_expr(
			scope, ca_access->expr);
		if (!s.io_inquire.access)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		const ofc_sema_type_t* etype
			= ofc_sema_lhs_type(s.io_inquire.access);
		if (!etype)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		if (!ofc_sema_type_is_character(etype))
		{
			ofc_sparse_ref_error(stmt->src,
				"ACCESS must be a CHARACTER variable in INQUIRE");
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}
	}

	if (ca_action)
	{
		s.io_inquire.action = ofc_sema_lhs_from_expr(
			scope, ca_action->expr);
		if (!s.io_inquire.action)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		const ofc_sema_type_t* etype
			= ofc_sema_lhs_type(s.io_inquire.action);
		if (!etype)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		if (!ofc_sema_type_is_character(etype))
		{
			ofc_sparse_ref_error(stmt->src,
				"ACTION must be a CHARACTER variable in INQUIRE");
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}
	}

	if (ca_blank)
	{
		s.io_inquire.blank = ofc_sema_lhs_from_expr(
			scope, ca_blank->expr);
		if (!s.io_inquire.blank)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		const ofc_sema_type_t* etype
			= ofc_sema_lhs_type(s.io_inquire.blank);
		if (!etype)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		if (!ofc_sema_type_is_character(etype))
		{
			ofc_sparse_ref_error(stmt->src,
				"BLANK must be a CHARACTER variable in INQUIRE");
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}
	}

	if (ca_delim)
	{
		s.io_inquire.delim = ofc_sema_lhs_from_expr(
			scope, ca_delim->expr);
		if (!s.io_inquire.delim)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		const ofc_sema_type_t* etype
			= ofc_sema_lhs_type(s.io_inquire.delim);
		if (!etype)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		if (!ofc_sema_type_is_character(etype))
		{
			ofc_sparse_ref_error(stmt->src,
				"DELIM must be a CHARACTER variable in INQUIRE");
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}
	}

	if (ca_direct)
	{
		s.io_inquire.direct = ofc_sema_lhs_from_expr(
			scope, ca_direct->expr);
		if (!s.io_inquire.direct)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		const ofc_sema_type_t* etype
			= ofc_sema_lhs_type(s.io_inquire.direct);
		if (!etype)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		if (!ofc_sema_type_is_character(etype))
		{
			ofc_sparse_ref_error(stmt->src,
				"DIRECT must be a CHARACTER variable in INQUIRE");
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}
	}

	if (ca_err)
	{
		s.io_inquire.err = ofc_sema_expr(
			scope, ca_err->expr);
		if (!s.io_inquire.err)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		if (!ofc_sema_io_check_label(
			scope, stmt, false,
			s.io_inquire.err, NULL))
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}
	}

	if (ca_exist)
	{
		s.io_inquire.exist = ofc_sema_lhs_from_expr(
			scope, ca_exist->expr);
		if (!s.io_inquire.exist)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		const ofc_sema_type_t* etype
			= ofc_sema_lhs_type(s.io_inquire.exist);
		if (!etype)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}
		if (!ofc_sema_type_is_logical(etype))
		{
			ofc_sparse_ref_error(stmt->src,
				"EXIST must be a LOGICAL variable in INQUIRE");
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}
	}

	if (ca_file)
	{
		s.io_inquire.file = ofc_sema_expr(
			scope, ca_file->expr);
		if (!s.io_inquire.file)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		const ofc_sema_type_t* etype
			= ofc_sema_expr_type(s.io_inquire.file);
		if (!etype)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		if (!ofc_sema_type_is_character(etype))
		{
			ofc_sparse_ref_error(stmt->src,
				"FILE must be a CHARACTER expression in INQUIRE");
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}
	}

	if (ca_form)
	{
		s.io_inquire.form = ofc_sema_lhs_from_expr(
			scope, ca_form->expr);
		if (!s.io_inquire.form)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		const ofc_sema_type_t* etype
			= ofc_sema_lhs_type(s.io_inquire.form);
		if (!etype)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		if (!ofc_sema_type_is_character(etype))
		{
			ofc_sparse_ref_error(stmt->src,
				"FORM must be a CHARACTER variable in INQUIRE");
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}
	}

	if (ca_formatted)
	{
		s.io_inquire.formatted = ofc_sema_lhs_from_expr(
			scope, ca_formatted->expr);
		if (!s.io_inquire.formatted)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		const ofc_sema_type_t* etype
			= ofc_sema_lhs_type(s.io_inquire.formatted);
		if (!etype)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		if (!ofc_sema_type_is_character(etype))
		{
			ofc_sparse_ref_error(stmt->src,
				"FORMATTED must be a CHARACTER variable in INQUIRE");
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}
	}

	if (ca_iostat)
	{
		s.io_inquire.iostat = ofc_sema_lhs_from_expr(
			scope, ca_iostat->expr);
		if (!s.io_inquire.iostat)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		const ofc_sema_type_t* etype
			= ofc_sema_lhs_type(s.io_inquire.iostat);
		if (!etype)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		if (!ofc_sema_type_is_integer(etype))
		{
			ofc_sparse_ref_error(stmt->src,
				"IOSTAT must be of type INTEGER in INQUIRE");
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}
	}

	if (ca_name)
	{
		s.io_inquire.name = ofc_sema_lhs_from_expr(
			scope, ca_name->expr);
		if (!s.io_inquire.name)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		const ofc_sema_type_t* etype
			= ofc_sema_lhs_type(s.io_inquire.name);
		if (!etype)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		if (!ofc_sema_type_is_character(etype))
		{
			ofc_sparse_ref_error(stmt->src,
				"NAME must be a CHARACTER variable in INQUIRE");
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}
	}

	if (ca_named)
	{
		s.io_inquire.named = ofc_sema_lhs_from_expr(
			scope, ca_named->expr);
		if (!s.io_inquire.named)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		const ofc_sema_type_t* etype
			= ofc_sema_lhs_type(s.io_inquire.named);
		if (!etype)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		if (!ofc_sema_type_is_logical(etype))
		{
			ofc_sparse_ref_error(stmt->src,
				"NAMED must be a LOGICAL variable in INQUIRE");
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}
	}

	if (ca_nextrec)
	{
		s.io_inquire.nextrec = ofc_sema_lhs_from_expr(
			scope, ca_nextrec->expr);
		if (!s.io_inquire.nextrec)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		const ofc_sema_type_t* etype
			= ofc_sema_lhs_type(s.io_inquire.nextrec);
		if (!etype)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		if (!ofc_sema_type_is_integer(etype))
		{
			ofc_sparse_ref_error(stmt->src,
				"NEXTREC must be of type INTEGER in INQUIRE");
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}
	}

	if (ca_number)
	{
		s.io_inquire.number = ofc_sema_lhs_from_expr(
			scope, ca_number->expr);
		if (!s.io_inquire.number)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		const ofc_sema_type_t* etype
			= ofc_sema_lhs_type(s.io_inquire.number);
		if (!etype)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		if (!ofc_sema_type_is_integer(etype))
		{
			ofc_sparse_ref_error(stmt->src,
				"NUMBER must be an INTEGER variable in INQUIRE");
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}
	}

	if (ca_opened)
	{
		s.io_inquire.opened = ofc_sema_lhs_from_expr(
			scope, ca_opened->expr);
		if (!s.io_inquire.opened)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		const ofc_sema_type_t* etype
			= ofc_sema_lhs_type(s.io_inquire.opened);
		if (!etype)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		if (!ofc_sema_type_is_logical(etype))
		{
			ofc_sparse_ref_error(stmt->src,
				"OPENED must be a LOGICAL variable in INQUIRE");
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}
	}

	if (ca_pad)
	{
		s.io_inquire.pad = ofc_sema_lhs_from_expr(
			scope, ca_pad->expr);
		if (!s.io_inquire.pad)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		const ofc_sema_type_t* etype
			= ofc_sema_lhs_type(s.io_inquire.pad);
		if (!etype)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		if (!ofc_sema_type_is_character(etype))
		{
			ofc_sparse_ref_error(stmt->src,
				"PAD must be a CHARACTER variable in INQUIRE");
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}
	}

	if (ca_position)
	{
		s.io_inquire.position = ofc_sema_lhs_from_expr(
			scope, ca_position->expr);
		if (!s.io_inquire.position)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		const ofc_sema_type_t* etype
			= ofc_sema_lhs_type(s.io_inquire.position);
		if (!etype)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		if (!ofc_sema_type_is_character(etype))
		{
			ofc_sparse_ref_error(stmt->src,
				"POSITION must be a CHARACTER variable in INQUIRE");
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}
	}

	if (ca_read)
	{
		s.io_inquire.read = ofc_sema_lhs_from_expr(
			scope, ca_read->expr);
		if (!s.io_inquire.read)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		const ofc_sema_type_t* etype
			= ofc_sema_lhs_type(s.io_inquire.read);
		if (!etype)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		if (!ofc_sema_type_is_character(etype))
		{
			ofc_sparse_ref_error(stmt->src,
				"READ must be a CHARACTER variable in INQUIRE");
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}
	}

	if (ca_readwrite)
	{
		s.io_inquire.readwrite = ofc_sema_lhs_from_expr(
			scope, ca_readwrite->expr);
		if (!s.io_inquire.readwrite)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		const ofc_sema_type_t* etype
			= ofc_sema_lhs_type(s.io_inquire.readwrite);
		if (!etype)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		if (!ofc_sema_type_is_character(etype))
		{
			ofc_sparse_ref_error(stmt->src,
				"READWRITE must be a CHARACTER variable in INQUIRE");
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}
	}

	if (ca_recl)
	{
		s.io_inquire.recl = ofc_sema_lhs_from_expr(
			scope, ca_recl->expr);
		if (!s.io_inquire.recl)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		const ofc_sema_type_t* etype
			= ofc_sema_lhs_type(s.io_inquire.recl);
		if (!etype)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		if (!ofc_sema_type_is_integer(etype))
		{
			ofc_sparse_ref_error(stmt->src,
				"RECL must be an INTEGER variable in INQUIRE");
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}
	}

	if (ca_sequential)
	{
		s.io_inquire.sequential = ofc_sema_lhs_from_expr(
			scope, ca_sequential->expr);
		if (!s.io_inquire.sequential)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		const ofc_sema_type_t* etype
			= ofc_sema_lhs_type(s.io_inquire.sequential);
		if (!etype)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		if (!ofc_sema_type_is_character(etype))
		{
			ofc_sparse_ref_error(stmt->src,
				"SEQUENTIAL must be a CHARACTER variable in INQUIRE");
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}
	}

	if (ca_unformatted)
	{
		s.io_inquire.unformatted = ofc_sema_lhs_from_expr(
			scope, ca_unformatted->expr);
		if (!s.io_inquire.unformatted)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		const ofc_sema_type_t* etype
			= ofc_sema_lhs_type(s.io_inquire.unformatted);
		if (!etype)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		if (!ofc_sema_type_is_character(etype))
		{
			ofc_sparse_ref_error(stmt->src,
				"UNFORMATTED must be a CHARACTER variable in INQUIRE");
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}
	}

	if (ca_write)
	{
		s.io_inquire.write = ofc_sema_lhs_from_expr(
			scope, ca_write->expr);
		if (!s.io_inquire.write)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		const ofc_sema_type_t* etype
			= ofc_sema_lhs_type(s.io_inquire.write);
		if (!etype)
		{
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}

		if (!ofc_sema_type_is_character(etype))
		{
			ofc_sparse_ref_error(stmt->src,
				"WRITE must be a CHARACTER variable in INQUIRE");
			ofc_sema_stmt_io_inquire__cleanup(s);
			return NULL;
		}
	}

	ofc_sema_stmt_t* as
		= ofc_sema_stmt_alloc(s);
	if (!as)
	{
		ofc_sema_stmt_io_inquire__cleanup(s);
		return NULL;
	}
	return as;
}
Ejemplo n.º 2
0
ofc_sema_stmt_t* ofc_sema_stmt_io_read(
	ofc_sema_scope_t* scope,
	const ofc_parse_stmt_t* stmt)
{
	if (!scope || !stmt
		|| (stmt->type != OFC_PARSE_STMT_IO_READ)
		|| !stmt->io_read.params)
		return NULL;

	ofc_sema_stmt_t s;
	s.type = OFC_SEMA_STMT_IO_READ;
	s.io_read.unit         = NULL;
	s.io_read.stdin        = false;
	s.io_read.format       = NULL;
	s.io_read.format_ldio  = false;
	s.io_read.formatted    = false;
	s.io_read.iostat       = NULL;
	s.io_read.rec          = NULL;
	s.io_read.err          = NULL;
	s.io_read.iolist       = NULL;
	s.io_read.advance      = NULL;
	s.io_read.end          = NULL;
	s.io_read.eor          = NULL;
	s.io_read.size         = NULL;

	ofc_parse_call_arg_t* ca_unit    = NULL;
	ofc_parse_call_arg_t* ca_format  = NULL;
	ofc_parse_call_arg_t* ca_iostat  = NULL;
	ofc_parse_call_arg_t* ca_rec     = NULL;
	ofc_parse_call_arg_t* ca_err     = NULL;
	ofc_parse_call_arg_t* ca_advance = NULL;
	ofc_parse_call_arg_t* ca_end     = NULL;
	ofc_parse_call_arg_t* ca_eor     = NULL;
	ofc_parse_call_arg_t* ca_size    = NULL;

	if (stmt->io_read.has_brakets)
	{
		unsigned i;
		for (i = 0; i < stmt->io_read.params->count; i++)
		{
			ofc_parse_call_arg_t* param
				= stmt->io_read.params->call_arg[i];
			if (!param) continue;

			if (ofc_sparse_ref_empty(param->name))
			{
				if (i >= 2)
				{
					ofc_sparse_ref_error(param->src,
						"Un-named parameter %u has no meaning in READ.", i);
					return NULL;
				}

				if (i == 0)
				{
					ca_unit = param;
				}
				else
				{
					if (!ca_unit)
					{
						ofc_sparse_ref_error(param->src,
							"Un-named format parameter only valid after UNIT in READ.");
						return NULL;
					}

					ca_format = param;
				}
			}
			else if (ofc_str_ref_equal_strz_ci(param->name.string, "UNIT"))
			{
				if (ca_unit)
				{
					ofc_sparse_ref_error(param->src,
						"Re-definition of UNIT in READ.");
					return NULL;
				}

				ca_unit = param;
			}
			else if (ofc_str_ref_equal_strz_ci(param->name.string, "FMT"))
			{
				if (ca_format)
				{
					ofc_sparse_ref_error(param->src,
						"Re-definition of FMT in READ.");
					return NULL;
				}

				ca_format = param;
			}
			else if (ofc_str_ref_equal_strz_ci(param->name.string, "IOSTAT"))
			{
				if (ca_iostat)
				{
					ofc_sparse_ref_error(param->src,
						"Re-definition of IOSTAT in READ.");
					return NULL;
				}

				ca_iostat = param;
			}
			else if (ofc_str_ref_equal_strz_ci(param->name.string, "REC"))
			{
				if (ca_rec)
				{
					ofc_sparse_ref_error(param->src,
						"Re-definition of REC in READ.");
					return NULL;
				}

				ca_rec = param;
			}
			else if (ofc_str_ref_equal_strz_ci(param->name.string, "ERR"))
			{
				if (ca_err)
				{
					ofc_sparse_ref_error(param->src,
						"Re-definition of ERR in READ.");
					return NULL;
				}

				ca_err = param;
			}
			else if (ofc_str_ref_equal_strz_ci(param->name.string, "ADVANCE"))
			{
				if (ca_advance)
				{
					ofc_sparse_ref_error(param->src,
						"Re-definition of ADVANCE in READ.");
					return NULL;
				}

				ca_advance = param;
			}
			else if (ofc_str_ref_equal_strz_ci(param->name.string, "END"))
			{
				if (ca_end)
				{
					ofc_sparse_ref_error(param->src,
						"Re-definition of END in READ.");
					return NULL;
				}

				ca_end = param;
			}
			else if (ofc_str_ref_equal_strz_ci(param->name.string, "SIZE"))
			{
				if (ca_size)
				{
					ofc_sparse_ref_error(param->src,
						"Re-definition of SIZE in READ.");
					return NULL;
				}

				ca_size = param;
			}
			else
			{
				ofc_sparse_ref_error(param->src,
					"Unrecognized paramater %u name '%.*s' in READ.",
					i, param->name.string.size, param->name.string.base);
				return NULL;
			}
		}

		if (!ca_unit)
		{
			ofc_sparse_ref_error(stmt->src,
				"No UNIT defined in READ.");
			return NULL;
		}
	}
	else
	{
		ca_format = stmt->io_read.params->call_arg[0];
	}

	if (ca_unit && (ca_unit->type == OFC_PARSE_CALL_ARG_ASTERISK))
	{
		s.io_read.stdin = true;
	}
	else if (ca_unit && (ca_unit->type == OFC_PARSE_CALL_ARG_EXPR))
	{
		s.io_read.unit = ofc_sema_expr(
			scope, ca_unit->expr);
		if (!s.io_read.unit) return NULL;

		const ofc_sema_type_t* etype
			= ofc_sema_expr_type(s.io_read.unit);
		if (!etype)
		{
			ofc_sema_stmt_io_read__cleanup(s);
			return NULL;
		}

		if (!ofc_sema_type_is_character(etype)
			&& (!ofc_sema_type_is_integer(etype)
				|| !ofc_sema_expr_validate_uint(s.io_read.unit)))
		{
			ofc_sparse_ref_error(stmt->src,
				   "UNIT must be a positive INTEGER "
				   "or a CHARACTER expression in READ");
			ofc_sema_stmt_io_read__cleanup(s);
			return NULL;
		}
	}
	else if (ca_unit)
	{
		ofc_sparse_ref_error(stmt->src,
			"UNIT must be an INTEGER or CHARACTER "
			"expression, or asterisk in READ");
		return NULL;
	}
	else
	{
		s.io_read.stdin = true;
	}

	if (ca_format && (ca_format->type == OFC_PARSE_CALL_ARG_ASTERISK))
	{
		s.io_read.format_ldio = true;
		s.io_read.formatted   = true;
	}
	else if (ca_format && (ca_format->type == OFC_PARSE_CALL_ARG_EXPR))
	{
		s.io_read.formatted   = true;

		s.io_read.format = ofc_sema_expr(
			scope, ca_format->expr);
		if (!s.io_read.format)
		{
			ofc_sema_stmt_io_read__cleanup(s);
			return NULL;
		}

		const ofc_sema_type_t* etype
			= ofc_sema_expr_type(s.io_read.format);
		if (!etype)
		{
			ofc_sema_stmt_io_read__cleanup(s);
			return NULL;
		}

		if (ofc_sema_type_is_integer(etype))
		{
			s.io_read.format->is_label  = true;
			s.io_read.format->is_format = true;
		}
		else if (etype->type != OFC_SEMA_TYPE_CHARACTER)
		{
			/* TODO - Support INTEGER array formats. */

			ofc_sparse_ref_error(stmt->src,
				"Format (FMT) must be a label or character string in READ");
			ofc_sema_stmt_io_read__cleanup(s);
			return NULL;
		}
	}
	else if (ca_format)
	{
		ofc_sparse_ref_error(stmt->src,
			"Format (FMT) must be an INTEGER expression or asterisk in READ");
		ofc_sema_stmt_io_read__cleanup(s);
		return NULL;
	}

	bool is_nonadvance = false;
	if (ca_advance && s.io_read.stdin)
	{
		ofc_sparse_ref_error(stmt->src,
			"ADVANCE specifier can only be used with an external UNIT in READ");
		ofc_sema_stmt_io_read__cleanup(s);
		return NULL;
	}
	else if (ca_advance && (!ca_format || s.io_read.format_ldio))
	{
		ofc_sparse_ref_error(stmt->src,
			"ADVANCE specifier can only be used with a formatted input in READ");
		ofc_sema_stmt_io_read__cleanup(s);
		return NULL;
	}
	else if (ca_advance)
	{
		s.io_read.advance = ofc_sema_expr(
			scope, ca_advance->expr);
		if (!s.io_read.advance)
		{
			ofc_sema_stmt_io_read__cleanup(s);
			return NULL;
		}

		const ofc_sema_type_t* etype
			= ofc_sema_expr_type(s.io_read.advance);
		if (!etype)
		{
			ofc_sema_stmt_io_read__cleanup(s);
			return NULL;
		}

		if (etype->type != OFC_SEMA_TYPE_CHARACTER)
		{
			ofc_sparse_ref_error(stmt->src,
				"ADVANCE must be a CHARACTER expression in READ");
			ofc_sema_stmt_io_read__cleanup(s);
			return NULL;
		}
		else
		{
			const ofc_sema_typeval_t* constant
				= ofc_sema_expr_constant(s.io_read.advance);

			is_nonadvance = (constant
				&& ofc_typeval_character_equal_strz_ci(constant, "NO"));
			if (constant && !is_nonadvance
				&& !ofc_typeval_character_equal_strz_ci(constant, "YES"))
			{
				ofc_sparse_ref_error(stmt->src,
					"ADVANCE must be YES/NO in WRITE");
				ofc_sema_stmt_io_read__cleanup(s);
				return NULL;
			}
		}
	}

	if (ca_end)
	{
		s.io_read.end = ofc_sema_expr_label(
			scope, ca_end->expr);
		if (!s.io_read.end)
		{
			ofc_sema_stmt_io_read__cleanup(s);
			return NULL;
		}
	}

	if (ca_eor)
	{
		s.io_read.eor = ofc_sema_expr_label(
			scope, ca_eor->expr);
		if (!s.io_read.eor)
		{
			ofc_sema_stmt_io_read__cleanup(s);
			return NULL;
		}
	}

	if (ca_err)
	{
		s.io_read.err = ofc_sema_expr_label(
			scope, ca_err->expr);
		if (!s.io_read.err)
		{
			ofc_sema_stmt_io_read__cleanup(s);
			return NULL;
		}
	}

	if (ca_iostat)
	{
		s.io_read.iostat = ofc_sema_expr(
			scope, ca_iostat->expr);
		if (!s.io_read.iostat)
		{
			ofc_sema_stmt_io_read__cleanup(s);
			return NULL;
		}

		if (s.io_read.iostat->type != OFC_SEMA_EXPR_LHS)
		{
			ofc_sparse_ref_error(stmt->src,
				"IOSTAT must be a variable in READ");
			ofc_sema_stmt_io_read__cleanup(s);
			return NULL;
		}

		const ofc_sema_type_t* etype
			= ofc_sema_expr_type(s.io_read.iostat);
		if (!etype)
		{
			ofc_sema_stmt_io_read__cleanup(s);
			return NULL;
		}

		if (!ofc_sema_type_is_integer(etype))
		{
			ofc_sparse_ref_error(stmt->src,
				"IOSTAT must be of type INTEGER in READ");
			ofc_sema_stmt_io_read__cleanup(s);
			return NULL;
		}
	}

	if (ca_rec && (s.io_read.format_ldio || ca_end))
	{
		ofc_sparse_ref_error(stmt->src,
			"REC specifier not compatible with END,"
			" NML or list-directed data transfer in READ");
		ofc_sema_stmt_io_read__cleanup(s);
		return NULL;
	}
	else if (ca_rec)
	{
		s.io_read.rec = ofc_sema_expr(
			scope, ca_rec->expr);
		if (!s.io_read.rec)
		{
			ofc_sema_stmt_io_read__cleanup(s);
			return NULL;
		}

		const ofc_sema_type_t* etype
			= ofc_sema_expr_type(s.io_read.rec);
		if (!etype)
		{
			ofc_sema_stmt_io_read__cleanup(s);
			return NULL;
		}

		if (!ofc_sema_type_is_integer(etype))
		{
			ofc_sparse_ref_error(stmt->src,
				"REC must be of type INTEGER in READ");
			ofc_sema_stmt_io_read__cleanup(s);
			return NULL;
		}
	}

	if (ca_size && !is_nonadvance)
	{
		ofc_sparse_ref_error(stmt->src,
			"SIZE not compatible with advancing formatted "
			"sequential data transfer in READ");
		ofc_sema_stmt_io_read__cleanup(s);
		return NULL;
	}
	else if (ca_size)
	{
		if (s.io_read.size->type != OFC_SEMA_EXPR_LHS)
		{
			ofc_sparse_ref_error(stmt->src,
				"SIZE must be a variable in READ");
			ofc_sema_stmt_io_read__cleanup(s);
			return NULL;
		}
		/* TODO - The variable specified in SIZE must
				  not be the same as or associated with any
				  entity in the input/output item list or in
				  the namelist group or with the variable
				  specified in the IOSTAT= specifier */
		const ofc_sema_type_t* etype
			= ofc_sema_expr_type(s.io_read.size);
		if (!etype)
		{
			ofc_sema_stmt_io_read__cleanup(s);
			return NULL;
		}

		if (!ofc_sema_type_is_integer(etype))
		{
			ofc_sparse_ref_error(stmt->src,
				"SIZE must be of type INTEGER in READ");
			ofc_sema_stmt_io_read__cleanup(s);
			return NULL;
		}
	}

	/* Check iolist */
	if (stmt->io_read.iolist)
	{
		s.io_read.iolist
			= ofc_sema_lhs_list_id(
				scope, stmt->io_read.iolist);
		if (!s.io_read.iolist
			|| !ofc_sema_lhs_list_mark_used(
				s.io_read.iolist, true, false))
		{
			ofc_sema_stmt_io_read__cleanup(s);
			return NULL;
		}
	}

	ofc_sema_stmt_t* as
		= ofc_sema_stmt_alloc(s);
	if (!as)
	{
		ofc_sema_stmt_io_read__cleanup(s);
		return NULL;
	}
	return as;
}
Ejemplo n.º 3
0
static ofc_sema_lhs_t* ofc_sema__lhs(
	ofc_sema_scope_t* scope,
	const ofc_parse_lhs_t* lhs,
	bool is_expr, bool force_local,
	bool is_dummy_arg)
{
	if (!scope || !lhs)
		return NULL;

	switch (lhs->type)
	{
		case OFC_PARSE_LHS_IMPLICIT_DO:
			ofc_sparse_ref_error(lhs->src,
				"Can't resolve implicit do to single %s.",
				(is_expr ? "primary expression": "LHS"));
			return NULL;

		case OFC_PARSE_LHS_STAR_LEN:
			ofc_sparse_ref_error(lhs->src,
				"Can't resolve star length to %s.",
				(is_expr ? "primary expression": "LHS"));
			return NULL;

		case OFC_PARSE_LHS_MEMBER_TYPE:
		case OFC_PARSE_LHS_MEMBER_STRUCTURE:
			{
				ofc_sema_lhs_t* parent = ofc_sema__lhs(
					scope, lhs->parent, is_expr, force_local, is_dummy_arg);
				if (!parent) return NULL;

				ofc_sema_structure_t* structure
					= ofc_sema_lhs_structure(parent);
				if (!structure)
				{
					ofc_sparse_ref_error(lhs->src,
						"Attempting to dereference member of a variable"
						" that's not a structure.");
					ofc_sema_lhs_delete(parent);
					return NULL;
				}

				if ((lhs->type == OFC_PARSE_LHS_MEMBER_TYPE)
					&& !ofc_sema_structure_is_derived_type(structure))
				{
					ofc_sparse_ref_warning(lhs->src,
						"Dereferencing member of a VAX struct using F90 syntax");
				}
				else if ((lhs->type == OFC_PARSE_LHS_MEMBER_STRUCTURE)
					&& ofc_sema_structure_is_derived_type(structure))
				{
					ofc_sparse_ref_warning(lhs->src,
						"Dereferencing member of an F90 TYPE using VAX syntax");
				}

				ofc_sema_decl_t* member
					= ofc_sema_structure_member_get_decl_name(
						structure, lhs->member.name.string);
				if (!member)
				{
					ofc_sparse_ref_error(lhs->src,
						"Dereferencing undefined structure member");
					ofc_sema_lhs_delete(parent);
					return NULL;
				}

				ofc_sema_lhs_t* slhs
					= ofc_sema_lhs_member(
						parent, member);
				ofc_sema_lhs_delete(parent);
				return slhs;
			}

		case OFC_PARSE_LHS_ARRAY:
			{
				ofc_sema_lhs_t* parent = ofc_sema__lhs(
					scope, lhs->parent, is_expr, force_local, is_dummy_arg);
				if (!parent) return NULL;

				if (!ofc_sema_lhs_is_array(parent))
				{
					if (!ofc_sema_type_is_character(
						parent->data_type))
					{
						ofc_sparse_ref_error(lhs->src,
							"Attempting to index a variable that's not an array");
						ofc_sema_lhs_delete(parent);
						return NULL;
					}

					ofc_sema_lhs_t* slhs
						= ofc_sema_lhs_substring(
							scope, parent, lhs->array.index);
					ofc_sema_lhs_delete(parent);
					return slhs;
				}

				ofc_sema_array_index_t* index
					= ofc_sema_array_index(scope,
						ofc_sema_lhs_array(parent),
						lhs->array.index);
				if (index)
				{
					ofc_sema_lhs_t* slhs
						= ofc_sema_lhs_index(parent, index);
					ofc_sema_lhs_delete(parent);
					if (!slhs)
					{
						ofc_sema_array_index_delete(index);
						return NULL;
					}
					return slhs;
				}

				/* TODO - Don't double-error when an index is out-of-bounds. */

				ofc_sema_array_slice_t* slice
					= ofc_sema_array_slice(scope,
						ofc_sema_lhs_array(parent),
						lhs->array.index);
				if (!slice)
				{
					ofc_sema_lhs_delete(parent);
					return NULL;
				}

				ofc_sema_lhs_t* slhs
					= ofc_sema_lhs_slice(parent, slice);
				ofc_sema_lhs_delete(parent);
				if (!slhs)
				{
					ofc_sema_array_slice_delete(slice);
					return NULL;
				}
				return slhs;
			}

		case OFC_PARSE_LHS_VARIABLE:
			break;

		default:
			return NULL;
	}

	ofc_sema_decl_t* decl
		= ofc_sema_scope_decl_find_create(
			scope, lhs->variable, force_local);
	if (!decl)
	{
		ofc_sparse_ref_error(lhs->src,
			"No declaration for '%.*s' and no valid IMPLICIT rule.",
			lhs->variable.string.size, lhs->variable.string.base);
		return NULL;
	}

	if (!is_expr && !is_dummy_arg
		&& ofc_sema_decl_is_parameter(decl))
	{
		/* TODO - Throw this error for PARAMETER arrays, etc. too. */
		ofc_sparse_ref_error(lhs->src,
			"Assignment to PARAMETER declaration");
		return NULL;
	}

	ofc_sema_lhs_t* slhs
		= (ofc_sema_lhs_t*)malloc(
			sizeof(ofc_sema_lhs_t));
	if (!slhs) return NULL;

	if (!ofc_sema_decl_reference(decl))
	{
		free(slhs);
		return NULL;
	}

	slhs->type      = OFC_SEMA_LHS_DECL;
	slhs->src       = lhs->src;
	slhs->decl      = decl;
	slhs->refcnt    = 0;

	if (is_expr || is_dummy_arg)
	{
		if (!is_dummy_arg
			|| !ofc_sema_decl_is_external(decl))
		{
			if (!ofc_sema_decl_type_finalize(decl))
			{
				ofc_sema_lhs_delete(slhs);
				return NULL;
			}
		}

		if (!ofc_sema_decl_mark_used(decl, false, true))
		{
			ofc_sema_lhs_delete(slhs);
			return NULL;
		}
	}
	slhs->data_type = decl->type;

	return slhs;
}