acpi_parse_object
union acpi_parse_object *Arg; /* arguments and contained ops */
union acpi_parse_object *Parent; /* Parent op */\
union acpi_parse_object *Next; /* Next op */\
union acpi_parse_object *Child;
union acpi_parse_object *ParentMethod;
union acpi_parse_object *StartOp; /* Root of parse tree */
union acpi_parse_object *StartScope;
union acpi_parse_object;
union acpi_parse_object *Op;
union acpi_parse_object *PredicateOp;
union acpi_parse_object *Op; /* Current op being parsed */
union acpi_parse_object **OutOp);