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OT Bytecode Attributes/CallinFlags
< OT Bytecode Attributes
Revision as of 00:22, 8 April 2010 by Resix.cs.tu-berlin.de (Talk | contribs) (New page: =Attribute CallinFlags= ===Intent=== The CallinFlags attribute is a fixed-length attribute used in the attributes table of method_info structures. ===Location:=== A role method or a call...)
Attribute CallinFlags
Intent
The CallinFlags attribute is a fixed-length attribute used in the attributes table of method_info structures.
Location:
A role method or a callin wrapper.
Content:
An integer encoding the callin flags.
Purpose:
CALLIN_FLAG_OVERRIDING: if set, this method is overriding an inherited version. The OTRE uses this information to realize the inheritance of method bindings. (OTRE internal: This flag prevents the OTRE from generating an empty base-call-surrogate which would wrongly override an inherited (non-empty) version.)
Format:
CallinFlags {
u2 attribute_name_index;
u4 attribute_length;
u2 callin_flags;
}
The items of the CallinFlags structure are as follows:
- attribute_name_index
- The constant_pool entry at that index must be a CONSTANT_Utf8_info representing the string "CallinRoleBaseBindings".
- attribute_length
- The value of the attribute_length item indicates the length of the attribute, excluding the initial six bytes.
- callin_flags
- The value of the callin_flags item is a mask of flags (used to denote ...). The interpretation of each flag, when set, is as shown in the following: