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Bug 326896

Summary:	[ast] Make Visitor extensible
Product:	[Modeling] OCL	Reporter:	Ed Willink <ed>
Component:	Core	Assignee:	OCL Inbox <mdt-ocl-inbox>
Status:	CLOSED FIXED	QA Contact:
Severity:	normal
Priority:	P3
Version:	3.0.0
Target Milestone:	M7
Hardware:	PC
OS:	Windows Vista
Whiteboard:

Description Ed Willink

2010-10-04 04:31:58 EDT

Visitor currently has a built-in set of per-type dispatches, which cannot be extended.

a) provide a default dispatch e.g. for OclAny that can be overridden by extension functionality.

b) provide an EcoreSwitch-based dispatch in the Visitor for service of this default.

Comment 1 Ed Willink

2012-04-30 15:51:36 EDT

The visitors have been adjusted allowing QVTc and QVTr to extend.

The main adjustment justs supports direct inheritance rather than delegation; much simpler. For the rare case of a multiply inheriting language, a delegation can be performed by the multiply inheriting language.

Comment 2 Ed Willink

2013-05-20 11:37:03 EDT

CLOSED after a year in the RESOLVED state.