Module undo

Experimental: Wrapper around netlist, layout and L2N structures that allows undoing of operations.

This is work in progress. Missing things are:

• Undoing a operation on the hierarchy does not necessarily restore netlist, layout and l2n information.
• Undoing a netlist operation does not restore l2n information.
• Undoing a layout operation does not restore l2n information.
• Undoing does not restore user-defined properties.

Caveat

Undoing removal of some objects does not preserve the ID of the object. For example if a cell is deleted this can be undone. The restored cell, pins, instances, etc. will have the same properties but different IDs.

Structs

Undo

Wrapper around netlist, layout and L2N structures that allows undoing of operations.

Enums

HierarchyUndoOp

Undo operation for hierarchy operations.

L2NUndoOp

Undo operation for L2NEdit operations.

LayoutUndoOp

Undo operation for LayoutEdit operations.

NetlistUndoOp

Undo operations on the netlist.