Module save_stack 

Save/restore stack for PostScript VM persistence.

Implements copy-on-write save/restore: save records a level, mutations create COW copies, and restore swaps offsets to revert changes.

Structs

SaveLevel

One save level’s state.

SaveRecord

Records one COW copy made during a save level.

SaveSnapshot

Interpreter state captured by save and reinstated by restore.

SaveStack

The save/restore stack.

VmMarks

High-water marks of local VM at the moment of a save.

Enums

StoreType

Which store type a save record refers to.