giocache

func (*Cache) Add ¶

func (c *Cache) Add(cb func(op.MacroOp)) (op.CallOp, ID)

Add adds the given call to the cache and returns an ID for future use.

func (*Cache) Clear ¶

func (c *Cache) Clear()

Clear removes all entries from the cache.

func (*Cache) Context ¶

func (c *Cache) Context(constraints layout.Constraints, metric unit.Metric) layout.Context

Context returns a graphical context for the cache with the given constraints and metric.

TODO: Consider making constraints cache-wide, provide an update function, and invalidate the cache when the constraints (and/or metric?) change.

func (*Cache) Delete ¶

func (c *Cache) Delete(id ID)

Delete marks the call in the cache with the given ID as dead.

func (*Cache) Get ¶

func (c *Cache) Get(id ID) (call op.CallOp, ok bool)

Get retrieves a call from the cache for id. The call is only valid until the cache is cleared or purged. It returns false if the id is no longer valid.

func (*Cache) Purge ¶

func (c *Cache) Purge(threshold int) bool

Purge clears the cache if the number of dead items exceed threshold. It returns true if the cache was cleared.

func (ID) OK ¶

func (id ID) OK() bool

OK returns true if the ID is valid.