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It's already propagated for List. The problem occurs when accessing/modifying chunked Sets and Maps that have read from the DB then modified. For example: set := ds.Head().(Set) set = set.Remove(42) // These will both crash: set.Has(43) set.Insert(43) If |set| is a compoundSet then the new Set returned from Remove won't have a ChunkSource. - When Has is called, the set will attempt to read in chunks, but there is no longer a ChunkSource to read from. - When Insert is called, the set will re-chunk, which may require reading in more chunks.
45 lines
1.2 KiB
Go
45 lines
1.2 KiB
Go
package types
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type Map interface {
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Value
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First() (Value, Value)
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Len() uint64
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Empty() bool
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Has(key Value) bool
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Get(key Value) Value
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MaybeGet(key Value) (v Value, ok bool)
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Set(key Value, val Value) Map
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SetM(kv ...Value) Map
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Remove(k Value) Map
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Iter(cb mapIterCallback)
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IterAll(cb mapIterAllCallback)
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IterAllP(concurrency int, f mapIterAllCallback)
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Filter(cb mapFilterCallback) Map
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elemTypes() []Type
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}
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type indexOfMapFn func(m mapData, v Value) int
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type mapIterCallback func(key, value Value) (stop bool)
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type mapIterAllCallback func(key, value Value)
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type mapFilterCallback func(key, value Value) (keep bool)
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var mapType = MakeCompoundType(MapKind, MakePrimitiveType(ValueKind), MakePrimitiveType(ValueKind))
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func NewMap(kv ...Value) Map {
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return NewTypedMap(mapType, kv...)
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}
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func NewTypedMap(t Type, kv ...Value) Map {
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return newTypedMap(t, buildMapData(mapData{}, kv, t)...)
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}
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func newTypedMap(t Type, entries ...mapEntry) Map {
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seq := newEmptySequenceChunker(makeMapLeafChunkFn(t, nil), newOrderedMetaSequenceChunkFn(t, nil), newMapLeafBoundaryChecker(), newOrderedMetaSequenceBoundaryChecker)
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for _, entry := range entries {
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seq.Append(entry)
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}
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return seq.Done().(Map)
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}
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