Module any_vec::any_value

AnyValue is concept of type-erased object, that can be moved around without type knowledge.

With default trait implementation, all “consume” operations boils down to move_into. By redefining move_into and Drop¹ behavior - you can have some additional logic on AnyValue consumption. (Consumption - is any operation that “move out” data from AnyValue)

AnyValueSizeless -> AnyValueTypeless -> AnyValue

Usage

Some AnyVec operations will accept and return AnyValue. This allows to move data between AnyVecs in fast, safe, type erased way.

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1. AnyValue could have blanket implementation for Drop as well, but that is unstable Rust now. ↩

Modules

• traits
  Prelude for traits.

Structs

• AnyValueRaw
  AnyValue byte ptr wrapper, that know it’s type.
• AnyValueSizelessRaw
  AnyValueSizeless non-owning byte ptr wrapper, that knows nothing about it’s type.
• AnyValueTypelessRaw
  AnyValueTypeless byte ptr wrapper, that know it’s type size.
• AnyValueWrapper
  Helper struct to convert concrete type to AnyValueMut.
• LazyClone
  Makes AnyValueCloneable actually Cloneable. Clone underlying value on consumption.
• Unknown
  Marker for unknown type.

Traits

• AnyValue
  Type erased value interface.
• AnyValueCloneable
  LazyClone friendly AnyValueSizeless.
• AnyValueMut
  Mutable AnyValue.
• AnyValueSizeless
  AnyValue that doesn’t know its size or type, and can provide only object ptr.
• AnyValueSizelessMut
  Mutable AnyValueSizeless.
• AnyValueTypeless
  AnyValue that doesn’t know it’s type, but know it’s size.
• AnyValueTypelessMut
  Mutable AnyValueTypeless.