scala.pickling

PBuilder

trait PBuilder extends Hintable

A builder of pickled content. This is a mutable API, intended to be called in certain specific ways.

Here are a few static rules that all picklers must follow when using this interface.

1. There will be one endEntry() for every beginEntry() call. 2. There will be one endCollection() for every beginCollection() call. 3. Every beginCollection()/endCollection() pair will be inside a beginEntry()/endEntry() pair. 4. Every putElement() call must happen within a beginCollection()/endCollection() block. 5. Every putField() call must happen within a beginEntry()/endEntry() block. 6. There is no guarantee that putElement() will be called within a beginCollectoin()/endCollection() pair. i.e. we can write empty collections. 7. There is no guarantee that putField will be called within a beginEntry()/endEntry() pair. i.e. if we don't put any fields, this means the entry was for a "primitive" type, at least what The pickling library considers primitives. 8. The order of putField calls in any pickler will be the exact same ordering when unpickling, if the format is compatible.

Here is a list of all types the auto-generated Picklers considers "primitives" and must be directly supported by any PBuilder:

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Abstract Value Members

  1. abstract def beginCollection(length: Int): PBuilder

    Denotes that a collection of elements is about to be pickled.

    Denotes that a collection of elements is about to be pickled.

    Note: This must be called after beginEntry()

    length

    The length of the collection being serialized.

    returns

    A pickler which can serialzie the collection.

  2. abstract def beginEntry(picklee: Any, tag: FastTypeTag[_]): PBuilder

    Called to denote that an object is about to be serialized.

    Called to denote that an object is about to be serialized.

    picklee

    The object to be serialized. This may be a primtiive, in which case it can be immediately serialized (or you can wait unitl endEntry is called).

    tag

    The tag to use when pickling this entry. Tags must be serialized/restored, unless otherwise hinted that it can be elided.

    returns

    A pbuilder instance a pickler can use to serialize the picklee, if it's a complex type.

  3. abstract def endCollection(): Unit

    Denote that we are done serializing the collection.

  4. abstract def endEntry(): Unit

    Call this to denote that the given primitive, collection or structure being pickled is completed.

  5. abstract def hintElidedType(tag: FastTypeTag[_]): PBuilder.this.type

    Hints to the pickle format that we KNOW the type of this field, so it can elide any type hints from the final pickle.

    Hints to the pickle format that we KNOW the type of this field, so it can elide any type hints from the final pickle. During unpickling, this informs the format that it shouldn't look for any type hints in the pickle, but instead use this tag as the unpickle tag key.

    Definition Classes
    Hintable
  6. abstract def hintKnownSize(knownSize: Int): PBuilder.this.type

    Hints at the expected (byte) size of the entry we're about to write.

    Hints at the expected (byte) size of the entry we're about to write..

    Definition Classes
    Hintable
  7. abstract def hintOid(id: Int): PBuilder.this.type

    Hints the object id of the next beginEntry/endEntry calls.

    Hints the object id of the next beginEntry/endEntry calls. If this oid is -1, it implies that the next entry has not been registered in any sharing cache, and should be pickled fully. If the oid != -1, then the pickle format is free to elide the fields of the entry in favor of pickling a scala.pickling.refs.Ref.

    Hint: This is only used during pickling.

    Definition Classes
    Hintable
  8. abstract def pinHints(): PBuilder.this.type

    Locks the hints down to what we've specified, so if you drop into anotehr pickler it retains our information.

    Locks the hints down to what we've specified, so if you drop into anotehr pickler it retains our information.

    Definition Classes
    Hintable
  9. abstract def popHints(): PBuilder.this.type

    Pops to the previously saved set of hints.

    Pops to the previously saved set of hints.

    Definition Classes
    Hintable
  10. abstract def pushHints(): PBuilder.this.type

    Creates a new fresh set of hints, preserving what was hinted before.

    Creates a new fresh set of hints, preserving what was hinted before.

    Definition Classes
    Hintable
  11. abstract def putElement(pickler: (PBuilder) ⇒ Unit): PBuilder

    Places the next element in the serialized collection.

    Places the next element in the serialized collection.

    Note: This must be called after beginCollection().

    pickler

    A callback which is passed a pickler able to serialize the item in the collection.

    returns

    A pickler which can serialize the next element of the collection.

  12. abstract def putField(name: String, pickler: (PBuilder) ⇒ Unit): PBuilder

    Serialize a "field" in a complex structure/object being pickled.

    Serialize a "field" in a complex structure/object being pickled.

    name

    The name of the field to serialize.

    pickler

    A callback which will be passed an appropriate pickler. You should ensure this function will perform a beginEntry()/endEntry() block.

    returns

    A builder for remaining items in the current complex structure being pickled.

  13. abstract def result(): Pickle

    Return the resulting pickle of this builder.

  14. abstract def unpinHints(): PBuilder.this.type

    Unlocks the hints.

    Unlocks the hints.

    Definition Classes
    Hintable

Concrete Value Members

  1. final def !=(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef
  2. final def !=(arg0: Any): Boolean

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  3. final def ##(): Int

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  4. final def ==(arg0: AnyRef): Boolean

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  5. final def ==(arg0: Any): Boolean

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  6. final def asInstanceOf[T0]: T0

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  7. def clone(): AnyRef

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    @throws( ... )
  8. final def eq(arg0: AnyRef): Boolean

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  9. def equals(arg0: Any): Boolean

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  10. def finalize(): Unit

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    @throws( classOf[java.lang.Throwable] )
  11. final def getClass(): Class[_]

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  12. def hashCode(): Int

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  13. final def isInstanceOf[T0]: Boolean

    Definition Classes
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  14. final def ne(arg0: AnyRef): Boolean

    Definition Classes
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  15. final def notify(): Unit

    Definition Classes
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  16. final def notifyAll(): Unit

    Definition Classes
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  17. final def synchronized[T0](arg0: ⇒ T0): T0

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  18. def toString(): String

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  19. final def wait(): Unit

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    @throws( ... )
  20. final def wait(arg0: Long, arg1: Int): Unit

    Definition Classes
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    @throws( ... )
  21. final def wait(arg0: Long): Unit

    Definition Classes
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Inherited from Hintable

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