Packages

c

firrtl.transforms

IdentityTransform

class IdentityTransform extends Transform

Transform that applies an identity function. This returns an unmodified CircuitState.

Annotations
@deprecated
Deprecated

(Since version FIRRTL 1.3) mix-in firrtl.options.IdentityLike[CircuitState]. IdentityTransform will be removed in 1.4.

Source
IdentityTransform.scala
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Inherited
  1. IdentityTransform
  2. Transform
  3. DependencyAPI
  4. TransformLike
  5. LazyLogging
  6. AnyRef
  7. Any
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Visibility
  1. Public
  2. All

Instance Constructors

  1. new IdentityTransform(form: CircuitForm)

    form

    the input and output CircuitForm

Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##(): Int
    Definition Classes
    AnyRef → Any
  3. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  4. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  5. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native()
  6. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  7. def equals(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  8. final def execute(state: CircuitState): CircuitState

    Perform the transform, encode renaming with RenameMap, and can delete annotations Called by runTransform.

    Perform the transform, encode renaming with RenameMap, and can delete annotations Called by runTransform.

    state

    Input Firrtl AST

    returns

    A transformed Firrtl AST

    Definition Classes
    IdentityTransformTransform
  9. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  10. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  11. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  12. final def inputForm: CircuitForm

    The firrtl.CircuitForm that this transform requires to operate on

    The firrtl.CircuitForm that this transform requires to operate on

    Definition Classes
    IdentityTransformTransform
  13. def invalidates(a: Transform): Boolean

    A function that, given *another* transform (parameter a) will return true if this transform invalidates/undos the effects of the *other* transform (parameter a).

    A function that, given *another* transform (parameter a) will return true if this transform invalidates/undos the effects of the *other* transform (parameter a).

    a

    transform

    Definition Classes
    TransformDependencyAPI
  14. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  15. val logger: Logger
    Attributes
    protected
    Definition Classes
    LazyLogging
  16. def name: String

    A convenience function useful for debugging and error messages

    A convenience function useful for debugging and error messages

    Definition Classes
    TransformTransformLike
  17. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  18. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  19. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  20. def optionalPrerequisiteOf: Seq[Dependency[Transform]]

    A sequence of transforms to add this transform as an optionalPrerequisite.

    A sequence of transforms to add this transform as an optionalPrerequisite. The use of optionalPrerequisiteOf enables the transform declaring them to always run before some other transforms. However, declaring optionalPrerequisiteOf will not result in the sequence of transforms executing.

    This is useful for providing an ordering constraint to guarantee that other transforms (e.g., emitters) will not be scheduled before you.

    Definition Classes
    TransformDependencyAPI
    Note

    This method **will not** result in the listed transforms running. If you want to add multiple transforms at once, you should use a DependencyManager with multiple targets.

  21. def optionalPrerequisites: Seq[Dependency[Transform]]

    All transforms that, if a prerequisite of *another* transform, will run before this transform.

    All transforms that, if a prerequisite of *another* transform, will run before this transform.

    Definition Classes
    TransformDependencyAPI
    Note

    The use of a Seq here is to preserve input order. Internally, this will be converted to a private, ordered Set.

  22. final def outputForm: CircuitForm

    The firrtl.CircuitForm that this transform outputs

    The firrtl.CircuitForm that this transform outputs

    Definition Classes
    IdentityTransformTransform
  23. def prerequisites: Seq[Dependency[Transform]]

    All transform that must run before this transform

    All transform that must run before this transform

    Definition Classes
    TransformDependencyAPI
    Note

    The use of a Seq here is to preserve input order. Internally, this will be converted to a private, ordered Set.

  24. final def runTransform(state: CircuitState): CircuitState

    Perform the transform and update annotations.

    Perform the transform and update annotations.

    state

    Input Firrtl AST

    returns

    A transformed Firrtl AST

    Definition Classes
    Transform
  25. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  26. def toString(): String
    Definition Classes
    AnyRef → Any
  27. def transform(state: CircuitState): CircuitState

    A mathematical transform on some type

    A mathematical transform on some type

    returns

    an output object of the same type

    Definition Classes
    TransformTransformLike
  28. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  29. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  30. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native()

Deprecated Value Members

  1. def dependents: Seq[Dependency[Transform]]

    All transforms that must run after this transform

    All transforms that must run after this transform

    This is a means of prerequisite injection into some other transform. Normally a transform will define its own prerequisites. Dependents exist for two main situations:

    First, they improve the composition of optional transforms. If some first transform is optional (e.g., an expensive validation check), you would like to be able to conditionally cause it to run. If it is listed as a prerequisite on some other, second transform then it must always run before that second transform. There's no way to turn it off. However, by listing the second transform as a dependent of the first transform, the first transform will only run (and be treated as a prerequisite of the second transform) if included in a list of target transforms that should be run.

    Second, an external library would like to inject some first transform before a second transform inside FIRRTL. In this situation, the second transform cannot have any knowledge of external libraries. The use of a dependent here allows for prerequisite injection into FIRRTL proper.

    Definition Classes
    DependencyAPI
    Annotations
    @deprecated
    Deprecated

    (Since version FIRRTL 1.3) Due to confusion, 'dependents' is being renamed to 'optionalPrerequisiteOf'. Override the latter instead.

    Note

    The use of a Seq here is to preserve input order. Internally, this will be converted to a private, ordered Set.

    See also

    firrtl.passes.CheckTypes for an example of an optional checking firrtl.Transform

Inherited from Transform

Inherited from DependencyAPI[Transform]

Inherited from TransformLike[CircuitState]

Inherited from LazyLogging

Inherited from AnyRef

Inherited from Any

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