TransformerIdentity
Value members
Inherited methods
Wraps this handler as a "top level" handler, which will inject a SpacTraceElement
(representing the current input or the "EOF" signal)
to any exception is thrown by this handler when calling its step
or finish
methods.
Wraps this handler as a "top level" handler, which will inject a SpacTraceElement
(representing the current input or the "EOF" signal)
to any exception is thrown by this handler when calling its step
or finish
methods.
Used internally by Transformers transform
and toPipe
methods.
- Inherited from:
- Handler
In response to an error thrown and caught from a downstream consumer, this handler may modify the exception on its way back upstream. Used by the "spac frame" transformer.
In response to an error thrown and caught from a downstream consumer, this handler may modify the exception on its way back upstream. Used by the "spac frame" transformer.
- Value parameters:
- err
An error thrown by some downstream handler
- Returns:
Nothing, because this method must always throw something
- Inherited from:
- Handler
Returns this transformer, but with a different view of the Out
type.
The Out <:< Out2
implicit evidence is used to make sure the asInstanceOf
cast is safe.
This is mostly useful when you know you have a transformer that yields a tuple or some kind of type constructor.
Returns this transformer, but with a different view of the Out
type.
The Out <:< Out2
implicit evidence is used to make sure the asInstanceOf
cast is safe.
This is mostly useful when you know you have a transformer that yields a tuple or some kind of type constructor.
- Inherited from:
- Transformer
Creates a new transformer which filters and maps the outputs from this transformer
Creates a new transformer which filters and maps the outputs from this transformer
- Type parameters:
- Out2
Result type of the
pf
- Value parameters:
- pf
Partial function responsible for the filtering and mapping of outputs from this transformer
- Returns:
The filteried and mapped transformer
- Inherited from:
- Transformer
Convenience for this into Parser.drain
Convenience for this into Parser.drain
- Inherited from:
- Transformer
Creates a new transformer which filters the outputs from this transformer.
Creates a new transformer which filters the outputs from this transformer.
- Value parameters:
- predicate
A function which decides whether an output from this transformer should be emitted from the returned transformer.
true
means emit,false
means skip.
- Returns:
The filtered transformer
- Inherited from:
- Transformer
Attach this transformer to a parser
, creating a new parser that encapsulates the pair.
Values emitted from this transformer will be passed as inputs to the parser
,
and the resulting output from the parser
will be yielded as output by the combined parser.
Attach this transformer to a parser
, creating a new parser that encapsulates the pair.
Values emitted from this transformer will be passed as inputs to the parser
,
and the resulting output from the parser
will be yielded as output by the combined parser.
- Inherited from:
- Transformer
Creates a new transformer which applies the transformation function f
to each of this transformer's outputs.
Creates a new transformer which applies the transformation function f
to each of this transformer's outputs.
- Type parameters:
- Out2
The transformation output type
- Value parameters:
- f
A transformation function
- Returns:
The mapped transformer
- Inherited from:
- Transformer
Creates a new transformer which transforms the outputs of this transformer via the given function f
,
emitting each individual value from the output of that function in order before continuing.
Creates a new transformer which transforms the outputs of this transformer via the given function f
,
emitting each individual value from the output of that function in order before continuing.
- Type parameters:
- Out2
The transformed output type
- Value parameters:
- f
A function that transforms outputs from this transformer into a collection of other outputs
- Returns:
A new transformer which emits any number of transformed outputs based on outputs from this transformer
- Inherited from:
- Transformer
Like mergeEither
, but when both sides have a common output type.
This is a less-roundabout way of doing .mergeEither(right).map(_.merge)
.
The same order-of-operations rules apply as with mergeEither
, where this transformer "goes first" for each input.
Like mergeEither
, but when both sides have a common output type.
This is a less-roundabout way of doing .mergeEither(right).map(_.merge)
.
The same order-of-operations rules apply as with mergeEither
, where this transformer "goes first" for each input.
- Type parameters:
- In2
Contravariance-friendly version of
In
- Out2
Common output type between
this
andthat
- Value parameters:
- that
Another transformer
- Returns:
The merged transformer
- Inherited from:
- Transformer
Creates a new transformer which sends inputs to both this transformer and the right
transformer.
Whenever either this
or right
emit a value, that value will be emitted from the returned transformer,
wrapped as a Left
or Right
depending on which underlying transformer emitted it.
For each individual input, the resulting values emitted by this transformer will be emitted before
the resulting values emitted by the right
transformer.
Creates a new transformer which sends inputs to both this transformer and the right
transformer.
Whenever either this
or right
emit a value, that value will be emitted from the returned transformer,
wrapped as a Left
or Right
depending on which underlying transformer emitted it.
For each individual input, the resulting values emitted by this transformer will be emitted before
the resulting values emitted by the right
transformer.
- Type parameters:
- In2
Contravariance-friendly version of
In
- Out2
The output type of the
right
transformer
- Value parameters:
- right
Another transformer
- Returns:
The merged transformer
- Inherited from:
- Transformer
Convenience for this into Parser.fold(init)(f)
Convenience for this into Parser.fold(init)(f)
- Inherited from:
- Transformer
Convenience for this into Parser.firstOpt
Convenience for this into Parser.firstOpt
- Inherited from:
- Transformer
Convenience for this into Parser.tap(f)
Convenience for this into Parser.tap(f)
- Inherited from:
- Transformer
Convenience for this into Parser.toList
Convenience for this into Parser.toList
- Inherited from:
- Transformer
Convenience for calling push
multiple times, aborting early
if the signal becomes Stop
in response to any one push.
Convenience for calling push
multiple times, aborting early
if the signal becomes Stop
in response to any one push.
- Value parameters:
- ins
An iterator which produces input values to push into this handler
- out
The downstream receiver of output values
- Returns:
A "signal" indicating whether this handler wants to continue receiving inputs afterward
- Inherited from:
- Handler
Creates a new transformer which folds outputs from this transformer into a "state" which is emitted each time.
Creates a new transformer which folds outputs from this transformer into a "state" which is emitted each time.
- Type parameters:
- Out2
The type of the scan "state"
- Value parameters:
- init
The initial "state"
- op
State update function; this is called for each
Out
emitted by this transformer, and the result is emitted by the combined transformer in addition to becoming the next "state"
- Returns:
The new transformer
- Inherited from:
- Transformer
Applies this transformer's logic to a Source, returning a new Source which yields values emitted by this transformer when run on the underlying iterator.
Applies this transformer's logic to a Source, returning a new Source which yields values emitted by this transformer when run on the underlying iterator.
- Value parameters:
- pos
Captures the call site for the top level SpacTraceElement
- source
A Source
- Returns:
A wrapped version of
source
, transformed via this transformer- Inherited from:
- Transformer
Applies this transformer's logic to an iterator, returning a new Iterator which yields values
emitted by this transformer when run on the underlying itr
.
Applies this transformer's logic to an iterator, returning a new Iterator which yields values
emitted by this transformer when run on the underlying itr
.
- Value parameters:
- itr
An iterator
- Returns:
A wrapped version of
itr
, transformed via this transformer- Inherited from:
- Transformer
Returns this transformer, but with less restricted In
/ Out
types.
Returns this transformer, but with less restricted In
/ Out
types.
- Type parameters:
- In2
A subtype of
In
- Out2
A supertype of
Out
- Returns:
This transformer (not a copy, it's actually literally
this
)- Inherited from:
- Transformer
Alias for filter
, used under the hood by for-comprehensions
Alias for filter
, used under the hood by for-comprehensions
- Value parameters:
- predicate
The filtering function
- Returns:
The filtered transformer
- Inherited from:
- Transformer
Creates a copy of this transformer, but with a different toString
Creates a copy of this transformer, but with a different toString
- Value parameters:
- name
The new "name" (i.e.
toString
for this transformer
- Returns:
A copy of this transformer whose
toString
returns the givenname
- Inherited from:
- Transformer
Deprecated and Inherited methods
- Deprecated
- Inherited from:
- Transformer
- Deprecated
- Inherited from:
- Transformer
- Deprecated
- Inherited from:
- Transformer
- Deprecated
- Inherited from:
- Transformer
- Deprecated
- Inherited from:
- Transformer
- Deprecated
- Inherited from:
- Transformer
- Deprecated
- Inherited from:
- Transformer