Packages

  • package root
    Definition Classes
    root
  • package io
    Definition Classes
    root
  • package dylemma
    Definition Classes
    io
  • package spac

    SPaC (short for "Streaming Parser Combinators") is a library for building stream consumers in a declarative style, specialized for tree-like data types like XML and JSON.

    SPaC (short for "Streaming Parser Combinators") is a library for building stream consumers in a declarative style, specialized for tree-like data types like XML and JSON.

    Many utilities for handling XML and JSON data involve parsing the entire "document" to some DOM model, then inspecting and transforming that model to extract information. The downside to these utilities is that when the document is very large, the DOM may not fit in memory. The workaround for this type of problem is to treat the document as a stream of "events", e.g. "StartElement" and "EndElement" for XML, or "StartObject" and "EndObject" for JSON. The downside to this workaround is that writing code to handle these streams can be complicated and error-prone, especially when the DOM is complicated.

    SPaC's goal is to drastically simplify the process of creating code to handle these streams.

    This package contains the "core" SPaC traits; Parser, Transformer, Splitter, and ContextMatcher.

    See the xml and json subpackages (provided by the xml-spac and json-spac libraries respectively) for specific utilities related to handling XML and JSON event streams.

    Definition Classes
    dylemma
  • package xml

    This package provides extensions to the core "spac" library which allow for the handling of XML data.

    This package provides extensions to the core "spac" library which allow for the handling of XML data.

    Rather than creating explicit classes that extend Parser, Transformer, and Splitter, this package provides type aliases and implicit extensions. For example, XmlParser[A] is just a type alias for Parser[XmlEvent, A], and XmlParser is just a call to Parser[XmlEvent].

    Three main Parser methods are added to Parser[XmlEvent] via the XmlParserApplyOps implicit class:

    • XmlParser.forText - for capturing raw text
    • XmlParser.attr - for capturing mandatory attributes from elements
    • XmlParser.attrOpt - for capturing optional attributes from elements

    One main Splitter constructor method is added to Splitter via the XmlSplitterApplyOps implicit class:

    • Splitter.xml - for creating splitters based on an inspection of an "element stack"

    Three main Splitter member methods are added to Splitter[XmlEvent, C] via the XmlSplitterOps implicit class:

    • .attr - alias for .joinBy(XmlParser.attr(...))
    • .attrOpt - alias for .joinBy(XmlParser.attrOpt(...))
    • .text - alias for .joinBy(XmlParser.forText)

    A DSL for creating xml-specific ContextMatchers is provided to make it more convenient to call Splitter.xml. For example:

    Splitter.xml("things" \ "thing").attr("foo").parseToList

    Can be used to capture a list of the "foo" attributes in the <thing> elements in

    <things>
   <thing foo="hello" />
   <thing foo="Goodbye">
      <extra>junk</extra>
   </thing>
</thing>
    Definition Classes
    spac
  • AsQName
  • Fs2DataQName
  • Fs2DataSource
  • JavaxQName
  • JavaxSource
  • XmlEvent
  • XmlParserApplyOps
  • XmlSpacException
  • XmlSplitterApplyOps
  • XmlSplitterOps

trait XmlSpacException[Self <: XmlSpacException[Self]] extends SpacException[Self]

SpacException subtype for XML-specific exceptions

Source
XmlSpacException.scala
Linear Supertypes
SpacException[Self], NoStackTrace, Exception, Throwable, Serializable, AnyRef, Any
Ordering
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  2. By Inheritance
Inherited
  1. XmlSpacException
  2. SpacException
  3. NoStackTrace
  4. Exception
  5. Throwable
  6. Serializable
  7. AnyRef
  8. Any
Implicitly
  1. by any2stringadd
  2. by StringFormat
  3. by Ensuring
  4. by ArrowAssoc
  5. by elem
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Visibility
  1. Public
  2. Protected

Abstract Value Members

  1. abstract def withSpacTrace(spacTrace2: Chain[SpacTraceElement]): Self

    Used internally by the framework, typically in a Transformer.Handler's unwind method

    Used internally by the framework, typically in a Transformer.Handler's unwind method

    Definition Classes
    SpacException

Concrete Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##: Int
    Definition Classes
    AnyRef → Any
  3. def &[A1 >: A, B, R](that: SingleItemContextMatcher[ElemStart, B])(implicit reduce: Aux[A1, B, R]): SingleItemContextMatcher[ElemStart, R]

    Operator version of and

    Operator version of and

    Implicit
    This member is added by an implicit conversion from XmlSpacException[Self] toElemContextMatcher[Unit] performed by method elem in io.dylemma.spac.xml.This conversion will take place only if an implicit value of type AsQName[XmlSpacException[Self]] is in scope.
    Definition Classes
    SingleItemContextMatcher
  4. def +(other: String): String
    Implicit
    This member is added by an implicit conversion from XmlSpacException[Self] toany2stringadd[XmlSpacException[Self]] performed by method any2stringadd in scala.Predef.
    Definition Classes
    any2stringadd
  5. def ->[B](y: B): (XmlSpacException[Self], B)
    Implicit
    This member is added by an implicit conversion from XmlSpacException[Self] toArrowAssoc[XmlSpacException[Self]] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @inline()
  6. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  7. def \[A1 >: A, B, R](next: ContextMatcher[ElemStart, B])(implicit reduce: Aux[A1, B, R]): ContextMatcher[ElemStart, R]

    Create a new matcher by forming a chain with this matcher at the front, and the next matcher at the back.

    Create a new matcher by forming a chain with this matcher at the front, and the next matcher at the back. In other words, a matcher for a context within another context.

    A1

    To satisfy covariance on A

    B

    The next matcher's context type

    R

    The "reduced" content type, derived from the tuple type (A, B) based on the reduce rule.

    next

    A matcher which will be used to match the "inner" context

    reduce

    The TypeReduce rule to help omit Unit from the resulting context type

    returns

    A matcher which delegates to this matcher first, then the next matcher for the remaining stack.

    Implicit
    This member is added by an implicit conversion from XmlSpacException[Self] toElemContextMatcher[Unit] performed by method elem in io.dylemma.spac.xml.This conversion will take place only if an implicit value of type AsQName[XmlSpacException[Self]] is in scope.
    Definition Classes
    ContextMatcher
  8. def addEarlyTrace(firstTraceElems: SpacTraceElement*): Self

    Used internally by the framework, typically in a Transformer.Handler's unwind method

    Used internally by the framework, typically in a Transformer.Handler's unwind method

    Definition Classes
    SpacException
  9. def addEarlyTrace(firstTrace: Chain[SpacTraceElement]): Self

    Used internally by the framework, typically in a Transformer.Handler's unwind method

    Used internally by the framework, typically in a Transformer.Handler's unwind method

    Definition Classes
    SpacException
  10. final def addSuppressed(arg0: Throwable): Unit
    Definition Classes
    Throwable
  11. def addTrace(nextTraceElems: SpacTraceElement*): Self

    Used internally by the framework, typically in a Transformer.Handler's unwind method

    Used internally by the framework, typically in a Transformer.Handler's unwind method

    Definition Classes
    SpacException
  12. def addTrace(nextTrace: Chain[SpacTraceElement]): Self

    Used internally by the framework, typically in a Transformer.Handler's unwind method

    Used internally by the framework, typically in a Transformer.Handler's unwind method

    Definition Classes
    SpacException
  13. def and[A1 >: A, B, R](that: SingleItemContextMatcher[ElemStart, B])(implicit reduce: Aux[A1, B, R]): SingleItemContextMatcher[ElemStart, R]

    Creates a new single-element matcher which combines the results of both this matcher and that matcher.

    Creates a new single-element matcher which combines the results of both this matcher and that matcher. Both this and that will operate on the first element of the stack (as opposed to Chained matchers).

    A1

    To satisfy covariance on A

    B

    The other matcher's result type

    R

    The combined result type

    that

    The matcher to combine

    reduce

    The TypeReduce rule for combining the two match results

    returns

    A new matcher which combines the results of this and that

    Implicit
    This member is added by an implicit conversion from XmlSpacException[Self] toElemContextMatcher[Unit] performed by method elem in io.dylemma.spac.xml.This conversion will take place only if an implicit value of type AsQName[XmlSpacException[Self]] is in scope.
    Definition Classes
    SingleItemContextMatcher
  14. def apply(stack: IndexedSeq[ElemStart], offset: Int, avail: Int): Option[Unit]

    The main context match method.

    The main context match method.

    Inspects the elements in the XML "tag stack", which is essentially a List[StartElement], but for performance reasons is represented as an array with an "offset" index and a number of available elements from that offset. If the elements correspond to a context value of A, the implementation must then pass the remaining elements of the stack to the next matcher, i.e. by calling next(stack, offset + numConsumed, avail - numConsumed).

    The difference between this method and applyChained is the lack of the next parameter; in this method, the current matcher is assumed to be the end of the chain.

    stack

    A reference to the complete XML "tag stack". Note that the responsibility of this method is limited to a *slice* of this value, as defined by offset and avail.

    offset

    The index of the first element to be considered by the matching logic. From this method's point of view, the "first" element in the stack is actually at stack(offset)

    avail

    The number of elements available in the stack starting from the offset.

    returns

    An option containing the successfully-matched context, or None.

    Implicit
    This member is added by an implicit conversion from XmlSpacException[Self] toElemContextMatcher[Unit] performed by method elem in io.dylemma.spac.xml.This conversion will take place only if an implicit value of type AsQName[XmlSpacException[Self]] is in scope.
    Definition Classes
    ContextMatcher
  15. def applyChained[B](stack: IndexedSeq[ElemStart], offset: Int, avail: Int, next: ContextMatcher[ElemStart, B]): Option[(Unit, B)]

    The underlying context match method.

    The underlying context match method.

    Inspects the elements in the XML "tag stack", which is essentially a List[StartElement], but for performance reasons is represented as an array with an "offset" index and a number of available elements from that offset. If the elements correspond to a context value of A, the implementation must then pass the remaining elements of the stack to the next matcher, i.e. by calling next(stack, offset + numConsumed, avail - numConsumed).

    The next matcher is necessary in order to support non-greedy matchers, e.g. ContextMatcher.variableLength, a.k.a. **. Without a reference to the next matcher in the chain, matcher implementations would be forced to pick a fixed number of elements for matching, never knowing that the overall match could have succeeded if they had consumed some additional elements.

    B

    The next matcher's context type

    stack

    A reference to the complete XML "tag stack". Note that the responsibility of this method is limited to a *slice* of this value, as defined by offset and avail.

    offset

    The index of the first element to be considered by the matching logic. From this method's point of view, the "first" element in the stack is actually at stack(offset)

    avail

    The number of elements available in the stack starting from the offset.

    next

    The next matcher in the chain.

    returns

    If the match succeeded, and the next match succeded, an Option containing a tuple of both match results. If the match failed, or if the next match failed, None.

    Implicit
    This member is added by an implicit conversion from XmlSpacException[Self] toElemContextMatcher[Unit] performed by method elem in io.dylemma.spac.xml.This conversion will take place only if an implicit value of type AsQName[XmlSpacException[Self]] is in scope.
    Definition Classes
    SingleItemContextMatcher → ContextMatcher
  16. def applyElem(elem: ElemStart): Option[Unit]

    The matching operation for single-element matchers.

    The matching operation for single-element matchers.

    elem

    The first element in the XML tag stack

    returns

    Some(context) for a successful match, None otherwise

    Implicit
    This member is added by an implicit conversion from XmlSpacException[Self] toElemContextMatcher[Unit] performed by method elem in io.dylemma.spac.xml.This conversion will take place only if an implicit value of type AsQName[XmlSpacException[Self]] is in scope.
    Definition Classes
    SingleItemContextMatcher
  17. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  18. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.CloneNotSupportedException]) @native()
  19. val detail: Either[String, Throwable]
    Definition Classes
    SpacException
  20. def ensuring(cond: (XmlSpacException[Self]) => Boolean, msg: => Any): XmlSpacException[Self]
    Implicit
    This member is added by an implicit conversion from XmlSpacException[Self] toEnsuring[XmlSpacException[Self]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  21. def ensuring(cond: (XmlSpacException[Self]) => Boolean): XmlSpacException[Self]
    Implicit
    This member is added by an implicit conversion from XmlSpacException[Self] toEnsuring[XmlSpacException[Self]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  22. def ensuring(cond: Boolean, msg: => Any): XmlSpacException[Self]
    Implicit
    This member is added by an implicit conversion from XmlSpacException[Self] toEnsuring[XmlSpacException[Self]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  23. def ensuring(cond: Boolean): XmlSpacException[Self]
    Implicit
    This member is added by an implicit conversion from XmlSpacException[Self] toEnsuring[XmlSpacException[Self]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  24. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  25. def equals(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef → Any
  26. def fillInStackTrace(): SpacException[Self]
    Definition Classes
    SpacException → NoStackTrace → Throwable
  27. def filter(p: (Unit) => Boolean): SingleItemContextMatcher[ElemStart, Unit]

    Create a new ContextMatcher which takes the match result of this matcher and passes it through the validation function f.

    Create a new ContextMatcher which takes the match result of this matcher and passes it through the validation function f. If f returns false, the match is unsuccessful.

    p

    The filter predicate, i.e. the validation function

    returns

    A new matcher with validated results

    Implicit
    This member is added by an implicit conversion from XmlSpacException[Self] toElemContextMatcher[Unit] performed by method elem in io.dylemma.spac.xml.This conversion will take place only if an implicit value of type AsQName[XmlSpacException[Self]] is in scope.
    Definition Classes
    SingleItemContextMatcher → ContextMatcher
  28. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.Throwable])
  29. def flatMap[B](f: (Unit) => Option[B]): SingleItemContextMatcher[ElemStart, B]

    Create a new ContextMatcher which takes the match result of this matcher and passes it through the combined transformation/validation function f.

    Create a new ContextMatcher which takes the match result of this matcher and passes it through the combined transformation/validation function f. If f returns None, the match is unsuccessful; if f returns a Some, the value inside is the result of the match.

    B

    The transformed context type

    f

    The transformation/validation function

    returns

    A new matcher with transformed and validated results

    Implicit
    This member is added by an implicit conversion from XmlSpacException[Self] toElemContextMatcher[Unit] performed by method elem in io.dylemma.spac.xml.This conversion will take place only if an implicit value of type AsQName[XmlSpacException[Self]] is in scope.
    Definition Classes
    SingleItemContextMatcher → ContextMatcher
  30. def getCause(): Throwable
    Definition Classes
    Throwable
  31. final def getClass(): Class[_ <: AnyRef]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  32. def getLocalizedMessage(): String
    Definition Classes
    Throwable
  33. def getMessage(): String
    Definition Classes
    Throwable
  34. def getStackTrace(): Array[StackTraceElement]
    Definition Classes
    Throwable
  35. final def getSuppressed(): Array[Throwable]
    Definition Classes
    Throwable
  36. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  37. def initCause(arg0: Throwable): Throwable
    Definition Classes
    Throwable
  38. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  39. def map[B](f: (Unit) => B): SingleItemContextMatcher[ElemStart, B]

    Create a new ContextMatcher which takes the match result of this matcher and passes it through the transformation function f.

    Create a new ContextMatcher which takes the match result of this matcher and passes it through the transformation function f.

    B

    The transformed context type

    f

    The transformation function

    returns

    A new matcher with transformed results

    Implicit
    This member is added by an implicit conversion from XmlSpacException[Self] toElemContextMatcher[Unit] performed by method elem in io.dylemma.spac.xml.This conversion will take place only if an implicit value of type AsQName[XmlSpacException[Self]] is in scope.
    Definition Classes
    SingleItemContextMatcher → ContextMatcher
  40. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  41. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  42. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  43. def or[A2 >: A](that: SingleItemContextMatcher[ElemStart, A2]): SingleItemContextMatcher[ElemStart, A2]

    Specialization of the default or method, specifically for SingleElementContextMatchers

    Specialization of the default or method, specifically for SingleElementContextMatchers

    Implicit
    This member is added by an implicit conversion from XmlSpacException[Self] toElemContextMatcher[Unit] performed by method elem in io.dylemma.spac.xml.This conversion will take place only if an implicit value of type AsQName[XmlSpacException[Self]] is in scope.
    Definition Classes
    SingleItemContextMatcher
  44. def or[A2 >: A](that: ContextMatcher[ElemStart, A2]): ContextMatcher[ElemStart, A2]

    Create a new ContextMatcher which will fall back to a second matcher in the event that this matcher fails to match a context.

    Create a new ContextMatcher which will fall back to a second matcher in the event that this matcher fails to match a context.

    A2

    The resulting context type (common supertype between this matcher and that)

    that

    The matcher which will be used as the fallback

    returns

    A matcher that falls back to another matcher in case of failure

    Implicit
    This member is added by an implicit conversion from XmlSpacException[Self] toElemContextMatcher[Unit] performed by method elem in io.dylemma.spac.xml.This conversion will take place only if an implicit value of type AsQName[XmlSpacException[Self]] is in scope.
    Definition Classes
    ContextMatcher
  45. def printStackTrace(arg0: PrintWriter): Unit
    Definition Classes
    Throwable
  46. def printStackTrace(arg0: PrintStream): Unit
    Definition Classes
    Throwable
  47. def printStackTrace(): Unit
    Definition Classes
    Throwable
  48. def setStackTrace(arg0: Array[StackTraceElement]): Unit
    Definition Classes
    Throwable
  49. val spacTrace: Chain[SpacTraceElement]
    Definition Classes
    SpacException
  50. final def synchronized[T0](arg0: => T0): T0
    Definition Classes
    AnyRef
  51. def toString(): String
    Definition Classes
    Throwable → AnyRef → Any
  52. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  53. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  54. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException]) @native()
  55. def |[A2 >: A](that: SingleItemContextMatcher[ElemStart, A2]): SingleItemContextMatcher[ElemStart, A2]

    Operator version of or, specialized for SingleElementContextMatchers

    Operator version of or, specialized for SingleElementContextMatchers

    Implicit
    This member is added by an implicit conversion from XmlSpacException[Self] toElemContextMatcher[Unit] performed by method elem in io.dylemma.spac.xml.This conversion will take place only if an implicit value of type AsQName[XmlSpacException[Self]] is in scope.
    Definition Classes
    SingleItemContextMatcher
  56. def |[A2 >: A](that: ContextMatcher[ElemStart, A2]): ContextMatcher[ElemStart, A2]

    Operator version of or

    Operator version of or

    Implicit
    This member is added by an implicit conversion from XmlSpacException[Self] toElemContextMatcher[Unit] performed by method elem in io.dylemma.spac.xml.This conversion will take place only if an implicit value of type AsQName[XmlSpacException[Self]] is in scope.
    Definition Classes
    ContextMatcher

Deprecated Value Members

  1. def formatted(fmtstr: String): String
    Implicit
    This member is added by an implicit conversion from XmlSpacException[Self] toStringFormat[XmlSpacException[Self]] performed by method StringFormat in scala.Predef.
    Definition Classes
    StringFormat
    Annotations
    @deprecated @inline()
    Deprecated

    (Since version 2.12.16) Use formatString.format(value) instead of value.formatted(formatString), or use the f"" string interpolator. In Java 15 and later, formatted resolves to the new method in String which has reversed parameters.

  2. def →[B](y: B): (XmlSpacException[Self], B)
    Implicit
    This member is added by an implicit conversion from XmlSpacException[Self] toArrowAssoc[XmlSpacException[Self]] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use -> instead. If you still wish to display it as one character, consider using a font with programming ligatures such as Fira Code.

Inherited from SpacException[Self]

Inherited from NoStackTrace

Inherited from Exception

Inherited from Throwable

Inherited from Serializable

Inherited from AnyRef

Inherited from Any

Inherited by implicit conversion any2stringadd fromXmlSpacException[Self] to any2stringadd[XmlSpacException[Self]]

Inherited by implicit conversion StringFormat fromXmlSpacException[Self] to StringFormat[XmlSpacException[Self]]

Inherited by implicit conversion Ensuring fromXmlSpacException[Self] to Ensuring[XmlSpacException[Self]]

Inherited by implicit conversion ArrowAssoc fromXmlSpacException[Self] to ArrowAssoc[XmlSpacException[Self]]

Inherited by implicit conversion elem fromXmlSpacException[Self] to ElemContextMatcher[Unit]

Ungrouped