Class CodepointsToString

All Implemented Interfaces:
Callable, FunctionItem, GroundedValue, Item, Sequence

public class CodepointsToString extends SystemFunction implements Callable
This class implements the function fn:codepoints-to-string()
  • Constructor Details

    • CodepointsToString

      public CodepointsToString()
  • Method Details

    • unicodeToString

      public static StringValue unicodeToString(SequenceIterator chars, IntPredicateProxy checker) throws XPathException
      Return a StringItem corresponding to a given sequence of Unicode code values
      Parameters:
      chars - iterator delivering the characters as integer values
      checker - used to test whether a character is valid in the appropriate XML version
      Returns:
      the sequence of characters as a StringItem
      Throws:
      XPathException - if any of the integers is not the codepoint of a valid XML character
    • call

      public StringValue call(XPathContext context, Sequence[] arguments) throws XPathException
      Evaluate the expression
      Specified by:
      call in interface Callable
      Parameters:
      context - the dynamic evaluation context
      arguments - the values of the arguments, supplied as Sequences
      Returns:
      the result of the evaluation, in the form of a Sequence
      Throws:
      XPathException - if a dynamic error occurs during the evaluation of the expression
    • getStreamerName

      public String getStreamerName()
      Description copied from class: SystemFunction
      Get a name that identifies the class that can be used to evaluate this function in streaming mode, that is, supplying one item or event at a time as it is delivered by the parser. Special streaming support is generally available in Saxon-EE for all system functions that take a sequence as their argument.
      Overrides:
      getStreamerName in class SystemFunction
      Returns:
      a name that identifies a class that supports streamed evaluation of this system function, or null if no such class is available. The mapping of names to classes is defined in the Saxon-EE class StreamerMap. In non-streaming Saxon editions (HE and PE) the method always returns null.