Packages

  • package root
    Definition Classes
    root
  • package parsley
    Definition Classes
    root
  • package errors

    This package contains various functionality relating to the generation and formatting of error messages.

    This package contains various functionality relating to the generation and formatting of error messages.

    In particular, it includes a collection of combinators for improving error messages within the parser, including labelling and providing additional information. It also contains combinators that can be used to valid data produced by a parser, to ensure it conforms to expected invariances, producing good quality error messages if this is not the case. Finally, this package contains ways of changing the formatting of error messages: this can either be changing how the default String-based errors are formatted, or by injectiing Parsley's errors into a custom error object.

    Definition Classes
    parsley
  • package tokenextractors

    This package contains implementations of token extractors that can be mixed into ErrorBuilder to decide how to extract unexpected tokens from the residual input left over from a parse error.

    This package contains implementations of token extractors that can be mixed into ErrorBuilder to decide how to extract unexpected tokens from the residual input left over from a parse error.

    These are common strategies, and something here is likely to be what is needed. They are all careful to handle unprintable characters and whitespace in a sensible way, and account for unicode codepoints that are wider than a single 16-bit character.

    Definition Classes
    errors
    Since

    4.0.0

  • LexToken
  • MatchParserDemand
  • SingleChar
  • TillNextWhitespace

trait SingleChar extends AnyRef

This extractor mixin provides an implementation for ErrorBuilder.unexpectedToken when mixed into an error builder: it will unconditionally report the first character in the remaining input as the problematic token.

Self Type
SingleChar with ErrorBuilder[_]
Source
SingleChar.scala
Since

4.0.0

Note

In the case of unprintable characters or whitespace, this extractor will favour reporting a more meaningful name.

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  16. def toString(): String
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  17. final def unexpectedToken(cs: Iterable[Char], amountOfInputParserWanted: Int, lexicalError: Boolean): Token

    See also

    ErrorBuilder.unexpectedToken

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