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

  • DefaultErrorBuilder
  • ErrorBuilder
  • Token
  • TokenSpan
  • combinator

object TokenSpan

This object contains the sub-types of TokenSpan.

Source
TokenSpan.scala
Since

4.0.0

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  1. final case class Spanning(line: Int, col: Int) extends TokenSpan with Product with Serializable

    This span is designed to be used by token extractors that try and parse the remaining input: it indicates the number of lines and columns that were parsed in the process of extracting the token.

    This span is designed to be used by token extractors that try and parse the remaining input: it indicates the number of lines and columns that were parsed in the process of extracting the token.

    line

    the number of lines the token passes over

    col

    the number of columns consumed on the most recent line

    Since

    4.0.0

    Note

    Parsley starts at position (1, 1): if the final position after token extraction on residual input was (2, 1) then that token would span 1 line and 0 columns.

  2. final case class Width(w: Int) extends TokenSpan with Product with Serializable

    This class describes a simple span of w characters.

    This class describes a simple span of w characters.

    w

    the width of the token in UTF-16 characters.

    Since

    4.0.0

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