object extension extends extension
These implicit classes can be used to extend the core combinator set of Parsley.
This may mean that importing them enables combinators that can be used on non-Parsley types,
or might enable some syntactic sugar that is not part of the core combinator "style".
- Source
- extension.scala
- Since
4.5.0
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This is the documentation for Parsley.
Package structure
The parsley package contains the
Parsleyclass, as well as theResult,Success, andFailuretypes. In addition to these, it also contains the following packages and "modules" (a module is defined as being an object which mocks a package):parsley.Parsleycontains the bulk of the core "function-style" combinators.parsley.combinatorcontains many helpful combinators that simplify some common parser patterns.parsley.charactercontains the combinators needed to read characters and strings, as well as combinators to match specific sub-sets of characters.parsley.debugcontains debugging combinators, helpful for identifying faults in parsers.parsley.exprcontains the following sub modules:parsley.expr.chaincontains combinators used in expression parsingparsley.expr.precedenceis a builder for expression parsers built on a precedence table.parsley.expr.infixcontains combinators used in expression parsing, but with more permissive types than their equivalents inchain.parsley.expr.mixedcontains combinators that can be used for expression parsing, but where different fixities may be mixed on the same level: this is rare in practice.parsley.syntaxcontains several implicits to add syntactic sugar to the combinators. These are sub-categorised into the following sub modules:parsley.syntax.charactercontains implicits to allow you to use character and string literals as parsers.parsley.syntax.liftenables postfix application of the lift combinator onto a function (or value).parsley.syntax.zippedenables boths a reversed form of lift where the function appears on the right and is applied on a tuple (useful when type inference has failed) as well as a.zippedmethod for building tuples out of several combinators.parsley.syntax.extensioncontains syntactic sugar combinators exposed as implicit classes.parsley.errorscontains modules to deal with error messages, their refinement and generation.parsley.errors.combinatorprovides combinators that can be used to either produce more detailed errors as well as refine existing errors.parsley.errors.tokenextractorsprovides mixins for common token extraction strategies during error message generation: these can be used to avoid implementingunexpectedTokenin theErrorBuilder.parsley.liftcontains functions which lift functions that work on regular types to those which now combine the results of parsers returning those same types. these are ubiquitous.parsley.apcontains functions which allow for the application of a parser returning a function to several parsers returning each of the argument types.parsley.statecontains combinators that interact with the context-sensitive functionality in the form of state.parsley.tokencontains theLexerclass that provides a host of helpful lexing combinators when provided with the description of a language.parsley.positioncontains parsers for extracting position information.parsley.genericcontains some basic implementations of the Parser Bridge pattern (see Design Patterns for Parser Combinators in Scala, or the parsley wiki): these can be used before more specialised generic bridge traits can be constructed.