final class Lift3[T1, T2, T3, R] extends AnyVal
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- def lift(p1: Parsley[T1], p2: => Parsley[T2], p3: => Parsley[T3]): Parsley[R]
This combinator executes each of its argument parsers in turn and applies this function to their results.
This combinator executes each of its argument parsers in turn and applies this function to their results.
Each of the given parsers is executed in sequence, each yielding a result. So long as every parser succeeded, the whole combinator succeeds and each of the results is fed into this function. The result of this application is returned by the combinator. If any of the given parsers fails then the whole combinator fails.
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a parser that applies this function to the results of all the given parsers.
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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 both 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.