CompletedRightHandSide

public protocol CompletedRightHandSide : GrammarComponent

Information about the right-hand side of a rule that has successfully completed parsing. This information is used when constructing the result of a successful parse.

Seealso

ConstructResult

  • The index of the rule in Grammar.rules.

    Declaration

    Swift

    var ruleIndex: RuleIndex { get }

  • The number of symbols on the right-hand side of the rule.

    Declaration

    Swift

    var count: Int { get }

  • Returns information about the parse of the k-th symbol on the right-hand side of the rule.

    Declaration

    Swift

    func rhs(_ k: Int) -> (inputParam: Param, outputParam: Param, result: Result, startPosition: Int, endPosition: Int)

    Parameters

    k

    For a rule of the form L => R1 ... Rn, the information returned is about Rk.

    Return Value

    Information about the parse of the k-th symbol Rk on the right hand side of the rule.

    • inputParam: The input parameter of Rk.
    • outputParam: The output parameter of Rk
    • result: The result of parsing Rk.
    • startPosition: The (inclusive) position of the input where the successful parse started.
    • endPosition: The (exclusive) position of the input where the successful parse ended.