class

Arborist::ExprCall

Inherits Reference / Object

The various ExprCall classes represent invocations, or calls, of the various expression types, at different positions in an input string. The invocations/calls form a call stack, because a PEG parser is by nature a recursive descent parser, and each rule application and the evaluations of the different expressions that make up those rules form a call stack.

Constructors

new(expr : Arborist::Apply | Arborist::Choice | Arborist::Dot | Arborist::MutexAlt | Arborist::NegLookAhead | Arborist::Optional | Arborist::PosLookAhead | Arborist::Repetition | Arborist::RepetitionOnePlus | Arborist::Sequence | Arborist::Terminal, pos : Int32)
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Instance methods

expr
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expr=(expr : Expr)
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inspect(io)
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pos=(pos : Int32)
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