class Arborist::ExprCall

• Arborist::ExprCall
• Reference
• Object

Overview

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.

Direct Known Subclasses

• Arborist::ApplyCall
• Arborist::ChoiceCall
• Arborist::MutexAltCall
• Arborist::NegLookAheadCall
• Arborist::OptionalCall
• Arborist::PosLookAheadCall
• Arborist::RepetitionCall
• Arborist::RepetitionOnePlusCall
• Arborist::SequenceCall
• Arborist::TerminalCall

Defined in:

arborist.cr

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)

Instance Method Summary

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

Constructor Detail

Instance Method Detail