struct CLTK::Lexer::Rule

• CLTK::Lexer::Rule
• Struct
• Value
• Object

Overview

The Rule class is used simply for data encapsulation.

Defined in:

cltk/lexer/rule.cr

Constructors

• .new(pattern : Regex, state : Symbol, flags : Array(Symbol), &action : Proc(Regex::MatchData, String, CLTK::Lexer::Environment, BlockReturn))

Instance Method Summary

• #action : Regex::MatchData, String, CLTK::Lexer::Environment -> {String | Symbol | Nil, Array(String) | Float64 | Int32 | String | Nil}

  @return [Proc] Token producting action to be taken when this rule is matched.

• #flags : Array(Symbol)

  @return [Array] Flags currently set in this lexing environment.

• #pattern : Regex

  @return [Regexp] Regular expression for matching this rule.

Constructor Detail

Instance Method Detail