class RLTK::Lexer::Rule
The Rule
class is used simply for data encapsulation.
Attributes
action[R]
@return [Proc] Token
producting action to be taken when this rule is matched.
flags[R]
@return [Array<Symbol>] Flags currently set in this lexing environment.
pattern[R]
@return [Regexp] Regular expression for matching this rule.
Public Class Methods
new(pattern, action, state, flags)
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Instantiates a new Rule
object.
@param [Regexp] pattern Regular expression used to match to this rule. @param [Proc] action Token
producing action associated with this rule. @param [Symbol] state State in which this rule is active. @param [Array<Symbol>] flags Flags that must be enabled for this rule to match.
# File lib/rltk/lexer.rb, line 364 def initialize(pattern, action, state, flags) @pattern = pattern @action = action @state = state @flags = flags end