Class: Rattler::Parsers::ZeroOrMore

Inherits:
Parser show all
Includes:
Combining
Defined in:
lib/rattler/parsers/zero_or_more.rb

Overview

ZeroOrMore decorates a parser to match repeatedly and always succeed.

Author:

  • Jason Arhart

Instance Method Summary collapse

Methods included from Combining

#capturing?, #with_ws

Methods inherited from Parser

#&, #capturing?, #labeled?, #one_or_more, #optional, parsed, #skip, #with_ws, #zero_or_more, #|

Methods inherited from Util::Node

#==, [], #[], #attrs, #can_equal?, #child, #children, #each, #empty?, #eql?, #initialize, #inspect, #method_missing, #name, #respond_to?, #same_contents?, #to_graphviz, #with_attrs, #with_attrs!, #with_children

Constructor Details

This class inherits a constructor from Rattler::Util::Node

Dynamic Method Handling

This class handles dynamic methods through the method_missing method in the class Rattler::Util::Node

Instance Method Details

#parse(scanner, rules, scope = {}) ⇒ Array, true

Parse using the decorated parser as many times as it succeeds. Return the results in an array, or true if the decorated parser is not capturing?.

Returns:

  • (Array, true) —

    an array containing the decorated parser’s parse results, or true if the decorated parser is not capturing?



27
28
29
30
31
32
33
 
# File 'lib/rattler/parsers/zero_or_more.rb', line 27

def parse(scanner, rules, scope = {})
  a = []
  while result = child.parse(scanner, rules, scope)
    a << result
  end
  capturing? ? a : true
end

#variable_capture_count? ⇒ Boolean

Returns:

  • (Boolean) 


35
36
37
 
# File 'lib/rattler/parsers/zero_or_more.rb', line 35

def variable_capture_count?
  true
end