class Shuwar::Parser

Public Class Methods

new(tok) click to toggle source
# File lib/shuwar/parser.rb, line 5
def initialize(tok)
  @enum = tok.enum_for :each_token
end

Public Instance Methods

each_object(&block) click to toggle source
# File lib/shuwar/parser.rb, line 44
def each_object(&block)
  if block
    each_object! &block
  else
    enum_for :each_object!
  end
end
each_object!() { |get_object| ... } click to toggle source
# File lib/shuwar/parser.rb, line 38
def each_object!
  until input_end?
    yield get_object
  end
end
get_object() click to toggle source
# File lib/shuwar/parser.rb, line 9
def get_object
  case @enum.peek
    when Tokenizer::OpenParen
      @enum.next # Eat OpenParen
      tmp = []
      until @enum.peek.is_a? Tokenizer::CloseParen
        tmp.push get_object
      end
      @enum.next # Eat CloseParen
      tmp
    when Tokenizer::Quote
      @enum.next # Eat Quote
      [:quote, get_object]
    when Tokenizer::CloseParen
      raise "Got some close paren here. Why?"
    else
      @enum.next
  end
end
input_end?() click to toggle source
# File lib/shuwar/parser.rb, line 29
def input_end?
  begin
    @enum.peek
    false
  rescue StopIteration
    true
  end
end