Module: ParserMethods

Included in:
LazyPP::Parser
Defined in:
lib/readable-cpp/common.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(cls) ⇒ Object 



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# File 'lib/readable-cpp/common.rb', line 19

def self.included(cls)
  raise <<-end unless cls < Parslet::Parser
Hi there, you included ParserMethods in a class that doth not
derive from Parslet::Parser. Be thou tripping?
  end
  cls.class_eval do
    rule(:l_paren) { str(?() }
    rule(:r_paren) { str(?)) }
    rule(:comma) { str(?,) }
    rule(:colon) { str(?:) }
    rule(:semicolon) { str(?;) }
    rule(:l_bracket) { str(?{) }
    rule(:r_bracket) { str(?}) }
    ## swap these in when im willing to change all references in parser.rb
    # rule(:l_bracket) { str(?[) }
    # rule(:r_bracket) { str(?]) }
    # rule(:l_brace)   { str(?{) }
    # rule(:r_brace)   { str(?}) }
  end
end

Instance Method Details

#`(str) ⇒ Object 



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# File 'lib/readable-cpp/common.rb', line 3

def `(str) 
  str.split(//).
  map{|c|
    match[c =~ /[A-Za-z]/ ? c.upcase<<c.downcase : c]
  }.
  reduce(:>>)
end

#comma_list(rule, min = 0) ⇒ Object 



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# File 'lib/readable-cpp/common.rb', line 16

def comma_list(rule, min = 0) 
  join(rule, space? >> comma >> space?, min)
end

#join(rule, on, min = 0, max = nil) ⇒ Object 



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# File 'lib/readable-cpp/common.rb', line 10

def join(rule, on, min = 0, max = nil) 
  rule >> (on >> rule).repeat(min, max) 
end

#parens(rule) ⇒ Object 



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# File 'lib/readable-cpp/common.rb', line 13

def parens(rule) 
  l_paren >> space? >> rule >> space? >> r_paren 
end