Class: Libis::Metadata::Parser::BasicParser

Inherits:
Parslet::Parser
  • Object
show all
Defined in:
lib/libis/metadata/parser/basic_parser.rb

Overview

New style parsers and converters for metadata. New, not finished and untested.

Instance Method Summary collapse

Instance Method Details

#any_quoted(key = :text) ⇒ Object 



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# File 'lib/libis/metadata/parser/basic_parser.rb', line 100

def any_quoted(key = :text)
  scope {
    quote.capture(:quote) >>
        dynamic {|_, c| (str(c.captures[:quote]).absent? >> any).repeat(1)}.maybe.as(key) >>
        dynamic {|_, c| str(c.captures[:quote])}
  }
end

#complement(char) ⇒ Object 



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# File 'lib/libis/metadata/parser/basic_parser.rb', line 71

def complement(char)
  case char
  when '('
    ')'
  when '{'
    '}'
  when '['
    ']'
  else
    char
  end
end

#grouped(foo, left_paren = lparen) ⇒ Object 



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# File 'lib/libis/metadata/parser/basic_parser.rb', line 84

def grouped(foo, left_paren = lparen)
  scope {
    left_paren.capture(:paren).as(:lparen) >>
        foo >>
        dynamic {|_, c| str(complement(c.captures[:paren]))}.as(:rparen)
  }
end

#grouped_anonymous(foo, left_paren = lparen) ⇒ Object 



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# File 'lib/libis/metadata/parser/basic_parser.rb', line 92

def grouped_anonymous(foo, left_paren = lparen)
  scope {
    left_paren.capture(:paren) >>
        foo >>
        dynamic {|_, c| str(complement(c.captures[:paren]))}
  }
end

#transformer ⇒ Object 



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# File 'lib/libis/metadata/parser/basic_parser.rb', line 108

def transformer
  self.class::Transformer.new rescue nil
end