Class: SportDb::Tokenizer

Inherits:
Object
  • Object
show all
Defined in:
lib/sportdb/parser.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(txt) ⇒ Tokenizer

Returns a new instance of Tokenizer.



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# File 'lib/sportdb/parser.rb', line 58

def initialize( txt )
   parser = Parser.new
 
   tree = []
   
   lines = txt.split( "\n" )
   lines.each_with_index do |line,i|
       next if line.strip.empty? || line.strip.start_with?( '#' )
       ##   support for inline (end-of-line) comments
       line = line.sub(  /#.*/, '' ).strip

       puts "line >#{line}<"
       tokens = parser.tokenize( line )
       pp tokens
   
       tree << tokens
   end
 

=begin   
   ## quick hack
   ##   turn all  text tokens followed by minute token
   ##     into player tokens!!!
   ##
   ##   also auto-convert text tokens into team tokens - why? why not?
   tree.each do |tokens|
      tokens.each_with_index do |t0,idx|
         t1 = tokens[idx+1]
         if t1 && t1[0] == :minute && t0[0] == :text
              t0[0] = :player 
         end
      end
   end
=end

=begin
## auto-add/insert start tokens for known line patterns
##    START_GOALS for  goals_line
##    why? why not?
=end

   ## flatten
   @tokens = []
   tree.each do |tokens|
      @tokens += tokens 
      @tokens  << [:NEWLINE, "\n"]   ## auto-add newlines
   end
 

   ## convert to racc format
   @tokens = @tokens.map do |tok|
        if tok.size == 1
          [tok[0].to_s, tok[0].to_s]
        elsif tok.size == 2
 #############
 ## pass 1
 ##   replace all texts with keyword matches (e.g. group, round, leg, etc.)
            if tok[0] == :TEXT
               text = tok[1]
               tok = if parser.is_group?( text )
                       [:GROUP, text]
                     elsif parser.is_round?( text ) || parser.is_leg?( text )
                       [:ROUND, text]
                     else
                       tok  ## pass through as-is (1:1)
                     end
            end
 ## pass 2
           tok
    else
           raise ArgumentError, "tokens of size 1|2 expected; got #{tok.pretty_inspect}"
        end
   end
end

Instance Attribute Details

#tokens ⇒ Object (readonly)

Returns the value of attribute tokens.



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# File 'lib/sportdb/parser.rb', line 56

def tokens
  @tokens
end

Instance Method Details

#next_token ⇒ Object 



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# File 'lib/sportdb/parser.rb', line 135

def next_token
   @tokens.shift
end