Class: STSScanDriver

Inherits:
Object
  • Object
show all
Defined in:
lib/statsailr/scanner/sts_scanner.rb

Instance Method Summary collapse

Constructor Details

#initialize(path) ⇒ STSScanDriver

Returns a new instance of STSScanDriver.



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# File 'lib/statsailr/scanner/sts_scanner.rb', line 314

def initialize( path )
  @source_path = path
end

Instance Method Details

#tokenize ⇒ Object 



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# File 'lib/statsailr/scanner/sts_scanner.rb', line 318

def tokenize
  s = STSScanner.new(@source_path)
  s.start()
  @tokens = []

while ! s.eos? do
case
when s.scan_state_top?
  case
  when s.bol? && s.scan(/[ \t]*D[Aa][Tt][Aa]/)
    @tokens << [:DATA_START, "DATA" ]
    s.skip_spaces()
    if s.scan(/\:/)
      @tokens << [:COLON, s.matched]
      s.skip_spaces
      s.scan_ident()
      @tokens << [:IDENT, s.matched]
      s.skip_spaces()
    end
    s.scan_ident()
    @tokens << [:IDENT, s.matched]
    s.skip_spaces()
    @tokens.concat s.tokenize_options()
    @tokens << [:TERMIN, "\n"]
    s.scan_state_set_data()
    s.prepare_data_script()
  when s.bol? && s.scan(/[ \t]*P[Rr][Oo][Cc]/)
    @tokens << [:PROC_START, "PROC" ]
    s.skip_spaces()
    s.scan_ident()
    @tokens << [:IDENT, s.matched]
    s.skip_spaces()
    @tokens.concat s.tokenize_options()
    @tokens << [:TERMIN, "\n"]
    s.scan_state_set_proc()
    s.prepare_proc_tokens()
  else
    if s.skip_rest_after_comment_sign()
    elsif s.skip_empty_line()
    elsif s.skip_multiple_line_comment()
    elsif s.scan_toplevel_instruction
      @tokens << [:TOP_INST, s.matched() ]
      @tokens.concat s.tokenize_options()
      @tokens << [:TOP_INST_END, "TOP_INST_END"]
      @tokens << [:TERMIN, "\n"]
    else
      print("Unknown part on TOP LEVEL(" + s.get_scan_state.to_s + ")  " )
      p s.check(/...../) # Show five letters
      if s.skip_until(/\n/)
        # Discard the current line
      else
        s.skip_until(/$/) # Last line
      end
    end
  end
when s.scan_state_data?
  if s.scan_end_line?
    @tokens << [:DATA_SCRIPT, s.get_data_script() ]
    @tokens << [:DATA_END, "END"]
    @tokens << [:TERMIN, "D_TERMIN"]
    s.scan_state_set_top()  # Return to TOP_LEVEL
  else
    # Store data lines to one token
    s.scan_whole_line()
    line = s.matched()
    s.append_to_data_script( line )
  end
when s.scan_state_proc?
  if s.scan_end_line?
    @tokens.concat s.get_proc_tokens()
    @tokens << [:PROC_END, "END"]
    @tokens << [:TERMIN, "P_TERMIN"]
    s.scan_state_set_top()  # Return to TOP_LEVEL
  elsif s.skip_rest_after_comment_sign() # Ignore after comment sign.
  elsif s.skip_empty_line()              # Ignore the empty line.
  elsif s.skip_multiple_line_comment()   # Ignore multiple comment.
  else
    s.scan_proc_inst()
    s.append_to_proc_tokens( [].append [:PROC_INST , s.matched ])
    proc_tokens = s.tokenize_proc_line() # Tokenize the current line
    s.append_to_proc_tokens(proc_tokens)
    s.append_to_proc_tokens( [].append [:TERMIN, "TERMIN"] )
  end
else
  raise "Error: StatSailrScanner has an invalid scan state " + s.get_scan_state
end
end

  s.terminate()
  return @tokens
end