Constructor Detail

• ElementFrequenciesVisitor

  public ElementFrequenciesVisitor(TreeNodeStream input)

Method Detail

• getErrorManager

  public ErrorManager getErrorManager()

  During code gen, we can assume tree is in good shape

• combineMax

  protected static FrequencySet<String> combineMax(FrequencySet<String> a,
                                                   FrequencySet<String> b)

  Generate a frequency set as the union of two input sets. If an element is contained in both sets, the value for the output will be the maximum of the two input values.

  Parameters:

  a - The first set.

  b - The second set.

  Returns:

  The union of the two sets, with the maximum value chosen whenever both sets contain the same key.

• combineAndClip

  protected static FrequencySet<String> combineAndClip(FrequencySet<String> a,
                                                       FrequencySet<String> b,
                                                       int clip)

  Generate a frequency set as the union of two input sets, with the values clipped to a specified maximum value. If an element is contained in both sets, the value for the output, prior to clipping, will be the sum of the two input values.

  Parameters:

  a - The first set.

  b - The second set.

  clip - The maximum value to allow for any output.

  Returns:

  The sum of the two sets, with the individual elements clipped to the maximum value gived by clip.

• tokenRef

  public void tokenRef(TerminalAST ref)

• ruleRef

  public void ruleRef(GrammarAST ref,
                      ActionAST arg)

• enterAlternative

  protected void enterAlternative(AltAST tree)

• exitAlternative

  protected void exitAlternative(AltAST tree)

• enterElement

  protected void enterElement(GrammarAST tree)

• exitElement

  protected void exitElement(GrammarAST tree)

• exitSubrule

  protected void exitSubrule(GrammarAST tree)

• enterLexerAlternative

  protected void enterLexerAlternative(GrammarAST tree)

• exitLexerAlternative

  protected void exitLexerAlternative(GrammarAST tree)

• enterLexerElement

  protected void enterLexerElement(GrammarAST tree)

• exitLexerElement

  protected void exitLexerElement(GrammarAST tree)

• exitLexerSubrule

  protected void exitLexerSubrule(GrammarAST tree)