Field Detail

• PRECEDENCE_OPTION_NAME

  public static final String PRECEDENCE_OPTION_NAME

  See Also:

  Constant Field Values

• TOKENINDEX_OPTION_NAME

  public static final String TOKENINDEX_OPTION_NAME

  See Also:

  Constant Field Values

• ast

  public GrammarRootAST ast

• rules

  public Collection<Rule> rules

• g

  public Grammar g

• tool

  public Tool tool

Constructor Detail

• LeftRecursiveRuleTransformer

  public LeftRecursiveRuleTransformer(GrammarRootAST ast,
                                      Collection<Rule> rules,
                                      Grammar g)

Method Detail

• translateLeftRecursiveRules

  public void translateLeftRecursiveRules()

• translateLeftRecursiveRule

  public boolean translateLeftRecursiveRule(GrammarRootAST ast,
                                            LeftRecursiveRule r,
                                            String language)

  Return true if successful

• parseArtificialRule

  public RuleAST parseArtificialRule(Grammar g,
                                     String ruleText)

• setAltASTPointers

  public void setAltASTPointers(LeftRecursiveRule r,
                                RuleAST t)

   (RULE e int _p (returns int v)
          (BLOCK
            (ALT
                  (BLOCK
                          (ALT INT {$v = $INT.int;})
                          (ALT '(' (= x e) ')' {$v = $x.v;})
                          (ALT ID))
                  (* (BLOCK
                          (OPTIONS ...)
                          (ALT {7 >= $_p}? '*' (= b e) {$v = $a.v * $b.v;})
                          (ALT {6 >= $_p}? '+' (= b e) {$v = $a.v + $b.v;})
                          (ALT {3 >= $_p}? '++') (ALT {2 >= $_p}? '--'))))))