Field Detail

• rule

  public Rule rule

• ast

  public AltAST ast

• altNum

  public int altNum

  What alternative number is this outermost alt? 1..n

• tokenRefs

  public <any> tokenRefs

• tokenRefsInActions

  public <any> tokenRefsInActions

• ruleRefs

  public <any> ruleRefs

• ruleRefsInActions

  public <any> ruleRefsInActions

• labelDefs

  public <any> labelDefs

  A list of all LabelElementPair attached to tokens like id=ID, ids+=ID

• actions

  public List<ActionAST> actions

  Track all executable actions other than named actions like @init and catch/finally (not in an alt). Also tracks predicates, rewrite actions. We need to examine these actions before code generation so that we can detect refs to $rule.attr etc... This tracks per alt

Constructor Detail

• Alternative

  public Alternative(Rule r,
                     int altNum)

Method Detail

• resolvesToToken

  public boolean resolvesToToken(String x,
                                 ActionAST node)

• resolvesToAttributeDict

  public boolean resolvesToAttributeDict(String x,
                                         ActionAST node)

• resolveToAttribute

  public Attribute resolveToAttribute(String x,
                                      ActionAST node)

  $x Attribute: rule arguments, return values, predefined rule prop.

• resolveToAttribute

  public Attribute resolveToAttribute(String x,
                                      String y,
                                      ActionAST node)

  $x.y, x can be surrounding rule, token/rule/label ref. y is visible attr in that dictionary. Can't see args on rule refs.

• resolvesToLabel

  public boolean resolvesToLabel(String x,
                                 ActionAST node)

• resolvesToListLabel

  public boolean resolvesToListLabel(String x,
                                     ActionAST node)

• getAnyLabelDef

  public LabelElementPair getAnyLabelDef(String x)

• resolveToRule

  public Rule resolveToRule(String x)

  x can be ruleref or rule label.