| public GetFirstDescendantWithType ( Antlr types ) : Antlr.Runtime.Tree.CommonTree | ||
| types | Antlr | |
| Результат | Antlr.Runtime.Tree.CommonTree | |
public LabelElementPair(Grammar g, GrammarAST label, GrammarAST element, int labelOp)
{
this.label = label;
this.element = element;
// compute general case for label type
if (element.GetFirstDescendantWithType(tokenTypeForTokens) != null)
{
if (labelOp == ANTLRParser.ASSIGN)
type = LabelType.TOKEN_LABEL;
else
type = LabelType.TOKEN_LIST_LABEL;
}
else if (element.GetFirstDescendantWithType(ANTLRParser.RULE_REF) != null)
{
if (labelOp == ANTLRParser.ASSIGN)
type = LabelType.RULE_LABEL;
else
type = LabelType.RULE_LIST_LABEL;
}
// now reset if lexer and string
if (g.IsLexer())
{
if (element.GetFirstDescendantWithType(ANTLRParser.STRING_LITERAL) != null)
{
if (labelOp == ANTLRParser.ASSIGN)
type = LabelType.LEXER_STRING_LABEL;
}
}
}
// TODO: don't include this node!!
public virtual CommonTree GetFirstDescendantWithType(Antlr.Runtime.BitSet types)
{
if (types.Member(Type))
{
return(this);
}
if (Children == null)
{
return(null);
}
foreach (object c in Children)
{
GrammarAST t = (GrammarAST)c;
if (types.Member(t.Type))
{
return(t);
}
CommonTree d = t.GetFirstDescendantWithType(types);
if (d != null)
{
return(d);
}
}
return(null);
}
// TODO: move to basetree when i settle on how runtime works
// TODO: don't include this node!!
// TODO: reuse other method
public virtual CommonTree GetFirstDescendantWithType(int type)
{
if (Type == type)
{
return(this);
}
if (Children == null)
{
return(null);
}
foreach (object c in Children)
{
GrammarAST t = (GrammarAST)c;
if (t.Type == type)
{
return(t);
}
CommonTree d = t.GetFirstDescendantWithType(type);
if (d != null)
{
return(d);
}
}
return(null);
}
