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;
}
}
}
}
internal virtual bool HasTypeOrMoreCommand([NotNull] Rule r)
{
GrammarAST ast = r.ast;
if (ast == null)
{
return(false);
}
GrammarAST altActionAst = (GrammarAST)ast.GetFirstDescendantWithType(ANTLRParser.LEXER_ALT_ACTION);
if (altActionAst == null)
{
// the rule isn't followed by any commands
return(false);
}
// first child is the alt itself, subsequent are the actions
for (int i = 1; i < altActionAst.ChildCount; i++)
{
GrammarAST node = (GrammarAST)altActionAst.GetChild(i);
if (node.Type == ANTLRParser.LEXER_ACTION_CALL)
{
if ("type".Equals(node.GetChild(0).Text))
{
return(true);
}
}
else if ("more".Equals(node.Text))
{
return(true);
}
}
return(false);
}