public override Node VisitParenExprs([NotNull] TigerParser.ParenExprsContext context)
{
var node = new ExpressionSeqNode(context);
node.Children.AddRange(from e in context.expr() select Visit(e)); // EXPRESSION+
return(node);
}
public override Node VisitLet([NotNull] TigerParser.LetContext context)
{
var node = new LetNode(context);
TigerParser.DeclsContext[] decls = context.decls();
var declarations = new DeclarationListNode(decls[0]);
declarations.Children.AddRange(from d in decls select Visit(d)); // declaration list -> DECLARATION+
node.Children.Add(declarations); // DECLARATION LIST
TigerParser.ExprContext[] exprs = context.expr();
ExpressionSeqNode expressions;
if (exprs.Length > 0)
{
expressions = new ExpressionSeqNode(exprs[0]);
}
else
{
expressions = new ExpressionSeqNode(-1, -1);
}
expressions.Children.AddRange(from e in exprs select Visit(e)); // expression sequence -> EXPRESSION*
node.Children.Add(expressions); // EXPRESSION SEQUENCE
return(node);
}