public override UstNode Visit(PatternExpressions patternExpressions)
{
// #* #* ... #* -> #*
List <Expression> collection = patternExpressions.Collection
.Select(item => (Expression)Visit(item)).ToList();
int index = 0;
while (index < collection.Count)
{
if (collection[index].NodeType == NodeType.PatternMultipleExpressions &&
index + 1 < collection.Count &&
collection[index + 1].NodeType == NodeType.PatternMultipleExpressions)
{
collection.RemoveAt(index);
}
else
{
index++;
}
}
var result = new PatternExpressions
{
Collection = new List <Expression>(collection)
};
return(result);
}
public UstNode VisitArgs([NotNull] DslParser.ArgsContext context)
{
List <Expression> expressions = context.arg().Select(arg =>
(Expression)VisitArg(arg)).ToList();
var span = context.GetTextSpan();
ArgsNode result;
if (expressions.All(expr => expr.NodeType != NodeType.PatternMultipleExpressions))
{
result = new ArgsNode(expressions, span, null);
}
else
{
result = new PatternExpressions()
{
Collection = expressions,
TextSpan = span
};
}
return(result);
}
public virtual void Exit(PatternExpressions patternExpressions)
{
}
public virtual UstNode Visit(PatternExpressions patternExpressions)
{
return(VisitChildren(patternExpressions));
}
public virtual void Enter(PatternExpressions patternExpressions)
{
}
