protected Queue <LexerNode> DelimitedBy(Queue <LexerNode> lexer, DelimeterParams _params)
{
//var next = lexer.Dequeue();
//if (next.Token != LexerTokens.Punctuation && next.Value != _params.start) {//incorect declaration
// throw new SyntaxException(next);
//}
var next = lexer.Dequeue();
var blocks = new Queue <LexerNode>();
while (!_params.IsStop(next))
{
switch (next.Token)
{
case LexerTokens.Punctuation:
if (_params.IsSeparator(next))
{
continue;
}
if (_params.IsStop(next))
{
break;
}
break;
case LexerTokens.Comment:
OnIgnored(next);
continue;
}
blocks.Enqueue(next);
if (!lexer.Any())
{
break;
}
next = lexer.Dequeue();
}
return(blocks);
}
protected Boundary DelimitedBy(Queue <LexerNode> lexer,
DelimeterParams _params,
ListNode node,
Func <Queue <LexerNode>, AbstractNode> parser)
{
var boundary = new Boundary();
boundary.StartPointer = lexer.Peek();
if (_params.IsStart != null && !_params.IsStart(lexer.Dequeue())) //incorect declaration
{
throw new SyntaxException(lexer.Peek());
}
var blocks = new Queue <LexerNode>();
LexerNode next = null;
var bracket = 1;
do
{
lexer.ThrowIfEmpty(next ?? boundary.StartPointer);
next = lexer.Dequeue();
if (next.Token == LexerTokens.Comment)
{
//OnIgnored(next);
node.Add(new CommentsNode()
{
Lex = next
});
continue;
}
if (_params.IsStart != null && _params.IsStart(next))
{
bracket++;
}
if ((_params.IsSeparator(next) && bracket == 1) || !lexer.Any())
{
if (blocks.Any())
{
node.Add(parser(blocks));
blocks.ThrowIfAny();
}
continue;
}
if (_params.IsStop(next))
{
bracket--;
if (bracket == 0)
{
if (blocks.Any())
{
node.Add(parser(blocks));
blocks.ThrowIfAny();
}
}
}
blocks.Enqueue(next);
} while (bracket != 0 && lexer.Any());
boundary.EndPointer = next;
return(boundary);
}
