public static bool TryParseNode(IParser parser, out ToolbarNode node)
{
bool result = false;
node = null;
if (parser.PeekToken(TokenKind.ToolbarKeyword))
{
result = true;
node = new ToolbarNode();
parser.NextToken();
node.StartIndex = parser.Token.Span.Start;
NameExpression nameExpr;
if (NameExpression.TryParseNode(parser, out nameExpr))
{
node.Identifier = nameExpr;
if (parser.PeekToken(TokenKind.LeftParenthesis))
{
parser.NextToken();
ToolbarAttribute attrib;
while (ToolbarAttribute.TryParseNode(parser, out attrib, ToolbarComponent.Toolbar))
{
node.Attributes.Add(attrib);
if (!parser.PeekToken(TokenKind.Comma))
{
break;
}
parser.NextToken();
}
if (parser.PeekToken(TokenKind.RightParenthesis))
{
parser.NextToken();
}
else
{
parser.ReportSyntaxError("Expecting right-paren in toolbar attributes section.");
}
}
bool continueToolbar = true;
ToolbarItem item;
ToolbarSeparator sep;
while (continueToolbar)
{
if (ToolbarItem.TryParseNode(parser, out item))
{
node.Children.Add(item.StartIndex, item);
continue;
}
else if (ToolbarSeparator.TryParseNode(parser, out sep))
{
node.Children.Add(sep.StartIndex, sep);
continue;
}
else
{
continueToolbar = false;
}
}
if (parser.PeekToken(TokenKind.EndKeyword))
{
parser.NextToken();
node.EndIndex = parser.Token.Span.End;
}
else
{
parser.ReportSyntaxError("Expected \"end\" token.");
}
}
else
{
parser.ReportSyntaxError("Invalid toolbar identifier found.");
}
}
return(result);
}
public static bool TryParseNode(IParser parser, out ToolbarItem node)
{
bool result = false;
node = null;
if (parser.PeekToken(TokenKind.ItemKeyword))
{
parser.NextToken();
result = true;
node = new ToolbarItem();
node.StartIndex = parser.Token.Span.Start;
NameExpression nameExpr;
if (NameExpression.TryParseNode(parser, out nameExpr))
{
node.Identifier = nameExpr;
if (parser.PeekToken(TokenKind.LeftParenthesis))
{
parser.NextToken();
ToolbarAttribute attrib;
while (ToolbarAttribute.TryParseNode(parser, out attrib, ToolbarComponent.Item))
{
node.Attributes.Add(attrib);
if (!parser.PeekToken(TokenKind.Comma))
{
break;
}
parser.NextToken();
}
if (parser.PeekToken(TokenKind.RightParenthesis))
{
parser.NextToken();
}
else
{
parser.ReportSyntaxError("Expecting right-paren in toolbar item attributes section.");
}
}
if (parser.PeekToken(TokenKind.EndKeyword))
{
parser.NextToken();
node.EndIndex = parser.Token.Span.End;
}
else
{
parser.ReportSyntaxError("Expected \"end\" token.");
}
}
else
{
parser.ReportSyntaxError("Invalid toolbar item identifier found.");
}
}
return(result);
}