XmlParserState SwitchToDirective(IXmlParserContext context, ref string rollback)
{
string key = context.KeywordBuilder.ToString();
string name = key.Trim();
var dir = new RazorDirective(context.LocationMinus(key.Length + 2))
{
Name = name,
IsSimpleDirective = RazorSymbols.IsSimpleDirective(name)
};
context.Nodes.Push(dir);
rollback = String.Empty;
return(EnsureSetAndAdopted <RazorDirectiveState> (ref directiveState));
}
public override XmlParserState ParseClosingBracket <T> (char c, IXmlParserContext context, XmlParserState stateToReturn)
{
if (base.ParseClosingBracket <T> (c, context, stateToReturn) != null)
{
if (RazorSymbols.CanBeContinued(CorrespondingBlock.Name))
{
keys = RazorSymbols.PossibleKeywordsAfter(CorrespondingBlock.Name);
context.StateTag = POSSIBLE_CONTINUATION;
}
else
{
return(stateToReturn);
}
}
return(null);
}
public override XmlParserState PushChar(char c, IXmlParserContext context, ref string rollback)
{
string key;
switch (context.StateTag)
{
case UNKNOWN:
context.KeywordBuilder.Append(c);
key = context.KeywordBuilder.ToString();
if (!RazorSymbols.CanBeStatementOrDirective(key))
{
context.Nodes.Push(new RazorImplicitExpression(context.LocationMinus(key.Length + 1)));
rollback = String.Empty;
return(EnsureSetAndAdopted <RazorExpressionState> (ref expressionState));
}
if (key == "using")
{
context.StateTag = USING;
}
else if (RazorSymbols.IsDirective(key))
{
context.StateTag = POSSIBLE_DIRECTIVE;
}
else if (RazorSymbols.IsStatement(key))
{
context.StateTag = POSSIBLE_STATEMENT;
}
break;
// Using can be either statement: @using (resource) {}, or directive: @using System.IO
case USING:
if (c == '(' || c == '\n')
{
return(SwitchToStatement(context, ref rollback));
}
else if (Char.IsLetterOrDigit(c))
{
return(SwitchToDirective(context, ref rollback));
}
context.KeywordBuilder.Append(c);
break;
case POSSIBLE_STATEMENT:
if (Char.IsWhiteSpace(c) || c == '{' || c == '(')
{
return(SwitchToStatement(context, ref rollback));
}
context.KeywordBuilder.Append(c);
context.StateTag = UNKNOWN;
break;
case POSSIBLE_DIRECTIVE:
if (Char.IsWhiteSpace(c) || c == '{')
{
return(SwitchToDirective(context, ref rollback));
}
context.KeywordBuilder.Append(c);
context.StateTag = UNKNOWN;
break;
}
return(null);
}