private bool ParseDollar(TemplateStream stream, TokenList tokens, ContextStack context, ScopeStack scope)
{
if (stream.Current != '$' || scope.Current == Scope.Block) return false;
var next = stream.Peek();
if (next == '$')
{
stream.Advance(2);
return true;
}
if (char.IsLetter(next))
{
scope.Push(Scope.Statement);
stream.Advance();
return true;
}
if (next == '{')
{
scope.Push(Scope.Block);
stream.Advance();
return true;
}
return false;
}
private bool ParseDollar(TemplateStream stream, TokenList tokens, ContextStack context, ScopeStack scope)
{
if (stream.Current != '$' || scope.Current == Scope.Block)
{
return(false);
}
var next = stream.Peek();
if (next == '$')
{
stream.Advance(2);
return(true);
}
if (char.IsLetter(next))
{
scope.Push(Scope.Statement);
stream.Advance();
return(true);
}
if (next == '{')
{
scope.Push(Scope.Block);
stream.Advance();
return(true);
}
return(false);
}
private bool ParseComment(TemplateStream stream, TokenList tokens, ContextStack context)
{
if (stream.Current != '/' || stream.Peek() != '/') return false;
var start = stream.Position;
var line = stream.Line;
while (stream.Advance())
{
if (stream.Peek() == '\r')
{
stream.Advance();
break;
}
}
tokens.Add(new Token(start, stream.Position - start, line, TokenType.Comment, context.Current));
return true;
}
private bool ParseStatement(TemplateStream stream, TokenList tokens, ContextStack context, ScopeStack scope)
{
if (scope.Current == Scope.Statement)
{
scope.Pop();
}
else if (scope.Current == Scope.Block)
{
var previous = stream.Peek(-1);
if (previous == '$' || char.IsLetterOrDigit(previous))
{
return(false);
}
}
else
{
return(false);
}
var name = stream.PeekWord();
var identifier = context.Current.GetIdentifier(name);
if (identifier != null)
{
tokens.Add(new Token(stream.Position, name.Length, stream.Line, TokenType.Identifier, context.Current, identifier.QuickInfo));
stream.Advance(name.Length);
if (identifier.Type == IdentifierType.Indexed)
{
if (stream.Current == '(')
{
scope.Push(Scope.Filter);
}
if (stream.Current == '[')
{
scope.Push(Scope.Template);
context.Push(name, stream.Position);
}
}
else if (identifier.Type == IdentifierType.Boolean)
{
if (stream.Current == '[')
{
scope.Push(Scope.True);
}
}
return(true);
}
return(false);
}
private bool ParseComment(TemplateStream stream, TokenList tokens, ContextStack context)
{
if (stream.Current != '/' || stream.Peek() != '/')
{
return(false);
}
var start = stream.Position;
var line = stream.Line;
while (stream.Advance())
{
if (stream.Peek() == '\r')
{
stream.Advance();
break;
}
}
tokens.Add(new Token(start, stream.Position - start, line, TokenType.Comment, context.Current));
return(true);
}
private bool ParseStatement(TemplateStream stream, TokenList tokens, ContextStack context, ScopeStack scope)
{
if (scope.Current == Scope.Statement)
{
scope.Pop();
}
else if (scope.Current == Scope.Block)
{
var previous = stream.Peek(-1);
if (previous == '$' || char.IsLetterOrDigit(previous)) return false;
}
else
{
return false;
}
var name = stream.PeekWord();
var identifier = context.Current.GetIdentifier(name);
if (identifier != null)
{
tokens.Add(new Token(stream.Position, name.Length, stream.Line, TokenType.Identifier, context.Current, identifier.QuickInfo));
stream.Advance(name.Length);
if (identifier.Type == IdentifierType.Indexed)
{
if (stream.Current == '(') scope.Push(Scope.Filter);
if (stream.Current == '[')
{
scope.Push(Scope.Template);
context.Push(name, stream.Position);
}
}
else if (identifier.Type == IdentifierType.Boolean)
{
if (stream.Current == '[') scope.Push(Scope.True);
}
return true;
}
return false;
}