public TokenCollection Lex(LexReader src)
{
_stack = new Stack<TokenId>();
_tokens = new TokenCollection();
_src = src;
_curChar = src.Read();
Lex();
return _tokens;
}
public TokenCollection Lex(LexReader src)
{
_stack = new Stack <TokenId>();
_tokens = new TokenCollection();
_src = src;
_curChar = src.Read();
Lex();
return(_tokens);
}
private void Lex()
{
_html.Length = 0;
Location startLocation = new Location(_src.LineIndex, _src.CharacterIndex - 1);
while (!_src.EndOfStream)
{
switch (_curChar)
{
case '$':
{
_curChar = _src.Read();
if (_html.Length > 0)
{
Location endLocation = new Location(_src.LineIndex, _src.CharacterIndex - 2);
_tokens.Add(new Token(TokenId.Html, _html.ToString(), startLocation, endLocation));
_html.Length = 0;
}
if (_curChar == '{')
{
TokenId tokenId = TokenId.Block;
_stack.Push(tokenId);
_tokens.Add(new Token(tokenId, _src.LineIndex, _src.CharacterIndex - 2, 2));
_curChar = _src.Read();
LexCode(true, '\0');
startLocation = new Location(_src.LineIndex, _src.CharacterIndex - 1);
}
else if (WillBeKeyOrIdent(_curChar))
{
_tokens.Add(new Token(TokenId.Dollar, _src.LineIndex, _src.CharacterIndex - 2, 1));
Token last = LexKeyOrIdent();
_tokens.Add(last);
if (last.TokenId == TokenId.Ident || last.TokenId == TokenId.Echo)
{
LexInvoke();
}
else
{
LexCode(false, '\0');
}
startLocation = new Location(_src.LineIndex, _src.CharacterIndex - 1);
}
else
{
_html.Append('$');
}
break;
}
case '}':
{
if (_stack.Count > 0 && _stack.Peek() == TokenId.LCurly)
{
if (_html.Length > 0)
{
Location endLocation = new Location(_src.LineIndex, _src.CharacterIndex - 1);
string data = _html.ToString();
_tokens.Add(new Token(TokenId.Html, data, startLocation, endLocation));
_html.Length = 0;
}
LexCode(false, '\0');
_html.Length = 0;
startLocation = new Location(_src.LineIndex, _src.CharacterIndex - 1);
}
else
{
_html.Append(_curChar);
_curChar = _src.Read();
}
break;
}
case '\\':
{
_curChar = _src.Read();
if (_curChar == '$' || _curChar == '}')
{
_html.Append(_curChar);
}
else
{
_html.Append('\\');
_html.Append(_curChar);
}
_curChar = _src.Read();
break;
}
default:
{
_html.Append(_curChar);
_curChar = _src.Read();
break;
}
}
}
if (_html.Length > 0)
{
Location endLocation = new Location(_src.LineIndex, _src.CharacterIndex - 1);
_tokens.Add(new Token(TokenId.Html, _html.ToString(), startLocation, endLocation));
_html.Length = 0;
}
}