public void ParsePage(string name, TextReader reader)
{
Console.WriteLine ("parsing page: {0}", name);
Tokenizer tk = new Tokenizer (environment, reader);
codegen.BeginPage (name);
Token tok = null;
StringBuilder data = new StringBuilder ();
while (true) {
tok = tk.GetNextToken ();
switch (tok.Type) {
case TokenType.TOKEN_VARIABLE_BEGIN:
FlushData (data);
ParseVariable (tk);
break;
case TokenType.TOKEN_COMMENT_BEGIN:
FlushData (data);
ParseComment (tk);
break;
case TokenType.TOKEN_BLOCK_BEGIN:
FlushData (data);
ParseControlBlock (tk);
break;
case TokenType.TOKEN_EOF:
FlushData (data);
codegen.EndPage ();
return;
default:
data.Append (tok.Value);
break;
}
}
}
public void ParseComment(Tokenizer tk)
{
Token tok;
StringBuilder builder = new StringBuilder ();
do {
tok = tk.GetNextToken ();
if (tok.Type == TokenType.TOKEN_COMMENT_END) {
return;
}
builder.Append (tok.Value);
} while (tok.Type != TokenType.TOKEN_EOF);
// FAIL
}
public void ParseControlBlock(Tokenizer tk)
{
Token tok;
StringBuilder builder = new StringBuilder ();
ParseStatement (tk);
tok = tk.Current;
do {
if (tok.Type == TokenType.TOKEN_BLOCK_END) {
return;
}
builder.Append (tok.Value);
tok = tk.GetNextToken ();
} while (tok.Type != TokenType.TOKEN_EOF);
}
/*
public TemplateFilter ParseFilter (TemplateTokenizer tk)
{
Token tok = NextNonWhiteSpaceToken (tk);
if (tok.Type != TokenType.TOKEN_NAME)
RaiseFailure (tk, String.Format ("Invalid filter expression, token '{0}' found where a name was expected.", tok.Value));
string name = tok.Value;
List<Expression> args = new List<Expression> ();
tok = NextNonWhiteSpaceToken (tk);
if (tok.Type == TokenType.TOKEN_LPAREN) {
args = ParseArguments (tk);
if (tk.Current.Type != TokenType.TOKEN_RPAREN)
RaiseFailure (tk, String.Format ("Invalid filter expression, token '{0}' where a ) was expected.", tk.Current.Value));
// Advance pass the RPAREN
NextNonWhiteSpaceToken (tk);
}
return new TemplateFilter (name, args);
}
*/
/*
public List<Expression> ParseArguments (TemplateTokenizer tk)
{
List<Expression> expressions = new List<Expression> ();
Token tok = null;
do {
Expression expression = ParseExpression (tk, TokenType.TOKEN_COMMA);
expressions.Add (expression);
tok = tk.Current;
if (tok.Type == TokenType.TOKEN_RPAREN)
break;
if (tok.Type != TokenType.TOKEN_COMMA)
RaiseFailure (tk, String.Format ("Invalid argument list, expected comma got a {0}", tk.Current.Value));
} while (tok.Type != TokenType.TOKEN_EOF);
if (tk.Current.Type == TokenType.TOKEN_EOF)
RaiseFailure (tk, String.Format ("Unexpected end of file."));
return expressions;
}
public List<ArgumentDefinition> ParseArgumentDefinitions (TemplateTokenizer tk)
{
Token tok = NextNonWhiteSpaceToken (tk);
List<ArgumentDefinition> args = new List<ArgumentDefinition> ();
do {
if (tok.Type == TokenType.TOKEN_RPAREN)
break;
if (tok.Type != TokenType.TOKEN_NAME)
RaiseFailure (tk, String.Format ("Invalid argument definition, expected a name got a '{0}'", tok.Value));
string name = tok.Value;
ConstantValue default_value = null;
tok = NextNonWhiteSpaceToken (tk);
if (tok.Type == TokenType.TOKEN_ASSIGN) {
default_value = ParseConstantValue (tk);
tok = NextNonWhiteSpaceToken (tk);
}
args.Add (new ArgumentDefinition (name, default_value));
if (tok.Type == TokenType.TOKEN_RPAREN)
break;
if (tok.Type != TokenType.TOKEN_COMMA)
RaiseFailure (tk, String.Format ("Invalid argument list, expected comma got a {0}", tk.Current.Type));
tok = NextNonWhiteSpaceToken (tk);
} while (tok.Type != TokenType.TOKEN_EOF);
if (tk.Current.Type == TokenType.TOKEN_EOF)
RaiseFailure (tk, String.Format ("Unexpected end of file."));
return args;
}
*/
public Token NextNonWhiteSpaceToken(Tokenizer tk)
{
Token tok;
do {
tok = tk.GetNextToken ();
} while (tok.Type == TokenType.TOKEN_WHITESPACE);
return tok;
}