public void ParseList(Token token, ICodeNode parent, TokenType terminator, ErrorCode error)
{
var terminator_set = new HashSet<TokenType>(STMT_START_SET);
terminator_set.Add(terminator);
while(!token.IsEof && token.TokenType != terminator)
{
// parse a statement. The parent node adopts the statement node.
ICodeNode statement_node = Parse(token);
parent.Add(statement_node);
token = InternalScanner.CurrentToken;
// look for the semicolon between the statements.
if (token.TokenType == TokenType.SEMICOLON)
{
token = InternalScanner.GetNextToken();
}
else if (STMT_START_SET.Contains(token.TokenType))
{
ErrorHandler.Flag(token, ErrorCode.MISSING_SEMICOLON, this);
}
// Synchronize at the start of the next statement
// or at the terminator.
token = Parser.Synchronize(terminator_set, InternalScanner, this);
}
// look for the terminator token
if (token.TokenType == terminator)
{
token = InternalScanner.GetNextToken();
} else
{
ErrorHandler.Flag(token, error, this);
}
}
private void ParseConstantList(Token token, ICodeNode constants_node, HashSet<object> constant_set)
{
// loop to parse each constant.
while (CONSTANT_START_SET.Contains(token.TokenType))
{
// the constants list node adopts the constant node.
constants_node.Add(ParseConstant(token, constant_set));
// synchronize at the comma between constants.
token = Parser.Synchronize(COMMA_SET, InternalScanner, this);
// look for the COMMA
if (token.TokenType == TokenType.COMMA)
{
token = InternalScanner.GetNextToken(); // consume the ,
} else if (CONSTANT_START_SET.Contains(token.TokenType))
{
ErrorHandler.Flag(token, ErrorCode.MISSING_COMMA, this);
}
}
}
