public TreeNode getTree(String filePath)
{
TokenList = SNLScanner.getTokenList(filePath);
if (SNLScanner.error.isError == true)
{
if (SNLScanner.error.Type == ErrorType.errorType.LexicalError)
{
output = SNLScanner.lexString(filePath);
}
return(null);
}
else
{
TreeNode root = new TreeNode();
cur = 0;
root = match(nonTerminals.Program, null);
//Console.WriteLine(TokenList[cur].LexType);
if (TokenList[cur].LexType != LexType.DOT)
{
error.Type = ErrorType.errorType.SyntaxError;
error.Line = TokenList[cur].Line;
error.Row = TokenList[cur].Row;
}
if (error.isError == true)
{
int line;
line = error.Line / 2;
if (error.Line / 2 == 0)
{
line = 1;
}
if (error.Line == 3)
{
line = 2;
}
output = "行: " + line + " 列： " + error.Row + " "+ "语法错误";
return(null);
}
return(root);
}
}