public static void removeSpaces(ShortTermMemoryReader reader) throws IOException {
char c = (char) reader.read();
while (Character.isSpaceChar(c)) {
c = (char) reader.read();
}
back(c, reader);
}
public static void readDigitStar(ShortTermMemoryReader reader, StringBuilder sb)
throws IOException {
char c = (char) reader.read();
while (Character.isDigit(c)) {
sb.append(c);
c = (char) reader.read();
}
back(c, reader);
}
public Integer read(ShortTermMemoryReader reader) throws RowColumnReaderException {
try {
removeSpaces(reader);
char c = (char) reader.read();
if (Character.isDigit(c) || c == '-' || c == '+') {
StringBuilder sb = new StringBuilder();
sb.append(c);
readDigitStar(reader, sb);
return Integer.parseInt(sb.toString());
}
throw new Exception("Unexpected symbol " + c);
} catch (Exception e) {
throw reader.getException("Integer Parser Error " + e.getMessage());
}
}
public static void back(char c, ShortTermMemoryReader reader) {
if (c != (char) -1) {
reader.back();
}
}
