private IntegerLiteral doRead(Source source, int index) {
IntegerLiteral integerLiteral = null;
main:
switch (source.getCurrentCharacter()) {
case '0':
switch (source.getCharacterAt(1)) {
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
integerLiteral = decimalIntegerLiteralOrOctalIntegerLiteralReader.read(source, index);
break main;
case '8':
case '9':
integerLiteral = decimalIntegerLiteralReader.read(source, index);
break main;
case 'X':
case 'x':
integerLiteral = hexIntegerLiteralReader.read(source, index);
break main;
case 'B':
case 'b':
integerLiteral = binaryIntegerLiteralReader.read(source, index);
break main;
case '_':
integerLiteral = octalIntegerLiteralReader.read(source, index);
break main;
default:
integerLiteral = decimalIntegerLiteralReader.read(source, index);
break main;
}
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
integerLiteral = decimalIntegerLiteralReader.read(source, index);
break main;
default:
source.rewind(index);
break main;
}
return integerLiteral;
}
@Override
public IntegerLiteral read(Source source) {
return doRead(source, source.getIndex());
}
