private void resetComparisonFile() throws HackTranslatorException {
try {
comparisonReader = new BufferedReader(new FileReader(comparisonFileName));
if (getGui() != null) {
TextFileGUI comp = ((HackAssemblerGUI) getGui()).getComparison();
comp.reset();
comp.setContents(comparisonFileName);
comparisonProgram = new short[comp.getNumberOfLines()];
for (int i = 0; i < comp.getNumberOfLines(); i++) {
if (comp.getLineAt(i).length() != Definitions.BITS_PER_WORD) {
throw new HackTranslatorException("Error in file " + comparisonFileName + ": Line " + i + " does not contain exactly " + Definitions.BITS_PER_WORD + " characters");
}
try {
comparisonProgram[i] = (short) Conversions.binaryToInt(comp.getLineAt(i));
} catch (NumberFormatException nfe) {
throw new HackTranslatorException("Error in file " + comparisonFileName + ": Line " + i + " does not contain only 1/0 characters");
}
}
}