public static Integer keystrokeInput() throws InterruptedException, IOException {
Console console = System.console();
Reader reader = console.reader();
try {
Runtime.getRuntime().exec(cmd).waitFor();
Integer keystroke = Integer.valueOf(reader.read());
Runtime.getRuntime().exec(undo_cmd).waitFor();
return keystroke;
} catch (java.io.IOException e) {
Runtime.getRuntime().exec(undo_cmd).waitFor();
return null;
}
}
public static Integer keystrokeInput(ArrayList<Integer> allowedKeystrokes)
throws InterruptedException, IOException {
Console console = System.console();
Reader reader = console.reader();
try {
try {
Runtime.getRuntime().exec(cmd).waitFor();
if (Thread.interrupted()) {
throw new java.io.InterruptedIOException();
}
} catch (InterruptedException u) {
}
Integer keystroke = Integer.valueOf(reader.read());
if (allowedKeystrokes.contains(keystroke) == false) {
throw new java.io.IOException();
}
Runtime.getRuntime().exec(undo_cmd).waitFor();
return keystroke;
} catch (java.io.IOException e) {
try {
Runtime.getRuntime().exec(undo_cmd).waitFor();
if (Thread.interrupted()) {
throw new java.lang.InterruptedException();
}
} catch (InterruptedException o) {
o.printStackTrace();
}
return null;
}
}
@Override
public Reader reader() throws ConsoleException {
return console.reader();
}
public void interpreteAndRun(String lines, InterpreterLanguage lingo) {
language = lingo;
Console console = System.console();
if (compile(lines)) {
// Run the code.
int PROGRAM_COUNTER = 0;
int TAPE_PTR = 0;
while (PROGRAM_COUNTER >= 0 && PROGRAM_COUNTER < program.size()) {
switch (program.get(PROGRAM_COUNTER)) {
case MOVE_MEM_PTR_TO_NEXT_CELL:
TAPE_PTR++;
break;
case MOVE_MEM_PTR_TO_PREV_CELL:
TAPE_PTR--;
break;
case CELL_VALUE_INCREMENT:
tape[TAPE_PTR]++;
break;
case CELL_VALUE_DECREMENT:
tape[TAPE_PTR]--;
break;
case CELL_VALUE_OUTPUT_CHAR_ASCII:
byte b = tape[TAPE_PTR];
char c = (char) b;
System.out.print(c);
System.out.flush();
break;
case CELL_VALUE_READ_BYTE:
try {
int read = console.reader().read();
tape[TAPE_PTR] = (byte) read;
} catch (Exception e) {
}
break;
case WHILE_CELL_VALUE_NON_ZERO_START:
if (tape[TAPE_PTR] == 0) {
while (PROGRAM_COUNTER < program.size()) {
Command com = program.get(PROGRAM_COUNTER);
if (Command.WHILE_END == com) {
break;
}
PROGRAM_COUNTER++;
}
}
break;
case WHILE_END:
if (tape[TAPE_PTR] != 0) {
while (PROGRAM_COUNTER >= 0) {
Command com = program.get(PROGRAM_COUNTER);
if (Command.WHILE_CELL_VALUE_NON_ZERO_START == com) {
PROGRAM_COUNTER--;
break;
}
PROGRAM_COUNTER--;
}
}
break;
}
PROGRAM_COUNTER++;
}
}
}