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import javax.imageio.*;
import java.awt.image.*;
import java.awt.event.*;
import java.awt.*;
import java.security.NoSuchAlgorithmException;
import java.security.MessageDigest;
import java.lang.reflect.*;
import java.net.*;
import java.io.*;
import javax.swing.text.*;
import javax.swing.*;
import java.util.concurrent.*;
import java.util.regex.*;
import java.util.List;
import java.util.zip.*;
import java.util.*;
public class main {
static String question = "Is port 80 open?";
static class ThePortOracle {
static String isPort_open(String s) {
int port = parseInt(s);
print("I'll check port " + port + "...");
boolean b = isPortOpen(port);
return b ? "Yes, it is open!" : "No, it is not open.";
}
}
// pattern, class name, method
static String[][] entries = {
{"is port * open", "ThePortOracle", "isPort_open"}
};
static String answerQuestion(String question) {
List tok = parse(question);
for (String[] e : entries) {
String[] m = match2(parse(e[0]), tok);
if (m != null) { try {
Class c = Class.forName("main$" + e[1]);
return "" + call(c, e[2], (Object[]) m);
} catch (Throwable __e) { throw __e instanceof RuntimeException ? (RuntimeException) __e : new RuntimeException(__e); }}
}
return unknown(question);
}
static String unknown(String question) {
return "? Unknown question: " + question;
}
public static void main(String[] args) throws Exception {
if (args.length != 0)
question = join(" ", args);
print("Q: " + question);
String answer = answerQuestion(question);
print("A: " + answer);
}
static List parse(String s) {
return tokensToLowerCase(dropPunctuation(javaTokPlusPeriod(s)));
}
static List dropPunctuation(List tok) {
tok = new ArrayList(tok);
for (int i = 1; i < tok.size(); i += 2) {
String t = tok.get(i);
if (t.length() == 1 && !Character.isLetter(t.charAt(0)) && !Character.isDigit(t.charAt(0)) && !"*".equals(t)) {
tok.set(i-1, tok.get(i-1) + tok.get(i+1));
tok.remove(i);
tok.remove(i);
i -= 2;
}
}
return tok;
}
static List tokensToLowerCase(List tok) {
tok = new ArrayList(tok);
for (int i = 1; i < tok.size(); i += 2)
tok.set(i, tok.get(i).toLowerCase());
return tok;
}
// match2 matches multiple "*" (matches a single token) wildcards and zero or one "..." wildcards (matches multiple tokens)
static String[] match2(List pat, List tok) {
// standard case (no ...)
int i = pat.indexOf("...");
if (i < 0) return match2_match(pat, tok);
pat = new ArrayList(pat); // We're modifying it, so copy first
pat.set(i, "*");
int expand = 0;
while (pat.size() < tok.size()) {
++expand;
pat.add(i, "*");
pat.add(i+1, ""); // doesn't matter
}
return match2_match(pat, tok);
}
static String[] match2_match(List pat, List tok) {
List result = new ArrayList();
if (pat.size() != tok.size()) {
/*if (debug)
print("Size mismatch: " + structure(pat) + " vs " + structure(tok));*/
return null;
}
for (int i = 1; i < pat.size(); i += 2) {
String p = pat.get(i), t = tok.get(i);
/*if (debug)
print("Checking " + p + " against " + t);*/
if ("*".equals(p))
result.add(t);
else if (!p.equals(t))
return null;
}
return result.toArray(new String[result.size()]);
}
static int parseInt(String s) {
return Integer.parseInt(s);
}
static int isPortOpen_timeout = 500;
static boolean isPortOpen(int port) {
try {
Socket socket = new Socket();
socket.connect(new InetSocketAddress("127.0.0.1", port), isPortOpen_timeout);
//print("Connected to " + ip + ":" + port);
socket.close();
return true;
} catch (Exception ex) {
return false;
}
}
// javaTok extended with "..." token.
static List javaTokPlusPeriod(String s) {
List tok = new ArrayList();
int l = s.length();
int i = 0;
while (i < l) {
int j = i;
char c; String cc;
// scan for whitespace
while (j < l) {
c = s.charAt(j);
cc = s.substring(j, Math.min(j+2, l));
if (c == ' ' || c == '\t' || c == '\r' || c == '\n')
++j;
else if (cc.equals("/*")) {
do ++j; while (j < l && !s.substring(j, Math.min(j+2, l)).equals("*/"));
j = Math.min(j+2, l);
} else if (cc.equals("//")) {
do ++j; while (j < l && "\r\n".indexOf(s.charAt(j)) < 0);
} else
break;
}
tok.add(s.substring(i, j));
i = j;
if (i >= l) break;
c = s.charAt(i); // cc is not needed in rest of loop body
cc = s.substring(i, Math.min(i+2, l));
// scan for non-whitespace
if (c == '\'' || c == '"') {
char opener = c;
++j;
while (j < l) {
if (s.charAt(j) == opener) {
++j;
break;
} else if (s.charAt(j) == '\\' && j+1 < l)
j += 2;
else
++j;
}
} else if (Character.isJavaIdentifierStart(c))
do ++j; while (j < l && Character.isJavaIdentifierPart(s.charAt(j)));
else if (Character.isDigit(c))
do ++j; while (j < l && Character.isDigit(s.charAt(j)));
else if (cc.equals("[[")) {
do ++j; while (j+1 < l && !s.substring(j, j+2).equals("]]"));
j = Math.min(j+2, l);
} else if (s.substring(j, Math.min(j+3, l)).equals("..."))
j += 3;
else
++j;
tok.add(s.substring(i, j));
i = j;
}
if ((tok.size() % 2) == 0) tok.add("");
return tok;
}
static void print() {
System.out.println();
}
static void print(Object o) {
System.out.println(o);
}
static void print(long i) {
System.out.println(i);
}
static Object call(Object o, String method, Object... args) {
try {
if (o instanceof Class) {
Method m = call_findStaticMethod((Class) o, method, args, false);
m.setAccessible(true);
return m.invoke(null, args);
} else {
Method m = call_findMethod(o, method, args, false);
m.setAccessible(true);
return m.invoke(o, args);
}
} catch (Exception e) {
throw new RuntimeException(e);
}
}
static Method call_findStaticMethod(Class c, String method, Object[] args, boolean debug) {
Class _c = c;
while (c != null) {
for (Method m : c.getDeclaredMethods()) {
if (debug)
System.out.println("Checking method " + m.getName() + " with " + m.getParameterTypes().length + " parameters");;
if (!m.getName().equals(method)) {
if (debug) System.out.println("Method name mismatch: " + method);
continue;
}
if ((m.getModifiers() & Modifier.STATIC) == 0 || !call_checkArgs(m, args, debug))
continue;
return m;
}
c = c.getSuperclass();
}
throw new RuntimeException("Method '" + method + "' (static) with " + args.length + " parameter(s) not found in " + _c.getName());
}
static Method call_findMethod(Object o, String method, Object[] args, boolean debug) {
Class c = o.getClass();
while (c != null) {
for (Method m : c.getDeclaredMethods()) {
if (debug)
System.out.println("Checking method " + m.getName() + " with " + m.getParameterTypes().length + " parameters");;
if (m.getName().equals(method) && call_checkArgs(m, args, debug))
return m;
}
c = c.getSuperclass();
}
throw new RuntimeException("Method '" + method + "' (non-static) with " + args.length + " parameter(s) not found in " + o.getClass().getName());
}
private static boolean call_checkArgs(Method m, Object[] args, boolean debug) {
Class[] types = m.getParameterTypes();
if (types.length != args.length) {
if (debug)
System.out.println("Bad parameter length: " + args.length + " vs " + types.length);
return false;
}
for (int i = 0; i < types.length; i++)
if (!(args[i] == null || types[i].isInstance(args[i]))) {
if (debug)
System.out.println("Bad parameter " + i + ": " + args[i] + " vs " + types[i]);
return false;
}
return true;
}
public static String join(String glue, Iterable strings) {
StringBuilder buf = new StringBuilder();
Iterator i = strings.iterator();
if (i.hasNext()) {
buf.append(i.next());
while (i.hasNext())
buf.append(glue).append(i.next());
}
return buf.toString();
}
public static String join(String glue, String[] strings) {
return join(glue, Arrays.asList(strings));
}
public static String join(Iterable strings) {
return join("", strings);
}
public static String join(String[] strings) {
return join("", strings);
}
}