IOIOI Processor (v6, with char shift) [690]

!636
!quickmain
!auto-import
!standard functions
!quicknew
!1000346 // use "case" as a variable name
!688 // buf.isEmpty
!class JavaTok

import java.lang.reflect.*;

interface Function {
  public Object process(Object in);
  public void toJava_process(Code code);
}

interface ReversibleFunction extends Function {
  public Object unprocess(Object in);
  public void toJava_unprocess(Code code);
}

// generic learner (works on objects)
interface Learner {
  public void processInOut(Object in, Object out);
  public Object processIn(Object in);
  public void toJava(Code code);
}

abstract class Base {
  void printVars() {
    new StringBuilder buf;
    Field[] fields = getClass().getDeclaredFields();
    for (Field field : fields) {
      if ((field.getModifiers() & Modifier.STATIC) != 0)
        continue;
      Object value;
      try {
        value = field.get(this);
      } catch (Exception e) {
        value = "?";
      }
      
      if (!buf.isEmpty()) buf.append(", ");
      buf.append(field.getName() + "=" + value);
    }
    System.out.println(buf.toString());
  }
}

abstract class LearnerImpl extends Base implements Learner {
}

class Code {
  StringBuilder buf = new StringBuilder();
  String var = "in";
  String indent = "";
  List<String> translators = new ArrayList<String>();
  
  void line(String line) {
    buf.append(indent).append(line).append('\n');
  }
  
  void indent() {
    indent += "  ";
  }
  
  void unindent() {
    indent = indent.substring(0, indent.length()-2);
  }
  
  void translators(String... ids) {
    for (String id : ids)
      if (! translators.contains(id)) // space is needed otherwise translator 636 is fooled :)
        translators.add(id);
  }
  
  String getTranslators() {
    return main.fromLines(translators);
  }
}

main {
  static List<Case> cases = new ArrayList<Case>();
  
  psvm {
    String snippetID = null;
    
    for (int i = 0; i < args.length; i++) {
      String arg = args[i];
      if (arg.equals("debug"))
        debugOn(args[++i]);
      else if (isSnippetID(arg))
        snippetID = arg;
      else
        System.err.println("Unknown argument: " + arg + ", ignoring");
    }
    
    parse(snippetID);
    
    int solved = 0, n = cases.size();
    for (int i = 0; i < n; i++) {
      try {
        calculate(cases.get(i));
      } catch (Throwable e) {
        e.printStackTrace();
      }
      if (cases.get(i).winner != null)
        ++solved;
      System.out.println((i+1) + " case(s) processed, " + solved + " solved.");
    }

    print ""    
    print "----"

    boolean allSolved = solved == n;
    if (!allSolved) {
      System.out.println();
      System.out.print("Unsolved: ");
      for (Case case : cases)
        if (case.winner == null)
          System.out.print(case.id + " ");
      System.out.println();
    }
    if (solved != 0) {
      System.out.println();
      System.out.print("Solved: ");
      for (Case case : cases)
        if (case.winner != null)
          System.out.print(case.id + " ");
      System.out.println();
    }
    System.out.println();
    System.out.println(allSolved ? "ALL SOLVED (" + solved + ")" : "Solved " + solved + " out of " + n + ".");
    print ""
  }
  
  static class Case {
    String id;
    List<String[]> fullExamples = new ArrayList<String[]>();
    List<String> halfExamples = new ArrayList<String>();
    List<String[]> examples1, examples2;
    Learner winner;
  }

  static void parse(String arg) tex {
    Case case = new Case();
    String text;
    if (arg != null) {
      case.id = arg;
      text = loadSnippet(arg);
    } else {
      case.id = "input.txt";
      text = loadTextFile("input/input.txt", null);
      if (text == null) {
        //case.id = "#2000455";  // example input
        case.id = "#681"; // a collection of "all cases"!
        text = loadSnippet(case.id);
      }
    }
    
    // it's a collection of cases!
    if (text.trim().startsWith("#")) {
      for (String line : toLines(text))
        parse(line);
      return;
    }
    
    // it's a "Continue:" task - transform to I/O format
    if (text.trim().startsWith("Continue:")) {
      List<String> lines = toLines(text);
      new StringBuilder buf;
      for (int i = 1; i < lines.size(); i++) {
        buf.append("In: " + quote("" + i) + "\n");
        buf.append("Out: " + quote(lines.get(i)) + "\n");
      }
      int numAsking = 3;
      for (int i = lines.size(); i < lines.size()+numAsking; i++)
        buf.append("In: " + quote("" + i) + "\n");
      text = buf.toString();
    }
      
    System.out.println(text);
    String in = null, out = null;
    
    for (String line : toLines(text)) {
      if (line.startsWith("I")) { // "In: " or "I: "
        if (in != null)
          case.halfExamples.add(in);
        in = unquote(line.substring(line.indexOf(':')+1).trim());
        out = null;
      } else if (line.startsWith("O")) { // "Out: " or "O: "
        out = unquote(line.substring(line.indexOf(':')+1).trim());
        System.out.println(quote(in) + " => " + quote(out));
        case.fullExamples.add(new String[] {in, out});
        in = out = null;
      }
    }
    
    if (in != null)
      case.halfExamples.add(in);
    cases.add(case);
  }
  
  static void calculate(Case case) tex {
    if (case.fullExamples.size() < 2)
      throw new RuntimeException("Too few examples (" + case.fullExamples.size() + ")");
    int splitPoint = case.fullExamples.size()-1;
    System.out.println("Full examples: " + case.fullExamples.size() + ", splitPoint: " + splitPoint);
    case.examples1 = case.fullExamples.subList(0, splitPoint);
    case.examples2 = case.fullExamples.subList(splitPoint, case.fullExamples.size());
    
    Learner learner = findOKLearner(case);
    if (learner == null)
      print "\nProblem not solved"
    else {
      print "\nSolved!"
      case.winner = learner;
      Code code = new Code();
      learner.toJava(code);
      System.out.println("Java:");
      System.out.println(indent("  ", code.getTranslators()));
      System.out.println(indent("  ", code.buf.toString()));
      for (String in : case.halfExamples) {
        Object out = learner.processIn(in);
        System.out.println(quote(in) + " =>! " + quote((String) out));
      }
    }
  }
  
  static Learner findOKLearner(Case case) {
    for (Learner learner : makeLearners()) try {
      if (learnerOK(learner, case))
        return learner;
    } catch (Throwable e) {
      e.printStackTrace();
    }
    return null;
  }
  
  static boolean learnerOK(Learner learner, Case case) {
    String[] _e = null;
    try {
      for (String[] e : case.examples1) {
        _e = e;
        learner.processInOut(e[0], e[1]);
      }
      
      // full validation against all examples
      for (String[] e : case.fullExamples) {
        _e = e;
        String out = (String) learner.processIn(e[0]);
        if (!e[1].equals(out)) {
          System.out.println("[fail] " + learner + " on " + quote(e[0]) + " - got: " + quote(out) + " rather than: " + quote(e[1]));
          return false;
        }
      }
      return true; // all test examples passed
    } catch (Throwable e) {
        System.out.println("[fail] " + learner + " on " + (_e == null ? "?" : quote(_e[0])) + " - " + e);
      silentException(e);
      return false;
    }
  }
  
  static void silentException(Throwable e) {
  }
  
  static Iterable<Learner> makeLearners() {
    List<Learner> list = new ArrayList<Learner>();
    //list.add(new LId()); // subsumed by trivial case of PrefixSuffix
    list.add(new LPrefixSuffix());
    list.add(new LSplitInput(new LOutPattern()));
    list.add(new LInputPattern());
    list.add(new LFixed());
    list.add(new LBoth(new RFJavaTok(), new LEach(new LFixedFunction(new EscapeCase()))));
    list.add(new LCharShift());
    return list;
  }
  
  public static String unquote(String s) {
    if (s.startsWith("\"") && s.endsWith("\"") && s.length() > 1)
      return s.substring(1, s.length()-1).replace("\\\"", "\"").replace("\\\\", "\\"); // SHOULD work...
    else
      return s; // Return SOMETHING
  }
  
  public static String quote(String s) {
    if (s == null) return "null";
    return "\"" + s.replace("\\", "\\\\").replace("\"", "\\\"") + "\"";
  }
  
  static String indent(String indent, String s) {
    return indent + s.replace("\n", "\n" + indent);
  }
  
  static void debugOn(String name) {
    try {
      Class c = Class.forName("main$" + name);
      Field field;
      while (true)
        try {
          field = c.getDeclaredField("debug");
          break;
        } catch  (NoSuchFieldException e) {
          c = c.getSuperclass();
        }
      field.setBoolean(null, true);
    } catch (Exception e) {
      e.printStackTrace();
      System.err.println("Cannot debug class " + name);
    }
  }
  
  // splits the input at some point, takes only one part
  static class LSplitInput implements Learner {
    int splitIdx = 1; // split after first character
    Learner baseLearner;
    
    LSplitInput(Learner baseLearner) {
      this.baseLearner = baseLearner;
    }
    
    public void processInOut(Object _in, Object _out) {
      String in = (String) _in, out = (String) _out;
      in = in.substring(splitIdx);
      baseLearner.processInOut(in, out);
    }
    
    public Object processIn(Object _in) {
      String in = (String) _in;
      in = in.substring(splitIdx);
      return baseLearner.processIn(in);
    }
    
    public void toJava(Code code) {
      code.line(code.var + " = ((String) " + code.var + ").substring(" + splitIdx + ");");
      baseLearner.toJava(code);
    }
  }
  
  // if input appears in output in fixed pattern
  static class LOutPattern implements Learner {
    String pattern = "%!%";

    public void processInOut(Object _in, Object _out) {
      String in = (String) _in, out = (String) _out;
      pattern = out.replace(in, "%!%");
    }
    
    public String processIn(Object _in) {
      String in = (String) _in;
      return pattern.replace("%!%", in);
    }
    
    public void toJava(Code code) {
      code.line(code.var + " = " + quote(pattern) + ".replace(" + quote("%!%") + ", (String) " + code.var + ");");
    }
  }
  
  // learns to exchange common prefixes and suffixes
  static class LPrefixSuffix extends LearnerImpl {
    static boolean debug;
    String prefixIn, suffixIn, prefixOut, suffixOut;
    
    public void processInOut(Object _in, Object _out) {
      String in = (String) _in, out = (String) _out;
      updateIn(in);
      prefixOut = prefixOut == null ? out : commonPrefix(prefixOut, out);
      suffixOut = suffixOut == null ? out : commonSuffix(suffixOut, out);
      if (debug)
        printState("processInOut(" + quote(in) + ", " + quote(out) + ")");
    }
    
    void updateIn(String in) {
      prefixIn = prefixIn == null ? in : commonPrefix(prefixIn, in);
      suffixIn = suffixIn == null ? in : commonSuffix(suffixIn, in);
      if (debug)
        printState("updateIn(" + quote(in) + ")");
    }

    public String processIn(Object _in) {
      String in = (String) _in;
      //System.out.println("[before last info] " + quote(prefixIn) + " " + quote(suffixIn) + " " + quote(prefixOut) + " " + quote(suffixOut));
      //System.out.println("[last info] " + quote(in));
      
      // use latest information
      String p = prefixIn, s = suffixIn;
      updateIn(in);
      prefixOut = prefixOut.substring(0, prefixOut.length()-(p.length()-prefixIn.length()));
      suffixOut = suffixOut.substring(s.length()-suffixIn.length());
      
      //System.out.println("[after last info] " + quote(prefixIn) + " " + quote(suffixIn) + " " + quote(prefixOut) + " " + quote(suffixOut));
      String core = in.substring(prefixIn.length(), in.length()-suffixIn.length());
      return prefixOut + core + suffixOut;
    }
    
    public void toJava(Code code) {
      code.line(code.var + " = ((String) " + code.var + ").substring(" + prefixIn.length() + ", in.length()-" + suffixIn.length() + ");");
      code.line(code.var + " = " + quote(prefixOut) + " + " + code.var + " + " + quote(suffixOut) + ";");
    }
    
    void printState(String text) {
      System.out.println(text);
      printVars();
    }
  }
  
  // for "find" tasks (e.g. "abcde" to "[[abc]]de")
  static class LInputPattern implements Learner {
    String regexp = "";
    
    public void processInOut(Object _in, Object _out) {
      String in = (String) _in, out = (String) _out;
      int i = out.indexOf("[["), j = out.indexOf("]]", i+1);
      if (j < 0) return;
      String s = out.substring(i+2, j);
      regexp = s.replaceAll("\\d+", Matcher.quoteReplacement("\\d+"));
      System.out.println("regexp: " + regexp);
    }
    
    public String processIn(Object _in) {
      String in = (String) _in;
      if (regexp.length() == 0)
        return in;
      else
        return in.replaceAll("(" + regexp + ")", "[[$1]]");
    }
    
    public void toJava(Code code) {
      code.line(code.var + " = ((String) " + code.var + ").replaceAll(" + quote("(" + regexp + ")") + ", \"[[$1]]\");");
    }
  }
  
  static class LFixed extends LearnerImpl {
    static boolean debug;
    Object value;
    
    public void processInOut(Object in, Object out) {
      value = out;
      if (debug)
        printVars();
    }
    
    public Object processIn(Object in) {
      return value;
    }
    
    public void toJava(Code code) {
      code.line(code.var + " = " + quote((String) value) + ";");
    }
  }
  
  static void fail(String msg) {
    throw new RuntimeException(msg);
  }
  
  static void assertSameSize(List a, List b) {
    if (a.size() != b.size())
      fail("wrong list sizes");
  }

  // process lists in parallel
  // (in and out must be a list of same length)
  static class LEach extends LearnerImpl {
    static boolean debug;
    Learner base;
    
    LEach(Learner base) {
      this.base = base;
    }
    
    public void processInOut(Object _in, Object _out) {
      List in = (List) _in, out = (List) _out;
      assertSameSize(in, out);
      for (int i = 0; i < in.size(); i++)
        base.processInOut(in.get(i), out.get(i));
      if (debug)
        printVars();
    }
    
    public Object processIn(Object _in) {
      List in = (List) _in;
      List out = new ArrayList();
      for (Object x : in)
        out.add(base.processIn(x));
      return out;
    }
    
    public void toJava(Code code) {
      code.line("List out = new ArrayList();");
      code.line("for (Object x : (List) in) {");
      code.indent();
      code.line("in = x;");
      base.toJava(code);
      code.line("out.add(in);");
      code.unindent();
      code.line("}");
      code.line("in = out;");
    }
  }
  
  static class LBoth extends LearnerImpl {
    ReversibleFunction f;
    Learner base;
    
    LBoth(ReversibleFunction f, Learner base) {
      this.f = f;
      this.base = base;
    }
    
    public void processInOut(Object in, Object out) {
      in = f.process(in);
      out = f.process(out);
      base.processInOut(in, out);
    }
    
    public Object processIn(Object in) {
      in = f.process(in);
      in = base.processIn(in);
      in = f.unprocess(in);
      return in;
    }
    
    public void toJava(Code code) {
      f.toJava_process(code);
      base.toJava(code);
      f.toJava_unprocess(code);
    }
  }
  
  static class RFJavaTok implements ReversibleFunction {
    public Object process(Object in) {
      return JavaTok.split((String) in);
    }
    
    public Object unprocess(Object in) {
      return JavaTok.join((List) in);
    }
    
    public void toJava_process(Code code) {
      code.translators("!636", "!class JavaTok");
      code.line(code.var + " = JavaTok.split((String) " + code.var + ");");
    }
    
    public void toJava_unprocess(Code code) {
      code.translators("!636", "!class JavaTok");
      code.line(code.var + " = JavaTok.join((List) " + code.var + ");");
    }
  }
  
  static class LFixedFunction extends LearnerImpl {
    Function f;
    
    LFixedFunction(Function f) {
      this.f = f;
    }
    
    public void processInOut(Object in, Object out) {
    }
    
    public Object processIn(Object in) {
      return f.process(in);
    }
    
    public void toJava(Code code) {
      f.toJava_process(code);
    }
  }
  
  static class EscapeCase implements Function {
    static boolean debug;
    
    public Object process(Object _in) {
      if (debug)
        System.out.println("EscapeCase: " + _in);
      String in = (String) _in;
      return in.equals("case") ? "_case" : in;
    }
    
    public void toJava_process(Code code) {
      code.line("if (\"case\".equals(" + code.var + ")) " + code.var + " = " + quote("_case") + ";");
    }
  }
  
  static class LCharShift extends LearnerImpl {
    int shift;
    
    public void processInOut(Object _in, Object _out) {
      String in = (String) _in, out = (String) _out;
      shift = (int) out.charAt(0) - (int) in.charAt(0);
    }
    
    public Object processIn(Object _in) {
      String in = (String) _in;
      char[] c = new char[in.length()];
      for (int i = 0; i < c.length; i++)
        c[i] = (char) ((int) in.charAt(i) + shift);
      return new String(c);
    }
    
    public void toJava(Code code) {
      code.line("char[] c = new char[((String) " + code.var + ").length()];");
      code.line("for (int i = 0; i < c.length; i++)");
      code.line("  c[i] = (char) ((int) ((String) " + code.var + ").charAt(i) " + (shift < 0 ? " - " + (-shift) : " + " + shift) + ");");
      code.line(code.var + " = new String(c);");
    }
  }
}

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Snippet ID:	#690
Snippet name:	IOIOI Processor (v6, with char shift)
Eternal ID of this version:	#690/1
Text MD5:	49963becf59d0b40dda655609c26e097
Author:	stefan
Category:
Type:	JavaX source code
Public (visible to everyone):	Yes
Archived (hidden from active list):	No
Created/modified:	2015-07-29 19:21:05
Source code size:	18221 bytes / 608 lines
Pitched / IR pitched:	No / Yes
Views / Downloads:	589 / 507
Referenced in:	[show references]

< > BotCompany Repo | #690 // IOIOI Processor (v6, with char shift)

JavaX source code - run with: x30.jar

Author comment

1	!636
2	!quickmain
3	!auto-import
4	!standard functions
5	!quicknew
6	!1000346 // use "case" as a variable name
7	!688 // buf.isEmpty
8	!class JavaTok
9
10	import java.lang.reflect.*;
11
12	interface Function {
13	public Object process(Object in);
14	public void toJava_process(Code code);
15	}
16
17	interface ReversibleFunction extends Function {
18	public Object unprocess(Object in);
19	public void toJava_unprocess(Code code);
20	}
21
22	// generic learner (works on objects)
23	interface Learner {
24	public void processInOut(Object in, Object out);
25	public Object processIn(Object in);
26	public void toJava(Code code);
27	}
28
29	abstract class Base {
30	void printVars() {
31	new StringBuilder buf;
32	Field[] fields = getClass().getDeclaredFields();
33	for (Field field : fields) {
34	if ((field.getModifiers() & Modifier.STATIC) != 0)
35	continue;
36	Object value;
37	try {
38	value = field.get(this);
39	} catch (Exception e) {
40	value = "?";
41	}
42
43	if (!buf.isEmpty()) buf.append(", ");
44	buf.append(field.getName() + "=" + value);
45	}
46	System.out.println(buf.toString());
47	}
48	}
49
50	abstract class LearnerImpl extends Base implements Learner {
51	}
52
53	class Code {
54	StringBuilder buf = new StringBuilder();
55	String var = "in";
56	String indent = "";
57	List<String> translators = new ArrayList<String>();
58
59	void line(String line) {
60	buf.append(indent).append(line).append('\n');
61	}
62
63	void indent() {
64	indent += " ";
65	}
66
67	void unindent() {
68	indent = indent.substring(0, indent.length()-2);
69	}
70
71	void translators(String... ids) {
72	for (String id : ids)
73	if (! translators.contains(id)) // space is needed otherwise translator 636 is fooled :)
74	translators.add(id);
75	}
76
77	String getTranslators() {
78	return main.fromLines(translators);
79	}
80	}
81
82	main {
83	static List<Case> cases = new ArrayList<Case>();
84
85	psvm {
86	String snippetID = null;
87
88	for (int i = 0; i < args.length; i++) {
89	String arg = args[i];
90	if (arg.equals("debug"))
91	debugOn(args[++i]);
92	else if (isSnippetID(arg))
93	snippetID = arg;
94	else
95	System.err.println("Unknown argument: " + arg + ", ignoring");
96	}
97
98	parse(snippetID);
99
100	int solved = 0, n = cases.size();
101	for (int i = 0; i < n; i++) {
102	try {
103	calculate(cases.get(i));
104	} catch (Throwable e) {
105	e.printStackTrace();
106	}
107	if (cases.get(i).winner != null)
108	++solved;
109	System.out.println((i+1) + " case(s) processed, " + solved + " solved.");
110	}
111
112	print ""
113	print "----"
114
115	boolean allSolved = solved == n;
116	if (!allSolved) {
117	System.out.println();
118	System.out.print("Unsolved: ");
119	for (Case case : cases)
120	if (case.winner == null)
121	System.out.print(case.id + " ");
122	System.out.println();
123	}
124	if (solved != 0) {
125	System.out.println();
126	System.out.print("Solved: ");
127	for (Case case : cases)
128	if (case.winner != null)
129	System.out.print(case.id + " ");
130	System.out.println();
131	}
132	System.out.println();
133	System.out.println(allSolved ? "ALL SOLVED (" + solved + ")" : "Solved " + solved + " out of " + n + ".");
134	print ""
135	}
136
137	static class Case {
138	String id;
139	List<String[]> fullExamples = new ArrayList<String[]>();
140	List<String> halfExamples = new ArrayList<String>();
141	List<String[]> examples1, examples2;
142	Learner winner;
143	}
144
145	static void parse(String arg) tex {
146	Case case = new Case();
147	String text;
148	if (arg != null) {
149	case.id = arg;
150	text = loadSnippet(arg);
151	} else {
152	case.id = "input.txt";
153	text = loadTextFile("input/input.txt", null);
154	if (text == null) {
155	//case.id = "#2000455"; // example input
156	case.id = "#681"; // a collection of "all cases"!
157	text = loadSnippet(case.id);
158	}
159	}
160
161	// it's a collection of cases!
162	if (text.trim().startsWith("#")) {
163	for (String line : toLines(text))
164	parse(line);
165	return;
166	}
167
168	// it's a "Continue:" task - transform to I/O format
169	if (text.trim().startsWith("Continue:")) {
170	List<String> lines = toLines(text);
171	new StringBuilder buf;
172	for (int i = 1; i < lines.size(); i++) {
173	buf.append("In: " + quote("" + i) + "\n");
174	buf.append("Out: " + quote(lines.get(i)) + "\n");
175	}
176	int numAsking = 3;
177	for (int i = lines.size(); i < lines.size()+numAsking; i++)
178	buf.append("In: " + quote("" + i) + "\n");
179	text = buf.toString();
180	}
181
182	System.out.println(text);
183	String in = null, out = null;
184
185	for (String line : toLines(text)) {
186	if (line.startsWith("I")) { // "In: " or "I: "
187	if (in != null)
188	case.halfExamples.add(in);
189	in = unquote(line.substring(line.indexOf(':')+1).trim());
190	out = null;
191	} else if (line.startsWith("O")) { // "Out: " or "O: "
192	out = unquote(line.substring(line.indexOf(':')+1).trim());
193	System.out.println(quote(in) + " => " + quote(out));
194	case.fullExamples.add(new String[] {in, out});
195	in = out = null;
196	}
197	}
198
199	if (in != null)
200	case.halfExamples.add(in);
201	cases.add(case);
202	}
203
204	static void calculate(Case case) tex {
205	if (case.fullExamples.size() < 2)
206	throw new RuntimeException("Too few examples (" + case.fullExamples.size() + ")");
207	int splitPoint = case.fullExamples.size()-1;
208	System.out.println("Full examples: " + case.fullExamples.size() + ", splitPoint: " + splitPoint);
209	case.examples1 = case.fullExamples.subList(0, splitPoint);
210	case.examples2 = case.fullExamples.subList(splitPoint, case.fullExamples.size());
211
212	Learner learner = findOKLearner(case);
213	if (learner == null)
214	print "\nProblem not solved"
215	else {
216	print "\nSolved!"
217	case.winner = learner;
218	Code code = new Code();
219	learner.toJava(code);
220	System.out.println("Java:");
221	System.out.println(indent(" ", code.getTranslators()));
222	System.out.println(indent(" ", code.buf.toString()));
223	for (String in : case.halfExamples) {
224	Object out = learner.processIn(in);
225	System.out.println(quote(in) + " =>! " + quote((String) out));
226	}
227	}
228	}
229
230	static Learner findOKLearner(Case case) {
231	for (Learner learner : makeLearners()) try {
232	if (learnerOK(learner, case))
233	return learner;
234	} catch (Throwable e) {
235	e.printStackTrace();
236	}
237	return null;
238	}
239
240	static boolean learnerOK(Learner learner, Case case) {
241	String[] _e = null;
242	try {
243	for (String[] e : case.examples1) {
244	_e = e;
245	learner.processInOut(e[0], e[1]);
246	}
247
248	// full validation against all examples
249	for (String[] e : case.fullExamples) {
250	_e = e;
251	String out = (String) learner.processIn(e[0]);
252	if (!e[1].equals(out)) {
253	System.out.println("[fail] " + learner + " on " + quote(e[0]) + " - got: " + quote(out) + " rather than: " + quote(e[1]));
254	return false;
255	}
256	}
257	return true; // all test examples passed
258	} catch (Throwable e) {
259	System.out.println("[fail] " + learner + " on " + (_e == null ? "?" : quote(_e[0])) + " - " + e);
260	silentException(e);
261	return false;
262	}
263	}
264
265	static void silentException(Throwable e) {
266	}
267
268	static Iterable<Learner> makeLearners() {
269	List<Learner> list = new ArrayList<Learner>();
270	//list.add(new LId()); // subsumed by trivial case of PrefixSuffix
271	list.add(new LPrefixSuffix());
272	list.add(new LSplitInput(new LOutPattern()));
273	list.add(new LInputPattern());
274	list.add(new LFixed());
275	list.add(new LBoth(new RFJavaTok(), new LEach(new LFixedFunction(new EscapeCase()))));
276	list.add(new LCharShift());
277	return list;
278	}
279
280	public static String unquote(String s) {
281	if (s.startsWith("\"") && s.endsWith("\"") && s.length() > 1)
282	return s.substring(1, s.length()-1).replace("\\\"", "\"").replace("\\\\", "\\"); // SHOULD work...
283	else
284	return s; // Return SOMETHING
285	}
286
287	public static String quote(String s) {
288	if (s == null) return "null";
289	return "\"" + s.replace("\\", "\\\\").replace("\"", "\\\"") + "\"";
290	}
291
292	static String indent(String indent, String s) {
293	return indent + s.replace("\n", "\n" + indent);
294	}
295
296	static void debugOn(String name) {
297	try {
298	Class c = Class.forName("main$" + name);
299	Field field;
300	while (true)
301	try {
302	field = c.getDeclaredField("debug");
303	break;
304	} catch (NoSuchFieldException e) {
305	c = c.getSuperclass();
306	}
307	field.setBoolean(null, true);
308	} catch (Exception e) {
309	e.printStackTrace();
310	System.err.println("Cannot debug class " + name);
311	}
312	}
313
314	// splits the input at some point, takes only one part
315	static class LSplitInput implements Learner {
316	int splitIdx = 1; // split after first character
317	Learner baseLearner;
318
319	LSplitInput(Learner baseLearner) {
320	this.baseLearner = baseLearner;
321	}
322
323	public void processInOut(Object _in, Object _out) {
324	String in = (String) _in, out = (String) _out;
325	in = in.substring(splitIdx);
326	baseLearner.processInOut(in, out);
327	}
328
329	public Object processIn(Object _in) {
330	String in = (String) _in;
331	in = in.substring(splitIdx);
332	return baseLearner.processIn(in);
333	}
334
335	public void toJava(Code code) {
336	code.line(code.var + " = ((String) " + code.var + ").substring(" + splitIdx + ");");
337	baseLearner.toJava(code);
338	}
339	}
340
341	// if input appears in output in fixed pattern
342	static class LOutPattern implements Learner {
343	String pattern = "%!%";
344
345	public void processInOut(Object _in, Object _out) {
346	String in = (String) _in, out = (String) _out;
347	pattern = out.replace(in, "%!%");
348	}
349
350	public String processIn(Object _in) {
351	String in = (String) _in;
352	return pattern.replace("%!%", in);
353	}
354
355	public void toJava(Code code) {
356	code.line(code.var + " = " + quote(pattern) + ".replace(" + quote("%!%") + ", (String) " + code.var + ");");
357	}
358	}
359
360	// learns to exchange common prefixes and suffixes
361	static class LPrefixSuffix extends LearnerImpl {
362	static boolean debug;
363	String prefixIn, suffixIn, prefixOut, suffixOut;
364
365	public void processInOut(Object _in, Object _out) {
366	String in = (String) _in, out = (String) _out;
367	updateIn(in);
368	prefixOut = prefixOut == null ? out : commonPrefix(prefixOut, out);
369	suffixOut = suffixOut == null ? out : commonSuffix(suffixOut, out);
370	if (debug)
371	printState("processInOut(" + quote(in) + ", " + quote(out) + ")");
372	}
373
374	void updateIn(String in) {
375	prefixIn = prefixIn == null ? in : commonPrefix(prefixIn, in);
376	suffixIn = suffixIn == null ? in : commonSuffix(suffixIn, in);
377	if (debug)
378	printState("updateIn(" + quote(in) + ")");
379	}
380
381	public String processIn(Object _in) {
382	String in = (String) _in;
383	//System.out.println("[before last info] " + quote(prefixIn) + " " + quote(suffixIn) + " " + quote(prefixOut) + " " + quote(suffixOut));
384	//System.out.println("[last info] " + quote(in));
385
386	// use latest information
387	String p = prefixIn, s = suffixIn;
388	updateIn(in);
389	prefixOut = prefixOut.substring(0, prefixOut.length()-(p.length()-prefixIn.length()));
390	suffixOut = suffixOut.substring(s.length()-suffixIn.length());
391
392	//System.out.println("[after last info] " + quote(prefixIn) + " " + quote(suffixIn) + " " + quote(prefixOut) + " " + quote(suffixOut));
393	String core = in.substring(prefixIn.length(), in.length()-suffixIn.length());
394	return prefixOut + core + suffixOut;
395	}
396
397	public void toJava(Code code) {
398	code.line(code.var + " = ((String) " + code.var + ").substring(" + prefixIn.length() + ", in.length()-" + suffixIn.length() + ");");
399	code.line(code.var + " = " + quote(prefixOut) + " + " + code.var + " + " + quote(suffixOut) + ";");
400	}
401
402	void printState(String text) {
403	System.out.println(text);
404	printVars();
405	}
406	}
407
408	// for "find" tasks (e.g. "abcde" to "[[abc]]de")
409	static class LInputPattern implements Learner {
410	String regexp = "";
411
412	public void processInOut(Object _in, Object _out) {
413	String in = (String) _in, out = (String) _out;
414	int i = out.indexOf("[["), j = out.indexOf("]]", i+1);
415	if (j < 0) return;
416	String s = out.substring(i+2, j);
417	regexp = s.replaceAll("\\d+", Matcher.quoteReplacement("\\d+"));
418	System.out.println("regexp: " + regexp);
419	}
420
421	public String processIn(Object _in) {
422	String in = (String) _in;
423	if (regexp.length() == 0)
424	return in;
425	else
426	return in.replaceAll("(" + regexp + ")", "[[$1]]");
427	}
428
429	public void toJava(Code code) {
430	code.line(code.var + " = ((String) " + code.var + ").replaceAll(" + quote("(" + regexp + ")") + ", \"[[$1]]\");");
431	}
432	}
433
434	static class LFixed extends LearnerImpl {
435	static boolean debug;
436	Object value;
437
438	public void processInOut(Object in, Object out) {
439	value = out;
440	if (debug)
441	printVars();
442	}
443
444	public Object processIn(Object in) {
445	return value;
446	}
447
448	public void toJava(Code code) {
449	code.line(code.var + " = " + quote((String) value) + ";");
450	}
451	}
452
453	static void fail(String msg) {
454	throw new RuntimeException(msg);
455	}
456
457	static void assertSameSize(List a, List b) {
458	if (a.size() != b.size())
459	fail("wrong list sizes");
460	}
461
462	// process lists in parallel
463	// (in and out must be a list of same length)
464	static class LEach extends LearnerImpl {
465	static boolean debug;
466	Learner base;
467
468	LEach(Learner base) {
469	this.base = base;
470	}
471
472	public void processInOut(Object _in, Object _out) {
473	List in = (List) _in, out = (List) _out;
474	assertSameSize(in, out);
475	for (int i = 0; i < in.size(); i++)
476	base.processInOut(in.get(i), out.get(i));
477	if (debug)
478	printVars();
479	}
480
481	public Object processIn(Object _in) {
482	List in = (List) _in;
483	List out = new ArrayList();
484	for (Object x : in)
485	out.add(base.processIn(x));
486	return out;
487	}
488
489	public void toJava(Code code) {
490	code.line("List out = new ArrayList();");
491	code.line("for (Object x : (List) in) {");
492	code.indent();
493	code.line("in = x;");
494	base.toJava(code);
495	code.line("out.add(in);");
496	code.unindent();
497	code.line("}");
498	code.line("in = out;");
499	}
500	}
501
502	static class LBoth extends LearnerImpl {
503	ReversibleFunction f;
504	Learner base;
505
506	LBoth(ReversibleFunction f, Learner base) {
507	this.f = f;
508	this.base = base;
509	}
510
511	public void processInOut(Object in, Object out) {
512	in = f.process(in);
513	out = f.process(out);
514	base.processInOut(in, out);
515	}
516
517	public Object processIn(Object in) {
518	in = f.process(in);
519	in = base.processIn(in);
520	in = f.unprocess(in);
521	return in;
522	}
523
524	public void toJava(Code code) {
525	f.toJava_process(code);
526	base.toJava(code);
527	f.toJava_unprocess(code);
528	}
529	}
530
531	static class RFJavaTok implements ReversibleFunction {
532	public Object process(Object in) {
533	return JavaTok.split((String) in);
534	}
535
536	public Object unprocess(Object in) {
537	return JavaTok.join((List) in);
538	}
539
540	public void toJava_process(Code code) {
541	code.translators("!636", "!class JavaTok");
542	code.line(code.var + " = JavaTok.split((String) " + code.var + ");");
543	}
544
545	public void toJava_unprocess(Code code) {
546	code.translators("!636", "!class JavaTok");
547	code.line(code.var + " = JavaTok.join((List) " + code.var + ");");
548	}
549	}
550
551	static class LFixedFunction extends LearnerImpl {
552	Function f;
553
554	LFixedFunction(Function f) {
555	this.f = f;
556	}
557
558	public void processInOut(Object in, Object out) {
559	}
560
561	public Object processIn(Object in) {
562	return f.process(in);
563	}
564
565	public void toJava(Code code) {
566	f.toJava_process(code);
567	}
568	}
569
570	static class EscapeCase implements Function {
571	static boolean debug;
572
573	public Object process(Object _in) {
574	if (debug)
575	System.out.println("EscapeCase: " + _in);
576	String in = (String) _in;
577	return in.equals("case") ? "_case" : in;
578	}
579
580	public void toJava_process(Code code) {
581	code.line("if (\"case\".equals(" + code.var + ")) " + code.var + " = " + quote("_case") + ";");
582	}
583	}
584
585	static class LCharShift extends LearnerImpl {
586	int shift;
587
588	public void processInOut(Object _in, Object _out) {
589	String in = (String) _in, out = (String) _out;
590	shift = (int) out.charAt(0) - (int) in.charAt(0);
591	}
592
593	public Object processIn(Object _in) {
594	String in = (String) _in;
595	char[] c = new char[in.length()];
596	for (int i = 0; i < c.length; i++)
597	c[i] = (char) ((int) in.charAt(i) + shift);
598	return new String(c);
599	}
600
601	public void toJava(Code code) {
602	code.line("char[] c = new char[((String) " + code.var + ").length()];");
603	code.line("for (int i = 0; i < c.length; i++)");
604	code.line(" c[i] = (char) ((int) ((String) " + code.var + ").charAt(i) " + (shift < 0 ? " - " + (-shift) : " + " + shift) + ");");
605	code.line(code.var + " = new String(c);");
606	}
607	}
608	}