Java_CodeGen.jrag 27.4 KB
Newer Older
Anders Nilsson's avatar
Anders Nilsson committed
1
2
3
4
5
6
import java.io.*;
import java.util.*;

aspect Java_CodeGenEnv {

  // Environment wrapper for Java-code generation
7
  // handles indentation, file writing,
Anders Nilsson's avatar
Anders Nilsson committed
8
9
10
11
12
13
14
15
16

  public class Java_env {

    private int indent;
    private int depth;
    private Java_printer printer;
    private HashMap unique = new HashMap();

    final private class Java_printer {
17

Anders Nilsson's avatar
Anders Nilsson committed
18
19
20
21
      private boolean newline = true;
      private File file;
      private PrintStream out;
      private IOException exception;
22

Anders Nilsson's avatar
Anders Nilsson committed
23
24
25

      public Java_printer(File f) {
  	file = f;
26
27
28
29
        File parentFile = f.getParentFile();
        if(parentFile != null) {
            parentFile.mkdirs();
        }
Anders Nilsson's avatar
Anders Nilsson committed
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
      }

     public Java_printer(PrintStream out) {
        this.out = out;
      }

      public void close() throws IOException {
	if (out != null) {
  	  out.close();
        }
	if (exception != null) {
	  throw exception;
        }
      }

      public PrintStream getPrintStream() {
	return(out);
      }

      public void checkOpen() {
	if (out == null && exception == null) {
          try {
    	    out = new PrintStream(new FileOutputStream(file));
          } catch (IOException e) {
	    exception = e;
          }
        }
      }

      public void print(Java_env env, String s) {
	checkOpen();
        if (newline) {
          newline = false;
          for (int i = 0 ; i < env.indent ; i++) {
            out.print("  ");
          }
        }
        out.print(s);
      }

      public void println(Java_env env, String s) {
	checkOpen();
        print(env, s);
        out.println();
        newline = true;
      }
    }

78
    private Java_env(int indent) {
Anders Nilsson's avatar
Anders Nilsson committed
79
      this.indent = indent;
80
81
    }

82
83
    private Java_env(Java_printer printer) {
      this(0);
Anders Nilsson's avatar
Anders Nilsson committed
84
85
86
      this.printer = printer;
    }

87
88
    public Java_env(File f) {
      this(0);
Anders Nilsson's avatar
Anders Nilsson committed
89
90
91
      this.printer = new Java_printer(f);
    }

92
93
    public Java_env(PrintStream out) {
      this(0);
Anders Nilsson's avatar
Anders Nilsson committed
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
      this.printer = new Java_printer(out);
    }

    public void close() throws IOException {
      printer.close();
    }

    public PrintStream getPrintStream() {
      return printer.getPrintStream();
    }
    public void indent(int amount) {
      indent += amount;
    }

    public void indent() {
      indent(1);
    }

    public void unindent(int amount) {
      indent -= amount;
    }

    public void unindent() {
      unindent(1);
    }

    public void print(String s) {
      printer.print(this, s);
    }

    public void println(String s) {
      printer.println(this, s);
    }

    public void println() {
      printer.println(this, "");
    }

    public int getDepth() {
      return depth;
    }

    public String print_for_begin(String limit) {
      print("for (int i_" + depth + " = 0 ; ");
      print("i_" + depth + " < " + limit + " ; ");
      println("i_" + depth + "++) {");
      indent();
      depth++;
      return "[i_" + (depth - 1) + "]";
    }

    public void print_for_end() {
      depth--;
      unindent();
      println("}");
    }

151
152
153
154
155
156
157
158
159
160
    public void print_block_begin() {
      println("{");
      indent();
    }

    public void print_block_end() {
      unindent();
      println("}");
    }

Anders Nilsson's avatar
Anders Nilsson committed
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
    public String getUnique(Object o) {
      String result = (String)unique.get(o);
      if (result == null) {
   	result = "_" + (unique.size() + 1) + "_";
      }
      unique.put(o, result);
      return result;
    }

  }

}

aspect Java_StructName {

  inh int Decl.Java_Depth();
  inh int Type.Java_Depth();
  eq Program.getDecl(int i).Java_Depth() = 0;
  eq StructType.getField(int i).Java_Depth() = Java_Depth() + 1;

  inh String Type.Java_structName();
  eq Program.getDecl(int i).Java_structName() = getDecl(i).getName();
  eq StructType.getField(int i).Java_structName() {
    if (Java_Depth() == 0) {
      return "struct_" + getField(i).getName();
    } else {
      return Java_structName() + "_" + getField(i).getName();
    }
  }
}

aspect Java_Void {

  syn boolean Decl.isVoid() = getType().isVoid();
195
  syn boolean UserType.isVoid() = decl().isVoid();
Anders Nilsson's avatar
Anders Nilsson committed
196
197
198
199
200
201
202
  syn boolean Type.isVoid() = false;
  syn boolean VoidType.isVoid() = true;

}

aspect Java_CodeGen {

203
  public void Program.J_gen(PrintStream ps, String pack) throws IOException {
204
    Java_env env;
205
    env = new Java_env(ps);
206
207
208
209
210
211
212
213
214
215
216
217
    for (int i = 0; i < getNumDecl(); i++) {
      Decl d = getDecl(i);
      try {
        d.Java_emitClass(env, pack);
      } catch (Error e) {
	System.err.println(d.getName());
	throw e;
      }
    }
    env.close();
  }

218
  public void Program.J_gen(String dir, String pack) throws IOException {
Anders Nilsson's avatar
Anders Nilsson committed
219
220
221
222
    Java_env env;
    for (int i = 0; i < getNumDecl(); i++) {
      Decl d = getDecl(i);
      try {
223
        env = new Java_env(new File(dir, d.getName() + ".java"));
Anders Nilsson's avatar
Anders Nilsson committed
224
225
226
227
228
229
230
231
232
        d.Java_emitClass(env, pack);
        env.close();
      } catch (Error e) {
	System.err.println(d.getName());
	throw e;
      }
    }
  }

233
  /** Experimental method for generating code to a map <classname, source>
234
    */
235
  public void Program.J_gen(Map<String,String> src, String pack) throws IOException {
236
237
238
239
240
241
    Java_env env;
    for (int i = 0; i < getNumDecl(); i++) {
      Decl d = getDecl(i);
      try {
        ByteArrayOutputStream bs = new ByteArrayOutputStream();
        PrintStream out = new PrintStream(bs);
242
        env = new Java_env(out);
243
244
245
246
247
248
249
250
251
        d.Java_emitClass(env, pack);
        env.close();
        src.put(d.getName(), bs.toString());
      } catch (Error e) {
	System.err.println(d.getName());
	throw e;
      }
    }
  }
252

Anders Nilsson's avatar
Anders Nilsson committed
253
254
255
256
257
}

aspect Java_Class {

  public void Decl.Java_emitClass(Java_env env, String pack) {
258
259
    throw new Error(this.getClass().getName() +
		    ".Java_emitClass(Java_env env, String pack)" +
Anders Nilsson's avatar
Anders Nilsson committed
260
261
262
		    " not declared");
  }

263
  public void Decl.Java_emitDeclPP(Java_env env) {
Anders Nilsson's avatar
Anders Nilsson committed
264
265
266
      // Hackish prettyprint preamble
      env.println("/* ");
      pp(env.getPrintStream());
267
268
269

      Java_emitUserTypeDeps(env, null, false);
      Java_emitUserTypeRefs(env, null, false);
Anders Nilsson's avatar
Anders Nilsson committed
270
271
      env.println("*/");

272
273
274
275
276
277
278
279
280
281
282
283
  }

  public void Decl.Java_emitUserTypeDeps(Java_env env, String via, boolean outputCode) {
        Iterator<Decl> it = type_dependencies().iterator();
        while(it.hasNext()) {
            Decl t = it.next();

            t.Java_emitUserTypeDeps(env, t.getName(), outputCode);
            if( outputCode){// && t.getType().isUserType() ) {
               env.println(t.getName()+".register(e);");
            } else {  // Just output a comment
	        String refpath = (via == null) ? "directly" : "indirectly via "+via;
284
	       env.println(" //Depends ("+refpath+") on "+t.getName() );
285
286
287
            }
        }
  }
288
289

public void Decl.Java_emitUserTypeRefs(Java_env env, String via, boolean outputCode) {
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
    if( isReferenced() ) {
        Iterator<Decl> it = type_references().iterator();
        while(it.hasNext()) {
            Decl t = it.next();

            t.Java_emitUserTypeRefs(env, t.getName(), outputCode);
            if(outputCode) {
               env.println(t.getName()+".register(e);");
            } else {  // Just output a comment
	        String refpath = (via == null) ? "directly" : "indirectly via "+via;
	       env.println(" //Is referenced ("+refpath+")  by "+t.getName() );
            }
        }
    }
 }


  public void Decl.Java_emitRegisterEncoder(Java_env env) {
    env.println("public static void register(Encoder e) throws IOException {");
    env.indent();
    env.println("register(e, true);");
    env.unindent();
    env.println("}");
    env.println();
    env.println("public static void register(Encoder e, boolean sendMetaData) throws IOException {");
    env.indent();
    Java_emitUserTypeDeps(env, null, true);
317
    env.println("e.register(dispatcher);");
318
319
320
321
322
323
324
    env.unindent();
    env.println("}");
    env.println();
  }

  public void TypeDecl.Java_emitClass(Java_env env, String pack) {
      Java_emitDeclPP(env);
Anders Nilsson's avatar
Anders Nilsson committed
325
      if (pack != null && pack.length() > 0) {
326
          env.println("package " + pack + ";");
Anders Nilsson's avatar
Anders Nilsson committed
327
328
      }

329
330
      env.println("import se.lth.control.labcomm2006.Constant;");
      env.println("import se.lth.control.labcomm2006.SampleType;");
331
332

      if (getType().Java_needInstance() || hasDependencies() || isReferenced()) {
333
334
335
          env.println("import se.lth.control.labcomm2006.Encoder;");
          env.println("import se.lth.control.labcomm2006.SampleDispatcher;");
          env.println("import se.lth.control.labcomm2006.SampleHandler;");
336
          env.println("import java.io.IOException;");
337
          env.println("import se.lth.control.labcomm2006.Decoder;");
338
339
340
341
      }
      // For types without type_dependencies and not needing an instance,
      // currently just an empty class is generated

Anders Blomdell's avatar
Anders Blomdell committed
342
      env.println("public class " + getName() + " implements SampleType {");
Anders Nilsson's avatar
Anders Nilsson committed
343
      env.println();
344

Anders Nilsson's avatar
Anders Nilsson committed
345
      env.indent();
346
347
348
349
350
351
352
353
354
355
356
357
358
359
      if (getType().Java_needInstance()) {
        getType().Java_emitInstance(env);
        Java_emitEncoder(env);
        Java_emitDecoder(env);
      }

      //if(hasDependencies() || isReferenced()) {
      //if( getType().isUserType() && isReferenced()) {
      if( isReferenced()) {
        Java_emitRegisterEncoder(env);
        Java_emitDispatcher(env, false);
      }
      Java_emitSignature(env);

Anders Nilsson's avatar
Anders Nilsson committed
360
      env.println("}");
361
362
      env.unindent();
      env.println();
Anders Nilsson's avatar
Anders Nilsson committed
363
364
  }

365

Anders Nilsson's avatar
Anders Nilsson committed
366
  public void SampleDecl.Java_emitClass(Java_env env, String pack) {
367
    Java_emitDeclPP(env);
Anders Nilsson's avatar
Anders Nilsson committed
368
369
370
371
372
373

    if (pack != null && pack.length() > 0) {
      env.println("package " + pack + ";");
    }

    env.println("import java.io.IOException;");
374
375
376
377
378
379
    env.println("import se.lth.control.labcomm2006.Constant;");
    env.println("import se.lth.control.labcomm2006.Decoder;");
    env.println("import se.lth.control.labcomm2006.SampleDispatcher;");
    env.println("import se.lth.control.labcomm2006.Encoder;");
    env.println("import se.lth.control.labcomm2006.SampleHandler;");
    env.println("import se.lth.control.labcomm2006.Sample;");
Anders Nilsson's avatar
Anders Nilsson committed
380
    env.println();
381
    env.print("public class " + getName());
Anders Blomdell's avatar
Anders Blomdell committed
382
    env.println(" implements Sample {");
Anders Nilsson's avatar
Anders Nilsson committed
383
384
385
    env.println();
    env.indent();
    getType().Java_emitInstance(env);
Anders Blomdell's avatar
Anders Blomdell committed
386
    env.println("public interface Handler extends SampleHandler {");
Anders Nilsson's avatar
Anders Nilsson committed
387
388
389
390
391
392
393
394
    env.print("  public void handle_" + getName() + "(");
    if (!isVoid()) {
      getType().Java_emitType(env);
      env.print(" value");
    }
    env.println(") throws Exception;");
    env.println("}");
    env.println();
395
    env.println("public static void register(Decoder d, Handler h) throws IOException {");
Anders Nilsson's avatar
Anders Nilsson committed
396
    env.indent();
397
    env.println("d.register(dispatcher, h);");
Anders Nilsson's avatar
Anders Nilsson committed
398
399
400
401
    env.unindent();
    env.println("}");
    env.println();

402
403
404
405
406
407
408

    Java_emitRegisterEncoder(env);
    Java_emitDispatcher(env, true);
    Java_emitEncoder(env);
    Java_emitDecoder(env);

    Java_emitSignature(env);
Anders Nilsson's avatar
Anders Nilsson committed
409
410
    env.unindent();
    env.println("}");
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
    env.println();
  }

  //public void TypeDecl.Java_emitSignature(Java_env env) {
  //  Signature signature = getSignature();
  //  signature.Java_emitSignature(env, true);
  //}

  public void Decl.Java_emitSignature(Java_env env) {
    //always emit the flat signature, as it is needed
    //for matching at the decoder side (which cannot know
    //the type_ids of dependent types. Therefore, flat sigs
    //are used for matching
    Java_emitFlatSignature(env);
    //if(isReferenced() || isSampleDecl()){
    //  Signature signature = getSignature();
    //  signature.Java_emitSignature(env, !isSampleDecl());
    //}
  }

  public void Decl.Java_emitFlatSignature(Java_env env){
    env.println("private static byte[] signature = new byte[] {");
      env.indent();
434
      SignatureList signature = flatSignature(2006);
435
436
437
438
439
      for (int i = 0 ; i < signature.size() ; i++) {
        String comment = signature.getComment(i);
        if (comment != null) {
          env.println(signature.getIndent(i) + "// " + comment);
        }
440
        byte[] data = signature.getData(i, 2006);
441
442
443
444
445
446
447
448
449
450
451
452
453
        if (data != null) {
          env.print(signature.getIndent(i));
          for (int j = 0 ; j < data.length ; j++) {
          env.print(data[j] + ", ");
        }
        env.println();
      }
    }
    env.unindent();
    env.println("};");
    env.unindent();
    env.println();
  }
Anders Nilsson's avatar
Anders Nilsson committed
454

455
456
  //XXX TODO: refactor: split into a static class ("TypeDefSingleton"?)and a (smaller) dispatcher
  public void Decl.Java_emitDispatcher(Java_env env, boolean isSample) {
457
    String genericStr = "";
458
    env.println("private static Dispatcher dispatcher = new Dispatcher();");
459
    env.println();
460
    env.println("public SampleDispatcher getDispatcher() {");
Anders Nilsson's avatar
Anders Nilsson committed
461
    env.indent();
462
    env.println("return dispatcher;");
463
464
465
    env.unindent();
    env.println("}");
    env.println();
466
467
468
    env.println("private static class Dispatcher implements SampleDispatcher "+genericStr+"{");
    env.indent();
    env.println();
469
    env.println("public Class"+genericStr+" getSampleClass() {");
Anders Nilsson's avatar
Anders Nilsson committed
470
471
472
473
    env.indent();
    env.println("return " + getName() + ".class;");
    env.unindent();
    env.println("}");
474
    env.println();
Anders Nilsson's avatar
Anders Nilsson committed
475
476
477
478
479
    env.println("public String getName() {");
    env.indent();
    env.println("return \"" + getName() + "\";");
    env.unindent();
    env.println("}");
480
481
482
    env.println();
    env.println("public byte getTypeDeclTag() {");
    env.indent();
483
484
    if(isSample) {
      env.println("return Constant.SAMPLE;");
485
    } else {
486
      env.println("return Constant.TYPEDEF;");
487
488
489
490
491
492
493
494
495
496
    }
    env.unindent();
    env.println("}");
    env.println();
    env.println("public boolean isSample() {");
    env.indent();
    env.println("return "+isSample+";");
    env.unindent();
    env.println("}");
    env.println();
497
    env.println("/** return the flat signature. */");
Anders Nilsson's avatar
Anders Nilsson committed
498
499
500
501
502
    env.println("public byte[] getSignature() {");
    env.indent();
    env.println("return signature;");
    env.unindent();
    env.println("}");
503
504
505
506
507
508
509
    env.println();
    env.println("public boolean canDecodeAndHandle() {");
    env.indent();
    env.println("return "+isSample+";");
    env.unindent();
    env.println("}");
    env.println();
Anders Blomdell's avatar
Anders Blomdell committed
510
511
    env.println("public void decodeAndHandle(Decoder d,");
    env.println("                            SampleHandler h) throws Exception {");
Anders Nilsson's avatar
Anders Nilsson committed
512
    env.indent();
513
514
515
516
517
518
519
    if( isSample) {
        if (isVoid()) {
          env.println(getName() + ".decode(d);");
          env.println("((Handler)h).handle_" + getName() + "();");
        } else {
          env.println("((Handler)h).handle_" + getName() + "(" + getName() + ".decode(d));");
        }
Anders Nilsson's avatar
Anders Nilsson committed
520
    } else {
521
        env.println("throw new Exception(\"A typedef has no handler, the corresponding method on the sample class should be called.\");");
Anders Nilsson's avatar
Anders Nilsson committed
522
523
524
525
526
527
528
529
    }
    env.unindent();
    env.println("}");
    env.println("");
    env.unindent();
    env.println("}");
    env.println("");

530
531
 }

Anders Nilsson's avatar
Anders Nilsson committed
532
533

  public void TypeDecl.Java_emitEncoder(Java_env env) {
Anders Blomdell's avatar
Anders Blomdell committed
534
    env.print("public static void encode(Encoder e");
Anders Nilsson's avatar
Anders Nilsson committed
535
536
537
538
539
540
541
542
543
544
545
546
547
548
    if (!isVoid()) {
      env.print(", ");
      getType().Java_emitType(env);
      env.print(" value");
    }
    env.println(") throws IOException {");
    env.indent();
    getType().Java_emitEncoder(env, "value");
    env.unindent();
    env.println("}");
    env.println();
  }

  public void SampleDecl.Java_emitEncoder(Java_env env) {
Anders Blomdell's avatar
Anders Blomdell committed
549
    env.print("public static void encode(Encoder e");
Anders Nilsson's avatar
Anders Nilsson committed
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
    if (!isVoid()) {
      env.print(", ");
      getType().Java_emitType(env);
      env.print(" value");
    }
    env.println(") throws IOException {");
    env.indent();
    env.println("e.begin(" + getName() + ".class);");
    getType().Java_emitEncoder(env, "value");
    env.println("e.end(" + getName() + ".class);");
    env.unindent();
    env.println("}");
    env.println();
  }

  public void Type.Java_emitEncoder(Java_env env, String name) {
566
567
    throw new Error(this.getClass().getName() +
		    ".Java_emitEncoder(Java_env env, String name)" +
Anders Nilsson's avatar
Anders Nilsson committed
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
		    " not declared");
  }

  public void VoidType.Java_emitEncoder(Java_env env, String name) {
  }

  public void PrimType.Java_emitEncoder(Java_env env, String name) {
    switch (getToken()) {
      case LABCOMM_BOOLEAN: { env.print("e.encodeBoolean"); } break;
      case LABCOMM_BYTE: { env.print("e.encodeByte"); } break;
      case LABCOMM_SHORT: { env.print("e.encodeShort"); } break;
      case LABCOMM_INT: { env.print("e.encodeInt"); } break;
      case LABCOMM_LONG: { env.print("e.encodeLong"); } break;
      case LABCOMM_FLOAT: { env.print("e.encodeFloat"); } break;
      case LABCOMM_DOUBLE: { env.print("e.encodeDouble"); } break;
      case LABCOMM_STRING: { env.print("e.encodeString"); } break;
    }
    env.println("(" + name + ");");
  }

  public void ArrayType.Java_emitEncoder(Java_env env, String name) {
    int baseDepth = env.getDepth();
    String prefix = "";
    for (int i = 0 ; i < getNumExp() ; i++) {
      String limit = getExp(i).Java_emitEncoder(env, name + prefix);
593
      env.print_block_begin();
Anders Nilsson's avatar
Anders Nilsson committed
594
595
596
597
598
599
600
601
602
603
      env.println("int i_" + (baseDepth + i) + "_max = " + limit + ";");
      prefix = prefix + "[0]";
    }
    for (int i = 0 ; i < getNumExp() ; i++) {
      String limit = "i_" + (baseDepth + i) + "_max";
      name = name + env.print_for_begin(limit);
    }
    getType().Java_emitEncoder(env, name);
    for (int i = 0 ; i < getNumExp() ; i++) {
      env.print_for_end();
604
      env.print_block_end();
Anders Nilsson's avatar
Anders Nilsson committed
605
606
    }
  }
607

Anders Nilsson's avatar
Anders Nilsson committed
608
  public String Exp.Java_emitEncoder(Java_env env, String name) {
609
610
    throw new Error(this.getClass().getName() +
		    ".Java_emitEncoder(Java_env env, String name)" +
Anders Nilsson's avatar
Anders Nilsson committed
611
612
613
614
615
616
617
618
		    " not declared");
  }

  public String IntegerLiteral.Java_emitEncoder(Java_env env, String name) {
    return getValue();
  }

  public String VariableSize.Java_emitEncoder(Java_env env, String name) {
619
    env.println("e.encodeInt(" + name + ".length);");
Anders Nilsson's avatar
Anders Nilsson committed
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
    return name + ".length";
  }

  public void StructType.Java_emitEncoder(Java_env env, String name) {
    for (int i = 0 ; i < getNumField() ; i++) {
      Field f = getField(i);
      f.getType().Java_emitEncoder(env, name + "." + f.getName());
    }
  }

  public void UserType.Java_emitEncoder(Java_env env, String name) {
    if (Java_needInstance()) {
      env.println(getName() + ".encode(e, " + name + ");");
    } else {
      decl().getType().Java_emitEncoder(env, name);
    }
  }

  public void Decl.Java_emitDecoder(Java_env env) {
    env.print("public static ");
    getType().Java_emitType(env);
Anders Blomdell's avatar
Anders Blomdell committed
641
    env.println(" decode(Decoder d) throws IOException {");
Anders Nilsson's avatar
Anders Nilsson committed
642
643
644
645
646
647
648
649
650
651
652
653
654
    env.indent();
    if (!isVoid()) {
      getType().Java_emitType(env);
      env.println(" result;");
      getType().Java_emitDecoder(env, "result");
      env.println("return result;");
    }
    env.unindent();
    env.println("}");
    env.println();
  }

  public void Type.Java_emitDecoder(Java_env env, String name) {
655
656
    throw new Error(this.getClass().getName() +
		    ".Java_emitDecoder(Java_env env, String name)" +
Anders Nilsson's avatar
Anders Nilsson committed
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
		    " not declared");
  }

  public void VoidType.Java_emitDecoder(Java_env env, String name) {
  }

  public void PrimType.Java_emitDecoder(Java_env env, String name) {
    env.print(name + " = ");
    switch (getToken()) {
      case LABCOMM_BOOLEAN: { env.println("d.decodeBoolean();"); } break;
      case LABCOMM_BYTE: { env.println("d.decodeByte();"); } break;
      case LABCOMM_SHORT: { env.println("d.decodeShort();"); } break;
      case LABCOMM_INT: { env.println("d.decodeInt();"); } break;
      case LABCOMM_LONG: { env.println("d.decodeLong();"); } break;
      case LABCOMM_FLOAT: { env.println("d.decodeFloat();"); } break;
      case LABCOMM_DOUBLE: { env.println("d.decodeDouble();"); } break;
      case LABCOMM_STRING: { env.println("d.decodeString();"); } break;
    }
  }

  public void ArrayType.Java_emitDecoder(Java_env env, String name) {
    env.println("{");
    env.indent();
    int baseDepth = env.getDepth();
    for (int i = 0 ; i < getNumExp() ; i++) {
      env.print("int i_" + (baseDepth + i) + "_max = ");
      getExp(i).Java_emitDecoder(env);
      env.println(";");
    }
    for (int i = 0 ; i < getNumExp() ; i++) {
      String limit = "i_" + (baseDepth + i) + "_max";
688
      env.print(name + " = ");
Anders Nilsson's avatar
Anders Nilsson committed
689
690
691
692
693
694
695
696
697
698
699
700
701
      Java_emitNew(env, limit, getNumExp() - i);
      env.println(";");
      name = name + env.print_for_begin(limit);
    }
    getType().Java_emitDecoder(env, name);
    for (int i = 0 ; i < getNumExp() ; i++) {
      env.print_for_end();
    }
    env.unindent();
    env.println("}");
  }

  public void Exp.Java_emitDecoder(Java_env env) {
702
703
    throw new Error(this.getClass().getName() +
		    ".Java_emitDecoder(Java_env env)" +
Anders Nilsson's avatar
Anders Nilsson committed
704
705
706
707
708
709
710
711
		    " not declared");
  }

  public void IntegerLiteral.Java_emitDecoder(Java_env env) {
    env.print(getValue());
  }

  public void VariableSize.Java_emitDecoder(Java_env env) {
712
    env.print("d.decodeInt()");
Anders Nilsson's avatar
Anders Nilsson committed
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
  }

  public void StructType.Java_emitDecoder(Java_env env, String name) {
    env.print(name + " = new ");
    Java_emitType(env);
    env.println("();");
    for (int i = 0 ; i < getNumField() ; i++) {
      Field f = getField(i);
      f.getType().Java_emitDecoder(env, name + "." + f.getName());
    }
  }

  public void UserType.Java_emitDecoder(Java_env env, String name) {
    if (Java_needInstance()) {
      env.println(name + " = " + getName() + ".decode(d);");
    } else {
      decl().getType().Java_emitDecoder(env, name);
    }
  }

  public void Type.Java_emitNew(Java_env env, String size) {
734
735
    throw new Error(this.getClass().getName() +
		    ".Java_emitNew(Java_env env, String size)" +
Anders Nilsson's avatar
Anders Nilsson committed
736
737
738
739
740
741
742
743
744
745
746
747
748
749
		    " not declared");
  }

  public void ArrayType.Java_emitNew(Java_env env, String size, int depth) {
    env.print("new ");
    getType().Java_emitTypePrefix(env);
    env.print("[" + size + "]");
    getType().Java_emitTypeSuffix(env);
    for (int i = 1 ; i < depth ; i++) {
      env.print("[]");
    }
  }

  public void Type.Java_emitTypePrefix(Java_env env) {
750
751
    throw new Error(this.getClass().getName() +
		    ".Java_emitTypePrefix(Java_env env)" +
Anders Nilsson's avatar
Anders Nilsson committed
752
753
754
755
756
757
		    " not declared");
  }

  public void PrimType.Java_emitTypePrefix(Java_env env) {
    switch (getToken()) {
      case LABCOMM_STRING: { env.print("String"); } break;
Anders Blomdell's avatar
Anders Blomdell committed
758
      case LABCOMM_SAMPLE: { env.print("Class"); } break;
Anders Nilsson's avatar
Anders Nilsson committed
759
760
761
762
763
764
765
766
767
      default: { env.print(getName()); } break;
    }
  }

  public void UserType.Java_emitTypePrefix(Java_env env) {
    if (Java_needInstance()) {
      env.print(getName());
    } else {
      decl().getType().Java_emitTypePrefix(env);
768
    }
Anders Nilsson's avatar
Anders Nilsson committed
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
  }

  public void ArrayType.Java_emitTypePrefix(Java_env env){
    getType().Java_emitTypePrefix(env);
  }

  public void StructType.Java_emitTypePrefix(Java_env env){
    env.print(Java_structName());
  }

  public void Type.Java_emitTypeSuffix(Java_env env) {
  }

  public void UserType.Java_emitTypeSuffix(Java_env env) {
    if (! Java_needInstance()) {
      decl().getType().Java_emitTypeSuffix(env);
785
    }
Anders Nilsson's avatar
Anders Nilsson committed
786
787
788
789
790
791
792
793
794
795
  }

  public void ArrayType.Java_emitTypeSuffix(Java_env env){
    getType().Java_emitTypeSuffix(env);
    for (int i = 0 ; i < getNumExp() ; i++) {
      env.print("[]");
    }
  }

  public boolean Type.Java_needInstance() {
796
797
    throw new Error(this.getClass().getName() +
		    ".Java_needInstance()" +
Anders Nilsson's avatar
Anders Nilsson committed
798
799
800
		    " not declared");
  }

801
802
803
804
  public boolean VoidType.Java_needInstance() {
    return false;
  }

Anders Nilsson's avatar
Anders Nilsson committed
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
  public boolean PrimType.Java_needInstance() {
    return false;
  }

  public boolean UserType.Java_needInstance() {
    return decl().getType().Java_needInstance();
  }

  public boolean StructType.Java_needInstance() {
    return true;
  }

  public boolean ArrayType.Java_needInstance() {
    return getType().Java_needInstance();
  }

  public boolean Type.Java_isPrimitive() {
    return false;
  }

  public boolean PrimType.Java_isPrimitive() {
    return true;
  }

  public void Type.Java_emitInstance(Java_env env) {
830
831
    throw new Error(this.getClass().getName() +
		    ".Java_emitInstance(Java_env env)" +
Anders Nilsson's avatar
Anders Nilsson committed
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
		    " not declared");
  }

  public void VoidType.Java_emitInstance(Java_env env) {
  }

  public void PrimType.Java_emitInstance(Java_env env) {
  }

  public void ArrayType.Java_emitInstance(Java_env env) {
    getType().Java_emitInstance(env);
  }

  public void StructType.Java_emitInstance(Java_env env) {
    if (Java_Depth() > 0) {
      env.println("public static class " + Java_structName() + " {");
      env.indent();
    }
    for (int i = 0 ; i < getNumField() ; i++) {
      getField(i).getType().Java_emitInstance(env);
    }
    for (int i = 0 ; i < getNumField() ; i++) {
      getField(i).Java_emitField(env);
    }
    if (Java_Depth() > 0) {
      env.unindent();
      env.println("}");
    }
    env.println();
  }

  public void UserType.Java_emitInstance(Java_env env) {
  }

  public void Field.Java_emitField(Java_env env) {
    env.print("public ");
    getType().Java_emitType(env);
869
    env.println(" " + getName() + ";");
Anders Nilsson's avatar
Anders Nilsson committed
870
871
872
  }

  public void Type.Java_emitType(Java_env env) {
873
874
    throw new Error(this.getClass().getName() +
		    ".Java_emitType(Java_env env)" +
Anders Nilsson's avatar
Anders Nilsson committed
875
876
877
878
879
880
881
882
883
884
		    " not declared");
  }

  public void VoidType.Java_emitType(Java_env env) {
    env.print("void");
  }

  public void PrimType.Java_emitType(Java_env env) {
    switch (getToken()) {
      case LABCOMM_STRING: { env.print("String"); } break;
Anders Blomdell's avatar
Anders Blomdell committed
885
      case LABCOMM_SAMPLE: { env.print("Class"); } break;
Anders Nilsson's avatar
Anders Nilsson committed
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
      default: { env.print(getName()); } break;
    }
  }

  public void UserType.Java_emitType(Java_env env) {
    decl().getType().Java_emitType(env);
  }

  public void ArrayType.Java_emitType(Java_env env){
    getType().Java_emitType(env);
    for (int i = 0 ; i < getNumExp() ; i++) {
      env.print("[]");
    }
  }

  public void StructType.Java_emitType(Java_env env){
    env.print(Java_structName());
  }
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
}

aspect Java_Signature {
    public void Signature.Java_emitSignature(Java_env env, boolean decl){
      SignatureList sl = getSignatureList();
      sl.Java_emitSignature(env, decl);
    }

//    public void Signature.Java_emitHierarchicalSignature(Java_env env, boolean decl){
//      SignatureList sl = getSignatureList();
//      sl.Java_emitSignature(env, decl);
//    }
//
    public abstract void SignatureLine.Java_emitSignature(Java_env env, boolean decl);

    public void TypeRefSignatureLine.Java_emitSignature(Java_env env, boolean isDecl){
      env.print(getIndentString());
921
      env.println("e.encodeInt(e.getTypeId("+decl.getName()+".class));");
922
923
924
    }

    public void DataSignatureLine.Java_emitSignature(Java_env env, boolean decl){
925
        byte[] data = getData(2006);
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
          if (data != null) {
              env.print(getIndentString());
              for (int j = 0 ; j < data.length ; j++) {
                  //env.print("e.encodeByte((byte)"+data[j]+");");
                  env.print("e.encodeByte((byte)"+ String.format("0x%02X ", data[j]) +"); ");
              }
              env.println();
          }
  }
    public void SignatureList.Java_emitSignature(Java_env env, boolean decl) {
      env.println("private static void emitSignature(Encoder e) throws IOException{");
      env.indent();
      for (int i = 0 ; i < size() ; i++) {
        String comment = getComment(i);
        if (comment != null && comment.length() > 0) {
            env.println(getIndent(i) + "// " + comment);
        }
        SignatureLine l = getSignatureLine(i);
        l.Java_emitSignature(env, decl);
      }
      env.println("}");
      env.unindent();
  }
Anders Nilsson's avatar
Anders Nilsson committed
949
950
951
952
953

}

aspect Java_Info {

954
955
  public void Program.Java_info(PrintStream out) {
    Java_env env = new Java_env(out);
Anders Nilsson's avatar
Anders Nilsson committed
956
957
958
959
960
961
    for (int i = 0; i < getNumDecl(); i++) {
      getDecl(i).Java_info(env);
    }
  }

  public void Decl.Java_info(Java_env env) {
962
963
    throw new Error(this.getClass().getName() +
		    ".Java_info(Java_env env)" +
Anders Nilsson's avatar
Anders Nilsson committed
964
965
966
967
		    " not declared");
  }

  public void TypeDecl.Java_info(Java_env env) {
Anders Blomdell's avatar
Anders Blomdell committed
968
    env.print(",Java,typedef," + getName() + ",");
969
    getType().Java_emitType(env);
970
    env.print(",not_applicable_for_Java");
Anders Nilsson's avatar
Anders Nilsson committed
971
972
973
974
    env.println();
  }

  public void SampleDecl.Java_info(Java_env env) {
Anders Blomdell's avatar
Anders Blomdell committed
975
    env.print(",Java,sample," + getName() + ",");
Anders Nilsson's avatar
Anders Nilsson committed
976
    getType().Java_emitType(env);
977
    env.print(",not_applicable_for_Java");
Anders Nilsson's avatar
Anders Nilsson committed
978
979
980
981
    env.println();
  }

}