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[mjc2wsl.git] / mjc2wsl.java
1 package com.quemaster.transformations.mjc2wsl;
2 /*
3 Copyright (C) 2014,2015, 2016, 2018 Doni Pracner
4
5 This file is part of mjc2wsl.
6
7 mjc2wsl is free software: you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation, either version 3 of the License, or
10 (at your option) any later version.
11
12 mjc2wsl is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with mjc2wsl. If not, see <http://www.gnu.org/licenses/>.
19 */
20 import java.io.File;
21 import java.io.FileInputStream;
22 import java.io.IOException;
23 import java.io.InputStream;
24 import java.io.PrintWriter;
25 import java.nio.file.FileSystems;
26 import java.nio.file.Files;
27 import java.nio.file.Path;
28 import java.util.Calendar;
29 import java.util.Properties;
30
31 import com.quemaster.transformations.TransMessages;
32
33 /**
34 * This program converts file from compiled MicroJava bytecode to WSL language
35 * which is a part of the FermaT Transformation system. MicroJava is a subset
36 * used in Compiler Construction courses by Hanspeter Moessenboeck, not
37 * "Java ME".
38 *
39 * @author Doni Pracner, http://perun.dmi.rs/pracner http://quemaster.com
40 */
41 public class mjc2wsl{
42 //default version name, used if the file is not found
43 private static String versionN = "v0.2.x";
44
45 private String versionFile = "version.properties";
46
47 private TransMessages messages = new TransMessages();
48
49 private boolean genPauseAfterEachAddress=false,
50 genPrintForEachAddress = false,
51 genPrintEStackOnChange = false;
52
53 private boolean genPopPush=false;
54
55 private boolean genInlinePrint = false;
56
57 private boolean genLocalVars = true;
58
59 // make an array for all local variables OTHERWISE make them separate
60 private boolean genLocalsAsArray = true;
61
62 /** Constant used for marking a regular comment from the original file */
63 public static final char C_REG = ' ';
64 /**
65 * Constant used for marking when original code is inserted in the file,
66 * next to the translations
67 */
68 public static final char C_OC = '#';
69 /** Constant used for marking special messages from the translator */
70 public static final char C_SPEC = '&';
71 /** Constant used for marking error messages from the translator */
72 public static final char C_ERR = '!';
73
74 /** instruction code in MicroJava bytecode. */
75 public static final int
76 load = 1,
77 load_0 = 2,
78 load_1 = 3,
79 load_2 = 4,
80 load_3 = 5,
81 store = 6,
82 store_0 = 7,
83 store_1 = 8,
84 store_2 = 9,
85 store_3 = 10,
86 getstatic = 11,
87 putstatic = 12,
88 getfield = 13,
89 putfield = 14,
90 const_0 = 15,
91 const_1 = 16,
92 const_2 = 17,
93 const_3 = 18,
94 const_4 = 19,
95 const_5 = 20,
96 const_m1 = 21,
97 const_ = 22,
98 add = 23,
99 sub = 24,
100 mul = 25,
101 div = 26,
102 rem = 27,
103 neg = 28,
104 shl = 29,
105 shr = 30,
106 inc = 31,
107 new_ = 32,
108 newarray = 33,
109 aload = 34,
110 astore = 35,
111 baload = 36,
112 bastore = 37,
113 arraylength = 38,
114 pop = 39,
115 dup = 40,
116 dup2 = 41,
117 jmp = 42,
118 jeq = 43,
119 jne = 44,
120 jlt = 45,
121 jle = 46,
122 jgt = 47,
123 jge = 48,
124 call = 49,
125 return_ = 50,
126 enter = 51,
127 exit = 52,
128 read = 53,
129 print = 54,
130 bread = 55,
131 bprint = 56,
132 trap = 57;
133
134 private boolean originalInComments = false;
135
136 private Properties versionData;
137
138 private String getVersion() {
139 if (versionData == null) {
140 versionData = new Properties();
141 try {
142 versionData.load(getClass().getResourceAsStream(versionFile));
143 } catch (IOException | NullPointerException e) {
144 // it doesn't matter
145 //e.printStackTrace();
146 }
147 }
148 String ver = versionData.getProperty("version");
149 if (ver != null)
150 return ver;
151 else
152 return versionN;
153 }
154
155 private MicroJavaInput mjInput;
156
157 private PrintWriter out = null;
158
159
160 private void pr(int i){
161 out.print(i);
162 }
163
164 private void pr(char i){
165 out.print(i);
166 }
167
168 private void pr(String i){
169 out.print(i);
170 }
171
172 private void prl(String i){
173 out.println(i);
174 }
175
176 public String createStandardStart(){
177 return createStandardStart(10);
178 }
179
180 public String createStandardStart(int numWords){
181 StringBuilder ret = new StringBuilder(
182 "C:\" This file was automatically converted from microjava bytecode\n"
183 +" using mjc2wsl "+getVersion()+"\n");
184
185 ret.append(" -options:");
186 ret.append("\n localsAsArrays:"+genLocalsAsArray);
187 ret.append("\n localVarBlocks:"+genLocalVars);
188 ret.append("\n popPush:"+genPopPush);
189 ret.append("\n inlinePrint:"+genInlinePrint);
190 ret.append("\n\";\n");
191
192 ret.append("\nBEGIN");
193 ret.append("\nVAR <\n\t");
194 if (!genLocalVars){
195 ret.append("\n\ttempa := 0, tempb :=0, tempres := 0,");
196 } else
197 ret.append("\n\tmjvm_flag_jump := 0,");
198
199 if (genLocalsAsArray)
200 ret.append("mjvm_locals := ARRAY(1,0),");
201
202 ret.append("\n\tmjvm_statics := ARRAY("+numWords+",0),");
203 ret.append("\n\tmjvm_arrays := < >,");
204 ret.append("\n\tmjvm_objects := < >,");
205 ret.append("\n\tmjvm_estack := < >, mjvm_mstack := < > > :");
206
207 return ret.toString();
208 }
209
210 public String createAsciiString(){
211 StringBuilder ret = new StringBuilder("C:\"char array for ascii code conversions\";");
212 ret.append("\nascii := \"????????????????????????????????\"++\n");
213 ret.append("\" !\"++Quote++\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~\";\n");
214
215 return ret.toString();
216 }
217
218 public String createStandardEnd(){
219 StringBuilder ret = new StringBuilder("SKIP\nENDVAR\n");
220 ret.append("\nWHERE\n");
221
222 ret.append("\nFUNCT CHR(num) ==:\n");
223 ret.append("\t(@List_To_String(< num >))\n");
224 ret.append("END\n");
225
226 if (!genInlinePrint) {
227 ret.append("\nPROC Print_MJ(val, format VAR)==\n");
228 ret.append("PRINFLUSH(@Format(format, val ))");
229 ret.append("\nEND\n");
230
231 ret.append("\nPROC Print_MJ_CHAR(val, format VAR)==\n");
232 ret.append("PRINFLUSH(@Format(format, CHR(val)))");
233 ret.append("\nEND\n");
234 }
235
236 ret.append("\nEND");
237 return ret.toString();
238 }
239
240 private String createStartVar(String... vars){
241 if (genLocalVars) {
242 StringBuilder ret = new StringBuilder("VAR < ");
243 ret.append(vars[0] + " := 0");
244 for (int i = 1; i < vars.length; i++)
245 ret.append(", " + vars[i] + " := 0");
246 ret.append(" > : ");
247
248 return ret.toString();
249 }
250 return "";
251 }
252
253 private String createEndVar(){
254 if (genLocalVars)
255 return "ENDVAR;";
256 else
257 return "";
258 }
259
260 private String createLocal(int i) {
261 // arrays start at 1 in WSL, so we need an offset
262 if (genLocalsAsArray)
263 return "mjvm_locals[" + (i + 1) + "]";
264 else
265 return "mjvm_locals_" + i;
266 }
267
268 private String createStatic(int i) {
269 return "mjvm_statics[" + (i + 1) + "]";
270 }
271
272 private String createArray(int i) {
273 return "mjvm_arrays[" + i + "]";
274 }
275
276 private String createArray(String i) {
277 return "mjvm_arrays[" + i + "]";
278 }
279
280 private String createObject(String i) {
281 return "mjvm_objects[" + i + "]";
282 }
283
284 /**
285 * Creates a WSL comment with care to quote chars.
286 */
287 public static String createComment(String str){
288 return createComment(str, C_REG);
289 }
290
291 /**
292 * Creates a WSL comment with care to quote chars, of the
293 * given type. Types are given as char constants. They can be
294 * default comments, comments that contain the original code
295 * in them, or additional comments regarding the translation
296 * process.
297 */
298 public static String createComment(String str, char type) {
299 return "C:\"" + type + str.replace("\"", "''") + "\";";
300 }
301
302 // generalised stack operations
303
304 private String createToStack(String stack, String var){
305 if (genPopPush)
306 return "PUSH("+stack+"," + var + ");";
307 else
308 return stack + " := <" + var + " > ++ " + stack +";";
309 }
310
311 private String createFromStack(String stack, String var){
312 if (genPopPush)
313 return "POP("+ var + ", "+stack+");";
314 else
315 return var + ":= HEAD("+stack+"); "+stack+" := TAIL("+stack+");";
316 }
317 //Expression stack
318
319 private String createToEStack(int i) {
320 return createToEStack(i+"");
321 }
322
323 private String createToEStack(String i) {
324 String res = createToStack("mjvm_estack", i);
325 if (genPrintEStackOnChange)
326 res += "PRINT(\"eStack\",mjvm_estack);";
327 return res;
328 }
329
330 private String createFromEStack(String st) {
331 String res = createFromStack("mjvm_estack",st);
332 if (genPrintEStackOnChange)
333 res += "PRINT(\"eStack\",mjvm_estack);";
334 return res;
335 }
336
337 private String createPopEStack() {
338 String res = "mjvm_estack := TAIL(mjvm_estack);";
339 if (genPrintEStackOnChange)
340 res += "PRINT(\"eStack\",mjvm_estack);";
341 return res;
342 }
343
344 private String createTopTwoEStack() {
345 return createFromEStack("tempa") + "\n" + createFromEStack("tempb");
346 }
347
348 private String createTopEStack() {
349 return createFromEStack("tempa");
350 }
351
352 //Method stack
353
354 private String createToMStack(int i) {
355 return createToMStack(i+"");
356 }
357
358 private String createToMStack(String i) {
359 return createToStack("mjvm_mstack", i);
360 }
361
362 private String createFromMStack(String st) {
363 return createFromStack("mjvm_mstack", st);
364 }
365
366 public void convertStream(InputStream ins) throws Exception{
367 mjInput = new MicroJavaInput(ins);
368
369 prl(createStandardStart(mjInput.getNumberOfWords()));
370 prl("SKIP;\n ACTIONS a" + (14 + mjInput.getMainAdr()) + " :");
371
372 // the number of Locals for procedures; need to remember it for exits
373 int numberOfLocals = 0;
374
375 int op = mjInput.get();
376 while (op >= 0) {
377 prl(" a" + mjInput.getCounter() + " ==");
378 if (originalInComments)
379 prl(createComment(mjInput.describeOpCode(op), C_OC));
380 if (genPrintForEachAddress) {
381 prl("PRINT(\"a" + mjInput.getCounter() + "\");");
382 if (genPauseAfterEachAddress)
383 prl("@Read_Line_Proc(VAR debug_disposable_string, Standard_Input_Port);");
384 }
385 switch (op) {
386 case load: {
387 prl(createToEStack(createLocal(mjInput.get())));
388 break;
389 }
390 case load_0:
391 case load_1:
392 case load_2:
393 case load_3: {
394 prl(createStartVar("tempa"));
395 prl("tempa :="+createLocal(op - load_0)+";");
396 prl(createToEStack("tempa"));
397 prl(createEndVar());
398 break;
399 }
400 case store: {
401 prl(createFromEStack(createLocal(mjInput.get())));
402 break;
403 }
404 case store_0:
405 case store_1:
406 case store_2:
407 case store_3: {
408 prl(createStartVar("tempa"));
409 prl(createFromEStack("tempa"));
410 prl(createLocal(op - store_0)+" := tempa;");
411 prl(createEndVar());
412 break;
413 }
414
415 case getstatic: {
416 prl(createToEStack(createStatic(mjInput.get2())));
417 break;
418 }
419 case putstatic: {
420 prl(createFromEStack(createStatic(mjInput.get2())));
421 break;
422 }
423
424 case getfield: {
425 int f = mjInput.get2();
426 prl(createStartVar("tempa"));
427 prl(createTopEStack());
428 prl(createToEStack(createObject("tempa") + "[" + (f + 1) + "]"));
429 prl(createEndVar());
430 break;
431 }
432 case putfield: {
433 int f = mjInput.get2();
434 prl(createStartVar("tempa", "tempb"));
435 prl(createTopTwoEStack());
436 prl(createObject("tempb") + "[" + (f + 1) + "]:=tempa;");
437 prl(createEndVar());
438 break;
439 }
440
441 case const_: {
442 prl(createToEStack(mjInput.get4()));
443 break;
444 }
445
446 case const_m1: {
447 prl(createToEStack(-1));
448 break;
449 }
450
451 case const_0:
452 case const_1:
453 case const_2:
454 case const_3:
455 case const_4:
456 case const_5: {
457 prl(createToEStack(op - const_0));
458 break;
459 }
460
461 case add: {
462 prl(createStartVar("tempa", "tempb", "tempres"));
463 prl(createTopTwoEStack());
464 prl("tempres := tempb + tempa;");
465 prl(createToEStack("tempres"));
466 prl(createEndVar());
467 break;
468 }
469 case sub: {
470 prl(createStartVar("tempa", "tempb", "tempres"));
471 prl(createTopTwoEStack());
472 prl("tempres := tempb - tempa;");
473 prl(createToEStack("tempres"));
474 prl(createEndVar());
475 break;
476 }
477 case mul: {
478 prl(createStartVar("tempa", "tempb", "tempres"));
479 prl(createTopTwoEStack());
480 prl("tempres := tempb * tempa;");
481 prl(createToEStack("tempres"));
482 prl(createEndVar());
483 break;
484 }
485 case div: {
486 prl(createStartVar("tempa", "tempb", "tempres"));
487 prl(createTopTwoEStack());
488 prl("IF tempa = 0 THEN ERROR(\"division by zero\") FI;");
489 prl("tempres := tempb DIV tempa;");
490 prl(createToEStack("tempres"));
491 prl(createEndVar());
492 break;
493 }
494 case rem: {
495 prl(createStartVar("tempa", "tempb", "tempres"));
496 prl(createTopTwoEStack());
497 prl("IF tempa = 0 THEN ERROR(\"division by zero\") FI;");
498 prl("tempres := tempb MOD tempa;");
499 prl(createToEStack("tempres"));
500 prl(createEndVar());
501 break;
502 }
503
504 case neg: {
505 prl(createStartVar("tempa"));
506 prl(createTopEStack());
507 prl(createToEStack("-tempa"));
508 prl(createEndVar());
509 break;
510 }
511
512 case shl: {
513 prl(createStartVar("tempa", "tempb"));
514 prl(createTopTwoEStack());
515 prl("VAR <tempres :=tempb, i:=1 >:");
516 prl("\tFOR i:=1 TO tempa STEP 1 DO tempres := tempres * 2 OD;");
517 prl(createToEStack("tempres"));
518 prl("ENDVAR;");
519 prl(createEndVar());
520 break;
521 }
522 case shr: {
523 prl(createStartVar("tempa", "tempb"));
524 prl(createTopTwoEStack());
525 prl("VAR <tempres :=tempb, i:=1 >:");
526 prl("\tFOR i:=1 TO tempa STEP 1 DO tempres := tempres DIV 2 OD;");
527 prl(createToEStack("tempres"));
528 prl("ENDVAR;");
529 prl(createEndVar());
530 break;
531 }
532
533 case inc: {
534 int b1 = mjInput.get(), b2 = mjInput.get();
535 prl(createLocal(b1) + " := " + createLocal(b1) + " + " + b2 + ";");
536 break;
537 }
538
539 case new_: {
540 int size = mjInput.get2();
541 // TODO maybe objects and arrays should be in the same list?
542 prl("mjvm_objects := mjvm_objects ++ < ARRAY(" + size
543 + ",0) >;");
544 prl(createToEStack("LENGTH(mjvm_objects)"));
545 break;
546 }
547 case newarray: {
548 mjInput.get();// 0 - bytes, 1 - words; ignore for now
549 // TODO take into consideration 0/1
550 prl(createStartVar("tempa"));
551 prl(createTopEStack());
552 prl("mjvm_arrays := mjvm_arrays ++ < ARRAY(tempa,0) >;");
553 prl(createToEStack("LENGTH(mjvm_arrays)"));
554 prl(createEndVar());
555 break;
556 }
557
558 case aload:
559 case baload: {
560 prl(createStartVar("tempa", "tempb"));
561 prl(createTopTwoEStack());
562 prl(createToEStack(createArray("tempb") + "[tempa+1]"));
563 prl(createEndVar());
564 break;
565 }
566 case astore:
567 case bastore: {
568 prl(createStartVar("tempa", "tempb", "tempres"));
569 prl(createFromEStack("tempres"));
570 prl(createTopTwoEStack());
571 prl("mjvm_arrays[tempb][tempa+1]:=tempres;");
572 prl(createEndVar());
573 break;
574 }
575 case arraylength: {
576 prl(createStartVar("tempa", "tempb"));
577 prl(createTopEStack());
578 prl("tempb := LENGTH("+ createArray("tempa") + ");");
579 prl(createToEStack("tempb"));
580 prl(createEndVar());
581 break;
582 }
583
584 case dup: {
585 prl(createStartVar("tempa", "tempb"));
586 prl(createTopEStack());
587 prl(createToEStack("tempa"));
588 prl(createToEStack("tempa"));
589 prl(createEndVar());
590 break;
591 }
592 case dup2: {
593 prl(createStartVar("tempa", "tempb"));
594 prl(createTopTwoEStack());
595 prl(createToEStack("tempb"));
596 prl(createToEStack("tempa"));
597 prl(createToEStack("tempb"));
598 prl(createToEStack("tempa"));
599 prl(createEndVar());
600 break;
601 }
602
603 case pop: {
604 prl(createPopEStack());
605 break;
606 }
607
608 case jmp: {
609 prl("CALL a" + (mjInput.getCounter() + mjInput.get2()) + ";");
610 break;
611 }
612
613 case jeq:
614 case jne:
615 case jlt:
616 case jle:
617 case jgt:
618 case jge: {
619 if (genLocalVars) {
620 prl(createStartVar("tempa", "tempb"));
621 prl(createTopTwoEStack());
622 prl("IF tempb " + mjInput.getRelationFor(op)
623 + " tempa THEN mjvm_flag_jump := 1"
624 + " ELSE mjvm_flag_jump := 0"
625 + " FI;");
626 prl(createEndVar());
627 prl("IF mjvm_flag_jump = 1 THEN CALL a"
628 + (mjInput.getCounter() + mjInput.get2())
629 + " ELSE CALL a" + (mjInput.getCounter() + 1)
630 + " FI;");
631 } else {
632 prl(createTopTwoEStack());
633 prl("IF tempb " + mjInput.getRelationFor(op)
634 + " tempa THEN CALL a"
635 + (mjInput.getCounter() + mjInput.get2())
636 + " ELSE CALL a" + (mjInput.getCounter() + 1)
637 + " FI;");
638 }
639 break;
640 }
641
642 case call: {
643 prl("CALL a" + (mjInput.getCounter() + mjInput.get2()) + ";");
644 break;
645 }
646
647 case return_: {
648 // we let the actions return
649 // there is nothing to clean up
650 prl("SKIP\n END\n b" + mjInput.getCounter() + " ==");
651 break;
652 }
653 case enter: {
654 int parameters = mjInput.get();
655
656 numberOfLocals = mjInput.get();
657 if (genLocalsAsArray) {
658 prl(createToMStack("mjvm_locals"));
659 prl("mjvm_locals := ARRAY(" + numberOfLocals + ",0);");
660 } else {
661 // TODO maybe we should generate VAR block for these somewhere
662 for (int i = 0; i < numberOfLocals; i++) {
663 prl(createToMStack(createLocal(i)));
664 }
665 }
666
667 for (int i = parameters - 1; i >= 0; i--)
668 prl(createFromEStack(createLocal(i)));
669 break;
670 }
671 case exit: {
672 if (genLocalsAsArray) {
673 prl(createFromMStack("mjvm_locals"));
674 } else {
675 // there are as many locals as defined in the last enter
676 for (int i = numberOfLocals -1; i >= 0; i--)
677 prl(createFromMStack(createLocal(i)));
678 }
679 break;
680 }
681
682 // read, print
683 case bread: {
684 // TODO maybe we'll need a buffer for multi chars!
685 prl(createStartVar("tempa"));
686 prl("@Read_Line_Proc(VAR tempa, Standard_Input_Port);");
687 prl("tempa := @String_To_List(tempa)[1];");
688 prl(createToEStack("tempa"));
689 prl(createEndVar());
690 break;
691 }
692 case read: {
693 prl(createStartVar("tempa"));
694 prl("@Read_Line_Proc(VAR tempa, Standard_Input_Port);");
695 prl("tempa := @String_To_Num(tempa);");
696 prl(createToEStack("tempa"));
697 prl(createEndVar());
698 break;
699 }
700
701 // the prints
702 case bprint: {
703 prl(createStartVar("tempa", "tempb"));
704 prl(createTopTwoEStack());
705 if (genInlinePrint){
706 prl(createComment("print spacing and transformation",C_SPEC));
707 prl("PRINFLUSH(@Format(tempa, @List_To_String(< tempb >)));");
708 } else
709 prl("Print_MJ_CHAR(tempb,tempa);");
710 prl(createEndVar());
711 break;
712 }
713 case print: {
714 prl(createStartVar("tempa", "tempb"));
715
716 prl(createTopTwoEStack());
717 if (genInlinePrint){
718 prl(createComment("print spacing",C_SPEC));
719 prl("PRINFLUSH(@Format(tempa,tempb));");
720 }
721 else
722 prl("Print_MJ(tempb,tempa);");
723 prl(createEndVar());
724 break;
725 }
726
727 case trap: {
728 prl("ERROR(\"Runtime error: trap(" + mjInput.get() + ")\");");
729 break;
730 }
731
732 default:
733 prl(createComment("unknown op error: " + op, C_ERR));
734 messages.message("unknown op error: " + op, TransMessages.M_ERR);
735 break;
736 }
737
738 boolean wasJump = mjInput.isJumpCode(op);
739 op = mjInput.get();
740 if (op >= 0)
741 if (wasJump)
742 prl("SKIP\n END");
743 else
744 prl("CALL a" + mjInput.getCounter() + "\n END");
745 }
746 prl("SKIP\n END\nENDACTIONS;\n");
747 pr(createStandardEnd());
748 }
749
750 public void convertFile(File f) {
751 try {
752 convertStream(new FileInputStream(f));
753 } catch (Exception ex) {
754 ex.printStackTrace();
755 }
756 }
757
758 public void printHelp() {
759 printVersion();
760 printUsage();
761 printHelpOutput();
762 printHelpHelp();
763 }
764
765 public void printLongHelp() {
766 printVersion();
767 printUsage();
768 System.out.println();
769 printHelpOutput();
770 System.out.println();
771 printHelpDirectives();
772 System.out.println();
773 printHelpGenerating();
774 System.out.println();
775 printHelpHelp();
776 }
777
778 public void printHelpOutput() {
779 System.out.println("Output options:");
780 System.out.println(" --screen print output to screen");
781 System.out.println(" -o --oc[+-] include original code in comments");
782 System.out.println(" -v verbose, print warning messages");
783 System.out.println(" -q quiet; don't print even the error messages");
784 System.out.println(" -d print detailed debug messages");
785 }
786
787 public void printHelpGenerating() {
788 System.out.println("Options for generating extra code for tracking code execution");
789 System.out.println(" --genEStackPrint generate print for all EStack changes");
790 System.out.println(" --genAddrPrint generate prints after every address of the original code ");
791 System.out.println(" --genAddrPause generate a pause after every address of the original code ");
792 System.out.println(" --genAddr short for --genAddrPrint and --genAddrPause");
793 System.out.println(" --genAll short for applying all code generation");
794 }
795
796 public void printHelpDirectives(){
797 System.out.println("Alternatives for code generation (* are the defaults):");
798 System.out.print(genPopPush?'*':' ');
799 System.out.println(" --genPopPush generate POP/PUSH instead of TAIL/HEAD");
800 System.out.print(!genPopPush?'*':' ');
801 System.out.println(" --genHeadTail generate TAIL/HEAD instead of POP/PUSH ");
802 System.out.println();
803 System.out.print(genInlinePrint?'*':' ');
804 System.out.println(" --genInlinePrint generate prints directly instead of procedure calls");
805 System.out.print(!genInlinePrint?'*':' ');
806 System.out.println(" --genProcedurePrint generate prints as custom procedure calls");
807 System.out.println();
808 System.out.print(genLocalVars?'*':' ');
809 System.out.println(" --genLocalVars generate local VAR block for temp variables");
810 System.out.print(!genLocalVars?'*':' ');
811 System.out.println(" --genGlobalVars do NOT generate local VAR block for temp variables");
812 System.out.println();
813 System.out.print(genLocalsAsArray?'*':' ');
814 System.out.println(" --genLocalsAsArray generate local variables as an array");
815 System.out.print(!genLocalsAsArray?'*':' ');
816 System.out.println(" --genLocalsSeparate generate local variables as separate entities");
817 }
818
819 public void printHelpHelp() {
820 System.out.println("Help and info options");
821 System.out.println(" -h basic help");
822 System.out.println(" --help print more detailed help");
823 System.out.println(" --version or -version print version and exit");
824 }
825
826 public void printUsage(){
827 System.out.println("usage:\n\t mjc2wsl {options} filename [outfile]");
828 }
829
830 public void printVersion() {
831 System.out.println("MicroJava bytecode to WSL converter " + getVersion()
832 + ", by Doni Pracner");
833 }
834
835 public String makeDefaultOutName(String inname){
836 String rez = inname;
837 if (inname.endsWith(".obj"))
838 rez = rez.substring(0, rez.length() - 4);
839 return rez + ".wsl";
840 }
841
842 public void run(String[] args) {
843 if (args.length == 0) {
844 printHelp();
845 } else {
846 int i = 0;
847 while (i < args.length && args[i].length() > 0 && args[i].charAt(0) == '-') {
848 if (args[i].compareTo("-h") == 0) {
849 printHelp();
850 return;
851 } else if (args[i].compareTo("--help") == 0) {
852 printLongHelp();
853 return;
854 } else if (args[i].compareTo("--version") == 0
855 || args[i].compareTo("-version") == 0) {
856 printVersion();
857 return;
858 } else if (args[i].compareTo("-o") == 0
859 || args[i].startsWith("--oc")) {
860 if (args[i].length() == 2)
861 originalInComments = true;
862 else if (args[i].length() == 5)
863 originalInComments = args[i].charAt(4) == '+';
864 else
865 originalInComments = true;
866 } else if (args[i].compareTo("--screen") == 0) {
867 out = new PrintWriter(System.out);
868 } else if (args[i].compareTo("-d") == 0) {
869 messages.setPrintLevel(TransMessages.M_DEB);// print debug info
870 } else if (args[i].compareTo("-v") == 0) {
871 messages.setPrintLevel(TransMessages.M_WAR);// print warnings
872 } else if (args[i].compareTo("-q") == 0) {
873 messages.setPrintLevel(TransMessages.M_QUIET);// no printing
874 } else if (args[i].compareToIgnoreCase("--genEStackPrint") == 0) {
875 genPrintEStackOnChange = true;
876 } else if (args[i].compareToIgnoreCase("--genAddrPause") == 0) {
877 genPauseAfterEachAddress = true;
878 } else if (args[i].compareToIgnoreCase("--genAddrPrint") == 0) {
879 genPrintForEachAddress = true;
880 } else if (args[i].compareToIgnoreCase("--genAddr") == 0) {
881 genPrintForEachAddress = true;
882 genPauseAfterEachAddress = true;
883 } else if (args[i].compareToIgnoreCase("--genAll") == 0) {
884 genPrintEStackOnChange = true;
885 genPrintForEachAddress = true;
886 genPauseAfterEachAddress = true;
887 } else if (args[i].compareToIgnoreCase("--genPopPush") == 0) {
888 genPopPush = true;
889 } else if (args[i].compareToIgnoreCase("--genInlinePrint") == 0) {
890 genInlinePrint = true;
891 } else if (args[i].compareToIgnoreCase("--genHeadTail") == 0) {
892 genPopPush = false;
893 } else if (args[i].compareToIgnoreCase("--genProcedurePrint") == 0) {
894 genInlinePrint = false;
895 } else if (args[i].compareToIgnoreCase("--genLocalVars") == 0) {
896 genLocalVars = true;
897 } else if (args[i].compareToIgnoreCase("--genGlobalVars") == 0) {
898 genLocalVars = false;
899 } else if (args[i].compareToIgnoreCase("--genLocalsAsArray") == 0) {
900 genLocalsAsArray = true;
901 } else if (args[i].compareToIgnoreCase("--genLocalsSeparate") == 0) {
902 genLocalsAsArray = false;
903 } else {
904 System.err.println("unknown option, refusing to continue: "+args[i]);
905 System.exit(1);
906 }
907 i++;
908 }
909
910 if (i >= args.length) {
911 System.err.println("no filename supplied");
912 System.exit(2);
913 }
914
915 Path p = FileSystems.getDefault().getPath(args[i]);
916 if (!Files.isRegularFile(p)){
917 System.err.println("input file does not exist");
918 System.exit(1);
919 }
920
921 if (i + 1 < args.length) {
922 try {
923 out = new PrintWriter(args[i + 1]);
924 } catch (Exception e) {
925 System.err.println("error in opening out file:");
926 e.printStackTrace();
927 }
928 }
929 if (out == null) {
930 // if not set to screen, or a file, make a default filename
931 try {
932 out = new PrintWriter(makeDefaultOutName(args[i]));
933 } catch (Exception e) {
934 System.err.println("error in opening out file:");
935 e.printStackTrace();
936 }
937 }
938 Calendar now = Calendar.getInstance();
939 try {
940 convertStream(Files.newInputStream(p));
941 } catch (Exception e) {
942 // TODO Auto-generated catch block
943 e.printStackTrace();
944 }
945 long mili = Calendar.getInstance().getTimeInMillis()
946 - now.getTimeInMillis();
947 System.out.println("conversion time:" + mili + " ms");
948 messages.printMessageCounters();
949 out.close();
950 }
951 }
952
953 public static void main(String[] args) {
954 new mjc2wsl().run(args);
955 }
956
957
958 }
MicroJava ByteCode to WSL tool
Svarog.pmf.uns.ac.rs/gitweb maintanance Doni Pracner