JniCodeEmitter.java revision 66a42db8cbfba902f72f0ace5ac448ef4bfd3951 
1/*
2 * Copyright (C) 2006 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17import java.io.PrintStream;
18import java.util.ArrayList;
19import java.util.HashSet;
20import java.util.Iterator;
21import java.util.List;
22
23public class JniCodeEmitter {
24
25    static final boolean mUseCPlusPlus = true;
26    protected boolean mUseContextPointer = true;
27    protected boolean mUseStaticMethods = false;
28    protected boolean mUseSimpleMethodNames = false;
29    protected boolean mUseHideCommentForAPI = false;
30    protected String mClassPathName;
31    protected ParameterChecker mChecker;
32    protected List<String> nativeRegistrations = new ArrayList<String>();
33    boolean needsExit;
34    protected static String indent = "    ";
35    HashSet<String> mFunctionsEmitted = new HashSet<String>();
36
37    public static String getJniName(JType jType) {
38        String jniName = "";
39        if (jType.isEGLHandle()) {
40            return (jType.isArray() ? "[" : "" ) + "Landroid/opengl/" + jType.getBaseType() + ";";
41        } else if (jType.isClass()) {
42            return "L" + jType.getBaseType() + ";";
43        } else if (jType.isArray()) {
44            jniName = "[";
45        }
46
47        String baseType = jType.getBaseType();
48        if (baseType.equals("int")) {
49            jniName += "I";
50        } else if (baseType.equals("float")) {
51            jniName += "F";
52        } else if (baseType.equals("boolean")) {
53            jniName += "Z";
54        } else if (baseType.equals("short")) {
55            jniName += "S";
56        } else if (baseType.equals("long")) {
57            jniName += "L";
58        } else if (baseType.equals("byte")) {
59            jniName += "B";
60        } else if (baseType.equals("String")) {
61            jniName += "Ljava/lang/String;";
62        } else if (baseType.equals("void")) {
63            // nothing.
64        } else {
65            throw new RuntimeException("Unknown primitive basetype " + baseType);
66        }
67        return jniName;
68    }
69
70    public void emitCode(CFunc cfunc, String original,
71            PrintStream javaInterfaceStream,
72            PrintStream javaImplStream,
73            PrintStream cStream) {
74        JFunc jfunc;
75        String signature;
76        boolean duplicate;
77
78        if (cfunc.hasTypedPointerArg()) {
79            jfunc = JFunc.convert(cfunc, true);
80
81            // Don't emit duplicate functions
82            // These may appear because they are defined in multiple
83            // Java interfaces (e.g., GL11/GL11ExtensionPack)
84            signature = jfunc.toString();
85            duplicate = false;
86            if (mFunctionsEmitted.contains(signature)) {
87                duplicate = true;
88            } else {
89                mFunctionsEmitted.add(signature);
90            }
91
92            if (!duplicate) {
93                emitNativeDeclaration(jfunc, javaImplStream);
94                emitJavaCode(jfunc, javaImplStream);
95            }
96            if (javaInterfaceStream != null) {
97                emitJavaInterfaceCode(jfunc, javaInterfaceStream);
98            }
99            if (!duplicate) {
100                emitJniCode(jfunc, cStream);
101            }
102            // Don't create IOBuffer versions of the EGL functions
103            if (cfunc.hasEGLHandleArg()) {
104                return;
105            }
106        }
107
108        jfunc = JFunc.convert(cfunc, false);
109
110        signature = jfunc.toString();
111        duplicate = false;
112        if (mFunctionsEmitted.contains(signature)) {
113            duplicate = true;
114        } else {
115            mFunctionsEmitted.add(signature);
116        }
117
118        if (!duplicate) {
119            emitNativeDeclaration(jfunc, javaImplStream);
120        }
121        if (javaInterfaceStream != null) {
122            emitJavaInterfaceCode(jfunc, javaInterfaceStream);
123        }
124        if (!duplicate) {
125            emitJavaCode(jfunc, javaImplStream);
126            emitJniCode(jfunc, cStream);
127        }
128    }
129
130    public void emitNativeDeclaration(JFunc jfunc, PrintStream out) {
131        if (mUseHideCommentForAPI) {
132            out.println("    /* @hide C function " + jfunc.getCFunc().getOriginal() + " */");
133            out.println();
134        } else {
135            out.println("    // C function " + jfunc.getCFunc().getOriginal());
136            out.println();
137        }
138
139        emitFunction(jfunc, out, true, false);
140    }
141
142    public void emitJavaInterfaceCode(JFunc jfunc, PrintStream out) {
143        emitFunction(jfunc, out, false, true);
144    }
145
146    public void emitJavaCode(JFunc jfunc, PrintStream out) {
147        emitFunction(jfunc, out, false, false);
148    }
149
150    boolean isPointerFunc(JFunc jfunc) {
151        String name = jfunc.getName();
152        return (name.endsWith("Pointer") || name.endsWith("PointerOES"))
153            && jfunc.getCFunc().hasPointerArg();
154    }
155
156    void emitFunctionCall(JFunc jfunc, PrintStream out, String iii, boolean grabArray) {
157        boolean isVoid = jfunc.getType().isVoid();
158        boolean isPointerFunc = isPointerFunc(jfunc);
159
160        if (!isVoid) {
161            out.println(iii +
162                        jfunc.getType() + " _returnValue;");
163        }
164        out.println(iii +
165                    (isVoid ? "" : "_returnValue = ") +
166                    jfunc.getName() +
167                    (isPointerFunc ? "Bounds" : "" ) +
168                    "(");
169
170        int numArgs = jfunc.getNumArgs();
171        for (int i = 0; i < numArgs; i++) {
172            String argName = jfunc.getArgName(i);
173            JType argType = jfunc.getArgType(i);
174
175            if (grabArray && argType.isTypedBuffer()) {
176                String typeName = argType.getBaseType();
177                typeName = typeName.substring(9, typeName.length() - 6);
178                out.println(iii + indent + "get" + typeName + "Array(" + argName + "),");
179                out.print(iii + indent + "getOffset(" + argName + ")");
180            } else {
181                out.print(iii + indent + argName);
182            }
183            if (i == numArgs - 1) {
184                if (isPointerFunc) {
185                    out.println(",");
186                    out.println(iii + indent + argName + ".remaining()");
187                } else {
188                    out.println();
189                }
190            } else {
191                out.println(",");
192            }
193        }
194
195        out.println(iii + ");");
196    }
197
198    void printIfcheckPostamble(PrintStream out, boolean isBuffer, boolean emitExceptionCheck,
199            String iii) {
200                printIfcheckPostamble(out, isBuffer, emitExceptionCheck,
201                                      "offset", "_remaining", iii);
202            }
203
204    void printIfcheckPostamble(PrintStream out, boolean isBuffer, boolean emitExceptionCheck,
205            String offset, String remaining, String iii) {
206                out.println(iii + "    default:");
207                out.println(iii + "        _needed = 0;");
208                out.println(iii + "        break;");
209                out.println(iii + "}");
210
211                out.println(iii + "if (" + remaining + " < _needed) {");
212                out.println(iii + indent + "_exception = 1;");
213                out.println(iii + indent +
214                           "_exceptionType = \"java/lang/IllegalArgumentException\";");
215                out.println(iii + indent +
216                           "_exceptionMessage = \"" +
217                           (isBuffer ? "remaining()" : "length - " + offset) +
218                           " < needed\";");
219                out.println(iii + indent + "goto exit;");
220                out.println(iii + "}");
221
222                needsExit = true;
223            }
224
225    boolean isNullAllowed(CFunc cfunc) {
226        String[] checks = mChecker.getChecks(cfunc.getName());
227        int index = 1;
228        if (checks != null) {
229            while (index < checks.length) {
230                if (checks[index].equals("nullAllowed")) {
231                    return true;
232                } else {
233                    index = skipOneCheck(checks, index);
234                }
235            }
236        }
237        return false;
238    }
239
240    boolean hasCheckTest(CFunc cfunc) {
241        String[] checks = mChecker.getChecks(cfunc.getName());
242        int index = 1;
243        if (checks != null) {
244            while (index < checks.length) {
245                if (checks[index].startsWith("check")) {
246                    return true;
247                } else {
248                    index = skipOneCheck(checks, index);
249                }
250            }
251        }
252        return false;
253    }
254
255    boolean hasIfTest(CFunc cfunc) {
256        String[] checks = mChecker.getChecks(cfunc.getName());
257        int index = 1;
258        if (checks != null) {
259            while (index < checks.length) {
260                if (checks[index].startsWith("ifcheck")) {
261                    return true;
262                } else {
263                    index = skipOneCheck(checks, index);
264                }
265            }
266        }
267        return false;
268    }
269
270    int skipOneCheck(String[] checks, int index) {
271        if (checks[index].equals("return")) {
272            index += 2;
273        } else if (checks[index].startsWith("check")) {
274            index += 3;
275        } else if (checks[index].startsWith("sentinel")) {
276            index += 3;
277        } else if (checks[index].equals("ifcheck")) {
278            index += 5;
279        } else if (checks[index].equals("unsupported")) {
280            index += 1;
281        } else if (checks[index].equals("requires")) {
282            index += 2;
283        } else if (checks[index].equals("nullAllowed")) {
284            index += 1;
285        } else {
286            System.out.println("Error: unknown keyword \"" +
287                               checks[index] + "\"");
288            System.exit(0);
289        }
290
291        return index;
292    }
293
294    String getErrorReturnValue(CFunc cfunc) {
295        CType returnType = cfunc.getType();
296        boolean isVoid = returnType.isVoid();
297        if (isVoid) {
298            return null;
299        }
300
301        if (returnType.getBaseType().startsWith("EGL")) {
302            return "(" + returnType.getDeclaration() + ") 0";
303        }
304
305        String[] checks = mChecker.getChecks(cfunc.getName());
306
307        int index = 1;
308        if (checks != null) {
309            while (index < checks.length) {
310                if (checks[index].equals("return")) {
311                    return checks[index + 1];
312                } else {
313                    index = skipOneCheck(checks, index);
314                }
315            }
316        }
317
318        return null;
319    }
320
321    boolean isUnsupportedFunc(CFunc cfunc) {
322        String[] checks = mChecker.getChecks(cfunc.getName());
323        int index = 1;
324        if (checks != null) {
325            while (index < checks.length) {
326                if (checks[index].equals("unsupported")) {
327                    return true;
328                } else {
329                    index = skipOneCheck(checks, index);
330                }
331            }
332        }
333        return false;
334    }
335
336    String isRequiresFunc(CFunc cfunc) {
337        String[] checks = mChecker.getChecks(cfunc.getName());
338        int index = 1;
339        if (checks != null) {
340            while (index < checks.length) {
341                if (checks[index].equals("requires")) {
342                    return checks[index+1];
343                } else {
344                    index = skipOneCheck(checks, index);
345                }
346            }
347        }
348        return null;
349    }
350
351    void emitNativeBoundsChecks(CFunc cfunc, String cname, PrintStream out,
352            boolean isBuffer, boolean emitExceptionCheck, String offset, String remaining, String iii) {
353
354        String[] checks = mChecker.getChecks(cfunc.getName());
355
356        boolean lastWasIfcheck = false;
357
358        int index = 1;
359        if (checks != null) {
360            while (index < checks.length) {
361                if (checks[index].startsWith("check")) {
362                    if (lastWasIfcheck) {
363                        printIfcheckPostamble(out, isBuffer, emitExceptionCheck,
364                                offset, remaining, iii);
365                    }
366                    lastWasIfcheck = false;
367                    if (cname != null && !cname.equals(checks[index + 1])) {
368                        index += 3;
369                        continue;
370                    }
371                    out.println(iii + "if (" + remaining + " < " + checks[index + 2] + ") {");
372                    out.println(iii + indent + "_exception = 1;");
373                    String exceptionClassName = "java/lang/IllegalArgumentException";
374                    // If the "check" keyword was of the form
375                    // "check_<class name>", use the class name in the
376                    // exception to be thrown
377                    int underscore = checks[index].indexOf('_');
378                    if (underscore >= 0) {
379                        String abbr = checks[index].substring(underscore + 1);
380                        if (abbr.equals("AIOOBE")) {
381                            exceptionClassName = "java/lang/ArrayIndexOutOfBoundsException";
382                        } else {
383                            throw new RuntimeException("unknown exception abbreviation: " + abbr);
384                        }
385                    }
386                    out.println(iii + indent +
387                                "_exceptionType = \""+exceptionClassName+"\";");
388                    out.println(iii + indent +
389                               "_exceptionMessage = \"" +
390                               (isBuffer ? "remaining()" : "length - " +
391                               offset) + " < " + checks[index + 2] +
392                               " < needed\";");
393
394                    out.println(iii + indent + "goto exit;");
395                    out.println(iii + "}");
396
397                    needsExit = true;
398
399                    index += 3;
400                } else if (checks[index].equals("ifcheck")) {
401                    String[] matches = checks[index + 4].split(",");
402
403                    if (!lastWasIfcheck) {
404                        out.println(iii + "int _needed;");
405                        out.println(iii + "switch (" + checks[index + 3] + ") {");
406                    }
407
408                    for (int i = 0; i < matches.length; i++) {
409                        out.println("#if defined(" + matches[i] + ")");
410                        out.println(iii + "    case " + matches[i] + ":");
411                        out.println("#endif // defined(" + matches[i] + ")");
412                    }
413                    out.println(iii + "        _needed = " + checks[index + 2] + ";");
414                    out.println(iii + "        break;");
415
416                    lastWasIfcheck = true;
417                    index += 5;
418                } else {
419                    index = skipOneCheck(checks, index);
420                }
421            }
422        }
423
424        if (lastWasIfcheck) {
425            printIfcheckPostamble(out, isBuffer, emitExceptionCheck, iii);
426        }
427    }
428
429    void emitSentinelCheck(CFunc cfunc, String cname, PrintStream out,
430            boolean isBuffer, boolean emitExceptionCheck, String offset, String remaining, String iii) {
431
432        String[] checks = mChecker.getChecks(cfunc.getName());
433
434        int index = 1;
435        if (checks != null) {
436            while (index < checks.length) {
437                if (checks[index].startsWith("sentinel")) {
438                    if (cname != null && !cname.equals(checks[index + 1])) {
439                        index += 3;
440                        continue;
441                    }
442
443                    out.println(iii + cname + "_sentinel = false;");
444                    out.println(iii + "for (int i = " + remaining +
445                                " - 1; i >= 0; i--)  {");
446                    out.println(iii + indent + "if (" + cname +
447                                "[i] == " + checks[index + 2] + "){");
448                    out.println(iii + indent + indent +
449                                cname + "_sentinel = true;");
450                    out.println(iii + indent + indent + "break;");
451                    out.println(iii + indent + "}");
452                    out.println(iii + "}");
453                    out.println(iii +
454                                "if (" + cname + "_sentinel == false) {");
455                    out.println(iii + indent + "_exception = 1;");
456                    out.println(iii + indent +
457                                "_exceptionType = \"java/lang/IllegalArgumentException\";");
458                    out.println(iii + indent + "_exceptionMessage = \"" + cname +
459                                " must contain " + checks[index + 2] + "!\";");
460                    out.println(iii + indent + "goto exit;");
461                    out.println(iii + "}");
462
463                    needsExit = true;
464                    index += 3;
465                } else {
466                    index = skipOneCheck(checks, index);
467                }
468            }
469        }
470    }
471
472    void emitLocalVariablesForSentinel(CFunc cfunc, PrintStream out) {
473
474        String[] checks = mChecker.getChecks(cfunc.getName());
475
476        int index = 1;
477        if (checks != null) {
478            while (index < checks.length) {
479                if (checks[index].startsWith("sentinel")) {
480                    String cname = checks[index + 1];
481                    out.println(indent + "bool " + cname + "_sentinel = false;");
482
483                    index += 3;
484
485                } else {
486                    index = skipOneCheck(checks, index);
487                }
488            }
489        }
490    }
491
492    boolean hasNonConstArg(JFunc jfunc, CFunc cfunc, List<Integer> nonPrimitiveArgs) {
493        if (nonPrimitiveArgs.size() > 0) {
494            for (int i = nonPrimitiveArgs.size() - 1; i >= 0; i--) {
495                int idx = nonPrimitiveArgs.get(i).intValue();
496                int cIndex = jfunc.getArgCIndex(idx);
497                if (jfunc.getArgType(idx).isArray()) {
498                    if (!cfunc.getArgType(cIndex).isConst()) {
499                        return true;
500                    }
501                } else if (jfunc.getArgType(idx).isBuffer()) {
502                    if (!cfunc.getArgType(cIndex).isConst()) {
503                        return true;
504                    }
505                }
506            }
507        }
508
509        return false;
510    }
511
512    /**
513     * Emit a function in several variants:
514     *
515     * if nativeDecl: public native <returntype> func(args);
516     *
517     * if !nativeDecl:
518     *   if interfaceDecl:  public <returntype> func(args);
519     *   if !interfaceDecl: public <returntype> func(args) { body }
520     */
521    void emitFunction(JFunc jfunc, PrintStream out, boolean nativeDecl, boolean interfaceDecl) {
522        boolean isPointerFunc = isPointerFunc(jfunc);
523
524        if (!nativeDecl && !interfaceDecl && !isPointerFunc) {
525            // If it's not a pointer function, we've already emitted it
526            // with nativeDecl == true
527            return;
528        }
529
530        String maybeStatic = mUseStaticMethods ? "static " : "";
531
532        if (isPointerFunc) {
533            out.println(indent +
534                        (nativeDecl ? "private " + maybeStatic +"native " :
535                         (interfaceDecl ? "" : "public ") + maybeStatic) +
536                        jfunc.getType() + " " +
537                        jfunc.getName() +
538                        (nativeDecl ? "Bounds" : "") +
539                        "(");
540        } else {
541            out.println(indent +
542                        (nativeDecl ? "public " + maybeStatic +"native " :
543                         (interfaceDecl ? "" : "public ") + maybeStatic) +
544                        jfunc.getType() + " " +
545                        jfunc.getName() +
546                        "(");
547        }
548
549        int numArgs = jfunc.getNumArgs();
550        for (int i = 0; i < numArgs; i++) {
551            String argName = jfunc.getArgName(i);
552            JType argType = jfunc.getArgType(i);
553
554            out.print(indent + indent + argType + " " + argName);
555            if (i == numArgs - 1) {
556                if (isPointerFunc && nativeDecl) {
557                    out.println(",");
558                    out.println(indent + indent + "int remaining");
559                } else {
560                    out.println();
561                }
562            } else {
563                out.println(",");
564            }
565        }
566
567        if (nativeDecl || interfaceDecl) {
568            out.println(indent + ");");
569        } else {
570            out.println(indent + ") {");
571
572            String iii = indent + indent;
573
574            // emitBoundsChecks(jfunc, out, iii);
575            emitFunctionCall(jfunc, out, iii, false);
576
577            // Set the pointer after we call the native code, so that if
578            // the native code throws an exception we don't modify the
579            // pointer. We assume that the native code is written so that
580            // if an exception is thrown, then the underlying glXXXPointer
581            // function will not have been called.
582
583            String fname = jfunc.getName();
584            if (isPointerFunc) {
585                // TODO - deal with VBO variants
586                if (fname.equals("glColorPointer")) {
587                    out.println(iii + "if ((size == 4) &&");
588                    out.println(iii + "    ((type == GL_FLOAT) ||");
589                    out.println(iii + "     (type == GL_UNSIGNED_BYTE) ||");
590                    out.println(iii + "     (type == GL_FIXED)) &&");
591                    out.println(iii + "    (stride >= 0)) {");
592                    out.println(iii + indent + "_colorPointer = pointer;");
593                    out.println(iii + "}");
594                } else if (fname.equals("glNormalPointer")) {
595                    out.println(iii + "if (((type == GL_FLOAT) ||");
596                    out.println(iii + "     (type == GL_BYTE) ||");
597                    out.println(iii + "     (type == GL_SHORT) ||");
598                    out.println(iii + "     (type == GL_FIXED)) &&");
599                    out.println(iii + "    (stride >= 0)) {");
600                    out.println(iii + indent + "_normalPointer = pointer;");
601                    out.println(iii + "}");
602                } else if (fname.equals("glTexCoordPointer")) {
603                    out.println(iii + "if (((size == 2) ||");
604                    out.println(iii + "     (size == 3) ||");
605                    out.println(iii + "     (size == 4)) &&");
606                    out.println(iii + "    ((type == GL_FLOAT) ||");
607                    out.println(iii + "     (type == GL_BYTE) ||");
608                    out.println(iii + "     (type == GL_SHORT) ||");
609                    out.println(iii + "     (type == GL_FIXED)) &&");
610                    out.println(iii + "    (stride >= 0)) {");
611                    out.println(iii + indent + "_texCoordPointer = pointer;");
612                    out.println(iii + "}");
613                } else if (fname.equals("glVertexPointer")) {
614                    out.println(iii + "if (((size == 2) ||");
615                    out.println(iii + "     (size == 3) ||");
616                    out.println(iii + "     (size == 4)) &&");
617                    out.println(iii + "    ((type == GL_FLOAT) ||");
618                    out.println(iii + "     (type == GL_BYTE) ||");
619                    out.println(iii + "     (type == GL_SHORT) ||");
620                    out.println(iii + "     (type == GL_FIXED)) &&");
621                    out.println(iii + "    (stride >= 0)) {");
622                    out.println(iii + indent + "_vertexPointer = pointer;");
623                    out.println(iii + "}");
624                } else if (fname.equals("glPointSizePointerOES")) {
625                    out.println(iii + "if (((type == GL_FLOAT) ||");
626                    out.println(iii + "     (type == GL_FIXED)) &&");
627                    out.println(iii + "    (stride >= 0)) {");
628                    out.println(iii + indent + "_pointSizePointerOES = pointer;");
629                    out.println(iii + "}");
630                } else if (fname.equals("glMatrixIndexPointerOES")) {
631                    out.println(iii + "if (((size == 2) ||");
632                    out.println(iii + "     (size == 3) ||");
633                    out.println(iii + "     (size == 4)) &&");
634                    out.println(iii + "    ((type == GL_FLOAT) ||");
635                    out.println(iii + "     (type == GL_BYTE) ||");
636                    out.println(iii + "     (type == GL_SHORT) ||");
637                    out.println(iii + "     (type == GL_FIXED)) &&");
638                    out.println(iii + "    (stride >= 0)) {");
639                    out.println(iii + indent + "_matrixIndexPointerOES = pointer;");
640                    out.println(iii + "}");
641                } else if (fname.equals("glWeightPointer")) {
642                    out.println(iii + "if (((size == 2) ||");
643                    out.println(iii + "     (size == 3) ||");
644                    out.println(iii + "     (size == 4)) &&");
645                    out.println(iii + "    ((type == GL_FLOAT) ||");
646                    out.println(iii + "     (type == GL_BYTE) ||");
647                    out.println(iii + "     (type == GL_SHORT) ||");
648                    out.println(iii + "     (type == GL_FIXED)) &&");
649                    out.println(iii + "    (stride >= 0)) {");
650                    out.println(iii + indent + "_weightPointerOES = pointer;");
651                    out.println(iii + "}");
652                }
653            }
654
655            boolean isVoid = jfunc.getType().isVoid();
656
657            if (!isVoid) {
658                out.println(indent + indent + "return _returnValue;");
659            }
660            out.println(indent + "}");
661        }
662        out.println();
663    }
664
665    public void addNativeRegistration(String s) {
666        nativeRegistrations.add(s);
667    }
668
669    public void emitNativeRegistration(String registrationFunctionName,
670            PrintStream cStream) {
671        cStream.println("static const char *classPathName = \"" +
672                        mClassPathName +
673                        "\";");
674        cStream.println();
675
676        cStream.println("static JNINativeMethod methods[] = {");
677
678        cStream.println("{\"_nativeClassInit\", \"()V\", (void*)nativeClassInit },");
679
680        Iterator<String> i = nativeRegistrations.iterator();
681        while (i.hasNext()) {
682            cStream.println(i.next());
683        }
684
685        cStream.println("};");
686        cStream.println();
687
688
689        cStream.println("int " + registrationFunctionName + "(JNIEnv *_env)");
690        cStream.println("{");
691        cStream.println(indent +
692                        "int err;");
693
694        cStream.println(indent +
695                        "err = android::AndroidRuntime::registerNativeMethods(_env, classPathName, methods, NELEM(methods));");
696
697        cStream.println(indent + "return err;");
698        cStream.println("}");
699    }
700
701    public JniCodeEmitter() {
702        super();
703    }
704
705    String getJniType(JType jType) {
706        if (jType.isVoid()) {
707            return "void";
708        }
709
710        String baseType = jType.getBaseType();
711        if (jType.isPrimitive()) {
712            if (baseType.equals("String")) {
713                return "jstring";
714            } else {
715                return "j" + baseType;
716            }
717        } else if (jType.isArray()) {
718            return jType.isClass() ? "jobjectArray" : "j" + baseType + "Array";
719        } else {
720            return "jobject";
721        }
722    }
723
724    String getJniMangledName(String name) {
725        name = name.replaceAll("_", "_1");
726        name = name.replaceAll(";", "_2");
727        name = name.replaceAll("\\[", "_3");
728        return name;
729    }
730
731    public void emitJniCode(JFunc jfunc, PrintStream out) {
732        CFunc cfunc = jfunc.getCFunc();
733
734        // Emit comment identifying original C function
735        //
736        // Example:
737        //
738        // /* void glClipPlanef ( GLenum plane, const GLfloat *equation ) */
739        //
740        out.println("/* " + cfunc.getOriginal() + " */");
741
742        // Emit JNI signature (name)
743        //
744        // Example:
745        //
746        // void
747        // android_glClipPlanef__I_3FI
748        //
749
750        String outName = "android_" + jfunc.getName();
751        boolean isPointerFunc = isPointerFunc(jfunc);
752        boolean isVBOPointerFunc = (outName.endsWith("Pointer") ||
753                outName.endsWith("PointerOES") ||
754            outName.endsWith("DrawElements") || outName.endsWith("VertexAttribPointer")) &&
755            !jfunc.getCFunc().hasPointerArg();
756        if (isPointerFunc) {
757            outName += "Bounds";
758        }
759
760        out.print("static ");
761        out.println(getJniType(jfunc.getType()));
762        out.print(outName);
763
764        String rsignature = getJniName(jfunc.getType());
765
766        String signature = "";
767        int numArgs = jfunc.getNumArgs();
768        for (int i = 0; i < numArgs; i++) {
769            JType argType = jfunc.getArgType(i);
770            signature += getJniName(argType);
771        }
772        if (isPointerFunc) {
773            signature += "I";
774        }
775
776        // Append signature to function name
777        String sig = getJniMangledName(signature).replace('.', '_').replace('/', '_');
778        if (!mUseSimpleMethodNames) {
779            out.print("__" + sig);
780            outName += "__" + sig;
781        }
782
783        signature = signature.replace('.', '/');
784        rsignature = rsignature.replace('.', '/');
785
786        out.println();
787        if (rsignature.length() == 0) {
788            rsignature = "V";
789        }
790
791        String s = "{\"" +
792            jfunc.getName() +
793            (isPointerFunc ? "Bounds" : "") +
794            "\", \"(" + signature +")" +
795            rsignature +
796            "\", (void *) " +
797            outName +
798            " },";
799        nativeRegistrations.add(s);
800
801        List<Integer> nonPrimitiveArgs = new ArrayList<Integer>();
802        List<Integer> stringArgs = new ArrayList<Integer>();
803        int numBufferArgs = 0;
804        List<String> bufferArgNames = new ArrayList<String>();
805
806        // Emit JNI signature (arguments)
807        //
808        // Example:
809        //
810        // (JNIEnv *_env, jobject this, jint plane, jfloatArray equation_ref, jint offset) {
811        //
812        out.print("  (JNIEnv *_env, jobject _this");
813        for (int i = 0; i < numArgs; i++) {
814            out.print(", ");
815            JType argType = jfunc.getArgType(i);
816            String suffix = "";
817            if (!argType.isPrimitive()) {
818                if (argType.isArray()) {
819                    suffix = "_ref";
820                } else if (argType.isBuffer()) {
821                    suffix = "_buf";
822                }
823                nonPrimitiveArgs.add(new Integer(i));
824                if (jfunc.getArgType(i).isBuffer()) {
825                    int cIndex = jfunc.getArgCIndex(i);
826                    String cname = cfunc.getArgName(cIndex);
827                    bufferArgNames.add(cname);
828                    numBufferArgs++;
829                }
830            }
831
832            if (argType.isString()) {
833                stringArgs.add(new Integer(i));
834            }
835
836            out.print(getJniType(argType) + " " + jfunc.getArgName(i) + suffix);
837        }
838        if (isPointerFunc) {
839            out.print(", jint remaining");
840        }
841        out.println(") {");
842
843        int numArrays = 0;
844        int numBuffers = 0;
845        int numStrings = 0;
846        for (int i = 0; i < nonPrimitiveArgs.size(); i++) {
847            int idx = nonPrimitiveArgs.get(i).intValue();
848            JType argType = jfunc.getArgType(idx);
849            if (argType.isArray()) {
850                ++numArrays;
851            }
852            if (argType.isBuffer()) {
853                ++numBuffers;
854            }
855            if (argType.isString()) {
856                ++numStrings;
857            }
858        }
859
860        // Emit method body
861
862        // Emit local variable declarations for _exception and _returnValue
863        //
864        // Example:
865        //
866        // android::gl::ogles_context_t *ctx;
867        //
868        // jint _exception;
869        // GLenum _returnValue;
870        //
871        CType returnType = cfunc.getType();
872        boolean isVoid = returnType.isVoid();
873
874        boolean isUnsupported = isUnsupportedFunc(cfunc);
875        if (isUnsupported) {
876            out.println(indent +
877                        "jniThrowException(_env, \"java/lang/UnsupportedOperationException\",");
878            out.println(indent +
879                        "    \"" + cfunc.getName() + "\");");
880            if (!isVoid) {
881                String retval = getErrorReturnValue(cfunc);
882                if (cfunc.getType().isEGLHandle()) {
883                    String baseType = cfunc.getType().getBaseType().toLowerCase();
884                    out.println(indent +
885                                "return toEGLHandle(_env, " + baseType + "Class, " +
886                                baseType + "Constructor, " + retval + ");");
887                } else {
888                    out.println(indent + "return " + retval + ";");
889                }
890            }
891            out.println("}");
892            out.println();
893            return;
894        }
895
896        String requiresExtension = isRequiresFunc(cfunc);
897        if (requiresExtension != null) {
898            out.println(indent +
899                        "if (! supportsExtension(_env, _this, have_" + requiresExtension + "ID)) {");
900            out.println(indent + indent +
901                        "jniThrowException(_env, \"java/lang/UnsupportedOperationException\",");
902            out.println(indent + indent +
903                        "    \"" + cfunc.getName() + "\");");
904            if (isVoid) {
905                out.println(indent + indent + "    return;");
906            } else {
907                String retval = getErrorReturnValue(cfunc);
908                if (cfunc.getType().isEGLHandle()) {
909                    String baseType = cfunc.getType().getBaseType().toLowerCase();
910                    out.println(indent +
911                                "return toEGLHandle(_env, " + baseType + "Class, " +
912                                baseType + "Constructor, " + retval + ");");
913                } else {
914                    out.println(indent + "return " + retval + ";");
915                }
916            }
917            out.println(indent + "}");
918        }
919        if (mUseContextPointer) {
920            out.println(indent +
921                "android::gl::ogles_context_t *ctx = getContext(_env, _this);");
922        }
923
924        boolean initializeReturnValue = stringArgs.size() > 0;
925        boolean emitExceptionCheck = ((numArrays > 0 || numStrings > 0)
926                                             && (hasNonConstArg(jfunc, cfunc, nonPrimitiveArgs)
927                                                 || (cfunc.hasPointerArg() && numArrays > 0))
928                                         || hasCheckTest(cfunc)
929                                         || hasIfTest(cfunc))
930                                         || (stringArgs.size() > 0);
931        // mChecker.getChecks(cfunc.getName()) != null
932        // Emit an _exeption variable if there will be error checks
933        if (emitExceptionCheck) {
934            out.println(indent + "jint _exception = 0;");
935            out.println(indent + "const char * _exceptionType;");
936            out.println(indent + "const char * _exceptionMessage;");
937        }
938
939        // Emit a single _array or multiple _XXXArray variables
940        if (numBufferArgs == 1) {
941                out.println(indent + "jarray _array = (jarray) 0;");
942        } else {
943            for (int i = 0; i < numBufferArgs; i++) {
944                out.println(indent + "jarray _" + bufferArgNames.get(i) +
945                            "Array = (jarray) 0;");
946            }
947        }
948        if (!isVoid) {
949            String retval = getErrorReturnValue(cfunc);
950            if (retval != null) {
951                out.println(indent + returnType.getDeclaration() +
952                            " _returnValue = " + retval + ";");
953            } else if (initializeReturnValue) {
954                out.println(indent + returnType.getDeclaration() +
955                            " _returnValue = 0;");
956            } else {
957                out.println(indent + returnType.getDeclaration() +
958                            " _returnValue;");
959            }
960        }
961
962        // Emit local variable declarations for EGL Handles
963        //
964        // Example:
965        //
966        // EGLSurface surface_native = (EGLHandle)fromEGLHandle(_env, surfaceClass, surfaceConstructor, surface);
967        //
968        if (nonPrimitiveArgs.size() > 0) {
969            for (int i = 0; i < nonPrimitiveArgs.size(); i++) {
970                int idx = nonPrimitiveArgs.get(i).intValue();
971                int cIndex = jfunc.getArgCIndex(idx);
972                String cname = cfunc.getArgName(cIndex);
973
974                if (jfunc.getArgType(idx).isBuffer()
975                   || jfunc.getArgType(idx).isArray()
976                   || !jfunc.getArgType(idx).isEGLHandle())
977                    continue;
978
979                CType type = cfunc.getArgType(jfunc.getArgCIndex(idx));
980                String decl = type.getDeclaration();
981                out.println(indent +
982                            decl + " " + cname + "_native = (" +
983                            decl + ") fromEGLHandle(_env, " +
984                            type.getBaseType().toLowerCase() +
985                            "GetHandleID, " + jfunc.getArgName(idx) +
986                            ");");
987            }
988        }
989
990        // Emit local variable declarations for element/sentinel checks
991        //
992        // Example:
993        //
994        // bool attrib_list_sentinel_found = false;
995        //
996        emitLocalVariablesForSentinel(cfunc, out);
997
998        // Emit local variable declarations for pointer arguments
999        //
1000        // Example:
1001        //
1002        // GLfixed *eqn_base;
1003        // GLfixed *eqn;
1004        //
1005        String offset = "offset";
1006        String remaining = "_remaining";
1007        if (nonPrimitiveArgs.size() > 0) {
1008            for (int i = 0; i < nonPrimitiveArgs.size(); i++) {
1009                int idx = nonPrimitiveArgs.get(i).intValue();
1010                int cIndex = jfunc.getArgCIndex(idx);
1011                String cname = cfunc.getArgName(cIndex);
1012
1013                if (!jfunc.getArgType(idx).isBuffer() && !jfunc.getArgType(idx).isArray())
1014                    continue;
1015
1016                CType type = cfunc.getArgType(jfunc.getArgCIndex(idx));
1017                String decl = type.getDeclaration();
1018                if (jfunc.getArgType(idx).isArray() && !jfunc.getArgType(idx).isClass()) {
1019                    out.println(indent +
1020                                decl +
1021                                (decl.endsWith("*") ? "" : " ") +
1022                                jfunc.getArgName(idx) +
1023                                "_base = (" + decl + ") 0;");
1024                }
1025                remaining = ((numArrays + numBuffers) <= 1) ? "_remaining" :
1026                    "_" + cname + "Remaining";
1027                out.println(indent +
1028                            "jint " + remaining + ";");
1029                out.println(indent +
1030                                decl +
1031                                (decl.endsWith("*") ? "" : " ") +
1032                                jfunc.getArgName(idx) +
1033                                " = (" + decl + ") 0;");
1034            }
1035
1036            out.println();
1037        }
1038
1039        // Emit local variable declaration for strings
1040        if (stringArgs.size() > 0) {
1041            for (int i = 0; i < stringArgs.size(); i++) {
1042                int idx = stringArgs.get(i).intValue();
1043                int cIndex = jfunc.getArgCIndex(idx);
1044                String cname = cfunc.getArgName(cIndex);
1045
1046                out.println(indent + "const char* _native" + cname + " = 0;");
1047            }
1048
1049            out.println();
1050        }
1051
1052        // Null pointer checks and GetStringUTFChars
1053        if (stringArgs.size() > 0) {
1054            for (int i = 0; i < stringArgs.size(); i++) {
1055                int idx = stringArgs.get(i).intValue();
1056                int cIndex = jfunc.getArgCIndex(idx);
1057                String cname = cfunc.getArgName(cIndex);
1058
1059                CType type = cfunc.getArgType(jfunc.getArgCIndex(idx));
1060                String decl = type.getDeclaration();
1061                needsExit = true;
1062                out.println(indent + "if (!" + cname + ") {");
1063                out.println(indent + indent +
1064                            "_exceptionType = \"java/lang/IllegalArgumentException\";");
1065                out.println(indent + indent +
1066                            "_exceptionMessage = \"" + cname + " == null\";");
1067                out.println(indent + indent + "goto exit;");
1068                out.println(indent + "}");
1069
1070                out.println(indent + "_native" + cname + " = _env->GetStringUTFChars(" + cname + ", 0);");
1071            }
1072
1073            out.println();
1074        }
1075
1076        // Emit 'GetPrimitiveArrayCritical' for non-object arrays
1077        // Emit 'GetPointer' calls for Buffer pointers
1078        int bufArgIdx = 0;
1079        if (nonPrimitiveArgs.size() > 0) {
1080            for (int i = 0; i < nonPrimitiveArgs.size(); i++) {
1081                int idx = nonPrimitiveArgs.get(i).intValue();
1082                int cIndex = jfunc.getArgCIndex(idx);
1083
1084                String cname = cfunc.getArgName(cIndex);
1085                offset = numArrays <= 1 ? "offset" :
1086                    cname + "Offset";
1087                remaining = ((numArrays + numBuffers) <= 1) ? "_remaining" :
1088                    "_" + cname + "Remaining";
1089
1090                if (jfunc.getArgType(idx).isArray()
1091                       && !jfunc.getArgType(idx).isEGLHandle()) {
1092                    needsExit = true;
1093                    out.println(indent + "if (!" + cname + "_ref) {");
1094                    out.println(indent + indent + "_exception = 1;");
1095                    out.println(indent + indent +
1096                                "_exceptionType = \"java/lang/IllegalArgumentException\";");
1097                    out.println(indent + indent +
1098                                "_exceptionMessage = \"" + cname +" == null\";");
1099                    out.println(indent + indent + "goto exit;");
1100                    out.println(indent + "}");
1101                    out.println(indent + "if (" + offset + " < 0) {");
1102                    out.println(indent + indent + "_exception = 1;");
1103                    out.println(indent + indent +
1104                                "_exceptionType = \"java/lang/IllegalArgumentException\";");
1105                    out.println(indent + indent +
1106                                "_exceptionMessage = \"" + offset +" < 0\";");
1107                    out.println(indent + indent + "goto exit;");
1108                    out.println(indent + "}");
1109
1110                    out.println(indent + remaining + " = " +
1111                                    (mUseCPlusPlus ? "_env" : "(*_env)") +
1112                                    "->GetArrayLength(" +
1113                                    (mUseCPlusPlus ? "" : "_env, ") +
1114                                    cname + "_ref) - " + offset + ";");
1115
1116                    emitNativeBoundsChecks(cfunc, cname, out, false,
1117                                           emitExceptionCheck,
1118                                           offset, remaining, "    ");
1119
1120                    out.println(indent +
1121                                cname +
1122                                "_base = (" +
1123                                cfunc.getArgType(cIndex).getDeclaration() +
1124                                ")");
1125                    out.println(indent + "    " +
1126                                (mUseCPlusPlus ? "_env" : "(*_env)") +
1127                                "->GetPrimitiveArrayCritical(" +
1128                                (mUseCPlusPlus ? "" : "_env, ") +
1129                                jfunc.getArgName(idx) +
1130                                "_ref, (jboolean *)0);");
1131                    out.println(indent +
1132                                cname + " = " + cname + "_base + " + offset + ";");
1133
1134                    emitSentinelCheck(cfunc, cname, out, false,
1135                                      emitExceptionCheck, offset,
1136                                      remaining, indent);
1137                    out.println();
1138                } else if (jfunc.getArgType(idx).isArray()
1139                              && jfunc.getArgType(idx).isEGLHandle()) {
1140                    needsExit = true;
1141                    out.println(indent + "if (!" + cname + "_ref) {");
1142                    out.println(indent + indent + "_exception = 1;");
1143                    out.println(indent + indent +
1144                                "_exceptionType = \"java/lang/IllegalArgumentException\";");
1145                    out.println(indent + indent + "_exceptionMessage = \"" + cname +" == null\";");
1146                    out.println(indent + indent + "goto exit;");
1147                    out.println(indent + "}");
1148                    out.println(indent + "if (" + offset + " < 0) {");
1149                    out.println(indent + indent + "_exception = 1;");
1150                    out.println(indent + indent +
1151                                "_exceptionType = \"java/lang/IllegalArgumentException\";");
1152                    out.println(indent + indent + "_exceptionMessage = \"" + offset +" < 0\";");
1153                    out.println(indent + indent + "goto exit;");
1154                    out.println(indent + "}");
1155
1156                    out.println(indent + remaining + " = " +
1157                                    (mUseCPlusPlus ? "_env" : "(*_env)") +
1158                                    "->GetArrayLength(" +
1159                                    (mUseCPlusPlus ? "" : "_env, ") +
1160                                    cname + "_ref) - " + offset + ";");
1161                    emitNativeBoundsChecks(cfunc, cname, out, false,
1162                                           emitExceptionCheck,
1163                                           offset, remaining, "    ");
1164                    out.println(indent +
1165                                jfunc.getArgName(idx) + " = new " +
1166                                cfunc.getArgType(cIndex).getBaseType() +
1167                               "["+ remaining + "];");
1168                    out.println();
1169                } else if (jfunc.getArgType(idx).isBuffer()) {
1170                    String array = numBufferArgs <= 1 ? "_array" :
1171                        "_" + bufferArgNames.get(bufArgIdx++) + "Array";
1172
1173                    boolean nullAllowed = isNullAllowed(cfunc) || isPointerFunc;
1174                    if (nullAllowed) {
1175                        out.println(indent + "if (" + cname + "_buf) {");
1176                        out.print(indent);
1177                    }
1178
1179                    if (isPointerFunc) {
1180                        out.println(indent +
1181                                cname +
1182                                " = (" +
1183                                cfunc.getArgType(cIndex).getDeclaration() +
1184                                ") getDirectBufferPointer(_env, " +
1185                                cname + "_buf);");
1186                        String iii = "    ";
1187                        out.println(iii + indent + "if ( ! " + cname + " ) {");
1188                        out.println(iii + indent + indent + "return;");
1189                        out.println(iii + indent + "}");
1190                    } else {
1191                        out.println(indent +
1192                                    cname +
1193                                    " = (" +
1194                                    cfunc.getArgType(cIndex).getDeclaration() +
1195                                    ")getPointer(_env, " +
1196                                    cname +
1197                                    "_buf, &" + array + ", &" + remaining +
1198                                    ");");
1199                    }
1200
1201                    emitNativeBoundsChecks(cfunc, cname, out, true,
1202                                           emitExceptionCheck,
1203                                           offset, remaining, nullAllowed ? "        " : "    ");
1204
1205                    if (nullAllowed) {
1206                        out.println(indent + "}");
1207                    }
1208                }
1209            }
1210        }
1211
1212        if (!isVoid) {
1213            out.print(indent + "_returnValue = ");
1214        } else {
1215            out.print(indent);
1216        }
1217        String name = cfunc.getName();
1218
1219        if (mUseContextPointer) {
1220            name = name.substring(2, name.length()); // Strip off 'gl' prefix
1221            name = name.substring(0, 1).toLowerCase() +
1222                name.substring(1, name.length());
1223            out.print("ctx->procs.");
1224        }
1225
1226        out.print(name + (isPointerFunc ? "Bounds" : "") + "(");
1227
1228        numArgs = cfunc.getNumArgs();
1229        if (numArgs == 0) {
1230            if (mUseContextPointer) {
1231                out.println("ctx);");
1232            } else {
1233                out.println(");");
1234            }
1235        } else {
1236            if (mUseContextPointer) {
1237                out.println("ctx,");
1238            } else {
1239                out.println();
1240            }
1241            for (int i = 0; i < numArgs; i++) {
1242                String typecast;
1243                if (i == numArgs - 1 && isVBOPointerFunc) {
1244                    typecast = "(const GLvoid *)";
1245                } else {
1246                    typecast = "(" + cfunc.getArgType(i).getDeclaration() + ")";
1247                }
1248                out.print(indent + indent +
1249                          typecast);
1250
1251                if (cfunc.getArgType(i).isConstCharPointer()) {
1252                    out.print("_native");
1253                }
1254
1255		if (cfunc.getArgType(i).isEGLHandle() &&
1256                    !cfunc.getArgType(i).isPointer()){
1257                    out.print(cfunc.getArgName(i)+"_native");
1258                } else {
1259                    out.print(cfunc.getArgName(i));
1260                }
1261
1262                if (i == numArgs - 1) {
1263                    if (isPointerFunc) {
1264                        out.println(",");
1265                        out.println(indent + indent + "(GLsizei)remaining");
1266                    } else {
1267                        out.println();
1268                    }
1269                } else {
1270                    out.println(",");
1271                }
1272            }
1273            out.println(indent + ");");
1274        }
1275
1276        if (needsExit) {
1277            out.println();
1278            out.println("exit:");
1279            needsExit = false;
1280        }
1281
1282        bufArgIdx = 0;
1283        if (nonPrimitiveArgs.size() > 0) {
1284            for (int i = nonPrimitiveArgs.size() - 1; i >= 0; i--) {
1285                int idx = nonPrimitiveArgs.get(i).intValue();
1286
1287                int cIndex = jfunc.getArgCIndex(idx);
1288                if (jfunc.getArgType(idx).isArray() && !jfunc.getArgType(idx).isClass()) {
1289
1290                    // If the argument is 'const', GL will not write to it.
1291                    // In this case, we can use the 'JNI_ABORT' flag to avoid
1292                    // the need to write back to the Java array
1293                    out.println(indent +
1294                                "if (" + jfunc.getArgName(idx) + "_base) {");
1295                    out.println(indent + indent +
1296                                (mUseCPlusPlus ? "_env" : "(*_env)") +
1297                                "->ReleasePrimitiveArrayCritical(" +
1298                                (mUseCPlusPlus ? "" : "_env, ") +
1299                                jfunc.getArgName(idx) + "_ref, " +
1300                                cfunc.getArgName(cIndex) +
1301                                "_base,");
1302                    out.println(indent + indent + indent +
1303                                (cfunc.getArgType(cIndex).isConst() ?
1304                                 "JNI_ABORT" : "_exception ? JNI_ABORT: 0" ) +
1305                                ");");
1306                    out.println(indent + "}");
1307                } else if (jfunc.getArgType(idx).isBuffer()) {
1308                    if (! isPointerFunc) {
1309                        String array = numBufferArgs <= 1 ? "_array" :
1310                            "_" + bufferArgNames.get(bufArgIdx++) + "Array";
1311                        out.println(indent + "if (" + array + ") {");
1312                        out.println(indent + indent +
1313                                    "releasePointer(_env, " + array + ", " +
1314                                    cfunc.getArgName(cIndex) +
1315                                    ", " +
1316                                    (cfunc.getArgType(cIndex).isConst() ?
1317                                     "JNI_FALSE" : (emitExceptionCheck ?
1318                                     "_exception ? JNI_FALSE : JNI_TRUE" : "JNI_TRUE")) +
1319                                    ");");
1320                        out.println(indent + "}");
1321                    }
1322                }
1323            }
1324        }
1325
1326        // Emit local variable declaration for strings
1327        if (stringArgs.size() > 0) {
1328            for (int i = 0; i < stringArgs.size(); i++) {
1329                int idx = stringArgs.get(i).intValue();
1330                int cIndex = jfunc.getArgCIndex(idx);
1331                String cname = cfunc.getArgName(cIndex);
1332
1333                out.println(indent + "if (_native" + cname + ") {");
1334                out.println(indent + "    _env->ReleaseStringUTFChars(" + cname + ", _native" + cname + ");");
1335                out.println(indent + "}");
1336            }
1337
1338            out.println();
1339        }
1340
1341        // Copy results back to java arrays
1342       if (nonPrimitiveArgs.size() > 0) {
1343            for (int i = nonPrimitiveArgs.size() - 1; i >= 0; i--) {
1344                int idx = nonPrimitiveArgs.get(i).intValue();
1345                int cIndex = jfunc.getArgCIndex(idx);
1346                String baseType = cfunc.getArgType(cIndex).getBaseType().toLowerCase();
1347                if (jfunc.getArgType(idx).isArray() && jfunc.getArgType(idx).isClass()) {
1348                    remaining  = ((numArrays + numBuffers) <= 1) ? "_remaining" :
1349                                     "_" + cfunc.getArgName(cIndex) + "Remaining";
1350                    offset = numArrays <= 1 ? "offset" : cfunc.getArgName(cIndex) + "Offset";
1351                    out.println(indent +
1352                                "if (" + jfunc.getArgName(idx) + ") {");
1353                    out.println(indent + indent +
1354                                "for (int i = 0; i < " + remaining + "; i++) {");
1355                    out.println(indent + indent + indent +
1356                                "jobject " + cfunc.getArgName(cIndex) +
1357                                "_new = toEGLHandle(_env, " + baseType +
1358                                "Class, " + baseType + "Constructor, " +
1359                                cfunc.getArgName(cIndex) + "[i]);");
1360                    out.println(indent + indent + indent +
1361                                (mUseCPlusPlus ? "_env" : "(*_env)") +
1362                                "->SetObjectArrayElement(" +
1363                                (mUseCPlusPlus ? "" : "_env, ") +
1364                                cfunc.getArgName(cIndex) +
1365                                "_ref, i + " + offset + ", " +
1366                                cfunc.getArgName(cIndex) + "_new);");
1367                    out.println(indent + indent + "}");
1368                    out.println(indent + indent +
1369                                "delete[] " + jfunc.getArgName(idx) + ";");
1370                    out.println(indent + "}");
1371                }
1372            }
1373        }
1374
1375
1376        // Throw exception if there is one
1377        if (emitExceptionCheck) {
1378            out.println(indent + "if (_exception) {");
1379            out.println(indent + indent +
1380                        "jniThrowException(_env, _exceptionType, _exceptionMessage);");
1381            out.println(indent + "}");
1382
1383        }
1384
1385
1386        if (!isVoid) {
1387            if (cfunc.getType().isEGLHandle()) {
1388                String baseType = cfunc.getType().getBaseType().toLowerCase();
1389                out.println(indent +
1390                            "return toEGLHandle(_env, " + baseType + "Class, " +
1391                            baseType + "Constructor, _returnValue);");
1392            } else {
1393                out.println(indent + "return _returnValue;");
1394            }
1395        }
1396
1397        out.println("}");
1398        out.println();
1399    }
1400
1401}
1402