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 += "J";
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 = 1;");
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 isPointerOffsetFunc =
753            (outName.endsWith("Pointer") || outName.endsWith("PointerOES") ||
754             outName.endsWith("glDrawElements") ||
755             outName.endsWith("glDrawRangeElements") ||
756             outName.endsWith("glTexImage2D") ||
757             outName.endsWith("glTexSubImage2D") ||
758             outName.endsWith("glCompressedTexImage2D") ||
759             outName.endsWith("glCompressedTexSubImage2D") ||
760             outName.endsWith("glTexImage3D") ||
761             outName.endsWith("glTexSubImage3D") ||
762             outName.endsWith("glCompressedTexImage3D") ||
763             outName.endsWith("glCompressedTexSubImage3D") ||
764             outName.endsWith("glReadPixels"))
765            && !jfunc.getCFunc().hasPointerArg();
766        if (isPointerFunc) {
767            outName += "Bounds";
768        }
769
770        out.print("static ");
771        out.println(getJniType(jfunc.getType()));
772        out.print(outName);
773
774        String rsignature = getJniName(jfunc.getType());
775
776        String signature = "";
777        int numArgs = jfunc.getNumArgs();
778        for (int i = 0; i < numArgs; i++) {
779            JType argType = jfunc.getArgType(i);
780            signature += getJniName(argType);
781        }
782        if (isPointerFunc) {
783            signature += "I";
784        }
785
786        // Append signature to function name
787        String sig = getJniMangledName(signature).replace('.', '_').replace('/', '_');
788        if (!mUseSimpleMethodNames) {
789            out.print("__" + sig);
790            outName += "__" + sig;
791        }
792
793        signature = signature.replace('.', '/');
794        rsignature = rsignature.replace('.', '/');
795
796        out.println();
797        if (rsignature.length() == 0) {
798            rsignature = "V";
799        }
800
801        String s = "{\"" +
802            jfunc.getName() +
803            (isPointerFunc ? "Bounds" : "") +
804            "\", \"(" + signature +")" +
805            rsignature +
806            "\", (void *) " +
807            outName +
808            " },";
809        nativeRegistrations.add(s);
810
811        List<Integer> nonPrimitiveArgs = new ArrayList<Integer>();
812        List<Integer> stringArgs = new ArrayList<Integer>();
813        int numBufferArgs = 0;
814        List<String> bufferArgNames = new ArrayList<String>();
815
816        // Emit JNI signature (arguments)
817        //
818        // Example:
819        //
820        // (JNIEnv *_env, jobject this, jint plane, jfloatArray equation_ref, jint offset) {
821        //
822        out.print("  (JNIEnv *_env, jobject _this");
823        for (int i = 0; i < numArgs; i++) {
824            out.print(", ");
825            JType argType = jfunc.getArgType(i);
826            String suffix = "";
827            if (!argType.isPrimitive()) {
828                if (argType.isArray()) {
829                    suffix = "_ref";
830                } else if (argType.isBuffer()) {
831                    suffix = "_buf";
832                }
833                nonPrimitiveArgs.add(new Integer(i));
834                if (jfunc.getArgType(i).isBuffer()) {
835                    int cIndex = jfunc.getArgCIndex(i);
836                    String cname = cfunc.getArgName(cIndex);
837                    bufferArgNames.add(cname);
838                    numBufferArgs++;
839                }
840            }
841
842            if (argType.isString()) {
843                stringArgs.add(new Integer(i));
844            }
845
846            out.print(getJniType(argType) + " " + jfunc.getArgName(i) + suffix);
847        }
848        if (isPointerFunc) {
849            out.print(", jint remaining");
850        }
851        out.println(") {");
852
853        int numArrays = 0;
854        int numBuffers = 0;
855        int numStrings = 0;
856        for (int i = 0; i < nonPrimitiveArgs.size(); i++) {
857            int idx = nonPrimitiveArgs.get(i).intValue();
858            JType argType = jfunc.getArgType(idx);
859            if (argType.isArray()) {
860                ++numArrays;
861            }
862            if (argType.isBuffer()) {
863                ++numBuffers;
864            }
865            if (argType.isString()) {
866                ++numStrings;
867            }
868        }
869
870        // Emit method body
871
872        // Emit local variable declarations for _exception and _returnValue
873        //
874        // Example:
875        //
876        // android::gl::ogles_context_t *ctx;
877        //
878        // jint _exception;
879        // GLenum _returnValue;
880        //
881        CType returnType = cfunc.getType();
882        boolean isVoid = returnType.isVoid();
883
884        boolean isUnsupported = isUnsupportedFunc(cfunc);
885        if (isUnsupported) {
886            out.println(indent +
887                        "jniThrowException(_env, \"java/lang/UnsupportedOperationException\",");
888            out.println(indent +
889                        "    \"" + cfunc.getName() + "\");");
890            if (!isVoid) {
891                String retval = getErrorReturnValue(cfunc);
892                if (cfunc.getType().isEGLHandle()) {
893                    String baseType = cfunc.getType().getBaseType().toLowerCase();
894                    out.println(indent +
895                                "return toEGLHandle(_env, " + baseType + "Class, " +
896                                baseType + "Constructor, " + retval + ");");
897                } else {
898                    out.println(indent + "return " + retval + ";");
899                }
900            }
901            out.println("}");
902            out.println();
903            return;
904        }
905
906        String requiresExtension = isRequiresFunc(cfunc);
907        if (requiresExtension != null) {
908            out.println(indent +
909                        "if (! supportsExtension(_env, _this, have_" + requiresExtension + "ID)) {");
910            out.println(indent + indent +
911                        "jniThrowException(_env, \"java/lang/UnsupportedOperationException\",");
912            out.println(indent + indent +
913                        "    \"" + cfunc.getName() + "\");");
914            if (isVoid) {
915                out.println(indent + indent + "    return;");
916            } else {
917                String retval = getErrorReturnValue(cfunc);
918                if (cfunc.getType().isEGLHandle()) {
919                    String baseType = cfunc.getType().getBaseType().toLowerCase();
920                    out.println(indent +
921                                "return toEGLHandle(_env, " + baseType + "Class, " +
922                                baseType + "Constructor, " + retval + ");");
923                } else {
924                    out.println(indent + "return " + retval + ";");
925                }
926            }
927            out.println(indent + "}");
928        }
929        if (mUseContextPointer) {
930            out.println(indent +
931                "android::gl::ogles_context_t *ctx = getContext(_env, _this);");
932        }
933
934        boolean initializeReturnValue = stringArgs.size() > 0;
935        boolean emitExceptionCheck = ((numArrays > 0 || numStrings > 0)
936                                             && (hasNonConstArg(jfunc, cfunc, nonPrimitiveArgs)
937                                                 || (cfunc.hasPointerArg() && numArrays > 0))
938                                         || hasCheckTest(cfunc)
939                                         || hasIfTest(cfunc))
940                                         || (stringArgs.size() > 0);
941        // mChecker.getChecks(cfunc.getName()) != null
942        // Emit an _exeption variable if there will be error checks
943        if (emitExceptionCheck) {
944            out.println(indent + "jint _exception = 0;");
945            out.println(indent + "const char * _exceptionType = NULL;");
946            out.println(indent + "const char * _exceptionMessage = NULL;");
947        }
948
949        // Emit a single _array or multiple _XXXArray variables
950        if (numBufferArgs == 1) {
951                out.println(indent + "jarray _array = (jarray) 0;");
952                out.println(indent + "jint _bufferOffset = (jint) 0;");
953        } else {
954            for (int i = 0; i < numBufferArgs; i++) {
955                out.println(indent + "jarray _" + bufferArgNames.get(i) +
956                            "Array = (jarray) 0;");
957                out.println(indent + "jint _" + bufferArgNames.get(i) +
958                            "BufferOffset = (jint) 0;");
959            }
960        }
961        if (!isVoid) {
962            String retval = getErrorReturnValue(cfunc);
963            if (retval != null) {
964                out.println(indent + returnType.getDeclaration() +
965                            " _returnValue = " + retval + ";");
966            } else if (initializeReturnValue) {
967                out.println(indent + returnType.getDeclaration() +
968                            " _returnValue = 0;");
969            } else {
970                out.println(indent + returnType.getDeclaration() +
971                            " _returnValue;");
972            }
973        }
974
975        // Emit local variable declarations for EGL Handles
976        //
977        // Example:
978        //
979        // EGLSurface surface_native = (EGLHandle)fromEGLHandle(_env, surfaceClass, surfaceConstructor, surface);
980        //
981        if (nonPrimitiveArgs.size() > 0) {
982            for (int i = 0; i < nonPrimitiveArgs.size(); i++) {
983                int idx = nonPrimitiveArgs.get(i).intValue();
984                int cIndex = jfunc.getArgCIndex(idx);
985                String cname = cfunc.getArgName(cIndex);
986
987                if (jfunc.getArgType(idx).isBuffer()
988                   || jfunc.getArgType(idx).isArray()
989                   || !jfunc.getArgType(idx).isEGLHandle())
990                    continue;
991
992                CType type = cfunc.getArgType(jfunc.getArgCIndex(idx));
993                String decl = type.getDeclaration();
994                out.println(indent +
995                            decl + " " + cname + "_native = (" +
996                            decl + ") fromEGLHandle(_env, " +
997                            type.getBaseType().toLowerCase() +
998                            "GetHandleID, " + jfunc.getArgName(idx) +
999                            ");");
1000            }
1001        }
1002
1003        // Emit local variable declarations for element/sentinel checks
1004        //
1005        // Example:
1006        //
1007        // bool attrib_list_sentinel_found = false;
1008        //
1009        emitLocalVariablesForSentinel(cfunc, out);
1010
1011        // Emit local variable declarations for pointer arguments
1012        //
1013        // Example:
1014        //
1015        // GLfixed *eqn_base;
1016        // GLfixed *eqn;
1017        //
1018        String offset = "offset";
1019        String remaining = "_remaining";
1020        if (nonPrimitiveArgs.size() > 0) {
1021            for (int i = 0; i < nonPrimitiveArgs.size(); i++) {
1022                int idx = nonPrimitiveArgs.get(i).intValue();
1023                int cIndex = jfunc.getArgCIndex(idx);
1024                String cname = cfunc.getArgName(cIndex);
1025
1026                if (!jfunc.getArgType(idx).isBuffer() && !jfunc.getArgType(idx).isArray())
1027                    continue;
1028
1029                CType type = cfunc.getArgType(jfunc.getArgCIndex(idx));
1030                String decl = type.getDeclaration();
1031                if (jfunc.getArgType(idx).isArray() && !jfunc.getArgType(idx).isClass()) {
1032                    out.println(indent +
1033                                decl +
1034                                (decl.endsWith("*") ? "" : " ") +
1035                                jfunc.getArgName(idx) +
1036                                "_base = (" + decl + ") 0;");
1037                }
1038                remaining = ((numArrays + numBuffers) <= 1) ? "_remaining" :
1039                    "_" + cname + "Remaining";
1040                out.println(indent +
1041                            "jint " + remaining + ";");
1042                out.println(indent +
1043                                decl +
1044                                (decl.endsWith("*") ? "" : " ") +
1045                                jfunc.getArgName(idx) +
1046                                " = (" + decl + ") 0;");
1047            }
1048
1049            out.println();
1050        }
1051
1052        // Emit local variable declaration for strings
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                out.println(indent + "const char* _native" + cname + " = 0;");
1060            }
1061
1062            out.println();
1063        }
1064
1065        // Null pointer checks and GetStringUTFChars
1066        if (stringArgs.size() > 0) {
1067            for (int i = 0; i < stringArgs.size(); i++) {
1068                int idx = stringArgs.get(i).intValue();
1069                int cIndex = jfunc.getArgCIndex(idx);
1070                String cname = cfunc.getArgName(cIndex);
1071
1072                CType type = cfunc.getArgType(jfunc.getArgCIndex(idx));
1073                String decl = type.getDeclaration();
1074                needsExit = true;
1075                out.println(indent + "if (!" + cname + ") {");
1076                out.println(indent + indent + "_exception = 1;");
1077                out.println(indent + indent +
1078                            "_exceptionType = \"java/lang/IllegalArgumentException\";");
1079                out.println(indent + indent +
1080                            "_exceptionMessage = \"" + cname + " == null\";");
1081                out.println(indent + indent + "goto exit;");
1082                out.println(indent + "}");
1083
1084                out.println(indent + "_native" + cname + " = _env->GetStringUTFChars(" + cname + ", 0);");
1085            }
1086
1087            out.println();
1088        }
1089
1090        // Emit 'GetPrimitiveArrayCritical' for non-object arrays
1091        // Emit 'GetPointer' calls for Buffer pointers
1092        if (nonPrimitiveArgs.size() > 0) {
1093            for (int i = 0; i < nonPrimitiveArgs.size(); i++) {
1094                int idx = nonPrimitiveArgs.get(i).intValue();
1095                int cIndex = jfunc.getArgCIndex(idx);
1096
1097                String cname = cfunc.getArgName(cIndex);
1098                offset = numArrays <= 1 ? "offset" :
1099                    cname + "Offset";
1100                remaining = ((numArrays + numBuffers) <= 1) ? "_remaining" :
1101                    "_" + cname + "Remaining";
1102
1103                if (jfunc.getArgType(idx).isArray()
1104                       && !jfunc.getArgType(idx).isEGLHandle()) {
1105                    needsExit = true;
1106                    out.println(indent + "if (!" + cname + "_ref) {");
1107                    out.println(indent + indent + "_exception = 1;");
1108                    out.println(indent + indent +
1109                                "_exceptionType = \"java/lang/IllegalArgumentException\";");
1110                    out.println(indent + indent +
1111                                "_exceptionMessage = \"" + cname +" == null\";");
1112                    out.println(indent + indent + "goto exit;");
1113                    out.println(indent + "}");
1114                    out.println(indent + "if (" + offset + " < 0) {");
1115                    out.println(indent + indent + "_exception = 1;");
1116                    out.println(indent + indent +
1117                                "_exceptionType = \"java/lang/IllegalArgumentException\";");
1118                    out.println(indent + indent +
1119                                "_exceptionMessage = \"" + offset +" < 0\";");
1120                    out.println(indent + indent + "goto exit;");
1121                    out.println(indent + "}");
1122
1123                    out.println(indent + remaining + " = " +
1124                                    (mUseCPlusPlus ? "_env" : "(*_env)") +
1125                                    "->GetArrayLength(" +
1126                                    (mUseCPlusPlus ? "" : "_env, ") +
1127                                    cname + "_ref) - " + offset + ";");
1128
1129                    emitNativeBoundsChecks(cfunc, cname, out, false,
1130                                           emitExceptionCheck,
1131                                           offset, remaining, "    ");
1132
1133                    out.println(indent +
1134                                cname +
1135                                "_base = (" +
1136                                cfunc.getArgType(cIndex).getDeclaration() +
1137                                ")");
1138                    out.println(indent + "    " +
1139                                (mUseCPlusPlus ? "_env" : "(*_env)") +
1140                                "->GetPrimitiveArrayCritical(" +
1141                                (mUseCPlusPlus ? "" : "_env, ") +
1142                                jfunc.getArgName(idx) +
1143                                "_ref, (jboolean *)0);");
1144                    out.println(indent +
1145                                cname + " = " + cname + "_base + " + offset + ";");
1146
1147                    emitSentinelCheck(cfunc, cname, out, false,
1148                                      emitExceptionCheck, offset,
1149                                      remaining, indent);
1150                    out.println();
1151                } else if (jfunc.getArgType(idx).isArray()
1152                              && jfunc.getArgType(idx).isEGLHandle()) {
1153                    needsExit = true;
1154                    out.println(indent + "if (!" + cname + "_ref) {");
1155                    out.println(indent + indent + "_exception = 1;");
1156                    out.println(indent + indent +
1157                                "_exceptionType = \"java/lang/IllegalArgumentException\";");
1158                    out.println(indent + indent + "_exceptionMessage = \"" + cname +" == null\";");
1159                    out.println(indent + indent + "goto exit;");
1160                    out.println(indent + "}");
1161                    out.println(indent + "if (" + offset + " < 0) {");
1162                    out.println(indent + indent + "_exception = 1;");
1163                    out.println(indent + indent +
1164                                "_exceptionType = \"java/lang/IllegalArgumentException\";");
1165                    out.println(indent + indent + "_exceptionMessage = \"" + offset +" < 0\";");
1166                    out.println(indent + indent + "goto exit;");
1167                    out.println(indent + "}");
1168
1169                    out.println(indent + remaining + " = " +
1170                                    (mUseCPlusPlus ? "_env" : "(*_env)") +
1171                                    "->GetArrayLength(" +
1172                                    (mUseCPlusPlus ? "" : "_env, ") +
1173                                    cname + "_ref) - " + offset + ";");
1174                    emitNativeBoundsChecks(cfunc, cname, out, false,
1175                                           emitExceptionCheck,
1176                                           offset, remaining, "    ");
1177                    out.println(indent +
1178                                jfunc.getArgName(idx) + " = new " +
1179                                cfunc.getArgType(cIndex).getBaseType() +
1180                               "["+ remaining + "];");
1181                    out.println();
1182                } else if (jfunc.getArgType(idx).isBuffer()) {
1183                    String array = numBufferArgs <= 1 ? "_array" :
1184                        "_" + cfunc.getArgName(cIndex) + "Array";
1185                    String bufferOffset = numBufferArgs <= 1 ? "_bufferOffset" :
1186                        "_" + cfunc.getArgName(cIndex) + "BufferOffset";
1187
1188                    boolean nullAllowed = isNullAllowed(cfunc) || isPointerFunc;
1189                    if (nullAllowed) {
1190                        out.println(indent + "if (" + cname + "_buf) {");
1191                        out.print(indent);
1192                    }
1193
1194                    if (isPointerFunc) {
1195                        out.println(indent +
1196                                cname +
1197                                " = (" +
1198                                cfunc.getArgType(cIndex).getDeclaration() +
1199                                ") getDirectBufferPointer(_env, " +
1200                                cname + "_buf);");
1201                        String iii = "    ";
1202                        out.println(iii + indent + "if ( ! " + cname + " ) {");
1203                        out.println(iii + indent + indent + "return;");
1204                        out.println(iii + indent + "}");
1205                    } else {
1206                        out.println(indent +
1207                                    cname +
1208                                    " = (" +
1209                                    cfunc.getArgType(cIndex).getDeclaration() +
1210                                    ")getPointer(_env, " +
1211                                    cname +
1212                                    "_buf, &" + array + ", &" + remaining + ", &" + bufferOffset +
1213                                    ");");
1214                    }
1215
1216                    emitNativeBoundsChecks(cfunc, cname, out, true,
1217                                           emitExceptionCheck,
1218                                           offset, remaining, nullAllowed ? "        " : "    ");
1219
1220                    if (nullAllowed) {
1221                        out.println(indent + "}");
1222                    }
1223                }
1224            }
1225        }
1226
1227        // Emit 'GetPrimitiveArrayCritical' for pointers if needed
1228        if (nonPrimitiveArgs.size() > 0) {
1229            for (int i = 0; i < nonPrimitiveArgs.size(); i++) {
1230                int idx = nonPrimitiveArgs.get(i).intValue();
1231                int cIndex = jfunc.getArgCIndex(idx);
1232
1233                if(!jfunc.getArgType(idx).isBuffer() || isPointerFunc) continue;
1234
1235                String cname = cfunc.getArgName(cIndex);
1236                String bufferOffset = numBufferArgs <= 1 ? "_bufferOffset" :
1237                            "_" + cname + "BufferOffset";
1238                String array = numBufferArgs <= 1 ? "_array" :
1239                            "_" + cfunc.getArgName(cIndex) + "Array";
1240
1241                boolean nullAllowed = isNullAllowed(cfunc) || isPointerFunc;
1242                if (nullAllowed) {
1243                    out.println(indent + "if (" + cname + "_buf && " + cname +" == NULL) {");
1244                } else {
1245                    out.println(indent + "if (" + cname +" == NULL) {");
1246                }
1247                out.println(indent + indent + "char * _" + cname + "Base = (char *)_env->GetPrimitiveArrayCritical(" + array + ", (jboolean *) 0);");
1248                out.println(indent + indent + cname + " = (" +cfunc.getArgType(cIndex).getDeclaration() +") (_" + cname + "Base + " + bufferOffset + ");");
1249                out.println(indent + "}");
1250             }
1251        }
1252
1253
1254        if (!isVoid) {
1255            out.print(indent + "_returnValue = ");
1256        } else {
1257            out.print(indent);
1258        }
1259        String name = cfunc.getName();
1260
1261        if (mUseContextPointer) {
1262            name = name.substring(2, name.length()); // Strip off 'gl' prefix
1263            name = name.substring(0, 1).toLowerCase() +
1264                name.substring(1, name.length());
1265            out.print("ctx->procs.");
1266        }
1267
1268        out.print(name + (isPointerFunc ? "Bounds" : "") + "(");
1269
1270        numArgs = cfunc.getNumArgs();
1271        if (numArgs == 0) {
1272            if (mUseContextPointer) {
1273                out.println("ctx);");
1274            } else {
1275                out.println(");");
1276            }
1277        } else {
1278            if (mUseContextPointer) {
1279                out.println("ctx,");
1280            } else {
1281                out.println();
1282            }
1283            for (int i = 0; i < numArgs; i++) {
1284                String typecast;
1285                if (i == numArgs - 1 && isPointerOffsetFunc) {
1286                    typecast = "reinterpret_cast<GLvoid *>";
1287                } else {
1288                    typecast = "(" + cfunc.getArgType(i).getDeclaration() + ")";
1289                }
1290                out.print(indent + indent +
1291                          typecast);
1292
1293                if (cfunc.getArgType(i).isConstCharPointer()) {
1294                    out.print("_native");
1295                }
1296
1297                if (cfunc.getArgType(i).isEGLHandle() &&
1298                    !cfunc.getArgType(i).isPointer()){
1299                    out.print(cfunc.getArgName(i)+"_native");
1300                } else if (i == numArgs - 1 && isPointerOffsetFunc){
1301                    out.print("("+cfunc.getArgName(i)+")");
1302                } else {
1303                    out.print(cfunc.getArgName(i));
1304                }
1305
1306                if (i == numArgs - 1) {
1307                    if (isPointerFunc) {
1308                        out.println(",");
1309                        out.println(indent + indent + "(GLsizei)remaining");
1310                    } else {
1311                        out.println();
1312                    }
1313                } else {
1314                    out.println(",");
1315                }
1316            }
1317            out.println(indent + ");");
1318        }
1319
1320        if (needsExit) {
1321            out.println();
1322            out.println("exit:");
1323            needsExit = false;
1324        }
1325
1326
1327        if (nonPrimitiveArgs.size() > 0) {
1328            for (int i = nonPrimitiveArgs.size() - 1; i >= 0; i--) {
1329                int idx = nonPrimitiveArgs.get(i).intValue();
1330
1331                int cIndex = jfunc.getArgCIndex(idx);
1332                if (jfunc.getArgType(idx).isArray() && !jfunc.getArgType(idx).isClass()) {
1333
1334                    // If the argument is 'const', GL will not write to it.
1335                    // In this case, we can use the 'JNI_ABORT' flag to avoid
1336                    // the need to write back to the Java array
1337                    out.println(indent +
1338                                "if (" + jfunc.getArgName(idx) + "_base) {");
1339                    out.println(indent + indent +
1340                                (mUseCPlusPlus ? "_env" : "(*_env)") +
1341                                "->ReleasePrimitiveArrayCritical(" +
1342                                (mUseCPlusPlus ? "" : "_env, ") +
1343                                jfunc.getArgName(idx) + "_ref, " +
1344                                cfunc.getArgName(cIndex) +
1345                                "_base,");
1346                    out.println(indent + indent + indent +
1347                                (cfunc.getArgType(cIndex).isConst() ?
1348                                 "JNI_ABORT" : "_exception ? JNI_ABORT: 0" ) +
1349                                ");");
1350                    out.println(indent + "}");
1351                } else if (jfunc.getArgType(idx).isBuffer()) {
1352                    if (! isPointerFunc) {
1353                        String array = numBufferArgs <= 1 ? "_array" :
1354                            "_" + cfunc.getArgName(cIndex) + "Array";
1355                        out.println(indent + "if (" + array + ") {");
1356                        out.println(indent + indent +
1357                                    "releasePointer(_env, " + array + ", " +
1358                                    cfunc.getArgName(cIndex) +
1359                                    ", " +
1360                                    (cfunc.getArgType(cIndex).isConst() ?
1361                                     "JNI_FALSE" : (emitExceptionCheck ?
1362                                     "_exception ? JNI_FALSE : JNI_TRUE" : "JNI_TRUE")) +
1363                                    ");");
1364                        out.println(indent + "}");
1365                    }
1366                }
1367            }
1368        }
1369
1370        // Emit local variable declaration for strings
1371        if (stringArgs.size() > 0) {
1372            for (int i = 0; i < stringArgs.size(); i++) {
1373                int idx = stringArgs.get(i).intValue();
1374                int cIndex = jfunc.getArgCIndex(idx);
1375                String cname = cfunc.getArgName(cIndex);
1376
1377                out.println(indent + "if (_native" + cname + ") {");
1378                out.println(indent + "    _env->ReleaseStringUTFChars(" + cname + ", _native" + cname + ");");
1379                out.println(indent + "}");
1380            }
1381
1382            out.println();
1383        }
1384
1385        // Copy results back to java arrays
1386       if (nonPrimitiveArgs.size() > 0) {
1387            for (int i = nonPrimitiveArgs.size() - 1; i >= 0; i--) {
1388                int idx = nonPrimitiveArgs.get(i).intValue();
1389                int cIndex = jfunc.getArgCIndex(idx);
1390                String baseType = cfunc.getArgType(cIndex).getBaseType().toLowerCase();
1391                if (jfunc.getArgType(idx).isArray() && jfunc.getArgType(idx).isClass()) {
1392                    remaining  = ((numArrays + numBuffers) <= 1) ? "_remaining" :
1393                                     "_" + cfunc.getArgName(cIndex) + "Remaining";
1394                    offset = numArrays <= 1 ? "offset" : cfunc.getArgName(cIndex) + "Offset";
1395                    out.println(indent +
1396                                "if (" + jfunc.getArgName(idx) + ") {");
1397                    out.println(indent + indent +
1398                                "for (int i = 0; i < " + remaining + "; i++) {");
1399                    out.println(indent + indent + indent +
1400                                "jobject " + cfunc.getArgName(cIndex) +
1401                                "_new = toEGLHandle(_env, " + baseType +
1402                                "Class, " + baseType + "Constructor, " +
1403                                cfunc.getArgName(cIndex) + "[i]);");
1404                    out.println(indent + indent + indent +
1405                                (mUseCPlusPlus ? "_env" : "(*_env)") +
1406                                "->SetObjectArrayElement(" +
1407                                (mUseCPlusPlus ? "" : "_env, ") +
1408                                cfunc.getArgName(cIndex) +
1409                                "_ref, i + " + offset + ", " +
1410                                cfunc.getArgName(cIndex) + "_new);");
1411                    out.println(indent + indent + "}");
1412                    out.println(indent + indent +
1413                                "delete[] " + jfunc.getArgName(idx) + ";");
1414                    out.println(indent + "}");
1415                }
1416            }
1417        }
1418
1419
1420        // Throw exception if there is one
1421        if (emitExceptionCheck) {
1422            out.println(indent + "if (_exception) {");
1423            out.println(indent + indent +
1424                        "jniThrowException(_env, _exceptionType, _exceptionMessage);");
1425            out.println(indent + "}");
1426
1427        }
1428
1429
1430        if (!isVoid) {
1431            if (cfunc.getType().isEGLHandle()) {
1432                String baseType = cfunc.getType().getBaseType().toLowerCase();
1433                out.println(indent +
1434                            "return toEGLHandle(_env, " + baseType + "Class, " +
1435                            baseType + "Constructor, _returnValue);");
1436            } else {
1437                out.println(indent + "return (" +
1438                            getJniType(jfunc.getType()) + ")_returnValue;");
1439            }
1440        }
1441
1442        out.println("}");
1443        out.println();
1444    }
1445
1446}
1447