1 /*
2 * Copyright (C) 2019, 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
17 #include "java_writer_q.h"
18
19 #include "utils.h"
20
21 namespace android {
22 namespace stats_log_api_gen {
23
write_java_q_logging_constants(FILE * out,const string & indent)24 void write_java_q_logging_constants(FILE* out, const string& indent) {
25 fprintf(out, "%s// Payload limits.\n", indent.c_str());
26 fprintf(out, "%sprivate static final int LOGGER_ENTRY_MAX_PAYLOAD = 4068;\n", indent.c_str());
27 fprintf(out,
28 "%sprivate static final int MAX_EVENT_PAYLOAD = "
29 "LOGGER_ENTRY_MAX_PAYLOAD - 4;\n",
30 indent.c_str());
31
32 // Value types. Must match with EventLog.java and log.h.
33 fprintf(out, "\n");
34 fprintf(out, "%s// Value types.\n", indent.c_str());
35 fprintf(out, "%sprivate static final byte INT_TYPE = 0;\n", indent.c_str());
36 fprintf(out, "%sprivate static final byte LONG_TYPE = 1;\n", indent.c_str());
37 fprintf(out, "%sprivate static final byte STRING_TYPE = 2;\n", indent.c_str());
38 fprintf(out, "%sprivate static final byte LIST_TYPE = 3;\n", indent.c_str());
39 fprintf(out, "%sprivate static final byte FLOAT_TYPE = 4;\n", indent.c_str());
40
41 // Size of each value type.
42 // Booleans, ints, floats, and enums take 5 bytes, 1 for the type and 4 for
43 // the value.
44 fprintf(out, "\n");
45 fprintf(out, "%s// Size of each value type.\n", indent.c_str());
46 fprintf(out, "%sprivate static final int INT_TYPE_SIZE = 5;\n", indent.c_str());
47 fprintf(out, "%sprivate static final int FLOAT_TYPE_SIZE = 5;\n", indent.c_str());
48 // Longs take 9 bytes, 1 for the type and 8 for the value.
49 fprintf(out, "%sprivate static final int LONG_TYPE_SIZE = 9;\n", indent.c_str());
50 // Strings take 5 metadata bytes: 1 byte is for the type, 4 are for the
51 // length.
52 fprintf(out, "%sprivate static final int STRING_TYPE_OVERHEAD = 5;\n", indent.c_str());
53 fprintf(out, "%sprivate static final int LIST_TYPE_OVERHEAD = 2;\n", indent.c_str());
54 }
55
write_java_methods_q_schema(FILE * out,const SignatureInfoMap & signatureInfoMap,const AtomDecl & attributionDecl,const string & indent)56 int write_java_methods_q_schema(FILE* out, const SignatureInfoMap& signatureInfoMap,
57 const AtomDecl& attributionDecl, const string& indent) {
58 int requiredHelpers = 0;
59 for (auto signatureInfoMapIt = signatureInfoMap.begin();
60 signatureInfoMapIt != signatureInfoMap.end(); signatureInfoMapIt++) {
61 // Print method signature.
62 vector<java_type_t> signature = signatureInfoMapIt->first;
63 fprintf(out, "%spublic static void write(int code", indent.c_str());
64 int argIndex = 1;
65 for (vector<java_type_t>::const_iterator arg = signature.begin(); arg != signature.end();
66 arg++) {
67 if (*arg == JAVA_TYPE_ATTRIBUTION_CHAIN) {
68 for (const auto& chainField : attributionDecl.fields) {
69 fprintf(out, ", %s[] %s", java_type_name(chainField.javaType),
70 chainField.name.c_str());
71 }
72 } else if (*arg == JAVA_TYPE_KEY_VALUE_PAIR) {
73 fprintf(out, ", android.util.SparseArray<Object> valueMap");
74 } else {
75 fprintf(out, ", %s arg%d", java_type_name(*arg), argIndex);
76 }
77 argIndex++;
78 }
79 fprintf(out, ") {\n");
80
81 // Calculate the size of the buffer.
82 fprintf(out, "%s // Initial overhead of the list, timestamp, and atom tag.\n",
83 indent.c_str());
84 fprintf(out,
85 "%s int needed = LIST_TYPE_OVERHEAD + LONG_TYPE_SIZE + "
86 "INT_TYPE_SIZE;\n",
87 indent.c_str());
88 argIndex = 1;
89 for (vector<java_type_t>::const_iterator arg = signature.begin(); arg != signature.end();
90 arg++) {
91 switch (*arg) {
92 case JAVA_TYPE_BOOLEAN:
93 case JAVA_TYPE_INT:
94 case JAVA_TYPE_FLOAT:
95 case JAVA_TYPE_ENUM:
96 fprintf(out, "%s needed += INT_TYPE_SIZE;\n", indent.c_str());
97 break;
98 case JAVA_TYPE_LONG:
99 // Longs take 9 bytes, 1 for the type and 8 for the value.
100 fprintf(out, "%s needed += LONG_TYPE_SIZE;\n", indent.c_str());
101 break;
102 case JAVA_TYPE_STRING:
103 // Strings take 5 metadata bytes + length of byte encoded string.
104 fprintf(out, "%s if (arg%d == null) {\n", indent.c_str(), argIndex);
105 fprintf(out, "%s arg%d = \"\";\n", indent.c_str(), argIndex);
106 fprintf(out, "%s }\n", indent.c_str());
107 fprintf(out,
108 "%s byte[] arg%dBytes = "
109 "arg%d.getBytes(java.nio.charset.StandardCharsets.UTF_8);\n",
110 indent.c_str(), argIndex, argIndex);
111 fprintf(out, "%s needed += STRING_TYPE_OVERHEAD + arg%dBytes.length;\n",
112 indent.c_str(), argIndex);
113 break;
114 case JAVA_TYPE_BYTE_ARRAY:
115 // Byte arrays take 5 metadata bytes + length of byte array.
116 fprintf(out, "%s if (arg%d == null) {\n", indent.c_str(), argIndex);
117 fprintf(out, "%s arg%d = new byte[0];\n", indent.c_str(), argIndex);
118 fprintf(out, "%s }\n", indent.c_str());
119 fprintf(out, "%s needed += STRING_TYPE_OVERHEAD + arg%d.length;\n",
120 indent.c_str(), argIndex);
121 break;
122 case JAVA_TYPE_ATTRIBUTION_CHAIN: {
123 const char* uidName = attributionDecl.fields.front().name.c_str();
124 const char* tagName = attributionDecl.fields.back().name.c_str();
125 // Null checks on the params.
126 fprintf(out, "%s if (%s == null) {\n", indent.c_str(), uidName);
127 fprintf(out, "%s %s = new %s[0];\n", indent.c_str(), uidName,
128 java_type_name(attributionDecl.fields.front().javaType));
129 fprintf(out, "%s }\n", indent.c_str());
130 fprintf(out, "%s if (%s == null) {\n", indent.c_str(), tagName);
131 fprintf(out, "%s %s = new %s[0];\n", indent.c_str(), tagName,
132 java_type_name(attributionDecl.fields.back().javaType));
133 fprintf(out, "%s }\n", indent.c_str());
134
135 // First check that the lengths of the uid and tag arrays are the
136 // same.
137 fprintf(out, "%s if (%s.length != %s.length) {\n", indent.c_str(), uidName,
138 tagName);
139 fprintf(out, "%s return;\n", indent.c_str());
140 fprintf(out, "%s }\n", indent.c_str());
141 fprintf(out, "%s int attrSize = LIST_TYPE_OVERHEAD;\n", indent.c_str());
142 fprintf(out, "%s for (int i = 0; i < %s.length; i++) {\n", indent.c_str(),
143 tagName);
144 fprintf(out, "%s String str%d = (%s[i] == null) ? \"\" : %s[i];\n",
145 indent.c_str(), argIndex, tagName, tagName);
146 fprintf(out,
147 "%s int str%dlen = "
148 "str%d.getBytes(java.nio.charset.StandardCharsets.UTF_8)."
149 "length;\n",
150 indent.c_str(), argIndex, argIndex);
151 fprintf(out,
152 "%s attrSize += "
153 "LIST_TYPE_OVERHEAD + INT_TYPE_SIZE + STRING_TYPE_OVERHEAD + "
154 "str%dlen;\n",
155 indent.c_str(), argIndex);
156 fprintf(out, "%s }\n", indent.c_str());
157 fprintf(out, "%s needed += attrSize;\n", indent.c_str());
158 break;
159 }
160 case JAVA_TYPE_KEY_VALUE_PAIR: {
161 fprintf(out, "%s // Calculate bytes needed by Key Value Pairs.\n",
162 indent.c_str());
163 fprintf(out, "%s final int count = valueMap.size();\n", indent.c_str());
164 fprintf(out, "%s android.util.SparseIntArray intMap = null;\n",
165 indent.c_str());
166 fprintf(out, "%s android.util.SparseLongArray longMap = null;\n",
167 indent.c_str());
168 fprintf(out, "%s android.util.SparseArray<String> stringMap = null;\n",
169 indent.c_str());
170 fprintf(out, "%s android.util.SparseArray<Float> floatMap = null;\n",
171 indent.c_str());
172 fprintf(out, "%s int keyValuePairSize = LIST_TYPE_OVERHEAD;\n",
173 indent.c_str());
174 fprintf(out, "%s for (int i = 0; i < count; i++) {\n", indent.c_str());
175 fprintf(out, "%s final int key = valueMap.keyAt(i);\n", indent.c_str());
176 fprintf(out, "%s final Object value = valueMap.valueAt(i);\n",
177 indent.c_str());
178 fprintf(out, "%s if (value instanceof Integer) {\n", indent.c_str());
179 fprintf(out, "%s keyValuePairSize += LIST_TYPE_OVERHEAD\n",
180 indent.c_str());
181 fprintf(out, "%s + INT_TYPE_SIZE + INT_TYPE_SIZE;\n",
182 indent.c_str());
183 fprintf(out, "%s if (null == intMap) {\n", indent.c_str());
184 fprintf(out, "%s intMap = new android.util.SparseIntArray();\n",
185 indent.c_str());
186 fprintf(out, "%s }\n", indent.c_str());
187 fprintf(out, "%s intMap.put(key, (Integer) value);\n",
188 indent.c_str());
189 fprintf(out, "%s } else if (value instanceof Long) {\n", indent.c_str());
190 fprintf(out, "%s keyValuePairSize += LIST_TYPE_OVERHEAD\n",
191 indent.c_str());
192 fprintf(out, "%s + INT_TYPE_SIZE + LONG_TYPE_SIZE;\n",
193 indent.c_str());
194 fprintf(out, "%s if (null == longMap) {\n", indent.c_str());
195 fprintf(out,
196 "%s longMap = new "
197 "android.util.SparseLongArray();\n",
198 indent.c_str());
199 fprintf(out, "%s }\n", indent.c_str());
200 fprintf(out, "%s longMap.put(key, (Long) value);\n", indent.c_str());
201 fprintf(out, "%s } else if (value instanceof String) {\n",
202 indent.c_str());
203 fprintf(out,
204 "%s final String str = (value == null) ? \"\" : "
205 "(String) value;\n",
206 indent.c_str());
207 fprintf(out,
208 "%s final int len = "
209 "str.getBytes(java.nio.charset.StandardCharsets.UTF_8).length;\n",
210 indent.c_str());
211 fprintf(out,
212 "%s keyValuePairSize += LIST_TYPE_OVERHEAD + "
213 "INT_TYPE_SIZE\n",
214 indent.c_str());
215 fprintf(out, "%s + STRING_TYPE_OVERHEAD + len;\n",
216 indent.c_str());
217 fprintf(out, "%s if (null == stringMap) {\n", indent.c_str());
218 fprintf(out,
219 "%s stringMap = new "
220 "android.util.SparseArray<>();\n",
221 indent.c_str());
222 fprintf(out, "%s }\n", indent.c_str());
223 fprintf(out, "%s stringMap.put(key, str);\n", indent.c_str());
224 fprintf(out, "%s } else if (value instanceof Float) {\n",
225 indent.c_str());
226 fprintf(out, "%s keyValuePairSize += LIST_TYPE_OVERHEAD\n",
227 indent.c_str());
228 fprintf(out, "%s + INT_TYPE_SIZE + FLOAT_TYPE_SIZE;\n",
229 indent.c_str());
230 fprintf(out, "%s if (null == floatMap) {\n", indent.c_str());
231 fprintf(out,
232 "%s floatMap = new "
233 "android.util.SparseArray<>();\n",
234 indent.c_str());
235 fprintf(out, "%s }\n", indent.c_str());
236 fprintf(out, "%s floatMap.put(key, (Float) value);\n",
237 indent.c_str());
238 fprintf(out, "%s }\n", indent.c_str());
239 fprintf(out, "%s }\n", indent.c_str());
240 fprintf(out, "%s needed += keyValuePairSize;\n", indent.c_str());
241 break;
242 }
243 default:
244 // Unsupported types: OBJECT, DOUBLE.
245 fprintf(stderr, "Module logging does not yet support Object and Double.\n");
246 return 1;
247 }
248 argIndex++;
249 }
250
251 // Now we have the size that is needed. Check for overflow and return if
252 // needed.
253 fprintf(out, "%s if (needed > MAX_EVENT_PAYLOAD) {\n", indent.c_str());
254 fprintf(out, "%s return;\n", indent.c_str());
255 fprintf(out, "%s }\n", indent.c_str());
256
257 // Create new buffer, and associated data types.
258 fprintf(out, "%s byte[] buff = new byte[needed];\n", indent.c_str());
259 fprintf(out, "%s int pos = 0;\n", indent.c_str());
260
261 // Initialize the buffer with list data type.
262 fprintf(out, "%s buff[pos] = LIST_TYPE;\n", indent.c_str());
263 fprintf(out, "%s buff[pos + 1] = %zu;\n", indent.c_str(), signature.size() + 2);
264 fprintf(out, "%s pos += LIST_TYPE_OVERHEAD;\n", indent.c_str());
265
266 // Write timestamp.
267 fprintf(out, "%s long elapsedRealtime = SystemClock.elapsedRealtimeNanos();\n",
268 indent.c_str());
269 fprintf(out, "%s buff[pos] = LONG_TYPE;\n", indent.c_str());
270 fprintf(out, "%s copyLong(buff, pos + 1, elapsedRealtime);\n", indent.c_str());
271 fprintf(out, "%s pos += LONG_TYPE_SIZE;\n", indent.c_str());
272
273 // Write atom code.
274 fprintf(out, "%s buff[pos] = INT_TYPE;\n", indent.c_str());
275 fprintf(out, "%s copyInt(buff, pos + 1, code);\n", indent.c_str());
276 fprintf(out, "%s pos += INT_TYPE_SIZE;\n", indent.c_str());
277
278 // Write the args.
279 argIndex = 1;
280 for (vector<java_type_t>::const_iterator arg = signature.begin(); arg != signature.end();
281 arg++) {
282 switch (*arg) {
283 case JAVA_TYPE_BOOLEAN:
284 fprintf(out, "%s buff[pos] = INT_TYPE;\n", indent.c_str());
285 fprintf(out, "%s copyInt(buff, pos + 1, arg%d? 1 : 0);\n", indent.c_str(),
286 argIndex);
287 fprintf(out, "%s pos += INT_TYPE_SIZE;\n", indent.c_str());
288 break;
289 case JAVA_TYPE_INT:
290 case JAVA_TYPE_ENUM:
291 fprintf(out, "%s buff[pos] = INT_TYPE;\n", indent.c_str());
292 fprintf(out, "%s copyInt(buff, pos + 1, arg%d);\n", indent.c_str(),
293 argIndex);
294 fprintf(out, "%s pos += INT_TYPE_SIZE;\n", indent.c_str());
295 break;
296 case JAVA_TYPE_FLOAT:
297 requiredHelpers |= JAVA_MODULE_REQUIRES_FLOAT;
298 fprintf(out, "%s buff[pos] = FLOAT_TYPE;\n", indent.c_str());
299 fprintf(out, "%s copyFloat(buff, pos + 1, arg%d);\n", indent.c_str(),
300 argIndex);
301 fprintf(out, "%s pos += FLOAT_TYPE_SIZE;\n", indent.c_str());
302 break;
303 case JAVA_TYPE_LONG:
304 fprintf(out, "%s buff[pos] = LONG_TYPE;\n", indent.c_str());
305 fprintf(out, "%s copyLong(buff, pos + 1, arg%d);\n", indent.c_str(),
306 argIndex);
307 fprintf(out, "%s pos += LONG_TYPE_SIZE;\n", indent.c_str());
308 break;
309 case JAVA_TYPE_STRING:
310 fprintf(out, "%s buff[pos] = STRING_TYPE;\n", indent.c_str());
311 fprintf(out, "%s copyInt(buff, pos + 1, arg%dBytes.length);\n",
312 indent.c_str(), argIndex);
313 fprintf(out,
314 "%s System.arraycopy("
315 "arg%dBytes, 0, buff, pos + STRING_TYPE_OVERHEAD, "
316 "arg%dBytes.length);\n",
317 indent.c_str(), argIndex, argIndex);
318 fprintf(out, "%s pos += STRING_TYPE_OVERHEAD + arg%dBytes.length;\n",
319 indent.c_str(), argIndex);
320 break;
321 case JAVA_TYPE_BYTE_ARRAY:
322 fprintf(out, "%s buff[pos] = STRING_TYPE;\n", indent.c_str());
323 fprintf(out, "%s copyInt(buff, pos + 1, arg%d.length);\n", indent.c_str(),
324 argIndex);
325 fprintf(out,
326 "%s System.arraycopy("
327 "arg%d, 0, buff, pos + STRING_TYPE_OVERHEAD, arg%d.length);\n",
328 indent.c_str(), argIndex, argIndex);
329 fprintf(out, "%s pos += STRING_TYPE_OVERHEAD + arg%d.length;\n",
330 indent.c_str(), argIndex);
331 break;
332 case JAVA_TYPE_ATTRIBUTION_CHAIN: {
333 requiredHelpers |= JAVA_MODULE_REQUIRES_ATTRIBUTION;
334 const char* uidName = attributionDecl.fields.front().name.c_str();
335 const char* tagName = attributionDecl.fields.back().name.c_str();
336
337 fprintf(out, "%s writeAttributionChain(buff, pos, %s, %s);\n",
338 indent.c_str(), uidName, tagName);
339 fprintf(out, "%s pos += attrSize;\n", indent.c_str());
340 break;
341 }
342 case JAVA_TYPE_KEY_VALUE_PAIR:
343 requiredHelpers |= JAVA_MODULE_REQUIRES_FLOAT;
344 requiredHelpers |= JAVA_MODULE_REQUIRES_KEY_VALUE_PAIRS;
345 fprintf(out,
346 "%s writeKeyValuePairs(buff, pos, (byte) count, intMap, "
347 "longMap, "
348 "stringMap, floatMap);\n",
349 indent.c_str());
350 fprintf(out, "%s pos += keyValuePairSize;\n", indent.c_str());
351 break;
352 default:
353 // Unsupported types: OBJECT, DOUBLE.
354 fprintf(stderr, "Object and Double are not supported in module logging");
355 return 1;
356 }
357 argIndex++;
358 }
359
360 fprintf(out, "%s StatsLog.writeRaw(buff, pos);\n", indent.c_str());
361 fprintf(out, "%s}\n", indent.c_str());
362 fprintf(out, "\n");
363 }
364
365 write_java_helpers_for_q_schema_methods(out, attributionDecl, requiredHelpers, indent);
366
367 return 0;
368 }
369
write_java_helpers_for_q_schema_methods(FILE * out,const AtomDecl & attributionDecl,const int requiredHelpers,const string & indent)370 void write_java_helpers_for_q_schema_methods(FILE* out, const AtomDecl& attributionDecl,
371 const int requiredHelpers, const string& indent) {
372 fprintf(out, "\n");
373 fprintf(out, "%s// Helper methods for copying primitives\n", indent.c_str());
374 fprintf(out, "%sprivate static void copyInt(byte[] buff, int pos, int val) {\n",
375 indent.c_str());
376 fprintf(out, "%s buff[pos] = (byte) (val);\n", indent.c_str());
377 fprintf(out, "%s buff[pos + 1] = (byte) (val >> 8);\n", indent.c_str());
378 fprintf(out, "%s buff[pos + 2] = (byte) (val >> 16);\n", indent.c_str());
379 fprintf(out, "%s buff[pos + 3] = (byte) (val >> 24);\n", indent.c_str());
380 fprintf(out, "%s return;\n", indent.c_str());
381 fprintf(out, "%s}\n", indent.c_str());
382 fprintf(out, "\n");
383
384 fprintf(out, "%sprivate static void copyLong(byte[] buff, int pos, long val) {\n",
385 indent.c_str());
386 fprintf(out, "%s buff[pos] = (byte) (val);\n", indent.c_str());
387 fprintf(out, "%s buff[pos + 1] = (byte) (val >> 8);\n", indent.c_str());
388 fprintf(out, "%s buff[pos + 2] = (byte) (val >> 16);\n", indent.c_str());
389 fprintf(out, "%s buff[pos + 3] = (byte) (val >> 24);\n", indent.c_str());
390 fprintf(out, "%s buff[pos + 4] = (byte) (val >> 32);\n", indent.c_str());
391 fprintf(out, "%s buff[pos + 5] = (byte) (val >> 40);\n", indent.c_str());
392 fprintf(out, "%s buff[pos + 6] = (byte) (val >> 48);\n", indent.c_str());
393 fprintf(out, "%s buff[pos + 7] = (byte) (val >> 56);\n", indent.c_str());
394 fprintf(out, "%s return;\n", indent.c_str());
395 fprintf(out, "%s}\n", indent.c_str());
396 fprintf(out, "\n");
397
398 if (requiredHelpers & JAVA_MODULE_REQUIRES_FLOAT) {
399 fprintf(out, "%sprivate static void copyFloat(byte[] buff, int pos, float val) {\n",
400 indent.c_str());
401 fprintf(out, "%s copyInt(buff, pos, Float.floatToIntBits(val));\n", indent.c_str());
402 fprintf(out, "%s return;\n", indent.c_str());
403 fprintf(out, "%s}\n", indent.c_str());
404 fprintf(out, "\n");
405 }
406
407 if (requiredHelpers & JAVA_MODULE_REQUIRES_ATTRIBUTION) {
408 fprintf(out, "%sprivate static void writeAttributionChain(byte[] buff, int pos",
409 indent.c_str());
410 for (const auto& chainField : attributionDecl.fields) {
411 fprintf(out, ", %s[] %s", java_type_name(chainField.javaType), chainField.name.c_str());
412 }
413 fprintf(out, ") {\n");
414
415 const char* uidName = attributionDecl.fields.front().name.c_str();
416 const char* tagName = attributionDecl.fields.back().name.c_str();
417
418 // Write the first list begin.
419 fprintf(out, "%s buff[pos] = LIST_TYPE;\n", indent.c_str());
420 fprintf(out, "%s buff[pos + 1] = (byte) (%s.length);\n", indent.c_str(), tagName);
421 fprintf(out, "%s pos += LIST_TYPE_OVERHEAD;\n", indent.c_str());
422
423 // Iterate through the attribution chain and write the nodes.
424 fprintf(out, "%s for (int i = 0; i < %s.length; i++) {\n", indent.c_str(), tagName);
425 // Write the list begin.
426 fprintf(out, "%s buff[pos] = LIST_TYPE;\n", indent.c_str());
427 fprintf(out, "%s buff[pos + 1] = %lu;\n", indent.c_str(),
428 attributionDecl.fields.size());
429 fprintf(out, "%s pos += LIST_TYPE_OVERHEAD;\n", indent.c_str());
430
431 // Write the uid.
432 fprintf(out, "%s buff[pos] = INT_TYPE;\n", indent.c_str());
433 fprintf(out, "%s copyInt(buff, pos + 1, %s[i]);\n", indent.c_str(), uidName);
434 fprintf(out, "%s pos += INT_TYPE_SIZE;\n", indent.c_str());
435
436 // Write the tag.
437 fprintf(out, "%s String %sStr = (%s[i] == null) ? \"\" : %s[i];\n", indent.c_str(),
438 tagName, tagName, tagName);
439 fprintf(out,
440 "%s byte[] %sByte = "
441 "%sStr.getBytes(java.nio.charset.StandardCharsets.UTF_8);\n",
442 indent.c_str(), tagName, tagName);
443 fprintf(out, "%s buff[pos] = STRING_TYPE;\n", indent.c_str());
444 fprintf(out, "%s copyInt(buff, pos + 1, %sByte.length);\n", indent.c_str(), tagName);
445 fprintf(out,
446 "%s System.arraycopy("
447 "%sByte, 0, buff, pos + STRING_TYPE_OVERHEAD, %sByte.length);\n",
448 indent.c_str(), tagName, tagName);
449 fprintf(out, "%s pos += STRING_TYPE_OVERHEAD + %sByte.length;\n", indent.c_str(),
450 tagName);
451 fprintf(out, "%s }\n", indent.c_str());
452 fprintf(out, "%s}\n", indent.c_str());
453 fprintf(out, "\n");
454 }
455
456 if (requiredHelpers & JAVA_MODULE_REQUIRES_KEY_VALUE_PAIRS) {
457 fprintf(out,
458 "%sprivate static void writeKeyValuePairs(byte[] buff, int pos, "
459 "byte numPairs,\n",
460 indent.c_str());
461 fprintf(out, "%s final android.util.SparseIntArray intMap,\n", indent.c_str());
462 fprintf(out, "%s final android.util.SparseLongArray longMap,\n", indent.c_str());
463 fprintf(out, "%s final android.util.SparseArray<String> stringMap,\n",
464 indent.c_str());
465 fprintf(out, "%s final android.util.SparseArray<Float> floatMap) {\n",
466 indent.c_str());
467
468 // Start list of lists.
469 fprintf(out, "%s buff[pos] = LIST_TYPE;\n", indent.c_str());
470 fprintf(out, "%s buff[pos + 1] = (byte) numPairs;\n", indent.c_str());
471 fprintf(out, "%s pos += LIST_TYPE_OVERHEAD;\n", indent.c_str());
472
473 // Write integers.
474 fprintf(out, "%s final int intMapSize = null == intMap ? 0 : intMap.size();\n",
475 indent.c_str());
476 fprintf(out, "%s for (int i = 0; i < intMapSize; i++) {\n", indent.c_str());
477 fprintf(out, "%s buff[pos] = LIST_TYPE;\n", indent.c_str());
478 fprintf(out, "%s buff[pos + 1] = (byte) 2;\n", indent.c_str());
479 fprintf(out, "%s pos += LIST_TYPE_OVERHEAD;\n", indent.c_str());
480 fprintf(out, "%s final int key = intMap.keyAt(i);\n", indent.c_str());
481 fprintf(out, "%s final int value = intMap.valueAt(i);\n", indent.c_str());
482 fprintf(out, "%s buff[pos] = INT_TYPE;\n", indent.c_str());
483 fprintf(out, "%s copyInt(buff, pos + 1, key);\n", indent.c_str());
484 fprintf(out, "%s pos += INT_TYPE_SIZE;\n", indent.c_str());
485 fprintf(out, "%s buff[pos] = INT_TYPE;\n", indent.c_str());
486 fprintf(out, "%s copyInt(buff, pos + 1, value);\n", indent.c_str());
487 fprintf(out, "%s pos += INT_TYPE_SIZE;\n", indent.c_str());
488 fprintf(out, "%s }\n", indent.c_str());
489
490 // Write longs.
491 fprintf(out, "%s final int longMapSize = null == longMap ? 0 : longMap.size();\n",
492 indent.c_str());
493 fprintf(out, "%s for (int i = 0; i < longMapSize; i++) {\n", indent.c_str());
494 fprintf(out, "%s buff[pos] = LIST_TYPE;\n", indent.c_str());
495 fprintf(out, "%s buff[pos + 1] = (byte) 2;\n", indent.c_str());
496 fprintf(out, "%s pos += LIST_TYPE_OVERHEAD;\n", indent.c_str());
497 fprintf(out, "%s final int key = longMap.keyAt(i);\n", indent.c_str());
498 fprintf(out, "%s final long value = longMap.valueAt(i);\n", indent.c_str());
499 fprintf(out, "%s buff[pos] = INT_TYPE;\n", indent.c_str());
500 fprintf(out, "%s copyInt(buff, pos + 1, key);\n", indent.c_str());
501 fprintf(out, "%s pos += INT_TYPE_SIZE;\n", indent.c_str());
502 fprintf(out, "%s buff[pos] = LONG_TYPE;\n", indent.c_str());
503 fprintf(out, "%s copyLong(buff, pos + 1, value);\n", indent.c_str());
504 fprintf(out, "%s pos += LONG_TYPE_SIZE;\n", indent.c_str());
505 fprintf(out, "%s }\n", indent.c_str());
506
507 // Write Strings.
508 fprintf(out,
509 "%s final int stringMapSize = null == stringMap ? 0 : "
510 "stringMap.size();\n",
511 indent.c_str());
512 fprintf(out, "%s for (int i = 0; i < stringMapSize; i++) {\n", indent.c_str());
513 fprintf(out, "%s buff[pos] = LIST_TYPE;\n", indent.c_str());
514 fprintf(out, "%s buff[pos + 1] = (byte) 2;\n", indent.c_str());
515 fprintf(out, "%s pos += LIST_TYPE_OVERHEAD;\n", indent.c_str());
516 fprintf(out, "%s final int key = stringMap.keyAt(i);\n", indent.c_str());
517 fprintf(out, "%s final String value = stringMap.valueAt(i);\n", indent.c_str());
518 fprintf(out,
519 "%s final byte[] valueBytes = "
520 "value.getBytes(java.nio.charset.StandardCharsets.UTF_8);\n",
521 indent.c_str());
522 fprintf(out, "%s buff[pos] = INT_TYPE;\n", indent.c_str());
523 fprintf(out, "%s copyInt(buff, pos + 1, key);\n", indent.c_str());
524 fprintf(out, "%s pos += INT_TYPE_SIZE;\n", indent.c_str());
525 fprintf(out, "%s buff[pos] = STRING_TYPE;\n", indent.c_str());
526 fprintf(out, "%s copyInt(buff, pos + 1, valueBytes.length);\n", indent.c_str());
527 fprintf(out,
528 "%s System.arraycopy("
529 "valueBytes, 0, buff, pos + STRING_TYPE_OVERHEAD, "
530 "valueBytes.length);\n",
531 indent.c_str());
532 fprintf(out, "%s pos += STRING_TYPE_OVERHEAD + valueBytes.length;\n",
533 indent.c_str());
534 fprintf(out, "%s }\n", indent.c_str());
535
536 // Write floats.
537 fprintf(out,
538 "%s final int floatMapSize = null == floatMap ? 0 : "
539 "floatMap.size();\n",
540 indent.c_str());
541 fprintf(out, "%s for (int i = 0; i < floatMapSize; i++) {\n", indent.c_str());
542 fprintf(out, "%s buff[pos] = LIST_TYPE;\n", indent.c_str());
543 fprintf(out, "%s buff[pos + 1] = (byte) 2;\n", indent.c_str());
544 fprintf(out, "%s pos += LIST_TYPE_OVERHEAD;\n", indent.c_str());
545 fprintf(out, "%s final int key = floatMap.keyAt(i);\n", indent.c_str());
546 fprintf(out, "%s final float value = floatMap.valueAt(i);\n", indent.c_str());
547 fprintf(out, "%s buff[pos] = INT_TYPE;\n", indent.c_str());
548 fprintf(out, "%s copyInt(buff, pos + 1, key);\n", indent.c_str());
549 fprintf(out, "%s pos += INT_TYPE_SIZE;\n", indent.c_str());
550 fprintf(out, "%s buff[pos] = FLOAT_TYPE;\n", indent.c_str());
551 fprintf(out, "%s copyFloat(buff, pos + 1, value);\n", indent.c_str());
552 fprintf(out, "%s pos += FLOAT_TYPE_SIZE;\n", indent.c_str());
553 fprintf(out, "%s }\n", indent.c_str());
554 fprintf(out, "%s}\n", indent.c_str());
555 fprintf(out, "\n");
556 }
557 }
558
559 } // namespace stats_log_api_gen
560 } // namespace android
561