1// Protocol Buffers - Google's data interchange format
2// Copyright 2008 Google Inc. All rights reserved.
3// https://developers.google.com/protocol-buffers/
4//
5// Redistribution and use in source and binary forms, with or without
6// modification, are permitted provided that the following conditions are
7// met:
8//
9// * Redistributions of source code must retain the above copyright
10// notice, this list of conditions and the following disclaimer.
11// * Redistributions in binary form must reproduce the above
12// copyright notice, this list of conditions and the following disclaimer
13// in the documentation and/or other materials provided with the
14// distribution.
15// * Neither the name of Google Inc. nor the names of its
16// contributors may be used to endorse or promote products derived from
17// this software without specific prior written permission.
18//
19// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30
31// Author: dweis@google.com (Daniel Weis)
32// Based on original Protocol Buffers design by
33// Sanjay Ghemawat, Jeff Dean, and others.
34
35#include <google/protobuf/compiler/java/message_builder.h>
36
37#include <algorithm>
38#include <map>
39#include <memory>
40#include <vector>
41
42#include <google/protobuf/io/coded_stream.h>
43#include <google/protobuf/io/printer.h>
44#include <google/protobuf/wire_format.h>
45#include <google/protobuf/stubs/strutil.h>
46#include <google/protobuf/stubs/substitute.h>
47#include <google/protobuf/compiler/java/context.h>
48#include <google/protobuf/compiler/java/doc_comment.h>
49#include <google/protobuf/compiler/java/enum.h>
50#include <google/protobuf/compiler/java/extension.h>
51#include <google/protobuf/compiler/java/generator_factory.h>
52#include <google/protobuf/compiler/java/helpers.h>
53#include <google/protobuf/compiler/java/name_resolver.h>
54#include <google/protobuf/descriptor.pb.h>
55
56// Must be last.
57#include <google/protobuf/port_def.inc>
58
59namespace google {
60namespace protobuf {
61namespace compiler {
62namespace java {
63
64namespace {
65std::string MapValueImmutableClassdName(const Descriptor* descriptor,
66 ClassNameResolver* name_resolver) {
67 const FieldDescriptor* value_field = descriptor->map_value();
68 GOOGLE_CHECK_EQ(FieldDescriptor::TYPE_MESSAGE, value_field->type());
69 return name_resolver->GetImmutableClassName(descriptor: value_field->message_type());
70}
71} // namespace
72
73MessageBuilderGenerator::MessageBuilderGenerator(const Descriptor* descriptor,
74 Context* context)
75 : descriptor_(descriptor),
76 context_(context),
77 name_resolver_(context->GetNameResolver()),
78 field_generators_(descriptor, context_) {
79 GOOGLE_CHECK(HasDescriptorMethods(descriptor->file(), context->EnforceLite()))
80 << "Generator factory error: A non-lite message generator is used to "
81 "generate lite messages.";
82 for (int i = 0; i < descriptor_->field_count(); i++) {
83 if (IsRealOneof(descriptor: descriptor_->field(index: i))) {
84 oneofs_.insert(x: descriptor_->field(index: i)->containing_oneof());
85 }
86 }
87}
88
89MessageBuilderGenerator::~MessageBuilderGenerator() {}
90
91void MessageBuilderGenerator::Generate(io::Printer* printer) {
92 WriteMessageDocComment(printer, message: descriptor_);
93 if (descriptor_->extension_range_count() > 0) {
94 printer->Print(
95 text: "public static final class Builder extends\n"
96 " com.google.protobuf.GeneratedMessage$ver$.ExtendableBuilder<\n"
97 " $classname$, Builder> implements\n"
98 " $extra_interfaces$\n"
99 " $classname$OrBuilder {\n",
100 args: "classname", args: name_resolver_->GetImmutableClassName(descriptor: descriptor_),
101 args: "extra_interfaces", args: ExtraBuilderInterfaces(descriptor: descriptor_), args: "ver",
102 args: GeneratedCodeVersionSuffix());
103 } else {
104 printer->Print(
105 text: "public static final class Builder extends\n"
106 " com.google.protobuf.GeneratedMessage$ver$.Builder<Builder> "
107 "implements\n"
108 " $extra_interfaces$\n"
109 " $classname$OrBuilder {\n",
110 args: "classname", args: name_resolver_->GetImmutableClassName(descriptor: descriptor_),
111 args: "extra_interfaces", args: ExtraBuilderInterfaces(descriptor: descriptor_), args: "ver",
112 args: GeneratedCodeVersionSuffix());
113 }
114 printer->Indent();
115
116 GenerateDescriptorMethods(printer);
117 GenerateCommonBuilderMethods(printer);
118
119 if (context_->HasGeneratedMethods(descriptor: descriptor_)) {
120 GenerateIsInitialized(printer);
121 GenerateBuilderParsingMethods(printer);
122 }
123
124 // oneof
125 std::map<std::string, std::string> vars;
126 for (auto oneof : oneofs_) {
127 vars["oneof_name"] = context_->GetOneofGeneratorInfo(oneof)->name;
128 vars["oneof_capitalized_name"] =
129 context_->GetOneofGeneratorInfo(oneof)->capitalized_name;
130 vars["oneof_index"] = StrCat(a: oneof->index());
131 // oneofCase_ and oneof_
132 printer->Print(variables: vars,
133 text: "private int $oneof_name$Case_ = 0;\n"
134 "private java.lang.Object $oneof_name$_;\n");
135 // oneofCase() and clearOneof()
136 printer->Print(variables: vars,
137 text: "public $oneof_capitalized_name$Case\n"
138 " get$oneof_capitalized_name$Case() {\n"
139 " return $oneof_capitalized_name$Case.forNumber(\n"
140 " $oneof_name$Case_);\n"
141 "}\n"
142 "\n"
143 "public Builder clear$oneof_capitalized_name$() {\n"
144 " $oneof_name$Case_ = 0;\n"
145 " $oneof_name$_ = null;\n");
146 printer->Print(text: " onChanged();\n");
147 printer->Print(
148 text: " return this;\n"
149 "}\n"
150 "\n");
151 }
152
153 // Integers for bit fields.
154 int totalBits = 0;
155 for (int i = 0; i < descriptor_->field_count(); i++) {
156 totalBits +=
157 field_generators_.get(field: descriptor_->field(index: i)).GetNumBitsForBuilder();
158 }
159 int totalInts = (totalBits + 31) / 32;
160 for (int i = 0; i < totalInts; i++) {
161 printer->Print(text: "private int $bit_field_name$;\n", args: "bit_field_name",
162 args: GetBitFieldName(index: i));
163 }
164
165 for (int i = 0; i < descriptor_->field_count(); i++) {
166 printer->Print(text: "\n");
167 field_generators_.get(field: descriptor_->field(index: i))
168 .GenerateBuilderMembers(printer);
169 }
170
171 // Override methods declared in GeneratedMessage to return the concrete
172 // generated type so callsites won't depend on GeneratedMessage. This
173 // is needed to keep binary compatibility when we change generated code
174 // to subclass a different GeneratedMessage class (e.g., in v3.0.0 release
175 // we changed all generated code to subclass GeneratedMessageV3).
176 printer->Print(
177 text: "@java.lang.Override\n"
178 "public final Builder setUnknownFields(\n"
179 " final com.google.protobuf.UnknownFieldSet unknownFields) {\n"
180 " return super.setUnknownFields(unknownFields);\n"
181 "}\n"
182 "\n"
183 "@java.lang.Override\n"
184 "public final Builder mergeUnknownFields(\n"
185 " final com.google.protobuf.UnknownFieldSet unknownFields) {\n"
186 " return super.mergeUnknownFields(unknownFields);\n"
187 "}\n"
188 "\n");
189
190 printer->Print(
191 text: "\n"
192 "// @@protoc_insertion_point(builder_scope:$full_name$)\n",
193 args: "full_name", args: descriptor_->full_name());
194
195 printer->Outdent();
196 printer->Print(text: "}\n");
197}
198
199// ===================================================================
200
201void MessageBuilderGenerator::GenerateDescriptorMethods(io::Printer* printer) {
202 if (!descriptor_->options().no_standard_descriptor_accessor()) {
203 printer->Print(
204 text: "public static final com.google.protobuf.Descriptors.Descriptor\n"
205 " getDescriptor() {\n"
206 " return $fileclass$.internal_$identifier$_descriptor;\n"
207 "}\n"
208 "\n",
209 args: "fileclass", args: name_resolver_->GetImmutableClassName(descriptor: descriptor_->file()),
210 args: "identifier", args: UniqueFileScopeIdentifier(descriptor: descriptor_));
211 }
212 std::vector<const FieldDescriptor*> map_fields;
213 for (int i = 0; i < descriptor_->field_count(); i++) {
214 const FieldDescriptor* field = descriptor_->field(index: i);
215 if (GetJavaType(field) == JAVATYPE_MESSAGE &&
216 IsMapEntry(descriptor: field->message_type())) {
217 map_fields.push_back(x: field);
218 }
219 }
220 if (!map_fields.empty()) {
221 printer->Print(
222 text: "@SuppressWarnings({\"rawtypes\"})\n"
223 "protected com.google.protobuf.MapField internalGetMapField(\n"
224 " int number) {\n"
225 " switch (number) {\n");
226 printer->Indent();
227 printer->Indent();
228 for (int i = 0; i < map_fields.size(); ++i) {
229 const FieldDescriptor* field = map_fields[i];
230 const FieldGeneratorInfo* info = context_->GetFieldGeneratorInfo(field);
231 printer->Print(
232 text: "case $number$:\n"
233 " return internalGet$capitalized_name$();\n",
234 args: "number", args: StrCat(a: field->number()), args: "capitalized_name",
235 args: info->capitalized_name);
236 }
237 printer->Print(
238 text: "default:\n"
239 " throw new RuntimeException(\n"
240 " \"Invalid map field number: \" + number);\n");
241 printer->Outdent();
242 printer->Outdent();
243 printer->Print(
244 text: " }\n"
245 "}\n");
246 printer->Print(
247 text: "@SuppressWarnings({\"rawtypes\"})\n"
248 "protected com.google.protobuf.MapField internalGetMutableMapField(\n"
249 " int number) {\n"
250 " switch (number) {\n");
251 printer->Indent();
252 printer->Indent();
253 for (int i = 0; i < map_fields.size(); ++i) {
254 const FieldDescriptor* field = map_fields[i];
255 const FieldGeneratorInfo* info = context_->GetFieldGeneratorInfo(field);
256 printer->Print(
257 text: "case $number$:\n"
258 " return internalGetMutable$capitalized_name$();\n",
259 args: "number", args: StrCat(a: field->number()), args: "capitalized_name",
260 args: info->capitalized_name);
261 }
262 printer->Print(
263 text: "default:\n"
264 " throw new RuntimeException(\n"
265 " \"Invalid map field number: \" + number);\n");
266 printer->Outdent();
267 printer->Outdent();
268 printer->Print(
269 text: " }\n"
270 "}\n");
271 }
272 printer->Print(
273 text: "@java.lang.Override\n"
274 "protected com.google.protobuf.GeneratedMessage$ver$.FieldAccessorTable\n"
275 " internalGetFieldAccessorTable() {\n"
276 " return $fileclass$.internal_$identifier$_fieldAccessorTable\n"
277 " .ensureFieldAccessorsInitialized(\n"
278 " $classname$.class, $classname$.Builder.class);\n"
279 "}\n"
280 "\n",
281 args: "classname", args: name_resolver_->GetImmutableClassName(descriptor: descriptor_),
282 args: "fileclass", args: name_resolver_->GetImmutableClassName(descriptor: descriptor_->file()),
283 args: "identifier", args: UniqueFileScopeIdentifier(descriptor: descriptor_), args: "ver",
284 args: GeneratedCodeVersionSuffix());
285}
286
287// ===================================================================
288
289void MessageBuilderGenerator::GenerateCommonBuilderMethods(
290 io::Printer* printer) {
291 printer->Print(
292 text: "// Construct using $classname$.newBuilder()\n"
293 "private Builder() {\n"
294 " maybeForceBuilderInitialization();\n"
295 "}\n"
296 "\n",
297 args: "classname", args: name_resolver_->GetImmutableClassName(descriptor: descriptor_));
298
299 printer->Print(
300 text: "private Builder(\n"
301 " com.google.protobuf.GeneratedMessage$ver$.BuilderParent parent) {\n"
302 " super(parent);\n"
303 " maybeForceBuilderInitialization();\n"
304 "}\n",
305 args: "classname", args: name_resolver_->GetImmutableClassName(descriptor: descriptor_), args: "ver",
306 args: GeneratedCodeVersionSuffix());
307
308 printer->Print(
309 text: "private void maybeForceBuilderInitialization() {\n"
310 " if (com.google.protobuf.GeneratedMessage$ver$\n"
311 " .alwaysUseFieldBuilders) {\n",
312 args: "ver", args: GeneratedCodeVersionSuffix());
313
314 printer->Indent();
315 printer->Indent();
316 for (int i = 0; i < descriptor_->field_count(); i++) {
317 if (!IsRealOneof(descriptor: descriptor_->field(index: i))) {
318 field_generators_.get(field: descriptor_->field(index: i))
319 .GenerateFieldBuilderInitializationCode(printer);
320 }
321 }
322 printer->Outdent();
323 printer->Outdent();
324
325 printer->Print(
326 text: " }\n"
327 "}\n");
328
329 printer->Print(
330 text: "@java.lang.Override\n"
331 "public Builder clear() {\n"
332 " super.clear();\n");
333
334 printer->Indent();
335
336 for (int i = 0; i < descriptor_->field_count(); i++) {
337 if (!IsRealOneof(descriptor: descriptor_->field(index: i))) {
338 field_generators_.get(field: descriptor_->field(index: i))
339 .GenerateBuilderClearCode(printer);
340 }
341 }
342
343 for (auto oneof : oneofs_) {
344 printer->Print(
345 text: "$oneof_name$Case_ = 0;\n"
346 "$oneof_name$_ = null;\n",
347 args: "oneof_name", args: context_->GetOneofGeneratorInfo(oneof)->name);
348 }
349
350 printer->Outdent();
351
352 printer->Print(
353 text: " return this;\n"
354 "}\n"
355 "\n");
356
357 printer->Print(
358 text: "@java.lang.Override\n"
359 "public com.google.protobuf.Descriptors.Descriptor\n"
360 " getDescriptorForType() {\n"
361 " return $fileclass$.internal_$identifier$_descriptor;\n"
362 "}\n"
363 "\n",
364 args: "fileclass", args: name_resolver_->GetImmutableClassName(descriptor: descriptor_->file()),
365 args: "identifier", args: UniqueFileScopeIdentifier(descriptor: descriptor_));
366
367 // LITE runtime implements this in GeneratedMessageLite.
368 printer->Print(
369 text: "@java.lang.Override\n"
370 "public $classname$ getDefaultInstanceForType() {\n"
371 " return $classname$.getDefaultInstance();\n"
372 "}\n"
373 "\n",
374 args: "classname", args: name_resolver_->GetImmutableClassName(descriptor: descriptor_));
375
376 printer->Print(
377 text: "@java.lang.Override\n"
378 "public $classname$ build() {\n"
379 " $classname$ result = buildPartial();\n"
380 " if (!result.isInitialized()) {\n"
381 " throw newUninitializedMessageException(result);\n"
382 " }\n"
383 " return result;\n"
384 "}\n"
385 "\n",
386 args: "classname", args: name_resolver_->GetImmutableClassName(descriptor: descriptor_));
387
388 printer->Print(
389 text: "@java.lang.Override\n"
390 "public $classname$ buildPartial() {\n"
391 " $classname$ result = new $classname$(this);\n",
392 args: "classname", args: name_resolver_->GetImmutableClassName(descriptor: descriptor_));
393
394 printer->Indent();
395
396 int totalBuilderBits = 0;
397 int totalMessageBits = 0;
398 for (int i = 0; i < descriptor_->field_count(); i++) {
399 const ImmutableFieldGenerator& field =
400 field_generators_.get(field: descriptor_->field(index: i));
401 totalBuilderBits += field.GetNumBitsForBuilder();
402 totalMessageBits += field.GetNumBitsForMessage();
403 }
404 int totalBuilderInts = (totalBuilderBits + 31) / 32;
405 int totalMessageInts = (totalMessageBits + 31) / 32;
406
407 // Local vars for from and to bit fields to avoid accessing the builder and
408 // message over and over for these fields. Seems to provide a slight
409 // perforamance improvement in micro benchmark and this is also what proto1
410 // code does.
411 for (int i = 0; i < totalBuilderInts; i++) {
412 printer->Print(text: "int from_$bit_field_name$ = $bit_field_name$;\n",
413 args: "bit_field_name", args: GetBitFieldName(index: i));
414 }
415 for (int i = 0; i < totalMessageInts; i++) {
416 printer->Print(text: "int to_$bit_field_name$ = 0;\n", args: "bit_field_name",
417 args: GetBitFieldName(index: i));
418 }
419
420 // Output generation code for each field.
421 for (int i = 0; i < descriptor_->field_count(); i++) {
422 field_generators_.get(field: descriptor_->field(index: i)).GenerateBuildingCode(printer);
423 }
424
425 // Copy the bit field results to the generated message
426 for (int i = 0; i < totalMessageInts; i++) {
427 printer->Print(text: "result.$bit_field_name$ = to_$bit_field_name$;\n",
428 args: "bit_field_name", args: GetBitFieldName(index: i));
429 }
430
431 for (auto oneof : oneofs_) {
432 printer->Print(text: "result.$oneof_name$Case_ = $oneof_name$Case_;\n",
433 args: "oneof_name", args: context_->GetOneofGeneratorInfo(oneof)->name);
434 }
435
436 printer->Outdent();
437
438 printer->Print(text: " onBuilt();\n");
439
440 printer->Print(
441 text: " return result;\n"
442 "}\n"
443 "\n",
444 args: "classname", args: name_resolver_->GetImmutableClassName(descriptor: descriptor_));
445
446 // Override methods declared in GeneratedMessage to return the concrete
447 // generated type so callsites won't depend on GeneratedMessage. This
448 // is needed to keep binary compatibility when we change generated code
449 // to subclass a different GeneratedMessage class (e.g., in v3.0.0 release
450 // we changed all generated code to subclass GeneratedMessageV3).
451 printer->Print(
452 text: "@java.lang.Override\n"
453 "public Builder clone() {\n"
454 " return super.clone();\n"
455 "}\n"
456 "@java.lang.Override\n"
457 "public Builder setField(\n"
458 " com.google.protobuf.Descriptors.FieldDescriptor field,\n"
459 " java.lang.Object value) {\n"
460 " return super.setField(field, value);\n"
461 "}\n"
462 "@java.lang.Override\n"
463 "public Builder clearField(\n"
464 " com.google.protobuf.Descriptors.FieldDescriptor field) {\n"
465 " return super.clearField(field);\n"
466 "}\n"
467 "@java.lang.Override\n"
468 "public Builder clearOneof(\n"
469 " com.google.protobuf.Descriptors.OneofDescriptor oneof) {\n"
470 " return super.clearOneof(oneof);\n"
471 "}\n"
472 "@java.lang.Override\n"
473 "public Builder setRepeatedField(\n"
474 " com.google.protobuf.Descriptors.FieldDescriptor field,\n"
475 " int index, java.lang.Object value) {\n"
476 " return super.setRepeatedField(field, index, value);\n"
477 "}\n"
478 "@java.lang.Override\n"
479 "public Builder addRepeatedField(\n"
480 " com.google.protobuf.Descriptors.FieldDescriptor field,\n"
481 " java.lang.Object value) {\n"
482 " return super.addRepeatedField(field, value);\n"
483 "}\n");
484
485 if (descriptor_->extension_range_count() > 0) {
486 printer->Print(
487 text: "@java.lang.Override\n"
488 "public <Type> Builder setExtension(\n"
489 " com.google.protobuf.GeneratedMessage.GeneratedExtension<\n"
490 " $classname$, Type> extension,\n"
491 " Type value) {\n"
492 " return super.setExtension(extension, value);\n"
493 "}\n"
494 "@java.lang.Override\n"
495 "public <Type> Builder setExtension(\n"
496 " com.google.protobuf.GeneratedMessage.GeneratedExtension<\n"
497 " $classname$, java.util.List<Type>> extension,\n"
498 " int index, Type value) {\n"
499 " return super.setExtension(extension, index, value);\n"
500 "}\n"
501 "@java.lang.Override\n"
502 "public <Type> Builder addExtension(\n"
503 " com.google.protobuf.GeneratedMessage.GeneratedExtension<\n"
504 " $classname$, java.util.List<Type>> extension,\n"
505 " Type value) {\n"
506 " return super.addExtension(extension, value);\n"
507 "}\n"
508 "@java.lang.Override\n"
509 "public <Type> Builder clearExtension(\n"
510 " com.google.protobuf.GeneratedMessage.GeneratedExtension<\n"
511 " $classname$, ?> extension) {\n"
512 " return super.clearExtension(extension);\n"
513 "}\n",
514 args: "classname", args: name_resolver_->GetImmutableClassName(descriptor: descriptor_));
515 }
516
517 // -----------------------------------------------------------------
518
519 if (context_->HasGeneratedMethods(descriptor: descriptor_)) {
520 printer->Print(
521 text: "@java.lang.Override\n"
522 "public Builder mergeFrom(com.google.protobuf.Message other) {\n"
523 " if (other instanceof $classname$) {\n"
524 " return mergeFrom(($classname$)other);\n"
525 " } else {\n"
526 " super.mergeFrom(other);\n"
527 " return this;\n"
528 " }\n"
529 "}\n"
530 "\n",
531 args: "classname", args: name_resolver_->GetImmutableClassName(descriptor: descriptor_));
532
533 printer->Print(
534 text: "public Builder mergeFrom($classname$ other) {\n"
535 // Optimization: If other is the default instance, we know none of its
536 // fields are set so we can skip the merge.
537 " if (other == $classname$.getDefaultInstance()) return this;\n",
538 args: "classname", args: name_resolver_->GetImmutableClassName(descriptor: descriptor_));
539 printer->Indent();
540
541 for (int i = 0; i < descriptor_->field_count(); i++) {
542 if (!IsRealOneof(descriptor: descriptor_->field(index: i))) {
543 field_generators_.get(field: descriptor_->field(index: i))
544 .GenerateMergingCode(printer);
545 }
546 }
547
548 // Merge oneof fields.
549 for (auto oneof : oneofs_) {
550 printer->Print(text: "switch (other.get$oneof_capitalized_name$Case()) {\n",
551 args: "oneof_capitalized_name",
552 args: context_->GetOneofGeneratorInfo(oneof)->capitalized_name);
553 printer->Indent();
554 for (int j = 0; j < oneof->field_count(); j++) {
555 const FieldDescriptor* field = oneof->field(index: j);
556 printer->Print(text: "case $field_name$: {\n", args: "field_name",
557 args: ToUpper(s: field->name()));
558 printer->Indent();
559 field_generators_.get(field).GenerateMergingCode(printer);
560 printer->Print(text: "break;\n");
561 printer->Outdent();
562 printer->Print(text: "}\n");
563 }
564 printer->Print(
565 text: "case $cap_oneof_name$_NOT_SET: {\n"
566 " break;\n"
567 "}\n",
568 args: "cap_oneof_name",
569 args: ToUpper(s: context_->GetOneofGeneratorInfo(oneof)->name));
570 printer->Outdent();
571 printer->Print(text: "}\n");
572 }
573
574 printer->Outdent();
575
576 // if message type has extensions
577 if (descriptor_->extension_range_count() > 0) {
578 printer->Print(text: " this.mergeExtensionFields(other);\n");
579 }
580
581 printer->Print(text: " this.mergeUnknownFields(other.unknownFields);\n");
582
583 printer->Print(text: " onChanged();\n");
584
585 printer->Print(
586 text: " return this;\n"
587 "}\n"
588 "\n");
589 }
590}
591
592// ===================================================================
593
594void MessageBuilderGenerator::GenerateBuilderParsingMethods(
595 io::Printer* printer) {
596 printer->Print(
597 text: "@java.lang.Override\n"
598 "public Builder mergeFrom(\n"
599 " com.google.protobuf.CodedInputStream input,\n"
600 " com.google.protobuf.ExtensionRegistryLite extensionRegistry)\n"
601 " throws java.io.IOException {\n"
602 " $classname$ parsedMessage = null;\n"
603 " try {\n"
604 " parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);\n"
605 " } catch (com.google.protobuf.InvalidProtocolBufferException e) {\n"
606 " parsedMessage = ($classname$) e.getUnfinishedMessage();\n"
607 " throw e.unwrapIOException();\n"
608 " } finally {\n"
609 " if (parsedMessage != null) {\n"
610 " mergeFrom(parsedMessage);\n"
611 " }\n"
612 " }\n"
613 " return this;\n"
614 "}\n",
615 args: "classname", args: name_resolver_->GetImmutableClassName(descriptor: descriptor_));
616}
617
618// ===================================================================
619
620void MessageBuilderGenerator::GenerateIsInitialized(io::Printer* printer) {
621 printer->Print(
622 text: "@java.lang.Override\n"
623 "public final boolean isInitialized() {\n");
624 printer->Indent();
625
626 // Check that all required fields in this message are set.
627 // TODO(kenton): We can optimize this when we switch to putting all the
628 // "has" fields into a single bitfield.
629 for (int i = 0; i < descriptor_->field_count(); i++) {
630 const FieldDescriptor* field = descriptor_->field(index: i);
631 const FieldGeneratorInfo* info = context_->GetFieldGeneratorInfo(field);
632
633 if (field->is_required()) {
634 printer->Print(
635 text: "if (!has$name$()) {\n"
636 " return false;\n"
637 "}\n",
638 args: "name", args: info->capitalized_name);
639 }
640 }
641
642 // Now check that all embedded messages are initialized.
643 for (int i = 0; i < descriptor_->field_count(); i++) {
644 const FieldDescriptor* field = descriptor_->field(index: i);
645 const FieldGeneratorInfo* info = context_->GetFieldGeneratorInfo(field);
646 if (GetJavaType(field) == JAVATYPE_MESSAGE &&
647 HasRequiredFields(descriptor: field->message_type())) {
648 switch (field->label()) {
649 case FieldDescriptor::LABEL_REQUIRED:
650 printer->Print(
651 text: "if (!get$name$().isInitialized()) {\n"
652 " return false;\n"
653 "}\n",
654 args: "type",
655 args: name_resolver_->GetImmutableClassName(descriptor: field->message_type()),
656 args: "name", args: info->capitalized_name);
657 break;
658 case FieldDescriptor::LABEL_OPTIONAL:
659 printer->Print(
660 text: "if (has$name$()) {\n"
661 " if (!get$name$().isInitialized()) {\n"
662 " return false;\n"
663 " }\n"
664 "}\n",
665 args: "name", args: info->capitalized_name);
666 break;
667 case FieldDescriptor::LABEL_REPEATED:
668 if (IsMapEntry(descriptor: field->message_type())) {
669 printer->Print(
670 text: "for ($type$ item : get$name$Map().values()) {\n"
671 " if (!item.isInitialized()) {\n"
672 " return false;\n"
673 " }\n"
674 "}\n",
675 args: "type",
676 args: MapValueImmutableClassdName(descriptor: field->message_type(),
677 name_resolver: name_resolver_),
678 args: "name", args: info->capitalized_name);
679 } else {
680 printer->Print(
681 text: "for (int i = 0; i < get$name$Count(); i++) {\n"
682 " if (!get$name$(i).isInitialized()) {\n"
683 " return false;\n"
684 " }\n"
685 "}\n",
686 args: "type",
687 args: name_resolver_->GetImmutableClassName(descriptor: field->message_type()),
688 args: "name", args: info->capitalized_name);
689 }
690 break;
691 }
692 }
693 }
694
695 if (descriptor_->extension_range_count() > 0) {
696 printer->Print(
697 text: "if (!extensionsAreInitialized()) {\n"
698 " return false;\n"
699 "}\n");
700 }
701
702 printer->Outdent();
703
704 printer->Print(
705 text: " return true;\n"
706 "}\n"
707 "\n");
708}
709
710// ===================================================================
711
712} // namespace java
713} // namespace compiler
714} // namespace protobuf
715} // namespace google
716
717#include <google/protobuf/port_undef.inc>
718