1 | /* |
2 | * Copyright 2014 Google Inc. All rights reserved. |
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 | // independent from idl_parser, since this code is not needed for most clients |
18 | |
19 | #include "flatbuffers/code_generators.h" |
20 | #include "flatbuffers/flatbuffers.h" |
21 | #include "flatbuffers/idl.h" |
22 | #include "flatbuffers/util.h" |
23 | |
24 | namespace flatbuffers { |
25 | namespace java { |
26 | |
27 | static TypedFloatConstantGenerator JavaFloatGen("Double." , "Float." , "NaN" , |
28 | "POSITIVE_INFINITY" , |
29 | "NEGATIVE_INFINITY" ); |
30 | |
31 | static CommentConfig = { |
32 | "/**" , |
33 | " *" , |
34 | " */" , |
35 | }; |
36 | |
37 | class JavaGenerator : public BaseGenerator { |
38 | struct FieldArrayLength { |
39 | std::string name; |
40 | int length; |
41 | }; |
42 | |
43 | public: |
44 | JavaGenerator(const Parser &parser, const std::string &path, |
45 | const std::string &file_name) |
46 | : BaseGenerator(parser, path, file_name, "" , "." , "java" ), |
47 | cur_name_space_(nullptr) {} |
48 | |
49 | JavaGenerator &operator=(const JavaGenerator &); |
50 | bool generate() { |
51 | std::string one_file_code; |
52 | cur_name_space_ = parser_.current_namespace_; |
53 | |
54 | for (auto it = parser_.enums_.vec.begin(); it != parser_.enums_.vec.end(); |
55 | ++it) { |
56 | std::string enumcode; |
57 | auto &enum_def = **it; |
58 | if (!parser_.opts.one_file) cur_name_space_ = enum_def.defined_namespace; |
59 | GenEnum(enum_def, &enumcode); |
60 | if (parser_.opts.one_file) { |
61 | one_file_code += enumcode; |
62 | } else { |
63 | if (!SaveType(enum_def.name, *enum_def.defined_namespace, enumcode, |
64 | /* needs_includes= */ false)) |
65 | return false; |
66 | } |
67 | |
68 | if (parser_.opts.generate_object_based_api && enum_def.is_union) { |
69 | enumcode = "" ; |
70 | GenEnum_ObjectAPI(enum_def, &enumcode, parser_.opts); |
71 | auto class_name = enum_def.name + "Union" ; |
72 | if (parser_.opts.one_file) { |
73 | one_file_code += enumcode; |
74 | } else { |
75 | if (!SaveType(class_name, *enum_def.defined_namespace, enumcode, |
76 | /* needs_includes= */ false)) |
77 | return false; |
78 | } |
79 | } |
80 | } |
81 | |
82 | for (auto it = parser_.structs_.vec.begin(); |
83 | it != parser_.structs_.vec.end(); ++it) { |
84 | std::string declcode; |
85 | auto &struct_def = **it; |
86 | if (!parser_.opts.one_file) |
87 | cur_name_space_ = struct_def.defined_namespace; |
88 | GenStruct(struct_def, &declcode, parser_.opts); |
89 | if (parser_.opts.one_file) { |
90 | one_file_code += declcode; |
91 | } else { |
92 | if (!SaveType(struct_def.name, *struct_def.defined_namespace, declcode, |
93 | /* needs_includes= */ true)) |
94 | return false; |
95 | } |
96 | |
97 | if (parser_.opts.generate_object_based_api) { |
98 | declcode = "" ; |
99 | GenStruct_ObjectAPI(struct_def, &declcode, parser_.opts); |
100 | auto class_name = GenTypeName_ObjectAPI(struct_def.name, parser_.opts); |
101 | if (parser_.opts.one_file) { |
102 | one_file_code += declcode; |
103 | } else { |
104 | if (!SaveType(class_name, *struct_def.defined_namespace, declcode, |
105 | /* needs_includes= */ true)) |
106 | return false; |
107 | } |
108 | } |
109 | } |
110 | |
111 | if (parser_.opts.one_file) { |
112 | return SaveType(file_name_, *parser_.current_namespace_, one_file_code, |
113 | /* needs_includes= */ true); |
114 | } |
115 | return true; |
116 | } |
117 | |
118 | // Save out the generated code for a single class while adding |
119 | // declaration boilerplate. |
120 | bool SaveType(const std::string &defname, const Namespace &ns, |
121 | const std::string &classcode, bool needs_includes) const { |
122 | if (!classcode.length()) return true; |
123 | |
124 | std::string code; |
125 | code = "// " + std::string(FlatBuffersGeneratedWarning()) + "\n\n" ; |
126 | |
127 | std::string namespace_name = FullNamespace("." , ns); |
128 | if (!namespace_name.empty()) { |
129 | code += "package " + namespace_name + ";" ; |
130 | code += "\n\n" ; |
131 | } |
132 | if (needs_includes) { |
133 | code += |
134 | "import java.nio.*;\nimport java.lang.*;\nimport " |
135 | "java.util.*;\nimport com.google.flatbuffers.*;\n" ; |
136 | if (parser_.opts.gen_nullable) { |
137 | code += "\nimport javax.annotation.Nullable;\n" ; |
138 | } |
139 | if (parser_.opts.java_checkerframework) { |
140 | code += "\nimport org.checkerframework.dataflow.qual.Pure;\n" ; |
141 | } |
142 | code += "\n" ; |
143 | } |
144 | |
145 | code += classcode; |
146 | if (!namespace_name.empty()) code += "" ; |
147 | auto filename = NamespaceDir(ns) + defname + ".java" ; |
148 | return SaveFile(filename.c_str(), code, false); |
149 | } |
150 | |
151 | const Namespace *CurrentNameSpace() const { return cur_name_space_; } |
152 | |
153 | std::string GenNullableAnnotation(const Type &t) const { |
154 | return parser_.opts.gen_nullable && |
155 | !IsScalar(DestinationType(t, true).base_type) && |
156 | t.base_type != BASE_TYPE_VECTOR |
157 | ? " @Nullable " |
158 | : "" ; |
159 | } |
160 | |
161 | std::string GenPureAnnotation(const Type &t) const { |
162 | return parser_.opts.java_checkerframework && |
163 | !IsScalar(DestinationType(t, true).base_type) |
164 | ? " @Pure " |
165 | : "" ; |
166 | } |
167 | |
168 | std::string GenTypeBasic(const Type &type) const { |
169 | // clang-format off |
170 | static const char * const java_typename[] = { |
171 | #define FLATBUFFERS_TD(ENUM, IDLTYPE, CTYPE, JTYPE, ...) \ |
172 | #JTYPE, |
173 | FLATBUFFERS_GEN_TYPES(FLATBUFFERS_TD) |
174 | #undef FLATBUFFERS_TD |
175 | }; |
176 | // clang-format on |
177 | return java_typename[type.base_type]; |
178 | } |
179 | |
180 | std::string GenTypePointer(const Type &type) const { |
181 | switch (type.base_type) { |
182 | case BASE_TYPE_STRING: return "String" ; |
183 | case BASE_TYPE_VECTOR: return GenTypeGet(type.VectorType()); |
184 | case BASE_TYPE_STRUCT: return WrapInNameSpace(*type.struct_def); |
185 | case BASE_TYPE_UNION: FLATBUFFERS_FALLTHROUGH(); // else fall thru |
186 | default: return "Table" ; |
187 | } |
188 | } |
189 | |
190 | std::string GenTypeGet(const Type &type) const { |
191 | return IsScalar(type.base_type) |
192 | ? GenTypeBasic(type) |
193 | : (IsArray(type) ? GenTypeGet(type.VectorType()) |
194 | : GenTypePointer(type)); |
195 | } |
196 | |
197 | // Find the destination type the user wants to receive the value in (e.g. |
198 | // one size higher signed types for unsigned serialized values in Java). |
199 | Type DestinationType(const Type &type, bool vectorelem) const { |
200 | switch (type.base_type) { |
201 | // We use int for both uchar/ushort, since that generally means less |
202 | // casting than using short for uchar. |
203 | case BASE_TYPE_UCHAR: return Type(BASE_TYPE_INT); |
204 | case BASE_TYPE_USHORT: return Type(BASE_TYPE_INT); |
205 | case BASE_TYPE_UINT: return Type(BASE_TYPE_LONG); |
206 | case BASE_TYPE_ARRAY: |
207 | case BASE_TYPE_VECTOR: |
208 | if (vectorelem) return DestinationType(type.VectorType(), vectorelem); |
209 | FLATBUFFERS_FALLTHROUGH(); // else fall thru |
210 | default: return type; |
211 | } |
212 | } |
213 | |
214 | std::string GenOffsetType() const { return "int" ; } |
215 | |
216 | std::string GenOffsetConstruct(const std::string &variable_name) const { |
217 | return variable_name; |
218 | } |
219 | |
220 | std::string GenVectorOffsetType() const { return "int" ; } |
221 | |
222 | // Generate destination type name |
223 | std::string GenTypeNameDest(const Type &type) const { |
224 | return GenTypeGet(DestinationType(type, true)); |
225 | } |
226 | |
227 | // Mask to turn serialized value into destination type value. |
228 | std::string DestinationMask(const Type &type, bool vectorelem) const { |
229 | switch (type.base_type) { |
230 | case BASE_TYPE_UCHAR: return " & 0xFF" ; |
231 | case BASE_TYPE_USHORT: return " & 0xFFFF" ; |
232 | case BASE_TYPE_UINT: return " & 0xFFFFFFFFL" ; |
233 | case BASE_TYPE_VECTOR: |
234 | if (vectorelem) return DestinationMask(type.VectorType(), vectorelem); |
235 | FLATBUFFERS_FALLTHROUGH(); // else fall thru |
236 | default: return "" ; |
237 | } |
238 | } |
239 | |
240 | // Casts necessary to correctly read serialized data |
241 | std::string DestinationCast(const Type &type) const { |
242 | if (IsSeries(type)) { |
243 | return DestinationCast(type.VectorType()); |
244 | } else { |
245 | // Cast necessary to correctly read serialized unsigned values. |
246 | if (type.base_type == BASE_TYPE_UINT) return "(long)" ; |
247 | } |
248 | return "" ; |
249 | } |
250 | |
251 | // Cast statements for mutator method parameters. |
252 | // In Java, parameters representing unsigned numbers need to be cast down to |
253 | // their respective type. For example, a long holding an unsigned int value |
254 | // would be cast down to int before being put onto the buffer. |
255 | std::string SourceCast(const Type &type, bool castFromDest) const { |
256 | if (IsSeries(type)) { |
257 | return SourceCast(type.VectorType(), castFromDest); |
258 | } else { |
259 | if (castFromDest) { |
260 | if (type.base_type == BASE_TYPE_UINT) |
261 | return "(int) " ; |
262 | else if (type.base_type == BASE_TYPE_USHORT) |
263 | return "(short) " ; |
264 | else if (type.base_type == BASE_TYPE_UCHAR) |
265 | return "(byte) " ; |
266 | } |
267 | } |
268 | return "" ; |
269 | } |
270 | |
271 | std::string SourceCast(const Type &type) const { |
272 | return SourceCast(type, true); |
273 | } |
274 | |
275 | std::string SourceCastBasic(const Type &type, bool castFromDest) const { |
276 | return IsScalar(type.base_type) ? SourceCast(type, castFromDest) : "" ; |
277 | } |
278 | |
279 | std::string SourceCastBasic(const Type &type) const { |
280 | return SourceCastBasic(type, true); |
281 | } |
282 | |
283 | std::string GenEnumDefaultValue(const FieldDef &field) const { |
284 | auto &value = field.value; |
285 | FLATBUFFERS_ASSERT(value.type.enum_def); |
286 | auto &enum_def = *value.type.enum_def; |
287 | auto enum_val = enum_def.FindByValue(value.constant); |
288 | return enum_val ? (WrapInNameSpace(enum_def) + "." + enum_val->name) |
289 | : value.constant; |
290 | } |
291 | |
292 | std::string GenDefaultValue(const FieldDef &field) const { |
293 | auto &value = field.value; |
294 | auto constant = field.IsScalarOptional() ? "0" : value.constant; |
295 | auto longSuffix = "L" ; |
296 | switch (value.type.base_type) { |
297 | case BASE_TYPE_BOOL: return constant == "0" ? "false" : "true" ; |
298 | case BASE_TYPE_ULONG: { |
299 | // Converts the ulong into its bits signed equivalent |
300 | uint64_t defaultValue = StringToUInt(constant.c_str()); |
301 | return NumToString(static_cast<int64_t>(defaultValue)) + longSuffix; |
302 | } |
303 | case BASE_TYPE_UINT: |
304 | case BASE_TYPE_LONG: return constant + longSuffix; |
305 | default: |
306 | if (IsFloat(value.type.base_type)) { |
307 | if (field.IsScalarOptional()) { |
308 | return value.type.base_type == BASE_TYPE_DOUBLE ? "0.0" : "0f" ; |
309 | } |
310 | return JavaFloatGen.GenFloatConstant(field); |
311 | } else { |
312 | return constant; |
313 | } |
314 | } |
315 | } |
316 | |
317 | std::string GenDefaultValueBasic(const FieldDef &field) const { |
318 | auto &value = field.value; |
319 | if (!IsScalar(value.type.base_type)) { return "0" ; } |
320 | return GenDefaultValue(field); |
321 | } |
322 | |
323 | void GenEnum(EnumDef &enum_def, std::string *code_ptr) const { |
324 | std::string &code = *code_ptr; |
325 | if (enum_def.generated) return; |
326 | |
327 | // Generate enum definitions of the form: |
328 | // public static (final) int name = value; |
329 | // In Java, we use ints rather than the Enum feature, because we want them |
330 | // to map directly to how they're used in C/C++ and file formats. |
331 | // That, and Java Enums are expensive, and not universally liked. |
332 | GenComment(enum_def.doc_comment, code_ptr, &comment_config); |
333 | |
334 | code += "@SuppressWarnings(\"unused\")\n" ; |
335 | if (enum_def.attributes.Lookup("private" )) { |
336 | // For Java, we leave the enum unmarked to indicate package-private |
337 | } else { |
338 | code += "public " ; |
339 | } |
340 | code += "final class " + enum_def.name; |
341 | code += " {\n" ; |
342 | code += " private " + enum_def.name + "() { }\n" ; |
343 | for (auto it = enum_def.Vals().begin(); it != enum_def.Vals().end(); ++it) { |
344 | auto &ev = **it; |
345 | GenComment(ev.doc_comment, code_ptr, &comment_config, " " ); |
346 | code += " public static final " ; |
347 | code += GenTypeBasic(DestinationType(enum_def.underlying_type, false)); |
348 | code += " " ; |
349 | code += ev.name + " = " ; |
350 | code += enum_def.ToString(ev); |
351 | code += ";\n" ; |
352 | } |
353 | |
354 | // Generate a string table for enum values. |
355 | // Problem is, if values are very sparse that could generate really big |
356 | // tables. Ideally in that case we generate a map lookup instead, but for |
357 | // the moment we simply don't output a table at all. |
358 | auto range = enum_def.Distance(); |
359 | // Average distance between values above which we consider a table |
360 | // "too sparse". Change at will. |
361 | static const uint64_t kMaxSparseness = 5; |
362 | if (range / static_cast<uint64_t>(enum_def.size()) < kMaxSparseness && |
363 | GenTypeBasic(DestinationType(enum_def.underlying_type, false)) != |
364 | "long" ) { |
365 | code += "\n public static final String" ; |
366 | code += "[] names = { " ; |
367 | auto val = enum_def.Vals().front(); |
368 | for (auto it = enum_def.Vals().begin(); it != enum_def.Vals().end(); |
369 | ++it) { |
370 | auto ev = *it; |
371 | for (auto k = enum_def.Distance(val, ev); k > 1; --k) code += "\"\", " ; |
372 | val = ev; |
373 | code += "\"" + (*it)->name + "\", " ; |
374 | } |
375 | code += "};\n\n" ; |
376 | code += " public static " ; |
377 | code += "String" ; |
378 | code += " " + MakeCamel("name" , false); |
379 | code += "(int e) { return names[e" ; |
380 | if (enum_def.MinValue()->IsNonZero()) |
381 | code += " - " + enum_def.MinValue()->name; |
382 | code += "]; }\n" ; |
383 | } |
384 | |
385 | // Close the class |
386 | code += "}\n\n" ; |
387 | } |
388 | |
389 | // Returns the function name that is able to read a value of the given type. |
390 | std::string GenGetter(const Type &type) const { |
391 | switch (type.base_type) { |
392 | case BASE_TYPE_STRING: return "__string" ; |
393 | case BASE_TYPE_STRUCT: return "__struct" ; |
394 | case BASE_TYPE_UNION: return "__union" ; |
395 | case BASE_TYPE_VECTOR: return GenGetter(type.VectorType()); |
396 | case BASE_TYPE_ARRAY: return GenGetter(type.VectorType()); |
397 | default: { |
398 | std::string getter = "bb.get" ; |
399 | if (type.base_type == BASE_TYPE_BOOL) { |
400 | getter = "0!=" + getter; |
401 | } else if (GenTypeBasic(type) != "byte" ) { |
402 | getter += MakeCamel(GenTypeBasic(type)); |
403 | } |
404 | return getter; |
405 | } |
406 | } |
407 | } |
408 | |
409 | // Returns the function name that is able to read a value of the given type. |
410 | std::string GenGetterForLookupByKey(flatbuffers::FieldDef *key_field, |
411 | const std::string &data_buffer, |
412 | const char *num = nullptr) const { |
413 | auto type = key_field->value.type; |
414 | auto dest_mask = DestinationMask(type, true); |
415 | auto dest_cast = DestinationCast(type); |
416 | auto getter = data_buffer + ".get" ; |
417 | if (GenTypeBasic(type) != "byte" ) { |
418 | getter += MakeCamel(GenTypeBasic(type)); |
419 | } |
420 | getter = dest_cast + getter + "(" + GenOffsetGetter(key_field, num) + ")" + |
421 | dest_mask; |
422 | return getter; |
423 | } |
424 | |
425 | // Direct mutation is only allowed for scalar fields. |
426 | // Hence a setter method will only be generated for such fields. |
427 | std::string GenSetter(const Type &type) const { |
428 | if (IsScalar(type.base_type)) { |
429 | std::string setter = "bb.put" ; |
430 | if (GenTypeBasic(type) != "byte" && type.base_type != BASE_TYPE_BOOL) { |
431 | setter += MakeCamel(GenTypeBasic(type)); |
432 | } |
433 | return setter; |
434 | } else { |
435 | return "" ; |
436 | } |
437 | } |
438 | |
439 | // Returns the method name for use with add/put calls. |
440 | std::string GenMethod(const Type &type) const { |
441 | return IsScalar(type.base_type) ? MakeCamel(GenTypeBasic(type)) |
442 | : (IsStruct(type) ? "Struct" : "Offset" ); |
443 | } |
444 | |
445 | // Recursively generate arguments for a constructor, to deal with nested |
446 | // structs. |
447 | void GenStructArgs(const StructDef &struct_def, std::string *code_ptr, |
448 | const char *nameprefix, size_t array_count = 0) const { |
449 | std::string &code = *code_ptr; |
450 | for (auto it = struct_def.fields.vec.begin(); |
451 | it != struct_def.fields.vec.end(); ++it) { |
452 | auto &field = **it; |
453 | const auto &field_type = field.value.type; |
454 | const auto array_field = IsArray(field_type); |
455 | const auto &type = array_field ? field_type.VectorType() |
456 | : DestinationType(field_type, false); |
457 | const auto array_cnt = array_field ? (array_count + 1) : array_count; |
458 | if (IsStruct(type)) { |
459 | // Generate arguments for a struct inside a struct. To ensure names |
460 | // don't clash, and to make it obvious these arguments are constructing |
461 | // a nested struct, prefix the name with the field name. |
462 | GenStructArgs(*field_type.struct_def, code_ptr, |
463 | (nameprefix + (field.name + "_" )).c_str(), array_cnt); |
464 | } else { |
465 | code += ", " ; |
466 | code += GenTypeNameDest(field.value.type); |
467 | for (size_t i = 0; i < array_cnt; i++) code += "[]" ; |
468 | code += " " ; |
469 | code += nameprefix; |
470 | code += MakeCamel(field.name, false); |
471 | } |
472 | } |
473 | } |
474 | |
475 | // Recusively generate struct construction statements of the form: |
476 | // builder.putType(name); |
477 | // and insert manual padding. |
478 | void GenStructBody(const StructDef &struct_def, std::string *code_ptr, |
479 | const char *nameprefix, size_t index = 0, |
480 | bool in_array = false) const { |
481 | std::string &code = *code_ptr; |
482 | std::string indent((index + 1) * 2, ' '); |
483 | code += indent + " builder.prep(" ; |
484 | code += NumToString(struct_def.minalign) + ", " ; |
485 | code += NumToString(struct_def.bytesize) + ");\n" ; |
486 | for (auto it = struct_def.fields.vec.rbegin(); |
487 | it != struct_def.fields.vec.rend(); ++it) { |
488 | auto &field = **it; |
489 | const auto &field_type = field.value.type; |
490 | if (field.padding) { |
491 | code += indent + " builder.pad(" ; |
492 | code += NumToString(field.padding) + ");\n" ; |
493 | } |
494 | if (IsStruct(field_type)) { |
495 | GenStructBody(*field_type.struct_def, code_ptr, |
496 | (nameprefix + (field.name + "_" )).c_str(), index, |
497 | in_array); |
498 | } else { |
499 | const auto &type = |
500 | IsArray(field_type) ? field_type.VectorType() : field_type; |
501 | const auto index_var = "_idx" + NumToString(index); |
502 | if (IsArray(field_type)) { |
503 | code += indent + " for (int " + index_var + " = " ; |
504 | code += NumToString(field_type.fixed_length); |
505 | code += "; " + index_var + " > 0; " + index_var + "--) {\n" ; |
506 | in_array = true; |
507 | } |
508 | if (IsStruct(type)) { |
509 | GenStructBody(*field_type.struct_def, code_ptr, |
510 | (nameprefix + (field.name + "_" )).c_str(), index + 1, |
511 | in_array); |
512 | } else { |
513 | code += IsArray(field_type) ? " " : "" ; |
514 | code += indent + " builder.put" ; |
515 | code += GenMethod(type) + "(" ; |
516 | code += SourceCast(type); |
517 | auto argname = nameprefix + MakeCamel(field.name, false); |
518 | code += argname; |
519 | size_t array_cnt = index + (IsArray(field_type) ? 1 : 0); |
520 | for (size_t i = 0; in_array && i < array_cnt; i++) { |
521 | code += "[_idx" + NumToString(i) + "-1]" ; |
522 | } |
523 | code += ");\n" ; |
524 | } |
525 | if (IsArray(field_type)) { code += indent + " }\n" ; } |
526 | } |
527 | } |
528 | } |
529 | |
530 | std::string GenByteBufferLength(const char *bb_name) const { |
531 | std::string bb_len = bb_name; |
532 | bb_len += ".capacity()" ; |
533 | return bb_len; |
534 | } |
535 | |
536 | std::string GenOffsetGetter(flatbuffers::FieldDef *key_field, |
537 | const char *num = nullptr) const { |
538 | std::string key_offset = "" ; |
539 | key_offset += "__offset(" + NumToString(key_field->value.offset) + ", " ; |
540 | if (num) { |
541 | key_offset += num; |
542 | key_offset += ", _bb)" ; |
543 | } else { |
544 | key_offset += GenByteBufferLength("bb" ); |
545 | key_offset += " - tableOffset, bb)" ; |
546 | } |
547 | return key_offset; |
548 | } |
549 | |
550 | std::string GenLookupKeyGetter(flatbuffers::FieldDef *key_field) const { |
551 | std::string key_getter = " " ; |
552 | key_getter += "int tableOffset = " ; |
553 | key_getter += "__indirect(vectorLocation + 4 * (start + middle)" ; |
554 | key_getter += ", bb);\n " ; |
555 | if (IsString(key_field->value.type)) { |
556 | key_getter += "int comp = " ; |
557 | key_getter += "compareStrings(" ; |
558 | key_getter += GenOffsetGetter(key_field); |
559 | key_getter += ", byteKey, bb);\n" ; |
560 | } else { |
561 | auto get_val = GenGetterForLookupByKey(key_field, "bb" ); |
562 | key_getter += GenTypeNameDest(key_field->value.type) + " val = " ; |
563 | key_getter += get_val + ";\n" ; |
564 | key_getter += " int comp = val > key ? 1 : val < key ? -1 : 0;\n" ; |
565 | } |
566 | return key_getter; |
567 | } |
568 | |
569 | std::string GenKeyGetter(flatbuffers::FieldDef *key_field) const { |
570 | std::string key_getter = "" ; |
571 | auto data_buffer = "_bb" ; |
572 | if (IsString(key_field->value.type)) { |
573 | key_getter += " return " ; |
574 | key_getter += "" ; |
575 | key_getter += "compareStrings(" ; |
576 | key_getter += GenOffsetGetter(key_field, "o1" ) + ", " ; |
577 | key_getter += GenOffsetGetter(key_field, "o2" ) + ", " + data_buffer + ")" ; |
578 | key_getter += ";" ; |
579 | } else { |
580 | auto field_getter = GenGetterForLookupByKey(key_field, data_buffer, "o1" ); |
581 | key_getter += |
582 | "\n " + GenTypeNameDest(key_field->value.type) + " val_1 = " ; |
583 | key_getter += |
584 | field_getter + ";\n " + GenTypeNameDest(key_field->value.type); |
585 | key_getter += " val_2 = " ; |
586 | field_getter = GenGetterForLookupByKey(key_field, data_buffer, "o2" ); |
587 | key_getter += field_getter + ";\n" ; |
588 | key_getter += " return val_1 > val_2 ? 1 : val_1 < val_2 ? -1 : 0;\n " ; |
589 | } |
590 | return key_getter; |
591 | } |
592 | |
593 | void GenStruct(StructDef &struct_def, std::string *code_ptr, |
594 | const IDLOptions &opts) const { |
595 | if (struct_def.generated) return; |
596 | std::string &code = *code_ptr; |
597 | |
598 | // Generate a struct accessor class, with methods of the form: |
599 | // public type name() { return bb.getType(i + offset); } |
600 | // or for tables of the form: |
601 | // public type name() { |
602 | // int o = __offset(offset); return o != 0 ? bb.getType(o + i) : default; |
603 | // } |
604 | GenComment(struct_def.doc_comment, code_ptr, &comment_config); |
605 | |
606 | if (parser_.opts.gen_generated) { |
607 | code += "@javax.annotation.Generated(value=\"flatc\")\n" ; |
608 | } |
609 | code += "@SuppressWarnings(\"unused\")\n" ; |
610 | if (struct_def.attributes.Lookup("private" )) { |
611 | // For Java, we leave the struct unmarked to indicate package-private |
612 | } else { |
613 | code += "public " ; |
614 | } |
615 | code += "final class " + struct_def.name; |
616 | code += " extends " ; |
617 | code += struct_def.fixed ? "Struct" : "Table" ; |
618 | code += " {\n" ; |
619 | |
620 | if (!struct_def.fixed) { |
621 | // Generate verson check method. |
622 | // Force compile time error if not using the same version runtime. |
623 | code += " public static void ValidateVersion() {" ; |
624 | code += " Constants." ; |
625 | code += "FLATBUFFERS_2_0_0(); " ; |
626 | code += "}\n" ; |
627 | |
628 | // Generate a special accessor for the table that when used as the root |
629 | // of a FlatBuffer |
630 | std::string method_name = "getRootAs" + struct_def.name; |
631 | std::string method_signature = |
632 | " public static " + struct_def.name + " " + method_name; |
633 | |
634 | // create convenience method that doesn't require an existing object |
635 | code += method_signature + "(ByteBuffer _bb) " ; |
636 | code += "{ return " + method_name + "(_bb, new " + struct_def.name + |
637 | "()); }\n" ; |
638 | |
639 | // create method that allows object reuse |
640 | code += |
641 | method_signature + "(ByteBuffer _bb, " + struct_def.name + " obj) { " ; |
642 | code += "_bb.order(ByteOrder.LITTLE_ENDIAN); " ; |
643 | code += "return (obj.__assign(_bb.getInt(_bb." ; |
644 | code += "position()" ; |
645 | code += ") + _bb." ; |
646 | code += "position()" ; |
647 | code += ", _bb)); }\n" ; |
648 | if (parser_.root_struct_def_ == &struct_def) { |
649 | if (parser_.file_identifier_.length()) { |
650 | // Check if a buffer has the identifier. |
651 | code += " public static " ; |
652 | code += "boolean " + struct_def.name; |
653 | code += "BufferHasIdentifier(ByteBuffer _bb) { return " ; |
654 | code += "__has_identifier(_bb, \"" ; |
655 | code += parser_.file_identifier_; |
656 | code += "\"); }\n" ; |
657 | } |
658 | } |
659 | } |
660 | // Generate the __init method that sets the field in a pre-existing |
661 | // accessor object. This is to allow object reuse. |
662 | code += " public void __init(int _i, ByteBuffer _bb) " ; |
663 | code += "{ " ; |
664 | code += "__reset(_i, _bb); " ; |
665 | code += "}\n" ; |
666 | code += |
667 | " public " + struct_def.name + " __assign(int _i, ByteBuffer _bb) " ; |
668 | code += "{ __init(_i, _bb); return this; }\n\n" ; |
669 | for (auto it = struct_def.fields.vec.begin(); |
670 | it != struct_def.fields.vec.end(); ++it) { |
671 | auto &field = **it; |
672 | if (field.deprecated) continue; |
673 | GenComment(field.doc_comment, code_ptr, &comment_config, " " ); |
674 | std::string type_name = GenTypeGet(field.value.type); |
675 | std::string type_name_dest = GenTypeNameDest(field.value.type); |
676 | std::string conditional_cast = "" ; |
677 | std::string optional = "" ; |
678 | std::string dest_mask = DestinationMask(field.value.type, true); |
679 | std::string dest_cast = DestinationCast(field.value.type); |
680 | std::string src_cast = SourceCast(field.value.type); |
681 | std::string method_start = |
682 | " public " + |
683 | (field.IsRequired() ? "" : GenNullableAnnotation(field.value.type)) + |
684 | GenPureAnnotation(field.value.type) + type_name_dest + optional + |
685 | " " + MakeCamel(field.name, false); |
686 | std::string obj = "obj" ; |
687 | |
688 | // Most field accessors need to retrieve and test the field offset first, |
689 | // this is the prefix code for that: |
690 | auto offset_prefix = |
691 | IsArray(field.value.type) |
692 | ? " { return " |
693 | : (" { int o = __offset(" + NumToString(field.value.offset) + |
694 | "); return o != 0 ? " ); |
695 | // Generate the accessors that don't do object reuse. |
696 | if (field.value.type.base_type == BASE_TYPE_STRUCT) { |
697 | // Calls the accessor that takes an accessor object with a new object. |
698 | code += method_start + "() { return " ; |
699 | code += MakeCamel(field.name, false); |
700 | code += "(new " ; |
701 | code += type_name + "()); }\n" ; |
702 | } else if (IsSeries(field.value.type) && |
703 | field.value.type.element == BASE_TYPE_STRUCT) { |
704 | // Accessors for vectors of structs also take accessor objects, this |
705 | // generates a variant without that argument. |
706 | code += method_start + "(int j) { return " ; |
707 | code += MakeCamel(field.name, false); |
708 | code += "(new " + type_name + "(), j); }\n" ; |
709 | } |
710 | |
711 | if (field.IsScalarOptional()) { code += GenOptionalScalarCheck(field); } |
712 | std::string getter = dest_cast + GenGetter(field.value.type); |
713 | code += method_start; |
714 | std::string default_cast = "" ; |
715 | std::string member_suffix = "; " ; |
716 | if (IsScalar(field.value.type.base_type)) { |
717 | code += "()" ; |
718 | member_suffix += "" ; |
719 | if (struct_def.fixed) { |
720 | code += " { return " + getter; |
721 | code += "(bb_pos + " ; |
722 | code += NumToString(field.value.offset) + ")" ; |
723 | code += dest_mask; |
724 | } else { |
725 | code += offset_prefix + getter; |
726 | code += "(o + bb_pos)" + dest_mask; |
727 | code += " : " + default_cast; |
728 | code += GenDefaultValue(field); |
729 | } |
730 | } else { |
731 | switch (field.value.type.base_type) { |
732 | case BASE_TYPE_STRUCT: |
733 | code += "(" + type_name + " obj)" ; |
734 | if (struct_def.fixed) { |
735 | code += " { return " + obj + ".__assign(" ; |
736 | code += "bb_pos + " + NumToString(field.value.offset) + ", " ; |
737 | code += "bb)" ; |
738 | } else { |
739 | code += offset_prefix + conditional_cast; |
740 | code += obj + ".__assign(" ; |
741 | code += field.value.type.struct_def->fixed |
742 | ? "o + bb_pos" |
743 | : "__indirect(o + bb_pos)" ; |
744 | code += ", bb) : null" ; |
745 | } |
746 | break; |
747 | case BASE_TYPE_STRING: |
748 | code += "()" ; |
749 | member_suffix += "" ; |
750 | code += offset_prefix + getter + "(o + " ; |
751 | code += "bb_pos) : null" ; |
752 | break; |
753 | case BASE_TYPE_ARRAY: FLATBUFFERS_FALLTHROUGH(); // fall thru |
754 | case BASE_TYPE_VECTOR: { |
755 | auto vectortype = field.value.type.VectorType(); |
756 | code += "(" ; |
757 | if (vectortype.base_type == BASE_TYPE_STRUCT) { |
758 | code += type_name + " obj, " ; |
759 | getter = obj + ".__assign" ; |
760 | } else if (vectortype.base_type == BASE_TYPE_UNION) { |
761 | code += type_name + " obj, " ; |
762 | } |
763 | code += "int j)" ; |
764 | const auto body = offset_prefix + conditional_cast + getter + "(" ; |
765 | if (vectortype.base_type == BASE_TYPE_UNION) { |
766 | code += body + "obj, " ; |
767 | } else { |
768 | code += body; |
769 | } |
770 | std::string index; |
771 | if (IsArray(field.value.type)) { |
772 | index += "bb_pos + " + NumToString(field.value.offset) + " + " ; |
773 | } else { |
774 | index += "__vector(o) + " ; |
775 | } |
776 | index += "j * " + NumToString(InlineSize(vectortype)); |
777 | if (vectortype.base_type == BASE_TYPE_STRUCT) { |
778 | code += vectortype.struct_def->fixed |
779 | ? index |
780 | : "__indirect(" + index + ")" ; |
781 | code += ", bb" ; |
782 | } else { |
783 | code += index; |
784 | } |
785 | code += ")" + dest_mask; |
786 | if (!IsArray(field.value.type)) { |
787 | code += " : " ; |
788 | code += |
789 | field.value.type.element == BASE_TYPE_BOOL |
790 | ? "false" |
791 | : (IsScalar(field.value.type.element) ? default_cast + "0" |
792 | : "null" ); |
793 | } |
794 | |
795 | break; |
796 | } |
797 | case BASE_TYPE_UNION: |
798 | code += "(" + type_name + " obj)" + offset_prefix + getter; |
799 | code += "(obj, o + bb_pos) : null" ; |
800 | break; |
801 | default: FLATBUFFERS_ASSERT(0); |
802 | } |
803 | } |
804 | code += member_suffix; |
805 | code += "}\n" ; |
806 | if (IsVector(field.value.type)) { |
807 | code += " public int " + MakeCamel(field.name, false); |
808 | code += "Length" ; |
809 | code += "()" ; |
810 | code += offset_prefix; |
811 | code += "__vector_len(o) : 0; " ; |
812 | code += "" ; |
813 | code += "}\n" ; |
814 | // See if we should generate a by-key accessor. |
815 | if (field.value.type.element == BASE_TYPE_STRUCT && |
816 | !field.value.type.struct_def->fixed) { |
817 | auto &sd = *field.value.type.struct_def; |
818 | auto &fields = sd.fields.vec; |
819 | for (auto kit = fields.begin(); kit != fields.end(); ++kit) { |
820 | auto &key_field = **kit; |
821 | if (key_field.key) { |
822 | auto qualified_name = WrapInNameSpace(sd); |
823 | code += " public " + qualified_name + " " ; |
824 | code += MakeCamel(field.name, false) + "ByKey(" ; |
825 | code += GenTypeNameDest(key_field.value.type) + " key)" ; |
826 | code += offset_prefix; |
827 | code += qualified_name + ".__lookup_by_key(" ; |
828 | code += "null, " ; |
829 | code += "__vector(o), key, " ; |
830 | code += "bb) : null; " ; |
831 | code += "}\n" ; |
832 | code += " public " + qualified_name + " " ; |
833 | code += MakeCamel(field.name, false) + "ByKey(" ; |
834 | code += qualified_name + " obj, " ; |
835 | code += GenTypeNameDest(key_field.value.type) + " key)" ; |
836 | code += offset_prefix; |
837 | code += qualified_name + ".__lookup_by_key(obj, " ; |
838 | code += "__vector(o), key, " ; |
839 | code += "bb) : null; " ; |
840 | code += "}\n" ; |
841 | break; |
842 | } |
843 | } |
844 | } |
845 | } |
846 | // Generate the accessors for vector of structs with vector access object |
847 | if (IsVector(field.value.type)) { |
848 | std::string vector_type_name; |
849 | const auto &element_base_type = field.value.type.VectorType().base_type; |
850 | if (IsScalar(element_base_type)) { |
851 | vector_type_name = MakeCamel(type_name, true) + "Vector" ; |
852 | } else if (element_base_type == BASE_TYPE_STRING) { |
853 | vector_type_name = "StringVector" ; |
854 | } else if (element_base_type == BASE_TYPE_UNION) { |
855 | vector_type_name = "UnionVector" ; |
856 | } else { |
857 | vector_type_name = type_name + ".Vector" ; |
858 | } |
859 | auto vector_method_start = GenNullableAnnotation(field.value.type) + |
860 | " public " + vector_type_name + optional + |
861 | " " + MakeCamel(field.name, false) + |
862 | "Vector" ; |
863 | code += vector_method_start + "() { return " ; |
864 | code += MakeCamel(field.name, false) + "Vector" ; |
865 | code += "(new " + vector_type_name + "()); }\n" ; |
866 | code += vector_method_start + "(" + vector_type_name + " obj)" ; |
867 | code += offset_prefix + conditional_cast + obj + ".__assign(" ; |
868 | code += "__vector(o), " ; |
869 | if (!IsScalar(element_base_type)) { |
870 | auto vectortype = field.value.type.VectorType(); |
871 | code += NumToString(InlineSize(vectortype)) + ", " ; |
872 | } |
873 | code += "bb) : null" + member_suffix + "}\n" ; |
874 | } |
875 | // Generate a ByteBuffer accessor for strings & vectors of scalars. |
876 | if ((IsVector(field.value.type) && |
877 | IsScalar(field.value.type.VectorType().base_type)) || |
878 | IsString(field.value.type)) { |
879 | code += " public ByteBuffer " ; |
880 | code += MakeCamel(field.name, false); |
881 | code += "AsByteBuffer() { return " ; |
882 | code += "__vector_as_bytebuffer(" ; |
883 | code += NumToString(field.value.offset) + ", " ; |
884 | code += NumToString(IsString(field.value.type) |
885 | ? 1 |
886 | : InlineSize(field.value.type.VectorType())); |
887 | code += "); }\n" ; |
888 | code += " public ByteBuffer " ; |
889 | code += MakeCamel(field.name, false); |
890 | code += "InByteBuffer(ByteBuffer _bb) { return " ; |
891 | code += "__vector_in_bytebuffer(_bb, " ; |
892 | code += NumToString(field.value.offset) + ", " ; |
893 | code += NumToString(IsString(field.value.type) |
894 | ? 1 |
895 | : InlineSize(field.value.type.VectorType())); |
896 | code += "); }\n" ; |
897 | } |
898 | // generate object accessors if is nested_flatbuffer |
899 | if (field.nested_flatbuffer) { |
900 | auto nested_type_name = WrapInNameSpace(*field.nested_flatbuffer); |
901 | auto nested_method_name = |
902 | MakeCamel(field.name, false) + "As" + field.nested_flatbuffer->name; |
903 | auto get_nested_method_name = nested_method_name; |
904 | code += " public " + nested_type_name + " " ; |
905 | code += nested_method_name + "() { return " ; |
906 | code += |
907 | get_nested_method_name + "(new " + nested_type_name + "()); }\n" ; |
908 | code += " public " + nested_type_name + " " ; |
909 | code += get_nested_method_name + "(" ; |
910 | code += nested_type_name + " obj" ; |
911 | code += ") { int o = __offset(" ; |
912 | code += NumToString(field.value.offset) + "); " ; |
913 | code += "return o != 0 ? " + conditional_cast + obj + ".__assign(" ; |
914 | code += "" ; |
915 | code += "__indirect(__vector(o)), " ; |
916 | code += "bb) : null; }\n" ; |
917 | } |
918 | // Generate mutators for scalar fields or vectors of scalars. |
919 | if (parser_.opts.mutable_buffer) { |
920 | auto is_series = (IsSeries(field.value.type)); |
921 | const auto &underlying_type = |
922 | is_series ? field.value.type.VectorType() : field.value.type; |
923 | // Boolean parameters have to be explicitly converted to byte |
924 | // representation. |
925 | auto setter_parameter = underlying_type.base_type == BASE_TYPE_BOOL |
926 | ? "(byte)(" + field.name + " ? 1 : 0)" |
927 | : field.name; |
928 | auto mutator_prefix = MakeCamel("mutate" , false); |
929 | // A vector mutator also needs the index of the vector element it should |
930 | // mutate. |
931 | auto mutator_params = (is_series ? "(int j, " : "(" ) + |
932 | GenTypeNameDest(underlying_type) + " " + |
933 | field.name + ") { " ; |
934 | auto setter_index = |
935 | is_series |
936 | ? (IsArray(field.value.type) |
937 | ? "bb_pos + " + NumToString(field.value.offset) |
938 | : "__vector(o)" ) + |
939 | +" + j * " + NumToString(InlineSize(underlying_type)) |
940 | : (struct_def.fixed |
941 | ? "bb_pos + " + NumToString(field.value.offset) |
942 | : "o + bb_pos" ); |
943 | if (IsScalar(underlying_type.base_type) && !IsUnion(field.value.type)) { |
944 | code += " public " ; |
945 | code += struct_def.fixed ? "void " : "boolean " ; |
946 | code += mutator_prefix + MakeCamel(field.name, true); |
947 | code += mutator_params; |
948 | if (struct_def.fixed) { |
949 | code += GenSetter(underlying_type) + "(" + setter_index + ", " ; |
950 | code += src_cast + setter_parameter + "); }\n" ; |
951 | } else { |
952 | code += "int o = __offset(" ; |
953 | code += NumToString(field.value.offset) + ");" ; |
954 | code += " if (o != 0) { " + GenSetter(underlying_type); |
955 | code += "(" + setter_index + ", " + src_cast + setter_parameter + |
956 | "); return true; } else { return false; } }\n" ; |
957 | } |
958 | } |
959 | } |
960 | if (parser_.opts.java_primitive_has_method && |
961 | IsScalar(field.value.type.base_type) && !struct_def.fixed) { |
962 | auto vt_offset_constant = " public static final int VT_" + |
963 | MakeScreamingCamel(field.name) + " = " + |
964 | NumToString(field.value.offset) + ";" ; |
965 | |
966 | code += vt_offset_constant; |
967 | code += "\n" ; |
968 | } |
969 | } |
970 | code += "\n" ; |
971 | auto struct_has_create = false; |
972 | std::set<flatbuffers::FieldDef *> field_has_create_set; |
973 | flatbuffers::FieldDef *key_field = nullptr; |
974 | if (struct_def.fixed) { |
975 | struct_has_create = true; |
976 | // create a struct constructor function |
977 | code += " public static " + GenOffsetType() + " " ; |
978 | code += "create" ; |
979 | code += struct_def.name + "(FlatBufferBuilder builder" ; |
980 | GenStructArgs(struct_def, code_ptr, "" ); |
981 | code += ") {\n" ; |
982 | GenStructBody(struct_def, code_ptr, "" ); |
983 | code += " return " ; |
984 | code += GenOffsetConstruct("builder." + std::string("offset()" )); |
985 | code += ";\n }\n" ; |
986 | } else { |
987 | // Generate a method that creates a table in one go. This is only possible |
988 | // when the table has no struct fields, since those have to be created |
989 | // inline, and there's no way to do so in Java. |
990 | bool has_no_struct_fields = true; |
991 | int num_fields = 0; |
992 | for (auto it = struct_def.fields.vec.begin(); |
993 | it != struct_def.fields.vec.end(); ++it) { |
994 | auto &field = **it; |
995 | if (field.deprecated) continue; |
996 | if (IsStruct(field.value.type)) { |
997 | has_no_struct_fields = false; |
998 | } else { |
999 | num_fields++; |
1000 | } |
1001 | } |
1002 | // JVM specifications restrict default constructor params to be < 255. |
1003 | // Longs and doubles take up 2 units, so we set the limit to be < 127. |
1004 | if (has_no_struct_fields && num_fields && num_fields < 127) { |
1005 | struct_has_create = true; |
1006 | // Generate a table constructor of the form: |
1007 | // public static int createName(FlatBufferBuilder builder, args...) |
1008 | code += " public static " + GenOffsetType() + " " ; |
1009 | code += "create" + struct_def.name; |
1010 | code += "(FlatBufferBuilder builder" ; |
1011 | for (auto it = struct_def.fields.vec.begin(); |
1012 | it != struct_def.fields.vec.end(); ++it) { |
1013 | auto &field = **it; |
1014 | auto field_name = MakeCamel(field.name, false); |
1015 | if (field.deprecated) continue; |
1016 | code += ",\n " ; |
1017 | code += GenTypeBasic(DestinationType(field.value.type, false)); |
1018 | code += " " ; |
1019 | code += field_name; |
1020 | if (!IsScalar(field.value.type.base_type)) code += "Offset" ; |
1021 | } |
1022 | code += ") {\n builder." ; |
1023 | code += "startTable(" ; |
1024 | code += NumToString(struct_def.fields.vec.size()) + ");\n" ; |
1025 | for (size_t size = struct_def.sortbysize ? sizeof(largest_scalar_t) : 1; |
1026 | size; size /= 2) { |
1027 | for (auto it = struct_def.fields.vec.rbegin(); |
1028 | it != struct_def.fields.vec.rend(); ++it) { |
1029 | auto &field = **it; |
1030 | auto field_name = MakeCamel(field.name, false); |
1031 | auto method_name = MakeCamel(field.name, true); |
1032 | if (!field.deprecated && |
1033 | (!struct_def.sortbysize || |
1034 | size == SizeOf(field.value.type.base_type))) { |
1035 | code += " " + struct_def.name + "." ; |
1036 | code += "add" ; |
1037 | code += method_name + "(builder, " + field_name; |
1038 | if (!IsScalar(field.value.type.base_type)) code += "Offset" ; |
1039 | code += ");\n" ; |
1040 | } |
1041 | } |
1042 | } |
1043 | code += " return " + struct_def.name + "." ; |
1044 | code += "end" + struct_def.name; |
1045 | code += "(builder);\n }\n\n" ; |
1046 | } |
1047 | // Generate a set of static methods that allow table construction, |
1048 | // of the form: |
1049 | // public static void addName(FlatBufferBuilder builder, short name) |
1050 | // { builder.addShort(id, name, default); } |
1051 | // Unlike the Create function, these always work. |
1052 | code += " public static void start" ; |
1053 | code += struct_def.name; |
1054 | code += "(FlatBufferBuilder builder) { builder." ; |
1055 | code += "startTable(" ; |
1056 | code += NumToString(struct_def.fields.vec.size()) + "); }\n" ; |
1057 | for (auto it = struct_def.fields.vec.begin(); |
1058 | it != struct_def.fields.vec.end(); ++it) { |
1059 | auto &field = **it; |
1060 | if (field.deprecated) continue; |
1061 | if (field.key) key_field = &field; |
1062 | code += " public static void add" ; |
1063 | code += MakeCamel(field.name); |
1064 | code += "(FlatBufferBuilder builder, " ; |
1065 | code += GenTypeBasic(DestinationType(field.value.type, false)); |
1066 | auto argname = MakeCamel(field.name, false); |
1067 | if (!IsScalar(field.value.type.base_type)) argname += "Offset" ; |
1068 | code += " " + argname + ") { builder.add" ; |
1069 | code += GenMethod(field.value.type) + "(" ; |
1070 | code += NumToString(it - struct_def.fields.vec.begin()) + ", " ; |
1071 | code += SourceCastBasic(field.value.type); |
1072 | code += argname; |
1073 | code += ", " ; |
1074 | code += SourceCastBasic(field.value.type); |
1075 | code += GenDefaultValue(field); |
1076 | code += "); }\n" ; |
1077 | if (IsVector(field.value.type)) { |
1078 | auto vector_type = field.value.type.VectorType(); |
1079 | auto alignment = InlineAlignment(vector_type); |
1080 | auto elem_size = InlineSize(vector_type); |
1081 | if (!IsStruct(vector_type)) { |
1082 | field_has_create_set.insert(&field); |
1083 | // generate a method to create a vector from a java array. |
1084 | if ((vector_type.base_type == BASE_TYPE_CHAR || |
1085 | vector_type.base_type == BASE_TYPE_UCHAR)) { |
1086 | // Handle byte[] and ByteBuffers separately for Java |
1087 | code += " public static " + GenVectorOffsetType() + " " ; |
1088 | code += "create" ; |
1089 | code += MakeCamel(field.name); |
1090 | code += "Vector(FlatBufferBuilder builder, byte[] data) " ; |
1091 | code += "{ return builder.createByteVector(data); }\n" ; |
1092 | |
1093 | code += " public static " + GenVectorOffsetType() + " " ; |
1094 | code += "create" ; |
1095 | code += MakeCamel(field.name); |
1096 | code += "Vector(FlatBufferBuilder builder, ByteBuffer data) " ; |
1097 | code += "{ return builder.createByteVector(data); }\n" ; |
1098 | } else { |
1099 | code += " public static " + GenVectorOffsetType() + " " ; |
1100 | code += "create" ; |
1101 | code += MakeCamel(field.name); |
1102 | code += "Vector(FlatBufferBuilder builder, " ; |
1103 | code += GenTypeBasic(DestinationType(vector_type, false)) + |
1104 | "[] data) " ; |
1105 | code += "{ builder.startVector(" ; |
1106 | code += NumToString(elem_size); |
1107 | code += ", data.length, " ; |
1108 | code += NumToString(alignment); |
1109 | code += "); for (int i = data." ; |
1110 | code += "length - 1; i >= 0; i--) builder." ; |
1111 | code += "add" ; |
1112 | code += GenMethod(vector_type); |
1113 | code += "(" ; |
1114 | code += SourceCastBasic(vector_type); |
1115 | code += "data[i]" ; |
1116 | code += "); return " ; |
1117 | code += "builder.endVector(); }\n" ; |
1118 | } |
1119 | } |
1120 | // Generate a method to start a vector, data to be added manually |
1121 | // after. |
1122 | code += " public static void start" ; |
1123 | code += MakeCamel(field.name); |
1124 | code += "Vector(FlatBufferBuilder builder, int numElems) " ; |
1125 | code += "{ builder.startVector(" ; |
1126 | code += NumToString(elem_size); |
1127 | code += ", numElems, " + NumToString(alignment); |
1128 | code += "); }\n" ; |
1129 | } |
1130 | } |
1131 | code += " public static " + GenOffsetType() + " " ; |
1132 | code += "end" + struct_def.name; |
1133 | code += "(FlatBufferBuilder builder) {\n int o = builder." ; |
1134 | code += "endTable();\n" ; |
1135 | for (auto it = struct_def.fields.vec.begin(); |
1136 | it != struct_def.fields.vec.end(); ++it) { |
1137 | auto &field = **it; |
1138 | if (!field.deprecated && field.IsRequired()) { |
1139 | code += " builder.required(o, " ; |
1140 | code += NumToString(field.value.offset); |
1141 | code += "); // " + field.name + "\n" ; |
1142 | } |
1143 | } |
1144 | code += " return " + GenOffsetConstruct("o" ) + ";\n }\n" ; |
1145 | if (parser_.root_struct_def_ == &struct_def) { |
1146 | std::string size_prefix[] = { "" , "SizePrefixed" }; |
1147 | for (int i = 0; i < 2; ++i) { |
1148 | code += " public static void " ; |
1149 | code += "finish" + size_prefix[i] + struct_def.name; |
1150 | code += "Buffer(FlatBufferBuilder builder, " + GenOffsetType(); |
1151 | code += " offset) {" ; |
1152 | code += " builder.finish" + size_prefix[i] + "(offset" ; |
1153 | |
1154 | if (parser_.file_identifier_.length()) |
1155 | code += ", \"" + parser_.file_identifier_ + "\"" ; |
1156 | code += "); }\n" ; |
1157 | } |
1158 | } |
1159 | } |
1160 | // Only generate key compare function for table, |
1161 | // because `key_field` is not set for struct |
1162 | if (struct_def.has_key && !struct_def.fixed) { |
1163 | FLATBUFFERS_ASSERT(key_field); |
1164 | code += "\n @Override\n protected int keysCompare(" ; |
1165 | code += "Integer o1, Integer o2, ByteBuffer _bb) {" ; |
1166 | code += GenKeyGetter(key_field); |
1167 | code += " }\n" ; |
1168 | |
1169 | code += "\n public static " + struct_def.name; |
1170 | code += " __lookup_by_key(" ; |
1171 | code += struct_def.name + " obj, " ; |
1172 | code += "int vectorLocation, " ; |
1173 | code += GenTypeNameDest(key_field->value.type); |
1174 | code += " key, ByteBuffer bb) {\n" ; |
1175 | if (IsString(key_field->value.type)) { |
1176 | code += " byte[] byteKey = " ; |
1177 | code += "key.getBytes(java.nio.charset.StandardCharsets.UTF_8);\n" ; |
1178 | } |
1179 | code += " int span = " ; |
1180 | code += "bb.getInt(vectorLocation - 4);\n" ; |
1181 | code += " int start = 0;\n" ; |
1182 | code += " while (span != 0) {\n" ; |
1183 | code += " int middle = span / 2;\n" ; |
1184 | code += GenLookupKeyGetter(key_field); |
1185 | code += " if (comp > 0) {\n" ; |
1186 | code += " span = middle;\n" ; |
1187 | code += " } else if (comp < 0) {\n" ; |
1188 | code += " middle++;\n" ; |
1189 | code += " start += middle;\n" ; |
1190 | code += " span -= middle;\n" ; |
1191 | code += " } else {\n" ; |
1192 | code += " return " ; |
1193 | code += "(obj == null ? new " + struct_def.name + "() : obj)" ; |
1194 | code += ".__assign(tableOffset, bb);\n" ; |
1195 | code += " }\n }\n" ; |
1196 | code += " return null;\n" ; |
1197 | code += " }\n" ; |
1198 | } |
1199 | GenVectorAccessObject(struct_def, code_ptr); |
1200 | if (opts.generate_object_based_api) { |
1201 | GenPackUnPack_ObjectAPI(struct_def, code_ptr, opts, struct_has_create, |
1202 | field_has_create_set); |
1203 | } |
1204 | code += "}\n\n" ; |
1205 | } |
1206 | |
1207 | std::string GenOptionalScalarCheck(FieldDef &field) const { |
1208 | if (!field.IsScalarOptional()) return "" ; |
1209 | return " public boolean has" + MakeCamel(field.name, true) + |
1210 | "() { return 0 != __offset(" + NumToString(field.value.offset) + |
1211 | "); }\n" ; |
1212 | } |
1213 | |
1214 | void GenVectorAccessObject(StructDef &struct_def, |
1215 | std::string *code_ptr) const { |
1216 | auto &code = *code_ptr; |
1217 | // Generate a vector of structs accessor class. |
1218 | code += "\n" ; |
1219 | code += " " ; |
1220 | if (!struct_def.attributes.Lookup("private" )) code += "public " ; |
1221 | code += "static " ; |
1222 | code += "final " ; |
1223 | code += "class Vector extends " ; |
1224 | code += "BaseVector {\n" ; |
1225 | |
1226 | // Generate the __assign method that sets the field in a pre-existing |
1227 | // accessor object. This is to allow object reuse. |
1228 | std::string method_indent = " " ; |
1229 | code += method_indent + "public Vector " ; |
1230 | code += "__assign(int _vector, int _element_size, ByteBuffer _bb) { " ; |
1231 | code += "__reset(_vector, _element_size, _bb); return this; }\n\n" ; |
1232 | |
1233 | auto type_name = struct_def.name; |
1234 | auto method_start = method_indent + "public " + type_name + " get" ; |
1235 | // Generate the accessors that don't do object reuse. |
1236 | code += method_start + "(int j) { return get" ; |
1237 | code += "(new " + type_name + "(), j); }\n" ; |
1238 | code += method_start + "(" + type_name + " obj, int j) { " ; |
1239 | code += " return obj.__assign(" ; |
1240 | std::string index = "__element(j)" ; |
1241 | code += struct_def.fixed ? index : "__indirect(" + index + ", bb)" ; |
1242 | code += ", bb); }\n" ; |
1243 | // See if we should generate a by-key accessor. |
1244 | if (!struct_def.fixed) { |
1245 | auto &fields = struct_def.fields.vec; |
1246 | for (auto kit = fields.begin(); kit != fields.end(); ++kit) { |
1247 | auto &key_field = **kit; |
1248 | if (key_field.key) { |
1249 | auto nullable_annotation = |
1250 | parser_.opts.gen_nullable ? "@Nullable " : "" ; |
1251 | code += method_indent + nullable_annotation; |
1252 | code += "public " + type_name + " " ; |
1253 | code += "getByKey(" ; |
1254 | code += GenTypeNameDest(key_field.value.type) + " key) { " ; |
1255 | code += " return __lookup_by_key(null, " ; |
1256 | code += "__vector(), key, " ; |
1257 | code += "bb); " ; |
1258 | code += "}\n" ; |
1259 | code += method_indent + nullable_annotation; |
1260 | code += "public " + type_name + " " ; |
1261 | code += "getByKey(" ; |
1262 | code += type_name + " obj, " ; |
1263 | code += GenTypeNameDest(key_field.value.type) + " key) { " ; |
1264 | code += " return __lookup_by_key(obj, " ; |
1265 | code += "__vector(), key, " ; |
1266 | code += "bb); " ; |
1267 | code += "}\n" ; |
1268 | break; |
1269 | } |
1270 | } |
1271 | } |
1272 | code += " }\n" ; |
1273 | } |
1274 | |
1275 | std::string GenGetterFuncName_ObjectAPI(const std::string &field_name) const { |
1276 | return "get" + MakeCamel(field_name, true); |
1277 | } |
1278 | |
1279 | void GenEnum_ObjectAPI(EnumDef &enum_def, std::string *code_ptr, |
1280 | const IDLOptions &opts) const { |
1281 | auto &code = *code_ptr; |
1282 | if (enum_def.generated) return; |
1283 | code += "import com.google.flatbuffers.FlatBufferBuilder;\n\n" ; |
1284 | |
1285 | if (!enum_def.attributes.Lookup("private" )) { code += "public " ; } |
1286 | auto union_name = enum_def.name + "Union" ; |
1287 | auto union_type = |
1288 | GenTypeBasic(DestinationType(enum_def.underlying_type, false)); |
1289 | code += "class " + union_name + " {\n" ; |
1290 | // Type |
1291 | code += " private " + union_type + " type;\n" ; |
1292 | // Value |
1293 | code += " private Object value;\n" ; |
1294 | code += "\n" ; |
1295 | // getters and setters |
1296 | code += " public " + union_type + " getType() { return type; }\n\n" ; |
1297 | code += " public void setType(" + union_type + |
1298 | " type) { this.type = type; }\n\n" ; |
1299 | code += " public Object getValue() { return value; }\n\n" ; |
1300 | code += " public void setValue(Object value) { this.value = value; }\n\n" ; |
1301 | // Constructor |
1302 | code += " public " + union_name + "() {\n" ; |
1303 | code += " this.type = " + enum_def.name + "." + |
1304 | enum_def.Vals()[0]->name + ";\n" ; |
1305 | code += " this.value = null;\n" ; |
1306 | code += " }\n\n" ; |
1307 | // As |
1308 | for (auto it = enum_def.Vals().begin(); it != enum_def.Vals().end(); ++it) { |
1309 | auto &ev = **it; |
1310 | if (ev.union_type.base_type == BASE_TYPE_NONE) continue; |
1311 | auto type_name = GenTypeGet_ObjectAPI(ev.union_type, opts, false, true); |
1312 | if (ev.union_type.base_type == BASE_TYPE_STRUCT && |
1313 | ev.union_type.struct_def->attributes.Lookup("private" )) { |
1314 | code += " " ; |
1315 | } else { |
1316 | code += " public " ; |
1317 | } |
1318 | code += type_name + " as" + ev.name + "() { return (" + type_name + |
1319 | ") value; }\n" ; |
1320 | } |
1321 | code += "\n" ; |
1322 | // pack() |
1323 | code += " public static int pack(FlatBufferBuilder builder, " + |
1324 | union_name + " _o) {\n" ; |
1325 | code += " switch (_o.type) {\n" ; |
1326 | for (auto it = enum_def.Vals().begin(); it != enum_def.Vals().end(); ++it) { |
1327 | auto &ev = **it; |
1328 | if (ev.union_type.base_type == BASE_TYPE_NONE) { |
1329 | continue; |
1330 | } else { |
1331 | code += " case " + enum_def.name + "." + ev.name + ": return " ; |
1332 | if (IsString(ev.union_type)) { |
1333 | code += "builder.createString(_o.as" + ev.name + "());\n" ; |
1334 | } else { |
1335 | code += GenTypeGet(ev.union_type) + ".pack(builder, _o.as" + ev.name + |
1336 | "());\n" ; |
1337 | } |
1338 | } |
1339 | } |
1340 | code += " default: return 0;\n" ; |
1341 | code += " }\n" ; |
1342 | code += " }\n" ; |
1343 | code += "}\n\n" ; |
1344 | } |
1345 | |
1346 | std::string GenSetterFuncName_ObjectAPI(const std::string &field_name) const { |
1347 | return "set" + MakeCamel(field_name, true); |
1348 | } |
1349 | |
1350 | std::string GenTypeName_ObjectAPI(const std::string &name, |
1351 | const IDLOptions &opts) const { |
1352 | return opts.object_prefix + name + opts.object_suffix; |
1353 | } |
1354 | |
1355 | void GenUnionUnPack_ObjectAPI(const EnumDef &enum_def, std::string *code_ptr, |
1356 | const std::string &type_name, |
1357 | const std::string &camel_name, |
1358 | bool is_vector) const { |
1359 | auto &code = *code_ptr; |
1360 | |
1361 | std::string variable_type = type_name; |
1362 | std::string variable_name = "_o" + MakeCamel(camel_name, true); |
1363 | std::string type_params = "" ; |
1364 | std::string value_params = "" ; |
1365 | std::string func_suffix = "()" ; |
1366 | std::string indent = " " ; |
1367 | if (is_vector) { |
1368 | variable_type = type_name.substr(0, type_name.length() - 2); |
1369 | variable_name += "Element" ; |
1370 | type_params = "_j" ; |
1371 | value_params = ", _j" ; |
1372 | func_suffix = "(_j)" ; |
1373 | indent = " " ; |
1374 | } |
1375 | code += indent + variable_type + " " + variable_name + " = new " + |
1376 | variable_type + "();\n" ; |
1377 | code += indent + |
1378 | GenTypeBasic(DestinationType(enum_def.underlying_type, false)) + |
1379 | " " + variable_name + "Type = " + camel_name + "Type(" + |
1380 | type_params + ");\n" ; |
1381 | code += indent + variable_name + ".setType(" + variable_name + "Type);\n" ; |
1382 | code += indent + "Table " + variable_name + "Value;\n" ; |
1383 | code += indent + "switch (" + variable_name + "Type) {\n" ; |
1384 | for (auto eit = enum_def.Vals().begin(); eit != enum_def.Vals().end(); |
1385 | ++eit) { |
1386 | auto &ev = **eit; |
1387 | if (ev.union_type.base_type == BASE_TYPE_NONE) { |
1388 | continue; |
1389 | } else { |
1390 | if (ev.union_type.base_type == BASE_TYPE_STRING || |
1391 | (ev.union_type.base_type == BASE_TYPE_STRUCT && |
1392 | ev.union_type.struct_def->fixed)) { |
1393 | continue; // This branch is due to bad implemantation of Unions in |
1394 | // Java which doesn't handle non Table types. Should be |
1395 | // deleted when issue #6561 is fixed. |
1396 | } |
1397 | code += indent + " case " + WrapInNameSpace(enum_def) + "." + ev.name + |
1398 | ":\n" ; |
1399 | auto actual_type = GenTypeGet(ev.union_type); |
1400 | code += indent + " " + variable_name + "Value = " + camel_name + |
1401 | "(new " + actual_type + "()" + value_params + ");\n" ; |
1402 | code += indent + " " + variable_name + ".setValue(" + variable_name + |
1403 | "Value != null ? ((" + actual_type + ") " + variable_name + |
1404 | "Value).unpack() : null);\n" ; |
1405 | code += indent + " break;\n" ; |
1406 | } |
1407 | } |
1408 | code += indent + " default: break;\n" ; |
1409 | code += indent + "}\n" ; |
1410 | if (is_vector) { |
1411 | code += indent + "_o" + MakeCamel(camel_name, true) + |
1412 | "[_j] = " + variable_name + ";\n" ; |
1413 | } |
1414 | } |
1415 | |
1416 | void GenPackUnPack_ObjectAPI( |
1417 | StructDef &struct_def, std::string *code_ptr, const IDLOptions &opts, |
1418 | bool struct_has_create, |
1419 | const std::set<FieldDef *> &field_has_create) const { |
1420 | auto &code = *code_ptr; |
1421 | auto struct_name = GenTypeName_ObjectAPI(struct_def.name, opts); |
1422 | // unpack() |
1423 | code += " public " + struct_name + " unpack() {\n" ; |
1424 | code += " " + struct_name + " _o = new " + struct_name + "();\n" ; |
1425 | code += " unpackTo(_o);\n" ; |
1426 | code += " return _o;\n" ; |
1427 | code += " }\n" ; |
1428 | // unpackTo() |
1429 | code += " public void unpackTo(" + struct_name + " _o) {\n" ; |
1430 | for (auto it = struct_def.fields.vec.begin(); |
1431 | it != struct_def.fields.vec.end(); ++it) { |
1432 | auto &field = **it; |
1433 | if (field.deprecated) continue; |
1434 | if (field.value.type.base_type == BASE_TYPE_UTYPE) continue; |
1435 | if (field.value.type.element == BASE_TYPE_UTYPE) continue; |
1436 | auto camel_name = MakeCamel(field.name, false); |
1437 | auto camel_name_with_first = MakeCamel(field.name, true); |
1438 | auto type_name = |
1439 | GenTypeGet_ObjectAPI(field.value.type, opts, false, true); |
1440 | if (field.IsScalarOptional()) |
1441 | type_name = ConvertPrimitiveTypeToObjectWrapper_ObjectAPI(type_name); |
1442 | auto start = " " + type_name + " _o" + camel_name_with_first + " = " ; |
1443 | auto call_setter = true; |
1444 | switch (field.value.type.base_type) { |
1445 | case BASE_TYPE_STRUCT: { |
1446 | auto fixed = struct_def.fixed && field.value.type.struct_def->fixed; |
1447 | if (fixed) { |
1448 | code += " " + camel_name + "().unpackTo(_o.get" + |
1449 | camel_name_with_first + "());\n" ; |
1450 | } else { |
1451 | code += " if (" + camel_name + "() != null) " ; |
1452 | if (field.value.type.struct_def->fixed) { |
1453 | code += camel_name + "().unpackTo(_o.get" + |
1454 | camel_name_with_first + "());\n" ; |
1455 | } else { |
1456 | code += "_o." + GenSetterFuncName_ObjectAPI(field.name) + "(" + |
1457 | camel_name + "().unpack());\n" ; |
1458 | } |
1459 | code += " else _o." + GenSetterFuncName_ObjectAPI(field.name) + |
1460 | "(null);\n" ; |
1461 | } |
1462 | call_setter = false; |
1463 | break; |
1464 | } |
1465 | case BASE_TYPE_ARRAY: { |
1466 | auto length_str = NumToString(field.value.type.fixed_length); |
1467 | auto unpack_method = |
1468 | field.value.type.struct_def == nullptr ? "" : ".unpack()" ; |
1469 | code += |
1470 | start + "_o." + GenGetterFuncName_ObjectAPI(field.name) + "();\n" ; |
1471 | code += " for (int _j = 0; _j < " + length_str + "; ++_j) { _o" + |
1472 | camel_name_with_first + "[_j] = " + camel_name + "(_j)" + |
1473 | unpack_method + "; }\n" ; |
1474 | call_setter = false; |
1475 | break; |
1476 | } |
1477 | case BASE_TYPE_VECTOR: |
1478 | if (field.value.type.element == BASE_TYPE_UNION) { |
1479 | code += start + "new " + |
1480 | GenConcreteTypeGet_ObjectAPI(field.value.type, opts) |
1481 | .substr(0, type_name.length() - 1) + |
1482 | camel_name + "Length()];\n" ; |
1483 | code += " for (int _j = 0; _j < " + camel_name + |
1484 | "Length(); ++_j) {\n" ; |
1485 | GenUnionUnPack_ObjectAPI(*field.value.type.enum_def, code_ptr, |
1486 | type_name, camel_name, true); |
1487 | code += " }\n" ; |
1488 | } else if (field.value.type.element != BASE_TYPE_UTYPE) { |
1489 | auto fixed = field.value.type.struct_def == nullptr; |
1490 | code += start + "new " + |
1491 | GenConcreteTypeGet_ObjectAPI(field.value.type, opts) |
1492 | .substr(0, type_name.length() - 1) + |
1493 | camel_name + "Length()];\n" ; |
1494 | code += |
1495 | " for (int _j = 0; _j < " + camel_name + "Length(); ++_j) {" ; |
1496 | code += "_o" + camel_name_with_first + "[_j] = " ; |
1497 | if (fixed) { |
1498 | code += camel_name + "(_j)" ; |
1499 | } else { |
1500 | code += "(" + camel_name + "(_j) != null ? " + camel_name + |
1501 | "(_j).unpack() : null)" ; |
1502 | } |
1503 | code += ";}\n" ; |
1504 | } |
1505 | break; |
1506 | case BASE_TYPE_UTYPE: break; |
1507 | case BASE_TYPE_UNION: { |
1508 | GenUnionUnPack_ObjectAPI(*field.value.type.enum_def, code_ptr, |
1509 | type_name, camel_name, false); |
1510 | break; |
1511 | } |
1512 | default: { |
1513 | if (field.IsScalarOptional()) { |
1514 | code += start + "has" + camel_name_with_first + "() ? " + |
1515 | camel_name + "() : null;\n" ; |
1516 | } else { |
1517 | code += start + camel_name + "();\n" ; |
1518 | } |
1519 | break; |
1520 | } |
1521 | } |
1522 | if (call_setter) { |
1523 | code += " _o." + GenSetterFuncName_ObjectAPI(field.name) + "(_o" + |
1524 | camel_name_with_first + ");\n" ; |
1525 | } |
1526 | } |
1527 | code += " }\n" ; |
1528 | // pack() |
1529 | code += " public static " + GenOffsetType() + |
1530 | " pack(FlatBufferBuilder builder, " + struct_name + " _o) {\n" ; |
1531 | code += " if (_o == null) return 0;\n" ; |
1532 | for (auto it = struct_def.fields.vec.begin(); |
1533 | it != struct_def.fields.vec.end(); ++it) { |
1534 | auto &field = **it; |
1535 | if (field.deprecated) continue; |
1536 | auto camel_name = MakeCamel(field.name, false); |
1537 | auto camel_name_with_first = MakeCamel(field.name, true); |
1538 | // pre |
1539 | switch (field.value.type.base_type) { |
1540 | case BASE_TYPE_STRUCT: { |
1541 | if (!field.value.type.struct_def->fixed) { |
1542 | code += " " + GenOffsetType() + " _" + field.name + " = _o." + |
1543 | GenGetterFuncName_ObjectAPI(field.name) + |
1544 | "() == null ? 0 : " + GenTypeGet(field.value.type) + |
1545 | ".pack(builder, _o." + |
1546 | GenGetterFuncName_ObjectAPI(field.name) + "());\n" ; |
1547 | } else if (struct_def.fixed && struct_has_create) { |
1548 | std::vector<FieldArrayLength> array_lengths; |
1549 | FieldArrayLength tmp_array_length = { |
1550 | field.name, |
1551 | field.value.type.fixed_length, |
1552 | }; |
1553 | array_lengths.push_back(tmp_array_length); |
1554 | GenStructPackDecl_ObjectAPI(*field.value.type.struct_def, code_ptr, |
1555 | array_lengths); |
1556 | } |
1557 | break; |
1558 | } |
1559 | case BASE_TYPE_STRING: { |
1560 | std::string create_string = "createString" ; |
1561 | code += " int _" + camel_name + " = _o." + |
1562 | GenGetterFuncName_ObjectAPI(field.name) + |
1563 | "() == null ? 0 : " |
1564 | "builder." + |
1565 | create_string + "(_o." + |
1566 | GenGetterFuncName_ObjectAPI(field.name) + "());\n" ; |
1567 | break; |
1568 | } |
1569 | case BASE_TYPE_VECTOR: { |
1570 | if (field_has_create.find(&field) != field_has_create.end()) { |
1571 | auto property_name = camel_name; |
1572 | auto gen_for_loop = true; |
1573 | std::string array_name = "__" + camel_name; |
1574 | std::string array_type = "" ; |
1575 | std::string element_type = "" ; |
1576 | std::string to_array = "" ; |
1577 | switch (field.value.type.element) { |
1578 | case BASE_TYPE_STRING: { |
1579 | std::string create_string = "createString" ; |
1580 | array_type = "int" ; |
1581 | element_type = "String" ; |
1582 | to_array += "builder." + create_string + "(_e)" ; |
1583 | break; |
1584 | } |
1585 | case BASE_TYPE_STRUCT: |
1586 | array_type = "int" ; |
1587 | element_type = |
1588 | GenTypeGet_ObjectAPI(field.value.type, opts, true, true); |
1589 | ; |
1590 | to_array = GenTypeGet(field.value.type) + ".pack(builder, _e)" ; |
1591 | break; |
1592 | case BASE_TYPE_UTYPE: |
1593 | property_name = camel_name.substr(0, camel_name.size() - 4); |
1594 | array_type = GenTypeBasic(DestinationType( |
1595 | field.value.type.enum_def->underlying_type, false)); |
1596 | element_type = field.value.type.enum_def->name + "Union" ; |
1597 | to_array = "_o." + GenGetterFuncName_ObjectAPI(property_name) + |
1598 | "()[_j].getType()" ; |
1599 | break; |
1600 | case BASE_TYPE_UNION: |
1601 | array_type = "int" ; |
1602 | element_type = |
1603 | WrapInNameSpace(*field.value.type.enum_def) + "Union" ; |
1604 | to_array = WrapInNameSpace(*field.value.type.enum_def) + |
1605 | "Union.pack(builder, _o." + |
1606 | GenGetterFuncName_ObjectAPI(property_name) + |
1607 | "()[_j])" ; |
1608 | break; |
1609 | case BASE_TYPE_UCHAR: // TODO this branch of the switch is due to |
1610 | // inconsistent behavior in unsigned byte. |
1611 | // Read further at Issue #6574. |
1612 | array_type = "byte" ; |
1613 | element_type = "int" ; |
1614 | to_array = "(byte) _e" ; |
1615 | break; |
1616 | default: |
1617 | gen_for_loop = false; |
1618 | array_name = |
1619 | "_o." + GenGetterFuncName_ObjectAPI(property_name) + "()" ; |
1620 | array_type = GenTypeNameDest(field.value.type); |
1621 | element_type = array_type; |
1622 | to_array = "_e" ; |
1623 | break; |
1624 | } |
1625 | code += " int _" + camel_name + " = 0;\n" ; |
1626 | code += " if (_o." + GenGetterFuncName_ObjectAPI(property_name) + |
1627 | "() != null) {\n" ; |
1628 | if (gen_for_loop) { |
1629 | code += " " + array_type + "[] " + array_name + " = new " + |
1630 | array_type + "[_o." + |
1631 | GenGetterFuncName_ObjectAPI(property_name) + |
1632 | "().length];\n" ; |
1633 | code += " int _j = 0;\n" ; |
1634 | code += " for (" + element_type + " _e : _o." + |
1635 | GenGetterFuncName_ObjectAPI(property_name) + "()) { " ; |
1636 | code += array_name + "[_j] = " + to_array + "; _j++;}\n" ; |
1637 | } |
1638 | code += " _" + camel_name + " = create" + |
1639 | camel_name_with_first + "Vector(builder, " + array_name + |
1640 | ");\n" ; |
1641 | code += " }\n" ; |
1642 | } else { |
1643 | auto type_name = GenTypeGet(field.value.type); |
1644 | auto element_type_name = |
1645 | GenTypeGet_ObjectAPI(field.value.type, opts, true, true); |
1646 | auto pack_method = |
1647 | field.value.type.struct_def == nullptr |
1648 | ? "builder.add" + GenMethod(field.value.type.VectorType()) + |
1649 | "(_o" + camel_name_with_first + "[_j]);" |
1650 | : type_name + ".pack(builder, _o" + camel_name_with_first + |
1651 | "[_j]);" ; |
1652 | code += " int _" + camel_name + " = 0;\n" ; |
1653 | code += " " + element_type_name + "[] _o" + |
1654 | camel_name_with_first + " = _o." + |
1655 | GenGetterFuncName_ObjectAPI(field.name) + "();\n" ; |
1656 | code += " if (_o" + camel_name_with_first + " != null) {\n" ; |
1657 | code += " start" + camel_name_with_first + |
1658 | "Vector(builder, _o" + camel_name_with_first + |
1659 | ".length);\n" ; |
1660 | code += " for (int _j = _o" + camel_name_with_first + |
1661 | ".length - 1; _j >=0; _j--) { " ; |
1662 | code += pack_method + "}\n" ; |
1663 | code += " _" + camel_name + " = builder.endVector();\n" ; |
1664 | code += " }\n" ; |
1665 | } |
1666 | break; |
1667 | } |
1668 | case BASE_TYPE_ARRAY: { |
1669 | if (field.value.type.struct_def != nullptr) { |
1670 | std::vector<FieldArrayLength> array_lengths; |
1671 | FieldArrayLength tmp_array_length = { |
1672 | field.name, |
1673 | field.value.type.fixed_length, |
1674 | }; |
1675 | array_lengths.push_back(tmp_array_length); |
1676 | GenStructPackDecl_ObjectAPI(*field.value.type.struct_def, code_ptr, |
1677 | array_lengths); |
1678 | } else { |
1679 | code += " " + |
1680 | GenTypeGet_ObjectAPI(field.value.type, opts, false, true) + |
1681 | " _" + camel_name + " = _o." + |
1682 | GenGetterFuncName_ObjectAPI(field.name) + "();\n" ; |
1683 | } |
1684 | break; |
1685 | } |
1686 | case BASE_TYPE_UNION: { |
1687 | code += |
1688 | " " + |
1689 | GenTypeBasic(DestinationType( |
1690 | field.value.type.enum_def->underlying_type, false)) + |
1691 | " _" + camel_name + "Type = _o.get" + camel_name_with_first + |
1692 | "() == null ? " + WrapInNameSpace(*field.value.type.enum_def) + |
1693 | ".NONE : " + "_o.get" + camel_name_with_first + "().getType();\n" ; |
1694 | code += " " + GenOffsetType() + " _" + camel_name + " = _o.get" + |
1695 | camel_name_with_first + "() == null ? 0 : " + |
1696 | WrapInNameSpace(*field.value.type.enum_def) + |
1697 | "Union.pack(builder, _o.get" + camel_name_with_first + |
1698 | "());\n" ; |
1699 | break; |
1700 | } |
1701 | default: break; |
1702 | } |
1703 | } |
1704 | if (struct_has_create) { |
1705 | // Create |
1706 | code += " return create" + struct_def.name + "(\n" ; |
1707 | code += " builder" ; |
1708 | for (auto it = struct_def.fields.vec.begin(); |
1709 | it != struct_def.fields.vec.end(); ++it) { |
1710 | auto &field = **it; |
1711 | if (field.deprecated) continue; |
1712 | auto camel_name = MakeCamel(field.name, false); |
1713 | switch (field.value.type.base_type) { |
1714 | case BASE_TYPE_STRUCT: { |
1715 | if (struct_def.fixed) { |
1716 | GenStructPackCall_ObjectAPI(*field.value.type.struct_def, |
1717 | code_ptr, |
1718 | " _" + camel_name + "_" ); |
1719 | } else { |
1720 | code += ",\n" ; |
1721 | if (field.value.type.struct_def->fixed) { |
1722 | if (opts.generate_object_based_api) |
1723 | code += " _o." + camel_name; |
1724 | else |
1725 | // Seems like unreachable code |
1726 | code += " " + GenTypeGet(field.value.type) + |
1727 | ".Pack(builder, _o." + camel_name + ")" ; |
1728 | } else { |
1729 | code += " _" + field.name; |
1730 | } |
1731 | } |
1732 | break; |
1733 | } |
1734 | case BASE_TYPE_ARRAY: { |
1735 | if (field.value.type.struct_def != nullptr) { |
1736 | GenStructPackCall_ObjectAPI(*field.value.type.struct_def, |
1737 | code_ptr, |
1738 | " _" + camel_name + "_" ); |
1739 | } else { |
1740 | code += ",\n" ; |
1741 | code += " _" + camel_name; |
1742 | } |
1743 | break; |
1744 | } |
1745 | case BASE_TYPE_UNION: FLATBUFFERS_FALLTHROUGH(); // fall thru |
1746 | case BASE_TYPE_UTYPE: FLATBUFFERS_FALLTHROUGH(); // fall thru |
1747 | case BASE_TYPE_STRING: FLATBUFFERS_FALLTHROUGH(); // fall thru |
1748 | case BASE_TYPE_VECTOR: { |
1749 | code += ",\n" ; |
1750 | code += " _" + camel_name; |
1751 | break; |
1752 | } |
1753 | default: // scalar |
1754 | code += ",\n" ; |
1755 | code += |
1756 | " _o." + GenGetterFuncName_ObjectAPI(field.name) + "()" ; |
1757 | break; |
1758 | } |
1759 | } |
1760 | code += ");\n" ; |
1761 | } else { |
1762 | // Start, End |
1763 | code += " start" + struct_def.name + "(builder);\n" ; |
1764 | for (auto it = struct_def.fields.vec.begin(); |
1765 | it != struct_def.fields.vec.end(); ++it) { |
1766 | auto &field = **it; |
1767 | if (field.deprecated) continue; |
1768 | auto camel_name = MakeCamel(field.name, false); |
1769 | auto camel_name_with_first = MakeCamel(field.name, true); |
1770 | switch (field.value.type.base_type) { |
1771 | case BASE_TYPE_STRUCT: { |
1772 | if (field.value.type.struct_def->fixed) { |
1773 | code += " add" + camel_name_with_first + "(builder, " + |
1774 | GenTypeGet(field.value.type) + ".pack(builder, _o." + |
1775 | GenGetterFuncName_ObjectAPI(field.name) + "()));\n" ; |
1776 | } else { |
1777 | code += " add" + camel_name_with_first + "(builder, _" + |
1778 | field.name + ");\n" ; |
1779 | } |
1780 | break; |
1781 | } |
1782 | case BASE_TYPE_STRING: FLATBUFFERS_FALLTHROUGH(); // fall thru |
1783 | case BASE_TYPE_ARRAY: FLATBUFFERS_FALLTHROUGH(); // fall thru |
1784 | case BASE_TYPE_VECTOR: { |
1785 | code += " add" + camel_name_with_first + "(builder, _" + |
1786 | camel_name + ");\n" ; |
1787 | break; |
1788 | } |
1789 | case BASE_TYPE_UTYPE: break; |
1790 | case BASE_TYPE_UNION: { |
1791 | code += " add" + camel_name_with_first + "Type(builder, _" + |
1792 | camel_name + "Type);\n" ; |
1793 | code += " add" + camel_name_with_first + "(builder, _" + |
1794 | camel_name + ");\n" ; |
1795 | break; |
1796 | } |
1797 | // scalar |
1798 | default: { |
1799 | if (field.IsScalarOptional()) { |
1800 | code += " if (_o." + GenGetterFuncName_ObjectAPI(field.name) + |
1801 | "() != null) { add" + camel_name_with_first + |
1802 | "(builder, _o." + |
1803 | GenGetterFuncName_ObjectAPI(field.name) + "()); }\n" ; |
1804 | } else { |
1805 | code += " add" + camel_name_with_first + "(builder, _o." + |
1806 | GenGetterFuncName_ObjectAPI(field.name) + "());\n" ; |
1807 | } |
1808 | break; |
1809 | } |
1810 | } |
1811 | } |
1812 | code += " return end" + struct_def.name + "(builder);\n" ; |
1813 | } |
1814 | code += " }\n" ; |
1815 | } |
1816 | |
1817 | void GenStructPackDecl_ObjectAPI( |
1818 | const StructDef &struct_def, std::string *code_ptr, |
1819 | std::vector<FieldArrayLength> &array_lengths) const { |
1820 | auto &code = *code_ptr; |
1821 | for (auto it = struct_def.fields.vec.begin(); |
1822 | it != struct_def.fields.vec.end(); ++it) { |
1823 | auto &field = **it; |
1824 | auto is_array = IsArray(field.value.type); |
1825 | const auto &field_type = |
1826 | is_array ? field.value.type.VectorType() : field.value.type; |
1827 | FieldArrayLength tmp_array_length = { |
1828 | field.name, |
1829 | field_type.fixed_length, |
1830 | }; |
1831 | array_lengths.push_back(tmp_array_length); |
1832 | if (field_type.struct_def != nullptr) { |
1833 | GenStructPackDecl_ObjectAPI(*field_type.struct_def, code_ptr, |
1834 | array_lengths); |
1835 | } else { |
1836 | std::vector<FieldArrayLength> array_only_lengths; |
1837 | for (size_t i = 0; i < array_lengths.size(); ++i) { |
1838 | if (array_lengths[i].length > 0) { |
1839 | array_only_lengths.push_back(array_lengths[i]); |
1840 | } |
1841 | } |
1842 | std::string name; |
1843 | for (size_t i = 0; i < array_lengths.size(); ++i) { |
1844 | name += "_" + MakeCamel(array_lengths[i].name, false); |
1845 | } |
1846 | code += " " + GenTypeBasic(field_type); |
1847 | if (array_only_lengths.size() > 0) { |
1848 | for (size_t i = 0; i < array_only_lengths.size(); ++i) { |
1849 | code += "[]" ; |
1850 | } |
1851 | code += " " + name + " = " ; |
1852 | code += "new " + GenTypeBasic(field_type) + "[" ; |
1853 | for (size_t i = 0; i < array_only_lengths.size(); ++i) { |
1854 | if (i != 0) { code += "][" ; } |
1855 | code += NumToString(array_only_lengths[i].length); |
1856 | } |
1857 | code += "];\n" ; |
1858 | code += " " ; |
1859 | // initialize array |
1860 | for (size_t i = 0; i < array_only_lengths.size(); ++i) { |
1861 | auto idx = "idx" + NumToString(i); |
1862 | code += "for (int " + idx + " = 0; " + idx + " < " + |
1863 | NumToString(array_only_lengths[i].length) + "; ++" + idx + |
1864 | ") {" ; |
1865 | } |
1866 | for (size_t i = 0; i < array_only_lengths.size(); ++i) { |
1867 | auto idx = "idx" + NumToString(i); |
1868 | if (i == 0) { |
1869 | code += name + "[" + idx; |
1870 | } else { |
1871 | code += "][" + idx; |
1872 | } |
1873 | } |
1874 | code += "] = _o" ; |
1875 | for (size_t i = 0, j = 0; i < array_lengths.size(); ++i) { |
1876 | code += |
1877 | "." + GenGetterFuncName_ObjectAPI(array_lengths[i].name) + "()" ; |
1878 | if (array_lengths[i].length <= 0) continue; |
1879 | code += "[idx" + NumToString(j++) + "]" ; |
1880 | } |
1881 | code += ";" ; |
1882 | for (size_t i = 0; i < array_only_lengths.size(); ++i) { |
1883 | code += "}" ; |
1884 | } |
1885 | } else { |
1886 | code += " " + name + " = " ; |
1887 | code += "_o" ; |
1888 | for (size_t i = 0; i < array_lengths.size(); ++i) { |
1889 | code += "." + GenGetterFuncName_ObjectAPI(array_lengths[i].name) + |
1890 | "()" ; // + MakeCamel(array_lengths[i].name); |
1891 | } |
1892 | code += ";" ; |
1893 | } |
1894 | code += "\n" ; |
1895 | } |
1896 | array_lengths.pop_back(); |
1897 | } |
1898 | } |
1899 | |
1900 | void GenStructPackCall_ObjectAPI(const StructDef &struct_def, |
1901 | std::string *code_ptr, |
1902 | std::string prefix) const { |
1903 | auto &code = *code_ptr; |
1904 | for (auto it = struct_def.fields.vec.begin(); |
1905 | it != struct_def.fields.vec.end(); ++it) { |
1906 | auto &field = **it; |
1907 | const auto &field_type = field.value.type; |
1908 | if (field_type.struct_def != nullptr) { |
1909 | GenStructPackCall_ObjectAPI( |
1910 | *field_type.struct_def, code_ptr, |
1911 | prefix + MakeCamel(field.name, false) + "_" ); |
1912 | } else { |
1913 | code += ",\n" ; |
1914 | code += prefix + MakeCamel(field.name, false); |
1915 | } |
1916 | } |
1917 | } |
1918 | |
1919 | std::string ConvertPrimitiveTypeToObjectWrapper_ObjectAPI( |
1920 | std::string type_name) const { |
1921 | if (type_name == "boolean" ) |
1922 | return "Boolean" ; |
1923 | else if (type_name == "byte" ) |
1924 | return "Byte" ; |
1925 | else if (type_name == "char" ) |
1926 | return "Character" ; |
1927 | else if (type_name == "short" ) |
1928 | return "Short" ; |
1929 | else if (type_name == "int" ) |
1930 | return "Integer" ; |
1931 | else if (type_name == "long" ) |
1932 | return "Long" ; |
1933 | else if (type_name == "float" ) |
1934 | return "Float" ; |
1935 | else if (type_name == "double" ) |
1936 | return "Double" ; |
1937 | return type_name; |
1938 | } |
1939 | |
1940 | std::string GenTypeGet_ObjectAPI(flatbuffers::Type type, |
1941 | const IDLOptions &opts, bool vectorelem, |
1942 | bool wrap_in_namespace) const { |
1943 | auto type_name = GenTypeNameDest(type); |
1944 | // Replace to ObjectBaseAPI Type Name |
1945 | switch (type.base_type) { |
1946 | case BASE_TYPE_STRUCT: FLATBUFFERS_FALLTHROUGH(); // fall thru |
1947 | case BASE_TYPE_ARRAY: FLATBUFFERS_FALLTHROUGH(); // fall thru |
1948 | case BASE_TYPE_VECTOR: { |
1949 | if (type.struct_def != nullptr) { |
1950 | auto type_name_length = type.struct_def->name.length(); |
1951 | auto new_type_name = |
1952 | GenTypeName_ObjectAPI(type.struct_def->name, opts); |
1953 | type_name.replace(type_name.length() - type_name_length, |
1954 | type_name_length, new_type_name); |
1955 | } else if (type.element == BASE_TYPE_UNION) { |
1956 | if (wrap_in_namespace) { |
1957 | type_name = WrapInNameSpace(*type.enum_def) + "Union" ; |
1958 | } else { |
1959 | type_name = type.enum_def->name + "Union" ; |
1960 | } |
1961 | } |
1962 | break; |
1963 | } |
1964 | |
1965 | case BASE_TYPE_UNION: { |
1966 | if (wrap_in_namespace) { |
1967 | type_name = WrapInNameSpace(*type.enum_def) + "Union" ; |
1968 | } else { |
1969 | type_name = type.enum_def->name + "Union" ; |
1970 | } |
1971 | break; |
1972 | } |
1973 | default: break; |
1974 | } |
1975 | if (vectorelem) { return type_name; } |
1976 | switch (type.base_type) { |
1977 | case BASE_TYPE_ARRAY: FLATBUFFERS_FALLTHROUGH(); // fall thru |
1978 | case BASE_TYPE_VECTOR: { |
1979 | type_name = type_name + "[]" ; |
1980 | break; |
1981 | } |
1982 | default: break; |
1983 | } |
1984 | return type_name; |
1985 | } |
1986 | |
1987 | std::string GenConcreteTypeGet_ObjectAPI(flatbuffers::Type type, |
1988 | const IDLOptions &opts) const { |
1989 | auto type_name = GenTypeNameDest(type); |
1990 | // Replace to ObjectBaseAPI Type Name |
1991 | switch (type.base_type) { |
1992 | case BASE_TYPE_STRUCT: FLATBUFFERS_FALLTHROUGH(); // fall thru |
1993 | case BASE_TYPE_ARRAY: FLATBUFFERS_FALLTHROUGH(); // fall thru |
1994 | case BASE_TYPE_VECTOR: { |
1995 | if (type.struct_def != nullptr) { |
1996 | auto type_name_length = type.struct_def->name.length(); |
1997 | auto new_type_name = |
1998 | GenTypeName_ObjectAPI(type.struct_def->name, opts); |
1999 | type_name.replace(type_name.length() - type_name_length, |
2000 | type_name_length, new_type_name); |
2001 | } else if (type.element == BASE_TYPE_UNION) { |
2002 | type_name = WrapInNameSpace(*type.enum_def) + "Union" ; |
2003 | } |
2004 | break; |
2005 | } |
2006 | |
2007 | case BASE_TYPE_UNION: { |
2008 | type_name = WrapInNameSpace(*type.enum_def) + "Union" ; |
2009 | break; |
2010 | } |
2011 | default: break; |
2012 | } |
2013 | |
2014 | switch (type.base_type) { |
2015 | case BASE_TYPE_ARRAY: FLATBUFFERS_FALLTHROUGH(); // fall thru |
2016 | case BASE_TYPE_VECTOR: { |
2017 | type_name = type_name + "[]" ; |
2018 | break; |
2019 | } |
2020 | default: break; |
2021 | } |
2022 | return type_name; |
2023 | } |
2024 | |
2025 | void GenStruct_ObjectAPI(StructDef &struct_def, std::string *code_ptr, |
2026 | const IDLOptions &opts) const { |
2027 | if (struct_def.generated) return; |
2028 | auto &code = *code_ptr; |
2029 | if (struct_def.attributes.Lookup("private" )) { |
2030 | // For Java, we leave the enum unmarked to indicate package-private |
2031 | } else { |
2032 | code += "public " ; |
2033 | } |
2034 | |
2035 | auto class_name = GenTypeName_ObjectAPI(struct_def.name, opts); |
2036 | code += "class " + class_name; |
2037 | code += " {\n" ; |
2038 | // Generate Properties |
2039 | for (auto it = struct_def.fields.vec.begin(); |
2040 | it != struct_def.fields.vec.end(); ++it) { |
2041 | auto &field = **it; |
2042 | if (field.deprecated) continue; |
2043 | if (field.value.type.base_type == BASE_TYPE_UTYPE) continue; |
2044 | if (field.value.type.element == BASE_TYPE_UTYPE) continue; |
2045 | auto type_name = |
2046 | GenTypeGet_ObjectAPI(field.value.type, opts, false, true); |
2047 | if (field.IsScalarOptional()) |
2048 | type_name = ConvertPrimitiveTypeToObjectWrapper_ObjectAPI(type_name); |
2049 | auto camel_name = MakeCamel(field.name, false); |
2050 | code += " private " + type_name + " " + camel_name + ";\n" ; |
2051 | } |
2052 | // Generate Java getters and setters |
2053 | code += "\n" ; |
2054 | for (auto it = struct_def.fields.vec.begin(); |
2055 | it != struct_def.fields.vec.end(); ++it) { |
2056 | auto &field = **it; |
2057 | if (field.deprecated) continue; |
2058 | if (field.value.type.base_type == BASE_TYPE_UTYPE) continue; |
2059 | if (field.value.type.element == BASE_TYPE_UTYPE) continue; |
2060 | auto type_name = |
2061 | GenTypeGet_ObjectAPI(field.value.type, opts, false, true); |
2062 | if (field.IsScalarOptional()) |
2063 | type_name = ConvertPrimitiveTypeToObjectWrapper_ObjectAPI(type_name); |
2064 | auto camel_name = MakeCamel(field.name, false); |
2065 | code += " public " + type_name + " " + |
2066 | GenGetterFuncName_ObjectAPI(field.name) + "() { return " + |
2067 | camel_name + "; }\n\n" ; |
2068 | std::string array_validation = "" ; |
2069 | if (field.value.type.base_type == BASE_TYPE_ARRAY) { |
2070 | array_validation = |
2071 | "if (" + camel_name + " != null && " + camel_name + |
2072 | ".length == " + NumToString(field.value.type.fixed_length) + ") " ; |
2073 | } |
2074 | code += " public void " + GenSetterFuncName_ObjectAPI(field.name) + "(" + |
2075 | type_name + " " + camel_name + ") { " + array_validation + |
2076 | "this." + camel_name + " = " + camel_name + "; }\n\n" ; |
2077 | } |
2078 | // Generate Constructor |
2079 | code += "\n" ; |
2080 | code += " public " + class_name + "() {\n" ; |
2081 | for (auto it = struct_def.fields.vec.begin(); |
2082 | it != struct_def.fields.vec.end(); ++it) { |
2083 | auto &field = **it; |
2084 | if (field.deprecated) continue; |
2085 | if (field.value.type.base_type == BASE_TYPE_UTYPE) continue; |
2086 | if (field.value.type.element == BASE_TYPE_UTYPE) continue; |
2087 | code += " this." + MakeCamel(field.name, false) + " = " ; |
2088 | auto type_name = |
2089 | GenTypeGet_ObjectAPI(field.value.type, opts, false, true); |
2090 | if (IsScalar(field.value.type.base_type)) { |
2091 | if (field.IsScalarOptional()) { |
2092 | code += "null;\n" ; |
2093 | } else { |
2094 | code += GenDefaultValue(field) + ";\n" ; |
2095 | } |
2096 | } else { |
2097 | switch (field.value.type.base_type) { |
2098 | case BASE_TYPE_STRUCT: { |
2099 | if (IsStruct(field.value.type)) { |
2100 | code += "new " + type_name + "();\n" ; |
2101 | } else { |
2102 | code += "null;\n" ; |
2103 | } |
2104 | break; |
2105 | } |
2106 | case BASE_TYPE_ARRAY: { |
2107 | code += "new " + type_name.substr(0, type_name.length() - 1) + |
2108 | NumToString(field.value.type.fixed_length) + "];\n" ; |
2109 | break; |
2110 | } |
2111 | default: { |
2112 | code += "null;\n" ; |
2113 | break; |
2114 | } |
2115 | } |
2116 | } |
2117 | } |
2118 | code += " }\n" ; |
2119 | if (parser_.root_struct_def_ == &struct_def) { |
2120 | code += " public static " + class_name + |
2121 | " deserializeFromBinary(byte[] fbBuffer) {\n" ; |
2122 | code += " return " + struct_def.name + ".getRootAs" + struct_def.name + |
2123 | "(ByteBuffer.wrap(fbBuffer)).unpack();\n" ; |
2124 | code += " }\n" ; |
2125 | code += " public byte[] serializeToBinary() {\n" ; |
2126 | code += " FlatBufferBuilder fbb = new FlatBufferBuilder();\n" ; |
2127 | code += " " + struct_def.name + ".finish" + struct_def.name + |
2128 | "Buffer(fbb, " + struct_def.name + ".pack(fbb, this));\n" ; |
2129 | code += " return fbb.sizedByteArray();\n" ; |
2130 | code += " }\n" ; |
2131 | } |
2132 | code += "}\n\n" ; |
2133 | } |
2134 | |
2135 | // This tracks the current namespace used to determine if a type need to be |
2136 | // prefixed by its namespace |
2137 | const Namespace *cur_name_space_; |
2138 | }; |
2139 | } // namespace java |
2140 | |
2141 | bool GenerateJava(const Parser &parser, const std::string &path, |
2142 | const std::string &file_name) { |
2143 | java::JavaGenerator generator(parser, path, file_name); |
2144 | return generator.generate(); |
2145 | } |
2146 | |
2147 | } // namespace flatbuffers |
2148 | |