Line data Source code
1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /*
3 : * This file is part of the LibreOffice project.
4 : *
5 : * This Source Code Form is subject to the terms of the Mozilla Public
6 : * License, v. 2.0. If a copy of the MPL was not distributed with this
7 : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 : *
9 : * This file incorporates work covered by the following license notice:
10 : *
11 : * Licensed to the Apache Software Foundation (ASF) under one or more
12 : * contributor license agreements. See the NOTICE file distributed
13 : * with this work for additional information regarding copyright
14 : * ownership. The ASF licenses this file to you under the Apache
15 : * License, Version 2.0 (the "License"); you may not use this file
16 : * except in compliance with the License. You may obtain a copy of
17 : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 : */
19 :
20 :
21 : #include "classfile.hxx"
22 :
23 : #include "codemaker/global.hxx"
24 : #include "codemaker/options.hxx"
25 : #include "codemaker/unotype.hxx"
26 :
27 : #include "boost/static_assert.hpp"
28 : #include "osl/diagnose.h"
29 : #include "rtl/string.h"
30 : #include "rtl/string.hxx"
31 : #include "sal/types.h"
32 :
33 : #include <map>
34 : #include <utility>
35 : #include <vector>
36 :
37 : using codemaker::javamaker::ClassFile;
38 :
39 : namespace {
40 :
41 0 : void appendU1(std::vector< unsigned char > & stream, sal_uInt8 data) {
42 0 : stream.push_back(static_cast< unsigned char >(data));
43 0 : }
44 :
45 0 : void appendU2(std::vector< unsigned char > & stream, sal_uInt16 data) {
46 0 : stream.push_back(static_cast< unsigned char >(data >> 8));
47 0 : stream.push_back(static_cast< unsigned char >(data & 0xFF));
48 0 : }
49 :
50 0 : void appendU4(std::vector< unsigned char > & stream, sal_uInt32 data) {
51 0 : stream.push_back(static_cast< unsigned char >(data >> 24));
52 0 : stream.push_back(static_cast< unsigned char >((data >> 16) & 0xFF));
53 0 : stream.push_back(static_cast< unsigned char >((data >> 8) & 0xFF));
54 0 : stream.push_back(static_cast< unsigned char >(data & 0xFF));
55 0 : }
56 :
57 0 : void appendU8(std::vector< unsigned char > & stream, sal_uInt64 data) {
58 0 : stream.push_back(static_cast< unsigned char >(data >> 56));
59 0 : stream.push_back(static_cast< unsigned char >((data >> 48) & 0xFF));
60 0 : stream.push_back(static_cast< unsigned char >((data >> 40) & 0xFF));
61 0 : stream.push_back(static_cast< unsigned char >((data >> 32) & 0xFF));
62 0 : stream.push_back(static_cast< unsigned char >((data >> 24) & 0xFF));
63 0 : stream.push_back(static_cast< unsigned char >((data >> 16) & 0xFF));
64 0 : stream.push_back(static_cast< unsigned char >((data >> 8) & 0xFF));
65 0 : stream.push_back(static_cast< unsigned char >(data & 0xFF));
66 0 : }
67 :
68 0 : void appendStream(
69 : std::vector< unsigned char > & stream,
70 : std::vector< unsigned char > const & data)
71 : {
72 0 : stream.insert(stream.end(), data.begin(), data.end());
73 0 : }
74 :
75 0 : void write(FileStream & file, void const * buffer, sal_uInt64 size) {
76 0 : if (!file.write(buffer, size))
77 0 : throw CannotDumpException("Error writing file");
78 0 : }
79 :
80 0 : void writeU2(FileStream & file, sal_uInt16 data) {
81 : unsigned char buf[] = {
82 0 : static_cast< unsigned char >(data >> 8),
83 0 : static_cast< unsigned char >(data & 0xFF) };
84 0 : write(file, buf, sizeof buf);
85 0 : }
86 :
87 0 : void writeU4(FileStream & file, sal_uInt32 data) {
88 : unsigned char buf[] = {
89 0 : static_cast< unsigned char >(data >> 24),
90 0 : static_cast< unsigned char >((data >> 16) & 0xFF),
91 0 : static_cast< unsigned char >((data >> 8) & 0xFF),
92 0 : static_cast< unsigned char >(data & 0xFF) };
93 0 : write(file, buf, sizeof buf);
94 0 : }
95 :
96 0 : void writeStream(FileStream & file, std::vector< unsigned char > const & stream)
97 : {
98 0 : std::vector< unsigned char >::size_type n = stream.size();
99 : BOOST_STATIC_ASSERT(
100 : sizeof (std::vector< unsigned char >::size_type)
101 : <= sizeof (sal_uInt64));
102 : // both unsigned integral, so sizeof is a practically sufficient
103 : // approximation of std::numeric_limits<T1>::max() <=
104 : // std::numeric_limits<T2>::max()
105 0 : if (n != 0) {
106 0 : write(file, &stream[0], static_cast< sal_uInt64 >(n));
107 : }
108 0 : }
109 :
110 : }
111 :
112 0 : ClassFile::Code::~Code() {}
113 :
114 0 : void ClassFile::Code::instrAastore() {
115 : // aastore:
116 0 : appendU1(m_code, 0x53);
117 0 : }
118 :
119 0 : void ClassFile::Code::instrAconstNull() {
120 : // aconst_null:
121 0 : appendU1(m_code, 0x01);
122 0 : }
123 :
124 0 : void ClassFile::Code::instrAnewarray(OString const & type) {
125 : // anewarray <indexbyte1> <indexbyte2>:
126 0 : appendU1(m_code, 0xBD);
127 0 : appendU2(m_code, m_classFile.addClassInfo(type));
128 0 : }
129 :
130 0 : void ClassFile::Code::instrAreturn() {
131 : // areturn:
132 0 : appendU1(m_code, 0xB0);
133 0 : }
134 :
135 0 : void ClassFile::Code::instrAthrow() {
136 : // athrow:
137 0 : appendU1(m_code, 0xBF);
138 0 : }
139 :
140 0 : void ClassFile::Code::instrCheckcast(OString const & type) {
141 : // checkcast <indexbyte1> <indexbyte2>:
142 0 : appendU1(m_code, 0xC0);
143 0 : appendU2(m_code, m_classFile.addClassInfo(type));
144 0 : }
145 :
146 0 : void ClassFile::Code::instrDup() {
147 : // dup:
148 0 : appendU1(m_code, 0x59);
149 0 : }
150 :
151 0 : void ClassFile::Code::instrGetstatic(
152 : OString const & type, OString const & name,
153 : OString const & descriptor)
154 : {
155 : // getstatic <indexbyte1> <indexbyte2>:
156 0 : appendU1(m_code, 0xB2);
157 0 : appendU2(m_code, m_classFile.addFieldrefInfo(type, name, descriptor));
158 0 : }
159 :
160 0 : ClassFile::Code::Branch ClassFile::Code::instrIfAcmpne() {
161 : // if_acmpne <branchbyte1> <branchbyte2>:
162 0 : Branch branch = m_code.size();
163 0 : appendU1(m_code, 0xA6);
164 0 : appendU2(m_code, 0);
165 0 : return branch;
166 : }
167 :
168 0 : ClassFile::Code::Branch ClassFile::Code::instrIfeq() {
169 : // ifeq <branchbyte1> <branchbyte2>:
170 0 : Branch branch = m_code.size();
171 0 : appendU1(m_code, 0x99);
172 0 : appendU2(m_code, 0);
173 0 : return branch;
174 : }
175 :
176 0 : ClassFile::Code::Branch ClassFile::Code::instrIfnull() {
177 : // ifnull <branchbyte1> <branchbyte2>:
178 0 : Branch branch = m_code.size();
179 0 : appendU1(m_code, 0xC6);
180 0 : appendU2(m_code, 0);
181 0 : return branch;
182 : }
183 :
184 0 : void ClassFile::Code::instrInstanceof(OString const & type) {
185 : // instanceof <indexbyte1> <indexbyte2>:
186 0 : appendU1(m_code, 0xC1);
187 0 : appendU2(m_code, m_classFile.addClassInfo(type));
188 0 : }
189 :
190 0 : void ClassFile::Code::instrInvokeinterface(
191 : OString const & type, OString const & name,
192 : OString const & descriptor, sal_uInt8 args)
193 : {
194 : // invokeinterface <indexbyte1> <indexbyte2> <nargs> 0:
195 0 : appendU1(m_code, 0xB9);
196 : appendU2(
197 0 : m_code, m_classFile.addInterfaceMethodrefInfo(type, name, descriptor));
198 0 : appendU1(m_code, args);
199 0 : appendU1(m_code, 0);
200 0 : }
201 :
202 0 : void ClassFile::Code::instrInvokespecial(
203 : OString const & type, OString const & name,
204 : OString const & descriptor)
205 : {
206 : // invokespecial <indexbyte1> <indexbyte2>:
207 0 : appendU1(m_code, 0xB7);
208 0 : appendU2(m_code, m_classFile.addMethodrefInfo(type, name, descriptor));
209 0 : }
210 :
211 0 : void ClassFile::Code::instrInvokestatic(
212 : OString const & type, OString const & name,
213 : OString const & descriptor)
214 : {
215 : // invokestatic <indexbyte1> <indexbyte2>:
216 0 : appendU1(m_code, 0xB8);
217 0 : appendU2(m_code, m_classFile.addMethodrefInfo(type, name, descriptor));
218 0 : }
219 :
220 0 : void ClassFile::Code::instrInvokevirtual(
221 : OString const & type, OString const & name,
222 : OString const & descriptor)
223 : {
224 : // invokevirtual <indexbyte1> <indexbyte2>:
225 0 : appendU1(m_code, 0xB6);
226 0 : appendU2(m_code, m_classFile.addMethodrefInfo(type, name, descriptor));
227 0 : }
228 :
229 0 : void ClassFile::Code::instrLookupswitch(
230 : Code const * defaultBlock,
231 : std::list< std::pair< sal_Int32, Code * > > const & blocks)
232 : {
233 : // lookupswitch <0--3 byte pad> <defaultbyte1> <defaultbyte2> <defaultbyte3>
234 : // <defaultbyte4> <npairs1> <npairs2> <npairs3> <npairs4>
235 : // <match--offset pairs...>:
236 0 : std::list< std::pair< sal_Int32, Code * > >::size_type size = blocks.size();
237 0 : if (size > SAL_MAX_INT32) {
238 0 : throw CannotDumpException("Lookup-switch too large for Java class file format");
239 : }
240 0 : Position pos1 = m_code.size();
241 0 : appendU1(m_code, 0xAB);
242 0 : int pad = (pos1 + 1) % 4;
243 0 : for (int i = 0; i < pad; ++i) {
244 0 : appendU1(m_code, 0);
245 : }
246 0 : Position pos2 = pos1 + 1 + pad + 8 + blocks.size() * 8; //FIXME: overflow
247 0 : appendU4(m_code, static_cast< sal_uInt32 >(pos2 - pos1)); //FIXME: overflow
248 0 : pos2 += defaultBlock->m_code.size(); //FIXME: overflow
249 0 : appendU4(m_code, static_cast< sal_uInt32 >(size));
250 0 : for (std::list< std::pair< sal_Int32, Code * > >::const_iterator i(
251 0 : blocks.begin());
252 0 : i != blocks.end(); ++i)
253 : {
254 0 : appendU4(m_code, static_cast< sal_uInt32 >(i->first));
255 0 : appendU4(m_code, static_cast< sal_uInt32 >(pos2 - pos1));
256 : //FIXME: overflow
257 0 : pos2 += i->second->m_code.size(); //FIXME: overflow
258 : }
259 0 : appendStream(m_code, defaultBlock->m_code);
260 0 : for (std::list< std::pair< sal_Int32, Code * > >::const_iterator i(
261 0 : blocks.begin());
262 0 : i != blocks.end(); ++i)
263 : {
264 0 : appendStream(m_code, i->second->m_code);
265 : }
266 0 : }
267 :
268 0 : void ClassFile::Code::instrNew(OString const & type) {
269 : // new <indexbyte1> <indexbyte2>:
270 0 : appendU1(m_code, 0xBB);
271 0 : appendU2(m_code, m_classFile.addClassInfo(type));
272 0 : }
273 :
274 0 : void ClassFile::Code::instrNewarray(codemaker::UnoType::Sort sort) {
275 : OSL_ASSERT(
276 : sort >= codemaker::UnoType::SORT_BOOLEAN
277 : && sort <= codemaker::UnoType::SORT_CHAR);
278 : // newarray <atype>:
279 0 : appendU1(m_code, 0xBC);
280 : static sal_uInt8 const atypes[codemaker::UnoType::SORT_CHAR] = {
281 : 0x04, 0x08, 0x09, 0x09, 0x0A, 0x0A, 0x0B, 0x0B, 0x06, 0x07, 0x05 };
282 0 : appendU1(m_code, atypes[sort - 1]);
283 0 : }
284 :
285 0 : void ClassFile::Code::instrPop() {
286 : // pop:
287 0 : appendU1(m_code, 0x57);
288 0 : }
289 :
290 0 : void ClassFile::Code::instrPutfield(
291 : OString const & type, OString const & name,
292 : OString const & descriptor)
293 : {
294 : // putfield <indexbyte1> <indexbyte2>:
295 0 : appendU1(m_code, 0xB5);
296 0 : appendU2(m_code, m_classFile.addFieldrefInfo(type, name, descriptor));
297 0 : }
298 :
299 0 : void ClassFile::Code::instrPutstatic(
300 : OString const & type, OString const & name,
301 : OString const & descriptor)
302 : {
303 : // putstatic <indexbyte1> <indexbyte2>:
304 0 : appendU1(m_code, 0xB3);
305 0 : appendU2(m_code, m_classFile.addFieldrefInfo(type, name, descriptor));
306 0 : }
307 :
308 0 : void ClassFile::Code::instrReturn() {
309 : // return:
310 0 : appendU1(m_code, 0xB1);
311 0 : }
312 :
313 0 : void ClassFile::Code::instrSwap() {
314 : // swap:
315 0 : appendU1(m_code, 0x5F);
316 0 : }
317 :
318 0 : void ClassFile::Code::instrTableswitch(
319 : Code const * defaultBlock, sal_Int32 low,
320 : std::list< Code * > const & blocks)
321 : {
322 : // tableswitch <0--3 byte pad> <defaultbyte1> <defaultbyte2> <defaultbyte3>
323 : // <defaultbyte4> <lowbyte1> <lowbyte2> <lowbyte3> <lowbyte4> <highbyte1>
324 : // <highbyte2> <highbyte3> <highbyte4> <jump offsets...>:
325 0 : Position pos1 = m_code.size();
326 0 : appendU1(m_code, 0xAA);
327 0 : int pad = (pos1 + 1) % 4;
328 0 : for (int i = 0; i < pad; ++i) {
329 0 : appendU1(m_code, 0);
330 : }
331 0 : std::list< Code * >::size_type size = blocks.size();
332 0 : Position pos2 = pos1 + 1 + pad + 12 + size * 4; //FIXME: overflow
333 0 : sal_uInt32 defaultOffset = static_cast< sal_uInt32 >(pos2 - pos1);
334 : //FIXME: overflow
335 0 : appendU4(m_code, defaultOffset);
336 0 : pos2 += defaultBlock->m_code.size(); //FIXME: overflow
337 0 : appendU4(m_code, static_cast< sal_uInt32 >(low));
338 0 : appendU4(m_code, static_cast< sal_uInt32 >(low + (size - 1)));
339 0 : for (std::list< Code * >::const_iterator i(blocks.begin());
340 0 : i != blocks.end(); ++i)
341 : {
342 0 : if (*i == 0) {
343 0 : appendU4(m_code, defaultOffset);
344 : } else {
345 0 : appendU4(m_code, static_cast< sal_uInt32 >(pos2 - pos1));
346 : //FIXME: overflow
347 0 : pos2 += (*i)->m_code.size(); //FIXME: overflow
348 : }
349 : }
350 0 : appendStream(m_code, defaultBlock->m_code);
351 0 : for (std::list< Code * >::const_iterator i(blocks.begin());
352 0 : i != blocks.end(); ++i)
353 : {
354 0 : if (*i != 0) {
355 0 : appendStream(m_code, (*i)->m_code);
356 : }
357 : }
358 0 : }
359 :
360 0 : void ClassFile::Code::loadIntegerConstant(sal_Int32 value) {
361 0 : if (value >= -1 && value <= 5) {
362 : // iconst_<i>:
363 0 : appendU1(m_code, static_cast< sal_uInt8 >(0x02 + value + 1));
364 0 : } else if (value >= -128 && value <= 127) {
365 : // bipush <byte>:
366 0 : appendU1(m_code, 0x10);
367 0 : appendU1(m_code, static_cast< sal_uInt8 >(value));
368 0 : } else if (value >= -32768 && value <= 32767) {
369 : // sipush <byte1> <byte2>:
370 0 : appendU1(m_code, 0x11);
371 0 : appendU2(m_code, static_cast< sal_uInt16 >(value));
372 : } else {
373 0 : ldc(m_classFile.addIntegerInfo(value));
374 : }
375 0 : }
376 :
377 0 : void ClassFile::Code::loadStringConstant(OString const & value) {
378 0 : ldc(m_classFile.addStringInfo(value));
379 0 : }
380 :
381 0 : void ClassFile::Code::loadLocalInteger(sal_uInt16 index) {
382 0 : accessLocal(index, 0x1A, 0x15); // iload_<n>, iload
383 0 : }
384 :
385 0 : void ClassFile::Code::loadLocalLong(sal_uInt16 index) {
386 0 : accessLocal(index, 0x1E, 0x16); // load_<n>, load
387 0 : }
388 :
389 0 : void ClassFile::Code::loadLocalFloat(sal_uInt16 index) {
390 0 : accessLocal(index, 0x22, 0x17); // load_<n>, load
391 0 : }
392 :
393 0 : void ClassFile::Code::loadLocalDouble(sal_uInt16 index) {
394 0 : accessLocal(index, 0x26, 0x18); // load_<n>, load
395 0 : }
396 :
397 0 : void ClassFile::Code::loadLocalReference(sal_uInt16 index) {
398 0 : accessLocal(index, 0x2A, 0x19); // aload_<n>, aload
399 0 : }
400 :
401 0 : void ClassFile::Code::storeLocalReference(sal_uInt16 index) {
402 0 : accessLocal(index, 0x4B, 0x3A); // astore_<n>, astore
403 0 : }
404 :
405 0 : void ClassFile::Code::branchHere(Branch branch) {
406 0 : std::vector< unsigned char >::size_type n = m_code.size();
407 : OSL_ASSERT(n > branch && n - branch <= SAL_MAX_INT16);
408 0 : n -= branch;
409 0 : m_code[branch + 1] = static_cast< sal_uInt8 >(n >> 8);
410 0 : m_code[branch + 2] = static_cast< sal_uInt8 >(n & 0xFF);
411 0 : }
412 :
413 0 : void ClassFile::Code::addException(
414 : Position start, Position end, Position handler, OString const & type)
415 : {
416 : OSL_ASSERT(start < end && end <= m_code.size() && handler <= m_code.size());
417 0 : if (m_exceptionTableLength == SAL_MAX_UINT16) {
418 0 : throw CannotDumpException("Too many exception handlers for Java class file format");
419 : }
420 0 : ++m_exceptionTableLength;
421 0 : appendU2(m_exceptionTable, static_cast< sal_uInt16 >(start));
422 : //FIXME: overflow
423 0 : appendU2(m_exceptionTable, static_cast< sal_uInt16 >(end));
424 : //FIXME: overflow
425 0 : appendU2(m_exceptionTable, static_cast< sal_uInt16 >(handler));
426 : //FIXME: overflow
427 0 : appendU2(m_exceptionTable, m_classFile.addClassInfo(type));
428 0 : }
429 :
430 0 : ClassFile::Code::Position ClassFile::Code::getPosition() const {
431 0 : return m_code.size();
432 : }
433 :
434 0 : ClassFile::Code::Code(ClassFile & classFile)
435 : : m_classFile(classFile)
436 : , m_maxStack(0)
437 : , m_maxLocals(0)
438 0 : , m_exceptionTableLength(0)
439 0 : {}
440 :
441 0 : void ClassFile::Code::ldc(sal_uInt16 index) {
442 0 : if (index <= 0xFF) {
443 : // ldc <index>:
444 0 : appendU1(m_code, 0x12);
445 0 : appendU1(m_code, static_cast< sal_uInt8 >(index));
446 : } else {
447 : // ldc_w <indexbyte1> <indexbyte2>:
448 0 : appendU1(m_code, 0x13);
449 0 : appendU2(m_code, index);
450 : }
451 0 : }
452 :
453 0 : void ClassFile::Code::accessLocal(
454 : sal_uInt16 index, sal_uInt8 fastOp, sal_uInt8 normalOp)
455 : {
456 0 : if (index <= 3) {
457 : // ...load/store_<n>:
458 0 : appendU1(m_code, static_cast< sal_uInt8 >(fastOp + index));
459 0 : } else if (index <= 0xFF) {
460 : // ...load/store <index>:
461 0 : appendU1(m_code, normalOp);
462 0 : appendU1(m_code, static_cast< sal_uInt8 >(index));
463 : } else {
464 : // wide ...load/store <indexbyte1> <indexbyte2>:
465 0 : appendU1(m_code, 0xC4);
466 0 : appendU1(m_code, normalOp);
467 0 : appendU2(m_code, index);
468 : }
469 0 : }
470 :
471 0 : ClassFile::ClassFile(
472 : AccessFlags accessFlags, OString const & thisClass,
473 : OString const & superClass, OString const & signature):
474 : m_constantPoolCount(1), m_accessFlags(accessFlags), m_interfacesCount(0),
475 0 : m_fieldsCount(0), m_methodsCount(0), m_attributesCount(0)
476 : {
477 0 : m_thisClass = addClassInfo(thisClass);
478 0 : m_superClass = addClassInfo(superClass);
479 0 : if (!signature.isEmpty()) {
480 0 : ++m_attributesCount;
481 0 : appendU2(m_attributes, addUtf8Info("Signature"));
482 0 : appendU4(m_attributes, 2);
483 0 : appendU2(m_attributes, addUtf8Info(signature));
484 : }
485 0 : }
486 :
487 0 : ClassFile::~ClassFile() {}
488 :
489 0 : ClassFile::Code * ClassFile::newCode() {
490 0 : return new Code(*this);
491 : }
492 :
493 0 : sal_uInt16 ClassFile::addIntegerInfo(sal_Int32 value) {
494 0 : std::map< sal_Int32, sal_uInt16 >::iterator i(m_integerInfos.find(value));
495 0 : if (i != m_integerInfos.end()) {
496 0 : return i->second;
497 : }
498 0 : sal_uInt16 index = nextConstantPoolIndex(1);
499 0 : appendU1(m_constantPool, 3);
500 0 : appendU4(m_constantPool, static_cast< sal_uInt32 >(value));
501 0 : if (!m_integerInfos.insert(
502 0 : std::map< sal_Int32, sal_uInt16 >::value_type(value, index)).second)
503 : {
504 : OSL_ASSERT(false);
505 : }
506 0 : return index;
507 : }
508 :
509 0 : sal_uInt16 ClassFile::addFloatInfo(float value) {
510 0 : std::map< float, sal_uInt16 >::iterator i(m_floatInfos.find(value));
511 0 : if (i != m_floatInfos.end()) {
512 0 : return i->second;
513 : }
514 0 : sal_uInt16 index = nextConstantPoolIndex(1);
515 0 : appendU1(m_constantPool, 4);
516 : union { float floatBytes; sal_uInt32 uint32Bytes; } bytes;
517 0 : bytes.floatBytes = value;
518 0 : appendU4(m_constantPool, bytes.uint32Bytes);
519 0 : if (!m_floatInfos.insert(
520 0 : std::map< float, sal_uInt16 >::value_type(value, index)).second)
521 : {
522 : OSL_ASSERT(false);
523 : }
524 0 : return index;
525 : }
526 :
527 0 : sal_uInt16 ClassFile::addLongInfo(sal_Int64 value) {
528 0 : std::map< sal_Int64, sal_uInt16 >::iterator i(m_longInfos.find(value));
529 0 : if (i != m_longInfos.end()) {
530 0 : return i->second;
531 : }
532 0 : sal_uInt16 index = nextConstantPoolIndex(2);
533 0 : appendU1(m_constantPool, 5);
534 0 : appendU8(m_constantPool, static_cast< sal_uInt64 >(value));
535 0 : if (!m_longInfos.insert(
536 0 : std::map< sal_Int64, sal_uInt16 >::value_type(value, index)).second)
537 : {
538 : OSL_ASSERT(false);
539 : }
540 0 : return index;
541 : }
542 :
543 0 : sal_uInt16 ClassFile::addDoubleInfo(double value) {
544 0 : std::map< double, sal_uInt16 >::iterator i(m_doubleInfos.find(value));
545 0 : if (i != m_doubleInfos.end()) {
546 0 : return i->second;
547 : }
548 0 : sal_uInt16 index = nextConstantPoolIndex(2);
549 0 : appendU1(m_constantPool, 6);
550 : union { double doubleBytes; sal_uInt64 uint64Bytes; } bytes;
551 0 : bytes.doubleBytes = value;
552 0 : appendU8(m_constantPool, bytes.uint64Bytes);
553 0 : if (!m_doubleInfos.insert(
554 0 : std::map< double, sal_uInt16 >::value_type(value, index)).second)
555 : {
556 : OSL_ASSERT(false);
557 : }
558 0 : return index;
559 : }
560 :
561 0 : void ClassFile::addInterface(OString const & interface) {
562 0 : if (m_interfacesCount == SAL_MAX_UINT16) {
563 0 : throw CannotDumpException("Too many interfaces for Java class file format");
564 : }
565 0 : ++m_interfacesCount;
566 0 : appendU2(m_interfaces, addClassInfo(interface));
567 0 : }
568 :
569 0 : void ClassFile::addField(
570 : AccessFlags accessFlags, OString const & name,
571 : OString const & descriptor, sal_uInt16 constantValueIndex,
572 : OString const & signature)
573 : {
574 0 : if (m_fieldsCount == SAL_MAX_UINT16) {
575 0 : throw CannotDumpException("Too many fields for Java class file format");
576 : }
577 0 : ++m_fieldsCount;
578 0 : appendU2(m_fields, static_cast< sal_uInt16 >(accessFlags));
579 0 : appendU2(m_fields, addUtf8Info(name));
580 0 : appendU2(m_fields, addUtf8Info(descriptor));
581 : appendU2(
582 : m_fields,
583 : ((constantValueIndex == 0 ? 0 : 1)
584 0 : + (signature.isEmpty() ? 0 : 1)));
585 0 : if (constantValueIndex != 0) {
586 0 : appendU2(m_fields, addUtf8Info("ConstantValue"));
587 0 : appendU4(m_fields, 2);
588 0 : appendU2(m_fields, constantValueIndex);
589 : }
590 0 : appendSignatureAttribute(m_fields, signature);
591 0 : }
592 :
593 0 : void ClassFile::addMethod(
594 : AccessFlags accessFlags, OString const & name,
595 : OString const & descriptor, Code const * code,
596 : std::vector< OString > const & exceptions,
597 : OString const & signature)
598 : {
599 0 : if (m_methodsCount == SAL_MAX_UINT16) {
600 0 : throw CannotDumpException("Too many methods for Java class file format");
601 : }
602 0 : ++m_methodsCount;
603 0 : appendU2(m_methods, static_cast< sal_uInt16 >(accessFlags));
604 0 : appendU2(m_methods, addUtf8Info(name));
605 0 : appendU2(m_methods, addUtf8Info(descriptor));
606 0 : std::vector< OString >::size_type excs = exceptions.size();
607 0 : if (excs > SAL_MAX_UINT16) {
608 0 : throw CannotDumpException("Too many exception specifications for Java class file format");
609 : }
610 : appendU2(
611 : m_methods,
612 0 : ((code == 0 ? 0 : 1) + (exceptions.empty() ? 0 : 1)
613 0 : + (signature.isEmpty() ? 0 : 1)));
614 0 : if (code != 0) {
615 0 : std::vector< unsigned char >::size_type codeSize = code->m_code.size();
616 : std::vector< unsigned char >::size_type exceptionTableSize
617 0 : = code->m_exceptionTable.size();
618 0 : if (codeSize > SAL_MAX_UINT32 - (2 + 2 + 4 + 2 + 2)
619 0 : || (exceptionTableSize
620 : > (SAL_MAX_UINT32 - (2 + 2 + 4 + 2 + 2)
621 0 : - static_cast< sal_uInt32 >(codeSize))))
622 : {
623 0 : throw CannotDumpException("Code block is too big for Java class file format");
624 : }
625 0 : appendU2(m_methods, addUtf8Info("Code"));
626 : appendU4(
627 : m_methods,
628 : (2 + 2 + 4 + static_cast< sal_uInt32 >(codeSize) + 2
629 0 : + static_cast< sal_uInt32 >(exceptionTableSize) + 2));
630 0 : appendU2(m_methods, code->m_maxStack);
631 0 : appendU2(m_methods, code->m_maxLocals);
632 0 : appendU4(m_methods, static_cast< sal_uInt32 >(codeSize));
633 0 : appendStream(m_methods, code->m_code);
634 0 : appendU2(m_methods, code->m_exceptionTableLength);
635 0 : appendStream(m_methods, code->m_exceptionTable);
636 0 : appendU2(m_methods, 0);
637 : }
638 0 : if (!exceptions.empty()) {
639 0 : appendU2(m_methods, addUtf8Info("Exceptions"));
640 : appendU4(
641 : m_methods,
642 0 : static_cast< sal_uInt32 >(2 + 2 * static_cast< sal_uInt32 >(excs)));
643 0 : appendU2(m_methods, static_cast< sal_uInt16 >(excs));
644 0 : for (std::vector< OString >::const_iterator i(exceptions.begin());
645 0 : i != exceptions.end(); ++i)
646 : {
647 0 : appendU2(m_methods, addClassInfo(*i));
648 : }
649 : }
650 0 : appendSignatureAttribute(m_methods, signature);
651 0 : }
652 :
653 0 : void ClassFile::write(FileStream & file) const {
654 0 : writeU4(file, 0xCAFEBABE);
655 0 : writeU2(file, 0);
656 0 : writeU2(file, 49); // class file version of JRE 1.5
657 0 : writeU2(file, m_constantPoolCount);
658 0 : writeStream(file, m_constantPool);
659 0 : writeU2(file, static_cast< sal_uInt16 >(m_accessFlags));
660 0 : writeU2(file, m_thisClass);
661 0 : writeU2(file, m_superClass);
662 0 : writeU2(file, m_interfacesCount);
663 0 : writeStream(file, m_interfaces);
664 0 : writeU2(file, m_fieldsCount);
665 0 : writeStream(file, m_fields);
666 0 : writeU2(file, m_methodsCount);
667 0 : writeStream(file, m_methods);
668 0 : writeU2(file, m_attributesCount);
669 0 : writeStream(file, m_attributes);
670 0 : }
671 :
672 0 : sal_uInt16 ClassFile::nextConstantPoolIndex(sal_uInt16 width) {
673 : OSL_ASSERT(width == 1 || width == 2);
674 0 : if (m_constantPoolCount > SAL_MAX_UINT16 - width) {
675 0 : throw CannotDumpException("Too many constant pool items for Java class file format");
676 : }
677 0 : sal_uInt16 index = m_constantPoolCount;
678 0 : m_constantPoolCount = m_constantPoolCount + width;
679 0 : return index;
680 : }
681 :
682 0 : sal_uInt16 ClassFile::addUtf8Info(OString const & value) {
683 0 : std::map< OString, sal_uInt16 >::iterator i(m_utf8Infos.find(value));
684 0 : if (i != m_utf8Infos.end()) {
685 0 : return i->second;
686 : }
687 0 : if (value.getLength() > SAL_MAX_UINT16) {
688 0 : throw CannotDumpException("UTF-8 string too long for Java class file format");
689 : }
690 0 : sal_uInt16 index = nextConstantPoolIndex(1);
691 0 : appendU1(m_constantPool, 1);
692 0 : appendU2(m_constantPool, static_cast< sal_uInt16 >(value.getLength()));
693 0 : for (sal_Int32 j = 0; j < value.getLength(); ++j) {
694 0 : appendU1(m_constantPool, static_cast< sal_uInt8 >(value[j]));
695 : }
696 0 : if (!m_utf8Infos.insert(
697 0 : std::map< OString, sal_uInt16 >::value_type(value, index)).
698 0 : second)
699 : {
700 : OSL_ASSERT(false);
701 : }
702 0 : return index;
703 : }
704 :
705 0 : sal_uInt16 ClassFile::addClassInfo(OString const & type) {
706 0 : sal_uInt16 nameIndex = addUtf8Info(type);
707 : std::map< sal_uInt16, sal_uInt16 >::iterator i(
708 0 : m_classInfos.find(nameIndex));
709 0 : if (i != m_classInfos.end()) {
710 0 : return i->second;
711 : }
712 0 : sal_uInt16 index = nextConstantPoolIndex(1);
713 0 : appendU1(m_constantPool, 7);
714 0 : appendU2(m_constantPool, nameIndex);
715 0 : if (!m_classInfos.insert(
716 0 : std::map< sal_uInt16, sal_uInt16 >::value_type(nameIndex, index)).
717 0 : second)
718 : {
719 : OSL_ASSERT(false);
720 : }
721 0 : return index;
722 : }
723 :
724 0 : sal_uInt16 ClassFile::addStringInfo(OString const & value) {
725 0 : sal_uInt16 stringIndex = addUtf8Info(value);
726 : std::map< sal_uInt16, sal_uInt16 >::iterator i(
727 0 : m_stringInfos.find(stringIndex));
728 0 : if (i != m_stringInfos.end()) {
729 0 : return i->second;
730 : }
731 0 : sal_uInt16 index = nextConstantPoolIndex(1);
732 0 : appendU1(m_constantPool, 8);
733 0 : appendU2(m_constantPool, stringIndex);
734 0 : if (!m_stringInfos.insert(
735 0 : std::map< sal_uInt16, sal_uInt16 >::value_type(stringIndex, index)).
736 0 : second)
737 : {
738 : OSL_ASSERT(false);
739 : }
740 0 : return index;
741 : }
742 :
743 0 : sal_uInt16 ClassFile::addFieldrefInfo(
744 : OString const & type, OString const & name,
745 : OString const & descriptor)
746 : {
747 0 : sal_uInt16 classIndex = addClassInfo(type);
748 0 : sal_uInt16 nameAndTypeIndex = addNameAndTypeInfo(name, descriptor);
749 0 : sal_uInt32 key = (static_cast< sal_uInt32 >(classIndex) << 16)
750 0 : | nameAndTypeIndex;
751 0 : std::map< sal_uInt32, sal_uInt16 >::iterator i(m_fieldrefInfos.find(key));
752 0 : if (i != m_fieldrefInfos.end()) {
753 0 : return i->second;
754 : }
755 0 : sal_uInt16 index = nextConstantPoolIndex(1);
756 0 : appendU1(m_constantPool, 9);
757 0 : appendU2(m_constantPool, classIndex);
758 0 : appendU2(m_constantPool, nameAndTypeIndex);
759 0 : if (!m_fieldrefInfos.insert(
760 0 : std::map< sal_uInt32, sal_uInt16 >::value_type(key, index)).second)
761 : {
762 : OSL_ASSERT(false);
763 : }
764 0 : return index;
765 : }
766 :
767 0 : sal_uInt16 ClassFile::addMethodrefInfo(
768 : OString const & type, OString const & name,
769 : OString const & descriptor)
770 : {
771 0 : sal_uInt16 classIndex = addClassInfo(type);
772 0 : sal_uInt16 nameAndTypeIndex = addNameAndTypeInfo(name, descriptor);
773 0 : sal_uInt32 key = (static_cast< sal_uInt32 >(classIndex) << 16)
774 0 : | nameAndTypeIndex;
775 0 : std::map< sal_uInt32, sal_uInt16 >::iterator i(m_methodrefInfos.find(key));
776 0 : if (i != m_methodrefInfos.end()) {
777 0 : return i->second;
778 : }
779 0 : sal_uInt16 index = nextConstantPoolIndex(1);
780 0 : appendU1(m_constantPool, 10);
781 0 : appendU2(m_constantPool, classIndex);
782 0 : appendU2(m_constantPool, nameAndTypeIndex);
783 0 : if (!m_methodrefInfos.insert(
784 0 : std::map< sal_uInt32, sal_uInt16 >::value_type(key, index)).second)
785 : {
786 : OSL_ASSERT(false);
787 : }
788 0 : return index;
789 : }
790 :
791 0 : sal_uInt16 ClassFile::addInterfaceMethodrefInfo(
792 : OString const & type, OString const & name,
793 : OString const & descriptor)
794 : {
795 0 : sal_uInt16 classIndex = addClassInfo(type);
796 0 : sal_uInt16 nameAndTypeIndex = addNameAndTypeInfo(name, descriptor);
797 0 : sal_uInt32 key = (static_cast< sal_uInt32 >(classIndex) << 16)
798 0 : | nameAndTypeIndex;
799 : std::map< sal_uInt32, sal_uInt16 >::iterator i(
800 0 : m_interfaceMethodrefInfos.find(key));
801 0 : if (i != m_interfaceMethodrefInfos.end()) {
802 0 : return i->second;
803 : }
804 0 : sal_uInt16 index = nextConstantPoolIndex(1);
805 0 : appendU1(m_constantPool, 11);
806 0 : appendU2(m_constantPool, classIndex);
807 0 : appendU2(m_constantPool, nameAndTypeIndex);
808 0 : if (!m_interfaceMethodrefInfos.insert(
809 0 : std::map< sal_uInt32, sal_uInt16 >::value_type(key, index)).second)
810 : {
811 : OSL_ASSERT(false);
812 : }
813 0 : return index;
814 : }
815 :
816 0 : sal_uInt16 ClassFile::addNameAndTypeInfo(
817 : OString const & name, OString const & descriptor)
818 : {
819 0 : sal_uInt16 nameIndex = addUtf8Info(name);
820 0 : sal_uInt16 descriptorIndex = addUtf8Info(descriptor);
821 0 : sal_uInt32 key = (static_cast< sal_uInt32 >(nameIndex) << 16)
822 0 : | descriptorIndex;
823 : std::map< sal_uInt32, sal_uInt16 >::iterator i(
824 0 : m_nameAndTypeInfos.find(key));
825 0 : if (i != m_nameAndTypeInfos.end()) {
826 0 : return i->second;
827 : }
828 0 : sal_uInt16 index = nextConstantPoolIndex(1);
829 0 : appendU1(m_constantPool, 12);
830 0 : appendU2(m_constantPool, nameIndex);
831 0 : appendU2(m_constantPool, descriptorIndex);
832 0 : if (!m_nameAndTypeInfos.insert(
833 0 : std::map< sal_uInt32, sal_uInt16 >::value_type(key, index)).second)
834 : {
835 : OSL_ASSERT(false);
836 : }
837 0 : return index;
838 : }
839 :
840 0 : void ClassFile::appendSignatureAttribute(
841 : std::vector< unsigned char > & stream, OString const & signature)
842 : {
843 0 : if (!signature.isEmpty()) {
844 0 : appendU2(stream, addUtf8Info("Signature"));
845 0 : appendU4(stream, 2);
846 0 : appendU2(stream, addUtf8Info(signature));
847 : }
848 0 : }
849 :
850 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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