office-gobmx/codemaker/source/javamaker/classfile.cxx
Noel Grandin 59ad8d6d15 loplugin:ostr in codemaker,unoidl
Change-Id: I75f5531023f31da029491ce4a078005eebbfe59e
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/166738
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
Tested-by: Jenkins
2024-04-26 19:44:07 +02:00

828 lines
27 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include "classfile.hxx"
#include <codemaker/global.hxx>
#include <codemaker/options.hxx>
#include <codemaker/unotype.hxx>
#include <osl/diagnose.h>
#include <rtl/string.h>
#include <rtl/string.hxx>
#include <sal/types.h>
#include <map>
#include <utility>
#include <vector>
using codemaker::javamaker::ClassFile;
namespace {
void appendU1(std::vector< unsigned char > & stream, sal_uInt8 data) {
stream.push_back(static_cast< unsigned char >(data));
}
void appendU2(std::vector< unsigned char > & stream, sal_uInt16 data) {
stream.push_back(static_cast< unsigned char >(data >> 8));
stream.push_back(static_cast< unsigned char >(data & 0xFF));
}
void appendU4(std::vector< unsigned char > & stream, sal_uInt32 data) {
stream.push_back(static_cast< unsigned char >(data >> 24));
stream.push_back(static_cast< unsigned char >((data >> 16) & 0xFF));
stream.push_back(static_cast< unsigned char >((data >> 8) & 0xFF));
stream.push_back(static_cast< unsigned char >(data & 0xFF));
}
void appendU8(std::vector< unsigned char > & stream, sal_uInt64 data) {
stream.push_back(static_cast< unsigned char >(data >> 56));
stream.push_back(static_cast< unsigned char >((data >> 48) & 0xFF));
stream.push_back(static_cast< unsigned char >((data >> 40) & 0xFF));
stream.push_back(static_cast< unsigned char >((data >> 32) & 0xFF));
stream.push_back(static_cast< unsigned char >((data >> 24) & 0xFF));
stream.push_back(static_cast< unsigned char >((data >> 16) & 0xFF));
stream.push_back(static_cast< unsigned char >((data >> 8) & 0xFF));
stream.push_back(static_cast< unsigned char >(data & 0xFF));
}
void appendStream(
std::vector< unsigned char > & stream,
std::vector< unsigned char > const & data)
{
stream.insert(stream.end(), data.begin(), data.end());
}
void write(FileStream & file, void const * buffer, sal_uInt64 size) {
if (!file.write(buffer, size))
throw CannotDumpException(u"Error writing file"_ustr);
}
void writeU2(FileStream & file, sal_uInt16 data) {
unsigned char buf[] = {
static_cast< unsigned char >(data >> 8),
static_cast< unsigned char >(data & 0xFF) };
write(file, buf, sizeof buf);
}
void writeU4(FileStream & file, sal_uInt32 data) {
unsigned char buf[] = {
static_cast< unsigned char >(data >> 24),
static_cast< unsigned char >((data >> 16) & 0xFF),
static_cast< unsigned char >((data >> 8) & 0xFF),
static_cast< unsigned char >(data & 0xFF) };
write(file, buf, sizeof buf);
}
void writeStream(FileStream & file, std::vector< unsigned char > const & stream)
{
std::vector< unsigned char >::size_type n = stream.size();
static_assert(
sizeof (std::vector< unsigned char >::size_type)
<= sizeof (sal_uInt64), "must be at most equal in size");
// both unsigned integral, so sizeof is a practically sufficient
// approximation of std::numeric_limits<T1>::max() <=
// std::numeric_limits<T2>::max()
if (n != 0) {
write(file, stream.data(), static_cast< sal_uInt64 >(n));
}
}
}
ClassFile::Code::~Code() {}
void ClassFile::Code::instrAastore() {
// aastore:
appendU1(m_code, 0x53);
}
void ClassFile::Code::instrAconstNull() {
// aconst_null:
appendU1(m_code, 0x01);
}
void ClassFile::Code::instrAnewarray(OString const & type) {
// anewarray <indexbyte1> <indexbyte2>:
appendU1(m_code, 0xBD);
appendU2(m_code, m_classFile.addClassInfo(type));
}
void ClassFile::Code::instrAreturn() {
// areturn:
appendU1(m_code, 0xB0);
}
void ClassFile::Code::instrAthrow() {
// athrow:
appendU1(m_code, 0xBF);
}
void ClassFile::Code::instrCheckcast(OString const & type) {
// checkcast <indexbyte1> <indexbyte2>:
appendU1(m_code, 0xC0);
appendU2(m_code, m_classFile.addClassInfo(type));
}
void ClassFile::Code::instrDup() {
// dup:
appendU1(m_code, 0x59);
}
void ClassFile::Code::instrGetstatic(
OString const & type, OString const & name,
OString const & descriptor)
{
// getstatic <indexbyte1> <indexbyte2>:
appendU1(m_code, 0xB2);
appendU2(m_code, m_classFile.addFieldrefInfo(type, name, descriptor));
}
ClassFile::Code::Branch ClassFile::Code::instrIfAcmpne() {
// if_acmpne <branchbyte1> <branchbyte2>:
Branch branch = m_code.size();
appendU1(m_code, 0xA6);
appendU2(m_code, 0);
return branch;
}
ClassFile::Code::Branch ClassFile::Code::instrIfeq() {
// ifeq <branchbyte1> <branchbyte2>:
Branch branch = m_code.size();
appendU1(m_code, 0x99);
appendU2(m_code, 0);
return branch;
}
ClassFile::Code::Branch ClassFile::Code::instrIfnull() {
// ifnull <branchbyte1> <branchbyte2>:
Branch branch = m_code.size();
appendU1(m_code, 0xC6);
appendU2(m_code, 0);
return branch;
}
void ClassFile::Code::instrInstanceof(OString const & type) {
// instanceof <indexbyte1> <indexbyte2>:
appendU1(m_code, 0xC1);
appendU2(m_code, m_classFile.addClassInfo(type));
}
void ClassFile::Code::instrInvokeinterface(
OString const & type, OString const & name,
OString const & descriptor, sal_uInt8 args)
{
// invokeinterface <indexbyte1> <indexbyte2> <nargs> 0:
appendU1(m_code, 0xB9);
appendU2(
m_code, m_classFile.addInterfaceMethodrefInfo(type, name, descriptor));
appendU1(m_code, args);
appendU1(m_code, 0);
}
void ClassFile::Code::instrInvokespecial(
OString const & type, OString const & name,
OString const & descriptor)
{
// invokespecial <indexbyte1> <indexbyte2>:
appendU1(m_code, 0xB7);
appendU2(m_code, m_classFile.addMethodrefInfo(type, name, descriptor));
}
void ClassFile::Code::instrInvokestatic(
OString const & type, OString const & name,
OString const & descriptor)
{
// invokestatic <indexbyte1> <indexbyte2>:
appendU1(m_code, 0xB8);
appendU2(m_code, m_classFile.addMethodrefInfo(type, name, descriptor));
}
void ClassFile::Code::instrInvokevirtual(
OString const & type, OString const & name,
OString const & descriptor)
{
// invokevirtual <indexbyte1> <indexbyte2>:
appendU1(m_code, 0xB6);
appendU2(m_code, m_classFile.addMethodrefInfo(type, name, descriptor));
}
void ClassFile::Code::instrLookupswitch(
Code const * defaultBlock,
std::vector< std::pair< sal_Int32, Code * > > const & blocks)
{
// lookupswitch <0--3 byte pad> <defaultbyte1> <defaultbyte2> <defaultbyte3>
// <defaultbyte4> <npairs1> <npairs2> <npairs3> <npairs4>
// <match--offset pairs...>:
std::vector< std::pair< sal_Int32, Code * > >::size_type size = blocks.size();
if (size > SAL_MAX_INT32) {
throw CannotDumpException(u"Lookup-switch too large for Java class file format"_ustr);
}
Position pos1 = m_code.size();
appendU1(m_code, 0xAB);
int pad = (pos1 + 1) % 4;
for (int i = 0; i < pad; ++i) {
appendU1(m_code, 0);
}
Position pos2 = pos1 + 1 + pad + 8 + blocks.size() * 8; //FIXME: overflow
appendU4(m_code, static_cast< sal_uInt32 >(pos2 - pos1)); //FIXME: overflow
pos2 += defaultBlock->m_code.size(); //FIXME: overflow
appendU4(m_code, static_cast< sal_uInt32 >(size));
for (const std::pair< sal_Int32, Code * >& pair : blocks)
{
appendU4(m_code, static_cast< sal_uInt32 >(pair.first));
appendU4(m_code, static_cast< sal_uInt32 >(pos2 - pos1));
//FIXME: overflow
pos2 += pair.second->m_code.size(); //FIXME: overflow
}
appendStream(m_code, defaultBlock->m_code);
for (const std::pair< sal_Int32, Code * >& pair : blocks)
{
appendStream(m_code, pair.second->m_code);
}
}
void ClassFile::Code::instrNew(OString const & type) {
// new <indexbyte1> <indexbyte2>:
appendU1(m_code, 0xBB);
appendU2(m_code, m_classFile.addClassInfo(type));
}
void ClassFile::Code::instrNewarray(codemaker::UnoType::Sort sort) {
OSL_ASSERT(
sort >= codemaker::UnoType::Sort::Boolean
&& sort <= codemaker::UnoType::Sort::Char);
// newarray <atype>:
appendU1(m_code, 0xBC);
static sal_uInt8 const atypes[static_cast<int>(codemaker::UnoType::Sort::Char)] = {
0x04, 0x08, 0x09, 0x09, 0x0A, 0x0A, 0x0B, 0x0B, 0x06, 0x07, 0x05 };
appendU1(m_code, atypes[static_cast<int>(sort) - 1]);
}
void ClassFile::Code::instrPop() {
// pop:
appendU1(m_code, 0x57);
}
void ClassFile::Code::instrPutfield(
OString const & type, OString const & name,
OString const & descriptor)
{
// putfield <indexbyte1> <indexbyte2>:
appendU1(m_code, 0xB5);
appendU2(m_code, m_classFile.addFieldrefInfo(type, name, descriptor));
}
void ClassFile::Code::instrPutstatic(
OString const & type, OString const & name,
OString const & descriptor)
{
// putstatic <indexbyte1> <indexbyte2>:
appendU1(m_code, 0xB3);
appendU2(m_code, m_classFile.addFieldrefInfo(type, name, descriptor));
}
void ClassFile::Code::instrReturn() {
// return:
appendU1(m_code, 0xB1);
}
void ClassFile::Code::instrSwap() {
// swap:
appendU1(m_code, 0x5F);
}
void ClassFile::Code::instrTableswitch(
Code const * defaultBlock, sal_Int32 low,
std::vector< std::unique_ptr<Code> > const & blocks)
{
// tableswitch <0--3 byte pad> <defaultbyte1> <defaultbyte2> <defaultbyte3>
// <defaultbyte4> <lowbyte1> <lowbyte2> <lowbyte3> <lowbyte4> <highbyte1>
// <highbyte2> <highbyte3> <highbyte4> <jump offsets...>:
Position pos1 = m_code.size();
appendU1(m_code, 0xAA);
int pad = (pos1 + 1) % 4;
for (int i = 0; i < pad; ++i) {
appendU1(m_code, 0);
}
std::vector< Code * >::size_type size = blocks.size();
Position pos2 = pos1 + 1 + pad + 12 + size * 4; //FIXME: overflow
sal_uInt32 defaultOffset = static_cast< sal_uInt32 >(pos2 - pos1);
//FIXME: overflow
appendU4(m_code, defaultOffset);
pos2 += defaultBlock->m_code.size(); //FIXME: overflow
appendU4(m_code, static_cast< sal_uInt32 >(low));
appendU4(m_code, static_cast< sal_uInt32 >(low + (size - 1)));
for (std::unique_ptr<Code> const & pCode : blocks)
{
if (pCode == nullptr) {
appendU4(m_code, defaultOffset);
} else {
appendU4(m_code, static_cast< sal_uInt32 >(pos2 - pos1));
//FIXME: overflow
pos2 += pCode->m_code.size(); //FIXME: overflow
}
}
appendStream(m_code, defaultBlock->m_code);
for (std::unique_ptr<Code> const & pCode : blocks)
{
if (pCode != nullptr) {
appendStream(m_code, pCode->m_code);
}
}
}
void ClassFile::Code::loadIntegerConstant(sal_Int32 value) {
if (value >= -1 && value <= 5) {
// iconst_<i>:
appendU1(m_code, static_cast< sal_uInt8 >(0x02 + value + 1));
} else if (value >= -128 && value <= 127) {
// bipush <byte>:
appendU1(m_code, 0x10);
appendU1(m_code, static_cast< sal_uInt8 >(value));
} else if (value >= -32768 && value <= 32767) {
// sipush <byte1> <byte2>:
appendU1(m_code, 0x11);
appendU2(m_code, static_cast< sal_uInt16 >(value));
} else {
ldc(m_classFile.addIntegerInfo(value));
}
}
void ClassFile::Code::loadStringConstant(OString const & value) {
ldc(m_classFile.addStringInfo(value));
}
void ClassFile::Code::loadLocalInteger(sal_uInt16 index) {
accessLocal(index, 0x1A, 0x15); // iload_<n>, iload
}
void ClassFile::Code::loadLocalLong(sal_uInt16 index) {
accessLocal(index, 0x1E, 0x16); // load_<n>, load
}
void ClassFile::Code::loadLocalFloat(sal_uInt16 index) {
accessLocal(index, 0x22, 0x17); // load_<n>, load
}
void ClassFile::Code::loadLocalDouble(sal_uInt16 index) {
accessLocal(index, 0x26, 0x18); // load_<n>, load
}
void ClassFile::Code::loadLocalReference(sal_uInt16 index) {
accessLocal(index, 0x2A, 0x19); // aload_<n>, aload
}
void ClassFile::Code::storeLocalReference(sal_uInt16 index) {
accessLocal(index, 0x4B, 0x3A); // astore_<n>, astore
}
void ClassFile::Code::branchHere(Branch branch) {
std::vector< unsigned char >::size_type n = m_code.size();
OSL_ASSERT(n > branch && n - branch <= SAL_MAX_INT16);
n -= branch;
m_code[branch + 1] = static_cast< sal_uInt8 >(n >> 8);
m_code[branch + 2] = static_cast< sal_uInt8 >(n & 0xFF);
}
void ClassFile::Code::addException(
Position start, Position end, Position handler, OString const & type)
{
OSL_ASSERT(start < end && end <= m_code.size() && handler <= m_code.size());
if (m_exceptionTableLength == SAL_MAX_UINT16) {
throw CannotDumpException(u"Too many exception handlers for Java class file format"_ustr);
}
++m_exceptionTableLength;
appendU2(m_exceptionTable, static_cast< sal_uInt16 >(start));
//FIXME: overflow
appendU2(m_exceptionTable, static_cast< sal_uInt16 >(end));
//FIXME: overflow
appendU2(m_exceptionTable, static_cast< sal_uInt16 >(handler));
//FIXME: overflow
appendU2(m_exceptionTable, m_classFile.addClassInfo(type));
}
ClassFile::Code::Position ClassFile::Code::getPosition() const {
return m_code.size();
}
ClassFile::Code::Code(ClassFile & classFile)
: m_classFile(classFile)
, m_maxStack(0)
, m_maxLocals(0)
, m_exceptionTableLength(0)
{}
void ClassFile::Code::ldc(sal_uInt16 index) {
if (index <= 0xFF) {
// ldc <index>:
appendU1(m_code, 0x12);
appendU1(m_code, static_cast< sal_uInt8 >(index));
} else {
// ldc_w <indexbyte1> <indexbyte2>:
appendU1(m_code, 0x13);
appendU2(m_code, index);
}
}
void ClassFile::Code::accessLocal(
sal_uInt16 index, sal_uInt8 fastOp, sal_uInt8 normalOp)
{
if (index <= 3) {
// ...load/store_<n>:
appendU1(m_code, static_cast< sal_uInt8 >(fastOp + index));
} else if (index <= 0xFF) {
// ...load/store <index>:
appendU1(m_code, normalOp);
appendU1(m_code, static_cast< sal_uInt8 >(index));
} else {
// wide ...load/store <indexbyte1> <indexbyte2>:
appendU1(m_code, 0xC4);
appendU1(m_code, normalOp);
appendU2(m_code, index);
}
}
ClassFile::ClassFile(
AccessFlags accessFlags, OString const & thisClass,
OString const & superClass, OString const & signature):
m_constantPoolCount(1), m_accessFlags(accessFlags), m_interfacesCount(0),
m_fieldsCount(0), m_methodsCount(0), m_attributesCount(0)
{
m_thisClass = addClassInfo(thisClass);
m_superClass = addClassInfo(superClass);
if (!signature.isEmpty()) {
++m_attributesCount;
appendU2(m_attributes, addUtf8Info("Signature"_ostr));
appendU4(m_attributes, 2);
appendU2(m_attributes, addUtf8Info(signature));
}
}
ClassFile::~ClassFile() {}
std::unique_ptr<ClassFile::Code> ClassFile::newCode() {
return std::unique_ptr<Code>(new Code(*this));
}
sal_uInt16 ClassFile::addIntegerInfo(sal_Int32 value) {
std::map< sal_Int32, sal_uInt16 >::iterator i(m_integerInfos.find(value));
if (i != m_integerInfos.end()) {
return i->second;
}
sal_uInt16 index = nextConstantPoolIndex(1);
appendU1(m_constantPool, 3);
appendU4(m_constantPool, static_cast< sal_uInt32 >(value));
if (!m_integerInfos.emplace(value, index).second)
{
OSL_ASSERT(false);
}
return index;
}
sal_uInt16 ClassFile::addFloatInfo(float value) {
std::map< float, sal_uInt16 >::iterator i(m_floatInfos.find(value));
if (i != m_floatInfos.end()) {
return i->second;
}
sal_uInt16 index = nextConstantPoolIndex(1);
appendU1(m_constantPool, 4);
union { float floatBytes; sal_uInt32 uint32Bytes; } bytes;
bytes.floatBytes = value;
appendU4(m_constantPool, bytes.uint32Bytes);
if (!m_floatInfos.emplace(value, index).second)
{
OSL_ASSERT(false);
}
return index;
}
sal_uInt16 ClassFile::addLongInfo(sal_Int64 value) {
std::map< sal_Int64, sal_uInt16 >::iterator i(m_longInfos.find(value));
if (i != m_longInfos.end()) {
return i->second;
}
sal_uInt16 index = nextConstantPoolIndex(2);
appendU1(m_constantPool, 5);
appendU8(m_constantPool, static_cast< sal_uInt64 >(value));
if (!m_longInfos.emplace(value, index).second)
{
OSL_ASSERT(false);
}
return index;
}
sal_uInt16 ClassFile::addDoubleInfo(double value) {
std::map< double, sal_uInt16 >::iterator i(m_doubleInfos.find(value));
if (i != m_doubleInfos.end()) {
return i->second;
}
sal_uInt16 index = nextConstantPoolIndex(2);
appendU1(m_constantPool, 6);
union { double doubleBytes; sal_uInt64 uint64Bytes; } bytes;
bytes.doubleBytes = value;
appendU8(m_constantPool, bytes.uint64Bytes);
if (!m_doubleInfos.emplace(value, index).second)
{
OSL_ASSERT(false);
}
return index;
}
void ClassFile::addInterface(OString const & interface) {
if (m_interfacesCount == SAL_MAX_UINT16) {
throw CannotDumpException(u"Too many interfaces for Java class file format"_ustr);
}
++m_interfacesCount;
appendU2(m_interfaces, addClassInfo(interface));
}
void ClassFile::addField(
AccessFlags accessFlags, OString const & name,
OString const & descriptor, sal_uInt16 constantValueIndex,
OString const & signature)
{
if (m_fieldsCount == SAL_MAX_UINT16) {
throw CannotDumpException(u"Too many fields for Java class file format"_ustr);
}
++m_fieldsCount;
appendU2(m_fields, static_cast< sal_uInt16 >(accessFlags));
appendU2(m_fields, addUtf8Info(name));
appendU2(m_fields, addUtf8Info(descriptor));
appendU2(
m_fields,
((constantValueIndex == 0 ? 0 : 1)
+ (signature.isEmpty() ? 0 : 1)));
if (constantValueIndex != 0) {
appendU2(m_fields, addUtf8Info("ConstantValue"_ostr));
appendU4(m_fields, 2);
appendU2(m_fields, constantValueIndex);
}
appendSignatureAttribute(m_fields, signature);
}
void ClassFile::addMethod(
AccessFlags accessFlags, OString const & name,
OString const & descriptor, Code const * code,
std::vector< OString > const & exceptions,
OString const & signature)
{
if (m_methodsCount == SAL_MAX_UINT16) {
throw CannotDumpException(u"Too many methods for Java class file format"_ustr);
}
++m_methodsCount;
appendU2(m_methods, static_cast< sal_uInt16 >(accessFlags));
appendU2(m_methods, addUtf8Info(name));
appendU2(m_methods, addUtf8Info(descriptor));
std::vector< OString >::size_type excs = exceptions.size();
if (excs > SAL_MAX_UINT16) {
throw CannotDumpException(u"Too many exception specifications for Java class file format"_ustr);
}
appendU2(
m_methods,
((code == nullptr ? 0 : 1) + (exceptions.empty() ? 0 : 1)
+ (signature.isEmpty() ? 0 : 1)));
if (code != nullptr) {
std::vector< unsigned char >::size_type codeSize = code->m_code.size();
std::vector< unsigned char >::size_type exceptionTableSize
= code->m_exceptionTable.size();
if (codeSize > SAL_MAX_UINT32 - (2 + 2 + 4 + 2 + 2)
|| (exceptionTableSize
> (SAL_MAX_UINT32 - (2 + 2 + 4 + 2 + 2)
- static_cast< sal_uInt32 >(codeSize))))
{
throw CannotDumpException(u"Code block is too big for Java class file format"_ustr);
}
appendU2(m_methods, addUtf8Info("Code"_ostr));
appendU4(
m_methods,
(2 + 2 + 4 + static_cast< sal_uInt32 >(codeSize) + 2
+ static_cast< sal_uInt32 >(exceptionTableSize) + 2));
appendU2(m_methods, code->m_maxStack);
appendU2(m_methods, code->m_maxLocals);
appendU4(m_methods, static_cast< sal_uInt32 >(codeSize));
appendStream(m_methods, code->m_code);
appendU2(m_methods, code->m_exceptionTableLength);
appendStream(m_methods, code->m_exceptionTable);
appendU2(m_methods, 0);
}
if (!exceptions.empty()) {
appendU2(m_methods, addUtf8Info("Exceptions"_ostr));
appendU4(
m_methods,
static_cast< sal_uInt32 >(2 + 2 * static_cast< sal_uInt32 >(excs)));
appendU2(m_methods, static_cast< sal_uInt16 >(excs));
for (const OString& ex : exceptions)
{
appendU2(m_methods, addClassInfo(ex));
}
}
appendSignatureAttribute(m_methods, signature);
}
void ClassFile::write(FileStream & file) const {
writeU4(file, 0xCAFEBABE);
writeU2(file, 0);
writeU2(file, 49); // class file version of JRE 1.5
writeU2(file, m_constantPoolCount);
writeStream(file, m_constantPool);
writeU2(file, static_cast< sal_uInt16 >(m_accessFlags));
writeU2(file, m_thisClass);
writeU2(file, m_superClass);
writeU2(file, m_interfacesCount);
writeStream(file, m_interfaces);
writeU2(file, m_fieldsCount);
writeStream(file, m_fields);
writeU2(file, m_methodsCount);
writeStream(file, m_methods);
writeU2(file, m_attributesCount);
writeStream(file, m_attributes);
}
sal_uInt16 ClassFile::nextConstantPoolIndex(sal_uInt16 width) {
OSL_ASSERT(width == 1 || width == 2);
if (m_constantPoolCount > SAL_MAX_UINT16 - width) {
throw CannotDumpException(u"Too many constant pool items for Java class file format"_ustr);
}
sal_uInt16 index = m_constantPoolCount;
m_constantPoolCount = m_constantPoolCount + width;
return index;
}
sal_uInt16 ClassFile::addUtf8Info(OString const & value) {
std::map< OString, sal_uInt16 >::iterator i(m_utf8Infos.find(value));
if (i != m_utf8Infos.end()) {
return i->second;
}
if (value.getLength() > SAL_MAX_UINT16) {
throw CannotDumpException(u"UTF-8 string too long for Java class file format"_ustr);
}
sal_uInt16 index = nextConstantPoolIndex(1);
appendU1(m_constantPool, 1);
appendU2(m_constantPool, static_cast< sal_uInt16 >(value.getLength()));
for (sal_Int32 j = 0; j < value.getLength(); ++j) {
appendU1(m_constantPool, static_cast< sal_uInt8 >(value[j]));
}
if (!m_utf8Infos.emplace(value, index).second)
{
OSL_ASSERT(false);
}
return index;
}
sal_uInt16 ClassFile::addClassInfo(OString const & type) {
sal_uInt16 nameIndex = addUtf8Info(type);
std::map< sal_uInt16, sal_uInt16 >::iterator i(
m_classInfos.find(nameIndex));
if (i != m_classInfos.end()) {
return i->second;
}
sal_uInt16 index = nextConstantPoolIndex(1);
appendU1(m_constantPool, 7);
appendU2(m_constantPool, nameIndex);
if (!m_classInfos.emplace(nameIndex, index).second)
{
OSL_ASSERT(false);
}
return index;
}
sal_uInt16 ClassFile::addStringInfo(OString const & value) {
sal_uInt16 stringIndex = addUtf8Info(value);
std::map< sal_uInt16, sal_uInt16 >::iterator i(
m_stringInfos.find(stringIndex));
if (i != m_stringInfos.end()) {
return i->second;
}
sal_uInt16 index = nextConstantPoolIndex(1);
appendU1(m_constantPool, 8);
appendU2(m_constantPool, stringIndex);
if (!m_stringInfos.emplace(stringIndex, index).second)
{
OSL_ASSERT(false);
}
return index;
}
sal_uInt16 ClassFile::addFieldrefInfo(
OString const & type, OString const & name,
OString const & descriptor)
{
sal_uInt16 classIndex = addClassInfo(type);
sal_uInt16 nameAndTypeIndex = addNameAndTypeInfo(name, descriptor);
sal_uInt32 key = (static_cast< sal_uInt32 >(classIndex) << 16)
| nameAndTypeIndex;
std::map< sal_uInt32, sal_uInt16 >::iterator i(m_fieldrefInfos.find(key));
if (i != m_fieldrefInfos.end()) {
return i->second;
}
sal_uInt16 index = nextConstantPoolIndex(1);
appendU1(m_constantPool, 9);
appendU2(m_constantPool, classIndex);
appendU2(m_constantPool, nameAndTypeIndex);
if (!m_fieldrefInfos.emplace(key, index).second)
{
OSL_ASSERT(false);
}
return index;
}
sal_uInt16 ClassFile::addMethodrefInfo(
OString const & type, OString const & name,
OString const & descriptor)
{
sal_uInt16 classIndex = addClassInfo(type);
sal_uInt16 nameAndTypeIndex = addNameAndTypeInfo(name, descriptor);
sal_uInt32 key = (static_cast< sal_uInt32 >(classIndex) << 16)
| nameAndTypeIndex;
std::map< sal_uInt32, sal_uInt16 >::iterator i(m_methodrefInfos.find(key));
if (i != m_methodrefInfos.end()) {
return i->second;
}
sal_uInt16 index = nextConstantPoolIndex(1);
appendU1(m_constantPool, 10);
appendU2(m_constantPool, classIndex);
appendU2(m_constantPool, nameAndTypeIndex);
if (!m_methodrefInfos.emplace(key, index).second)
{
OSL_ASSERT(false);
}
return index;
}
sal_uInt16 ClassFile::addInterfaceMethodrefInfo(
OString const & type, OString const & name,
OString const & descriptor)
{
sal_uInt16 classIndex = addClassInfo(type);
sal_uInt16 nameAndTypeIndex = addNameAndTypeInfo(name, descriptor);
sal_uInt32 key = (static_cast< sal_uInt32 >(classIndex) << 16)
| nameAndTypeIndex;
std::map< sal_uInt32, sal_uInt16 >::iterator i(
m_interfaceMethodrefInfos.find(key));
if (i != m_interfaceMethodrefInfos.end()) {
return i->second;
}
sal_uInt16 index = nextConstantPoolIndex(1);
appendU1(m_constantPool, 11);
appendU2(m_constantPool, classIndex);
appendU2(m_constantPool, nameAndTypeIndex);
if (!m_interfaceMethodrefInfos.emplace(key, index).second)
{
OSL_ASSERT(false);
}
return index;
}
sal_uInt16 ClassFile::addNameAndTypeInfo(
OString const & name, OString const & descriptor)
{
sal_uInt16 nameIndex = addUtf8Info(name);
sal_uInt16 descriptorIndex = addUtf8Info(descriptor);
sal_uInt32 key = (static_cast< sal_uInt32 >(nameIndex) << 16)
| descriptorIndex;
std::map< sal_uInt32, sal_uInt16 >::iterator i(
m_nameAndTypeInfos.find(key));
if (i != m_nameAndTypeInfos.end()) {
return i->second;
}
sal_uInt16 index = nextConstantPoolIndex(1);
appendU1(m_constantPool, 12);
appendU2(m_constantPool, nameIndex);
appendU2(m_constantPool, descriptorIndex);
if (!m_nameAndTypeInfos.emplace(key, index).second)
{
OSL_ASSERT(false);
}
return index;
}
void ClassFile::appendSignatureAttribute(
std::vector< unsigned char > & stream, OString const & signature)
{
if (!signature.isEmpty()) {
appendU2(stream, addUtf8Info("Signature"_ostr));
appendU4(stream, 2);
appendU2(stream, addUtf8Info(signature));
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */