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ProGuardCORE is a free library to read, analyze, modify, and write Java class files.
/*
* ProGuardCORE -- library to process Java bytecode.
*
* Copyright (c) 2002-2020 Guardsquare NV
*
* Licensed 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
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package proguard.classfile.io;
import proguard.classfile.*;
import proguard.classfile.attribute.*;
import proguard.classfile.attribute.annotation.*;
import proguard.classfile.attribute.annotation.target.*;
import proguard.classfile.attribute.annotation.target.visitor.*;
import proguard.classfile.attribute.annotation.visitor.*;
import proguard.classfile.attribute.module.*;
import proguard.classfile.attribute.module.visitor.*;
import proguard.classfile.attribute.preverification.*;
import proguard.classfile.attribute.preverification.visitor.*;
import proguard.classfile.attribute.visitor.*;
import proguard.classfile.constant.*;
import proguard.classfile.constant.visitor.ConstantVisitor;
import proguard.classfile.util.*;
import proguard.classfile.visitor.*;
import proguard.io.RuntimeDataInput;
import java.io.DataInput;
/**
* This {@link ClassVisitor} fills out the {@link ProgramClass} instances that it visits with data
* from the given {@link DataInput} object.
*
* @author Eric Lafortune
*/
public class ProgramClassReader
implements ClassVisitor,
MemberVisitor,
ConstantVisitor,
AttributeVisitor,
BootstrapMethodInfoVisitor,
RecordComponentInfoVisitor,
InnerClassesInfoVisitor,
ExceptionInfoVisitor,
StackMapFrameVisitor,
VerificationTypeVisitor,
LineNumberInfoVisitor,
ParameterInfoVisitor,
LocalVariableInfoVisitor,
LocalVariableTypeInfoVisitor,
RequiresInfoVisitor,
ExportsInfoVisitor,
OpensInfoVisitor,
ProvidesInfoVisitor,
AnnotationVisitor,
TypeAnnotationVisitor,
TargetInfoVisitor,
TypePathInfoVisitor,
LocalVariableTargetElementVisitor,
ElementValueVisitor
{
private final RuntimeDataInput dataInput;
private final boolean ignoreStackMapAttributes;
/**
* Creates a new ProgramClassReader for reading from the given DataInput.
*/
public ProgramClassReader(DataInput dataInput)
{
this(dataInput, false);
}
/**
* Creates a new ProgramClassReader for reading from the given DataInput,
* optionally treating stack map attributes as unknown attributes.
*/
public ProgramClassReader(DataInput dataInput,
boolean ignoreStackMapAttributes)
{
this.dataInput = new RuntimeDataInput(dataInput);
this.ignoreStackMapAttributes = ignoreStackMapAttributes;
}
// Implementations for ClassVisitor.
@Override
public void visitAnyClass(Clazz clazz) { }
@Override
public void visitProgramClass(ProgramClass programClass)
{
// Read and check the magic number.
int u4magic = dataInput.readInt();
ClassUtil.checkMagicNumber(u4magic);
// Read and check the version numbers.
int u2minorVersion = dataInput.readUnsignedShort();
int u2majorVersion = dataInput.readUnsignedShort();
programClass.u4version = ClassUtil.internalClassVersion(u2majorVersion,
u2minorVersion);
ClassUtil.checkVersionNumbers(programClass.u4version);
// Read the constant pool. Note that the first entry is not used.
programClass.u2constantPoolCount = dataInput.readUnsignedShort();
programClass.constantPool = new Constant[programClass.u2constantPoolCount];
for (int index = 1; index < programClass.u2constantPoolCount; index++)
{
Constant constant = createConstant();
constant.accept(programClass, this);
programClass.constantPool[index] = constant;
// Long constants and double constants take up two entries in the
// constant pool.
int tag = constant.getTag();
if (tag == Constant.LONG ||
tag == Constant.DOUBLE)
{
programClass.constantPool[++index] = null;
}
}
// Read the general class information.
programClass.u2accessFlags = dataInput.readUnsignedShort();
programClass.u2thisClass = dataInput.readUnsignedShort();
programClass.u2superClass = dataInput.readUnsignedShort();
// Read the interfaces.
programClass.u2interfacesCount = dataInput.readUnsignedShort();
programClass.u2interfaces = readUnsignedShorts(programClass.u2interfacesCount);
// Read the fields.
programClass.u2fieldsCount = dataInput.readUnsignedShort();
programClass.fields = new ProgramField[programClass.u2fieldsCount];
for (int index = 0; index < programClass.u2fieldsCount; index++)
{
ProgramField programField = new ProgramField();
this.visitProgramField(programClass, programField);
programClass.fields[index] = programField;
}
// Read the methods.
programClass.u2methodsCount = dataInput.readUnsignedShort();
programClass.methods = new ProgramMethod[programClass.u2methodsCount];
for (int index = 0; index < programClass.u2methodsCount; index++)
{
ProgramMethod programMethod = new ProgramMethod();
this.visitProgramMethod(programClass, programMethod);
programClass.methods[index] = programMethod;
}
// Read the class attributes.
programClass.u2attributesCount = dataInput.readUnsignedShort();
programClass.attributes = new Attribute[programClass.u2attributesCount];
for (int index = 0; index < programClass.u2attributesCount; index++)
{
Attribute attribute = createAttribute(programClass);
attribute.accept(programClass, this);
programClass.attributes[index] = attribute;
}
}
// Implementations for MemberVisitor.
public void visitProgramField(ProgramClass programClass, ProgramField programField)
{
// Read the general field information.
programField.u2accessFlags = dataInput.readUnsignedShort();
programField.u2nameIndex = dataInput.readUnsignedShort();
programField.u2descriptorIndex = dataInput.readUnsignedShort();
// Read the field attributes.
programField.u2attributesCount = dataInput.readUnsignedShort();
programField.attributes = new Attribute[programField.u2attributesCount];
for (int index = 0; index < programField.u2attributesCount; index++)
{
Attribute attribute = createAttribute(programClass);
attribute.accept(programClass, programField, this);
programField.attributes[index] = attribute;
}
}
public void visitProgramMethod(ProgramClass programClass, ProgramMethod programMethod)
{
// Read the general method information.
programMethod.u2accessFlags = dataInput.readUnsignedShort();
programMethod.u2nameIndex = dataInput.readUnsignedShort();
programMethod.u2descriptorIndex = dataInput.readUnsignedShort();
// Read the method attributes.
programMethod.u2attributesCount = dataInput.readUnsignedShort();
programMethod.attributes = new Attribute[programMethod.u2attributesCount];
for (int index = 0; index < programMethod.u2attributesCount; index++)
{
Attribute attribute = createAttribute(programClass);
attribute.accept(programClass, programMethod, this);
programMethod.attributes[index] = attribute;
}
}
public void visitLibraryMember(LibraryClass libraryClass, LibraryMember libraryMember)
{
}
// Implementations for ConstantVisitor.
public void visitIntegerConstant(Clazz clazz, IntegerConstant integerConstant)
{
integerConstant.u4value = dataInput.readInt();
}
public void visitLongConstant(Clazz clazz, LongConstant longConstant)
{
longConstant.u8value = dataInput.readLong();
}
public void visitFloatConstant(Clazz clazz, FloatConstant floatConstant)
{
floatConstant.f4value = dataInput.readFloat();
}
public void visitDoubleConstant(Clazz clazz, DoubleConstant doubleConstant)
{
doubleConstant.f8value = dataInput.readDouble();
}
public void visitPrimitiveArrayConstant(Clazz clazz, PrimitiveArrayConstant primitiveArrayConstant)
{
char u2primitiveType = dataInput.readChar();
int u4length = dataInput.readInt();
switch (u2primitiveType)
{
case TypeConstants.BOOLEAN:
{
boolean[] values = new boolean[u4length];
for (int index = 0; index < u4length; index++)
{
values[index] = dataInput.readBoolean();
}
primitiveArrayConstant.values = values;
break;
}
case TypeConstants.BYTE:
{
byte[] values = new byte[u4length];
dataInput.readFully(values);
primitiveArrayConstant.values = values;
break;
}
case TypeConstants.CHAR:
{
char[] values = new char[u4length];
for (int index = 0; index < u4length; index++)
{
values[index] = dataInput.readChar();
}
primitiveArrayConstant.values = values;
break;
}
case TypeConstants.SHORT:
{
short[] values = new short[u4length];
for (int index = 0; index < u4length; index++)
{
values[index] = dataInput.readShort();
}
primitiveArrayConstant.values = values;
break;
}
case TypeConstants.INT:
{
int[] values = new int[u4length];
for (int index = 0; index < u4length; index++)
{
values[index] = dataInput.readInt();
}
primitiveArrayConstant.values = values;
break;
}
case TypeConstants.FLOAT:
{
float[] values = new float[u4length];
for (int index = 0; index < u4length; index++)
{
values[index] = dataInput.readFloat();
}
primitiveArrayConstant.values = values;
break;
}
case TypeConstants.LONG:
{
long[] values = new long[u4length];
for (int index = 0; index < u4length; index++)
{
values[index] = dataInput.readLong();
}
primitiveArrayConstant.values = values;
break;
}
case TypeConstants.DOUBLE:
{
double[] values = new double[u4length];
for (int index = 0; index < u4length; index++)
{
values[index] = dataInput.readDouble();
}
primitiveArrayConstant.values = values;
break;
}
}
}
public void visitStringConstant(Clazz clazz, StringConstant stringConstant)
{
stringConstant.u2stringIndex = dataInput.readUnsignedShort();
}
public void visitUtf8Constant(Clazz clazz, Utf8Constant utf8Constant)
{
int u2length = dataInput.readUnsignedShort();
// Read the UTF-8 bytes.
byte[] bytes = new byte[u2length];
dataInput.readFully(bytes);
utf8Constant.setBytes(bytes);
}
public void visitDynamicConstant(Clazz clazz, DynamicConstant dynamicConstant)
{
dynamicConstant.u2bootstrapMethodAttributeIndex = dataInput.readUnsignedShort();
dynamicConstant.u2nameAndTypeIndex = dataInput.readUnsignedShort();
}
public void visitInvokeDynamicConstant(Clazz clazz, InvokeDynamicConstant invokeDynamicConstant)
{
invokeDynamicConstant.u2bootstrapMethodAttributeIndex = dataInput.readUnsignedShort();
invokeDynamicConstant.u2nameAndTypeIndex = dataInput.readUnsignedShort();
}
public void visitMethodHandleConstant(Clazz clazz, MethodHandleConstant methodHandleConstant)
{
methodHandleConstant.u1referenceKind = dataInput.readUnsignedByte();
methodHandleConstant.u2referenceIndex = dataInput.readUnsignedShort();
}
public void visitModuleConstant(Clazz clazz, ModuleConstant moduleConstant)
{
moduleConstant.u2nameIndex = dataInput.readUnsignedShort();
}
public void visitPackageConstant(Clazz clazz, PackageConstant packageConstant)
{
packageConstant.u2nameIndex = dataInput.readUnsignedShort();
}
public void visitAnyRefConstant(Clazz clazz, RefConstant refConstant)
{
refConstant.u2classIndex = dataInput.readUnsignedShort();
refConstant.u2nameAndTypeIndex = dataInput.readUnsignedShort();
}
public void visitClassConstant(Clazz clazz, ClassConstant classConstant)
{
classConstant.u2nameIndex = dataInput.readUnsignedShort();
}
public void visitMethodTypeConstant(Clazz clazz, MethodTypeConstant methodTypeConstant)
{
methodTypeConstant.u2descriptorIndex = dataInput.readUnsignedShort();
}
public void visitNameAndTypeConstant(Clazz clazz, NameAndTypeConstant nameAndTypeConstant)
{
nameAndTypeConstant.u2nameIndex = dataInput.readUnsignedShort();
nameAndTypeConstant.u2descriptorIndex = dataInput.readUnsignedShort();
}
// Implementations for AttributeVisitor.
public void visitUnknownAttribute(Clazz clazz, UnknownAttribute unknownAttribute)
{
// Read the unknown information.
byte[] info = new byte[unknownAttribute.u4attributeLength];
dataInput.readFully(info);
unknownAttribute.info = info;
}
public void visitBootstrapMethodsAttribute(Clazz clazz, BootstrapMethodsAttribute bootstrapMethodsAttribute)
{
// Read the bootstrap methods.
bootstrapMethodsAttribute.u2bootstrapMethodsCount = dataInput.readUnsignedShort();
bootstrapMethodsAttribute.bootstrapMethods = new BootstrapMethodInfo[bootstrapMethodsAttribute.u2bootstrapMethodsCount];
for (int index = 0; index < bootstrapMethodsAttribute.u2bootstrapMethodsCount; index++)
{
BootstrapMethodInfo bootstrapMethodInfo = new BootstrapMethodInfo();
visitBootstrapMethodInfo(clazz, bootstrapMethodInfo);
bootstrapMethodsAttribute.bootstrapMethods[index] = bootstrapMethodInfo;
}
}
public void visitSourceFileAttribute(Clazz clazz, SourceFileAttribute sourceFileAttribute)
{
sourceFileAttribute.u2sourceFileIndex = dataInput.readUnsignedShort();
}
public void visitSourceDirAttribute(Clazz clazz, SourceDirAttribute sourceDirAttribute)
{
sourceDirAttribute.u2sourceDirIndex = dataInput.readUnsignedShort();
}
public void visitSourceDebugExtensionAttribute(Clazz clazz, SourceDebugExtensionAttribute sourceDebugExtensionAttribute)
{
// Read the source debug extension information.
byte[] info = new byte[sourceDebugExtensionAttribute.u4attributeLength];
dataInput.readFully(info);
sourceDebugExtensionAttribute.info = info;
}
public void visitRecordAttribute(Clazz clazz, RecordAttribute recordAttribute)
{
// Read the components.
recordAttribute.u2componentsCount = dataInput.readUnsignedShort();
recordAttribute.components = new RecordComponentInfo[recordAttribute.u2componentsCount];
for (int index = 0; index < recordAttribute.u2componentsCount; index++)
{
RecordComponentInfo recordComponentInfo = new RecordComponentInfo();
visitRecordComponentInfo(clazz, recordComponentInfo);
recordAttribute.components[index] = recordComponentInfo;
}
}
public void visitInnerClassesAttribute(Clazz clazz, InnerClassesAttribute innerClassesAttribute)
{
// Read the inner classes.
innerClassesAttribute.u2classesCount = dataInput.readUnsignedShort();
innerClassesAttribute.classes = new InnerClassesInfo[innerClassesAttribute.u2classesCount];
for (int index = 0; index < innerClassesAttribute.u2classesCount; index++)
{
InnerClassesInfo innerClassesInfo = new InnerClassesInfo();
visitInnerClassesInfo(clazz, innerClassesInfo);
innerClassesAttribute.classes[index] = innerClassesInfo;
}
}
public void visitEnclosingMethodAttribute(Clazz clazz, EnclosingMethodAttribute enclosingMethodAttribute)
{
enclosingMethodAttribute.u2classIndex = dataInput.readUnsignedShort();
enclosingMethodAttribute.u2nameAndTypeIndex = dataInput.readUnsignedShort();
}
public void visitNestHostAttribute(Clazz clazz, NestHostAttribute nestHostAttribute)
{
nestHostAttribute.u2hostClassIndex = dataInput.readUnsignedShort();
}
public void visitNestMembersAttribute(Clazz clazz, NestMembersAttribute nestMembersAttribute)
{
// Read the nest host classes.
nestMembersAttribute.u2classesCount = dataInput.readUnsignedShort();
nestMembersAttribute.u2classes = readUnsignedShorts(nestMembersAttribute.u2classesCount);
}
public void visitPermittedSubclassesAttribute(Clazz clazz, PermittedSubclassesAttribute permittedSubclassesAttribute)
{
// Read the nest host classes.
permittedSubclassesAttribute.u2classesCount = dataInput.readUnsignedShort();
permittedSubclassesAttribute.u2classes = readUnsignedShorts(permittedSubclassesAttribute.u2classesCount);
}
public void visitModuleAttribute(Clazz clazz, ModuleAttribute moduleAttribute)
{
moduleAttribute.u2moduleNameIndex = dataInput.readUnsignedShort();
moduleAttribute.u2moduleFlags = dataInput.readUnsignedShort();
moduleAttribute.u2moduleVersionIndex = dataInput.readUnsignedShort();
// Read the requires.
moduleAttribute.u2requiresCount = dataInput.readUnsignedShort();
moduleAttribute.requires = new RequiresInfo[moduleAttribute.u2requiresCount];
for (int index = 0; index < moduleAttribute.u2requiresCount; index++)
{
RequiresInfo requiresInfo = new RequiresInfo();
visitRequiresInfo(clazz, requiresInfo);
moduleAttribute.requires[index] = requiresInfo;
}
// Read the exports.
moduleAttribute.u2exportsCount = dataInput.readUnsignedShort();
moduleAttribute.exports = new ExportsInfo[moduleAttribute.u2exportsCount];
for (int index = 0; index < moduleAttribute.u2exportsCount; index++)
{
ExportsInfo exportsInfo = new ExportsInfo();
visitExportsInfo(clazz, exportsInfo);
moduleAttribute.exports[index] = exportsInfo;
}
// Read the opens.
moduleAttribute.u2opensCount = dataInput.readUnsignedShort();
moduleAttribute.opens = new OpensInfo[moduleAttribute.u2opensCount];
for (int index = 0; index < moduleAttribute.u2opensCount; index++)
{
OpensInfo opensInfo = new OpensInfo();
visitOpensInfo(clazz, opensInfo);
moduleAttribute.opens[index] = opensInfo;
}
// Read the uses.
moduleAttribute.u2usesCount = dataInput.readUnsignedShort();
moduleAttribute.u2uses = readUnsignedShorts(moduleAttribute.u2usesCount);
// Read the provides.
moduleAttribute.u2providesCount = dataInput.readUnsignedShort();
moduleAttribute.provides = new ProvidesInfo[moduleAttribute.u2providesCount];
for (int index = 0; index < moduleAttribute.u2providesCount; index++)
{
ProvidesInfo providesInfo = new ProvidesInfo();
visitProvidesInfo(clazz, providesInfo);
moduleAttribute.provides[index] = providesInfo;
}
}
public void visitModuleMainClassAttribute(Clazz clazz, ModuleMainClassAttribute moduleMainClassAttribute)
{
moduleMainClassAttribute.u2mainClass = dataInput.readUnsignedShort();
}
public void visitModulePackagesAttribute(Clazz clazz, ModulePackagesAttribute modulePackagesAttribute)
{
// Read the packages.
modulePackagesAttribute.u2packagesCount = dataInput.readUnsignedShort();
modulePackagesAttribute.u2packages = readUnsignedShorts(modulePackagesAttribute.u2packagesCount);
}
public void visitDeprecatedAttribute(Clazz clazz, DeprecatedAttribute deprecatedAttribute)
{
// This attribute does not contain any additional information.
}
public void visitSyntheticAttribute(Clazz clazz, SyntheticAttribute syntheticAttribute)
{
// This attribute does not contain any additional information.
}
public void visitSignatureAttribute(Clazz clazz, SignatureAttribute signatureAttribute)
{
signatureAttribute.u2signatureIndex = dataInput.readUnsignedShort();
}
public void visitConstantValueAttribute(Clazz clazz, Field field, ConstantValueAttribute constantValueAttribute)
{
constantValueAttribute.u2constantValueIndex = dataInput.readUnsignedShort();
}
public void visitMethodParametersAttribute(Clazz clazz, Method method, MethodParametersAttribute methodParametersAttribute)
{
// Read the parameter information.
methodParametersAttribute.u1parametersCount = dataInput.readUnsignedByte();
methodParametersAttribute.parameters = new ParameterInfo[methodParametersAttribute.u1parametersCount];
for (int index = 0; index < methodParametersAttribute.u1parametersCount; index++)
{
ParameterInfo parameterInfo = new ParameterInfo();
visitParameterInfo(clazz, method, index, parameterInfo);
methodParametersAttribute.parameters[index] = parameterInfo;
}
}
public void visitExceptionsAttribute(Clazz clazz, Method method, ExceptionsAttribute exceptionsAttribute)
{
// Read the exceptions.
exceptionsAttribute.u2exceptionIndexTableLength = dataInput.readUnsignedShort();
exceptionsAttribute.u2exceptionIndexTable = readUnsignedShorts(exceptionsAttribute.u2exceptionIndexTableLength);
}
public void visitCodeAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute)
{
// Read the stack size and local variable frame size.
codeAttribute.u2maxStack = dataInput.readUnsignedShort();
codeAttribute.u2maxLocals = dataInput.readUnsignedShort();
// Read the byte code.
codeAttribute.u4codeLength = dataInput.readInt();
byte[] code = new byte[codeAttribute.u4codeLength];
dataInput.readFully(code);
codeAttribute.code = code;
// Read the exceptions.
codeAttribute.u2exceptionTableLength = dataInput.readUnsignedShort();
codeAttribute.exceptionTable = new ExceptionInfo[codeAttribute.u2exceptionTableLength];
for (int index = 0; index < codeAttribute.u2exceptionTableLength; index++)
{
ExceptionInfo exceptionInfo = new ExceptionInfo();
visitExceptionInfo(clazz, method, codeAttribute, exceptionInfo);
codeAttribute.exceptionTable[index] = exceptionInfo;
}
// Read the code attributes.
codeAttribute.u2attributesCount = dataInput.readUnsignedShort();
codeAttribute.attributes = new Attribute[codeAttribute.u2attributesCount];
for (int index = 0; index < codeAttribute.u2attributesCount; index++)
{
Attribute attribute = createAttribute(clazz);
attribute.accept(clazz, method, codeAttribute, this);
codeAttribute.attributes[index] = attribute;
}
}
public void visitStackMapAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, StackMapAttribute stackMapAttribute)
{
// Read the stack map frames (only full frames, without tag).
stackMapAttribute.u2stackMapFramesCount = dataInput.readUnsignedShort();
stackMapAttribute.stackMapFrames = new FullFrame[stackMapAttribute.u2stackMapFramesCount];
for (int index = 0; index < stackMapAttribute.u2stackMapFramesCount; index++)
{
FullFrame stackMapFrame = new FullFrame();
visitFullFrame(clazz, method, codeAttribute, index, stackMapFrame);
stackMapAttribute.stackMapFrames[index] = stackMapFrame;
}
}
public void visitStackMapTableAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, StackMapTableAttribute stackMapTableAttribute)
{
// Read the stack map frames.
stackMapTableAttribute.u2stackMapFramesCount = dataInput.readUnsignedShort();
stackMapTableAttribute.stackMapFrames = new StackMapFrame[stackMapTableAttribute.u2stackMapFramesCount];
for (int index = 0; index < stackMapTableAttribute.u2stackMapFramesCount; index++)
{
StackMapFrame stackMapFrame = createStackMapFrame();
stackMapFrame.accept(clazz, method, codeAttribute, 0, this);
stackMapTableAttribute.stackMapFrames[index] = stackMapFrame;
}
}
public void visitLineNumberTableAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, LineNumberTableAttribute lineNumberTableAttribute)
{
// Read the line numbers.
lineNumberTableAttribute.u2lineNumberTableLength = dataInput.readUnsignedShort();
lineNumberTableAttribute.lineNumberTable = new LineNumberInfo[lineNumberTableAttribute.u2lineNumberTableLength];
for (int index = 0; index < lineNumberTableAttribute.u2lineNumberTableLength; index++)
{
LineNumberInfo lineNumberInfo = new LineNumberInfo();
visitLineNumberInfo(clazz, method, codeAttribute, lineNumberInfo);
lineNumberTableAttribute.lineNumberTable[index] = lineNumberInfo;
}
}
public void visitLocalVariableTableAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, LocalVariableTableAttribute localVariableTableAttribute)
{
// Read the local variables.
localVariableTableAttribute.u2localVariableTableLength = dataInput.readUnsignedShort();
localVariableTableAttribute.localVariableTable = new LocalVariableInfo[localVariableTableAttribute.u2localVariableTableLength];
for (int index = 0; index < localVariableTableAttribute.u2localVariableTableLength; index++)
{
LocalVariableInfo localVariableInfo = new LocalVariableInfo();
visitLocalVariableInfo(clazz, method, codeAttribute, localVariableInfo);
localVariableTableAttribute.localVariableTable[index] = localVariableInfo;
}
}
public void visitLocalVariableTypeTableAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, LocalVariableTypeTableAttribute localVariableTypeTableAttribute)
{
// Read the local variable types.
localVariableTypeTableAttribute.u2localVariableTypeTableLength = dataInput.readUnsignedShort();
localVariableTypeTableAttribute.localVariableTypeTable = new LocalVariableTypeInfo[localVariableTypeTableAttribute.u2localVariableTypeTableLength];
for (int index = 0; index < localVariableTypeTableAttribute.u2localVariableTypeTableLength; index++)
{
LocalVariableTypeInfo localVariableTypeInfo = new LocalVariableTypeInfo();
visitLocalVariableTypeInfo(clazz, method, codeAttribute, localVariableTypeInfo);
localVariableTypeTableAttribute.localVariableTypeTable[index] = localVariableTypeInfo;
}
}
public void visitAnyAnnotationsAttribute(Clazz clazz, AnnotationsAttribute annotationsAttribute)
{
// Read the annotations.
annotationsAttribute.u2annotationsCount = dataInput.readUnsignedShort();
annotationsAttribute.annotations = new Annotation[annotationsAttribute.u2annotationsCount];
for (int index = 0; index < annotationsAttribute.u2annotationsCount; index++)
{
Annotation annotation = new Annotation();
visitAnnotation(clazz, annotation);
annotationsAttribute.annotations[index] = annotation;
}
}
public void visitAnyParameterAnnotationsAttribute(Clazz clazz, Method method, ParameterAnnotationsAttribute parameterAnnotationsAttribute)
{
// Read the parameter annotations.
parameterAnnotationsAttribute.u1parametersCount = dataInput.readUnsignedByte();
parameterAnnotationsAttribute.u2parameterAnnotationsCount = new int[parameterAnnotationsAttribute.u1parametersCount];
parameterAnnotationsAttribute.parameterAnnotations = new Annotation[parameterAnnotationsAttribute.u1parametersCount][];
for (int parameterIndex = 0; parameterIndex < parameterAnnotationsAttribute.u1parametersCount; parameterIndex++)
{
// Read the parameter annotations of the given parameter.
int u2annotationsCount = dataInput.readUnsignedShort();
Annotation[] annotations = new Annotation[u2annotationsCount];
for (int index = 0; index < u2annotationsCount; index++)
{
Annotation annotation = new Annotation();
visitAnnotation(clazz, annotation);
annotations[index] = annotation;
}
parameterAnnotationsAttribute.u2parameterAnnotationsCount[parameterIndex] = u2annotationsCount;
parameterAnnotationsAttribute.parameterAnnotations[parameterIndex] = annotations;
}
}
public void visitAnyTypeAnnotationsAttribute(Clazz clazz, TypeAnnotationsAttribute typeAnnotationsAttribute)
{
// Read the type annotations.
typeAnnotationsAttribute.u2annotationsCount = dataInput.readUnsignedShort();
typeAnnotationsAttribute.annotations = new TypeAnnotation[typeAnnotationsAttribute.u2annotationsCount];
for (int index = 0; index < typeAnnotationsAttribute.u2annotationsCount; index++)
{
TypeAnnotation typeAnnotation = new TypeAnnotation();
visitTypeAnnotation(clazz, typeAnnotation);
typeAnnotationsAttribute.annotations[index] = typeAnnotation;
}
}
public void visitAnnotationDefaultAttribute(Clazz clazz, Method method, AnnotationDefaultAttribute annotationDefaultAttribute)
{
// Read the default element value.
ElementValue elementValue = createElementValue();
elementValue.accept(clazz, null, this);
annotationDefaultAttribute.defaultValue = elementValue;
}
// Implementations for BootstrapMethodInfoVisitor.
public void visitBootstrapMethodInfo(Clazz clazz, BootstrapMethodInfo bootstrapMethodInfo)
{
bootstrapMethodInfo.u2methodHandleIndex = dataInput.readUnsignedShort();
// Read the bootstrap method arguments.
bootstrapMethodInfo.u2methodArgumentCount = dataInput.readUnsignedShort();
bootstrapMethodInfo.u2methodArguments = readUnsignedShorts(bootstrapMethodInfo.u2methodArgumentCount);
}
// Implementations for RecordComponentInfoVisitor.
public void visitRecordComponentInfo(Clazz clazz, RecordComponentInfo recordComponentInfo)
{
recordComponentInfo.u2nameIndex = dataInput.readUnsignedShort();
recordComponentInfo.u2descriptorIndex = dataInput.readUnsignedShort();
// Read the component attributes.
recordComponentInfo.u2attributesCount = dataInput.readUnsignedShort();
recordComponentInfo.attributes = new Attribute[recordComponentInfo.u2attributesCount];
for (int index = 0; index < recordComponentInfo.u2attributesCount; index++)
{
Attribute attribute = createAttribute(clazz);
attribute.accept(clazz, this);
recordComponentInfo.attributes[index] = attribute;
}
}
// Implementations for InnerClassesInfoVisitor.
public void visitInnerClassesInfo(Clazz clazz, InnerClassesInfo innerClassesInfo)
{
innerClassesInfo.u2innerClassIndex = dataInput.readUnsignedShort();
innerClassesInfo.u2outerClassIndex = dataInput.readUnsignedShort();
innerClassesInfo.u2innerNameIndex = dataInput.readUnsignedShort();
innerClassesInfo.u2innerClassAccessFlags = dataInput.readUnsignedShort();
}
// Implementations for ExceptionInfoVisitor.
public void visitExceptionInfo(Clazz clazz, Method method, CodeAttribute codeAttribute, ExceptionInfo exceptionInfo)
{
exceptionInfo.u2startPC = dataInput.readUnsignedShort();
exceptionInfo.u2endPC = dataInput.readUnsignedShort();
exceptionInfo.u2handlerPC = dataInput.readUnsignedShort();
exceptionInfo.u2catchType = dataInput.readUnsignedShort();
}
// Implementations for StackMapFrameVisitor.
public void visitSameZeroFrame(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, SameZeroFrame sameZeroFrame)
{
if (sameZeroFrame.getTag() == StackMapFrame.SAME_ZERO_FRAME_EXTENDED)
{
sameZeroFrame.u2offsetDelta = dataInput.readUnsignedShort();
}
}
public void visitSameOneFrame(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, SameOneFrame sameOneFrame)
{
if (sameOneFrame.getTag() == StackMapFrame.SAME_ONE_FRAME_EXTENDED)
{
sameOneFrame.u2offsetDelta = dataInput.readUnsignedShort();
}
// Read the verification type of the stack entry.
VerificationType verificationType = createVerificationType();
verificationType.accept(clazz, method, codeAttribute, offset, this);
sameOneFrame.stackItem = verificationType;
}
public void visitLessZeroFrame(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, LessZeroFrame lessZeroFrame)
{
lessZeroFrame.u2offsetDelta = dataInput.readUnsignedShort();
}
public void visitMoreZeroFrame(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, MoreZeroFrame moreZeroFrame)
{
moreZeroFrame.u2offsetDelta = dataInput.readUnsignedShort();
// Read the verification types of the additional local variables.
moreZeroFrame.additionalVariables = new VerificationType[moreZeroFrame.additionalVariablesCount];
for (int index = 0; index < moreZeroFrame.additionalVariablesCount; index++)
{
VerificationType verificationType = createVerificationType();
verificationType.accept(clazz, method, codeAttribute, offset, this);
moreZeroFrame.additionalVariables[index] = verificationType;
}
}
public void visitFullFrame(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, FullFrame fullFrame)
{
fullFrame.u2offsetDelta = dataInput.readUnsignedShort();
// Read the verification types of the local variables.
fullFrame.variablesCount = dataInput.readUnsignedShort();
fullFrame.variables = new VerificationType[fullFrame.variablesCount];
for (int index = 0; index < fullFrame.variablesCount; index++)
{
VerificationType verificationType = createVerificationType();
verificationType.variablesAccept(clazz, method, codeAttribute, offset, index, this);
fullFrame.variables[index] = verificationType;
}
// Read the verification types of the stack entries.
fullFrame.stackCount = dataInput.readUnsignedShort();
fullFrame.stack = new VerificationType[fullFrame.stackCount];
for (int index = 0; index < fullFrame.stackCount; index++)
{
VerificationType verificationType = createVerificationType();
verificationType.stackAccept(clazz, method, codeAttribute, offset, index, this);
fullFrame.stack[index] = verificationType;
}
}
// Implementations for VerificationTypeVisitor.
public void visitAnyVerificationType(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, VerificationType verificationType)
{
// Most verification types don't contain any additional information.
}
public void visitObjectType(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, ObjectType objectType)
{
objectType.u2classIndex = dataInput.readUnsignedShort();
}
public void visitUninitializedType(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, UninitializedType uninitializedType)
{
uninitializedType.u2newInstructionOffset = dataInput.readUnsignedShort();
}
// Implementations for LineNumberInfoVisitor.
public void visitLineNumberInfo(Clazz clazz, Method method, CodeAttribute codeAttribute, LineNumberInfo lineNumberInfo)
{
lineNumberInfo.u2startPC = dataInput.readUnsignedShort();
lineNumberInfo.u2lineNumber = dataInput.readUnsignedShort();
}
// Implementations for ParameterInfoVisitor.
public void visitParameterInfo(Clazz clazz, Method method, int parameterIndex, ParameterInfo parameterInfo)
{
parameterInfo.u2nameIndex = dataInput.readUnsignedShort();
parameterInfo.u2accessFlags = dataInput.readUnsignedShort();
}
// Implementations for LocalVariableInfoVisitor.
public void visitLocalVariableInfo(Clazz clazz, Method method, CodeAttribute codeAttribute, LocalVariableInfo localVariableInfo)
{
localVariableInfo.u2startPC = dataInput.readUnsignedShort();
localVariableInfo.u2length = dataInput.readUnsignedShort();
localVariableInfo.u2nameIndex = dataInput.readUnsignedShort();
localVariableInfo.u2descriptorIndex = dataInput.readUnsignedShort();
localVariableInfo.u2index = dataInput.readUnsignedShort();
}
// Implementations for LocalVariableTypeInfoVisitor.
public void visitLocalVariableTypeInfo(Clazz clazz, Method method, CodeAttribute codeAttribute, LocalVariableTypeInfo localVariableTypeInfo)
{
localVariableTypeInfo.u2startPC = dataInput.readUnsignedShort();
localVariableTypeInfo.u2length = dataInput.readUnsignedShort();
localVariableTypeInfo.u2nameIndex = dataInput.readUnsignedShort();
localVariableTypeInfo.u2signatureIndex = dataInput.readUnsignedShort();
localVariableTypeInfo.u2index = dataInput.readUnsignedShort();
}
// Implementations for RequiresInfoVisitor.
public void visitRequiresInfo(Clazz clazz, RequiresInfo requiresInfo)
{
requiresInfo.u2requiresIndex = dataInput.readUnsignedShort();
requiresInfo.u2requiresFlags = dataInput.readUnsignedShort();
requiresInfo.u2requiresVersionIndex = dataInput.readUnsignedShort();
}
// Implementations for ExportsInfoVisitor.
public void visitExportsInfo(Clazz clazz, ExportsInfo exportsInfo)
{
exportsInfo.u2exportsIndex = dataInput.readUnsignedShort();
exportsInfo.u2exportsFlags = dataInput.readUnsignedShort();
// Read the targets.
exportsInfo.u2exportsToCount = dataInput.readUnsignedShort();
exportsInfo.u2exportsToIndex = readUnsignedShorts(exportsInfo.u2exportsToCount);
}
// Implementations for OpensInfoVisitor.
public void visitOpensInfo(Clazz clazz, OpensInfo opensInfo)
{
opensInfo.u2opensIndex = dataInput.readUnsignedShort();
opensInfo.u2opensFlags = dataInput.readUnsignedShort();
// Read the targets.
opensInfo.u2opensToCount = dataInput.readUnsignedShort();
opensInfo.u2opensToIndex = readUnsignedShorts(opensInfo.u2opensToCount);
}
// Implementations for ProvidesInfoVisitor.
public void visitProvidesInfo(Clazz clazz, ProvidesInfo providesInfo)
{
providesInfo.u2providesIndex = dataInput.readUnsignedShort();
// Read the provides withs.
providesInfo.u2providesWithCount = dataInput.readUnsignedShort();
providesInfo.u2providesWithIndex = readUnsignedShorts(providesInfo.u2providesWithCount);
}
// Implementations for AnnotationVisitor.
public void visitAnnotation(Clazz clazz, Annotation annotation)
{
// Read the annotation type.
annotation.u2typeIndex = dataInput.readUnsignedShort();
// Read the element value pairs.
annotation.u2elementValuesCount = dataInput.readUnsignedShort();
annotation.elementValues = new ElementValue[annotation.u2elementValuesCount];
for (int index = 0; index < annotation.u2elementValuesCount; index++)
{
int u2elementNameIndex = dataInput.readUnsignedShort();
ElementValue elementValue = createElementValue();
elementValue.u2elementNameIndex = u2elementNameIndex;
elementValue.accept(clazz, annotation, this);
annotation.elementValues[index] = elementValue;
}
}
// Implementations for TypeAnnotationVisitor.
public void visitTypeAnnotation(Clazz clazz, TypeAnnotation typeAnnotation)
{
// Read the target info.
TargetInfo targetInfo = createTargetInfo();
targetInfo.accept(clazz, typeAnnotation, this);
typeAnnotation.targetInfo = targetInfo;
// Read the type path.
int u1pathLength = dataInput.readUnsignedByte();
typeAnnotation.typePath = new TypePathInfo[u1pathLength];
for (int index = 0; index < u1pathLength; index++)
{
TypePathInfo typePathInfo = new TypePathInfo();
visitTypePathInfo(clazz, typeAnnotation, typePathInfo);
typeAnnotation.typePath[index] = typePathInfo;
}
// Read the actual annotation.
visitAnnotation(clazz, typeAnnotation);
}
// Implementations for TargetInfoVisitor.
public void visitTypeParameterTargetInfo(Clazz clazz, TypeAnnotation typeAnnotation, TypeParameterTargetInfo typeParameterTargetInfo)
{
typeParameterTargetInfo.u1typeParameterIndex = dataInput.readUnsignedByte();
}
public void visitSuperTypeTargetInfo(Clazz clazz, TypeAnnotation typeAnnotation, SuperTypeTargetInfo superTypeTargetInfo)
{
superTypeTargetInfo.u2superTypeIndex = dataInput.readUnsignedShort();
}
public void visitTypeParameterBoundTargetInfo(Clazz clazz, TypeAnnotation typeAnnotation, TypeParameterBoundTargetInfo typeParameterBoundTargetInfo)
{
typeParameterBoundTargetInfo.u1typeParameterIndex = dataInput.readUnsignedByte();
typeParameterBoundTargetInfo.u1boundIndex = dataInput.readUnsignedByte();
}
public void visitEmptyTargetInfo(Clazz clazz, Member member, TypeAnnotation typeAnnotation, EmptyTargetInfo emptyTargetInfo)
{
}
public void visitFormalParameterTargetInfo(Clazz clazz, Method method, TypeAnnotation typeAnnotation, FormalParameterTargetInfo formalParameterTargetInfo)
{
formalParameterTargetInfo.u1formalParameterIndex = dataInput.readUnsignedByte();
}
public void visitThrowsTargetInfo(Clazz clazz, Method method, TypeAnnotation typeAnnotation, ThrowsTargetInfo throwsTargetInfo)
{
throwsTargetInfo.u2throwsTypeIndex = dataInput.readUnsignedShort();
}
public void visitLocalVariableTargetInfo(Clazz clazz, Method method, CodeAttribute codeAttribute, TypeAnnotation typeAnnotation, LocalVariableTargetInfo localVariableTargetInfo)
{
// Read the local variable target elements.
localVariableTargetInfo.u2tableLength = dataInput.readUnsignedShort();
localVariableTargetInfo.table = new LocalVariableTargetElement[localVariableTargetInfo.u2tableLength];
for (int index = 0; index < localVariableTargetInfo.u2tableLength; index++)
{
LocalVariableTargetElement element = new LocalVariableTargetElement();
visitLocalVariableTargetElement(clazz, method, codeAttribute, typeAnnotation, localVariableTargetInfo, element);
localVariableTargetInfo.table[index] = element;
}
}
public void visitCatchTargetInfo(Clazz clazz, Method method, CodeAttribute codeAttribute, TypeAnnotation typeAnnotation, CatchTargetInfo catchTargetInfo)
{
catchTargetInfo.u2exceptionTableIndex = dataInput.readUnsignedShort();
}
public void visitOffsetTargetInfo(Clazz clazz, Method method, CodeAttribute codeAttribute, TypeAnnotation typeAnnotation, OffsetTargetInfo offsetTargetInfo)
{
offsetTargetInfo.u2offset = dataInput.readUnsignedShort();
}
public void visitTypeArgumentTargetInfo(Clazz clazz, Method method, CodeAttribute codeAttribute, TypeAnnotation typeAnnotation, TypeArgumentTargetInfo typeArgumentTargetInfo)
{
typeArgumentTargetInfo.u2offset = dataInput.readUnsignedShort();
typeArgumentTargetInfo.u1typeArgumentIndex = dataInput.readUnsignedByte();
}
// Implementations for TypePathInfoVisitor.
public void visitTypePathInfo(Clazz clazz, TypeAnnotation typeAnnotation, TypePathInfo typePathInfo)
{
typePathInfo.u1typePathKind = dataInput.readUnsignedByte();
typePathInfo.u1typeArgumentIndex = dataInput.readUnsignedByte();
}
// Implementations for LocalVariableTargetElementVisitor.
public void visitLocalVariableTargetElement(Clazz clazz, Method method, CodeAttribute codeAttribute, TypeAnnotation typeAnnotation, LocalVariableTargetInfo localVariableTargetInfo, LocalVariableTargetElement localVariableTargetElement)
{
localVariableTargetElement.u2startPC = dataInput.readShort();
localVariableTargetElement.u2length = dataInput.readShort();
localVariableTargetElement.u2index = dataInput.readShort();
}
// Implementations for ElementValueVisitor.
public void visitConstantElementValue(Clazz clazz, Annotation annotation, ConstantElementValue constantElementValue)
{
constantElementValue.u2constantValueIndex = dataInput.readUnsignedShort();
}
public void visitEnumConstantElementValue(Clazz clazz, Annotation annotation, EnumConstantElementValue enumConstantElementValue)
{
enumConstantElementValue.u2typeNameIndex = dataInput.readUnsignedShort();
enumConstantElementValue.u2constantNameIndex = dataInput.readUnsignedShort();
}
public void visitClassElementValue(Clazz clazz, Annotation annotation, ClassElementValue classElementValue)
{
classElementValue.u2classInfoIndex = dataInput.readUnsignedShort();
}
public void visitAnnotationElementValue(Clazz clazz, Annotation annotation, AnnotationElementValue annotationElementValue)
{
// Read the annotation.
Annotation annotationValue = new Annotation();
visitAnnotation(clazz, annotationValue);
annotationElementValue.annotationValue = annotationValue;
}
public void visitArrayElementValue(Clazz clazz, Annotation annotation, ArrayElementValue arrayElementValue)
{
// Read the element values.
arrayElementValue.u2elementValuesCount = dataInput.readUnsignedShort();
arrayElementValue.elementValues = new ElementValue[arrayElementValue.u2elementValuesCount];
for (int index = 0; index < arrayElementValue.u2elementValuesCount; index++)
{
ElementValue elementValue = createElementValue();
elementValue.accept(clazz, annotation, this);
arrayElementValue.elementValues[index] = elementValue;
}
}
// Small utility methods.
private Constant createConstant()
{
int u1tag = dataInput.readUnsignedByte();
switch (u1tag)
{
case Constant.INTEGER: return new IntegerConstant();
case Constant.FLOAT: return new FloatConstant();
case Constant.LONG: return new LongConstant();
case Constant.DOUBLE: return new DoubleConstant();
case Constant.PRIMITIVE_ARRAY: return new PrimitiveArrayConstant();
case Constant.STRING: return new StringConstant();
case Constant.UTF8: return new Utf8Constant();
case Constant.DYNAMIC: return new DynamicConstant();
case Constant.INVOKE_DYNAMIC: return new InvokeDynamicConstant();
case Constant.METHOD_HANDLE: return new MethodHandleConstant();
case Constant.FIELDREF: return new FieldrefConstant();
case Constant.METHODREF: return new MethodrefConstant();
case Constant.INTERFACE_METHODREF: return new InterfaceMethodrefConstant();
case Constant.CLASS: return new ClassConstant();
case Constant.METHOD_TYPE: return new MethodTypeConstant();
case Constant.NAME_AND_TYPE: return new NameAndTypeConstant();
case Constant.MODULE: return new ModuleConstant();
case Constant.PACKAGE: return new PackageConstant();
default: throw new RuntimeException("Unknown constant type ["+u1tag+"] in constant pool");
}
}
private Attribute createAttribute(Clazz clazz)
{
int u2attributeNameIndex = dataInput.readUnsignedShort();
int u4attributeLength = dataInput.readInt();
String attributeName = clazz.getString(u2attributeNameIndex);
Attribute attribute =
attributeName.equals(Attribute.BOOTSTRAP_METHODS) ? new BootstrapMethodsAttribute() :
attributeName.equals(Attribute.SOURCE_FILE) ? new SourceFileAttribute() :
attributeName.equals(Attribute.SOURCE_DIR) ? new SourceDirAttribute() :
attributeName.equals(Attribute.SOURCE_DEBUG_EXTENSION) ? new SourceDebugExtensionAttribute(0, u4attributeLength, null) :
attributeName.equals(Attribute.RECORD) ? new RecordAttribute() :
attributeName.equals(Attribute.INNER_CLASSES) ? new InnerClassesAttribute() :
attributeName.equals(Attribute.ENCLOSING_METHOD) ? new EnclosingMethodAttribute() :
attributeName.equals(Attribute.NEST_HOST) ? new NestHostAttribute() :
attributeName.equals(Attribute.NEST_MEMBERS) ? new NestMembersAttribute() :
attributeName.equals(Attribute.PERMITTED_SUBCLASSES) ? new PermittedSubclassesAttribute() :
attributeName.equals(Attribute.DEPRECATED) ? new DeprecatedAttribute() :
attributeName.equals(Attribute.SYNTHETIC) ? new SyntheticAttribute() :
attributeName.equals(Attribute.SIGNATURE) ? new SignatureAttribute() :
attributeName.equals(Attribute.CONSTANT_VALUE) ? new ConstantValueAttribute() :
attributeName.equals(Attribute.METHOD_PARAMETERS) ? new MethodParametersAttribute() :
attributeName.equals(Attribute.EXCEPTIONS) ? new ExceptionsAttribute() :
attributeName.equals(Attribute.CODE) ? new CodeAttribute() :
attributeName.equals(Attribute.STACK_MAP) && !ignoreStackMapAttributes ? new StackMapAttribute() :
attributeName.equals(Attribute.STACK_MAP_TABLE) && !ignoreStackMapAttributes ? new StackMapTableAttribute() :
attributeName.equals(Attribute.LINE_NUMBER_TABLE) ? new LineNumberTableAttribute() :
attributeName.equals(Attribute.LOCAL_VARIABLE_TABLE) ? new LocalVariableTableAttribute() :
attributeName.equals(Attribute.LOCAL_VARIABLE_TYPE_TABLE) ? new LocalVariableTypeTableAttribute() :
attributeName.equals(Attribute.RUNTIME_VISIBLE_ANNOTATIONS) ? new RuntimeVisibleAnnotationsAttribute() :
attributeName.equals(Attribute.RUNTIME_INVISIBLE_ANNOTATIONS) ? new RuntimeInvisibleAnnotationsAttribute() :
attributeName.equals(Attribute.RUNTIME_VISIBLE_PARAMETER_ANNOTATIONS) ? new RuntimeVisibleParameterAnnotationsAttribute() :
attributeName.equals(Attribute.RUNTIME_INVISIBLE_PARAMETER_ANNOTATIONS) ? new RuntimeInvisibleParameterAnnotationsAttribute() :
attributeName.equals(Attribute.RUNTIME_VISIBLE_TYPE_ANNOTATIONS) ? new RuntimeVisibleTypeAnnotationsAttribute() :
attributeName.equals(Attribute.RUNTIME_INVISIBLE_TYPE_ANNOTATIONS) ? new RuntimeInvisibleTypeAnnotationsAttribute() :
attributeName.equals(Attribute.ANNOTATION_DEFAULT) ? new AnnotationDefaultAttribute() :
attributeName.equals(Attribute.MODULE) ? new ModuleAttribute() :
attributeName.equals(Attribute.MODULE_MAIN_CLASS) ? new ModuleMainClassAttribute() :
attributeName.equals(Attribute.MODULE_PACKAGES) ? new ModulePackagesAttribute() :
new UnknownAttribute(u2attributeNameIndex, u4attributeLength);
attribute.u2attributeNameIndex = u2attributeNameIndex;
return attribute;
}
private StackMapFrame createStackMapFrame()
{
int u1tag = dataInput.readUnsignedByte();
return
u1tag < StackMapFrame.SAME_ONE_FRAME ? new SameZeroFrame(u1tag) :
u1tag < StackMapFrame.SAME_ONE_FRAME_EXTENDED ? new SameOneFrame(u1tag) :
u1tag < StackMapFrame.LESS_ZERO_FRAME ? new SameOneFrame(u1tag) :
u1tag < StackMapFrame.SAME_ZERO_FRAME_EXTENDED ? new LessZeroFrame(u1tag) :
u1tag < StackMapFrame.MORE_ZERO_FRAME ? new SameZeroFrame(u1tag) :
u1tag < StackMapFrame.FULL_FRAME ? new MoreZeroFrame(u1tag) :
new FullFrame();
}
private VerificationType createVerificationType()
{
int u1tag = dataInput.readUnsignedByte();
switch (u1tag)
{
case VerificationType.INTEGER_TYPE: return new IntegerType();
case VerificationType.FLOAT_TYPE: return new FloatType();
case VerificationType.LONG_TYPE: return new LongType();
case VerificationType.DOUBLE_TYPE: return new DoubleType();
case VerificationType.TOP_TYPE: return new TopType();
case VerificationType.OBJECT_TYPE: return new ObjectType();
case VerificationType.NULL_TYPE: return new NullType();
case VerificationType.UNINITIALIZED_TYPE: return new UninitializedType();
case VerificationType.UNINITIALIZED_THIS_TYPE: return new UninitializedThisType();
default: throw new RuntimeException("Unknown verification type ["+u1tag+"] in stack map frame");
}
}
private TargetInfo createTargetInfo()
{
byte u1targetType = dataInput.readByte();
switch (u1targetType)
{
case TargetInfo.TARGET_TYPE_PARAMETER_GENERIC_CLASS:
case TargetInfo.TARGET_TYPE_PARAMETER_GENERIC_METHOD: return new TypeParameterTargetInfo(u1targetType);
case TargetInfo.TARGET_TYPE_EXTENDS: return new SuperTypeTargetInfo(u1targetType);
case TargetInfo.TARGET_TYPE_BOUND_GENERIC_CLASS:
case TargetInfo.TARGET_TYPE_BOUND_GENERIC_METHOD: return new TypeParameterBoundTargetInfo(u1targetType);
case TargetInfo.TARGET_TYPE_FIELD:
case TargetInfo.TARGET_TYPE_RETURN:
case TargetInfo.TARGET_TYPE_RECEIVER: return new EmptyTargetInfo(u1targetType);
case TargetInfo.TARGET_TYPE_PARAMETER: return new FormalParameterTargetInfo(u1targetType);
case TargetInfo.TARGET_TYPE_THROWS: return new ThrowsTargetInfo(u1targetType);
case TargetInfo.TARGET_TYPE_LOCAL_VARIABLE:
case TargetInfo.TARGET_TYPE_RESOURCE_VARIABLE: return new LocalVariableTargetInfo(u1targetType);
case TargetInfo.TARGET_TYPE_CATCH: return new CatchTargetInfo(u1targetType);
case TargetInfo.TARGET_TYPE_INSTANCE_OF:
case TargetInfo.TARGET_TYPE_NEW:
case TargetInfo.TARGET_TYPE_METHOD_REFERENCE_NEW:
case TargetInfo.TARGET_TYPE_METHOD_REFERENCE: return new OffsetTargetInfo(u1targetType);
case TargetInfo.TARGET_TYPE_CAST:
case TargetInfo.TARGET_TYPE_ARGUMENT_GENERIC_METHODNew:
case TargetInfo.TARGET_TYPE_ARGUMENT_GENERIC_METHOD:
case TargetInfo.TARGET_TYPE_ARGUMENT_GENERIC_METHODReferenceNew:
case TargetInfo.TARGET_TYPE_ARGUMENT_GENERIC_METHODReference: return new TypeArgumentTargetInfo(u1targetType);
default: throw new RuntimeException("Unknown annotation target type ["+u1targetType+"]");
}
}
private ElementValue createElementValue()
{
int u1tag = dataInput.readUnsignedByte();
switch (u1tag)
{
case TypeConstants.BOOLEAN:
case TypeConstants.BYTE:
case TypeConstants.CHAR:
case TypeConstants.SHORT:
case TypeConstants.INT:
case TypeConstants.FLOAT:
case TypeConstants.LONG:
case TypeConstants.DOUBLE:
case ElementValue.TAG_STRING_CONSTANT: return new ConstantElementValue((char)u1tag);
case ElementValue.TAG_ENUM_CONSTANT: return new EnumConstantElementValue();
case ElementValue.TAG_CLASS: return new ClassElementValue();
case ElementValue.TAG_ANNOTATION: return new AnnotationElementValue();
case ElementValue.TAG_ARRAY: return new ArrayElementValue();
default: throw new IllegalArgumentException("Unknown element value tag ["+u1tag+"]");
}
}
/**
* Reads a list of unsigned shorts of the given size.
*/
private int[] readUnsignedShorts(int size)
{
int[] values = new int[size];
for (int index = 0; index < size; index++)
{
values[index] = dataInput.readUnsignedShort();
}
return values;
}
}
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