| /* |
| * ProGuard -- shrinking, optimization, obfuscation, and preverification |
| * of Java bytecode. |
| * |
| * Copyright (c) 2002-2009 Eric Lafortune (eric@graphics.cornell.edu) |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License as published by the Free |
| * Software Foundation; either version 2 of the License, or (at your option) |
| * any later version. |
| * |
| * This program is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| * more details. |
| * |
| * You should have received a copy of the GNU General Public License along |
| * with this program; if not, write to the Free Software Foundation, Inc., |
| * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| package proguard.classfile.io; |
| |
| import proguard.classfile.*; |
| import proguard.classfile.attribute.*; |
| import proguard.classfile.attribute.annotation.*; |
| import proguard.classfile.attribute.annotation.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 java.io.DataInput; |
| |
| /** |
| * This ClassVisitor fills out the ProgramClass objects that it visits with data |
| * from the given DataInput object. |
| * |
| * @author Eric Lafortune |
| */ |
| public class ProgramClassReader |
| extends SimplifiedVisitor |
| implements ClassVisitor, |
| MemberVisitor, |
| ConstantVisitor, |
| AttributeVisitor, |
| InnerClassesInfoVisitor, |
| ExceptionInfoVisitor, |
| StackMapFrameVisitor, |
| VerificationTypeVisitor, |
| LineNumberInfoVisitor, |
| LocalVariableInfoVisitor, |
| LocalVariableTypeInfoVisitor, |
| AnnotationVisitor, |
| ElementValueVisitor |
| { |
| private final RuntimeDataInput dataInput; |
| |
| |
| /** |
| * Creates a new ProgramClassReader for reading from the given DataInput. |
| */ |
| public ProgramClassReader(DataInput dataInput) |
| { |
| this.dataInput = new RuntimeDataInput(dataInput); |
| } |
| |
| |
| // Implementations for ClassVisitor. |
| |
| public void visitProgramClass(ProgramClass programClass) |
| { |
| // Read and check the magic number. |
| programClass.u4magic = dataInput.readInt(); |
| |
| ClassUtil.checkMagicNumber(programClass.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 == ClassConstants.CONSTANT_Long || |
| tag == ClassConstants.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 = new int[programClass.u2interfacesCount]; |
| for (int index = 0; index < programClass.u2interfacesCount; index++) |
| { |
| programClass.u2interfaces[index] = dataInput.readUnsignedShort(); |
| } |
| |
| // 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; |
| } |
| } |
| |
| |
| public void visitLibraryClass(LibraryClass libraryClass) |
| { |
| } |
| |
| |
| // 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 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 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 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 visitSourceFileAttribute(Clazz clazz, SourceFileAttribute sourceFileAttribute) |
| { |
| sourceFileAttribute.u2sourceFileIndex = dataInput.readUnsignedShort(); |
| } |
| |
| |
| public void visitSourceDirAttribute(Clazz clazz, SourceDirAttribute sourceDirAttribute) |
| { |
| sourceDirAttribute.u2sourceDirIndex = dataInput.readUnsignedShort(); |
| } |
| |
| |
| 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(); |
| this.visitInnerClassesInfo(clazz, innerClassesInfo); |
| innerClassesAttribute.classes[index] = innerClassesInfo; |
| } |
| } |
| |
| |
| public void visitEnclosingMethodAttribute(Clazz clazz, EnclosingMethodAttribute enclosingMethodAttribute) |
| { |
| enclosingMethodAttribute.u2classIndex = dataInput.readUnsignedShort(); |
| enclosingMethodAttribute.u2nameAndTypeIndex = dataInput.readUnsignedShort(); |
| } |
| |
| |
| 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 visitExceptionsAttribute(Clazz clazz, Method method, ExceptionsAttribute exceptionsAttribute) |
| { |
| // Read the exceptions. |
| exceptionsAttribute.u2exceptionIndexTableLength = dataInput.readUnsignedShort(); |
| |
| exceptionsAttribute.u2exceptionIndexTable = new int[exceptionsAttribute.u2exceptionIndexTableLength]; |
| for (int index = 0; index < exceptionsAttribute.u2exceptionIndexTableLength; index++) |
| { |
| exceptionsAttribute.u2exceptionIndexTable[index] = dataInput.readUnsignedShort(); |
| } |
| } |
| |
| |
| 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(); |
| this.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(); |
| this.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(); |
| this.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(); |
| this.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(); |
| this.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(); |
| this.visitAnnotation(clazz, annotation); |
| annotationsAttribute.annotations[index] = annotation; |
| } |
| } |
| |
| |
| public void visitAnyParameterAnnotationsAttribute(Clazz clazz, Method method, ParameterAnnotationsAttribute parameterAnnotationsAttribute) |
| { |
| // Read the parameter annotations. |
| parameterAnnotationsAttribute.u2parametersCount = dataInput.readUnsignedByte(); |
| |
| // The java compilers of JDK 1.5, JDK 1.6, and Eclipse all count the |
| // number of parameters of constructors of non-static inner classes |
| // incorrectly. Fix it right here. |
| int parameterStart = 0; |
| if (method.getName(clazz).equals(ClassConstants.INTERNAL_METHOD_NAME_INIT)) |
| { |
| int realParametersCount = ClassUtil.internalMethodParameterCount(method.getDescriptor(clazz)); |
| parameterStart = realParametersCount - parameterAnnotationsAttribute.u2parametersCount; |
| parameterAnnotationsAttribute.u2parametersCount = realParametersCount; |
| } |
| |
| parameterAnnotationsAttribute.u2parameterAnnotationsCount = new int[parameterAnnotationsAttribute.u2parametersCount]; |
| parameterAnnotationsAttribute.parameterAnnotations = new Annotation[parameterAnnotationsAttribute.u2parametersCount][]; |
| |
| for (int parameterIndex = parameterStart; parameterIndex < parameterAnnotationsAttribute.u2parametersCount; 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(); |
| this.visitAnnotation(clazz, annotation); |
| annotations[index] = annotation; |
| } |
| |
| parameterAnnotationsAttribute.u2parameterAnnotationsCount[parameterIndex] = u2annotationsCount; |
| parameterAnnotationsAttribute.parameterAnnotations[parameterIndex] = annotations; |
| } |
| } |
| |
| |
| 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 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 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 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 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(); |
| this.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 ClassConstants.CONSTANT_Utf8: return new Utf8Constant(); |
| case ClassConstants.CONSTANT_Integer: return new IntegerConstant(); |
| case ClassConstants.CONSTANT_Float: return new FloatConstant(); |
| case ClassConstants.CONSTANT_Long: return new LongConstant(); |
| case ClassConstants.CONSTANT_Double: return new DoubleConstant(); |
| case ClassConstants.CONSTANT_String: return new StringConstant(); |
| case ClassConstants.CONSTANT_Fieldref: return new FieldrefConstant(); |
| case ClassConstants.CONSTANT_Methodref: return new MethodrefConstant(); |
| case ClassConstants.CONSTANT_InterfaceMethodref: return new InterfaceMethodrefConstant(); |
| case ClassConstants.CONSTANT_Class: return new ClassConstant(); |
| case ClassConstants.CONSTANT_NameAndType: return new NameAndTypeConstant(); |
| |
| 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(ClassConstants.ATTR_SourceFile) ? (Attribute)new SourceFileAttribute(): |
| attributeName.equals(ClassConstants.ATTR_SourceDir) ? (Attribute)new SourceDirAttribute(): |
| attributeName.equals(ClassConstants.ATTR_InnerClasses) ? (Attribute)new InnerClassesAttribute(): |
| attributeName.equals(ClassConstants.ATTR_EnclosingMethod) ? (Attribute)new EnclosingMethodAttribute(): |
| attributeName.equals(ClassConstants.ATTR_Deprecated) ? (Attribute)new DeprecatedAttribute(): |
| attributeName.equals(ClassConstants.ATTR_Synthetic) ? (Attribute)new SyntheticAttribute(): |
| attributeName.equals(ClassConstants.ATTR_Signature) ? (Attribute)new SignatureAttribute(): |
| attributeName.equals(ClassConstants.ATTR_ConstantValue) ? (Attribute)new ConstantValueAttribute(): |
| attributeName.equals(ClassConstants.ATTR_Exceptions) ? (Attribute)new ExceptionsAttribute(): |
| attributeName.equals(ClassConstants.ATTR_Code) ? (Attribute)new CodeAttribute(): |
| attributeName.equals(ClassConstants.ATTR_StackMap) ? (Attribute)new StackMapAttribute(): |
| attributeName.equals(ClassConstants.ATTR_StackMapTable) ? (Attribute)new StackMapTableAttribute(): |
| attributeName.equals(ClassConstants.ATTR_LineNumberTable) ? (Attribute)new LineNumberTableAttribute(): |
| attributeName.equals(ClassConstants.ATTR_LocalVariableTable) ? (Attribute)new LocalVariableTableAttribute(): |
| attributeName.equals(ClassConstants.ATTR_LocalVariableTypeTable) ? (Attribute)new LocalVariableTypeTableAttribute(): |
| attributeName.equals(ClassConstants.ATTR_RuntimeVisibleAnnotations) ? (Attribute)new RuntimeVisibleAnnotationsAttribute(): |
| attributeName.equals(ClassConstants.ATTR_RuntimeInvisibleAnnotations) ? (Attribute)new RuntimeInvisibleAnnotationsAttribute(): |
| attributeName.equals(ClassConstants.ATTR_RuntimeVisibleParameterAnnotations) ? (Attribute)new RuntimeVisibleParameterAnnotationsAttribute(): |
| attributeName.equals(ClassConstants.ATTR_RuntimeInvisibleParameterAnnotations) ? (Attribute)new RuntimeInvisibleParameterAnnotationsAttribute(): |
| attributeName.equals(ClassConstants.ATTR_AnnotationDefault) ? (Attribute)new AnnotationDefaultAttribute(): |
| (Attribute)new UnknownAttribute(u4attributeLength); |
| attribute.u2attributeNameIndex = u2attributeNameIndex; |
| |
| return attribute; |
| } |
| |
| |
| private StackMapFrame createStackMapFrame() |
| { |
| int u1tag = dataInput.readUnsignedByte(); |
| |
| return |
| u1tag < StackMapFrame.SAME_ONE_FRAME ? (StackMapFrame)new SameZeroFrame(u1tag) : |
| u1tag < StackMapFrame.SAME_ONE_FRAME_EXTENDED ? (StackMapFrame)new SameOneFrame(u1tag) : |
| u1tag < StackMapFrame.LESS_ZERO_FRAME ? (StackMapFrame)new SameOneFrame(u1tag) : |
| u1tag < StackMapFrame.SAME_ZERO_FRAME_EXTENDED ? (StackMapFrame)new LessZeroFrame(u1tag) : |
| u1tag < StackMapFrame.MORE_ZERO_FRAME ? (StackMapFrame)new SameZeroFrame(u1tag) : |
| u1tag < StackMapFrame.FULL_FRAME ? (StackMapFrame)new MoreZeroFrame(u1tag) : |
| (StackMapFrame)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 ElementValue createElementValue() |
| { |
| int u1tag = dataInput.readUnsignedByte(); |
| |
| switch (u1tag) |
| { |
| case ClassConstants.INTERNAL_TYPE_BOOLEAN: |
| case ClassConstants.INTERNAL_TYPE_BYTE: |
| case ClassConstants.INTERNAL_TYPE_CHAR: |
| case ClassConstants.INTERNAL_TYPE_SHORT: |
| case ClassConstants.INTERNAL_TYPE_INT: |
| case ClassConstants.INTERNAL_TYPE_FLOAT: |
| case ClassConstants.INTERNAL_TYPE_LONG: |
| case ClassConstants.INTERNAL_TYPE_DOUBLE: |
| case ClassConstants.ELEMENT_VALUE_STRING_CONSTANT: return new ConstantElementValue(u1tag); |
| |
| case ClassConstants.ELEMENT_VALUE_ENUM_CONSTANT: return new EnumConstantElementValue(); |
| case ClassConstants.ELEMENT_VALUE_CLASS: return new ClassElementValue(); |
| case ClassConstants.ELEMENT_VALUE_ANNOTATION: return new AnnotationElementValue(); |
| case ClassConstants.ELEMENT_VALUE_ARRAY: return new ArrayElementValue(); |
| |
| default: throw new IllegalArgumentException("Unknown element value tag ["+u1tag+"]"); |
| } |
| } |
| } |
