| /******************************************************************************* |
| * Copyright (c) 2000, 2004 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Common Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/cpl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.core.util; |
| |
| import org.eclipse.jdt.core.util.ClassFormatException; |
| import org.eclipse.jdt.core.util.IAttributeNamesConstants; |
| import org.eclipse.jdt.core.util.IClassFileAttribute; |
| import org.eclipse.jdt.core.util.IClassFileReader; |
| import org.eclipse.jdt.core.util.ICodeAttribute; |
| import org.eclipse.jdt.core.util.IConstantPool; |
| import org.eclipse.jdt.core.util.IConstantPoolConstant; |
| import org.eclipse.jdt.core.util.IConstantPoolEntry; |
| import org.eclipse.jdt.core.util.IExceptionAttribute; |
| import org.eclipse.jdt.core.util.IMethodInfo; |
| import org.eclipse.jdt.core.util.IModifierConstants; |
| |
| /** |
| * Default implementation of IMethodInfo. |
| */ |
| public class MethodInfo extends ClassFileStruct implements IMethodInfo { |
| private int accessFlags; |
| private int attributeBytes; |
| private IClassFileAttribute[] attributes; |
| private int attributesCount; |
| private ICodeAttribute codeAttribute; |
| private char[] descriptor; |
| private int descriptorIndex; |
| private IExceptionAttribute exceptionAttribute; |
| private boolean isDeprecated; |
| private boolean isSynthetic; |
| private char[] name; |
| private int nameIndex; |
| |
| /** |
| * @param classFileBytes byte[] |
| * @param constantPool IConstantPool |
| * @param offset int |
| * @param decodingFlags int |
| */ |
| public MethodInfo(byte classFileBytes[], IConstantPool constantPool, int offset, int decodingFlags) |
| throws ClassFormatException { |
| |
| boolean no_code_attribute = (decodingFlags & IClassFileReader.METHOD_BODIES) == 0; |
| final int flags = u2At(classFileBytes, 0, offset); |
| this.accessFlags = flags; |
| if ((flags & IModifierConstants.ACC_SYNTHETIC) != 0) { |
| this.isSynthetic = true; |
| } |
| |
| this.nameIndex = u2At(classFileBytes, 2, offset); |
| IConstantPoolEntry constantPoolEntry = constantPool.decodeEntry(this.nameIndex); |
| if (constantPoolEntry.getKind() != IConstantPoolConstant.CONSTANT_Utf8) { |
| throw new ClassFormatException(ClassFormatException.INVALID_CONSTANT_POOL_ENTRY); |
| } |
| this.name = constantPoolEntry.getUtf8Value(); |
| |
| this.descriptorIndex = u2At(classFileBytes, 4, offset); |
| constantPoolEntry = constantPool.decodeEntry(this.descriptorIndex); |
| if (constantPoolEntry.getKind() != IConstantPoolConstant.CONSTANT_Utf8) { |
| throw new ClassFormatException(ClassFormatException.INVALID_CONSTANT_POOL_ENTRY); |
| } |
| this.descriptor = constantPoolEntry.getUtf8Value(); |
| |
| this.attributesCount = u2At(classFileBytes, 6, offset); |
| this.attributes = ClassFileAttribute.NO_ATTRIBUTES; |
| if (this.attributesCount != 0) { |
| if (no_code_attribute && !isAbstract() && !isNative()) { |
| if (this.attributesCount != 1) { |
| this.attributes = new IClassFileAttribute[this.attributesCount - 1]; |
| } |
| } else { |
| this.attributes = new IClassFileAttribute[this.attributesCount]; |
| } |
| } |
| int attributesIndex = 0; |
| int readOffset = 8; |
| for (int i = 0; i < this.attributesCount; i++) { |
| constantPoolEntry = constantPool.decodeEntry(u2At(classFileBytes, readOffset, offset)); |
| if (constantPoolEntry.getKind() != IConstantPoolConstant.CONSTANT_Utf8) { |
| throw new ClassFormatException(ClassFormatException.INVALID_CONSTANT_POOL_ENTRY); |
| } |
| char[] attributeName = constantPoolEntry.getUtf8Value(); |
| if (equals(attributeName, IAttributeNamesConstants.DEPRECATED)) { |
| this.isDeprecated = true; |
| this.attributes[attributesIndex++] = new ClassFileAttribute(classFileBytes, constantPool, offset + readOffset); |
| } else if (equals(attributeName, IAttributeNamesConstants.SYNTHETIC)) { |
| this.isSynthetic = true; |
| this.attributes[attributesIndex++] = new ClassFileAttribute(classFileBytes, constantPool, offset + readOffset); |
| } else if (equals(attributeName, IAttributeNamesConstants.CODE)) { |
| if (!no_code_attribute) { |
| this.codeAttribute = new CodeAttribute(classFileBytes, constantPool, offset + readOffset); |
| this.attributes[attributesIndex++] = this.codeAttribute; |
| } |
| } else if (equals(attributeName, IAttributeNamesConstants.EXCEPTIONS)) { |
| this.exceptionAttribute = new ExceptionAttribute(classFileBytes, constantPool, offset + readOffset); |
| this.attributes[attributesIndex++] = this.exceptionAttribute; |
| } else if (equals(attributeName, IAttributeNamesConstants.SIGNATURE)) { |
| this.attributes[attributesIndex++] = new SignatureAttribute(classFileBytes, constantPool, offset + readOffset); |
| } else if (equals(attributeName, IAttributeNamesConstants.RUNTIME_VISIBLE_ANNOTATIONS)) { |
| this.attributes[attributesIndex++] = new RuntimeVisibleAnnotationsAttribute(classFileBytes, constantPool, offset + readOffset); |
| } else if (equals(attributeName, IAttributeNamesConstants.RUNTIME_INVISIBLE_ANNOTATIONS)) { |
| this.attributes[attributesIndex++] = new RuntimeInvisibleAnnotationsAttribute(classFileBytes, constantPool, offset + readOffset); |
| } else if (equals(attributeName, IAttributeNamesConstants.RUNTIME_VISIBLE_PARAMETER_ANNOTATIONS)) { |
| this.attributes[attributesIndex++] = new RuntimeVisibleParameterAnnotationsAttribute(classFileBytes, constantPool, offset + readOffset); |
| } else if (equals(attributeName, IAttributeNamesConstants.RUNTIME_INVISIBLE_PARAMETER_ANNOTATIONS)) { |
| this.attributes[attributesIndex++] = new RuntimeInvisibleParameterAnnotationsAttribute(classFileBytes, constantPool, offset + readOffset); |
| } else if (equals(attributeName, IAttributeNamesConstants.ANNOTATION_DEFAULT)) { |
| this.attributes[attributesIndex++] = new AnnotationDefaultAttribute(classFileBytes, constantPool, offset + readOffset); |
| } else { |
| this.attributes[attributesIndex++] = new ClassFileAttribute(classFileBytes, constantPool, offset + readOffset); |
| } |
| readOffset += (6 + u4At(classFileBytes, readOffset + 2, offset)); |
| } |
| this.attributeBytes = readOffset; |
| } |
| /** |
| * @see IMethodInfo#getAccessFlags() |
| */ |
| public int getAccessFlags() { |
| return this.accessFlags; |
| } |
| |
| /** |
| * @see IMethodInfo#getAttributeCount() |
| */ |
| public int getAttributeCount() { |
| return this.attributesCount; |
| } |
| /** |
| * @see IMethodInfo#getAttributes() |
| */ |
| public IClassFileAttribute[] getAttributes() { |
| return this.attributes; |
| } |
| |
| /** |
| * @see IMethodInfo#getCodeAttribute() |
| */ |
| public ICodeAttribute getCodeAttribute() { |
| return this.codeAttribute; |
| } |
| |
| /** |
| * @see IMethodInfo#getDescriptor() |
| */ |
| public char[] getDescriptor() { |
| return this.descriptor; |
| } |
| |
| /** |
| * @see IMethodInfo#getDescriptorIndex() |
| */ |
| public int getDescriptorIndex() { |
| return this.descriptorIndex; |
| } |
| |
| /** |
| * @see IMethodInfo#getExceptionAttribute() |
| */ |
| public IExceptionAttribute getExceptionAttribute() { |
| return this.exceptionAttribute; |
| } |
| |
| /** |
| * @see IMethodInfo#getName() |
| */ |
| public char[] getName() { |
| return this.name; |
| } |
| |
| /** |
| * @see IMethodInfo#getNameIndex() |
| */ |
| public int getNameIndex() { |
| return this.nameIndex; |
| } |
| |
| private boolean isAbstract() { |
| return (this.accessFlags & IModifierConstants.ACC_ABSTRACT) != 0; |
| } |
| |
| /** |
| * @see IMethodInfo#isClinit() |
| */ |
| public boolean isClinit() { |
| return this.name[0] == '<' && this.name.length == 8; // Can only match <clinit> |
| } |
| |
| /** |
| * @see IMethodInfo#isConstructor() |
| */ |
| public boolean isConstructor() { |
| return this.name[0] == '<' && this.name.length == 6; // Can only match <init> |
| } |
| |
| /** |
| * @see IMethodInfo#isDeprecated() |
| */ |
| public boolean isDeprecated() { |
| return this.isDeprecated; |
| } |
| |
| private boolean isNative() { |
| return (this.accessFlags & IModifierConstants.ACC_NATIVE) != 0; |
| } |
| |
| /** |
| * @see IMethodInfo#isSynthetic() |
| */ |
| public boolean isSynthetic() { |
| return this.isSynthetic; |
| } |
| |
| int sizeInBytes() { |
| return this.attributeBytes; |
| } |
| } |