com.sun.tools.classfile.Attribute Maven / Gradle / Ivy
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/*
* Copyright (c) 2007, 2014, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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package com.sun.tools.classfile;
import java.io.IOException;
import java.lang.reflect.Constructor;
import java.util.HashMap;
import java.util.Map;
/**
* This is NOT part of any supported API.
* If you write code that depends on this, you do so at your own risk.
* This code and its internal interfaces are subject to change or
* deletion without notice.
*/
public abstract class Attribute {
public static final String AnnotationDefault = "AnnotationDefault";
public static final String BootstrapMethods = "BootstrapMethods";
public static final String CharacterRangeTable = "CharacterRangeTable";
public static final String Code = "Code";
public static final String ConstantValue = "ConstantValue";
public static final String CompilationID = "CompilationID";
public static final String Deprecated = "Deprecated";
public static final String EnclosingMethod = "EnclosingMethod";
public static final String Exceptions = "Exceptions";
public static final String InnerClasses = "InnerClasses";
public static final String LineNumberTable = "LineNumberTable";
public static final String LocalVariableTable = "LocalVariableTable";
public static final String LocalVariableTypeTable = "LocalVariableTypeTable";
public static final String MethodParameters = "MethodParameters";
public static final String RuntimeVisibleAnnotations = "RuntimeVisibleAnnotations";
public static final String RuntimeInvisibleAnnotations = "RuntimeInvisibleAnnotations";
public static final String RuntimeVisibleParameterAnnotations = "RuntimeVisibleParameterAnnotations";
public static final String RuntimeInvisibleParameterAnnotations = "RuntimeInvisibleParameterAnnotations";
public static final String RuntimeVisibleTypeAnnotations = "RuntimeVisibleTypeAnnotations";
public static final String RuntimeInvisibleTypeAnnotations = "RuntimeInvisibleTypeAnnotations";
public static final String Signature = "Signature";
public static final String SourceDebugExtension = "SourceDebugExtension";
public static final String SourceFile = "SourceFile";
public static final String SourceID = "SourceID";
public static final String StackMap = "StackMap";
public static final String StackMapTable = "StackMapTable";
public static final String Synthetic = "Synthetic";
public static class Factory {
public Factory() {
// defer init of standardAttributeClasses until after options set up
}
public Attribute createAttribute(ClassReader cr, int name_index, byte[] data)
throws IOException {
if (standardAttributes == null) {
init();
}
ConstantPool cp = cr.getConstantPool();
String reasonForDefaultAttr;
try {
String name = cp.getUTF8Value(name_index);
Class attrClass = standardAttributes.get(name);
if (attrClass != null) {
try {
Class[] constrArgTypes = {ClassReader.class, int.class, int.class};
Constructor constr = attrClass.getDeclaredConstructor(constrArgTypes);
return constr.newInstance(cr, name_index, data.length);
} catch (Throwable t) {
reasonForDefaultAttr = t.toString();
// fall through and use DefaultAttribute
// t.printStackTrace();
}
} else {
reasonForDefaultAttr = "unknown attribute";
}
} catch (ConstantPoolException e) {
reasonForDefaultAttr = e.toString();
// fall through and use DefaultAttribute
}
return new DefaultAttribute(cr, name_index, data, reasonForDefaultAttr);
}
protected void init() {
standardAttributes = new HashMap<>();
standardAttributes.put(AnnotationDefault, AnnotationDefault_attribute.class);
standardAttributes.put(BootstrapMethods, BootstrapMethods_attribute.class);
standardAttributes.put(CharacterRangeTable, CharacterRangeTable_attribute.class);
standardAttributes.put(Code, Code_attribute.class);
standardAttributes.put(CompilationID, CompilationID_attribute.class);
standardAttributes.put(ConstantValue, ConstantValue_attribute.class);
standardAttributes.put(Deprecated, Deprecated_attribute.class);
standardAttributes.put(EnclosingMethod, EnclosingMethod_attribute.class);
standardAttributes.put(Exceptions, Exceptions_attribute.class);
standardAttributes.put(InnerClasses, InnerClasses_attribute.class);
standardAttributes.put(LineNumberTable, LineNumberTable_attribute.class);
standardAttributes.put(LocalVariableTable, LocalVariableTable_attribute.class);
standardAttributes.put(LocalVariableTypeTable, LocalVariableTypeTable_attribute.class);
standardAttributes.put(MethodParameters, MethodParameters_attribute.class);
standardAttributes.put(RuntimeInvisibleAnnotations, RuntimeInvisibleAnnotations_attribute.class);
standardAttributes.put(RuntimeInvisibleParameterAnnotations, RuntimeInvisibleParameterAnnotations_attribute.class);
standardAttributes.put(RuntimeVisibleAnnotations, RuntimeVisibleAnnotations_attribute.class);
standardAttributes.put(RuntimeVisibleParameterAnnotations, RuntimeVisibleParameterAnnotations_attribute.class);
standardAttributes.put(RuntimeVisibleTypeAnnotations, RuntimeVisibleTypeAnnotations_attribute.class);
standardAttributes.put(RuntimeInvisibleTypeAnnotations, RuntimeInvisibleTypeAnnotations_attribute.class);
standardAttributes.put(Signature, Signature_attribute.class);
standardAttributes.put(SourceDebugExtension, SourceDebugExtension_attribute.class);
standardAttributes.put(SourceFile, SourceFile_attribute.class);
standardAttributes.put(SourceID, SourceID_attribute.class);
standardAttributes.put(StackMap, StackMap_attribute.class);
standardAttributes.put(StackMapTable, StackMapTable_attribute.class);
standardAttributes.put(Synthetic, Synthetic_attribute.class);
}
private Map> standardAttributes;
}
public static Attribute read(ClassReader cr) throws IOException {
return cr.readAttribute();
}
protected Attribute(int name_index, int length) {
attribute_name_index = name_index;
attribute_length = length;
}
public String getName(ConstantPool constant_pool) throws ConstantPoolException {
return constant_pool.getUTF8Value(attribute_name_index);
}
public abstract R accept(Attribute.Visitor visitor, D data);
public int byteLength() {
return 6 + attribute_length;
}
public final int attribute_name_index;
public final int attribute_length;
public interface Visitor {
R visitBootstrapMethods(BootstrapMethods_attribute attr, P p);
R visitDefault(DefaultAttribute attr, P p);
R visitAnnotationDefault(AnnotationDefault_attribute attr, P p);
R visitCharacterRangeTable(CharacterRangeTable_attribute attr, P p);
R visitCode(Code_attribute attr, P p);
R visitCompilationID(CompilationID_attribute attr, P p);
R visitConstantValue(ConstantValue_attribute attr, P p);
R visitDeprecated(Deprecated_attribute attr, P p);
R visitEnclosingMethod(EnclosingMethod_attribute attr, P p);
R visitExceptions(Exceptions_attribute attr, P p);
R visitInnerClasses(InnerClasses_attribute attr, P p);
R visitLineNumberTable(LineNumberTable_attribute attr, P p);
R visitLocalVariableTable(LocalVariableTable_attribute attr, P p);
R visitLocalVariableTypeTable(LocalVariableTypeTable_attribute attr, P p);
R visitMethodParameters(MethodParameters_attribute attr, P p);
R visitRuntimeVisibleAnnotations(RuntimeVisibleAnnotations_attribute attr, P p);
R visitRuntimeInvisibleAnnotations(RuntimeInvisibleAnnotations_attribute attr, P p);
R visitRuntimeVisibleParameterAnnotations(RuntimeVisibleParameterAnnotations_attribute attr, P p);
R visitRuntimeInvisibleParameterAnnotations(RuntimeInvisibleParameterAnnotations_attribute attr, P p);
R visitRuntimeVisibleTypeAnnotations(RuntimeVisibleTypeAnnotations_attribute attr, P p);
R visitRuntimeInvisibleTypeAnnotations(RuntimeInvisibleTypeAnnotations_attribute attr, P p);
R visitSignature(Signature_attribute attr, P p);
R visitSourceDebugExtension(SourceDebugExtension_attribute attr, P p);
R visitSourceFile(SourceFile_attribute attr, P p);
R visitSourceID(SourceID_attribute attr, P p);
R visitStackMap(StackMap_attribute attr, P p);
R visitStackMapTable(StackMapTable_attribute attr, P p);
R visitSynthetic(Synthetic_attribute attr, P p);
}
}