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fernflower/src/org/jetbrains/java/decompiler/struct/StructMember.java

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// Copyright 2000-2021 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
package org.jetbrains.java.decompiler.struct;
import org.jetbrains.java.decompiler.code.CodeConstants;
import org.jetbrains.java.decompiler.struct.attr.StructGeneralAttribute;
import org.jetbrains.java.decompiler.struct.attr.StructLocalVariableTableAttribute;
import org.jetbrains.java.decompiler.struct.attr.StructLocalVariableTypeTableAttribute;
import org.jetbrains.java.decompiler.struct.consts.ConstantPool;
import org.jetbrains.java.decompiler.util.DataInputFullStream;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
public abstract class StructMember {
private final int accessFlags;
private final Map<String, StructGeneralAttribute> attributes;
protected StructMember(int accessFlags, Map<String, StructGeneralAttribute> attributes) {
this.accessFlags = accessFlags;
this.attributes = attributes;
}
public int getAccessFlags() {
return accessFlags;
}
public <T extends StructGeneralAttribute> T getAttribute(StructGeneralAttribute.Key<T> attribute) {
@SuppressWarnings("unchecked") T t = (T)attributes.get(attribute.name);
return t;
}
public boolean hasAttribute(StructGeneralAttribute.Key<?> attribute) {
return attributes.containsKey(attribute.name);
}
public boolean hasModifier(int modifier) {
return (accessFlags & modifier) == modifier;
}
public boolean isSynthetic() {
return hasModifier(CodeConstants.ACC_SYNTHETIC) || hasAttribute(StructGeneralAttribute.ATTRIBUTE_SYNTHETIC);
}
public static Map<String, StructGeneralAttribute> readAttributes(DataInputFullStream in, ConstantPool pool) throws IOException {
int length = in.readUnsignedShort();
Map<String, StructGeneralAttribute> attributes = new HashMap<>(length);
for (int i = 0; i < length; i++) {
int nameIndex = in.readUnsignedShort();
String name = pool.getPrimitiveConstant(nameIndex).getString();
StructGeneralAttribute attribute = StructGeneralAttribute.createAttribute(name);
int attLength = in.readInt();
if (attribute == null) {
in.discard(attLength);
}
else {
attribute.initContent(in, pool);
if (StructGeneralAttribute.ATTRIBUTE_LOCAL_VARIABLE_TABLE.name.equals(name) && attributes.containsKey(name)) {
// merge all variable tables
StructLocalVariableTableAttribute table = (StructLocalVariableTableAttribute)attributes.get(name);
table.add((StructLocalVariableTableAttribute)attribute);
}
else if (StructGeneralAttribute.ATTRIBUTE_LOCAL_VARIABLE_TYPE_TABLE.name.equals(name) && attributes.containsKey(name)) {
// merge all variable tables
StructLocalVariableTypeTableAttribute table = (StructLocalVariableTypeTableAttribute)attributes.get(name);
table.add((StructLocalVariableTypeTableAttribute)attribute);
}
else {
attributes.put(name, attribute);
}
}
}
return attributes;
}
}