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

96 lines
3.4 KiB

/*
* Copyright 2000-2017 JetBrains s.r.o.
*
* 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 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 class StructMember {
protected int accessFlags;
protected Map<String, StructGeneralAttribute> attributes;
public int getAccessFlags() {
return accessFlags;
}
public StructGeneralAttribute getAttribute(String name) {
return attributes.get(name);
}
public boolean hasAttribute(String name) {
return attributes.containsKey(name);
}
public boolean hasModifier(int modifier) {
return (accessFlags & modifier) == modifier;
}
public boolean isSynthetic() {
return hasModifier(CodeConstants.ACC_SYNTHETIC) || hasAttribute(StructGeneralAttribute.ATTRIBUTE_SYNTHETIC);
}
protected 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 = readAttribute(in, pool, name);
if (attribute != null) {
if (StructGeneralAttribute.ATTRIBUTE_LOCAL_VARIABLE_TABLE.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.equals(name) && attributes.containsKey(name)) {
// merge all variable tables
StructLocalVariableTypeTableAttribute table = (StructLocalVariableTypeTableAttribute)attributes.get(name);
table.add((StructLocalVariableTypeTableAttribute)attribute);
}
else {
attributes.put(attribute.getName(), attribute);
}
}
}
return attributes;
}
protected StructGeneralAttribute readAttribute(DataInputFullStream in, ConstantPool pool, String name) throws IOException {
StructGeneralAttribute attribute = StructGeneralAttribute.createAttribute(name);
int length = in.readInt();
if (attribute == null) {
in.discard(length);
}
else {
attribute.initContent(in, pool);
}
return attribute;
}
}