| /* |
| * Copyright 2000-2014 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.consts; |
| |
| import java.io.DataOutputStream; |
| import java.io.IOException; |
| |
| /* |
| * NameAndType, FieldRef, MethodRef, InterfaceMethodref |
| * InvokeDynamic, MethodHandle |
| */ |
| |
| public class LinkConstant extends PooledConstant { |
| |
| // ***************************************************************************** |
| // public fields |
| // ***************************************************************************** |
| |
| public int index1, index2; |
| |
| public String classname; |
| |
| public String elementname; |
| |
| public String descriptor; |
| |
| public int paramCount = 0; |
| |
| public boolean isVoid = false; |
| |
| public boolean returnCategory2 = false; |
| |
| |
| // ***************************************************************************** |
| // constructors |
| // ***************************************************************************** |
| |
| public LinkConstant(int type, String classname, String elementname, String descriptor) { |
| this.type = type; |
| this.classname = classname; |
| this.elementname = elementname; |
| this.descriptor = descriptor; |
| |
| initConstant(); |
| } |
| |
| public LinkConstant(int type, int index1, int index2) { |
| this.type = type; |
| this.index1 = index1; |
| this.index2 = index2; |
| } |
| |
| |
| // ***************************************************************************** |
| // public methods |
| // ***************************************************************************** |
| |
| public void resolveConstant(ConstantPool pool) { |
| |
| if (type == CONSTANT_NameAndType) { |
| elementname = pool.getPrimitiveConstant(index1).getString(); |
| descriptor = pool.getPrimitiveConstant(index2).getString(); |
| } |
| else if (type == CONSTANT_MethodHandle) { |
| LinkConstant ref_info = pool.getLinkConstant(index2); |
| |
| classname = ref_info.classname; |
| elementname = ref_info.elementname; |
| descriptor = ref_info.descriptor; |
| } |
| else { |
| if (type != CONSTANT_InvokeDynamic) { |
| classname = pool.getPrimitiveConstant(index1).getString(); |
| } |
| |
| LinkConstant nametype = pool.getLinkConstant(index2); |
| elementname = nametype.elementname; |
| descriptor = nametype.descriptor; |
| } |
| |
| initConstant(); |
| } |
| |
| public void writeToStream(DataOutputStream out) throws IOException { |
| out.writeByte(type); |
| if (type == CONSTANT_MethodHandle) { |
| out.writeByte(index1); |
| } |
| else { |
| out.writeShort(index1); |
| } |
| out.writeShort(index2); |
| } |
| |
| |
| public boolean equals(Object o) { |
| if (o == this) return true; |
| if (o == null || !(o instanceof LinkConstant)) return false; |
| |
| LinkConstant cn = (LinkConstant)o; |
| return this.type == cn.type && |
| this.elementname.equals(cn.elementname) && |
| this.descriptor.equals(cn.descriptor) && |
| (this.type != CONSTANT_NameAndType || this.classname.equals(cn.classname)); |
| } |
| |
| // ***************************************************************************** |
| // private methods |
| // ***************************************************************************** |
| |
| private void initConstant() { |
| |
| if (type == CONSTANT_Methodref || |
| type == CONSTANT_InterfaceMethodref || |
| type == CONSTANT_InvokeDynamic || |
| type == CONSTANT_MethodHandle) { |
| resolveDescriptor(descriptor); |
| } |
| else if (type == CONSTANT_Fieldref) { |
| returnCategory2 = ("D".equals(descriptor) || "J".equals(descriptor)); |
| } |
| } |
| |
| private void resolveDescriptor(String descr) { |
| |
| String[] arr = descr.split("[()]"); |
| String par = arr[1]; |
| |
| int index = 0, counter = 0; |
| int len = par.length(); |
| |
| while (index < len) { |
| |
| char c = par.charAt(index); |
| if (c == 'L') { |
| index = par.indexOf(";", index); |
| } |
| else if (c == '[') { |
| index++; |
| continue; |
| } |
| |
| counter++; |
| index++; |
| } |
| |
| paramCount = counter; |
| isVoid = "V".equals(arr[2]); |
| returnCategory2 = ("D".equals(arr[2]) || "J".equals(arr[2])); |
| } |
| } |
| |