diff options
Diffstat (limited to 'plugins/java-decompiler/engine/src/org/jetbrains/java/decompiler/struct/consts/LinkConstant.java')
-rw-r--r-- | plugins/java-decompiler/engine/src/org/jetbrains/java/decompiler/struct/consts/LinkConstant.java | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/plugins/java-decompiler/engine/src/org/jetbrains/java/decompiler/struct/consts/LinkConstant.java b/plugins/java-decompiler/engine/src/org/jetbrains/java/decompiler/struct/consts/LinkConstant.java new file mode 100644 index 000000000000..71bf14615558 --- /dev/null +++ b/plugins/java-decompiler/engine/src/org/jetbrains/java/decompiler/struct/consts/LinkConstant.java @@ -0,0 +1,165 @@ +/* + * 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])); + } +} + |