/* * Copyright (c) 2016, 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. * * 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 * or visit www.oracle.com if you need additional information or have any * questions. */ package org.graalvm.compiler.graph; import java.util.Objects; import jdk.vm.ci.code.BytecodePosition; import jdk.vm.ci.code.CodeUtil; import jdk.vm.ci.meta.JavaConstant; import jdk.vm.ci.meta.MetaUtil; import jdk.vm.ci.meta.ResolvedJavaMethod; public class NodeSourcePosition extends BytecodePosition { /** * The receiver of the method this frame refers to. */ private final JavaConstant receiver; public NodeSourcePosition(JavaConstant receiver, NodeSourcePosition caller, ResolvedJavaMethod method, int bci) { super(caller, method, bci); this.receiver = receiver; assert receiver == null || method.getDeclaringClass().isInstance(receiver); } @Override public boolean equals(Object obj) { if (obj == this) { return true; } if (obj != null && getClass() == obj.getClass()) { NodeSourcePosition that = (NodeSourcePosition) obj; if (this.getBCI() == that.getBCI() && Objects.equals(this.getMethod(), that.getMethod()) && Objects.equals(this.getCaller(), that.getCaller()) && Objects.equals(this.receiver, that.receiver)) { return true; } } return false; } public JavaConstant getReceiver() { return receiver; } @Override public NodeSourcePosition getCaller() { return (NodeSourcePosition) super.getCaller(); } public NodeSourcePosition addCaller(JavaConstant newCallerReceiver, NodeSourcePosition link) { if (getCaller() == null) { assert newCallerReceiver == null || receiver == null : "replacing receiver"; return new NodeSourcePosition(newCallerReceiver, link, getMethod(), getBCI()); } else { return new NodeSourcePosition(receiver, getCaller().addCaller(newCallerReceiver, link), getMethod(), getBCI()); } } public NodeSourcePosition addCaller(NodeSourcePosition link) { return addCaller(null, link); } @Override public String toString() { StringBuilder sb = new StringBuilder(100); NodeSourcePosition pos = this; while (pos != null) { MetaUtil.appendLocation(sb.append("at "), pos.getMethod(), pos.getBCI()); if (pos.receiver != null) { sb.append("receiver=" + pos.receiver + " "); } pos = pos.getCaller(); if (pos != null) { sb.append(CodeUtil.NEW_LINE); } } return sb.toString(); } }