| /* |
| * 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.bytecode; |
| |
| import jdk.vm.ci.meta.ConstantPool; |
| import jdk.vm.ci.meta.ExceptionHandler; |
| import jdk.vm.ci.meta.LineNumberTable; |
| import jdk.vm.ci.meta.LocalVariableTable; |
| import jdk.vm.ci.meta.ProfilingInfo; |
| import jdk.vm.ci.meta.ResolvedJavaMethod; |
| |
| /** |
| * An interface for accessing the bytecode properties of a {@link ResolvedJavaMethod} that allows |
| * for different properties than those returned by {@link ResolvedJavaMethod}. Since the bytecode |
| * accessed directly from {@link ResolvedJavaMethod} may have been subject to bytecode |
| * instrumentation and VM rewriting, this indirection can be used to enable access to the original |
| * bytecode of a method (i.e., as defined in a class file). |
| */ |
| public interface Bytecode { |
| |
| /** |
| * Gets the method this object supplies bytecode for. |
| */ |
| ResolvedJavaMethod getMethod(); |
| |
| byte[] getCode(); |
| |
| int getCodeSize(); |
| |
| int getMaxStackSize(); |
| |
| int getMaxLocals(); |
| |
| ConstantPool getConstantPool(); |
| |
| LineNumberTable getLineNumberTable(); |
| |
| LocalVariableTable getLocalVariableTable(); |
| |
| StackTraceElement asStackTraceElement(int bci); |
| |
| ProfilingInfo getProfilingInfo(); |
| |
| ExceptionHandler[] getExceptionHandlers(); |
| |
| /** |
| * Gets the {@link BytecodeProvider} from which this object was acquired. |
| */ |
| BytecodeProvider getOrigin(); |
| |
| static String toLocation(Bytecode bytecode, int bci) { |
| return appendLocation(new StringBuilder(), bytecode, bci).toString(); |
| } |
| |
| static StringBuilder appendLocation(StringBuilder sb, Bytecode bytecode, int bci) { |
| if (bytecode != null) { |
| StackTraceElement ste = bytecode.asStackTraceElement(bci); |
| if (ste.getFileName() != null && ste.getLineNumber() > 0) { |
| sb.append(ste); |
| } else { |
| sb.append(bytecode.getMethod().format("%H.%n(%p)")); |
| } |
| } else { |
| sb.append("Null method"); |
| } |
| return sb.append(" [bci: ").append(bci).append(']'); |
| } |
| } |