| /* |
| * Copyright (c) 2001, 2012, 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 sun.jvm.hotspot.interpreter; |
| |
| import sun.jvm.hotspot.oops.*; |
| import sun.jvm.hotspot.runtime.*; |
| import sun.jvm.hotspot.utilities.*; |
| |
| public class BytecodeInvoke extends BytecodeWithCPIndex { |
| BytecodeInvoke(Method method, int bci) { |
| super(method, bci); |
| } |
| |
| public static BytecodeInvoke at(Method method, int bci) { |
| BytecodeInvoke b = new BytecodeInvoke(method, bci); |
| if (Assert.ASSERTS_ENABLED) { |
| b.verify(); |
| } |
| return b; |
| } |
| |
| /** Like at, but returns null if the BCI is not at an invoke */ |
| public static BytecodeInvoke atCheck(Method method, int bci) { |
| BytecodeInvoke b = new BytecodeInvoke(method, bci); |
| return (b.isValid() ? b : null); |
| } |
| |
| public static BytecodeInvoke at(BytecodeStream bcs) { |
| return new BytecodeInvoke(bcs.method(), bcs.bci()); |
| } |
| |
| // returns the name of the invoked method |
| public Symbol name() { |
| ConstantPool cp = method().getConstants(); |
| if (isInvokedynamic()) { |
| return cp.uncachedGetNameRefAt(indexForFieldOrMethod()); |
| } |
| return cp.getNameRefAt(index()); |
| } |
| |
| // returns the signature of the invoked method |
| public Symbol signature() { |
| ConstantPool cp = method().getConstants(); |
| if (isInvokedynamic()) { |
| return cp.uncachedGetSignatureRefAt(indexForFieldOrMethod()); |
| } |
| return cp.getSignatureRefAt(index()); |
| } |
| |
| public Method getInvokedMethod() { |
| return method().getConstants().getMethodRefAt(index()); |
| } |
| |
| // returns the result type (see BasicType.java) of the invoke |
| public int resultType() { |
| ResultTypeFinder rts = new ResultTypeFinder(signature()); |
| rts.iterate(); |
| return rts.type(); |
| } |
| |
| public int adjustedInvokeCode() { |
| return javaCode(); |
| } |
| |
| // "specified" method (from constant pool) |
| // FIXME: elided for now |
| // public Method staticTarget(); |
| |
| // Testers |
| public boolean isInvokeinterface() { return adjustedInvokeCode() == Bytecodes._invokeinterface; } |
| public boolean isInvokevirtual() { return adjustedInvokeCode() == Bytecodes._invokevirtual; } |
| public boolean isInvokestatic() { return adjustedInvokeCode() == Bytecodes._invokestatic; } |
| public boolean isInvokespecial() { return adjustedInvokeCode() == Bytecodes._invokespecial; } |
| public boolean isInvokedynamic() { return adjustedInvokeCode() == Bytecodes._invokedynamic; } |
| |
| public boolean isValid() { return isInvokeinterface() || |
| isInvokevirtual() || |
| isInvokestatic() || |
| isInvokespecial(); } |
| public void verify() { |
| if (Assert.ASSERTS_ENABLED) { |
| Assert.that(isValid(), "check invoke"); |
| } |
| } |
| |
| public String toString() { |
| StringBuffer buf = new StringBuffer(); |
| buf.append(getJavaBytecodeName()); |
| buf.append(spaces); |
| buf.append('#'); |
| buf.append(Integer.toString(indexForFieldOrMethod())); |
| if (isInvokedynamic()) { |
| buf.append('('); |
| buf.append(Integer.toString(index())); |
| buf.append(')'); |
| } |
| buf.append(" [Method "); |
| StringBuffer sigBuf = new StringBuffer(); |
| new SignatureConverter(signature(), sigBuf).iterateReturntype(); |
| buf.append(sigBuf.toString().replace('/', '.')); |
| buf.append(spaces); |
| buf.append(name().asString()); |
| buf.append('('); |
| sigBuf = new StringBuffer(); |
| new SignatureConverter(signature(), sigBuf).iterateParameters(); |
| buf.append(sigBuf.toString().replace('/', '.')); |
| buf.append(')'); |
| buf.append(']'); |
| if (code() != javaCode()) { |
| buf.append(spaces); |
| buf.append('['); |
| buf.append(getBytecodeName()); |
| buf.append(']'); |
| } |
| return buf.toString(); |
| } |
| } |