Mercurial > hg > graal-compiler
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/Invoke.java @ 23373:5e5fdf05b14e
Guard agains NullPointerException
author | Christian Wimmer <christian.wimmer@oracle.com> |
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date | Wed, 03 Feb 2016 18:54:23 -0800 |
parents | 615f3bbbb174 |
children |
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/* * Copyright (c) 2011, 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 com.oracle.graal.nodes; import jdk.vm.ci.meta.ResolvedJavaMethod; import jdk.vm.ci.meta.ResolvedJavaType; import com.oracle.graal.compiler.common.type.Stamp; import com.oracle.graal.graph.Node; import com.oracle.graal.nodes.CallTargetNode.InvokeKind; import com.oracle.graal.nodes.extended.GuardedNode; import com.oracle.graal.nodes.java.MethodCallTargetNode; import com.oracle.graal.nodes.spi.Lowerable; import com.oracle.graal.nodes.spi.UncheckedInterfaceProvider; import com.oracle.graal.nodes.type.StampTool; public interface Invoke extends StateSplit, Lowerable, DeoptimizingNode.DeoptDuring, GuardedNode, UncheckedInterfaceProvider { FixedNode next(); void setNext(FixedNode x); CallTargetNode callTarget(); int bci(); FixedNode asNode(); Node predecessor(); void intrinsify(Node node); boolean useForInlining(); void setUseForInlining(boolean value); /** * True if this invocation is almost certainly polymorphic, false when in doubt. */ boolean isPolymorphic(); void setPolymorphic(boolean value); /** * Returns the {@linkplain ResolvedJavaMethod method} from which this invoke is executed. This * is the caller method and in the case of inlining may be different from the method of the * graph this node is in. * * @return the method from which this invoke is executed. */ default ResolvedJavaMethod getContextMethod() { FrameState state = stateAfter(); if (state == null) { state = stateDuring(); } return state.method(); } /** * Returns the {@linkplain ResolvedJavaType type} from which this invoke is executed. This is * the declaring type of the caller method. * * @return the type from which this invoke is executed. */ default ResolvedJavaType getContextType() { ResolvedJavaMethod contextMethod = getContextMethod(); if (contextMethod == null) { return null; } return contextMethod.getDeclaringClass(); } @Override default void computeStateDuring(FrameState stateAfter) { FrameState newStateDuring = stateAfter.duplicateModifiedDuringCall(bci(), asNode().getStackKind()); setStateDuring(newStateDuring); } default ValueNode getReceiver() { assert getInvokeKind().hasReceiver(); return callTarget().arguments().get(0); } default ResolvedJavaType getReceiverType() { ResolvedJavaType receiverType = StampTool.typeOrNull(getReceiver()); if (receiverType == null) { receiverType = ((MethodCallTargetNode) callTarget()).targetMethod().getDeclaringClass(); } return receiverType; } default InvokeKind getInvokeKind() { return callTarget().invokeKind(); } default Stamp uncheckedStamp() { if (callTarget() instanceof MethodCallTargetNode) { MethodCallTargetNode methodCallTargetNode = (MethodCallTargetNode) callTarget(); return UncheckedInterfaceProvider.uncheckedOrNull(methodCallTargetNode.returnType(), asNode().stamp()); } return null; } }