Mercurial > hg > graal-compiler
view graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/nodes/instrument/SLExpressionWrapperNode.java @ 21615:838f005f9aec
handle service filtering that returns an empty result
author | Doug Simon <doug.simon@oracle.com> |
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date | Sun, 31 May 2015 14:30:13 +0200 |
parents | c0455554d45b |
children |
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/* * Copyright (c) 2012, 2015, 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.truffle.sl.nodes.instrument; import com.oracle.truffle.api.frame.*; import com.oracle.truffle.api.instrument.*; import com.oracle.truffle.api.instrument.ProbeNode.WrapperNode; import com.oracle.truffle.api.nodes.*; import com.oracle.truffle.sl.nodes.*; import com.oracle.truffle.sl.runtime.*; /** * A Truffle node that can be inserted into a Simple AST (assumed not to have executed yet) to * enable "instrumentation" of an {@link SLExpressionNode}. Tools wishing to interact with AST * execution may attach {@link Instrument}s to the {@link Probe} uniquely associated with the * wrapper, and to which this wrapper routes execution events. */ @NodeInfo(cost = NodeCost.NONE) public final class SLExpressionWrapperNode extends SLExpressionNode implements WrapperNode { @Child private SLExpressionNode child; @Child private ProbeNode probeNode; /** * Constructor. * * @param child The {@link SLExpressionNode} that this wrapper is wrapping */ public SLExpressionWrapperNode(SLExpressionNode child) { super(child.getSourceSection()); assert !(child instanceof SLExpressionWrapperNode); this.child = child; } public String instrumentationInfo() { return "Wrapper node for SL Expressions"; } @Override public boolean isInstrumentable() { return false; } @Override public SLExpressionNode getNonWrapperNode() { return child; } public void insertProbe(ProbeNode newProbeNode) { this.probeNode = newProbeNode; } public Probe getProbe() { return probeNode.getProbe(); } public Node getChild() { return child; } @Override public Object executeGeneric(VirtualFrame vFrame) { probeNode.enter(child, vFrame); Object result; try { result = child.executeGeneric(vFrame); probeNode.returnValue(child, vFrame, result); } catch (Exception e) { probeNode.returnExceptional(child, vFrame, e); throw (e); } return result; } @Override public long executeLong(VirtualFrame vFrame) throws UnexpectedResultException { return SLTypesGen.expectLong(executeGeneric(vFrame)); } @Override public boolean executeBoolean(VirtualFrame vFrame) throws UnexpectedResultException { return SLTypesGen.expectBoolean(executeGeneric(vFrame)); } @Override public SLFunction executeFunction(VirtualFrame vFrame) throws UnexpectedResultException { probeNode.enter(child, vFrame); SLFunction result; try { result = child.executeFunction(vFrame); probeNode.returnValue(child, vFrame, result); } catch (Exception e) { probeNode.returnExceptional(child, vFrame, e); throw (e); } return result; } }