Mercurial > hg > graal-jvmci-8
view graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/nodes/instrument/SLStatementWrapper.java @ 16856:7833417c8172
Changes to Instrumentation
author | David Piorkowski <david.piorkowski@oracle.com> |
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date | Mon, 18 Aug 2014 14:36:12 -0700 |
parents | 618d92152d3c |
children | 7661cc464239 |
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/* * Copyright (c) 2012, 2014, 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.CompilerDirectives.SlowPath; import com.oracle.truffle.api.frame.*; import com.oracle.truffle.api.instrument.*; import com.oracle.truffle.api.nodes.*; import com.oracle.truffle.sl.nodes.*; import com.oracle.truffle.sl.runtime.*; /** * SLStatmentWrapper is a Truffle AST node that gets inserted as the parent to the node that it is * wrapping. Any debugging instruments are attached to this wrapper through {@link Probe}s (which * themselves contain the instruments). It is through this mechanism that tools can interact * directly with the AST. <br/> * SLStatmentWrapper specifically wraps {@link SLStatementWrapper}s and overrides the executeVoid * function of {@link SLStatementNode} to operate on the child of the wrapper instead of the wrapper * itself. * */ public final class SLStatementWrapper extends SLStatementNode implements Wrapper { @Child private SLStatementNode child; private final Probe probe; public SLStatementWrapper(SLContext context, SLStatementNode child) { super(child.getSourceSection()); assert !(child instanceof SLStatementWrapper); this.child = insert(child); this.probe = context.createProbe(child.getSourceSection()); } @Override public SLStatementNode getNonWrapperNode() { return child; } public Node getChild() { return child; } public Probe getProbe() { return probe; } @SlowPath public boolean isTaggedAs(SyntaxTag tag) { return probe.isTaggedAs(tag); } @SlowPath public Iterable<SyntaxTag> getSyntaxTags() { return probe.getSyntaxTags(); } @SlowPath public void tagAs(SyntaxTag tag) { probe.tagAs(tag); } @Override public void executeVoid(VirtualFrame frame) { this.tagAs(StandardSyntaxTag.STATEMENT); probe.enter(child, frame); try { child.executeVoid(frame); probe.leave(child, frame); } catch (KillException e) { throw (e); } catch (Exception e) { probe.leaveExceptional(child, frame, e); throw (e); } } }