Mercurial > hg > graal-compiler
view graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/nodes/instrument/SLStandardASTProber.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 | 6f1afa58a9b8 |
children | 894f82515e38 |
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/* * Copyright (c) 2014, 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 static com.oracle.truffle.api.instrument.StandardSyntaxTag.*; import com.oracle.truffle.api.instrument.*; import com.oracle.truffle.api.nodes.*; import com.oracle.truffle.sl.nodes.*; import com.oracle.truffle.sl.nodes.controlflow.*; import com.oracle.truffle.sl.nodes.local.*; /** * A visitor which traverses a completely parsed Simple AST (presumed not yet executed) and enables * instrumentation at a few standard kinds of nodes. */ public class SLStandardASTProber implements NodeVisitor, ASTProber { /** * {@inheritDoc} * <p> * Instruments and tags all relevant {@link SLStatementNode}s and {@link SLExpressionNode}s. * Currently, only SLStatementNodes that are not SLExpressionNodes are tagged as statements. */ public boolean visit(Node node) { if (node instanceof SLStatementNode && node.getParent() != null && node.getSourceSection() != null) { // All SL nodes are instrumentable, but treat expressions specially if (node instanceof SLExpressionNode) { SLExpressionNode expressionNode = (SLExpressionNode) node; Probe probe = expressionNode.probe(); if (node instanceof SLWriteLocalVariableNode) { probe.tagAs(STATEMENT, null); probe.tagAs(ASSIGNMENT, null); } } else { SLStatementNode statementNode = (SLStatementNode) node; Probe probe = statementNode.probe(); probe.tagAs(STATEMENT, null); if (node instanceof SLWhileNode) { probe.tagAs(START_LOOP, null); } } } return true; } public void probeAST(Node node) { node.accept(this); } }