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annotate graal/com.oracle.truffle.ruby.parser/src/com/oracle/truffle/ruby/parser/DefaultRubyNodeInstrumenter.java @ 13735:2c1c805153e6

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Ruby: refactor low level instrumentation services
author Michael Van De Vanter <michael.van.de.vanter@oracle.com>
date Wed, 22 Jan 2014 21:02:06 -0800
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children 22bf5a8ba9eb
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13735
2c1c805153e6 Ruby: refactor low level instrumentation services
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1 /*
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2 * Copyright (c) 2014 Oracle and/or its affiliates. All rights reserved. This
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3 * code is released under a tri EPL/GPL/LGPL license. You can use it,
2c1c805153e6 Ruby: refactor low level instrumentation services
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4 * redistribute it and/or modify it under the terms of the:
2c1c805153e6 Ruby: refactor low level instrumentation services
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5 *
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6 * Eclipse Public License version 1.0
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7 * GNU General Public License version 2
2c1c805153e6 Ruby: refactor low level instrumentation services
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8 * GNU Lesser General Public License version 2.1
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9 */
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10 package com.oracle.truffle.ruby.parser;
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11
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12 import com.oracle.truffle.api.nodes.instrument.*;
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13 import com.oracle.truffle.ruby.nodes.*;
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14 import com.oracle.truffle.ruby.nodes.debug.*;
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15 import com.oracle.truffle.ruby.runtime.*;
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16 import com.oracle.truffle.ruby.runtime.debug.*;
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17 import com.oracle.truffle.ruby.runtime.methods.*;
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18
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19 /**
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20 * Utility for instrumenting Ruby AST nodes to support the language's built-in <A
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21 * href="http://www.ruby-doc.org/core-2.0.0/Kernel.html#method-i-set_trace_func">tracing
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22 * facility</A>. It ignores nodes other than {@linkplain NodePhylum#STATEMENT statements}.
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23 */
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24 final class DefaultRubyNodeInstrumenter implements RubyNodeInstrumenter {
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25
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26 public DefaultRubyNodeInstrumenter() {
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27 }
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28
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29 public RubyNode instrumentAsStatement(RubyNode rubyNode) {
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30 assert rubyNode != null;
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31 assert !(rubyNode instanceof RubyProxyNode);
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32 final RubyContext context = rubyNode.getContext();
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33 if (context.getConfiguration().getTrace()) {
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34 final RubyProxyNode proxy = new RubyProxyNode(context, rubyNode);
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35 proxy.markAs(NodePhylum.STATEMENT);
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36 proxy.getProbeChain().appendProbe(new RubyTraceProbe(context));
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37 return proxy;
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38 }
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39 return rubyNode;
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40 }
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41
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42 public RubyNode instrumentAsCall(RubyNode node, String callName) {
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43 return node;
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44 }
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45
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46 public RubyNode instrumentAsLocalAssignment(RubyNode node, UniqueMethodIdentifier methodIdentifier, String localName) {
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47 return node;
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48 }
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49
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50 }