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comparison 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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13734:7bab96d62fa3 13735:2c1c805153e6
1 /*
2 * Copyright (c) 2014 Oracle and/or its affiliates. All rights reserved. This
3 * code is released under a tri EPL/GPL/LGPL license. You can use it,
4 * redistribute it and/or modify it under the terms of the:
5 *
6 * Eclipse Public License version 1.0
7 * GNU General Public License version 2
8 * GNU Lesser General Public License version 2.1
9 */
10 package com.oracle.truffle.ruby.parser;
11
12 import com.oracle.truffle.api.nodes.instrument.*;
13 import com.oracle.truffle.ruby.nodes.*;
14 import com.oracle.truffle.ruby.nodes.debug.*;
15 import com.oracle.truffle.ruby.runtime.*;
16 import com.oracle.truffle.ruby.runtime.debug.*;
17 import com.oracle.truffle.ruby.runtime.methods.*;
18
19 /**
20 * Utility for instrumenting Ruby AST nodes to support the language's built-in <A
21 * href="http://www.ruby-doc.org/core-2.0.0/Kernel.html#method-i-set_trace_func">tracing
22 * facility</A>. It ignores nodes other than {@linkplain NodePhylum#STATEMENT statements}.
23 */
24 final class DefaultRubyNodeInstrumenter implements RubyNodeInstrumenter {
25
26 public DefaultRubyNodeInstrumenter() {
27 }
28
29 public RubyNode instrumentAsStatement(RubyNode rubyNode) {
30 assert rubyNode != null;
31 assert !(rubyNode instanceof RubyProxyNode);
32 final RubyContext context = rubyNode.getContext();
33 if (context.getConfiguration().getTrace()) {
34 final RubyProxyNode proxy = new RubyProxyNode(context, rubyNode);
35 proxy.markAs(NodePhylum.STATEMENT);
36 proxy.getProbeChain().appendProbe(new RubyTraceProbe(context));
37 return proxy;
38 }
39 return rubyNode;
40 }
41
42 public RubyNode instrumentAsCall(RubyNode node, String callName) {
43 return node;
44 }
45
46 public RubyNode instrumentAsLocalAssignment(RubyNode node, UniqueMethodIdentifier methodIdentifier, String localName) {
47 return node;
48 }
49
50 }