Mercurial > hg > graal-compiler
diff graal/com.oracle.truffle.ruby.parser/src/com/oracle/truffle/ruby/parser/DefaultRubyNodeInstrumenter.java @ 13735:2c1c805153e6
Ruby: refactor low level instrumentation services
author | Michael Van De Vanter <michael.van.de.vanter@oracle.com> |
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date | Wed, 22 Jan 2014 21:02:06 -0800 |
parents | |
children | 22bf5a8ba9eb |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/graal/com.oracle.truffle.ruby.parser/src/com/oracle/truffle/ruby/parser/DefaultRubyNodeInstrumenter.java Wed Jan 22 21:02:06 2014 -0800 @@ -0,0 +1,50 @@ +/* + * Copyright (c) 2014 Oracle and/or its affiliates. All rights reserved. This + * code is released under a tri EPL/GPL/LGPL license. You can use it, + * redistribute it and/or modify it under the terms of the: + * + * Eclipse Public License version 1.0 + * GNU General Public License version 2 + * GNU Lesser General Public License version 2.1 + */ +package com.oracle.truffle.ruby.parser; + +import com.oracle.truffle.api.nodes.instrument.*; +import com.oracle.truffle.ruby.nodes.*; +import com.oracle.truffle.ruby.nodes.debug.*; +import com.oracle.truffle.ruby.runtime.*; +import com.oracle.truffle.ruby.runtime.debug.*; +import com.oracle.truffle.ruby.runtime.methods.*; + +/** + * Utility for instrumenting Ruby AST nodes to support the language's built-in <A + * href="http://www.ruby-doc.org/core-2.0.0/Kernel.html#method-i-set_trace_func">tracing + * facility</A>. It ignores nodes other than {@linkplain NodePhylum#STATEMENT statements}. + */ +final class DefaultRubyNodeInstrumenter implements RubyNodeInstrumenter { + + public DefaultRubyNodeInstrumenter() { + } + + public RubyNode instrumentAsStatement(RubyNode rubyNode) { + assert rubyNode != null; + assert !(rubyNode instanceof RubyProxyNode); + final RubyContext context = rubyNode.getContext(); + if (context.getConfiguration().getTrace()) { + final RubyProxyNode proxy = new RubyProxyNode(context, rubyNode); + proxy.markAs(NodePhylum.STATEMENT); + proxy.getProbeChain().appendProbe(new RubyTraceProbe(context)); + return proxy; + } + return rubyNode; + } + + public RubyNode instrumentAsCall(RubyNode node, String callName) { + return node; + } + + public RubyNode instrumentAsLocalAssignment(RubyNode node, UniqueMethodIdentifier methodIdentifier, String localName) { + return node; + } + +}