Mercurial > hg > graal-compiler
view graal/com.oracle.truffle.ruby.nodes/src/com/oracle/truffle/ruby/nodes/yield/YieldNode.java @ 13792:9e7acc9cad8e
kill unused frame states when loop exits are removed
thanks to Gilles
author | Andreas Woess <andreas.woess@jku.at> |
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date | Tue, 28 Jan 2014 23:38:22 +0100 |
parents | 0fbee3eb71f0 |
children |
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/* * Copyright (c) 2013 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.nodes.yield; import com.oracle.truffle.api.*; import com.oracle.truffle.api.frame.*; import com.oracle.truffle.api.nodes.*; import com.oracle.truffle.ruby.nodes.*; import com.oracle.truffle.ruby.runtime.*; import com.oracle.truffle.ruby.runtime.core.*; /** * Yield to the current block. */ @NodeInfo(shortName = "yield") public class YieldNode extends RubyNode { @Children protected final RubyNode[] arguments; @Child protected YieldDispatchNode dispatch; public YieldNode(RubyContext context, SourceSection sourceSection, RubyNode[] arguments) { super(context, sourceSection); this.arguments = adoptChildren(arguments); dispatch = adoptChild(new UninitializedYieldDispatchNode(getContext(), getSourceSection())); } @ExplodeLoop @Override public final Object execute(VirtualFrame frame) { final Object[] argumentsObjects = new Object[arguments.length]; for (int i = 0; i < arguments.length; i++) { argumentsObjects[i] = arguments[i].execute(frame); } final RubyProc block = frame.getArguments(RubyArguments.class).getBlock(); if (block == null) { CompilerDirectives.transferToInterpreter(); // TODO(CS): convert to the proper Ruby exception throw new RuntimeException("No block to yield to"); } return dispatch.dispatch(frame, block, argumentsObjects); } @Override public Object isDefined(VirtualFrame frame) { final RubyArguments args = frame.getArguments(RubyArguments.class); if (args.getBlock() == null) { return NilPlaceholder.INSTANCE; } else { return getContext().makeString("yield"); } } }