Mercurial > hg > graal-compiler
view graal/com.oracle.truffle.ruby.nodes/src/com/oracle/truffle/ruby/nodes/cast/BooleanCastNode.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.cast; import com.oracle.truffle.api.*; import com.oracle.truffle.api.dsl.*; 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.*; /** * Casts a value into a boolean. Works at the language level, so doesn't call any Ruby methods to * cast non-core or monkey-patched objects. */ @NodeInfo(shortName = "cast-boolean") @NodeChild(value = "child", type = RubyNode.class) public abstract class BooleanCastNode extends RubyNode { public BooleanCastNode(RubyContext context, SourceSection sourceSection) { super(context, sourceSection); } public BooleanCastNode(BooleanCastNode copy) { super(copy.getContext(), copy.getSourceSection()); } @Specialization public boolean doBoolean(boolean value) { return value; } @Specialization public boolean doNil(@SuppressWarnings("unused") NilPlaceholder nil) { return false; } @Generic public boolean doGeneric(Object object) { if (object instanceof Boolean) { return (boolean) object; } else if (object instanceof NilPlaceholder || object instanceof RubyNilClass) { return false; } else { return true; } } @Override public abstract boolean executeBoolean(VirtualFrame frame); }