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[Truffle] Use @CreateCast to simplify Ruby string -> Java string.
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truffle/src/main/java/org/jruby/truffle/core/cast/NameToJavaStringWithDefaultNode.java
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/* | ||
* Copyright (c) 2016 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 org.jruby.truffle.core.cast; | ||
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import com.oracle.truffle.api.dsl.NodeChild; | ||
import com.oracle.truffle.api.dsl.Specialization; | ||
import com.oracle.truffle.api.frame.VirtualFrame; | ||
import com.oracle.truffle.api.source.SourceSection; | ||
import org.jruby.truffle.RubyContext; | ||
import org.jruby.truffle.language.NotProvided; | ||
import org.jruby.truffle.language.RubyNode; | ||
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/** | ||
* Take a Symbol or some object accepting #to_str | ||
* and convert it to a Java String and defaults to | ||
* the given value if not provided. | ||
*/ | ||
@NodeChild(value = "value", type = RubyNode.class) | ||
public abstract class NameToJavaStringWithDefaultNode extends RubyNode { | ||
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private final String defaultValue; | ||
@Child private NameToJavaStringNode toJavaStringNode; | ||
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public NameToJavaStringWithDefaultNode(RubyContext context, SourceSection sourceSection, String defaultValue) { | ||
super(context, sourceSection); | ||
this.defaultValue = defaultValue; | ||
toJavaStringNode = NameToJavaStringNodeGen.create(context, sourceSection, null); | ||
} | ||
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public abstract String executeString(VirtualFrame frame, Object value); | ||
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@Specialization | ||
public String doDefault(VirtualFrame frame, NotProvided value) { | ||
return toJavaStringNode.executeToJavaString(frame, defaultValue); | ||
} | ||
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@Specialization(guards = "wasProvided(value)") | ||
public String doProvided(VirtualFrame frame, Object value) { | ||
return toJavaStringNode.executeToJavaString(frame, value); | ||
} | ||
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} |
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