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/*
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* The Universal Permissive License (UPL), Version 1.0
*
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* person obtaining a copy of this software, associated documentation and/or
* data (collectively the "Software"), free of charge and under any and all
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* unmodified Software as contributed to or provided by such licensor, or (ii)
* the Larger Works (as defined below), to deal in both
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* (a) the Software, and
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* (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
* one is included with the Software each a "Larger Work" to which the Software
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package com.oracle.truffle.sl.builtins;
import com.oracle.truffle.api.CallTarget;
import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
import com.oracle.truffle.api.dsl.Cached;
import com.oracle.truffle.api.dsl.Specialization;
import com.oracle.truffle.api.nodes.DirectCallNode;
import com.oracle.truffle.api.nodes.NodeInfo;
import com.oracle.truffle.api.source.Source;
import com.oracle.truffle.api.strings.TruffleString;
import com.oracle.truffle.sl.SLLanguage;
import com.oracle.truffle.sl.runtime.SLContext;
/**
* Builtin function to evaluate source code in any supported language.
*
* The call target is cached against the language id and the source code, so that if they are the
* same each time then a direct call will be made to a cached AST, allowing it to be compiled and
* possibly inlined.
*/
@NodeInfo(shortName = "eval")
@SuppressWarnings("unused")
public abstract class SLEvalBuiltin extends SLBuiltinNode {
static final int LIMIT = 2;
@Specialization(guards = {"stringsEqual(equalNodeId, cachedId, id)", "stringsEqual(equalNodeCode, cachedCode, code)"}, limit = "LIMIT")
public Object evalCached(TruffleString id, TruffleString code,
@Cached("id") TruffleString cachedId,
@Cached("code") TruffleString cachedCode,
@Cached("create(parse(id, code))") DirectCallNode callNode,
@Cached TruffleString.EqualNode equalNodeId,
@Cached TruffleString.EqualNode equalNodeCode) {
return callNode.call(new Object[]{});
}
@TruffleBoundary
@Specialization(replaces = "evalCached")
public Object evalGeneric(TruffleString id, TruffleString code) {
return parse(id, code).call(this);
}
protected CallTarget parse(TruffleString id, TruffleString code) {
final Source source = Source.newBuilder(id.toJavaStringUncached(), code.toJavaStringUncached(), "(eval)").build();
return SLContext.get(this).parse(source);
}
/* Work around findbugs warning in generate code. */
protected static boolean stringsEqual(TruffleString.EqualNode node, TruffleString a, TruffleString b) {
return node.execute(a, b, SLLanguage.STRING_ENCODING);
}
}